[openwrt.git] / target / linux / brcm2708 / patches-3.10 / 0002-Add-dwc_otg-driver.patch

From 344d6f31638c96846ac26f40a74ee1cc495f421e Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 1 May 2013 19:46:17 +0100
Subject: [PATCH 002/196] Add dwc_otg driver

Signed-off-by: popcornmix <popcornmix@gmail.com>
---
 drivers/usb/Makefile                               |    1 +
 drivers/usb/core/generic.c                         |    1 +
 drivers/usb/core/message.c                         |   79 +
 drivers/usb/core/otg_whitelist.h                   |  172 +-
 drivers/usb/gadget/file_storage.c                  | 3676 ++++++++++
 drivers/usb/host/Kconfig                           |   13 +
 drivers/usb/host/Makefile                          |    2 +
 drivers/usb/host/dwc_common_port/Makefile          |   58 +
 drivers/usb/host/dwc_common_port/Makefile.fbsd     |   17 +
 drivers/usb/host/dwc_common_port/Makefile.linux    |   49 +
 drivers/usb/host/dwc_common_port/changes.txt       |  174 +
 drivers/usb/host/dwc_common_port/doc/doxygen.cfg   |  270 +
 drivers/usb/host/dwc_common_port/dwc_cc.c          |  532 ++
 drivers/usb/host/dwc_common_port/dwc_cc.h          |  225 +
 drivers/usb/host/dwc_common_port/dwc_common_fbsd.c | 1308 ++++
 .../usb/host/dwc_common_port/dwc_common_linux.c    | 1421 ++++
 drivers/usb/host/dwc_common_port/dwc_common_nbsd.c | 1275 ++++
 drivers/usb/host/dwc_common_port/dwc_crypto.c      |  308 +
 drivers/usb/host/dwc_common_port/dwc_crypto.h      |  111 +
 drivers/usb/host/dwc_common_port/dwc_dh.c          |  291 +
 drivers/usb/host/dwc_common_port/dwc_dh.h          |  106 +
 drivers/usb/host/dwc_common_port/dwc_list.h        |  594 ++
 drivers/usb/host/dwc_common_port/dwc_mem.c         |  245 +
 drivers/usb/host/dwc_common_port/dwc_modpow.c      |  636 ++
 drivers/usb/host/dwc_common_port/dwc_modpow.h      |   34 +
 drivers/usb/host/dwc_common_port/dwc_notifier.c    |  319 +
 drivers/usb/host/dwc_common_port/dwc_notifier.h    |  122 +
 drivers/usb/host/dwc_common_port/dwc_os.h          | 1260 ++++
 drivers/usb/host/dwc_common_port/usb.h             |  946 +++
 drivers/usb/host/dwc_otg/Makefile                  |   80 +
 drivers/usb/host/dwc_otg/doc/doxygen.cfg           |  224 +
 drivers/usb/host/dwc_otg/dummy_audio.c             | 1575 +++++
 drivers/usb/host/dwc_otg/dwc_cfi_common.h          |  142 +
 drivers/usb/host/dwc_otg/dwc_otg_adp.c             |  854 +++
 drivers/usb/host/dwc_otg/dwc_otg_adp.h             |   80 +
 drivers/usb/host/dwc_otg/dwc_otg_attr.c            | 1210 ++++
 drivers/usb/host/dwc_otg/dwc_otg_attr.h            |   89 +
 drivers/usb/host/dwc_otg/dwc_otg_cfi.c             | 1876 +++++
 drivers/usb/host/dwc_otg/dwc_otg_cfi.h             |  320 +
 drivers/usb/host/dwc_otg/dwc_otg_cil.c             | 7151 ++++++++++++++++++++
 drivers/usb/host/dwc_otg/dwc_otg_cil.h             | 1464 ++++
 drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c        | 1563 +++++
 drivers/usb/host/dwc_otg/dwc_otg_core_if.h         |  705 ++
 drivers/usb/host/dwc_otg/dwc_otg_dbg.h             |  116 +
 drivers/usb/host/dwc_otg/dwc_otg_driver.c          | 1700 +++++
 drivers/usb/host/dwc_otg/dwc_otg_driver.h          |   86 +
 drivers/usb/host/dwc_otg/dwc_otg_hcd.c             | 3473 ++++++++++
 drivers/usb/host/dwc_otg/dwc_otg_hcd.h             |  824 +++
 drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c        | 1133 ++++
 drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h          |  412 ++
 drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c        | 2106 ++++++
 drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c       |  893 +++
 drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c       |  922 +++
 drivers/usb/host/dwc_otg/dwc_otg_os_dep.h          |  185 +
 drivers/usb/host/dwc_otg/dwc_otg_pcd.c             | 2708 ++++++++
 drivers/usb/host/dwc_otg/dwc_otg_pcd.h             |  266 +
 drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h          |  360 +
 drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c        | 5147 ++++++++++++++
 drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c       | 1358 ++++
 drivers/usb/host/dwc_otg/dwc_otg_regs.h            | 2550 +++++++
 drivers/usb/host/dwc_otg/test/Makefile             |   16 +
 drivers/usb/host/dwc_otg/test/dwc_otg_test.pm      |  337 +
 drivers/usb/host/dwc_otg/test/test_mod_param.pl    |  133 +
 drivers/usb/host/dwc_otg/test/test_sysfs.pl        |  193 +
 64 files changed, 56447 insertions(+), 49 deletions(-)
 create mode 100644 drivers/usb/gadget/file_storage.c
 create mode 100644 drivers/usb/host/dwc_common_port/Makefile
 create mode 100644 drivers/usb/host/dwc_common_port/Makefile.fbsd
 create mode 100644 drivers/usb/host/dwc_common_port/Makefile.linux
 create mode 100644 drivers/usb/host/dwc_common_port/changes.txt
 create mode 100644 drivers/usb/host/dwc_common_port/doc/doxygen.cfg
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_cc.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_cc.h
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_common_fbsd.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_common_linux.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_common_nbsd.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_crypto.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_crypto.h
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_dh.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_dh.h
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_list.h
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_mem.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_modpow.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_modpow.h
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_notifier.c
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_notifier.h
 create mode 100644 drivers/usb/host/dwc_common_port/dwc_os.h
 create mode 100644 drivers/usb/host/dwc_common_port/usb.h
 create mode 100644 drivers/usb/host/dwc_otg/Makefile
 create mode 100644 drivers/usb/host/dwc_otg/doc/doxygen.cfg
 create mode 100644 drivers/usb/host/dwc_otg/dummy_audio.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_cfi_common.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_adp.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_adp.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_attr.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_attr.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cfi.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cfi.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cil.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cil.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_core_if.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_dbg.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_driver.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_driver.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_os_dep.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c
 create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_regs.h
 create mode 100644 drivers/usb/host/dwc_otg/test/Makefile
 create mode 100644 drivers/usb/host/dwc_otg/test/dwc_otg_test.pm
 create mode 100644 drivers/usb/host/dwc_otg/test/test_mod_param.pl
 create mode 100644 drivers/usb/host/dwc_otg/test/test_sysfs.pl

diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index c41feba..0b5c606 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_USB_U132_HCD)    += host/
 obj-$(CONFIG_USB_R8A66597_HCD) += host/
 obj-$(CONFIG_USB_HWA_HCD)      += host/
 obj-$(CONFIG_USB_ISP1760_HCD)  += host/
+obj-$(CONFIG_USB_DWCOTG)       += host/
 obj-$(CONFIG_USB_IMX21_HCD)    += host/
 obj-$(CONFIG_USB_FSL_MPH_DR_OF)        += host/
 
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index acbfeb0..7d675c8 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -152,6 +152,7 @@ int usb_choose_configuration(struct usb_device *udev)
                dev_warn(&udev->dev,
                        "no configuration chosen from %d choice%s\n",
                        num_configs, plural(num_configs));
+               dev_warn(&udev->dev, "No support over %dmA\n", udev->bus_mA);
        }
        return i;
 }
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 444d30e..3ff77fa 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1875,6 +1875,85 @@ free_interfaces:
        if (cp->string == NULL &&
                        !(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))
                cp->string = usb_cache_string(dev, cp->desc.iConfiguration);
+/* Uncomment this define to enable the HS Electrical Test support */
+#define DWC_HS_ELECT_TST 1
+#ifdef DWC_HS_ELECT_TST
+               /* Here we implement the HS Electrical Test support. The
+                * tester uses a vendor ID of 0x1A0A to indicate we should
+                * run a special test sequence. The product ID tells us
+                * which sequence to run. We invoke the test sequence by
+                * sending a non-standard SetFeature command to our root
+                * hub port. Our dwc_otg_hcd_hub_control() routine will
+                * recognize the command and perform the desired test
+                * sequence.
+                */
+               if (dev->descriptor.idVendor == 0x1A0A) {
+                       /* HSOTG Electrical Test */
+                       dev_warn(&dev->dev, "VID from HSOTG Electrical Test Fixture\n");
+
+                       if (dev->bus && dev->bus->root_hub) {
+                               struct usb_device *hdev = dev->bus->root_hub;
+                               dev_warn(&dev->dev, "Got PID 0x%x\n", dev->descriptor.idProduct);
+
+                               switch (dev->descriptor.idProduct) {
+                               case 0x0101:    /* TEST_SE0_NAK */
+                                       dev_warn(&dev->dev, "TEST_SE0_NAK\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x300, NULL, 0, HZ);
+                                       break;
+
+                               case 0x0102:    /* TEST_J */
+                                       dev_warn(&dev->dev, "TEST_J\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x100, NULL, 0, HZ);
+                                       break;
+
+                               case 0x0103:    /* TEST_K */
+                                       dev_warn(&dev->dev, "TEST_K\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x200, NULL, 0, HZ);
+                                       break;
+
+                               case 0x0104:    /* TEST_PACKET */
+                                       dev_warn(&dev->dev, "TEST_PACKET\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x400, NULL, 0, HZ);
+                                       break;
+
+                               case 0x0105:    /* TEST_FORCE_ENABLE */
+                                       dev_warn(&dev->dev, "TEST_FORCE_ENABLE\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x500, NULL, 0, HZ);
+                                       break;
+
+                               case 0x0106:    /* HS_HOST_PORT_SUSPEND_RESUME */
+                                       dev_warn(&dev->dev, "HS_HOST_PORT_SUSPEND_RESUME\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x600, NULL, 0, 40 * HZ);
+                                       break;
+
+                               case 0x0107:    /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
+                                       dev_warn(&dev->dev, "SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x700, NULL, 0, 40 * HZ);
+                                       break;
+
+                               case 0x0108:    /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
+                                       dev_warn(&dev->dev, "SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute\n");
+                                       usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+                                                       USB_REQ_SET_FEATURE, USB_RT_PORT,
+                                                       USB_PORT_FEAT_TEST, 0x800, NULL, 0, 40 * HZ);
+                               }
+                       }
+               }
+#endif /* DWC_HS_ELECT_TST */
 
        /* Now that the interfaces are installed, re-enable LPM. */
        usb_unlocked_enable_lpm(dev);
diff --git a/drivers/usb/core/otg_whitelist.h b/drivers/usb/core/otg_whitelist.h
index e8cdce5..3a0da17 100644
--- a/drivers/usb/core/otg_whitelist.h
+++ b/drivers/usb/core/otg_whitelist.h
@@ -19,33 +19,82 @@
 static struct usb_device_id whitelist_table [] = {
 
 /* hubs are optional in OTG, but very handy ... */
+#define CERT_WITHOUT_HUBS
+#if defined(CERT_WITHOUT_HUBS)
+{ USB_DEVICE( 0x0000, 0x0000 ), }, /* Root HUB Only*/
+#else
 { USB_DEVICE_INFO(USB_CLASS_HUB, 0, 0), },
 { USB_DEVICE_INFO(USB_CLASS_HUB, 0, 1), },
+{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 2), },
+#endif
 
 #ifdef CONFIG_USB_PRINTER              /* ignoring nonstatic linkage! */
 /* FIXME actually, printers are NOT supposed to use device classes;
  * they're supposed to use interface classes...
  */
-{ USB_DEVICE_INFO(7, 1, 1) },
-{ USB_DEVICE_INFO(7, 1, 2) },
-{ USB_DEVICE_INFO(7, 1, 3) },
+//{ USB_DEVICE_INFO(7, 1, 1) },
+//{ USB_DEVICE_INFO(7, 1, 2) },
+//{ USB_DEVICE_INFO(7, 1, 3) },
 #endif
 
 #ifdef CONFIG_USB_NET_CDCETHER
 /* Linux-USB CDC Ethernet gadget */
-{ USB_DEVICE(0x0525, 0xa4a1), },
+//{ USB_DEVICE(0x0525, 0xa4a1), },
 /* Linux-USB CDC Ethernet + RNDIS gadget */
-{ USB_DEVICE(0x0525, 0xa4a2), },
+//{ USB_DEVICE(0x0525, 0xa4a2), },
 #endif
 
 #if    defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE)
 /* gadget zero, for testing */
-{ USB_DEVICE(0x0525, 0xa4a0), },
+//{ USB_DEVICE(0x0525, 0xa4a0), },
 #endif
+   
+/* OPT Tester */
+{ USB_DEVICE( 0x1a0a, 0x0101 ), }, /* TEST_SE0_NAK */
+{ USB_DEVICE( 0x1a0a, 0x0102 ), }, /* Test_J */
+{ USB_DEVICE( 0x1a0a, 0x0103 ), }, /* Test_K */
+{ USB_DEVICE( 0x1a0a, 0x0104 ), }, /* Test_PACKET */
+{ USB_DEVICE( 0x1a0a, 0x0105 ), }, /* Test_FORCE_ENABLE */
+{ USB_DEVICE( 0x1a0a, 0x0106 ), }, /* HS_PORT_SUSPEND_RESUME  */
+{ USB_DEVICE( 0x1a0a, 0x0107 ), }, /* SINGLE_STEP_GET_DESCRIPTOR setup */
+{ USB_DEVICE( 0x1a0a, 0x0108 ), }, /* SINGLE_STEP_GET_DESCRIPTOR execute */
+
+/* Sony cameras */        
+{ USB_DEVICE_VER(0x054c,0x0010,0x0410, 0x0500), },
+   
+/* Memory Devices */
+//{ USB_DEVICE( 0x0781, 0x5150 ), }, /* SanDisk */
+//{ USB_DEVICE( 0x05DC, 0x0080 ), }, /* Lexar */
+//{ USB_DEVICE( 0x4146, 0x9281 ), }, /* IOMEGA */
+//{ USB_DEVICE( 0x067b, 0x2507 ), }, /* Hammer 20GB External HD  */
+{ USB_DEVICE( 0x0EA0, 0x2168 ), }, /* Ours Technology Inc. (BUFFALO ClipDrive)*/
+//{ USB_DEVICE( 0x0457, 0x0150 ), }, /* Silicon Integrated Systems Corp. */
+
+/* HP Printers */
+//{ USB_DEVICE( 0x03F0, 0x1102 ), }, /* HP Photosmart 245 */
+//{ USB_DEVICE( 0x03F0, 0x1302 ), }, /* HP Photosmart 370 Series */
+
+/* Speakers */
+//{ USB_DEVICE( 0x0499, 0x3002 ), }, /* YAMAHA YST-MS35D USB Speakers */
+//{ USB_DEVICE( 0x0672, 0x1041 ), }, /* Labtec USB Headset */
 
 { }    /* Terminating entry */
 };
 
+static inline void report_errors(struct usb_device *dev)
+{
+       /* OTG MESSAGE: report errors here, customize to match your product */
+       dev_info(&dev->dev, "device Vendor:%04x Product:%04x is not supported\n",
+                le16_to_cpu(dev->descriptor.idVendor),
+                le16_to_cpu(dev->descriptor.idProduct));
+        if (USB_CLASS_HUB == dev->descriptor.bDeviceClass){
+                dev_printk(KERN_CRIT, &dev->dev, "Unsupported Hub Topology\n");
+        } else {        
+                dev_printk(KERN_CRIT, &dev->dev, "Attached Device is not Supported\n");
+        }
+}
+
+
 static int is_targeted(struct usb_device *dev)
 {
        struct usb_device_id    *id = whitelist_table;
@@ -55,58 +104,83 @@ static int is_targeted(struct usb_device *dev)
                return 1;
 
        /* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
-       if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
-            le16_to_cpu(dev->descriptor.idProduct) == 0xbadd))
-               return 0;
-
-       /* NOTE: can't use usb_match_id() since interface caches
-        * aren't set up yet. this is cut/paste from that code.
-        */
-       for (id = whitelist_table; id->match_flags; id++) {
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
-                   id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
-                       continue;
-
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
-                   id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
-                       continue;
-
-               /* No need to test id->bcdDevice_lo != 0, since 0 is never
-                  greater than any unsigned number. */
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
-                   (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
-                       continue;
-
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
-                   (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
-                       continue;
-
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
-                   (id->bDeviceClass != dev->descriptor.bDeviceClass))
-                       continue;
-
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
-                   (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
-                       continue;
-
-               if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
-                   (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
-                       continue;
+       if (dev->descriptor.idVendor == 0x1a0a && 
+            dev->descriptor.idProduct == 0xbadd) {
+                return 0;
+       } else if (!enable_whitelist) {
+               return 1;
+        } else {
+
+#ifdef DEBUG
+                dev_dbg(&dev->dev, "device V:%04x P:%04x DC:%04x SC:%04x PR:%04x \n",
+                        dev->descriptor.idVendor,
+                        dev->descriptor.idProduct,
+                        dev->descriptor.bDeviceClass,
+                        dev->descriptor.bDeviceSubClass,
+                        dev->descriptor.bDeviceProtocol);
+#endif
 
                return 1;
+               /* NOTE: can't use usb_match_id() since interface caches
+                * aren't set up yet. this is cut/paste from that code.
+                */
+               for (id = whitelist_table; id->match_flags; id++) {
+#ifdef DEBUG
+                       dev_dbg(&dev->dev, 
+                               "ID: V:%04x P:%04x DC:%04x SC:%04x PR:%04x \n",
+                               id->idVendor,
+                               id->idProduct,
+                               id->bDeviceClass,
+                               id->bDeviceSubClass,
+                               id->bDeviceProtocol);
+#endif                       
+
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
+                           id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
+                               continue;
+
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
+                           id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
+                               continue;
+
+                       /* No need to test id->bcdDevice_lo != 0, since 0 is never
+                          greater than any unsigned number. */
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
+                           (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
+                               continue;
+
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
+                           (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
+                               continue;
+
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
+                           (id->bDeviceClass != dev->descriptor.bDeviceClass))
+                               continue;
+
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
+                           (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
+                               continue;
+
+                       if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
+                           (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
+                               continue;
+
+                       return 1;
+               }
        }
 
        /* add other match criteria here ... */
 
-
-       /* OTG MESSAGE: report errors here, customize to match your product */
-       dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
-               le16_to_cpu(dev->descriptor.idVendor),
-               le16_to_cpu(dev->descriptor.idProduct));
 #ifdef CONFIG_USB_OTG_WHITELIST
+       report_errors(dev);
        return 0;
 #else
-       return 1;
+       if (enable_whitelist) {
+               report_errors(dev);
+               return 0;
+       } else {
+               return 1;
+       }
 #endif
 }
 
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
new file mode 100644
index 0000000..a896d73
--- /dev/null
+++ b/drivers/usb/gadget/file_storage.c
@@ -0,0 +1,3676 @@
+/*
+ * file_storage.c -- File-backed USB Storage Gadget, for USB development
+ *
+ * Copyright (C) 2003-2008 Alan Stern
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*
+ * The File-backed Storage Gadget acts as a USB Mass Storage device,
+ * appearing to the host as a disk drive or as a CD-ROM drive.  In addition
+ * to providing an example of a genuinely useful gadget driver for a USB
+ * device, it also illustrates a technique of double-buffering for increased
+ * throughput.  Last but not least, it gives an easy way to probe the
+ * behavior of the Mass Storage drivers in a USB host.
+ *
+ * Backing storage is provided by a regular file or a block device, specified
+ * by the "file" module parameter.  Access can be limited to read-only by
+ * setting the optional "ro" module parameter.  (For CD-ROM emulation,
+ * access is always read-only.)  The gadget will indicate that it has
+ * removable media if the optional "removable" module parameter is set.
+ *
+ * The gadget supports the Control-Bulk (CB), Control-Bulk-Interrupt (CBI),
+ * and Bulk-Only (also known as Bulk-Bulk-Bulk or BBB) transports, selected
+ * by the optional "transport" module parameter.  It also supports the
+ * following protocols: RBC (0x01), ATAPI or SFF-8020i (0x02), QIC-157 (0c03),
+ * UFI (0x04), SFF-8070i (0x05), and transparent SCSI (0x06), selected by
+ * the optional "protocol" module parameter.  In addition, the default
+ * Vendor ID, Product ID, release number and serial number can be overridden.
+ *
+ * There is support for multiple logical units (LUNs), each of which has
+ * its own backing file.  The number of LUNs can be set using the optional
+ * "luns" module parameter (anywhere from 1 to 8), and the corresponding
+ * files are specified using comma-separated lists for "file" and "ro".
+ * The default number of LUNs is taken from the number of "file" elements;
+ * it is 1 if "file" is not given.  If "removable" is not set then a backing
+ * file must be specified for each LUN.  If it is set, then an unspecified
+ * or empty backing filename means the LUN's medium is not loaded.  Ideally
+ * each LUN would be settable independently as a disk drive or a CD-ROM
+ * drive, but currently all LUNs have to be the same type.  The CD-ROM
+ * emulation includes a single data track and no audio tracks; hence there
+ * need be only one backing file per LUN.
+ *
+ * Requirements are modest; only a bulk-in and a bulk-out endpoint are
+ * needed (an interrupt-out endpoint is also needed for CBI).  The memory
+ * requirement amounts to two 16K buffers, size configurable by a parameter.
+ * Support is included for both full-speed and high-speed operation.
+ *
+ * Note that the driver is slightly non-portable in that it assumes a
+ * single memory/DMA buffer will be useable for bulk-in, bulk-out, and
+ * interrupt-in endpoints.  With most device controllers this isn't an
+ * issue, but there may be some with hardware restrictions that prevent
+ * a buffer from being used by more than one endpoint.
+ *
+ * Module options:
+ *
+ *     file=filename[,filename...]
+ *                             Required if "removable" is not set, names of
+ *                                     the files or block devices used for
+ *                                     backing storage
+ *     serial=HHHH...          Required serial number (string of hex chars)
+ *     ro=b[,b...]             Default false, booleans for read-only access
+ *     removable               Default false, boolean for removable media
+ *     luns=N                  Default N = number of filenames, number of
+ *                                     LUNs to support
+ *     nofua=b[,b...]          Default false, booleans for ignore FUA flag
+ *                                     in SCSI WRITE(10,12) commands
+ *     stall                   Default determined according to the type of
+ *                                     USB device controller (usually true),
+ *                                     boolean to permit the driver to halt
+ *                                     bulk endpoints
+ *     cdrom                   Default false, boolean for whether to emulate
+ *                                     a CD-ROM drive
+ *     transport=XXX           Default BBB, transport name (CB, CBI, or BBB)
+ *     protocol=YYY            Default SCSI, protocol name (RBC, 8020 or
+ *                                     ATAPI, QIC, UFI, 8070, or SCSI;
+ *                                     also 1 - 6)
+ *     vendor=0xVVVV           Default 0x0525 (NetChip), USB Vendor ID
+ *     product=0xPPPP          Default 0xa4a5 (FSG), USB Product ID
+ *     release=0xRRRR          Override the USB release number (bcdDevice)
+ *     buflen=N                Default N=16384, buffer size used (will be
+ *                                     rounded down to a multiple of
+ *                                     PAGE_CACHE_SIZE)
+ *
+ * If CONFIG_USB_FILE_STORAGE_TEST is not set, only the "file", "serial", "ro",
+ * "removable", "luns", "nofua", "stall", and "cdrom" options are available;
+ * default values are used for everything else.
+ *
+ * The pathnames of the backing files and the ro settings are available in
+ * the attribute files "file", "nofua", and "ro" in the lun<n> subdirectory of
+ * the gadget's sysfs directory.  If the "removable" option is set, writing to
+ * these files will simulate ejecting/loading the medium (writing an empty
+ * line means eject) and adjusting a write-enable tab.  Changes to the ro
+ * setting are not allowed when the medium is loaded or if CD-ROM emulation
+ * is being used.
+ *
+ * This gadget driver is heavily based on "Gadget Zero" by David Brownell.
+ * The driver's SCSI command interface was based on the "Information
+ * technology - Small Computer System Interface - 2" document from
+ * X3T9.2 Project 375D, Revision 10L, 7-SEP-93, available at
+ * <http://www.t10.org/ftp/t10/drafts/s2/s2-r10l.pdf>.  The single exception
+ * is opcode 0x23 (READ FORMAT CAPACITIES), which was based on the
+ * "Universal Serial Bus Mass Storage Class UFI Command Specification"
+ * document, Revision 1.0, December 14, 1998, available at
+ * <http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf>.
+ */
+
+
+/*
+ *                             Driver Design
+ *
+ * The FSG driver is fairly straightforward.  There is a main kernel
+ * thread that handles most of the work.  Interrupt routines field
+ * callbacks from the controller driver: bulk- and interrupt-request
+ * completion notifications, endpoint-0 events, and disconnect events.
+ * Completion events are passed to the main thread by wakeup calls.  Many
+ * ep0 requests are handled at interrupt time, but SetInterface,
+ * SetConfiguration, and device reset requests are forwarded to the
+ * thread in the form of "exceptions" using SIGUSR1 signals (since they
+ * should interrupt any ongoing file I/O operations).
+ *
+ * The thread's main routine implements the standard command/data/status
+ * parts of a SCSI interaction.  It and its subroutines are full of tests
+ * for pending signals/exceptions -- all this polling is necessary since
+ * the kernel has no setjmp/longjmp equivalents.  (Maybe this is an
+ * indication that the driver really wants to be running in userspace.)
+ * An important point is that so long as the thread is alive it keeps an
+ * open reference to the backing file.  This will prevent unmounting
+ * the backing file's underlying filesystem and could cause problems
+ * during system shutdown, for example.  To prevent such problems, the
+ * thread catches INT, TERM, and KILL signals and converts them into
+ * an EXIT exception.
+ *
+ * In normal operation the main thread is started during the gadget's
+ * fsg_bind() callback and stopped during fsg_unbind().  But it can also
+ * exit when it receives a signal, and there's no point leaving the
+ * gadget running when the thread is dead.  So just before the thread
+ * exits, it deregisters the gadget driver.  This makes things a little
+ * tricky: The driver is deregistered at two places, and the exiting
+ * thread can indirectly call fsg_unbind() which in turn can tell the
+ * thread to exit.  The first problem is resolved through the use of the
+ * REGISTERED atomic bitflag; the driver will only be deregistered once.
+ * The second problem is resolved by having fsg_unbind() check
+ * fsg->state; it won't try to stop the thread if the state is already
+ * FSG_STATE_TERMINATED.
+ *
+ * To provide maximum throughput, the driver uses a circular pipeline of
+ * buffer heads (struct fsg_buffhd).  In principle the pipeline can be
+ * arbitrarily long; in practice the benefits don't justify having more
+ * than 2 stages (i.e., double buffering).  But it helps to think of the
+ * pipeline as being a long one.  Each buffer head contains a bulk-in and
+ * a bulk-out request pointer (since the buffer can be used for both
+ * output and input -- directions always are given from the host's
+ * point of view) as well as a pointer to the buffer and various state
+ * variables.
+ *
+ * Use of the pipeline follows a simple protocol.  There is a variable
+ * (fsg->next_buffhd_to_fill) that points to the next buffer head to use.
+ * At any time that buffer head may still be in use from an earlier
+ * request, so each buffer head has a state variable indicating whether
+ * it is EMPTY, FULL, or BUSY.  Typical use involves waiting for the
+ * buffer head to be EMPTY, filling the buffer either by file I/O or by
+ * USB I/O (during which the buffer head is BUSY), and marking the buffer
+ * head FULL when the I/O is complete.  Then the buffer will be emptied
+ * (again possibly by USB I/O, during which it is marked BUSY) and
+ * finally marked EMPTY again (possibly by a completion routine).
+ *
+ * A module parameter tells the driver to avoid stalling the bulk
+ * endpoints wherever the transport specification allows.  This is
+ * necessary for some UDCs like the SuperH, which cannot reliably clear a
+ * halt on a bulk endpoint.  However, under certain circumstances the
+ * Bulk-only specification requires a stall.  In such cases the driver
+ * will halt the endpoint and set a flag indicating that it should clear
+ * the halt in software during the next device reset.  Hopefully this
+ * will permit everything to work correctly.  Furthermore, although the
+ * specification allows the bulk-out endpoint to halt when the host sends
+ * too much data, implementing this would cause an unavoidable race.
+ * The driver will always use the "no-stall" approach for OUT transfers.
+ *
+ * One subtle point concerns sending status-stage responses for ep0
+ * requests.  Some of these requests, such as device reset, can involve
+ * interrupting an ongoing file I/O operation, which might take an
+ * arbitrarily long time.  During that delay the host might give up on
+ * the original ep0 request and issue a new one.  When that happens the
+ * driver should not notify the host about completion of the original
+ * request, as the host will no longer be waiting for it.  So the driver
+ * assigns to each ep0 request a unique tag, and it keeps track of the
+ * tag value of the request associated with a long-running exception
+ * (device-reset, interface-change, or configuration-change).  When the
+ * exception handler is finished, the status-stage response is submitted
+ * only if the current ep0 request tag is equal to the exception request
+ * tag.  Thus only the most recently received ep0 request will get a
+ * status-stage response.
+ *
+ * Warning: This driver source file is too long.  It ought to be split up
+ * into a header file plus about 3 separate .c files, to handle the details
+ * of the Gadget, USB Mass Storage, and SCSI protocols.
+ */
+
+
+/* #define VERBOSE_DEBUG */
+/* #define DUMP_MSGS */
+
+
+#include <linux/blkdev.h>
+#include <linux/completion.h>
+#include <linux/dcache.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/fcntl.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/kref.h>
+#include <linux/kthread.h>
+#include <linux/limits.h>
+#include <linux/module.h>
+#include <linux/rwsem.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/freezer.h>
+#include <linux/utsname.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include "gadget_chips.h"
+
+
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+/*-------------------------------------------------------------------------*/
+
+#define DRIVER_DESC            "File-backed Storage Gadget"
+#define DRIVER_NAME            "g_file_storage"
+#define DRIVER_VERSION         "1 September 2010"
+
+static       char fsg_string_manufacturer[64];
+static const char fsg_string_product[] = DRIVER_DESC;
+static const char fsg_string_config[] = "Self-powered";
+static const char fsg_string_interface[] = "Mass Storage";
+
+
+#include "storage_common.c"
+
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Alan Stern");
+MODULE_LICENSE("Dual BSD/GPL");
+
+/*
+ * This driver assumes self-powered hardware and has no way for users to
+ * trigger remote wakeup.  It uses autoconfiguration to select endpoints
+ * and endpoint addresses.
+ */
+
+
+/*-------------------------------------------------------------------------*/
+
+
+/* Encapsulate the module parameter settings */
+
+static struct {
+       char            *file[FSG_MAX_LUNS];
+       char            *serial;
+       bool            ro[FSG_MAX_LUNS];
+       bool            nofua[FSG_MAX_LUNS];
+       unsigned int    num_filenames;
+       unsigned int    num_ros;
+       unsigned int    num_nofuas;
+       unsigned int    nluns;
+
+       bool            removable;
+       bool            can_stall;
+       bool            cdrom;
+
+       char            *transport_parm;
+       char            *protocol_parm;
+       unsigned short  vendor;
+       unsigned short  product;
+       unsigned short  release;
+       unsigned int    buflen;
+
+       int             transport_type;
+       char            *transport_name;
+       int             protocol_type;
+       char            *protocol_name;
+
+} mod_data = {                                 // Default values
+       .transport_parm         = "BBB",
+       .protocol_parm          = "SCSI",
+       .removable              = 0,
+       .can_stall              = 1,
+       .cdrom                  = 0,
+       .vendor                 = FSG_VENDOR_ID,
+       .product                = FSG_PRODUCT_ID,
+       .release                = 0xffff,       // Use controller chip type
+       .buflen                 = 16384,
+       };
+
+
+module_param_array_named(file, mod_data.file, charp, &mod_data.num_filenames,
+               S_IRUGO);
+MODULE_PARM_DESC(file, "names of backing files or devices");
+
+module_param_named(serial, mod_data.serial, charp, S_IRUGO);
+MODULE_PARM_DESC(serial, "USB serial number");
+
+module_param_array_named(ro, mod_data.ro, bool, &mod_data.num_ros, S_IRUGO);
+MODULE_PARM_DESC(ro, "true to force read-only");
+
+module_param_array_named(nofua, mod_data.nofua, bool, &mod_data.num_nofuas,
+               S_IRUGO);
+MODULE_PARM_DESC(nofua, "true to ignore SCSI WRITE(10,12) FUA bit");
+
+module_param_named(luns, mod_data.nluns, uint, S_IRUGO);
+MODULE_PARM_DESC(luns, "number of LUNs");
+
+module_param_named(removable, mod_data.removable, bool, S_IRUGO);
+MODULE_PARM_DESC(removable, "true to simulate removable media");
+
+module_param_named(stall, mod_data.can_stall, bool, S_IRUGO);
+MODULE_PARM_DESC(stall, "false to prevent bulk stalls");
+
+module_param_named(cdrom, mod_data.cdrom, bool, S_IRUGO);
+MODULE_PARM_DESC(cdrom, "true to emulate cdrom instead of disk");
+
+/* In the non-TEST version, only the module parameters listed above
+ * are available. */
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+
+module_param_named(transport, mod_data.transport_parm, charp, S_IRUGO);
+MODULE_PARM_DESC(transport, "type of transport (BBB, CBI, or CB)");
+
+module_param_named(protocol, mod_data.protocol_parm, charp, S_IRUGO);
+MODULE_PARM_DESC(protocol, "type of protocol (RBC, 8020, QIC, UFI, "
+               "8070, or SCSI)");
+
+module_param_named(vendor, mod_data.vendor, ushort, S_IRUGO);
+MODULE_PARM_DESC(vendor, "USB Vendor ID");
+
+module_param_named(product, mod_data.product, ushort, S_IRUGO);
+MODULE_PARM_DESC(product, "USB Product ID");
+
+module_param_named(release, mod_data.release, ushort, S_IRUGO);
+MODULE_PARM_DESC(release, "USB release number");
+
+module_param_named(buflen, mod_data.buflen, uint, S_IRUGO);
+MODULE_PARM_DESC(buflen, "I/O buffer size");
+
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+/*
+ * These definitions will permit the compiler to avoid generating code for
+ * parts of the driver that aren't used in the non-TEST version.  Even gcc
+ * can recognize when a test of a constant expression yields a dead code
+ * path.
+ */
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+
+#define transport_is_bbb()     (mod_data.transport_type == USB_PR_BULK)
+#define transport_is_cbi()     (mod_data.transport_type == USB_PR_CBI)
+#define protocol_is_scsi()     (mod_data.protocol_type == USB_SC_SCSI)
+
+#else
+
+#define transport_is_bbb()     1
+#define transport_is_cbi()     0
+#define protocol_is_scsi()     1
+
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+/*-------------------------------------------------------------------------*/
+
+
+struct fsg_dev {
+       /* lock protects: state, all the req_busy's, and cbbuf_cmnd */
+       spinlock_t              lock;
+       struct usb_gadget       *gadget;
+
+       /* filesem protects: backing files in use */
+       struct rw_semaphore     filesem;
+
+       /* reference counting: wait until all LUNs are released */
+       struct kref             ref;
+
+       struct usb_ep           *ep0;           // Handy copy of gadget->ep0
+       struct usb_request      *ep0req;        // For control responses
+       unsigned int            ep0_req_tag;
+       const char              *ep0req_name;
+
+       struct usb_request      *intreq;        // For interrupt responses
+       int                     intreq_busy;
+       struct fsg_buffhd       *intr_buffhd;
+
+       unsigned int            bulk_out_maxpacket;
+       enum fsg_state          state;          // For exception handling
+       unsigned int            exception_req_tag;
+
+       u8                      config, new_config;
+
+       unsigned int            running : 1;
+       unsigned int            bulk_in_enabled : 1;
+       unsigned int            bulk_out_enabled : 1;
+       unsigned int            intr_in_enabled : 1;
+       unsigned int            phase_error : 1;
+       unsigned int            short_packet_received : 1;
+       unsigned int            bad_lun_okay : 1;
+
+       unsigned long           atomic_bitflags;
+#define REGISTERED             0
+#define IGNORE_BULK_OUT                1
+#define SUSPENDED              2
+
+       struct usb_ep           *bulk_in;
+       struct usb_ep           *bulk_out;
+       struct usb_ep           *intr_in;
+
+       struct fsg_buffhd       *next_buffhd_to_fill;
+       struct fsg_buffhd       *next_buffhd_to_drain;
+
+       int                     thread_wakeup_needed;
+       struct completion       thread_notifier;
+       struct task_struct      *thread_task;
+
+       int                     cmnd_size;
+       u8                      cmnd[MAX_COMMAND_SIZE];
+       enum data_direction     data_dir;
+       u32                     data_size;
+       u32                     data_size_from_cmnd;
+       u32                     tag;
+       unsigned int            lun;
+       u32                     residue;
+       u32                     usb_amount_left;
+
+       /* The CB protocol offers no way for a host to know when a command
+        * has completed.  As a result the next command may arrive early,
+        * and we will still have to handle it.  For that reason we need
+        * a buffer to store new commands when using CB (or CBI, which
+        * does not oblige a host to wait for command completion either). */
+       int                     cbbuf_cmnd_size;
+       u8                      cbbuf_cmnd[MAX_COMMAND_SIZE];
+
+       unsigned int            nluns;
+       struct fsg_lun          *luns;
+       struct fsg_lun          *curlun;
+       /* Must be the last entry */
+       struct fsg_buffhd       buffhds[];
+};
+
+typedef void (*fsg_routine_t)(struct fsg_dev *);
+
+static int exception_in_progress(struct fsg_dev *fsg)
+{
+       return (fsg->state > FSG_STATE_IDLE);
+}
+
+/* Make bulk-out requests be divisible by the maxpacket size */
+static void set_bulk_out_req_length(struct fsg_dev *fsg,
+               struct fsg_buffhd *bh, unsigned int length)
+{
+       unsigned int    rem;
+
+       bh->bulk_out_intended_length = length;
+       rem = length % fsg->bulk_out_maxpacket;
+       if (rem > 0)
+               length += fsg->bulk_out_maxpacket - rem;
+       bh->outreq->length = length;
+}
+
+static struct fsg_dev                  *the_fsg;
+static struct usb_gadget_driver                fsg_driver;
+
+
+/*-------------------------------------------------------------------------*/
+
+static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)
+{
+       const char      *name;
+
+       if (ep == fsg->bulk_in)
+               name = "bulk-in";
+       else if (ep == fsg->bulk_out)
+               name = "bulk-out";
+       else
+               name = ep->name;
+       DBG(fsg, "%s set halt\n", name);
+       return usb_ep_set_halt(ep);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * DESCRIPTORS ... most are static, but strings and (full) configuration
+ * descriptors are built on demand.  Also the (static) config and interface
+ * descriptors are adjusted during fsg_bind().
+ */
+
+/* There is only one configuration. */
+#define        CONFIG_VALUE            1
+
+static struct usb_device_descriptor
+device_desc = {
+       .bLength =              sizeof device_desc,
+       .bDescriptorType =      USB_DT_DEVICE,
+
+       .bcdUSB =               cpu_to_le16(0x0200),
+       .bDeviceClass =         USB_CLASS_PER_INTERFACE,
+
+       /* The next three values can be overridden by module parameters */
+       .idVendor =             cpu_to_le16(FSG_VENDOR_ID),
+       .idProduct =            cpu_to_le16(FSG_PRODUCT_ID),
+       .bcdDevice =            cpu_to_le16(0xffff),
+
+       .iManufacturer =        FSG_STRING_MANUFACTURER,
+       .iProduct =             FSG_STRING_PRODUCT,
+       .iSerialNumber =        FSG_STRING_SERIAL,
+       .bNumConfigurations =   1,
+};
+
+static struct usb_config_descriptor
+config_desc = {
+       .bLength =              sizeof config_desc,
+       .bDescriptorType =      USB_DT_CONFIG,
+
+       /* wTotalLength computed by usb_gadget_config_buf() */
+       .bNumInterfaces =       1,
+       .bConfigurationValue =  CONFIG_VALUE,
+       .iConfiguration =       FSG_STRING_CONFIG,
+       .bmAttributes =         USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+       .bMaxPower =            CONFIG_USB_GADGET_VBUS_DRAW / 2,
+};
+
+
+static struct usb_qualifier_descriptor
+dev_qualifier = {
+       .bLength =              sizeof dev_qualifier,
+       .bDescriptorType =      USB_DT_DEVICE_QUALIFIER,
+
+       .bcdUSB =               cpu_to_le16(0x0200),
+       .bDeviceClass =         USB_CLASS_PER_INTERFACE,
+
+       .bNumConfigurations =   1,
+};
+
+static int populate_bos(struct fsg_dev *fsg, u8 *buf)
+{
+       memcpy(buf, &fsg_bos_desc, USB_DT_BOS_SIZE);
+       buf += USB_DT_BOS_SIZE;
+
+       memcpy(buf, &fsg_ext_cap_desc, USB_DT_USB_EXT_CAP_SIZE);
+       buf += USB_DT_USB_EXT_CAP_SIZE;
+
+       memcpy(buf, &fsg_ss_cap_desc, USB_DT_USB_SS_CAP_SIZE);
+
+       return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE
+               + USB_DT_USB_EXT_CAP_SIZE;
+}
+
+/*
+ * Config descriptors must agree with the code that sets configurations
+ * and with code managing interfaces and their altsettings.  They must
+ * also handle different speeds and other-speed requests.
+ */
+static int populate_config_buf(struct usb_gadget *gadget,
+               u8 *buf, u8 type, unsigned index)
+{
+       enum usb_device_speed                   speed = gadget->speed;
+       int                                     len;
+       const struct usb_descriptor_header      **function;
+
+       if (index > 0)
+               return -EINVAL;
+
+       if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG)
+               speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed;
+       function = gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH
+               ? (const struct usb_descriptor_header **)fsg_hs_function
+               : (const struct usb_descriptor_header **)fsg_fs_function;
+
+       /* for now, don't advertise srp-only devices */
+       if (!gadget_is_otg(gadget))
+               function++;
+
+       len = usb_gadget_config_buf(&config_desc, buf, EP0_BUFSIZE, function);
+       ((struct usb_config_descriptor *) buf)->bDescriptorType = type;
+       return len;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* These routines may be called in process context or in_irq */
+
+/* Caller must hold fsg->lock */
+static void wakeup_thread(struct fsg_dev *fsg)
+{
+       /* Tell the main thread that something has happened */
+       fsg->thread_wakeup_needed = 1;
+       if (fsg->thread_task)
+               wake_up_process(fsg->thread_task);
+}
+
+
+static void raise_exception(struct fsg_dev *fsg, enum fsg_state new_state)
+{
+       unsigned long           flags;
+
+       /* Do nothing if a higher-priority exception is already in progress.
+        * If a lower-or-equal priority exception is in progress, preempt it
+        * and notify the main thread by sending it a signal. */
+       spin_lock_irqsave(&fsg->lock, flags);
+       if (fsg->state <= new_state) {
+               fsg->exception_req_tag = fsg->ep0_req_tag;
+               fsg->state = new_state;
+               if (fsg->thread_task)
+                       send_sig_info(SIGUSR1, SEND_SIG_FORCED,
+                                       fsg->thread_task);
+       }
+       spin_unlock_irqrestore(&fsg->lock, flags);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* The disconnect callback and ep0 routines.  These always run in_irq,
+ * except that ep0_queue() is called in the main thread to acknowledge
+ * completion of various requests: set config, set interface, and
+ * Bulk-only device reset. */
+
+static void fsg_disconnect(struct usb_gadget *gadget)
+{
+       struct fsg_dev          *fsg = get_gadget_data(gadget);
+
+       DBG(fsg, "disconnect or port reset\n");
+       raise_exception(fsg, FSG_STATE_DISCONNECT);
+}
+
+
+static int ep0_queue(struct fsg_dev *fsg)
+{
+       int     rc;
+
+       rc = usb_ep_queue(fsg->ep0, fsg->ep0req, GFP_ATOMIC);
+       if (rc != 0 && rc != -ESHUTDOWN) {
+
+               /* We can't do much more than wait for a reset */
+               WARNING(fsg, "error in submission: %s --> %d\n",
+                               fsg->ep0->name, rc);
+       }
+       return rc;
+}
+
+static void ep0_complete(struct usb_ep *ep, struct usb_request *req)
+{
+       struct fsg_dev          *fsg = ep->driver_data;
+
+       if (req->actual > 0)
+               dump_msg(fsg, fsg->ep0req_name, req->buf, req->actual);
+       if (req->status || req->actual != req->length)
+               DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+                               req->status, req->actual, req->length);
+       if (req->status == -ECONNRESET)         // Request was cancelled
+               usb_ep_fifo_flush(ep);
+
+       if (req->status == 0 && req->context)
+               ((fsg_routine_t) (req->context))(fsg);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Bulk and interrupt endpoint completion handlers.
+ * These always run in_irq. */
+
+static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req)
+{
+       struct fsg_dev          *fsg = ep->driver_data;
+       struct fsg_buffhd       *bh = req->context;
+
+       if (req->status || req->actual != req->length)
+               DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+                               req->status, req->actual, req->length);
+       if (req->status == -ECONNRESET)         // Request was cancelled
+               usb_ep_fifo_flush(ep);
+
+       /* Hold the lock while we update the request and buffer states */
+       smp_wmb();
+       spin_lock(&fsg->lock);
+       bh->inreq_busy = 0;
+       bh->state = BUF_STATE_EMPTY;
+       wakeup_thread(fsg);
+       spin_unlock(&fsg->lock);
+}
+
+static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req)
+{
+       struct fsg_dev          *fsg = ep->driver_data;
+       struct fsg_buffhd       *bh = req->context;
+
+       dump_msg(fsg, "bulk-out", req->buf, req->actual);
+       if (req->status || req->actual != bh->bulk_out_intended_length)
+               DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+                               req->status, req->actual,
+                               bh->bulk_out_intended_length);
+       if (req->status == -ECONNRESET)         // Request was cancelled
+               usb_ep_fifo_flush(ep);
+
+       /* Hold the lock while we update the request and buffer states */
+       smp_wmb();
+       spin_lock(&fsg->lock);
+       bh->outreq_busy = 0;
+       bh->state = BUF_STATE_FULL;
+       wakeup_thread(fsg);
+       spin_unlock(&fsg->lock);
+}
+
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+static void intr_in_complete(struct usb_ep *ep, struct usb_request *req)
+{
+       struct fsg_dev          *fsg = ep->driver_data;
+       struct fsg_buffhd       *bh = req->context;
+
+       if (req->status || req->actual != req->length)
+               DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+                               req->status, req->actual, req->length);
+       if (req->status == -ECONNRESET)         // Request was cancelled
+               usb_ep_fifo_flush(ep);
+
+       /* Hold the lock while we update the request and buffer states */
+       smp_wmb();
+       spin_lock(&fsg->lock);
+       fsg->intreq_busy = 0;
+       bh->state = BUF_STATE_EMPTY;
+       wakeup_thread(fsg);
+       spin_unlock(&fsg->lock);
+}
+
+#else
+static void intr_in_complete(struct usb_ep *ep, struct usb_request *req)
+{}
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Ep0 class-specific handlers.  These always run in_irq. */
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct usb_request      *req = fsg->ep0req;
+       static u8               cbi_reset_cmnd[6] = {
+                       SEND_DIAGNOSTIC, 4, 0xff, 0xff, 0xff, 0xff};
+
+       /* Error in command transfer? */
+       if (req->status || req->length != req->actual ||
+                       req->actual < 6 || req->actual > MAX_COMMAND_SIZE) {
+
+               /* Not all controllers allow a protocol stall after
+                * receiving control-out data, but we'll try anyway. */
+               fsg_set_halt(fsg, fsg->ep0);
+               return;                 // Wait for reset
+       }
+
+       /* Is it the special reset command? */
+       if (req->actual >= sizeof cbi_reset_cmnd &&
+                       memcmp(req->buf, cbi_reset_cmnd,
+                               sizeof cbi_reset_cmnd) == 0) {
+
+               /* Raise an exception to stop the current operation
+                * and reinitialize our state. */
+               DBG(fsg, "cbi reset request\n");
+               raise_exception(fsg, FSG_STATE_RESET);
+               return;
+       }
+
+       VDBG(fsg, "CB[I] accept device-specific command\n");
+       spin_lock(&fsg->lock);
+
+       /* Save the command for later */
+       if (fsg->cbbuf_cmnd_size)
+               WARNING(fsg, "CB[I] overwriting previous command\n");
+       fsg->cbbuf_cmnd_size = req->actual;
+       memcpy(fsg->cbbuf_cmnd, req->buf, fsg->cbbuf_cmnd_size);
+
+       wakeup_thread(fsg);
+       spin_unlock(&fsg->lock);
+}
+
+#else
+static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{}
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+static int class_setup_req(struct fsg_dev *fsg,
+               const struct usb_ctrlrequest *ctrl)
+{
+       struct usb_request      *req = fsg->ep0req;
+       int                     value = -EOPNOTSUPP;
+       u16                     w_index = le16_to_cpu(ctrl->wIndex);
+       u16                     w_value = le16_to_cpu(ctrl->wValue);
+       u16                     w_length = le16_to_cpu(ctrl->wLength);
+
+       if (!fsg->config)
+               return value;
+
+       /* Handle Bulk-only class-specific requests */
+       if (transport_is_bbb()) {
+               switch (ctrl->bRequest) {
+
+               case US_BULK_RESET_REQUEST:
+                       if (ctrl->bRequestType != (USB_DIR_OUT |
+                                       USB_TYPE_CLASS | USB_RECIP_INTERFACE))
+                               break;
+                       if (w_index != 0 || w_value != 0 || w_length != 0) {
+                               value = -EDOM;
+                               break;
+                       }
+
+                       /* Raise an exception to stop the current operation
+                        * and reinitialize our state. */
+                       DBG(fsg, "bulk reset request\n");
+                       raise_exception(fsg, FSG_STATE_RESET);
+                       value = DELAYED_STATUS;
+                       break;
+
+               case US_BULK_GET_MAX_LUN:
+                       if (ctrl->bRequestType != (USB_DIR_IN |
+                                       USB_TYPE_CLASS | USB_RECIP_INTERFACE))
+                               break;
+                       if (w_index != 0 || w_value != 0 || w_length != 1) {
+                               value = -EDOM;
+                               break;
+                       }
+                       VDBG(fsg, "get max LUN\n");
+                       *(u8 *) req->buf = fsg->nluns - 1;
+                       value = 1;
+                       break;
+               }
+       }
+
+       /* Handle CBI class-specific requests */
+       else {
+               switch (ctrl->bRequest) {
+
+               case USB_CBI_ADSC_REQUEST:
+                       if (ctrl->bRequestType != (USB_DIR_OUT |
+                                       USB_TYPE_CLASS | USB_RECIP_INTERFACE))
+                               break;
+                       if (w_index != 0 || w_value != 0) {
+                               value = -EDOM;
+                               break;
+                       }
+                       if (w_length > MAX_COMMAND_SIZE) {
+                               value = -EOVERFLOW;
+                               break;
+                       }
+                       value = w_length;
+                       fsg->ep0req->context = received_cbi_adsc;
+                       break;
+               }
+       }
+
+       if (value == -EOPNOTSUPP)
+               VDBG(fsg,
+                       "unknown class-specific control req "
+                       "%02x.%02x v%04x i%04x l%u\n",
+                       ctrl->bRequestType, ctrl->bRequest,
+                       le16_to_cpu(ctrl->wValue), w_index, w_length);
+       return value;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Ep0 standard request handlers.  These always run in_irq. */
+
+static int standard_setup_req(struct fsg_dev *fsg,
+               const struct usb_ctrlrequest *ctrl)
+{
+       struct usb_request      *req = fsg->ep0req;
+       int                     value = -EOPNOTSUPP;
+       u16                     w_index = le16_to_cpu(ctrl->wIndex);
+       u16                     w_value = le16_to_cpu(ctrl->wValue);
+
+       /* Usually this just stores reply data in the pre-allocated ep0 buffer,
+        * but config change events will also reconfigure hardware. */
+       switch (ctrl->bRequest) {
+
+       case USB_REQ_GET_DESCRIPTOR:
+               if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
+                               USB_RECIP_DEVICE))
+                       break;
+               switch (w_value >> 8) {
+
+               case USB_DT_DEVICE:
+                       VDBG(fsg, "get device descriptor\n");
+                       device_desc.bMaxPacketSize0 = fsg->ep0->maxpacket;
+                       value = sizeof device_desc;
+                       memcpy(req->buf, &device_desc, value);
+                       break;
+               case USB_DT_DEVICE_QUALIFIER:
+                       VDBG(fsg, "get device qualifier\n");
+                       if (!gadget_is_dualspeed(fsg->gadget) ||
+                                       fsg->gadget->speed == USB_SPEED_SUPER)
+                               break;
+                       /*
+                        * Assume ep0 uses the same maxpacket value for both
+                        * speeds
+                        */
+                       dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
+                       value = sizeof dev_qualifier;
+                       memcpy(req->buf, &dev_qualifier, value);
+                       break;
+
+               case USB_DT_OTHER_SPEED_CONFIG:
+                       VDBG(fsg, "get other-speed config descriptor\n");
+                       if (!gadget_is_dualspeed(fsg->gadget) ||
+                                       fsg->gadget->speed == USB_SPEED_SUPER)
+                               break;
+                       goto get_config;
+               case USB_DT_CONFIG:
+                       VDBG(fsg, "get configuration descriptor\n");
+get_config:
+                       value = populate_config_buf(fsg->gadget,
+                                       req->buf,
+                                       w_value >> 8,
+                                       w_value & 0xff);
+                       break;
+
+               case USB_DT_STRING:
+                       VDBG(fsg, "get string descriptor\n");
+
+                       /* wIndex == language code */
+                       value = usb_gadget_get_string(&fsg_stringtab,
+                                       w_value & 0xff, req->buf);
+                       break;
+
+               case USB_DT_BOS:
+                       VDBG(fsg, "get bos descriptor\n");
+
+                       if (gadget_is_superspeed(fsg->gadget))
+                               value = populate_bos(fsg, req->buf);
+                       break;
+               }
+
+               break;
+
+       /* One config, two speeds */
+       case USB_REQ_SET_CONFIGURATION:
+               if (ctrl->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
+                               USB_RECIP_DEVICE))
+                       break;
+               VDBG(fsg, "set configuration\n");
+               if (w_value == CONFIG_VALUE || w_value == 0) {
+                       fsg->new_config = w_value;
+
+                       /* Raise an exception to wipe out previous transaction
+                        * state (queued bufs, etc) and set the new config. */
+                       raise_exception(fsg, FSG_STATE_CONFIG_CHANGE);
+                       value = DELAYED_STATUS;
+               }
+               break;
+       case USB_REQ_GET_CONFIGURATION:
+               if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
+                               USB_RECIP_DEVICE))
+                       break;
+               VDBG(fsg, "get configuration\n");
+               *(u8 *) req->buf = fsg->config;
+               value = 1;
+               break;
+
+       case USB_REQ_SET_INTERFACE:
+               if (ctrl->bRequestType != (USB_DIR_OUT| USB_TYPE_STANDARD |
+                               USB_RECIP_INTERFACE))
+                       break;
+               if (fsg->config && w_index == 0) {
+
+                       /* Raise an exception to wipe out previous transaction
+                        * state (queued bufs, etc) and install the new
+                        * interface altsetting. */
+                       raise_exception(fsg, FSG_STATE_INTERFACE_CHANGE);
+                       value = DELAYED_STATUS;
+               }
+               break;
+       case USB_REQ_GET_INTERFACE:
+               if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
+                               USB_RECIP_INTERFACE))
+                       break;
+               if (!fsg->config)
+                       break;
+               if (w_index != 0) {
+                       value = -EDOM;
+                       break;
+               }
+               VDBG(fsg, "get interface\n");
+               *(u8 *) req->buf = 0;
+               value = 1;
+               break;
+
+       default:
+               VDBG(fsg,
+                       "unknown control req %02x.%02x v%04x i%04x l%u\n",
+                       ctrl->bRequestType, ctrl->bRequest,
+                       w_value, w_index, le16_to_cpu(ctrl->wLength));
+       }
+
+       return value;
+}
+
+
+static int fsg_setup(struct usb_gadget *gadget,
+               const struct usb_ctrlrequest *ctrl)
+{
+       struct fsg_dev          *fsg = get_gadget_data(gadget);
+       int                     rc;
+       int                     w_length = le16_to_cpu(ctrl->wLength);
+
+       ++fsg->ep0_req_tag;             // Record arrival of a new request
+       fsg->ep0req->context = NULL;
+       fsg->ep0req->length = 0;
+       dump_msg(fsg, "ep0-setup", (u8 *) ctrl, sizeof(*ctrl));
+
+       if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS)
+               rc = class_setup_req(fsg, ctrl);
+       else
+               rc = standard_setup_req(fsg, ctrl);
+
+       /* Respond with data/status or defer until later? */
+       if (rc >= 0 && rc != DELAYED_STATUS) {
+               rc = min(rc, w_length);
+               fsg->ep0req->length = rc;
+               fsg->ep0req->zero = rc < w_length;
+               fsg->ep0req_name = (ctrl->bRequestType & USB_DIR_IN ?
+                               "ep0-in" : "ep0-out");
+               rc = ep0_queue(fsg);
+       }
+
+       /* Device either stalls (rc < 0) or reports success */
+       return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* All the following routines run in process context */
+
+
+/* Use this for bulk or interrupt transfers, not ep0 */
+static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep,
+               struct usb_request *req, int *pbusy,
+               enum fsg_buffer_state *state)
+{
+       int     rc;
+
+       if (ep == fsg->bulk_in)
+               dump_msg(fsg, "bulk-in", req->buf, req->length);
+       else if (ep == fsg->intr_in)
+               dump_msg(fsg, "intr-in", req->buf, req->length);
+
+       spin_lock_irq(&fsg->lock);
+       *pbusy = 1;
+       *state = BUF_STATE_BUSY;
+       spin_unlock_irq(&fsg->lock);
+       rc = usb_ep_queue(ep, req, GFP_KERNEL);
+       if (rc != 0) {
+               *pbusy = 0;
+               *state = BUF_STATE_EMPTY;
+
+               /* We can't do much more than wait for a reset */
+
+               /* Note: currently the net2280 driver fails zero-length
+                * submissions if DMA is enabled. */
+               if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP &&
+                                               req->length == 0))
+                       WARNING(fsg, "error in submission: %s --> %d\n",
+                                       ep->name, rc);
+       }
+}
+
+
+static int sleep_thread(struct fsg_dev *fsg)
+{
+       int     rc = 0;
+
+       /* Wait until a signal arrives or we are woken up */
+       for (;;) {
+               try_to_freeze();
+               set_current_state(TASK_INTERRUPTIBLE);
+               if (signal_pending(current)) {
+                       rc = -EINTR;
+                       break;
+               }
+               if (fsg->thread_wakeup_needed)
+                       break;
+               schedule();
+       }
+       __set_current_state(TASK_RUNNING);
+       fsg->thread_wakeup_needed = 0;
+       return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_read(struct fsg_dev *fsg)
+{
+       struct fsg_lun          *curlun = fsg->curlun;
+       u32                     lba;
+       struct fsg_buffhd       *bh;
+       int                     rc;
+       u32                     amount_left;
+       loff_t                  file_offset, file_offset_tmp;
+       unsigned int            amount;
+       ssize_t                 nread;
+
+       /* Get the starting Logical Block Address and check that it's
+        * not too big */
+       if (fsg->cmnd[0] == READ_6)
+               lba = get_unaligned_be24(&fsg->cmnd[1]);
+       else {
+               lba = get_unaligned_be32(&fsg->cmnd[2]);
+
+               /* We allow DPO (Disable Page Out = don't save data in the
+                * cache) and FUA (Force Unit Access = don't read from the
+                * cache), but we don't implement them. */
+               if ((fsg->cmnd[1] & ~0x18) != 0) {
+                       curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+                       return -EINVAL;
+               }
+       }
+       if (lba >= curlun->num_sectors) {
+               curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+               return -EINVAL;
+       }
+       file_offset = ((loff_t) lba) << curlun->blkbits;
+
+       /* Carry out the file reads */
+       amount_left = fsg->data_size_from_cmnd;
+       if (unlikely(amount_left == 0))
+               return -EIO;            // No default reply
+
+       for (;;) {
+
+               /* Figure out how much we need to read:
+                * Try to read the remaining amount.
+                * But don't read more than the buffer size.
+                * And don't try to read past the end of the file.
+                */
+               amount = min((unsigned int) amount_left, mod_data.buflen);
+               amount = min((loff_t) amount,
+                               curlun->file_length - file_offset);
+
+               /* Wait for the next buffer to become available */
+               bh = fsg->next_buffhd_to_fill;
+               while (bh->state != BUF_STATE_EMPTY) {
+                       rc = sleep_thread(fsg);
+                       if (rc)
+                               return rc;
+               }
+
+               /* If we were asked to read past the end of file,
+                * end with an empty buffer. */
+               if (amount == 0) {
+                       curlun->sense_data =
+                                       SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+                       curlun->sense_data_info = file_offset >> curlun->blkbits;
+                       curlun->info_valid = 1;
+                       bh->inreq->length = 0;
+                       bh->state = BUF_STATE_FULL;
+                       break;
+               }
+
+               /* Perform the read */
+               file_offset_tmp = file_offset;
+               nread = vfs_read(curlun->filp,
+                               (char __user *) bh->buf,
+                               amount, &file_offset_tmp);
+               VLDBG(curlun, "file read %u @ %llu -> %d\n", amount,
+                               (unsigned long long) file_offset,
+                               (int) nread);
+               if (signal_pending(current))
+                       return -EINTR;
+
+               if (nread < 0) {
+                       LDBG(curlun, "error in file read: %d\n",
+                                       (int) nread);
+                       nread = 0;
+               } else if (nread < amount) {
+                       LDBG(curlun, "partial file read: %d/%u\n",
+                                       (int) nread, amount);
+                       nread = round_down(nread, curlun->blksize);
+               }
+               file_offset  += nread;
+               amount_left  -= nread;
+               fsg->residue -= nread;
+
+               /* Except at the end of the transfer, nread will be
+                * equal to the buffer size, which is divisible by the
+                * bulk-in maxpacket size.
+                */
+               bh->inreq->length = nread;
+               bh->state = BUF_STATE_FULL;
+
+               /* If an error occurred, report it and its position */
+               if (nread < amount) {
+                       curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
+                       curlun->sense_data_info = file_offset >> curlun->blkbits;
+                       curlun->info_valid = 1;
+                       break;
+               }
+
+               if (amount_left == 0)
+                       break;          // No more left to read
+
+               /* Send this buffer and go read some more */
+               bh->inreq->zero = 0;
+               start_transfer(fsg, fsg->bulk_in, bh->inreq,
+                               &bh->inreq_busy, &bh->state);
+               fsg->next_buffhd_to_fill = bh->next;
+       }
+
+       return -EIO;            // No default reply
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_write(struct fsg_dev *fsg)
+{
+       struct fsg_lun          *curlun = fsg->curlun;
+       u32                     lba;
+       struct fsg_buffhd       *bh;
+       int                     get_some_more;
+       u32                     amount_left_to_req, amount_left_to_write;
+       loff_t                  usb_offset, file_offset, file_offset_tmp;
+       unsigned int            amount;
+       ssize_t                 nwritten;
+       int                     rc;
+
+       if (curlun->ro) {
+               curlun->sense_data = SS_WRITE_PROTECTED;
+               return -EINVAL;
+       }
+       spin_lock(&curlun->filp->f_lock);
+       curlun->filp->f_flags &= ~O_SYNC;       // Default is not to wait
+       spin_unlock(&curlun->filp->f_lock);
+
+       /* Get the starting Logical Block Address and check that it's
+        * not too big */
+       if (fsg->cmnd[0] == WRITE_6)
+               lba = get_unaligned_be24(&fsg->cmnd[1]);
+       else {
+               lba = get_unaligned_be32(&fsg->cmnd[2]);
+
+               /* We allow DPO (Disable Page Out = don't save data in the
+                * cache) and FUA (Force Unit Access = write directly to the
+                * medium).  We don't implement DPO; we implement FUA by
+                * performing synchronous output. */
+               if ((fsg->cmnd[1] & ~0x18) != 0) {
+                       curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+                       return -EINVAL;
+               }
+               /* FUA */
+               if (!curlun->nofua && (fsg->cmnd[1] & 0x08)) {
+                       spin_lock(&curlun->filp->f_lock);
+                       curlun->filp->f_flags |= O_DSYNC;
+                       spin_unlock(&curlun->filp->f_lock);
+               }
+       }
+       if (lba >= curlun->num_sectors) {
+               curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+               return -EINVAL;
+       }
+
+       /* Carry out the file writes */
+       get_some_more = 1;
+       file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits;
+       amount_left_to_req = amount_left_to_write = fsg->data_size_from_cmnd;
+
+       while (amount_left_to_write > 0) {
+
+               /* Queue a request for more data from the host */
+               bh = fsg->next_buffhd_to_fill;
+               if (bh->state == BUF_STATE_EMPTY && get_some_more) {
+
+                       /* Figure out how much we want to get:
+                        * Try to get the remaining amount,
+                        * but not more than the buffer size.
+                        */
+                       amount = min(amount_left_to_req, mod_data.buflen);
+
+                       /* Beyond the end of the backing file? */
+                       if (usb_offset >= curlun->file_length) {
+                               get_some_more = 0;
+                               curlun->sense_data =
+                                       SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+                               curlun->sense_data_info = usb_offset >> curlun->blkbits;
+                               curlun->info_valid = 1;
+                               continue;
+                       }
+
+                       /* Get the next buffer */
+                       usb_offset += amount;
+                       fsg->usb_amount_left -= amount;
+                       amount_left_to_req -= amount;
+                       if (amount_left_to_req == 0)
+                               get_some_more = 0;
+
+                       /* Except at the end of the transfer, amount will be
+                        * equal to the buffer size, which is divisible by
+                        * the bulk-out maxpacket size.
+                        */
+                       set_bulk_out_req_length(fsg, bh, amount);
+                       start_transfer(fsg, fsg->bulk_out, bh->outreq,
+                                       &bh->outreq_busy, &bh->state);
+                       fsg->next_buffhd_to_fill = bh->next;
+                       continue;
+               }
+
+               /* Write the received data to the backing file */
+               bh = fsg->next_buffhd_to_drain;
+               if (bh->state == BUF_STATE_EMPTY && !get_some_more)
+                       break;                  // We stopped early
+               if (bh->state == BUF_STATE_FULL) {
+                       smp_rmb();
+                       fsg->next_buffhd_to_drain = bh->next;
+                       bh->state = BUF_STATE_EMPTY;
+
+                       /* Did something go wrong with the transfer? */
+                       if (bh->outreq->status != 0) {
+                               curlun->sense_data = SS_COMMUNICATION_FAILURE;
+                               curlun->sense_data_info = file_offset >> curlun->blkbits;
+                               curlun->info_valid = 1;
+                               break;
+                       }
+
+                       amount = bh->outreq->actual;
+                       if (curlun->file_length - file_offset < amount) {
+                               LERROR(curlun,
+       "write %u @ %llu beyond end %llu\n",
+       amount, (unsigned long long) file_offset,
+       (unsigned long long) curlun->file_length);
+                               amount = curlun->file_length - file_offset;
+                       }
+
+                       /* Don't accept excess data.  The spec doesn't say
+                        * what to do in this case.  We'll ignore the error.
+                        */
+                       amount = min(amount, bh->bulk_out_intended_length);
+
+                       /* Don't write a partial block */
+                       amount = round_down(amount, curlun->blksize);
+                       if (amount == 0)
+                               goto empty_write;
+
+                       /* Perform the write */
+                       file_offset_tmp = file_offset;
+                       nwritten = vfs_write(curlun->filp,
+                                       (char __user *) bh->buf,
+                                       amount, &file_offset_tmp);
+                       VLDBG(curlun, "file write %u @ %llu -> %d\n", amount,
+                                       (unsigned long long) file_offset,
+                                       (int) nwritten);
+                       if (signal_pending(current))
+                               return -EINTR;          // Interrupted!
+
+                       if (nwritten < 0) {
+                               LDBG(curlun, "error in file write: %d\n",
+                                               (int) nwritten);
+                               nwritten = 0;
+                       } else if (nwritten < amount) {
+                               LDBG(curlun, "partial file write: %d/%u\n",
+                                               (int) nwritten, amount);
+                               nwritten = round_down(nwritten, curlun->blksize);
+                       }
+                       file_offset += nwritten;
+                       amount_left_to_write -= nwritten;
+                       fsg->residue -= nwritten;
+
+                       /* If an error occurred, report it and its position */
+                       if (nwritten < amount) {
+                               curlun->sense_data = SS_WRITE_ERROR;
+                               curlun->sense_data_info = file_offset >> curlun->blkbits;
+                               curlun->info_valid = 1;
+                               break;
+                       }
+
+ empty_write:
+                       /* Did the host decide to stop early? */
+                       if (bh->outreq->actual < bh->bulk_out_intended_length) {
+                               fsg->short_packet_received = 1;
+                               break;
+                       }
+                       continue;
+               }
+
+               /* Wait for something to happen */
+               rc = sleep_thread(fsg);
+               if (rc)
+                       return rc;
+       }
+
+       return -EIO;            // No default reply
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_synchronize_cache(struct fsg_dev *fsg)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       int             rc;
+
+       /* We ignore the requested LBA and write out all file's
+        * dirty data buffers. */
+       rc = fsg_lun_fsync_sub(curlun);
+       if (rc)
+               curlun->sense_data = SS_WRITE_ERROR;
+       return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void invalidate_sub(struct fsg_lun *curlun)
+{
+       struct file     *filp = curlun->filp;
+       struct inode    *inode = filp->f_path.dentry->d_inode;
+       unsigned long   rc;
+
+       rc = invalidate_mapping_pages(inode->i_mapping, 0, -1);
+       VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc);
+}
+
+static int do_verify(struct fsg_dev *fsg)
+{
+       struct fsg_lun          *curlun = fsg->curlun;
+       u32                     lba;
+       u32                     verification_length;
+       struct fsg_buffhd       *bh = fsg->next_buffhd_to_fill;
+       loff_t                  file_offset, file_offset_tmp;
+       u32                     amount_left;
+       unsigned int            amount;
+       ssize_t                 nread;
+
+       /* Get the starting Logical Block Address and check that it's
+        * not too big */
+       lba = get_unaligned_be32(&fsg->cmnd[2]);
+       if (lba >= curlun->num_sectors) {
+               curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+               return -EINVAL;
+       }
+
+       /* We allow DPO (Disable Page Out = don't save data in the
+        * cache) but we don't implement it. */
+       if ((fsg->cmnd[1] & ~0x10) != 0) {
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+
+       verification_length = get_unaligned_be16(&fsg->cmnd[7]);
+       if (unlikely(verification_length == 0))
+               return -EIO;            // No default reply
+
+       /* Prepare to carry out the file verify */
+       amount_left = verification_length << curlun->blkbits;
+       file_offset = ((loff_t) lba) << curlun->blkbits;
+
+       /* Write out all the dirty buffers before invalidating them */
+       fsg_lun_fsync_sub(curlun);
+       if (signal_pending(current))
+               return -EINTR;
+
+       invalidate_sub(curlun);
+       if (signal_pending(current))
+               return -EINTR;
+
+       /* Just try to read the requested blocks */
+       while (amount_left > 0) {
+
+               /* Figure out how much we need to read:
+                * Try to read the remaining amount, but not more than
+                * the buffer size.
+                * And don't try to read past the end of the file.
+                */
+               amount = min((unsigned int) amount_left, mod_data.buflen);
+               amount = min((loff_t) amount,
+                               curlun->file_length - file_offset);
+               if (amount == 0) {
+                       curlun->sense_data =
+                                       SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+                       curlun->sense_data_info = file_offset >> curlun->blkbits;
+                       curlun->info_valid = 1;
+                       break;
+               }
+
+               /* Perform the read */
+               file_offset_tmp = file_offset;
+               nread = vfs_read(curlun->filp,
+                               (char __user *) bh->buf,
+                               amount, &file_offset_tmp);
+               VLDBG(curlun, "file read %u @ %llu -> %d\n", amount,
+                               (unsigned long long) file_offset,
+                               (int) nread);
+               if (signal_pending(current))
+                       return -EINTR;
+
+               if (nread < 0) {
+                       LDBG(curlun, "error in file verify: %d\n",
+                                       (int) nread);
+                       nread = 0;
+               } else if (nread < amount) {
+                       LDBG(curlun, "partial file verify: %d/%u\n",
+                                       (int) nread, amount);
+                       nread = round_down(nread, curlun->blksize);
+               }
+               if (nread == 0) {
+                       curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
+                       curlun->sense_data_info = file_offset >> curlun->blkbits;
+                       curlun->info_valid = 1;
+                       break;
+               }
+               file_offset += nread;
+               amount_left -= nread;
+       }
+       return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       u8      *buf = (u8 *) bh->buf;
+
+       static char vendor_id[] = "Linux   ";
+       static char product_disk_id[] = "File-Stor Gadget";
+       static char product_cdrom_id[] = "File-CD Gadget  ";
+
+       if (!fsg->curlun) {             // Unsupported LUNs are okay
+               fsg->bad_lun_okay = 1;
+               memset(buf, 0, 36);
+               buf[0] = 0x7f;          // Unsupported, no device-type
+               buf[4] = 31;            // Additional length
+               return 36;
+       }
+
+       memset(buf, 0, 8);
+       buf[0] = (mod_data.cdrom ? TYPE_ROM : TYPE_DISK);
+       if (mod_data.removable)
+               buf[1] = 0x80;
+       buf[2] = 2;             // ANSI SCSI level 2
+       buf[3] = 2;             // SCSI-2 INQUIRY data format
+       buf[4] = 31;            // Additional length
+                               // No special options
+       sprintf(buf + 8, "%-8s%-16s%04x", vendor_id,
+                       (mod_data.cdrom ? product_cdrom_id :
+                               product_disk_id),
+                       mod_data.release);
+       return 36;
+}
+
+
+static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       u8              *buf = (u8 *) bh->buf;
+       u32             sd, sdinfo;
+       int             valid;
+
+       /*
+        * From the SCSI-2 spec., section 7.9 (Unit attention condition):
+        *
+        * If a REQUEST SENSE command is received from an initiator
+        * with a pending unit attention condition (before the target
+        * generates the contingent allegiance condition), then the
+        * target shall either:
+        *   a) report any pending sense data and preserve the unit
+        *      attention condition on the logical unit, or,
+        *   b) report the unit attention condition, may discard any
+        *      pending sense data, and clear the unit attention
+        *      condition on the logical unit for that initiator.
+        *
+        * FSG normally uses option a); enable this code to use option b).
+        */
+#if 0
+       if (curlun && curlun->unit_attention_data != SS_NO_SENSE) {
+               curlun->sense_data = curlun->unit_attention_data;
+               curlun->unit_attention_data = SS_NO_SENSE;
+       }
+#endif
+
+       if (!curlun) {          // Unsupported LUNs are okay
+               fsg->bad_lun_okay = 1;
+               sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
+               sdinfo = 0;
+               valid = 0;
+       } else {
+               sd = curlun->sense_data;
+               sdinfo = curlun->sense_data_info;
+               valid = curlun->info_valid << 7;
+               curlun->sense_data = SS_NO_SENSE;
+               curlun->sense_data_info = 0;
+               curlun->info_valid = 0;
+       }
+
+       memset(buf, 0, 18);
+       buf[0] = valid | 0x70;                  // Valid, current error
+       buf[2] = SK(sd);
+       put_unaligned_be32(sdinfo, &buf[3]);    /* Sense information */
+       buf[7] = 18 - 8;                        // Additional sense length
+       buf[12] = ASC(sd);
+       buf[13] = ASCQ(sd);
+       return 18;
+}
+
+
+static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       u32             lba = get_unaligned_be32(&fsg->cmnd[2]);
+       int             pmi = fsg->cmnd[8];
+       u8              *buf = (u8 *) bh->buf;
+
+       /* Check the PMI and LBA fields */
+       if (pmi > 1 || (pmi == 0 && lba != 0)) {
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+
+       put_unaligned_be32(curlun->num_sectors - 1, &buf[0]);
+                                               /* Max logical block */
+       put_unaligned_be32(curlun->blksize, &buf[4]);   /* Block length */
+       return 8;
+}
+
+
+static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       int             msf = fsg->cmnd[1] & 0x02;
+       u32             lba = get_unaligned_be32(&fsg->cmnd[2]);
+       u8              *buf = (u8 *) bh->buf;
+
+       if ((fsg->cmnd[1] & ~0x02) != 0) {              /* Mask away MSF */
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+       if (lba >= curlun->num_sectors) {
+               curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+               return -EINVAL;
+       }
+
+       memset(buf, 0, 8);
+       buf[0] = 0x01;          /* 2048 bytes of user data, rest is EC */
+       store_cdrom_address(&buf[4], msf, lba);
+       return 8;
+}
+
+
+static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       int             msf = fsg->cmnd[1] & 0x02;
+       int             start_track = fsg->cmnd[6];
+       u8              *buf = (u8 *) bh->buf;
+
+       if ((fsg->cmnd[1] & ~0x02) != 0 ||              /* Mask away MSF */
+                       start_track > 1) {
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+
+       memset(buf, 0, 20);
+       buf[1] = (20-2);                /* TOC data length */
+       buf[2] = 1;                     /* First track number */
+       buf[3] = 1;                     /* Last track number */
+       buf[5] = 0x16;                  /* Data track, copying allowed */
+       buf[6] = 0x01;                  /* Only track is number 1 */
+       store_cdrom_address(&buf[8], msf, 0);
+
+       buf[13] = 0x16;                 /* Lead-out track is data */
+       buf[14] = 0xAA;                 /* Lead-out track number */
+       store_cdrom_address(&buf[16], msf, curlun->num_sectors);
+       return 20;
+}
+
+
+static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       int             mscmnd = fsg->cmnd[0];
+       u8              *buf = (u8 *) bh->buf;
+       u8              *buf0 = buf;
+       int             pc, page_code;
+       int             changeable_values, all_pages;
+       int             valid_page = 0;
+       int             len, limit;
+
+       if ((fsg->cmnd[1] & ~0x08) != 0) {              // Mask away DBD
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+       pc = fsg->cmnd[2] >> 6;
+       page_code = fsg->cmnd[2] & 0x3f;
+       if (pc == 3) {
+               curlun->sense_data = SS_SAVING_PARAMETERS_NOT_SUPPORTED;
+               return -EINVAL;
+       }
+       changeable_values = (pc == 1);
+       all_pages = (page_code == 0x3f);
+
+       /* Write the mode parameter header.  Fixed values are: default
+        * medium type, no cache control (DPOFUA), and no block descriptors.
+        * The only variable value is the WriteProtect bit.  We will fill in
+        * the mode data length later. */
+       memset(buf, 0, 8);
+       if (mscmnd == MODE_SENSE) {
+               buf[2] = (curlun->ro ? 0x80 : 0x00);            // WP, DPOFUA
+               buf += 4;
+               limit = 255;
+       } else {                        // MODE_SENSE_10
+               buf[3] = (curlun->ro ? 0x80 : 0x00);            // WP, DPOFUA
+               buf += 8;
+               limit = 65535;          // Should really be mod_data.buflen
+       }
+
+       /* No block descriptors */
+
+       /* The mode pages, in numerical order.  The only page we support
+        * is the Caching page. */
+       if (page_code == 0x08 || all_pages) {
+               valid_page = 1;
+               buf[0] = 0x08;          // Page code
+               buf[1] = 10;            // Page length
+               memset(buf+2, 0, 10);   // None of the fields are changeable
+
+               if (!changeable_values) {
+                       buf[2] = 0x04;  // Write cache enable,
+                                       // Read cache not disabled
+                                       // No cache retention priorities
+                       put_unaligned_be16(0xffff, &buf[4]);
+                                       /* Don't disable prefetch */
+                                       /* Minimum prefetch = 0 */
+                       put_unaligned_be16(0xffff, &buf[8]);
+                                       /* Maximum prefetch */
+                       put_unaligned_be16(0xffff, &buf[10]);
+                                       /* Maximum prefetch ceiling */
+               }
+               buf += 12;
+       }
+
+       /* Check that a valid page was requested and the mode data length
+        * isn't too long. */
+       len = buf - buf0;
+       if (!valid_page || len > limit) {
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+
+       /*  Store the mode data length */
+       if (mscmnd == MODE_SENSE)
+               buf0[0] = len - 1;
+       else
+               put_unaligned_be16(len - 2, buf0);
+       return len;
+}
+
+
+static int do_start_stop(struct fsg_dev *fsg)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       int             loej, start;
+
+       if (!mod_data.removable) {
+               curlun->sense_data = SS_INVALID_COMMAND;
+               return -EINVAL;
+       }
+
+       // int immed = fsg->cmnd[1] & 0x01;
+       loej = fsg->cmnd[4] & 0x02;
+       start = fsg->cmnd[4] & 0x01;
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+       if ((fsg->cmnd[1] & ~0x01) != 0 ||              // Mask away Immed
+                       (fsg->cmnd[4] & ~0x03) != 0) {  // Mask LoEj, Start
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+
+       if (!start) {
+
+               /* Are we allowed to unload the media? */
+               if (curlun->prevent_medium_removal) {
+                       LDBG(curlun, "unload attempt prevented\n");
+                       curlun->sense_data = SS_MEDIUM_REMOVAL_PREVENTED;
+                       return -EINVAL;
+               }
+               if (loej) {             // Simulate an unload/eject
+                       up_read(&fsg->filesem);
+                       down_write(&fsg->filesem);
+                       fsg_lun_close(curlun);
+                       up_write(&fsg->filesem);
+                       down_read(&fsg->filesem);
+               }
+       } else {
+
+               /* Our emulation doesn't support mounting; the medium is
+                * available for use as soon as it is loaded. */
+               if (!fsg_lun_is_open(curlun)) {
+                       curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
+                       return -EINVAL;
+               }
+       }
+#endif
+       return 0;
+}
+
+
+static int do_prevent_allow(struct fsg_dev *fsg)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       int             prevent;
+
+       if (!mod_data.removable) {
+               curlun->sense_data = SS_INVALID_COMMAND;
+               return -EINVAL;
+       }
+
+       prevent = fsg->cmnd[4] & 0x01;
+       if ((fsg->cmnd[4] & ~0x01) != 0) {              // Mask away Prevent
+               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+               return -EINVAL;
+       }
+
+       if (curlun->prevent_medium_removal && !prevent)
+               fsg_lun_fsync_sub(curlun);
+       curlun->prevent_medium_removal = prevent;
+       return 0;
+}
+
+
+static int do_read_format_capacities(struct fsg_dev *fsg,
+                       struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+       u8              *buf = (u8 *) bh->buf;
+
+       buf[0] = buf[1] = buf[2] = 0;
+       buf[3] = 8;             // Only the Current/Maximum Capacity Descriptor
+       buf += 4;
+
+       put_unaligned_be32(curlun->num_sectors, &buf[0]);
+                                               /* Number of blocks */
+       put_unaligned_be32(curlun->blksize, &buf[4]);   /* Block length */
+       buf[4] = 0x02;                          /* Current capacity */
+       return 12;
+}
+
+
+static int do_mode_select(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct fsg_lun  *curlun = fsg->curlun;
+
+       /* We don't support MODE SELECT */
+       curlun->sense_data = SS_INVALID_COMMAND;
+       return -EINVAL;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int halt_bulk_in_endpoint(struct fsg_dev *fsg)
+{
+       int     rc;
+
+       rc = fsg_set_halt(fsg, fsg->bulk_in);
+       if (rc == -EAGAIN)
+               VDBG(fsg, "delayed bulk-in endpoint halt\n");
+       while (rc != 0) {
+               if (rc != -EAGAIN) {
+                       WARNING(fsg, "usb_ep_set_halt -> %d\n", rc);
+                       rc = 0;
+                       break;
+               }
+
+               /* Wait for a short time and then try again */
+               if (msleep_interruptible(100) != 0)
+                       return -EINTR;
+               rc = usb_ep_set_halt(fsg->bulk_in);
+       }
+       return rc;
+}
+
+static int wedge_bulk_in_endpoint(struct fsg_dev *fsg)
+{
+       int     rc;
+
+       DBG(fsg, "bulk-in set wedge\n");
+       rc = usb_ep_set_wedge(fsg->bulk_in);
+       if (rc == -EAGAIN)
+               VDBG(fsg, "delayed bulk-in endpoint wedge\n");
+       while (rc != 0) {
+               if (rc != -EAGAIN) {
+                       WARNING(fsg, "usb_ep_set_wedge -> %d\n", rc);
+                       rc = 0;
+                       break;
+               }
+
+               /* Wait for a short time and then try again */
+               if (msleep_interruptible(100) != 0)
+                       return -EINTR;
+               rc = usb_ep_set_wedge(fsg->bulk_in);
+       }
+       return rc;
+}
+
+static int throw_away_data(struct fsg_dev *fsg)
+{
+       struct fsg_buffhd       *bh;
+       u32                     amount;
+       int                     rc;
+
+       while ((bh = fsg->next_buffhd_to_drain)->state != BUF_STATE_EMPTY ||
+                       fsg->usb_amount_left > 0) {
+
+               /* Throw away the data in a filled buffer */
+               if (bh->state == BUF_STATE_FULL) {
+                       smp_rmb();
+                       bh->state = BUF_STATE_EMPTY;
+                       fsg->next_buffhd_to_drain = bh->next;
+
+                       /* A short packet or an error ends everything */
+                       if (bh->outreq->actual < bh->bulk_out_intended_length ||
+                                       bh->outreq->status != 0) {
+                               raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
+                               return -EINTR;
+                       }
+                       continue;
+               }
+
+               /* Try to submit another request if we need one */
+               bh = fsg->next_buffhd_to_fill;
+               if (bh->state == BUF_STATE_EMPTY && fsg->usb_amount_left > 0) {
+                       amount = min(fsg->usb_amount_left,
+                                       (u32) mod_data.buflen);
+
+                       /* Except at the end of the transfer, amount will be
+                        * equal to the buffer size, which is divisible by
+                        * the bulk-out maxpacket size.
+                        */
+                       set_bulk_out_req_length(fsg, bh, amount);
+                       start_transfer(fsg, fsg->bulk_out, bh->outreq,
+                                       &bh->outreq_busy, &bh->state);
+                       fsg->next_buffhd_to_fill = bh->next;
+                       fsg->usb_amount_left -= amount;
+                       continue;
+               }
+
+               /* Otherwise wait for something to happen */
+               rc = sleep_thread(fsg);
+               if (rc)
+                       return rc;
+       }
+       return 0;
+}
+
+
+static int finish_reply(struct fsg_dev *fsg)
+{
+       struct fsg_buffhd       *bh = fsg->next_buffhd_to_fill;
+       int                     rc = 0;
+
+       switch (fsg->data_dir) {
+       case DATA_DIR_NONE:
+               break;                  // Nothing to send
+
+       /* If we don't know whether the host wants to read or write,
+        * this must be CB or CBI with an unknown command.  We mustn't
+        * try to send or receive any data.  So stall both bulk pipes
+        * if we can and wait for a reset. */
+       case DATA_DIR_UNKNOWN:
+               if (mod_data.can_stall) {
+                       fsg_set_halt(fsg, fsg->bulk_out);
+                       rc = halt_bulk_in_endpoint(fsg);
+               }
+               break;
+
+       /* All but the last buffer of data must have already been sent */
+       case DATA_DIR_TO_HOST:
+               if (fsg->data_size == 0)
+                       ;               // Nothing to send
+
+               /* If there's no residue, simply send the last buffer */
+               else if (fsg->residue == 0) {
+                       bh->inreq->zero = 0;
+                       start_transfer(fsg, fsg->bulk_in, bh->inreq,
+                                       &bh->inreq_busy, &bh->state);
+                       fsg->next_buffhd_to_fill = bh->next;
+               }
+
+               /* There is a residue.  For CB and CBI, simply mark the end
+                * of the data with a short packet.  However, if we are
+                * allowed to stall, there was no data at all (residue ==
+                * data_size), and the command failed (invalid LUN or
+                * sense data is set), then halt the bulk-in endpoint
+                * instead. */
+               else if (!transport_is_bbb()) {
+                       if (mod_data.can_stall &&
+                                       fsg->residue == fsg->data_size &&
+       (!fsg->curlun || fsg->curlun->sense_data != SS_NO_SENSE)) {
+                               bh->state = BUF_STATE_EMPTY;
+                               rc = halt_bulk_in_endpoint(fsg);
+                       } else {
+                               bh->inreq->zero = 1;
+                               start_transfer(fsg, fsg->bulk_in, bh->inreq,
+                                               &bh->inreq_busy, &bh->state);
+                               fsg->next_buffhd_to_fill = bh->next;
+                       }
+               }
+
+               /*
+                * For Bulk-only, mark the end of the data with a short
+                * packet.  If we are allowed to stall, halt the bulk-in
+                * endpoint.  (Note: This violates the Bulk-Only Transport
+                * specification, which requires us to pad the data if we
+                * don't halt the endpoint.  Presumably nobody will mind.)
+                */
+               else {
+                       bh->inreq->zero = 1;
+                       start_transfer(fsg, fsg->bulk_in, bh->inreq,
+                                       &bh->inreq_busy, &bh->state);
+                       fsg->next_buffhd_to_fill = bh->next;
+                       if (mod_data.can_stall)
+                               rc = halt_bulk_in_endpoint(fsg);
+               }
+               break;
+
+       /* We have processed all we want from the data the host has sent.
+        * There may still be outstanding bulk-out requests. */
+       case DATA_DIR_FROM_HOST:
+               if (fsg->residue == 0)
+                       ;               // Nothing to receive
+
+               /* Did the host stop sending unexpectedly early? */
+               else if (fsg->short_packet_received) {
+                       raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
+                       rc = -EINTR;
+               }
+
+               /* We haven't processed all the incoming data.  Even though
+                * we may be allowed to stall, doing so would cause a race.
+                * The controller may already have ACK'ed all the remaining
+                * bulk-out packets, in which case the host wouldn't see a
+                * STALL.  Not realizing the endpoint was halted, it wouldn't
+                * clear the halt -- leading to problems later on. */
+#if 0
+               else if (mod_data.can_stall) {
+                       fsg_set_halt(fsg, fsg->bulk_out);
+                       raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
+                       rc = -EINTR;
+               }
+#endif
+
+               /* We can't stall.  Read in the excess data and throw it
+                * all away. */
+               else
+                       rc = throw_away_data(fsg);
+               break;
+       }
+       return rc;
+}
+
+
+static int send_status(struct fsg_dev *fsg)
+{
+       struct fsg_lun          *curlun = fsg->curlun;
+       struct fsg_buffhd       *bh;
+       int                     rc;
+       u8                      status = US_BULK_STAT_OK;
+       u32                     sd, sdinfo = 0;
+
+       /* Wait for the next buffer to become available */
+       bh = fsg->next_buffhd_to_fill;
+       while (bh->state != BUF_STATE_EMPTY) {
+               rc = sleep_thread(fsg);
+               if (rc)
+                       return rc;
+       }
+
+       if (curlun) {
+               sd = curlun->sense_data;
+               sdinfo = curlun->sense_data_info;
+       } else if (fsg->bad_lun_okay)
+               sd = SS_NO_SENSE;
+       else
+               sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
+
+       if (fsg->phase_error) {
+               DBG(fsg, "sending phase-error status\n");
+               status = US_BULK_STAT_PHASE;
+               sd = SS_INVALID_COMMAND;
+       } else if (sd != SS_NO_SENSE) {
+               DBG(fsg, "sending command-failure status\n");
+               status = US_BULK_STAT_FAIL;
+               VDBG(fsg, "  sense data: SK x%02x, ASC x%02x, ASCQ x%02x;"
+                               "  info x%x\n",
+                               SK(sd), ASC(sd), ASCQ(sd), sdinfo);
+       }
+
+       if (transport_is_bbb()) {
+               struct bulk_cs_wrap     *csw = bh->buf;
+
+               /* Store and send the Bulk-only CSW */
+               csw->Signature = cpu_to_le32(US_BULK_CS_SIGN);
+               csw->Tag = fsg->tag;
+               csw->Residue = cpu_to_le32(fsg->residue);
+               csw->Status = status;
+
+               bh->inreq->length = US_BULK_CS_WRAP_LEN;
+               bh->inreq->zero = 0;
+               start_transfer(fsg, fsg->bulk_in, bh->inreq,
+                               &bh->inreq_busy, &bh->state);
+
+       } else if (mod_data.transport_type == USB_PR_CB) {
+
+               /* Control-Bulk transport has no status phase! */
+               return 0;
+
+       } else {                        // USB_PR_CBI
+               struct interrupt_data   *buf = bh->buf;
+
+               /* Store and send the Interrupt data.  UFI sends the ASC
+                * and ASCQ bytes.  Everything else sends a Type (which
+                * is always 0) and the status Value. */
+               if (mod_data.protocol_type == USB_SC_UFI) {
+                       buf->bType = ASC(sd);
+                       buf->bValue = ASCQ(sd);
+               } else {
+                       buf->bType = 0;
+                       buf->bValue = status;
+               }
+               fsg->intreq->length = CBI_INTERRUPT_DATA_LEN;
+
+               fsg->intr_buffhd = bh;          // Point to the right buffhd
+               fsg->intreq->buf = bh->inreq->buf;
+               fsg->intreq->context = bh;
+               start_transfer(fsg, fsg->intr_in, fsg->intreq,
+                               &fsg->intreq_busy, &bh->state);
+       }
+
+       fsg->next_buffhd_to_fill = bh->next;
+       return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Check whether the command is properly formed and whether its data size
+ * and direction agree with the values we already have. */
+static int check_command(struct fsg_dev *fsg, int cmnd_size,
+               enum data_direction data_dir, unsigned int mask,
+               int needs_medium, const char *name)
+{
+       int                     i;
+       int                     lun = fsg->cmnd[1] >> 5;
+       static const char       dirletter[4] = {'u', 'o', 'i', 'n'};
+       char                    hdlen[20];
+       struct fsg_lun          *curlun;
+
+       /* Adjust the expected cmnd_size for protocol encapsulation padding.
+        * Transparent SCSI doesn't pad. */
+       if (protocol_is_scsi())
+               ;
+
+       /* There's some disagreement as to whether RBC pads commands or not.
+        * We'll play it safe and accept either form. */
+       else if (mod_data.protocol_type == USB_SC_RBC) {
+               if (fsg->cmnd_size == 12)
+                       cmnd_size = 12;
+
+       /* All the other protocols pad to 12 bytes */
+       } else
+               cmnd_size = 12;
+
+       hdlen[0] = 0;
+       if (fsg->data_dir != DATA_DIR_UNKNOWN)
+               sprintf(hdlen, ", H%c=%u", dirletter[(int) fsg->data_dir],
+                               fsg->data_size);
+       VDBG(fsg, "SCSI command: %s;  Dc=%d, D%c=%u;  Hc=%d%s\n",
+                       name, cmnd_size, dirletter[(int) data_dir],
+                       fsg->data_size_from_cmnd, fsg->cmnd_size, hdlen);
+
+       /* We can't reply at all until we know the correct data direction
+        * and size. */
+       if (fsg->data_size_from_cmnd == 0)
+               data_dir = DATA_DIR_NONE;
+       if (fsg->data_dir == DATA_DIR_UNKNOWN) {        // CB or CBI
+               fsg->data_dir = data_dir;
+               fsg->data_size = fsg->data_size_from_cmnd;
+
+       } else {                                        // Bulk-only
+               if (fsg->data_size < fsg->data_size_from_cmnd) {
+
+                       /* Host data size < Device data size is a phase error.
+                        * Carry out the command, but only transfer as much
+                        * as we are allowed. */
+                       fsg->data_size_from_cmnd = fsg->data_size;
+                       fsg->phase_error = 1;
+               }
+       }
+       fsg->residue = fsg->usb_amount_left = fsg->data_size;
+
+       /* Conflicting data directions is a phase error */
+       if (fsg->data_dir != data_dir && fsg->data_size_from_cmnd > 0) {
+               fsg->phase_error = 1;
+               return -EINVAL;
+       }
+
+       /* Verify the length of the command itself */
+       if (cmnd_size != fsg->cmnd_size) {
+
+               /* Special case workaround: There are plenty of buggy SCSI
+                * implementations. Many have issues with cbw->Length
+                * field passing a wrong command size. For those cases we
+                * always try to work around the problem by using the length
+                * sent by the host side provided it is at least as large
+                * as the correct command length.
+                * Examples of such cases would be MS-Windows, which issues
+                * REQUEST SENSE with cbw->Length == 12 where it should
+                * be 6, and xbox360 issuing INQUIRY, TEST UNIT READY and
+                * REQUEST SENSE with cbw->Length == 10 where it should
+                * be 6 as well.
+                */
+               if (cmnd_size <= fsg->cmnd_size) {
+                       DBG(fsg, "%s is buggy! Expected length %d "
+                                       "but we got %d\n", name,
+                                       cmnd_size, fsg->cmnd_size);
+                       cmnd_size = fsg->cmnd_size;
+               } else {
+                       fsg->phase_error = 1;
+                       return -EINVAL;
+               }
+       }
+
+       /* Check that the LUN values are consistent */
+       if (transport_is_bbb()) {
+               if (fsg->lun != lun)
+                       DBG(fsg, "using LUN %d from CBW, "
+                                       "not LUN %d from CDB\n",
+                                       fsg->lun, lun);
+       }
+
+       /* Check the LUN */
+       curlun = fsg->curlun;
+       if (curlun) {
+               if (fsg->cmnd[0] != REQUEST_SENSE) {
+                       curlun->sense_data = SS_NO_SENSE;
+                       curlun->sense_data_info = 0;
+                       curlun->info_valid = 0;
+               }
+       } else {
+               fsg->bad_lun_okay = 0;
+
+               /* INQUIRY and REQUEST SENSE commands are explicitly allowed
+                * to use unsupported LUNs; all others may not. */
+               if (fsg->cmnd[0] != INQUIRY &&
+                               fsg->cmnd[0] != REQUEST_SENSE) {
+                       DBG(fsg, "unsupported LUN %d\n", fsg->lun);
+                       return -EINVAL;
+               }
+       }
+
+       /* If a unit attention condition exists, only INQUIRY and
+        * REQUEST SENSE commands are allowed; anything else must fail. */
+       if (curlun && curlun->unit_attention_data != SS_NO_SENSE &&
+                       fsg->cmnd[0] != INQUIRY &&
+                       fsg->cmnd[0] != REQUEST_SENSE) {
+               curlun->sense_data = curlun->unit_attention_data;
+               curlun->unit_attention_data = SS_NO_SENSE;
+               return -EINVAL;
+       }
+
+       /* Check that only command bytes listed in the mask are non-zero */
+       fsg->cmnd[1] &= 0x1f;                   // Mask away the LUN
+       for (i = 1; i < cmnd_size; ++i) {
+               if (fsg->cmnd[i] && !(mask & (1 << i))) {
+                       if (curlun)
+                               curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+                       return -EINVAL;
+               }
+       }
+
+       /* If the medium isn't mounted and the command needs to access
+        * it, return an error. */
+       if (curlun && !fsg_lun_is_open(curlun) && needs_medium) {
+               curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/* wrapper of check_command for data size in blocks handling */
+static int check_command_size_in_blocks(struct fsg_dev *fsg, int cmnd_size,
+               enum data_direction data_dir, unsigned int mask,
+               int needs_medium, const char *name)
+{
+       if (fsg->curlun)
+               fsg->data_size_from_cmnd <<= fsg->curlun->blkbits;
+       return check_command(fsg, cmnd_size, data_dir,
+                       mask, needs_medium, name);
+}
+
+static int do_scsi_command(struct fsg_dev *fsg)
+{
+       struct fsg_buffhd       *bh;
+       int                     rc;
+       int                     reply = -EINVAL;
+       int                     i;
+       static char             unknown[16];
+
+       dump_cdb(fsg);
+
+       /* Wait for the next buffer to become available for data or status */
+       bh = fsg->next_buffhd_to_drain = fsg->next_buffhd_to_fill;
+       while (bh->state != BUF_STATE_EMPTY) {
+               rc = sleep_thread(fsg);
+               if (rc)
+                       return rc;
+       }
+       fsg->phase_error = 0;
+       fsg->short_packet_received = 0;
+
+       down_read(&fsg->filesem);       // We're using the backing file
+       switch (fsg->cmnd[0]) {
+
+       case INQUIRY:
+               fsg->data_size_from_cmnd = fsg->cmnd[4];
+               if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
+                               (1<<4), 0,
+                               "INQUIRY")) == 0)
+                       reply = do_inquiry(fsg, bh);
+               break;
+
+       case MODE_SELECT:
+               fsg->data_size_from_cmnd = fsg->cmnd[4];
+               if ((reply = check_command(fsg, 6, DATA_DIR_FROM_HOST,
+                               (1<<1) | (1<<4), 0,
+                               "MODE SELECT(6)")) == 0)
+                       reply = do_mode_select(fsg, bh);
+               break;
+
+       case MODE_SELECT_10:
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST,
+                               (1<<1) | (3<<7), 0,
+                               "MODE SELECT(10)")) == 0)
+                       reply = do_mode_select(fsg, bh);
+               break;
+
+       case MODE_SENSE:
+               fsg->data_size_from_cmnd = fsg->cmnd[4];
+               if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
+                               (1<<1) | (1<<2) | (1<<4), 0,
+                               "MODE SENSE(6)")) == 0)
+                       reply = do_mode_sense(fsg, bh);
+               break;
+
+       case MODE_SENSE_10:
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+                               (1<<1) | (1<<2) | (3<<7), 0,
+                               "MODE SENSE(10)")) == 0)
+                       reply = do_mode_sense(fsg, bh);
+               break;
+
+       case ALLOW_MEDIUM_REMOVAL:
+               fsg->data_size_from_cmnd = 0;
+               if ((reply = check_command(fsg, 6, DATA_DIR_NONE,
+                               (1<<4), 0,
+                               "PREVENT-ALLOW MEDIUM REMOVAL")) == 0)
+                       reply = do_prevent_allow(fsg);
+               break;
+
+       case READ_6:
+               i = fsg->cmnd[4];
+               fsg->data_size_from_cmnd = (i == 0) ? 256 : i;
+               if ((reply = check_command_size_in_blocks(fsg, 6,
+                               DATA_DIR_TO_HOST,
+                               (7<<1) | (1<<4), 1,
+                               "READ(6)")) == 0)
+                       reply = do_read(fsg);
+               break;
+
+       case READ_10:
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command_size_in_blocks(fsg, 10,
+                               DATA_DIR_TO_HOST,
+                               (1<<1) | (0xf<<2) | (3<<7), 1,
+                               "READ(10)")) == 0)
+                       reply = do_read(fsg);
+               break;
+
+       case READ_12:
+               fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]);
+               if ((reply = check_command_size_in_blocks(fsg, 12,
+                               DATA_DIR_TO_HOST,
+                               (1<<1) | (0xf<<2) | (0xf<<6), 1,
+                               "READ(12)")) == 0)
+                       reply = do_read(fsg);
+               break;
+
+       case READ_CAPACITY:
+               fsg->data_size_from_cmnd = 8;
+               if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+                               (0xf<<2) | (1<<8), 1,
+                               "READ CAPACITY")) == 0)
+                       reply = do_read_capacity(fsg, bh);
+               break;
+
+       case READ_HEADER:
+               if (!mod_data.cdrom)
+                       goto unknown_cmnd;
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+                               (3<<7) | (0x1f<<1), 1,
+                               "READ HEADER")) == 0)
+                       reply = do_read_header(fsg, bh);
+               break;
+
+       case READ_TOC:
+               if (!mod_data.cdrom)
+                       goto unknown_cmnd;
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+                               (7<<6) | (1<<1), 1,
+                               "READ TOC")) == 0)
+                       reply = do_read_toc(fsg, bh);
+               break;
+
+       case READ_FORMAT_CAPACITIES:
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+                               (3<<7), 1,
+                               "READ FORMAT CAPACITIES")) == 0)
+                       reply = do_read_format_capacities(fsg, bh);
+               break;
+
+       case REQUEST_SENSE:
+               fsg->data_size_from_cmnd = fsg->cmnd[4];
+               if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
+                               (1<<4), 0,
+                               "REQUEST SENSE")) == 0)
+                       reply = do_request_sense(fsg, bh);
+               break;
+
+       case START_STOP:
+               fsg->data_size_from_cmnd = 0;
+               if ((reply = check_command(fsg, 6, DATA_DIR_NONE,
+                               (1<<1) | (1<<4), 0,
+                               "START-STOP UNIT")) == 0)
+                       reply = do_start_stop(fsg);
+               break;
+
+       case SYNCHRONIZE_CACHE:
+               fsg->data_size_from_cmnd = 0;
+               if ((reply = check_command(fsg, 10, DATA_DIR_NONE,
+                               (0xf<<2) | (3<<7), 1,
+                               "SYNCHRONIZE CACHE")) == 0)
+                       reply = do_synchronize_cache(fsg);
+               break;
+
+       case TEST_UNIT_READY:
+               fsg->data_size_from_cmnd = 0;
+               reply = check_command(fsg, 6, DATA_DIR_NONE,
+                               0, 1,
+                               "TEST UNIT READY");
+               break;
+
+       /* Although optional, this command is used by MS-Windows.  We
+        * support a minimal version: BytChk must be 0. */
+       case VERIFY:
+               fsg->data_size_from_cmnd = 0;
+               if ((reply = check_command(fsg, 10, DATA_DIR_NONE,
+                               (1<<1) | (0xf<<2) | (3<<7), 1,
+                               "VERIFY")) == 0)
+                       reply = do_verify(fsg);
+               break;
+
+       case WRITE_6:
+               i = fsg->cmnd[4];
+               fsg->data_size_from_cmnd = (i == 0) ? 256 : i;
+               if ((reply = check_command_size_in_blocks(fsg, 6,
+                               DATA_DIR_FROM_HOST,
+                               (7<<1) | (1<<4), 1,
+                               "WRITE(6)")) == 0)
+                       reply = do_write(fsg);
+               break;
+
+       case WRITE_10:
+               fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+               if ((reply = check_command_size_in_blocks(fsg, 10,
+                               DATA_DIR_FROM_HOST,
+                               (1<<1) | (0xf<<2) | (3<<7), 1,
+                               "WRITE(10)")) == 0)
+                       reply = do_write(fsg);
+               break;
+
+       case WRITE_12:
+               fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]);
+               if ((reply = check_command_size_in_blocks(fsg, 12,
+                               DATA_DIR_FROM_HOST,
+                               (1<<1) | (0xf<<2) | (0xf<<6), 1,
+                               "WRITE(12)")) == 0)
+                       reply = do_write(fsg);
+               break;
+
+       /* Some mandatory commands that we recognize but don't implement.
+        * They don't mean much in this setting.  It's left as an exercise
+        * for anyone interested to implement RESERVE and RELEASE in terms
+        * of Posix locks. */
+       case FORMAT_UNIT:
+       case RELEASE:
+       case RESERVE:
+       case SEND_DIAGNOSTIC:
+               // Fall through
+
+       default:
+ unknown_cmnd:
+               fsg->data_size_from_cmnd = 0;
+               sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]);
+               if ((reply = check_command(fsg, fsg->cmnd_size,
+                               DATA_DIR_UNKNOWN, ~0, 0, unknown)) == 0) {
+                       fsg->curlun->sense_data = SS_INVALID_COMMAND;
+                       reply = -EINVAL;
+               }
+               break;
+       }
+       up_read(&fsg->filesem);
+
+       if (reply == -EINTR || signal_pending(current))
+               return -EINTR;
+
+       /* Set up the single reply buffer for finish_reply() */
+       if (reply == -EINVAL)
+               reply = 0;              // Error reply length
+       if (reply >= 0 && fsg->data_dir == DATA_DIR_TO_HOST) {
+               reply = min((u32) reply, fsg->data_size_from_cmnd);
+               bh->inreq->length = reply;
+               bh->state = BUF_STATE_FULL;
+               fsg->residue -= reply;
+       }                               // Otherwise it's already set
+
+       return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+       struct usb_request              *req = bh->outreq;
+       struct bulk_cb_wrap     *cbw = req->buf;
+
+       /* Was this a real packet?  Should it be ignored? */
+       if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
+               return -EINVAL;
+
+       /* Is the CBW valid? */
+       if (req->actual != US_BULK_CB_WRAP_LEN ||
+                       cbw->Signature != cpu_to_le32(
+                               US_BULK_CB_SIGN)) {
+               DBG(fsg, "invalid CBW: len %u sig 0x%x\n",
+                               req->actual,
+                               le32_to_cpu(cbw->Signature));
+
+               /* The Bulk-only spec says we MUST stall the IN endpoint
+                * (6.6.1), so it's unavoidable.  It also says we must
+                * retain this state until the next reset, but there's
+                * no way to tell the controller driver it should ignore
+                * Clear-Feature(HALT) requests.
+                *
+                * We aren't required to halt the OUT endpoint; instead
+                * we can simply accept and discard any data received
+                * until the next reset. */
+               wedge_bulk_in_endpoint(fsg);
+               set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
+               return -EINVAL;
+       }
+
+       /* Is the CBW meaningful? */
+       if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN ||
+                       cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
+               DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
+                               "cmdlen %u\n",
+                               cbw->Lun, cbw->Flags, cbw->Length);
+
+               /* We can do anything we want here, so let's stall the
+                * bulk pipes if we are allowed to. */
+               if (mod_data.can_stall) {
+                       fsg_set_halt(fsg, fsg->bulk_out);
+                       halt_bulk_in_endpoint(fsg);
+               }
+               return -EINVAL;
+       }
+
+       /* Save the command for later */
+       fsg->cmnd_size = cbw->Length;
+       memcpy(fsg->cmnd, cbw->CDB, fsg->cmnd_size);
+       if (cbw->Flags & US_BULK_FLAG_IN)
+               fsg->data_dir = DATA_DIR_TO_HOST;
+       else
+               fsg->data_dir = DATA_DIR_FROM_HOST;
+       fsg->data_size = le32_to_cpu(cbw->DataTransferLength);
+       if (fsg->data_size == 0)
+               fsg->data_dir = DATA_DIR_NONE;
+       fsg->lun = cbw->Lun;
+       fsg->tag = cbw->Tag;
+       return 0;
+}
+
+
+static int get_next_command(struct fsg_dev *fsg)
+{
+       struct fsg_buffhd       *bh;
+       int                     rc = 0;
+
+       if (transport_is_bbb()) {
+
+               /* Wait for the next buffer to become available */
+               bh = fsg->next_buffhd_to_fill;
+               while (bh->state != BUF_STATE_EMPTY) {
+                       rc = sleep_thread(fsg);
+                       if (rc)
+                               return rc;
+               }
+
+               /* Queue a request to read a Bulk-only CBW */
+               set_bulk_out_req_length(fsg, bh, US_BULK_CB_WRAP_LEN);
+               start_transfer(fsg, fsg->bulk_out, bh->outreq,
+                               &bh->outreq_busy, &bh->state);
+
+               /* We will drain the buffer in software, which means we
+                * can reuse it for the next filling.  No need to advance
+                * next_buffhd_to_fill. */
+
+               /* Wait for the CBW to arrive */
+               while (bh->state != BUF_STATE_FULL) {
+                       rc = sleep_thread(fsg);
+                       if (rc)
+                               return rc;
+               }
+               smp_rmb();
+               rc = received_cbw(fsg, bh);
+               bh->state = BUF_STATE_EMPTY;
+
+       } else {                // USB_PR_CB or USB_PR_CBI
+
+               /* Wait for the next command to arrive */
+               while (fsg->cbbuf_cmnd_size == 0) {
+                       rc = sleep_thread(fsg);
+                       if (rc)
+                               return rc;
+               }
+
+               /* Is the previous status interrupt request still busy?
+                * The host is allowed to skip reading the status,
+                * so we must cancel it. */
+               if (fsg->intreq_busy)
+                       usb_ep_dequeue(fsg->intr_in, fsg->intreq);
+
+               /* Copy the command and mark the buffer empty */
+               fsg->data_dir = DATA_DIR_UNKNOWN;
+               spin_lock_irq(&fsg->lock);
+               fsg->cmnd_size = fsg->cbbuf_cmnd_size;
+               memcpy(fsg->cmnd, fsg->cbbuf_cmnd, fsg->cmnd_size);
+               fsg->cbbuf_cmnd_size = 0;
+               spin_unlock_irq(&fsg->lock);
+
+               /* Use LUN from the command */
+               fsg->lun = fsg->cmnd[1] >> 5;
+       }
+
+       /* Update current lun */
+       if (fsg->lun >= 0 && fsg->lun < fsg->nluns)
+               fsg->curlun = &fsg->luns[fsg->lun];
+       else
+               fsg->curlun = NULL;
+
+       return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int enable_endpoint(struct fsg_dev *fsg, struct usb_ep *ep,
+               const struct usb_endpoint_descriptor *d)
+{
+       int     rc;
+
+       ep->driver_data = fsg;
+       ep->desc = d;
+       rc = usb_ep_enable(ep);
+       if (rc)
+               ERROR(fsg, "can't enable %s, result %d\n", ep->name, rc);
+       return rc;
+}
+
+static int alloc_request(struct fsg_dev *fsg, struct usb_ep *ep,
+               struct usb_request **preq)
+{
+       *preq = usb_ep_alloc_request(ep, GFP_ATOMIC);
+       if (*preq)
+               return 0;
+       ERROR(fsg, "can't allocate request for %s\n", ep->name);
+       return -ENOMEM;
+}
+
+/*
+ * Reset interface setting and re-init endpoint state (toggle etc).
+ * Call with altsetting < 0 to disable the interface.  The only other
+ * available altsetting is 0, which enables the interface.
+ */
+static int do_set_interface(struct fsg_dev *fsg, int altsetting)
+{
+       int     rc = 0;
+       int     i;
+       const struct usb_endpoint_descriptor    *d;
+
+       if (fsg->running)
+               DBG(fsg, "reset interface\n");
+
+reset:
+       /* Deallocate the requests */
+       for (i = 0; i < fsg_num_buffers; ++i) {
+               struct fsg_buffhd *bh = &fsg->buffhds[i];
+
+               if (bh->inreq) {
+                       usb_ep_free_request(fsg->bulk_in, bh->inreq);
+                       bh->inreq = NULL;
+               }
+               if (bh->outreq) {
+                       usb_ep_free_request(fsg->bulk_out, bh->outreq);
+                       bh->outreq = NULL;
+               }
+       }
+       if (fsg->intreq) {
+               usb_ep_free_request(fsg->intr_in, fsg->intreq);
+               fsg->intreq = NULL;
+       }
+
+       /* Disable the endpoints */
+       if (fsg->bulk_in_enabled) {
+               usb_ep_disable(fsg->bulk_in);
+               fsg->bulk_in_enabled = 0;
+       }
+       if (fsg->bulk_out_enabled) {
+               usb_ep_disable(fsg->bulk_out);
+               fsg->bulk_out_enabled = 0;
+       }
+       if (fsg->intr_in_enabled) {
+               usb_ep_disable(fsg->intr_in);
+               fsg->intr_in_enabled = 0;
+       }
+
+       fsg->running = 0;
+       if (altsetting < 0 || rc != 0)
+               return rc;
+
+       DBG(fsg, "set interface %d\n", altsetting);
+
+       /* Enable the endpoints */
+       d = fsg_ep_desc(fsg->gadget,
+                       &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc,
+                       &fsg_ss_bulk_in_desc);
+       if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0)
+               goto reset;
+       fsg->bulk_in_enabled = 1;
+
+       d = fsg_ep_desc(fsg->gadget,
+                       &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc,
+                       &fsg_ss_bulk_out_desc);
+       if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0)
+               goto reset;
+       fsg->bulk_out_enabled = 1;
+       fsg->bulk_out_maxpacket = usb_endpoint_maxp(d);
+       clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
+
+       if (transport_is_cbi()) {
+               d = fsg_ep_desc(fsg->gadget,
+                               &fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc,
+                               &fsg_ss_intr_in_desc);
+               if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0)
+                       goto reset;
+               fsg->intr_in_enabled = 1;
+       }
+
+       /* Allocate the requests */
+       for (i = 0; i < fsg_num_buffers; ++i) {
+               struct fsg_buffhd       *bh = &fsg->buffhds[i];
+
+               if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0)
+                       goto reset;
+               if ((rc = alloc_request(fsg, fsg->bulk_out, &bh->outreq)) != 0)
+                       goto reset;
+               bh->inreq->buf = bh->outreq->buf = bh->buf;
+               bh->inreq->context = bh->outreq->context = bh;
+               bh->inreq->complete = bulk_in_complete;
+               bh->outreq->complete = bulk_out_complete;
+       }
+       if (transport_is_cbi()) {
+               if ((rc = alloc_request(fsg, fsg->intr_in, &fsg->intreq)) != 0)
+                       goto reset;
+               fsg->intreq->complete = intr_in_complete;
+       }
+
+       fsg->running = 1;
+       for (i = 0; i < fsg->nluns; ++i)
+               fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED;
+       return rc;
+}
+
+
+/*
+ * Change our operational configuration.  This code must agree with the code
+ * that returns config descriptors, and with interface altsetting code.
+ *
+ * It's also responsible for power management interactions.  Some
+ * configurations might not work with our current power sources.
+ * For now we just assume the gadget is always self-powered.
+ */
+static int do_set_config(struct fsg_dev *fsg, u8 new_config)
+{
+       int     rc = 0;
+
+       /* Disable the single interface */
+       if (fsg->config != 0) {
+               DBG(fsg, "reset config\n");
+               fsg->config = 0;
+               rc = do_set_interface(fsg, -1);
+       }
+
+       /* Enable the interface */
+       if (new_config != 0) {
+               fsg->config = new_config;
+               if ((rc = do_set_interface(fsg, 0)) != 0)
+                       fsg->config = 0;        // Reset on errors
+               else
+                       INFO(fsg, "%s config #%d\n",
+                            usb_speed_string(fsg->gadget->speed),
+                            fsg->config);
+       }
+       return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void handle_exception(struct fsg_dev *fsg)
+{
+       siginfo_t               info;
+       int                     sig;
+       int                     i;
+       int                     num_active;
+       struct fsg_buffhd       *bh;
+       enum fsg_state          old_state;
+       u8                      new_config;
+       struct fsg_lun          *curlun;
+       unsigned int            exception_req_tag;
+       int                     rc;
+
+       /* Clear the existing signals.  Anything but SIGUSR1 is converted
+        * into a high-priority EXIT exception. */
+       for (;;) {
+               sig = dequeue_signal_lock(current, &current->blocked, &info);
+               if (!sig)
+                       break;
+               if (sig != SIGUSR1) {
+                       if (fsg->state < FSG_STATE_EXIT)
+                               DBG(fsg, "Main thread exiting on signal\n");
+                       raise_exception(fsg, FSG_STATE_EXIT);
+               }
+       }
+
+       /* Cancel all the pending transfers */
+       if (fsg->intreq_busy)
+               usb_ep_dequeue(fsg->intr_in, fsg->intreq);
+       for (i = 0; i < fsg_num_buffers; ++i) {
+               bh = &fsg->buffhds[i];
+               if (bh->inreq_busy)
+                       usb_ep_dequeue(fsg->bulk_in, bh->inreq);
+               if (bh->outreq_busy)
+                       usb_ep_dequeue(fsg->bulk_out, bh->outreq);
+       }
+
+       /* Wait until everything is idle */
+       for (;;) {
+               num_active = fsg->intreq_busy;
+               for (i = 0; i < fsg_num_buffers; ++i) {
+                       bh = &fsg->buffhds[i];
+                       num_active += bh->inreq_busy + bh->outreq_busy;
+               }
+               if (num_active == 0)
+                       break;
+               if (sleep_thread(fsg))
+                       return;
+       }
+
+       /* Clear out the controller's fifos */
+       if (fsg->bulk_in_enabled)
+               usb_ep_fifo_flush(fsg->bulk_in);
+       if (fsg->bulk_out_enabled)
+               usb_ep_fifo_flush(fsg->bulk_out);
+       if (fsg->intr_in_enabled)
+               usb_ep_fifo_flush(fsg->intr_in);
+
+       /* Reset the I/O buffer states and pointers, the SCSI
+        * state, and the exception.  Then invoke the handler. */
+       spin_lock_irq(&fsg->lock);
+
+       for (i = 0; i < fsg_num_buffers; ++i) {
+               bh = &fsg->buffhds[i];
+               bh->state = BUF_STATE_EMPTY;
+       }
+       fsg->next_buffhd_to_fill = fsg->next_buffhd_to_drain =
+                       &fsg->buffhds[0];
+
+       exception_req_tag = fsg->exception_req_tag;
+       new_config = fsg->new_config;
+       old_state = fsg->state;
+
+       if (old_state == FSG_STATE_ABORT_BULK_OUT)
+               fsg->state = FSG_STATE_STATUS_PHASE;
+       else {
+               for (i = 0; i < fsg->nluns; ++i) {
+                       curlun = &fsg->luns[i];
+                       curlun->prevent_medium_removal = 0;
+                       curlun->sense_data = curlun->unit_attention_data =
+                                       SS_NO_SENSE;
+                       curlun->sense_data_info = 0;
+                       curlun->info_valid = 0;
+               }
+               fsg->state = FSG_STATE_IDLE;
+       }
+       spin_unlock_irq(&fsg->lock);
+
+       /* Carry out any extra actions required for the exception */
+       switch (old_state) {
+       default:
+               break;
+
+       case FSG_STATE_ABORT_BULK_OUT:
+               send_status(fsg);
+               spin_lock_irq(&fsg->lock);
+               if (fsg->state == FSG_STATE_STATUS_PHASE)
+                       fsg->state = FSG_STATE_IDLE;
+               spin_unlock_irq(&fsg->lock);
+               break;
+
+       case FSG_STATE_RESET:
+               /* In case we were forced against our will to halt a
+                * bulk endpoint, clear the halt now.  (The SuperH UDC
+                * requires this.) */
+               if (test_and_clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
+                       usb_ep_clear_halt(fsg->bulk_in);
+
+               if (transport_is_bbb()) {
+                       if (fsg->ep0_req_tag == exception_req_tag)
+                               ep0_queue(fsg); // Complete the status stage
+
+               } else if (transport_is_cbi())
+                       send_status(fsg);       // Status by interrupt pipe
+
+               /* Technically this should go here, but it would only be
+                * a waste of time.  Ditto for the INTERFACE_CHANGE and
+                * CONFIG_CHANGE cases. */
+               // for (i = 0; i < fsg->nluns; ++i)
+               //      fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED;
+               break;
+
+       case FSG_STATE_INTERFACE_CHANGE:
+               rc = do_set_interface(fsg, 0);
+               if (fsg->ep0_req_tag != exception_req_tag)
+                       break;
+               if (rc != 0)                    // STALL on errors
+                       fsg_set_halt(fsg, fsg->ep0);
+               else                            // Complete the status stage
+                       ep0_queue(fsg);
+               break;
+
+       case FSG_STATE_CONFIG_CHANGE:
+               rc = do_set_config(fsg, new_config);
+               if (fsg->ep0_req_tag != exception_req_tag)
+                       break;
+               if (rc != 0)                    // STALL on errors
+                       fsg_set_halt(fsg, fsg->ep0);
+               else                            // Complete the status stage
+                       ep0_queue(fsg);
+               break;
+
+       case FSG_STATE_DISCONNECT:
+               for (i = 0; i < fsg->nluns; ++i)
+                       fsg_lun_fsync_sub(fsg->luns + i);
+               do_set_config(fsg, 0);          // Unconfigured state
+               break;
+
+       case FSG_STATE_EXIT:
+       case FSG_STATE_TERMINATED:
+               do_set_config(fsg, 0);                  // Free resources
+               spin_lock_irq(&fsg->lock);
+               fsg->state = FSG_STATE_TERMINATED;      // Stop the thread
+               spin_unlock_irq(&fsg->lock);
+               break;
+       }
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int fsg_main_thread(void *fsg_)
+{
+       struct fsg_dev          *fsg = fsg_;
+
+       /* Allow the thread to be killed by a signal, but set the signal mask
+        * to block everything but INT, TERM, KILL, and USR1. */
+       allow_signal(SIGINT);
+       allow_signal(SIGTERM);
+       allow_signal(SIGKILL);
+       allow_signal(SIGUSR1);
+
+       /* Allow the thread to be frozen */
+       set_freezable();
+
+       /* Arrange for userspace references to be interpreted as kernel
+        * pointers.  That way we can pass a kernel pointer to a routine
+        * that expects a __user pointer and it will work okay. */
+       set_fs(get_ds());
+
+       /* The main loop */
+       while (fsg->state != FSG_STATE_TERMINATED) {
+               if (exception_in_progress(fsg) || signal_pending(current)) {
+                       handle_exception(fsg);
+                       continue;
+               }
+
+               if (!fsg->running) {
+                       sleep_thread(fsg);
+                       continue;
+               }
+
+               if (get_next_command(fsg))
+                       continue;
+
+               spin_lock_irq(&fsg->lock);
+               if (!exception_in_progress(fsg))
+                       fsg->state = FSG_STATE_DATA_PHASE;
+               spin_unlock_irq(&fsg->lock);
+
+               if (do_scsi_command(fsg) || finish_reply(fsg))
+                       continue;
+
+               spin_lock_irq(&fsg->lock);
+               if (!exception_in_progress(fsg))
+                       fsg->state = FSG_STATE_STATUS_PHASE;
+               spin_unlock_irq(&fsg->lock);
+
+               if (send_status(fsg))
+                       continue;
+
+               spin_lock_irq(&fsg->lock);
+               if (!exception_in_progress(fsg))
+                       fsg->state = FSG_STATE_IDLE;
+               spin_unlock_irq(&fsg->lock);
+               }
+
+       spin_lock_irq(&fsg->lock);
+       fsg->thread_task = NULL;
+       spin_unlock_irq(&fsg->lock);
+
+       /* If we are exiting because of a signal, unregister the
+        * gadget driver. */
+       if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
+               usb_gadget_unregister_driver(&fsg_driver);
+
+       /* Let the unbind and cleanup routines know the thread has exited */
+       complete_and_exit(&fsg->thread_notifier, 0);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+
+/* The write permissions and store_xxx pointers are set in fsg_bind() */
+static DEVICE_ATTR(ro, 0444, fsg_show_ro, NULL);
+static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, NULL);
+static DEVICE_ATTR(file, 0444, fsg_show_file, NULL);
+
+
+/*-------------------------------------------------------------------------*/
+
+static void fsg_release(struct kref *ref)
+{
+       struct fsg_dev  *fsg = container_of(ref, struct fsg_dev, ref);
+
+       kfree(fsg->luns);
+       kfree(fsg);
+}
+
+static void lun_release(struct device *dev)
+{
+       struct rw_semaphore     *filesem = dev_get_drvdata(dev);
+       struct fsg_dev          *fsg =
+               container_of(filesem, struct fsg_dev, filesem);
+
+       kref_put(&fsg->ref, fsg_release);
+}
+
+static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
+{
+       struct fsg_dev          *fsg = get_gadget_data(gadget);
+       int                     i;
+       struct fsg_lun          *curlun;
+       struct usb_request      *req = fsg->ep0req;
+
+       DBG(fsg, "unbind\n");
+       clear_bit(REGISTERED, &fsg->atomic_bitflags);
+
+       /* If the thread isn't already dead, tell it to exit now */
+       if (fsg->state != FSG_STATE_TERMINATED) {
+               raise_exception(fsg, FSG_STATE_EXIT);
+               wait_for_completion(&fsg->thread_notifier);
+
+               /* The cleanup routine waits for this completion also */
+               complete(&fsg->thread_notifier);
+       }
+
+       /* Unregister the sysfs attribute files and the LUNs */
+       for (i = 0; i < fsg->nluns; ++i) {
+               curlun = &fsg->luns[i];
+               if (curlun->registered) {
+                       device_remove_file(&curlun->dev, &dev_attr_nofua);
+                       device_remove_file(&curlun->dev, &dev_attr_ro);
+                       device_remove_file(&curlun->dev, &dev_attr_file);
+                       fsg_lun_close(curlun);
+                       device_unregister(&curlun->dev);
+                       curlun->registered = 0;
+               }
+       }
+
+       /* Free the data buffers */
+       for (i = 0; i < fsg_num_buffers; ++i)
+               kfree(fsg->buffhds[i].buf);
+
+       /* Free the request and buffer for endpoint 0 */
+       if (req) {
+               kfree(req->buf);
+               usb_ep_free_request(fsg->ep0, req);
+       }
+
+       set_gadget_data(gadget, NULL);
+}
+
+
+static int __init check_parameters(struct fsg_dev *fsg)
+{
+       int     prot;
+       int     gcnum;
+
+       /* Store the default values */
+       mod_data.transport_type = USB_PR_BULK;
+       mod_data.transport_name = "Bulk-only";
+       mod_data.protocol_type = USB_SC_SCSI;
+       mod_data.protocol_name = "Transparent SCSI";
+
+       /* Some peripheral controllers are known not to be able to
+        * halt bulk endpoints correctly.  If one of them is present,
+        * disable stalls.
+        */
+       if (gadget_is_at91(fsg->gadget))
+               mod_data.can_stall = 0;
+
+       if (mod_data.release == 0xffff) {       // Parameter wasn't set
+               gcnum = usb_gadget_controller_number(fsg->gadget);
+               if (gcnum >= 0)
+                       mod_data.release = 0x0300 + gcnum;
+               else {
+                       WARNING(fsg, "controller '%s' not recognized\n",
+                               fsg->gadget->name);
+                       mod_data.release = 0x0399;
+               }
+       }
+
+       prot = simple_strtol(mod_data.protocol_parm, NULL, 0);
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+       if (strnicmp(mod_data.transport_parm, "BBB", 10) == 0) {
+               ;               // Use default setting
+       } else if (strnicmp(mod_data.transport_parm, "CB", 10) == 0) {
+               mod_data.transport_type = USB_PR_CB;
+               mod_data.transport_name = "Control-Bulk";
+       } else if (strnicmp(mod_data.transport_parm, "CBI", 10) == 0) {
+               mod_data.transport_type = USB_PR_CBI;
+               mod_data.transport_name = "Control-Bulk-Interrupt";
+       } else {
+               ERROR(fsg, "invalid transport: %s\n", mod_data.transport_parm);
+               return -EINVAL;
+       }
+
+       if (strnicmp(mod_data.protocol_parm, "SCSI", 10) == 0 ||
+                       prot == USB_SC_SCSI) {
+               ;               // Use default setting
+       } else if (strnicmp(mod_data.protocol_parm, "RBC", 10) == 0 ||
+                       prot == USB_SC_RBC) {
+               mod_data.protocol_type = USB_SC_RBC;
+               mod_data.protocol_name = "RBC";
+       } else if (strnicmp(mod_data.protocol_parm, "8020", 4) == 0 ||
+                       strnicmp(mod_data.protocol_parm, "ATAPI", 10) == 0 ||
+                       prot == USB_SC_8020) {
+               mod_data.protocol_type = USB_SC_8020;
+               mod_data.protocol_name = "8020i (ATAPI)";
+       } else if (strnicmp(mod_data.protocol_parm, "QIC", 3) == 0 ||
+                       prot == USB_SC_QIC) {
+               mod_data.protocol_type = USB_SC_QIC;
+               mod_data.protocol_name = "QIC-157";
+       } else if (strnicmp(mod_data.protocol_parm, "UFI", 10) == 0 ||
+                       prot == USB_SC_UFI) {
+               mod_data.protocol_type = USB_SC_UFI;
+               mod_data.protocol_name = "UFI";
+       } else if (strnicmp(mod_data.protocol_parm, "8070", 4) == 0 ||
+                       prot == USB_SC_8070) {
+               mod_data.protocol_type = USB_SC_8070;
+               mod_data.protocol_name = "8070i";
+       } else {
+               ERROR(fsg, "invalid protocol: %s\n", mod_data.protocol_parm);
+               return -EINVAL;
+       }
+
+       mod_data.buflen &= PAGE_CACHE_MASK;
+       if (mod_data.buflen <= 0) {
+               ERROR(fsg, "invalid buflen\n");
+               return -ETOOSMALL;
+       }
+
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+       /* Serial string handling.
+        * On a real device, the serial string would be loaded
+        * from permanent storage. */
+       if (mod_data.serial) {
+               const char *ch;
+               unsigned len = 0;
+
+               /* Sanity check :
+                * The CB[I] specification limits the serial string to
+                * 12 uppercase hexadecimal characters.
+                * BBB need at least 12 uppercase hexadecimal characters,
+                * with a maximum of 126. */
+               for (ch = mod_data.serial; *ch; ++ch) {
+                       ++len;
+                       if ((*ch < '0' || *ch > '9') &&
+                           (*ch < 'A' || *ch > 'F')) { /* not uppercase hex */
+                               WARNING(fsg,
+                                       "Invalid serial string character: %c\n",
+                                       *ch);
+                               goto no_serial;
+                       }
+               }
+               if (len > 126 ||
+                   (mod_data.transport_type == USB_PR_BULK && len < 12) ||
+                   (mod_data.transport_type != USB_PR_BULK && len > 12)) {
+                       WARNING(fsg, "Invalid serial string length!\n");
+                       goto no_serial;
+               }
+               fsg_strings[FSG_STRING_SERIAL - 1].s = mod_data.serial;
+       } else {
+               WARNING(fsg, "No serial-number string provided!\n");
+ no_serial:
+               device_desc.iSerialNumber = 0;
+       }
+
+       return 0;
+}
+
+
+static int __init fsg_bind(struct usb_gadget *gadget)
+{
+       struct fsg_dev          *fsg = the_fsg;
+       int                     rc;
+       int                     i;
+       struct fsg_lun          *curlun;
+       struct usb_ep           *ep;
+       struct usb_request      *req;
+       char                    *pathbuf, *p;
+
+       fsg->gadget = gadget;
+       set_gadget_data(gadget, fsg);
+       fsg->ep0 = gadget->ep0;
+       fsg->ep0->driver_data = fsg;
+
+       if ((rc = check_parameters(fsg)) != 0)
+               goto out;
+
+       if (mod_data.removable) {       // Enable the store_xxx attributes
+               dev_attr_file.attr.mode = 0644;
+               dev_attr_file.store = fsg_store_file;
+               if (!mod_data.cdrom) {
+                       dev_attr_ro.attr.mode = 0644;
+                       dev_attr_ro.store = fsg_store_ro;
+               }
+       }
+
+       /* Only for removable media? */
+       dev_attr_nofua.attr.mode = 0644;
+       dev_attr_nofua.store = fsg_store_nofua;
+
+       /* Find out how many LUNs there should be */
+       i = mod_data.nluns;
+       if (i == 0)
+               i = max(mod_data.num_filenames, 1u);
+       if (i > FSG_MAX_LUNS) {
+               ERROR(fsg, "invalid number of LUNs: %d\n", i);
+               rc = -EINVAL;
+               goto out;
+       }
+
+       /* Create the LUNs, open their backing files, and register the
+        * LUN devices in sysfs. */
+       fsg->luns = kzalloc(i * sizeof(struct fsg_lun), GFP_KERNEL);
+       if (!fsg->luns) {
+               rc = -ENOMEM;
+               goto out;
+       }
+       fsg->nluns = i;
+
+       for (i = 0; i < fsg->nluns; ++i) {
+               curlun = &fsg->luns[i];
+               curlun->cdrom = !!mod_data.cdrom;
+               curlun->ro = mod_data.cdrom || mod_data.ro[i];
+               curlun->initially_ro = curlun->ro;
+               curlun->removable = mod_data.removable;
+               curlun->nofua = mod_data.nofua[i];
+               curlun->dev.release = lun_release;
+               curlun->dev.parent = &gadget->dev;
+               curlun->dev.driver = &fsg_driver.driver;
+               dev_set_drvdata(&curlun->dev, &fsg->filesem);
+               dev_set_name(&curlun->dev,"%s-lun%d",
+                            dev_name(&gadget->dev), i);
+
+               kref_get(&fsg->ref);
+               rc = device_register(&curlun->dev);
+               if (rc) {
+                       INFO(fsg, "failed to register LUN%d: %d\n", i, rc);
+                       put_device(&curlun->dev);
+                       goto out;
+               }
+               curlun->registered = 1;
+
+               rc = device_create_file(&curlun->dev, &dev_attr_ro);
+               if (rc)
+                       goto out;
+               rc = device_create_file(&curlun->dev, &dev_attr_nofua);
+               if (rc)
+                       goto out;
+               rc = device_create_file(&curlun->dev, &dev_attr_file);
+               if (rc)
+                       goto out;
+
+               if (mod_data.file[i] && *mod_data.file[i]) {
+                       rc = fsg_lun_open(curlun, mod_data.file[i]);
+                       if (rc)
+                               goto out;
+               } else if (!mod_data.removable) {
+                       ERROR(fsg, "no file given for LUN%d\n", i);
+                       rc = -EINVAL;
+                       goto out;
+               }
+       }
+
+       /* Find all the endpoints we will use */
+       usb_ep_autoconfig_reset(gadget);
+       ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc);
+       if (!ep)
+               goto autoconf_fail;
+       ep->driver_data = fsg;          // claim the endpoint
+       fsg->bulk_in = ep;
+
+       ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc);
+       if (!ep)
+               goto autoconf_fail;
+       ep->driver_data = fsg;          // claim the endpoint
+       fsg->bulk_out = ep;
+
+       if (transport_is_cbi()) {
+               ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc);
+               if (!ep)
+                       goto autoconf_fail;
+               ep->driver_data = fsg;          // claim the endpoint
+               fsg->intr_in = ep;
+       }
+
+       /* Fix up the descriptors */
+       device_desc.idVendor = cpu_to_le16(mod_data.vendor);
+       device_desc.idProduct = cpu_to_le16(mod_data.product);
+       device_desc.bcdDevice = cpu_to_le16(mod_data.release);
+
+       i = (transport_is_cbi() ? 3 : 2);       // Number of endpoints
+       fsg_intf_desc.bNumEndpoints = i;
+       fsg_intf_desc.bInterfaceSubClass = mod_data.protocol_type;
+       fsg_intf_desc.bInterfaceProtocol = mod_data.transport_type;
+       fsg_fs_function[i + FSG_FS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+       if (gadget_is_dualspeed(gadget)) {
+               fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+               /* Assume endpoint addresses are the same for both speeds */
+               fsg_hs_bulk_in_desc.bEndpointAddress =
+                       fsg_fs_bulk_in_desc.bEndpointAddress;
+               fsg_hs_bulk_out_desc.bEndpointAddress =
+                       fsg_fs_bulk_out_desc.bEndpointAddress;
+               fsg_hs_intr_in_desc.bEndpointAddress =
+                       fsg_fs_intr_in_desc.bEndpointAddress;
+       }
+
+       if (gadget_is_superspeed(gadget)) {
+               unsigned                max_burst;
+
+               fsg_ss_function[i + FSG_SS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+               /* Calculate bMaxBurst, we know packet size is 1024 */
+               max_burst = min_t(unsigned, mod_data.buflen / 1024, 15);
+
+               /* Assume endpoint addresses are the same for both speeds */
+               fsg_ss_bulk_in_desc.bEndpointAddress =
+                       fsg_fs_bulk_in_desc.bEndpointAddress;
+               fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst;
+
+               fsg_ss_bulk_out_desc.bEndpointAddress =
+                       fsg_fs_bulk_out_desc.bEndpointAddress;
+               fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst;
+       }
+
+       if (gadget_is_otg(gadget))
+               fsg_otg_desc.bmAttributes |= USB_OTG_HNP;
+
+       rc = -ENOMEM;
+
+       /* Allocate the request and buffer for endpoint 0 */
+       fsg->ep0req = req = usb_ep_alloc_request(fsg->ep0, GFP_KERNEL);
+       if (!req)
+               goto out;
+       req->buf = kmalloc(EP0_BUFSIZE, GFP_KERNEL);
+       if (!req->buf)
+               goto out;
+       req->complete = ep0_complete;
+
+       /* Allocate the data buffers */
+       for (i = 0; i < fsg_num_buffers; ++i) {
+               struct fsg_buffhd       *bh = &fsg->buffhds[i];
+
+               /* Allocate for the bulk-in endpoint.  We assume that
+                * the buffer will also work with the bulk-out (and
+                * interrupt-in) endpoint. */
+               bh->buf = kmalloc(mod_data.buflen, GFP_KERNEL);
+               if (!bh->buf)
+                       goto out;
+               bh->next = bh + 1;
+       }
+       fsg->buffhds[fsg_num_buffers - 1].next = &fsg->buffhds[0];
+
+       /* This should reflect the actual gadget power source */
+       usb_gadget_set_selfpowered(gadget);
+
+       snprintf(fsg_string_manufacturer, sizeof fsg_string_manufacturer,
+                       "%s %s with %s",
+                       init_utsname()->sysname, init_utsname()->release,
+                       gadget->name);
+
+       fsg->thread_task = kthread_create(fsg_main_thread, fsg,
+                       "file-storage-gadget");
+       if (IS_ERR(fsg->thread_task)) {
+               rc = PTR_ERR(fsg->thread_task);
+               goto out;
+       }
+
+       INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
+       INFO(fsg, "NOTE: This driver is deprecated.  "
+                       "Consider using g_mass_storage instead.\n");
+       INFO(fsg, "Number of LUNs=%d\n", fsg->nluns);
+
+       pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
+       for (i = 0; i < fsg->nluns; ++i) {
+               curlun = &fsg->luns[i];
+               if (fsg_lun_is_open(curlun)) {
+                       p = NULL;
+                       if (pathbuf) {
+                               p = d_path(&curlun->filp->f_path,
+                                          pathbuf, PATH_MAX);
+                               if (IS_ERR(p))
+                                       p = NULL;
+                       }
+                       LINFO(curlun, "ro=%d, nofua=%d, file: %s\n",
+                             curlun->ro, curlun->nofua, (p ? p : "(error)"));
+               }
+       }
+       kfree(pathbuf);
+
+       DBG(fsg, "transport=%s (x%02x)\n",
+                       mod_data.transport_name, mod_data.transport_type);
+       DBG(fsg, "protocol=%s (x%02x)\n",
+                       mod_data.protocol_name, mod_data.protocol_type);
+       DBG(fsg, "VendorID=x%04x, ProductID=x%04x, Release=x%04x\n",
+                       mod_data.vendor, mod_data.product, mod_data.release);
+       DBG(fsg, "removable=%d, stall=%d, cdrom=%d, buflen=%u\n",
+                       mod_data.removable, mod_data.can_stall,
+                       mod_data.cdrom, mod_data.buflen);
+       DBG(fsg, "I/O thread pid: %d\n", task_pid_nr(fsg->thread_task));
+
+       set_bit(REGISTERED, &fsg->atomic_bitflags);
+
+       /* Tell the thread to start working */
+       wake_up_process(fsg->thread_task);
+       return 0;
+
+autoconf_fail:
+       ERROR(fsg, "unable to autoconfigure all endpoints\n");
+       rc = -ENOTSUPP;
+
+out:
+       fsg->state = FSG_STATE_TERMINATED;      // The thread is dead
+       fsg_unbind(gadget);
+       complete(&fsg->thread_notifier);
+       return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void fsg_suspend(struct usb_gadget *gadget)
+{
+       struct fsg_dev          *fsg = get_gadget_data(gadget);
+
+       DBG(fsg, "suspend\n");
+       set_bit(SUSPENDED, &fsg->atomic_bitflags);
+}
+
+static void fsg_resume(struct usb_gadget *gadget)
+{
+       struct fsg_dev          *fsg = get_gadget_data(gadget);
+
+       DBG(fsg, "resume\n");
+       clear_bit(SUSPENDED, &fsg->atomic_bitflags);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_gadget_driver                fsg_driver = {
+       .max_speed      = USB_SPEED_SUPER,
+       .function       = (char *) fsg_string_product,
+       .unbind         = fsg_unbind,
+       .disconnect     = fsg_disconnect,
+       .setup          = fsg_setup,
+       .suspend        = fsg_suspend,
+       .resume         = fsg_resume,
+
+       .driver         = {
+               .name           = DRIVER_NAME,
+               .owner          = THIS_MODULE,
+               // .release = ...
+               // .suspend = ...
+               // .resume = ...
+       },
+};
+
+
+static int __init fsg_alloc(void)
+{
+       struct fsg_dev          *fsg;
+
+       fsg = kzalloc(sizeof *fsg +
+                     fsg_num_buffers * sizeof *(fsg->buffhds), GFP_KERNEL);
+
+       if (!fsg)
+               return -ENOMEM;
+       spin_lock_init(&fsg->lock);
+       init_rwsem(&fsg->filesem);
+       kref_init(&fsg->ref);
+       init_completion(&fsg->thread_notifier);
+
+       the_fsg = fsg;
+       return 0;
+}
+
+
+static int __init fsg_init(void)
+{
+       int             rc;
+       struct fsg_dev  *fsg;
+
+       rc = fsg_num_buffers_validate();
+       if (rc != 0)
+               return rc;
+
+       if ((rc = fsg_alloc()) != 0)
+               return rc;
+       fsg = the_fsg;
+       if ((rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind)) != 0)
+               kref_put(&fsg->ref, fsg_release);
+       return rc;
+}
+module_init(fsg_init);
+
+
+static void __exit fsg_cleanup(void)
+{
+       struct fsg_dev  *fsg = the_fsg;
+
+       /* Unregister the driver iff the thread hasn't already done so */
+       if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
+               usb_gadget_unregister_driver(&fsg_driver);
+
+       /* Wait for the thread to finish up */
+       wait_for_completion(&fsg->thread_notifier);
+
+       kref_put(&fsg->ref, fsg_release);
+}
+module_exit(fsg_cleanup);
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 344d5e2..0937bde 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -663,6 +663,19 @@ config USB_HWA_HCD
          To compile this driver a module, choose M here: the module
          will be called "hwa-hc".
 
+config USB_DWCOTG
+       tristate "Synopsis DWC host support"
+       depends on USB
+       help
+         The Synopsis DWC controller is a dual-role
+         host/peripheral/OTG ("On The Go") USB controllers.
+
+         Enable this option to support this IP in host controller mode.
+         If unsure, say N.
+
+         To compile this driver as a module, choose M here: the
+         modules built will be called dwc_otg and dwc_common_port.
+
 config USB_IMX21_HCD
        tristate "i.MX21 HCD support"
        depends on ARM && ARCH_MXC
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 4fb73c1..76d97de 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -47,6 +47,8 @@ obj-$(CONFIG_USB_U132_HCD)    += u132-hcd.o
 obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
 obj-$(CONFIG_USB_ISP1760_HCD)  += isp1760.o
 obj-$(CONFIG_USB_HWA_HCD)      += hwa-hc.o
+
+obj-$(CONFIG_USB_DWCOTG)        += dwc_otg/ dwc_common_port/
 obj-$(CONFIG_USB_IMX21_HCD)    += imx21-hcd.o
 obj-$(CONFIG_USB_FSL_MPH_DR_OF)        += fsl-mph-dr-of.o
 obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o
diff --git a/drivers/usb/host/dwc_common_port/Makefile b/drivers/usb/host/dwc_common_port/Makefile
new file mode 100644
index 0000000..63e3485
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/Makefile
@@ -0,0 +1,58 @@
+#
+# Makefile for DWC_common library
+#
+
+ifneq ($(KERNELRELEASE),)
+
+EXTRA_CFLAGS   += -DDWC_LINUX
+#EXTRA_CFLAGS  += -DDEBUG
+#EXTRA_CFLAGS  += -DDWC_DEBUG_REGS
+#EXTRA_CFLAGS  += -DDWC_DEBUG_MEMORY
+
+EXTRA_CFLAGS   += -DDWC_LIBMODULE
+EXTRA_CFLAGS   += -DDWC_CCLIB
+#EXTRA_CFLAGS  += -DDWC_CRYPTOLIB
+EXTRA_CFLAGS   += -DDWC_NOTIFYLIB
+EXTRA_CFLAGS   += -DDWC_UTFLIB
+
+obj-$(CONFIG_USB_DWCOTG)       += dwc_common_port_lib.o
+dwc_common_port_lib-objs := dwc_cc.o dwc_modpow.o dwc_dh.o \
+                           dwc_crypto.o dwc_notifier.o \
+                           dwc_common_linux.o dwc_mem.o
+
+kernrelwd := $(subst ., ,$(KERNELRELEASE))
+kernrel3 := $(word 1,$(kernrelwd)).$(word 2,$(kernrelwd)).$(word 3,$(kernrelwd))
+                           
+ifneq ($(kernrel3),2.6.20)
+# grayg - I only know that we use EXTRA_CFLAGS in 2.6.31 actually
+EXTRA_CFLAGS += $(CPPFLAGS)
+endif
+
+else
+
+#ifeq ($(KDIR),)
+#$(error Must give "KDIR=/path/to/kernel/source" on command line or in environment)
+#endif
+
+ifeq ($(ARCH),)
+$(error Must give "ARCH=<arch>" on command line or in environment. Also, if \
+ cross-compiling, must give "CROSS_COMPILE=/path/to/compiler/plus/tool-prefix-")
+endif
+
+ifeq ($(DOXYGEN),)
+DOXYGEN                := doxygen
+endif
+
+default:
+       $(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+
+docs:  $(wildcard *.[hc]) doc/doxygen.cfg
+       $(DOXYGEN) doc/doxygen.cfg
+
+tags:  $(wildcard *.[hc])
+       $(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
+
+endif
+
+clean:
+       rm -rf *.o *.ko .*.cmd *.mod.c .*.o.d .*.o.tmp modules.order Module.markers Module.symvers .tmp_versions/
diff --git a/drivers/usb/host/dwc_common_port/Makefile.fbsd b/drivers/usb/host/dwc_common_port/Makefile.fbsd
new file mode 100644
index 0000000..45db991
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/Makefile.fbsd
@@ -0,0 +1,17 @@
+CFLAGS += -I/sys/i386/compile/GENERIC -I/sys/i386/include -I/usr/include
+CFLAGS += -DDWC_FREEBSD
+CFLAGS += -DDEBUG
+#CFLAGS        += -DDWC_DEBUG_REGS
+#CFLAGS        += -DDWC_DEBUG_MEMORY
+
+#CFLAGS        += -DDWC_LIBMODULE
+#CFLAGS        += -DDWC_CCLIB
+#CFLAGS        += -DDWC_CRYPTOLIB
+#CFLAGS        += -DDWC_NOTIFYLIB
+#CFLAGS        += -DDWC_UTFLIB
+
+KMOD = dwc_common_port_lib
+SRCS = dwc_cc.c dwc_modpow.c dwc_dh.c dwc_crypto.c dwc_notifier.c \
+       dwc_common_fbsd.c dwc_mem.c
+
+.include <bsd.kmod.mk>
diff --git a/drivers/usb/host/dwc_common_port/Makefile.linux b/drivers/usb/host/dwc_common_port/Makefile.linux
new file mode 100644
index 0000000..961df3f
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/Makefile.linux
@@ -0,0 +1,49 @@
+#
+# Makefile for DWC_common library
+#
+ifneq ($(KERNELRELEASE),)
+
+EXTRA_CFLAGS   += -DDWC_LINUX
+#EXTRA_CFLAGS  += -DDEBUG
+#EXTRA_CFLAGS  += -DDWC_DEBUG_REGS
+#EXTRA_CFLAGS  += -DDWC_DEBUG_MEMORY
+
+EXTRA_CFLAGS   += -DDWC_LIBMODULE
+EXTRA_CFLAGS   += -DDWC_CCLIB
+EXTRA_CFLAGS   += -DDWC_CRYPTOLIB
+EXTRA_CFLAGS   += -DDWC_NOTIFYLIB
+EXTRA_CFLAGS   += -DDWC_UTFLIB
+
+obj-m                   := dwc_common_port_lib.o
+dwc_common_port_lib-objs := dwc_cc.o dwc_modpow.o dwc_dh.o \
+                           dwc_crypto.o dwc_notifier.o \
+                           dwc_common_linux.o dwc_mem.o
+
+else
+
+ifeq ($(KDIR),)
+$(error Must give "KDIR=/path/to/kernel/source" on command line or in environment)
+endif
+
+ifeq ($(ARCH),)
+$(error Must give "ARCH=<arch>" on command line or in environment. Also, if \
+ cross-compiling, must give "CROSS_COMPILE=/path/to/compiler/plus/tool-prefix-")
+endif
+
+ifeq ($(DOXYGEN),)
+DOXYGEN                := doxygen
+endif
+
+default:
+       $(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+
+docs:  $(wildcard *.[hc]) doc/doxygen.cfg
+       $(DOXYGEN) doc/doxygen.cfg
+
+tags:  $(wildcard *.[hc])
+       $(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
+
+endif
+
+clean:
+       rm -rf *.o *.ko .*.cmd *.mod.c .*.o.d .*.o.tmp modules.order Module.markers Module.symvers .tmp_versions/
diff --git a/drivers/usb/host/dwc_common_port/changes.txt b/drivers/usb/host/dwc_common_port/changes.txt
new file mode 100644
index 0000000..f6839f9
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/changes.txt
@@ -0,0 +1,174 @@
+
+dwc_read_reg32() and friends now take an additional parameter, a pointer to an
+IO context struct. The IO context struct should live in an os-dependent struct
+in your driver. As an example, the dwc_usb3 driver has an os-dependent struct
+named 'os_dep' embedded in the main device struct. So there these calls look
+like this:
+
+       dwc_read_reg32(&usb3_dev->os_dep.ioctx, &pcd->dev_global_regs->dcfg);
+
+       dwc_write_reg32(&usb3_dev->os_dep.ioctx,
+                       &pcd->dev_global_regs->dcfg, 0);
+
+Note that for the existing Linux driver ports, it is not necessary to actually
+define the 'ioctx' member in the os-dependent struct. Since Linux does not
+require an IO context, its macros for dwc_read_reg32() and friends do not
+use the context pointer, so it is optimized away by the compiler. But it is
+necessary to add the pointer parameter to all of the call sites, to be ready
+for any future ports (such as FreeBSD) which do require an IO context.
+
+
+Similarly, dwc_alloc(), dwc_alloc_atomic(), dwc_strdup(), and dwc_free() now
+take an additional parameter, a pointer to a memory context. Examples:
+
+       addr = dwc_alloc(&usb3_dev->os_dep.memctx, size);
+
+       dwc_free(&usb3_dev->os_dep.memctx, addr);
+
+Again, for the Linux ports, it is not necessary to actually define the memctx
+member, but it is necessary to add the pointer parameter to all of the call
+sites.
+
+
+Same for dwc_dma_alloc() and dwc_dma_free(). Examples:
+
+       virt_addr = dwc_dma_alloc(&usb3_dev->os_dep.dmactx, size, &phys_addr);
+
+       dwc_dma_free(&usb3_dev->os_dep.dmactx, size, virt_addr, phys_addr);
+
+
+Same for dwc_mutex_alloc() and dwc_mutex_free(). Examples:
+
+       mutex = dwc_mutex_alloc(&usb3_dev->os_dep.mtxctx);
+
+       dwc_mutex_free(&usb3_dev->os_dep.mtxctx, mutex);
+
+
+Same for dwc_spinlock_alloc() and dwc_spinlock_free(). Examples:
+
+       lock = dwc_spinlock_alloc(&usb3_dev->osdep.splctx);
+
+       dwc_spinlock_free(&usb3_dev->osdep.splctx, lock);
+
+
+Same for dwc_timer_alloc(). Example:
+
+       timer = dwc_timer_alloc(&usb3_dev->os_dep.tmrctx, "dwc_usb3_tmr1",
+                               cb_func, cb_data);
+
+
+Same for dwc_waitq_alloc(). Example:
+
+       waitq = dwc_waitq_alloc(&usb3_dev->os_dep.wtqctx);
+
+
+Same for dwc_thread_run(). Example:
+
+       thread = dwc_thread_run(&usb3_dev->os_dep.thdctx, func,
+                               "dwc_usb3_thd1", data);
+
+
+Same for dwc_workq_alloc(). Example:
+
+       workq = dwc_workq_alloc(&usb3_dev->osdep.wkqctx, "dwc_usb3_wkq1");
+
+
+Same for dwc_task_alloc(). Example:
+
+       task = dwc_task_alloc(&usb3_dev->os_dep.tskctx, "dwc_usb3_tsk1",
+                             cb_func, cb_data);
+
+
+In addition to the context pointer additions, a few core functions have had
+other changes made to their parameters:
+
+The 'flags' parameter to dwc_spinlock_irqsave() and dwc_spinunlock_irqrestore()
+has been changed from a uint64_t to a dwc_irqflags_t.
+
+dwc_thread_should_stop() now takes a 'dwc_thread_t *' parameter, because the
+FreeBSD equivalent of that function requires it.
+
+And, in addition to the context pointer, dwc_task_alloc() also adds a
+'char *name' parameter, to be consistent with dwc_thread_run() and
+dwc_workq_alloc(), and because the FreeBSD equivalent of that function
+requires a unique name.
+
+
+Here is a complete list of the core functions that now take a pointer to a
+context as their first parameter:
+
+       dwc_read_reg32
+       dwc_read_reg64
+       dwc_write_reg32
+       dwc_write_reg64
+       dwc_modify_reg32
+       dwc_modify_reg64
+       dwc_alloc
+       dwc_alloc_atomic
+       dwc_strdup
+       dwc_free
+       dwc_dma_alloc
+       dwc_dma_free
+       dwc_mutex_alloc
+       dwc_mutex_free
+       dwc_spinlock_alloc
+       dwc_spinlock_free
+       dwc_timer_alloc
+       dwc_waitq_alloc
+       dwc_thread_run
+       dwc_workq_alloc
+       dwc_task_alloc     Also adds a 'char *name' as its 2nd parameter
+
+And here are the core functions that have other changes to their parameters:
+
+       dwc_spinlock_irqsave      'flags' param is now a 'dwc_irqflags_t *'
+       dwc_spinunlock_irqrestore 'flags' param is now a 'dwc_irqflags_t'
+       dwc_thread_should_stop    Adds a 'dwc_thread_t *' parameter
+
+
+
+The changes to the core functions also require some of the other library
+functions to change:
+
+       dwc_cc_if_alloc() and dwc_cc_if_free() now take a 'void *memctx'
+       (for memory allocation) as the 1st param and a 'void *mtxctx'
+       (for mutex allocation) as the 2nd param.
+
+       dwc_cc_clear(), dwc_cc_add(), dwc_cc_change(), dwc_cc_remove(),
+       dwc_cc_data_for_save(), and dwc_cc_restore_from_data() now take a
+       'void *memctx' as the 1st param.
+
+       dwc_dh_modpow(), dwc_dh_pk(), and dwc_dh_derive_keys() now take a
+       'void *memctx' as the 1st param.
+
+       dwc_modpow() now takes a 'void *memctx' as the 1st param.
+
+       dwc_alloc_notification_manager() now takes a 'void *memctx' as the
+       1st param and a 'void *wkqctx' (for work queue allocation) as the 2nd
+       param, and also now returns an integer value that is non-zero if
+       allocation of its data structures or work queue fails.
+
+       dwc_register_notifier() now takes a 'void *memctx' as the 1st param.
+
+       dwc_memory_debug_start() now takes a 'void *mem_ctx' as the first
+       param, and also now returns an integer value that is non-zero if
+       allocation of its data structures fails.
+
+
+
+Other miscellaneous changes:
+
+The DEBUG_MEMORY and DEBUG_REGS #define's have been renamed to
+DWC_DEBUG_MEMORY and DWC_DEBUG_REGS.
+
+The following #define's have been added to allow selectively compiling library
+features:
+
+       DWC_CCLIB
+       DWC_CRYPTOLIB
+       DWC_NOTIFYLIB
+       DWC_UTFLIB
+
+A DWC_LIBMODULE #define has also been added. If this is not defined, then the
+module code in dwc_common_linux.c is not compiled in. This allows linking the
+library code directly into a driver module, instead of as a standalone module.
diff --git a/drivers/usb/host/dwc_common_port/doc/doxygen.cfg b/drivers/usb/host/dwc_common_port/doc/doxygen.cfg
new file mode 100644
index 0000000..605b9dab
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/doc/doxygen.cfg
@@ -0,0 +1,270 @@
+# Doxyfile 1.4.5
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+PROJECT_NAME           = "Synopsys DWC Portability and Common Library for UWB"
+PROJECT_NUMBER         = 
+OUTPUT_DIRECTORY       = doc
+CREATE_SUBDIRS         = NO
+OUTPUT_LANGUAGE        = English
+BRIEF_MEMBER_DESC      = YES
+REPEAT_BRIEF           = YES
+ABBREVIATE_BRIEF       = "The $name class" \
+                         "The $name widget" \
+                         "The $name file" \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+ALWAYS_DETAILED_SEC    = YES
+INLINE_INHERITED_MEMB  = NO
+FULL_PATH_NAMES        = NO
+STRIP_FROM_PATH        = ..
+STRIP_FROM_INC_PATH    = 
+SHORT_NAMES            = NO
+JAVADOC_AUTOBRIEF      = YES
+MULTILINE_CPP_IS_BRIEF = NO
+DETAILS_AT_TOP         = YES
+INHERIT_DOCS           = YES
+SEPARATE_MEMBER_PAGES  = NO
+TAB_SIZE               = 8
+ALIASES                = 
+OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_JAVA   = NO
+BUILTIN_STL_SUPPORT    = NO
+DISTRIBUTE_GROUP_DOC   = NO
+SUBGROUPING            = NO
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+EXTRACT_ALL            = NO
+EXTRACT_PRIVATE        = NO
+EXTRACT_STATIC         = YES
+EXTRACT_LOCAL_CLASSES  = NO
+EXTRACT_LOCAL_METHODS  = NO
+HIDE_UNDOC_MEMBERS     = NO
+HIDE_UNDOC_CLASSES     = NO
+HIDE_FRIEND_COMPOUNDS  = NO
+HIDE_IN_BODY_DOCS      = NO
+INTERNAL_DOCS          = NO
+CASE_SENSE_NAMES       = YES
+HIDE_SCOPE_NAMES       = NO
+SHOW_INCLUDE_FILES     = NO
+INLINE_INFO            = YES
+SORT_MEMBER_DOCS       = NO
+SORT_BRIEF_DOCS        = NO
+SORT_BY_SCOPE_NAME     = NO
+GENERATE_TODOLIST      = YES
+GENERATE_TESTLIST      = YES
+GENERATE_BUGLIST       = YES
+GENERATE_DEPRECATEDLIST= YES
+ENABLED_SECTIONS       = 
+MAX_INITIALIZER_LINES  = 30
+SHOW_USED_FILES        = YES
+SHOW_DIRECTORIES       = YES
+FILE_VERSION_FILTER    = 
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+QUIET                  = YES
+WARNINGS               = YES
+WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_DOC_ERROR      = YES
+WARN_NO_PARAMDOC       = YES
+WARN_FORMAT            = "$file:$line: $text"
+WARN_LOGFILE           = 
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+INPUT                  = .
+FILE_PATTERNS          = *.c \
+                         *.cc \
+                         *.cxx \
+                         *.cpp \
+                         *.c++ \
+                         *.d \
+                         *.java \
+                         *.ii \
+                         *.ixx \
+                         *.ipp \
+                         *.i++ \
+                         *.inl \
+                         *.h \
+                         *.hh \
+                         *.hxx \
+                         *.hpp \
+                         *.h++ \
+                         *.idl \
+                         *.odl \
+                         *.cs \
+                         *.php \
+                         *.php3 \
+                         *.inc \
+                         *.m \
+                         *.mm \
+                         *.dox \
+                         *.py \
+                         *.C \
+                         *.CC \
+                         *.C++ \
+                         *.II \
+                         *.I++ \
+                         *.H \
+                         *.HH \
+                         *.H++ \
+                         *.CS \
+                         *.PHP \
+                         *.PHP3 \
+                         *.M \
+                         *.MM \
+                         *.PY
+RECURSIVE              = NO
+EXCLUDE                = 
+EXCLUDE_SYMLINKS       = NO
+EXCLUDE_PATTERNS       = 
+EXAMPLE_PATH           = 
+EXAMPLE_PATTERNS       = *
+EXAMPLE_RECURSIVE      = NO
+IMAGE_PATH             = 
+INPUT_FILTER           = 
+FILTER_PATTERNS        = 
+FILTER_SOURCE_FILES    = NO
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+SOURCE_BROWSER         = NO
+INLINE_SOURCES         = NO
+STRIP_CODE_COMMENTS    = YES
+REFERENCED_BY_RELATION = YES
+REFERENCES_RELATION    = YES
+USE_HTAGS              = NO
+VERBATIM_HEADERS       = NO
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+ALPHABETICAL_INDEX     = NO
+COLS_IN_ALPHA_INDEX    = 5
+IGNORE_PREFIX          = 
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+GENERATE_HTML          = YES
+HTML_OUTPUT            = html
+HTML_FILE_EXTENSION    = .html
+HTML_HEADER            = 
+HTML_FOOTER            = 
+HTML_STYLESHEET        = 
+HTML_ALIGN_MEMBERS     = YES
+GENERATE_HTMLHELP      = NO
+CHM_FILE               = 
+HHC_LOCATION           = 
+GENERATE_CHI           = NO
+BINARY_TOC             = NO
+TOC_EXPAND             = NO
+DISABLE_INDEX          = NO
+ENUM_VALUES_PER_LINE   = 4
+GENERATE_TREEVIEW      = YES
+TREEVIEW_WIDTH         = 250
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+GENERATE_LATEX         = NO
+LATEX_OUTPUT           = latex
+LATEX_CMD_NAME         = latex
+MAKEINDEX_CMD_NAME     = makeindex
+COMPACT_LATEX          = NO
+PAPER_TYPE             = a4wide
+EXTRA_PACKAGES         = 
+LATEX_HEADER           = 
+PDF_HYPERLINKS         = NO
+USE_PDFLATEX           = NO
+LATEX_BATCHMODE        = NO
+LATEX_HIDE_INDICES     = NO
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+GENERATE_RTF           = NO
+RTF_OUTPUT             = rtf
+COMPACT_RTF            = NO
+RTF_HYPERLINKS         = NO
+RTF_STYLESHEET_FILE    = 
+RTF_EXTENSIONS_FILE    = 
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+GENERATE_MAN           = NO
+MAN_OUTPUT             = man
+MAN_EXTENSION          = .3
+MAN_LINKS              = NO
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+GENERATE_XML           = NO
+XML_OUTPUT             = xml
+XML_SCHEMA             = 
+XML_DTD                = 
+XML_PROGRAMLISTING     = YES
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+GENERATE_AUTOGEN_DEF   = NO
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+GENERATE_PERLMOD       = NO
+PERLMOD_LATEX          = NO
+PERLMOD_PRETTY         = YES
+PERLMOD_MAKEVAR_PREFIX = 
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor   
+#---------------------------------------------------------------------------
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = NO
+EXPAND_ONLY_PREDEF     = NO
+SEARCH_INCLUDES        = YES
+INCLUDE_PATH           = 
+INCLUDE_FILE_PATTERNS  = 
+PREDEFINED             = DEBUG DEBUG_MEMORY
+EXPAND_AS_DEFINED      = 
+SKIP_FUNCTION_MACROS   = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references   
+#---------------------------------------------------------------------------
+TAGFILES               = 
+GENERATE_TAGFILE       = 
+ALLEXTERNALS           = NO
+EXTERNAL_GROUPS        = YES
+PERL_PATH              = /usr/bin/perl
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool   
+#---------------------------------------------------------------------------
+CLASS_DIAGRAMS         = YES
+HIDE_UNDOC_RELATIONS   = YES
+HAVE_DOT               = NO
+CLASS_GRAPH            = YES
+COLLABORATION_GRAPH    = YES
+GROUP_GRAPHS           = YES
+UML_LOOK               = NO
+TEMPLATE_RELATIONS     = NO
+INCLUDE_GRAPH          = NO
+INCLUDED_BY_GRAPH      = YES
+CALL_GRAPH             = NO
+GRAPHICAL_HIERARCHY    = YES
+DIRECTORY_GRAPH        = YES
+DOT_IMAGE_FORMAT       = png
+DOT_PATH               = 
+DOTFILE_DIRS           = 
+MAX_DOT_GRAPH_DEPTH    = 1000
+DOT_TRANSPARENT        = NO
+DOT_MULTI_TARGETS      = NO
+GENERATE_LEGEND        = YES
+DOT_CLEANUP            = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine   
+#---------------------------------------------------------------------------
+SEARCHENGINE           = NO
diff --git a/drivers/usb/host/dwc_common_port/dwc_cc.c b/drivers/usb/host/dwc_common_port/dwc_cc.c
new file mode 100644
index 0000000..613c901
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_cc.c
@@ -0,0 +1,532 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_cc.c $
+ * $Revision: #4 $
+ * $Date: 2010/11/04 $
+ * $Change: 1621692 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifdef DWC_CCLIB
+
+#include "dwc_cc.h"
+
+typedef struct dwc_cc
+{
+       uint32_t uid;
+       uint8_t chid[16];
+       uint8_t cdid[16];
+       uint8_t ck[16];
+       uint8_t *name;
+       uint8_t length;
+        DWC_CIRCLEQ_ENTRY(dwc_cc) list_entry;
+} dwc_cc_t;
+
+DWC_CIRCLEQ_HEAD(context_list, dwc_cc);
+
+/** The main structure for CC management.  */
+struct dwc_cc_if
+{
+       dwc_mutex_t *mutex;
+       char *filename;
+
+       unsigned is_host:1;
+
+       dwc_notifier_t *notifier;
+
+       struct context_list list;
+};
+
+#ifdef DEBUG
+static inline void dump_bytes(char *name, uint8_t *bytes, int len)
+{
+       int i;
+       DWC_PRINTF("%s: ", name);
+       for (i=0; i<len; i++) {
+               DWC_PRINTF("%02x ", bytes[i]);
+       }
+       DWC_PRINTF("\n");
+}
+#else
+#define dump_bytes(x...)
+#endif
+
+static dwc_cc_t *alloc_cc(void *mem_ctx, uint8_t *name, uint32_t length)
+{
+       dwc_cc_t *cc = dwc_alloc(mem_ctx, sizeof(dwc_cc_t));
+       if (!cc) {
+               return NULL;
+       }
+       DWC_MEMSET(cc, 0, sizeof(dwc_cc_t));
+
+       if (name) {
+               cc->length = length;
+               cc->name = dwc_alloc(mem_ctx, length);
+               if (!cc->name) {
+                       dwc_free(mem_ctx, cc);
+                       return NULL;
+               }
+
+               DWC_MEMCPY(cc->name, name, length);
+       }
+
+       return cc;
+}
+
+static void free_cc(void *mem_ctx, dwc_cc_t *cc)
+{
+       if (cc->name) {
+               dwc_free(mem_ctx, cc->name);
+       }
+       dwc_free(mem_ctx, cc);
+}
+
+static uint32_t next_uid(dwc_cc_if_t *cc_if)
+{
+       uint32_t uid = 0;
+       dwc_cc_t *cc;
+       DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+               if (cc->uid > uid) {
+                       uid = cc->uid;
+               }
+       }
+
+       if (uid == 0) {
+               uid = 255;
+       }
+
+       return uid + 1;
+}
+
+static dwc_cc_t *cc_find(dwc_cc_if_t *cc_if, uint32_t uid)
+{
+       dwc_cc_t *cc;
+       DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+               if (cc->uid == uid) {
+                       return cc;
+               }
+       }
+       return NULL;
+}
+
+static unsigned int cc_data_size(dwc_cc_if_t *cc_if)
+{
+       unsigned int size = 0;
+       dwc_cc_t *cc;
+       DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+               size += (48 + 1);
+               if (cc->name) {
+                       size += cc->length;
+               }
+       }
+       return size;
+}
+
+static uint32_t cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid)
+{
+       uint32_t uid = 0;
+       dwc_cc_t *cc;
+
+       DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+               if (DWC_MEMCMP(cc->chid, chid, 16) == 0) {
+                       uid = cc->uid;
+                       break;
+               }
+       }
+       return uid;
+}
+static uint32_t cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid)
+{
+       uint32_t uid = 0;
+       dwc_cc_t *cc;
+
+       DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+               if (DWC_MEMCMP(cc->cdid, cdid, 16) == 0) {
+                       uid = cc->uid;
+                       break;
+               }
+       }
+       return uid;
+}
+
+/* Internal cc_add */
+static int32_t cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
+                     uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
+{
+       dwc_cc_t *cc;
+       uint32_t uid;
+
+       if (cc_if->is_host) {
+               uid = cc_match_cdid(cc_if, cdid);
+       }
+       else {
+               uid = cc_match_chid(cc_if, chid);
+       }
+
+       if (uid) {
+               DWC_DEBUGC("Replacing previous connection context id=%d name=%p name_len=%d", uid, name, length);
+               cc = cc_find(cc_if, uid);
+       }
+       else {
+               cc = alloc_cc(mem_ctx, name, length);
+               cc->uid = next_uid(cc_if);
+               DWC_CIRCLEQ_INSERT_TAIL(&cc_if->list, cc, list_entry);
+       }
+
+       DWC_MEMCPY(&(cc->chid[0]), chid, 16);
+       DWC_MEMCPY(&(cc->cdid[0]), cdid, 16);
+       DWC_MEMCPY(&(cc->ck[0]), ck, 16);
+
+       DWC_DEBUGC("Added connection context id=%d name=%p name_len=%d", cc->uid, name, length);
+       dump_bytes("CHID", cc->chid, 16);
+       dump_bytes("CDID", cc->cdid, 16);
+       dump_bytes("CK", cc->ck, 16);
+       return cc->uid;
+}
+
+/* Internal cc_clear */
+static void cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if)
+{
+       while (!DWC_CIRCLEQ_EMPTY(&cc_if->list)) {
+               dwc_cc_t *cc = DWC_CIRCLEQ_FIRST(&cc_if->list);
+               DWC_CIRCLEQ_REMOVE_INIT(&cc_if->list, cc, list_entry);
+               free_cc(mem_ctx, cc);
+       }
+}
+
+dwc_cc_if_t *dwc_cc_if_alloc(void *mem_ctx, void *mtx_ctx, 
+                            dwc_notifier_t *notifier, unsigned is_host)
+{
+       dwc_cc_if_t *cc_if = NULL;
+
+       /* Allocate a common_cc_if structure */
+       cc_if = dwc_alloc(mem_ctx, sizeof(dwc_cc_if_t));
+
+       if (!cc_if)
+               return NULL;
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+       DWC_MUTEX_ALLOC_LINUX_DEBUG(cc_if->mutex);
+#else
+       cc_if->mutex = dwc_mutex_alloc(mtx_ctx);
+#endif
+       if (!cc_if->mutex) {
+               dwc_free(mem_ctx, cc_if);
+               return NULL;
+       }
+
+       DWC_CIRCLEQ_INIT(&cc_if->list);
+       cc_if->is_host = is_host;
+       cc_if->notifier = notifier;
+       return cc_if;
+}
+
+void dwc_cc_if_free(void *mem_ctx, void *mtx_ctx, dwc_cc_if_t *cc_if)
+{
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+       DWC_MUTEX_FREE(cc_if->mutex);
+#else
+       dwc_mutex_free(mtx_ctx, cc_if->mutex);
+#endif
+       cc_clear(mem_ctx, cc_if);
+       dwc_free(mem_ctx, cc_if);
+}
+
+static void cc_changed(dwc_cc_if_t *cc_if)
+{
+       if (cc_if->notifier) {
+               dwc_notify(cc_if->notifier, DWC_CC_LIST_CHANGED_NOTIFICATION, cc_if);
+       }
+}
+
+void dwc_cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if)
+{
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc_clear(mem_ctx, cc_if);
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+       cc_changed(cc_if);
+}
+
+int32_t dwc_cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
+                  uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
+{
+       uint32_t uid;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       uid = cc_add(mem_ctx, cc_if, chid, cdid, ck, name, length);
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+       cc_changed(cc_if);
+
+       return uid;
+}
+
+void dwc_cc_change(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id, uint8_t *chid,
+                  uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
+{
+       dwc_cc_t* cc;
+
+       DWC_DEBUGC("Change connection context %d", id);
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc = cc_find(cc_if, id);
+       if (!cc) {
+               DWC_ERROR("Uid %d not found in cc list\n", id);
+               DWC_MUTEX_UNLOCK(cc_if->mutex);
+               return;
+       }
+
+       if (chid) {
+               DWC_MEMCPY(&(cc->chid[0]), chid, 16);
+       }
+       if (cdid) {
+               DWC_MEMCPY(&(cc->cdid[0]), cdid, 16);
+       }
+       if (ck) {
+               DWC_MEMCPY(&(cc->ck[0]), ck, 16);
+       }
+
+       if (name) {
+               if (cc->name) {
+                       dwc_free(mem_ctx, cc->name);
+               }
+               cc->name = dwc_alloc(mem_ctx, length);
+               if (!cc->name) {
+                       DWC_ERROR("Out of memory in dwc_cc_change()\n");
+                       DWC_MUTEX_UNLOCK(cc_if->mutex);
+                       return;
+               }
+               cc->length = length;
+               DWC_MEMCPY(cc->name, name, length);
+       }
+
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       cc_changed(cc_if);
+
+       DWC_DEBUGC("Changed connection context id=%d\n", id);
+       dump_bytes("New CHID", cc->chid, 16);
+       dump_bytes("New CDID", cc->cdid, 16);
+       dump_bytes("New CK", cc->ck, 16);
+}
+
+void dwc_cc_remove(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id)
+{
+       dwc_cc_t *cc;
+
+       DWC_DEBUGC("Removing connection context %d", id);
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc = cc_find(cc_if, id);
+       if (!cc) {
+               DWC_ERROR("Uid %d not found in cc list\n", id);
+               DWC_MUTEX_UNLOCK(cc_if->mutex);
+               return;
+       }
+
+       DWC_CIRCLEQ_REMOVE_INIT(&cc_if->list, cc, list_entry);
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+       free_cc(mem_ctx, cc);
+
+       cc_changed(cc_if);
+}
+
+uint8_t *dwc_cc_data_for_save(void *mem_ctx, dwc_cc_if_t *cc_if, unsigned int *length)
+{
+       uint8_t *buf, *x;
+       uint8_t zero = 0;
+       dwc_cc_t *cc;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       *length = cc_data_size(cc_if);
+       if (!(*length)) {
+               DWC_MUTEX_UNLOCK(cc_if->mutex);
+               return NULL;
+       }
+
+       DWC_DEBUGC("Creating data for saving (length=%d)", *length);
+
+       buf = dwc_alloc(mem_ctx, *length);
+       if (!buf) {
+               *length = 0;
+               DWC_MUTEX_UNLOCK(cc_if->mutex);
+               return NULL;
+       }
+
+       x = buf;
+       DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+               DWC_MEMCPY(x, cc->chid, 16);
+               x += 16;
+               DWC_MEMCPY(x, cc->cdid, 16);
+               x += 16;
+               DWC_MEMCPY(x, cc->ck, 16);
+               x += 16;
+               if (cc->name) {
+                       DWC_MEMCPY(x, &cc->length, 1);
+                       x += 1;
+                       DWC_MEMCPY(x, cc->name, cc->length);
+                       x += cc->length;
+               }
+               else {
+                       DWC_MEMCPY(x, &zero, 1);
+                       x += 1;
+               }
+       }
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       return buf;
+}
+
+void dwc_cc_restore_from_data(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *data, uint32_t length)
+{
+       uint8_t name_length;
+       uint8_t *name;
+       uint8_t *chid;
+       uint8_t *cdid;
+       uint8_t *ck;
+       uint32_t i = 0;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc_clear(mem_ctx, cc_if);
+
+       while (i < length) {
+               chid = &data[i];
+               i += 16;
+               cdid = &data[i];
+               i += 16;
+               ck = &data[i];
+               i += 16;
+
+               name_length = data[i];
+               i ++;
+
+               if (name_length) {
+                       name = &data[i];
+                       i += name_length;
+               }
+               else {
+                       name = NULL;
+               }
+
+               /* check to see if we haven't overflown the buffer */
+               if (i > length) {
+                       DWC_ERROR("Data format error while attempting to load CCs "
+                                 "(nlen=%d, iter=%d, buflen=%d).\n", name_length, i, length);
+                       break;
+               }
+
+               cc_add(mem_ctx, cc_if, chid, cdid, ck, name, name_length);
+       }
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       cc_changed(cc_if);
+}
+
+uint32_t dwc_cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid)
+{
+       uint32_t uid = 0;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       uid = cc_match_chid(cc_if, chid);
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+       return uid;
+}
+uint32_t dwc_cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid)
+{
+       uint32_t uid = 0;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       uid = cc_match_cdid(cc_if, cdid);
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+       return uid;
+}
+
+uint8_t *dwc_cc_ck(dwc_cc_if_t *cc_if, int32_t id)
+{
+       uint8_t *ck = NULL;
+       dwc_cc_t *cc;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc = cc_find(cc_if, id);
+       if (cc) {
+               ck = cc->ck;
+       }
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       return ck;
+
+}
+
+uint8_t *dwc_cc_chid(dwc_cc_if_t *cc_if, int32_t id)
+{
+       uint8_t *retval = NULL;
+       dwc_cc_t *cc;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc = cc_find(cc_if, id);
+       if (cc) {
+               retval = cc->chid;
+       }
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       return retval;
+}
+
+uint8_t *dwc_cc_cdid(dwc_cc_if_t *cc_if, int32_t id)
+{
+       uint8_t *retval = NULL;
+       dwc_cc_t *cc;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       cc = cc_find(cc_if, id);
+       if (cc) {
+               retval = cc->cdid;
+       }
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       return retval;
+}
+
+uint8_t *dwc_cc_name(dwc_cc_if_t *cc_if, int32_t id, uint8_t *length)
+{
+       uint8_t *retval = NULL;
+       dwc_cc_t *cc;
+
+       DWC_MUTEX_LOCK(cc_if->mutex);
+       *length = 0;
+       cc = cc_find(cc_if, id);
+       if (cc) {
+               *length = cc->length;
+               retval = cc->name;
+       }
+       DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+       return retval;
+}
+
+#endif /* DWC_CCLIB */
diff --git a/drivers/usb/host/dwc_common_port/dwc_cc.h b/drivers/usb/host/dwc_common_port/dwc_cc.h
new file mode 100644
index 0000000..6b2bbaf
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_cc.h
@@ -0,0 +1,225 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_cc.h $
+ * $Revision: #4 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifndef _DWC_CC_H_
+#define _DWC_CC_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * This file defines the Context Context library.
+ *
+ * The main data structure is dwc_cc_if_t which is returned by either the
+ * dwc_cc_if_alloc function or returned by the module to the user via a provided
+ * function. The data structure is opaque and should only be manipulated via the
+ * functions provied in this API.
+ *
+ * It manages a list of connection contexts and operations can be performed to
+ * add, remove, query, search, and change, those contexts.  Additionally,
+ * a dwc_notifier_t object can be requested from the manager so that
+ * the user can be notified whenever the context list has changed.
+ */
+
+#include "dwc_os.h"
+#include "dwc_list.h"
+#include "dwc_notifier.h"
+
+
+/* Notifications */
+#define DWC_CC_LIST_CHANGED_NOTIFICATION "DWC_CC_LIST_CHANGED_NOTIFICATION"
+
+struct dwc_cc_if;
+typedef struct dwc_cc_if dwc_cc_if_t;
+
+
+/** @name Connection Context Operations */
+/** @{ */
+
+/** This function allocates memory for a dwc_cc_if_t structure, initializes
+ * fields to default values, and returns a pointer to the structure or NULL on
+ * error. */
+extern dwc_cc_if_t *dwc_cc_if_alloc(void *mem_ctx, void *mtx_ctx,
+                                   dwc_notifier_t *notifier, unsigned is_host);
+
+/** Frees the memory for the specified CC structure allocated from
+ * dwc_cc_if_alloc(). */
+extern void dwc_cc_if_free(void *mem_ctx, void *mtx_ctx, dwc_cc_if_t *cc_if);
+
+/** Removes all contexts from the connection context list */
+extern void dwc_cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if);
+
+/** Adds a connection context (CHID, CK, CDID, Name) to the connection context list.
+ * If a CHID already exists, the CK and name are overwritten.  Statistics are
+ * not overwritten.
+ *
+ * @param cc_if The cc_if structure.
+ * @param chid A pointer to the 16-byte CHID.  This value will be copied.
+ * @param ck A pointer to the 16-byte CK.  This value will be copied.
+ * @param cdid A pointer to the 16-byte CDID.  This value will be copied.
+ * @param name An optional host friendly name as defined in the association model
+ * spec.  Must be a UTF16-LE unicode string.  Can be NULL to indicated no name.
+ * @param length The length othe unicode string.
+ * @return A unique identifier used to refer to this context that is valid for
+ * as long as this context is still in the list. */
+extern int32_t dwc_cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
+                         uint8_t *cdid, uint8_t *ck, uint8_t *name,
+                         uint8_t length);
+
+/** Changes the CHID, CK, CDID, or Name values of a connection context in the
+ * list, preserving any accumulated statistics.  This would typically be called
+ * if the host decideds to change the context with a SET_CONNECTION request.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @param chid A pointer to the 16-byte CHID.  This value will be copied.  NULL
+ * indicates no change.
+ * @param cdid A pointer to the 16-byte CDID.  This value will be copied.  NULL
+ * indicates no change.
+ * @param ck A pointer to the 16-byte CK.  This value will be copied.  NULL
+ * indicates no change.
+ * @param name Host friendly name UTF16-LE.  NULL indicates no change.
+ * @param length Length of name. */
+extern void dwc_cc_change(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id,
+                         uint8_t *chid, uint8_t *cdid, uint8_t *ck,
+                         uint8_t *name, uint8_t length);
+
+/** Remove the specified connection context.
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context to remove. */
+extern void dwc_cc_remove(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id);
+
+/** Get a binary block of data for the connection context list and attributes.
+ * This data can be used by the OS specific driver to save the connection
+ * context list into non-volatile memory.
+ *
+ * @param cc_if The cc_if structure.
+ * @param length Return the length of the data buffer.
+ * @return A pointer to the data buffer.  The memory for this buffer should be
+ * freed with DWC_FREE() after use. */
+extern uint8_t *dwc_cc_data_for_save(void *mem_ctx, dwc_cc_if_t *cc_if,
+                                    unsigned int *length);
+
+/** Restore the connection context list from the binary data that was previously
+ * returned from a call to dwc_cc_data_for_save.  This can be used by the OS specific
+ * driver to load a connection context list from non-volatile memory.
+ *
+ * @param cc_if The cc_if structure.
+ * @param data The data bytes as returned from dwc_cc_data_for_save.
+ * @param length The length of the data. */
+extern void dwc_cc_restore_from_data(void *mem_ctx, dwc_cc_if_t *cc_if,
+                                    uint8_t *data, unsigned int length);
+
+/** Find the connection context from the specified CHID.
+ *
+ * @param cc_if The cc_if structure.
+ * @param chid A pointer to the CHID data.
+ * @return A non-zero identifier of the connection context if the CHID matches.
+ * Otherwise returns 0. */
+extern uint32_t dwc_cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid);
+
+/** Find the connection context from the specified CDID.
+ *
+ * @param cc_if The cc_if structure.
+ * @param cdid A pointer to the CDID data.
+ * @return A non-zero identifier of the connection context if the CHID matches.
+ * Otherwise returns 0. */
+extern uint32_t dwc_cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid);
+
+/** Retrieve the CK from the specified connection context.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @return A pointer to the CK data.  The memory does not need to be freed. */
+extern uint8_t *dwc_cc_ck(dwc_cc_if_t *cc_if, int32_t id);
+
+/** Retrieve the CHID from the specified connection context.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @return A pointer to the CHID data.  The memory does not need to be freed. */
+extern uint8_t *dwc_cc_chid(dwc_cc_if_t *cc_if, int32_t id);
+
+/** Retrieve the CDID from the specified connection context.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @return A pointer to the CDID data.  The memory does not need to be freed. */
+extern uint8_t *dwc_cc_cdid(dwc_cc_if_t *cc_if, int32_t id);
+
+extern uint8_t *dwc_cc_name(dwc_cc_if_t *cc_if, int32_t id, uint8_t *length);
+
+/** Checks a buffer for non-zero.
+ * @param id A pointer to a 16 byte buffer. 
+ * @return true if the 16 byte value is non-zero. */
+static inline unsigned dwc_assoc_is_not_zero_id(uint8_t *id) {
+       int i;
+       for (i=0; i<16; i++) {
+               if (id[i]) return 1;
+       }
+       return 0;
+}
+
+/** Checks a buffer for zero.
+ * @param id A pointer to a 16 byte buffer. 
+ * @return true if the 16 byte value is zero. */
+static inline unsigned dwc_assoc_is_zero_id(uint8_t *id) {
+       return !dwc_assoc_is_not_zero_id(id);
+}
+
+/** Prints an ASCII representation for the 16-byte chid, cdid, or ck, into
+ * buffer. */
+static inline int dwc_print_id_string(char *buffer, uint8_t *id) {
+       char *ptr = buffer;
+       int i;
+       for (i=0; i<16; i++) {
+               ptr += DWC_SPRINTF(ptr, "%02x", id[i]);
+               if (i < 15) {
+                       ptr += DWC_SPRINTF(ptr, " ");
+               }
+       }
+       return ptr - buffer;
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_CC_H_ */
+
diff --git a/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c b/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c
new file mode 100644
index 0000000..6dd04b5
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c
@@ -0,0 +1,1308 @@
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+#ifdef DWC_CCLIB
+# include "dwc_cc.h"
+#endif
+
+#ifdef DWC_CRYPTOLIB
+# include "dwc_modpow.h"
+# include "dwc_dh.h"
+# include "dwc_crypto.h"
+#endif
+
+#ifdef DWC_NOTIFYLIB
+# include "dwc_notifier.h"
+#endif
+
+/* OS-Level Implementations */
+
+/* This is the FreeBSD 7.0 kernel implementation of the DWC platform library. */
+
+
+/* MISC */
+
+void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
+{
+       return memset(dest, byte, size);
+}
+
+void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
+{
+       return memcpy(dest, src, size);
+}
+
+void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
+{
+       bcopy(src, dest, size);
+       return dest;
+}
+
+int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
+{
+       return memcmp(m1, m2, size);
+}
+
+int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
+{
+       return strncmp(s1, s2, size);
+}
+
+int DWC_STRCMP(void *s1, void *s2)
+{
+       return strcmp(s1, s2);
+}
+
+int DWC_STRLEN(char const *str)
+{
+       return strlen(str);
+}
+
+char *DWC_STRCPY(char *to, char const *from)
+{
+       return strcpy(to, from);
+}
+
+char *DWC_STRDUP(char const *str)
+{
+       int len = DWC_STRLEN(str) + 1;
+       char *new = DWC_ALLOC_ATOMIC(len);
+
+       if (!new) {
+               return NULL;
+       }
+
+       DWC_MEMCPY(new, str, len);
+       return new;
+}
+
+int DWC_ATOI(char *str, int32_t *value)
+{
+       char *end = NULL;
+
+       *value = strtol(str, &end, 0);
+       if (*end == '\0') {
+               return 0;
+       }
+
+       return -1;
+}
+
+int DWC_ATOUI(char *str, uint32_t *value)
+{
+       char *end = NULL;
+
+       *value = strtoul(str, &end, 0);
+       if (*end == '\0') {
+               return 0;
+       }
+
+       return -1;
+}
+
+
+#ifdef DWC_UTFLIB
+/* From usbstring.c */
+
+int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
+{
+       int     count = 0;
+       u8      c;
+       u16     uchar;
+
+       /* this insists on correct encodings, though not minimal ones.
+        * BUT it currently rejects legit 4-byte UTF-8 code points,
+        * which need surrogate pairs.  (Unicode 3.1 can use them.)
+        */
+       while (len != 0 && (c = (u8) *s++) != 0) {
+               if (unlikely(c & 0x80)) {
+                       // 2-byte sequence:
+                       // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+                       if ((c & 0xe0) == 0xc0) {
+                               uchar = (c & 0x1f) << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                       // 3-byte sequence (most CJKV characters):
+                       // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+                       } else if ((c & 0xf0) == 0xe0) {
+                               uchar = (c & 0x0f) << 12;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                               /* no bogus surrogates */
+                               if (0xd800 <= uchar && uchar <= 0xdfff)
+                                       goto fail;
+
+                       // 4-byte sequence (surrogate pairs, currently rare):
+                       // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+                       //     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+                       // (uuuuu = wwww + 1)
+                       // FIXME accept the surrogate code points (only)
+                       } else
+                               goto fail;
+               } else
+                       uchar = c;
+               put_unaligned (cpu_to_le16 (uchar), cp++);
+               count++;
+               len--;
+       }
+       return count;
+fail:
+       return -1;
+}
+
+#endif /* DWC_UTFLIB */
+
+
+/* dwc_debug.h */
+
+dwc_bool_t DWC_IN_IRQ(void)
+{
+//     return in_irq();
+       return 0;
+}
+
+dwc_bool_t DWC_IN_BH(void)
+{
+//     return in_softirq();
+       return 0;
+}
+
+void DWC_VPRINTF(char *format, va_list args)
+{
+       vprintf(format, args);
+}
+
+int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
+{
+       return vsnprintf(str, size, format, args);
+}
+
+void DWC_PRINTF(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+int DWC_SPRINTF(char *buffer, char *format, ...)
+{
+       int retval;
+       va_list args;
+
+       va_start(args, format);
+       retval = vsprintf(buffer, format, args);
+       va_end(args);
+       return retval;
+}
+
+int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
+{
+       int retval;
+       va_list args;
+
+       va_start(args, format);
+       retval = vsnprintf(buffer, size, format, args);
+       va_end(args);
+       return retval;
+}
+
+void __DWC_WARN(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+void __DWC_ERROR(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+void DWC_EXCEPTION(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+//     BUG_ON(1);      ???
+}
+
+#ifdef DEBUG
+void __DWC_DEBUG(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+#endif
+
+
+/* dwc_mem.h */
+
+#if 0
+dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
+                               uint32_t align,
+                               uint32_t alloc)
+{
+       struct dma_pool *pool = dma_pool_create("Pool", NULL,
+                                               size, align, alloc);
+       return (dwc_pool_t *)pool;
+}
+
+void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
+{
+       dma_pool_destroy((struct dma_pool *)pool);
+}
+
+void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+//     return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
+       return dma_pool_alloc((struct dma_pool *)pool, M_WAITOK, dma_addr);
+}
+
+void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+       void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
+       memset(..);
+}
+
+void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
+{
+       dma_pool_free(pool, vaddr, daddr);
+}
+#endif
+
+static void dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+       if (error)
+               return;
+       *(bus_addr_t *)arg = segs[0].ds_addr;
+}
+
+void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+       dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+       int error;
+
+       error = bus_dma_tag_create(
+#if __FreeBSD_version >= 700000
+                       bus_get_dma_tag(dma->dev),      /* parent */
+#else
+                       NULL,                           /* parent */
+#endif
+                       4, 0,                           /* alignment, bounds */
+                       BUS_SPACE_MAXADDR_32BIT,        /* lowaddr */
+                       BUS_SPACE_MAXADDR,              /* highaddr */
+                       NULL, NULL,                     /* filter, filterarg */
+                       size,                           /* maxsize */
+                       1,                              /* nsegments */
+                       size,                           /* maxsegsize */
+                       0,                              /* flags */
+                       NULL,                           /* lockfunc */
+                       NULL,                           /* lockarg */
+                       &dma->dma_tag);
+       if (error) {
+               device_printf(dma->dev, "%s: bus_dma_tag_create failed: %d\n",
+                             __func__, error);
+               goto fail_0;
+       }
+
+       error = bus_dmamem_alloc(dma->dma_tag, &dma->dma_vaddr,
+                                BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map);
+       if (error) {
+               device_printf(dma->dev, "%s: bus_dmamem_alloc(%ju) failed: %d\n",
+                             __func__, (uintmax_t)size, error);
+               goto fail_1;
+       }
+
+       dma->dma_paddr = 0;
+       error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, size,
+                               dmamap_cb, &dma->dma_paddr, BUS_DMA_NOWAIT);
+       if (error || dma->dma_paddr == 0) {
+               device_printf(dma->dev, "%s: bus_dmamap_load failed: %d\n",
+                             __func__, error);
+               goto fail_2;
+       }
+
+       *dma_addr = dma->dma_paddr;
+       return dma->dma_vaddr;
+
+fail_2:
+       bus_dmamap_unload(dma->dma_tag, dma->dma_map);
+fail_1:
+       bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
+       bus_dma_tag_destroy(dma->dma_tag);
+fail_0:
+       dma->dma_map = NULL;
+       dma->dma_tag = NULL;
+
+       return NULL;
+}
+
+void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
+{
+       dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+
+       if (dma->dma_tag == NULL)
+               return;
+       if (dma->dma_map != NULL) {
+               bus_dmamap_sync(dma->dma_tag, dma->dma_map,
+                               BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
+               bus_dmamap_unload(dma->dma_tag, dma->dma_map);
+               bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
+               dma->dma_map = NULL;
+       }
+
+       bus_dma_tag_destroy(dma->dma_tag);
+       dma->dma_tag = NULL;
+}
+
+void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
+{
+       return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
+}
+
+void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
+{
+       return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
+}
+
+void __DWC_FREE(void *mem_ctx, void *addr)
+{
+       free(addr, M_DEVBUF);
+}
+
+
+#ifdef DWC_CRYPTOLIB
+/* dwc_crypto.h */
+
+void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
+{
+       get_random_bytes(buffer, length);
+}
+
+int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
+{
+       struct crypto_blkcipher *tfm;
+       struct blkcipher_desc desc;
+       struct scatterlist sgd;
+       struct scatterlist sgs;
+
+       tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+       if (tfm == NULL) {
+               printk("failed to load transform for aes CBC\n");
+               return -1;
+       }
+
+       crypto_blkcipher_setkey(tfm, key, keylen);
+       crypto_blkcipher_set_iv(tfm, iv, 16);
+
+       sg_init_one(&sgd, out, messagelen);
+       sg_init_one(&sgs, message, messagelen);
+
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
+               crypto_free_blkcipher(tfm);
+               DWC_ERROR("AES CBC encryption failed");
+               return -1;
+       }
+
+       crypto_free_blkcipher(tfm);
+       return 0;
+}
+
+int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
+{
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
+       struct scatterlist sg;
+
+       tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               DWC_ERROR("Failed to load transform for sha256: %ld", PTR_ERR(tfm));
+               return 0;
+       }
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       sg_init_one(&sg, message, len);
+       crypto_hash_digest(&desc, &sg, len, out);
+       crypto_free_hash(tfm);
+
+       return 1;
+}
+
+int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
+                   uint8_t *key, uint32_t keylen, uint8_t *out)
+{
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
+       struct scatterlist sg;
+
+       tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               DWC_ERROR("Failed to load transform for hmac(sha256): %ld", PTR_ERR(tfm));
+               return 0;
+       }
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       sg_init_one(&sg, message, messagelen);
+       crypto_hash_setkey(tfm, key, keylen);
+       crypto_hash_digest(&desc, &sg, messagelen, out);
+       crypto_free_hash(tfm);
+
+       return 1;
+}
+
+#endif /* DWC_CRYPTOLIB */
+
+
+/* Byte Ordering Conversions */
+
+uint32_t DWC_CPU_TO_LE32(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_CPU_TO_BE32(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_LE32_TO_CPU(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_BE32_TO_CPU(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint16_t DWC_CPU_TO_LE16(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_CPU_TO_BE16(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_LE16_TO_CPU(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_BE16_TO_CPU(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+
+/* Registers */
+
+uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       return bus_space_read_4(io->iot, io->ioh, ior);
+}
+
+#if 0
+uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       return bus_space_read_8(io->iot, io->ioh, ior);
+}
+#endif
+
+void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_4(io->iot, io->ioh, ior, value);
+}
+
+#if 0
+void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_8(io->iot, io->ioh, ior, value);
+}
+#endif
+
+void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask,
+                     uint32_t set_mask)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_4(io->iot, io->ioh, ior,
+                         (bus_space_read_4(io->iot, io->ioh, ior) &
+                          ~clear_mask) | set_mask);
+}
+
+#if 0
+void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask,
+                     uint64_t set_mask)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_8(io->iot, io->ioh, ior,
+                         (bus_space_read_8(io->iot, io->ioh, ior) &
+                          ~clear_mask) | set_mask);
+}
+#endif
+
+
+/* Locking */
+
+dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
+{
+       struct mtx *sl = DWC_ALLOC(sizeof(*sl));
+
+       if (!sl) {
+               DWC_ERROR("Cannot allocate memory for spinlock");
+               return NULL;
+       }
+
+       mtx_init(sl, "dw3spn", NULL, MTX_SPIN);
+       return (dwc_spinlock_t *)sl;
+}
+
+void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
+{
+       struct mtx *sl = (struct mtx *)lock;
+
+       mtx_destroy(sl);
+       DWC_FREE(sl);
+}
+
+void DWC_SPINLOCK(dwc_spinlock_t *lock)
+{
+       mtx_lock_spin((struct mtx *)lock);      // ???
+}
+
+void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
+{
+       mtx_unlock_spin((struct mtx *)lock);    // ???
+}
+
+void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
+{
+       mtx_lock_spin((struct mtx *)lock);
+}
+
+void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
+{
+       mtx_unlock_spin((struct mtx *)lock);
+}
+
+dwc_mutex_t *DWC_MUTEX_ALLOC(void)
+{
+       struct mtx *m;
+       dwc_mutex_t *mutex = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mtx));
+
+       if (!mutex) {
+               DWC_ERROR("Cannot allocate memory for mutex");
+               return NULL;
+       }
+
+       m = (struct mtx *)mutex;
+       mtx_init(m, "dw3mtx", NULL, MTX_DEF);
+       return mutex;
+}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+#else
+void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
+{
+       mtx_destroy((struct mtx *)mutex);
+       DWC_FREE(mutex);
+}
+#endif
+
+void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
+{
+       struct mtx *m = (struct mtx *)mutex;
+
+       mtx_lock(m);
+}
+
+int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
+{
+       struct mtx *m = (struct mtx *)mutex;
+
+       return mtx_trylock(m);
+}
+
+void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
+{
+       struct mtx *m = (struct mtx *)mutex;
+
+       mtx_unlock(m);
+}
+
+
+/* Timing */
+
+void DWC_UDELAY(uint32_t usecs)
+{
+       DELAY(usecs);
+}
+
+void DWC_MDELAY(uint32_t msecs)
+{
+       do {
+               DELAY(1000);
+       } while (--msecs);
+}
+
+void DWC_MSLEEP(uint32_t msecs)
+{
+       struct timeval tv;
+
+       tv.tv_sec = msecs / 1000;
+       tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+       pause("dw3slp", tvtohz(&tv));
+}
+
+uint32_t DWC_TIME(void)
+{
+       struct timeval tv;
+
+       microuptime(&tv);       // or getmicrouptime? (less precise, but faster)
+       return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+
+/* Timers */
+
+struct dwc_timer {
+       struct callout t;
+       char *name;
+       dwc_spinlock_t *lock;
+       dwc_timer_callback_t cb;
+       void *data;
+};
+
+dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
+{
+       dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
+
+       if (!t) {
+               DWC_ERROR("Cannot allocate memory for timer");
+               return NULL;
+       }
+
+       callout_init(&t->t, 1);
+
+       t->name = DWC_STRDUP(name);
+       if (!t->name) {
+               DWC_ERROR("Cannot allocate memory for timer->name");
+               goto no_name;
+       }
+
+       t->lock = DWC_SPINLOCK_ALLOC();
+       if (!t->lock) {
+               DWC_ERROR("Cannot allocate memory for lock");
+               goto no_lock;
+       }
+
+       t->cb = cb;
+       t->data = data;
+
+       return t;
+
+ no_lock:
+       DWC_FREE(t->name);
+ no_name:
+       DWC_FREE(t);
+
+       return NULL;
+}
+
+void DWC_TIMER_FREE(dwc_timer_t *timer)
+{
+       callout_stop(&timer->t);
+       DWC_SPINLOCK_FREE(timer->lock);
+       DWC_FREE(timer->name);
+       DWC_FREE(timer);
+}
+
+void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
+{
+       struct timeval tv;
+
+       tv.tv_sec = time / 1000;
+       tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+       callout_reset(&timer->t, tvtohz(&tv), timer->cb, timer->data);
+}
+
+void DWC_TIMER_CANCEL(dwc_timer_t *timer)
+{
+       callout_stop(&timer->t);
+}
+
+
+/* Wait Queues */
+
+struct dwc_waitq {
+       struct mtx lock;
+       int abort;
+};
+
+dwc_waitq_t *DWC_WAITQ_ALLOC(void)
+{
+       dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+       if (!wq) {
+               DWC_ERROR("Cannot allocate memory for waitqueue");
+               return NULL;
+       }
+
+       mtx_init(&wq->lock, "dw3wtq", NULL, MTX_DEF);
+       wq->abort = 0;
+
+       return wq;
+}
+
+void DWC_WAITQ_FREE(dwc_waitq_t *wq)
+{
+       mtx_destroy(&wq->lock);
+       DWC_FREE(wq);
+}
+
+int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
+{
+//     intrmask_t ipl;
+       int result = 0;
+
+       mtx_lock(&wq->lock);
+//     ipl = splbio();
+
+       /* Skip the sleep if already aborted or triggered */
+       if (!wq->abort && !cond(data)) {
+//             splx(ipl);
+               result = msleep(wq, &wq->lock, PCATCH, "dw3wat", 0); // infinite timeout
+//             ipl = splbio();
+       }
+
+       if (result == ERESTART) {       // signaled - restart
+               result = -DWC_E_RESTART;
+
+       } else if (result == EINTR) {   // signaled - interrupt
+               result = -DWC_E_ABORT;
+
+       } else if (wq->abort) {
+               result = -DWC_E_ABORT;
+
+       } else {
+               result = 0;
+       }
+
+       wq->abort = 0;
+//     splx(ipl);
+       mtx_unlock(&wq->lock);
+       return result;
+}
+
+int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+                              void *data, int32_t msecs)
+{
+       struct timeval tv, tv1, tv2;
+//     intrmask_t ipl;
+       int result = 0;
+
+       tv.tv_sec = msecs / 1000;
+       tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+
+       mtx_lock(&wq->lock);
+//     ipl = splbio();
+
+       /* Skip the sleep if already aborted or triggered */
+       if (!wq->abort && !cond(data)) {
+//             splx(ipl);
+               getmicrouptime(&tv1);
+               result = msleep(wq, &wq->lock, PCATCH, "dw3wto", tvtohz(&tv));
+               getmicrouptime(&tv2);
+//             ipl = splbio();
+       }
+
+       if (result == 0) {                      // awoken
+               if (wq->abort) {
+                       result = -DWC_E_ABORT;
+               } else {
+                       tv2.tv_usec -= tv1.tv_usec;
+                       if (tv2.tv_usec < 0) {
+                               tv2.tv_usec += 1000000;
+                               tv2.tv_sec--;
+                       }
+
+                       tv2.tv_sec -= tv1.tv_sec;
+                       result = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
+                       result = msecs - result;
+                       if (result <= 0)
+                               result = 1;
+               }
+       } else if (result == ERESTART) {        // signaled - restart
+               result = -DWC_E_RESTART;
+
+       } else if (result == EINTR) {           // signaled - interrupt
+               result = -DWC_E_ABORT;
+
+       } else {                                // timed out
+               result = -DWC_E_TIMEOUT;
+       }
+
+       wq->abort = 0;
+//     splx(ipl);
+       mtx_unlock(&wq->lock);
+       return result;
+}
+
+void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
+{
+       wakeup(wq);
+}
+
+void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
+{
+//     intrmask_t ipl;
+
+       mtx_lock(&wq->lock);
+//     ipl = splbio();
+       wq->abort = 1;
+       wakeup(wq);
+//     splx(ipl);
+       mtx_unlock(&wq->lock);
+}
+
+
+/* Threading */
+
+struct dwc_thread {
+       struct proc *proc;
+       int abort;
+};
+
+dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
+{
+       int retval;
+       dwc_thread_t *thread = DWC_ALLOC(sizeof(*thread));
+
+       if (!thread) {
+               return NULL;
+       }
+
+       thread->abort = 0;
+       retval = kthread_create((void (*)(void *))func, data, &thread->proc,
+                               RFPROC | RFNOWAIT, 0, "%s", name);
+       if (retval) {
+               DWC_FREE(thread);
+               return NULL;
+       }
+
+       return thread;
+}
+
+int DWC_THREAD_STOP(dwc_thread_t *thread)
+{
+       int retval;
+
+       thread->abort = 1;
+       retval = tsleep(&thread->abort, 0, "dw3stp", 60 * hz);
+
+       if (retval == 0) {
+               /* DWC_THREAD_EXIT() will free the thread struct */
+               return 0;
+       }
+
+       /* NOTE: We leak the thread struct if thread doesn't die */
+
+       if (retval == EWOULDBLOCK) {
+               return -DWC_E_TIMEOUT;
+       }
+
+       return -DWC_E_UNKNOWN;
+}
+
+dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread)
+{
+       return thread->abort;
+}
+
+void DWC_THREAD_EXIT(dwc_thread_t *thread)
+{
+       wakeup(&thread->abort);
+       DWC_FREE(thread);
+       kthread_exit(0);
+}
+
+
+/* tasklets
+ - Runs in interrupt context (cannot sleep)
+ - Each tasklet runs on a single CPU [ How can we ensure this on FreeBSD? Does it matter? ]
+ - Different tasklets can be running simultaneously on different CPUs [ shouldn't matter ]
+ */
+struct dwc_tasklet {
+       struct task t;
+       dwc_tasklet_callback_t cb;
+       void *data;
+};
+
+static void tasklet_callback(void *data, int pending)  // what to do with pending ???
+{
+       dwc_tasklet_t *task = (dwc_tasklet_t *)data;
+
+       task->cb(task->data);
+}
+
+dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
+{
+       dwc_tasklet_t *task = DWC_ALLOC(sizeof(*task));
+
+       if (task) {
+               task->cb = cb;
+               task->data = data;
+               TASK_INIT(&task->t, 0, tasklet_callback, task);
+       } else {
+               DWC_ERROR("Cannot allocate memory for tasklet");
+       }
+
+       return task;
+}
+
+void DWC_TASK_FREE(dwc_tasklet_t *task)
+{
+       taskqueue_drain(taskqueue_fast, &task->t);      // ???
+       DWC_FREE(task);
+}
+
+void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
+{
+       /* Uses predefined system queue */
+       taskqueue_enqueue_fast(taskqueue_fast, &task->t);
+}
+
+
+/* workqueues
+ - Runs in process context (can sleep)
+ */
+typedef struct work_container {
+       dwc_work_callback_t cb;
+       void *data;
+       dwc_workq_t *wq;
+       char *name;
+       int hz;
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_ENTRY(work_container) entry;
+#endif
+       struct task task;
+} work_container_t;
+
+#ifdef DEBUG
+DWC_CIRCLEQ_HEAD(work_container_queue, work_container);
+#endif
+
+struct dwc_workq {
+       struct taskqueue *taskq;
+       dwc_spinlock_t *lock;
+       dwc_waitq_t *waitq;
+       int pending;
+
+#ifdef DEBUG
+       struct work_container_queue entries;
+#endif
+};
+
+static void do_work(void *data, int pending)   // what to do with pending ???
+{
+       work_container_t *container = (work_container_t *)data;
+       dwc_workq_t *wq = container->wq;
+       dwc_irqflags_t flags;
+
+       if (container->hz) {
+               pause("dw3wrk", container->hz);
+       }
+
+       container->cb(container->data);
+       DWC_DEBUG("Work done: %s, container=%p", container->name, container);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_REMOVE(&wq->entries, container, entry);
+#endif
+       if (container->name)
+               DWC_FREE(container->name);
+       DWC_FREE(container);
+       wq->pending--;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+}
+
+static int work_done(void *data)
+{
+       dwc_workq_t *workq = (dwc_workq_t *)data;
+
+       return workq->pending == 0;
+}
+
+int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
+{
+       return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
+}
+
+dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
+{
+       dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+       if (!wq) {
+               DWC_ERROR("Cannot allocate memory for workqueue");
+               return NULL;
+       }
+
+       wq->taskq = taskqueue_create(name, M_NOWAIT, taskqueue_thread_enqueue, &wq->taskq);
+       if (!wq->taskq) {
+               DWC_ERROR("Cannot allocate memory for taskqueue");
+               goto no_taskq;
+       }
+
+       wq->pending = 0;
+
+       wq->lock = DWC_SPINLOCK_ALLOC();
+       if (!wq->lock) {
+               DWC_ERROR("Cannot allocate memory for spinlock");
+               goto no_lock;
+       }
+
+       wq->waitq = DWC_WAITQ_ALLOC();
+       if (!wq->waitq) {
+               DWC_ERROR("Cannot allocate memory for waitqueue");
+               goto no_waitq;
+       }
+
+       taskqueue_start_threads(&wq->taskq, 1, PWAIT, "%s taskq", "dw3tsk");
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_INIT(&wq->entries);
+#endif
+       return wq;
+
+ no_waitq:
+       DWC_SPINLOCK_FREE(wq->lock);
+ no_lock:
+       taskqueue_free(wq->taskq);
+ no_taskq:
+       DWC_FREE(wq);
+
+       return NULL;
+}
+
+void DWC_WORKQ_FREE(dwc_workq_t *wq)
+{
+#ifdef DEBUG
+       dwc_irqflags_t flags;
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+
+       if (wq->pending != 0) {
+               struct work_container *container;
+
+               DWC_ERROR("Destroying work queue with pending work");
+
+               DWC_CIRCLEQ_FOREACH(container, &wq->entries, entry) {
+                       DWC_ERROR("Work %s still pending", container->name);
+               }
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+#endif
+       DWC_WAITQ_FREE(wq->waitq);
+       DWC_SPINLOCK_FREE(wq->lock);
+       taskqueue_free(wq->taskq);
+       DWC_FREE(wq);
+}
+
+void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
+                       char *format, ...)
+{
+       dwc_irqflags_t flags;
+       work_container_t *container;
+       static char name[128];
+       va_list args;
+
+       va_start(args, format);
+       DWC_VSNPRINTF(name, 128, format, args);
+       va_end(args);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending++;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+
+       container = DWC_ALLOC_ATOMIC(sizeof(*container));
+       if (!container) {
+               DWC_ERROR("Cannot allocate memory for container");
+               return;
+       }
+
+       container->name = DWC_STRDUP(name);
+       if (!container->name) {
+               DWC_ERROR("Cannot allocate memory for container->name");
+               DWC_FREE(container);
+               return;
+       }
+
+       container->cb = cb;
+       container->data = data;
+       container->wq = wq;
+       container->hz = 0;
+
+       DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+
+       TASK_INIT(&container->task, 0, do_work, container);
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+       taskqueue_enqueue_fast(wq->taskq, &container->task);
+}
+
+void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
+                               void *data, uint32_t time, char *format, ...)
+{
+       dwc_irqflags_t flags;
+       work_container_t *container;
+       static char name[128];
+       struct timeval tv;
+       va_list args;
+
+       va_start(args, format);
+       DWC_VSNPRINTF(name, 128, format, args);
+       va_end(args);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending++;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+
+       container = DWC_ALLOC_ATOMIC(sizeof(*container));
+       if (!container) {
+               DWC_ERROR("Cannot allocate memory for container");
+               return;
+       }
+
+       container->name = DWC_STRDUP(name);
+       if (!container->name) {
+               DWC_ERROR("Cannot allocate memory for container->name");
+               DWC_FREE(container);
+               return;
+       }
+
+       container->cb = cb;
+       container->data = data;
+       container->wq = wq;
+
+       tv.tv_sec = time / 1000;
+       tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+       container->hz = tvtohz(&tv);
+
+       DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+
+       TASK_INIT(&container->task, 0, do_work, container);
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+       taskqueue_enqueue_fast(wq->taskq, &container->task);
+}
+
+int DWC_WORKQ_PENDING(dwc_workq_t *wq)
+{
+       return wq->pending;
+}
diff --git a/drivers/usb/host/dwc_common_port/dwc_common_linux.c b/drivers/usb/host/dwc_common_port/dwc_common_linux.c
new file mode 100644
index 0000000..f00a9ff
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_common_linux.c
@@ -0,0 +1,1421 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kthread.h>
+
+#ifdef DWC_CCLIB
+# include "dwc_cc.h"
+#endif
+
+#ifdef DWC_CRYPTOLIB
+# include "dwc_modpow.h"
+# include "dwc_dh.h"
+# include "dwc_crypto.h"
+#endif
+
+#ifdef DWC_NOTIFYLIB
+# include "dwc_notifier.h"
+#endif
+
+/* OS-Level Implementations */
+
+/* This is the Linux kernel implementation of the DWC platform library. */
+#include <linux/moduleparam.h>
+#include <linux/ctype.h>
+#include <linux/crypto.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/cdev.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/random.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/usb.h>
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
+# include <linux/usb/gadget.h>
+#else
+# include <linux/usb_gadget.h>
+#endif
+
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+
+/* MISC */
+
+void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
+{
+       return memset(dest, byte, size);
+}
+
+void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
+{
+       return memcpy(dest, src, size);
+}
+
+void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
+{
+       return memmove(dest, src, size);
+}
+
+int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
+{
+       return memcmp(m1, m2, size);
+}
+
+int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
+{
+       return strncmp(s1, s2, size);
+}
+
+int DWC_STRCMP(void *s1, void *s2)
+{
+       return strcmp(s1, s2);
+}
+
+int DWC_STRLEN(char const *str)
+{
+       return strlen(str);
+}
+
+char *DWC_STRCPY(char *to, char const *from)
+{
+       return strcpy(to, from);
+}
+
+char *DWC_STRDUP(char const *str)
+{
+       int len = DWC_STRLEN(str) + 1;
+       char *new = DWC_ALLOC_ATOMIC(len);
+
+       if (!new) {
+               return NULL;
+       }
+
+       DWC_MEMCPY(new, str, len);
+       return new;
+}
+
+int DWC_ATOI(const char *str, int32_t *value)
+{
+       char *end = NULL;
+
+       *value = simple_strtol(str, &end, 0);
+       if (*end == '\0') {
+               return 0;
+       }
+
+       return -1;
+}
+
+int DWC_ATOUI(const char *str, uint32_t *value)
+{
+       char *end = NULL;
+
+       *value = simple_strtoul(str, &end, 0);
+       if (*end == '\0') {
+               return 0;
+       }
+
+       return -1;
+}
+
+
+#ifdef DWC_UTFLIB
+/* From usbstring.c */
+
+int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
+{
+       int     count = 0;
+       u8      c;
+       u16     uchar;
+
+       /* this insists on correct encodings, though not minimal ones.
+        * BUT it currently rejects legit 4-byte UTF-8 code points,
+        * which need surrogate pairs.  (Unicode 3.1 can use them.)
+        */
+       while (len != 0 && (c = (u8) *s++) != 0) {
+               if (unlikely(c & 0x80)) {
+                       // 2-byte sequence:
+                       // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+                       if ((c & 0xe0) == 0xc0) {
+                               uchar = (c & 0x1f) << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                       // 3-byte sequence (most CJKV characters):
+                       // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+                       } else if ((c & 0xf0) == 0xe0) {
+                               uchar = (c & 0x0f) << 12;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                               /* no bogus surrogates */
+                               if (0xd800 <= uchar && uchar <= 0xdfff)
+                                       goto fail;
+
+                       // 4-byte sequence (surrogate pairs, currently rare):
+                       // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+                       //     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+                       // (uuuuu = wwww + 1)
+                       // FIXME accept the surrogate code points (only)
+                       } else
+                               goto fail;
+               } else
+                       uchar = c;
+               put_unaligned (cpu_to_le16 (uchar), cp++);
+               count++;
+               len--;
+       }
+       return count;
+fail:
+       return -1;
+}
+#endif /* DWC_UTFLIB */
+
+
+/* dwc_debug.h */
+
+dwc_bool_t DWC_IN_IRQ(void)
+{
+       return in_irq();
+}
+
+dwc_bool_t DWC_IN_BH(void)
+{
+       return in_softirq();
+}
+
+void DWC_VPRINTF(char *format, va_list args)
+{
+       vprintk(format, args);
+}
+
+int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
+{
+       return vsnprintf(str, size, format, args);
+}
+
+void DWC_PRINTF(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+int DWC_SPRINTF(char *buffer, char *format, ...)
+{
+       int retval;
+       va_list args;
+
+       va_start(args, format);
+       retval = vsprintf(buffer, format, args);
+       va_end(args);
+       return retval;
+}
+
+int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
+{
+       int retval;
+       va_list args;
+
+       va_start(args, format);
+       retval = vsnprintf(buffer, size, format, args);
+       va_end(args);
+       return retval;
+}
+
+void __DWC_WARN(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_PRINTF(KERN_WARNING);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+void __DWC_ERROR(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_PRINTF(KERN_ERR);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+void DWC_EXCEPTION(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_PRINTF(KERN_ERR);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+       BUG_ON(1);
+}
+
+#ifdef DEBUG
+void __DWC_DEBUG(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_PRINTF(KERN_DEBUG);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+#endif
+
+
+/* dwc_mem.h */
+
+#if 0
+dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
+                               uint32_t align,
+                               uint32_t alloc)
+{
+       struct dma_pool *pool = dma_pool_create("Pool", NULL,
+                                               size, align, alloc);
+       return (dwc_pool_t *)pool;
+}
+
+void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
+{
+       dma_pool_destroy((struct dma_pool *)pool);
+}
+
+void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+       return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
+}
+
+void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+       void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
+       memset(..);
+}
+
+void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
+{
+       dma_pool_free(pool, vaddr, daddr);
+}
+#endif
+
+void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+#ifdef xxCOSIM /* Only works for 32-bit cosim */
+       void *buf = dma_alloc_coherent(dma_ctx, (size_t)size, dma_addr, GFP_KERNEL);
+#else
+       void *buf = dma_alloc_coherent(dma_ctx, (size_t)size, dma_addr, GFP_KERNEL | GFP_DMA32);
+#endif
+       if (!buf) {
+               return NULL;
+       }
+
+       memset(buf, 0, (size_t)size);
+       return buf;
+}
+
+void *__DWC_DMA_ALLOC_ATOMIC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+       void *buf = dma_alloc_coherent(NULL, (size_t)size, dma_addr, GFP_ATOMIC);
+       if (!buf) {
+               return NULL;
+       }
+       memset(buf, 0, (size_t)size);
+       return buf;
+}
+
+void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
+{
+       dma_free_coherent(dma_ctx, size, virt_addr, dma_addr);
+}
+
+void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
+{
+       return kzalloc(size, GFP_KERNEL);
+}
+
+void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
+{
+       return kzalloc(size, GFP_ATOMIC);
+}
+
+void __DWC_FREE(void *mem_ctx, void *addr)
+{
+       kfree(addr);
+}
+
+
+#ifdef DWC_CRYPTOLIB
+/* dwc_crypto.h */
+
+void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
+{
+       get_random_bytes(buffer, length);
+}
+
+int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
+{
+       struct crypto_blkcipher *tfm;
+       struct blkcipher_desc desc;
+       struct scatterlist sgd;
+       struct scatterlist sgs;
+
+       tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+       if (tfm == NULL) {
+               printk("failed to load transform for aes CBC\n");
+               return -1;
+       }
+
+       crypto_blkcipher_setkey(tfm, key, keylen);
+       crypto_blkcipher_set_iv(tfm, iv, 16);
+
+       sg_init_one(&sgd, out, messagelen);
+       sg_init_one(&sgs, message, messagelen);
+
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
+               crypto_free_blkcipher(tfm);
+               DWC_ERROR("AES CBC encryption failed");
+               return -1;
+       }
+
+       crypto_free_blkcipher(tfm);
+       return 0;
+}
+
+int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
+{
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
+       struct scatterlist sg;
+
+       tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               DWC_ERROR("Failed to load transform for sha256: %ld\n", PTR_ERR(tfm));
+               return 0;
+       }
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       sg_init_one(&sg, message, len);
+       crypto_hash_digest(&desc, &sg, len, out);
+       crypto_free_hash(tfm);
+
+       return 1;
+}
+
+int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
+                   uint8_t *key, uint32_t keylen, uint8_t *out)
+{
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
+       struct scatterlist sg;
+
+       tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               DWC_ERROR("Failed to load transform for hmac(sha256): %ld\n", PTR_ERR(tfm));
+               return 0;
+       }
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       sg_init_one(&sg, message, messagelen);
+       crypto_hash_setkey(tfm, key, keylen);
+       crypto_hash_digest(&desc, &sg, messagelen, out);
+       crypto_free_hash(tfm);
+
+       return 1;
+}
+#endif /* DWC_CRYPTOLIB */
+
+
+/* Byte Ordering Conversions */
+
+uint32_t DWC_CPU_TO_LE32(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_CPU_TO_BE32(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_LE32_TO_CPU(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_BE32_TO_CPU(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint16_t DWC_CPU_TO_LE16(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_CPU_TO_BE16(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_LE16_TO_CPU(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_BE16_TO_CPU(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+
+/* Registers */
+
+uint32_t DWC_READ_REG32(uint32_t volatile *reg)
+{
+       return readl(reg);
+}
+
+#if 0
+uint64_t DWC_READ_REG64(uint64_t volatile *reg)
+{
+}
+#endif
+
+void DWC_WRITE_REG32(uint32_t volatile *reg, uint32_t value)
+{
+       writel(value, reg);
+}
+
+#if 0
+void DWC_WRITE_REG64(uint64_t volatile *reg, uint64_t value)
+{
+}
+#endif
+
+void DWC_MODIFY_REG32(uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask)
+{
+       writel((readl(reg) & ~clear_mask) | set_mask, reg);
+}
+
+#if 0
+void DWC_MODIFY_REG64(uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask)
+{
+}
+#endif
+
+
+/* Locking */
+
+dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
+{
+       spinlock_t *sl = (spinlock_t *)1;
+
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+       sl = DWC_ALLOC(sizeof(*sl));
+       if (!sl) {
+               DWC_ERROR("Cannot allocate memory for spinlock\n");
+               return NULL;
+       }
+
+       spin_lock_init(sl);
+#endif
+       return (dwc_spinlock_t *)sl;
+}
+
+void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+       DWC_FREE(lock);
+#endif
+}
+
+void DWC_SPINLOCK(dwc_spinlock_t *lock)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+       spin_lock((spinlock_t *)lock);
+#endif
+}
+
+void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+       spin_unlock((spinlock_t *)lock);
+#endif
+}
+
+void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
+{
+       dwc_irqflags_t f;
+
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+       spin_lock_irqsave((spinlock_t *)lock, f);
+#else
+       local_irq_save(f);
+#endif
+       *flags = f;
+}
+
+void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+       spin_unlock_irqrestore((spinlock_t *)lock, flags);
+#else
+       local_irq_restore(flags);
+#endif
+}
+
+dwc_mutex_t *DWC_MUTEX_ALLOC(void)
+{
+       struct mutex *m;
+       dwc_mutex_t *mutex = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mutex));
+
+       if (!mutex) {
+               DWC_ERROR("Cannot allocate memory for mutex\n");
+               return NULL;
+       }
+
+       m = (struct mutex *)mutex;
+       mutex_init(m);
+       return mutex;
+}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+#else
+void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
+{
+       mutex_destroy((struct mutex *)mutex);
+       DWC_FREE(mutex);
+}
+#endif
+
+void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
+{
+       struct mutex *m = (struct mutex *)mutex;
+       mutex_lock(m);
+}
+
+int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
+{
+       struct mutex *m = (struct mutex *)mutex;
+       return mutex_trylock(m);
+}
+
+void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
+{
+       struct mutex *m = (struct mutex *)mutex;
+       mutex_unlock(m);
+}
+
+
+/* Timing */
+
+void DWC_UDELAY(uint32_t usecs)
+{
+       udelay(usecs);
+}
+
+void DWC_MDELAY(uint32_t msecs)
+{
+       mdelay(msecs);
+}
+
+void DWC_MSLEEP(uint32_t msecs)
+{
+       msleep(msecs);
+}
+
+uint32_t DWC_TIME(void)
+{
+       return jiffies_to_msecs(jiffies);
+}
+
+
+/* Timers */
+
+struct dwc_timer {
+       struct timer_list *t;
+       char *name;
+       dwc_timer_callback_t cb;
+       void *data;
+       uint8_t scheduled;
+       dwc_spinlock_t *lock;
+};
+
+static void timer_callback(unsigned long data)
+{
+       dwc_timer_t *timer = (dwc_timer_t *)data;
+       dwc_irqflags_t flags;
+
+       DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
+       timer->scheduled = 0;
+       DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
+       DWC_DEBUGC("Timer %s callback", timer->name);
+       timer->cb(timer->data);
+}
+
+dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
+{
+       dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
+
+       if (!t) {
+               DWC_ERROR("Cannot allocate memory for timer");
+               return NULL;
+       }
+
+       t->t = DWC_ALLOC(sizeof(*t->t));
+       if (!t->t) {
+               DWC_ERROR("Cannot allocate memory for timer->t");
+               goto no_timer;
+       }
+
+       t->name = DWC_STRDUP(name);
+       if (!t->name) {
+               DWC_ERROR("Cannot allocate memory for timer->name");
+               goto no_name;
+       }
+
+       t->lock = DWC_SPINLOCK_ALLOC();
+       if (!t->lock) {
+               DWC_ERROR("Cannot allocate memory for lock");
+               goto no_lock;
+       }
+
+       t->scheduled = 0;
+       t->t->base = &boot_tvec_bases;
+       t->t->expires = jiffies;
+       setup_timer(t->t, timer_callback, (unsigned long)t);
+
+       t->cb = cb;
+       t->data = data;
+
+       return t;
+
+ no_lock:
+       DWC_FREE(t->name);
+ no_name:
+       DWC_FREE(t->t);
+ no_timer:
+       DWC_FREE(t);
+       return NULL;
+}
+
+void DWC_TIMER_FREE(dwc_timer_t *timer)
+{
+       dwc_irqflags_t flags;
+
+       DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
+
+       if (timer->scheduled) {
+               del_timer(timer->t);
+               timer->scheduled = 0;
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
+       DWC_SPINLOCK_FREE(timer->lock);
+       DWC_FREE(timer->t);
+       DWC_FREE(timer->name);
+       DWC_FREE(timer);
+}
+
+void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
+{
+       dwc_irqflags_t flags;
+
+       DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
+
+       if (!timer->scheduled) {
+               timer->scheduled = 1;
+               DWC_DEBUGC("Scheduling timer %s to expire in +%d msec", timer->name, time);
+               timer->t->expires = jiffies + msecs_to_jiffies(time);
+               add_timer(timer->t);
+       } else {
+               DWC_DEBUGC("Modifying timer %s to expire in +%d msec", timer->name, time);
+               mod_timer(timer->t, jiffies + msecs_to_jiffies(time));
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
+}
+
+void DWC_TIMER_CANCEL(dwc_timer_t *timer)
+{
+       del_timer(timer->t);
+}
+
+
+/* Wait Queues */
+
+struct dwc_waitq {
+       wait_queue_head_t queue;
+       int abort;
+};
+
+dwc_waitq_t *DWC_WAITQ_ALLOC(void)
+{
+       dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+       if (!wq) {
+               DWC_ERROR("Cannot allocate memory for waitqueue\n");
+               return NULL;
+       }
+
+       init_waitqueue_head(&wq->queue);
+       wq->abort = 0;
+       return wq;
+}
+
+void DWC_WAITQ_FREE(dwc_waitq_t *wq)
+{
+       DWC_FREE(wq);
+}
+
+int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
+{
+       int result = wait_event_interruptible(wq->queue,
+                                             cond(data) || wq->abort);
+       if (result == -ERESTARTSYS) {
+               wq->abort = 0;
+               return -DWC_E_RESTART;
+       }
+
+       if (wq->abort == 1) {
+               wq->abort = 0;
+               return -DWC_E_ABORT;
+       }
+
+       wq->abort = 0;
+
+       if (result == 0) {
+               return 0;
+       }
+
+       return -DWC_E_UNKNOWN;
+}
+
+int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+                              void *data, int32_t msecs)
+{
+       int32_t tmsecs;
+       int result = wait_event_interruptible_timeout(wq->queue,
+                                                     cond(data) || wq->abort,
+                                                     msecs_to_jiffies(msecs));
+       if (result == -ERESTARTSYS) {
+               wq->abort = 0;
+               return -DWC_E_RESTART;
+       }
+
+       if (wq->abort == 1) {
+               wq->abort = 0;
+               return -DWC_E_ABORT;
+       }
+
+       wq->abort = 0;
+
+       if (result > 0) {
+               tmsecs = jiffies_to_msecs(result);
+               if (!tmsecs) {
+                       return 1;
+               }
+
+               return tmsecs;
+       }
+
+       if (result == 0) {
+               return -DWC_E_TIMEOUT;
+       }
+
+       return -DWC_E_UNKNOWN;
+}
+
+void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
+{
+       wq->abort = 0;
+       wake_up_interruptible(&wq->queue);
+}
+
+void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
+{
+       wq->abort = 1;
+       wake_up_interruptible(&wq->queue);
+}
+
+
+/* Threading */
+
+dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
+{
+       struct task_struct *thread = kthread_run(func, data, name);
+
+       if (thread == ERR_PTR(-ENOMEM)) {
+               return NULL;
+       }
+
+       return (dwc_thread_t *)thread;
+}
+
+int DWC_THREAD_STOP(dwc_thread_t *thread)
+{
+       return kthread_stop((struct task_struct *)thread);
+}
+
+dwc_bool_t DWC_THREAD_SHOULD_STOP(void)
+{
+       return kthread_should_stop();
+}
+
+
+/* tasklets
+ - run in interrupt context (cannot sleep)
+ - each tasklet runs on a single CPU
+ - different tasklets can be running simultaneously on different CPUs
+ */
+struct dwc_tasklet {
+       struct tasklet_struct t;
+       dwc_tasklet_callback_t cb;
+       void *data;
+};
+
+static void tasklet_callback(unsigned long data)
+{
+       dwc_tasklet_t *t = (dwc_tasklet_t *)data;
+       t->cb(t->data);
+}
+
+dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
+{
+       dwc_tasklet_t *t = DWC_ALLOC(sizeof(*t));
+
+       if (t) {
+               t->cb = cb;
+               t->data = data;
+               tasklet_init(&t->t, tasklet_callback, (unsigned long)t);
+       } else {
+               DWC_ERROR("Cannot allocate memory for tasklet\n");
+       }
+
+       return t;
+}
+
+void DWC_TASK_FREE(dwc_tasklet_t *task)
+{
+       DWC_FREE(task);
+}
+
+void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
+{
+       tasklet_schedule(&task->t);
+}
+
+
+/* workqueues
+ - run in process context (can sleep)
+ */
+typedef struct work_container {
+       dwc_work_callback_t cb;
+       void *data;
+       dwc_workq_t *wq;
+       char *name;
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_ENTRY(work_container) entry;
+#endif
+       struct delayed_work work;
+} work_container_t;
+
+#ifdef DEBUG
+DWC_CIRCLEQ_HEAD(work_container_queue, work_container);
+#endif
+
+struct dwc_workq {
+       struct workqueue_struct *wq;
+       dwc_spinlock_t *lock;
+       dwc_waitq_t *waitq;
+       int pending;
+
+#ifdef DEBUG
+       struct work_container_queue entries;
+#endif
+};
+
+static void do_work(struct work_struct *work)
+{
+       dwc_irqflags_t flags;
+       struct delayed_work *dw = container_of(work, struct delayed_work, work);
+       work_container_t *container = container_of(dw, struct work_container, work);
+       dwc_workq_t *wq = container->wq;
+
+       container->cb(container->data);
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_REMOVE(&wq->entries, container, entry);
+#endif
+       DWC_DEBUGC("Work done: %s, container=%p", container->name, container);
+       if (container->name) {
+               DWC_FREE(container->name);
+       }
+       DWC_FREE(container);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending--;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+}
+
+static int work_done(void *data)
+{
+       dwc_workq_t *workq = (dwc_workq_t *)data;
+       return workq->pending == 0;
+}
+
+int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
+{
+       return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
+}
+
+dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
+{
+       dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+       if (!wq) {
+               return NULL;
+       }
+
+       wq->wq = create_singlethread_workqueue(name);
+       if (!wq->wq) {
+               goto no_wq;
+       }
+
+       wq->pending = 0;
+
+       wq->lock = DWC_SPINLOCK_ALLOC();
+       if (!wq->lock) {
+               goto no_lock;
+       }
+
+       wq->waitq = DWC_WAITQ_ALLOC();
+       if (!wq->waitq) {
+               goto no_waitq;
+       }
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_INIT(&wq->entries);
+#endif
+       return wq;
+
+ no_waitq:
+       DWC_SPINLOCK_FREE(wq->lock);
+ no_lock:
+       destroy_workqueue(wq->wq);
+ no_wq:
+       DWC_FREE(wq);
+
+       return NULL;
+}
+
+void DWC_WORKQ_FREE(dwc_workq_t *wq)
+{
+#ifdef DEBUG
+       if (wq->pending != 0) {
+               struct work_container *wc;
+               DWC_ERROR("Destroying work queue with pending work");
+               DWC_CIRCLEQ_FOREACH(wc, &wq->entries, entry) {
+                       DWC_ERROR("Work %s still pending", wc->name);
+               }
+       }
+#endif
+       destroy_workqueue(wq->wq);
+       DWC_SPINLOCK_FREE(wq->lock);
+       DWC_WAITQ_FREE(wq->waitq);
+       DWC_FREE(wq);
+}
+
+void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
+                       char *format, ...)
+{
+       dwc_irqflags_t flags;
+       work_container_t *container;
+       static char name[128];
+       va_list args;
+
+       va_start(args, format);
+       DWC_VSNPRINTF(name, 128, format, args);
+       va_end(args);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending++;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+
+       container = DWC_ALLOC_ATOMIC(sizeof(*container));
+       if (!container) {
+               DWC_ERROR("Cannot allocate memory for container\n");
+               return;
+       }
+
+       container->name = DWC_STRDUP(name);
+       if (!container->name) {
+               DWC_ERROR("Cannot allocate memory for container->name\n");
+               DWC_FREE(container);
+               return;
+       }
+
+       container->cb = cb;
+       container->data = data;
+       container->wq = wq;
+       DWC_DEBUGC("Queueing work: %s, container=%p", container->name, container);
+       INIT_WORK(&container->work.work, do_work);
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+       queue_work(wq->wq, &container->work.work);
+}
+
+void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
+                               void *data, uint32_t time, char *format, ...)
+{
+       dwc_irqflags_t flags;
+       work_container_t *container;
+       static char name[128];
+       va_list args;
+
+       va_start(args, format);
+       DWC_VSNPRINTF(name, 128, format, args);
+       va_end(args);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending++;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+
+       container = DWC_ALLOC_ATOMIC(sizeof(*container));
+       if (!container) {
+               DWC_ERROR("Cannot allocate memory for container\n");
+               return;
+       }
+
+       container->name = DWC_STRDUP(name);
+       if (!container->name) {
+               DWC_ERROR("Cannot allocate memory for container->name\n");
+               DWC_FREE(container);
+               return;
+       }
+
+       container->cb = cb;
+       container->data = data;
+       container->wq = wq;
+       DWC_DEBUGC("Queueing work: %s, container=%p", container->name, container);
+       INIT_DELAYED_WORK(&container->work, do_work);
+
+#ifdef DEBUG
+       DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+       queue_delayed_work(wq->wq, &container->work, msecs_to_jiffies(time));
+}
+
+int DWC_WORKQ_PENDING(dwc_workq_t *wq)
+{
+       return wq->pending;
+}
+
+
+#ifdef DWC_LIBMODULE
+
+#ifdef DWC_CCLIB
+/* CC */
+EXPORT_SYMBOL(dwc_cc_if_alloc);
+EXPORT_SYMBOL(dwc_cc_if_free);
+EXPORT_SYMBOL(dwc_cc_clear);
+EXPORT_SYMBOL(dwc_cc_add);
+EXPORT_SYMBOL(dwc_cc_remove);
+EXPORT_SYMBOL(dwc_cc_change);
+EXPORT_SYMBOL(dwc_cc_data_for_save);
+EXPORT_SYMBOL(dwc_cc_restore_from_data);
+EXPORT_SYMBOL(dwc_cc_match_chid);
+EXPORT_SYMBOL(dwc_cc_match_cdid);
+EXPORT_SYMBOL(dwc_cc_ck);
+EXPORT_SYMBOL(dwc_cc_chid);
+EXPORT_SYMBOL(dwc_cc_cdid);
+EXPORT_SYMBOL(dwc_cc_name);
+#endif /* DWC_CCLIB */
+
+#ifdef DWC_CRYPTOLIB
+# ifndef CONFIG_MACH_IPMATE
+/* Modpow */
+EXPORT_SYMBOL(dwc_modpow);
+
+/* DH */
+EXPORT_SYMBOL(dwc_dh_modpow);
+EXPORT_SYMBOL(dwc_dh_derive_keys);
+EXPORT_SYMBOL(dwc_dh_pk);
+# endif        /* CONFIG_MACH_IPMATE */
+
+/* Crypto */
+EXPORT_SYMBOL(dwc_wusb_aes_encrypt);
+EXPORT_SYMBOL(dwc_wusb_cmf);
+EXPORT_SYMBOL(dwc_wusb_prf);
+EXPORT_SYMBOL(dwc_wusb_fill_ccm_nonce);
+EXPORT_SYMBOL(dwc_wusb_gen_nonce);
+EXPORT_SYMBOL(dwc_wusb_gen_key);
+EXPORT_SYMBOL(dwc_wusb_gen_mic);
+#endif /* DWC_CRYPTOLIB */
+
+/* Notification */
+#ifdef DWC_NOTIFYLIB
+EXPORT_SYMBOL(dwc_alloc_notification_manager);
+EXPORT_SYMBOL(dwc_free_notification_manager);
+EXPORT_SYMBOL(dwc_register_notifier);
+EXPORT_SYMBOL(dwc_unregister_notifier);
+EXPORT_SYMBOL(dwc_add_observer);
+EXPORT_SYMBOL(dwc_remove_observer);
+EXPORT_SYMBOL(dwc_notify);
+#endif
+
+/* Memory Debugging Routines */
+#ifdef DWC_DEBUG_MEMORY
+EXPORT_SYMBOL(dwc_alloc_debug);
+EXPORT_SYMBOL(dwc_alloc_atomic_debug);
+EXPORT_SYMBOL(dwc_free_debug);
+EXPORT_SYMBOL(dwc_dma_alloc_debug);
+EXPORT_SYMBOL(dwc_dma_free_debug);
+#endif
+
+EXPORT_SYMBOL(DWC_MEMSET);
+EXPORT_SYMBOL(DWC_MEMCPY);
+EXPORT_SYMBOL(DWC_MEMMOVE);
+EXPORT_SYMBOL(DWC_MEMCMP);
+EXPORT_SYMBOL(DWC_STRNCMP);
+EXPORT_SYMBOL(DWC_STRCMP);
+EXPORT_SYMBOL(DWC_STRLEN);
+EXPORT_SYMBOL(DWC_STRCPY);
+EXPORT_SYMBOL(DWC_STRDUP);
+EXPORT_SYMBOL(DWC_ATOI);
+EXPORT_SYMBOL(DWC_ATOUI);
+
+#ifdef DWC_UTFLIB
+EXPORT_SYMBOL(DWC_UTF8_TO_UTF16LE);
+#endif /* DWC_UTFLIB */
+
+EXPORT_SYMBOL(DWC_IN_IRQ);
+EXPORT_SYMBOL(DWC_IN_BH);
+EXPORT_SYMBOL(DWC_VPRINTF);
+EXPORT_SYMBOL(DWC_VSNPRINTF);
+EXPORT_SYMBOL(DWC_PRINTF);
+EXPORT_SYMBOL(DWC_SPRINTF);
+EXPORT_SYMBOL(DWC_SNPRINTF);
+EXPORT_SYMBOL(__DWC_WARN);
+EXPORT_SYMBOL(__DWC_ERROR);
+EXPORT_SYMBOL(DWC_EXCEPTION);
+
+#ifdef DEBUG
+EXPORT_SYMBOL(__DWC_DEBUG);
+#endif
+
+EXPORT_SYMBOL(__DWC_DMA_ALLOC);\r
+EXPORT_SYMBOL(__DWC_DMA_ALLOC_ATOMIC);
+EXPORT_SYMBOL(__DWC_DMA_FREE);
+EXPORT_SYMBOL(__DWC_ALLOC);
+EXPORT_SYMBOL(__DWC_ALLOC_ATOMIC);
+EXPORT_SYMBOL(__DWC_FREE);
+
+#ifdef DWC_CRYPTOLIB
+EXPORT_SYMBOL(DWC_RANDOM_BYTES);
+EXPORT_SYMBOL(DWC_AES_CBC);
+EXPORT_SYMBOL(DWC_SHA256);
+EXPORT_SYMBOL(DWC_HMAC_SHA256);
+#endif
+
+EXPORT_SYMBOL(DWC_CPU_TO_LE32);
+EXPORT_SYMBOL(DWC_CPU_TO_BE32);
+EXPORT_SYMBOL(DWC_LE32_TO_CPU);
+EXPORT_SYMBOL(DWC_BE32_TO_CPU);
+EXPORT_SYMBOL(DWC_CPU_TO_LE16);
+EXPORT_SYMBOL(DWC_CPU_TO_BE16);
+EXPORT_SYMBOL(DWC_LE16_TO_CPU);
+EXPORT_SYMBOL(DWC_BE16_TO_CPU);
+EXPORT_SYMBOL(DWC_READ_REG32);
+EXPORT_SYMBOL(DWC_WRITE_REG32);
+EXPORT_SYMBOL(DWC_MODIFY_REG32);
+
+#if 0
+EXPORT_SYMBOL(DWC_READ_REG64);
+EXPORT_SYMBOL(DWC_WRITE_REG64);
+EXPORT_SYMBOL(DWC_MODIFY_REG64);
+#endif
+
+EXPORT_SYMBOL(DWC_SPINLOCK_ALLOC);
+EXPORT_SYMBOL(DWC_SPINLOCK_FREE);
+EXPORT_SYMBOL(DWC_SPINLOCK);
+EXPORT_SYMBOL(DWC_SPINUNLOCK);
+EXPORT_SYMBOL(DWC_SPINLOCK_IRQSAVE);
+EXPORT_SYMBOL(DWC_SPINUNLOCK_IRQRESTORE);
+EXPORT_SYMBOL(DWC_MUTEX_ALLOC);
+
+#if (!defined(DWC_LINUX) || !defined(CONFIG_DEBUG_MUTEXES))
+EXPORT_SYMBOL(DWC_MUTEX_FREE);
+#endif
+
+EXPORT_SYMBOL(DWC_MUTEX_LOCK);
+EXPORT_SYMBOL(DWC_MUTEX_TRYLOCK);
+EXPORT_SYMBOL(DWC_MUTEX_UNLOCK);
+EXPORT_SYMBOL(DWC_UDELAY);
+EXPORT_SYMBOL(DWC_MDELAY);
+EXPORT_SYMBOL(DWC_MSLEEP);
+EXPORT_SYMBOL(DWC_TIME);
+EXPORT_SYMBOL(DWC_TIMER_ALLOC);
+EXPORT_SYMBOL(DWC_TIMER_FREE);
+EXPORT_SYMBOL(DWC_TIMER_SCHEDULE);
+EXPORT_SYMBOL(DWC_TIMER_CANCEL);
+EXPORT_SYMBOL(DWC_WAITQ_ALLOC);
+EXPORT_SYMBOL(DWC_WAITQ_FREE);
+EXPORT_SYMBOL(DWC_WAITQ_WAIT);
+EXPORT_SYMBOL(DWC_WAITQ_WAIT_TIMEOUT);
+EXPORT_SYMBOL(DWC_WAITQ_TRIGGER);
+EXPORT_SYMBOL(DWC_WAITQ_ABORT);
+EXPORT_SYMBOL(DWC_THREAD_RUN);
+EXPORT_SYMBOL(DWC_THREAD_STOP);
+EXPORT_SYMBOL(DWC_THREAD_SHOULD_STOP);
+EXPORT_SYMBOL(DWC_TASK_ALLOC);
+EXPORT_SYMBOL(DWC_TASK_FREE);
+EXPORT_SYMBOL(DWC_TASK_SCHEDULE);
+EXPORT_SYMBOL(DWC_WORKQ_WAIT_WORK_DONE);
+EXPORT_SYMBOL(DWC_WORKQ_ALLOC);
+EXPORT_SYMBOL(DWC_WORKQ_FREE);
+EXPORT_SYMBOL(DWC_WORKQ_SCHEDULE);
+EXPORT_SYMBOL(DWC_WORKQ_SCHEDULE_DELAYED);
+EXPORT_SYMBOL(DWC_WORKQ_PENDING);
+
+static int dwc_common_port_init_module(void)
+{
+       int result = 0;
+
+       printk(KERN_DEBUG "Module dwc_common_port init\n" );
+
+#ifdef DWC_DEBUG_MEMORY
+       result = dwc_memory_debug_start(NULL);
+       if (result) {
+               printk(KERN_ERR
+                      "dwc_memory_debug_start() failed with error %d\n",
+                      result);
+               return result;
+       }
+#endif
+
+#ifdef DWC_NOTIFYLIB
+       result = dwc_alloc_notification_manager(NULL, NULL);
+       if (result) {
+               printk(KERN_ERR
+                      "dwc_alloc_notification_manager() failed with error %d\n",
+                      result);
+               return result;
+       }
+#endif
+       return result;
+}
+
+static void dwc_common_port_exit_module(void)
+{
+       printk(KERN_DEBUG "Module dwc_common_port exit\n" );
+
+#ifdef DWC_NOTIFYLIB
+       dwc_free_notification_manager();
+#endif
+
+#ifdef DWC_DEBUG_MEMORY
+       dwc_memory_debug_stop();
+#endif
+}
+
+module_init(dwc_common_port_init_module);
+module_exit(dwc_common_port_exit_module);
+
+MODULE_DESCRIPTION("DWC Common Library - Portable version");
+MODULE_AUTHOR("Synopsys Inc.");
+MODULE_LICENSE ("GPL");
+
+#endif /* DWC_LIBMODULE */
diff --git a/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c b/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c
new file mode 100644
index 0000000..49b07e1
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c
@@ -0,0 +1,1275 @@
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+#ifdef DWC_CCLIB
+# include "dwc_cc.h"
+#endif
+
+#ifdef DWC_CRYPTOLIB
+# include "dwc_modpow.h"
+# include "dwc_dh.h"
+# include "dwc_crypto.h"
+#endif
+
+#ifdef DWC_NOTIFYLIB
+# include "dwc_notifier.h"
+#endif
+
+/* OS-Level Implementations */
+
+/* This is the NetBSD 4.0.1 kernel implementation of the DWC platform library. */
+
+
+/* MISC */
+
+void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
+{
+       return memset(dest, byte, size);
+}
+
+void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
+{
+       return memcpy(dest, src, size);
+}
+
+void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
+{
+       bcopy(src, dest, size);
+       return dest;
+}
+
+int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
+{
+       return memcmp(m1, m2, size);
+}
+
+int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
+{
+       return strncmp(s1, s2, size);
+}
+
+int DWC_STRCMP(void *s1, void *s2)
+{
+       return strcmp(s1, s2);
+}
+
+int DWC_STRLEN(char const *str)
+{
+       return strlen(str);
+}
+
+char *DWC_STRCPY(char *to, char const *from)
+{
+       return strcpy(to, from);
+}
+
+char *DWC_STRDUP(char const *str)
+{
+       int len = DWC_STRLEN(str) + 1;
+       char *new = DWC_ALLOC_ATOMIC(len);
+
+       if (!new) {
+               return NULL;
+       }
+
+       DWC_MEMCPY(new, str, len);
+       return new;
+}
+
+int DWC_ATOI(char *str, int32_t *value)
+{
+       char *end = NULL;
+
+       /* NetBSD doesn't have 'strtol' in the kernel, but 'strtoul'
+        * should be equivalent on 2's complement machines
+        */
+       *value = strtoul(str, &end, 0);
+       if (*end == '\0') {
+               return 0;
+       }
+
+       return -1;
+}
+
+int DWC_ATOUI(char *str, uint32_t *value)
+{
+       char *end = NULL;
+
+       *value = strtoul(str, &end, 0);
+       if (*end == '\0') {
+               return 0;
+       }
+
+       return -1;
+}
+
+
+#ifdef DWC_UTFLIB
+/* From usbstring.c */
+
+int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
+{
+       int     count = 0;
+       u8      c;
+       u16     uchar;
+
+       /* this insists on correct encodings, though not minimal ones.
+        * BUT it currently rejects legit 4-byte UTF-8 code points,
+        * which need surrogate pairs.  (Unicode 3.1 can use them.)
+        */
+       while (len != 0 && (c = (u8) *s++) != 0) {
+               if (unlikely(c & 0x80)) {
+                       // 2-byte sequence:
+                       // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+                       if ((c & 0xe0) == 0xc0) {
+                               uchar = (c & 0x1f) << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                       // 3-byte sequence (most CJKV characters):
+                       // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+                       } else if ((c & 0xf0) == 0xe0) {
+                               uchar = (c & 0x0f) << 12;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                               /* no bogus surrogates */
+                               if (0xd800 <= uchar && uchar <= 0xdfff)
+                                       goto fail;
+
+                       // 4-byte sequence (surrogate pairs, currently rare):
+                       // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+                       //     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+                       // (uuuuu = wwww + 1)
+                       // FIXME accept the surrogate code points (only)
+                       } else
+                               goto fail;
+               } else
+                       uchar = c;
+               put_unaligned (cpu_to_le16 (uchar), cp++);
+               count++;
+               len--;
+       }
+       return count;
+fail:
+       return -1;
+}
+
+#endif /* DWC_UTFLIB */
+
+
+/* dwc_debug.h */
+
+dwc_bool_t DWC_IN_IRQ(void)
+{
+//     return in_irq();
+       return 0;
+}
+
+dwc_bool_t DWC_IN_BH(void)
+{
+//     return in_softirq();
+       return 0;
+}
+
+void DWC_VPRINTF(char *format, va_list args)
+{
+       vprintf(format, args);
+}
+
+int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
+{
+       return vsnprintf(str, size, format, args);
+}
+
+void DWC_PRINTF(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+int DWC_SPRINTF(char *buffer, char *format, ...)
+{
+       int retval;
+       va_list args;
+
+       va_start(args, format);
+       retval = vsprintf(buffer, format, args);
+       va_end(args);
+       return retval;
+}
+
+int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
+{
+       int retval;
+       va_list args;
+
+       va_start(args, format);
+       retval = vsnprintf(buffer, size, format, args);
+       va_end(args);
+       return retval;
+}
+
+void __DWC_WARN(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+void __DWC_ERROR(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+
+void DWC_EXCEPTION(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+//     BUG_ON(1);      ???
+}
+
+#ifdef DEBUG
+void __DWC_DEBUG(char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       DWC_VPRINTF(format, args);
+       va_end(args);
+}
+#endif
+
+
+/* dwc_mem.h */
+
+#if 0
+dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
+                               uint32_t align,
+                               uint32_t alloc)
+{
+       struct dma_pool *pool = dma_pool_create("Pool", NULL,
+                                               size, align, alloc);
+       return (dwc_pool_t *)pool;
+}
+
+void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
+{
+       dma_pool_destroy((struct dma_pool *)pool);
+}
+
+void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+//     return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
+       return dma_pool_alloc((struct dma_pool *)pool, M_WAITOK, dma_addr);
+}
+
+void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+       void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
+       memset(..);
+}
+
+void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
+{
+       dma_pool_free(pool, vaddr, daddr);
+}
+#endif
+
+void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+       dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+       int error;
+
+       error = bus_dmamem_alloc(dma->dma_tag, size, 1, size, dma->segs,
+                                sizeof(dma->segs) / sizeof(dma->segs[0]),
+                                &dma->nsegs, BUS_DMA_NOWAIT);
+       if (error) {
+               printf("%s: bus_dmamem_alloc(%ju) failed: %d\n", __func__,
+                      (uintmax_t)size, error);
+               goto fail_0;
+       }
+
+       error = bus_dmamem_map(dma->dma_tag, dma->segs, dma->nsegs, size,
+                              (caddr_t *)&dma->dma_vaddr,
+                              BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
+       if (error) {
+               printf("%s: bus_dmamem_map failed: %d\n", __func__, error);
+               goto fail_1;
+       }
+
+       error = bus_dmamap_create(dma->dma_tag, size, 1, size, 0,
+                                 BUS_DMA_NOWAIT, &dma->dma_map);
+       if (error) {
+               printf("%s: bus_dmamap_create failed: %d\n", __func__, error);
+               goto fail_2;
+       }
+
+       error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
+                               size, NULL, BUS_DMA_NOWAIT);
+       if (error) {
+               printf("%s: bus_dmamap_load failed: %d\n", __func__, error);
+               goto fail_3;
+       }
+
+       dma->dma_paddr = (bus_addr_t)dma->segs[0].ds_addr;
+       *dma_addr = dma->dma_paddr;
+       return dma->dma_vaddr;
+
+fail_3:
+       bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
+fail_2:
+       bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size);
+fail_1:
+       bus_dmamem_free(dma->dma_tag, dma->segs, dma->nsegs);
+fail_0:
+       dma->dma_map = NULL;
+       dma->dma_vaddr = NULL;
+       dma->nsegs = 0;
+
+       return NULL;
+}
+
+void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
+{
+       dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+
+       if (dma->dma_map != NULL) {
+               bus_dmamap_sync(dma->dma_tag, dma->dma_map, 0, size,
+                               BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
+               bus_dmamap_unload(dma->dma_tag, dma->dma_map);
+               bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
+               bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size);
+               bus_dmamem_free(dma->dma_tag, dma->segs, dma->nsegs);
+               dma->dma_paddr = 0;
+               dma->dma_map = NULL;
+               dma->dma_vaddr = NULL;
+               dma->nsegs = 0;
+       }
+}
+
+void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
+{
+       return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
+}
+
+void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
+{
+       return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
+}
+
+void __DWC_FREE(void *mem_ctx, void *addr)
+{
+       free(addr, M_DEVBUF);
+}
+
+
+#ifdef DWC_CRYPTOLIB
+/* dwc_crypto.h */
+
+void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
+{
+       get_random_bytes(buffer, length);
+}
+
+int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
+{
+       struct crypto_blkcipher *tfm;
+       struct blkcipher_desc desc;
+       struct scatterlist sgd;
+       struct scatterlist sgs;
+
+       tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+       if (tfm == NULL) {
+               printk("failed to load transform for aes CBC\n");
+               return -1;
+       }
+
+       crypto_blkcipher_setkey(tfm, key, keylen);
+       crypto_blkcipher_set_iv(tfm, iv, 16);
+
+       sg_init_one(&sgd, out, messagelen);
+       sg_init_one(&sgs, message, messagelen);
+
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
+               crypto_free_blkcipher(tfm);
+               DWC_ERROR("AES CBC encryption failed");
+               return -1;
+       }
+
+       crypto_free_blkcipher(tfm);
+       return 0;
+}
+
+int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
+{
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
+       struct scatterlist sg;
+
+       tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               DWC_ERROR("Failed to load transform for sha256: %ld", PTR_ERR(tfm));
+               return 0;
+       }
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       sg_init_one(&sg, message, len);
+       crypto_hash_digest(&desc, &sg, len, out);
+       crypto_free_hash(tfm);
+
+       return 1;
+}
+
+int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
+                   uint8_t *key, uint32_t keylen, uint8_t *out)
+{
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
+       struct scatterlist sg;
+
+       tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               DWC_ERROR("Failed to load transform for hmac(sha256): %ld", PTR_ERR(tfm));
+               return 0;
+       }
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       sg_init_one(&sg, message, messagelen);
+       crypto_hash_setkey(tfm, key, keylen);
+       crypto_hash_digest(&desc, &sg, messagelen, out);
+       crypto_free_hash(tfm);
+
+       return 1;
+}
+
+#endif /* DWC_CRYPTOLIB */
+
+
+/* Byte Ordering Conversions */
+
+uint32_t DWC_CPU_TO_LE32(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_CPU_TO_BE32(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_LE32_TO_CPU(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_BE32_TO_CPU(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+
+       return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint16_t DWC_CPU_TO_LE16(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_CPU_TO_BE16(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_LE16_TO_CPU(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_BE16_TO_CPU(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+       return *p;
+#else
+       uint8_t *u_p = (uint8_t *)p;
+       return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+
+/* Registers */
+
+uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       return bus_space_read_4(io->iot, io->ioh, ior);
+}
+
+#if 0
+uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       return bus_space_read_8(io->iot, io->ioh, ior);
+}
+#endif
+
+void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_4(io->iot, io->ioh, ior, value);
+}
+
+#if 0
+void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_8(io->iot, io->ioh, ior, value);
+}
+#endif
+
+void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask,
+                     uint32_t set_mask)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_4(io->iot, io->ioh, ior,
+                         (bus_space_read_4(io->iot, io->ioh, ior) &
+                          ~clear_mask) | set_mask);
+}
+
+#if 0
+void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask,
+                     uint64_t set_mask)
+{
+       dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+       bus_size_t ior = (bus_size_t)reg;
+
+       bus_space_write_8(io->iot, io->ioh, ior,
+                         (bus_space_read_8(io->iot, io->ioh, ior) &
+                          ~clear_mask) | set_mask);
+}
+#endif
+
+
+/* Locking */
+
+dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
+{
+       struct simplelock *sl = DWC_ALLOC(sizeof(*sl));
+
+       if (!sl) {
+               DWC_ERROR("Cannot allocate memory for spinlock");
+               return NULL;
+       }
+
+       simple_lock_init(sl);
+       return (dwc_spinlock_t *)sl;
+}
+
+void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
+{
+       struct simplelock *sl = (struct simplelock *)lock;
+
+       DWC_FREE(sl);
+}
+
+void DWC_SPINLOCK(dwc_spinlock_t *lock)
+{
+       simple_lock((struct simplelock *)lock);
+}
+
+void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
+{
+       simple_unlock((struct simplelock *)lock);
+}
+
+void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
+{
+       simple_lock((struct simplelock *)lock);
+       *flags = splbio();
+}
+
+void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
+{
+       splx(flags);
+       simple_unlock((struct simplelock *)lock);
+}
+
+dwc_mutex_t *DWC_MUTEX_ALLOC(void)
+{
+       dwc_mutex_t *mutex = DWC_ALLOC(sizeof(struct lock));
+
+       if (!mutex) {
+               DWC_ERROR("Cannot allocate memory for mutex");
+               return NULL;
+       }
+
+       lockinit((struct lock *)mutex, 0, "dw3mtx", 0, 0);
+       return mutex;
+}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+#else
+void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
+{
+       DWC_FREE(mutex);
+}
+#endif
+
+void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
+{
+       lockmgr((struct lock *)mutex, LK_EXCLUSIVE, NULL);
+}
+
+int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
+{
+       int status;
+
+       status = lockmgr((struct lock *)mutex, LK_EXCLUSIVE | LK_NOWAIT, NULL);
+       return status == 0;
+}
+
+void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
+{
+       lockmgr((struct lock *)mutex, LK_RELEASE, NULL);
+}
+
+
+/* Timing */
+
+void DWC_UDELAY(uint32_t usecs)
+{
+       DELAY(usecs);
+}
+
+void DWC_MDELAY(uint32_t msecs)
+{
+       do {
+               DELAY(1000);
+       } while (--msecs);
+}
+
+void DWC_MSLEEP(uint32_t msecs)
+{
+       struct timeval tv;
+
+       tv.tv_sec = msecs / 1000;
+       tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+       tsleep(&tv, 0, "dw3slp", tvtohz(&tv));
+}
+
+uint32_t DWC_TIME(void)
+{
+       struct timeval tv;
+
+       microuptime(&tv);       // or getmicrouptime? (less precise, but faster)
+       return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+
+/* Timers */
+
+struct dwc_timer {
+       struct callout t;
+       char *name;
+       dwc_spinlock_t *lock;
+       dwc_timer_callback_t cb;
+       void *data;
+};
+
+dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
+{
+       dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
+
+       if (!t) {
+               DWC_ERROR("Cannot allocate memory for timer");
+               return NULL;
+       }
+
+       callout_init(&t->t);
+
+       t->name = DWC_STRDUP(name);
+       if (!t->name) {
+               DWC_ERROR("Cannot allocate memory for timer->name");
+               goto no_name;
+       }
+
+       t->lock = DWC_SPINLOCK_ALLOC();
+       if (!t->lock) {
+               DWC_ERROR("Cannot allocate memory for timer->lock");
+               goto no_lock;
+       }
+
+       t->cb = cb;
+       t->data = data;
+
+       return t;
+
+ no_lock:
+       DWC_FREE(t->name);
+ no_name:
+       DWC_FREE(t);
+
+       return NULL;
+}
+
+void DWC_TIMER_FREE(dwc_timer_t *timer)
+{
+       callout_stop(&timer->t);
+       DWC_SPINLOCK_FREE(timer->lock);
+       DWC_FREE(timer->name);
+       DWC_FREE(timer);
+}
+
+void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
+{
+       struct timeval tv;
+
+       tv.tv_sec = time / 1000;
+       tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+       callout_reset(&timer->t, tvtohz(&tv), timer->cb, timer->data);
+}
+
+void DWC_TIMER_CANCEL(dwc_timer_t *timer)
+{
+       callout_stop(&timer->t);
+}
+
+
+/* Wait Queues */
+
+struct dwc_waitq {
+       struct simplelock lock;
+       int abort;
+};
+
+dwc_waitq_t *DWC_WAITQ_ALLOC(void)
+{
+       dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+       if (!wq) {
+               DWC_ERROR("Cannot allocate memory for waitqueue");
+               return NULL;
+       }
+
+       simple_lock_init(&wq->lock);
+       wq->abort = 0;
+
+       return wq;
+}
+
+void DWC_WAITQ_FREE(dwc_waitq_t *wq)
+{
+       DWC_FREE(wq);
+}
+
+int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
+{
+       int ipl;
+       int result = 0;
+
+       simple_lock(&wq->lock);
+       ipl = splbio();
+
+       /* Skip the sleep if already aborted or triggered */
+       if (!wq->abort && !cond(data)) {
+               splx(ipl);
+               result = ltsleep(wq, PCATCH, "dw3wat", 0, &wq->lock); // infinite timeout
+               ipl = splbio();
+       }
+
+       if (result == 0) {                      // awoken
+               if (wq->abort) {
+                       wq->abort = 0;
+                       result = -DWC_E_ABORT;
+               } else {
+                       result = 0;
+               }
+
+               splx(ipl);
+               simple_unlock(&wq->lock);
+       } else {
+               wq->abort = 0;
+               splx(ipl);
+               simple_unlock(&wq->lock);
+
+               if (result == ERESTART) {       // signaled - restart
+                       result = -DWC_E_RESTART;
+               } else {                        // signaled - must be EINTR
+                       result = -DWC_E_ABORT;
+               }
+       }
+
+       return result;
+}
+
+int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+                              void *data, int32_t msecs)
+{
+       struct timeval tv, tv1, tv2;
+       int ipl;
+       int result = 0;
+
+       tv.tv_sec = msecs / 1000;
+       tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+
+       simple_lock(&wq->lock);
+       ipl = splbio();
+
+       /* Skip the sleep if already aborted or triggered */
+       if (!wq->abort && !cond(data)) {
+               splx(ipl);
+               getmicrouptime(&tv1);
+               result = ltsleep(wq, PCATCH, "dw3wto", tvtohz(&tv), &wq->lock);
+               getmicrouptime(&tv2);
+               ipl = splbio();
+       }
+
+       if (result == 0) {                      // awoken
+               if (wq->abort) {
+                       wq->abort = 0;
+                       splx(ipl);
+                       simple_unlock(&wq->lock);
+                       result = -DWC_E_ABORT;
+               } else {
+                       splx(ipl);
+                       simple_unlock(&wq->lock);
+
+                       tv2.tv_usec -= tv1.tv_usec;
+                       if (tv2.tv_usec < 0) {
+                               tv2.tv_usec += 1000000;
+                               tv2.tv_sec--;
+                       }
+
+                       tv2.tv_sec -= tv1.tv_sec;
+                       result = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
+                       result = msecs - result;
+                       if (result <= 0)
+                               result = 1;
+               }
+       } else {
+               wq->abort = 0;
+               splx(ipl);
+               simple_unlock(&wq->lock);
+
+               if (result == ERESTART) {       // signaled - restart
+                       result = -DWC_E_RESTART;
+
+               } else if (result == EINTR) {           // signaled - interrupt
+                       result = -DWC_E_ABORT;
+
+               } else {                                // timed out
+                       result = -DWC_E_TIMEOUT;
+               }
+       }
+
+       return result;
+}
+
+void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
+{
+       wakeup(wq);
+}
+
+void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
+{
+       int ipl;
+
+       simple_lock(&wq->lock);
+       ipl = splbio();
+       wq->abort = 1;
+       wakeup(wq);
+       splx(ipl);
+       simple_unlock(&wq->lock);
+}
+
+
+/* Threading */
+
+struct dwc_thread {
+       struct proc *proc;
+       int abort;
+};
+
+dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
+{
+       int retval;
+       dwc_thread_t *thread = DWC_ALLOC(sizeof(*thread));
+
+       if (!thread) {
+               return NULL;
+       }
+
+       thread->abort = 0;
+       retval = kthread_create1((void (*)(void *))func, data, &thread->proc,
+                                "%s", name);
+       if (retval) {
+               DWC_FREE(thread);
+               return NULL;
+       }
+
+       return thread;
+}
+
+int DWC_THREAD_STOP(dwc_thread_t *thread)
+{
+       int retval;
+
+       thread->abort = 1;
+       retval = tsleep(&thread->abort, 0, "dw3stp", 60 * hz);
+
+       if (retval == 0) {
+               /* DWC_THREAD_EXIT() will free the thread struct */
+               return 0;
+       }
+
+       /* NOTE: We leak the thread struct if thread doesn't die */
+
+       if (retval == EWOULDBLOCK) {
+               return -DWC_E_TIMEOUT;
+       }
+
+       return -DWC_E_UNKNOWN;
+}
+
+dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread)
+{
+       return thread->abort;
+}
+
+void DWC_THREAD_EXIT(dwc_thread_t *thread)
+{
+       wakeup(&thread->abort);
+       DWC_FREE(thread);
+       kthread_exit(0);
+}
+
+/* tasklets
+ - Runs in interrupt context (cannot sleep)
+ - Each tasklet runs on a single CPU
+ - Different tasklets can be running simultaneously on different CPUs
+ [ On NetBSD there is no corresponding mechanism, drivers don't have bottom-
+   halves. So we just call the callback directly from DWC_TASK_SCHEDULE() ]
+ */
+struct dwc_tasklet {
+       dwc_tasklet_callback_t cb;
+       void *data;
+};
+
+static void tasklet_callback(void *data)
+{
+       dwc_tasklet_t *task = (dwc_tasklet_t *)data;
+
+       task->cb(task->data);
+}
+
+dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
+{
+       dwc_tasklet_t *task = DWC_ALLOC(sizeof(*task));
+
+       if (task) {
+               task->cb = cb;
+               task->data = data;
+       } else {
+               DWC_ERROR("Cannot allocate memory for tasklet");
+       }
+
+       return task;
+}
+
+void DWC_TASK_FREE(dwc_tasklet_t *task)
+{
+       DWC_FREE(task);
+}
+
+void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
+{
+       tasklet_callback(task);
+}
+
+
+/* workqueues
+ - Runs in process context (can sleep)
+ */
+typedef struct work_container {
+       dwc_work_callback_t cb;
+       void *data;
+       dwc_workq_t *wq;
+       char *name;
+       int hz;
+       struct work task;
+} work_container_t;
+
+struct dwc_workq {
+       struct workqueue *taskq;
+       dwc_spinlock_t *lock;
+       dwc_waitq_t *waitq;
+       int pending;
+       struct work_container *container;
+};
+
+static void do_work(struct work *task, void *data)
+{
+       dwc_workq_t *wq = (dwc_workq_t *)data;
+       work_container_t *container = wq->container;
+       dwc_irqflags_t flags;
+
+       if (container->hz) {
+               tsleep(container, 0, "dw3wrk", container->hz);
+       }
+
+       container->cb(container->data);
+       DWC_DEBUG("Work done: %s, container=%p", container->name, container);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       if (container->name)
+               DWC_FREE(container->name);
+       DWC_FREE(container);
+       wq->pending--;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+}
+
+static int work_done(void *data)
+{
+       dwc_workq_t *workq = (dwc_workq_t *)data;
+
+       return workq->pending == 0;
+}
+
+int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
+{
+       return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
+}
+
+dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
+{
+       int result;
+       dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+       if (!wq) {
+               DWC_ERROR("Cannot allocate memory for workqueue");
+               return NULL;
+       }
+
+       result = workqueue_create(&wq->taskq, name, do_work, wq, 0 /*PWAIT*/,
+                                 IPL_BIO, 0);
+       if (result) {
+               DWC_ERROR("Cannot create workqueue");
+               goto no_taskq;
+       }
+
+       wq->pending = 0;
+
+       wq->lock = DWC_SPINLOCK_ALLOC();
+       if (!wq->lock) {
+               DWC_ERROR("Cannot allocate memory for spinlock");
+               goto no_lock;
+       }
+
+       wq->waitq = DWC_WAITQ_ALLOC();
+       if (!wq->waitq) {
+               DWC_ERROR("Cannot allocate memory for waitqueue");
+               goto no_waitq;
+       }
+
+       return wq;
+
+ no_waitq:
+       DWC_SPINLOCK_FREE(wq->lock);
+ no_lock:
+       workqueue_destroy(wq->taskq);
+ no_taskq:
+       DWC_FREE(wq);
+
+       return NULL;
+}
+
+void DWC_WORKQ_FREE(dwc_workq_t *wq)
+{
+#ifdef DEBUG
+       dwc_irqflags_t flags;
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+
+       if (wq->pending != 0) {
+               struct work_container *container = wq->container;
+
+               DWC_ERROR("Destroying work queue with pending work");
+
+               if (container && container->name) {
+                       DWC_ERROR("Work %s still pending", container->name);
+               }
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+#endif
+       DWC_WAITQ_FREE(wq->waitq);
+       DWC_SPINLOCK_FREE(wq->lock);
+       workqueue_destroy(wq->taskq);
+       DWC_FREE(wq);
+}
+
+void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
+                       char *format, ...)
+{
+       dwc_irqflags_t flags;
+       work_container_t *container;
+       static char name[128];
+       va_list args;
+
+       va_start(args, format);
+       DWC_VSNPRINTF(name, 128, format, args);
+       va_end(args);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending++;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+
+       container = DWC_ALLOC_ATOMIC(sizeof(*container));
+       if (!container) {
+               DWC_ERROR("Cannot allocate memory for container");
+               return;
+       }
+
+       container->name = DWC_STRDUP(name);
+       if (!container->name) {
+               DWC_ERROR("Cannot allocate memory for container->name");
+               DWC_FREE(container);
+               return;
+       }
+
+       container->cb = cb;
+       container->data = data;
+       container->wq = wq;
+       container->hz = 0;
+       wq->container = container;
+
+       DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+       workqueue_enqueue(wq->taskq, &container->task);
+}
+
+void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
+                               void *data, uint32_t time, char *format, ...)
+{
+       dwc_irqflags_t flags;
+       work_container_t *container;
+       static char name[128];
+       struct timeval tv;
+       va_list args;
+
+       va_start(args, format);
+       DWC_VSNPRINTF(name, 128, format, args);
+       va_end(args);
+
+       DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+       wq->pending++;
+       DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+       DWC_WAITQ_TRIGGER(wq->waitq);
+
+       container = DWC_ALLOC_ATOMIC(sizeof(*container));
+       if (!container) {
+               DWC_ERROR("Cannot allocate memory for container");
+               return;
+       }
+
+       container->name = DWC_STRDUP(name);
+       if (!container->name) {
+               DWC_ERROR("Cannot allocate memory for container->name");
+               DWC_FREE(container);
+               return;
+       }
+
+       container->cb = cb;
+       container->data = data;
+       container->wq = wq;
+       tv.tv_sec = time / 1000;
+       tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+       container->hz = tvtohz(&tv);
+       wq->container = container;
+
+       DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+       workqueue_enqueue(wq->taskq, &container->task);
+}
+
+int DWC_WORKQ_PENDING(dwc_workq_t *wq)
+{
+       return wq->pending;
+}
diff --git a/drivers/usb/host/dwc_common_port/dwc_crypto.c b/drivers/usb/host/dwc_common_port/dwc_crypto.c
new file mode 100644
index 0000000..3b03532
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_crypto.c
@@ -0,0 +1,308 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_crypto.c $
+ * $Revision: #5 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+
+/** @file
+ * This file contains the WUSB cryptographic routines.
+ */
+
+#ifdef DWC_CRYPTOLIB
+
+#include "dwc_crypto.h"
+#include "usb.h"
+
+#ifdef DEBUG
+static inline void dump_bytes(char *name, uint8_t *bytes, int len)
+{
+       int i;
+       DWC_PRINTF("%s: ", name);
+       for (i=0; i<len; i++) {
+               DWC_PRINTF("%02x ", bytes[i]);
+       }
+       DWC_PRINTF("\n");
+}
+#else
+#define dump_bytes(x...)
+#endif
+
+/* Display a block */
+void show_block(const u8 *blk, const char *prefix, const char *suffix, int a)
+{
+#ifdef DWC_DEBUG_CRYPTO
+       int i, blksize = 16;
+
+       DWC_DEBUG("%s", prefix);
+
+       if (suffix == NULL) {
+               suffix = "\n";
+               blksize = a;
+       }
+
+       for (i = 0; i < blksize; i++)
+               DWC_PRINT("%02x%s", *blk++, ((i & 3) == 3) ? "  " : " ");
+       DWC_PRINT(suffix);
+#endif
+}
+
+/**
+ * Encrypts an array of bytes using the AES encryption engine.
+ * If <code>dst</code> == <code>src</code>, then the bytes will be encrypted
+ * in-place.
+ *
+ * @return  0 on success, negative error code on error.
+ */
+int dwc_wusb_aes_encrypt(u8 *src, u8 *key, u8 *dst)
+{
+       u8 block_t[16];
+       DWC_MEMSET(block_t, 0, 16);
+
+       return DWC_AES_CBC(src, 16, key, 16, block_t, dst);
+}
+
+/**
+ * The CCM-MAC-FUNCTION described in section 6.5 of the WUSB spec.
+ * This function takes a data string and returns the encrypted CBC
+ * Counter-mode MIC.
+ *
+ * @param key     The 128-bit symmetric key.
+ * @param nonce   The CCM nonce.
+ * @param label   The unique 14-byte ASCII text label.
+ * @param bytes   The byte array to be encrypted.
+ * @param len     Length of the byte array.
+ * @param result  Byte array to receive the 8-byte encrypted MIC.
+ */
+void dwc_wusb_cmf(u8 *key, u8 *nonce,
+                 char *label, u8 *bytes, int len, u8 *result)
+{
+       u8 block_m[16];
+       u8 block_x[16];
+       u8 block_t[8];
+       int idx, blkNum;
+       u16 la = (u16)(len + 14);
+
+       /* Set the AES-128 key */
+       //dwc_aes_setkey(tfm, key, 16);
+
+       /* Fill block B0 from flags = 0x59, N, and l(m) = 0 */
+       block_m[0] = 0x59;
+       for (idx = 0; idx < 13; idx++)
+               block_m[idx + 1] = nonce[idx];
+       block_m[14] = 0;
+       block_m[15] = 0;
+
+       /* Produce the CBC IV */
+       dwc_wusb_aes_encrypt(block_m, key, block_x);
+       show_block(block_m, "CBC IV in: ", "\n", 0);
+       show_block(block_x, "CBC IV out:", "\n", 0);
+
+       /* Fill block B1 from l(a) = Blen + 14, and A */
+       block_x[0] ^= (u8)(la >> 8);
+       block_x[1] ^= (u8)la;
+       for (idx = 0; idx < 14; idx++)
+               block_x[idx + 2] ^= label[idx];
+       show_block(block_x, "After xor: ", "b1\n", 16);
+
+       dwc_wusb_aes_encrypt(block_x, key, block_x);
+       show_block(block_x, "After AES: ", "b1\n", 16);
+
+       idx = 0;
+       blkNum = 0;
+
+       /* Fill remaining blocks with B */
+       while (len-- > 0) {
+               block_x[idx] ^= *bytes++;
+               if (++idx >= 16) {
+                       idx = 0;
+                       show_block(block_x, "After xor: ", "\n", blkNum);
+                       dwc_wusb_aes_encrypt(block_x, key, block_x);
+                       show_block(block_x, "After AES: ", "\n", blkNum);
+                       blkNum++;
+               }
+       }
+
+       /* Handle partial last block */
+       if (idx > 0) {
+               show_block(block_x, "After xor: ", "\n", blkNum);
+               dwc_wusb_aes_encrypt(block_x, key, block_x);
+               show_block(block_x, "After AES: ", "\n", blkNum);
+       }
+
+       /* Save the MIC tag */
+       DWC_MEMCPY(block_t, block_x, 8);
+       show_block(block_t, "MIC tag  : ", NULL, 8);
+
+       /* Fill block A0 from flags = 0x01, N, and counter = 0 */
+       block_m[0] = 0x01;
+       block_m[14] = 0;
+       block_m[15] = 0;
+
+       /* Encrypt the counter */
+       dwc_wusb_aes_encrypt(block_m, key, block_x);
+       show_block(block_x, "CTR[MIC] : ", NULL, 8);
+
+       /* XOR with MIC tag */
+       for (idx = 0; idx < 8; idx++) {
+               block_t[idx] ^= block_x[idx];
+       }
+
+       /* Return result to caller */
+       DWC_MEMCPY(result, block_t, 8);
+       show_block(result, "CCM-MIC  : ", NULL, 8);
+
+}
+
+/**
+ * The PRF function described in section 6.5 of the WUSB spec. This function
+ * concatenates MIC values returned from dwc_cmf() to create a value of
+ * the requested length.
+ *
+ * @param prf_len  Length of the PRF function in bits (64, 128, or 256).
+ * @param key, nonce, label, bytes, len  Same as for dwc_cmf().
+ * @param result   Byte array to receive the result.
+ */
+void dwc_wusb_prf(int prf_len, u8 *key,
+                 u8 *nonce, char *label, u8 *bytes, int len, u8 *result)
+{
+       int i;
+
+       nonce[0] = 0;
+       for (i = 0; i < prf_len >> 6; i++, nonce[0]++) {
+               dwc_wusb_cmf(key, nonce, label, bytes, len, result);
+               result += 8;
+       }
+}
+
+/**
+ * Fills in CCM Nonce per the WUSB spec.
+ *
+ * @param[in] haddr Host address.
+ * @param[in] daddr Device address.
+ * @param[in] tkid Session Key(PTK) identifier.
+ * @param[out] nonce Pointer to where the CCM Nonce output is to be written.
+ */
+void dwc_wusb_fill_ccm_nonce(uint16_t haddr, uint16_t daddr, uint8_t *tkid,
+                            uint8_t *nonce)
+{
+
+       DWC_DEBUG("%s %x %x\n", __func__, daddr, haddr);
+
+       DWC_MEMSET(&nonce[0], 0, 16);
+
+       DWC_MEMCPY(&nonce[6], tkid, 3);
+       nonce[9] = daddr & 0xFF;
+       nonce[10] = (daddr >> 8) & 0xFF;
+       nonce[11] = haddr & 0xFF;
+       nonce[12] = (haddr >> 8) & 0xFF;
+
+       dump_bytes("CCM nonce", nonce, 16);
+}
+
+/**
+ * Generates a 16-byte cryptographic-grade random number for the Host/Device
+ * Nonce.
+ */
+void dwc_wusb_gen_nonce(uint16_t addr, uint8_t *nonce)
+{
+       uint8_t inonce[16];
+       uint32_t temp[4];
+
+       /* Fill in the Nonce */
+       DWC_MEMSET(&inonce[0], 0, sizeof(inonce));
+       inonce[9] = addr & 0xFF;
+       inonce[10] = (addr >> 8) & 0xFF;
+       inonce[11] = inonce[9];
+       inonce[12] = inonce[10];
+
+       /* Collect "randomness samples" */
+       DWC_RANDOM_BYTES((uint8_t *)temp, 16);
+
+       dwc_wusb_prf_128((uint8_t *)temp, nonce,
+                        "Random Numbers", (uint8_t *)temp, sizeof(temp),
+                        nonce);
+}
+
+/**
+ * Generates the Session Key (PTK) and Key Confirmation Key (KCK) per the
+ * WUSB spec.
+ *
+ * @param[in] ccm_nonce Pointer to CCM Nonce.
+ * @param[in] mk Master Key to derive the session from
+ * @param[in] hnonce Pointer to Host Nonce.
+ * @param[in] dnonce Pointer to Device Nonce.
+ * @param[out] kck Pointer to where the KCK output is to be written.
+ * @param[out] ptk Pointer to where the PTK output is to be written.
+ */
+void dwc_wusb_gen_key(uint8_t *ccm_nonce, uint8_t *mk, uint8_t *hnonce,
+                     uint8_t *dnonce, uint8_t *kck, uint8_t *ptk)
+{
+       uint8_t idata[32];
+       uint8_t odata[32];
+
+       dump_bytes("ck", mk, 16);
+       dump_bytes("hnonce", hnonce, 16);
+       dump_bytes("dnonce", dnonce, 16);
+
+       /* The data is the HNonce and DNonce concatenated */
+       DWC_MEMCPY(&idata[0], hnonce, 16);
+       DWC_MEMCPY(&idata[16], dnonce, 16);
+
+       dwc_wusb_prf_256(mk, ccm_nonce, "Pair-wise keys", idata, 32, odata);
+
+       /* Low 16 bytes of the result is the KCK, high 16 is the PTK */
+       DWC_MEMCPY(kck, &odata[0], 16);
+       DWC_MEMCPY(ptk, &odata[16], 16);
+
+       dump_bytes("kck", kck, 16);
+       dump_bytes("ptk", ptk, 16);
+}
+
+/**
+ * Generates the Message Integrity Code over the Handshake data per the
+ * WUSB spec.
+ *
+ * @param ccm_nonce Pointer to CCM Nonce.
+ * @param kck   Pointer to Key Confirmation Key.
+ * @param data  Pointer to Handshake data to be checked.
+ * @param mic   Pointer to where the MIC output is to be written.
+ */
+void dwc_wusb_gen_mic(uint8_t *ccm_nonce, uint8_t *kck,
+                     uint8_t *data, uint8_t *mic)
+{
+
+       dwc_wusb_prf_64(kck, ccm_nonce, "out-of-bandMIC",
+                       data, WUSB_HANDSHAKE_LEN_FOR_MIC, mic);
+}
+
+#endif /* DWC_CRYPTOLIB */
diff --git a/drivers/usb/host/dwc_common_port/dwc_crypto.h b/drivers/usb/host/dwc_common_port/dwc_crypto.h
new file mode 100644
index 0000000..26fcddc
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_crypto.h
@@ -0,0 +1,111 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_crypto.h $
+ * $Revision: #3 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+
+#ifndef _DWC_CRYPTO_H_
+#define _DWC_CRYPTO_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * This file contains declarations for the WUSB Cryptographic routines as
+ * defined in the WUSB spec.  They are only to be used internally by the DWC UWB
+ * modules.
+ */
+
+#include "dwc_os.h"
+
+int dwc_wusb_aes_encrypt(u8 *src, u8 *key, u8 *dst);
+
+void dwc_wusb_cmf(u8 *key, u8 *nonce,
+                 char *label, u8 *bytes, int len, u8 *result);
+void dwc_wusb_prf(int prf_len, u8 *key,
+                 u8 *nonce, char *label, u8 *bytes, int len, u8 *result);
+
+/**
+ * The PRF-64 function described in section 6.5 of the WUSB spec.
+ *
+ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
+ */
+static inline void dwc_wusb_prf_64(u8 *key, u8 *nonce,
+                                  char *label, u8 *bytes, int len, u8 *result)
+{
+       dwc_wusb_prf(64, key, nonce, label, bytes, len, result);
+}
+
+/**
+ * The PRF-128 function described in section 6.5 of the WUSB spec.
+ *
+ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
+ */
+static inline void dwc_wusb_prf_128(u8 *key, u8 *nonce,
+                                   char *label, u8 *bytes, int len, u8 *result)
+{
+       dwc_wusb_prf(128, key, nonce, label, bytes, len, result);
+}
+
+/**
+ * The PRF-256 function described in section 6.5 of the WUSB spec.
+ *
+ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
+ */
+static inline void dwc_wusb_prf_256(u8 *key, u8 *nonce,
+                                   char *label, u8 *bytes, int len, u8 *result)
+{
+       dwc_wusb_prf(256, key, nonce, label, bytes, len, result);
+}
+
+
+void dwc_wusb_fill_ccm_nonce(uint16_t haddr, uint16_t daddr, uint8_t *tkid,
+                              uint8_t *nonce);
+void dwc_wusb_gen_nonce(uint16_t addr,
+                         uint8_t *nonce);
+
+void dwc_wusb_gen_key(uint8_t *ccm_nonce, uint8_t *mk,
+                       uint8_t *hnonce, uint8_t *dnonce,
+                       uint8_t *kck, uint8_t *ptk);
+
+
+void dwc_wusb_gen_mic(uint8_t *ccm_nonce, uint8_t
+                       *kck, uint8_t *data, uint8_t *mic);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_CRYPTO_H_ */
diff --git a/drivers/usb/host/dwc_common_port/dwc_dh.c b/drivers/usb/host/dwc_common_port/dwc_dh.c
new file mode 100644
index 0000000..997f753
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_dh.c
@@ -0,0 +1,291 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_dh.c $
+ * $Revision: #3 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifdef DWC_CRYPTOLIB
+
+#ifndef CONFIG_MACH_IPMATE
+
+#include "dwc_dh.h"
+#include "dwc_modpow.h"
+
+#ifdef DEBUG
+/* This function prints out a buffer in the format described in the Association
+ * Model specification. */
+static void dh_dump(char *str, void *_num, int len)
+{
+       uint8_t *num = _num;
+       int i;
+       DWC_PRINTF("%s\n", str);
+       for (i = 0; i < len; i ++) {
+               DWC_PRINTF("%02x", num[i]);
+               if (((i + 1) % 2) == 0) DWC_PRINTF(" ");
+               if (((i + 1) % 26) == 0) DWC_PRINTF("\n");
+       }
+
+       DWC_PRINTF("\n");
+}
+#else
+#define dh_dump(_x...) do {; } while(0)
+#endif
+
+/* Constant g value */
+static __u32 dh_g[] = {
+       0x02000000,
+};
+
+/* Constant p value */
+static __u32 dh_p[] = {
+       0xFFFFFFFF, 0xFFFFFFFF, 0xA2DA0FC9, 0x34C26821, 0x8B62C6C4, 0xD11CDC80, 0x084E0229, 0x74CC678A,
+       0xA6BE0B02, 0x229B133B, 0x79084A51, 0xDD04348E, 0xB31995EF, 0x1B433ACD, 0x6D0A2B30, 0x37145FF2,
+       0x6D35E14F, 0x45C2516D, 0x76B585E4, 0xC67E5E62, 0xE9424CF4, 0x6BED37A6, 0xB65CFF0B, 0xEDB706F4,
+       0xFB6B38EE, 0xA59F895A, 0x11249FAE, 0xE61F4B7C, 0x51662849, 0x3D5BE4EC, 0xB87C00C2, 0x05BF63A1,
+       0x3648DA98, 0x9AD3551C, 0xA83F1669, 0x5FCF24FD, 0x235D6583, 0x96ADA3DC, 0x56F3621C, 0xBB528520,
+       0x0729D59E, 0x6D969670, 0x4E350C67, 0x0498BC4A, 0x086C74F1, 0x7C2118CA, 0x465E9032, 0x3BCE362E,
+       0x2C779EE3, 0x03860E18, 0xA283279B, 0x8FA207EC, 0xF05DC5B5, 0xC9524C6F, 0xF6CB2BDE, 0x18175895,
+       0x7C499539, 0xE56A95EA, 0x1826D215, 0x1005FA98, 0x5A8E7215, 0x2DC4AA8A, 0x0D1733AD, 0x337A5004,
+       0xAB2155A8, 0x64BA1CDF, 0x0485FBEC, 0x0AEFDB58, 0x5771EA8A, 0x7D0C065D, 0x850F97B3, 0xC7E4E1A6,
+       0x8CAEF5AB, 0xD73309DB, 0xE0948C1E, 0x9D61254A, 0x26D2E3CE, 0x6BEED21A, 0x06FA2FF1, 0x64088AD9,
+       0x730276D8, 0x646AC83E, 0x182B1F52, 0x0C207B17, 0x5717E1BB, 0x6C5D617A, 0xC0880977, 0xE246D9BA,
+       0xA04FE208, 0x31ABE574, 0xFC5BDB43, 0x8E10FDE0, 0x20D1824B, 0xCAD23AA9, 0xFFFFFFFF, 0xFFFFFFFF,
+};
+
+static void dh_swap_bytes(void *_in, void *_out, uint32_t len)
+{
+       uint8_t *in = _in;
+       uint8_t *out = _out;
+       int i;
+       for (i=0; i<len; i++) {
+               out[i] = in[len-1-i];
+       }
+}
+
+/* Computes the modular exponentiation (num^exp % mod).  num, exp, and mod are
+ * big endian numbers of size len, in bytes.  Each len value must be a multiple
+ * of 4. */
+int dwc_dh_modpow(void *mem_ctx, void *num, uint32_t num_len,
+                 void *exp, uint32_t exp_len,
+                 void *mod, uint32_t mod_len,
+                 void *out)
+{
+       /* modpow() takes little endian numbers.  AM uses big-endian.  This
+        * function swaps bytes of numbers before passing onto modpow. */
+
+       int retval = 0;
+       uint32_t *result;
+
+       uint32_t *bignum_num = dwc_alloc(mem_ctx, num_len + 4);
+       uint32_t *bignum_exp = dwc_alloc(mem_ctx, exp_len + 4);
+       uint32_t *bignum_mod = dwc_alloc(mem_ctx, mod_len + 4);
+
+       dh_swap_bytes(num, &bignum_num[1], num_len);
+       bignum_num[0] = num_len / 4;
+
+       dh_swap_bytes(exp, &bignum_exp[1], exp_len);
+       bignum_exp[0] = exp_len / 4;
+
+       dh_swap_bytes(mod, &bignum_mod[1], mod_len);
+       bignum_mod[0] = mod_len / 4;
+
+       result = dwc_modpow(mem_ctx, bignum_num, bignum_exp, bignum_mod);
+       if (!result) {
+               retval = -1;
+               goto dh_modpow_nomem;
+       }
+
+       dh_swap_bytes(&result[1], out, result[0] * 4);
+       dwc_free(mem_ctx, result);
+
+ dh_modpow_nomem:
+       dwc_free(mem_ctx, bignum_num);
+       dwc_free(mem_ctx, bignum_exp);
+       dwc_free(mem_ctx, bignum_mod);
+       return retval;
+}
+
+
+int dwc_dh_pk(void *mem_ctx, uint8_t nd, uint8_t *exp, uint8_t *pk, uint8_t *hash)
+{
+       int retval;
+       uint8_t m3[385];
+
+#ifndef DH_TEST_VECTORS
+       DWC_RANDOM_BYTES(exp, 32);
+#endif
+
+       /* Compute the pkd */
+       if ((retval = dwc_dh_modpow(mem_ctx, dh_g, 4,
+                                   exp, 32,
+                                   dh_p, 384, pk))) {
+               return retval;
+       }
+
+       m3[384] = nd;
+       DWC_MEMCPY(&m3[0], pk, 384);
+       DWC_SHA256(m3, 385, hash);
+
+       dh_dump("PK", pk, 384);
+       dh_dump("SHA-256(M3)", hash, 32);
+       return 0;
+}
+
+int dwc_dh_derive_keys(void *mem_ctx, uint8_t nd, uint8_t *pkh, uint8_t *pkd,
+                      uint8_t *exp, int is_host,
+                      char *dd, uint8_t *ck, uint8_t *kdk)
+{
+       int retval;
+       uint8_t mv[784];
+       uint8_t sha_result[32];
+       uint8_t dhkey[384];
+       uint8_t shared_secret[384];
+       char *message;
+       uint32_t vd;
+
+       uint8_t *pk;
+
+       if (is_host) {
+               pk = pkd;
+       }
+       else {
+               pk = pkh;
+       }
+
+       if ((retval = dwc_dh_modpow(mem_ctx, pk, 384,
+                                   exp, 32,
+                                   dh_p, 384, shared_secret))) {
+               return retval;
+       }
+       dh_dump("Shared Secret", shared_secret, 384);
+
+       DWC_SHA256(shared_secret, 384, dhkey);
+       dh_dump("DHKEY", dhkey, 384);
+
+       DWC_MEMCPY(&mv[0], pkd, 384);
+       DWC_MEMCPY(&mv[384], pkh, 384);
+       DWC_MEMCPY(&mv[768], "displayed digest", 16);
+       dh_dump("MV", mv, 784);
+
+       DWC_SHA256(mv, 784, sha_result);
+       dh_dump("SHA-256(MV)", sha_result, 32);
+       dh_dump("First 32-bits of SHA-256(MV)", sha_result, 4);
+
+       dh_swap_bytes(sha_result, &vd, 4);
+#ifdef DEBUG
+       DWC_PRINTF("Vd (decimal) = %d\n", vd);
+#endif
+
+       switch (nd) {
+       case 2:
+               vd = vd % 100;
+               DWC_SPRINTF(dd, "%02d", vd);
+               break;
+       case 3:
+               vd = vd % 1000;
+               DWC_SPRINTF(dd, "%03d", vd);
+               break;
+       case 4:
+               vd = vd % 10000;
+               DWC_SPRINTF(dd, "%04d", vd);
+               break;
+       }
+#ifdef DEBUG
+       DWC_PRINTF("Display Digits: %s\n", dd);
+#endif
+
+       message = "connection key";
+       DWC_HMAC_SHA256(message, DWC_STRLEN(message), dhkey, 32, sha_result);
+       dh_dump("HMAC(SHA-256, DHKey, connection key)", sha_result, 32);
+       DWC_MEMCPY(ck, sha_result, 16);
+
+       message = "key derivation key";
+       DWC_HMAC_SHA256(message, DWC_STRLEN(message), dhkey, 32, sha_result);
+       dh_dump("HMAC(SHA-256, DHKey, key derivation key)", sha_result, 32);
+       DWC_MEMCPY(kdk, sha_result, 32);
+
+       return 0;
+}
+
+
+#ifdef DH_TEST_VECTORS
+
+static __u8 dh_a[] = {
+       0x44, 0x00, 0x51, 0xd6,
+       0xf0, 0xb5, 0x5e, 0xa9,
+       0x67, 0xab, 0x31, 0xc6,
+       0x8a, 0x8b, 0x5e, 0x37,
+       0xd9, 0x10, 0xda, 0xe0,
+       0xe2, 0xd4, 0x59, 0xa4,
+       0x86, 0x45, 0x9c, 0xaa,
+       0xdf, 0x36, 0x75, 0x16,
+};
+
+static __u8 dh_b[] = {
+       0x5d, 0xae, 0xc7, 0x86,
+       0x79, 0x80, 0xa3, 0x24,
+       0x8c, 0xe3, 0x57, 0x8f,
+       0xc7, 0x5f, 0x1b, 0x0f,
+       0x2d, 0xf8, 0x9d, 0x30,
+       0x6f, 0xa4, 0x52, 0xcd,
+       0xe0, 0x7a, 0x04, 0x8a,
+       0xde, 0xd9, 0x26, 0x56,
+};
+
+void dwc_run_dh_test_vectors(void *mem_ctx)
+{
+       uint8_t pkd[384];
+       uint8_t pkh[384];
+       uint8_t hashd[32];
+       uint8_t hashh[32];
+       uint8_t ck[16];
+       uint8_t kdk[32];
+       char dd[5];
+
+       DWC_PRINTF("\n\n\nDH_TEST_VECTORS\n\n");
+
+       /* compute the PKd and SHA-256(PKd || Nd) */
+       DWC_PRINTF("Computing PKd\n");
+       dwc_dh_pk(mem_ctx, 2, dh_a, pkd, hashd);
+
+       /* compute the PKd and SHA-256(PKh || Nd) */
+       DWC_PRINTF("Computing PKh\n");
+       dwc_dh_pk(mem_ctx, 2, dh_b, pkh, hashh);
+
+       /* compute the dhkey */
+       dwc_dh_derive_keys(mem_ctx, 2, pkh, pkd, dh_a, 0, dd, ck, kdk);
+}
+#endif /* DH_TEST_VECTORS */
+
+#endif /* !CONFIG_MACH_IPMATE */
+
+#endif /* DWC_CRYPTOLIB */
diff --git a/drivers/usb/host/dwc_common_port/dwc_dh.h b/drivers/usb/host/dwc_common_port/dwc_dh.h
new file mode 100644
index 0000000..25c1cc0
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_dh.h
@@ -0,0 +1,106 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_dh.h $
+ * $Revision: #4 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifndef _DWC_DH_H_
+#define _DWC_DH_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "dwc_os.h"
+
+/** @file
+ *
+ * This file defines the common functions on device and host for performing
+ * numeric association as defined in the WUSB spec.  They are only to be
+ * used internally by the DWC UWB modules. */
+
+extern int dwc_dh_sha256(uint8_t *message, uint32_t len, uint8_t *out);
+extern int dwc_dh_hmac_sha256(uint8_t *message, uint32_t messagelen,
+                             uint8_t *key, uint32_t keylen,
+                             uint8_t *out);
+extern int dwc_dh_modpow(void *mem_ctx, void *num, uint32_t num_len,
+                        void *exp, uint32_t exp_len,
+                        void *mod, uint32_t mod_len,
+                        void *out);
+
+/** Computes PKD or PKH, and SHA-256(PKd || Nd)
+ *
+ * PK = g^exp mod p.
+ *
+ * Input:
+ * Nd = Number of digits on the device.
+ *
+ * Output:
+ * exp = A 32-byte buffer to be filled with a randomly generated number.
+ *       used as either A or B.
+ * pk = A 384-byte buffer to be filled with the PKH or PKD.
+ * hash = A 32-byte buffer to be filled with SHA-256(PK || ND).
+ */
+extern int dwc_dh_pk(void *mem_ctx, uint8_t nd, uint8_t *exp, uint8_t *pkd, uint8_t *hash);
+
+/** Computes the DHKEY, and VD.
+ *
+ * If called from host, then it will comput DHKEY=PKD^exp % p.
+ * If called from device, then it will comput DHKEY=PKH^exp % p.
+ *
+ * Input:
+ * pkd = The PKD value.
+ * pkh = The PKH value.
+ * exp = The A value (if device) or B value (if host) generated in dwc_wudev_dh_pk.
+ * is_host = Set to non zero if a WUSB host is calling this function.
+ *
+ * Output:
+
+ * dd = A pointer to an buffer to be set to the displayed digits string to be shown
+ *      to the user.  This buffer should be at 5 bytes long to hold 4 digits plus a
+ *      null termination character.  This buffer can be used directly for display.
+ * ck = A 16-byte buffer to be filled with the CK.
+ * kdk = A 32-byte buffer to be filled with the KDK.
+ */
+extern int dwc_dh_derive_keys(void *mem_ctx, uint8_t nd, uint8_t *pkh, uint8_t *pkd,
+                             uint8_t *exp, int is_host,
+                             char *dd, uint8_t *ck, uint8_t *kdk);
+
+#ifdef DH_TEST_VECTORS
+extern void dwc_run_dh_test_vectors(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_DH_H_ */
diff --git a/drivers/usb/host/dwc_common_port/dwc_list.h b/drivers/usb/host/dwc_common_port/dwc_list.h
new file mode 100644
index 0000000..89cc325
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_list.h
@@ -0,0 +1,594 @@
+/*     $OpenBSD: queue.h,v 1.26 2004/05/04 16:59:32 grange Exp $       */
+/*     $NetBSD: queue.h,v 1.11 1996/05/16 05:17:14 mycroft Exp $       */
+
+/*
+ * Copyright (c) 1991, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)queue.h     8.5 (Berkeley) 8/20/94
+ */
+
+#ifndef _DWC_LIST_H_
+#define _DWC_LIST_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * This file defines linked list operations.  It is derived from BSD with
+ * only the MACRO names being prefixed with DWC_.  This is because a few of
+ * these names conflict with those on Linux.  For documentation on use, see the
+ * inline comments in the source code.  The original license for this source
+ * code applies and is preserved in the dwc_list.h source file.
+ */
+
+/*
+ * This file defines five types of data structures: singly-linked lists,
+ * lists, simple queues, tail queues, and circular queues.
+ *
+ *
+ * A singly-linked list is headed by a single forward pointer. The elements
+ * are singly linked for minimum space and pointer manipulation overhead at
+ * the expense of O(n) removal for arbitrary elements. New elements can be
+ * added to the list after an existing element or at the head of the list.
+ * Elements being removed from the head of the list should use the explicit
+ * macro for this purpose for optimum efficiency. A singly-linked list may
+ * only be traversed in the forward direction.  Singly-linked lists are ideal
+ * for applications with large datasets and few or no removals or for
+ * implementing a LIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may only be traversed in the forward direction.
+ *
+ * A simple queue is headed by a pair of pointers, one the head of the
+ * list and the other to the tail of the list. The elements are singly
+ * linked to save space, so elements can only be removed from the
+ * head of the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the
+ * list. A simple queue may only be traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * A circle queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the list.
+ * A circle queue may be traversed in either direction, but has a more
+ * complex end of list detection.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+/*
+ * Double-linked List.
+ */
+
+typedef struct dwc_list_link {
+       struct dwc_list_link *next;
+       struct dwc_list_link *prev;
+} dwc_list_link_t;
+
+#define DWC_LIST_INIT(link) do {       \
+       (link)->next = (link);          \
+       (link)->prev = (link);          \
+} while (0)
+
+#define DWC_LIST_FIRST(link)   ((link)->next)
+#define DWC_LIST_LAST(link)    ((link)->prev)
+#define DWC_LIST_END(link)     (link)
+#define DWC_LIST_NEXT(link)    ((link)->next)
+#define DWC_LIST_PREV(link)    ((link)->prev)
+#define DWC_LIST_EMPTY(link)   \
+       (DWC_LIST_FIRST(link) == DWC_LIST_END(link))
+#define DWC_LIST_ENTRY(link, type, field)                      \
+       (type *)((uint8_t *)(link) - (size_t)(&((type *)0)->field))
+
+#if 0
+#define DWC_LIST_INSERT_HEAD(list, link) do {                  \
+       (link)->next = (list)->next;                            \
+       (link)->prev = (list);                                  \
+       (list)->next->prev = (link);                            \
+       (list)->next = (link);                                  \
+} while (0)
+
+#define DWC_LIST_INSERT_TAIL(list, link) do {                  \
+       (link)->next = (list);                                  \
+       (link)->prev = (list)->prev;                            \
+       (list)->prev->next = (link);                            \
+       (list)->prev = (link);                                  \
+} while (0)
+#else
+#define DWC_LIST_INSERT_HEAD(list, link) do {                  \
+       dwc_list_link_t *__next__ = (list)->next;               \
+       __next__->prev = (link);                                \
+       (link)->next = __next__;                                \
+       (link)->prev = (list);                                  \
+       (list)->next = (link);                                  \
+} while (0)
+
+#define DWC_LIST_INSERT_TAIL(list, link) do {                  \
+       dwc_list_link_t *__prev__ = (list)->prev;               \
+       (list)->prev = (link);                                  \
+       (link)->next = (list);                                  \
+       (link)->prev = __prev__;                                \
+       __prev__->next = (link);                                \
+} while (0)
+#endif
+
+#if 0
+static inline void __list_add(struct list_head *new,
+                              struct list_head *prev,
+                              struct list_head *next)
+{
+        next->prev = new;
+        new->next = next;
+        new->prev = prev;
+        prev->next = new;
+}
+
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+        __list_add(new, head, head->next);
+}
+
+static inline void list_add_tail(struct list_head *new, struct list_head *head)
+{
+        __list_add(new, head->prev, head);
+}
+
+static inline void __list_del(struct list_head * prev, struct list_head * next)
+{
+        next->prev = prev;
+        prev->next = next;
+}
+
+static inline void list_del(struct list_head *entry)
+{
+        __list_del(entry->prev, entry->next);
+        entry->next = LIST_POISON1;
+        entry->prev = LIST_POISON2;
+}
+#endif
+
+#define DWC_LIST_REMOVE(link) do {                             \
+       (link)->next->prev = (link)->prev;                      \
+       (link)->prev->next = (link)->next;                      \
+} while (0)
+
+#define DWC_LIST_REMOVE_INIT(link) do {                                \
+       DWC_LIST_REMOVE(link);                                  \
+       DWC_LIST_INIT(link);                                    \
+} while (0)
+
+#define DWC_LIST_MOVE_HEAD(list, link) do {                    \
+       DWC_LIST_REMOVE(link);                                  \
+       DWC_LIST_INSERT_HEAD(list, link);                       \
+} while (0)
+
+#define DWC_LIST_MOVE_TAIL(list, link) do {                    \
+       DWC_LIST_REMOVE(link);                                  \
+       DWC_LIST_INSERT_TAIL(list, link);                       \
+} while (0)
+
+#define DWC_LIST_FOREACH(var, list)                            \
+       for((var) = DWC_LIST_FIRST(list);                       \
+           (var) != DWC_LIST_END(list);                        \
+           (var) = DWC_LIST_NEXT(var))
+
+#define DWC_LIST_FOREACH_SAFE(var, var2, list)                 \
+       for((var) = DWC_LIST_FIRST(list), (var2) = DWC_LIST_NEXT(var);  \
+           (var) != DWC_LIST_END(list);                        \
+           (var) = (var2), (var2) = DWC_LIST_NEXT(var2))
+
+#define DWC_LIST_FOREACH_REVERSE(var, list)                    \
+       for((var) = DWC_LIST_LAST(list);                        \
+           (var) != DWC_LIST_END(list);                        \
+           (var) = DWC_LIST_PREV(var))
+
+/*
+ * Singly-linked List definitions.
+ */
+#define DWC_SLIST_HEAD(name, type)                                     \
+struct name {                                                          \
+       struct type *slh_first; /* first element */                     \
+}
+
+#define DWC_SLIST_HEAD_INITIALIZER(head)                               \
+       { NULL }
+
+#define DWC_SLIST_ENTRY(type)                                          \
+struct {                                                               \
+       struct type *sle_next;  /* next element */                      \
+}
+
+/*
+ * Singly-linked List access methods.
+ */
+#define DWC_SLIST_FIRST(head)  ((head)->slh_first)
+#define DWC_SLIST_END(head)            NULL
+#define DWC_SLIST_EMPTY(head)  (SLIST_FIRST(head) == SLIST_END(head))
+#define DWC_SLIST_NEXT(elm, field)     ((elm)->field.sle_next)
+
+#define DWC_SLIST_FOREACH(var, head, field)                            \
+       for((var) = SLIST_FIRST(head);                                  \
+           (var) != SLIST_END(head);                                   \
+           (var) = SLIST_NEXT(var, field))
+
+#define DWC_SLIST_FOREACH_PREVPTR(var, varp, head, field)              \
+       for((varp) = &SLIST_FIRST((head));                              \
+           ((var) = *(varp)) != SLIST_END(head);                       \
+           (varp) = &SLIST_NEXT((var), field))
+
+/*
+ * Singly-linked List functions.
+ */
+#define DWC_SLIST_INIT(head) {                                         \
+       SLIST_FIRST(head) = SLIST_END(head);                            \
+}
+
+#define DWC_SLIST_INSERT_AFTER(slistelm, elm, field) do {              \
+       (elm)->field.sle_next = (slistelm)->field.sle_next;             \
+       (slistelm)->field.sle_next = (elm);                             \
+} while (0)
+
+#define DWC_SLIST_INSERT_HEAD(head, elm, field) do {                   \
+       (elm)->field.sle_next = (head)->slh_first;                      \
+       (head)->slh_first = (elm);                                      \
+} while (0)
+
+#define DWC_SLIST_REMOVE_NEXT(head, elm, field) do {                   \
+       (elm)->field.sle_next = (elm)->field.sle_next->field.sle_next;  \
+} while (0)
+
+#define DWC_SLIST_REMOVE_HEAD(head, field) do {                                \
+       (head)->slh_first = (head)->slh_first->field.sle_next;          \
+} while (0)
+
+#define DWC_SLIST_REMOVE(head, elm, type, field) do {                  \
+       if ((head)->slh_first == (elm)) {                               \
+               SLIST_REMOVE_HEAD((head), field);                       \
+       }                                                               \
+       else {                                                          \
+               struct type *curelm = (head)->slh_first;                \
+               while( curelm->field.sle_next != (elm) )                \
+                       curelm = curelm->field.sle_next;                \
+               curelm->field.sle_next =                                \
+                   curelm->field.sle_next->field.sle_next;             \
+       }                                                               \
+} while (0)
+
+/*
+ * Simple queue definitions.
+ */
+#define DWC_SIMPLEQ_HEAD(name, type)                                   \
+struct name {                                                          \
+       struct type *sqh_first; /* first element */                     \
+       struct type **sqh_last; /* addr of last next element */         \
+}
+
+#define DWC_SIMPLEQ_HEAD_INITIALIZER(head)                             \
+       { NULL, &(head).sqh_first }
+
+#define DWC_SIMPLEQ_ENTRY(type)                                                \
+struct {                                                               \
+       struct type *sqe_next;  /* next element */                      \
+}
+
+/*
+ * Simple queue access methods.
+ */
+#define DWC_SIMPLEQ_FIRST(head)            ((head)->sqh_first)
+#define DWC_SIMPLEQ_END(head)      NULL
+#define DWC_SIMPLEQ_EMPTY(head)            (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
+#define DWC_SIMPLEQ_NEXT(elm, field)    ((elm)->field.sqe_next)
+
+#define DWC_SIMPLEQ_FOREACH(var, head, field)                          \
+       for((var) = SIMPLEQ_FIRST(head);                                \
+           (var) != SIMPLEQ_END(head);                                 \
+           (var) = SIMPLEQ_NEXT(var, field))
+
+/*
+ * Simple queue functions.
+ */
+#define DWC_SIMPLEQ_INIT(head) do {                                    \
+       (head)->sqh_first = NULL;                                       \
+       (head)->sqh_last = &(head)->sqh_first;                          \
+} while (0)
+
+#define DWC_SIMPLEQ_INSERT_HEAD(head, elm, field) do {                 \
+       if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)        \
+               (head)->sqh_last = &(elm)->field.sqe_next;              \
+       (head)->sqh_first = (elm);                                      \
+} while (0)
+
+#define DWC_SIMPLEQ_INSERT_TAIL(head, elm, field) do {                 \
+       (elm)->field.sqe_next = NULL;                                   \
+       *(head)->sqh_last = (elm);                                      \
+       (head)->sqh_last = &(elm)->field.sqe_next;                      \
+} while (0)
+
+#define DWC_SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {       \
+       if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
+               (head)->sqh_last = &(elm)->field.sqe_next;              \
+       (listelm)->field.sqe_next = (elm);                              \
+} while (0)
+
+#define DWC_SIMPLEQ_REMOVE_HEAD(head, field) do {                      \
+       if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
+               (head)->sqh_last = &(head)->sqh_first;                  \
+} while (0)
+
+/*
+ * Tail queue definitions.
+ */
+#define DWC_TAILQ_HEAD(name, type)                                     \
+struct name {                                                          \
+       struct type *tqh_first; /* first element */                     \
+       struct type **tqh_last; /* addr of last next element */         \
+}
+
+#define DWC_TAILQ_HEAD_INITIALIZER(head)                               \
+       { NULL, &(head).tqh_first }
+
+#define DWC_TAILQ_ENTRY(type)                                          \
+struct {                                                               \
+       struct type *tqe_next;  /* next element */                      \
+       struct type **tqe_prev; /* address of previous next element */  \
+}
+
+/*
+ * tail queue access methods
+ */
+#define DWC_TAILQ_FIRST(head)          ((head)->tqh_first)
+#define DWC_TAILQ_END(head)            NULL
+#define DWC_TAILQ_NEXT(elm, field)     ((elm)->field.tqe_next)
+#define DWC_TAILQ_LAST(head, headname)                                 \
+       (*(((struct headname *)((head)->tqh_last))->tqh_last))
+/* XXX */
+#define DWC_TAILQ_PREV(elm, headname, field)                           \
+       (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+#define DWC_TAILQ_EMPTY(head)                                          \
+       (TAILQ_FIRST(head) == TAILQ_END(head))
+
+#define DWC_TAILQ_FOREACH(var, head, field)                            \
+       for((var) = TAILQ_FIRST(head);                                  \
+           (var) != TAILQ_END(head);                                   \
+           (var) = TAILQ_NEXT(var, field))
+
+#define DWC_TAILQ_FOREACH_REVERSE(var, head, headname, field)          \
+       for((var) = TAILQ_LAST(head, headname);                         \
+           (var) != TAILQ_END(head);                                   \
+           (var) = TAILQ_PREV(var, headname, field))
+
+/*
+ * Tail queue functions.
+ */
+#define DWC_TAILQ_INIT(head) do {                                      \
+       (head)->tqh_first = NULL;                                       \
+       (head)->tqh_last = &(head)->tqh_first;                          \
+} while (0)
+
+#define DWC_TAILQ_INSERT_HEAD(head, elm, field) do {                   \
+       if (((elm)->field.tqe_next = (head)->tqh_first) != NULL)        \
+               (head)->tqh_first->field.tqe_prev =                     \
+                   &(elm)->field.tqe_next;                             \
+       else                                                            \
+               (head)->tqh_last = &(elm)->field.tqe_next;              \
+       (head)->tqh_first = (elm);                                      \
+       (elm)->field.tqe_prev = &(head)->tqh_first;                     \
+} while (0)
+
+#define DWC_TAILQ_INSERT_TAIL(head, elm, field) do {                   \
+       (elm)->field.tqe_next = NULL;                                   \
+       (elm)->field.tqe_prev = (head)->tqh_last;                       \
+       *(head)->tqh_last = (elm);                                      \
+       (head)->tqh_last = &(elm)->field.tqe_next;                      \
+} while (0)
+
+#define DWC_TAILQ_INSERT_AFTER(head, listelm, elm, field) do {         \
+       if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
+               (elm)->field.tqe_next->field.tqe_prev =                 \
+                   &(elm)->field.tqe_next;                             \
+       else                                                            \
+               (head)->tqh_last = &(elm)->field.tqe_next;              \
+       (listelm)->field.tqe_next = (elm);                              \
+       (elm)->field.tqe_prev = &(listelm)->field.tqe_next;             \
+} while (0)
+
+#define DWC_TAILQ_INSERT_BEFORE(listelm, elm, field) do {              \
+       (elm)->field.tqe_prev = (listelm)->field.tqe_prev;              \
+       (elm)->field.tqe_next = (listelm);                              \
+       *(listelm)->field.tqe_prev = (elm);                             \
+       (listelm)->field.tqe_prev = &(elm)->field.tqe_next;             \
+} while (0)
+
+#define DWC_TAILQ_REMOVE(head, elm, field) do {                                \
+       if (((elm)->field.tqe_next) != NULL)                            \
+               (elm)->field.tqe_next->field.tqe_prev =                 \
+                   (elm)->field.tqe_prev;                              \
+       else                                                            \
+               (head)->tqh_last = (elm)->field.tqe_prev;               \
+       *(elm)->field.tqe_prev = (elm)->field.tqe_next;                 \
+} while (0)
+
+#define DWC_TAILQ_REPLACE(head, elm, elm2, field) do {                 \
+       if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL)   \
+               (elm2)->field.tqe_next->field.tqe_prev =                \
+                   &(elm2)->field.tqe_next;                            \
+       else                                                            \
+               (head)->tqh_last = &(elm2)->field.tqe_next;             \
+       (elm2)->field.tqe_prev = (elm)->field.tqe_prev;                 \
+       *(elm2)->field.tqe_prev = (elm2);                               \
+} while (0)
+
+/*
+ * Circular queue definitions.
+ */
+#define DWC_CIRCLEQ_HEAD(name, type)                                   \
+struct name {                                                          \
+       struct type *cqh_first;         /* first element */             \
+       struct type *cqh_last;          /* last element */              \
+}
+
+#define DWC_CIRCLEQ_HEAD_INITIALIZER(head)                             \
+       { DWC_CIRCLEQ_END(&head), DWC_CIRCLEQ_END(&head) }
+
+#define DWC_CIRCLEQ_ENTRY(type)                                                \
+struct {                                                               \
+       struct type *cqe_next;          /* next element */              \
+       struct type *cqe_prev;          /* previous element */          \
+}
+
+/*
+ * Circular queue access methods
+ */
+#define DWC_CIRCLEQ_FIRST(head)                ((head)->cqh_first)
+#define DWC_CIRCLEQ_LAST(head)         ((head)->cqh_last)
+#define DWC_CIRCLEQ_END(head)          ((void *)(head))
+#define DWC_CIRCLEQ_NEXT(elm, field)   ((elm)->field.cqe_next)
+#define DWC_CIRCLEQ_PREV(elm, field)   ((elm)->field.cqe_prev)
+#define DWC_CIRCLEQ_EMPTY(head)                                                \
+       (DWC_CIRCLEQ_FIRST(head) == DWC_CIRCLEQ_END(head))
+
+#define DWC_CIRCLEQ_EMPTY_ENTRY(elm, field) (((elm)->field.cqe_next == NULL) && ((elm)->field.cqe_prev == NULL))
+
+#define DWC_CIRCLEQ_FOREACH(var, head, field)                          \
+       for((var) = DWC_CIRCLEQ_FIRST(head);                            \
+           (var) != DWC_CIRCLEQ_END(head);                             \
+           (var) = DWC_CIRCLEQ_NEXT(var, field))
+
+#define DWC_CIRCLEQ_FOREACH_SAFE(var, var2, head, field)                       \
+       for((var) = DWC_CIRCLEQ_FIRST(head), var2 = DWC_CIRCLEQ_NEXT(var, field); \
+           (var) != DWC_CIRCLEQ_END(head);                                     \
+           (var) = var2, var2 = DWC_CIRCLEQ_NEXT(var, field))
+
+#define DWC_CIRCLEQ_FOREACH_REVERSE(var, head, field)                  \
+       for((var) = DWC_CIRCLEQ_LAST(head);                             \
+           (var) != DWC_CIRCLEQ_END(head);                             \
+           (var) = DWC_CIRCLEQ_PREV(var, field))
+
+/*
+ * Circular queue functions.
+ */
+#define DWC_CIRCLEQ_INIT(head) do {                                    \
+       (head)->cqh_first = DWC_CIRCLEQ_END(head);                      \
+       (head)->cqh_last = DWC_CIRCLEQ_END(head);                       \
+} while (0)
+
+#define DWC_CIRCLEQ_INIT_ENTRY(elm, field) do {                                \
+       (elm)->field.cqe_next = NULL;                                   \
+       (elm)->field.cqe_prev = NULL;                                   \
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {       \
+       (elm)->field.cqe_next = (listelm)->field.cqe_next;              \
+       (elm)->field.cqe_prev = (listelm);                              \
+       if ((listelm)->field.cqe_next == DWC_CIRCLEQ_END(head))         \
+               (head)->cqh_last = (elm);                               \
+       else                                                            \
+               (listelm)->field.cqe_next->field.cqe_prev = (elm);      \
+       (listelm)->field.cqe_next = (elm);                              \
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {      \
+       (elm)->field.cqe_next = (listelm);                              \
+       (elm)->field.cqe_prev = (listelm)->field.cqe_prev;              \
+       if ((listelm)->field.cqe_prev == DWC_CIRCLEQ_END(head))         \
+               (head)->cqh_first = (elm);                              \
+       else                                                            \
+               (listelm)->field.cqe_prev->field.cqe_next = (elm);      \
+       (listelm)->field.cqe_prev = (elm);                              \
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_HEAD(head, elm, field) do {                 \
+       (elm)->field.cqe_next = (head)->cqh_first;                      \
+       (elm)->field.cqe_prev = DWC_CIRCLEQ_END(head);                  \
+       if ((head)->cqh_last == DWC_CIRCLEQ_END(head))                  \
+               (head)->cqh_last = (elm);                               \
+       else                                                            \
+               (head)->cqh_first->field.cqe_prev = (elm);              \
+       (head)->cqh_first = (elm);                                      \
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_TAIL(head, elm, field) do {                 \
+       (elm)->field.cqe_next = DWC_CIRCLEQ_END(head);                  \
+       (elm)->field.cqe_prev = (head)->cqh_last;                       \
+       if ((head)->cqh_first == DWC_CIRCLEQ_END(head))                 \
+               (head)->cqh_first = (elm);                              \
+       else                                                            \
+               (head)->cqh_last->field.cqe_next = (elm);               \
+       (head)->cqh_last = (elm);                                       \
+} while (0)
+
+#define DWC_CIRCLEQ_REMOVE(head, elm, field) do {                      \
+       if ((elm)->field.cqe_next == DWC_CIRCLEQ_END(head))             \
+               (head)->cqh_last = (elm)->field.cqe_prev;               \
+       else                                                            \
+               (elm)->field.cqe_next->field.cqe_prev =                 \
+                   (elm)->field.cqe_prev;                              \
+       if ((elm)->field.cqe_prev == DWC_CIRCLEQ_END(head))             \
+               (head)->cqh_first = (elm)->field.cqe_next;              \
+       else                                                            \
+               (elm)->field.cqe_prev->field.cqe_next =                 \
+                   (elm)->field.cqe_next;                              \
+} while (0)
+
+#define DWC_CIRCLEQ_REMOVE_INIT(head, elm, field) do {                 \
+       DWC_CIRCLEQ_REMOVE(head, elm, field);                           \
+       DWC_CIRCLEQ_INIT_ENTRY(elm, field);                             \
+} while (0)
+
+#define DWC_CIRCLEQ_REPLACE(head, elm, elm2, field) do {               \
+       if (((elm2)->field.cqe_next = (elm)->field.cqe_next) ==         \
+           DWC_CIRCLEQ_END(head))                                      \
+               (head).cqh_last = (elm2);                               \
+       else                                                            \
+               (elm2)->field.cqe_next->field.cqe_prev = (elm2);        \
+       if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) ==         \
+           DWC_CIRCLEQ_END(head))                                      \
+               (head).cqh_first = (elm2);                              \
+       else                                                            \
+               (elm2)->field.cqe_prev->field.cqe_next = (elm2);        \
+} while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_LIST_H_ */
diff --git a/drivers/usb/host/dwc_common_port/dwc_mem.c b/drivers/usb/host/dwc_common_port/dwc_mem.c
new file mode 100644
index 0000000..ad645ff
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_mem.c
@@ -0,0 +1,245 @@
+/* Memory Debugging */
+#ifdef DWC_DEBUG_MEMORY
+
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+struct allocation {
+       void *addr;
+       void *ctx;
+       char *func;
+       int line;
+       uint32_t size;
+       int dma;
+       DWC_CIRCLEQ_ENTRY(allocation) entry;
+};
+
+DWC_CIRCLEQ_HEAD(allocation_queue, allocation);
+
+struct allocation_manager {
+       void *mem_ctx;
+       struct allocation_queue allocations;
+
+       /* statistics */
+       int num;
+       int num_freed;
+       int num_active;
+       uint32_t total;
+       uint32_t cur;
+       uint32_t max;
+};
+
+static struct allocation_manager *manager = NULL;
+
+static int add_allocation(void *ctx, uint32_t size, char const *func, int line, void *addr,
+                         int dma)
+{
+       struct allocation *a;
+
+       DWC_ASSERT(manager != NULL, "manager not allocated");
+
+       a = __DWC_ALLOC_ATOMIC(manager->mem_ctx, sizeof(*a));
+       if (!a) {
+               return -DWC_E_NO_MEMORY;
+       }
+
+       a->func = __DWC_ALLOC_ATOMIC(manager->mem_ctx, DWC_STRLEN(func) + 1);
+       if (!a->func) {
+               __DWC_FREE(manager->mem_ctx, a);
+               return -DWC_E_NO_MEMORY;
+       }
+
+       DWC_MEMCPY(a->func, func, DWC_STRLEN(func) + 1);
+       a->addr = addr;
+       a->ctx = ctx;
+       a->line = line;
+       a->size = size;
+       a->dma = dma;
+       DWC_CIRCLEQ_INSERT_TAIL(&manager->allocations, a, entry);
+
+       /* Update stats */
+       manager->num++;
+       manager->num_active++;
+       manager->total += size;
+       manager->cur += size;
+
+       if (manager->max < manager->cur) {
+               manager->max = manager->cur;
+       }
+
+       return 0;
+}
+
+static struct allocation *find_allocation(void *ctx, void *addr)
+{
+       struct allocation *a;
+
+       DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
+               if (a->ctx == ctx && a->addr == addr) {
+                       return a;
+               }
+       }
+
+       return NULL;
+}
+
+static void free_allocation(void *ctx, void *addr, char const *func, int line)
+{
+       struct allocation *a = find_allocation(ctx, addr);
+
+       if (!a) {
+               DWC_ASSERT(0,
+                          "Free of address %p that was never allocated or already freed %s:%d",
+                          addr, func, line);
+               return;
+       }
+
+       DWC_CIRCLEQ_REMOVE(&manager->allocations, a, entry);
+
+       manager->num_active--;
+       manager->num_freed++;
+       manager->cur -= a->size;
+       __DWC_FREE(manager->mem_ctx, a->func);
+       __DWC_FREE(manager->mem_ctx, a);
+}
+
+int dwc_memory_debug_start(void *mem_ctx)
+{
+       DWC_ASSERT(manager == NULL, "Memory debugging has already started\n");
+
+       if (manager) {
+               return -DWC_E_BUSY;
+       }
+
+       manager = __DWC_ALLOC(mem_ctx, sizeof(*manager));
+       if (!manager) {
+               return -DWC_E_NO_MEMORY;
+       }
+
+       DWC_CIRCLEQ_INIT(&manager->allocations);
+       manager->mem_ctx = mem_ctx;
+       manager->num = 0;
+       manager->num_freed = 0;
+       manager->num_active = 0;
+       manager->total = 0;
+       manager->cur = 0;
+       manager->max = 0;
+
+       return 0;
+}
+
+void dwc_memory_debug_stop(void)
+{
+       struct allocation *a;
+
+       dwc_memory_debug_report();
+
+       DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
+               DWC_ERROR("Memory leaked from %s:%d\n", a->func, a->line);
+               free_allocation(a->ctx, a->addr, NULL, -1);
+       }
+
+       __DWC_FREE(manager->mem_ctx, manager);
+}
+
+void dwc_memory_debug_report(void)
+{
+       struct allocation *a;
+
+       DWC_PRINTF("\n\n\n----------------- Memory Debugging Report -----------------\n\n");
+       DWC_PRINTF("Num Allocations = %d\n", manager->num);
+       DWC_PRINTF("Freed = %d\n", manager->num_freed);
+       DWC_PRINTF("Active = %d\n", manager->num_active);
+       DWC_PRINTF("Current Memory Used = %d\n", manager->cur);
+       DWC_PRINTF("Total Memory Used = %d\n", manager->total);
+       DWC_PRINTF("Maximum Memory Used at Once = %d\n", manager->max);
+       DWC_PRINTF("Unfreed allocations:\n");
+
+       DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
+               DWC_PRINTF("    addr=%p, size=%d from %s:%d, DMA=%d\n",
+                          a->addr, a->size, a->func, a->line, a->dma);
+       }
+}
+
+/* The replacement functions */
+void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line)
+{
+       void *addr = __DWC_ALLOC(mem_ctx, size);
+
+       if (!addr) {
+               return NULL;
+       }
+
+       if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
+               __DWC_FREE(mem_ctx, addr);
+               return NULL;
+       }
+
+       return addr;
+}
+
+void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func,
+                            int line)
+{
+       void *addr = __DWC_ALLOC_ATOMIC(mem_ctx, size);
+
+       if (!addr) {
+               return NULL;
+       }
+
+       if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
+               __DWC_FREE(mem_ctx, addr);
+               return NULL;
+       }
+
+       return addr;
+}
+
+void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line)
+{
+       free_allocation(mem_ctx, addr, func, line);
+       __DWC_FREE(mem_ctx, addr);
+}
+
+void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
+                         char const *func, int line)
+{
+       void *addr = __DWC_DMA_ALLOC(dma_ctx, size, dma_addr);
+
+       if (!addr) {
+               return NULL;
+       }
+
+       if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
+               __DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
+               return NULL;
+       }
+
+       return addr;
+}
+
+void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size,
+                                dwc_dma_t *dma_addr, char const *func, int line)
+{
+       void *addr = __DWC_DMA_ALLOC_ATOMIC(dma_ctx, size, dma_addr);
+
+       if (!addr) {
+               return NULL;
+       }
+
+       if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
+               __DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
+               return NULL;
+       }
+
+       return addr;
+}
+
+void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
+                       dwc_dma_t dma_addr, char const *func, int line)
+{
+       free_allocation(dma_ctx, virt_addr, func, line);
+       __DWC_DMA_FREE(dma_ctx, size, virt_addr, dma_addr);
+}
+
+#endif /* DWC_DEBUG_MEMORY */
diff --git a/drivers/usb/host/dwc_common_port/dwc_modpow.c b/drivers/usb/host/dwc_common_port/dwc_modpow.c
new file mode 100644
index 0000000..b7c456b
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_modpow.c
@@ -0,0 +1,636 @@
+/* Bignum routines adapted from PUTTY sources.  PuTTY copyright notice follows.
+ *
+ * PuTTY is copyright 1997-2007 Simon Tatham.
+ *
+ * Portions copyright Robert de Bath, Joris van Rantwijk, Delian
+ * Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas Barry,
+ * Justin Bradford, Ben Harris, Malcolm Smith, Ahmad Khalifa, Markus
+ * Kuhn, and CORE SDI S.A.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
+ * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#ifdef DWC_CRYPTOLIB
+
+#ifndef CONFIG_MACH_IPMATE
+
+#include "dwc_modpow.h"
+
+#define BIGNUM_INT_MASK  0xFFFFFFFFUL
+#define BIGNUM_TOP_BIT   0x80000000UL
+#define BIGNUM_INT_BITS  32
+
+
+static void *snmalloc(void *mem_ctx, size_t n, size_t size)
+{
+    void *p;
+    size *= n;
+    if (size == 0) size = 1;
+    p = dwc_alloc(mem_ctx, size);
+    return p;
+}
+
+#define snewn(ctx, n, type) ((type *)snmalloc((ctx), (n), sizeof(type)))
+#define sfree dwc_free
+
+/*
+ * Usage notes:
+ *  * Do not call the DIVMOD_WORD macro with expressions such as array
+ *    subscripts, as some implementations object to this (see below).
+ *  * Note that none of the division methods below will cope if the
+ *    quotient won't fit into BIGNUM_INT_BITS. Callers should be careful
+ *    to avoid this case.
+ *    If this condition occurs, in the case of the x86 DIV instruction,
+ *    an overflow exception will occur, which (according to a correspondent)
+ *    will manifest on Windows as something like
+ *      0xC0000095: Integer overflow
+ *    The C variant won't give the right answer, either.
+ */
+
+#define MUL_WORD(w1, w2) ((BignumDblInt)w1 * w2)
+
+#if defined __GNUC__ && defined __i386__
+#define DIVMOD_WORD(q, r, hi, lo, w) \
+    __asm__("div %2" : \
+           "=d" (r), "=a" (q) : \
+           "r" (w), "d" (hi), "a" (lo))
+#else
+#define DIVMOD_WORD(q, r, hi, lo, w) do { \
+    BignumDblInt n = (((BignumDblInt)hi) << BIGNUM_INT_BITS) | lo; \
+    q = n / w; \
+    r = n % w; \
+} while (0)
+#endif
+
+//    q = n / w;                                
+//    r = n % w;                                
+
+#define BIGNUM_INT_BYTES (BIGNUM_INT_BITS / 8)
+
+#define BIGNUM_INTERNAL
+
+static Bignum newbn(void *mem_ctx, int length)
+{
+    Bignum b = snewn(mem_ctx, length + 1, BignumInt);
+    //if (!b)
+    //abort();                /* FIXME */
+    DWC_MEMSET(b, 0, (length + 1) * sizeof(*b));
+    b[0] = length;
+    return b;
+}
+
+void freebn(void *mem_ctx, Bignum b)
+{
+    /*
+     * Burn the evidence, just in case.
+     */
+    DWC_MEMSET(b, 0, sizeof(b[0]) * (b[0] + 1));
+    sfree(mem_ctx, b);
+}
+
+/*
+ * Compute c = a * b.
+ * Input is in the first len words of a and b.
+ * Result is returned in the first 2*len words of c.
+ */
+static void internal_mul(BignumInt *a, BignumInt *b,
+                        BignumInt *c, int len)
+{
+    int i, j;
+    BignumDblInt t;
+
+    for (j = 0; j < 2 * len; j++)
+       c[j] = 0;
+
+    for (i = len - 1; i >= 0; i--) {
+       t = 0;
+       for (j = len - 1; j >= 0; j--) {
+           t += MUL_WORD(a[i], (BignumDblInt) b[j]);
+           t += (BignumDblInt) c[i + j + 1];
+           c[i + j + 1] = (BignumInt) t;
+           t = t >> BIGNUM_INT_BITS;
+       }
+       c[i] = (BignumInt) t;
+    }
+}
+
+static void internal_add_shifted(BignumInt *number,
+                                unsigned n, int shift)
+{
+    int word = 1 + (shift / BIGNUM_INT_BITS);
+    int bshift = shift % BIGNUM_INT_BITS;
+    BignumDblInt addend;
+
+    addend = (BignumDblInt)n << bshift;
+
+    while (addend) {
+       addend += number[word];
+       number[word] = (BignumInt) addend & BIGNUM_INT_MASK;
+       addend >>= BIGNUM_INT_BITS;
+       word++;
+    }
+}
+
+/*
+ * Compute a = a % m.
+ * Input in first alen words of a and first mlen words of m.
+ * Output in first alen words of a
+ * (of which first alen-mlen words will be zero).
+ * The MSW of m MUST have its high bit set.
+ * Quotient is accumulated in the `quotient' array, which is a Bignum
+ * rather than the internal bigendian format. Quotient parts are shifted
+ * left by `qshift' before adding into quot.
+ */
+static void internal_mod(BignumInt *a, int alen,
+                        BignumInt *m, int mlen,
+                        BignumInt *quot, int qshift)
+{
+    BignumInt m0, m1;
+    unsigned int h;
+    int i, k;
+
+    m0 = m[0];
+    if (mlen > 1)
+       m1 = m[1];
+    else
+       m1 = 0;
+
+    for (i = 0; i <= alen - mlen; i++) {
+       BignumDblInt t;
+       unsigned int q, r, c, ai1;
+
+       if (i == 0) {
+           h = 0;
+       } else {
+           h = a[i - 1];
+           a[i - 1] = 0;
+       }
+
+       if (i == alen - 1)
+           ai1 = 0;
+       else
+           ai1 = a[i + 1];
+
+       /* Find q = h:a[i] / m0 */
+       if (h >= m0) {
+           /*
+            * Special case.
+            * 
+            * To illustrate it, suppose a BignumInt is 8 bits, and
+            * we are dividing (say) A1:23:45:67 by A1:B2:C3. Then
+            * our initial division will be 0xA123 / 0xA1, which
+            * will give a quotient of 0x100 and a divide overflow.
+            * However, the invariants in this division algorithm
+            * are not violated, since the full number A1:23:... is
+            * _less_ than the quotient prefix A1:B2:... and so the
+            * following correction loop would have sorted it out.
+            * 
+            * In this situation we set q to be the largest
+            * quotient we _can_ stomach (0xFF, of course).
+            */
+           q = BIGNUM_INT_MASK;
+       } else {
+           /* Macro doesn't want an array subscript expression passed
+            * into it (see definition), so use a temporary. */
+           BignumInt tmplo = a[i];
+           DIVMOD_WORD(q, r, h, tmplo, m0);
+
+           /* Refine our estimate of q by looking at
+            h:a[i]:a[i+1] / m0:m1 */
+           t = MUL_WORD(m1, q);
+           if (t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) {
+               q--;
+               t -= m1;
+               r = (r + m0) & BIGNUM_INT_MASK;     /* overflow? */
+               if (r >= (BignumDblInt) m0 &&
+                   t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) q--;
+           }
+       }
+
+       /* Subtract q * m from a[i...] */
+       c = 0;
+       for (k = mlen - 1; k >= 0; k--) {
+           t = MUL_WORD(q, m[k]);
+           t += c;
+           c = (unsigned)(t >> BIGNUM_INT_BITS);
+           if ((BignumInt) t > a[i + k])
+               c++;
+           a[i + k] -= (BignumInt) t;
+       }
+
+       /* Add back m in case of borrow */
+       if (c != h) {
+           t = 0;
+           for (k = mlen - 1; k >= 0; k--) {
+               t += m[k];
+               t += a[i + k];
+               a[i + k] = (BignumInt) t;
+               t = t >> BIGNUM_INT_BITS;
+           }
+           q--;
+       }
+       if (quot)
+           internal_add_shifted(quot, q, qshift + BIGNUM_INT_BITS * (alen - mlen - i));
+    }
+}
+
+/*
+ * Compute p % mod.
+ * The most significant word of mod MUST be non-zero.
+ * We assume that the result array is the same size as the mod array.
+ * We optionally write out a quotient if `quotient' is non-NULL.
+ * We can avoid writing out the result if `result' is NULL.
+ */
+void bigdivmod(void *mem_ctx, Bignum p, Bignum mod, Bignum result, Bignum quotient)
+{
+    BignumInt *n, *m;
+    int mshift;
+    int plen, mlen, i, j;
+
+    /* Allocate m of size mlen, copy mod to m */
+    /* We use big endian internally */
+    mlen = mod[0];
+    m = snewn(mem_ctx, mlen, BignumInt);
+    //if (!m)
+    //abort();                /* FIXME */
+    for (j = 0; j < mlen; j++)
+       m[j] = mod[mod[0] - j];
+
+    /* Shift m left to make msb bit set */
+    for (mshift = 0; mshift < BIGNUM_INT_BITS-1; mshift++)
+       if ((m[0] << mshift) & BIGNUM_TOP_BIT)
+           break;
+    if (mshift) {
+       for (i = 0; i < mlen - 1; i++)
+           m[i] = (m[i] << mshift) | (m[i + 1] >> (BIGNUM_INT_BITS - mshift));
+       m[mlen - 1] = m[mlen - 1] << mshift;
+    }
+
+    plen = p[0];
+    /* Ensure plen > mlen */
+    if (plen <= mlen)
+       plen = mlen + 1;
+
+    /* Allocate n of size plen, copy p to n */
+    n = snewn(mem_ctx, plen, BignumInt);
+    //if (!n)
+    //abort();                /* FIXME */
+    for (j = 0; j < plen; j++)
+       n[j] = 0;
+    for (j = 1; j <= (int)p[0]; j++)
+       n[plen - j] = p[j];
+
+    /* Main computation */
+    internal_mod(n, plen, m, mlen, quotient, mshift);
+
+    /* Fixup result in case the modulus was shifted */
+    if (mshift) {
+       for (i = plen - mlen - 1; i < plen - 1; i++)
+           n[i] = (n[i] << mshift) | (n[i + 1] >> (BIGNUM_INT_BITS - mshift));
+       n[plen - 1] = n[plen - 1] << mshift;
+       internal_mod(n, plen, m, mlen, quotient, 0);
+       for (i = plen - 1; i >= plen - mlen; i--)
+           n[i] = (n[i] >> mshift) | (n[i - 1] << (BIGNUM_INT_BITS - mshift));
+    }
+
+    /* Copy result to buffer */
+    if (result) {
+       for (i = 1; i <= (int)result[0]; i++) {
+           int j = plen - i;
+           result[i] = j >= 0 ? n[j] : 0;
+       }
+    }
+
+    /* Free temporary arrays */
+    for (i = 0; i < mlen; i++)
+       m[i] = 0;
+    sfree(mem_ctx, m);
+    for (i = 0; i < plen; i++)
+       n[i] = 0;
+    sfree(mem_ctx, n);
+}
+
+/*
+ * Simple remainder.
+ */
+Bignum bigmod(void *mem_ctx, Bignum a, Bignum b)
+{
+    Bignum r = newbn(mem_ctx, b[0]);
+    bigdivmod(mem_ctx, a, b, r, NULL);
+    return r;
+}
+
+/*
+ * Compute (base ^ exp) % mod.
+ */
+Bignum dwc_modpow(void *mem_ctx, Bignum base_in, Bignum exp, Bignum mod)
+{
+    BignumInt *a, *b, *n, *m;
+    int mshift;
+    int mlen, i, j;
+    Bignum base, result;
+
+    /*
+     * The most significant word of mod needs to be non-zero. It
+     * should already be, but let's make sure.
+     */
+    //assert(mod[mod[0]] != 0);
+
+    /*
+     * Make sure the base is smaller than the modulus, by reducing
+     * it modulo the modulus if not.
+     */
+    base = bigmod(mem_ctx, base_in, mod);
+
+    /* Allocate m of size mlen, copy mod to m */
+    /* We use big endian internally */
+    mlen = mod[0];
+    m = snewn(mem_ctx, mlen, BignumInt);
+    //if (!m)
+    //abort();                /* FIXME */
+    for (j = 0; j < mlen; j++)
+       m[j] = mod[mod[0] - j];
+
+    /* Shift m left to make msb bit set */
+    for (mshift = 0; mshift < BIGNUM_INT_BITS - 1; mshift++)
+       if ((m[0] << mshift) & BIGNUM_TOP_BIT)
+           break;
+    if (mshift) {
+       for (i = 0; i < mlen - 1; i++)
+           m[i] =
+               (m[i] << mshift) | (m[i + 1] >>
+                                   (BIGNUM_INT_BITS - mshift));
+       m[mlen - 1] = m[mlen - 1] << mshift;
+    }
+
+    /* Allocate n of size mlen, copy base to n */
+    n = snewn(mem_ctx, mlen, BignumInt);
+    //if (!n)
+    //abort();                /* FIXME */
+    i = mlen - base[0];
+    for (j = 0; j < i; j++)
+       n[j] = 0;
+    for (j = 0; j < base[0]; j++)
+       n[i + j] = base[base[0] - j];
+
+    /* Allocate a and b of size 2*mlen. Set a = 1 */
+    a = snewn(mem_ctx, 2 * mlen, BignumInt);
+    //if (!a)
+    //abort();                /* FIXME */
+    b = snewn(mem_ctx, 2 * mlen, BignumInt);
+    //if (!b)
+    //abort();                /* FIXME */
+    for (i = 0; i < 2 * mlen; i++)
+       a[i] = 0;
+    a[2 * mlen - 1] = 1;
+
+    /* Skip leading zero bits of exp. */
+    i = 0;
+    j = BIGNUM_INT_BITS - 1;
+    while (i < exp[0] && (exp[exp[0] - i] & (1 << j)) == 0) {
+       j--;
+       if (j < 0) {
+           i++;
+           j = BIGNUM_INT_BITS - 1;
+       }
+    }
+
+    /* Main computation */
+    while (i < exp[0]) {
+       while (j >= 0) {
+           internal_mul(a + mlen, a + mlen, b, mlen);
+           internal_mod(b, mlen * 2, m, mlen, NULL, 0);
+           if ((exp[exp[0] - i] & (1 << j)) != 0) {
+               internal_mul(b + mlen, n, a, mlen);
+               internal_mod(a, mlen * 2, m, mlen, NULL, 0);
+           } else {
+               BignumInt *t;
+               t = a;
+               a = b;
+               b = t;
+           }
+           j--;
+       }
+       i++;
+       j = BIGNUM_INT_BITS - 1;
+    }
+
+    /* Fixup result in case the modulus was shifted */
+    if (mshift) {
+       for (i = mlen - 1; i < 2 * mlen - 1; i++)
+           a[i] =
+               (a[i] << mshift) | (a[i + 1] >>
+                                   (BIGNUM_INT_BITS - mshift));
+       a[2 * mlen - 1] = a[2 * mlen - 1] << mshift;
+       internal_mod(a, mlen * 2, m, mlen, NULL, 0);
+       for (i = 2 * mlen - 1; i >= mlen; i--)
+           a[i] =
+               (a[i] >> mshift) | (a[i - 1] <<
+                                   (BIGNUM_INT_BITS - mshift));
+    }
+
+    /* Copy result to buffer */
+    result = newbn(mem_ctx, mod[0]);
+    for (i = 0; i < mlen; i++)
+       result[result[0] - i] = a[i + mlen];
+    while (result[0] > 1 && result[result[0]] == 0)
+       result[0]--;
+
+    /* Free temporary arrays */
+    for (i = 0; i < 2 * mlen; i++)
+       a[i] = 0;
+    sfree(mem_ctx, a);
+    for (i = 0; i < 2 * mlen; i++)
+       b[i] = 0;
+    sfree(mem_ctx, b);
+    for (i = 0; i < mlen; i++)
+       m[i] = 0;
+    sfree(mem_ctx, m);
+    for (i = 0; i < mlen; i++)
+       n[i] = 0;
+    sfree(mem_ctx, n);
+
+    freebn(mem_ctx, base);
+
+    return result;
+}
+
+
+#ifdef UNITTEST
+
+static __u32 dh_p[] = {
+       96,
+       0xFFFFFFFF,
+       0xFFFFFFFF,
+       0xA93AD2CA,
+       0x4B82D120,
+       0xE0FD108E,
+       0x43DB5BFC,
+       0x74E5AB31,
+       0x08E24FA0,
+       0xBAD946E2,
+       0x770988C0,
+       0x7A615D6C,
+       0xBBE11757,
+       0x177B200C,
+       0x521F2B18,
+       0x3EC86A64,
+       0xD8760273,
+       0xD98A0864,
+       0xF12FFA06,
+       0x1AD2EE6B,
+       0xCEE3D226,
+       0x4A25619D,
+       0x1E8C94E0,
+       0xDB0933D7,
+       0xABF5AE8C,
+       0xA6E1E4C7,
+       0xB3970F85,
+       0x5D060C7D,
+       0x8AEA7157,
+       0x58DBEF0A,
+       0xECFB8504,
+       0xDF1CBA64,
+       0xA85521AB,
+       0x04507A33,
+       0xAD33170D,
+       0x8AAAC42D,
+       0x15728E5A,
+       0x98FA0510,
+       0x15D22618,
+       0xEA956AE5,
+       0x3995497C,
+       0x95581718,
+       0xDE2BCBF6,
+       0x6F4C52C9,
+       0xB5C55DF0,
+       0xEC07A28F,
+       0x9B2783A2,
+       0x180E8603,
+       0xE39E772C,
+       0x2E36CE3B,
+       0x32905E46,
+       0xCA18217C,
+       0xF1746C08,
+       0x4ABC9804,
+       0x670C354E,
+       0x7096966D,
+       0x9ED52907,
+       0x208552BB,
+       0x1C62F356,
+       0xDCA3AD96,
+       0x83655D23,
+       0xFD24CF5F,
+       0x69163FA8,
+       0x1C55D39A,
+       0x98DA4836,
+       0xA163BF05,
+       0xC2007CB8,
+       0xECE45B3D,
+       0x49286651,
+       0x7C4B1FE6,
+       0xAE9F2411,
+       0x5A899FA5,
+       0xEE386BFB,
+       0xF406B7ED,
+       0x0BFF5CB6,
+       0xA637ED6B,
+       0xF44C42E9,
+       0x625E7EC6,
+       0xE485B576,
+       0x6D51C245,
+       0x4FE1356D,
+       0xF25F1437,
+       0x302B0A6D,
+       0xCD3A431B,
+       0xEF9519B3,
+       0x8E3404DD,
+       0x514A0879,
+       0x3B139B22,
+       0x020BBEA6,
+       0x8A67CC74,
+       0x29024E08,
+       0x80DC1CD1,
+       0xC4C6628B,
+       0x2168C234,
+       0xC90FDAA2,
+       0xFFFFFFFF,
+       0xFFFFFFFF,
+};
+
+static __u32 dh_a[] = {
+       8,
+       0xdf367516,
+       0x86459caa,
+       0xe2d459a4,
+       0xd910dae0,
+       0x8a8b5e37,
+       0x67ab31c6,
+       0xf0b55ea9,
+       0x440051d6,
+};
+
+static __u32 dh_b[] = {
+       8,
+       0xded92656,
+       0xe07a048a,
+       0x6fa452cd,
+       0x2df89d30,
+       0xc75f1b0f,
+       0x8ce3578f, 
+       0x7980a324,
+       0x5daec786,
+};
+
+static __u32 dh_g[] = {
+       1,
+       2,
+};
+
+int main(void)
+{
+       int i;
+       __u32 *k;
+       k = dwc_modpow(NULL, dh_g, dh_a, dh_p);
+
+       printf("\n\n");
+       for (i=0; i<k[0]; i++) {
+               __u32 word32 = k[k[0] - i];
+               __u16 l = word32 & 0xffff;
+               __u16 m = (word32 & 0xffff0000) >> 16;
+               printf("%04x %04x ", m, l);
+               if (!((i + 1)%13)) printf("\n");
+       }
+       printf("\n\n");
+
+       if ((k[0] == 0x60) && (k[1] == 0x28e490e5) && (k[0x60] == 0x5a0d3d4e)) {
+               printf("PASS\n\n");
+       }
+       else {
+               printf("FAIL\n\n");
+       }
+
+}
+
+#endif /* UNITTEST */
+
+#endif /* CONFIG_MACH_IPMATE */
+
+#endif /*DWC_CRYPTOLIB */
diff --git a/drivers/usb/host/dwc_common_port/dwc_modpow.h b/drivers/usb/host/dwc_common_port/dwc_modpow.h
new file mode 100644
index 0000000..64f00c2
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_modpow.h
@@ -0,0 +1,34 @@
+/*
+ * dwc_modpow.h
+ * See dwc_modpow.c for license and changes
+ */
+#ifndef _DWC_MODPOW_H
+#define _DWC_MODPOW_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "dwc_os.h"
+
+/** @file
+ *
+ * This file defines the module exponentiation function which is only used
+ * internally by the DWC UWB modules for calculation of PKs during numeric
+ * association.  The routine is taken from the PUTTY, an open source terminal
+ * emulator.  The PUTTY License is preserved in the dwc_modpow.c file.
+ *
+ */
+
+typedef uint32_t BignumInt;
+typedef uint64_t BignumDblInt;
+typedef BignumInt *Bignum;
+
+/* Compute modular exponentiaion */
+extern Bignum dwc_modpow(void *mem_ctx, Bignum base_in, Bignum exp, Bignum mod);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LINUX_BIGNUM_H */
diff --git a/drivers/usb/host/dwc_common_port/dwc_notifier.c b/drivers/usb/host/dwc_common_port/dwc_notifier.c
new file mode 100644
index 0000000..8b3772a
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_notifier.c
@@ -0,0 +1,319 @@
+#ifdef DWC_NOTIFYLIB
+
+#include "dwc_notifier.h"
+#include "dwc_list.h"
+
+typedef struct dwc_observer {
+       void *observer;
+       dwc_notifier_callback_t callback;
+       void *data;
+       char *notification;
+       DWC_CIRCLEQ_ENTRY(dwc_observer) list_entry;
+} observer_t;
+
+DWC_CIRCLEQ_HEAD(observer_queue, dwc_observer);
+
+typedef struct dwc_notifier {
+       void *mem_ctx;
+       void *object;
+       struct observer_queue observers;
+       DWC_CIRCLEQ_ENTRY(dwc_notifier) list_entry;
+} notifier_t;
+
+DWC_CIRCLEQ_HEAD(notifier_queue, dwc_notifier);
+
+typedef struct manager {
+       void *mem_ctx;
+       void *wkq_ctx;
+       dwc_workq_t *wq;
+//     dwc_mutex_t *mutex;
+       struct notifier_queue notifiers;
+} manager_t;
+
+static manager_t *manager = NULL;
+
+static int create_manager(void *mem_ctx, void *wkq_ctx)
+{
+       manager = dwc_alloc(mem_ctx, sizeof(manager_t));
+       if (!manager) {
+               return -DWC_E_NO_MEMORY;
+       }
+
+       DWC_CIRCLEQ_INIT(&manager->notifiers);
+
+       manager->wq = dwc_workq_alloc(wkq_ctx, "DWC Notification WorkQ");
+       if (!manager->wq) {
+               return -DWC_E_NO_MEMORY;
+       }
+
+       return 0;
+}
+
+static void free_manager(void)
+{
+       dwc_workq_free(manager->wq);
+
+       /* All notifiers must have unregistered themselves before this module
+        * can be removed.  Hitting this assertion indicates a programmer
+        * error. */
+       DWC_ASSERT(DWC_CIRCLEQ_EMPTY(&manager->notifiers),
+                  "Notification manager being freed before all notifiers have been removed");
+       dwc_free(manager->mem_ctx, manager);
+}
+
+#ifdef DEBUG
+static void dump_manager(void)
+{
+       notifier_t *n;
+       observer_t *o;
+
+       DWC_ASSERT(manager, "Notification manager not found");
+
+       DWC_DEBUG("List of all notifiers and observers:\n");
+       DWC_CIRCLEQ_FOREACH(n, &manager->notifiers, list_entry) {
+               DWC_DEBUG("Notifier %p has observers:\n", n->object);
+               DWC_CIRCLEQ_FOREACH(o, &n->observers, list_entry) {
+                       DWC_DEBUG("    %p watching %s\n", o->observer, o->notification);
+               }
+       }
+}
+#else
+#define dump_manager(...)
+#endif
+
+static observer_t *alloc_observer(void *mem_ctx, void *observer, char *notification,
+                                 dwc_notifier_callback_t callback, void *data)
+{
+       observer_t *new_observer = dwc_alloc(mem_ctx, sizeof(observer_t));
+
+       if (!new_observer) {
+               return NULL;
+       }
+
+       DWC_CIRCLEQ_INIT_ENTRY(new_observer, list_entry);
+       new_observer->observer = observer;
+       new_observer->notification = notification;
+       new_observer->callback = callback;
+       new_observer->data = data;
+       return new_observer;
+}
+
+static void free_observer(void *mem_ctx, observer_t *observer)
+{
+       dwc_free(mem_ctx, observer);
+}
+
+static notifier_t *alloc_notifier(void *mem_ctx, void *object)
+{
+       notifier_t *notifier;
+
+       if (!object) {
+               return NULL;
+       }
+
+       notifier = dwc_alloc(mem_ctx, sizeof(notifier_t));
+       if (!notifier) {
+               return NULL;
+       }
+
+       DWC_CIRCLEQ_INIT(&notifier->observers);
+       DWC_CIRCLEQ_INIT_ENTRY(notifier, list_entry);
+
+       notifier->mem_ctx = mem_ctx;
+       notifier->object = object;
+       return notifier;
+}
+
+static void free_notifier(notifier_t *notifier)
+{
+       observer_t *observer;
+
+       DWC_CIRCLEQ_FOREACH(observer, &notifier->observers, list_entry) {
+               free_observer(notifier->mem_ctx, observer);
+       }
+
+       dwc_free(notifier->mem_ctx, notifier);
+}
+
+static notifier_t *find_notifier(void *object)
+{
+       notifier_t *notifier;
+
+       DWC_ASSERT(manager, "Notification manager not found");
+
+       if (!object) {
+               return NULL;
+       }
+
+       DWC_CIRCLEQ_FOREACH(notifier, &manager->notifiers, list_entry) {
+               if (notifier->object == object) {
+                       return notifier;
+               }
+       }
+
+       return NULL;
+}
+
+int dwc_alloc_notification_manager(void *mem_ctx, void *wkq_ctx)
+{
+       return create_manager(mem_ctx, wkq_ctx);
+}
+
+void dwc_free_notification_manager(void)
+{
+       free_manager();
+}
+
+dwc_notifier_t *dwc_register_notifier(void *mem_ctx, void *object)
+{
+       notifier_t *notifier;
+
+       DWC_ASSERT(manager, "Notification manager not found");
+
+       notifier = find_notifier(object);
+       if (notifier) {
+               DWC_ERROR("Notifier %p is already registered\n", object);
+               return NULL;
+       }
+
+       notifier = alloc_notifier(mem_ctx, object);
+       if (!notifier) {
+               return NULL;
+       }
+
+       DWC_CIRCLEQ_INSERT_TAIL(&manager->notifiers, notifier, list_entry);
+
+       DWC_INFO("Notifier %p registered", object);
+       dump_manager();
+
+       return notifier;
+}
+
+void dwc_unregister_notifier(dwc_notifier_t *notifier)
+{
+       DWC_ASSERT(manager, "Notification manager not found");
+
+       if (!DWC_CIRCLEQ_EMPTY(&notifier->observers)) {
+               observer_t *o;
+
+               DWC_ERROR("Notifier %p has active observers when removing\n", notifier->object);
+               DWC_CIRCLEQ_FOREACH(o, &notifier->observers, list_entry) {
+                       DWC_DEBUGC("    %p watching %s\n", o->observer, o->notification);
+               }
+
+               DWC_ASSERT(DWC_CIRCLEQ_EMPTY(&notifier->observers),
+                          "Notifier %p has active observers when removing", notifier);
+       }
+
+       DWC_CIRCLEQ_REMOVE_INIT(&manager->notifiers, notifier, list_entry);
+       free_notifier(notifier);
+
+       DWC_INFO("Notifier unregistered");
+       dump_manager();
+}
+
+/* Add an observer to observe the notifier for a particular state, event, or notification. */
+int dwc_add_observer(void *observer, void *object, char *notification,
+                    dwc_notifier_callback_t callback, void *data)
+{
+       notifier_t *notifier = find_notifier(object);
+       observer_t *new_observer;
+
+       if (!notifier) {
+               DWC_ERROR("Notifier %p is not found when adding observer\n", object);
+               return -DWC_E_INVALID;
+       }
+
+       new_observer = alloc_observer(notifier->mem_ctx, observer, notification, callback, data);
+       if (!new_observer) {
+               return -DWC_E_NO_MEMORY;
+       }
+
+       DWC_CIRCLEQ_INSERT_TAIL(&notifier->observers, new_observer, list_entry);
+
+       DWC_INFO("Added observer %p to notifier %p observing notification %s, callback=%p, data=%p",
+                observer, object, notification, callback, data);
+
+       dump_manager();
+       return 0;
+}
+
+int dwc_remove_observer(void *observer)
+{
+       notifier_t *n;
+
+       DWC_ASSERT(manager, "Notification manager not found");
+
+       DWC_CIRCLEQ_FOREACH(n, &manager->notifiers, list_entry) {
+               observer_t *o;
+               observer_t *o2;
+
+               DWC_CIRCLEQ_FOREACH_SAFE(o, o2, &n->observers, list_entry) {
+                       if (o->observer == observer) {
+                               DWC_CIRCLEQ_REMOVE_INIT(&n->observers, o, list_entry);
+                               DWC_INFO("Removing observer %p from notifier %p watching notification %s:",
+                                        o->observer, n->object, o->notification);
+                               free_observer(n->mem_ctx, o);
+                       }
+               }
+       }
+
+       dump_manager();
+       return 0;
+}
+
+typedef struct callback_data {
+       void *mem_ctx;
+       dwc_notifier_callback_t cb;
+       void *observer;
+       void *data;
+       void *object;
+       char *notification;
+       void *notification_data;
+} cb_data_t;
+
+static void cb_task(void *data)
+{
+       cb_data_t *cb = (cb_data_t *)data;
+
+       cb->cb(cb->object, cb->notification, cb->observer, cb->notification_data, cb->data);
+       dwc_free(cb->mem_ctx, cb);
+}
+
+void dwc_notify(dwc_notifier_t *notifier, char *notification, void *notification_data)
+{
+       observer_t *o;
+
+       DWC_ASSERT(manager, "Notification manager not found");
+
+       DWC_CIRCLEQ_FOREACH(o, &notifier->observers, list_entry) {
+               int len = DWC_STRLEN(notification);
+
+               if (DWC_STRLEN(o->notification) != len) {
+                       continue;
+               }
+
+               if (DWC_STRNCMP(o->notification, notification, len) == 0) {
+                       cb_data_t *cb_data = dwc_alloc(notifier->mem_ctx, sizeof(cb_data_t));
+
+                       if (!cb_data) {
+                               DWC_ERROR("Failed to allocate callback data\n");
+                               return;
+                       }
+
+                       cb_data->mem_ctx = notifier->mem_ctx;
+                       cb_data->cb = o->callback;
+                       cb_data->observer = o->observer;
+                       cb_data->data = o->data;
+                       cb_data->object = notifier->object;
+                       cb_data->notification = notification;
+                       cb_data->notification_data = notification_data;
+                       DWC_DEBUGC("Observer found %p for notification %s\n", o->observer, notification);
+                       DWC_WORKQ_SCHEDULE(manager->wq, cb_task, cb_data,
+                                          "Notify callback from %p for Notification %s, to observer %p",
+                                          cb_data->object, notification, cb_data->observer);
+               }
+       }
+}
+
+#endif /* DWC_NOTIFYLIB */
diff --git a/drivers/usb/host/dwc_common_port/dwc_notifier.h b/drivers/usb/host/dwc_common_port/dwc_notifier.h
new file mode 100644
index 0000000..4a8cdfe
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_notifier.h
@@ -0,0 +1,122 @@
+
+#ifndef __DWC_NOTIFIER_H__
+#define __DWC_NOTIFIER_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "dwc_os.h"
+
+/** @file
+ *
+ * A simple implementation of the Observer pattern.  Any "module" can
+ * register as an observer or notifier.  The notion of "module" is abstract and
+ * can mean anything used to identify either an observer or notifier.  Usually
+ * it will be a pointer to a data structure which contains some state, ie an
+ * object.
+ *
+ * Before any notifiers can be added, the global notification manager must be
+ * brought up with dwc_alloc_notification_manager().
+ * dwc_free_notification_manager() will bring it down and free all resources.
+ * These would typically be called upon module load and unload.  The
+ * notification manager is a single global instance that handles all registered
+ * observable modules and observers so this should be done only once.
+ *
+ * A module can be observable by using Notifications to publicize some general
+ * information about it's state or operation.  It does not care who listens, or
+ * even if anyone listens, or what they do with the information.  The observable
+ * modules do not need to know any information about it's observers or their
+ * interface, or their state or data.
+ *
+ * Any module can register to emit Notifications.  It should publish a list of
+ * notifications that it can emit and their behavior, such as when they will get
+ * triggered, and what information will be provided to the observer.  Then it
+ * should register itself as an observable module. See dwc_register_notifier().
+ *
+ * Any module can observe any observable, registered module, provided it has a
+ * handle to the other module and knows what notifications to observe.  See
+ * dwc_add_observer().
+ *
+ * A function of type dwc_notifier_callback_t is called whenever a notification
+ * is triggered with one or more observers observing it.  This function is
+ * called in it's own process so it may sleep or block if needed.  It is
+ * guaranteed to be called sometime after the notification has occurred and will
+ * be called once per each time the notification is triggered.  It will NOT be
+ * called in the same process context used to trigger the notification.
+ *
+ * @section Limitiations
+ *
+ * Keep in mind that Notifications that can be triggered in rapid sucession may
+ * schedule too many processes too handle.  Be aware of this limitation when
+ * designing to use notifications, and only add notifications for appropriate
+ * observable information.
+ *
+ * Also Notification callbacks are not synchronous.  If you need to synchronize
+ * the behavior between module/observer you must use other means.  And perhaps
+ * that will mean Notifications are not the proper solution.
+ */
+
+struct dwc_notifier;
+typedef struct dwc_notifier dwc_notifier_t;
+
+/** The callback function must be of this type.
+ *
+ * @param object This is the object that is being observed.
+ * @param notification This is the notification that was triggered.
+ * @param observer This is the observer
+ * @param notification_data This is notification-specific data that the notifier
+ * has included in this notification.  The value of this should be published in
+ * the documentation of the observable module with the notifications.
+ * @param user_data This is any custom data that the observer provided when
+ * adding itself as an observer to the notification. */
+typedef void (*dwc_notifier_callback_t)(void *object, char *notification, void *observer,
+                                       void *notification_data, void *user_data);
+
+/** Brings up the notification manager. */
+extern int dwc_alloc_notification_manager(void *mem_ctx, void *wkq_ctx);
+/** Brings down the notification manager. */
+extern void dwc_free_notification_manager(void);
+
+/** This function registers an observable module.  A dwc_notifier_t object is
+ * returned to the observable module.  This is an opaque object that is used by
+ * the observable module to trigger notifications.  This object should only be
+ * accessible to functions that are authorized to trigger notifications for this
+ * module.  Observers do not need this object. */
+extern dwc_notifier_t *dwc_register_notifier(void *mem_ctx, void *object);
+
+/** This function unregisters an observable module.  All observers have to be
+ * removed prior to unregistration. */
+extern void dwc_unregister_notifier(dwc_notifier_t *notifier);
+
+/** Add a module as an observer to the observable module.  The observable module
+ * needs to have previously registered with the notification manager.
+ *
+ * @param observer The observer module
+ * @param object The module to observe
+ * @param notification The notification to observe
+ * @param callback The callback function to call
+ * @param user_data Any additional user data to pass into the callback function */
+extern int dwc_add_observer(void *observer, void *object, char *notification,
+                           dwc_notifier_callback_t callback, void *user_data);
+
+/** Removes the specified observer from all notifications that it is currently
+ * observing. */
+extern int dwc_remove_observer(void *observer);
+
+/** This function triggers a Notification.  It should be called by the
+ * observable module, or any module or library which the observable module
+ * allows to trigger notification on it's behalf.  Such as the dwc_cc_t.
+ *
+ * dwc_notify is a non-blocking function.  Callbacks are scheduled called in
+ * their own process context for each trigger.  Callbacks can be blocking.
+ * dwc_notify can be called from interrupt context if needed.
+ *
+ */
+void dwc_notify(dwc_notifier_t *notifier, char *notification, void *notification_data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __DWC_NOTIFIER_H__ */
diff --git a/drivers/usb/host/dwc_common_port/dwc_os.h b/drivers/usb/host/dwc_common_port/dwc_os.h
new file mode 100644
index 0000000..308ddd5
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/dwc_os.h
@@ -0,0 +1,1260 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_os.h $
+ * $Revision: #14 $
+ * $Date: 2010/11/04 $
+ * $Change: 1621695 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifndef _DWC_OS_H_
+#define _DWC_OS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * DWC portability library, low level os-wrapper functions
+ *
+ */
+
+/* These basic types need to be defined by some OS header file or custom header
+ * file for your specific target architecture.
+ *
+ * uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, uint64_t, int64_t
+ *
+ * Any custom or alternate header file must be added and enabled here.
+ */
+
+#ifdef DWC_LINUX
+# include <linux/types.h>
+# ifdef CONFIG_DEBUG_MUTEXES
+#  include <linux/mutex.h>
+# endif
+# include <linux/errno.h>
+# include <stdarg.h>
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+# include <os_dep.h>
+#endif
+
+
+/** @name Primitive Types and Values */
+
+/** We define a boolean type for consistency.  Can be either YES or NO */
+typedef uint8_t dwc_bool_t;
+#define YES  1
+#define NO   0
+
+#ifdef DWC_LINUX
+
+/** @name Error Codes */
+#define DWC_E_INVALID          EINVAL
+#define DWC_E_NO_MEMORY                ENOMEM
+#define DWC_E_NO_DEVICE                ENODEV
+#define DWC_E_NOT_SUPPORTED    EOPNOTSUPP
+#define DWC_E_TIMEOUT          ETIMEDOUT
+#define DWC_E_BUSY             EBUSY
+#define DWC_E_AGAIN            EAGAIN
+#define DWC_E_RESTART          ERESTART
+#define DWC_E_ABORT            ECONNABORTED
+#define DWC_E_SHUTDOWN         ESHUTDOWN
+#define DWC_E_NO_DATA          ENODATA
+#define DWC_E_DISCONNECT       ECONNRESET
+#define DWC_E_UNKNOWN          EINVAL
+#define DWC_E_NO_STREAM_RES    ENOSR
+#define DWC_E_COMMUNICATION    ECOMM
+#define DWC_E_OVERFLOW         EOVERFLOW
+#define DWC_E_PROTOCOL         EPROTO
+#define DWC_E_IN_PROGRESS      EINPROGRESS
+#define DWC_E_PIPE             EPIPE
+#define DWC_E_IO               EIO
+#define DWC_E_NO_SPACE         ENOSPC
+
+#else
+
+/** @name Error Codes */
+#define DWC_E_INVALID          1001
+#define DWC_E_NO_MEMORY                1002
+#define DWC_E_NO_DEVICE                1003
+#define DWC_E_NOT_SUPPORTED    1004
+#define DWC_E_TIMEOUT          1005
+#define DWC_E_BUSY             1006
+#define DWC_E_AGAIN            1007
+#define DWC_E_RESTART          1008
+#define DWC_E_ABORT            1009
+#define DWC_E_SHUTDOWN         1010
+#define DWC_E_NO_DATA          1011
+#define DWC_E_DISCONNECT       2000
+#define DWC_E_UNKNOWN          3000
+#define DWC_E_NO_STREAM_RES    4001
+#define DWC_E_COMMUNICATION    4002
+#define DWC_E_OVERFLOW         4003
+#define DWC_E_PROTOCOL         4004
+#define DWC_E_IN_PROGRESS      4005
+#define DWC_E_PIPE             4006
+#define DWC_E_IO               4007
+#define DWC_E_NO_SPACE         4008
+
+#endif
+
+
+/** @name Tracing/Logging Functions
+ *
+ * These function provide the capability to add tracing, debugging, and error
+ * messages, as well exceptions as assertions.  The WUDEV uses these
+ * extensively.  These could be logged to the main console, the serial port, an
+ * internal buffer, etc.  These functions could also be no-op if they are too
+ * expensive on your system.  By default undefining the DEBUG macro already
+ * no-ops some of these functions. */
+
+/** Returns non-zero if in interrupt context. */
+extern dwc_bool_t DWC_IN_IRQ(void);
+#define dwc_in_irq DWC_IN_IRQ
+
+/** Returns "IRQ" if DWC_IN_IRQ is true. */
+static inline char *dwc_irq(void) {
+       return DWC_IN_IRQ() ? "IRQ" : "";
+}
+
+/** Returns non-zero if in bottom-half context. */
+extern dwc_bool_t DWC_IN_BH(void);
+#define dwc_in_bh DWC_IN_BH
+
+/** Returns "BH" if DWC_IN_BH is true. */
+static inline char *dwc_bh(void) {
+       return DWC_IN_BH() ? "BH" : "";
+}
+
+/**
+ * A vprintf() clone.  Just call vprintf if you've got it.
+ */
+extern void DWC_VPRINTF(char *format, va_list args);
+#define dwc_vprintf DWC_VPRINTF
+
+/**
+ * A vsnprintf() clone.  Just call vprintf if you've got it.
+ */
+extern int DWC_VSNPRINTF(char *str, int size, char *format, va_list args);
+#define dwc_vsnprintf DWC_VSNPRINTF
+
+/**
+ * printf() clone.  Just call printf if you've go it.
+ */
+extern void DWC_PRINTF(char *format, ...)
+/* This provides compiler level static checking of the parameters if you're
+ * using GCC. */
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 1, 2)));
+#else
+       ;
+#endif
+#define dwc_printf DWC_PRINTF
+
+/**
+ * sprintf() clone.  Just call sprintf if you've got it.
+ */
+extern int DWC_SPRINTF(char *string, char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 2, 3)));
+#else
+       ;
+#endif
+#define dwc_sprintf DWC_SPRINTF
+
+/**
+ * snprintf() clone.  Just call snprintf if you've got it.
+ */
+extern int DWC_SNPRINTF(char *string, int size, char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 3, 4)));
+#else
+       ;
+#endif
+#define dwc_snprintf DWC_SNPRINTF
+
+/**
+ * Prints a WARNING message.  On systems that don't differentiate between
+ * warnings and regular log messages, just print it.  Indicates that something
+ * may be wrong with the driver.  Works like printf().
+ *
+ * Use the DWC_WARN macro to call this function.
+ */
+extern void __DWC_WARN(char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 1, 2)));
+#else
+       ;
+#endif
+
+/**
+ * Prints an error message.  On systems that don't differentiate between errors
+ * and regular log messages, just print it.  Indicates that something went wrong
+ * with the driver.  Works like printf().
+ *
+ * Use the DWC_ERROR macro to call this function.
+ */
+extern void __DWC_ERROR(char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 1, 2)));
+#else
+       ;
+#endif
+
+/**
+ * Prints an exception error message and takes some user-defined action such as
+ * print out a backtrace or trigger a breakpoint.  Indicates that something went
+ * abnormally wrong with the driver such as programmer error, or other
+ * exceptional condition.  It should not be ignored so even on systems without
+ * printing capability, some action should be taken to notify the developer of
+ * it.  Works like printf().
+ */
+extern void DWC_EXCEPTION(char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 1, 2)));
+#else
+       ;
+#endif
+#define dwc_exception DWC_EXCEPTION
+
+#ifndef DWC_OTG_DEBUG_LEV
+#define DWC_OTG_DEBUG_LEV 0
+#endif
+   
+#ifdef DEBUG
+/**
+ * Prints out a debug message.  Used for logging/trace messages.
+ *
+ * Use the DWC_DEBUG macro to call this function
+ */
+extern void __DWC_DEBUG(char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 1, 2)));
+#else
+       ;
+#endif
+#else
+#define __DWC_DEBUG printk
+#endif
+
+/**
+ * Prints out a Debug message.
+ */
+#define DWC_DEBUG(_format, _args...) __DWC_DEBUG("DEBUG:%s:%s: " _format "\n", \
+                                                __func__, dwc_irq(), ## _args)
+#define dwc_debug DWC_DEBUG
+/**
+ * Prints out a Debug message if enabled at compile time.
+ */
+#if DWC_OTG_DEBUG_LEV > 0
+#define DWC_DEBUGC(_format, _args...) DWC_DEBUG(_format, ##_args )
+#else
+#define DWC_DEBUGC(_format, _args...)
+#endif
+#define dwc_debugc DWC_DEBUGC
+/**
+ * Prints out an informative message.
+ */
+#define DWC_INFO(_format, _args...) DWC_PRINTF("INFO:%s: " _format "\n", \
+                                              dwc_irq(), ## _args)
+#define dwc_info DWC_INFO
+/**
+ * Prints out an informative message if enabled at compile time.
+ */
+#if DWC_OTG_DEBUG_LEV > 1
+#define DWC_INFOC(_format, _args...) DWC_INFO(_format, ##_args )
+#else
+#define DWC_INFOC(_format, _args...)
+#endif
+#define dwc_infoc DWC_INFOC
+/**
+ * Prints out a warning message.
+ */
+#define DWC_WARN(_format, _args...) __DWC_WARN("WARN:%s:%s:%d: " _format "\n", \
+                                       dwc_irq(), __func__, __LINE__, ## _args)
+#define dwc_warn DWC_WARN
+/**
+ * Prints out an error message.
+ */
+#define DWC_ERROR(_format, _args...) __DWC_ERROR("ERROR:%s:%s:%d: " _format "\n", \
+                                       dwc_irq(), __func__, __LINE__, ## _args)
+#define dwc_error DWC_ERROR
+
+#define DWC_PROTO_ERROR(_format, _args...) __DWC_WARN("ERROR:%s:%s:%d: " _format "\n", \
+                                               dwc_irq(), __func__, __LINE__, ## _args)
+#define dwc_proto_error DWC_PROTO_ERROR
+
+#ifdef DEBUG
+/** Prints out a exception error message if the _expr expression fails.  Disabled
+ * if DEBUG is not enabled. */
+#define DWC_ASSERT(_expr, _format, _args...) do { \
+       if (!(_expr)) { DWC_EXCEPTION("%s:%s:%d: " _format "\n", dwc_irq(), \
+                                     __FILE__, __LINE__, ## _args); } \
+       } while (0)
+#else
+#define DWC_ASSERT(_x...)
+#endif
+#define dwc_assert DWC_ASSERT
+
+
+/** @name Byte Ordering
+ * The following functions are for conversions between processor's byte ordering
+ * and specific ordering you want.
+ */
+
+/** Converts 32 bit data in CPU byte ordering to little endian. */
+extern uint32_t DWC_CPU_TO_LE32(uint32_t *p);
+#define dwc_cpu_to_le32 DWC_CPU_TO_LE32
+
+/** Converts 32 bit data in CPU byte orderint to big endian. */
+extern uint32_t DWC_CPU_TO_BE32(uint32_t *p);
+#define dwc_cpu_to_be32 DWC_CPU_TO_BE32
+
+/** Converts 32 bit little endian data to CPU byte ordering. */
+extern uint32_t DWC_LE32_TO_CPU(uint32_t *p);
+#define dwc_le32_to_cpu DWC_LE32_TO_CPU
+
+/** Converts 32 bit big endian data to CPU byte ordering. */
+extern uint32_t DWC_BE32_TO_CPU(uint32_t *p);
+#define dwc_be32_to_cpu DWC_BE32_TO_CPU
+
+/** Converts 16 bit data in CPU byte ordering to little endian. */
+extern uint16_t DWC_CPU_TO_LE16(uint16_t *p);
+#define dwc_cpu_to_le16 DWC_CPU_TO_LE16
+
+/** Converts 16 bit data in CPU byte orderint to big endian. */
+extern uint16_t DWC_CPU_TO_BE16(uint16_t *p);
+#define dwc_cpu_to_be16 DWC_CPU_TO_BE16
+
+/** Converts 16 bit little endian data to CPU byte ordering. */
+extern uint16_t DWC_LE16_TO_CPU(uint16_t *p);
+#define dwc_le16_to_cpu DWC_LE16_TO_CPU
+
+/** Converts 16 bit bi endian data to CPU byte ordering. */
+extern uint16_t DWC_BE16_TO_CPU(uint16_t *p);
+#define dwc_be16_to_cpu DWC_BE16_TO_CPU
+
+
+/** @name Register Read/Write
+ *
+ * The following six functions should be implemented to read/write registers of
+ * 32-bit and 64-bit sizes.  All modules use this to read/write register values.
+ * The reg value is a pointer to the register calculated from the void *base
+ * variable passed into the driver when it is started.  */
+
+#ifdef DWC_LINUX
+/* Linux doesn't need any extra parameters for register read/write, so we
+ * just throw away the IO context parameter.
+ */
+/** Reads the content of a 32-bit register. */
+extern uint32_t DWC_READ_REG32(uint32_t volatile *reg);
+#define dwc_read_reg32(_ctx_,_reg_) DWC_READ_REG32(_reg_)
+
+/** Reads the content of a 64-bit register. */
+extern uint64_t DWC_READ_REG64(uint64_t volatile *reg);
+#define dwc_read_reg64(_ctx_,_reg_) DWC_READ_REG64(_reg_)
+
+/** Writes to a 32-bit register. */
+extern void DWC_WRITE_REG32(uint32_t volatile *reg, uint32_t value);
+#define dwc_write_reg32(_ctx_,_reg_,_val_) DWC_WRITE_REG32(_reg_, _val_)
+
+/** Writes to a 64-bit register. */
+extern void DWC_WRITE_REG64(uint64_t volatile *reg, uint64_t value);
+#define dwc_write_reg64(_ctx_,_reg_,_val_) DWC_WRITE_REG64(_reg_, _val_)
+
+/**
+ * Modify bit values in a register.  Using the
+ * algorithm: (reg_contents & ~clear_mask) | set_mask.
+ */
+extern void DWC_MODIFY_REG32(uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask);
+#define dwc_modify_reg32(_ctx_,_reg_,_cmsk_,_smsk_) DWC_MODIFY_REG32(_reg_,_cmsk_,_smsk_)
+extern void DWC_MODIFY_REG64(uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask);
+#define dwc_modify_reg64(_ctx_,_reg_,_cmsk_,_smsk_) DWC_MODIFY_REG64(_reg_,_cmsk_,_smsk_)
+
+#endif /* DWC_LINUX */
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+typedef struct dwc_ioctx {
+       struct device *dev;
+       bus_space_tag_t iot;
+       bus_space_handle_t ioh;
+} dwc_ioctx_t;
+
+/** BSD needs two extra parameters for register read/write, so we pass
+ * them in using the IO context parameter.
+ */
+/** Reads the content of a 32-bit register. */
+extern uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg);
+#define dwc_read_reg32 DWC_READ_REG32
+
+/** Reads the content of a 64-bit register. */
+extern uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg);
+#define dwc_read_reg64 DWC_READ_REG64
+
+/** Writes to a 32-bit register. */
+extern void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value);
+#define dwc_write_reg32 DWC_WRITE_REG32
+
+/** Writes to a 64-bit register. */
+extern void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value);
+#define dwc_write_reg64 DWC_WRITE_REG64
+
+/**
+ * Modify bit values in a register.  Using the
+ * algorithm: (reg_contents & ~clear_mask) | set_mask.
+ */
+extern void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask);
+#define dwc_modify_reg32 DWC_MODIFY_REG32
+extern void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask);
+#define dwc_modify_reg64 DWC_MODIFY_REG64
+
+#endif /* DWC_FREEBSD || DWC_NETBSD */
+
+/** @cond */
+
+/** @name Some convenience MACROS used internally.  Define DWC_DEBUG_REGS to log the
+ * register writes. */
+
+#ifdef DWC_LINUX
+
+# ifdef DWC_DEBUG_REGS
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(_container_type *container, int num) { \
+       return DWC_READ_REG32(&container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(_container_type *container, int num, uint32_t data) { \
+       DWC_DEBUG("WRITING %8s[%d]: %p: %08x", #_reg, num, \
+                 &(((uint32_t*)container->regs->_reg)[num]), data); \
+       DWC_WRITE_REG32(&(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(_container_type *container) { \
+       return DWC_READ_REG32(&container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(_container_type *container, uint32_t data) { \
+       DWC_DEBUG("WRITING %11s: %p: %08x", #_reg, &container->regs->_reg, data); \
+       DWC_WRITE_REG32(&container->regs->_reg, data); \
+}
+
+# else /* DWC_DEBUG_REGS */
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(_container_type *container, int num) { \
+       return DWC_READ_REG32(&container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(_container_type *container, int num, uint32_t data) { \
+       DWC_WRITE_REG32(&(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(_container_type *container) { \
+       return DWC_READ_REG32(&container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(_container_type *container, uint32_t data) { \
+       DWC_WRITE_REG32(&container->regs->_reg, data); \
+}
+
+# endif        /* DWC_DEBUG_REGS */
+
+#endif /* DWC_LINUX */
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+
+# ifdef DWC_DEBUG_REGS
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(void *io_ctx, _container_type *container, int num) { \
+       return DWC_READ_REG32(io_ctx, &container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(void *io_ctx, _container_type *container, int num, uint32_t data) { \
+       DWC_DEBUG("WRITING %8s[%d]: %p: %08x", #_reg, num, \
+                 &(((uint32_t*)container->regs->_reg)[num]), data); \
+       DWC_WRITE_REG32(io_ctx, &(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(void *io_ctx, _container_type *container) { \
+       return DWC_READ_REG32(io_ctx, &container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(void *io_ctx, _container_type *container, uint32_t data) { \
+       DWC_DEBUG("WRITING %11s: %p: %08x", #_reg, &container->regs->_reg, data); \
+       DWC_WRITE_REG32(io_ctx, &container->regs->_reg, data); \
+}
+
+# else /* DWC_DEBUG_REGS */
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(void *io_ctx, _container_type *container, int num) { \
+       return DWC_READ_REG32(io_ctx, &container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(void *io_ctx, _container_type *container, int num, uint32_t data) { \
+       DWC_WRITE_REG32(io_ctx, &(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(void *io_ctx, _container_type *container) { \
+       return DWC_READ_REG32(io_ctx, &container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(void *io_ctx, _container_type *container, uint32_t data) { \
+       DWC_WRITE_REG32(io_ctx, &container->regs->_reg, data); \
+}
+
+# endif        /* DWC_DEBUG_REGS */
+
+#endif /* DWC_FREEBSD || DWC_NETBSD */
+
+/** @endcond */
+
+
+#ifdef DWC_CRYPTOLIB
+/** @name Crypto Functions
+ *
+ * These are the low-level cryptographic functions used by the driver. */
+
+/** Perform AES CBC */
+extern int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out);
+#define dwc_aes_cbc DWC_AES_CBC
+
+/** Fill the provided buffer with random bytes.  These should be cryptographic grade random numbers. */
+extern void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length);
+#define dwc_random_bytes DWC_RANDOM_BYTES
+
+/** Perform the SHA-256 hash function */
+extern int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out);
+#define dwc_sha256 DWC_SHA256
+
+/** Calculated the HMAC-SHA256 */
+extern int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t *out);
+#define dwc_hmac_sha256 DWC_HMAC_SHA256
+
+#endif /* DWC_CRYPTOLIB */
+
+
+/** @name Memory Allocation
+ *
+ * These function provide access to memory allocation.  There are only 2 DMA
+ * functions and 3 Regular memory functions that need to be implemented.  None
+ * of the memory debugging routines need to be implemented.  The allocation
+ * routines all ZERO the contents of the memory.
+ *
+ * Defining DWC_DEBUG_MEMORY turns on memory debugging and statistic gathering.
+ * This checks for memory leaks, keeping track of alloc/free pairs.  It also
+ * keeps track of how much memory the driver is using at any given time. */
+
+#define DWC_PAGE_SIZE 4096
+#define DWC_PAGE_OFFSET(addr) (((uint32_t)addr) & 0xfff)
+#define DWC_PAGE_ALIGNED(addr) ((((uint32_t)addr) & 0xfff) == 0)
+
+#define DWC_INVALID_DMA_ADDR 0x0
+
+#ifdef DWC_LINUX
+/** Type for a DMA address */
+typedef dma_addr_t dwc_dma_t;
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+typedef bus_addr_t dwc_dma_t;
+#endif
+
+#ifdef DWC_FREEBSD
+typedef struct dwc_dmactx {
+       struct device *dev;
+       bus_dma_tag_t dma_tag;
+       bus_dmamap_t dma_map;
+       bus_addr_t dma_paddr;
+       void *dma_vaddr;
+} dwc_dmactx_t;
+#endif
+
+#ifdef DWC_NETBSD
+typedef struct dwc_dmactx {
+       struct device *dev;
+       bus_dma_tag_t dma_tag;
+       bus_dmamap_t dma_map;
+       bus_dma_segment_t segs[1];
+       int nsegs;
+       bus_addr_t dma_paddr;
+       void *dma_vaddr;
+} dwc_dmactx_t;
+#endif
+
+/* @todo these functions will be added in the future */
+#if 0
+/**
+ * Creates a DMA pool from which you can allocate DMA buffers.  Buffers
+ * allocated from this pool will be guaranteed to meet the size, alignment, and
+ * boundary requirements specified.
+ *
+ * @param[in] size Specifies the size of the buffers that will be allocated from
+ * this pool.
+ * @param[in] align Specifies the byte alignment requirements of the buffers
+ * allocated from this pool.  Must be a power of 2.
+ * @param[in] boundary Specifies the N-byte boundary that buffers allocated from
+ * this pool must not cross.
+ *
+ * @returns A pointer to an internal opaque structure which is not to be
+ * accessed outside of these library functions.  Use this handle to specify
+ * which pools to allocate/free DMA buffers from and also to destroy the pool,
+ * when you are done with it.
+ */
+extern dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size, uint32_t align, uint32_t boundary);
+
+/**
+ * Destroy a DMA pool.  All buffers allocated from that pool must be freed first.
+ */
+extern void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool);
+
+/**
+ * Allocate a buffer from the specified DMA pool and zeros its contents.
+ */
+extern void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr);
+
+/**
+ * Free a previously allocated buffer from the DMA pool.
+ */
+extern void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr);
+#endif
+
+/** Allocates a DMA capable buffer and zeroes its contents. */
+extern void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr);
+
+/** Allocates a DMA capable buffer and zeroes its contents in atomic contest */
+extern void *__DWC_DMA_ALLOC_ATOMIC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr);
+
+/** Frees a previously allocated buffer. */
+extern void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr);
+
+/** Allocates a block of memory and zeroes its contents. */
+extern void *__DWC_ALLOC(void *mem_ctx, uint32_t size);
+
+/** Allocates a block of memory and zeroes its contents, in an atomic manner
+ * which can be used inside interrupt context.  The size should be sufficiently
+ * small, a few KB at most, such that failures are not likely to occur.  Can just call
+ * __DWC_ALLOC if it is atomic. */
+extern void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size);
+
+/** Frees a previously allocated buffer. */
+extern void __DWC_FREE(void *mem_ctx, void *addr);
+
+#ifndef DWC_DEBUG_MEMORY
+
+#define DWC_ALLOC(_size_) __DWC_ALLOC(NULL, _size_)
+#define DWC_ALLOC_ATOMIC(_size_) __DWC_ALLOC_ATOMIC(NULL, _size_)
+#define DWC_FREE(_addr_) __DWC_FREE(NULL, _addr_)
+
+# ifdef DWC_LINUX
+#define DWC_DMA_ALLOC(_size_,_dma_) __DWC_DMA_ALLOC(NULL, _size_, _dma_)
+#define DWC_DMA_ALLOC_ATOMIC(_size_,_dma_) __DWC_DMA_ALLOC_ATOMIC(NULL, _size_,_dma_)
+#define DWC_DMA_FREE(_size_,_virt_,_dma_) __DWC_DMA_FREE(NULL, _size_, _virt_, _dma_)
+# endif
+
+# if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+#define DWC_DMA_ALLOC __DWC_DMA_ALLOC
+#define DWC_DMA_FREE __DWC_DMA_FREE
+# endif
+extern void *dwc_dma_alloc_atomic_debug(uint32_t size, dwc_dma_t *dma_addr, char const *func, int line);
+
+#else  /* DWC_DEBUG_MEMORY */
+
+extern void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line);
+extern void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func, int line);
+extern void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line);
+extern void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
+                                char const *func, int line);
+extern void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr, 
+                               char const *func, int line);
+extern void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
+                              dwc_dma_t dma_addr, char const *func, int line);
+
+extern int dwc_memory_debug_start(void *mem_ctx);
+extern void dwc_memory_debug_stop(void);
+extern void dwc_memory_debug_report(void);
+
+#define DWC_ALLOC(_size_) dwc_alloc_debug(NULL, _size_, __func__, __LINE__)
+#define DWC_ALLOC_ATOMIC(_size_) dwc_alloc_atomic_debug(NULL, _size_, \
+                                                       __func__, __LINE__)
+#define DWC_FREE(_addr_) dwc_free_debug(NULL, _addr_, __func__, __LINE__)
+
+# ifdef DWC_LINUX
+#define DWC_DMA_ALLOC(_size_,_dma_) dwc_dma_alloc_debug(NULL, _size_, \
+                                               _dma_, __func__, __LINE__)
+#define DWC_DMA_ALLOC_ATOMIC(_size_,_dma_) dwc_dma_alloc_atomic_debug(NULL, _size_, \
+                                               _dma_, __func__, __LINE__)
+#define DWC_DMA_FREE(_size_,_virt_,_dma_) dwc_dma_free_debug(NULL, _size_, \
+                                               _virt_, _dma_, __func__, __LINE__)
+# endif
+
+# if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+#define DWC_DMA_ALLOC(_ctx_,_size_,_dma_) dwc_dma_alloc_debug(_ctx_, _size_, \
+                                               _dma_, __func__, __LINE__)
+#define DWC_DMA_FREE(_ctx_,_size_,_virt_,_dma_) dwc_dma_free_debug(_ctx_, _size_, \
+                                                _virt_, _dma_, __func__, __LINE__)
+# endif
+
+#endif /* DWC_DEBUG_MEMORY */
+
+#define dwc_alloc(_ctx_,_size_) DWC_ALLOC(_size_)
+#define dwc_alloc_atomic(_ctx_,_size_) DWC_ALLOC_ATOMIC(_size_)
+#define dwc_free(_ctx_,_addr_) DWC_FREE(_addr_)
+
+#ifdef DWC_LINUX
+/* Linux doesn't need any extra parameters for DMA buffer allocation, so we
+ * just throw away the DMA context parameter.
+ */
+#define dwc_dma_alloc(_ctx_,_size_,_dma_) DWC_DMA_ALLOC(_size_, _dma_)
+#define dwc_dma_alloc_atomic(_ctx_,_size_,_dma_) DWC_DMA_ALLOC_ATOMIC(_size_, _dma_)
+#define dwc_dma_free(_ctx_,_size_,_virt_,_dma_) DWC_DMA_FREE(_size_, _virt_, _dma_)
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+/** BSD needs several extra parameters for DMA buffer allocation, so we pass
+ * them in using the DMA context parameter.
+ */
+#define dwc_dma_alloc DWC_DMA_ALLOC
+#define dwc_dma_free DWC_DMA_FREE
+#endif
+
+
+/** @name Memory and String Processing */
+
+/** memset() clone */
+extern void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size);
+#define dwc_memset DWC_MEMSET
+
+/** memcpy() clone */
+extern void *DWC_MEMCPY(void *dest, void const *src, uint32_t size);
+#define dwc_memcpy DWC_MEMCPY
+
+/** memmove() clone */
+extern void *DWC_MEMMOVE(void *dest, void *src, uint32_t size);
+#define dwc_memmove DWC_MEMMOVE
+
+/** memcmp() clone */
+extern int DWC_MEMCMP(void *m1, void *m2, uint32_t size);
+#define dwc_memcmp DWC_MEMCMP
+
+/** strcmp() clone */
+extern int DWC_STRCMP(void *s1, void *s2);
+#define dwc_strcmp DWC_STRCMP
+
+/** strncmp() clone */
+extern int DWC_STRNCMP(void *s1, void *s2, uint32_t size);
+#define dwc_strncmp DWC_STRNCMP
+
+/** strlen() clone, for NULL terminated ASCII strings */
+extern int DWC_STRLEN(char const *str);
+#define dwc_strlen DWC_STRLEN
+
+/** strcpy() clone, for NULL terminated ASCII strings */
+extern char *DWC_STRCPY(char *to, const char *from);
+#define dwc_strcpy DWC_STRCPY
+
+/** strdup() clone.  If you wish to use memory allocation debugging, this
+ * implementation of strdup should use the DWC_* memory routines instead of
+ * calling a predefined strdup.  Otherwise the memory allocated by this routine
+ * will not be seen by the debugging routines. */
+extern char *DWC_STRDUP(char const *str);
+#define dwc_strdup(_ctx_,_str_) DWC_STRDUP(_str_)
+
+/** NOT an atoi() clone.  Read the description carefully.  Returns an integer
+ * converted from the string str in base 10 unless the string begins with a "0x"
+ * in which case it is base 16.  String must be a NULL terminated sequence of
+ * ASCII characters and may optionally begin with whitespace, a + or -, and a
+ * "0x" prefix if base 16.  The remaining characters must be valid digits for
+ * the number and end with a NULL character.  If any invalid characters are
+ * encountered or it returns with a negative error code and the results of the
+ * conversion are undefined.  On sucess it returns 0.  Overflow conditions are
+ * undefined.  An example implementation using atoi() can be referenced from the
+ * Linux implementation. */
+extern int DWC_ATOI(const char *str, int32_t *value);
+#define dwc_atoi DWC_ATOI
+
+/** Same as above but for unsigned. */
+extern int DWC_ATOUI(const char *str, uint32_t *value);
+#define dwc_atoui DWC_ATOUI
+
+#ifdef DWC_UTFLIB
+/** This routine returns a UTF16LE unicode encoded string from a UTF8 string. */
+extern int DWC_UTF8_TO_UTF16LE(uint8_t const *utf8string, uint16_t *utf16string, unsigned len);
+#define dwc_utf8_to_utf16le DWC_UTF8_TO_UTF16LE
+#endif
+
+
+/** @name Wait queues
+ *
+ * Wait queues provide a means of synchronizing between threads or processes.  A
+ * process can block on a waitq if some condition is not true, waiting for it to
+ * become true.  When the waitq is triggered all waiting process will get
+ * unblocked and the condition will be check again.  Waitqs should be triggered
+ * every time a condition can potentially change.*/
+struct dwc_waitq;
+
+/** Type for a waitq */
+typedef struct dwc_waitq dwc_waitq_t;
+
+/** The type of waitq condition callback function.  This is called every time
+ * condition is evaluated. */
+typedef int (*dwc_waitq_condition_t)(void *data);
+
+/** Allocate a waitq */
+extern dwc_waitq_t *DWC_WAITQ_ALLOC(void);
+#define dwc_waitq_alloc(_ctx_) DWC_WAITQ_ALLOC()
+
+/** Free a waitq */
+extern void DWC_WAITQ_FREE(dwc_waitq_t *wq);
+#define dwc_waitq_free DWC_WAITQ_FREE
+
+/** Check the condition and if it is false, block on the waitq.  When unblocked, check the
+ * condition again.  The function returns when the condition becomes true.  The return value
+ * is 0 on condition true, DWC_WAITQ_ABORTED on abort or killed, or DWC_WAITQ_UNKNOWN on error. */
+extern int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data);
+#define dwc_waitq_wait DWC_WAITQ_WAIT
+
+/** Check the condition and if it is false, block on the waitq.  When unblocked,
+ * check the condition again.  The function returns when the condition become
+ * true or the timeout has passed.  The return value is 0 on condition true or
+ * DWC_TIMED_OUT on timeout, or DWC_WAITQ_ABORTED, or DWC_WAITQ_UNKNOWN on
+ * error. */
+extern int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+                                     void *data, int32_t msecs);
+#define dwc_waitq_wait_timeout DWC_WAITQ_WAIT_TIMEOUT
+
+/** Trigger a waitq, unblocking all processes.  This should be called whenever a condition
+ * has potentially changed. */
+extern void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq);
+#define dwc_waitq_trigger DWC_WAITQ_TRIGGER
+
+/** Unblock all processes waiting on the waitq with an ABORTED result. */
+extern void DWC_WAITQ_ABORT(dwc_waitq_t *wq);
+#define dwc_waitq_abort DWC_WAITQ_ABORT
+
+
+/** @name Threads
+ *
+ * A thread must be explicitly stopped.  It must check DWC_THREAD_SHOULD_STOP
+ * whenever it is woken up, and then return.  The DWC_THREAD_STOP function
+ * returns the value from the thread.
+ */
+
+struct dwc_thread;
+
+/** Type for a thread */
+typedef struct dwc_thread dwc_thread_t;
+
+/** The thread function */
+typedef int (*dwc_thread_function_t)(void *data);
+
+/** Create a thread and start it running the thread_function.  Returns a handle
+ * to the thread */
+extern dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data);
+#define dwc_thread_run(_ctx_,_func_,_name_,_data_) DWC_THREAD_RUN(_func_, _name_, _data_)
+
+/** Stops a thread.  Return the value returned by the thread.  Or will return
+ * DWC_ABORT if the thread never started. */
+extern int DWC_THREAD_STOP(dwc_thread_t *thread);
+#define dwc_thread_stop DWC_THREAD_STOP
+
+/** Signifies to the thread that it must stop. */
+#ifdef DWC_LINUX
+/* Linux doesn't need any parameters for kthread_should_stop() */
+extern dwc_bool_t DWC_THREAD_SHOULD_STOP(void);
+#define dwc_thread_should_stop(_thrd_) DWC_THREAD_SHOULD_STOP()
+
+/* No thread_exit function in Linux */
+#define dwc_thread_exit(_thrd_)
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+/** BSD needs the thread pointer for kthread_suspend_check() */
+extern dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread);
+#define dwc_thread_should_stop DWC_THREAD_SHOULD_STOP
+
+/** The thread must call this to exit. */
+extern void DWC_THREAD_EXIT(dwc_thread_t *thread);
+#define dwc_thread_exit DWC_THREAD_EXIT
+#endif
+
+
+/** @name Work queues
+ *
+ * Workqs are used to queue a callback function to be called at some later time,
+ * in another thread. */
+struct dwc_workq;
+
+/** Type for a workq */
+typedef struct dwc_workq dwc_workq_t;
+
+/** The type of the callback function to be called. */
+typedef void (*dwc_work_callback_t)(void *data);
+
+/** Allocate a workq */
+extern dwc_workq_t *DWC_WORKQ_ALLOC(char *name);
+#define dwc_workq_alloc(_ctx_,_name_) DWC_WORKQ_ALLOC(_name_)
+
+/** Free a workq.  All work must be completed before being freed. */
+extern void DWC_WORKQ_FREE(dwc_workq_t *workq);
+#define dwc_workq_free DWC_WORKQ_FREE
+
+/** Schedule a callback on the workq, passing in data.  The function will be
+ * scheduled at some later time. */
+extern void DWC_WORKQ_SCHEDULE(dwc_workq_t *workq, dwc_work_callback_t cb,
+                              void *data, char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 4, 5)));
+#else
+       ;
+#endif
+#define dwc_workq_schedule DWC_WORKQ_SCHEDULE
+
+/** Schedule a callback on the workq, that will be called until at least
+ * given number miliseconds have passed. */
+extern void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *workq, dwc_work_callback_t cb,
+                                      void *data, uint32_t time, char *format, ...)
+#ifdef __GNUC__
+       __attribute__ ((format(printf, 5, 6)));
+#else
+       ;
+#endif
+#define dwc_workq_schedule_delayed DWC_WORKQ_SCHEDULE_DELAYED
+
+/** The number of processes in the workq */
+extern int DWC_WORKQ_PENDING(dwc_workq_t *workq);
+#define dwc_workq_pending DWC_WORKQ_PENDING
+
+/** Blocks until all the work in the workq is complete or timed out.  Returns <
+ * 0 on timeout. */
+extern int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout);
+#define dwc_workq_wait_work_done DWC_WORKQ_WAIT_WORK_DONE
+
+
+/** @name Tasklets
+ *
+ */
+struct dwc_tasklet;
+
+/** Type for a tasklet */
+typedef struct dwc_tasklet dwc_tasklet_t;
+
+/** The type of the callback function to be called */
+typedef void (*dwc_tasklet_callback_t)(void *data);
+
+/** Allocates a tasklet */
+extern dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data);
+#define dwc_task_alloc(_ctx_,_name_,_cb_,_data_) DWC_TASK_ALLOC(_name_, _cb_, _data_)
+
+/** Frees a tasklet */
+extern void DWC_TASK_FREE(dwc_tasklet_t *task);
+#define dwc_task_free DWC_TASK_FREE
+
+/** Schedules a tasklet to run */
+extern void DWC_TASK_SCHEDULE(dwc_tasklet_t *task);
+#define dwc_task_schedule DWC_TASK_SCHEDULE
+
+
+/** @name Timer
+ *
+ * Callbacks must be small and atomic.
+ */
+struct dwc_timer;
+
+/** Type for a timer */
+typedef struct dwc_timer dwc_timer_t;
+
+/** The type of the callback function to be called */
+typedef void (*dwc_timer_callback_t)(void *data);
+
+/** Allocates a timer */
+extern dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data);
+#define dwc_timer_alloc(_ctx_,_name_,_cb_,_data_) DWC_TIMER_ALLOC(_name_,_cb_,_data_)
+
+/** Frees a timer */
+extern void DWC_TIMER_FREE(dwc_timer_t *timer);
+#define dwc_timer_free DWC_TIMER_FREE
+
+/** Schedules the timer to run at time ms from now.  And will repeat at every
+ * repeat_interval msec therafter
+ *
+ * Modifies a timer that is still awaiting execution to a new expiration time.
+ * The mod_time is added to the old time.  */
+extern void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time);
+#define dwc_timer_schedule DWC_TIMER_SCHEDULE
+
+/** Disables the timer from execution. */
+extern void DWC_TIMER_CANCEL(dwc_timer_t *timer);
+#define dwc_timer_cancel DWC_TIMER_CANCEL
+
+
+/** @name Spinlocks
+ *
+ * These locks are used when the work between the lock/unlock is atomic and
+ * short.  Interrupts are also disabled during the lock/unlock and thus they are
+ * suitable to lock between interrupt/non-interrupt context.  They also lock
+ * between processes if you have multiple CPUs or Preemption.  If you don't have
+ * multiple CPUS or Preemption, then the you can simply implement the
+ * DWC_SPINLOCK and DWC_SPINUNLOCK to disable and enable interrupts.  Because
+ * the work between the lock/unlock is atomic, the process context will never
+ * change, and so you never have to lock between processes.  */
+
+struct dwc_spinlock;
+
+/** Type for a spinlock */
+typedef struct dwc_spinlock dwc_spinlock_t;
+
+/** Type for the 'flags' argument to spinlock funtions */
+typedef unsigned long dwc_irqflags_t;
+
+/** Returns an initialized lock variable.  This function should allocate and
+ * initialize the OS-specific data structure used for locking.  This data
+ * structure is to be used for the DWC_LOCK and DWC_UNLOCK functions and should
+ * be freed by the DWC_FREE_LOCK when it is no longer used. */
+extern dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void);
+#define dwc_spinlock_alloc(_ctx_) DWC_SPINLOCK_ALLOC()
+
+/** Frees an initialized lock variable. */
+extern void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock);
+#define dwc_spinlock_free(_ctx_,_lock_) DWC_SPINLOCK_FREE(_lock_)
+
+/** Disables interrupts and blocks until it acquires the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ * @param flags Unsigned long for irq flags storage.
+ */
+extern void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags);
+#define dwc_spinlock_irqsave DWC_SPINLOCK_IRQSAVE
+
+/** Re-enables the interrupt and releases the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ * @param flags Unsigned long for irq flags storage.  Must be the same as was
+ * passed into DWC_LOCK.
+ */
+extern void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags);
+#define dwc_spinunlock_irqrestore DWC_SPINUNLOCK_IRQRESTORE
+
+/** Blocks until it acquires the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ */
+extern void DWC_SPINLOCK(dwc_spinlock_t *lock);
+#define dwc_spinlock DWC_SPINLOCK
+
+/** Releases the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ */
+extern void DWC_SPINUNLOCK(dwc_spinlock_t *lock);
+#define dwc_spinunlock DWC_SPINUNLOCK
+
+
+/** @name Mutexes
+ *
+ * Unlike spinlocks Mutexes lock only between processes and the work between the
+ * lock/unlock CAN block, therefore it CANNOT be called from interrupt context.
+ */
+
+struct dwc_mutex;
+
+/** Type for a mutex */
+typedef struct dwc_mutex dwc_mutex_t;
+
+/* For Linux Mutex Debugging make it inline because the debugging routines use
+ * the symbol to determine recursive locking.  This makes it falsely think
+ * recursive locking occurs. */
+#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES)
+#define DWC_MUTEX_ALLOC_LINUX_DEBUG(__mutexp) ({ \
+       __mutexp = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mutex)); \
+       mutex_init((struct mutex *)__mutexp); \
+})
+#endif
+
+/** Allocate a mutex */
+extern dwc_mutex_t *DWC_MUTEX_ALLOC(void);
+#define dwc_mutex_alloc(_ctx_) DWC_MUTEX_ALLOC()
+
+/* For memory leak debugging when using Linux Mutex Debugging */
+#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES)
+#define DWC_MUTEX_FREE(__mutexp) do { \
+       mutex_destroy((struct mutex *)__mutexp); \
+       DWC_FREE(__mutexp); \
+} while(0)
+#else
+/** Free a mutex */
+extern void DWC_MUTEX_FREE(dwc_mutex_t *mutex);
+#define dwc_mutex_free(_ctx_,_mutex_) DWC_MUTEX_FREE(_mutex_)
+#endif
+
+/** Lock a mutex */
+extern void DWC_MUTEX_LOCK(dwc_mutex_t *mutex);
+#define dwc_mutex_lock DWC_MUTEX_LOCK
+
+/** Non-blocking lock returns 1 on successful lock. */
+extern int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex);
+#define dwc_mutex_trylock DWC_MUTEX_TRYLOCK
+
+/** Unlock a mutex */
+extern void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex);
+#define dwc_mutex_unlock DWC_MUTEX_UNLOCK
+
+
+/** @name Time */
+
+/** Microsecond delay.
+ *
+ * @param usecs  Microseconds to delay.
+ */
+extern void DWC_UDELAY(uint32_t usecs);
+#define dwc_udelay DWC_UDELAY
+
+/** Millisecond delay.
+ *
+ * @param msecs  Milliseconds to delay.
+ */
+extern void DWC_MDELAY(uint32_t msecs);
+#define dwc_mdelay DWC_MDELAY
+
+/** Non-busy waiting.
+ * Sleeps for specified number of milliseconds.
+ *
+ * @param msecs Milliseconds to sleep.
+ */
+extern void DWC_MSLEEP(uint32_t msecs);
+#define dwc_msleep DWC_MSLEEP
+
+/**
+ * Returns number of milliseconds since boot.
+ */
+extern uint32_t DWC_TIME(void);
+#define dwc_time DWC_TIME
+
+
+
+
+/* @mainpage DWC Portability and Common Library
+ *
+ * This is the documentation for the DWC Portability and Common Library.
+ *
+ * @section intro Introduction
+ *
+ * The DWC Portability library consists of wrapper calls and data structures to
+ * all low-level functions which are typically provided by the OS.  The WUDEV
+ * driver uses only these functions.  In order to port the WUDEV driver, only
+ * the functions in this library need to be re-implemented, with the same
+ * behavior as documented here.
+ *
+ * The Common library consists of higher level functions, which rely only on
+ * calling the functions from the DWC Portability library.  These common
+ * routines are shared across modules.  Some of the common libraries need to be
+ * used directly by the driver programmer when porting WUDEV.  Such as the
+ * parameter and notification libraries.
+ *
+ * @section low Portability Library OS Wrapper Functions
+ *
+ * Any function starting with DWC and in all CAPS is a low-level OS-wrapper that
+ * needs to be implemented when porting, for example DWC_MUTEX_ALLOC().  All of
+ * these functions are included in the dwc_os.h file.
+ *
+ * There are many functions here covering a wide array of OS services.  Please
+ * see dwc_os.h for details, and implementation notes for each function.
+ *
+ * @section common Common Library Functions
+ *
+ * Any function starting with dwc and in all lowercase is a common library
+ * routine.  These functions have a portable implementation and do not need to
+ * be reimplemented when porting.  The common routines can be used by any
+ * driver, and some must be used by the end user to control the drivers.  For
+ * example, you must use the Parameter common library in order to set the
+ * parameters in the WUDEV module.
+ *
+ * The common libraries consist of the following:
+ *
+ * - Connection Contexts - Used internally and can be used by end-user.  See dwc_cc.h
+ * - Parameters - Used internally and can be used by end-user.  See dwc_params.h
+ * - Notifications - Used internally and can be used by end-user.  See dwc_notifier.h
+ * - Lists - Used internally and can be used by end-user.  See dwc_list.h
+ * - Memory Debugging - Used internally and can be used by end-user.  See dwc_os.h
+ * - Modpow - Used internally only.  See dwc_modpow.h
+ * - DH - Used internally only.  See dwc_dh.h
+ * - Crypto - Used internally only.  See dwc_crypto.h
+ *
+ *
+ * @section prereq Prerequistes For dwc_os.h
+ * @subsection types Data Types
+ *
+ * The dwc_os.h file assumes that several low-level data types are pre defined for the
+ * compilation environment.  These data types are:
+ *
+ * - uint8_t - unsigned 8-bit data type
+ * - int8_t - signed 8-bit data type
+ * - uint16_t - unsigned 16-bit data type
+ * - int16_t - signed 16-bit data type
+ * - uint32_t - unsigned 32-bit data type
+ * - int32_t - signed 32-bit data type
+ * - uint64_t - unsigned 64-bit data type
+ * - int64_t - signed 64-bit data type
+ *
+ * Ensure that these are defined before using dwc_os.h.  The easiest way to do
+ * that is to modify the top of the file to include the appropriate header.
+ * This is already done for the Linux environment.  If the DWC_LINUX macro is
+ * defined, the correct header will be added.  A standard header <stdint.h> is
+ * also used for environments where standard C headers are available.
+ *
+ * @subsection stdarg Variable Arguments
+ *
+ * Variable arguments are provided by a standard C header <stdarg.h>.  it is
+ * available in Both the Linux and ANSI C enviornment.  An equivalent must be
+ * provided in your enviornment in order to use dwc_os.h with the debug and
+ * tracing message functionality.
+ *
+ * @subsection thread Threading
+ *
+ * WUDEV Core must be run on an operating system that provides for multiple
+ * threads/processes.  Threading can be implemented in many ways, even in
+ * embedded systems without an operating system.  At the bare minimum, the
+ * system should be able to start any number of processes at any time to handle
+ * special work.  It need not be a pre-emptive system.  Process context can
+ * change upon a call to a blocking function.  The hardware interrupt context
+ * that calls the module's ISR() function must be differentiable from process
+ * context, even if your processes are impemented via a hardware interrupt.
+ * Further locking mechanism between process must exist (or be implemented), and
+ * process context must have a way to disable interrupts for a period of time to
+ * lock them out.  If all of this exists, the functions in dwc_os.h related to
+ * threading should be able to be implemented with the defined behavior.
+ *
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_OS_H_ */
diff --git a/drivers/usb/host/dwc_common_port/usb.h b/drivers/usb/host/dwc_common_port/usb.h
new file mode 100644
index 0000000..27bda82
--- /dev/null
+++ b/drivers/usb/host/dwc_common_port/usb.h
@@ -0,0 +1,946 @@
+/*
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Lennart Augustsson (lennart@augustsson.net) at
+ * Carlstedt Research & Technology.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Modified by Synopsys, Inc, 12/12/2007 */
+
+
+#ifndef _USB_H_
+#define _USB_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The USB records contain some unaligned little-endian word
+ * components.  The U[SG]ETW macros take care of both the alignment
+ * and endian problem and should always be used to access non-byte
+ * values.
+ */
+typedef u_int8_t uByte;
+typedef u_int8_t uWord[2];
+typedef u_int8_t uDWord[4];
+
+#define USETW2(w,h,l) ((w)[0] = (u_int8_t)(l), (w)[1] = (u_int8_t)(h))
+#define UCONSTW(x)     { (x) & 0xff, ((x) >> 8) & 0xff }
+#define UCONSTDW(x)    { (x) & 0xff, ((x) >> 8) & 0xff, \
+                         ((x) >> 16) & 0xff, ((x) >> 24) & 0xff }
+
+#if 1
+#define UGETW(w) ((w)[0] | ((w)[1] << 8))
+#define USETW(w,v) ((w)[0] = (u_int8_t)(v), (w)[1] = (u_int8_t)((v) >> 8))
+#define UGETDW(w) ((w)[0] | ((w)[1] << 8) | ((w)[2] << 16) | ((w)[3] << 24))
+#define USETDW(w,v) ((w)[0] = (u_int8_t)(v), \
+                    (w)[1] = (u_int8_t)((v) >> 8), \
+                    (w)[2] = (u_int8_t)((v) >> 16), \
+                    (w)[3] = (u_int8_t)((v) >> 24))
+#else
+/*
+ * On little-endian machines that can handle unanliged accesses
+ * (e.g. i386) these macros can be replaced by the following.
+ */
+#define UGETW(w) (*(u_int16_t *)(w))
+#define USETW(w,v) (*(u_int16_t *)(w) = (v))
+#define UGETDW(w) (*(u_int32_t *)(w))
+#define USETDW(w,v) (*(u_int32_t *)(w) = (v))
+#endif
+
+/*
+ * Macros for accessing UAS IU fields, which are big-endian
+ */
+#define IUSETW2(w,h,l) ((w)[0] = (u_int8_t)(h), (w)[1] = (u_int8_t)(l))
+#define IUCONSTW(x)    { ((x) >> 8) & 0xff, (x) & 0xff }
+#define IUCONSTDW(x)   { ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
+                       ((x) >> 8) & 0xff, (x) & 0xff }
+#define IUGETW(w) (((w)[0] << 8) | (w)[1])
+#define IUSETW(w,v) ((w)[0] = (u_int8_t)((v) >> 8), (w)[1] = (u_int8_t)(v))
+#define IUGETDW(w) (((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])
+#define IUSETDW(w,v) ((w)[0] = (u_int8_t)((v) >> 24), \
+                     (w)[1] = (u_int8_t)((v) >> 16), \
+                     (w)[2] = (u_int8_t)((v) >> 8), \
+                     (w)[3] = (u_int8_t)(v))
+
+#define UPACKED __attribute__((__packed__))
+
+typedef struct {
+       uByte           bmRequestType;
+       uByte           bRequest;
+       uWord           wValue;
+       uWord           wIndex;
+       uWord           wLength;
+} UPACKED usb_device_request_t;
+
+#define UT_GET_DIR(a) ((a) & 0x80)
+#define UT_WRITE               0x00
+#define UT_READ                        0x80
+
+#define UT_GET_TYPE(a) ((a) & 0x60)
+#define UT_STANDARD            0x00
+#define UT_CLASS               0x20
+#define UT_VENDOR              0x40
+
+#define UT_GET_RECIPIENT(a) ((a) & 0x1f)
+#define UT_DEVICE              0x00
+#define UT_INTERFACE           0x01
+#define UT_ENDPOINT            0x02
+#define UT_OTHER               0x03
+
+#define UT_READ_DEVICE         (UT_READ  | UT_STANDARD | UT_DEVICE)
+#define UT_READ_INTERFACE      (UT_READ  | UT_STANDARD | UT_INTERFACE)
+#define UT_READ_ENDPOINT       (UT_READ  | UT_STANDARD | UT_ENDPOINT)
+#define UT_WRITE_DEVICE                (UT_WRITE | UT_STANDARD | UT_DEVICE)
+#define UT_WRITE_INTERFACE     (UT_WRITE | UT_STANDARD | UT_INTERFACE)
+#define UT_WRITE_ENDPOINT      (UT_WRITE | UT_STANDARD | UT_ENDPOINT)
+#define UT_READ_CLASS_DEVICE   (UT_READ  | UT_CLASS | UT_DEVICE)
+#define UT_READ_CLASS_INTERFACE        (UT_READ  | UT_CLASS | UT_INTERFACE)
+#define UT_READ_CLASS_OTHER    (UT_READ  | UT_CLASS | UT_OTHER)
+#define UT_READ_CLASS_ENDPOINT (UT_READ  | UT_CLASS | UT_ENDPOINT)
+#define UT_WRITE_CLASS_DEVICE  (UT_WRITE | UT_CLASS | UT_DEVICE)
+#define UT_WRITE_CLASS_INTERFACE (UT_WRITE | UT_CLASS | UT_INTERFACE)
+#define UT_WRITE_CLASS_OTHER   (UT_WRITE | UT_CLASS | UT_OTHER)
+#define UT_WRITE_CLASS_ENDPOINT        (UT_WRITE | UT_CLASS | UT_ENDPOINT)
+#define UT_READ_VENDOR_DEVICE  (UT_READ  | UT_VENDOR | UT_DEVICE)
+#define UT_READ_VENDOR_INTERFACE (UT_READ  | UT_VENDOR | UT_INTERFACE)
+#define UT_READ_VENDOR_OTHER   (UT_READ  | UT_VENDOR | UT_OTHER)
+#define UT_READ_VENDOR_ENDPOINT        (UT_READ  | UT_VENDOR | UT_ENDPOINT)
+#define UT_WRITE_VENDOR_DEVICE (UT_WRITE | UT_VENDOR | UT_DEVICE)
+#define UT_WRITE_VENDOR_INTERFACE (UT_WRITE | UT_VENDOR | UT_INTERFACE)
+#define UT_WRITE_VENDOR_OTHER  (UT_WRITE | UT_VENDOR | UT_OTHER)
+#define UT_WRITE_VENDOR_ENDPOINT (UT_WRITE | UT_VENDOR | UT_ENDPOINT)
+
+/* Requests */
+#define UR_GET_STATUS          0x00
+#define  USTAT_STANDARD_STATUS  0x00
+#define  WUSTAT_WUSB_FEATURE    0x01
+#define  WUSTAT_CHANNEL_INFO    0x02
+#define  WUSTAT_RECEIVED_DATA   0x03
+#define  WUSTAT_MAS_AVAILABILITY 0x04
+#define  WUSTAT_CURRENT_TRANSMIT_POWER 0x05
+#define UR_CLEAR_FEATURE       0x01
+#define UR_SET_FEATURE         0x03
+#define UR_SET_AND_TEST_FEATURE 0x0c
+#define UR_SET_ADDRESS         0x05
+#define UR_GET_DESCRIPTOR      0x06
+#define  UDESC_DEVICE          0x01
+#define  UDESC_CONFIG          0x02
+#define  UDESC_STRING          0x03
+#define  UDESC_INTERFACE       0x04
+#define  UDESC_ENDPOINT                0x05
+#define  UDESC_SS_USB_COMPANION        0x30
+#define  UDESC_DEVICE_QUALIFIER        0x06
+#define  UDESC_OTHER_SPEED_CONFIGURATION 0x07
+#define  UDESC_INTERFACE_POWER 0x08
+#define  UDESC_OTG             0x09
+#define  WUDESC_SECURITY       0x0c
+#define  WUDESC_KEY            0x0d
+#define   WUD_GET_KEY_INDEX(_wValue_) ((_wValue_) & 0xf)
+#define   WUD_GET_KEY_TYPE(_wValue_) (((_wValue_) & 0x30) >> 4)
+#define    WUD_KEY_TYPE_ASSOC    0x01
+#define    WUD_KEY_TYPE_GTK      0x02
+#define   WUD_GET_KEY_ORIGIN(_wValue_) (((_wValue_) & 0x40) >> 6)
+#define    WUD_KEY_ORIGIN_HOST   0x00
+#define    WUD_KEY_ORIGIN_DEVICE 0x01
+#define  WUDESC_ENCRYPTION_TYPE        0x0e
+#define  WUDESC_BOS            0x0f
+#define  WUDESC_DEVICE_CAPABILITY 0x10
+#define  WUDESC_WIRELESS_ENDPOINT_COMPANION 0x11
+#define  UDESC_BOS             0x0f
+#define  UDESC_DEVICE_CAPABILITY 0x10
+#define  UDESC_CS_DEVICE       0x21    /* class specific */
+#define  UDESC_CS_CONFIG       0x22
+#define  UDESC_CS_STRING       0x23
+#define  UDESC_CS_INTERFACE    0x24
+#define  UDESC_CS_ENDPOINT     0x25
+#define  UDESC_HUB             0x29
+#define UR_SET_DESCRIPTOR      0x07
+#define UR_GET_CONFIG          0x08
+#define UR_SET_CONFIG          0x09
+#define UR_GET_INTERFACE       0x0a
+#define UR_SET_INTERFACE       0x0b
+#define UR_SYNCH_FRAME         0x0c
+#define WUR_SET_ENCRYPTION      0x0d
+#define WUR_GET_ENCRYPTION     0x0e
+#define WUR_SET_HANDSHAKE      0x0f
+#define WUR_GET_HANDSHAKE      0x10
+#define WUR_SET_CONNECTION     0x11
+#define WUR_SET_SECURITY_DATA  0x12
+#define WUR_GET_SECURITY_DATA  0x13
+#define WUR_SET_WUSB_DATA      0x14
+#define  WUDATA_DRPIE_INFO     0x01
+#define  WUDATA_TRANSMIT_DATA  0x02
+#define  WUDATA_TRANSMIT_PARAMS        0x03
+#define  WUDATA_RECEIVE_PARAMS 0x04
+#define  WUDATA_TRANSMIT_POWER 0x05
+#define WUR_LOOPBACK_DATA_WRITE        0x15
+#define WUR_LOOPBACK_DATA_READ 0x16
+#define WUR_SET_INTERFACE_DS   0x17
+
+/* Feature numbers */
+#define UF_ENDPOINT_HALT       0
+#define UF_DEVICE_REMOTE_WAKEUP        1
+#define UF_TEST_MODE           2
+#define UF_DEVICE_B_HNP_ENABLE 3
+#define UF_DEVICE_A_HNP_SUPPORT        4
+#define UF_DEVICE_A_ALT_HNP_SUPPORT 5
+#define WUF_WUSB               3
+#define  WUF_TX_DRPIE          0x0
+#define  WUF_DEV_XMIT_PACKET   0x1
+#define  WUF_COUNT_PACKETS     0x2
+#define  WUF_CAPTURE_PACKETS   0x3
+#define UF_FUNCTION_SUSPEND    0
+#define UF_U1_ENABLE           48
+#define UF_U2_ENABLE           49
+#define UF_LTM_ENABLE          50
+
+/* Class requests from the USB 2.0 hub spec, table 11-15 */
+#define UCR_CLEAR_HUB_FEATURE          (0x2000 | UR_CLEAR_FEATURE)
+#define UCR_CLEAR_PORT_FEATURE         (0x2300 | UR_CLEAR_FEATURE)
+#define UCR_GET_HUB_DESCRIPTOR         (0xa000 | UR_GET_DESCRIPTOR)
+#define UCR_GET_HUB_STATUS             (0xa000 | UR_GET_STATUS)
+#define UCR_GET_PORT_STATUS            (0xa300 | UR_GET_STATUS)
+#define UCR_SET_HUB_FEATURE            (0x2000 | UR_SET_FEATURE)
+#define UCR_SET_PORT_FEATURE           (0x2300 | UR_SET_FEATURE)
+#define UCR_SET_AND_TEST_PORT_FEATURE  (0xa300 | UR_SET_AND_TEST_FEATURE)
+
+#ifdef _MSC_VER
+#include <pshpack1.h>
+#endif
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uByte           bDescriptorSubtype;
+} UPACKED usb_descriptor_t;
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+} UPACKED usb_descriptor_header_t;
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uWord           bcdUSB;
+#define UD_USB_2_0             0x0200
+#define UD_IS_USB2(d) (UGETW((d)->bcdUSB) >= UD_USB_2_0)
+       uByte           bDeviceClass;
+       uByte           bDeviceSubClass;
+       uByte           bDeviceProtocol;
+       uByte           bMaxPacketSize;
+       /* The fields below are not part of the initial descriptor. */
+       uWord           idVendor;
+       uWord           idProduct;
+       uWord           bcdDevice;
+       uByte           iManufacturer;
+       uByte           iProduct;
+       uByte           iSerialNumber;
+       uByte           bNumConfigurations;
+} UPACKED usb_device_descriptor_t;
+#define USB_DEVICE_DESCRIPTOR_SIZE 18
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uWord           wTotalLength;
+       uByte           bNumInterface;
+       uByte           bConfigurationValue;
+       uByte           iConfiguration;
+#define UC_ATT_ONE             (1 << 7)        /* must be set */
+#define UC_ATT_SELFPOWER       (1 << 6)        /* self powered */
+#define UC_ATT_WAKEUP          (1 << 5)        /* can wakeup */
+#define UC_ATT_BATTERY         (1 << 4)        /* battery powered */
+       uByte           bmAttributes;
+#define UC_BUS_POWERED         0x80
+#define UC_SELF_POWERED                0x40
+#define UC_REMOTE_WAKEUP       0x20
+       uByte           bMaxPower; /* max current in 2 mA units */
+#define UC_POWER_FACTOR 2
+} UPACKED usb_config_descriptor_t;
+#define USB_CONFIG_DESCRIPTOR_SIZE 9
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uByte           bInterfaceNumber;
+       uByte           bAlternateSetting;
+       uByte           bNumEndpoints;
+       uByte           bInterfaceClass;
+       uByte           bInterfaceSubClass;
+       uByte           bInterfaceProtocol;
+       uByte           iInterface;
+} UPACKED usb_interface_descriptor_t;
+#define USB_INTERFACE_DESCRIPTOR_SIZE 9
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uByte           bEndpointAddress;
+#define UE_GET_DIR(a)  ((a) & 0x80)
+#define UE_SET_DIR(a,d)        ((a) | (((d)&1) << 7))
+#define UE_DIR_IN      0x80
+#define UE_DIR_OUT     0x00
+#define UE_ADDR                0x0f
+#define UE_GET_ADDR(a) ((a) & UE_ADDR)
+       uByte           bmAttributes;
+#define UE_XFERTYPE    0x03
+#define  UE_CONTROL    0x00
+#define  UE_ISOCHRONOUS        0x01
+#define  UE_BULK       0x02
+#define  UE_INTERRUPT  0x03
+#define UE_GET_XFERTYPE(a)     ((a) & UE_XFERTYPE)
+#define UE_ISO_TYPE    0x0c
+#define  UE_ISO_ASYNC  0x04
+#define  UE_ISO_ADAPT  0x08
+#define  UE_ISO_SYNC   0x0c
+#define UE_GET_ISO_TYPE(a)     ((a) & UE_ISO_TYPE)
+       uWord           wMaxPacketSize;
+       uByte           bInterval;
+} UPACKED usb_endpoint_descriptor_t;
+#define USB_ENDPOINT_DESCRIPTOR_SIZE 7
+
+typedef struct ss_endpoint_companion_descriptor {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bMaxBurst;
+#define USSE_GET_MAX_STREAMS(a)                ((a) & 0x1f)
+#define USSE_SET_MAX_STREAMS(a, b)     ((a) | ((b) & 0x1f))
+#define USSE_GET_MAX_PACKET_NUM(a)     ((a) & 0x03)
+#define USSE_SET_MAX_PACKET_NUM(a, b)  ((a) | ((b) & 0x03))
+       uByte bmAttributes;
+       uWord wBytesPerInterval;
+} UPACKED ss_endpoint_companion_descriptor_t;
+#define USB_SS_ENDPOINT_COMPANION_DESCRIPTOR_SIZE 6
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uWord           bString[127];
+} UPACKED usb_string_descriptor_t;
+#define USB_MAX_STRING_LEN 128
+#define USB_LANGUAGE_TABLE 0   /* # of the string language id table */
+
+/* Hub specific request */
+#define UR_GET_BUS_STATE       0x02
+#define UR_CLEAR_TT_BUFFER     0x08
+#define UR_RESET_TT            0x09
+#define UR_GET_TT_STATE                0x0a
+#define UR_STOP_TT             0x0b
+
+/* Hub features */
+#define UHF_C_HUB_LOCAL_POWER  0
+#define UHF_C_HUB_OVER_CURRENT 1
+#define UHF_PORT_CONNECTION    0
+#define UHF_PORT_ENABLE                1
+#define UHF_PORT_SUSPEND       2
+#define UHF_PORT_OVER_CURRENT  3
+#define UHF_PORT_RESET         4
+#define UHF_PORT_L1            5
+#define UHF_PORT_POWER         8
+#define UHF_PORT_LOW_SPEED     9
+#define UHF_PORT_HIGH_SPEED    10
+#define UHF_C_PORT_CONNECTION  16
+#define UHF_C_PORT_ENABLE      17
+#define UHF_C_PORT_SUSPEND     18
+#define UHF_C_PORT_OVER_CURRENT        19
+#define UHF_C_PORT_RESET       20
+#define UHF_C_PORT_L1          23
+#define UHF_PORT_TEST          21
+#define UHF_PORT_INDICATOR     22
+
+typedef struct {
+       uByte           bDescLength;
+       uByte           bDescriptorType;
+       uByte           bNbrPorts;
+       uWord           wHubCharacteristics;
+#define UHD_PWR                        0x0003
+#define  UHD_PWR_GANGED                0x0000
+#define  UHD_PWR_INDIVIDUAL    0x0001
+#define  UHD_PWR_NO_SWITCH     0x0002
+#define UHD_COMPOUND           0x0004
+#define UHD_OC                 0x0018
+#define  UHD_OC_GLOBAL         0x0000
+#define  UHD_OC_INDIVIDUAL     0x0008
+#define  UHD_OC_NONE           0x0010
+#define UHD_TT_THINK           0x0060
+#define  UHD_TT_THINK_8                0x0000
+#define  UHD_TT_THINK_16       0x0020
+#define  UHD_TT_THINK_24       0x0040
+#define  UHD_TT_THINK_32       0x0060
+#define UHD_PORT_IND           0x0080
+       uByte           bPwrOn2PwrGood; /* delay in 2 ms units */
+#define UHD_PWRON_FACTOR 2
+       uByte           bHubContrCurrent;
+       uByte           DeviceRemovable[32]; /* max 255 ports */
+#define UHD_NOT_REMOV(desc, i) \
+    (((desc)->DeviceRemovable[(i)/8] >> ((i) % 8)) & 1)
+       /* deprecated */ uByte          PortPowerCtrlMask[1];
+} UPACKED usb_hub_descriptor_t;
+#define USB_HUB_DESCRIPTOR_SIZE 9 /* includes deprecated PortPowerCtrlMask */
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uWord           bcdUSB;
+       uByte           bDeviceClass;
+       uByte           bDeviceSubClass;
+       uByte           bDeviceProtocol;
+       uByte           bMaxPacketSize0;
+       uByte           bNumConfigurations;
+       uByte           bReserved;
+} UPACKED usb_device_qualifier_t;
+#define USB_DEVICE_QUALIFIER_SIZE 10
+
+typedef struct {
+       uByte           bLength;
+       uByte           bDescriptorType;
+       uByte           bmAttributes;
+#define UOTG_SRP       0x01
+#define UOTG_HNP       0x02
+} UPACKED usb_otg_descriptor_t;
+
+/* OTG feature selectors */
+#define UOTG_B_HNP_ENABLE      3
+#define UOTG_A_HNP_SUPPORT     4
+#define UOTG_A_ALT_HNP_SUPPORT 5
+
+typedef struct {
+       uWord           wStatus;
+/* Device status flags */
+#define UDS_SELF_POWERED               0x0001
+#define UDS_REMOTE_WAKEUP              0x0002
+/* Endpoint status flags */
+#define UES_HALT                       0x0001
+} UPACKED usb_status_t;
+
+typedef struct {
+       uWord           wHubStatus;
+#define UHS_LOCAL_POWER                        0x0001
+#define UHS_OVER_CURRENT               0x0002
+       uWord           wHubChange;
+} UPACKED usb_hub_status_t;
+
+typedef struct {
+       uWord           wPortStatus;
+#define UPS_CURRENT_CONNECT_STATUS     0x0001
+#define UPS_PORT_ENABLED               0x0002
+#define UPS_SUSPEND                    0x0004
+#define UPS_OVERCURRENT_INDICATOR      0x0008
+#define UPS_RESET                      0x0010
+#define UPS_PORT_POWER                 0x0100
+#define UPS_LOW_SPEED                  0x0200
+#define UPS_HIGH_SPEED                 0x0400
+#define UPS_PORT_TEST                  0x0800
+#define UPS_PORT_INDICATOR             0x1000
+       uWord           wPortChange;
+#define UPS_C_CONNECT_STATUS           0x0001
+#define UPS_C_PORT_ENABLED             0x0002
+#define UPS_C_SUSPEND                  0x0004
+#define UPS_C_OVERCURRENT_INDICATOR    0x0008
+#define UPS_C_PORT_RESET               0x0010
+} UPACKED usb_port_status_t;
+
+#ifdef _MSC_VER
+#include <poppack.h>
+#endif
+
+/* Device class codes */
+#define UDCLASS_IN_INTERFACE   0x00
+#define UDCLASS_COMM           0x02
+#define UDCLASS_HUB            0x09
+#define  UDSUBCLASS_HUB                0x00
+#define  UDPROTO_FSHUB         0x00
+#define  UDPROTO_HSHUBSTT      0x01
+#define  UDPROTO_HSHUBMTT      0x02
+#define UDCLASS_DIAGNOSTIC     0xdc
+#define UDCLASS_WIRELESS       0xe0
+#define  UDSUBCLASS_RF         0x01
+#define   UDPROTO_BLUETOOTH    0x01
+#define UDCLASS_VENDOR         0xff
+
+/* Interface class codes */
+#define UICLASS_UNSPEC         0x00
+
+#define UICLASS_AUDIO          0x01
+#define  UISUBCLASS_AUDIOCONTROL       1
+#define  UISUBCLASS_AUDIOSTREAM                2
+#define  UISUBCLASS_MIDISTREAM         3
+
+#define UICLASS_CDC            0x02 /* communication */
+#define  UISUBCLASS_DIRECT_LINE_CONTROL_MODEL  1
+#define  UISUBCLASS_ABSTRACT_CONTROL_MODEL     2
+#define  UISUBCLASS_TELEPHONE_CONTROL_MODEL    3
+#define  UISUBCLASS_MULTICHANNEL_CONTROL_MODEL 4
+#define  UISUBCLASS_CAPI_CONTROLMODEL          5
+#define  UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL 6
+#define  UISUBCLASS_ATM_NETWORKING_CONTROL_MODEL 7
+#define   UIPROTO_CDC_AT                       1
+
+#define UICLASS_HID            0x03
+#define  UISUBCLASS_BOOT       1
+#define  UIPROTO_BOOT_KEYBOARD 1
+
+#define UICLASS_PHYSICAL       0x05
+
+#define UICLASS_IMAGE          0x06
+
+#define UICLASS_PRINTER                0x07
+#define  UISUBCLASS_PRINTER    1
+#define  UIPROTO_PRINTER_UNI   1
+#define  UIPROTO_PRINTER_BI    2
+#define  UIPROTO_PRINTER_1284  3
+
+#define UICLASS_MASS           0x08
+#define  UISUBCLASS_RBC                1
+#define  UISUBCLASS_SFF8020I   2
+#define  UISUBCLASS_QIC157     3
+#define  UISUBCLASS_UFI                4
+#define  UISUBCLASS_SFF8070I   5
+#define  UISUBCLASS_SCSI       6
+#define  UIPROTO_MASS_CBI_I    0
+#define  UIPROTO_MASS_CBI      1
+#define  UIPROTO_MASS_BBB_OLD  2       /* Not in the spec anymore */
+#define  UIPROTO_MASS_BBB      80      /* 'P' for the Iomega Zip drive */
+
+#define UICLASS_HUB            0x09
+#define  UISUBCLASS_HUB                0
+#define  UIPROTO_FSHUB         0
+#define  UIPROTO_HSHUBSTT      0 /* Yes, same as previous */
+#define  UIPROTO_HSHUBMTT      1
+
+#define UICLASS_CDC_DATA       0x0a
+#define  UISUBCLASS_DATA               0
+#define   UIPROTO_DATA_ISDNBRI         0x30    /* Physical iface */
+#define   UIPROTO_DATA_HDLC            0x31    /* HDLC */
+#define   UIPROTO_DATA_TRANSPARENT     0x32    /* Transparent */
+#define   UIPROTO_DATA_Q921M           0x50    /* Management for Q921 */
+#define   UIPROTO_DATA_Q921            0x51    /* Data for Q921 */
+#define   UIPROTO_DATA_Q921TM          0x52    /* TEI multiplexer for Q921 */
+#define   UIPROTO_DATA_V42BIS          0x90    /* Data compression */
+#define   UIPROTO_DATA_Q931            0x91    /* Euro-ISDN */
+#define   UIPROTO_DATA_V120            0x92    /* V.24 rate adaption */
+#define   UIPROTO_DATA_CAPI            0x93    /* CAPI 2.0 commands */
+#define   UIPROTO_DATA_HOST_BASED      0xfd    /* Host based driver */
+#define   UIPROTO_DATA_PUF             0xfe    /* see Prot. Unit Func. Desc.*/
+#define   UIPROTO_DATA_VENDOR          0xff    /* Vendor specific */
+
+#define UICLASS_SMARTCARD      0x0b
+
+/*#define UICLASS_FIRM_UPD     0x0c*/
+
+#define UICLASS_SECURITY       0x0d
+
+#define UICLASS_DIAGNOSTIC     0xdc
+
+#define UICLASS_WIRELESS       0xe0
+#define  UISUBCLASS_RF                 0x01
+#define   UIPROTO_BLUETOOTH            0x01
+
+#define UICLASS_APPL_SPEC      0xfe
+#define  UISUBCLASS_FIRMWARE_DOWNLOAD  1
+#define  UISUBCLASS_IRDA               2
+#define  UIPROTO_IRDA                  0
+
+#define UICLASS_VENDOR         0xff
+
+#define USB_HUB_MAX_DEPTH 5
+
+/*
+ * Minimum time a device needs to be powered down to go through
+ * a power cycle.  XXX Are these time in the spec?
+ */
+#define USB_POWER_DOWN_TIME    200 /* ms */
+#define USB_PORT_POWER_DOWN_TIME       100 /* ms */
+
+#if 0
+/* These are the values from the spec. */
+#define USB_PORT_RESET_DELAY   10  /* ms */
+#define USB_PORT_ROOT_RESET_DELAY 50  /* ms */
+#define USB_PORT_RESET_RECOVERY        10  /* ms */
+#define USB_PORT_POWERUP_DELAY 100 /* ms */
+#define USB_SET_ADDRESS_SETTLE 2   /* ms */
+#define USB_RESUME_DELAY       (20*5)  /* ms */
+#define USB_RESUME_WAIT                10  /* ms */
+#define USB_RESUME_RECOVERY    10  /* ms */
+#define USB_EXTRA_POWER_UP_TIME        0   /* ms */
+#else
+/* Allow for marginal (i.e. non-conforming) devices. */
+#define USB_PORT_RESET_DELAY   50  /* ms */
+#define USB_PORT_ROOT_RESET_DELAY 250  /* ms */
+#define USB_PORT_RESET_RECOVERY        250  /* ms */
+#define USB_PORT_POWERUP_DELAY 300 /* ms */
+#define USB_SET_ADDRESS_SETTLE 10  /* ms */
+#define USB_RESUME_DELAY       (50*5)  /* ms */
+#define USB_RESUME_WAIT                50  /* ms */
+#define USB_RESUME_RECOVERY    50  /* ms */
+#define USB_EXTRA_POWER_UP_TIME        20  /* ms */
+#endif
+
+#define USB_MIN_POWER          100 /* mA */
+#define USB_MAX_POWER          500 /* mA */
+
+#define USB_BUS_RESET_DELAY    100 /* ms XXX?*/
+
+#define USB_UNCONFIG_NO 0
+#define USB_UNCONFIG_INDEX (-1)
+
+/*** ioctl() related stuff ***/
+
+struct usb_ctl_request {
+       int     ucr_addr;
+       usb_device_request_t ucr_request;
+       void    *ucr_data;
+       int     ucr_flags;
+#define USBD_SHORT_XFER_OK     0x04    /* allow short reads */
+       int     ucr_actlen;             /* actual length transferred */
+};
+
+struct usb_alt_interface {
+       int     uai_config_index;
+       int     uai_interface_index;
+       int     uai_alt_no;
+};
+
+#define USB_CURRENT_CONFIG_INDEX (-1)
+#define USB_CURRENT_ALT_INDEX (-1)
+
+struct usb_config_desc {
+       int     ucd_config_index;
+       usb_config_descriptor_t ucd_desc;
+};
+
+struct usb_interface_desc {
+       int     uid_config_index;
+       int     uid_interface_index;
+       int     uid_alt_index;
+       usb_interface_descriptor_t uid_desc;
+};
+
+struct usb_endpoint_desc {
+       int     ued_config_index;
+       int     ued_interface_index;
+       int     ued_alt_index;
+       int     ued_endpoint_index;
+       usb_endpoint_descriptor_t ued_desc;
+};
+
+struct usb_full_desc {
+       int     ufd_config_index;
+       u_int   ufd_size;
+       u_char  *ufd_data;
+};
+
+struct usb_string_desc {
+       int     usd_string_index;
+       int     usd_language_id;
+       usb_string_descriptor_t usd_desc;
+};
+
+struct usb_ctl_report_desc {
+       int     ucrd_size;
+       u_char  ucrd_data[1024];        /* filled data size will vary */
+};
+
+typedef struct { u_int32_t cookie; } usb_event_cookie_t;
+
+#define USB_MAX_DEVNAMES 4
+#define USB_MAX_DEVNAMELEN 16
+struct usb_device_info {
+       u_int8_t        udi_bus;
+       u_int8_t        udi_addr;       /* device address */
+       usb_event_cookie_t udi_cookie;
+       char            udi_product[USB_MAX_STRING_LEN];
+       char            udi_vendor[USB_MAX_STRING_LEN];
+       char            udi_release[8];
+       u_int16_t       udi_productNo;
+       u_int16_t       udi_vendorNo;
+       u_int16_t       udi_releaseNo;
+       u_int8_t        udi_class;
+       u_int8_t        udi_subclass;
+       u_int8_t        udi_protocol;
+       u_int8_t        udi_config;
+       u_int8_t        udi_speed;
+#define USB_SPEED_UNKNOWN      0
+#define USB_SPEED_LOW          1
+#define USB_SPEED_FULL         2
+#define USB_SPEED_HIGH         3
+#define USB_SPEED_VARIABLE     4
+#define USB_SPEED_SUPER                5
+       int             udi_power;      /* power consumption in mA, 0 if selfpowered */
+       int             udi_nports;
+       char            udi_devnames[USB_MAX_DEVNAMES][USB_MAX_DEVNAMELEN];
+       u_int8_t        udi_ports[16];/* hub only: addresses of devices on ports */
+#define USB_PORT_ENABLED 0xff
+#define USB_PORT_SUSPENDED 0xfe
+#define USB_PORT_POWERED 0xfd
+#define USB_PORT_DISABLED 0xfc
+};
+
+struct usb_ctl_report {
+       int     ucr_report;
+       u_char  ucr_data[1024]; /* filled data size will vary */
+};
+
+struct usb_device_stats {
+       u_long  uds_requests[4];        /* indexed by transfer type UE_* */
+};
+
+#define WUSB_MIN_IE                    0x80
+#define WUSB_WCTA_IE                   0x80
+#define WUSB_WCONNECTACK_IE            0x81
+#define WUSB_WHOSTINFO_IE              0x82
+#define  WUHI_GET_CA(_bmAttributes_) ((_bmAttributes_) & 0x3)
+#define   WUHI_CA_RECONN               0x00
+#define   WUHI_CA_LIMITED              0x01
+#define   WUHI_CA_ALL                  0x03
+#define  WUHI_GET_MLSI(_bmAttributes_) (((_bmAttributes_) & 0x38) >> 3)
+#define WUSB_WCHCHANGEANNOUNCE_IE      0x83
+#define WUSB_WDEV_DISCONNECT_IE                0x84
+#define WUSB_WHOST_DISCONNECT_IE       0x85
+#define WUSB_WRELEASE_CHANNEL_IE       0x86
+#define WUSB_WWORK_IE                  0x87
+#define WUSB_WCHANNEL_STOP_IE          0x88
+#define WUSB_WDEV_KEEPALIVE_IE         0x89
+#define WUSB_WISOCH_DISCARD_IE         0x8A
+#define WUSB_WRESETDEVICE_IE           0x8B
+#define WUSB_WXMIT_PACKET_ADJUST_IE    0x8C
+#define WUSB_MAX_IE                    0x8C
+
+/* Device Notification Types */
+
+#define WUSB_DN_MIN                    0x01
+#define WUSB_DN_CONNECT                        0x01
+# define WUSB_DA_OLDCONN       0x00
+# define WUSB_DA_NEWCONN       0x01
+# define WUSB_DA_SELF_BEACON   0x02
+# define WUSB_DA_DIR_BEACON    0x04
+# define WUSB_DA_NO_BEACON     0x06
+#define WUSB_DN_DISCONNECT             0x02
+#define WUSB_DN_EPRDY                  0x03
+#define WUSB_DN_MASAVAILCHANGED                0x04
+#define WUSB_DN_REMOTEWAKEUP           0x05
+#define WUSB_DN_SLEEP                  0x06
+#define WUSB_DN_ALIVE                  0x07
+#define WUSB_DN_MAX                    0x07
+
+#ifdef _MSC_VER
+#include <pshpack1.h>
+#endif
+
+/* WUSB Handshake Data.  Used during the SET/GET HANDSHAKE requests */
+typedef struct wusb_hndshk_data {
+       uByte bMessageNumber;
+       uByte bStatus;
+       uByte tTKID[3];
+       uByte bReserved;
+       uByte CDID[16];
+       uByte Nonce[16];
+       uByte MIC[8];
+} UPACKED wusb_hndshk_data_t;
+#define WUSB_HANDSHAKE_LEN_FOR_MIC     38
+
+/* WUSB Connection Context */
+typedef struct wusb_conn_context {
+       uByte CHID [16];
+       uByte CDID [16];
+       uByte CK [16];
+} UPACKED wusb_conn_context_t;
+
+/* WUSB Security Descriptor */
+typedef struct wusb_security_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uWord wTotalLength;
+       uByte bNumEncryptionTypes;
+} UPACKED wusb_security_desc_t;
+
+/* WUSB Encryption Type Descriptor */
+typedef struct wusb_encrypt_type_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+
+       uByte bEncryptionType;
+#define WUETD_UNSECURE         0
+#define WUETD_WIRED            1
+#define WUETD_CCM_1            2
+#define WUETD_RSA_1            3
+
+       uByte bEncryptionValue;
+       uByte bAuthKeyIndex;
+} UPACKED wusb_encrypt_type_desc_t;
+
+/* WUSB Key Descriptor */
+typedef struct wusb_key_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte tTKID[3];
+       uByte bReserved;
+       uByte KeyData[1];       /* variable length */
+} UPACKED wusb_key_desc_t;
+
+/* WUSB BOS Descriptor (Binary device Object Store) */
+typedef struct wusb_bos_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uWord wTotalLength;
+       uByte bNumDeviceCaps;
+} UPACKED wusb_bos_desc_t;
+
+#define USB_DEVICE_CAPABILITY_20_EXTENSION     0x02
+typedef struct usb_dev_cap_20_ext_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bDevCapabilityType;
+#define USB_20_EXT_LPM                         0x02
+       uDWord bmAttributes;
+} UPACKED usb_dev_cap_20_ext_desc_t;
+
+#define USB_DEVICE_CAPABILITY_SS_USB           0x03
+typedef struct usb_dev_cap_ss_usb {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bDevCapabilityType;
+#define USB_DC_SS_USB_LTM_CAPABLE              0x02
+       uByte bmAttributes;
+#define USB_DC_SS_USB_SPEED_SUPPORT_LOW                0x01
+#define USB_DC_SS_USB_SPEED_SUPPORT_FULL       0x02
+#define USB_DC_SS_USB_SPEED_SUPPORT_HIGH       0x04
+#define USB_DC_SS_USB_SPEED_SUPPORT_SS         0x08
+       uWord wSpeedsSupported;
+       uByte bFunctionalitySupport;
+       uByte bU1DevExitLat;
+       uWord wU2DevExitLat;
+} UPACKED usb_dev_cap_ss_usb_t;
+
+#define USB_DEVICE_CAPABILITY_CONTAINER_ID     0x04
+typedef struct usb_dev_cap_container_id {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bDevCapabilityType;
+       uByte bReserved;
+       uByte containerID[16];
+} UPACKED usb_dev_cap_container_id_t;
+
+/* Device Capability Type Codes */
+#define WUSB_DEVICE_CAPABILITY_WIRELESS_USB 0x01
+
+/* Device Capability Descriptor */
+typedef struct wusb_dev_cap_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bDevCapabilityType;
+       uByte caps[1];  /* Variable length */
+} UPACKED wusb_dev_cap_desc_t;
+
+/* Device Capability Descriptor */
+typedef struct wusb_dev_cap_uwb_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bDevCapabilityType;
+       uByte bmAttributes;
+       uWord wPHYRates;        /* Bitmap */
+       uByte bmTFITXPowerInfo;
+       uByte bmFFITXPowerInfo;
+       uWord bmBandGroup;
+       uByte bReserved;
+} UPACKED wusb_dev_cap_uwb_desc_t;
+
+/* Wireless USB Endpoint Companion Descriptor */
+typedef struct wusb_endpoint_companion_desc {
+       uByte bLength;
+       uByte bDescriptorType;
+       uByte bMaxBurst;
+       uByte bMaxSequence;
+       uWord wMaxStreamDelay;
+       uWord wOverTheAirPacketSize;
+       uByte bOverTheAirInterval;
+       uByte bmCompAttributes;
+} UPACKED wusb_endpoint_companion_desc_t;
+
+/* Wireless USB Numeric Association M1 Data Structure */
+typedef struct wusb_m1_data {
+       uByte version;
+       uWord langId;
+       uByte deviceFriendlyNameLength;
+       uByte sha_256_m3[32];
+       uByte deviceFriendlyName[256];
+} UPACKED wusb_m1_data_t;
+
+typedef struct wusb_m2_data {
+       uByte version;
+       uWord langId;
+       uByte hostFriendlyNameLength;
+       uByte pkh[384];
+       uByte hostFriendlyName[256];
+} UPACKED wusb_m2_data_t;
+
+typedef struct wusb_m3_data {
+       uByte pkd[384];
+       uByte nd;
+} UPACKED wusb_m3_data_t;
+
+typedef struct wusb_m4_data {
+       uDWord _attributeTypeIdAndLength_1;
+       uWord  associationTypeId;
+
+       uDWord _attributeTypeIdAndLength_2;
+       uWord  associationSubTypeId;
+
+       uDWord _attributeTypeIdAndLength_3;
+       uDWord length;
+
+       uDWord _attributeTypeIdAndLength_4;
+       uDWord associationStatus;
+
+       uDWord _attributeTypeIdAndLength_5;
+       uByte  chid[16];
+
+       uDWord _attributeTypeIdAndLength_6;
+       uByte  cdid[16];
+
+       uDWord _attributeTypeIdAndLength_7;
+       uByte  bandGroups[2];
+} UPACKED wusb_m4_data_t;
+
+#ifdef _MSC_VER
+#include <poppack.h>
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _USB_H_ */
diff --git a/drivers/usb/host/dwc_otg/Makefile b/drivers/usb/host/dwc_otg/Makefile
new file mode 100644
index 0000000..c4c6e4e
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/Makefile
@@ -0,0 +1,80 @@
+#
+# Makefile for DWC_otg Highspeed USB controller driver
+#
+
+ifneq ($(KERNELRELEASE),)
+
+# Use the BUS_INTERFACE variable to compile the software for either 
+# PCI(PCI_INTERFACE) or LM(LM_INTERFACE) bus.
+ifeq ($(BUS_INTERFACE),)
+#      BUS_INTERFACE = -DPCI_INTERFACE
+#      BUS_INTERFACE = -DLM_INTERFACE
+        BUS_INTERFACE = -DPLATFORM_INTERFACE
+endif
+
+#EXTRA_CFLAGS  += -DDEBUG
+#EXTRA_CFLAGS  += -DDWC_OTG_DEBUGLEV=1 # reduce common debug msgs
+
+# Use one of the following flags to compile the software in host-only or
+# device-only mode.
+#EXTRA_CFLAGS        += -DDWC_HOST_ONLY
+#EXTRA_CFLAGS        += -DDWC_DEVICE_ONLY
+
+EXTRA_CFLAGS   += -Dlinux -DDWC_HS_ELECT_TST
+#EXTRA_CFLAGS  += -DDWC_EN_ISOC
+EXTRA_CFLAGS           += -I$(obj)/../dwc_common_port
+#EXTRA_CFLAGS          += -I$(PORTLIB)
+EXTRA_CFLAGS           += -DDWC_LINUX
+EXTRA_CFLAGS           += $(CFI)
+EXTRA_CFLAGS   += $(BUS_INTERFACE)
+#EXTRA_CFLAGS  += -DDWC_DEV_SRPCAP
+
+obj-$(CONFIG_USB_DWCOTG) += dwc_otg.o
+
+dwc_otg-objs   := dwc_otg_driver.o dwc_otg_attr.o 
+dwc_otg-objs   += dwc_otg_cil.o dwc_otg_cil_intr.o 
+dwc_otg-objs   += dwc_otg_pcd_linux.o dwc_otg_pcd.o dwc_otg_pcd_intr.o 
+dwc_otg-objs   += dwc_otg_hcd.o dwc_otg_hcd_linux.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o dwc_otg_hcd_ddma.o
+dwc_otg-objs   += dwc_otg_adp.o
+ifneq ($(CFI),)
+dwc_otg-objs   += dwc_otg_cfi.o
+endif
+
+kernrelwd := $(subst ., ,$(KERNELRELEASE))
+kernrel3 := $(word 1,$(kernrelwd)).$(word 2,$(kernrelwd)).$(word 3,$(kernrelwd))
+
+ifneq ($(kernrel3),2.6.20)
+EXTRA_CFLAGS += $(CPPFLAGS)
+endif
+
+else
+
+PWD            := $(shell pwd)
+PORTLIB                := $(PWD)/../dwc_common_port
+
+# Command paths
+CTAGS          := $(CTAGS)
+DOXYGEN                := $(DOXYGEN)
+
+default: portlib
+       $(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+
+install: default
+       $(MAKE) -C$(KDIR) M=$(PORTLIB) modules_install
+       $(MAKE) -C$(KDIR) M=$(PWD) modules_install      
+
+portlib:
+       $(MAKE) -C$(KDIR) M=$(PORTLIB) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+       cp $(PORTLIB)/Module.symvers $(PWD)/
+
+docs:  $(wildcard *.[hc]) doc/doxygen.cfg
+       $(DOXYGEN) doc/doxygen.cfg
+
+tags:  $(wildcard *.[hc])
+       $(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
+
+
+clean:
+       rm -rf   *.o *.ko .*cmd *.mod.c .tmp_versions Module.symvers
+
+endif
diff --git a/drivers/usb/host/dwc_otg/doc/doxygen.cfg b/drivers/usb/host/dwc_otg/doc/doxygen.cfg
new file mode 100644
index 0000000..537c676
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/doc/doxygen.cfg
@@ -0,0 +1,224 @@
+# Doxyfile 1.3.9.1
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+PROJECT_NAME           = "DesignWare USB 2.0 OTG Controller (DWC_otg) Device Driver"
+PROJECT_NUMBER         = v3.00a
+OUTPUT_DIRECTORY       = ./doc/
+CREATE_SUBDIRS         = NO
+OUTPUT_LANGUAGE        = English
+BRIEF_MEMBER_DESC      = YES
+REPEAT_BRIEF           = YES
+ABBREVIATE_BRIEF       = "The $name class" \
+                         "The $name widget" \
+                         "The $name file" \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+ALWAYS_DETAILED_SEC    = NO
+INLINE_INHERITED_MEMB  = NO
+FULL_PATH_NAMES        = NO
+STRIP_FROM_PATH        = 
+STRIP_FROM_INC_PATH    = 
+SHORT_NAMES            = NO
+JAVADOC_AUTOBRIEF      = YES
+MULTILINE_CPP_IS_BRIEF = NO
+INHERIT_DOCS           = YES
+DISTRIBUTE_GROUP_DOC   = NO
+TAB_SIZE               = 8
+ALIASES                = 
+OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_JAVA   = NO
+SUBGROUPING            = YES
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+EXTRACT_ALL            = NO
+EXTRACT_PRIVATE        = YES
+EXTRACT_STATIC         = YES
+EXTRACT_LOCAL_CLASSES  = YES
+EXTRACT_LOCAL_METHODS  = NO
+HIDE_UNDOC_MEMBERS     = NO
+HIDE_UNDOC_CLASSES     = NO
+HIDE_FRIEND_COMPOUNDS  = NO
+HIDE_IN_BODY_DOCS      = NO
+INTERNAL_DOCS          = NO
+CASE_SENSE_NAMES       = NO
+HIDE_SCOPE_NAMES       = NO
+SHOW_INCLUDE_FILES     = YES
+INLINE_INFO            = YES
+SORT_MEMBER_DOCS       = NO
+SORT_BRIEF_DOCS        = NO
+SORT_BY_SCOPE_NAME     = NO
+GENERATE_TODOLIST      = YES
+GENERATE_TESTLIST      = YES
+GENERATE_BUGLIST       = YES
+GENERATE_DEPRECATEDLIST= YES
+ENABLED_SECTIONS       = 
+MAX_INITIALIZER_LINES  = 30
+SHOW_USED_FILES        = YES
+SHOW_DIRECTORIES       = YES
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+QUIET                  = YES
+WARNINGS               = YES
+WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_DOC_ERROR      = YES
+WARN_FORMAT            = "$file:$line: $text"
+WARN_LOGFILE           = 
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+INPUT                  = .
+FILE_PATTERNS          = *.c \
+                         *.h \
+                         ./linux/*.c \
+                         ./linux/*.h
+RECURSIVE              = NO
+EXCLUDE                = ./test/ \
+                         ./dwc_otg/.AppleDouble/
+EXCLUDE_SYMLINKS       = YES
+EXCLUDE_PATTERNS       = *.mod.*
+EXAMPLE_PATH           = 
+EXAMPLE_PATTERNS       = *
+EXAMPLE_RECURSIVE      = NO
+IMAGE_PATH             = 
+INPUT_FILTER           = 
+FILTER_PATTERNS        = 
+FILTER_SOURCE_FILES    = NO
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+SOURCE_BROWSER         = YES
+INLINE_SOURCES         = NO
+STRIP_CODE_COMMENTS    = YES
+REFERENCED_BY_RELATION = NO
+REFERENCES_RELATION    = NO
+VERBATIM_HEADERS       = NO
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+ALPHABETICAL_INDEX     = NO
+COLS_IN_ALPHA_INDEX    = 5
+IGNORE_PREFIX          = 
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+GENERATE_HTML          = YES
+HTML_OUTPUT            = html
+HTML_FILE_EXTENSION    = .html
+HTML_HEADER            = 
+HTML_FOOTER            = 
+HTML_STYLESHEET        = 
+HTML_ALIGN_MEMBERS     = YES
+GENERATE_HTMLHELP      = NO
+CHM_FILE               = 
+HHC_LOCATION           = 
+GENERATE_CHI           = NO
+BINARY_TOC             = NO
+TOC_EXPAND             = NO
+DISABLE_INDEX          = NO
+ENUM_VALUES_PER_LINE   = 4
+GENERATE_TREEVIEW      = YES
+TREEVIEW_WIDTH         = 250
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+GENERATE_LATEX         = NO
+LATEX_OUTPUT           = latex
+LATEX_CMD_NAME         = latex
+MAKEINDEX_CMD_NAME     = makeindex
+COMPACT_LATEX          = NO
+PAPER_TYPE             = a4wide
+EXTRA_PACKAGES         = 
+LATEX_HEADER           = 
+PDF_HYPERLINKS         = NO
+USE_PDFLATEX           = NO
+LATEX_BATCHMODE        = NO
+LATEX_HIDE_INDICES     = NO
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+GENERATE_RTF           = NO
+RTF_OUTPUT             = rtf
+COMPACT_RTF            = NO
+RTF_HYPERLINKS         = NO
+RTF_STYLESHEET_FILE    = 
+RTF_EXTENSIONS_FILE    = 
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+GENERATE_MAN           = NO
+MAN_OUTPUT             = man
+MAN_EXTENSION          = .3
+MAN_LINKS              = NO
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+GENERATE_XML           = NO
+XML_OUTPUT             = xml
+XML_SCHEMA             = 
+XML_DTD                = 
+XML_PROGRAMLISTING     = YES
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+GENERATE_AUTOGEN_DEF   = NO
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+GENERATE_PERLMOD       = NO
+PERLMOD_LATEX          = NO
+PERLMOD_PRETTY         = YES
+PERLMOD_MAKEVAR_PREFIX = 
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor   
+#---------------------------------------------------------------------------
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = YES
+EXPAND_ONLY_PREDEF     = YES
+SEARCH_INCLUDES        = YES
+INCLUDE_PATH           = 
+INCLUDE_FILE_PATTERNS  = 
+PREDEFINED             = DEVICE_ATTR DWC_EN_ISOC
+EXPAND_AS_DEFINED      = DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW DWC_OTG_DEVICE_ATTR_BITFIELD_STORE DWC_OTG_DEVICE_ATTR_BITFIELD_RW DWC_OTG_DEVICE_ATTR_BITFIELD_RO DWC_OTG_DEVICE_ATTR_REG_SHOW DWC_OTG_DEVICE_ATTR_REG_STORE DWC_OTG_DEVICE_ATTR_REG32_RW DWC_OTG_DEVICE_ATTR_REG32_RO DWC_EN_ISOC
+SKIP_FUNCTION_MACROS   = NO
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references   
+#---------------------------------------------------------------------------
+TAGFILES               = 
+GENERATE_TAGFILE       = 
+ALLEXTERNALS           = NO
+EXTERNAL_GROUPS        = YES
+PERL_PATH              = /usr/bin/perl
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool   
+#---------------------------------------------------------------------------
+CLASS_DIAGRAMS         = YES
+HIDE_UNDOC_RELATIONS   = YES
+HAVE_DOT               = NO
+CLASS_GRAPH            = YES
+COLLABORATION_GRAPH    = YES
+UML_LOOK               = NO
+TEMPLATE_RELATIONS     = NO
+INCLUDE_GRAPH          = YES
+INCLUDED_BY_GRAPH      = YES
+CALL_GRAPH             = NO
+GRAPHICAL_HIERARCHY    = YES
+DOT_IMAGE_FORMAT       = png
+DOT_PATH               = 
+DOTFILE_DIRS           = 
+MAX_DOT_GRAPH_DEPTH    = 1000
+GENERATE_LEGEND        = YES
+DOT_CLEANUP            = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine   
+#---------------------------------------------------------------------------
+SEARCHENGINE           = NO
diff --git a/drivers/usb/host/dwc_otg/dummy_audio.c b/drivers/usb/host/dwc_otg/dummy_audio.c
new file mode 100644
index 0000000..530ac8b
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dummy_audio.c
@@ -0,0 +1,1575 @@
+/*
+ * zero.c -- Gadget Zero, for USB development
+ *
+ * Copyright (C) 2003-2004 David Brownell
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*
+ * Gadget Zero only needs two bulk endpoints, and is an example of how you
+ * can write a hardware-agnostic gadget driver running inside a USB device.
+ *
+ * Hardware details are visible (see CONFIG_USB_ZERO_* below) but don't
+ * affect most of the driver.
+ *
+ * Use it with the Linux host/master side "usbtest" driver to get a basic
+ * functional test of your device-side usb stack, or with "usb-skeleton".
+ *
+ * It supports two similar configurations.  One sinks whatever the usb host
+ * writes, and in return sources zeroes.  The other loops whatever the host
+ * writes back, so the host can read it.  Module options include:
+ *
+ *   buflen=N          default N=4096, buffer size used
+ *   qlen=N            default N=32, how many buffers in the loopback queue
+ *   loopdefault       default false, list loopback config first
+ *
+ * Many drivers will only have one configuration, letting them be much
+ * simpler if they also don't support high speed operation (like this
+ * driver does).
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/uts.h>
+#include <linux/version.h>
+#include <linux/device.h>
+#include <linux/moduleparam.h>
+#include <linux/proc_fs.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#include <linux/usb_gadget.h>
+
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+static int utf8_to_utf16le(const char *s, u16 *cp, unsigned len)
+{
+       int     count = 0;
+       u8      c;
+       u16     uchar;
+
+       /* this insists on correct encodings, though not minimal ones.
+        * BUT it currently rejects legit 4-byte UTF-8 code points,
+        * which need surrogate pairs.  (Unicode 3.1 can use them.)
+        */
+       while (len != 0 && (c = (u8) *s++) != 0) {
+               if (unlikely(c & 0x80)) {
+                       // 2-byte sequence:
+                       // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+                       if ((c & 0xe0) == 0xc0) {
+                               uchar = (c & 0x1f) << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                       // 3-byte sequence (most CJKV characters):
+                       // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+                       } else if ((c & 0xf0) == 0xe0) {
+                               uchar = (c & 0x0f) << 12;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c << 6;
+
+                               c = (u8) *s++;
+                               if ((c & 0xc0) != 0xc0)
+                                       goto fail;
+                               c &= 0x3f;
+                               uchar |= c;
+
+                               /* no bogus surrogates */
+                               if (0xd800 <= uchar && uchar <= 0xdfff)
+                                       goto fail;
+
+                       // 4-byte sequence (surrogate pairs, currently rare):
+                       // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+                       //     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+                       // (uuuuu = wwww + 1)
+                       // FIXME accept the surrogate code points (only)
+
+                       } else
+                               goto fail;
+               } else
+                       uchar = c;
+               put_unaligned (cpu_to_le16 (uchar), cp++);
+               count++;
+               len--;
+       }
+       return count;
+fail:
+       return -1;
+}
+
+
+/**
+ * usb_gadget_get_string - fill out a string descriptor 
+ * @table: of c strings encoded using UTF-8
+ * @id: string id, from low byte of wValue in get string descriptor
+ * @buf: at least 256 bytes
+ *
+ * Finds the UTF-8 string matching the ID, and converts it into a
+ * string descriptor in utf16-le.
+ * Returns length of descriptor (always even) or negative errno
+ *
+ * If your driver needs stings in multiple languages, you'll probably
+ * "switch (wIndex) { ... }"  in your ep0 string descriptor logic,
+ * using this routine after choosing which set of UTF-8 strings to use.
+ * Note that US-ASCII is a strict subset of UTF-8; any string bytes with
+ * the eighth bit set will be multibyte UTF-8 characters, not ISO-8859/1
+ * characters (which are also widely used in C strings).
+ */
+int
+usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf)
+{
+       struct usb_string       *s;
+       int                     len;
+
+       /* descriptor 0 has the language id */
+       if (id == 0) {
+               buf [0] = 4;
+               buf [1] = USB_DT_STRING;
+               buf [2] = (u8) table->language;
+               buf [3] = (u8) (table->language >> 8);
+               return 4;
+       }
+       for (s = table->strings; s && s->s; s++)
+               if (s->id == id)
+                       break;
+
+       /* unrecognized: stall. */
+       if (!s || !s->s)
+               return -EINVAL;
+
+       /* string descriptors have length, tag, then UTF16-LE text */
+       len = min ((size_t) 126, strlen (s->s));
+       memset (buf + 2, 0, 2 * len);   /* zero all the bytes */
+       len = utf8_to_utf16le(s->s, (u16 *)&buf[2], len);
+       if (len < 0)
+               return -EINVAL;
+       buf [0] = (len + 1) * 2;
+       buf [1] = USB_DT_STRING;
+       return buf [0];
+}
+
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+/**
+ * usb_descriptor_fillbuf - fill buffer with descriptors
+ * @buf: Buffer to be filled
+ * @buflen: Size of buf
+ * @src: Array of descriptor pointers, terminated by null pointer.
+ *
+ * Copies descriptors into the buffer, returning the length or a
+ * negative error code if they can't all be copied.  Useful when
+ * assembling descriptors for an associated set of interfaces used
+ * as part of configuring a composite device; or in other cases where
+ * sets of descriptors need to be marshaled.
+ */
+int
+usb_descriptor_fillbuf(void *buf, unsigned buflen,
+               const struct usb_descriptor_header **src)
+{
+       u8      *dest = buf;
+
+       if (!src)
+               return -EINVAL;
+
+       /* fill buffer from src[] until null descriptor ptr */
+       for (; 0 != *src; src++) {
+               unsigned                len = (*src)->bLength;
+
+               if (len > buflen)
+                       return -EINVAL;
+               memcpy(dest, *src, len);
+               buflen -= len;
+               dest += len;
+       }
+       return dest - (u8 *)buf;
+}
+
+
+/**
+ * usb_gadget_config_buf - builts a complete configuration descriptor
+ * @config: Header for the descriptor, including characteristics such
+ *     as power requirements and number of interfaces.
+ * @desc: Null-terminated vector of pointers to the descriptors (interface,
+ *     endpoint, etc) defining all functions in this device configuration.
+ * @buf: Buffer for the resulting configuration descriptor.
+ * @length: Length of buffer.  If this is not big enough to hold the
+ *     entire configuration descriptor, an error code will be returned.
+ *
+ * This copies descriptors into the response buffer, building a descriptor
+ * for that configuration.  It returns the buffer length or a negative
+ * status code.  The config.wTotalLength field is set to match the length
+ * of the result, but other descriptor fields (including power usage and
+ * interface count) must be set by the caller.
+ *
+ * Gadget drivers could use this when constructing a config descriptor
+ * in response to USB_REQ_GET_DESCRIPTOR.  They will need to patch the
+ * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed.
+ */
+int usb_gadget_config_buf(
+       const struct usb_config_descriptor      *config,
+       void                                    *buf,
+       unsigned                                length,
+       const struct usb_descriptor_header      **desc
+)
+{
+       struct usb_config_descriptor            *cp = buf;
+       int                                     len;
+
+       /* config descriptor first */
+       if (length < USB_DT_CONFIG_SIZE || !desc)
+               return -EINVAL;
+       *cp = *config; 
+
+       /* then interface/endpoint/class/vendor/... */
+       len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf,
+                       length - USB_DT_CONFIG_SIZE, desc);
+       if (len < 0)
+               return len;
+       len += USB_DT_CONFIG_SIZE;
+       if (len > 0xffff)
+               return -EINVAL;
+
+       /* patch up the config descriptor */
+       cp->bLength = USB_DT_CONFIG_SIZE;
+       cp->bDescriptorType = USB_DT_CONFIG;
+       cp->wTotalLength = cpu_to_le16(len);
+       cp->bmAttributes |= USB_CONFIG_ATT_ONE;
+       return len;
+}
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+#define RBUF_LEN (1024*1024)
+static int rbuf_start;
+static int rbuf_len;
+static __u8 rbuf[RBUF_LEN];
+
+/*-------------------------------------------------------------------------*/
+
+#define DRIVER_VERSION         "St Patrick's Day 2004"
+
+static const char shortname [] = "zero";
+static const char longname [] = "YAMAHA YST-MS35D USB Speaker  ";
+
+static const char source_sink [] = "source and sink data";
+static const char loopback [] = "loop input to output";
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * driver assumes self-powered hardware, and
+ * has no way for users to trigger remote wakeup.
+ *
+ * this version autoconfigures as much as possible,
+ * which is reasonable for most "bulk-only" drivers.
+ */
+static const char *EP_IN_NAME;         /* source */
+static const char *EP_OUT_NAME;                /* sink */
+
+/*-------------------------------------------------------------------------*/
+
+/* big enough to hold our biggest descriptor */
+#define USB_BUFSIZ     512
+
+struct zero_dev {
+       spinlock_t              lock;
+       struct usb_gadget       *gadget;
+       struct usb_request      *req;           /* for control responses */
+
+       /* when configured, we have one of two configs:
+        * - source data (in to host) and sink it (out from host)
+        * - or loop it back (out from host back in to host)
+        */
+       u8                      config;
+       struct usb_ep           *in_ep, *out_ep;
+
+       /* autoresume timer */
+       struct timer_list       resume;
+};
+
+#define xprintk(d,level,fmt,args...) \
+       dev_printk(level , &(d)->gadget->dev , fmt , ## args)
+
+#ifdef DEBUG
+#define DBG(dev,fmt,args...) \
+       xprintk(dev , KERN_DEBUG , fmt , ## args)
+#else
+#define DBG(dev,fmt,args...) \
+       do { } while (0)
+#endif /* DEBUG */
+
+#ifdef VERBOSE
+#define VDBG   DBG
+#else
+#define VDBG(dev,fmt,args...) \
+       do { } while (0)
+#endif /* VERBOSE */
+
+#define ERROR(dev,fmt,args...) \
+       xprintk(dev , KERN_ERR , fmt , ## args)
+#define WARN(dev,fmt,args...) \
+       xprintk(dev , KERN_WARNING , fmt , ## args)
+#define INFO(dev,fmt,args...) \
+       xprintk(dev , KERN_INFO , fmt , ## args)
+
+/*-------------------------------------------------------------------------*/
+
+static unsigned buflen = 4096;
+static unsigned qlen = 32;
+static unsigned pattern = 0;
+
+module_param (buflen, uint, S_IRUGO|S_IWUSR);
+module_param (qlen, uint, S_IRUGO|S_IWUSR);
+module_param (pattern, uint, S_IRUGO|S_IWUSR);
+
+/*
+ * if it's nonzero, autoresume says how many seconds to wait
+ * before trying to wake up the host after suspend.
+ */
+static unsigned autoresume = 0;
+module_param (autoresume, uint, 0);
+
+/*
+ * Normally the "loopback" configuration is second (index 1) so
+ * it's not the default.  Here's where to change that order, to
+ * work better with hosts where config changes are problematic.
+ * Or controllers (like superh) that only support one config.
+ */
+static int loopdefault = 0;
+
+module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
+
+/*-------------------------------------------------------------------------*/
+
+/* Thanks to NetChip Technologies for donating this product ID.
+ *
+ * DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
+ * Instead:  allocate your own, using normal USB-IF procedures.
+ */
+#ifndef        CONFIG_USB_ZERO_HNPTEST
+#define DRIVER_VENDOR_NUM      0x0525          /* NetChip */
+#define DRIVER_PRODUCT_NUM     0xa4a0          /* Linux-USB "Gadget Zero" */
+#else
+#define DRIVER_VENDOR_NUM      0x1a0a          /* OTG test device IDs */
+#define DRIVER_PRODUCT_NUM     0xbadd
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * DESCRIPTORS ... most are static, but strings and (full)
+ * configuration descriptors are built on demand.
+ */
+
+/*
+#define STRING_MANUFACTURER            25
+#define STRING_PRODUCT                 42
+#define STRING_SERIAL                  101
+*/
+#define STRING_MANUFACTURER            1
+#define STRING_PRODUCT                 2
+#define STRING_SERIAL                  3
+
+#define STRING_SOURCE_SINK             250
+#define STRING_LOOPBACK                        251
+
+/*
+ * This device advertises two configurations; these numbers work
+ * on a pxa250 as well as more flexible hardware.
+ */
+#define        CONFIG_SOURCE_SINK      3
+#define        CONFIG_LOOPBACK         2
+
+/*
+static struct usb_device_descriptor
+device_desc = {
+       .bLength =              sizeof device_desc,
+       .bDescriptorType =      USB_DT_DEVICE,
+
+       .bcdUSB =               __constant_cpu_to_le16 (0x0200),
+       .bDeviceClass =         USB_CLASS_VENDOR_SPEC,
+
+       .idVendor =             __constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
+       .idProduct =            __constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
+       .iManufacturer =        STRING_MANUFACTURER,
+       .iProduct =             STRING_PRODUCT,
+       .iSerialNumber =        STRING_SERIAL,
+       .bNumConfigurations =   2,
+};
+*/
+static struct usb_device_descriptor
+device_desc = {
+       .bLength =              sizeof device_desc,
+       .bDescriptorType =      USB_DT_DEVICE,
+       .bcdUSB =               __constant_cpu_to_le16 (0x0100),
+       .bDeviceClass =         USB_CLASS_PER_INTERFACE,
+       .bDeviceSubClass =      0,
+       .bDeviceProtocol =      0,
+       .bMaxPacketSize0 =      64,
+       .bcdDevice =            __constant_cpu_to_le16 (0x0100),
+       .idVendor =             __constant_cpu_to_le16 (0x0499),
+       .idProduct =            __constant_cpu_to_le16 (0x3002),
+       .iManufacturer =        STRING_MANUFACTURER,
+       .iProduct =             STRING_PRODUCT,
+       .iSerialNumber =        STRING_SERIAL,
+       .bNumConfigurations =   1,
+};
+
+static struct usb_config_descriptor
+z_config = {
+       .bLength =              sizeof z_config,
+       .bDescriptorType =      USB_DT_CONFIG,
+
+       /* compute wTotalLength on the fly */
+       .bNumInterfaces =       2,
+       .bConfigurationValue =  1,
+       .iConfiguration =       0,
+       .bmAttributes =         0x40,
+       .bMaxPower =            0,      /* self-powered */
+};
+
+
+static struct usb_otg_descriptor
+otg_descriptor = {
+       .bLength =              sizeof otg_descriptor,
+       .bDescriptorType =      USB_DT_OTG,
+
+       .bmAttributes =         USB_OTG_SRP,
+};
+
+/* one interface in each configuration */
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+
+/*
+ * usb 2.0 devices need to expose both high speed and full speed
+ * descriptors, unless they only run at full speed.
+ *
+ * that means alternate endpoint descriptors (bigger packets)
+ * and a "device qualifier" ... plus more construction options
+ * for the config descriptor.
+ */
+
+static struct usb_qualifier_descriptor
+dev_qualifier = {
+       .bLength =              sizeof dev_qualifier,
+       .bDescriptorType =      USB_DT_DEVICE_QUALIFIER,
+
+       .bcdUSB =               __constant_cpu_to_le16 (0x0200),
+       .bDeviceClass =         USB_CLASS_VENDOR_SPEC,
+
+       .bNumConfigurations =   2,
+};
+
+
+struct usb_cs_as_general_descriptor {
+       __u8  bLength;
+       __u8  bDescriptorType;
+
+       __u8  bDescriptorSubType;
+       __u8  bTerminalLink;
+       __u8  bDelay;
+       __u16  wFormatTag;
+} __attribute__ ((packed));
+
+struct usb_cs_as_format_descriptor {
+       __u8  bLength;
+       __u8  bDescriptorType;
+
+       __u8  bDescriptorSubType;
+       __u8  bFormatType;
+       __u8  bNrChannels;
+       __u8  bSubframeSize;
+       __u8  bBitResolution;
+       __u8  bSamfreqType;
+       __u8  tLowerSamFreq[3];
+       __u8  tUpperSamFreq[3];
+} __attribute__ ((packed));
+
+static const struct usb_interface_descriptor
+z_audio_control_if_desc = {
+       .bLength =              sizeof z_audio_control_if_desc,
+       .bDescriptorType =      USB_DT_INTERFACE,
+       .bInterfaceNumber = 0,
+       .bAlternateSetting = 0,
+       .bNumEndpoints = 0,
+       .bInterfaceClass = USB_CLASS_AUDIO,
+       .bInterfaceSubClass = 0x1,
+       .bInterfaceProtocol = 0,
+       .iInterface = 0,
+};
+
+static const struct usb_interface_descriptor
+z_audio_if_desc = {
+       .bLength =              sizeof z_audio_if_desc,
+       .bDescriptorType =      USB_DT_INTERFACE,
+       .bInterfaceNumber = 1,
+       .bAlternateSetting = 0,
+       .bNumEndpoints = 0,
+       .bInterfaceClass = USB_CLASS_AUDIO,
+       .bInterfaceSubClass = 0x2,
+       .bInterfaceProtocol = 0,
+       .iInterface = 0,
+};
+
+static const struct usb_interface_descriptor
+z_audio_if_desc2 = {
+       .bLength =              sizeof z_audio_if_desc,
+       .bDescriptorType =      USB_DT_INTERFACE,
+       .bInterfaceNumber = 1,
+       .bAlternateSetting = 1,
+       .bNumEndpoints = 1,
+       .bInterfaceClass = USB_CLASS_AUDIO,
+       .bInterfaceSubClass = 0x2,
+       .bInterfaceProtocol = 0,
+       .iInterface = 0,
+};
+
+static const struct usb_cs_as_general_descriptor
+z_audio_cs_as_if_desc = {
+       .bLength = 7,
+       .bDescriptorType = 0x24,
+       
+       .bDescriptorSubType = 0x01,
+       .bTerminalLink = 0x01,
+       .bDelay = 0x0,
+       .wFormatTag = __constant_cpu_to_le16 (0x0001)
+};
+
+
+static const struct usb_cs_as_format_descriptor 
+z_audio_cs_as_format_desc = {
+       .bLength = 0xe,
+       .bDescriptorType = 0x24,
+       
+       .bDescriptorSubType = 2,
+       .bFormatType = 1,
+       .bNrChannels = 1,
+       .bSubframeSize = 1,
+       .bBitResolution = 8,
+       .bSamfreqType = 0,
+       .tLowerSamFreq = {0x7e, 0x13, 0x00},
+       .tUpperSamFreq = {0xe2, 0xd6, 0x00},
+};
+
+static const struct usb_endpoint_descriptor 
+z_iso_ep = {
+       .bLength = 0x09,
+       .bDescriptorType = 0x05,
+       .bEndpointAddress = 0x04,
+       .bmAttributes = 0x09,
+       .wMaxPacketSize = 0x0038,
+       .bInterval = 0x01,
+       .bRefresh = 0x00,
+       .bSynchAddress = 0x00,  
+};
+
+static char z_iso_ep2[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+// 9 bytes
+static char z_ac_interface_header_desc[] = 
+{ 0x09, 0x24, 0x01, 0x00, 0x01, 0x2b, 0x00, 0x01, 0x01 };
+
+// 12 bytes
+static char z_0[] = {0x0c, 0x24, 0x02, 0x01, 0x01, 0x01, 0x00, 0x02, 
+                    0x03, 0x00, 0x00, 0x00};
+// 13 bytes
+static char z_1[] = {0x0d, 0x24, 0x06, 0x02, 0x01, 0x02, 0x15, 0x00, 
+                    0x02, 0x00, 0x02, 0x00, 0x00};
+// 9 bytes
+static char z_2[] = {0x09, 0x24, 0x03, 0x03, 0x01, 0x03, 0x00, 0x02, 
+                    0x00};
+
+static char za_0[] = {0x09, 0x04, 0x01, 0x02, 0x01, 0x01, 0x02, 0x00, 
+                     0x00};
+
+static char za_1[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_2[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x01, 0x08, 0x00, 
+                     0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_3[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
+                     0x00};
+
+static char za_4[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_5[] = {0x09, 0x04, 0x01, 0x03, 0x01, 0x01, 0x02, 0x00,
+                     0x00};
+
+static char za_6[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_7[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x02, 0x10, 0x00,
+                     0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_8[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
+                     0x00};
+
+static char za_9[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_10[] = {0x09, 0x04, 0x01, 0x04, 0x01, 0x01, 0x02, 0x00,
+                      0x00};
+
+static char za_11[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_12[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x02, 0x10, 0x00,
+                      0x73, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_13[] = {0x09, 0x05, 0x04, 0x09, 0xe0, 0x00, 0x01, 0x00,
+                      0x00};
+
+static char za_14[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_15[] = {0x09, 0x04, 0x01, 0x05, 0x01, 0x01, 0x02, 0x00, 
+                      0x00};
+
+static char za_16[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_17[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x03, 0x14, 0x00, 
+                      0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_18[] = {0x09, 0x05, 0x04, 0x09, 0xa8, 0x00, 0x01, 0x00,
+                      0x00};
+
+static char za_19[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_20[] = {0x09, 0x04, 0x01, 0x06, 0x01, 0x01, 0x02, 0x00,
+                      0x00};
+
+static char za_21[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_22[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x03, 0x14, 0x00, 
+                      0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_23[] = {0x09, 0x05, 0x04, 0x09, 0x50, 0x01, 0x01, 0x00,
+                      0x00};
+
+static char za_24[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+
+
+static const struct usb_descriptor_header *z_function [] = {
+       (struct usb_descriptor_header *) &z_audio_control_if_desc,
+       (struct usb_descriptor_header *) &z_ac_interface_header_desc,
+       (struct usb_descriptor_header *) &z_0,
+       (struct usb_descriptor_header *) &z_1,
+       (struct usb_descriptor_header *) &z_2,
+       (struct usb_descriptor_header *) &z_audio_if_desc,
+       (struct usb_descriptor_header *) &z_audio_if_desc2,
+       (struct usb_descriptor_header *) &z_audio_cs_as_if_desc,
+       (struct usb_descriptor_header *) &z_audio_cs_as_format_desc,
+       (struct usb_descriptor_header *) &z_iso_ep,
+       (struct usb_descriptor_header *) &z_iso_ep2,
+       (struct usb_descriptor_header *) &za_0,
+       (struct usb_descriptor_header *) &za_1,
+       (struct usb_descriptor_header *) &za_2,
+       (struct usb_descriptor_header *) &za_3,
+       (struct usb_descriptor_header *) &za_4,
+       (struct usb_descriptor_header *) &za_5,
+       (struct usb_descriptor_header *) &za_6,
+       (struct usb_descriptor_header *) &za_7,
+       (struct usb_descriptor_header *) &za_8,
+       (struct usb_descriptor_header *) &za_9,
+       (struct usb_descriptor_header *) &za_10,
+       (struct usb_descriptor_header *) &za_11,
+       (struct usb_descriptor_header *) &za_12,
+       (struct usb_descriptor_header *) &za_13,
+       (struct usb_descriptor_header *) &za_14,
+       (struct usb_descriptor_header *) &za_15,
+       (struct usb_descriptor_header *) &za_16,
+       (struct usb_descriptor_header *) &za_17,
+       (struct usb_descriptor_header *) &za_18,
+       (struct usb_descriptor_header *) &za_19,
+       (struct usb_descriptor_header *) &za_20,
+       (struct usb_descriptor_header *) &za_21,
+       (struct usb_descriptor_header *) &za_22,
+       (struct usb_descriptor_header *) &za_23,
+       (struct usb_descriptor_header *) &za_24,
+       NULL,
+};
+
+/* maxpacket and other transfer characteristics vary by speed. */
+#define ep_desc(g,hs,fs) (((g)->speed==USB_SPEED_HIGH)?(hs):(fs))
+
+#else
+
+/* if there's no high speed support, maxpacket doesn't change. */
+#define ep_desc(g,hs,fs) fs
+
+#endif /* !CONFIG_USB_GADGET_DUALSPEED */
+
+static char                            manufacturer [40];
+//static char                          serial [40];
+static char                            serial [] = "Ser 00 em";
+
+/* static strings, in UTF-8 */
+static struct usb_string               strings [] = {
+       { STRING_MANUFACTURER, manufacturer, },
+       { STRING_PRODUCT, longname, },
+       { STRING_SERIAL, serial, },
+       { STRING_LOOPBACK, loopback, },
+       { STRING_SOURCE_SINK, source_sink, },
+       {  }                    /* end of list */
+};
+
+static struct usb_gadget_strings       stringtab = {
+       .language       = 0x0409,       /* en-us */
+       .strings        = strings,
+};
+
+/*
+ * config descriptors are also handcrafted.  these must agree with code
+ * that sets configurations, and with code managing interfaces and their
+ * altsettings.  other complexity may come from:
+ *
+ *  - high speed support, including "other speed config" rules
+ *  - multiple configurations
+ *  - interfaces with alternate settings
+ *  - embedded class or vendor-specific descriptors
+ *
+ * this handles high speed, and has a second config that could as easily
+ * have been an alternate interface setting (on most hardware).
+ *
+ * NOTE:  to demonstrate (and test) more USB capabilities, this driver
+ * should include an altsetting to test interrupt transfers, including
+ * high bandwidth modes at high speed.  (Maybe work like Intel's test
+ * device?)
+ */
+static int
+config_buf (struct usb_gadget *gadget, u8 *buf, u8 type, unsigned index)
+{
+       int len;
+       const struct usb_descriptor_header **function;
+       
+       function = z_function;
+       len = usb_gadget_config_buf (&z_config, buf, USB_BUFSIZ, function);
+       if (len < 0)
+               return len;
+       ((struct usb_config_descriptor *) buf)->bDescriptorType = type;
+       return len;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_request *
+alloc_ep_req (struct usb_ep *ep, unsigned length)
+{
+       struct usb_request      *req;
+
+       req = usb_ep_alloc_request (ep, GFP_ATOMIC);
+       if (req) {
+               req->length = length;
+               req->buf = usb_ep_alloc_buffer (ep, length,
+                               &req->dma, GFP_ATOMIC);
+               if (!req->buf) {
+                       usb_ep_free_request (ep, req);
+                       req = NULL;
+               }
+       }
+       return req;
+}
+
+static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
+{
+       if (req->buf)
+               usb_ep_free_buffer (ep, req->buf, req->dma, req->length);
+       usb_ep_free_request (ep, req);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* optionally require specific source/sink data patterns  */
+
+static int
+check_read_data (
+       struct zero_dev         *dev,
+       struct usb_ep           *ep,
+       struct usb_request      *req
+)
+{
+       unsigned        i;
+       u8              *buf = req->buf;
+
+       for (i = 0; i < req->actual; i++, buf++) {
+               switch (pattern) {
+               /* all-zeroes has no synchronization issues */
+               case 0:
+                       if (*buf == 0)
+                               continue;
+                       break;
+               /* mod63 stays in sync with short-terminated transfers,
+                * or otherwise when host and gadget agree on how large
+                * each usb transfer request should be.  resync is done
+                * with set_interface or set_config.
+                */
+               case 1:
+                       if (*buf == (u8)(i % 63))
+                               continue;
+                       break;
+               }
+               ERROR (dev, "bad OUT byte, buf [%d] = %d\n", i, *buf);
+               usb_ep_set_halt (ep);
+               return -EINVAL;
+       }
+       return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void zero_reset_config (struct zero_dev *dev)
+{
+       if (dev->config == 0)
+               return;
+
+       DBG (dev, "reset config\n");
+
+       /* just disable endpoints, forcing completion of pending i/o.
+        * all our completion handlers free their requests in this case.
+        */
+       if (dev->in_ep) {
+               usb_ep_disable (dev->in_ep);
+               dev->in_ep = NULL;
+       }
+       if (dev->out_ep) {
+               usb_ep_disable (dev->out_ep);
+               dev->out_ep = NULL;
+       }
+       dev->config = 0;
+       del_timer (&dev->resume);
+}
+
+#define _write(f, buf, sz) (f->f_op->write(f, buf, sz, &f->f_pos))
+
+static void 
+zero_isoc_complete (struct usb_ep *ep, struct usb_request *req)
+{
+       struct zero_dev *dev = ep->driver_data;
+       int             status = req->status;
+       int i, j;
+
+       switch (status) {
+
+       case 0:                         /* normal completion? */
+               //printk ("\nzero ---------------> isoc normal completion %d bytes\n", req->actual);
+               for (i=0, j=rbuf_start; i<req->actual; i++) {
+                       //printk ("%02x ", ((__u8*)req->buf)[i]);
+                       rbuf[j] = ((__u8*)req->buf)[i];
+                       j++;
+                       if (j >= RBUF_LEN) j=0;
+               }
+               rbuf_start = j;
+               //printk ("\n\n");
+
+               if (rbuf_len < RBUF_LEN) {
+                       rbuf_len += req->actual;
+                       if (rbuf_len > RBUF_LEN) {
+                               rbuf_len = RBUF_LEN;
+                       }
+               }
+
+               break;
+
+       /* this endpoint is normally active while we're configured */
+       case -ECONNABORTED:             /* hardware forced ep reset */
+       case -ECONNRESET:               /* request dequeued */
+       case -ESHUTDOWN:                /* disconnect from host */
+               VDBG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
+                               req->actual, req->length);
+               if (ep == dev->out_ep)
+                       check_read_data (dev, ep, req);
+               free_ep_req (ep, req);
+               return;
+
+       case -EOVERFLOW:                /* buffer overrun on read means that
+                                        * we didn't provide a big enough
+                                        * buffer.
+                                        */
+       default:
+#if 1
+               DBG (dev, "%s complete --> %d, %d/%d\n", ep->name,
+                               status, req->actual, req->length);
+#endif
+       case -EREMOTEIO:                /* short read */
+               break;
+       }
+
+       status = usb_ep_queue (ep, req, GFP_ATOMIC);
+       if (status) {
+               ERROR (dev, "kill %s:  resubmit %d bytes --> %d\n",
+                               ep->name, req->length, status);
+               usb_ep_set_halt (ep);
+               /* FIXME recover later ... somehow */
+       }
+}
+
+static struct usb_request *
+zero_start_isoc_ep (struct usb_ep *ep, int gfp_flags)
+{
+       struct usb_request      *req;
+       int                     status;
+
+       req = alloc_ep_req (ep, 512);
+       if (!req)
+               return NULL;
+
+       req->complete = zero_isoc_complete;
+
+       status = usb_ep_queue (ep, req, gfp_flags);
+       if (status) {
+               struct zero_dev *dev = ep->driver_data;
+
+               ERROR (dev, "start %s --> %d\n", ep->name, status);
+               free_ep_req (ep, req);
+               req = NULL;
+       }
+
+       return req;
+}
+
+/* change our operational config.  this code must agree with the code
+ * that returns config descriptors, and altsetting code.
+ *
+ * it's also responsible for power management interactions. some
+ * configurations might not work with our current power sources.
+ *
+ * note that some device controller hardware will constrain what this
+ * code can do, perhaps by disallowing more than one configuration or
+ * by limiting configuration choices (like the pxa2xx).
+ */
+static int
+zero_set_config (struct zero_dev *dev, unsigned number, int gfp_flags)
+{
+       int                     result = 0;
+       struct usb_gadget       *gadget = dev->gadget;
+       const struct usb_endpoint_descriptor    *d;
+       struct usb_ep           *ep;
+
+       if (number == dev->config)
+               return 0;
+
+       zero_reset_config (dev);
+
+       gadget_for_each_ep (ep, gadget) {
+
+               if (strcmp (ep->name, "ep4") == 0) {
+
+                       d = (struct usb_endpoint_descripter *)&za_23; // isoc ep desc for audio i/f alt setting 6
+                       result = usb_ep_enable (ep, d);
+
+                       if (result == 0) {
+                               ep->driver_data = dev;
+                               dev->in_ep = ep;
+
+                               if (zero_start_isoc_ep (ep, gfp_flags) != 0) {
+
+                                       dev->in_ep = ep;
+                                       continue;
+                               }
+
+                               usb_ep_disable (ep);
+                               result = -EIO;
+                       }
+               }
+
+       }
+
+       dev->config = number;
+       return result;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
+{
+       if (req->status || req->actual != req->length)
+               DBG ((struct zero_dev *) ep->driver_data,
+                               "setup complete --> %d, %d/%d\n",
+                               req->status, req->actual, req->length);
+}
+
+/*
+ * The setup() callback implements all the ep0 functionality that's
+ * not handled lower down, in hardware or the hardware driver (like
+ * device and endpoint feature flags, and their status).  It's all
+ * housekeeping for the gadget function we're implementing.  Most of
+ * the work is in config-specific setup.
+ */
+static int
+zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+{
+       struct zero_dev         *dev = get_gadget_data (gadget);
+       struct usb_request      *req = dev->req;
+       int                     value = -EOPNOTSUPP;
+
+       /* usually this stores reply data in the pre-allocated ep0 buffer,
+        * but config change events will reconfigure hardware.
+        */
+       req->zero = 0;
+       switch (ctrl->bRequest) {
+
+       case USB_REQ_GET_DESCRIPTOR:
+
+               switch (ctrl->wValue >> 8) {
+
+               case USB_DT_DEVICE:
+                       value = min (ctrl->wLength, (u16) sizeof device_desc);
+                       memcpy (req->buf, &device_desc, value);
+                       break;
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+               case USB_DT_DEVICE_QUALIFIER:
+                       if (!gadget->is_dualspeed)
+                               break;
+                       value = min (ctrl->wLength, (u16) sizeof dev_qualifier);
+                       memcpy (req->buf, &dev_qualifier, value);
+                       break;
+
+               case USB_DT_OTHER_SPEED_CONFIG:
+                       if (!gadget->is_dualspeed)
+                               break;
+                       // FALLTHROUGH
+#endif /* CONFIG_USB_GADGET_DUALSPEED */
+               case USB_DT_CONFIG:
+                       value = config_buf (gadget, req->buf,
+                                       ctrl->wValue >> 8,
+                                       ctrl->wValue & 0xff);
+                       if (value >= 0)
+                               value = min (ctrl->wLength, (u16) value);
+                       break;
+
+               case USB_DT_STRING:
+                       /* wIndex == language code.
+                        * this driver only handles one language, you can
+                        * add string tables for other languages, using
+                        * any UTF-8 characters
+                        */
+                       value = usb_gadget_get_string (&stringtab,
+                                       ctrl->wValue & 0xff, req->buf);
+                       if (value >= 0) {
+                               value = min (ctrl->wLength, (u16) value);
+                       }
+                       break;
+               }
+               break;
+
+       /* currently two configs, two speeds */
+       case USB_REQ_SET_CONFIGURATION:
+               if (ctrl->bRequestType != 0)
+                       goto unknown;
+
+               spin_lock (&dev->lock);
+               value = zero_set_config (dev, ctrl->wValue, GFP_ATOMIC);
+               spin_unlock (&dev->lock);
+               break;
+       case USB_REQ_GET_CONFIGURATION:
+               if (ctrl->bRequestType != USB_DIR_IN)
+                       goto unknown;
+               *(u8 *)req->buf = dev->config;
+               value = min (ctrl->wLength, (u16) 1);
+               break;
+
+       /* until we add altsetting support, or other interfaces,
+        * only 0/0 are possible.  pxa2xx only supports 0/0 (poorly)
+        * and already killed pending endpoint I/O.
+        */
+       case USB_REQ_SET_INTERFACE:
+
+               if (ctrl->bRequestType != USB_RECIP_INTERFACE)
+                       goto unknown;
+               spin_lock (&dev->lock);
+               if (dev->config) {
+                       u8              config = dev->config;
+
+                       /* resets interface configuration, forgets about
+                        * previous transaction state (queued bufs, etc)
+                        * and re-inits endpoint state (toggle etc)
+                        * no response queued, just zero status == success.
+                        * if we had more than one interface we couldn't
+                        * use this "reset the config" shortcut.
+                        */
+                       zero_reset_config (dev);
+                       zero_set_config (dev, config, GFP_ATOMIC);
+                       value = 0;
+               }
+               spin_unlock (&dev->lock);
+               break;
+       case USB_REQ_GET_INTERFACE:
+               if ((ctrl->bRequestType == 0x21) && (ctrl->wIndex == 0x02)) {
+                       value = ctrl->wLength;
+                       break;
+               }
+               else {
+                       if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
+                               goto unknown;
+                       if (!dev->config)
+                               break;
+                       if (ctrl->wIndex != 0) {
+                               value = -EDOM;
+                               break;
+                       }
+                       *(u8 *)req->buf = 0;
+                       value = min (ctrl->wLength, (u16) 1);
+               }
+               break;
+
+       /*
+        * These are the same vendor-specific requests supported by
+        * Intel's USB 2.0 compliance test devices.  We exceed that
+        * device spec by allowing multiple-packet requests.
+        */
+       case 0x5b:      /* control WRITE test -- fill the buffer */
+               if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR))
+                       goto unknown;
+               if (ctrl->wValue || ctrl->wIndex)
+                       break;
+               /* just read that many bytes into the buffer */
+               if (ctrl->wLength > USB_BUFSIZ)
+                       break;
+               value = ctrl->wLength;
+               break;
+       case 0x5c:      /* control READ test -- return the buffer */
+               if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR))
+                       goto unknown;
+               if (ctrl->wValue || ctrl->wIndex)
+                       break;
+               /* expect those bytes are still in the buffer; send back */
+               if (ctrl->wLength > USB_BUFSIZ
+                               || ctrl->wLength != req->length)
+                       break;
+               value = ctrl->wLength;
+               break;
+
+       case 0x01: // SET_CUR
+       case 0x02:
+       case 0x03:
+       case 0x04:
+       case 0x05:
+               value = ctrl->wLength;
+               break;
+       case 0x81:
+               switch (ctrl->wValue) {
+               case 0x0201:
+               case 0x0202:
+                       ((u8*)req->buf)[0] = 0x00;
+                       ((u8*)req->buf)[1] = 0xe3;
+                       break;
+               case 0x0300:
+               case 0x0500:
+                       ((u8*)req->buf)[0] = 0x00;
+                       break;
+               }
+               //((u8*)req->buf)[0] = 0x81;
+               //((u8*)req->buf)[1] = 0x81;
+               value = ctrl->wLength;
+               break;
+       case 0x82:
+               switch (ctrl->wValue) {
+               case 0x0201:
+               case 0x0202:
+                       ((u8*)req->buf)[0] = 0x00;
+                       ((u8*)req->buf)[1] = 0xc3;
+                       break;
+               case 0x0300:
+               case 0x0500:
+                       ((u8*)req->buf)[0] = 0x00;
+                       break;
+               }
+               //((u8*)req->buf)[0] = 0x82;
+               //((u8*)req->buf)[1] = 0x82;
+               value = ctrl->wLength;
+               break;
+       case 0x83:
+               switch (ctrl->wValue) {
+               case 0x0201:
+               case 0x0202:
+                       ((u8*)req->buf)[0] = 0x00;
+                       ((u8*)req->buf)[1] = 0x00;
+                       break;
+               case 0x0300:
+                       ((u8*)req->buf)[0] = 0x60;
+                       break;
+               case 0x0500:    
+                       ((u8*)req->buf)[0] = 0x18;
+                       break;
+               }
+               //((u8*)req->buf)[0] = 0x83;
+               //((u8*)req->buf)[1] = 0x83;
+               value = ctrl->wLength;
+               break;
+       case 0x84:
+               switch (ctrl->wValue) {
+               case 0x0201:
+               case 0x0202:
+                       ((u8*)req->buf)[0] = 0x00;
+                       ((u8*)req->buf)[1] = 0x01;
+                       break;
+               case 0x0300:
+               case 0x0500:
+                       ((u8*)req->buf)[0] = 0x08;
+                       break;
+               }
+               //((u8*)req->buf)[0] = 0x84;
+               //((u8*)req->buf)[1] = 0x84;
+               value = ctrl->wLength;
+               break;
+       case 0x85:
+               ((u8*)req->buf)[0] = 0x85;
+               ((u8*)req->buf)[1] = 0x85;
+               value = ctrl->wLength;
+               break;
+
+       
+       default:
+unknown:
+               printk("unknown control req%02x.%02x v%04x i%04x l%d\n",
+                       ctrl->bRequestType, ctrl->bRequest,
+                       ctrl->wValue, ctrl->wIndex, ctrl->wLength);
+       }
+
+       /* respond with data transfer before status phase? */
+       if (value >= 0) {
+               req->length = value;
+               req->zero = value < ctrl->wLength
+                               && (value % gadget->ep0->maxpacket) == 0;
+               value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
+               if (value < 0) {
+                       DBG (dev, "ep_queue < 0 --> %d\n", value);
+                       req->status = 0;
+                       zero_setup_complete (gadget->ep0, req);
+               }
+       }
+
+       /* device either stalls (value < 0) or reports success */
+       return value;
+}
+
+static void
+zero_disconnect (struct usb_gadget *gadget)
+{
+       struct zero_dev         *dev = get_gadget_data (gadget);
+       unsigned long           flags;
+
+       spin_lock_irqsave (&dev->lock, flags);
+       zero_reset_config (dev);
+
+       /* a more significant application might have some non-usb
+        * activities to quiesce here, saving resources like power
+        * or pushing the notification up a network stack.
+        */
+       spin_unlock_irqrestore (&dev->lock, flags);
+
+       /* next we may get setup() calls to enumerate new connections;
+        * or an unbind() during shutdown (including removing module).
+        */
+}
+
+static void
+zero_autoresume (unsigned long _dev)
+{
+       struct zero_dev *dev = (struct zero_dev *) _dev;
+       int             status;
+
+       /* normally the host would be woken up for something
+        * more significant than just a timer firing...
+        */
+       if (dev->gadget->speed != USB_SPEED_UNKNOWN) {
+               status = usb_gadget_wakeup (dev->gadget);
+               DBG (dev, "wakeup --> %d\n", status);
+       }
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void
+zero_unbind (struct usb_gadget *gadget)
+{
+       struct zero_dev         *dev = get_gadget_data (gadget);
+
+       DBG (dev, "unbind\n");
+
+       /* we've already been disconnected ... no i/o is active */
+       if (dev->req)
+               free_ep_req (gadget->ep0, dev->req);
+       del_timer_sync (&dev->resume);
+       kfree (dev);
+       set_gadget_data (gadget, NULL);
+}
+
+static int
+zero_bind (struct usb_gadget *gadget)
+{
+       struct zero_dev         *dev;
+       //struct usb_ep         *ep;
+
+       printk("binding\n");
+       /*
+        * DRIVER POLICY CHOICE:  you may want to do this differently.
+        * One thing to avoid is reusing a bcdDevice revision code
+        * with different host-visible configurations or behavior
+        * restrictions -- using ep1in/ep2out vs ep1out/ep3in, etc
+        */
+       //device_desc.bcdDevice = __constant_cpu_to_le16 (0x0201);
+
+
+       /* ok, we made sense of the hardware ... */
+       dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+       if (!dev)
+               return -ENOMEM;
+       memset (dev, 0, sizeof *dev);
+       spin_lock_init (&dev->lock);
+       dev->gadget = gadget;
+       set_gadget_data (gadget, dev);
+
+       /* preallocate control response and buffer */
+       dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
+       if (!dev->req)
+               goto enomem;
+       dev->req->buf = usb_ep_alloc_buffer (gadget->ep0, USB_BUFSIZ,
+                               &dev->req->dma, GFP_KERNEL);
+       if (!dev->req->buf)
+               goto enomem;
+
+       dev->req->complete = zero_setup_complete;
+
+       device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
+
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+       /* assume ep0 uses the same value for both speeds ... */
+       dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
+
+       /* and that all endpoints are dual-speed */
+       //hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress;
+       //hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress;
+#endif
+
+       usb_gadget_set_selfpowered (gadget);
+
+       init_timer (&dev->resume);
+       dev->resume.function = zero_autoresume;
+       dev->resume.data = (unsigned long) dev;
+
+       gadget->ep0->driver_data = dev;
+
+       INFO (dev, "%s, version: " DRIVER_VERSION "\n", longname);
+       INFO (dev, "using %s, OUT %s IN %s\n", gadget->name,
+               EP_OUT_NAME, EP_IN_NAME);
+
+       snprintf (manufacturer, sizeof manufacturer,
+               UTS_SYSNAME " " UTS_RELEASE " with %s",
+               gadget->name);
+
+       return 0;
+
+enomem:
+       zero_unbind (gadget);
+       return -ENOMEM;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void
+zero_suspend (struct usb_gadget *gadget)
+{
+       struct zero_dev         *dev = get_gadget_data (gadget);
+
+       if (gadget->speed == USB_SPEED_UNKNOWN)
+               return;
+
+       if (autoresume) {
+               mod_timer (&dev->resume, jiffies + (HZ * autoresume));
+               DBG (dev, "suspend, wakeup in %d seconds\n", autoresume);
+       } else
+               DBG (dev, "suspend\n");
+}
+
+static void
+zero_resume (struct usb_gadget *gadget)
+{
+       struct zero_dev         *dev = get_gadget_data (gadget);
+
+       DBG (dev, "resume\n");
+       del_timer (&dev->resume);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_gadget_driver zero_driver = {
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+       .speed          = USB_SPEED_HIGH,
+#else
+       .speed          = USB_SPEED_FULL,
+#endif
+       .function       = (char *) longname,
+       .bind           = zero_bind,
+       .unbind         = zero_unbind,
+
+       .setup          = zero_setup,
+       .disconnect     = zero_disconnect,
+
+       .suspend        = zero_suspend,
+       .resume         = zero_resume,
+
+       .driver         = {
+               .name           = (char *) shortname,
+               // .shutdown = ...
+               // .suspend = ...
+               // .resume = ...
+       },
+};
+
+MODULE_AUTHOR ("David Brownell");
+MODULE_LICENSE ("Dual BSD/GPL");
+
+static struct proc_dir_entry *pdir, *pfile;
+
+static int isoc_read_data (char *page, char **start,
+                          off_t off, int count,
+                          int *eof, void *data)
+{
+       int i;
+       static int c = 0;
+       static int done = 0;
+       static int s = 0;
+
+/*
+       printk ("\ncount: %d\n", count);
+       printk ("rbuf_start: %d\n", rbuf_start);
+       printk ("rbuf_len: %d\n", rbuf_len);
+       printk ("off: %d\n", off);
+       printk ("start: %p\n\n", *start);
+*/
+       if (done) {
+               c = 0;
+               done = 0;
+               *eof = 1;
+               return 0;
+       }
+
+       if (c == 0) {
+               if (rbuf_len == RBUF_LEN)
+                       s = rbuf_start;
+               else s = 0;
+       }
+
+       for (i=0; i<count && c<rbuf_len; i++, c++) {
+               page[i] = rbuf[(c+s) % RBUF_LEN];
+       }
+       *start = page;
+       
+       if (c >= rbuf_len) {
+               *eof = 1;
+               done = 1;
+       }
+
+
+       return i;
+}
+
+static int __init init (void)
+{
+
+       int retval = 0;
+
+       pdir = proc_mkdir("isoc_test", NULL);
+       if(pdir == NULL) {
+               retval = -ENOMEM;
+               printk("Error creating dir\n");
+               goto done;
+       }
+       pdir->owner = THIS_MODULE;
+
+       pfile = create_proc_read_entry("isoc_data",
+                                      0444, pdir,
+                                      isoc_read_data,
+                                      NULL);
+       if (pfile == NULL) {
+               retval = -ENOMEM;
+               printk("Error creating file\n");
+               goto no_file;
+       }
+       pfile->owner = THIS_MODULE;
+
+       return usb_gadget_register_driver (&zero_driver);
+
+ no_file:
+       remove_proc_entry("isoc_data", NULL);
+ done:
+       return retval;
+}
+module_init (init);
+
+static void __exit cleanup (void)
+{
+
+       usb_gadget_unregister_driver (&zero_driver);
+       
+       remove_proc_entry("isoc_data", pdir);
+       remove_proc_entry("isoc_test", NULL);
+}
+module_exit (cleanup);
diff --git a/drivers/usb/host/dwc_otg/dwc_cfi_common.h b/drivers/usb/host/dwc_otg/dwc_cfi_common.h
new file mode 100644
index 0000000..be56af4
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_cfi_common.h
@@ -0,0 +1,142 @@
+/* ==========================================================================
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_CFI_COMMON_H__)
+#define __DWC_CFI_COMMON_H__
+
+//#include <linux/types.h>
+
+/**
+ * @file 
+ *
+ * This file contains the CFI specific common constants, interfaces
+ * (functions and macros) and structures for Linux. No PCD specific
+ * data structure or definition is to be included in this file.
+ *
+ */
+
+/** This is a request for all Core Features */
+#define VEN_CORE_GET_FEATURES          0xB1
+
+/** This is a request to get the value of a specific Core Feature */
+#define VEN_CORE_GET_FEATURE           0xB2
+
+/** This command allows the host to set the value of a specific Core Feature */
+#define VEN_CORE_SET_FEATURE           0xB3
+
+/** This command allows the host to set the default values of 
+ * either all or any specific Core Feature 
+ */
+#define VEN_CORE_RESET_FEATURES                0xB4
+
+/** This command forces the PCD to write the deferred values of a Core Features */
+#define VEN_CORE_ACTIVATE_FEATURES     0xB5
+
+/** This request reads a DWORD value from a register at the specified offset */
+#define VEN_CORE_READ_REGISTER         0xB6
+
+/** This request writes a DWORD value into a register at the specified offset */
+#define VEN_CORE_WRITE_REGISTER                0xB7
+
+/** This structure is the header of the Core Features dataset returned to 
+ *  the Host
+ */
+struct cfi_all_features_header {
+/** The features header structure length is */
+#define CFI_ALL_FEATURES_HDR_LEN               8
+       /**
+        * The total length of the features dataset returned to the Host 
+        */
+       uint16_t wTotalLen;
+
+       /**
+        * CFI version number inBinary-Coded Decimal (i.e., 1.00 is 100H).
+        * This field identifies the version of the CFI Specification with which 
+        * the device is compliant.
+        */
+       uint16_t wVersion;
+
+       /** The ID of the Core */
+       uint16_t wCoreID;
+#define CFI_CORE_ID_UDC                1
+#define CFI_CORE_ID_OTG                2
+#define CFI_CORE_ID_WUDEV      3
+
+       /** Number of features returned by VEN_CORE_GET_FEATURES request */
+       uint16_t wNumFeatures;
+} UPACKED;
+
+typedef struct cfi_all_features_header cfi_all_features_header_t;
+
+/** This structure is a header of the Core Feature descriptor dataset returned to 
+ *  the Host after the VEN_CORE_GET_FEATURES request
+ */
+struct cfi_feature_desc_header {
+#define CFI_FEATURE_DESC_HDR_LEN       8
+
+       /** The feature ID */
+       uint16_t wFeatureID;
+
+       /** Length of this feature descriptor in bytes - including the
+        * length of the feature name string
+        */
+       uint16_t wLength;
+
+       /** The data length of this feature in bytes */
+       uint16_t wDataLength;
+
+       /** 
+        * Attributes of this features 
+        * D0: Access rights
+        * 0 - Read/Write
+        * 1 - Read only
+        */
+       uint8_t bmAttributes;
+#define CFI_FEATURE_ATTR_RO            1
+#define CFI_FEATURE_ATTR_RW            0
+
+       /** Length of the feature name in bytes */
+       uint8_t bNameLen;
+
+       /** The feature name buffer */
+       //uint8_t *name;
+} UPACKED;
+
+typedef struct cfi_feature_desc_header cfi_feature_desc_header_t;
+
+/**
+ * This structure describes a NULL terminated string referenced by its id field.
+ * It is very similar to usb_string structure but has the id field type set to 16-bit.
+ */
+struct cfi_string {
+       uint16_t id;
+       const uint8_t *s;
+};
+typedef struct cfi_string cfi_string_t;
+
+#endif
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_adp.c b/drivers/usb/host/dwc_otg/dwc_otg_adp.c
new file mode 100644
index 0000000..0877472
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_adp.c
@@ -0,0 +1,854 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_adp.c $
+ * $Revision: #12 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#include "dwc_os.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_adp.h"
+
+/** @file
+ *
+ * This file contains the most of the Attach Detect Protocol implementation for
+ * the driver to support OTG Rev2.0.
+ *
+ */
+
+void dwc_otg_adp_write_reg(dwc_otg_core_if_t * core_if, uint32_t value)
+{
+       adpctl_data_t adpctl;
+
+       adpctl.d32 = value;
+       adpctl.b.ar = 0x2;
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->adpctl, adpctl.d32);
+
+       while (adpctl.b.ar) {
+               adpctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->adpctl);
+       }
+
+}
+
+/**
+ * Function is called to read ADP registers
+ */
+uint32_t dwc_otg_adp_read_reg(dwc_otg_core_if_t * core_if)
+{
+       adpctl_data_t adpctl;
+
+       adpctl.d32 = 0;
+       adpctl.b.ar = 0x1;
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->adpctl, adpctl.d32);
+
+       while (adpctl.b.ar) {
+               adpctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->adpctl);
+       }
+
+       return adpctl.d32;
+}
+
+/**
+ * Function is called to read ADPCTL register and filter Write-clear bits
+ */
+uint32_t dwc_otg_adp_read_reg_filter(dwc_otg_core_if_t * core_if)
+{
+       adpctl_data_t adpctl;
+
+       adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       adpctl.b.adp_tmout_int = 0;
+       adpctl.b.adp_prb_int = 0;
+       adpctl.b.adp_tmout_int = 0;
+               
+       return adpctl.d32;
+}
+
+/**
+ * Function is called to write ADP registers
+ */
+void dwc_otg_adp_modify_reg(dwc_otg_core_if_t * core_if, uint32_t clr,
+                           uint32_t set)
+{
+       dwc_otg_adp_write_reg(core_if,
+                             (dwc_otg_adp_read_reg(core_if) & (~clr)) | set);
+}
+
+static void adp_sense_timeout(void *ptr)
+{
+       dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+       core_if->adp.sense_timer_started = 0;
+       DWC_PRINTF("ADP SENSE TIMEOUT\n");
+       if (core_if->adp_enable) {
+               dwc_otg_adp_sense_stop(core_if);
+               dwc_otg_adp_probe_start(core_if);
+       }
+}
+
+/**
+ * This function is called when the ADP vbus timer expires. Timeout is 1.1s.
+ */
+static void adp_vbuson_timeout(void *ptr)
+{
+       gpwrdn_data_t gpwrdn;
+       dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+       hprt0_data_t hprt0 = {.d32 = 0 };
+       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+       DWC_PRINTF("%s: 1.1 seconds expire after turning on VBUS\n",__FUNCTION__);
+       if (core_if) {
+               core_if->adp.vbuson_timer_started = 0;
+               /* Turn off vbus */
+               hprt0.b.prtpwr = 1;
+               DWC_MODIFY_REG32(core_if->host_if->hprt0, hprt0.d32, 0);
+               gpwrdn.d32 = 0;
+
+               /* Power off the core */
+               if (core_if->power_down == 2) {
+                       /* Enable Wakeup Logic */
+//                      gpwrdn.b.wkupactiv = 1;
+                       gpwrdn.b.pmuactv = 0;
+                       gpwrdn.b.pwrdnrstn = 1;
+                       gpwrdn.b.pwrdnclmp = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+                                        gpwrdn.d32);
+
+                       /* Suspend the Phy Clock */
+                       pcgcctl.b.stoppclk = 1;
+                       DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+                       /* Switch on VDD */
+//                      gpwrdn.b.wkupactiv = 1;
+                       gpwrdn.b.pmuactv = 1;
+                       gpwrdn.b.pwrdnrstn = 1;
+                       gpwrdn.b.pwrdnclmp = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+                                        gpwrdn.d32);
+               } else {
+                       /* Enable Power Down Logic */
+                       gpwrdn.b.pmuintsel = 1;
+                       gpwrdn.b.pmuactv = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+               }
+
+               /* Power off the core */
+               if (core_if->power_down == 2) {
+                       gpwrdn.d32 = 0;
+                       gpwrdn.b.pwrdnswtch = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn,
+                                        gpwrdn.d32, 0);
+               }
+
+               /* Unmask SRP detected interrupt from Power Down Logic */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.srp_det_msk = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+
+               dwc_otg_adp_probe_start(core_if);
+               dwc_otg_dump_global_registers(core_if);
+               dwc_otg_dump_host_registers(core_if);
+       }
+
+}
+
+/**
+ * Start the ADP Initial Probe timer to detect if Port Connected interrupt is 
+ * not asserted within 1.1 seconds.
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+void dwc_otg_adp_vbuson_timer_start(dwc_otg_core_if_t * core_if)
+{
+       core_if->adp.vbuson_timer_started = 1;
+       if (core_if->adp.vbuson_timer)
+       {
+               DWC_PRINTF("SCHEDULING VBUSON TIMER\n");
+               /* 1.1 secs + 60ms necessary for cil_hcd_start*/
+               DWC_TIMER_SCHEDULE(core_if->adp.vbuson_timer, 1160);
+       } else {
+               DWC_WARN("VBUSON_TIMER = %p\n",core_if->adp.vbuson_timer);
+       }
+}
+
+#if 0
+/**
+ * Masks all DWC OTG core interrupts
+ *
+ */
+static void mask_all_interrupts(dwc_otg_core_if_t * core_if)
+{
+       int i;
+       gahbcfg_data_t ahbcfg = {.d32 = 0 };
+
+       /* Mask Host Interrupts */
+
+       /* Clear and disable HCINTs */
+       for (i = 0; i < core_if->core_params->host_channels; i++) {
+               DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcintmsk, 0);
+               DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcint, 0xFFFFFFFF);
+
+       }
+
+       /* Clear and disable HAINT */
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haintmsk, 0x0000);
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haint, 0xFFFFFFFF);
+
+       /* Mask Device Interrupts */
+       if (!core_if->multiproc_int_enable) {
+               /* Clear and disable IN Endpoint interrupts */
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->diepmsk, 0);
+               for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->
+                                       diepint, 0xFFFFFFFF);
+               }
+
+               /* Clear and disable OUT Endpoint interrupts */
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->doepmsk, 0);
+               for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->
+                                       doepint, 0xFFFFFFFF);
+               }
+
+               /* Clear and disable DAINT */
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daint,
+                               0xFFFFFFFF);
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daintmsk, 0);
+       } else {
+               for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+                       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+                                       diepeachintmsk[i], 0);
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->
+                                       diepint, 0xFFFFFFFF);
+               }
+
+               for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+                       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+                                       doepeachintmsk[i], 0);
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->
+                                       doepint, 0xFFFFFFFF);
+               }
+
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->deachintmsk,
+                               0);
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->deachint,
+                               0xFFFFFFFF);
+
+       }
+
+       /* Disable interrupts */
+       ahbcfg.b.glblintrmsk = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+
+       /* Disable all interrupts. */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0);
+
+       /* Clear any pending interrupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+       /* Clear any pending OTG Interrupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, 0xFFFFFFFF);
+}
+
+/**
+ * Unmask Port Connection Detected interrupt
+ *
+ */
+static void unmask_conn_det_intr(dwc_otg_core_if_t * core_if)
+{
+       gintmsk_data_t gintmsk = {.d32 = 0,.b.portintr = 1 };
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32);
+}
+#endif
+
+/**
+ * Starts the ADP Probing
+ *
+ * @param core_if the pointer to core_if structure.
+ */
+uint32_t dwc_otg_adp_probe_start(dwc_otg_core_if_t * core_if)
+{
+
+       adpctl_data_t adpctl = {.d32 = 0};
+       gpwrdn_data_t gpwrdn;
+#if 0
+       adpctl_data_t adpctl_int = {.d32 = 0, .b.adp_prb_int = 1,
+                                                               .b.adp_sns_int = 1, b.adp_tmout_int};
+#endif
+       dwc_otg_disable_global_interrupts(core_if);
+       DWC_PRINTF("ADP Probe Start\n");
+       core_if->adp.probe_enabled = 1;
+
+       adpctl.b.adpres = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       while (adpctl.b.adpres) {
+               adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       }
+
+       adpctl.d32 = 0;
+       gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+       /* In Host mode unmask SRP detected interrupt */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.sts_chngint_msk = 1;
+       if (!gpwrdn.b.idsts) {
+               gpwrdn.b.srp_det_msk = 1;
+       }
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+
+       adpctl.b.adp_tmout_int_msk = 1;
+       adpctl.b.adp_prb_int_msk = 1;
+       adpctl.b.prb_dschg = 1;
+       adpctl.b.prb_delta = 1;
+       adpctl.b.prb_per = 1;
+       adpctl.b.adpen = 1;
+       adpctl.b.enaprb = 1;
+
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+       DWC_PRINTF("ADP Probe Finish\n");
+       return 0;
+}
+
+/**
+ * Starts the ADP Sense timer to detect if ADP Sense interrupt is not asserted 
+ * within 3 seconds.
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+void dwc_otg_adp_sense_timer_start(dwc_otg_core_if_t * core_if)
+{
+       core_if->adp.sense_timer_started = 1;
+       DWC_TIMER_SCHEDULE(core_if->adp.sense_timer, 3000 /* 3 secs */ );
+}
+
+/**
+ * Starts the ADP Sense
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+uint32_t dwc_otg_adp_sense_start(dwc_otg_core_if_t * core_if)
+{
+       adpctl_data_t adpctl;
+
+       DWC_PRINTF("ADP Sense Start\n");
+
+       /* Unmask ADP sense interrupt and mask all other from the core */
+       adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
+       adpctl.b.adp_sns_int_msk = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+       dwc_otg_disable_global_interrupts(core_if); // vahrama 
+
+       /* Set ADP reset bit*/
+       adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
+       adpctl.b.adpres = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       while (adpctl.b.adpres) {
+               adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       }
+
+       adpctl.b.adpres = 0;
+       adpctl.b.adpen = 1;
+       adpctl.b.enasns = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       dwc_otg_adp_sense_timer_start(core_if);
+
+       return 0;
+}
+
+/**
+ * Stops the ADP Probing
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+uint32_t dwc_otg_adp_probe_stop(dwc_otg_core_if_t * core_if)
+{
+
+       adpctl_data_t adpctl;
+       DWC_PRINTF("Stop ADP probe\n");
+       core_if->adp.probe_enabled = 0;
+       core_if->adp.probe_counter = 0;
+       adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+
+       adpctl.b.adpen = 0;
+       adpctl.b.adp_prb_int = 1;
+       adpctl.b.adp_tmout_int = 1;
+       adpctl.b.adp_sns_int = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       return 0;
+}
+
+/**
+ * Stops the ADP Sensing
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+uint32_t dwc_otg_adp_sense_stop(dwc_otg_core_if_t * core_if)
+{
+       adpctl_data_t adpctl;
+
+       core_if->adp.sense_enabled = 0;
+
+       adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
+       adpctl.b.enasns = 0;
+       adpctl.b.adp_sns_int = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       return 0;
+}
+
+/**
+ * Called to turn on the VBUS after initial ADP probe in host mode.
+ * If port power was already enabled in cil_hcd_start function then
+ * only schedule a timer.
+ *
+ * @param core_if the pointer to core_if structure.
+ */
+void dwc_otg_adp_turnon_vbus(dwc_otg_core_if_t * core_if)
+{
+       hprt0_data_t hprt0 = {.d32 = 0 };
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       DWC_PRINTF("Turn on VBUS for 1.1s, port power is %d\n", hprt0.b.prtpwr);
+
+       if (hprt0.b.prtpwr == 0) {
+               hprt0.b.prtpwr = 1;
+               //DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+       }
+       
+       dwc_otg_adp_vbuson_timer_start(core_if);
+}
+
+/**
+ * Called right after driver is loaded
+ * to perform initial actions for ADP
+ *
+ * @param core_if the pointer to core_if structure.
+ * @param is_host - flag for current mode of operation either from GINTSTS or GPWRDN
+ */
+void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host)
+{
+       gpwrdn_data_t gpwrdn;
+
+       DWC_PRINTF("ADP Initial Start\n");
+       core_if->adp.adp_started = 1;
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+       dwc_otg_disable_global_interrupts(core_if);
+       if (is_host) {
+               DWC_PRINTF("HOST MODE\n");
+               /* Enable Power Down Logic Interrupt*/
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pmuintsel = 1;
+               gpwrdn.b.pmuactv = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+               /* Initialize first ADP probe to obtain Ramp Time value */
+               core_if->adp.initial_probe = 1;
+               dwc_otg_adp_probe_start(core_if);
+       } else {
+               gotgctl_data_t gotgctl;
+               gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+               DWC_PRINTF("DEVICE MODE\n");
+               if (gotgctl.b.bsesvld == 0) {
+                       /* Enable Power Down Logic Interrupt*/
+                       gpwrdn.d32 = 0;
+                       DWC_PRINTF("VBUS is not valid - start ADP probe\n");
+                       gpwrdn.b.pmuintsel = 1;
+                       gpwrdn.b.pmuactv = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+                       core_if->adp.initial_probe = 1;
+                       dwc_otg_adp_probe_start(core_if);
+               } else {
+                       DWC_PRINTF("VBUS is valid - initialize core as a Device\n");
+                       core_if->op_state = B_PERIPHERAL;
+                       dwc_otg_core_init(core_if);
+                       dwc_otg_enable_global_interrupts(core_if);
+                       cil_pcd_start(core_if);
+                       dwc_otg_dump_global_registers(core_if);
+                       dwc_otg_dump_dev_registers(core_if);
+               }
+       }
+}
+
+void dwc_otg_adp_init(dwc_otg_core_if_t * core_if)
+{
+       core_if->adp.adp_started = 0;
+       core_if->adp.initial_probe = 0;
+       core_if->adp.probe_timer_values[0] = -1;
+       core_if->adp.probe_timer_values[1] = -1;
+       core_if->adp.probe_enabled = 0;
+       core_if->adp.sense_enabled = 0;
+       core_if->adp.sense_timer_started = 0;
+       core_if->adp.vbuson_timer_started = 0;
+       core_if->adp.probe_counter = 0;
+       core_if->adp.gpwrdn = 0;
+       core_if->adp.attached = DWC_OTG_ADP_UNKOWN;
+       /* Initialize timers */
+       core_if->adp.sense_timer =
+           DWC_TIMER_ALLOC("ADP SENSE TIMER", adp_sense_timeout, core_if);
+       core_if->adp.vbuson_timer =
+           DWC_TIMER_ALLOC("ADP VBUS ON TIMER", adp_vbuson_timeout, core_if);
+       if (!core_if->adp.sense_timer || !core_if->adp.vbuson_timer)
+       {
+               DWC_ERROR("Could not allocate memory for ADP timers\n");
+       }
+}
+
+void dwc_otg_adp_remove(dwc_otg_core_if_t * core_if)
+{
+       gpwrdn_data_t gpwrdn = { .d32 = 0 };
+       gpwrdn.b.pmuintsel = 1;
+       gpwrdn.b.pmuactv = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       if (core_if->adp.probe_enabled)         
+               dwc_otg_adp_probe_stop(core_if);
+       if (core_if->adp.sense_enabled)         
+               dwc_otg_adp_sense_stop(core_if);
+       if (core_if->adp.sense_timer_started)           
+               DWC_TIMER_CANCEL(core_if->adp.sense_timer);
+       if (core_if->adp.vbuson_timer_started)          
+               DWC_TIMER_CANCEL(core_if->adp.vbuson_timer);
+       DWC_TIMER_FREE(core_if->adp.sense_timer);
+       DWC_TIMER_FREE(core_if->adp.vbuson_timer);
+}
+
+/////////////////////////////////////////////////////////////////////
+////////////// ADP Interrupt Handlers ///////////////////////////////
+/////////////////////////////////////////////////////////////////////
+/**
+ * This function sets Ramp Timer values
+ */
+static uint32_t set_timer_value(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       if (core_if->adp.probe_timer_values[0] == -1) {
+               core_if->adp.probe_timer_values[0] = val;
+               core_if->adp.probe_timer_values[1] = -1;
+               return 1;
+       } else {
+               core_if->adp.probe_timer_values[1] =
+                   core_if->adp.probe_timer_values[0];
+               core_if->adp.probe_timer_values[0] = val;
+               return 0;
+       }
+}
+
+/**
+ * This function compares Ramp Timer values
+ */
+static uint32_t compare_timer_values(dwc_otg_core_if_t * core_if)
+{
+       uint32_t diff;
+       if (core_if->adp.probe_timer_values[0]>=core_if->adp.probe_timer_values[1])
+                       diff = core_if->adp.probe_timer_values[0]-core_if->adp.probe_timer_values[1];
+       else
+                       diff = core_if->adp.probe_timer_values[1]-core_if->adp.probe_timer_values[0];           
+       if(diff < 2) {
+               return 0;
+       } else {
+               return 1;
+       }
+}
+
+/**
+ * This function handles ADP Probe Interrupts
+ */
+static int32_t dwc_otg_adp_handle_prb_intr(dwc_otg_core_if_t * core_if,
+                                                uint32_t val)
+{
+       adpctl_data_t adpctl = {.d32 = 0 };
+       gpwrdn_data_t gpwrdn, temp;
+       adpctl.d32 = val;
+
+       temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       core_if->adp.probe_counter++;
+       core_if->adp.gpwrdn = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       if (adpctl.b.rtim == 0 && !temp.b.idsts){
+               DWC_PRINTF("RTIM value is 0\n");        
+               goto exit;
+       }
+       if (set_timer_value(core_if, adpctl.b.rtim) &&
+           core_if->adp.initial_probe) {
+               core_if->adp.initial_probe = 0;
+               dwc_otg_adp_probe_stop(core_if);
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pmuactv = 1;
+               gpwrdn.b.pmuintsel = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+               /* check which value is for device mode and which for Host mode */
+               if (!temp.b.idsts) {    /* considered host mode value is 0 */
+                       /*
+                        * Turn on VBUS after initial ADP probe.
+                        */
+                       core_if->op_state = A_HOST;
+                       dwc_otg_enable_global_interrupts(core_if);
+                       DWC_SPINUNLOCK(core_if->lock);
+                       cil_hcd_start(core_if);
+                       dwc_otg_adp_turnon_vbus(core_if);
+                       DWC_SPINLOCK(core_if->lock);
+               } else {
+                       /*
+                        * Initiate SRP after initial ADP probe.
+                        */
+                       dwc_otg_enable_global_interrupts(core_if);
+                       dwc_otg_initiate_srp(core_if);
+               }
+       } else if (core_if->adp.probe_counter > 2){
+               gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+               if (compare_timer_values(core_if)) {
+                       DWC_PRINTF("Difference in timer values !!! \n");
+//                      core_if->adp.attached = DWC_OTG_ADP_ATTACHED;
+                       dwc_otg_adp_probe_stop(core_if);
+
+                       /* Power on the core */
+                       if (core_if->power_down == 2) {
+                               gpwrdn.b.pwrdnswtch = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                       }
+
+                       /* check which value is for device mode and which for Host mode */
+                       if (!temp.b.idsts) {    /* considered host mode value is 0 */
+                               /* Disable Interrupt from Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuintsel = 1;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, gpwrdn.d32, 0);
+
+                               /*
+                                * Initialize the Core for Host mode.
+                                */
+                               core_if->op_state = A_HOST;
+                               dwc_otg_core_init(core_if);
+                               dwc_otg_enable_global_interrupts(core_if);
+                               cil_hcd_start(core_if);
+                       } else {
+                               gotgctl_data_t gotgctl;
+                               /* Mask SRP detected interrupt from Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.srp_det_msk = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, gpwrdn.d32, 0);
+
+                               /* Disable Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuintsel = 1;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, gpwrdn.d32, 0);
+
+                               /*
+                                * Initialize the Core for Device mode.
+                                */
+                               core_if->op_state = B_PERIPHERAL;
+                               dwc_otg_core_init(core_if);
+                               dwc_otg_enable_global_interrupts(core_if);
+                               cil_pcd_start(core_if);
+
+                               gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+                               if (!gotgctl.b.bsesvld) {
+                                       dwc_otg_initiate_srp(core_if);
+                               }
+                       }
+               }
+               if (core_if->power_down == 2) {
+                       if (gpwrdn.b.bsessvld) {
+                               /* Mask SRP detected interrupt from Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.srp_det_msk = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+                               
+                               /* Disable Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+                               /*
+                                * Initialize the Core for Device mode.
+                                */
+                               core_if->op_state = B_PERIPHERAL;
+                               dwc_otg_core_init(core_if);
+                               dwc_otg_enable_global_interrupts(core_if);
+                               cil_pcd_start(core_if);
+                       }
+               }
+       }
+exit:
+       /* Clear interrupt */
+       adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       adpctl.b.adp_prb_int = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       return 0;
+}
+
+/**
+ * This function hadles ADP Sense Interrupt
+ */
+static int32_t dwc_otg_adp_handle_sns_intr(dwc_otg_core_if_t * core_if)
+{
+       adpctl_data_t adpctl;
+       /* Stop ADP Sense timer */
+       DWC_TIMER_CANCEL(core_if->adp.sense_timer);
+
+       /* Restart ADP Sense timer */
+       dwc_otg_adp_sense_timer_start(core_if);
+       
+       /* Clear interrupt */
+       adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       adpctl.b.adp_sns_int = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       return 0;
+}
+
+/**
+ * This function handles ADP Probe Interrupts
+ */
+static int32_t dwc_otg_adp_handle_prb_tmout_intr(dwc_otg_core_if_t * core_if,
+                                                uint32_t val)
+{
+       adpctl_data_t adpctl = {.d32 = 0 };
+       adpctl.d32 = val;
+       set_timer_value(core_if, adpctl.b.rtim);
+       
+       /* Clear interrupt */
+       adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       adpctl.b.adp_tmout_int = 1;
+       dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+       return 0;
+}
+
+/**
+ * ADP Interrupt handler.
+ *
+ */
+int32_t dwc_otg_adp_handle_intr(dwc_otg_core_if_t * core_if)
+{
+       int retval = 0;
+       adpctl_data_t adpctl = {.d32 = 0};
+
+       adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+       DWC_PRINTF("ADPCTL = %08x\n",adpctl.d32);
+
+       if (adpctl.b.adp_sns_int & adpctl.b.adp_sns_int_msk) {
+               DWC_PRINTF("ADP Sense interrupt\n");
+               retval |= dwc_otg_adp_handle_sns_intr(core_if);
+       }
+       if (adpctl.b.adp_tmout_int & adpctl.b.adp_tmout_int_msk) {
+               DWC_PRINTF("ADP timeout interrupt\n");
+               retval |= dwc_otg_adp_handle_prb_tmout_intr(core_if, adpctl.d32);
+       }
+       if (adpctl.b.adp_prb_int & adpctl.b.adp_prb_int_msk) {
+               DWC_PRINTF("ADP Probe interrupt\n");
+               adpctl.b.adp_prb_int = 1;       
+               retval |= dwc_otg_adp_handle_prb_intr(core_if, adpctl.d32);
+       }
+
+//     dwc_otg_adp_modify_reg(core_if, adpctl.d32, 0);
+       //dwc_otg_adp_write_reg(core_if, adpctl.d32);
+       DWC_PRINTF("RETURN FROM ADP ISR\n");
+
+       return retval;
+}
+
+/**
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_adp_handle_srp_intr(dwc_otg_core_if_t * core_if)
+{
+
+#ifndef DWC_HOST_ONLY
+       hprt0_data_t hprt0;
+       gpwrdn_data_t gpwrdn;
+       DWC_DEBUGPL(DBG_ANY, "++ Power Down Logic Session Request Interrupt++\n");
+
+       gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       /* check which value is for device mode and which for Host mode */
+       if (!gpwrdn.b.idsts) {  /* considered host mode value is 0 */
+               DWC_PRINTF("SRP: Host mode\n");
+
+               if (core_if->adp_enable) {
+                       dwc_otg_adp_probe_stop(core_if);
+
+                       /* Power on the core */
+                       if (core_if->power_down == 2) {
+                               gpwrdn.b.pwrdnswtch = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                       }
+
+                       core_if->op_state = A_HOST;
+                       dwc_otg_core_init(core_if);
+                       dwc_otg_enable_global_interrupts(core_if);
+                       cil_hcd_start(core_if);
+               }
+
+               /* Turn on the port power bit. */
+               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+               hprt0.b.prtpwr = 1;
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+               /* Start the Connection timer. So a message can be displayed
+                * if connect does not occur within 10 seconds. */
+               cil_hcd_session_start(core_if);
+       } else {
+               DWC_PRINTF("SRP: Device mode %s\n", __FUNCTION__);
+               if (core_if->adp_enable) {
+                       dwc_otg_adp_probe_stop(core_if);
+
+                       /* Power on the core */
+                       if (core_if->power_down == 2) {
+                               gpwrdn.b.pwrdnswtch = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                       }
+
+                       gpwrdn.d32 = 0;
+                       gpwrdn.b.pmuactv = 0;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+                                        gpwrdn.d32);
+
+                       core_if->op_state = B_PERIPHERAL;
+                       dwc_otg_core_init(core_if);
+                       dwc_otg_enable_global_interrupts(core_if);
+                       cil_pcd_start(core_if);
+               }
+       }
+#endif
+       return 1;
+}
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_adp.h b/drivers/usb/host/dwc_otg/dwc_otg_adp.h
new file mode 100644
index 0000000..d8c3f85
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_adp.h
@@ -0,0 +1,80 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_adp.h $
+ * $Revision: #7 $
+ * $Date: 2011/10/24 $
+ * $Change: 1871159 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_ADP_H__
+#define __DWC_OTG_ADP_H__
+
+/**
+ * @file
+ *
+ * This file contains the Attach Detect Protocol interfaces and defines
+ * (functions) and structures for Linux.
+ *
+ */
+
+#define DWC_OTG_ADP_UNATTACHED 0
+#define DWC_OTG_ADP_ATTACHED   1
+#define DWC_OTG_ADP_UNKOWN     2
+
+typedef struct dwc_otg_adp {
+       uint32_t adp_started;   
+       uint32_t initial_probe;
+       int32_t probe_timer_values[2];
+       uint32_t probe_enabled;
+       uint32_t sense_enabled;
+       dwc_timer_t *sense_timer;
+       uint32_t sense_timer_started;
+       dwc_timer_t *vbuson_timer;
+       uint32_t vbuson_timer_started;
+       uint32_t attached;
+       uint32_t probe_counter;
+       uint32_t gpwrdn;
+} dwc_otg_adp_t;
+
+/**
+ * Attach Detect Protocol functions
+ */
+
+extern void dwc_otg_adp_write_reg(dwc_otg_core_if_t * core_if, uint32_t value);
+extern uint32_t dwc_otg_adp_read_reg(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_probe_start(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_sense_start(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_probe_stop(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_sense_stop(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host);
+extern void dwc_otg_adp_init(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_adp_remove(dwc_otg_core_if_t * core_if);
+extern int32_t dwc_otg_adp_handle_intr(dwc_otg_core_if_t * core_if);
+extern int32_t dwc_otg_adp_handle_srp_intr(dwc_otg_core_if_t * core_if);
+
+#endif //__DWC_OTG_ADP_H__
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_attr.c b/drivers/usb/host/dwc_otg/dwc_otg_attr.c
new file mode 100644
index 0000000..95eb7f8
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_attr.c
@@ -0,0 +1,1210 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.c $
+ * $Revision: #44 $
+ * $Date: 2010/11/29 $
+ * $Change: 1636033 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.  The Linux driver attributes
+ * feature will be used to provide the Linux Diagnostic
+ * Interface. These attributes are accessed through sysfs.
+ */
+
+/** @page "Linux Module Attributes"
+ *
+ * The Linux module attributes feature is used to provide the Linux
+ * Diagnostic Interface.  These attributes are accessed through sysfs.
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.
+
+ The following table shows the attributes.
+ <table>
+ <tr>
+ <td><b> Name</b></td>
+ <td><b> Description</b></td>
+ <td><b> Access</b></td>
+ </tr>
+
+ <tr>
+ <td> mode </td>
+ <td> Returns the current mode: 0 for device mode, 1 for host mode</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hnpcapable </td>
+ <td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> srpcapable </td>
+ <td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> hsic_connect </td>
+ <td> Gets or sets the "HSIC-Connect" bit in the GLPMCFG Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> inv_sel_hsic </td>
+ <td> Gets or sets the "Invert Select HSIC" bit in the GLPMFG Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> hnp </td>
+ <td> Initiates the Host Negotiation Protocol.  Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> srp </td>
+ <td> Initiates the Session Request Protocol.  Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> buspower </td>
+ <td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> bussuspend </td>
+ <td> Suspends the USB bus.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> busconnected </td>
+ <td> Gets the connection status of the bus</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> gotgctl </td>
+ <td> Gets or sets the Core Control Status Register.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gusbcfg </td>
+ <td> Gets or sets the Core USB Configuration Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> grxfsiz </td>
+ <td> Gets or sets the Receive FIFO Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gnptxfsiz </td>
+ <td> Gets or sets the non-periodic Transmit Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gpvndctl </td>
+ <td> Gets or sets the PHY Vendor Control Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> ggpio </td>
+ <td> Gets the value in the lower 16-bits of the General Purpose IO Register
+ or sets the upper 16 bits.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> guid </td>
+ <td> Gets or sets the value of the User ID Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gsnpsid </td>
+ <td> Gets the value of the Synopsys ID Regester</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> devspeed </td>
+ <td> Gets or sets the device speed setting in the DCFG register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> enumspeed </td>
+ <td> Gets the device enumeration Speed.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hptxfsiz </td>
+ <td> Gets the value of the Host Periodic Transmit FIFO</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hprt0 </td>
+ <td> Gets or sets the value in the Host Port Control and Status Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regoffset </td>
+ <td> Sets the register offset for the next Register Access</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regvalue </td>
+ <td> Gets or sets the value of the register at the offset in the regoffset attribute.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> remote_wakeup </td>
+ <td> On read, shows the status of Remote Wakeup. On write, initiates a remote
+ wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote
+ Wakeup signalling bit in the Device Control Register is set for 1
+ milli-second.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> rem_wakeup_pwrdn </td>
+ <td> On read, shows the status core - hibernated or not. On write, initiates 
+ a remote wakeup of the device from Hibernation. </td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> mode_ch_tim_en </td>
+ <td> This bit is used to enable or disable the host core to wait for 200 PHY 
+ clock cycles at the end of Resume to change the opmode signal to the PHY to 00
+ after Suspend or LPM. </td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> fr_interval </td>
+ <td> On read, shows the value of HFIR Frame Interval. On write, dynamically 
+ reload HFIR register during runtime. The application can write a value to this
+ register only after the Port Enable bit of the Host Port Control and Status 
+ register (HPRT.PrtEnaPort) has been set </td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> disconnect_us </td>
+ <td> On read, shows the status of disconnect_device_us. On write, sets disconnect_us
+ which causes soft disconnect for 100us. Applicable only for device mode of operation.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> spramdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hcddump </td>
+ <td> Dumps the current HCD state.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hcd_frrem </td>
+ <td> Shows the average value of the Frame Remaining
+ field in the Host Frame Number/Frame Remaining register when an SOF interrupt
+ occurs. This can be used to determine the average interrupt latency. Also
+ shows the average Frame Remaining value for start_transfer and the "a" and
+ "b" sample points. The "a" and "b" sample points may be used during debugging
+ bto determine how long it takes to execute a section of the HCD code.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> rd_reg_test </td>
+ <td> Displays the time required to read the GNPTXFSIZ register many times
+ (the output shows the number of times the register is read).
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> wr_reg_test </td>
+ <td> Displays the time required to write the GNPTXFSIZ register many times
+ (the output shows the number of times the register is written).
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> lpm_response </td>
+ <td> Gets or sets lpm_response mode. Applicable only in device mode.
+ <td> Write</td>
+ </tr>
+
+ <tr>
+ <td> sleep_status </td>
+ <td> Shows sleep status of device.
+ <td> Read</td>
+ </tr>
+
+ </table>
+
+ Example usage:
+ To get the current mode:
+ cat /sys/devices/lm0/mode
+
+ To power down the USB:
+ echo 0 > /sys/devices/lm0/buspower
+ */
+
+#include "dwc_otg_os_dep.h"
+#include "dwc_os.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_core_if.h"
+#include "dwc_otg_pcd_if.h"
+#include "dwc_otg_hcd_if.h"
+
+/*
+ * MACROs for defining sysfs attribute
+ */
+#ifdef LM_INTERFACE
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+       struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+       dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);             \
+       uint32_t val; \
+       val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+       return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+                                       const char *buf, size_t count) \
+{ \
+       struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+       dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
+       uint32_t set = simple_strtoul(buf, NULL, 16); \
+       dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
+       return count; \
+}
+
+#elif defined(PCI_INTERFACE)
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);      \
+       uint32_t val; \
+       val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+       return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+                                       const char *buf, size_t count) \
+{ \
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
+       uint32_t set = simple_strtoul(buf, NULL, 16); \
+       dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
+       return count; \
+}
+
+#elif defined(PLATFORM_INTERFACE)
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+        struct platform_device *platform_dev = \
+                container_of(_dev, struct platform_device, dev); \
+        dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);  \
+       uint32_t val; \
+       DWC_PRINTF("%s(%p) -> platform_dev %p, otg_dev %p\n", \
+                    __func__, _dev, platform_dev, otg_dev); \
+       val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+       return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+                                       const char *buf, size_t count) \
+{ \
+        struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
+        dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
+       uint32_t set = simple_strtoul(buf, NULL, 16); \
+       dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
+       return count; \
+}
+#endif
+
+/*
+ * MACROs for defining sysfs attribute for 32-bit registers
+ */
+#ifdef LM_INTERFACE
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+       struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+       dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
+       uint32_t val; \
+       val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+       return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+                                       const char *buf, size_t count) \
+{ \
+       struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+       dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
+       uint32_t val = simple_strtoul(buf, NULL, 16); \
+       dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
+       return count; \
+}
+#elif defined(PCI_INTERFACE)
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
+       uint32_t val; \
+       val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+       return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+                                       const char *buf, size_t count) \
+{ \
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
+       uint32_t val = simple_strtoul(buf, NULL, 16); \
+       dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
+       return count; \
+}
+
+#elif defined(PLATFORM_INTERFACE)
+#include "dwc_otg_dbg.h"
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+       struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
+       dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
+       uint32_t val; \
+       DWC_PRINTF("%s(%p) -> platform_dev %p, otg_dev %p\n", \
+                    __func__, _dev, platform_dev, otg_dev); \
+       val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+       return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+                                       const char *buf, size_t count) \
+{ \
+       struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
+       dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
+       uint32_t val = simple_strtoul(buf, NULL, 16); \
+       dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
+       return count; \
+}
+
+#endif
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+/** @name Functions for Show/Store of Attributes */
+/**@{*/
+
+/**
+ * Helper function returning the otg_device structure of the given device
+ */
+static dwc_otg_device_t *dwc_otg_drvdev(struct device *_dev)
+{
+        dwc_otg_device_t *otg_dev;
+        DWC_OTG_GETDRVDEV(otg_dev, _dev);
+        return otg_dev;
+}
+
+/**
+ * Show the register offset of the Register Access.
+ */
+static ssize_t regoffset_show(struct device *_dev,
+                             struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return snprintf(buf, sizeof("0xFFFFFFFF\n") + 1, "0x%08x\n",
+                       otg_dev->os_dep.reg_offset);
+}
+
+/**
+ * Set the register offset for the next Register Access        Read/Write
+ */
+static ssize_t regoffset_store(struct device *_dev,
+                              struct device_attribute *attr,
+                              const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t offset = simple_strtoul(buf, NULL, 16);
+#if defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
+       if (offset < SZ_256K) {
+#elif  defined(PCI_INTERFACE)
+       if (offset < 0x00040000) {
+#endif
+               otg_dev->os_dep.reg_offset = offset;
+       } else {
+               dev_err(_dev, "invalid offset\n");
+       }
+
+       return count;
+}
+
+DEVICE_ATTR(regoffset, S_IRUGO | S_IWUSR, regoffset_show, regoffset_store);
+
+/**
+ * Show the value of the register at the offset in the reg_offset
+ * attribute.
+ */
+static ssize_t regvalue_show(struct device *_dev,
+                            struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t val;
+       volatile uint32_t *addr;
+
+       if (otg_dev->os_dep.reg_offset != 0xFFFFFFFF && 0 != otg_dev->os_dep.base) {
+               /* Calculate the address */
+               addr = (uint32_t *) (otg_dev->os_dep.reg_offset +
+                                    (uint8_t *) otg_dev->os_dep.base);
+               val = DWC_READ_REG32(addr);
+               return snprintf(buf,
+                               sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n") + 1,
+                               "Reg@0x%06x = 0x%08x\n", otg_dev->os_dep.reg_offset,
+                               val);
+       } else {
+               dev_err(_dev, "Invalid offset (0x%0x)\n", otg_dev->os_dep.reg_offset);
+               return sprintf(buf, "invalid offset\n");
+       }
+}
+
+/**
+ * Store the value in the register at the offset in the reg_offset
+ * attribute.
+ *
+ */
+static ssize_t regvalue_store(struct device *_dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       volatile uint32_t *addr;
+       uint32_t val = simple_strtoul(buf, NULL, 16);
+       //dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val);
+       if (otg_dev->os_dep.reg_offset != 0xFFFFFFFF && 0 != otg_dev->os_dep.base) {
+               /* Calculate the address */
+               addr = (uint32_t *) (otg_dev->os_dep.reg_offset +
+                                    (uint8_t *) otg_dev->os_dep.base);
+               DWC_WRITE_REG32(addr, val);
+       } else {
+               dev_err(_dev, "Invalid Register Offset (0x%08x)\n",
+                       otg_dev->os_dep.reg_offset);
+       }
+       return count;
+}
+
+DEVICE_ATTR(regvalue, S_IRUGO | S_IWUSR, regvalue_show, regvalue_store);
+
+/*
+ * Attributes
+ */
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode, "Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable, "HNPCapable");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable, "SRPCapable");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hsic_connect, "HSIC Connect");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(inv_sel_hsic, "Invert Select HSIC");
+
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected, "Bus Connected");
+
+DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl, 0, "GOTGCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,
+                            &(otg_dev->core_if->core_global_regs->gusbcfg),
+                            "GUSBCFG");
+DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,
+                            &(otg_dev->core_if->core_global_regs->grxfsiz),
+                            "GRXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,
+                            &(otg_dev->core_if->core_global_regs->gnptxfsiz),
+                            "GNPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,
+                            &(otg_dev->core_if->core_global_regs->gpvndctl),
+                            "GPVNDCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,
+                            &(otg_dev->core_if->core_global_regs->ggpio),
+                            "GGPIO");
+DWC_OTG_DEVICE_ATTR_REG32_RW(guid, &(otg_dev->core_if->core_global_regs->guid),
+                            "GUID");
+DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,
+                            &(otg_dev->core_if->core_global_regs->gsnpsid),
+                            "GSNPSID");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed, "Device Speed");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed, "Device Enumeration Speed");
+
+DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,
+                            &(otg_dev->core_if->core_global_regs->hptxfsiz),
+                            "HPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0, otg_dev->core_if->host_if->hprt0, "HPRT0");
+
+/**
+ * @todo Add code to initiate the HNP.
+ */
+/**
+ * Show the HNP status bit
+ */
+static ssize_t hnp_show(struct device *_dev,
+                       struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "HstNegScs = 0x%x\n",
+                      dwc_otg_get_hnpstatus(otg_dev->core_if));
+}
+
+/**
+ * Set the HNP Request bit
+ */
+static ssize_t hnp_store(struct device *_dev,
+                        struct device_attribute *attr,
+                        const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t in = simple_strtoul(buf, NULL, 16);
+       dwc_otg_set_hnpreq(otg_dev->core_if, in);
+       return count;
+}
+
+DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
+
+/**
+ * @todo Add code to initiate the SRP.
+ */
+/**
+ * Show the SRP status bit
+ */
+static ssize_t srp_show(struct device *_dev,
+                       struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "SesReqScs = 0x%x\n",
+                      dwc_otg_get_srpstatus(otg_dev->core_if));
+#else
+       return sprintf(buf, "Host Only Mode!\n");
+#endif
+}
+
+/**
+ * Set the SRP Request bit
+ */
+static ssize_t srp_store(struct device *_dev,
+                        struct device_attribute *attr,
+                        const char *buf, size_t count)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       dwc_otg_pcd_initiate_srp(otg_dev->pcd);
+#endif
+       return count;
+}
+
+DEVICE_ATTR(srp, 0644, srp_show, srp_store);
+
+/**
+ * @todo Need to do more for power on/off?
+ */
+/**
+ * Show the Bus Power status
+ */
+static ssize_t buspower_show(struct device *_dev,
+                            struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "Bus Power = 0x%x\n",
+                      dwc_otg_get_prtpower(otg_dev->core_if));
+}
+
+/**
+ * Set the Bus Power status
+ */
+static ssize_t buspower_store(struct device *_dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t on = simple_strtoul(buf, NULL, 16);
+       dwc_otg_set_prtpower(otg_dev->core_if, on);
+       return count;
+}
+
+DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
+
+/**
+ * @todo Need to do more for suspend?
+ */
+/**
+ * Show the Bus Suspend status
+ */
+static ssize_t bussuspend_show(struct device *_dev,
+                              struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "Bus Suspend = 0x%x\n",
+                      dwc_otg_get_prtsuspend(otg_dev->core_if));
+}
+
+/**
+ * Set the Bus Suspend status
+ */
+static ssize_t bussuspend_store(struct device *_dev,
+                               struct device_attribute *attr,
+                               const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t in = simple_strtoul(buf, NULL, 16);
+       dwc_otg_set_prtsuspend(otg_dev->core_if, in);
+       return count;
+}
+
+DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
+
+/**
+ * Show the Mode Change Ready Timer status
+ */
+static ssize_t mode_ch_tim_en_show(struct device *_dev,
+                                  struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "Mode Change Ready Timer Enable = 0x%x\n",
+                      dwc_otg_get_mode_ch_tim(otg_dev->core_if));
+}
+
+/**
+ * Set the Mode Change Ready Timer status
+ */
+static ssize_t mode_ch_tim_en_store(struct device *_dev,
+                                   struct device_attribute *attr,
+                                   const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t in = simple_strtoul(buf, NULL, 16);
+       dwc_otg_set_mode_ch_tim(otg_dev->core_if, in);
+       return count;
+}
+
+DEVICE_ATTR(mode_ch_tim_en, 0644, mode_ch_tim_en_show, mode_ch_tim_en_store);
+
+/**
+ * Show the value of HFIR Frame Interval bitfield
+ */
+static ssize_t fr_interval_show(struct device *_dev,
+                               struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "Frame Interval = 0x%x\n",
+                      dwc_otg_get_fr_interval(otg_dev->core_if));
+}
+
+/**
+ * Set the HFIR Frame Interval value
+ */
+static ssize_t fr_interval_store(struct device *_dev,
+                                struct device_attribute *attr,
+                                const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t in = simple_strtoul(buf, NULL, 10);
+       dwc_otg_set_fr_interval(otg_dev->core_if, in);
+       return count;
+}
+
+DEVICE_ATTR(fr_interval, 0644, fr_interval_show, fr_interval_store);
+
+/**
+ * Show the status of Remote Wakeup.
+ */
+static ssize_t remote_wakeup_show(struct device *_dev,
+                                 struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+       return sprintf(buf,
+                      "Remote Wakeup Sig = %d Enabled = %d LPM Remote Wakeup = %d\n",
+                      dwc_otg_get_remotewakesig(otg_dev->core_if),
+                      dwc_otg_pcd_get_rmwkup_enable(otg_dev->pcd),
+                      dwc_otg_get_lpm_remotewakeenabled(otg_dev->core_if));
+#else
+       return sprintf(buf, "Host Only Mode!\n");
+#endif /* DWC_HOST_ONLY */
+}
+
+/**
+ * Initiate a remote wakeup of the host.  The Device control register
+ * Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
+ * flag is set.
+ *
+ */
+static ssize_t remote_wakeup_store(struct device *_dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t count)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t val = simple_strtoul(buf, NULL, 16);
+
+       if (val & 1) {
+               dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
+       } else {
+               dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
+       }
+#endif /* DWC_HOST_ONLY */
+       return count;
+}
+
+DEVICE_ATTR(remote_wakeup, S_IRUGO | S_IWUSR, remote_wakeup_show,
+           remote_wakeup_store);
+
+/**
+ * Show the whether core is hibernated or not.                                         
+ */
+static ssize_t rem_wakeup_pwrdn_show(struct device *_dev,
+                                    struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+       if (dwc_otg_get_core_state(otg_dev->core_if)) {
+               DWC_PRINTF("Core is in hibernation\n");
+       } else {
+               DWC_PRINTF("Core is not in hibernation\n");
+       }
+#endif /* DWC_HOST_ONLY */
+       return 0;
+}
+
+extern int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
+                                             int rem_wakeup, int reset);
+
+/**
+ * Initiate a remote wakeup of the device to exit from hibernation.
+ */
+static ssize_t rem_wakeup_pwrdn_store(struct device *_dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       dwc_otg_device_hibernation_restore(otg_dev->core_if, 1, 0);
+#endif
+       return count;
+}
+
+DEVICE_ATTR(rem_wakeup_pwrdn, S_IRUGO | S_IWUSR, rem_wakeup_pwrdn_show,
+           rem_wakeup_pwrdn_store);
+
+static ssize_t disconnect_us(struct device *_dev,
+                            struct device_attribute *attr,
+                            const char *buf, size_t count)
+{
+
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t val = simple_strtoul(buf, NULL, 16);
+       DWC_PRINTF("The Passed value is %04x\n", val);
+
+       dwc_otg_pcd_disconnect_us(otg_dev->pcd, 50);
+
+#endif /* DWC_HOST_ONLY */
+       return count;
+}
+
+DEVICE_ATTR(disconnect_us, S_IWUSR, 0, disconnect_us);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t regdump_show(struct device *_dev,
+                           struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+       dwc_otg_dump_global_registers(otg_dev->core_if);
+       if (dwc_otg_is_host_mode(otg_dev->core_if)) {
+               dwc_otg_dump_host_registers(otg_dev->core_if);
+       } else {
+               dwc_otg_dump_dev_registers(otg_dev->core_if);
+
+       }
+       return sprintf(buf, "Register Dump\n");
+}
+
+DEVICE_ATTR(regdump, S_IRUGO | S_IWUSR, regdump_show, 0);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t spramdump_show(struct device *_dev,
+                             struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+       dwc_otg_dump_spram(otg_dev->core_if);
+
+       return sprintf(buf, "SPRAM Dump\n");
+}
+
+DEVICE_ATTR(spramdump, S_IRUGO | S_IWUSR, spramdump_show, 0);
+
+/**
+ * Dump the current hcd state.
+ */
+static ssize_t hcddump_show(struct device *_dev,
+                           struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_DEVICE_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       dwc_otg_hcd_dump_state(otg_dev->hcd);
+#endif /* DWC_DEVICE_ONLY */
+       return sprintf(buf, "HCD Dump\n");
+}
+
+DEVICE_ATTR(hcddump, S_IRUGO | S_IWUSR, hcddump_show, 0);
+
+/**
+ * Dump the average frame remaining at SOF. This can be used to
+ * determine average interrupt latency. Frame remaining is also shown for
+ * start transfer and two additional sample points.
+ */
+static ssize_t hcd_frrem_show(struct device *_dev,
+                             struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_DEVICE_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+       dwc_otg_hcd_dump_frrem(otg_dev->hcd);
+#endif /* DWC_DEVICE_ONLY */
+       return sprintf(buf, "HCD Dump Frame Remaining\n");
+}
+
+DEVICE_ATTR(hcd_frrem, S_IRUGO | S_IWUSR, hcd_frrem_show, 0);
+
+/**
+ * Displays the time required to read the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is read).
+ */
+#define RW_REG_COUNT 10000000
+#define MSEC_PER_JIFFIE 1000/HZ
+static ssize_t rd_reg_test_show(struct device *_dev,
+                               struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       int i;
+       int time;
+       int start_jiffies;
+
+       printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+              HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+       start_jiffies = jiffies;
+       for (i = 0; i < RW_REG_COUNT; i++) {
+               dwc_otg_get_gnptxfsiz(otg_dev->core_if);
+       }
+       time = jiffies - start_jiffies;
+       return sprintf(buf,
+                      "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+                      RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
+}
+
+DEVICE_ATTR(rd_reg_test, S_IRUGO | S_IWUSR, rd_reg_test_show, 0);
+
+/**
+ * Displays the time required to write the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is written).
+ */
+static ssize_t wr_reg_test_show(struct device *_dev,
+                               struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t reg_val;
+       int i;
+       int time;
+       int start_jiffies;
+
+       printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+              HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+       reg_val = dwc_otg_get_gnptxfsiz(otg_dev->core_if);
+       start_jiffies = jiffies;
+       for (i = 0; i < RW_REG_COUNT; i++) {
+               dwc_otg_set_gnptxfsiz(otg_dev->core_if, reg_val);
+       }
+       time = jiffies - start_jiffies;
+       return sprintf(buf,
+                      "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+                      RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
+}
+
+DEVICE_ATTR(wr_reg_test, S_IRUGO | S_IWUSR, wr_reg_test_show, 0);
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+
+/**
+* Show the lpm_response attribute.
+*/
+static ssize_t lpmresp_show(struct device *_dev,
+                           struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+       if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if))
+               return sprintf(buf, "** LPM is DISABLED **\n");
+
+       if (!dwc_otg_is_device_mode(otg_dev->core_if)) {
+               return sprintf(buf, "** Current mode is not device mode\n");
+       }
+       return sprintf(buf, "lpm_response = %d\n",
+                      dwc_otg_get_lpmresponse(otg_dev->core_if));
+}
+
+/**
+* Store the lpm_response attribute.
+*/
+static ssize_t lpmresp_store(struct device *_dev,
+                            struct device_attribute *attr,
+                            const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       uint32_t val = simple_strtoul(buf, NULL, 16);
+
+       if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if)) {
+               return 0;
+       }
+
+       if (!dwc_otg_is_device_mode(otg_dev->core_if)) {
+               return 0;
+       }
+
+       dwc_otg_set_lpmresponse(otg_dev->core_if, val);
+       return count;
+}
+
+DEVICE_ATTR(lpm_response, S_IRUGO | S_IWUSR, lpmresp_show, lpmresp_store);
+
+/**
+* Show the sleep_status attribute.
+*/
+static ssize_t sleepstatus_show(struct device *_dev,
+                               struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       return sprintf(buf, "Sleep Status = %d\n",
+                      dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if));
+}
+
+/**
+ * Store the sleep_status attribure.
+ */
+static ssize_t sleepstatus_store(struct device *_dev,
+                                struct device_attribute *attr,
+                                const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+       dwc_otg_core_if_t *core_if = otg_dev->core_if;
+
+       if (dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if)) {
+               if (dwc_otg_is_host_mode(core_if)) {
+
+                       DWC_PRINTF("Host initiated resume\n");
+                       dwc_otg_set_prtresume(otg_dev->core_if, 1);
+               }
+       }
+
+       return count;
+}
+
+DEVICE_ATTR(sleep_status, S_IRUGO | S_IWUSR, sleepstatus_show,
+           sleepstatus_store);
+
+#endif /* CONFIG_USB_DWC_OTG_LPM_ENABLE */
+
+/**@}*/
+
+/**
+ * Create the device files
+ */
+void dwc_otg_attr_create(
+#ifdef LM_INTERFACE
+       struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+       struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+        struct platform_device *dev
+#endif
+    )
+{
+       int error;
+
+       error = device_create_file(&dev->dev, &dev_attr_regoffset);
+       error = device_create_file(&dev->dev, &dev_attr_regvalue);
+       error = device_create_file(&dev->dev, &dev_attr_mode);
+       error = device_create_file(&dev->dev, &dev_attr_hnpcapable);
+       error = device_create_file(&dev->dev, &dev_attr_srpcapable);
+       error = device_create_file(&dev->dev, &dev_attr_hsic_connect);
+       error = device_create_file(&dev->dev, &dev_attr_inv_sel_hsic);
+       error = device_create_file(&dev->dev, &dev_attr_hnp);
+       error = device_create_file(&dev->dev, &dev_attr_srp);
+       error = device_create_file(&dev->dev, &dev_attr_buspower);
+       error = device_create_file(&dev->dev, &dev_attr_bussuspend);
+       error = device_create_file(&dev->dev, &dev_attr_mode_ch_tim_en);
+       error = device_create_file(&dev->dev, &dev_attr_fr_interval);
+       error = device_create_file(&dev->dev, &dev_attr_busconnected);
+       error = device_create_file(&dev->dev, &dev_attr_gotgctl);
+       error = device_create_file(&dev->dev, &dev_attr_gusbcfg);
+       error = device_create_file(&dev->dev, &dev_attr_grxfsiz);
+       error = device_create_file(&dev->dev, &dev_attr_gnptxfsiz);
+       error = device_create_file(&dev->dev, &dev_attr_gpvndctl);
+       error = device_create_file(&dev->dev, &dev_attr_ggpio);
+       error = device_create_file(&dev->dev, &dev_attr_guid);
+       error = device_create_file(&dev->dev, &dev_attr_gsnpsid);
+       error = device_create_file(&dev->dev, &dev_attr_devspeed);
+       error = device_create_file(&dev->dev, &dev_attr_enumspeed);
+       error = device_create_file(&dev->dev, &dev_attr_hptxfsiz);
+       error = device_create_file(&dev->dev, &dev_attr_hprt0);
+       error = device_create_file(&dev->dev, &dev_attr_remote_wakeup);
+       error = device_create_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
+       error = device_create_file(&dev->dev, &dev_attr_disconnect_us);
+       error = device_create_file(&dev->dev, &dev_attr_regdump);
+       error = device_create_file(&dev->dev, &dev_attr_spramdump);
+       error = device_create_file(&dev->dev, &dev_attr_hcddump);
+       error = device_create_file(&dev->dev, &dev_attr_hcd_frrem);
+       error = device_create_file(&dev->dev, &dev_attr_rd_reg_test);
+       error = device_create_file(&dev->dev, &dev_attr_wr_reg_test);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       error = device_create_file(&dev->dev, &dev_attr_lpm_response);
+       error = device_create_file(&dev->dev, &dev_attr_sleep_status);
+#endif
+}
+
+/**
+ * Remove the device files
+ */
+void dwc_otg_attr_remove(
+#ifdef LM_INTERFACE
+       struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+       struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *dev
+#endif
+    )
+{
+       device_remove_file(&dev->dev, &dev_attr_regoffset);
+       device_remove_file(&dev->dev, &dev_attr_regvalue);
+       device_remove_file(&dev->dev, &dev_attr_mode);
+       device_remove_file(&dev->dev, &dev_attr_hnpcapable);
+       device_remove_file(&dev->dev, &dev_attr_srpcapable);
+       device_remove_file(&dev->dev, &dev_attr_hsic_connect);
+       device_remove_file(&dev->dev, &dev_attr_inv_sel_hsic);
+       device_remove_file(&dev->dev, &dev_attr_hnp);
+       device_remove_file(&dev->dev, &dev_attr_srp);
+       device_remove_file(&dev->dev, &dev_attr_buspower);
+       device_remove_file(&dev->dev, &dev_attr_bussuspend);
+       device_remove_file(&dev->dev, &dev_attr_mode_ch_tim_en);
+       device_remove_file(&dev->dev, &dev_attr_fr_interval);
+       device_remove_file(&dev->dev, &dev_attr_busconnected);
+       device_remove_file(&dev->dev, &dev_attr_gotgctl);
+       device_remove_file(&dev->dev, &dev_attr_gusbcfg);
+       device_remove_file(&dev->dev, &dev_attr_grxfsiz);
+       device_remove_file(&dev->dev, &dev_attr_gnptxfsiz);
+       device_remove_file(&dev->dev, &dev_attr_gpvndctl);
+       device_remove_file(&dev->dev, &dev_attr_ggpio);
+       device_remove_file(&dev->dev, &dev_attr_guid);
+       device_remove_file(&dev->dev, &dev_attr_gsnpsid);
+       device_remove_file(&dev->dev, &dev_attr_devspeed);
+       device_remove_file(&dev->dev, &dev_attr_enumspeed);
+       device_remove_file(&dev->dev, &dev_attr_hptxfsiz);
+       device_remove_file(&dev->dev, &dev_attr_hprt0);
+       device_remove_file(&dev->dev, &dev_attr_remote_wakeup);
+       device_remove_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
+       device_remove_file(&dev->dev, &dev_attr_disconnect_us);
+       device_remove_file(&dev->dev, &dev_attr_regdump);
+       device_remove_file(&dev->dev, &dev_attr_spramdump);
+       device_remove_file(&dev->dev, &dev_attr_hcddump);
+       device_remove_file(&dev->dev, &dev_attr_hcd_frrem);
+       device_remove_file(&dev->dev, &dev_attr_rd_reg_test);
+       device_remove_file(&dev->dev, &dev_attr_wr_reg_test);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       device_remove_file(&dev->dev, &dev_attr_lpm_response);
+       device_remove_file(&dev->dev, &dev_attr_sleep_status);
+#endif
+}
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_attr.h b/drivers/usb/host/dwc_otg/dwc_otg_attr.h
new file mode 100644
index 0000000..fc14d94
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_attr.h
@@ -0,0 +1,89 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.h $
+ * $Revision: #13 $
+ * $Date: 2010/06/21 $
+ * $Change: 1532021 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_ATTR_H__)
+#define __DWC_OTG_ATTR_H__
+
+/** @file
+ * This file contains the interface to the Linux device attributes.
+ */
+extern struct device_attribute dev_attr_regoffset;
+extern struct device_attribute dev_attr_regvalue;
+
+extern struct device_attribute dev_attr_mode;
+extern struct device_attribute dev_attr_hnpcapable;
+extern struct device_attribute dev_attr_srpcapable;
+extern struct device_attribute dev_attr_hnp;
+extern struct device_attribute dev_attr_srp;
+extern struct device_attribute dev_attr_buspower;
+extern struct device_attribute dev_attr_bussuspend;
+extern struct device_attribute dev_attr_mode_ch_tim_en;
+extern struct device_attribute dev_attr_fr_interval;
+extern struct device_attribute dev_attr_busconnected;
+extern struct device_attribute dev_attr_gotgctl;
+extern struct device_attribute dev_attr_gusbcfg;
+extern struct device_attribute dev_attr_grxfsiz;
+extern struct device_attribute dev_attr_gnptxfsiz;
+extern struct device_attribute dev_attr_gpvndctl;
+extern struct device_attribute dev_attr_ggpio;
+extern struct device_attribute dev_attr_guid;
+extern struct device_attribute dev_attr_gsnpsid;
+extern struct device_attribute dev_attr_devspeed;
+extern struct device_attribute dev_attr_enumspeed;
+extern struct device_attribute dev_attr_hptxfsiz;
+extern struct device_attribute dev_attr_hprt0;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+extern struct device_attribute dev_attr_lpm_response;
+extern struct device_attribute devi_attr_sleep_status;
+#endif
+
+void dwc_otg_attr_create(
+#ifdef LM_INTERFACE
+                               struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+                               struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *dev
+#endif
+    );
+
+void dwc_otg_attr_remove(
+#ifdef LM_INTERFACE
+                               struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+                               struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *dev
+#endif
+    );
+#endif
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_cfi.c b/drivers/usb/host/dwc_otg/dwc_otg_cfi.c
new file mode 100644
index 0000000..a9878d6
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_cfi.c
@@ -0,0 +1,1876 @@
+/* ==========================================================================
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file 
+ *
+ * This file contains the most of the CFI(Core Feature Interface) 
+ * implementation for the OTG. 
+ */
+
+#ifdef DWC_UTE_CFI
+
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_cfi.h"
+
+/** This definition should actually migrate to the Portability Library */
+#define DWC_CONSTANT_CPU_TO_LE16(x) (x)
+
+extern dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * pcd, u16 wIndex);
+
+static int cfi_core_features_buf(uint8_t * buf, uint16_t buflen);
+static int cfi_get_feature_value(uint8_t * buf, uint16_t buflen,
+                                struct dwc_otg_pcd *pcd,
+                                struct cfi_usb_ctrlrequest *ctrl_req);
+static int cfi_set_feature_value(struct dwc_otg_pcd *pcd);
+static int cfi_ep_get_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+                            struct cfi_usb_ctrlrequest *req);
+static int cfi_ep_get_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+                                struct cfi_usb_ctrlrequest *req);
+static int cfi_ep_get_align_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+                               struct cfi_usb_ctrlrequest *req);
+static int cfi_preproc_reset(struct dwc_otg_pcd *pcd,
+                            struct cfi_usb_ctrlrequest *req);
+static void cfi_free_ep_bs_dyn_data(cfi_ep_t * cfiep);
+
+static uint16_t get_dfifo_size(dwc_otg_core_if_t * core_if);
+static int32_t get_rxfifo_size(dwc_otg_core_if_t * core_if, uint16_t wValue);
+static int32_t get_txfifo_size(struct dwc_otg_pcd *pcd, uint16_t wValue);
+
+static uint8_t resize_fifos(dwc_otg_core_if_t * core_if);
+
+/** This is the header of the all features descriptor */
+static cfi_all_features_header_t all_props_desc_header = {
+       .wVersion = DWC_CONSTANT_CPU_TO_LE16(0x100),
+       .wCoreID = DWC_CONSTANT_CPU_TO_LE16(CFI_CORE_ID_OTG),
+       .wNumFeatures = DWC_CONSTANT_CPU_TO_LE16(9),
+};
+
+/** This is an array of statically allocated feature descriptors */
+static cfi_feature_desc_header_t prop_descs[] = {
+
+       /* FT_ID_DMA_MODE */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_MODE),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(1),
+        },
+
+       /* FT_ID_DMA_BUFFER_SETUP */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_BUFFER_SETUP),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
+        },
+
+       /* FT_ID_DMA_BUFF_ALIGN */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_BUFF_ALIGN),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+        },
+
+       /* FT_ID_DMA_CONCAT_SETUP */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_CONCAT_SETUP),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        //.wDataLength  = DWC_CONSTANT_CPU_TO_LE16(6),
+        },
+
+       /* FT_ID_DMA_CIRCULAR */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_CIRCULAR),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
+        },
+
+       /* FT_ID_THRESHOLD_SETUP */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_THRESHOLD_SETUP),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
+        },
+
+       /* FT_ID_DFIFO_DEPTH */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DFIFO_DEPTH),
+        .bmAttributes = CFI_FEATURE_ATTR_RO,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+        },
+
+       /* FT_ID_TX_FIFO_DEPTH */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_TX_FIFO_DEPTH),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+        },
+
+       /* FT_ID_RX_FIFO_DEPTH */
+       {
+        .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_RX_FIFO_DEPTH),
+        .bmAttributes = CFI_FEATURE_ATTR_RW,
+        .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+        }
+};
+
+/** The table of feature names */
+cfi_string_t prop_name_table[] = {
+       {FT_ID_DMA_MODE, "dma_mode"},
+       {FT_ID_DMA_BUFFER_SETUP, "buffer_setup"},
+       {FT_ID_DMA_BUFF_ALIGN, "buffer_align"},
+       {FT_ID_DMA_CONCAT_SETUP, "concat_setup"},
+       {FT_ID_DMA_CIRCULAR, "buffer_circular"},
+       {FT_ID_THRESHOLD_SETUP, "threshold_setup"},
+       {FT_ID_DFIFO_DEPTH, "dfifo_depth"},
+       {FT_ID_TX_FIFO_DEPTH, "txfifo_depth"},
+       {FT_ID_RX_FIFO_DEPTH, "rxfifo_depth"},
+       {}
+};
+
+/************************************************************************/
+
+/** 
+ * Returns the name of the feature by its ID 
+ * or NULL if no featute ID matches.
+ * 
+ */
+const uint8_t *get_prop_name(uint16_t prop_id, int *len)
+{
+       cfi_string_t *pstr;
+       *len = 0;
+
+       for (pstr = prop_name_table; pstr && pstr->s; pstr++) {
+               if (pstr->id == prop_id) {
+                       *len = DWC_STRLEN(pstr->s);
+                       return pstr->s;
+               }
+       }
+       return NULL;
+}
+
+/**
+ * This function handles all CFI specific control requests.
+ * 
+ * Return a negative value to stall the DCE.
+ */
+int cfi_setup(struct dwc_otg_pcd *pcd, struct cfi_usb_ctrlrequest *ctrl)
+{
+       int retval = 0;
+       dwc_otg_pcd_ep_t *ep = NULL;
+       cfiobject_t *cfi = pcd->cfi;
+       struct dwc_otg_core_if *coreif = GET_CORE_IF(pcd);
+       uint16_t wLen = DWC_LE16_TO_CPU(&ctrl->wLength);
+       uint16_t wValue = DWC_LE16_TO_CPU(&ctrl->wValue);
+       uint16_t wIndex = DWC_LE16_TO_CPU(&ctrl->wIndex);
+       uint32_t regaddr = 0;
+       uint32_t regval = 0;
+
+       /* Save this Control Request in the CFI object. 
+        * The data field will be assigned in the data stage completion CB function.
+        */
+       cfi->ctrl_req = *ctrl;
+       cfi->ctrl_req.data = NULL;
+
+       cfi->need_gadget_att = 0;
+       cfi->need_status_in_complete = 0;
+
+       switch (ctrl->bRequest) {
+       case VEN_CORE_GET_FEATURES:
+               retval = cfi_core_features_buf(cfi->buf_in.buf, CFI_IN_BUF_LEN);
+               if (retval >= 0) {
+                       //dump_msg(cfi->buf_in.buf, retval);
+                       ep = &pcd->ep0;
+
+                       retval = min((uint16_t) retval, wLen);
+                       /* Transfer this buffer to the host through the EP0-IN EP */
+                       ep->dwc_ep.dma_addr = cfi->buf_in.addr;
+                       ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
+                       ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
+                       ep->dwc_ep.xfer_len = retval;
+                       ep->dwc_ep.xfer_count = 0;
+                       ep->dwc_ep.sent_zlp = 0;
+                       ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+                       pcd->ep0_pending = 1;
+                       dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+               }
+               retval = 0;
+               break;
+
+       case VEN_CORE_GET_FEATURE:
+               CFI_INFO("VEN_CORE_GET_FEATURE\n");
+               retval = cfi_get_feature_value(cfi->buf_in.buf, CFI_IN_BUF_LEN,
+                                              pcd, ctrl);
+               if (retval >= 0) {
+                       ep = &pcd->ep0;
+
+                       retval = min((uint16_t) retval, wLen);
+                       /* Transfer this buffer to the host through the EP0-IN EP */
+                       ep->dwc_ep.dma_addr = cfi->buf_in.addr;
+                       ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
+                       ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
+                       ep->dwc_ep.xfer_len = retval;
+                       ep->dwc_ep.xfer_count = 0;
+                       ep->dwc_ep.sent_zlp = 0;
+                       ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+                       pcd->ep0_pending = 1;
+                       dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+               }
+               CFI_INFO("VEN_CORE_GET_FEATURE=%d\n", retval);
+               dump_msg(cfi->buf_in.buf, retval);
+               break;
+
+       case VEN_CORE_SET_FEATURE:
+               CFI_INFO("VEN_CORE_SET_FEATURE\n");
+               /* Set up an XFER to get the data stage of the control request,
+                * which is the new value of the feature to be modified.
+                */
+               ep = &pcd->ep0;
+               ep->dwc_ep.is_in = 0;
+               ep->dwc_ep.dma_addr = cfi->buf_out.addr;
+               ep->dwc_ep.start_xfer_buff = cfi->buf_out.buf;
+               ep->dwc_ep.xfer_buff = cfi->buf_out.buf;
+               ep->dwc_ep.xfer_len = wLen;
+               ep->dwc_ep.xfer_count = 0;
+               ep->dwc_ep.sent_zlp = 0;
+               ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+               pcd->ep0_pending = 1;
+               /* Read the control write's data stage */
+               dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+               retval = 0;
+               break;
+
+       case VEN_CORE_RESET_FEATURES:
+               CFI_INFO("VEN_CORE_RESET_FEATURES\n");
+               cfi->need_gadget_att = 1;
+               cfi->need_status_in_complete = 1;
+               retval = cfi_preproc_reset(pcd, ctrl);
+               CFI_INFO("VEN_CORE_RESET_FEATURES = (%d)\n", retval);
+               break;
+
+       case VEN_CORE_ACTIVATE_FEATURES:
+               CFI_INFO("VEN_CORE_ACTIVATE_FEATURES\n");
+               break;
+
+       case VEN_CORE_READ_REGISTER:
+               CFI_INFO("VEN_CORE_READ_REGISTER\n");
+               /* wValue optionally contains the HI WORD of the register offset and
+                * wIndex contains the LOW WORD of the register offset 
+                */
+               if (wValue == 0) {
+                       /* @TODO - MAS - fix the access to the base field */
+                       regaddr = 0;
+                       //regaddr = (uint32_t) pcd->otg_dev->os_dep.base;
+                       //GET_CORE_IF(pcd)->co
+                       regaddr |= wIndex;
+               } else {
+                       regaddr = (wValue << 16) | wIndex;
+               }
+
+               /* Read a 32-bit value of the memory at the regaddr */
+               regval = DWC_READ_REG32((uint32_t *) regaddr);
+
+               ep = &pcd->ep0;
+               dwc_memcpy(cfi->buf_in.buf, &regval, sizeof(uint32_t));
+               ep->dwc_ep.is_in = 1;
+               ep->dwc_ep.dma_addr = cfi->buf_in.addr;
+               ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
+               ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
+               ep->dwc_ep.xfer_len = wLen;
+               ep->dwc_ep.xfer_count = 0;
+               ep->dwc_ep.sent_zlp = 0;
+               ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+               pcd->ep0_pending = 1;
+               dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+               cfi->need_gadget_att = 0;
+               retval = 0;
+               break;
+
+       case VEN_CORE_WRITE_REGISTER:
+               CFI_INFO("VEN_CORE_WRITE_REGISTER\n");
+               /* Set up an XFER to get the data stage of the control request,
+                * which is the new value of the register to be modified.
+                */
+               ep = &pcd->ep0;
+               ep->dwc_ep.is_in = 0;
+               ep->dwc_ep.dma_addr = cfi->buf_out.addr;
+               ep->dwc_ep.start_xfer_buff = cfi->buf_out.buf;
+               ep->dwc_ep.xfer_buff = cfi->buf_out.buf;
+               ep->dwc_ep.xfer_len = wLen;
+               ep->dwc_ep.xfer_count = 0;
+               ep->dwc_ep.sent_zlp = 0;
+               ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+               pcd->ep0_pending = 1;
+               /* Read the control write's data stage */
+               dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+               retval = 0;
+               break;
+
+       default:
+               retval = -DWC_E_NOT_SUPPORTED;
+               break;
+       }
+
+       return retval;
+}
+
+/**
+ * This function prepares the core features descriptors and copies its
+ * raw representation into the buffer <buf>.
+ * 
+ * The buffer structure is as follows:
+ *     all_features_header (8 bytes)
+ *     features_#1 (8 bytes + feature name string length)
+ *     features_#2 (8 bytes + feature name string length)
+ *     .....
+ *     features_#n - where n=the total count of feature descriptors
+ */
+static int cfi_core_features_buf(uint8_t * buf, uint16_t buflen)
+{
+       cfi_feature_desc_header_t *prop_hdr = prop_descs;
+       cfi_feature_desc_header_t *prop;
+       cfi_all_features_header_t *all_props_hdr = &all_props_desc_header;
+       cfi_all_features_header_t *tmp;
+       uint8_t *tmpbuf = buf;
+       const uint8_t *pname = NULL;
+       int i, j, namelen = 0, totlen;
+
+       /* Prepare and copy the core features into the buffer */
+       CFI_INFO("%s:\n", __func__);
+
+       tmp = (cfi_all_features_header_t *) tmpbuf;
+       *tmp = *all_props_hdr;
+       tmpbuf += CFI_ALL_FEATURES_HDR_LEN;
+
+       j = sizeof(prop_descs) / sizeof(cfi_all_features_header_t);
+       for (i = 0; i < j; i++, prop_hdr++) {
+               pname = get_prop_name(prop_hdr->wFeatureID, &namelen);
+               prop = (cfi_feature_desc_header_t *) tmpbuf;
+               *prop = *prop_hdr;
+
+               prop->bNameLen = namelen;
+               prop->wLength =
+                   DWC_CONSTANT_CPU_TO_LE16(CFI_FEATURE_DESC_HDR_LEN +
+                                            namelen);
+
+               tmpbuf += CFI_FEATURE_DESC_HDR_LEN;
+               dwc_memcpy(tmpbuf, pname, namelen);
+               tmpbuf += namelen;
+       }
+
+       totlen = tmpbuf - buf;
+
+       if (totlen > 0) {
+               tmp = (cfi_all_features_header_t *) buf;
+               tmp->wTotalLen = DWC_CONSTANT_CPU_TO_LE16(totlen);
+       }
+
+       return totlen;
+}
+
+/**
+ * This function releases all the dynamic memory in the CFI object.
+ */
+static void cfi_release(cfiobject_t * cfiobj)
+{
+       cfi_ep_t *cfiep;
+       dwc_list_link_t *tmp;
+
+       CFI_INFO("%s\n", __func__);
+
+       if (cfiobj->buf_in.buf) {
+               DWC_DMA_FREE(CFI_IN_BUF_LEN, cfiobj->buf_in.buf,
+                            cfiobj->buf_in.addr);
+               cfiobj->buf_in.buf = NULL;
+       }
+
+       if (cfiobj->buf_out.buf) {
+               DWC_DMA_FREE(CFI_OUT_BUF_LEN, cfiobj->buf_out.buf,
+                            cfiobj->buf_out.addr);
+               cfiobj->buf_out.buf = NULL;
+       }
+
+       /* Free the Buffer Setup values for each EP */
+       //list_for_each_entry(cfiep, &cfiobj->active_eps, lh) {
+       DWC_LIST_FOREACH(tmp, &cfiobj->active_eps) {
+               cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+               cfi_free_ep_bs_dyn_data(cfiep);
+       }
+}
+
+/**
+ * This function frees the dynamically allocated EP buffer setup data.
+ */
+static void cfi_free_ep_bs_dyn_data(cfi_ep_t * cfiep)
+{
+       if (cfiep->bm_sg) {
+               DWC_FREE(cfiep->bm_sg);
+               cfiep->bm_sg = NULL;
+       }
+
+       if (cfiep->bm_align) {
+               DWC_FREE(cfiep->bm_align);
+               cfiep->bm_align = NULL;
+       }
+
+       if (cfiep->bm_concat) {
+               if (NULL != cfiep->bm_concat->wTxBytes) {
+                       DWC_FREE(cfiep->bm_concat->wTxBytes);
+                       cfiep->bm_concat->wTxBytes = NULL;
+               }
+               DWC_FREE(cfiep->bm_concat);
+               cfiep->bm_concat = NULL;
+       }
+}
+
+/**
+ * This function initializes the default values of the features
+ * for a specific endpoint and should be called only once when
+ * the EP is enabled first time.
+ */
+static int cfi_ep_init_defaults(struct dwc_otg_pcd *pcd, cfi_ep_t * cfiep)
+{
+       int retval = 0;
+
+       cfiep->bm_sg = DWC_ALLOC(sizeof(ddma_sg_buffer_setup_t));
+       if (NULL == cfiep->bm_sg) {
+               CFI_INFO("Failed to allocate memory for SG feature value\n");
+               return -DWC_E_NO_MEMORY;
+       }
+       dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
+
+       /* For the Concatenation feature's default value we do not allocate
+        * memory for the wTxBytes field - it will be done in the set_feature_value
+        * request handler.
+        */
+       cfiep->bm_concat = DWC_ALLOC(sizeof(ddma_concat_buffer_setup_t));
+       if (NULL == cfiep->bm_concat) {
+               CFI_INFO
+                   ("Failed to allocate memory for CONCATENATION feature value\n");
+               DWC_FREE(cfiep->bm_sg);
+               return -DWC_E_NO_MEMORY;
+       }
+       dwc_memset(cfiep->bm_concat, 0, sizeof(ddma_concat_buffer_setup_t));
+
+       cfiep->bm_align = DWC_ALLOC(sizeof(ddma_align_buffer_setup_t));
+       if (NULL == cfiep->bm_align) {
+               CFI_INFO
+                   ("Failed to allocate memory for Alignment feature value\n");
+               DWC_FREE(cfiep->bm_sg);
+               DWC_FREE(cfiep->bm_concat);
+               return -DWC_E_NO_MEMORY;
+       }
+       dwc_memset(cfiep->bm_align, 0, sizeof(ddma_align_buffer_setup_t));
+
+       return retval;
+}
+
+/**
+ * The callback function that notifies the CFI on the activation of
+ * an endpoint in the PCD. The following steps are done in this function:
+ *
+ *     Create a dynamically allocated cfi_ep_t object (a CFI wrapper to the PCD's 
+ *             active endpoint)
+ *     Create MAX_DMA_DESCS_PER_EP count DMA Descriptors for the EP
+ *     Set the Buffer Mode to standard
+ *     Initialize the default values for all EP modes (SG, Circular, Concat, Align)
+ *     Add the cfi_ep_t object to the list of active endpoints in the CFI object
+ */
+static int cfi_ep_enable(struct cfiobject *cfi, struct dwc_otg_pcd *pcd,
+                        struct dwc_otg_pcd_ep *ep)
+{
+       cfi_ep_t *cfiep;
+       int retval = -DWC_E_NOT_SUPPORTED;
+
+       CFI_INFO("%s: epname=%s; epnum=0x%02x\n", __func__,
+                "EP_" /*ep->ep.name */ , ep->desc->bEndpointAddress);
+       /* MAS - Check whether this endpoint already is in the list */
+       cfiep = get_cfi_ep_by_pcd_ep(cfi, ep);
+
+       if (NULL == cfiep) {
+               /* Allocate a cfi_ep_t object */
+               cfiep = DWC_ALLOC(sizeof(cfi_ep_t));
+               if (NULL == cfiep) {
+                       CFI_INFO
+                           ("Unable to allocate memory for <cfiep> in function %s\n",
+                            __func__);
+                       return -DWC_E_NO_MEMORY;
+               }
+               dwc_memset(cfiep, 0, sizeof(cfi_ep_t));
+
+               /* Save the dwc_otg_pcd_ep pointer in the cfiep object */
+               cfiep->ep = ep;
+
+               /* Allocate the DMA Descriptors chain of MAX_DMA_DESCS_PER_EP count */
+               ep->dwc_ep.descs =
+                   DWC_DMA_ALLOC(MAX_DMA_DESCS_PER_EP *
+                                 sizeof(dwc_otg_dma_desc_t),
+                                 &ep->dwc_ep.descs_dma_addr);
+
+               if (NULL == ep->dwc_ep.descs) {
+                       DWC_FREE(cfiep);
+                       return -DWC_E_NO_MEMORY;
+               }
+
+               DWC_LIST_INIT(&cfiep->lh);
+
+               /* Set the buffer mode to BM_STANDARD. It will be modified 
+                * when building descriptors for a specific buffer mode */
+               ep->dwc_ep.buff_mode = BM_STANDARD;
+
+               /* Create and initialize the default values for this EP's Buffer modes */
+               if ((retval = cfi_ep_init_defaults(pcd, cfiep)) < 0)
+                       return retval;
+
+               /* Add the cfi_ep_t object to the CFI object's list of active endpoints */
+               DWC_LIST_INSERT_TAIL(&cfi->active_eps, &cfiep->lh);
+               retval = 0;
+       } else {                /* The sought EP already is in the list */
+               CFI_INFO("%s: The sought EP already is in the list\n",
+                        __func__);
+       }
+
+       return retval;
+}
+
+/**
+ * This function is called when the data stage of a 3-stage Control Write request
+ * is complete.
+ * 
+ */
+static int cfi_ctrl_write_complete(struct cfiobject *cfi,
+                                  struct dwc_otg_pcd *pcd)
+{
+       uint32_t addr, reg_value;
+       uint16_t wIndex, wValue;
+       uint8_t bRequest;
+       uint8_t *buf = cfi->buf_out.buf;
+       //struct usb_ctrlrequest *ctrl_req = &cfi->ctrl_req_saved;
+       struct cfi_usb_ctrlrequest *ctrl_req = &cfi->ctrl_req;
+       int retval = -DWC_E_NOT_SUPPORTED;
+
+       CFI_INFO("%s\n", __func__);
+
+       bRequest = ctrl_req->bRequest;
+       wIndex = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wIndex);
+       wValue = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wValue);
+
+       /* 
+        * Save the pointer to the data stage in the ctrl_req's <data> field.
+        * The request should be already saved in the command stage by now.
+        */
+       ctrl_req->data = cfi->buf_out.buf;
+       cfi->need_status_in_complete = 0;
+       cfi->need_gadget_att = 0;
+
+       switch (bRequest) {
+       case VEN_CORE_WRITE_REGISTER:
+               /* The buffer contains raw data of the new value for the register */
+               reg_value = *((uint32_t *) buf);
+               if (wValue == 0) {
+                       addr = 0;
+                       //addr = (uint32_t) pcd->otg_dev->os_dep.base;
+                       addr += wIndex;
+               } else {
+                       addr = (wValue << 16) | wIndex;
+               }
+
+               //writel(reg_value, addr);
+
+               retval = 0;
+               cfi->need_status_in_complete = 1;
+               break;
+
+       case VEN_CORE_SET_FEATURE:
+               /* The buffer contains raw data of the new value of the feature */
+               retval = cfi_set_feature_value(pcd);
+               if (retval < 0)
+                       return retval;
+
+               cfi->need_status_in_complete = 1;
+               break;
+
+       default:
+               break;
+       }
+
+       return retval;
+}
+
+/**
+ * This function builds the DMA descriptors for the SG buffer mode.
+ */
+static void cfi_build_sg_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+                              dwc_otg_pcd_request_t * req)
+{
+       struct dwc_otg_pcd_ep *ep = cfiep->ep;
+       ddma_sg_buffer_setup_t *sgval = cfiep->bm_sg;
+       struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
+       struct dwc_otg_dma_desc *desc_last = cfiep->ep->dwc_ep.descs;
+       dma_addr_t buff_addr = req->dma;
+       int i;
+       uint32_t txsize, off;
+
+       txsize = sgval->wSize;
+       off = sgval->bOffset;
+
+//      CFI_INFO("%s: %s TXSIZE=0x%08x; OFFSET=0x%08x\n", 
+//              __func__, cfiep->ep->ep.name, txsize, off);
+
+       for (i = 0; i < sgval->bCount; i++) {
+               desc->status.b.bs = BS_HOST_BUSY;
+               desc->buf = buff_addr;
+               desc->status.b.l = 0;
+               desc->status.b.ioc = 0;
+               desc->status.b.sp = 0;
+               desc->status.b.bytes = txsize;
+               desc->status.b.bs = BS_HOST_READY;
+
+               /* Set the next address of the buffer */
+               buff_addr += txsize + off;
+               desc_last = desc;
+               desc++;
+       }
+
+       /* Set the last, ioc and sp bits on the Last DMA Descriptor */
+       desc_last->status.b.l = 1;
+       desc_last->status.b.ioc = 1;
+       desc_last->status.b.sp = ep->dwc_ep.sent_zlp;
+       /* Save the last DMA descriptor pointer */
+       cfiep->dma_desc_last = desc_last;
+       cfiep->desc_count = sgval->bCount;
+}
+
+/**
+ * This function builds the DMA descriptors for the Concatenation buffer mode.
+ */
+static void cfi_build_concat_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+                                  dwc_otg_pcd_request_t * req)
+{
+       struct dwc_otg_pcd_ep *ep = cfiep->ep;
+       ddma_concat_buffer_setup_t *concatval = cfiep->bm_concat;
+       struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
+       struct dwc_otg_dma_desc *desc_last = cfiep->ep->dwc_ep.descs;
+       dma_addr_t buff_addr = req->dma;
+       int i;
+       uint16_t *txsize;
+
+       txsize = concatval->wTxBytes;
+
+       for (i = 0; i < concatval->hdr.bDescCount; i++) {
+               desc->buf = buff_addr;
+               desc->status.b.bs = BS_HOST_BUSY;
+               desc->status.b.l = 0;
+               desc->status.b.ioc = 0;
+               desc->status.b.sp = 0;
+               desc->status.b.bytes = *txsize;
+               desc->status.b.bs = BS_HOST_READY;
+
+               txsize++;
+               /* Set the next address of the buffer */
+               buff_addr += UGETW(ep->desc->wMaxPacketSize);
+               desc_last = desc;
+               desc++;
+       }
+
+       /* Set the last, ioc and sp bits on the Last DMA Descriptor */
+       desc_last->status.b.l = 1;
+       desc_last->status.b.ioc = 1;
+       desc_last->status.b.sp = ep->dwc_ep.sent_zlp;
+       cfiep->dma_desc_last = desc_last;
+       cfiep->desc_count = concatval->hdr.bDescCount;
+}
+
+/**
+ * This function builds the DMA descriptors for the Circular buffer mode
+ */
+static void cfi_build_circ_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+                                dwc_otg_pcd_request_t * req)
+{
+       /* @todo: MAS - add implementation when this feature needs to be tested */
+}
+
+/**
+ * This function builds the DMA descriptors for the Alignment buffer mode
+ */
+static void cfi_build_align_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+                                 dwc_otg_pcd_request_t * req)
+{
+       struct dwc_otg_pcd_ep *ep = cfiep->ep;
+       ddma_align_buffer_setup_t *alignval = cfiep->bm_align;
+       struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
+       dma_addr_t buff_addr = req->dma;
+
+       desc->status.b.bs = BS_HOST_BUSY;
+       desc->status.b.l = 1;
+       desc->status.b.ioc = 1;
+       desc->status.b.sp = ep->dwc_ep.sent_zlp;
+       desc->status.b.bytes = req->length;
+       /* Adjust the buffer alignment */
+       desc->buf = (buff_addr + alignval->bAlign);
+       desc->status.b.bs = BS_HOST_READY;
+       cfiep->dma_desc_last = desc;
+       cfiep->desc_count = 1;
+}
+
+/**
+ * This function builds the DMA descriptors chain for different modes of the
+ * buffer setup of an endpoint.
+ */
+static void cfi_build_descriptors(struct cfiobject *cfi,
+                                 struct dwc_otg_pcd *pcd,
+                                 struct dwc_otg_pcd_ep *ep,
+                                 dwc_otg_pcd_request_t * req)
+{
+       cfi_ep_t *cfiep;
+
+       /* Get the cfiep by the dwc_otg_pcd_ep */
+       cfiep = get_cfi_ep_by_pcd_ep(cfi, ep);
+       if (NULL == cfiep) {
+               CFI_INFO("%s: Unable to find a matching active endpoint\n",
+                        __func__);
+               return;
+       }
+
+       cfiep->xfer_len = req->length;
+
+       /* Iterate through all the DMA descriptors */
+       switch (cfiep->ep->dwc_ep.buff_mode) {
+       case BM_SG:
+               cfi_build_sg_descs(cfi, cfiep, req);
+               break;
+
+       case BM_CONCAT:
+               cfi_build_concat_descs(cfi, cfiep, req);
+               break;
+
+       case BM_CIRCULAR:
+               cfi_build_circ_descs(cfi, cfiep, req);
+               break;
+
+       case BM_ALIGN:
+               cfi_build_align_descs(cfi, cfiep, req);
+               break;
+
+       default:
+               break;
+       }
+}
+
+/**
+ * Allocate DMA buffer for different Buffer modes.
+ */
+static void *cfi_ep_alloc_buf(struct cfiobject *cfi, struct dwc_otg_pcd *pcd,
+                             struct dwc_otg_pcd_ep *ep, dma_addr_t * dma,
+                             unsigned size, gfp_t flags)
+{
+       return DWC_DMA_ALLOC(size, dma);
+}
+
+/**
+ * This function initializes the CFI object.
+ */
+int init_cfi(cfiobject_t * cfiobj)
+{
+       CFI_INFO("%s\n", __func__);
+
+       /* Allocate a buffer for IN XFERs */
+       cfiobj->buf_in.buf =
+           DWC_DMA_ALLOC(CFI_IN_BUF_LEN, &cfiobj->buf_in.addr);
+       if (NULL == cfiobj->buf_in.buf) {
+               CFI_INFO("Unable to allocate buffer for INs\n");
+               return -DWC_E_NO_MEMORY;
+       }
+
+       /* Allocate a buffer for OUT XFERs */
+       cfiobj->buf_out.buf =
+           DWC_DMA_ALLOC(CFI_OUT_BUF_LEN, &cfiobj->buf_out.addr);
+       if (NULL == cfiobj->buf_out.buf) {
+               CFI_INFO("Unable to allocate buffer for OUT\n");
+               return -DWC_E_NO_MEMORY;
+       }
+
+       /* Initialize the callback function pointers */
+       cfiobj->ops.release = cfi_release;
+       cfiobj->ops.ep_enable = cfi_ep_enable;
+       cfiobj->ops.ctrl_write_complete = cfi_ctrl_write_complete;
+       cfiobj->ops.build_descriptors = cfi_build_descriptors;
+       cfiobj->ops.ep_alloc_buf = cfi_ep_alloc_buf;
+
+       /* Initialize the list of active endpoints in the CFI object */
+       DWC_LIST_INIT(&cfiobj->active_eps);
+
+       return 0;
+}
+
+/**
+ * This function reads the required feature's current value into the buffer
+ *
+ * @retval: Returns negative as error, or the data length of the feature  
+ */
+static int cfi_get_feature_value(uint8_t * buf, uint16_t buflen,
+                                struct dwc_otg_pcd *pcd,
+                                struct cfi_usb_ctrlrequest *ctrl_req)
+{
+       int retval = -DWC_E_NOT_SUPPORTED;
+       struct dwc_otg_core_if *coreif = GET_CORE_IF(pcd);
+       uint16_t dfifo, rxfifo, txfifo;
+
+       switch (ctrl_req->wIndex) {
+               /* Whether the DDMA is enabled or not */
+       case FT_ID_DMA_MODE:
+               *buf = (coreif->dma_enable && coreif->dma_desc_enable) ? 1 : 0;
+               retval = 1;
+               break;
+
+       case FT_ID_DMA_BUFFER_SETUP:
+               retval = cfi_ep_get_sg_val(buf, pcd, ctrl_req);
+               break;
+
+       case FT_ID_DMA_BUFF_ALIGN:
+               retval = cfi_ep_get_align_val(buf, pcd, ctrl_req);
+               break;
+
+       case FT_ID_DMA_CONCAT_SETUP:
+               retval = cfi_ep_get_concat_val(buf, pcd, ctrl_req);
+               break;
+
+       case FT_ID_DMA_CIRCULAR:
+               CFI_INFO("GetFeature value (FT_ID_DMA_CIRCULAR)\n");
+               break;
+
+       case FT_ID_THRESHOLD_SETUP:
+               CFI_INFO("GetFeature value (FT_ID_THRESHOLD_SETUP)\n");
+               break;
+
+       case FT_ID_DFIFO_DEPTH:
+               dfifo = get_dfifo_size(coreif);
+               *((uint16_t *) buf) = dfifo;
+               retval = sizeof(uint16_t);
+               break;
+
+       case FT_ID_TX_FIFO_DEPTH:
+               retval = get_txfifo_size(pcd, ctrl_req->wValue);
+               if (retval >= 0) {
+                       txfifo = retval;
+                       *((uint16_t *) buf) = txfifo;
+                       retval = sizeof(uint16_t);
+               }
+               break;
+
+       case FT_ID_RX_FIFO_DEPTH:
+               retval = get_rxfifo_size(coreif, ctrl_req->wValue);
+               if (retval >= 0) {
+                       rxfifo = retval;
+                       *((uint16_t *) buf) = rxfifo;
+                       retval = sizeof(uint16_t);
+               }
+               break;
+       }
+
+       return retval;
+}
+
+/**
+ * This function resets the SG for the specified EP to its default value
+ */
+static int cfi_reset_sg_val(cfi_ep_t * cfiep)
+{
+       dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
+       return 0;
+}
+
+/**
+ * This function resets the Alignment for the specified EP to its default value
+ */
+static int cfi_reset_align_val(cfi_ep_t * cfiep)
+{
+       dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
+       return 0;
+}
+
+/**
+ * This function resets the Concatenation for the specified EP to its default value
+ * This function will also set the value of the wTxBytes field to NULL after 
+ * freeing the memory previously allocated for this field.
+ */
+static int cfi_reset_concat_val(cfi_ep_t * cfiep)
+{
+       /* First we need to free the wTxBytes field */
+       if (cfiep->bm_concat->wTxBytes) {
+               DWC_FREE(cfiep->bm_concat->wTxBytes);
+               cfiep->bm_concat->wTxBytes = NULL;
+       }
+
+       dwc_memset(cfiep->bm_concat, 0, sizeof(ddma_concat_buffer_setup_t));
+       return 0;
+}
+
+/**
+ * This function resets all the buffer setups of the specified endpoint
+ */
+static int cfi_ep_reset_all_setup_vals(cfi_ep_t * cfiep)
+{
+       cfi_reset_sg_val(cfiep);
+       cfi_reset_align_val(cfiep);
+       cfi_reset_concat_val(cfiep);
+       return 0;
+}
+
+static int cfi_handle_reset_fifo_val(struct dwc_otg_pcd *pcd, uint8_t ep_addr,
+                                    uint8_t rx_rst, uint8_t tx_rst)
+{
+       int retval = -DWC_E_INVALID;
+       uint16_t tx_siz[15];
+       uint16_t rx_siz = 0;
+       dwc_otg_pcd_ep_t *ep = NULL;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
+
+       if (rx_rst) {
+               rx_siz = params->dev_rx_fifo_size;
+               params->dev_rx_fifo_size = GET_CORE_IF(pcd)->init_rxfsiz;
+       }
+
+       if (tx_rst) {
+               if (ep_addr == 0) {
+                       int i;
+
+                       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+                               tx_siz[i] =
+                                   core_if->core_params->dev_tx_fifo_size[i];
+                               core_if->core_params->dev_tx_fifo_size[i] =
+                                   core_if->init_txfsiz[i];
+                       }
+               } else {
+
+                       ep = get_ep_by_addr(pcd, ep_addr);
+
+                       if (NULL == ep) {
+                               CFI_INFO
+                                   ("%s: Unable to get the endpoint addr=0x%02x\n",
+                                    __func__, ep_addr);
+                               return -DWC_E_INVALID;
+                       }
+
+                       tx_siz[0] =
+                           params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num -
+                                                    1];
+                       params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] =
+                           GET_CORE_IF(pcd)->init_txfsiz[ep->
+                                                         dwc_ep.tx_fifo_num -
+                                                         1];
+               }
+       }
+
+       if (resize_fifos(GET_CORE_IF(pcd))) {
+               retval = 0;
+       } else {
+               CFI_INFO
+                   ("%s: Error resetting the feature Reset All(FIFO size)\n",
+                    __func__);
+               if (rx_rst) {
+                       params->dev_rx_fifo_size = rx_siz;
+               }
+
+               if (tx_rst) {
+                       if (ep_addr == 0) {
+                               int i;
+                               for (i = 0; i < core_if->hwcfg4.b.num_in_eps;
+                                    i++) {
+                                       core_if->
+                                           core_params->dev_tx_fifo_size[i] =
+                                           tx_siz[i];
+                               }
+                       } else {
+                               params->dev_tx_fifo_size[ep->
+                                                        dwc_ep.tx_fifo_num -
+                                                        1] = tx_siz[0];
+                       }
+               }
+               retval = -DWC_E_INVALID;
+       }
+       return retval;
+}
+
+static int cfi_handle_reset_all(struct dwc_otg_pcd *pcd, uint8_t addr)
+{
+       int retval = 0;
+       cfi_ep_t *cfiep;
+       cfiobject_t *cfi = pcd->cfi;
+       dwc_list_link_t *tmp;
+
+       retval = cfi_handle_reset_fifo_val(pcd, addr, 1, 1);
+       if (retval < 0) {
+               return retval;
+       }
+
+       /* If the EP address is known then reset the features for only that EP */
+       if (addr) {
+               cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+               if (NULL == cfiep) {
+                       CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+                                __func__, addr);
+                       return -DWC_E_INVALID;
+               }
+               retval = cfi_ep_reset_all_setup_vals(cfiep);
+               cfiep->ep->dwc_ep.buff_mode = BM_STANDARD;
+       }
+       /* Otherwise (wValue == 0), reset all features of all EP's */
+       else {
+               /* Traverse all the active EP's and reset the feature(s) value(s) */
+               //list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+               DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+                       cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+                       retval = cfi_ep_reset_all_setup_vals(cfiep);
+                       cfiep->ep->dwc_ep.buff_mode = BM_STANDARD;
+                       if (retval < 0) {
+                               CFI_INFO
+                                   ("%s: Error resetting the feature Reset All\n",
+                                    __func__);
+                               return retval;
+                       }
+               }
+       }
+       return retval;
+}
+
+static int cfi_handle_reset_dma_buff_setup(struct dwc_otg_pcd *pcd,
+                                          uint8_t addr)
+{
+       int retval = 0;
+       cfi_ep_t *cfiep;
+       cfiobject_t *cfi = pcd->cfi;
+       dwc_list_link_t *tmp;
+
+       /* If the EP address is known then reset the features for only that EP */
+       if (addr) {
+               cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+               if (NULL == cfiep) {
+                       CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+                                __func__, addr);
+                       return -DWC_E_INVALID;
+               }
+               retval = cfi_reset_sg_val(cfiep);
+       }
+       /* Otherwise (wValue == 0), reset all features of all EP's */
+       else {
+               /* Traverse all the active EP's and reset the feature(s) value(s) */
+               //list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+               DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+                       cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+                       retval = cfi_reset_sg_val(cfiep);
+                       if (retval < 0) {
+                               CFI_INFO
+                                   ("%s: Error resetting the feature Buffer Setup\n",
+                                    __func__);
+                               return retval;
+                       }
+               }
+       }
+       return retval;
+}
+
+static int cfi_handle_reset_concat_val(struct dwc_otg_pcd *pcd, uint8_t addr)
+{
+       int retval = 0;
+       cfi_ep_t *cfiep;
+       cfiobject_t *cfi = pcd->cfi;
+       dwc_list_link_t *tmp;
+
+       /* If the EP address is known then reset the features for only that EP */
+       if (addr) {
+               cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+               if (NULL == cfiep) {
+                       CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+                                __func__, addr);
+                       return -DWC_E_INVALID;
+               }
+               retval = cfi_reset_concat_val(cfiep);
+       }
+       /* Otherwise (wValue == 0), reset all features of all EP's */
+       else {
+               /* Traverse all the active EP's and reset the feature(s) value(s) */
+               //list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+               DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+                       cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+                       retval = cfi_reset_concat_val(cfiep);
+                       if (retval < 0) {
+                               CFI_INFO
+                                   ("%s: Error resetting the feature Concatenation Value\n",
+                                    __func__);
+                               return retval;
+                       }
+               }
+       }
+       return retval;
+}
+
+static int cfi_handle_reset_align_val(struct dwc_otg_pcd *pcd, uint8_t addr)
+{
+       int retval = 0;
+       cfi_ep_t *cfiep;
+       cfiobject_t *cfi = pcd->cfi;
+       dwc_list_link_t *tmp;
+
+       /* If the EP address is known then reset the features for only that EP */
+       if (addr) {
+               cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+               if (NULL == cfiep) {
+                       CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+                                __func__, addr);
+                       return -DWC_E_INVALID;
+               }
+               retval = cfi_reset_align_val(cfiep);
+       }
+       /* Otherwise (wValue == 0), reset all features of all EP's */
+       else {
+               /* Traverse all the active EP's and reset the feature(s) value(s) */
+               //list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+               DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+                       cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+                       retval = cfi_reset_align_val(cfiep);
+                       if (retval < 0) {
+                               CFI_INFO
+                                   ("%s: Error resetting the feature Aliignment Value\n",
+                                    __func__);
+                               return retval;
+                       }
+               }
+       }
+       return retval;
+
+}
+
+static int cfi_preproc_reset(struct dwc_otg_pcd *pcd,
+                            struct cfi_usb_ctrlrequest *req)
+{
+       int retval = 0;
+
+       switch (req->wIndex) {
+       case 0:
+               /* Reset all features */
+               retval = cfi_handle_reset_all(pcd, req->wValue & 0xff);
+               break;
+
+       case FT_ID_DMA_BUFFER_SETUP:
+               /* Reset the SG buffer setup */
+               retval =
+                   cfi_handle_reset_dma_buff_setup(pcd, req->wValue & 0xff);
+               break;
+
+       case FT_ID_DMA_CONCAT_SETUP:
+               /* Reset the Concatenation buffer setup */
+               retval = cfi_handle_reset_concat_val(pcd, req->wValue & 0xff);
+               break;
+
+       case FT_ID_DMA_BUFF_ALIGN:
+               /* Reset the Alignment buffer setup */
+               retval = cfi_handle_reset_align_val(pcd, req->wValue & 0xff);
+               break;
+
+       case FT_ID_TX_FIFO_DEPTH:
+               retval =
+                   cfi_handle_reset_fifo_val(pcd, req->wValue & 0xff, 0, 1);
+               pcd->cfi->need_gadget_att = 0;
+               break;
+
+       case FT_ID_RX_FIFO_DEPTH:
+               retval = cfi_handle_reset_fifo_val(pcd, 0, 1, 0);
+               pcd->cfi->need_gadget_att = 0;
+               break;
+       default:
+               break;
+       }
+       return retval;
+}
+
+/**
+ * This function sets a new value for the SG buffer setup.
+ */
+static int cfi_ep_set_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
+{
+       uint8_t inaddr, outaddr;
+       cfi_ep_t *epin, *epout;
+       ddma_sg_buffer_setup_t *psgval;
+       uint32_t desccount, size;
+
+       CFI_INFO("%s\n", __func__);
+
+       psgval = (ddma_sg_buffer_setup_t *) buf;
+       desccount = (uint32_t) psgval->bCount;
+       size = (uint32_t) psgval->wSize;
+
+       /* Check the DMA descriptor count */
+       if ((desccount > MAX_DMA_DESCS_PER_EP) || (desccount == 0)) {
+               CFI_INFO
+                   ("%s: The count of DMA Descriptors should be between 1 and %d\n",
+                    __func__, MAX_DMA_DESCS_PER_EP);
+               return -DWC_E_INVALID;
+       }
+
+       /* Check the DMA descriptor count */
+
+       if (size == 0) {
+
+               CFI_INFO("%s: The transfer size should be at least 1 byte\n",
+                        __func__);
+
+               return -DWC_E_INVALID;
+
+       }
+
+       inaddr = psgval->bInEndpointAddress;
+       outaddr = psgval->bOutEndpointAddress;
+
+       epin = get_cfi_ep_by_addr(pcd->cfi, inaddr);
+       epout = get_cfi_ep_by_addr(pcd->cfi, outaddr);
+
+       if (NULL == epin || NULL == epout) {
+               CFI_INFO
+                   ("%s: Unable to get the endpoints inaddr=0x%02x outaddr=0x%02x\n",
+                    __func__, inaddr, outaddr);
+               return -DWC_E_INVALID;
+       }
+
+       epin->ep->dwc_ep.buff_mode = BM_SG;
+       dwc_memcpy(epin->bm_sg, psgval, sizeof(ddma_sg_buffer_setup_t));
+
+       epout->ep->dwc_ep.buff_mode = BM_SG;
+       dwc_memcpy(epout->bm_sg, psgval, sizeof(ddma_sg_buffer_setup_t));
+
+       return 0;
+}
+
+/**
+ * This function sets a new value for the buffer Alignment setup.
+ */
+static int cfi_ep_set_alignment_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
+{
+       cfi_ep_t *ep;
+       uint8_t addr;
+       ddma_align_buffer_setup_t *palignval;
+
+       palignval = (ddma_align_buffer_setup_t *) buf;
+       addr = palignval->bEndpointAddress;
+
+       ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+                        __func__, addr);
+               return -DWC_E_INVALID;
+       }
+
+       ep->ep->dwc_ep.buff_mode = BM_ALIGN;
+       dwc_memcpy(ep->bm_align, palignval, sizeof(ddma_align_buffer_setup_t));
+
+       return 0;
+}
+
+/**
+ * This function sets a new value for the Concatenation buffer setup.
+ */
+static int cfi_ep_set_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
+{
+       uint8_t addr;
+       cfi_ep_t *ep;
+       struct _ddma_concat_buffer_setup_hdr *pConcatValHdr;
+       uint16_t *pVals;
+       uint32_t desccount;
+       int i;
+       uint16_t mps;
+
+       pConcatValHdr = (struct _ddma_concat_buffer_setup_hdr *)buf;
+       desccount = (uint32_t) pConcatValHdr->bDescCount;
+       pVals = (uint16_t *) (buf + BS_CONCAT_VAL_HDR_LEN);
+
+       /* Check the DMA descriptor count */
+       if (desccount > MAX_DMA_DESCS_PER_EP) {
+               CFI_INFO("%s: Maximum DMA Descriptor count should be %d\n",
+                        __func__, MAX_DMA_DESCS_PER_EP);
+               return -DWC_E_INVALID;
+       }
+
+       addr = pConcatValHdr->bEndpointAddress;
+       ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+                        __func__, addr);
+               return -DWC_E_INVALID;
+       }
+
+       mps = UGETW(ep->ep->desc->wMaxPacketSize);
+
+#if 0
+       for (i = 0; i < desccount; i++) {
+               CFI_INFO("%s: wTxSize[%d]=0x%04x\n", __func__, i, pVals[i]);
+       }
+       CFI_INFO("%s: epname=%s; mps=%d\n", __func__, ep->ep->ep.name, mps);
+#endif
+
+       /* Check the wTxSizes to be less than or equal to the mps */
+       for (i = 0; i < desccount; i++) {
+               if (pVals[i] > mps) {
+                       CFI_INFO
+                           ("%s: ERROR - the wTxSize[%d] should be <= MPS (wTxSize=%d)\n",
+                            __func__, i, pVals[i]);
+                       return -DWC_E_INVALID;
+               }
+       }
+
+       ep->ep->dwc_ep.buff_mode = BM_CONCAT;
+       dwc_memcpy(ep->bm_concat, pConcatValHdr, BS_CONCAT_VAL_HDR_LEN);
+
+       /* Free the previously allocated storage for the wTxBytes */
+       if (ep->bm_concat->wTxBytes) {
+               DWC_FREE(ep->bm_concat->wTxBytes);
+       }
+
+       /* Allocate a new storage for the wTxBytes field */
+       ep->bm_concat->wTxBytes =
+           DWC_ALLOC(sizeof(uint16_t) * pConcatValHdr->bDescCount);
+       if (NULL == ep->bm_concat->wTxBytes) {
+               CFI_INFO("%s: Unable to allocate memory\n", __func__);
+               return -DWC_E_NO_MEMORY;
+       }
+
+       /* Copy the new values into the wTxBytes filed */
+       dwc_memcpy(ep->bm_concat->wTxBytes, buf + BS_CONCAT_VAL_HDR_LEN,
+                  sizeof(uint16_t) * pConcatValHdr->bDescCount);
+
+       return 0;
+}
+
+/**
+ * This function calculates the total of all FIFO sizes
+ * 
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return The total of data FIFO sizes.
+ *
+ */
+static uint16_t get_dfifo_size(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_params_t *params = core_if->core_params;
+       uint16_t dfifo_total = 0;
+       int i;
+
+       /* The shared RxFIFO size */
+       dfifo_total =
+           params->dev_rx_fifo_size + params->dev_nperio_tx_fifo_size;
+
+       /* Add up each TxFIFO size to the total */
+       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+               dfifo_total += params->dev_tx_fifo_size[i];
+       }
+
+       return dfifo_total;
+}
+
+/**
+ * This function returns Rx FIFO size
+ * 
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return The total of data FIFO sizes.
+ *
+ */
+static int32_t get_rxfifo_size(dwc_otg_core_if_t * core_if, uint16_t wValue)
+{
+       switch (wValue >> 8) {
+       case 0:
+               return (core_if->pwron_rxfsiz <
+                       32768) ? core_if->pwron_rxfsiz : 32768;
+               break;
+       case 1:
+               return core_if->core_params->dev_rx_fifo_size;
+               break;
+       default:
+               return -DWC_E_INVALID;
+               break;
+       }
+}
+
+/**
+ * This function returns Tx FIFO size for IN EP
+ * 
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return The total of data FIFO sizes.
+ *
+ */
+static int32_t get_txfifo_size(struct dwc_otg_pcd *pcd, uint16_t wValue)
+{
+       dwc_otg_pcd_ep_t *ep;
+
+       ep = get_ep_by_addr(pcd, wValue & 0xff);
+
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+                        __func__, wValue & 0xff);
+               return -DWC_E_INVALID;
+       }
+
+       if (!ep->dwc_ep.is_in) {
+               CFI_INFO
+                   ("%s: No Tx FIFO assingned to the Out endpoint addr=0x%02x\n",
+                    __func__, wValue & 0xff);
+               return -DWC_E_INVALID;
+       }
+
+       switch (wValue >> 8) {
+       case 0:
+               return (GET_CORE_IF(pcd)->pwron_txfsiz
+                       [ep->dwc_ep.tx_fifo_num - 1] <
+                       768) ? GET_CORE_IF(pcd)->pwron_txfsiz[ep->
+                                                             dwc_ep.tx_fifo_num
+                                                             - 1] : 32768;
+               break;
+       case 1:
+               return GET_CORE_IF(pcd)->core_params->
+                   dev_tx_fifo_size[ep->dwc_ep.num - 1];
+               break;
+       default:
+               return -DWC_E_INVALID;
+               break;
+       }
+}
+
+/**
+ * This function checks if the submitted combination of 
+ * device mode FIFO sizes is possible or not.
+ * 
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return 1 if possible, 0 otherwise.
+ *
+ */
+static uint8_t check_fifo_sizes(dwc_otg_core_if_t * core_if)
+{
+       uint16_t dfifo_actual = 0;
+       dwc_otg_core_params_t *params = core_if->core_params;
+       uint16_t start_addr = 0;
+       int i;
+
+       dfifo_actual =
+           params->dev_rx_fifo_size + params->dev_nperio_tx_fifo_size;
+
+       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+               dfifo_actual += params->dev_tx_fifo_size[i];
+       }
+
+       if (dfifo_actual > core_if->total_fifo_size) {
+               return 0;
+       }
+
+       if (params->dev_rx_fifo_size > 32768 || params->dev_rx_fifo_size < 16)
+               return 0;
+
+       if (params->dev_nperio_tx_fifo_size > 32768
+           || params->dev_nperio_tx_fifo_size < 16)
+               return 0;
+
+       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+
+               if (params->dev_tx_fifo_size[i] > 768
+                   || params->dev_tx_fifo_size[i] < 4)
+                       return 0;
+       }
+
+       if (params->dev_rx_fifo_size > core_if->pwron_rxfsiz)
+               return 0;
+       start_addr = params->dev_rx_fifo_size;
+
+       if (params->dev_nperio_tx_fifo_size > core_if->pwron_gnptxfsiz)
+               return 0;
+       start_addr += params->dev_nperio_tx_fifo_size;
+
+       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+
+               if (params->dev_tx_fifo_size[i] > core_if->pwron_txfsiz[i])
+                       return 0;
+               start_addr += params->dev_tx_fifo_size[i];
+       }
+
+       return 1;
+}
+
+/**
+ * This function resizes Device mode FIFOs
+ * 
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return 1 if successful, 0 otherwise
+ *
+ */
+static uint8_t resize_fifos(dwc_otg_core_if_t * core_if)
+{
+       int i = 0;
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       dwc_otg_core_params_t *params = core_if->core_params;
+       uint32_t rx_fifo_size;
+       fifosize_data_t nptxfifosize;
+       fifosize_data_t txfifosize[15];
+
+       uint32_t rx_fsz_bak;
+       uint32_t nptxfsz_bak;
+       uint32_t txfsz_bak[15];
+
+       uint16_t start_address;
+       uint8_t retval = 1;
+
+       if (!check_fifo_sizes(core_if)) {
+               return 0;
+       }
+
+       /* Configure data FIFO sizes */
+       if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+               rx_fsz_bak = DWC_READ_REG32(&global_regs->grxfsiz);
+               rx_fifo_size = params->dev_rx_fifo_size;
+               DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fifo_size);
+
+               /*
+                * Tx FIFOs These FIFOs are numbered from 1 to 15.
+                * Indexes of the FIFO size module parameters in the
+                * dev_tx_fifo_size array and the FIFO size registers in
+                * the dtxfsiz array run from 0 to 14.
+                */
+
+               /* Non-periodic Tx FIFO */
+               nptxfsz_bak = DWC_READ_REG32(&global_regs->gnptxfsiz);
+               nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+               start_address = params->dev_rx_fifo_size;
+               nptxfifosize.b.startaddr = start_address;
+
+               DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+
+               start_address += nptxfifosize.b.depth;
+
+               for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+                       txfsz_bak[i] = DWC_READ_REG32(&global_regs->dtxfsiz[i]);
+
+                       txfifosize[i].b.depth = params->dev_tx_fifo_size[i];
+                       txfifosize[i].b.startaddr = start_address;
+                       DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+                                       txfifosize[i].d32);
+
+                       start_address += txfifosize[i].b.depth;
+               }
+
+               /** Check if register values are set correctly */
+               if (rx_fifo_size != DWC_READ_REG32(&global_regs->grxfsiz)) {
+                       retval = 0;
+               }
+
+               if (nptxfifosize.d32 != DWC_READ_REG32(&global_regs->gnptxfsiz)) {
+                       retval = 0;
+               }
+
+               for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+                       if (txfifosize[i].d32 !=
+                           DWC_READ_REG32(&global_regs->dtxfsiz[i])) {
+                               retval = 0;
+                       }
+               }
+
+               /** If register values are not set correctly, reset old values */
+               if (retval == 0) {
+                       DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fsz_bak);
+
+                       /* Non-periodic Tx FIFO */
+                       DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfsz_bak);
+
+                       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+                               DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+                                               txfsz_bak[i]);
+                       }
+               }
+       } else {
+               return 0;
+       }
+
+       /* Flush the FIFOs */
+       dwc_otg_flush_tx_fifo(core_if, 0x10);   /* all Tx FIFOs */
+       dwc_otg_flush_rx_fifo(core_if);
+
+       return retval;
+}
+
+/**
+ * This function sets a new value for the buffer Alignment setup.
+ */
+static int cfi_ep_set_tx_fifo_val(uint8_t * buf, dwc_otg_pcd_t * pcd)
+{
+       int retval;
+       uint32_t fsiz;
+       uint16_t size;
+       uint16_t ep_addr;
+       dwc_otg_pcd_ep_t *ep;
+       dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
+       tx_fifo_size_setup_t *ptxfifoval;
+
+       ptxfifoval = (tx_fifo_size_setup_t *) buf;
+       ep_addr = ptxfifoval->bEndpointAddress;
+       size = ptxfifoval->wDepth;
+
+       ep = get_ep_by_addr(pcd, ep_addr);
+
+       CFI_INFO
+           ("%s: Set Tx FIFO size: endpoint addr=0x%02x, depth=%d, FIFO Num=%d\n",
+            __func__, ep_addr, size, ep->dwc_ep.tx_fifo_num);
+
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+                        __func__, ep_addr);
+               return -DWC_E_INVALID;
+       }
+
+       fsiz = params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1];
+       params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] = size;
+
+       if (resize_fifos(GET_CORE_IF(pcd))) {
+               retval = 0;
+       } else {
+               CFI_INFO
+                   ("%s: Error setting the feature Tx FIFO Size for EP%d\n",
+                    __func__, ep_addr);
+               params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] = fsiz;
+               retval = -DWC_E_INVALID;
+       }
+
+       return retval;
+}
+
+/**
+ * This function sets a new value for the buffer Alignment setup.
+ */
+static int cfi_set_rx_fifo_val(uint8_t * buf, dwc_otg_pcd_t * pcd)
+{
+       int retval;
+       uint32_t fsiz;
+       uint16_t size;
+       dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
+       rx_fifo_size_setup_t *prxfifoval;
+
+       prxfifoval = (rx_fifo_size_setup_t *) buf;
+       size = prxfifoval->wDepth;
+
+       fsiz = params->dev_rx_fifo_size;
+       params->dev_rx_fifo_size = size;
+
+       if (resize_fifos(GET_CORE_IF(pcd))) {
+               retval = 0;
+       } else {
+               CFI_INFO("%s: Error setting the feature Rx FIFO Size\n",
+                        __func__);
+               params->dev_rx_fifo_size = fsiz;
+               retval = -DWC_E_INVALID;
+       }
+
+       return retval;
+}
+
+/**
+ * This function reads the SG of an EP's buffer setup into the buffer buf
+ */
+static int cfi_ep_get_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+                            struct cfi_usb_ctrlrequest *req)
+{
+       int retval = -DWC_E_INVALID;
+       uint8_t addr;
+       cfi_ep_t *ep;
+
+       /* The Low Byte of the wValue contains a non-zero address of the endpoint */
+       addr = req->wValue & 0xFF;
+       if (addr == 0)          /* The address should be non-zero */
+               return retval;
+
+       ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
+                        __func__, addr);
+               return retval;
+       }
+
+       dwc_memcpy(buf, ep->bm_sg, BS_SG_VAL_DESC_LEN);
+       retval = BS_SG_VAL_DESC_LEN;
+       return retval;
+}
+
+/**
+ * This function reads the Concatenation value of an EP's buffer mode into 
+ * the buffer buf
+ */
+static int cfi_ep_get_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+                                struct cfi_usb_ctrlrequest *req)
+{
+       int retval = -DWC_E_INVALID;
+       uint8_t addr;
+       cfi_ep_t *ep;
+       uint8_t desc_count;
+
+       /* The Low Byte of the wValue contains a non-zero address of the endpoint */
+       addr = req->wValue & 0xFF;
+       if (addr == 0)          /* The address should be non-zero */
+               return retval;
+
+       ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
+                        __func__, addr);
+               return retval;
+       }
+
+       /* Copy the header to the buffer */
+       dwc_memcpy(buf, ep->bm_concat, BS_CONCAT_VAL_HDR_LEN);
+       /* Advance the buffer pointer by the header size */
+       buf += BS_CONCAT_VAL_HDR_LEN;
+
+       desc_count = ep->bm_concat->hdr.bDescCount;
+       /* Copy alll the wTxBytes to the buffer */
+       dwc_memcpy(buf, ep->bm_concat->wTxBytes, sizeof(uid16_t) * desc_count);
+
+       retval = BS_CONCAT_VAL_HDR_LEN + sizeof(uid16_t) * desc_count;
+       return retval;
+}
+
+/**
+ * This function reads the buffer Alignment value of an EP's buffer mode into 
+ * the buffer buf
+ *
+ * @return The total number of bytes copied to the buffer or negative error code.
+ */
+static int cfi_ep_get_align_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+                               struct cfi_usb_ctrlrequest *req)
+{
+       int retval = -DWC_E_INVALID;
+       uint8_t addr;
+       cfi_ep_t *ep;
+
+       /* The Low Byte of the wValue contains a non-zero address of the endpoint */
+       addr = req->wValue & 0xFF;
+       if (addr == 0)          /* The address should be non-zero */
+               return retval;
+
+       ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+       if (NULL == ep) {
+               CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
+                        __func__, addr);
+               return retval;
+       }
+
+       dwc_memcpy(buf, ep->bm_align, BS_ALIGN_VAL_HDR_LEN);
+       retval = BS_ALIGN_VAL_HDR_LEN;
+
+       return retval;
+}
+
+/**
+ * This function sets a new value for the specified feature
+ * 
+ * @param      pcd     A pointer to the PCD object
+ * 
+ * @return 0 if successful, negative error code otherwise to stall the DCE.
+ */
+static int cfi_set_feature_value(struct dwc_otg_pcd *pcd)
+{
+       int retval = -DWC_E_NOT_SUPPORTED;
+       uint16_t wIndex, wValue;
+       uint8_t bRequest;
+       struct dwc_otg_core_if *coreif;
+       cfiobject_t *cfi = pcd->cfi;
+       struct cfi_usb_ctrlrequest *ctrl_req;
+       uint8_t *buf;
+       ctrl_req = &cfi->ctrl_req;
+
+       buf = pcd->cfi->ctrl_req.data;
+
+       coreif = GET_CORE_IF(pcd);
+       bRequest = ctrl_req->bRequest;
+       wIndex = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wIndex);
+       wValue = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wValue);
+
+       /* See which feature is to be modified */
+       switch (wIndex) {
+       case FT_ID_DMA_BUFFER_SETUP:
+               /* Modify the feature */
+               if ((retval = cfi_ep_set_sg_val(buf, pcd)) < 0)
+                       return retval;
+
+               /* And send this request to the gadget */
+               cfi->need_gadget_att = 1;
+               break;
+
+       case FT_ID_DMA_BUFF_ALIGN:
+               if ((retval = cfi_ep_set_alignment_val(buf, pcd)) < 0)
+                       return retval;
+               cfi->need_gadget_att = 1;
+               break;
+
+       case FT_ID_DMA_CONCAT_SETUP:
+               /* Modify the feature */
+               if ((retval = cfi_ep_set_concat_val(buf, pcd)) < 0)
+                       return retval;
+               cfi->need_gadget_att = 1;
+               break;
+
+       case FT_ID_DMA_CIRCULAR:
+               CFI_INFO("FT_ID_DMA_CIRCULAR\n");
+               break;
+
+       case FT_ID_THRESHOLD_SETUP:
+               CFI_INFO("FT_ID_THRESHOLD_SETUP\n");
+               break;
+
+       case FT_ID_DFIFO_DEPTH:
+               CFI_INFO("FT_ID_DFIFO_DEPTH\n");
+               break;
+
+       case FT_ID_TX_FIFO_DEPTH:
+               CFI_INFO("FT_ID_TX_FIFO_DEPTH\n");
+               if ((retval = cfi_ep_set_tx_fifo_val(buf, pcd)) < 0)
+                       return retval;
+               cfi->need_gadget_att = 0;
+               break;
+
+       case FT_ID_RX_FIFO_DEPTH:
+               CFI_INFO("FT_ID_RX_FIFO_DEPTH\n");
+               if ((retval = cfi_set_rx_fifo_val(buf, pcd)) < 0)
+                       return retval;
+               cfi->need_gadget_att = 0;
+               break;
+       }
+
+       return retval;
+}
+
+#endif //DWC_UTE_CFI
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_cfi.h b/drivers/usb/host/dwc_otg/dwc_otg_cfi.h
new file mode 100644
index 0000000..cbccdab
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_cfi.h
@@ -0,0 +1,320 @@
+/* ==========================================================================
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_CFI_H__)
+#define __DWC_OTG_CFI_H__
+
+#include "dwc_otg_pcd.h"
+#include "dwc_cfi_common.h"
+
+/**
+ * @file
+ * This file contains the CFI related OTG PCD specific common constants, 
+ * interfaces(functions and macros) and data structures.The CFI Protocol is an 
+ * optional interface for internal testing purposes that a DUT may implement to 
+ * support testing of configurable features.
+ *
+ */
+
+struct dwc_otg_pcd;
+struct dwc_otg_pcd_ep;
+
+/** OTG CFI Features (properties) ID constants */
+/** This is a request for all Core Features */
+#define FT_ID_DMA_MODE                                 0x0001
+#define FT_ID_DMA_BUFFER_SETUP                 0x0002
+#define FT_ID_DMA_BUFF_ALIGN                   0x0003
+#define FT_ID_DMA_CONCAT_SETUP                 0x0004
+#define FT_ID_DMA_CIRCULAR                             0x0005
+#define FT_ID_THRESHOLD_SETUP                  0x0006
+#define FT_ID_DFIFO_DEPTH                              0x0007
+#define FT_ID_TX_FIFO_DEPTH                            0x0008
+#define FT_ID_RX_FIFO_DEPTH                            0x0009
+
+/**********************************************************/
+#define CFI_INFO_DEF
+
+#ifdef CFI_INFO_DEF
+#define CFI_INFO(fmt...)       DWC_PRINTF("CFI: " fmt);
+#else
+#define CFI_INFO(fmt...)
+#endif
+
+#define min(x,y) ({ \
+       x < y ? x : y; })
+
+#define max(x,y) ({ \
+       x > y ? x : y; })
+
+/**
+ * Descriptor DMA SG Buffer setup structure (SG buffer). This structure is
+ * also used for setting up a buffer for Circular DDMA.
+ */
+struct _ddma_sg_buffer_setup {
+#define BS_SG_VAL_DESC_LEN     6
+       /* The OUT EP address */
+       uint8_t bOutEndpointAddress;
+       /* The IN EP address */
+       uint8_t bInEndpointAddress;
+       /* Number of bytes to put between transfer segments (must be DWORD boundaries) */
+       uint8_t bOffset;
+       /* The number of transfer segments (a DMA descriptors per each segment) */
+       uint8_t bCount;
+       /* Size (in byte) of each transfer segment */
+       uint16_t wSize;
+} __attribute__ ((packed));
+typedef struct _ddma_sg_buffer_setup ddma_sg_buffer_setup_t;
+
+/** Descriptor DMA Concatenation Buffer setup structure */
+struct _ddma_concat_buffer_setup_hdr {
+#define BS_CONCAT_VAL_HDR_LEN  4
+       /* The endpoint for which the buffer is to be set up */
+       uint8_t bEndpointAddress;
+       /* The count of descriptors to be used */
+       uint8_t bDescCount;
+       /* The total size of the transfer */
+       uint16_t wSize;
+} __attribute__ ((packed));
+typedef struct _ddma_concat_buffer_setup_hdr ddma_concat_buffer_setup_hdr_t;
+
+/** Descriptor DMA Concatenation Buffer setup structure */
+struct _ddma_concat_buffer_setup {
+       /* The SG header */
+       ddma_concat_buffer_setup_hdr_t hdr;
+
+       /* The XFER sizes pointer (allocated dynamically) */
+       uint16_t *wTxBytes;
+} __attribute__ ((packed));
+typedef struct _ddma_concat_buffer_setup ddma_concat_buffer_setup_t;
+
+/** Descriptor DMA Alignment Buffer setup structure */
+struct _ddma_align_buffer_setup {
+#define BS_ALIGN_VAL_HDR_LEN   2
+       uint8_t bEndpointAddress;
+       uint8_t bAlign;
+} __attribute__ ((packed));
+typedef struct _ddma_align_buffer_setup ddma_align_buffer_setup_t;
+
+/** Transmit FIFO Size setup structure */
+struct _tx_fifo_size_setup {
+       uint8_t bEndpointAddress;
+       uint16_t wDepth;
+} __attribute__ ((packed));
+typedef struct _tx_fifo_size_setup tx_fifo_size_setup_t;
+
+/** Transmit FIFO Size setup structure */
+struct _rx_fifo_size_setup {
+       uint16_t wDepth;
+} __attribute__ ((packed));
+typedef struct _rx_fifo_size_setup rx_fifo_size_setup_t;
+
+/**
+ * struct cfi_usb_ctrlrequest - the CFI implementation of the struct usb_ctrlrequest
+ * This structure encapsulates the standard usb_ctrlrequest and adds a pointer
+ * to the data returned in the data stage of a 3-stage Control Write requests.
+ */
+struct cfi_usb_ctrlrequest {
+       uint8_t bRequestType;
+       uint8_t bRequest;
+       uint16_t wValue;
+       uint16_t wIndex;
+       uint16_t wLength;
+       uint8_t *data;
+} UPACKED;
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * The CFI wrapper of the enabled and activated dwc_otg_pcd_ep structures.
+ * This structure is used to store the buffer setup data for any
+ * enabled endpoint in the PCD.
+ */
+struct cfi_ep {
+       /* Entry for the list container */
+       dwc_list_link_t lh;
+       /* Pointer to the active PCD endpoint structure */
+       struct dwc_otg_pcd_ep *ep;
+       /* The last descriptor in the chain of DMA descriptors of the endpoint */
+       struct dwc_otg_dma_desc *dma_desc_last;
+       /* The SG feature value */
+       ddma_sg_buffer_setup_t *bm_sg;
+       /* The Circular feature value */
+       ddma_sg_buffer_setup_t *bm_circ;
+       /* The Concatenation feature value */
+       ddma_concat_buffer_setup_t *bm_concat;
+       /* The Alignment feature value */
+       ddma_align_buffer_setup_t *bm_align;
+       /* XFER length */
+       uint32_t xfer_len;
+       /*
+        * Count of DMA descriptors currently used.
+        * The total should not exceed the MAX_DMA_DESCS_PER_EP value
+        * defined in the dwc_otg_cil.h
+        */
+       uint32_t desc_count;
+};
+typedef struct cfi_ep cfi_ep_t;
+
+typedef struct cfi_dma_buff {
+#define CFI_IN_BUF_LEN 1024
+#define CFI_OUT_BUF_LEN        1024
+       dma_addr_t addr;
+       uint8_t *buf;
+} cfi_dma_buff_t;
+
+struct cfiobject;
+
+/**
+ * This is the interface for the CFI operations.
+ *
+ * @param      ep_enable                       Called when any endpoint is enabled and activated.
+ * @param      release                         Called when the CFI object is released and it needs to correctly
+ *                                                             deallocate the dynamic memory
+ * @param      ctrl_write_complete     Called when the data stage of the request is complete
+ */
+typedef struct cfi_ops {
+       int (*ep_enable) (struct cfiobject * cfi, struct dwc_otg_pcd * pcd,
+                         struct dwc_otg_pcd_ep * ep);
+       void *(*ep_alloc_buf) (struct cfiobject * cfi, struct dwc_otg_pcd * pcd,
+                              struct dwc_otg_pcd_ep * ep, dma_addr_t * dma,
+                              unsigned size, gfp_t flags);
+       void (*release) (struct cfiobject * cfi);
+       int (*ctrl_write_complete) (struct cfiobject * cfi,
+                                   struct dwc_otg_pcd * pcd);
+       void (*build_descriptors) (struct cfiobject * cfi,
+                                  struct dwc_otg_pcd * pcd,
+                                  struct dwc_otg_pcd_ep * ep,
+                                  dwc_otg_pcd_request_t * req);
+} cfi_ops_t;
+
+struct cfiobject {
+       cfi_ops_t ops;
+       struct dwc_otg_pcd *pcd;
+       struct usb_gadget *gadget;
+
+       /* Buffers used to send/receive CFI-related request data */
+       cfi_dma_buff_t buf_in;
+       cfi_dma_buff_t buf_out;
+
+       /* CFI specific Control request wrapper */
+       struct cfi_usb_ctrlrequest ctrl_req;
+
+       /* The list of active EP's in the PCD of type cfi_ep_t */
+       dwc_list_link_t active_eps;
+
+       /* This flag shall control the propagation of a specific request
+        * to the gadget's processing routines.
+        * 0 - no gadget handling
+        * 1 - the gadget needs to know about this request (w/o completing a status
+        * phase - just return a 0 to the _setup callback)
+        */
+       uint8_t need_gadget_att;
+
+       /* Flag indicating whether the status IN phase needs to be
+        * completed by the PCD
+        */
+       uint8_t need_status_in_complete;
+};
+typedef struct cfiobject cfiobject_t;
+
+#define DUMP_MSG
+
+#if defined(DUMP_MSG)
+static inline void dump_msg(const u8 * buf, unsigned int length)
+{
+       unsigned int start, num, i;
+       char line[52], *p;
+
+       if (length >= 512)
+               return;
+
+       start = 0;
+       while (length > 0) {
+               num = min(length, 16u);
+               p = line;
+               for (i = 0; i < num; ++i) {
+                       if (i == 8)
+                               *p++ = ' ';
+                       DWC_SPRINTF(p, " %02x", buf[i]);
+                       p += 3;
+               }
+               *p = 0;
+               DWC_DEBUG("%6x: %s\n", start, line);
+               buf += num;
+               start += num;
+               length -= num;
+       }
+}
+#else
+static inline void dump_msg(const u8 * buf, unsigned int length)
+{
+}
+#endif
+
+/**
+ * This function returns a pointer to cfi_ep_t object with the addr address.
+ */
+static inline struct cfi_ep *get_cfi_ep_by_addr(struct cfiobject *cfi,
+                                               uint8_t addr)
+{
+       struct cfi_ep *pcfiep;
+       dwc_list_link_t *tmp;
+
+       DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+               pcfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+
+               if (pcfiep->ep->desc->bEndpointAddress == addr) {
+                       return pcfiep;
+               }
+       }
+
+       return NULL;
+}
+
+/**
+ * This function returns a pointer to cfi_ep_t object that matches
+ * the dwc_otg_pcd_ep object.
+ */
+static inline struct cfi_ep *get_cfi_ep_by_pcd_ep(struct cfiobject *cfi,
+                                                 struct dwc_otg_pcd_ep *ep)
+{
+       struct cfi_ep *pcfiep = NULL;
+       dwc_list_link_t *tmp;
+
+       DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+               pcfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+               if (pcfiep->ep == ep) {
+                       return pcfiep;
+               }
+       }
+       return NULL;
+}
+
+int cfi_setup(struct dwc_otg_pcd *pcd, struct cfi_usb_ctrlrequest *ctrl);
+
+#endif /* (__DWC_OTG_CFI_H__) */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_cil.c b/drivers/usb/host/dwc_otg/dwc_otg_cil.c
new file mode 100644
index 0000000..9b67537
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_cil.c
@@ -0,0 +1,7151 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.c $
+ * $Revision: #191 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * The CIL manages the memory map for the core so that the HCD and PCD
+ * don't have to do this separately. It also handles basic tasks like
+ * reading/writing the registers and data FIFOs in the controller.
+ * Some of the data access functions provide encapsulation of several
+ * operations required to perform a task, such as writing multiple
+ * registers to start a transfer. Finally, the CIL performs basic
+ * services that are not specific to either the host or device modes
+ * of operation. These services include management of the OTG Host
+ * Negotiation Protocol (HNP) and Session Request Protocol (SRP). A
+ * Diagnostic API is also provided to allow testing of the controller
+ * hardware.
+ *
+ * The Core Interface Layer has the following requirements:
+ * - Provides basic controller operations.
+ * - Minimal use of OS services. 
+ * - The OS services used will be abstracted by using inline functions
+ *      or macros.
+ *
+ */
+
+#include "dwc_os.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+
+static int dwc_otg_setup_params(dwc_otg_core_if_t * core_if);
+
+/**
+ * This function is called to initialize the DWC_otg CSR data
+ * structures. The register addresses in the device and host
+ * structures are initialized from the base address supplied by the
+ * caller. The calling function must make the OS calls to get the
+ * base address of the DWC_otg controller registers. The core_params
+ * argument holds the parameters that specify how the core should be
+ * configured.
+ *
+ * @param reg_base_addr Base address of DWC_otg core registers
+ *
+ */
+dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t * reg_base_addr)
+{
+       dwc_otg_core_if_t *core_if = 0;
+       dwc_otg_dev_if_t *dev_if = 0;
+       dwc_otg_host_if_t *host_if = 0;
+       uint8_t *reg_base = (uint8_t *) reg_base_addr;
+       int i = 0;
+
+       DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, reg_base_addr);
+
+       core_if = DWC_ALLOC(sizeof(dwc_otg_core_if_t));
+
+       if (core_if == NULL) {
+               DWC_DEBUGPL(DBG_CIL,
+                           "Allocation of dwc_otg_core_if_t failed\n");
+               return 0;
+       }
+       core_if->core_global_regs = (dwc_otg_core_global_regs_t *) reg_base;
+
+       /*
+        * Allocate the Device Mode structures.
+        */
+       dev_if = DWC_ALLOC(sizeof(dwc_otg_dev_if_t));
+
+       if (dev_if == NULL) {
+               DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_dev_if_t failed\n");
+               DWC_FREE(core_if);
+               return 0;
+       }
+
+       dev_if->dev_global_regs =
+           (dwc_otg_device_global_regs_t *) (reg_base +
+                                             DWC_DEV_GLOBAL_REG_OFFSET);
+
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               dev_if->in_ep_regs[i] = (dwc_otg_dev_in_ep_regs_t *)
+                   (reg_base + DWC_DEV_IN_EP_REG_OFFSET +
+                    (i * DWC_EP_REG_OFFSET));
+
+               dev_if->out_ep_regs[i] = (dwc_otg_dev_out_ep_regs_t *)
+                   (reg_base + DWC_DEV_OUT_EP_REG_OFFSET +
+                    (i * DWC_EP_REG_OFFSET));
+               DWC_DEBUGPL(DBG_CILV, "in_ep_regs[%d]->diepctl=%p\n",
+                           i, &dev_if->in_ep_regs[i]->diepctl);
+               DWC_DEBUGPL(DBG_CILV, "out_ep_regs[%d]->doepctl=%p\n",
+                           i, &dev_if->out_ep_regs[i]->doepctl);
+       }
+
+       dev_if->speed = 0;      // unknown
+
+       core_if->dev_if = dev_if;
+
+       /*
+        * Allocate the Host Mode structures.
+        */
+       host_if = DWC_ALLOC(sizeof(dwc_otg_host_if_t));
+
+       if (host_if == NULL) {
+               DWC_DEBUGPL(DBG_CIL,
+                           "Allocation of dwc_otg_host_if_t failed\n");
+               DWC_FREE(dev_if);
+               DWC_FREE(core_if);
+               return 0;
+       }
+
+       host_if->host_global_regs = (dwc_otg_host_global_regs_t *)
+           (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET);
+
+       host_if->hprt0 =
+           (uint32_t *) (reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET);
+
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               host_if->hc_regs[i] = (dwc_otg_hc_regs_t *)
+                   (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET +
+                    (i * DWC_OTG_CHAN_REGS_OFFSET));
+               DWC_DEBUGPL(DBG_CILV, "hc_reg[%d]->hcchar=%p\n",
+                           i, &host_if->hc_regs[i]->hcchar);
+       }
+
+       host_if->num_host_channels = MAX_EPS_CHANNELS;
+       core_if->host_if = host_if;
+
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               core_if->data_fifo[i] =
+                   (uint32_t *) (reg_base + DWC_OTG_DATA_FIFO_OFFSET +
+                                 (i * DWC_OTG_DATA_FIFO_SIZE));
+               DWC_DEBUGPL(DBG_CILV, "data_fifo[%d]=0x%08lx\n",
+                           i, (unsigned long)core_if->data_fifo[i]);
+       }
+
+       core_if->pcgcctl = (uint32_t *) (reg_base + DWC_OTG_PCGCCTL_OFFSET);
+
+       /* Initiate lx_state to L3 disconnected state */
+       core_if->lx_state = DWC_OTG_L3;
+       /*
+        * Store the contents of the hardware configuration registers here for
+        * easy access later.
+        */
+       core_if->hwcfg1.d32 =
+           DWC_READ_REG32(&core_if->core_global_regs->ghwcfg1);
+       core_if->hwcfg2.d32 =
+           DWC_READ_REG32(&core_if->core_global_regs->ghwcfg2);
+       core_if->hwcfg3.d32 =
+           DWC_READ_REG32(&core_if->core_global_regs->ghwcfg3);
+       core_if->hwcfg4.d32 =
+           DWC_READ_REG32(&core_if->core_global_regs->ghwcfg4);
+
+       /* Force host mode to get HPTXFSIZ exact power on value */
+       {
+               gusbcfg_data_t gusbcfg = {.d32 = 0 };
+               gusbcfg.d32 =  DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+               gusbcfg.b.force_host_mode = 1;
+               DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
+               dwc_mdelay(100); 
+               core_if->hptxfsiz.d32 =
+               DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
+               gusbcfg.d32 =  DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+               gusbcfg.b.force_host_mode = 0;
+               DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
+               dwc_mdelay(100); 
+       }
+
+       DWC_DEBUGPL(DBG_CILV, "hwcfg1=%08x\n", core_if->hwcfg1.d32);
+       DWC_DEBUGPL(DBG_CILV, "hwcfg2=%08x\n", core_if->hwcfg2.d32);
+       DWC_DEBUGPL(DBG_CILV, "hwcfg3=%08x\n", core_if->hwcfg3.d32);
+       DWC_DEBUGPL(DBG_CILV, "hwcfg4=%08x\n", core_if->hwcfg4.d32);
+
+       core_if->hcfg.d32 =
+           DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+       core_if->dcfg.d32 =
+           DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+
+       DWC_DEBUGPL(DBG_CILV, "hcfg=%08x\n", core_if->hcfg.d32);
+       DWC_DEBUGPL(DBG_CILV, "dcfg=%08x\n", core_if->dcfg.d32);
+
+       DWC_DEBUGPL(DBG_CILV, "op_mode=%0x\n", core_if->hwcfg2.b.op_mode);
+       DWC_DEBUGPL(DBG_CILV, "arch=%0x\n", core_if->hwcfg2.b.architecture);
+       DWC_DEBUGPL(DBG_CILV, "num_dev_ep=%d\n", core_if->hwcfg2.b.num_dev_ep);
+       DWC_DEBUGPL(DBG_CILV, "num_host_chan=%d\n",
+                   core_if->hwcfg2.b.num_host_chan);
+       DWC_DEBUGPL(DBG_CILV, "nonperio_tx_q_depth=0x%0x\n",
+                   core_if->hwcfg2.b.nonperio_tx_q_depth);
+       DWC_DEBUGPL(DBG_CILV, "host_perio_tx_q_depth=0x%0x\n",
+                   core_if->hwcfg2.b.host_perio_tx_q_depth);
+       DWC_DEBUGPL(DBG_CILV, "dev_token_q_depth=0x%0x\n",
+                   core_if->hwcfg2.b.dev_token_q_depth);
+
+       DWC_DEBUGPL(DBG_CILV, "Total FIFO SZ=%d\n",
+                   core_if->hwcfg3.b.dfifo_depth);
+       DWC_DEBUGPL(DBG_CILV, "xfer_size_cntr_width=%0x\n",
+                   core_if->hwcfg3.b.xfer_size_cntr_width);
+
+       /*
+        * Set the SRP sucess bit for FS-I2c
+        */
+       core_if->srp_success = 0;
+       core_if->srp_timer_started = 0;
+
+       /*
+        * Create new workqueue and init works
+        */
+       core_if->wq_otg = DWC_WORKQ_ALLOC("dwc_otg");
+       if (core_if->wq_otg == 0) {
+               DWC_WARN("DWC_WORKQ_ALLOC failed\n");
+               DWC_FREE(host_if);
+               DWC_FREE(dev_if);
+               DWC_FREE(core_if);
+               return 0;
+       }
+
+       core_if->snpsid = DWC_READ_REG32(&core_if->core_global_regs->gsnpsid);
+
+       DWC_PRINTF("Core Release: %x.%x%x%x\n",
+                  (core_if->snpsid >> 12 & 0xF),
+                  (core_if->snpsid >> 8 & 0xF),
+                  (core_if->snpsid >> 4 & 0xF), (core_if->snpsid & 0xF));
+
+       core_if->wkp_timer = DWC_TIMER_ALLOC("Wake Up Timer",
+                                            w_wakeup_detected, core_if);
+       if (core_if->wkp_timer == 0) {
+               DWC_WARN("DWC_TIMER_ALLOC failed\n");
+               DWC_FREE(host_if);
+               DWC_FREE(dev_if);
+               DWC_WORKQ_FREE(core_if->wq_otg);
+               DWC_FREE(core_if);
+               return 0;
+       }
+
+       if (dwc_otg_setup_params(core_if)) {
+               DWC_WARN("Error while setting core params\n");
+       }
+
+       core_if->hibernation_suspend = 0;
+
+       /** ADP initialization */
+       dwc_otg_adp_init(core_if);
+       
+       return core_if;
+}
+
+/**
+ * This function frees the structures allocated by dwc_otg_cil_init().
+ *
+ * @param core_if The core interface pointer returned from
+ *               dwc_otg_cil_init().
+ *
+ */
+void dwc_otg_cil_remove(dwc_otg_core_if_t * core_if)
+{
+       dctl_data_t dctl = {.d32 = 0 };
+       DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, core_if);
+
+       /* Disable all interrupts */
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, 1, 0);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0);
+
+       dctl.b.sftdiscon = 1;
+       if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0,
+                                dctl.d32);
+       }
+
+       if (core_if->wq_otg) {
+               DWC_WORKQ_WAIT_WORK_DONE(core_if->wq_otg, 500);
+               DWC_WORKQ_FREE(core_if->wq_otg);
+       }
+       if (core_if->dev_if) {
+               DWC_FREE(core_if->dev_if);
+       }
+       if (core_if->host_if) {
+               DWC_FREE(core_if->host_if);
+       }
+
+       /** Remove ADP Stuff  */
+       dwc_otg_adp_remove(core_if);
+       if (core_if->core_params) {
+               DWC_FREE(core_if->core_params);
+       }
+       if (core_if->wkp_timer) {
+               DWC_TIMER_FREE(core_if->wkp_timer);
+       }
+       if (core_if->srp_timer) {
+               DWC_TIMER_FREE(core_if->srp_timer);
+       }
+       DWC_FREE(core_if);
+}
+
+/**
+ * This function enables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * core_if)
+{
+       gahbcfg_data_t ahbcfg = {.d32 = 0 };
+       ahbcfg.b.glblintrmsk = 1;       /* Enable interrupts */
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, 0, ahbcfg.d32);
+}
+
+/**
+ * This function disables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * core_if)
+{
+       gahbcfg_data_t ahbcfg = {.d32 = 0 };
+       ahbcfg.b.glblintrmsk = 1;       /* Disable interrupts */
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+}
+
+/**
+ * This function initializes the commmon interrupts, used in both
+ * device and host modes.
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ *
+ */
+static void dwc_otg_enable_common_interrupts(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       /* Clear any pending OTG Interrupts */
+       DWC_WRITE_REG32(&global_regs->gotgint, 0xFFFFFFFF);
+
+       /* Clear any pending interrupts */
+       DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
+
+       /*
+        * Enable the interrupts in the GINTMSK.
+        */
+       intr_mask.b.modemismatch = 1;
+       intr_mask.b.otgintr = 1;
+
+       if (!core_if->dma_enable) {
+               intr_mask.b.rxstsqlvl = 1;
+       }
+
+       intr_mask.b.conidstschng = 1;
+       intr_mask.b.wkupintr = 1;
+       intr_mask.b.disconnect = 0;
+       intr_mask.b.usbsuspend = 1;
+       intr_mask.b.sessreqintr = 1;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       if (core_if->core_params->lpm_enable) {
+               intr_mask.b.lpmtranrcvd = 1;
+       }
+#endif
+       DWC_WRITE_REG32(&global_regs->gintmsk, intr_mask.d32);
+}
+
+/*
+ * The restore operation is modified to support Synopsys Emulated Powerdown and
+ * Hibernation. This function is for exiting from Device mode hibernation by
+ * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup.
+ * @param core_if Programming view of DWC_otg controller.
+ * @param rem_wakeup - indicates whether resume is initiated by Device or Host.
+ * @param reset - indicates whether resume is initiated by Reset.
+ */
+int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
+                                      int rem_wakeup, int reset)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+       dctl_data_t dctl = {.d32 = 0 };
+
+       int timeout = 2000;
+
+       if (!core_if->hibernation_suspend) {
+               DWC_PRINTF("Already exited from Hibernation\n");
+               return 1;
+       }
+
+       DWC_DEBUGPL(DBG_PCD, "%s called\n", __FUNCTION__);
+       /* Switch-on voltage to the core */
+       gpwrdn.b.pwrdnswtch = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Reset core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Assert Restore signal */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.restore = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable power clamps */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnclmp = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       if (rem_wakeup) {
+               dwc_udelay(70);
+       }
+
+       /* Deassert Reset core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable PMU interrupt */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuintsel = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Mask interrupts from gpwrdn */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.connect_det_msk = 1;
+       gpwrdn.b.srp_det_msk = 1;
+       gpwrdn.b.disconn_det_msk = 1;
+       gpwrdn.b.rst_det_msk = 1;
+       gpwrdn.b.lnstchng_msk = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Indicates that we are going out from hibernation */
+       core_if->hibernation_suspend = 0;
+
+       /*
+        * Set Restore Essential Regs bit in PCGCCTL register, restore_mode = 1
+        * indicates restore from remote_wakeup
+        */
+       restore_essential_regs(core_if, rem_wakeup, 0);
+
+       /*
+        * Wait a little for seeing new value of variable hibernation_suspend if
+        * Restore done interrupt received before polling
+        */
+       dwc_udelay(10);
+
+       if (core_if->hibernation_suspend == 0) {
+               /*
+                * Wait For Restore_done Interrupt. This mechanism of polling the 
+                * interrupt is introduced to avoid any possible race conditions
+                */
+               do {
+                       gintsts_data_t gintsts;
+                       gintsts.d32 =
+                           DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+                       if (gintsts.b.restoredone) {
+                               gintsts.d32 = 0;
+                               gintsts.b.restoredone = 1;
+                               DWC_WRITE_REG32(&core_if->core_global_regs->
+                                               gintsts, gintsts.d32);
+                               DWC_PRINTF("Restore Done Interrupt seen\n");
+                               break;
+                       }
+                       dwc_udelay(10);
+               } while (--timeout);
+               if (!timeout) {
+                       DWC_PRINTF("Restore Done interrupt wasn't generated here\n");
+               }
+       }
+       /* Clear all pending interupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+       /* De-assert Restore */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.restore = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       if (!rem_wakeup) {
+               pcgcctl.d32 = 0;
+               pcgcctl.b.rstpdwnmodule = 1;
+               DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+       }
+
+       /* Restore GUSBCFG and DCFG */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
+                       core_if->gr_backup->gusbcfg_local);
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
+                       core_if->dr_backup->dcfg);
+
+       /* De-assert Wakeup Logic */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuactv = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       if (!rem_wakeup) {
+               /* Set Device programming done bit */
+               dctl.b.pwronprgdone = 1;
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+       } else {
+               /* Start Remote Wakeup Signaling */
+               dctl.d32 = core_if->dr_backup->dctl;
+               dctl.b.rmtwkupsig = 1;
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+       }
+
+       dwc_mdelay(2);
+       /* Clear all pending interupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+       /* Restore global registers */
+       dwc_otg_restore_global_regs(core_if);
+       /* Restore device global registers */
+       dwc_otg_restore_dev_regs(core_if, rem_wakeup);
+
+       if (rem_wakeup) {
+               dwc_mdelay(7);
+               dctl.d32 = 0;
+               dctl.b.rmtwkupsig = 1;
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
+       }
+
+       core_if->hibernation_suspend = 0;
+       /* The core will be in ON STATE */
+       core_if->lx_state = DWC_OTG_L0;
+       DWC_PRINTF("Hibernation recovery completes here\n");
+
+       return 1;
+}
+
+/*
+ * The restore operation is modified to support Synopsys Emulated Powerdown and
+ * Hibernation. This function is for exiting from Host mode hibernation by
+ * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup.
+ * @param core_if Programming view of DWC_otg controller.
+ * @param rem_wakeup - indicates whether resume is initiated by Device or Host.
+ * @param reset - indicates whether resume is initiated by Reset.
+ */
+int dwc_otg_host_hibernation_restore(dwc_otg_core_if_t * core_if,
+                                    int rem_wakeup, int reset)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       hprt0_data_t hprt0 = {.d32 = 0 };
+
+       int timeout = 2000;
+
+       DWC_DEBUGPL(DBG_HCD, "%s called\n", __FUNCTION__);
+       /* Switch-on voltage to the core */
+       gpwrdn.b.pwrdnswtch = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Reset core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Assert Restore signal */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.restore = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable power clamps */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnclmp = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       if (!rem_wakeup) {
+               dwc_udelay(50);
+       }
+
+       /* Deassert Reset core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable PMU interrupt */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuintsel = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       gpwrdn.d32 = 0;
+       gpwrdn.b.connect_det_msk = 1;
+       gpwrdn.b.srp_det_msk = 1;
+       gpwrdn.b.disconn_det_msk = 1;
+       gpwrdn.b.rst_det_msk = 1;
+       gpwrdn.b.lnstchng_msk = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Indicates that we are going out from hibernation */
+       core_if->hibernation_suspend = 0;
+
+       /* Set Restore Essential Regs bit in PCGCCTL register */
+       restore_essential_regs(core_if, rem_wakeup, 1);
+
+       /* Wait a little for seeing new value of variable hibernation_suspend if
+        * Restore done interrupt received before polling */
+       dwc_udelay(10);
+
+       if (core_if->hibernation_suspend == 0) {
+               /* Wait For Restore_done Interrupt. This mechanism of polling the
+                * interrupt is introduced to avoid any possible race conditions
+                */
+               do {
+                       gintsts_data_t gintsts;
+                       gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+                       if (gintsts.b.restoredone) {
+                               gintsts.d32 = 0;
+                               gintsts.b.restoredone = 1;
+                       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+                               DWC_DEBUGPL(DBG_HCD,"Restore Done Interrupt seen\n");   
+                               break;
+                       }
+                       dwc_udelay(10);
+               } while (--timeout);
+               if (!timeout) {
+                       DWC_WARN("Restore Done interrupt wasn't generated\n");
+               }
+       }
+
+       /* Set the flag's value to 0 again after receiving restore done interrupt */
+       core_if->hibernation_suspend = 0;
+
+       /* This step is not described in functional spec but if not wait for this
+        * delay, mismatch interrupts occurred because just after restore core is
+        * in Device mode(gintsts.curmode == 0) */
+       dwc_mdelay(100);
+
+       /* Clear all pending interrupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+       /* De-assert Restore */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.restore = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Restore GUSBCFG and HCFG */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
+                       core_if->gr_backup->gusbcfg_local);
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg,
+                       core_if->hr_backup->hcfg_local);
+
+       /* De-assert Wakeup Logic */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuactv = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Start the Resume operation by programming HPRT0 */
+       hprt0.d32 = core_if->hr_backup->hprt0_local;
+       hprt0.b.prtpwr = 1;
+       hprt0.b.prtena = 0;
+       hprt0.b.prtsusp = 0;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+       DWC_PRINTF("Resume Starts Now\n");
+       if (!reset) {           // Indicates it is Resume Operation
+               hprt0.d32 = core_if->hr_backup->hprt0_local;
+               hprt0.b.prtres = 1;
+               hprt0.b.prtpwr = 1;
+               hprt0.b.prtena = 0;
+               hprt0.b.prtsusp = 0;
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+               if (!rem_wakeup)
+                       hprt0.b.prtres = 0;
+               /* Wait for Resume time and then program HPRT again */
+               dwc_mdelay(100);
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+       } else {                // Indicates it is Reset Operation
+               hprt0.d32 = core_if->hr_backup->hprt0_local;
+               hprt0.b.prtrst = 1;
+               hprt0.b.prtpwr = 1;
+               hprt0.b.prtena = 0;
+               hprt0.b.prtsusp = 0;
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+               /* Wait for Reset time and then program HPRT again */
+               dwc_mdelay(60);
+               hprt0.b.prtrst = 0;
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+       }
+       /* Clear all interrupt status */
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       hprt0.b.prtconndet = 1;
+       hprt0.b.prtenchng = 1;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+       /* Clear all pending interupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+       /* Restore global registers */
+       dwc_otg_restore_global_regs(core_if);
+       /* Restore host global registers */
+       dwc_otg_restore_host_regs(core_if, reset);
+
+       /* The core will be in ON STATE */
+       core_if->lx_state = DWC_OTG_L0;
+       DWC_PRINTF("Hibernation recovery is complete here\n");
+       return 0;
+}
+
+/** Saves some register values into system memory. */
+int dwc_otg_save_global_regs(dwc_otg_core_if_t * core_if)
+{
+       struct dwc_otg_global_regs_backup *gr;
+       int i;
+
+       gr = core_if->gr_backup;
+       if (!gr) {
+               gr = DWC_ALLOC(sizeof(*gr));
+               if (!gr) {
+                       return -DWC_E_NO_MEMORY;
+               }
+               core_if->gr_backup = gr;
+       }
+
+       gr->gotgctl_local = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+       gr->gintmsk_local = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+       gr->gahbcfg_local = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
+       gr->gusbcfg_local = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       gr->grxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+       gr->gnptxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz);
+       gr->hptxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       gr->glpmcfg_local = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+#endif
+       gr->gi2cctl_local = DWC_READ_REG32(&core_if->core_global_regs->gi2cctl);
+       gr->pcgcctl_local = DWC_READ_REG32(core_if->pcgcctl);
+       gr->gdfifocfg_local =
+           DWC_READ_REG32(&core_if->core_global_regs->gdfifocfg);
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               gr->dtxfsiz_local[i] =
+                   DWC_READ_REG32(&(core_if->core_global_regs->dtxfsiz[i]));
+       }
+
+       DWC_DEBUGPL(DBG_ANY, "===========Backing Global registers==========\n");
+       DWC_DEBUGPL(DBG_ANY, "Backed up gotgctl   = %08x\n", gr->gotgctl_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up gintmsk   = %08x\n", gr->gintmsk_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up gahbcfg   = %08x\n", gr->gahbcfg_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up gusbcfg   = %08x\n", gr->gusbcfg_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up grxfsiz   = %08x\n", gr->grxfsiz_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up gnptxfsiz = %08x\n",
+                   gr->gnptxfsiz_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up hptxfsiz  = %08x\n",
+                   gr->hptxfsiz_local);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       DWC_DEBUGPL(DBG_ANY, "Backed up glpmcfg   = %08x\n", gr->glpmcfg_local);
+#endif
+       DWC_DEBUGPL(DBG_ANY, "Backed up gi2cctl   = %08x\n", gr->gi2cctl_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up pcgcctl   = %08x\n", gr->pcgcctl_local);
+       DWC_DEBUGPL(DBG_ANY,"Backed up gdfifocfg   = %08x\n",gr->gdfifocfg_local);
+
+       return 0;
+}
+
+/** Saves GINTMSK register before setting the msk bits. */
+int dwc_otg_save_gintmsk_reg(dwc_otg_core_if_t * core_if)
+{
+       struct dwc_otg_global_regs_backup *gr;
+
+       gr = core_if->gr_backup;
+       if (!gr) {
+               gr = DWC_ALLOC(sizeof(*gr));
+               if (!gr) {
+                       return -DWC_E_NO_MEMORY;
+               }
+               core_if->gr_backup = gr;
+       }
+
+       gr->gintmsk_local = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+
+       DWC_DEBUGPL(DBG_ANY,"=============Backing GINTMSK registers============\n");
+       DWC_DEBUGPL(DBG_ANY, "Backed up gintmsk   = %08x\n", gr->gintmsk_local);
+
+       return 0;
+}
+
+int dwc_otg_save_dev_regs(dwc_otg_core_if_t * core_if)
+{
+       struct dwc_otg_dev_regs_backup *dr;
+       int i;
+
+       dr = core_if->dr_backup;
+       if (!dr) {
+               dr = DWC_ALLOC(sizeof(*dr));
+               if (!dr) {
+                       return -DWC_E_NO_MEMORY;
+               }
+               core_if->dr_backup = dr;
+       }
+
+       dr->dcfg = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+       dr->dctl = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+       dr->daintmsk =
+           DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
+       dr->diepmsk =
+           DWC_READ_REG32(&core_if->dev_if->dev_global_regs->diepmsk);
+       dr->doepmsk =
+           DWC_READ_REG32(&core_if->dev_if->dev_global_regs->doepmsk);
+
+       for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+               dr->diepctl[i] =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl);
+               dr->dieptsiz[i] =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->dieptsiz);
+               dr->diepdma[i] =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepdma);
+       }
+
+       DWC_DEBUGPL(DBG_ANY,
+                   "=============Backing Host registers==============\n");
+       DWC_DEBUGPL(DBG_ANY, "Backed up dcfg            = %08x\n", dr->dcfg);
+       DWC_DEBUGPL(DBG_ANY, "Backed up dctl        = %08x\n", dr->dctl);
+       DWC_DEBUGPL(DBG_ANY, "Backed up daintmsk            = %08x\n",
+                   dr->daintmsk);
+       DWC_DEBUGPL(DBG_ANY, "Backed up diepmsk        = %08x\n", dr->diepmsk);
+       DWC_DEBUGPL(DBG_ANY, "Backed up doepmsk        = %08x\n", dr->doepmsk);
+       for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+               DWC_DEBUGPL(DBG_ANY, "Backed up diepctl[%d]        = %08x\n", i,
+                           dr->diepctl[i]);
+               DWC_DEBUGPL(DBG_ANY, "Backed up dieptsiz[%d]        = %08x\n",
+                           i, dr->dieptsiz[i]);
+               DWC_DEBUGPL(DBG_ANY, "Backed up diepdma[%d]        = %08x\n", i,
+                           dr->diepdma[i]);
+       }
+
+       return 0;
+}
+
+int dwc_otg_save_host_regs(dwc_otg_core_if_t * core_if)
+{
+       struct dwc_otg_host_regs_backup *hr;
+       int i;
+
+       hr = core_if->hr_backup;
+       if (!hr) {
+               hr = DWC_ALLOC(sizeof(*hr));
+               if (!hr) {
+                       return -DWC_E_NO_MEMORY;
+               }
+               core_if->hr_backup = hr;
+       }
+
+       hr->hcfg_local =
+           DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+       hr->haintmsk_local =
+           DWC_READ_REG32(&core_if->host_if->host_global_regs->haintmsk);
+       for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
+               hr->hcintmsk_local[i] =
+                   DWC_READ_REG32(&core_if->host_if->hc_regs[i]->hcintmsk);
+       }
+       hr->hprt0_local = DWC_READ_REG32(core_if->host_if->hprt0);
+       hr->hfir_local =
+           DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
+
+       DWC_DEBUGPL(DBG_ANY,
+                   "=============Backing Host registers===============\n");
+       DWC_DEBUGPL(DBG_ANY, "Backed up hcfg            = %08x\n",
+                   hr->hcfg_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up haintmsk = %08x\n", hr->haintmsk_local);
+       for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
+               DWC_DEBUGPL(DBG_ANY, "Backed up hcintmsk[%02d]=%08x\n", i,
+                           hr->hcintmsk_local[i]);
+       }
+       DWC_DEBUGPL(DBG_ANY, "Backed up hprt0           = %08x\n",
+                   hr->hprt0_local);
+       DWC_DEBUGPL(DBG_ANY, "Backed up hfir           = %08x\n",
+                   hr->hfir_local);
+
+       return 0;
+}
+
+int dwc_otg_restore_global_regs(dwc_otg_core_if_t *core_if)
+{
+       struct dwc_otg_global_regs_backup *gr;
+       int i;
+
+       gr = core_if->gr_backup;
+       if (!gr) {
+               return -DWC_E_INVALID;
+       }
+   
+       DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, gr->gotgctl_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gr->gintmsk_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gr->gusbcfg_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gr->gahbcfg_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->grxfsiz, gr->grxfsiz_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gnptxfsiz,
+                       gr->gnptxfsiz_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->hptxfsiz,
+                       gr->hptxfsiz_local);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gdfifocfg,
+                       gr->gdfifocfg_local);
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               DWC_WRITE_REG32(&core_if->core_global_regs->dtxfsiz[i],
+                               gr->dtxfsiz_local[i]);
+       }
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+       DWC_WRITE_REG32(core_if->host_if->hprt0, 0x0000100A);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg,
+                       (gr->gahbcfg_local));
+       return 0;
+}
+
+int dwc_otg_restore_dev_regs(dwc_otg_core_if_t * core_if, int rem_wakeup)
+{
+       struct dwc_otg_dev_regs_backup *dr;
+       int i;
+
+       dr = core_if->dr_backup;
+
+       if (!dr) {
+               return -DWC_E_INVALID;
+       }
+
+       if (!rem_wakeup) {
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
+                               dr->dctl);
+       }
+       
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daintmsk, dr->daintmsk);
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->diepmsk, dr->diepmsk);
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->doepmsk, dr->doepmsk);
+
+       for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+               DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->dieptsiz, dr->dieptsiz[i]);
+               DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->diepdma, dr->diepdma[i]);
+               DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl, dr->diepctl[i]);
+       }
+       
+       return 0;
+}
+
+int dwc_otg_restore_host_regs(dwc_otg_core_if_t * core_if, int reset)
+{
+       struct dwc_otg_host_regs_backup *hr;
+       int i;
+       hr = core_if->hr_backup;
+
+       if (!hr) {
+               return -DWC_E_INVALID;
+       }
+
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hr->hcfg_local);
+       //if (!reset)
+       //{
+       //      DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hfir, hr->hfir_local);
+       //}
+
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haintmsk,
+                       hr->haintmsk_local);
+       for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
+               DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcintmsk,
+                               hr->hcintmsk_local[i]);
+       }
+
+       return 0;
+}
+
+int restore_lpm_i2c_regs(dwc_otg_core_if_t * core_if)
+{
+       struct dwc_otg_global_regs_backup *gr;
+
+       gr = core_if->gr_backup;
+
+       /* Restore values for LPM and I2C */
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, gr->glpmcfg_local);
+#endif
+       DWC_WRITE_REG32(&core_if->core_global_regs->gi2cctl, gr->gi2cctl_local);
+
+       return 0;
+}
+
+int restore_essential_regs(dwc_otg_core_if_t * core_if, int rmode, int is_host)
+{
+       struct dwc_otg_global_regs_backup *gr;
+       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+       gahbcfg_data_t gahbcfg = {.d32 = 0 };
+       gusbcfg_data_t gusbcfg = {.d32 = 0 };
+       gintmsk_data_t gintmsk = {.d32 = 0 };
+
+       /* Restore LPM and I2C registers */
+       restore_lpm_i2c_regs(core_if);
+
+       /* Set PCGCCTL to 0 */
+       DWC_WRITE_REG32(core_if->pcgcctl, 0x00000000);
+
+       gr = core_if->gr_backup;
+       /* Load restore values for [31:14] bits */
+       DWC_WRITE_REG32(core_if->pcgcctl,
+                       ((gr->pcgcctl_local & 0xffffc000) | 0x00020000));
+
+       /* Umnask global Interrupt in GAHBCFG and restore it */
+       gahbcfg.d32 = gr->gahbcfg_local;
+       gahbcfg.b.glblintrmsk = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gahbcfg.d32);
+
+       /* Clear all pending interupts */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+       /* Unmask restore done interrupt */
+       gintmsk.b.restoredone = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32);
+
+       /* Restore GUSBCFG and HCFG/DCFG */
+       gusbcfg.d32 = core_if->gr_backup->gusbcfg_local;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
+
+       if (is_host) {
+               hcfg_data_t hcfg = {.d32 = 0 };
+               hcfg.d32 = core_if->hr_backup->hcfg_local;
+               DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg,
+                               hcfg.d32);
+
+               /* Load restore values for [31:14] bits */
+               pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+               pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
+
+               if (rmode)
+                       pcgcctl.b.restoremode = 1;
+               DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+               dwc_udelay(10);
+
+               /* Load restore values for [31:14] bits and set EssRegRestored bit */
+               pcgcctl.d32 = gr->pcgcctl_local | 0xffffc000;
+               pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+               pcgcctl.b.ess_reg_restored = 1;
+               if (rmode)
+                       pcgcctl.b.restoremode = 1;
+               DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+       } else {
+               dcfg_data_t dcfg = {.d32 = 0 };
+               dcfg.d32 = core_if->dr_backup->dcfg;
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+               /* Load restore values for [31:14] bits */
+               pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+               pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
+               if (!rmode) {
+                       pcgcctl.d32 |= 0x208;
+               }
+               DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+               dwc_udelay(10);
+
+               /* Load restore values for [31:14] bits */
+               pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+               pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
+               pcgcctl.b.ess_reg_restored = 1;
+               if (!rmode)
+                       pcgcctl.d32 |= 0x208;
+               DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+       }
+
+       return 0;
+}
+
+/**
+ * Initializes the FSLSPClkSel field of the HCFG register depending on the PHY
+ * type.
+ */
+static void init_fslspclksel(dwc_otg_core_if_t * core_if)
+{
+       uint32_t val;
+       hcfg_data_t hcfg;
+
+       if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
+            (core_if->hwcfg2.b.fs_phy_type == 1) &&
+            (core_if->core_params->ulpi_fs_ls)) ||
+           (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+               /* Full speed PHY */
+               val = DWC_HCFG_48_MHZ;
+       } else {
+               /* High speed PHY running at full speed or high speed */
+               val = DWC_HCFG_30_60_MHZ;
+       }
+
+       DWC_DEBUGPL(DBG_CIL, "Initializing HCFG.FSLSPClkSel to 0x%1x\n", val);
+       hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+       hcfg.b.fslspclksel = val;
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+/**
+ * Initializes the DevSpd field of the DCFG register depending on the PHY type
+ * and the enumeration speed of the device.
+ */
+static void init_devspd(dwc_otg_core_if_t * core_if)
+{
+       uint32_t val;
+       dcfg_data_t dcfg;
+
+       if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
+            (core_if->hwcfg2.b.fs_phy_type == 1) &&
+            (core_if->core_params->ulpi_fs_ls)) ||
+           (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+               /* Full speed PHY */
+               val = 0x3;
+       } else if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+               /* High speed PHY running at full speed */
+               val = 0x1;
+       } else {
+               /* High speed PHY running at high speed */
+               val = 0x0;
+       }
+
+       DWC_DEBUGPL(DBG_CIL, "Initializing DCFG.DevSpd to 0x%1x\n", val);
+
+       dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+       dcfg.b.devspd = val;
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+}
+
+/**
+ * This function calculates the number of IN EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ */
+static uint32_t calc_num_in_eps(dwc_otg_core_if_t * core_if)
+{
+       uint32_t num_in_eps = 0;
+       uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
+       uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 3;
+       uint32_t num_tx_fifos = core_if->hwcfg4.b.num_in_eps;
+       int i;
+
+       for (i = 0; i < num_eps; ++i) {
+               if (!(hwcfg1 & 0x1))
+                       num_in_eps++;
+
+               hwcfg1 >>= 2;
+       }
+
+       if (core_if->hwcfg4.b.ded_fifo_en) {
+               num_in_eps =
+                   (num_in_eps > num_tx_fifos) ? num_tx_fifos : num_in_eps;
+       }
+
+       return num_in_eps;
+}
+
+/**
+ * This function calculates the number of OUT EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ */
+static uint32_t calc_num_out_eps(dwc_otg_core_if_t * core_if)
+{
+       uint32_t num_out_eps = 0;
+       uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
+       uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 2;
+       int i;
+
+       for (i = 0; i < num_eps; ++i) {
+               if (!(hwcfg1 & 0x1))
+                       num_out_eps++;
+
+               hwcfg1 >>= 2;
+       }
+       return num_out_eps;
+}
+
+/**
+ * This function initializes the DWC_otg controller registers and
+ * prepares the core for device mode or host mode operation.
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ *
+ */
+void dwc_otg_core_init(dwc_otg_core_if_t * core_if)
+{
+       int i = 0;
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       gahbcfg_data_t ahbcfg = {.d32 = 0 };
+       gusbcfg_data_t usbcfg = {.d32 = 0 };
+       gi2cctl_data_t i2cctl = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_CILV, "dwc_otg_core_init(%p) regs at %p\n",
+                    core_if, global_regs);
+
+       /* Common Initialization */
+       usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+
+       /* Program the ULPI External VBUS bit if needed */
+       usbcfg.b.ulpi_ext_vbus_drv =
+           (core_if->core_params->phy_ulpi_ext_vbus ==
+            DWC_PHY_ULPI_EXTERNAL_VBUS) ? 1 : 0;
+
+       /* Set external TS Dline pulsing */
+       usbcfg.b.term_sel_dl_pulse =
+           (core_if->core_params->ts_dline == 1) ? 1 : 0;
+       DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+       /* Reset the Controller */
+       dwc_otg_core_reset(core_if);
+
+       core_if->adp_enable = core_if->core_params->adp_supp_enable;
+       core_if->power_down = core_if->core_params->power_down;
+       core_if->otg_sts = 0;
+
+       /* Initialize parameters from Hardware configuration registers. */
+       dev_if->num_in_eps = calc_num_in_eps(core_if);
+       dev_if->num_out_eps = calc_num_out_eps(core_if);
+
+       DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n",
+                   core_if->hwcfg4.b.num_dev_perio_in_ep);
+
+       for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
+               dev_if->perio_tx_fifo_size[i] =
+                   DWC_READ_REG32(&global_regs->dtxfsiz[i]) >> 16;
+               DWC_DEBUGPL(DBG_CIL, "Periodic Tx FIFO SZ #%d=0x%0x\n",
+                           i, dev_if->perio_tx_fifo_size[i]);
+       }
+
+       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+               dev_if->tx_fifo_size[i] =
+                   DWC_READ_REG32(&global_regs->dtxfsiz[i]) >> 16;
+               DWC_DEBUGPL(DBG_CIL, "Tx FIFO SZ #%d=0x%0x\n",
+                           i, dev_if->tx_fifo_size[i]);
+       }
+
+       core_if->total_fifo_size = core_if->hwcfg3.b.dfifo_depth;
+       core_if->rx_fifo_size = DWC_READ_REG32(&global_regs->grxfsiz);
+       core_if->nperio_tx_fifo_size =
+           DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16;
+
+       DWC_DEBUGPL(DBG_CIL, "Total FIFO SZ=%d\n", core_if->total_fifo_size);
+       DWC_DEBUGPL(DBG_CIL, "Rx FIFO SZ=%d\n", core_if->rx_fifo_size);
+       DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO SZ=%d\n",
+                   core_if->nperio_tx_fifo_size);
+
+       /* This programming sequence needs to happen in FS mode before any other
+        * programming occurs */
+       if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) &&
+           (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+               /* If FS mode with FS PHY */
+
+               /* core_init() is now called on every switch so only call the
+                * following for the first time through. */
+               if (!core_if->phy_init_done) {
+                       core_if->phy_init_done = 1;
+                       DWC_DEBUGPL(DBG_CIL, "FS_PHY detected\n");
+                       usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+                       usbcfg.b.physel = 1;
+                       DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+                       /* Reset after a PHY select */
+                       dwc_otg_core_reset(core_if);
+               }
+
+               /* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.      Also
+                * do this on HNP Dev/Host mode switches (done in dev_init and
+                * host_init). */
+               if (dwc_otg_is_host_mode(core_if)) {
+                       init_fslspclksel(core_if);
+               } else {
+                       init_devspd(core_if);
+               }
+
+               if (core_if->core_params->i2c_enable) {
+                       DWC_DEBUGPL(DBG_CIL, "FS_PHY Enabling I2c\n");
+                       /* Program GUSBCFG.OtgUtmifsSel to I2C */
+                       usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+                       usbcfg.b.otgutmifssel = 1;
+                       DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+                       /* Program GI2CCTL.I2CEn */
+                       i2cctl.d32 = DWC_READ_REG32(&global_regs->gi2cctl);
+                       i2cctl.b.i2cdevaddr = 1;
+                       i2cctl.b.i2cen = 0;
+                       DWC_WRITE_REG32(&global_regs->gi2cctl, i2cctl.d32);
+                       i2cctl.b.i2cen = 1;
+                       DWC_WRITE_REG32(&global_regs->gi2cctl, i2cctl.d32);
+               }
+
+       } /* endif speed == DWC_SPEED_PARAM_FULL */
+       else {
+               /* High speed PHY. */
+               if (!core_if->phy_init_done) {
+                       core_if->phy_init_done = 1;
+                       /* HS PHY parameters.  These parameters are preserved
+                        * during soft reset so only program the first time.  Do
+                        * a soft reset immediately after setting phyif.  */
+
+                       if (core_if->core_params->phy_type == 2) {
+                               /* ULPI interface */
+                               usbcfg.b.ulpi_utmi_sel = 1;
+                               usbcfg.b.phyif = 0;
+                               usbcfg.b.ddrsel =
+                                   core_if->core_params->phy_ulpi_ddr;
+                       } else if (core_if->core_params->phy_type == 1) {
+                               /* UTMI+ interface */
+                               usbcfg.b.ulpi_utmi_sel = 0;
+                               if (core_if->core_params->phy_utmi_width == 16) {
+                                       usbcfg.b.phyif = 1;
+
+                               } else {
+                                       usbcfg.b.phyif = 0;
+                               }
+                       } else {
+                               DWC_ERROR("FS PHY TYPE\n");
+                       }
+                       DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+                       /* Reset after setting the PHY parameters */
+                       dwc_otg_core_reset(core_if);
+               }
+       }
+
+       if ((core_if->hwcfg2.b.hs_phy_type == 2) &&
+           (core_if->hwcfg2.b.fs_phy_type == 1) &&
+           (core_if->core_params->ulpi_fs_ls)) {
+               DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS\n");
+               usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+               usbcfg.b.ulpi_fsls = 1;
+               usbcfg.b.ulpi_clk_sus_m = 1;
+               DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+       } else {
+               usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+               usbcfg.b.ulpi_fsls = 0;
+               usbcfg.b.ulpi_clk_sus_m = 0;
+               DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+       }
+
+       /* Program the GAHBCFG Register. */
+       switch (core_if->hwcfg2.b.architecture) {
+
+       case DWC_SLAVE_ONLY_ARCH:
+               DWC_DEBUGPL(DBG_CIL, "Slave Only Mode\n");
+               ahbcfg.b.nptxfemplvl_txfemplvl =
+                   DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+               ahbcfg.b.ptxfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+               core_if->dma_enable = 0;
+               core_if->dma_desc_enable = 0;
+               break;
+
+       case DWC_EXT_DMA_ARCH:
+               DWC_DEBUGPL(DBG_CIL, "External DMA Mode\n");
+               {
+                       uint8_t brst_sz = core_if->core_params->dma_burst_size;
+                       ahbcfg.b.hburstlen = 0;
+                       while (brst_sz > 1) {
+                               ahbcfg.b.hburstlen++;
+                               brst_sz >>= 1;
+                       }
+               }
+               core_if->dma_enable = (core_if->core_params->dma_enable != 0);
+               core_if->dma_desc_enable =
+                   (core_if->core_params->dma_desc_enable != 0);
+               break;
+
+       case DWC_INT_DMA_ARCH:
+               DWC_DEBUGPL(DBG_CIL, "Internal DMA Mode\n");
+               /* Old value was DWC_GAHBCFG_INT_DMA_BURST_INCR - done for 
+                 Host mode ISOC in issue fix - vahrama */
+               /* Broadcom had altered to (1<<3)|(0<<0) - WRESP=1, max 4 beats */
+               ahbcfg.b.hburstlen = (1<<3)|(0<<0);//DWC_GAHBCFG_INT_DMA_BURST_INCR4;
+               core_if->dma_enable = (core_if->core_params->dma_enable != 0);
+               core_if->dma_desc_enable =
+                   (core_if->core_params->dma_desc_enable != 0);
+               break;
+
+       }
+       if (core_if->dma_enable) {
+               if (core_if->dma_desc_enable) {
+                       DWC_PRINTF("Using Descriptor DMA mode\n");
+               } else {
+                       DWC_PRINTF("Using Buffer DMA mode\n");
+
+               }
+       } else {
+               DWC_PRINTF("Using Slave mode\n");
+               core_if->dma_desc_enable = 0;
+       }
+
+       if (core_if->core_params->ahb_single) {
+               ahbcfg.b.ahbsingle = 1;
+       }
+       
+       ahbcfg.b.dmaenable = core_if->dma_enable;
+       DWC_WRITE_REG32(&global_regs->gahbcfg, ahbcfg.d32);
+
+       core_if->en_multiple_tx_fifo = core_if->hwcfg4.b.ded_fifo_en;
+
+       core_if->pti_enh_enable = core_if->core_params->pti_enable != 0;
+       core_if->multiproc_int_enable = core_if->core_params->mpi_enable;
+       DWC_PRINTF("Periodic Transfer Interrupt Enhancement - %s\n",
+                  ((core_if->pti_enh_enable) ? "enabled" : "disabled"));
+       DWC_PRINTF("Multiprocessor Interrupt Enhancement - %s\n",
+                  ((core_if->multiproc_int_enable) ? "enabled" : "disabled"));
+
+       /*
+        * Program the GUSBCFG register.
+        */
+       usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+
+       switch (core_if->hwcfg2.b.op_mode) {
+       case DWC_MODE_HNP_SRP_CAPABLE:
+               usbcfg.b.hnpcap = (core_if->core_params->otg_cap ==
+                                  DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
+               usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+                                  DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+               break;
+
+       case DWC_MODE_SRP_ONLY_CAPABLE:
+               usbcfg.b.hnpcap = 0;
+               usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+                                  DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+               break;
+
+       case DWC_MODE_NO_HNP_SRP_CAPABLE:
+               usbcfg.b.hnpcap = 0;
+               usbcfg.b.srpcap = 0;
+               break;
+
+       case DWC_MODE_SRP_CAPABLE_DEVICE:
+               usbcfg.b.hnpcap = 0;
+               usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+                                  DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+               break;
+
+       case DWC_MODE_NO_SRP_CAPABLE_DEVICE:
+               usbcfg.b.hnpcap = 0;
+               usbcfg.b.srpcap = 0;
+               break;
+
+       case DWC_MODE_SRP_CAPABLE_HOST:
+               usbcfg.b.hnpcap = 0;
+               usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+                                  DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+               break;
+
+       case DWC_MODE_NO_SRP_CAPABLE_HOST:
+               usbcfg.b.hnpcap = 0;
+               usbcfg.b.srpcap = 0;
+               break;
+       }
+
+       DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       if (core_if->core_params->lpm_enable) {
+               glpmcfg_data_t lpmcfg = {.d32 = 0 };
+
+               /* To enable LPM support set lpm_cap_en bit */
+               lpmcfg.b.lpm_cap_en = 1;
+
+               /* Make AppL1Res ACK */
+               lpmcfg.b.appl_resp = 1;
+
+               /* Retry 3 times */
+               lpmcfg.b.retry_count = 3;
+
+               DWC_MODIFY_REG32(&core_if->core_global_regs->glpmcfg,
+                                0, lpmcfg.d32);
+
+       }
+#endif
+       if (core_if->core_params->ic_usb_cap) {
+               gusbcfg_data_t gusbcfg = {.d32 = 0 };
+               gusbcfg.b.ic_usb_cap = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gusbcfg,
+                                0, gusbcfg.d32);
+       }
+       {
+               gotgctl_data_t gotgctl = {.d32 = 0 };
+               gotgctl.b.otgver = core_if->core_params->otg_ver;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gotgctl, 0,
+                                gotgctl.d32);
+               /* Set OTG version supported */
+               core_if->otg_ver = core_if->core_params->otg_ver;
+               DWC_PRINTF("OTG VER PARAM: %d, OTG VER FLAG: %d\n",
+                          core_if->core_params->otg_ver, core_if->otg_ver);
+       }
+       
+
+       /* Enable common interrupts */
+       dwc_otg_enable_common_interrupts(core_if);
+
+       /* Do device or host intialization based on mode during PCD
+        * and HCD initialization  */
+       if (dwc_otg_is_host_mode(core_if)) {
+               DWC_DEBUGPL(DBG_ANY, "Host Mode\n");
+               core_if->op_state = A_HOST;
+       } else {
+               DWC_DEBUGPL(DBG_ANY, "Device Mode\n");
+               core_if->op_state = B_PERIPHERAL;
+#ifdef DWC_DEVICE_ONLY
+               dwc_otg_core_dev_init(core_if);
+#endif
+       }
+}
+
+/**
+ * This function enables the Device mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * core_if)
+{
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+
+       DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
+
+       /* Disable all interrupts. */
+       DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+       /* Clear any pending interrupts */
+       DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
+
+       /* Enable the common interrupts */
+       dwc_otg_enable_common_interrupts(core_if);
+
+       /* Enable interrupts */
+       intr_mask.b.usbreset = 1;
+       intr_mask.b.enumdone = 1;
+       /* Disable Disconnect interrupt in Device mode */
+       intr_mask.b.disconnect = 0;
+
+       if (!core_if->multiproc_int_enable) {
+               intr_mask.b.inepintr = 1;
+               intr_mask.b.outepintr = 1;
+       }
+
+       intr_mask.b.erlysuspend = 1;
+
+       if (core_if->en_multiple_tx_fifo == 0) {
+               intr_mask.b.epmismatch = 1;
+       }
+
+       //intr_mask.b.incomplisoout = 1;
+       intr_mask.b.incomplisoin = 1;
+       
+/* Enable the ignore frame number for ISOC xfers - MAS */
+/* Disable to support high bandwith ISOC transfers - manukz */
+#if 0
+#ifdef DWC_UTE_PER_IO
+       if (core_if->dma_enable) {
+               if (core_if->dma_desc_enable) {
+                       dctl_data_t dctl1 = {.d32 = 0 };
+                       dctl1.b.ifrmnum = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                        dctl, 0, dctl1.d32);
+                       DWC_DEBUG("----Enabled Ignore frame number (0x%08x)",
+                                 DWC_READ_REG32(&core_if->dev_if->
+                                                dev_global_regs->dctl));
+               }
+       }
+#endif
+#endif
+#ifdef DWC_EN_ISOC
+       if (core_if->dma_enable) {
+               if (core_if->dma_desc_enable == 0) {
+                       if (core_if->pti_enh_enable) {
+                               dctl_data_t dctl = {.d32 = 0 };
+                               dctl.b.ifrmnum = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                dev_if->dev_global_regs->dctl,
+                                                0, dctl.d32);
+                       } else {
+                               intr_mask.b.incomplisoin = 1;
+                               intr_mask.b.incomplisoout = 1;
+                       }
+               }
+       } else {
+               intr_mask.b.incomplisoin = 1;
+               intr_mask.b.incomplisoout = 1;
+       }
+#endif /* DWC_EN_ISOC */
+
+       /** @todo NGS: Should this be a module parameter? */
+#ifdef USE_PERIODIC_EP
+       intr_mask.b.isooutdrop = 1;
+       intr_mask.b.eopframe = 1;
+       intr_mask.b.incomplisoin = 1;
+       intr_mask.b.incomplisoout = 1;
+#endif
+
+       DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+
+       DWC_DEBUGPL(DBG_CIL, "%s() gintmsk=%0x\n", __func__,
+                   DWC_READ_REG32(&global_regs->gintmsk));
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * device mode.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_dev_init(dwc_otg_core_if_t * core_if)
+{
+       int i;
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       dwc_otg_core_params_t *params = core_if->core_params;
+       dcfg_data_t dcfg = {.d32 = 0 };
+       depctl_data_t diepctl = {.d32 = 0 };
+       grstctl_t resetctl = {.d32 = 0 };
+       uint32_t rx_fifo_size;
+       fifosize_data_t nptxfifosize;
+       fifosize_data_t txfifosize;
+       dthrctl_data_t dthrctl;
+       fifosize_data_t ptxfifosize;
+       uint16_t rxfsiz, nptxfsiz;
+       gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+       hwcfg3_data_t hwcfg3 = {.d32 = 0 };
+
+       /* Restart the Phy Clock */
+       DWC_WRITE_REG32(core_if->pcgcctl, 0);
+
+       /* Device configuration register */
+       init_devspd(core_if);
+       dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+       dcfg.b.descdma = (core_if->dma_desc_enable) ? 1 : 0;
+       dcfg.b.perfrint = DWC_DCFG_FRAME_INTERVAL_80;
+       /* Enable Device OUT NAK in case of DDMA mode*/
+       if (core_if->core_params->dev_out_nak) {
+               dcfg.b.endevoutnak = 1;         
+       }
+
+       if (core_if->core_params->cont_on_bna) {
+               dctl_data_t dctl = {.d32 = 0 };
+               dctl.b.encontonbna = 1;
+               DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
+       }
+       
+
+       DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+       /* Configure data FIFO sizes */
+       if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+               DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n",
+                           core_if->total_fifo_size);
+               DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n",
+                           params->dev_rx_fifo_size);
+               DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",
+                           params->dev_nperio_tx_fifo_size);
+
+               /* Rx FIFO */
+               DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->grxfsiz));
+
+#ifdef DWC_UTE_CFI
+               core_if->pwron_rxfsiz = DWC_READ_REG32(&global_regs->grxfsiz);
+               core_if->init_rxfsiz = params->dev_rx_fifo_size;
+#endif
+               rx_fifo_size = params->dev_rx_fifo_size;
+               DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fifo_size);
+
+               DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->grxfsiz));
+
+               /** Set Periodic Tx FIFO Mask all bits 0 */
+               core_if->p_tx_msk = 0;
+
+               /** Set Tx FIFO Mask all bits 0 */
+               core_if->tx_msk = 0;
+
+               if (core_if->en_multiple_tx_fifo == 0) {
+                       /* Non-periodic Tx FIFO */
+                       DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+                                   DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+                       nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+                       nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+
+                       DWC_WRITE_REG32(&global_regs->gnptxfsiz,
+                                       nptxfifosize.d32);
+
+                       DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+                                   DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+                       /**@todo NGS: Fix Periodic FIFO Sizing! */
+                       /*
+                        * Periodic Tx FIFOs These FIFOs are numbered from 1 to 15.
+                        * Indexes of the FIFO size module parameters in the
+                        * dev_perio_tx_fifo_size array and the FIFO size registers in
+                        * the dptxfsiz array run from 0 to 14.
+                        */
+                       /** @todo Finish debug of this */
+                       ptxfifosize.b.startaddr =
+                           nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+                       for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
+                               ptxfifosize.b.depth =
+                                   params->dev_perio_tx_fifo_size[i];
+                               DWC_DEBUGPL(DBG_CIL,
+                                           "initial dtxfsiz[%d]=%08x\n", i,
+                                           DWC_READ_REG32(&global_regs->dtxfsiz
+                                                          [i]));
+                               DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+                                               ptxfifosize.d32);
+                               DWC_DEBUGPL(DBG_CIL, "new dtxfsiz[%d]=%08x\n",
+                                           i,
+                                           DWC_READ_REG32(&global_regs->dtxfsiz
+                                                          [i]));
+                               ptxfifosize.b.startaddr += ptxfifosize.b.depth;
+                       }
+               } else {
+                       /*
+                        * Tx FIFOs These FIFOs are numbered from 1 to 15.
+                        * Indexes of the FIFO size module parameters in the
+                        * dev_tx_fifo_size array and the FIFO size registers in
+                        * the dtxfsiz array run from 0 to 14.
+                        */
+
+                       /* Non-periodic Tx FIFO */
+                       DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+                                   DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+#ifdef DWC_UTE_CFI
+                       core_if->pwron_gnptxfsiz =
+                           (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
+                       core_if->init_gnptxfsiz =
+                           params->dev_nperio_tx_fifo_size;
+#endif
+                       nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+                       nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+
+                       DWC_WRITE_REG32(&global_regs->gnptxfsiz,
+                                       nptxfifosize.d32);
+
+                       DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+                                   DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+                       txfifosize.b.startaddr =
+                           nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+
+                       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+
+                               txfifosize.b.depth =
+                                   params->dev_tx_fifo_size[i];
+
+                               DWC_DEBUGPL(DBG_CIL,
+                                           "initial dtxfsiz[%d]=%08x\n",
+                                           i,
+                                           DWC_READ_REG32(&global_regs->dtxfsiz
+                                                          [i]));
+
+#ifdef DWC_UTE_CFI
+                               core_if->pwron_txfsiz[i] =
+                                   (DWC_READ_REG32
+                                    (&global_regs->dtxfsiz[i]) >> 16);
+                               core_if->init_txfsiz[i] =
+                                   params->dev_tx_fifo_size[i];
+#endif
+                               DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+                                               txfifosize.d32);
+
+                               DWC_DEBUGPL(DBG_CIL,
+                                           "new dtxfsiz[%d]=%08x\n",
+                                           i,
+                                           DWC_READ_REG32(&global_regs->dtxfsiz
+                                                          [i]));
+
+                               txfifosize.b.startaddr += txfifosize.b.depth;
+                       }
+                       if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
+                               /* Calculating DFIFOCFG for Device mode to include RxFIFO and NPTXFIFO */
+                               gdfifocfg.d32 = DWC_READ_REG32(&global_regs->gdfifocfg);
+                               hwcfg3.d32 = DWC_READ_REG32(&global_regs->ghwcfg3);
+                               gdfifocfg.b.gdfifocfg = (DWC_READ_REG32(&global_regs->ghwcfg3) >> 16);
+                               DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
+                               rxfsiz = (DWC_READ_REG32(&global_regs->grxfsiz) & 0x0000ffff);
+                               nptxfsiz = (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
+                               gdfifocfg.b.epinfobase = rxfsiz + nptxfsiz;
+                               DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
+                       }
+               }
+
+               /* Flush the FIFOs */
+               dwc_otg_flush_tx_fifo(core_if, 0x10);   /* all Tx FIFOs */
+               dwc_otg_flush_rx_fifo(core_if);
+
+               /* Flush the Learning Queue. */
+               resetctl.b.intknqflsh = 1;
+               DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+               if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable) {
+                       core_if->start_predict = 0;
+                       for (i = 0; i<= core_if->dev_if->num_in_eps; ++i) {
+                               core_if->nextep_seq[i] = 0xff;  // 0xff - EP not active
+                       }
+                       core_if->nextep_seq[0] = 0;
+                       core_if->first_in_nextep_seq = 0;
+                       diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
+                       diepctl.b.nextep = 0;
+                       DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+               
+                       /* Update IN Endpoint Mismatch Count by active IN NP EP count + 1 */
+                       dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+                       dcfg.b.epmscnt = 2;
+                       DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+                       DWC_DEBUGPL(DBG_CILV,"%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+                               __func__, core_if->first_in_nextep_seq);
+                       for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+                               DWC_DEBUGPL(DBG_CILV, "%2d ", core_if->nextep_seq[i]);
+                       }
+                       DWC_DEBUGPL(DBG_CILV,"\n");
+               }
+       
+               /* Clear all pending Device Interrupts */
+               /** @todo - if the condition needed to be checked
+                *  or in any case all pending interrutps should be cleared?
+            */
+               if (core_if->multiproc_int_enable) {
+                       for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+                               DWC_WRITE_REG32(&dev_if->
+                                               dev_global_regs->diepeachintmsk[i], 0);
+                       }
+               }
+
+               for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+                       DWC_WRITE_REG32(&dev_if->
+                                       dev_global_regs->doepeachintmsk[i], 0);
+               }
+
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->deachint, 0xFFFFFFFF);
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->deachintmsk, 0);
+       } else {
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->diepmsk, 0);
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->doepmsk, 0);
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->daint, 0xFFFFFFFF);
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->daintmsk, 0);
+       }
+
+       for (i = 0; i <= dev_if->num_in_eps; i++) {
+               depctl_data_t depctl;
+               depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+               if (depctl.b.epena) {
+                       depctl.d32 = 0;
+                       depctl.b.epdis = 1;
+                       depctl.b.snak = 1;
+               } else {
+                       depctl.d32 = 0;
+               }
+
+               DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+
+               DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->dieptsiz, 0);
+               DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepdma, 0);
+               DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepint, 0xFF);
+       }
+
+       for (i = 0; i <= dev_if->num_out_eps; i++) {
+               depctl_data_t depctl;
+               depctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
+               if (depctl.b.epena) {
+                       dctl_data_t dctl = {.d32 = 0 };
+                       gintmsk_data_t gintsts = {.d32 = 0 };
+                       doepint_data_t doepint = {.d32 = 0 };
+                       dctl.b.sgoutnak = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+                       do {
+                               dwc_udelay(10);
+                               gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+                       } while (!gintsts.b.goutnakeff);
+                       gintsts.d32 = 0;
+                       gintsts.b.goutnakeff = 1;
+                       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+                       depctl.d32 = 0;
+                       depctl.b.epdis = 1;
+                       depctl.b.snak = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->doepctl, depctl.d32);
+                       do {
+                               dwc_udelay(10);
+                               doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                       out_ep_regs[i]->doepint);
+                       } while (!doepint.b.epdisabled);
+
+                       doepint.b.epdisabled = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->doepint, doepint.d32);
+
+                       dctl.d32 = 0;
+                       dctl.b.cgoutnak = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+               } else {
+                       depctl.d32 = 0;
+               }
+
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, depctl.d32);
+
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doeptsiz, 0);
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepdma, 0);
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepint, 0xFF);
+       }
+
+       if (core_if->en_multiple_tx_fifo && core_if->dma_enable) {
+               dev_if->non_iso_tx_thr_en = params->thr_ctl & 0x1;
+               dev_if->iso_tx_thr_en = (params->thr_ctl >> 1) & 0x1;
+               dev_if->rx_thr_en = (params->thr_ctl >> 2) & 0x1;
+
+               dev_if->rx_thr_length = params->rx_thr_length;
+               dev_if->tx_thr_length = params->tx_thr_length;
+
+               dev_if->setup_desc_index = 0;
+
+               dthrctl.d32 = 0;
+               dthrctl.b.non_iso_thr_en = dev_if->non_iso_tx_thr_en;
+               dthrctl.b.iso_thr_en = dev_if->iso_tx_thr_en;
+               dthrctl.b.tx_thr_len = dev_if->tx_thr_length;
+               dthrctl.b.rx_thr_en = dev_if->rx_thr_en;
+               dthrctl.b.rx_thr_len = dev_if->rx_thr_length;
+               dthrctl.b.ahb_thr_ratio = params->ahb_thr_ratio;
+
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->dtknqr3_dthrctl,
+                               dthrctl.d32);
+
+               DWC_DEBUGPL(DBG_CIL,
+                           "Non ISO Tx Thr - %d\nISO Tx Thr - %d\nRx Thr - %d\nTx Thr Len - %d\nRx Thr Len - %d\n",
+                           dthrctl.b.non_iso_thr_en, dthrctl.b.iso_thr_en,
+                           dthrctl.b.rx_thr_en, dthrctl.b.tx_thr_len,
+                           dthrctl.b.rx_thr_len);
+
+       }
+
+       dwc_otg_enable_device_interrupts(core_if);
+
+       {
+               diepmsk_data_t msk = {.d32 = 0 };
+               msk.b.txfifoundrn = 1;
+               if (core_if->multiproc_int_enable) {
+                       DWC_MODIFY_REG32(&dev_if->dev_global_regs->
+                                        diepeachintmsk[0], msk.d32, msk.d32);
+               } else {
+                       DWC_MODIFY_REG32(&dev_if->dev_global_regs->diepmsk,
+                                        msk.d32, msk.d32);
+               }
+       }
+
+       if (core_if->multiproc_int_enable) {
+               /* Set NAK on Babble */
+               dctl_data_t dctl = {.d32 = 0 };
+               dctl.b.nakonbble = 1;
+               DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
+       }
+
+       if (core_if->snpsid >= OTG_CORE_REV_2_94a) {
+               dctl_data_t dctl = {.d32 = 0 };
+               dctl.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dctl);
+               dctl.b.sftdiscon = 0;
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->dctl, dctl.d32);
+       }
+}
+
+/**
+ * This function enables the Host mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_CIL, "%s(%p)\n", __func__, core_if);
+
+       /* Disable all interrupts. */
+       DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+       /* Clear any pending interrupts. */
+       DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
+
+       /* Enable the common interrupts */
+       dwc_otg_enable_common_interrupts(core_if);
+
+       /*
+        * Enable host mode interrupts without disturbing common
+        * interrupts.
+        */
+
+       intr_mask.b.disconnect = 1;
+       intr_mask.b.portintr = 1;
+       intr_mask.b.hcintr = 1;
+
+       DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+}
+
+/**
+ * This function disables the Host Mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_CILV, "%s()\n", __func__);
+
+       /*
+        * Disable host mode interrupts without disturbing common
+        * interrupts.
+        */
+       intr_mask.b.sofintr = 1;
+       intr_mask.b.portintr = 1;
+       intr_mask.b.hcintr = 1;
+       intr_mask.b.ptxfempty = 1;
+       intr_mask.b.nptxfempty = 1;
+
+       DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, 0);
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * host mode.
+ *
+ * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
+ * request queues. Host channels are reset to ensure that they are ready for
+ * performing transfers.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_host_init(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       dwc_otg_host_if_t *host_if = core_if->host_if;
+       dwc_otg_core_params_t *params = core_if->core_params;
+       hprt0_data_t hprt0 = {.d32 = 0 };
+       fifosize_data_t nptxfifosize;
+       fifosize_data_t ptxfifosize;
+       uint16_t rxfsiz, nptxfsiz, hptxfsiz;
+       gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+       int i;
+       hcchar_data_t hcchar;
+       hcfg_data_t hcfg;
+       hfir_data_t hfir;
+       dwc_otg_hc_regs_t *hc_regs;
+       int num_channels;
+       gotgctl_data_t gotgctl = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, core_if);
+
+       /* Restart the Phy Clock */
+       DWC_WRITE_REG32(core_if->pcgcctl, 0);
+
+       /* Initialize Host Configuration Register */
+       init_fslspclksel(core_if);
+       if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+               hcfg.d32 = DWC_READ_REG32(&host_if->host_global_regs->hcfg);
+               hcfg.b.fslssupp = 1;
+               DWC_WRITE_REG32(&host_if->host_global_regs->hcfg, hcfg.d32);
+
+       }
+
+       /* This bit allows dynamic reloading of the HFIR register
+        * during runtime. This bit needs to be programmed during 
+        * initial configuration and its value must not be changed
+        * during runtime.*/
+       if (core_if->core_params->reload_ctl == 1) {
+               hfir.d32 = DWC_READ_REG32(&host_if->host_global_regs->hfir);
+               hfir.b.hfirrldctrl = 1;
+               DWC_WRITE_REG32(&host_if->host_global_regs->hfir, hfir.d32);
+       }
+
+       if (core_if->core_params->dma_desc_enable) {
+               uint8_t op_mode = core_if->hwcfg2.b.op_mode;
+               if (!
+                   (core_if->hwcfg4.b.desc_dma
+                    && (core_if->snpsid >= OTG_CORE_REV_2_90a)
+                    && ((op_mode == DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+                        || (op_mode == DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
+                        || (op_mode ==
+                            DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG)
+                        || (op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)
+                        || (op_mode ==
+                            DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST)))) {
+
+                       DWC_ERROR("Host can't operate in Descriptor DMA mode.\n"
+                                 "Either core version is below 2.90a or "
+                                 "GHWCFG2, GHWCFG4 registers' values do not allow Descriptor DMA in host mode.\n"
+                                 "To run the driver in Buffer DMA host mode set dma_desc_enable "
+                                 "module parameter to 0.\n");
+                       return;
+               }
+               hcfg.d32 = DWC_READ_REG32(&host_if->host_global_regs->hcfg);
+               hcfg.b.descdma = 1;
+               DWC_WRITE_REG32(&host_if->host_global_regs->hcfg, hcfg.d32);
+       }
+
+       /* Configure data FIFO sizes */
+       if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+               DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n",
+                           core_if->total_fifo_size);
+               DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n",
+                           params->host_rx_fifo_size);
+               DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",
+                           params->host_nperio_tx_fifo_size);
+               DWC_DEBUGPL(DBG_CIL, "P Tx FIFO Size=%d\n",
+                           params->host_perio_tx_fifo_size);
+
+               /* Rx FIFO */
+               DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->grxfsiz));
+               DWC_WRITE_REG32(&global_regs->grxfsiz,
+                               params->host_rx_fifo_size);
+               DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->grxfsiz));
+
+               /* Non-periodic Tx FIFO */
+               DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->gnptxfsiz));
+               nptxfifosize.b.depth = params->host_nperio_tx_fifo_size;
+               nptxfifosize.b.startaddr = params->host_rx_fifo_size;
+               DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+               DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+               /* Periodic Tx FIFO */
+               DWC_DEBUGPL(DBG_CIL, "initial hptxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->hptxfsiz));
+               ptxfifosize.b.depth = params->host_perio_tx_fifo_size;
+               ptxfifosize.b.startaddr =
+                   nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+               DWC_WRITE_REG32(&global_regs->hptxfsiz, ptxfifosize.d32);
+               DWC_DEBUGPL(DBG_CIL, "new hptxfsiz=%08x\n",
+                           DWC_READ_REG32(&global_regs->hptxfsiz));
+               
+               if (core_if->en_multiple_tx_fifo
+                   && core_if->snpsid <= OTG_CORE_REV_2_94a) {
+                       /* Global DFIFOCFG calculation for Host mode - include RxFIFO, NPTXFIFO and HPTXFIFO */
+                       gdfifocfg.d32 = DWC_READ_REG32(&global_regs->gdfifocfg);
+                       rxfsiz = (DWC_READ_REG32(&global_regs->grxfsiz) & 0x0000ffff);
+                       nptxfsiz = (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
+                       hptxfsiz = (DWC_READ_REG32(&global_regs->hptxfsiz) >> 16);
+                       gdfifocfg.b.epinfobase = rxfsiz + nptxfsiz + hptxfsiz;
+                       DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
+               }
+       }
+
+       /* TODO - check this */
+       /* Clear Host Set HNP Enable in the OTG Control Register */
+       gotgctl.b.hstsethnpen = 1;
+       DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+       /* Make sure the FIFOs are flushed. */
+       dwc_otg_flush_tx_fifo(core_if, 0x10 /* all TX FIFOs */ );
+       dwc_otg_flush_rx_fifo(core_if);
+
+       /* Clear Host Set HNP Enable in the OTG Control Register */
+       gotgctl.b.hstsethnpen = 1;
+       DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+
+       if (!core_if->core_params->dma_desc_enable) {
+               /* Flush out any leftover queued requests. */
+               num_channels = core_if->core_params->host_channels;
+
+               for (i = 0; i < num_channels; i++) {
+                       hc_regs = core_if->host_if->hc_regs[i];
+                       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+                       hcchar.b.chen = 0;
+                       hcchar.b.chdis = 1;
+                       hcchar.b.epdir = 0;
+                       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+               }
+
+               /* Halt all channels to put them into a known state. */
+               for (i = 0; i < num_channels; i++) {
+                       int count = 0;
+                       hc_regs = core_if->host_if->hc_regs[i];
+                       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+                       hcchar.b.chen = 1;
+                       hcchar.b.chdis = 1;
+                       hcchar.b.epdir = 0;
+                       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+                       DWC_DEBUGPL(DBG_HCDV, "%s: Halt channel %d regs %p\n", __func__, i, hc_regs);
+                       do {
+                               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+                               if (++count > 1000) {
+                                       DWC_ERROR
+                                           ("%s: Unable to clear halt on channel %d (timeout HCCHAR 0x%X @%p)\n",
+                                            __func__, i, hcchar.d32, &hc_regs->hcchar);
+                                       break;
+                               }
+                               dwc_udelay(1);
+                       } while (hcchar.b.chen);
+               }
+       }
+
+       /* Turn on the vbus power. */
+       DWC_PRINTF("Init: Port Power? op_state=%d\n", core_if->op_state);
+       if (core_if->op_state == A_HOST) {
+               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+               DWC_PRINTF("Init: Power Port (%d)\n", hprt0.b.prtpwr);
+               if (hprt0.b.prtpwr == 0) {
+                       hprt0.b.prtpwr = 1;
+                       DWC_WRITE_REG32(host_if->hprt0, hprt0.d32);
+               }
+       }
+
+       dwc_otg_enable_host_interrupts(core_if);
+}
+
+/**
+ * Prepares a host channel for transferring packets to/from a specific
+ * endpoint. The HCCHARn register is set up with the characteristics specified
+ * in _hc. Host channel interrupts that may need to be serviced while this
+ * transfer is in progress are enabled.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ * @param hc Information needed to initialize the host channel
+ */
+void dwc_otg_hc_init(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       uint32_t intr_enable;
+       hcintmsk_data_t hc_intr_mask;
+       gintmsk_data_t gintmsk = {.d32 = 0 };
+       hcchar_data_t hcchar;
+       hcsplt_data_t hcsplt;
+
+       uint8_t hc_num = hc->hc_num;
+       dwc_otg_host_if_t *host_if = core_if->host_if;
+       dwc_otg_hc_regs_t *hc_regs = host_if->hc_regs[hc_num];
+
+       /* Clear old interrupt conditions for this host channel. */
+       hc_intr_mask.d32 = 0xFFFFFFFF;
+       hc_intr_mask.b.reserved14_31 = 0;
+       DWC_WRITE_REG32(&hc_regs->hcint, hc_intr_mask.d32);
+
+       /* Enable channel interrupts required for this transfer. */
+       hc_intr_mask.d32 = 0;
+       hc_intr_mask.b.chhltd = 1;
+       if (core_if->dma_enable) {
+               /* For Descriptor DMA mode core halts the channel on AHB error. Interrupt is not required */
+               if (!core_if->dma_desc_enable)
+                       hc_intr_mask.b.ahberr = 1;
+               else {
+                       if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+                               hc_intr_mask.b.xfercompl = 1;
+               }
+
+               if (hc->error_state && !hc->do_split &&
+                   hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+                       hc_intr_mask.b.ack = 1;
+                       if (hc->ep_is_in) {
+                               hc_intr_mask.b.datatglerr = 1;
+                               if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
+                                       hc_intr_mask.b.nak = 1;
+                               }
+                       }
+               }
+       } else {
+               switch (hc->ep_type) {
+               case DWC_OTG_EP_TYPE_CONTROL:
+               case DWC_OTG_EP_TYPE_BULK:
+                       hc_intr_mask.b.xfercompl = 1;
+                       hc_intr_mask.b.stall = 1;
+                       hc_intr_mask.b.xacterr = 1;
+                       hc_intr_mask.b.datatglerr = 1;
+                       if (hc->ep_is_in) {
+                               hc_intr_mask.b.bblerr = 1;
+                       } else {
+                               hc_intr_mask.b.nak = 1;
+                               hc_intr_mask.b.nyet = 1;
+                               if (hc->do_ping) {
+                                       hc_intr_mask.b.ack = 1;
+                               }
+                       }
+
+                       if (hc->do_split) {
+                               hc_intr_mask.b.nak = 1;
+                               if (hc->complete_split) {
+                                       hc_intr_mask.b.nyet = 1;
+                               } else {
+                                       hc_intr_mask.b.ack = 1;
+                               }
+                       }
+
+                       if (hc->error_state) {
+                               hc_intr_mask.b.ack = 1;
+                       }
+                       break;
+               case DWC_OTG_EP_TYPE_INTR:
+                       hc_intr_mask.b.xfercompl = 1;
+                       hc_intr_mask.b.nak = 1;
+                       hc_intr_mask.b.stall = 1;
+                       hc_intr_mask.b.xacterr = 1;
+                       hc_intr_mask.b.datatglerr = 1;
+                       hc_intr_mask.b.frmovrun = 1;
+
+                       if (hc->ep_is_in) {
+                               hc_intr_mask.b.bblerr = 1;
+                       }
+                       if (hc->error_state) {
+                               hc_intr_mask.b.ack = 1;
+                       }
+                       if (hc->do_split) {
+                               if (hc->complete_split) {
+                                       hc_intr_mask.b.nyet = 1;
+                               } else {
+                                       hc_intr_mask.b.ack = 1;
+                               }
+                       }
+                       break;
+               case DWC_OTG_EP_TYPE_ISOC:
+                       hc_intr_mask.b.xfercompl = 1;
+                       hc_intr_mask.b.frmovrun = 1;
+                       hc_intr_mask.b.ack = 1;
+
+                       if (hc->ep_is_in) {
+                               hc_intr_mask.b.xacterr = 1;
+                               hc_intr_mask.b.bblerr = 1;
+                       }
+                       break;
+               }
+       }
+       DWC_WRITE_REG32(&hc_regs->hcintmsk, hc_intr_mask.d32);
+
+       /* Enable the top level host channel interrupt. */
+       intr_enable = (1 << hc_num);
+       DWC_MODIFY_REG32(&host_if->host_global_regs->haintmsk, 0, intr_enable);
+
+       /* Make sure host channel interrupts are enabled. */
+       gintmsk.b.hcintr = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
+
+       /*
+        * Program the HCCHARn register with the endpoint characteristics for
+        * the current transfer.
+        */
+       hcchar.d32 = 0;
+       hcchar.b.devaddr = hc->dev_addr;
+       hcchar.b.epnum = hc->ep_num;
+       hcchar.b.epdir = hc->ep_is_in;
+       hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
+       hcchar.b.eptype = hc->ep_type;
+       hcchar.b.mps = hc->max_packet;
+
+       DWC_WRITE_REG32(&host_if->hc_regs[hc_num]->hcchar, hcchar.d32);
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d, Dev Addr %d, EP #%d\n",
+                    __func__, hc->hc_num, hcchar.b.devaddr, hcchar.b.epnum);
+       DWC_DEBUGPL(DBG_HCDV, "  Is In %d, Is Low Speed %d, EP Type %d, "
+                                "Max Pkt %d, Multi Cnt %d\n",
+                    hcchar.b.epdir, hcchar.b.lspddev, hcchar.b.eptype,
+                    hcchar.b.mps, hcchar.b.multicnt);
+
+       /*
+        * Program the HCSPLIT register for SPLITs
+        */
+       hcsplt.d32 = 0;
+       if (hc->do_split) {
+               DWC_DEBUGPL(DBG_HCDV, "Programming HC %d with split --> %s\n",
+                           hc->hc_num,
+                           hc->complete_split ? "CSPLIT" : "SSPLIT");
+               hcsplt.b.compsplt = hc->complete_split;
+               hcsplt.b.xactpos = hc->xact_pos;
+               hcsplt.b.hubaddr = hc->hub_addr;
+               hcsplt.b.prtaddr = hc->port_addr;
+               DWC_DEBUGPL(DBG_HCDV, "\t  comp split %d\n", hc->complete_split);
+               DWC_DEBUGPL(DBG_HCDV, "\t  xact pos %d\n", hc->xact_pos);
+               DWC_DEBUGPL(DBG_HCDV, "\t  hub addr %d\n", hc->hub_addr);
+               DWC_DEBUGPL(DBG_HCDV, "\t  port addr %d\n", hc->port_addr);
+               DWC_DEBUGPL(DBG_HCDV, "\t  is_in %d\n", hc->ep_is_in);
+               DWC_DEBUGPL(DBG_HCDV, "\t  Max Pkt: %d\n", hcchar.b.mps);
+               DWC_DEBUGPL(DBG_HCDV, "\t  xferlen: %d\n", hc->xfer_len);
+       }
+       DWC_WRITE_REG32(&host_if->hc_regs[hc_num]->hcsplt, hcsplt.d32);
+
+}
+
+/**
+ * Attempts to halt a host channel. This function should only be called in
+ * Slave mode or to abort a transfer in either Slave mode or DMA mode. Under
+ * normal circumstances in DMA mode, the controller halts the channel when the
+ * transfer is complete or a condition occurs that requires application
+ * intervention.
+ *
+ * In slave mode, checks for a free request queue entry, then sets the Channel
+ * Enable and Channel Disable bits of the Host Channel Characteristics
+ * register of the specified channel to intiate the halt. If there is no free
+ * request queue entry, sets only the Channel Disable bit of the HCCHARn
+ * register to flush requests for this channel. In the latter case, sets a
+ * flag to indicate that the host channel needs to be halted when a request
+ * queue slot is open.
+ *
+ * In DMA mode, always sets the Channel Enable and Channel Disable bits of the
+ * HCCHARn register. The controller ensures there is space in the request
+ * queue before submitting the halt request.
+ *
+ * Some time may elapse before the core flushes any posted requests for this
+ * host channel and halts. The Channel Halted interrupt handler completes the
+ * deactivation of the host channel.
+ *
+ * @param core_if Controller register interface.
+ * @param hc Host channel to halt.
+ * @param halt_status Reason for halting the channel.
+ */
+void dwc_otg_hc_halt(dwc_otg_core_if_t * core_if,
+                    dwc_hc_t * hc, dwc_otg_halt_status_e halt_status)
+{
+       gnptxsts_data_t nptxsts;
+       hptxsts_data_t hptxsts;
+       hcchar_data_t hcchar;
+       dwc_otg_hc_regs_t *hc_regs;
+       dwc_otg_core_global_regs_t *global_regs;
+       dwc_otg_host_global_regs_t *host_global_regs;
+
+       hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+       global_regs = core_if->core_global_regs;
+       host_global_regs = core_if->host_if->host_global_regs;
+
+       DWC_ASSERT(!(halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS),
+                  "halt_status = %d\n", halt_status);
+
+       if (halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+           halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+               /*
+                * Disable all channel interrupts except Ch Halted. The QTD
+                * and QH state associated with this transfer has been cleared
+                * (in the case of URB_DEQUEUE), so the channel needs to be
+                * shut down carefully to prevent crashes.
+                */
+               hcintmsk_data_t hcintmsk;
+               hcintmsk.d32 = 0;
+               hcintmsk.b.chhltd = 1;
+               DWC_WRITE_REG32(&hc_regs->hcintmsk, hcintmsk.d32);
+
+               /*
+                * Make sure no other interrupts besides halt are currently
+                * pending. Handling another interrupt could cause a crash due
+                * to the QTD and QH state.
+                */
+               DWC_WRITE_REG32(&hc_regs->hcint, ~hcintmsk.d32);
+
+               /*
+                * Make sure the halt status is set to URB_DEQUEUE or AHB_ERR
+                * even if the channel was already halted for some other
+                * reason.
+                */
+               hc->halt_status = halt_status;
+
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+               if (hcchar.b.chen == 0) {
+                       /*
+                        * The channel is either already halted or it hasn't
+                        * started yet. In DMA mode, the transfer may halt if
+                        * it finishes normally or a condition occurs that
+                        * requires driver intervention. Don't want to halt
+                        * the channel again. In either Slave or DMA mode,
+                        * it's possible that the transfer has been assigned
+                        * to a channel, but not started yet when an URB is
+                        * dequeued. Don't want to halt a channel that hasn't
+                        * started yet.
+                        */
+                       return;
+               }
+       }
+       if (hc->halt_pending) {
+               /*
+                * A halt has already been issued for this channel. This might
+                * happen when a transfer is aborted by a higher level in
+                * the stack.
+                */
+#ifdef DEBUG
+               DWC_PRINTF
+                   ("*** %s: Channel %d, _hc->halt_pending already set ***\n",
+                    __func__, hc->hc_num);
+
+#endif
+               return;
+       }
+
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* No need to set the bit in DDMA for disabling the channel */
+       //TODO check it everywhere channel is disabled          
+       if (!core_if->core_params->dma_desc_enable)
+               hcchar.b.chen = 1;
+       hcchar.b.chdis = 1;
+
+       if (!core_if->dma_enable) {
+               /* Check for space in the request queue to issue the halt. */
+               if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+                   hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+                       nptxsts.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+                       if (nptxsts.b.nptxqspcavail == 0) {
+                               hcchar.b.chen = 0;
+                       }
+               } else {
+                       hptxsts.d32 =
+                           DWC_READ_REG32(&host_global_regs->hptxsts);
+                       if ((hptxsts.b.ptxqspcavail == 0)
+                           || (core_if->queuing_high_bandwidth)) {
+                               hcchar.b.chen = 0;
+                       }
+               }
+       }
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+       hc->halt_status = halt_status;
+
+       if (hcchar.b.chen) {
+               hc->halt_pending = 1;
+               hc->halt_on_queue = 0;
+       } else {
+               hc->halt_on_queue = 1;
+       }
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+       DWC_DEBUGPL(DBG_HCDV, "  hcchar: 0x%08x\n", hcchar.d32);
+       DWC_DEBUGPL(DBG_HCDV, "  halt_pending: %d\n", hc->halt_pending);
+       DWC_DEBUGPL(DBG_HCDV, "  halt_on_queue: %d\n", hc->halt_on_queue);
+       DWC_DEBUGPL(DBG_HCDV, "  halt_status: %d\n", hc->halt_status);
+
+       return;
+}
+
+/**
+ * Clears the transfer state for a host channel. This function is normally
+ * called after a transfer is done and the host channel is being released.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Identifies the host channel to clean up.
+ */
+void dwc_otg_hc_cleanup(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       dwc_otg_hc_regs_t *hc_regs;
+
+       hc->xfer_started = 0;
+
+       /*
+        * Clear channel interrupt enables and any unhandled channel interrupt
+        * conditions.
+        */
+       hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+       DWC_WRITE_REG32(&hc_regs->hcintmsk, 0);
+       DWC_WRITE_REG32(&hc_regs->hcint, 0xFFFFFFFF);
+#ifdef DEBUG
+       DWC_TIMER_CANCEL(core_if->hc_xfer_timer[hc->hc_num]);
+#endif
+}
+
+/**
+ * Sets the channel property that indicates in which frame a periodic transfer
+ * should occur. This is always set to the _next_ frame. This function has no
+ * effect on non-periodic transfers.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Identifies the host channel to set up and its properties.
+ * @param hcchar Current value of the HCCHAR register for the specified host
+ * channel.
+ */
+static inline void hc_set_even_odd_frame(dwc_otg_core_if_t * core_if,
+                                        dwc_hc_t * hc, hcchar_data_t * hcchar)
+{
+       if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+           hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+               hfnum_data_t hfnum;
+               hfnum.d32 =
+                   DWC_READ_REG32(&core_if->host_if->host_global_regs->hfnum);
+
+               /* 1 if _next_ frame is odd, 0 if it's even */
+               hcchar->b.oddfrm = (hfnum.b.frnum & 0x1) ? 0 : 1;
+#ifdef DEBUG
+               if (hc->ep_type == DWC_OTG_EP_TYPE_INTR && hc->do_split
+                   && !hc->complete_split) {
+                       switch (hfnum.b.frnum & 0x7) {
+                       case 7:
+                               core_if->hfnum_7_samples++;
+                               core_if->hfnum_7_frrem_accum += hfnum.b.frrem;
+                               break;
+                       case 0:
+                               core_if->hfnum_0_samples++;
+                               core_if->hfnum_0_frrem_accum += hfnum.b.frrem;
+                               break;
+                       default:
+                               core_if->hfnum_other_samples++;
+                               core_if->hfnum_other_frrem_accum +=
+                                   hfnum.b.frrem;
+                               break;
+                       }
+               }
+#endif
+       }
+}
+
+#ifdef DEBUG
+void hc_xfer_timeout(void *ptr)
+{
+       hc_xfer_info_t *xfer_info = NULL;
+       int hc_num = 0;
+
+       if (ptr)
+               xfer_info = (hc_xfer_info_t *) ptr;
+
+       if (!xfer_info->hc) {
+               DWC_ERROR("xfer_info->hc = %p\n", xfer_info->hc);
+               return;
+       }
+
+       hc_num = xfer_info->hc->hc_num;
+       DWC_WARN("%s: timeout on channel %d\n", __func__, hc_num);
+       DWC_WARN("      start_hcchar_val 0x%08x\n",
+                xfer_info->core_if->start_hcchar_val[hc_num]);
+}
+#endif
+
+void ep_xfer_timeout(void *ptr)
+{
+       ep_xfer_info_t *xfer_info = NULL;
+       int ep_num = 0;
+       dctl_data_t dctl = {.d32 = 0 };
+       gintsts_data_t gintsts = {.d32 = 0 };
+       gintmsk_data_t gintmsk = {.d32 = 0 };
+
+       if (ptr)
+               xfer_info = (ep_xfer_info_t *) ptr;
+
+       if (!xfer_info->ep) {
+               DWC_ERROR("xfer_info->ep = %p\n", xfer_info->ep);
+               return;
+       }
+
+       ep_num = xfer_info->ep->num;
+       DWC_WARN("%s: timeout on endpoit %d\n", __func__, ep_num);
+       /* Put the sate to 2 as it was time outed */
+       xfer_info->state = 2;
+
+       dctl.d32 =
+           DWC_READ_REG32(&xfer_info->core_if->dev_if->dev_global_regs->dctl);
+       gintsts.d32 =
+           DWC_READ_REG32(&xfer_info->core_if->core_global_regs->gintsts);
+       gintmsk.d32 =
+           DWC_READ_REG32(&xfer_info->core_if->core_global_regs->gintmsk);
+
+       if (!gintmsk.b.goutnakeff) {
+               /* Unmask it */
+               gintmsk.b.goutnakeff = 1;
+               DWC_WRITE_REG32(&xfer_info->core_if->core_global_regs->gintmsk,
+                               gintmsk.d32);
+
+       }
+
+       if (!gintsts.b.goutnakeff) {
+               dctl.b.sgoutnak = 1;
+       }
+       DWC_WRITE_REG32(&xfer_info->core_if->dev_if->dev_global_regs->dctl,
+                       dctl.d32);
+
+}
+
+void set_pid_isoc(dwc_hc_t * hc)
+{
+       /* Set up the initial PID for the transfer. */
+       if (hc->speed == DWC_OTG_EP_SPEED_HIGH) {
+               if (hc->ep_is_in) {
+                       if (hc->multi_count == 1) {
+                               hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+                       } else if (hc->multi_count == 2) {
+                               hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+                       } else {
+                               hc->data_pid_start = DWC_OTG_HC_PID_DATA2;
+                       }
+               } else {
+                       if (hc->multi_count == 1) {
+                               hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+                       } else {
+                               hc->data_pid_start = DWC_OTG_HC_PID_MDATA;
+                       }
+               }
+       } else {
+               hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+       }
+}
+
+/**
+ * This function does the setup for a data transfer for a host channel and
+ * starts the transfer. May be called in either Slave mode or DMA mode. In
+ * Slave mode, the caller must ensure that there is sufficient space in the
+ * request queue and Tx Data FIFO.
+ *
+ * For an OUT transfer in Slave mode, it loads a data packet into the
+ * appropriate FIFO. If necessary, additional data packets will be loaded in
+ * the Host ISR.
+ *
+ * For an IN transfer in Slave mode, a data packet is requested. The data
+ * packets are unloaded from the Rx FIFO in the Host ISR. If necessary,
+ * additional data packets are requested in the Host ISR.
+ *
+ * For a PING transfer in Slave mode, the Do Ping bit is set in the HCTSIZ
+ * register along with a packet count of 1 and the channel is enabled. This
+ * causes a single PING transaction to occur. Other fields in HCTSIZ are
+ * simply set to 0 since no data transfer occurs in this case.
+ *
+ * For a PING transfer in DMA mode, the HCTSIZ register is initialized with
+ * all the information required to perform the subsequent data transfer. In
+ * addition, the Do Ping bit is set in the HCTSIZ register. In this case, the
+ * controller performs the entire PING protocol, then starts the data
+ * transfer.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Information needed to initialize the host channel. The xfer_len
+ * value may be reduced to accommodate the max widths of the XferSize and
+ * PktCnt fields in the HCTSIZn register. The multi_count value may be changed
+ * to reflect the final xfer_len value.
+ */
+void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       uint16_t num_packets;
+       uint32_t max_hc_xfer_size = core_if->core_params->max_transfer_size;
+       uint16_t max_hc_pkt_count = core_if->core_params->max_packet_count;
+       dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+       hctsiz.d32 = 0;
+
+       if (hc->do_ping) {
+               if (!core_if->dma_enable) {
+                       dwc_otg_hc_do_ping(core_if, hc);
+                       hc->xfer_started = 1;
+                       return;
+               } else {
+                       hctsiz.b.dopng = 1;
+               }
+       }
+
+       if (hc->do_split) {
+               num_packets = 1;
+
+               if (hc->complete_split && !hc->ep_is_in) {
+                       /* For CSPLIT OUT Transfer, set the size to 0 so the
+                        * core doesn't expect any data written to the FIFO */
+                       hc->xfer_len = 0;
+               } else if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
+                       hc->xfer_len = hc->max_packet;
+               } else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
+                       hc->xfer_len = 188;
+               }
+
+               hctsiz.b.xfersize = hc->xfer_len;
+       } else {
+               /*
+                * Ensure that the transfer length and packet count will fit
+                * in the widths allocated for them in the HCTSIZn register.
+                */
+               if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                   hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       /*
+                        * Make sure the transfer size is no larger than one
+                        * (micro)frame's worth of data. (A check was done
+                        * when the periodic transfer was accepted to ensure
+                        * that a (micro)frame's worth of data can be
+                        * programmed into a channel.)
+                        */
+                       uint32_t max_periodic_len =
+                           hc->multi_count * hc->max_packet;
+                       if (hc->xfer_len > max_periodic_len) {
+                               hc->xfer_len = max_periodic_len;
+                       } else {
+                       }
+               } else if (hc->xfer_len > max_hc_xfer_size) {
+                       /* Make sure that xfer_len is a multiple of max packet size. */
+                       hc->xfer_len = max_hc_xfer_size - hc->max_packet + 1;
+               }
+
+               if (hc->xfer_len > 0) {
+                       num_packets =
+                           (hc->xfer_len + hc->max_packet -
+                            1) / hc->max_packet;
+                       if (num_packets > max_hc_pkt_count) {
+                               num_packets = max_hc_pkt_count;
+                               hc->xfer_len = num_packets * hc->max_packet;
+                       }
+               } else {
+                       /* Need 1 packet for transfer length of 0. */
+                       num_packets = 1;
+               }
+
+               if (hc->ep_is_in) {
+                       /* Always program an integral # of max packets for IN transfers. */
+                       hc->xfer_len = num_packets * hc->max_packet;
+               }
+
+               if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                   hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       /*
+                        * Make sure that the multi_count field matches the
+                        * actual transfer length.
+                        */
+                       hc->multi_count = num_packets;
+               }
+
+               if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+                       set_pid_isoc(hc);
+
+               hctsiz.b.xfersize = hc->xfer_len;
+       }
+
+       hc->start_pkt_count = num_packets;
+       hctsiz.b.pktcnt = num_packets;
+       hctsiz.b.pid = hc->data_pid_start;
+       DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+       DWC_DEBUGPL(DBG_HCDV, "  Xfer Size: %d\n", hctsiz.b.xfersize);
+       DWC_DEBUGPL(DBG_HCDV, "  Num Pkts: %d\n", hctsiz.b.pktcnt);
+       DWC_DEBUGPL(DBG_HCDV, "  Start PID: %d\n", hctsiz.b.pid);
+
+       if (core_if->dma_enable) {
+               dwc_dma_t dma_addr;
+               if (hc->align_buff) {
+                       dma_addr = hc->align_buff;
+               } else {
+                       dma_addr = ((unsigned long)hc->xfer_buff & 0xffffffff);
+               }
+               DWC_WRITE_REG32(&hc_regs->hcdma, dma_addr);
+       }
+
+       /* Start the split */
+       if (hc->do_split) {
+               hcsplt_data_t hcsplt;
+               hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+               hcsplt.b.spltena = 1;
+               DWC_WRITE_REG32(&hc_regs->hcsplt, hcsplt.d32);
+       }
+
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcchar.b.multicnt = hc->multi_count;
+       hc_set_even_odd_frame(core_if, hc, &hcchar);
+#ifdef DEBUG
+       core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
+       if (hcchar.b.chdis) {
+               DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+                        __func__, hc->hc_num, hcchar.d32);
+       }
+#endif
+
+       /* Set host channel enable after all other setup is complete. */
+       hcchar.b.chen = 1;
+       hcchar.b.chdis = 0;
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+       hc->xfer_started = 1;
+       hc->requests++;
+
+       if (!core_if->dma_enable && !hc->ep_is_in && hc->xfer_len > 0) {
+               /* Load OUT packet into the appropriate Tx FIFO. */
+               dwc_otg_hc_write_packet(core_if, hc);
+       }
+#ifdef DEBUG
+       if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
+                DWC_DEBUGPL(DBG_HCDV, "transfer %d from core_if %p\n",
+                            hc->hc_num, core_if);//GRAYG
+               core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
+               core_if->hc_xfer_info[hc->hc_num].hc = hc;
+
+               /* Start a timer for this transfer. */
+               DWC_TIMER_SCHEDULE(core_if->hc_xfer_timer[hc->hc_num], 10000);
+       }
+#endif
+}
+
+/**
+ * This function does the setup for a data transfer for a host channel
+ * and starts the transfer in Descriptor DMA mode.
+ *
+ * Initializes HCTSIZ register. For a PING transfer the Do Ping bit is set.
+ * Sets PID and NTD values. For periodic transfers
+ * initializes SCHED_INFO field with micro-frame bitmap.
+ *
+ * Initializes HCDMA register with descriptor list address and CTD value
+ * then starts the transfer via enabling the channel.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Information needed to initialize the host channel.
+ */
+void dwc_otg_hc_start_transfer_ddma(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       hcdma_data_t hcdma;
+
+       hctsiz.d32 = 0;
+
+       if (hc->do_ping)
+               hctsiz.b_ddma.dopng = 1;
+
+       if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+               set_pid_isoc(hc);
+
+       /* Packet Count and Xfer Size are not used in Descriptor DMA mode */
+       hctsiz.b_ddma.pid = hc->data_pid_start;
+       hctsiz.b_ddma.ntd = hc->ntd - 1;        /* 0 - 1 descriptor, 1 - 2 descriptors, etc. */
+       hctsiz.b_ddma.schinfo = hc->schinfo;    /* Non-zero only for high-speed interrupt endpoints */
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+       DWC_DEBUGPL(DBG_HCDV, "  Start PID: %d\n", hctsiz.b.pid);
+       DWC_DEBUGPL(DBG_HCDV, "  NTD: %d\n", hctsiz.b_ddma.ntd);
+
+       DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+       hcdma.d32 = 0;
+       hcdma.b.dma_addr = ((uint32_t) hc->desc_list_addr) >> 11;
+
+       /* Always start from first descriptor. */
+       hcdma.b.ctd = 0;
+       DWC_WRITE_REG32(&hc_regs->hcdma, hcdma.d32);
+
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcchar.b.multicnt = hc->multi_count;
+
+#ifdef DEBUG
+       core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
+       if (hcchar.b.chdis) {
+               DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+                        __func__, hc->hc_num, hcchar.d32);
+       }
+#endif
+
+       /* Set host channel enable after all other setup is complete. */
+       hcchar.b.chen = 1;
+       hcchar.b.chdis = 0;
+
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+       hc->xfer_started = 1;
+       hc->requests++;
+
+#ifdef DEBUG
+       if ((hc->ep_type != DWC_OTG_EP_TYPE_INTR)
+           && (hc->ep_type != DWC_OTG_EP_TYPE_ISOC)) {
+                DWC_DEBUGPL(DBG_HCDV, "DMA transfer %d from core_if %p\n",
+                            hc->hc_num, core_if);//GRAYG
+               core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
+               core_if->hc_xfer_info[hc->hc_num].hc = hc;
+               /* Start a timer for this transfer. */
+               DWC_TIMER_SCHEDULE(core_if->hc_xfer_timer[hc->hc_num], 10000);
+       }
+#endif
+
+}
+
+/**
+ * This function continues a data transfer that was started by previous call
+ * to <code>dwc_otg_hc_start_transfer</code>. The caller must ensure there is
+ * sufficient space in the request queue and Tx Data FIFO. This function
+ * should only be called in Slave mode. In DMA mode, the controller acts
+ * autonomously to complete transfers programmed to a host channel.
+ *
+ * For an OUT transfer, a new data packet is loaded into the appropriate FIFO
+ * if there is any data remaining to be queued. For an IN transfer, another
+ * data packet is always requested. For the SETUP phase of a control transfer,
+ * this function does nothing.
+ *
+ * @return 1 if a new request is queued, 0 if no more requests are required
+ * for this transfer.
+ */
+int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+
+       if (hc->do_split) {
+               /* SPLITs always queue just once per channel */
+               return 0;
+       } else if (hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+               /* SETUPs are queued only once since they can't be NAKed. */
+               return 0;
+       } else if (hc->ep_is_in) {
+               /*
+                * Always queue another request for other IN transfers. If
+                * back-to-back INs are issued and NAKs are received for both,
+                * the driver may still be processing the first NAK when the
+                * second NAK is received. When the interrupt handler clears
+                * the NAK interrupt for the first NAK, the second NAK will
+                * not be seen. So we can't depend on the NAK interrupt
+                * handler to requeue a NAKed request. Instead, IN requests
+                * are issued each time this function is called. When the
+                * transfer completes, the extra requests for the channel will
+                * be flushed.
+                */
+               hcchar_data_t hcchar;
+               dwc_otg_hc_regs_t *hc_regs =
+                   core_if->host_if->hc_regs[hc->hc_num];
+
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+               hc_set_even_odd_frame(core_if, hc, &hcchar);
+               hcchar.b.chen = 1;
+               hcchar.b.chdis = 0;
+               DWC_DEBUGPL(DBG_HCDV, "  IN xfer: hcchar = 0x%08x\n",
+                           hcchar.d32);
+               DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+               hc->requests++;
+               return 1;
+       } else {
+               /* OUT transfers. */
+               if (hc->xfer_count < hc->xfer_len) {
+                       if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                           hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                               hcchar_data_t hcchar;
+                               dwc_otg_hc_regs_t *hc_regs;
+                               hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+                               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+                               hc_set_even_odd_frame(core_if, hc, &hcchar);
+                       }
+
+                       /* Load OUT packet into the appropriate Tx FIFO. */
+                       dwc_otg_hc_write_packet(core_if, hc);
+                       hc->requests++;
+                       return 1;
+               } else {
+                       return 0;
+               }
+       }
+}
+
+/**
+ * Starts a PING transfer. This function should only be called in Slave mode.
+ * The Do Ping bit is set in the HCTSIZ register, then the channel is enabled.
+ */
+void dwc_otg_hc_do_ping(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+
+       hctsiz.d32 = 0;
+       hctsiz.b.dopng = 1;
+       hctsiz.b.pktcnt = 1;
+       DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcchar.b.chen = 1;
+       hcchar.b.chdis = 0;
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+}
+
+/*
+ * This function writes a packet into the Tx FIFO associated with the Host
+ * Channel. For a channel associated with a non-periodic EP, the non-periodic
+ * Tx FIFO is written. For a channel associated with a periodic EP, the
+ * periodic Tx FIFO is written. This function should only be called in Slave
+ * mode.
+ *
+ * Upon return the xfer_buff and xfer_count fields in _hc are incremented by
+ * then number of bytes written to the Tx FIFO.
+ */
+void dwc_otg_hc_write_packet(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+       uint32_t i;
+       uint32_t remaining_count;
+       uint32_t byte_count;
+       uint32_t dword_count;
+
+       uint32_t *data_buff = (uint32_t *) (hc->xfer_buff);
+       uint32_t *data_fifo = core_if->data_fifo[hc->hc_num];
+
+       remaining_count = hc->xfer_len - hc->xfer_count;
+       if (remaining_count > hc->max_packet) {
+               byte_count = hc->max_packet;
+       } else {
+               byte_count = remaining_count;
+       }
+
+       dword_count = (byte_count + 3) / 4;
+
+       if ((((unsigned long)data_buff) & 0x3) == 0) {
+               /* xfer_buff is DWORD aligned. */
+               for (i = 0; i < dword_count; i++, data_buff++) {
+                       DWC_WRITE_REG32(data_fifo, *data_buff);
+               }
+       } else {
+               /* xfer_buff is not DWORD aligned. */
+               for (i = 0; i < dword_count; i++, data_buff++) {
+                       uint32_t data;
+                       data =
+                           (data_buff[0] | data_buff[1] << 8 | data_buff[2] <<
+                            16 | data_buff[3] << 24);
+                       DWC_WRITE_REG32(data_fifo, data);
+               }
+       }
+
+       hc->xfer_count += byte_count;
+       hc->xfer_buff += byte_count;
+}
+
+/**
+ * Gets the current USB frame number. This is the frame number from the last
+ * SOF packet.
+ */
+uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * core_if)
+{
+       dsts_data_t dsts;
+       dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+       /* read current frame/microframe number from DSTS register */
+       return dsts.b.soffn;
+}
+
+/**
+ * Calculates and gets the frame Interval value of HFIR register according PHY 
+ * type and speed.The application can modify a value of HFIR register only after
+ * the Port Enable bit of the Host Port Control and Status register 
+ * (HPRT.PrtEnaPort) has been set.
+*/
+
+uint32_t calc_frame_interval(dwc_otg_core_if_t * core_if)
+{
+       gusbcfg_data_t usbcfg;
+       hwcfg2_data_t hwcfg2;
+       hprt0_data_t hprt0;
+       int clock = 60;         // default value
+       usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       hwcfg2.d32 = DWC_READ_REG32(&core_if->core_global_regs->ghwcfg2);
+       hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+       if (!usbcfg.b.physel && usbcfg.b.ulpi_utmi_sel && !usbcfg.b.phyif)
+               clock = 60;
+       if (usbcfg.b.physel && hwcfg2.b.fs_phy_type == 3)
+               clock = 48;
+       if (!usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
+           !usbcfg.b.ulpi_utmi_sel && usbcfg.b.phyif)
+               clock = 30;
+       if (!usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
+           !usbcfg.b.ulpi_utmi_sel && !usbcfg.b.phyif)
+               clock = 60;
+       if (usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
+           !usbcfg.b.ulpi_utmi_sel && usbcfg.b.phyif)
+               clock = 48;
+       if (usbcfg.b.physel && !usbcfg.b.phyif && hwcfg2.b.fs_phy_type == 2)
+               clock = 48;
+       if (usbcfg.b.physel && hwcfg2.b.fs_phy_type == 1)
+               clock = 48;
+       if (hprt0.b.prtspd == 0)
+               /* High speed case */
+               return 125 * clock;
+       else
+               /* FS/LS case */
+               return 1000 * clock;
+}
+
+/**
+ * This function reads a setup packet from the Rx FIFO into the destination
+ * buffer. This function is called from the Rx Status Queue Level (RxStsQLvl)
+ * Interrupt routine when a SETUP packet has been received in Slave mode.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dest Destination buffer for packet data.
+ */
+void dwc_otg_read_setup_packet(dwc_otg_core_if_t * core_if, uint32_t * dest)
+{
+       device_grxsts_data_t status;
+       /* Get the 8 bytes of a setup transaction data */
+
+       /* Pop 2 DWORDS off the receive data FIFO into memory */
+       dest[0] = DWC_READ_REG32(core_if->data_fifo[0]);
+       dest[1] = DWC_READ_REG32(core_if->data_fifo[0]);
+       if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+               status.d32 =
+                   DWC_READ_REG32(&core_if->core_global_regs->grxstsp);
+               DWC_DEBUGPL(DBG_ANY,
+                           "EP:%d BCnt:%d " "pktsts:%x Frame:%d(0x%0x)\n",
+                           status.b.epnum, status.b.bcnt, status.b.pktsts,
+                           status.b.fn, status.b.fn);
+       }
+}
+
+/**
+ * This function enables EP0 OUT to receive SETUP packets and configures EP0
+ * IN for transmitting packets. It is normally called when the
+ * "Enumeration Done" interrupt occurs.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_activate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       dsts_data_t dsts;
+       depctl_data_t diepctl;
+       depctl_data_t doepctl;
+       dctl_data_t dctl = {.d32 = 0 };
+
+       ep->stp_rollover = 0;
+       /* Read the Device Status and Endpoint 0 Control registers */
+       dsts.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dsts);
+       diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
+       doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl);
+
+       /* Set the MPS of the IN EP based on the enumeration speed */
+       switch (dsts.b.enumspd) {
+       case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+       case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+       case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+               diepctl.b.mps = DWC_DEP0CTL_MPS_64;
+               break;
+       case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+               diepctl.b.mps = DWC_DEP0CTL_MPS_8;
+               break;
+       }
+
+       DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+
+       /* Enable OUT EP for receive */
+       if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
+       doepctl.b.epena = 1;
+       DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+       }
+#ifdef VERBOSE
+       DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n",
+                   DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
+       DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n",
+                   DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl));
+#endif
+       dctl.b.cgnpinnak = 1;
+
+       DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+       DWC_DEBUGPL(DBG_PCDV, "dctl=%0x\n",
+                   DWC_READ_REG32(&dev_if->dev_global_regs->dctl));
+
+}
+
+/**
+ * This function activates an EP.  The Device EP control register for
+ * the EP is configured as defined in the ep structure. Note: This
+ * function is not used for EP0.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to activate.
+ */
+void dwc_otg_ep_activate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       depctl_data_t depctl;
+       volatile uint32_t *addr;
+       daint_data_t daintmsk = {.d32 = 0 };
+       dcfg_data_t dcfg;
+       uint8_t i;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s() EP%d-%s\n", __func__, ep->num,
+                   (ep->is_in ? "IN" : "OUT"));
+
+#ifdef DWC_UTE_PER_IO
+       ep->xiso_frame_num = 0xFFFFFFFF;
+       ep->xiso_active_xfers = 0;
+       ep->xiso_queued_xfers = 0;
+#endif
+       /* Read DEPCTLn register */
+       if (ep->is_in == 1) {
+               addr = &dev_if->in_ep_regs[ep->num]->diepctl;
+               daintmsk.ep.in = 1 << ep->num;
+       } else {
+               addr = &dev_if->out_ep_regs[ep->num]->doepctl;
+               daintmsk.ep.out = 1 << ep->num;
+       }
+
+       /* If the EP is already active don't change the EP Control
+        * register. */
+       depctl.d32 = DWC_READ_REG32(addr);
+       if (!depctl.b.usbactep) {
+               depctl.b.mps = ep->maxpacket;
+               depctl.b.eptype = ep->type;
+               depctl.b.txfnum = ep->tx_fifo_num;
+
+               if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       depctl.b.setd0pid = 1;  // ???
+               } else {
+                       depctl.b.setd0pid = 1;
+               }
+               depctl.b.usbactep = 1;
+
+               /* Update nextep_seq array and EPMSCNT in DCFG*/
+               if (!(depctl.b.eptype & 1) && (ep->is_in == 1)) {       // NP IN EP
+                       for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+                               if (core_if->nextep_seq[i] == core_if->first_in_nextep_seq)
+                               break;
+                       }
+                       core_if->nextep_seq[i] = ep->num;       
+                       core_if->nextep_seq[ep->num] = core_if->first_in_nextep_seq;
+                       depctl.b.nextep = core_if->nextep_seq[ep->num];
+                       dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+                       dcfg.b.epmscnt++;
+                       DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+                               __func__, core_if->first_in_nextep_seq);
+                       for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+                               DWC_DEBUGPL(DBG_PCDV, "%2d\n",
+                                           core_if->nextep_seq[i]);
+                       }
+
+               }
+
+
+               DWC_WRITE_REG32(addr, depctl.d32);
+               DWC_DEBUGPL(DBG_PCDV, "DEPCTL=%08x\n", DWC_READ_REG32(addr));
+       }
+
+       /* Enable the Interrupt for this EP */
+       if (core_if->multiproc_int_enable) {
+               if (ep->is_in == 1) {
+                       diepmsk_data_t diepmsk = {.d32 = 0 };
+                       diepmsk.b.xfercompl = 1;
+                       diepmsk.b.timeout = 1;
+                       diepmsk.b.epdisabled = 1;
+                       diepmsk.b.ahberr = 1;
+                       diepmsk.b.intknepmis = 1;
+                       if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
+                               diepmsk.b.intknepmis = 0; 
+                       diepmsk.b.txfifoundrn = 1;      //?????
+                       if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                               diepmsk.b.nak = 1;
+                       }
+
+                       
+                       
+/*
+                       if (core_if->dma_desc_enable) {
+                               diepmsk.b.bna = 1;
+                       }
+*/
+/*                     
+                       if (core_if->dma_enable) {
+                               doepmsk.b.nak = 1;
+                       }
+*/
+                       DWC_WRITE_REG32(&dev_if->dev_global_regs->
+                                       diepeachintmsk[ep->num], diepmsk.d32);
+
+               } else {
+                       doepmsk_data_t doepmsk = {.d32 = 0 };
+                       doepmsk.b.xfercompl = 1;
+                       doepmsk.b.ahberr = 1;
+                       doepmsk.b.epdisabled = 1;
+                       if (ep->type == DWC_OTG_EP_TYPE_ISOC)
+                               doepmsk.b.outtknepdis = 1;
+
+/*                     
+
+                       if (core_if->dma_desc_enable) {
+                               doepmsk.b.bna = 1;
+                       }
+*/
+/*                     
+                       doepmsk.b.babble = 1;
+                       doepmsk.b.nyet = 1;
+                       doepmsk.b.nak = 1;
+*/
+                       DWC_WRITE_REG32(&dev_if->dev_global_regs->
+                                       doepeachintmsk[ep->num], doepmsk.d32);
+               }
+               DWC_MODIFY_REG32(&dev_if->dev_global_regs->deachintmsk,
+                                0, daintmsk.d32);
+       } else {
+               if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       if (ep->is_in) {
+                               diepmsk_data_t diepmsk = {.d32 = 0 };
+                               diepmsk.b.nak = 1;
+                               DWC_MODIFY_REG32(&dev_if->dev_global_regs->diepmsk, 0, diepmsk.d32);
+                       } else {
+                               doepmsk_data_t doepmsk = {.d32 = 0 };
+                               doepmsk.b.outtknepdis = 1;
+                               DWC_MODIFY_REG32(&dev_if->dev_global_regs->doepmsk, 0, doepmsk.d32);
+                       }
+               }
+               DWC_MODIFY_REG32(&dev_if->dev_global_regs->daintmsk,
+                                0, daintmsk.d32);
+       }
+
+       DWC_DEBUGPL(DBG_PCDV, "DAINTMSK=%0x\n",
+                   DWC_READ_REG32(&dev_if->dev_global_regs->daintmsk));
+
+       ep->stall_clear_flag = 0;
+
+       return;
+}
+
+/**
+ * This function deactivates an EP. This is done by clearing the USB Active
+ * EP bit in the Device EP control register. Note: This function is not used
+ * for EP0. EP0 cannot be deactivated.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to deactivate.
+ */
+void dwc_otg_ep_deactivate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl = {.d32 = 0 };
+       volatile uint32_t *addr;
+       daint_data_t daintmsk = {.d32 = 0 };
+       dcfg_data_t dcfg;
+       uint8_t i = 0;
+
+#ifdef DWC_UTE_PER_IO
+       ep->xiso_frame_num = 0xFFFFFFFF;
+       ep->xiso_active_xfers = 0;
+       ep->xiso_queued_xfers = 0;
+#endif
+
+       /* Read DEPCTLn register */
+       if (ep->is_in == 1) {
+               addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+               daintmsk.ep.in = 1 << ep->num;
+       } else {
+               addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+               daintmsk.ep.out = 1 << ep->num;
+       }
+
+       depctl.d32 = DWC_READ_REG32(addr);
+
+       depctl.b.usbactep = 0;
+       
+       /* Update nextep_seq array and EPMSCNT in DCFG*/
+       if (!(depctl.b.eptype & 1) && ep->is_in == 1) { // NP EP IN
+               for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+                       if (core_if->nextep_seq[i] == ep->num)
+                       break;
+               }
+               core_if->nextep_seq[i] = core_if->nextep_seq[ep->num];  
+               if (core_if->first_in_nextep_seq == ep->num)
+                       core_if->first_in_nextep_seq = i;
+               core_if->nextep_seq[ep->num] = 0xff;
+               depctl.b.nextep = 0;
+               dcfg.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+               dcfg.b.epmscnt--;
+               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
+                               dcfg.d32);
+
+               DWC_DEBUGPL(DBG_PCDV,
+                           "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+                               __func__, core_if->first_in_nextep_seq);
+                       for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+                               DWC_DEBUGPL(DBG_PCDV, "%2d\n", core_if->nextep_seq[i]);
+                       }
+       }
+               
+       if (ep->is_in == 1)
+               depctl.b.txfnum = 0;
+
+       if (core_if->dma_desc_enable)
+               depctl.b.epdis = 1;
+
+       DWC_WRITE_REG32(addr, depctl.d32);
+       depctl.d32 = DWC_READ_REG32(addr);
+       if (core_if->dma_enable && ep->type == DWC_OTG_EP_TYPE_ISOC
+           && depctl.b.epena) {
+               depctl_data_t depctl = {.d32 = 0};
+               if (ep->is_in) {
+                       diepint_data_t diepint = {.d32 = 0};
+                       
+                       depctl.b.snak = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                       diepctl, depctl.d32);
+                       do {
+                               dwc_udelay(10);
+                               diepint.d32 =
+                                   DWC_READ_REG32(&core_if->
+                                                  dev_if->in_ep_regs[ep->num]->
+                                                  diepint);
+                       } while (!diepint.b.inepnakeff); 
+                       diepint.b.inepnakeff = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                       diepint, diepint.d32);
+                       depctl.d32 = 0;
+                       depctl.b.epdis = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                       diepctl, depctl.d32);
+                       do {
+                               dwc_udelay(10);
+                               diepint.d32 =
+                                   DWC_READ_REG32(&core_if->
+                                                  dev_if->in_ep_regs[ep->num]->
+                                                  diepint);
+                       } while (!diepint.b.epdisabled); 
+                       diepint.b.epdisabled = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                       diepint, diepint.d32);
+               } else {
+                       dctl_data_t dctl = {.d32 = 0};
+                       gintmsk_data_t gintsts = {.d32 = 0};
+                       doepint_data_t doepint = {.d32 = 0};
+                       dctl.b.sgoutnak = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                        dctl, 0, dctl.d32);
+                       do {
+                               dwc_udelay(10);
+                               gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+                       } while (!gintsts.b.goutnakeff); 
+                       gintsts.d32 = 0;
+                       gintsts.b.goutnakeff = 1;
+                       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+                       depctl.d32 = 0;
+                       depctl.b.epdis = 1;
+                       depctl.b.snak = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->doepctl, depctl.d32);
+                       do 
+                       {
+                               dwc_udelay(10);
+                               doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                       out_ep_regs[ep->num]->doepint);
+                       } while (!doepint.b.epdisabled); 
+
+                       doepint.b.epdisabled = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->doepint, doepint.d32);
+
+                       dctl.d32 = 0;
+                       dctl.b.cgoutnak = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+               }               
+       }
+
+       /* Disable the Interrupt for this EP */
+       if (core_if->multiproc_int_enable) {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->deachintmsk,
+                                daintmsk.d32, 0);
+
+               if (ep->is_in == 1) {
+                       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+                                       diepeachintmsk[ep->num], 0);
+               } else {
+                       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+                                       doepeachintmsk[ep->num], 0);
+               }
+       } else {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->daintmsk,
+                                daintmsk.d32, 0);
+       }
+
+}
+
+/**
+ * This function initializes dma descriptor chain.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+static void init_dma_desc_chain(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       uint32_t offset;
+       uint32_t xfer_est;
+       int i;
+       unsigned maxxfer_local, total_len;
+       
+       if (!ep->is_in && ep->type == DWC_OTG_EP_TYPE_INTR && 
+                                       (ep->maxpacket%4)) {
+               maxxfer_local = ep->maxpacket;
+               total_len = ep->xfer_len;
+       } else {
+               maxxfer_local = ep->maxxfer;
+               total_len = ep->total_len;
+       }
+
+       ep->desc_cnt = (total_len / maxxfer_local) +
+            ((total_len % maxxfer_local) ? 1 : 0);
+
+       if (!ep->desc_cnt)
+               ep->desc_cnt = 1;
+
+       if (ep->desc_cnt > MAX_DMA_DESC_CNT)
+               ep->desc_cnt = MAX_DMA_DESC_CNT;
+
+       dma_desc = ep->desc_addr;
+       if (maxxfer_local == ep->maxpacket) {
+               if ((total_len % maxxfer_local) &&
+                               (total_len/maxxfer_local < MAX_DMA_DESC_CNT)) {
+                       xfer_est = (ep->desc_cnt - 1) * maxxfer_local +
+                                       (total_len % maxxfer_local);
+               } else
+                       xfer_est = ep->desc_cnt * maxxfer_local;
+       } else
+               xfer_est = total_len;
+       offset = 0;
+       for (i = 0; i < ep->desc_cnt; ++i) {
+               /** DMA Descriptor Setup */
+               if (xfer_est > maxxfer_local) {
+                       dma_desc->status.b.bs = BS_HOST_BUSY;
+                       dma_desc->status.b.l = 0;
+                       dma_desc->status.b.ioc = 0;
+                       dma_desc->status.b.sp = 0;
+                       dma_desc->status.b.bytes = maxxfer_local;
+                       dma_desc->buf = ep->dma_addr + offset;
+                       dma_desc->status.b.sts = 0;
+                       dma_desc->status.b.bs = BS_HOST_READY;
+
+                       xfer_est -= maxxfer_local;
+                       offset += maxxfer_local;
+               } else {
+                       dma_desc->status.b.bs = BS_HOST_BUSY;
+                       dma_desc->status.b.l = 1;
+                       dma_desc->status.b.ioc = 1;
+                       if (ep->is_in) {
+                               dma_desc->status.b.sp =
+                                   (xfer_est %
+                                    ep->maxpacket) ? 1 : ((ep->
+                                                           sent_zlp) ? 1 : 0);
+                               dma_desc->status.b.bytes = xfer_est;
+                       } else {
+                               if (maxxfer_local == ep->maxpacket)
+                                       dma_desc->status.b.bytes = xfer_est;
+                               else    
+                                       dma_desc->status.b.bytes =
+                                               xfer_est + ((4 - (xfer_est & 0x3)) & 0x3);
+                       }
+
+                       dma_desc->buf = ep->dma_addr + offset;
+                       dma_desc->status.b.sts = 0;
+                       dma_desc->status.b.bs = BS_HOST_READY;
+               }
+               dma_desc++;
+       }
+}
+/**
+ * This function is called when to write ISOC data into appropriate dedicated 
+ * periodic FIFO.
+ */
+static int32_t write_isoc_tx_fifo(dwc_otg_core_if_t * core_if, dwc_ep_t * dwc_ep)
+{
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       dwc_otg_dev_in_ep_regs_t *ep_regs;
+       dtxfsts_data_t txstatus = {.d32 = 0 };
+       uint32_t len = 0;
+       int epnum = dwc_ep->num;
+       int dwords;
+
+       DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %d \n", epnum);
+
+       ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+       len = dwc_ep->xfer_len - dwc_ep->xfer_count;
+
+       if (len > dwc_ep->maxpacket) {
+               len = dwc_ep->maxpacket;
+       }
+
+       dwords = (len + 3) / 4;
+
+       /* While there is space in the queue and space in the FIFO and
+        * More data to tranfer, Write packets to the Tx FIFO */
+       txstatus.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+       DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
+
+       while (txstatus.b.txfspcavail > dwords &&
+              dwc_ep->xfer_count < dwc_ep->xfer_len && dwc_ep->xfer_len != 0) {
+               /* Write the FIFO */
+               dwc_otg_ep_write_packet(core_if, dwc_ep, 0);
+
+               len = dwc_ep->xfer_len - dwc_ep->xfer_count;
+               if (len > dwc_ep->maxpacket) {
+                       len = dwc_ep->maxpacket;
+               }
+
+               dwords = (len + 3) / 4;
+               txstatus.d32 =
+                   DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+               DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum,
+                           txstatus.d32);
+       }
+
+       DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum,
+                   DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts));
+
+       return 1;
+}
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR.  the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl;
+       deptsiz_data_t deptsiz;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+       DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+                   "xfer_buff=%p start_xfer_buff=%p, total_len = %d\n",
+                   ep->num, (ep->is_in ? "IN" : "OUT"), ep->xfer_len,
+                   ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff,
+                   ep->total_len);
+       /* IN endpoint */
+       if (ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t *in_regs =
+                   core_if->dev_if->in_ep_regs[ep->num];
+
+               gnptxsts_data_t gtxstatus;
+
+               gtxstatus.d32 =
+                   DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
+
+               if (core_if->en_multiple_tx_fifo == 0
+                   && gtxstatus.b.nptxqspcavail == 0 && !core_if->dma_enable) {
+#ifdef DEBUG
+                       DWC_PRINTF("TX Queue Full (0x%0x)\n", gtxstatus.d32);
+#endif
+                       return;
+               }
+
+               depctl.d32 = DWC_READ_REG32(&(in_regs->diepctl));
+               deptsiz.d32 = DWC_READ_REG32(&(in_regs->dieptsiz));
+
+               if (ep->maxpacket > ep->maxxfer / MAX_PKT_CNT)
+                       ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
+                               ep->maxxfer : (ep->total_len - ep->xfer_len);
+               else 
+                       ep->xfer_len += (MAX_PKT_CNT * ep->maxpacket < (ep->total_len - ep->xfer_len)) ?
+                                MAX_PKT_CNT * ep->maxpacket : (ep->total_len - ep->xfer_len);
+
+
+               /* Zero Length Packet? */
+               if ((ep->xfer_len - ep->xfer_count) == 0) {
+                       deptsiz.b.xfersize = 0;
+                       deptsiz.b.pktcnt = 1;
+               } else {
+                       /* Program the transfer size and packet count
+                        *      as follows: xfersize = N * maxpacket +
+                        *      short_packet pktcnt = N + (short_packet
+                        *      exist ? 1 : 0) 
+                        */
+                       deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
+                       deptsiz.b.pktcnt =
+                           (ep->xfer_len - ep->xfer_count - 1 +
+                            ep->maxpacket) / ep->maxpacket;
+                       if (deptsiz.b.pktcnt > MAX_PKT_CNT) {
+                               deptsiz.b.pktcnt = MAX_PKT_CNT;
+                               deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+                       } 
+                       if (ep->type == DWC_OTG_EP_TYPE_ISOC) 
+                               deptsiz.b.mc = deptsiz.b.pktcnt;
+               }
+
+               /* Write the DMA register */
+               if (core_if->dma_enable) {
+                       if (core_if->dma_desc_enable == 0) {
+                               if (ep->type != DWC_OTG_EP_TYPE_ISOC)
+                                       deptsiz.b.mc = 1;
+                               DWC_WRITE_REG32(&in_regs->dieptsiz,
+                                               deptsiz.d32);
+                               DWC_WRITE_REG32(&(in_regs->diepdma),
+                                               (uint32_t) ep->dma_addr);
+                       } else {
+#ifdef DWC_UTE_CFI
+                               /* The descriptor chain should be already initialized by now */
+                               if (ep->buff_mode != BM_STANDARD) {
+                                       DWC_WRITE_REG32(&in_regs->diepdma,
+                                                       ep->descs_dma_addr);
+                               } else {
+#endif
+                                       init_dma_desc_chain(core_if, ep);
+                               /** DIEPDMAn Register write */
+                                       DWC_WRITE_REG32(&in_regs->diepdma,
+                                                       ep->dma_desc_addr);
+#ifdef DWC_UTE_CFI
+                               }
+#endif
+                       }
+               } else {
+                       DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+                       if (ep->type != DWC_OTG_EP_TYPE_ISOC) {
+                               /**
+                                * Enable the Non-Periodic Tx FIFO empty interrupt,
+                                * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+                                * the data will be written into the fifo by the ISR.
+                                */
+                               if (core_if->en_multiple_tx_fifo == 0) {
+                                       intr_mask.b.nptxfempty = 1;
+                                       DWC_MODIFY_REG32
+                                           (&core_if->core_global_regs->gintmsk,
+                                            intr_mask.d32, intr_mask.d32);
+                               } else {
+                                       /* Enable the Tx FIFO Empty Interrupt for this EP */
+                                       if (ep->xfer_len > 0) {
+                                               uint32_t fifoemptymsk = 0;
+                                               fifoemptymsk = 1 << ep->num;
+                                               DWC_MODIFY_REG32
+                                                   (&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+                                                    0, fifoemptymsk);
+
+                                       }
+                               }
+                       }  else {
+                                        write_isoc_tx_fifo(core_if, ep);
+                       }
+               }
+               if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+                       depctl.b.nextep = core_if->nextep_seq[ep->num];
+               
+               if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       dsts_data_t dsts = {.d32 = 0};
+                       if (ep->bInterval == 1) {
+                               dsts.d32 =
+                                   DWC_READ_REG32(&core_if->dev_if->
+                                                  dev_global_regs->dsts);
+                               ep->frame_num = dsts.b.soffn + ep->bInterval;
+                               if (ep->frame_num > 0x3FFF) {
+                                       ep->frm_overrun = 1;
+                                       ep->frame_num &= 0x3FFF;
+                               } else 
+                                       ep->frm_overrun = 0;
+                               if (ep->frame_num & 0x1) {
+                                       depctl.b.setd1pid = 1;
+                               } else {
+                                       depctl.b.setd0pid = 1;
+                               }
+                       }
+               }
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+       } else {
+               /* OUT endpoint */
+               dwc_otg_dev_out_ep_regs_t *out_regs =
+                   core_if->dev_if->out_ep_regs[ep->num];
+
+               depctl.d32 = DWC_READ_REG32(&(out_regs->doepctl));
+               deptsiz.d32 = DWC_READ_REG32(&(out_regs->doeptsiz));
+
+               if (!core_if->dma_desc_enable) {        
+                       if (ep->maxpacket > ep->maxxfer / MAX_PKT_CNT)
+                               ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
+                               ep->maxxfer : (ep->total_len - ep->xfer_len);
+                else
+                                       ep->xfer_len += (MAX_PKT_CNT * ep->maxpacket < (ep->total_len 
+                                       - ep->xfer_len)) ? MAX_PKT_CNT * ep->maxpacket : (ep->total_len - ep->xfer_len);
+               }
+
+               /* Program the transfer size and packet count as follows:
+                *
+                *      pktcnt = N                                                                                
+                *      xfersize = N * maxpacket
+                */
+               if ((ep->xfer_len - ep->xfer_count) == 0) {
+                       /* Zero Length Packet */
+                       deptsiz.b.xfersize = ep->maxpacket;
+                       deptsiz.b.pktcnt = 1;
+               } else {
+                       deptsiz.b.pktcnt =
+                           (ep->xfer_len - ep->xfer_count +
+                            (ep->maxpacket - 1)) / ep->maxpacket;
+                       if (deptsiz.b.pktcnt > MAX_PKT_CNT) {
+                               deptsiz.b.pktcnt = MAX_PKT_CNT;
+                       }
+                       if (!core_if->dma_desc_enable) {
+                               ep->xfer_len =
+                                       deptsiz.b.pktcnt * ep->maxpacket + ep->xfer_count;
+                       }
+                       deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
+               }
+
+               DWC_DEBUGPL(DBG_PCDV, "ep%d xfersize=%d pktcnt=%d\n",
+                           ep->num, deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+               if (core_if->dma_enable) {
+                       if (!core_if->dma_desc_enable) {
+                               DWC_WRITE_REG32(&out_regs->doeptsiz,
+                                               deptsiz.d32);
+
+                               DWC_WRITE_REG32(&(out_regs->doepdma),
+                                               (uint32_t) ep->dma_addr);
+                       } else {
+#ifdef DWC_UTE_CFI
+                               /* The descriptor chain should be already initialized by now */
+                               if (ep->buff_mode != BM_STANDARD) {
+                                       DWC_WRITE_REG32(&out_regs->doepdma,
+                                                       ep->descs_dma_addr);
+                               } else {
+#endif
+                                       /** This is used for interrupt out transfers*/
+                                       if (!ep->xfer_len)
+                                               ep->xfer_len = ep->total_len;
+                                       init_dma_desc_chain(core_if, ep);
+
+                                       if (core_if->core_params->dev_out_nak) {
+                                               if (ep->type == DWC_OTG_EP_TYPE_BULK) {
+                                                       deptsiz.b.pktcnt = (ep->total_len +
+                                                               (ep->maxpacket - 1)) / ep->maxpacket;
+                                                       deptsiz.b.xfersize = ep->total_len;
+                                                       /* Remember initial value of doeptsiz */
+                                                       core_if->start_doeptsiz_val[ep->num] = deptsiz.d32;
+                                                       DWC_WRITE_REG32(&out_regs->doeptsiz,
+                                                               deptsiz.d32);                                                                                                   
+                                               }
+                                       }
+                               /** DOEPDMAn Register write */
+                                       DWC_WRITE_REG32(&out_regs->doepdma,
+                                                       ep->dma_desc_addr);
+#ifdef DWC_UTE_CFI
+                               }
+#endif
+                       }
+               } else {
+                       DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+               }
+
+               if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       dsts_data_t dsts = {.d32 = 0};
+                       if (ep->bInterval == 1) {
+                               dsts.d32 =
+                                   DWC_READ_REG32(&core_if->dev_if->
+                                                  dev_global_regs->dsts);
+                               ep->frame_num = dsts.b.soffn + ep->bInterval;
+                               if (ep->frame_num > 0x3FFF) {
+                                       ep->frm_overrun = 1;
+                                       ep->frame_num &= 0x3FFF;
+                               } else 
+                                       ep->frm_overrun = 0;
+
+                               if (ep->frame_num & 0x1) {
+                                       depctl.b.setd1pid = 1;
+                               } else {
+                                       depctl.b.setd0pid = 1;
+                               }
+                       }
+               }
+
+               /* EP enable */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+
+               DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
+
+               DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n",
+                           DWC_READ_REG32(&out_regs->doepctl),
+                           DWC_READ_REG32(&out_regs->doeptsiz));
+               DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n",
+                           DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
+                                          daintmsk),
+                           DWC_READ_REG32(&core_if->core_global_regs->
+                                          gintmsk));
+
+               /* Timer is scheduling only for out bulk transfers for 
+                * "Device DDMA OUT NAK Enhancement" feature to inform user 
+                * about received data payload in case of timeout 
+                */
+               if (core_if->core_params->dev_out_nak) {
+                       if (ep->type == DWC_OTG_EP_TYPE_BULK) {
+                               core_if->ep_xfer_info[ep->num].core_if = core_if;
+                               core_if->ep_xfer_info[ep->num].ep = ep;
+                               core_if->ep_xfer_info[ep->num].state = 1;
+
+                               /* Start a timer for this transfer. */
+                               DWC_TIMER_SCHEDULE(core_if->ep_xfer_timer[ep->num], 10000);
+                       }
+               }
+       }
+}
+
+/**
+ * This function setup a zero length transfer in Buffer DMA and
+ * Slave modes for usb requests with zero field set
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+
+       depctl_data_t depctl;
+       deptsiz_data_t deptsiz;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+       DWC_PRINTF("zero length transfer is called\n");
+
+       /* IN endpoint */
+       if (ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t *in_regs =
+                   core_if->dev_if->in_ep_regs[ep->num];
+
+               depctl.d32 = DWC_READ_REG32(&(in_regs->diepctl));
+               deptsiz.d32 = DWC_READ_REG32(&(in_regs->dieptsiz));
+
+               deptsiz.b.xfersize = 0;
+               deptsiz.b.pktcnt = 1;
+
+               /* Write the DMA register */
+               if (core_if->dma_enable) {
+                       if (core_if->dma_desc_enable == 0) {
+                               deptsiz.b.mc = 1;
+                               DWC_WRITE_REG32(&in_regs->dieptsiz,
+                                               deptsiz.d32);
+                               DWC_WRITE_REG32(&(in_regs->diepdma),
+                                               (uint32_t) ep->dma_addr);
+                       }
+               } else {
+                       DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+                       /**
+                        * Enable the Non-Periodic Tx FIFO empty interrupt,
+                        * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+                        * the data will be written into the fifo by the ISR.
+                        */
+                       if (core_if->en_multiple_tx_fifo == 0) {
+                               intr_mask.b.nptxfempty = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                core_global_regs->gintmsk,
+                                                intr_mask.d32, intr_mask.d32);
+                       } else {
+                               /* Enable the Tx FIFO Empty Interrupt for this EP */
+                               if (ep->xfer_len > 0) {
+                                       uint32_t fifoemptymsk = 0;
+                                       fifoemptymsk = 1 << ep->num;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+                                                        0, fifoemptymsk);
+                               }
+                       }
+               }
+
+               if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+                       depctl.b.nextep = core_if->nextep_seq[ep->num];
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+       } else {
+               /* OUT endpoint */
+               dwc_otg_dev_out_ep_regs_t *out_regs =
+                   core_if->dev_if->out_ep_regs[ep->num];
+
+               depctl.d32 = DWC_READ_REG32(&(out_regs->doepctl));
+               deptsiz.d32 = DWC_READ_REG32(&(out_regs->doeptsiz));
+
+               /* Zero Length Packet */
+               deptsiz.b.xfersize = ep->maxpacket;
+               deptsiz.b.pktcnt = 1;
+
+               if (core_if->dma_enable) {
+                       if (!core_if->dma_desc_enable) {
+                               DWC_WRITE_REG32(&out_regs->doeptsiz,
+                                               deptsiz.d32);
+
+                               DWC_WRITE_REG32(&(out_regs->doepdma),
+                                               (uint32_t) ep->dma_addr);
+                       }
+               } else {
+                       DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+               }
+
+               /* EP enable */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+
+               DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
+
+       }
+}
+
+/**
+ * This function does the setup for a data transfer for EP0 and starts
+ * the transfer.  For an IN transfer, the packets will be loaded into
+ * the appropriate Tx FIFO in the ISR. For OUT transfers, the packets are
+ * unloaded from the Rx FIFO in the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl;
+       deptsiz0_data_t deptsiz;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       dwc_otg_dev_dma_desc_t *dma_desc;
+
+       DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+                   "xfer_buff=%p start_xfer_buff=%p \n",
+                   ep->num, (ep->is_in ? "IN" : "OUT"), ep->xfer_len,
+                   ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff);
+
+       ep->total_len = ep->xfer_len;
+
+       /* IN endpoint */
+       if (ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t *in_regs =
+                   core_if->dev_if->in_ep_regs[0];
+
+               gnptxsts_data_t gtxstatus;
+
+               if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+                       depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
+                       if (depctl.b.epena)
+                               return;
+               }
+
+               gtxstatus.d32 =
+                   DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
+
+               /* If dedicated FIFO every time flush fifo before enable ep*/
+               if (core_if->en_multiple_tx_fifo && core_if->snpsid >= OTG_CORE_REV_3_00a)
+                       dwc_otg_flush_tx_fifo(core_if, ep->tx_fifo_num);
+
+               if (core_if->en_multiple_tx_fifo == 0
+                   && gtxstatus.b.nptxqspcavail == 0
+                   && !core_if->dma_enable) {
+#ifdef DEBUG
+                       deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
+                       DWC_DEBUGPL(DBG_PCD, "DIEPCTL0=%0x\n",
+                                   DWC_READ_REG32(&in_regs->diepctl));
+                       DWC_DEBUGPL(DBG_PCD, "DIEPTSIZ0=%0x (sz=%d, pcnt=%d)\n",
+                                   deptsiz.d32,
+                                   deptsiz.b.xfersize, deptsiz.b.pktcnt);
+                       DWC_PRINTF("TX Queue or FIFO Full (0x%0x)\n",
+                                  gtxstatus.d32);
+#endif
+                       return;
+               }
+
+               depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
+               deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
+
+               /* Zero Length Packet? */
+               if (ep->xfer_len == 0) {
+                       deptsiz.b.xfersize = 0;
+                       deptsiz.b.pktcnt = 1;
+               } else {
+                       /* Program the transfer size and packet count
+                        *      as follows: xfersize = N * maxpacket +
+                        *      short_packet pktcnt = N + (short_packet
+                        *      exist ? 1 : 0) 
+                        */
+                       if (ep->xfer_len > ep->maxpacket) {
+                               ep->xfer_len = ep->maxpacket;
+                               deptsiz.b.xfersize = ep->maxpacket;
+                       } else {
+                               deptsiz.b.xfersize = ep->xfer_len;
+                       }
+                       deptsiz.b.pktcnt = 1;
+
+               }
+               DWC_DEBUGPL(DBG_PCDV,
+                           "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+                           ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
+                           deptsiz.d32);
+
+               /* Write the DMA register */
+               if (core_if->dma_enable) {
+                       if (core_if->dma_desc_enable == 0) {
+                               DWC_WRITE_REG32(&in_regs->dieptsiz,
+                                               deptsiz.d32);
+
+                               DWC_WRITE_REG32(&(in_regs->diepdma),
+                                               (uint32_t) ep->dma_addr);
+                       } else {
+                               dma_desc = core_if->dev_if->in_desc_addr;
+
+                               /** DMA Descriptor Setup */
+                               dma_desc->status.b.bs = BS_HOST_BUSY;
+                               dma_desc->status.b.l = 1;
+                               dma_desc->status.b.ioc = 1;
+                               dma_desc->status.b.sp =
+                                   (ep->xfer_len == ep->maxpacket) ? 0 : 1;
+                               dma_desc->status.b.bytes = ep->xfer_len;
+                               dma_desc->buf = ep->dma_addr;
+                               dma_desc->status.b.sts = 0;
+                               dma_desc->status.b.bs = BS_HOST_READY;
+
+                               /** DIEPDMA0 Register write */
+                               DWC_WRITE_REG32(&in_regs->diepdma,
+                                               core_if->
+                                               dev_if->dma_in_desc_addr);
+                       }
+               } else {
+                       DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+               }
+
+               if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+                       depctl.b.nextep = core_if->nextep_seq[ep->num];
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+               /**
+                * Enable the Non-Periodic Tx FIFO empty interrupt, the
+                * data will be written into the fifo by the ISR.
+                */
+               if (!core_if->dma_enable) {
+                       if (core_if->en_multiple_tx_fifo == 0) {
+                               intr_mask.b.nptxfempty = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                core_global_regs->gintmsk,
+                                                intr_mask.d32, intr_mask.d32);
+                       } else {
+                               /* Enable the Tx FIFO Empty Interrupt for this EP */
+                               if (ep->xfer_len > 0) {
+                                       uint32_t fifoemptymsk = 0;
+                                       fifoemptymsk |= 1 << ep->num;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+                                                        0, fifoemptymsk);
+                               }
+                       }
+               }
+       } else {
+               /* OUT endpoint */
+               dwc_otg_dev_out_ep_regs_t *out_regs =
+                   core_if->dev_if->out_ep_regs[0];
+
+               depctl.d32 = DWC_READ_REG32(&out_regs->doepctl);
+               deptsiz.d32 = DWC_READ_REG32(&out_regs->doeptsiz);
+
+               /* Program the transfer size and packet count as follows:
+                *      xfersize = N * (maxpacket + 4 - (maxpacket % 4))
+                *      pktcnt = N                                                                                      */
+               /* Zero Length Packet */
+               deptsiz.b.xfersize = ep->maxpacket;
+               deptsiz.b.pktcnt = 1;
+               if (core_if->snpsid >= OTG_CORE_REV_3_00a)
+                       deptsiz.b.supcnt = 3;
+
+               DWC_DEBUGPL(DBG_PCDV, "len=%d  xfersize=%d pktcnt=%d\n",
+                           ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+               if (core_if->dma_enable) {
+                       if (!core_if->dma_desc_enable) {
+                               DWC_WRITE_REG32(&out_regs->doeptsiz,
+                                               deptsiz.d32);
+
+                               DWC_WRITE_REG32(&(out_regs->doepdma),
+                                               (uint32_t) ep->dma_addr);
+                       } else {
+                               dma_desc = core_if->dev_if->out_desc_addr;
+
+                               /** DMA Descriptor Setup */
+                               dma_desc->status.b.bs = BS_HOST_BUSY;
+                               if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+                                       dma_desc->status.b.mtrf = 0;
+                                       dma_desc->status.b.sr = 0;
+                               }
+                               dma_desc->status.b.l = 1;
+                               dma_desc->status.b.ioc = 1;
+                               dma_desc->status.b.bytes = ep->maxpacket;
+                               dma_desc->buf = ep->dma_addr;
+                               dma_desc->status.b.sts = 0;
+                               dma_desc->status.b.bs = BS_HOST_READY;
+
+                               /** DOEPDMA0 Register write */
+                               DWC_WRITE_REG32(&out_regs->doepdma,
+                                               core_if->dev_if->
+                                               dma_out_desc_addr);
+                       }
+               } else {
+                       DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+               }
+
+               /* EP enable */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               DWC_WRITE_REG32(&(out_regs->doepctl), depctl.d32);
+       }
+}
+
+/**
+ * This function continues control IN transfers started by
+ * dwc_otg_ep0_start_transfer, when the transfer does not fit in a
+ * single packet.  NOTE: The DIEPCTL0/DOEPCTL0 registers only have one
+ * bit for the packet count.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl;
+       deptsiz0_data_t deptsiz;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       dwc_otg_dev_dma_desc_t *dma_desc;
+
+       if (ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t *in_regs =
+                   core_if->dev_if->in_ep_regs[0];
+               gnptxsts_data_t tx_status = {.d32 = 0 };
+
+               tx_status.d32 =
+                   DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
+               /** @todo Should there be check for room in the Tx
+                * Status Queue.  If not remove the code above this comment. */
+
+               depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
+               deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
+
+               /* Program the transfer size and packet count
+                *      as follows: xfersize = N * maxpacket +
+                *      short_packet pktcnt = N + (short_packet
+                *      exist ? 1 : 0) 
+                */
+
+               if (core_if->dma_desc_enable == 0) {
+                       deptsiz.b.xfersize =
+                           (ep->total_len - ep->xfer_count) >
+                           ep->maxpacket ? ep->maxpacket : (ep->total_len -
+                                                            ep->xfer_count);
+                       deptsiz.b.pktcnt = 1;
+                       if (core_if->dma_enable == 0) {
+                               ep->xfer_len += deptsiz.b.xfersize;
+                       } else {
+                               ep->xfer_len = deptsiz.b.xfersize;
+                       }
+                       DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+               } else {
+                       ep->xfer_len =
+                           (ep->total_len - ep->xfer_count) >
+                           ep->maxpacket ? ep->maxpacket : (ep->total_len -
+                                                            ep->xfer_count);
+
+                       dma_desc = core_if->dev_if->in_desc_addr;
+
+                       /** DMA Descriptor Setup */
+                       dma_desc->status.b.bs = BS_HOST_BUSY;
+                       dma_desc->status.b.l = 1;
+                       dma_desc->status.b.ioc = 1;
+                       dma_desc->status.b.sp =
+                           (ep->xfer_len == ep->maxpacket) ? 0 : 1;
+                       dma_desc->status.b.bytes = ep->xfer_len;
+                       dma_desc->buf = ep->dma_addr;
+                       dma_desc->status.b.sts = 0;
+                       dma_desc->status.b.bs = BS_HOST_READY;
+
+                       /** DIEPDMA0 Register write */
+                       DWC_WRITE_REG32(&in_regs->diepdma,
+                                       core_if->dev_if->dma_in_desc_addr);
+               }
+
+               DWC_DEBUGPL(DBG_PCDV,
+                           "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+                           ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
+                           deptsiz.d32);
+
+               /* Write the DMA register */
+               if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+                       if (core_if->dma_desc_enable == 0)
+                               DWC_WRITE_REG32(&(in_regs->diepdma),
+                                               (uint32_t) ep->dma_addr);
+               }
+               if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+                       depctl.b.nextep = core_if->nextep_seq[ep->num];
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+               /**
+                * Enable the Non-Periodic Tx FIFO empty interrupt, the
+                * data will be written into the fifo by the ISR.
+                */
+               if (!core_if->dma_enable) {
+                       if (core_if->en_multiple_tx_fifo == 0) {
+                               /* First clear it from GINTSTS */
+                               intr_mask.b.nptxfempty = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                core_global_regs->gintmsk,
+                                                intr_mask.d32, intr_mask.d32);
+
+                       } else {
+                               /* Enable the Tx FIFO Empty Interrupt for this EP */
+                               if (ep->xfer_len > 0) {
+                                       uint32_t fifoemptymsk = 0;
+                                       fifoemptymsk |= 1 << ep->num;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+                                                        0, fifoemptymsk);
+                               }
+                       }
+               }
+       } else {
+               dwc_otg_dev_out_ep_regs_t *out_regs =
+                   core_if->dev_if->out_ep_regs[0];
+
+               depctl.d32 = DWC_READ_REG32(&out_regs->doepctl);
+               deptsiz.d32 = DWC_READ_REG32(&out_regs->doeptsiz);
+
+               /* Program the transfer size and packet count
+                *      as follows: xfersize = N * maxpacket +
+                *      short_packet pktcnt = N + (short_packet
+                *      exist ? 1 : 0) 
+                */
+               deptsiz.b.xfersize = ep->maxpacket;
+               deptsiz.b.pktcnt = 1;
+
+               if (core_if->dma_desc_enable == 0) {
+                       DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+               } else {
+                       dma_desc = core_if->dev_if->out_desc_addr;
+
+                       /** DMA Descriptor Setup */
+                       dma_desc->status.b.bs = BS_HOST_BUSY;
+                       dma_desc->status.b.l = 1;
+                       dma_desc->status.b.ioc = 1;
+                       dma_desc->status.b.bytes = ep->maxpacket;
+                       dma_desc->buf = ep->dma_addr;
+                       dma_desc->status.b.sts = 0;
+                       dma_desc->status.b.bs = BS_HOST_READY;
+
+                       /** DOEPDMA0 Register write */
+                       DWC_WRITE_REG32(&out_regs->doepdma,
+                                       core_if->dev_if->dma_out_desc_addr);
+               }
+
+               DWC_DEBUGPL(DBG_PCDV,
+                           "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+                           ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
+                           deptsiz.d32);
+
+               /* Write the DMA register */
+               if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+                       if (core_if->dma_desc_enable == 0)
+                               DWC_WRITE_REG32(&(out_regs->doepdma),
+                                               (uint32_t) ep->dma_addr);
+
+               }
+
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
+
+       }
+}
+
+#ifdef DEBUG
+void dump_msg(const u8 * buf, unsigned int length)
+{
+       unsigned int start, num, i;
+       char line[52], *p;
+
+       if (length >= 512)
+               return;
+       start = 0;
+       while (length > 0) {
+               num = length < 16u ? length : 16u;
+               p = line;
+               for (i = 0; i < num; ++i) {
+                       if (i == 8)
+                               *p++ = ' ';
+                       DWC_SPRINTF(p, " %02x", buf[i]);
+                       p += 3;
+               }
+               *p = 0;
+               DWC_PRINTF("%6x: %s\n", start, line);
+               buf += num;
+               start += num;
+               length -= num;
+       }
+}
+#else
+static inline void dump_msg(const u8 * buf, unsigned int length)
+{
+}
+#endif
+
+/**
+ * This function writes a packet into the Tx FIFO associated with the
+ * EP. For non-periodic EPs the non-periodic Tx FIFO is written.  For
+ * periodic EPs the periodic Tx FIFO associated with the EP is written
+ * with all packets for the next micro-frame.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to write packet for.
+ * @param dma Indicates if DMA is being used.
+ */
+void dwc_otg_ep_write_packet(dwc_otg_core_if_t * core_if, dwc_ep_t * ep,
+                            int dma)
+{
+       /**
+        * The buffer is padded to DWORD on a per packet basis in
+        * slave/dma mode if the MPS is not DWORD aligned. The last
+        * packet, if short, is also padded to a multiple of DWORD.
+        *
+        * ep->xfer_buff always starts DWORD aligned in memory and is a
+        * multiple of DWORD in length
+        *
+        * ep->xfer_len can be any number of bytes
+        *
+        * ep->xfer_count is a multiple of ep->maxpacket until the last
+        *      packet
+        *
+        * FIFO access is DWORD */
+
+       uint32_t i;
+       uint32_t byte_count;
+       uint32_t dword_count;
+       uint32_t *fifo;
+       uint32_t *data_buff = (uint32_t *) ep->xfer_buff;
+
+       DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, core_if,
+                   ep);
+       if (ep->xfer_count >= ep->xfer_len) {
+               DWC_WARN("%s() No data for EP%d!!!\n", __func__, ep->num);
+               return;
+       }
+
+       /* Find the byte length of the packet either short packet or MPS */
+       if ((ep->xfer_len - ep->xfer_count) < ep->maxpacket) {
+               byte_count = ep->xfer_len - ep->xfer_count;
+       } else {
+               byte_count = ep->maxpacket;
+       }
+
+       /* Find the DWORD length, padded by extra bytes as neccessary if MPS
+        * is not a multiple of DWORD */
+       dword_count = (byte_count + 3) / 4;
+
+#ifdef VERBOSE
+       dump_msg(ep->xfer_buff, byte_count);
+#endif
+
+       /**@todo NGS Where are the Periodic Tx FIFO addresses
+        * intialized?  What should this be? */
+
+       fifo = core_if->data_fifo[ep->num];
+
+       DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "fifo=%p buff=%p *p=%08x bc=%d\n",
+                   fifo, data_buff, *data_buff, byte_count);
+
+       if (!dma) {
+               for (i = 0; i < dword_count; i++, data_buff++) {
+                       DWC_WRITE_REG32(fifo, *data_buff);
+               }
+       }
+
+       ep->xfer_count += byte_count;
+       ep->xfer_buff += byte_count;
+       ep->dma_addr += byte_count;
+}
+
+/**
+ * Set the EP STALL.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to set the stall on.
+ */
+void dwc_otg_ep_set_stall(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl;
+       volatile uint32_t *depctl_addr;
+
+       DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
+                   (ep->is_in ? "IN" : "OUT"));
+
+       if (ep->is_in == 1) {
+               depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
+               depctl.d32 = DWC_READ_REG32(depctl_addr);
+
+               /* set the disable and stall bits */
+               if (depctl.b.epena) {
+                       depctl.b.epdis = 1;
+               }
+               depctl.b.stall = 1;
+               DWC_WRITE_REG32(depctl_addr, depctl.d32);
+       } else {
+               depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
+               depctl.d32 = DWC_READ_REG32(depctl_addr);
+
+               /* set the stall bit */
+               depctl.b.stall = 1;
+               DWC_WRITE_REG32(depctl_addr, depctl.d32);
+       }
+
+       DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", DWC_READ_REG32(depctl_addr));
+
+       return;
+}
+
+/**
+ * Clear the EP STALL.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to clear stall from.
+ */
+void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl;
+       volatile uint32_t *depctl_addr;
+
+       DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
+                   (ep->is_in ? "IN" : "OUT"));
+
+       if (ep->is_in == 1) {
+               depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
+       } else {
+               depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
+       }
+
+       depctl.d32 = DWC_READ_REG32(depctl_addr);
+
+       /* clear the stall bits */
+       depctl.b.stall = 0;
+
+       /*
+        * USB Spec 9.4.5: For endpoints using data toggle, regardless
+        * of whether an endpoint has the Halt feature set, a
+        * ClearFeature(ENDPOINT_HALT) request always results in the
+        * data toggle being reinitialized to DATA0.
+        */
+       if (ep->type == DWC_OTG_EP_TYPE_INTR ||
+           ep->type == DWC_OTG_EP_TYPE_BULK) {
+               depctl.b.setd0pid = 1;  /* DATA0 */
+       }
+
+       DWC_WRITE_REG32(depctl_addr, depctl.d32);
+       DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", DWC_READ_REG32(depctl_addr));
+       return;
+}
+
+/**
+ * This function reads a packet from the Rx FIFO into the destination
+ * buffer. To read SETUP data use dwc_otg_read_setup_packet.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dest   Destination buffer for the packet.
+ * @param bytes  Number of bytes to copy to the destination.
+ */
+void dwc_otg_read_packet(dwc_otg_core_if_t * core_if,
+                        uint8_t * dest, uint16_t bytes)
+{
+       int i;
+       int word_count = (bytes + 3) / 4;
+
+       volatile uint32_t *fifo = core_if->data_fifo[0];
+       uint32_t *data_buff = (uint32_t *) dest;
+
+       /**
+        * @todo Account for the case where _dest is not dword aligned. This
+        * requires reading data from the FIFO into a uint32_t temp buffer,
+        * then moving it into the data buffer.
+        */
+
+       DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p,%d)\n", __func__,
+                   core_if, dest, bytes);
+
+       for (i = 0; i < word_count; i++, data_buff++) {
+               *data_buff = DWC_READ_REG32(fifo);
+       }
+
+       return;
+}
+
+/**
+ * This functions reads the device registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * core_if)
+{
+       int i;
+       volatile uint32_t *addr;
+
+       DWC_PRINTF("Device Global Registers\n");
+       addr = &core_if->dev_if->dev_global_regs->dcfg;
+       DWC_PRINTF("DCFG                 @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->dctl;
+       DWC_PRINTF("DCTL                 @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->dsts;
+       DWC_PRINTF("DSTS                 @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->diepmsk;
+       DWC_PRINTF("DIEPMSK      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->doepmsk;
+       DWC_PRINTF("DOEPMSK      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->daint;
+       DWC_PRINTF("DAINT        @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->daintmsk;
+       DWC_PRINTF("DAINTMSK     @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->dev_if->dev_global_regs->dtknqr1;
+       DWC_PRINTF("DTKNQR1      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       if (core_if->hwcfg2.b.dev_token_q_depth > 6) {
+               addr = &core_if->dev_if->dev_global_regs->dtknqr2;
+               DWC_PRINTF("DTKNQR2      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+       }
+
+       addr = &core_if->dev_if->dev_global_regs->dvbusdis;
+       DWC_PRINTF("DVBUSID      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+
+       addr = &core_if->dev_if->dev_global_regs->dvbuspulse;
+       DWC_PRINTF("DVBUSPULSE  @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+
+       addr = &core_if->dev_if->dev_global_regs->dtknqr3_dthrctl;
+       DWC_PRINTF("DTKNQR3_DTHRCTL      @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+
+       if (core_if->hwcfg2.b.dev_token_q_depth > 22) {
+               addr = &core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+               DWC_PRINTF("DTKNQR4      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+       }
+
+       addr = &core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+       DWC_PRINTF("FIFOEMPMSK   @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+
+       if (core_if->hwcfg2.b.multi_proc_int) {
+
+               addr = &core_if->dev_if->dev_global_regs->deachint;
+               DWC_PRINTF("DEACHINT     @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->dev_global_regs->deachintmsk;
+               DWC_PRINTF("DEACHINTMSK  @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+
+               for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+                       addr =
+                           &core_if->dev_if->
+                           dev_global_regs->diepeachintmsk[i];
+                       DWC_PRINTF("DIEPEACHINTMSK[%d]   @0x%08lX : 0x%08X\n",
+                                  i, (unsigned long)addr,
+                                  DWC_READ_REG32(addr));
+               }
+
+               for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
+                       addr =
+                           &core_if->dev_if->
+                           dev_global_regs->doepeachintmsk[i];
+                       DWC_PRINTF("DOEPEACHINTMSK[%d]   @0x%08lX : 0x%08X\n",
+                                  i, (unsigned long)addr,
+                                  DWC_READ_REG32(addr));
+               }
+       }
+
+       for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+               DWC_PRINTF("Device IN EP %d Registers\n", i);
+               addr = &core_if->dev_if->in_ep_regs[i]->diepctl;
+               DWC_PRINTF("DIEPCTL      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->in_ep_regs[i]->diepint;
+               DWC_PRINTF("DIEPINT      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->in_ep_regs[i]->dieptsiz;
+               DWC_PRINTF("DIETSIZ      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->in_ep_regs[i]->diepdma;
+               DWC_PRINTF("DIEPDMA      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->in_ep_regs[i]->dtxfsts;
+               DWC_PRINTF("DTXFSTS      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->in_ep_regs[i]->diepdmab;
+               DWC_PRINTF("DIEPDMAB     @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, 0 /*DWC_READ_REG32(addr) */ );
+       }
+
+       for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
+               DWC_PRINTF("Device OUT EP %d Registers\n", i);
+               addr = &core_if->dev_if->out_ep_regs[i]->doepctl;
+               DWC_PRINTF("DOEPCTL      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->out_ep_regs[i]->doepint;
+               DWC_PRINTF("DOEPINT      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->out_ep_regs[i]->doeptsiz;
+               DWC_PRINTF("DOETSIZ      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->dev_if->out_ep_regs[i]->doepdma;
+               DWC_PRINTF("DOEPDMA      @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               if (core_if->dma_enable) {      /* Don't access this register in SLAVE mode */
+                       addr = &core_if->dev_if->out_ep_regs[i]->doepdmab;
+                       DWC_PRINTF("DOEPDMAB     @0x%08lX : 0x%08X\n",
+                                  (unsigned long)addr, DWC_READ_REG32(addr));
+               }
+
+       }
+}
+
+/**
+ * This functions reads the SPRAM and prints its content
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_spram(dwc_otg_core_if_t * core_if)
+{
+       volatile uint8_t *addr, *start_addr, *end_addr;
+
+       DWC_PRINTF("SPRAM Data:\n");
+       start_addr = (void *)core_if->core_global_regs;
+       DWC_PRINTF("Base Address: 0x%8lX\n", (unsigned long)start_addr);
+       start_addr += 0x00028000;
+       end_addr = (void *)core_if->core_global_regs;
+       end_addr += 0x000280e0;
+
+       for (addr = start_addr; addr < end_addr; addr += 16) {
+               DWC_PRINTF
+                   ("0x%8lX:\t%2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X\n",
+                    (unsigned long)addr, addr[0], addr[1], addr[2], addr[3],
+                    addr[4], addr[5], addr[6], addr[7], addr[8], addr[9],
+                    addr[10], addr[11], addr[12], addr[13], addr[14], addr[15]
+                   );
+       }
+
+       return;
+}
+
+/**
+ * This function reads the host registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_host_registers(dwc_otg_core_if_t * core_if)
+{
+       int i;
+       volatile uint32_t *addr;
+
+       DWC_PRINTF("Host Global Registers\n");
+       addr = &core_if->host_if->host_global_regs->hcfg;
+       DWC_PRINTF("HCFG                 @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+       addr = &core_if->host_if->host_global_regs->hfir;
+       DWC_PRINTF("HFIR                 @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+       addr = &core_if->host_if->host_global_regs->hfnum;
+       DWC_PRINTF("HFNUM        @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->host_if->host_global_regs->hptxsts;
+       DWC_PRINTF("HPTXSTS      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->host_if->host_global_regs->haint;
+       DWC_PRINTF("HAINT        @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->host_if->host_global_regs->haintmsk;
+       DWC_PRINTF("HAINTMSK     @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       if (core_if->dma_desc_enable) {
+               addr = &core_if->host_if->host_global_regs->hflbaddr;
+               DWC_PRINTF("HFLBADDR     @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+       }
+
+       addr = core_if->host_if->hprt0;
+       DWC_PRINTF("HPRT0        @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+
+       for (i = 0; i < core_if->core_params->host_channels; i++) {
+               DWC_PRINTF("Host Channel %d Specific Registers\n", i);
+               addr = &core_if->host_if->hc_regs[i]->hcchar;
+               DWC_PRINTF("HCCHAR       @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->host_if->hc_regs[i]->hcsplt;
+               DWC_PRINTF("HCSPLT       @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->host_if->hc_regs[i]->hcint;
+               DWC_PRINTF("HCINT        @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->host_if->hc_regs[i]->hcintmsk;
+               DWC_PRINTF("HCINTMSK     @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->host_if->hc_regs[i]->hctsiz;
+               DWC_PRINTF("HCTSIZ       @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               addr = &core_if->host_if->hc_regs[i]->hcdma;
+               DWC_PRINTF("HCDMA        @0x%08lX : 0x%08X\n",
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+               if (core_if->dma_desc_enable) {
+                       addr = &core_if->host_if->hc_regs[i]->hcdmab;
+                       DWC_PRINTF("HCDMAB       @0x%08lX : 0x%08X\n",
+                                  (unsigned long)addr, DWC_READ_REG32(addr));
+               }
+
+       }
+       return;
+}
+
+/**
+ * This function reads the core global registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_global_registers(dwc_otg_core_if_t * core_if)
+{
+       int i, ep_num;
+       volatile uint32_t *addr;
+       char *txfsiz;
+
+       DWC_PRINTF("Core Global Registers\n");
+       addr = &core_if->core_global_regs->gotgctl;
+       DWC_PRINTF("GOTGCTL      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gotgint;
+       DWC_PRINTF("GOTGINT      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gahbcfg;
+       DWC_PRINTF("GAHBCFG      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gusbcfg;
+       DWC_PRINTF("GUSBCFG      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->grstctl;
+       DWC_PRINTF("GRSTCTL      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gintsts;
+       DWC_PRINTF("GINTSTS      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gintmsk;
+       DWC_PRINTF("GINTMSK      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->grxstsr;
+       DWC_PRINTF("GRXSTSR      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->grxfsiz;
+       DWC_PRINTF("GRXFSIZ      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gnptxfsiz;
+       DWC_PRINTF("GNPTXFSIZ @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gnptxsts;
+       DWC_PRINTF("GNPTXSTS     @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gi2cctl;
+       DWC_PRINTF("GI2CCTL      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gpvndctl;
+       DWC_PRINTF("GPVNDCTL     @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->ggpio;
+       DWC_PRINTF("GGPIO        @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->guid;
+       DWC_PRINTF("GUID                 @0x%08lX : 0x%08X\n",
+                  (unsigned long)addr, DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gsnpsid;
+       DWC_PRINTF("GSNPSID      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->ghwcfg1;
+       DWC_PRINTF("GHWCFG1      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->ghwcfg2;
+       DWC_PRINTF("GHWCFG2      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->ghwcfg3;
+       DWC_PRINTF("GHWCFG3      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->ghwcfg4;
+       DWC_PRINTF("GHWCFG4      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->glpmcfg;
+       DWC_PRINTF("GLPMCFG      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gpwrdn;
+       DWC_PRINTF("GPWRDN       @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->gdfifocfg;
+       DWC_PRINTF("GDFIFOCFG    @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+       addr = &core_if->core_global_regs->adpctl;
+       DWC_PRINTF("ADPCTL       @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  dwc_otg_adp_read_reg(core_if));
+       addr = &core_if->core_global_regs->hptxfsiz;
+       DWC_PRINTF("HPTXFSIZ     @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+
+       if (core_if->en_multiple_tx_fifo == 0) {
+               ep_num = core_if->hwcfg4.b.num_dev_perio_in_ep;
+               txfsiz = "DPTXFSIZ";
+       } else {
+               ep_num = core_if->hwcfg4.b.num_in_eps;
+               txfsiz = "DIENPTXF";
+       }
+       for (i = 0; i < ep_num; i++) {
+               addr = &core_if->core_global_regs->dtxfsiz[i];
+               DWC_PRINTF("%s[%d] @0x%08lX : 0x%08X\n", txfsiz, i + 1,
+                          (unsigned long)addr, DWC_READ_REG32(addr));
+       }
+       addr = core_if->pcgcctl;
+       DWC_PRINTF("PCGCCTL      @0x%08lX : 0x%08X\n", (unsigned long)addr,
+                  DWC_READ_REG32(addr));
+}
+
+/**
+ * Flush a Tx FIFO.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param num Tx FIFO to flush.
+ */
+void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * core_if, const int num)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       volatile grstctl_t greset = {.d32 = 0 };
+       int count = 0;
+
+       DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "Flush Tx FIFO %d\n", num);
+
+       greset.b.txfflsh = 1;
+       greset.b.txfnum = num;
+       DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
+
+       do {
+               greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+               if (++count > 10000) {
+                       DWC_WARN("%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n",
+                                __func__, greset.d32,
+                                DWC_READ_REG32(&global_regs->gnptxsts));
+                       break;
+               }
+               dwc_udelay(1);
+       } while (greset.b.txfflsh == 1);
+
+       /* Wait for 3 PHY Clocks */
+       dwc_udelay(1);
+}
+
+/**
+ * Flush Rx FIFO.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       volatile grstctl_t greset = {.d32 = 0 };
+       int count = 0;
+
+       DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "%s\n", __func__);
+       /*
+        *
+        */
+       greset.b.rxfflsh = 1;
+       DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
+
+       do {
+               greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+               if (++count > 10000) {
+                       DWC_WARN("%s() HANG! GRSTCTL=%0x\n", __func__,
+                                greset.d32);
+                       break;
+               }
+               dwc_udelay(1);
+       } while (greset.b.rxfflsh == 1);
+
+       /* Wait for 3 PHY Clocks */
+       dwc_udelay(1);
+}
+
+/**
+ * Do core a soft reset of the core.  Be careful with this because it
+ * resets all the internal state machines of the core.
+ */
+void dwc_otg_core_reset(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       volatile grstctl_t greset = {.d32 = 0 };
+       int count = 0;
+
+       DWC_DEBUGPL(DBG_CILV, "%s\n", __func__);
+       /* Wait for AHB master IDLE state. */
+       do {
+               dwc_udelay(10);
+               greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+               if (++count > 100000) {
+                       DWC_WARN("%s() HANG! AHB Idle GRSTCTL=%0x\n", __func__,
+                                greset.d32);
+                       return;
+               }
+       }
+       while (greset.b.ahbidle == 0);
+
+       /* Core Soft Reset */
+       count = 0;
+       greset.b.csftrst = 1;
+       DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
+       do {
+               greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+               if (++count > 10000) {
+                       DWC_WARN("%s() HANG! Soft Reset GRSTCTL=%0x\n",
+                                __func__, greset.d32);
+                       break;
+               }
+               dwc_udelay(1);
+       }
+       while (greset.b.csftrst == 1);
+
+       /* Wait for 3 PHY Clocks */
+       dwc_mdelay(100);
+}
+
+uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t * _core_if)
+{
+       return (dwc_otg_mode(_core_if) != DWC_HOST_MODE);
+}
+
+uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t * _core_if)
+{
+       return (dwc_otg_mode(_core_if) == DWC_HOST_MODE);
+}
+
+/**
+ * Register HCD callbacks. The callbacks are used to start and stop
+ * the HCD for interrupt processing.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param cb the HCD callback structure.
+ * @param p pointer to be passed to callback function (usb_hcd*).
+ */
+void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * core_if,
+                                       dwc_otg_cil_callbacks_t * cb, void *p)
+{
+       core_if->hcd_cb = cb;
+       cb->p = p;
+}
+
+/**
+ * Register PCD callbacks. The callbacks are used to start and stop
+ * the PCD for interrupt processing.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param cb the PCD callback structure.
+ * @param p pointer to be passed to callback function (pcd*).
+ */
+void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * core_if,
+                                       dwc_otg_cil_callbacks_t * cb, void *p)
+{
+       core_if->pcd_cb = cb;
+       cb->p = p;
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function writes isoc data per 1 (micro)frame into tx fifo
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void write_isoc_frame_data(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       dwc_otg_dev_in_ep_regs_t *ep_regs;
+       dtxfsts_data_t txstatus = {.d32 = 0 };
+       uint32_t len = 0;
+       uint32_t dwords;
+
+       ep->xfer_len = ep->data_per_frame;
+       ep->xfer_count = 0;
+
+       ep_regs = core_if->dev_if->in_ep_regs[ep->num];
+
+       len = ep->xfer_len - ep->xfer_count;
+
+       if (len > ep->maxpacket) {
+               len = ep->maxpacket;
+       }
+
+       dwords = (len + 3) / 4;
+
+       /* While there is space in the queue and space in the FIFO and
+        * More data to tranfer, Write packets to the Tx FIFO */
+       txstatus.d32 =
+           DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->dtxfsts);
+       DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", ep->num, txstatus.d32);
+
+       while (txstatus.b.txfspcavail > dwords &&
+              ep->xfer_count < ep->xfer_len && ep->xfer_len != 0) {
+               /* Write the FIFO */
+               dwc_otg_ep_write_packet(core_if, ep, 0);
+
+               len = ep->xfer_len - ep->xfer_count;
+               if (len > ep->maxpacket) {
+                       len = ep->maxpacket;
+               }
+
+               dwords = (len + 3) / 4;
+               txstatus.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                  dtxfsts);
+               DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", ep->num,
+                           txstatus.d32);
+       }
+}
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t * core_if,
+                                      dwc_ep_t * ep)
+{
+       deptsiz_data_t deptsiz = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       dsts_data_t dsts = {.d32 = 0 };
+       volatile uint32_t *addr;
+
+       if (ep->is_in) {
+               addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+       } else {
+               addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+       }
+
+       ep->xfer_len = ep->data_per_frame;
+       ep->xfer_count = 0;
+       ep->xfer_buff = ep->cur_pkt_addr;
+       ep->dma_addr = ep->cur_pkt_dma_addr;
+
+       if (ep->is_in) {
+               /* Program the transfer size and packet count
+                *      as follows: xfersize = N * maxpacket +
+                *      short_packet pktcnt = N + (short_packet
+                *      exist ? 1 : 0) 
+                */
+               deptsiz.b.xfersize = ep->xfer_len;
+               deptsiz.b.pktcnt =
+                   (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
+               deptsiz.b.mc = deptsiz.b.pktcnt;
+               DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz,
+                               deptsiz.d32);
+
+               /* Write the DMA register */
+               if (core_if->dma_enable) {
+                       DWC_WRITE_REG32(&
+                                       (core_if->dev_if->in_ep_regs[ep->num]->
+                                        diepdma), (uint32_t) ep->dma_addr);
+               }
+       } else {
+               deptsiz.b.pktcnt =
+                   (ep->xfer_len + (ep->maxpacket - 1)) / ep->maxpacket;
+               deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+
+               DWC_WRITE_REG32(&core_if->dev_if->
+                               out_ep_regs[ep->num]->doeptsiz, deptsiz.d32);
+
+               if (core_if->dma_enable) {
+                       DWC_WRITE_REG32(&
+                                       (core_if->dev_if->
+                                        out_ep_regs[ep->num]->doepdma),
+                                       (uint32_t) ep->dma_addr);
+               }
+       }
+
+       /** Enable endpoint, clear nak  */
+
+       depctl.d32 = 0;
+       if (ep->bInterval == 1) {
+               dsts.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+               ep->next_frame = dsts.b.soffn + ep->bInterval;
+
+               if (ep->next_frame & 0x1) {
+                       depctl.b.setd1pid = 1;
+               } else {
+                       depctl.b.setd0pid = 1;
+               }
+       } else {
+               ep->next_frame += ep->bInterval;
+
+               if (ep->next_frame & 0x1) {
+                       depctl.b.setd1pid = 1;
+               } else {
+                       depctl.b.setd0pid = 1;
+               }
+       }
+       depctl.b.epena = 1;
+       depctl.b.cnak = 1;
+
+       DWC_MODIFY_REG32(addr, 0, depctl.d32);
+       depctl.d32 = DWC_READ_REG32(addr);
+
+       if (ep->is_in && core_if->dma_enable == 0) {
+               write_isoc_frame_data(core_if, ep);
+       }
+
+}
+#endif /* DWC_EN_ISOC */
+
+static void dwc_otg_set_uninitialized(int32_t * p, int size)
+{
+       int i;
+       for (i = 0; i < size; i++) {
+               p[i] = -1;
+       }
+}
+
+static int dwc_otg_param_initialized(int32_t val)
+{
+       return val != -1;
+}
+
+static int dwc_otg_setup_params(dwc_otg_core_if_t * core_if)
+{
+       int i;
+       core_if->core_params = DWC_ALLOC(sizeof(*core_if->core_params));
+       if (!core_if->core_params) {
+               return -DWC_E_NO_MEMORY;
+       }
+       dwc_otg_set_uninitialized((int32_t *) core_if->core_params,
+                                 sizeof(*core_if->core_params) /
+                                 sizeof(int32_t));
+       DWC_PRINTF("Setting default values for core params\n");
+       dwc_otg_set_param_otg_cap(core_if, dwc_param_otg_cap_default);
+       dwc_otg_set_param_dma_enable(core_if, dwc_param_dma_enable_default);
+       dwc_otg_set_param_dma_desc_enable(core_if,
+                                         dwc_param_dma_desc_enable_default);
+       dwc_otg_set_param_opt(core_if, dwc_param_opt_default);
+       dwc_otg_set_param_dma_burst_size(core_if,
+                                        dwc_param_dma_burst_size_default);
+       dwc_otg_set_param_host_support_fs_ls_low_power(core_if,
+                                                      dwc_param_host_support_fs_ls_low_power_default);
+       dwc_otg_set_param_enable_dynamic_fifo(core_if,
+                                             dwc_param_enable_dynamic_fifo_default);
+       dwc_otg_set_param_data_fifo_size(core_if,
+                                        dwc_param_data_fifo_size_default);
+       dwc_otg_set_param_dev_rx_fifo_size(core_if,
+                                          dwc_param_dev_rx_fifo_size_default);
+       dwc_otg_set_param_dev_nperio_tx_fifo_size(core_if,
+                                                 dwc_param_dev_nperio_tx_fifo_size_default);
+       dwc_otg_set_param_host_rx_fifo_size(core_if,
+                                           dwc_param_host_rx_fifo_size_default);
+       dwc_otg_set_param_host_nperio_tx_fifo_size(core_if,
+                                                  dwc_param_host_nperio_tx_fifo_size_default);
+       dwc_otg_set_param_host_perio_tx_fifo_size(core_if,
+                                                 dwc_param_host_perio_tx_fifo_size_default);
+       dwc_otg_set_param_max_transfer_size(core_if,
+                                           dwc_param_max_transfer_size_default);
+       dwc_otg_set_param_max_packet_count(core_if,
+                                          dwc_param_max_packet_count_default);
+       dwc_otg_set_param_host_channels(core_if,
+                                       dwc_param_host_channels_default);
+       dwc_otg_set_param_dev_endpoints(core_if,
+                                       dwc_param_dev_endpoints_default);
+       dwc_otg_set_param_phy_type(core_if, dwc_param_phy_type_default);
+       dwc_otg_set_param_speed(core_if, dwc_param_speed_default);
+       dwc_otg_set_param_host_ls_low_power_phy_clk(core_if,
+                                                   dwc_param_host_ls_low_power_phy_clk_default);
+       dwc_otg_set_param_phy_ulpi_ddr(core_if, dwc_param_phy_ulpi_ddr_default);
+       dwc_otg_set_param_phy_ulpi_ext_vbus(core_if,
+                                           dwc_param_phy_ulpi_ext_vbus_default);
+       dwc_otg_set_param_phy_utmi_width(core_if,
+                                        dwc_param_phy_utmi_width_default);
+       dwc_otg_set_param_ts_dline(core_if, dwc_param_ts_dline_default);
+       dwc_otg_set_param_i2c_enable(core_if, dwc_param_i2c_enable_default);
+       dwc_otg_set_param_ulpi_fs_ls(core_if, dwc_param_ulpi_fs_ls_default);
+       dwc_otg_set_param_en_multiple_tx_fifo(core_if,
+                                             dwc_param_en_multiple_tx_fifo_default);
+       for (i = 0; i < 15; i++) {
+               dwc_otg_set_param_dev_perio_tx_fifo_size(core_if,
+                                                        dwc_param_dev_perio_tx_fifo_size_default,
+                                                        i);
+       }
+
+       for (i = 0; i < 15; i++) {
+               dwc_otg_set_param_dev_tx_fifo_size(core_if,
+                                                  dwc_param_dev_tx_fifo_size_default,
+                                                  i);
+       }
+       dwc_otg_set_param_thr_ctl(core_if, dwc_param_thr_ctl_default);
+       dwc_otg_set_param_mpi_enable(core_if, dwc_param_mpi_enable_default);
+       dwc_otg_set_param_pti_enable(core_if, dwc_param_pti_enable_default);
+       dwc_otg_set_param_lpm_enable(core_if, dwc_param_lpm_enable_default);
+       dwc_otg_set_param_ic_usb_cap(core_if, dwc_param_ic_usb_cap_default);
+       dwc_otg_set_param_tx_thr_length(core_if,
+                                       dwc_param_tx_thr_length_default);
+       dwc_otg_set_param_rx_thr_length(core_if,
+                                       dwc_param_rx_thr_length_default);
+       dwc_otg_set_param_ahb_thr_ratio(core_if,
+                                       dwc_param_ahb_thr_ratio_default);
+       dwc_otg_set_param_power_down(core_if, dwc_param_power_down_default);
+       dwc_otg_set_param_reload_ctl(core_if, dwc_param_reload_ctl_default);
+       dwc_otg_set_param_dev_out_nak(core_if, dwc_param_dev_out_nak_default);
+       dwc_otg_set_param_cont_on_bna(core_if, dwc_param_cont_on_bna_default);
+       dwc_otg_set_param_ahb_single(core_if, dwc_param_ahb_single_default);
+       dwc_otg_set_param_otg_ver(core_if, dwc_param_otg_ver_default);
+       dwc_otg_set_param_adp_enable(core_if, dwc_param_adp_enable_default);
+       DWC_PRINTF("Finished setting default values for core params\n");
+
+       return 0;
+}
+
+uint8_t dwc_otg_is_dma_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->dma_enable;
+}
+
+/* Checks if the parameter is outside of its valid range of values */
+#define DWC_OTG_PARAM_TEST(_param_, _low_, _high_) \
+               (((_param_) < (_low_)) || \
+               ((_param_) > (_high_)))
+
+/* Parameter access functions */
+int dwc_otg_set_param_otg_cap(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int valid;
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 2)) {
+               DWC_WARN("Wrong value for otg_cap parameter\n");
+               DWC_WARN("otg_cap parameter must be 0,1 or 2\n");
+               retval = -DWC_E_INVALID;
+               goto out;
+       }
+
+       valid = 1;
+       switch (val) {
+       case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE:
+               if (core_if->hwcfg2.b.op_mode !=
+                   DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+                       valid = 0;
+               break;
+       case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE:
+               if ((core_if->hwcfg2.b.op_mode !=
+                    DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+                   && (core_if->hwcfg2.b.op_mode !=
+                       DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
+                   && (core_if->hwcfg2.b.op_mode !=
+                       DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE)
+                   && (core_if->hwcfg2.b.op_mode !=
+                       DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) {
+                       valid = 0;
+               }
+               break;
+       case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE:
+               /* always valid */
+               break;
+       }
+       if (!valid) {
+               if (dwc_otg_param_initialized(core_if->core_params->otg_cap)) {
+                       DWC_ERROR
+                           ("%d invalid for otg_cap paremter. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   (((core_if->hwcfg2.b.op_mode ==
+                      DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+                     || (core_if->hwcfg2.b.op_mode ==
+                         DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
+                     || (core_if->hwcfg2.b.op_mode ==
+                         DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE)
+                     || (core_if->hwcfg2.b.op_mode ==
+                         DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) ?
+                    DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE :
+                    DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->otg_cap = val;
+out:
+       return retval;
+}
+
+int32_t dwc_otg_get_param_otg_cap(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->otg_cap;
+}
+
+int dwc_otg_set_param_opt(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for opt parameter\n");
+               return -DWC_E_INVALID;
+       }
+       core_if->core_params->opt = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_opt(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->opt;
+}
+
+int dwc_otg_set_param_dma_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for dma enable\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1) && (core_if->hwcfg2.b.architecture == 0)) {
+               if (dwc_otg_param_initialized(core_if->core_params->dma_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for dma_enable paremter. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->dma_enable = val;
+       if (val == 0) {
+               dwc_otg_set_param_dma_desc_enable(core_if, 0);
+       }
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dma_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dma_enable;
+}
+
+int dwc_otg_set_param_dma_desc_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for dma_enable\n");
+               DWC_WARN("dma_desc_enable must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1)
+           && ((dwc_otg_get_param_dma_enable(core_if) == 0)
+               || (core_if->hwcfg4.b.desc_dma == 0))) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->dma_desc_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for dma_desc_enable paremter. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+       core_if->core_params->dma_desc_enable = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dma_desc_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dma_desc_enable;
+}
+
+int dwc_otg_set_param_host_support_fs_ls_low_power(dwc_otg_core_if_t * core_if,
+                                                  int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for host_support_fs_low_power\n");
+               DWC_WARN("host_support_fs_low_power must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+       core_if->core_params->host_support_fs_ls_low_power = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_host_support_fs_ls_low_power(dwc_otg_core_if_t *
+                                                      core_if)
+{
+       return core_if->core_params->host_support_fs_ls_low_power;
+}
+
+int dwc_otg_set_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if,
+                                         int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for enable_dynamic_fifo\n");
+               DWC_WARN("enable_dynamic_fifo must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1) && (core_if->hwcfg2.b.dynamic_fifo == 0)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->enable_dynamic_fifo)) {
+                       DWC_ERROR
+                           ("%d invalid for enable_dynamic_fifo paremter. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+       core_if->core_params->enable_dynamic_fifo = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->enable_dynamic_fifo;
+}
+
+int dwc_otg_set_param_data_fifo_size(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 32, 32768)) {
+               DWC_WARN("Wrong value for data_fifo_size\n");
+               DWC_WARN("data_fifo_size must be 32-32768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > core_if->hwcfg3.b.dfifo_depth) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->data_fifo_size)) {
+                       DWC_ERROR
+                           ("%d invalid for data_fifo_size parameter. Check HW configuration.\n",
+                            val);
+               }
+               val = core_if->hwcfg3.b.dfifo_depth;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->data_fifo_size = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_data_fifo_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->data_fifo_size;
+}
+
+int dwc_otg_set_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+               DWC_WARN("Wrong value for dev_rx_fifo_size\n");
+               DWC_WARN("dev_rx_fifo_size must be 16-32768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > DWC_READ_REG32(&core_if->core_global_regs->grxfsiz)) {
+               if (dwc_otg_param_initialized(core_if->core_params->dev_rx_fifo_size)) {
+               DWC_WARN("%d invalid for dev_rx_fifo_size parameter\n", val);
+               }
+               val = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->dev_rx_fifo_size = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dev_rx_fifo_size;
+}
+
+int dwc_otg_set_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                             int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+               DWC_WARN("Wrong value for dev_nperio_tx_fifo\n");
+               DWC_WARN("dev_nperio_tx_fifo must be 16-32768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >> 16)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->dev_nperio_tx_fifo_size)) {
+                       DWC_ERROR
+                           ("%d invalid for dev_nperio_tx_fifo_size. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >>
+                    16);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->dev_nperio_tx_fifo_size = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dev_nperio_tx_fifo_size;
+}
+
+int dwc_otg_set_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if,
+                                       int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+               DWC_WARN("Wrong value for host_rx_fifo_size\n");
+               DWC_WARN("host_rx_fifo_size must be 16-32768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > DWC_READ_REG32(&core_if->core_global_regs->grxfsiz)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->host_rx_fifo_size)) {
+                       DWC_ERROR
+                           ("%d invalid for host_rx_fifo_size. Check HW configuration.\n",
+                            val);
+               }
+               val = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->host_rx_fifo_size = val;
+       return retval;
+
+}
+
+int32_t dwc_otg_get_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->host_rx_fifo_size;
+}
+
+int dwc_otg_set_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                              int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+               DWC_WARN("Wrong value for host_nperio_tx_fifo_size\n");
+               DWC_WARN("host_nperio_tx_fifo_size must be 16-32768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >> 16)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->host_nperio_tx_fifo_size)) {
+                       DWC_ERROR
+                           ("%d invalid for host_nperio_tx_fifo_size. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >>
+                    16);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->host_nperio_tx_fifo_size = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->host_nperio_tx_fifo_size;
+}
+
+int dwc_otg_set_param_host_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                             int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+               DWC_WARN("Wrong value for host_perio_tx_fifo_size\n");
+               DWC_WARN("host_perio_tx_fifo_size must be 16-32768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > ((core_if->hptxfsiz.d32) >> 16)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->host_perio_tx_fifo_size)) {
+                       DWC_ERROR
+                           ("%d invalid for host_perio_tx_fifo_size. Check HW configuration.\n",
+                            val);
+               }
+               val = (core_if->hptxfsiz.d32) >> 16;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->host_perio_tx_fifo_size = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_host_perio_tx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->host_perio_tx_fifo_size;
+}
+
+int dwc_otg_set_param_max_transfer_size(dwc_otg_core_if_t * core_if,
+                                       int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 2047, 524288)) {
+               DWC_WARN("Wrong value for max_transfer_size\n");
+               DWC_WARN("max_transfer_size must be 2047-524288\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val >= (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->max_transfer_size)) {
+                       DWC_ERROR
+                           ("%d invalid for max_transfer_size. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 11)) -
+                    1);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->max_transfer_size = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_max_transfer_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->max_transfer_size;
+}
+
+int dwc_otg_set_param_max_packet_count(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 15, 511)) {
+               DWC_WARN("Wrong value for max_packet_count\n");
+               DWC_WARN("max_packet_count must be 15-511\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->max_packet_count)) {
+                       DWC_ERROR
+                           ("%d invalid for max_packet_count. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4)) - 1);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->max_packet_count = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_max_packet_count(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->max_packet_count;
+}
+
+int dwc_otg_set_param_host_channels(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 1, 16)) {
+               DWC_WARN("Wrong value for host_channels\n");
+               DWC_WARN("host_channels must be 1-16\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > (core_if->hwcfg2.b.num_host_chan + 1)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->host_channels)) {
+                       DWC_ERROR
+                           ("%d invalid for host_channels. Check HW configurations.\n",
+                            val);
+               }
+               val = (core_if->hwcfg2.b.num_host_chan + 1);
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->host_channels = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_host_channels(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->host_channels;
+}
+
+int dwc_otg_set_param_dev_endpoints(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 1, 15)) {
+               DWC_WARN("Wrong value for dev_endpoints\n");
+               DWC_WARN("dev_endpoints must be 1-15\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val > (core_if->hwcfg2.b.num_dev_ep)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->dev_endpoints)) {
+                       DWC_ERROR
+                           ("%d invalid for dev_endpoints. Check HW configurations.\n",
+                            val);
+               }
+               val = core_if->hwcfg2.b.num_dev_ep;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->dev_endpoints = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dev_endpoints(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dev_endpoints;
+}
+
+int dwc_otg_set_param_phy_type(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 2)) {
+               DWC_WARN("Wrong value for phy_type\n");
+               DWC_WARN("phy_type must be 0,1 or 2\n");
+               return -DWC_E_INVALID;
+       }
+#ifndef NO_FS_PHY_HW_CHECKS
+       if ((val == DWC_PHY_TYPE_PARAM_UTMI) &&
+           ((core_if->hwcfg2.b.hs_phy_type == 1) ||
+            (core_if->hwcfg2.b.hs_phy_type == 3))) {
+               valid = 1;
+       } else if ((val == DWC_PHY_TYPE_PARAM_ULPI) &&
+                  ((core_if->hwcfg2.b.hs_phy_type == 2) ||
+                   (core_if->hwcfg2.b.hs_phy_type == 3))) {
+               valid = 1;
+       } else if ((val == DWC_PHY_TYPE_PARAM_FS) &&
+                  (core_if->hwcfg2.b.fs_phy_type == 1)) {
+               valid = 1;
+       }
+       if (!valid) {
+               if (dwc_otg_param_initialized(core_if->core_params->phy_type)) {
+                       DWC_ERROR
+                           ("%d invalid for phy_type. Check HW configurations.\n",
+                            val);
+               }
+               if (core_if->hwcfg2.b.hs_phy_type) {
+                       if ((core_if->hwcfg2.b.hs_phy_type == 3) ||
+                           (core_if->hwcfg2.b.hs_phy_type == 1)) {
+                               val = DWC_PHY_TYPE_PARAM_UTMI;
+                       } else {
+                               val = DWC_PHY_TYPE_PARAM_ULPI;
+                       }
+               }
+               retval = -DWC_E_INVALID;
+       }
+#endif
+       core_if->core_params->phy_type = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_phy_type(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->phy_type;
+}
+
+int dwc_otg_set_param_speed(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for speed parameter\n");
+               DWC_WARN("max_speed parameter must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+       if ((val == 0)
+           && dwc_otg_get_param_phy_type(core_if) == DWC_PHY_TYPE_PARAM_FS) {
+               if (dwc_otg_param_initialized(core_if->core_params->speed)) {
+                       DWC_ERROR
+                           ("%d invalid for speed paremter. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   (dwc_otg_get_param_phy_type(core_if) ==
+                    DWC_PHY_TYPE_PARAM_FS ? 1 : 0);
+               retval = -DWC_E_INVALID;
+       }
+       core_if->core_params->speed = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_speed(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->speed;
+}
+
+int dwc_otg_set_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t * core_if,
+                                               int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN
+                   ("Wrong value for host_ls_low_power_phy_clk parameter\n");
+               DWC_WARN("host_ls_low_power_phy_clk must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ)
+           && (dwc_otg_get_param_phy_type(core_if) == DWC_PHY_TYPE_PARAM_FS)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->host_ls_low_power_phy_clk)) {
+                       DWC_ERROR
+                           ("%d invalid for host_ls_low_power_phy_clk. Check HW configuration.\n",
+                            val);
+               }
+               val =
+                   (dwc_otg_get_param_phy_type(core_if) ==
+                    DWC_PHY_TYPE_PARAM_FS) ?
+                   DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ :
+                   DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->host_ls_low_power_phy_clk = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->host_ls_low_power_phy_clk;
+}
+
+int dwc_otg_set_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for phy_ulpi_ddr\n");
+               DWC_WARN("phy_upli_ddr must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->phy_ulpi_ddr = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->phy_ulpi_ddr;
+}
+
+int dwc_otg_set_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if,
+                                       int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong valaue for phy_ulpi_ext_vbus\n");
+               DWC_WARN("phy_ulpi_ext_vbus must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->phy_ulpi_ext_vbus = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->phy_ulpi_ext_vbus;
+}
+
+int dwc_otg_set_param_phy_utmi_width(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 8, 8) && DWC_OTG_PARAM_TEST(val, 16, 16)) {
+               DWC_WARN("Wrong valaue for phy_utmi_width\n");
+               DWC_WARN("phy_utmi_width must be 8 or 16\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->phy_utmi_width = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_phy_utmi_width(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->phy_utmi_width;
+}
+
+int dwc_otg_set_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong valaue for ulpi_fs_ls\n");
+               DWC_WARN("ulpi_fs_ls must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->ulpi_fs_ls = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->ulpi_fs_ls;
+}
+
+int dwc_otg_set_param_ts_dline(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong valaue for ts_dline\n");
+               DWC_WARN("ts_dline must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->ts_dline = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_ts_dline(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->ts_dline;
+}
+
+int dwc_otg_set_param_i2c_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong valaue for i2c_enable\n");
+               DWC_WARN("i2c_enable must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+#ifndef NO_FS_PHY_HW_CHECK
+       if (val == 1 && core_if->hwcfg3.b.i2c == 0) {
+               if (dwc_otg_param_initialized(core_if->core_params->i2c_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for i2c_enable. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+#endif
+
+       core_if->core_params->i2c_enable = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_i2c_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->i2c_enable;
+}
+
+int dwc_otg_set_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                            int32_t val, int fifo_num)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 4, 768)) {
+               DWC_WARN("Wrong value for dev_perio_tx_fifo_size\n");
+               DWC_WARN("dev_perio_tx_fifo_size must be 4-768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val >
+           (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]))) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->dev_perio_tx_fifo_size[fifo_num])) {
+                       DWC_ERROR
+                           ("`%d' invalid for parameter `dev_perio_fifo_size_%d'. Check HW configuration.\n",
+                            val, fifo_num);
+               }
+               val = (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]));
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->dev_perio_tx_fifo_size[fifo_num] = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                                int fifo_num)
+{
+       return core_if->core_params->dev_perio_tx_fifo_size[fifo_num];
+}
+
+int dwc_otg_set_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if,
+                                         int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong valaue for en_multiple_tx_fifo,\n");
+               DWC_WARN("en_multiple_tx_fifo must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val == 1 && core_if->hwcfg4.b.ded_fifo_en == 0) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->en_multiple_tx_fifo)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter en_multiple_tx_fifo. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->en_multiple_tx_fifo = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->en_multiple_tx_fifo;
+}
+
+int dwc_otg_set_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if, int32_t val,
+                                      int fifo_num)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 4, 768)) {
+               DWC_WARN("Wrong value for dev_tx_fifo_size\n");
+               DWC_WARN("dev_tx_fifo_size must be 4-768\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val >
+           (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]))) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->dev_tx_fifo_size[fifo_num])) {
+                       DWC_ERROR
+                           ("`%d' invalid for parameter `dev_tx_fifo_size_%d'. Check HW configuration.\n",
+                            val, fifo_num);
+               }
+               val = (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]));
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->dev_tx_fifo_size[fifo_num] = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                          int fifo_num)
+{
+       return core_if->core_params->dev_tx_fifo_size[fifo_num];
+}
+
+int dwc_otg_set_param_thr_ctl(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 7)) {
+               DWC_WARN("Wrong value for thr_ctl\n");
+               DWC_WARN("thr_ctl must be 0-7\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val != 0) &&
+           (!dwc_otg_get_param_dma_enable(core_if) ||
+            !core_if->hwcfg4.b.ded_fifo_en)) {
+               if (dwc_otg_param_initialized(core_if->core_params->thr_ctl)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter thr_ctl. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->thr_ctl = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_thr_ctl(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->thr_ctl;
+}
+
+int dwc_otg_set_param_lpm_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("Wrong value for lpm_enable\n");
+               DWC_WARN("lpm_enable must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val && !core_if->hwcfg3.b.otg_lpm_en) {
+               if (dwc_otg_param_initialized(core_if->core_params->lpm_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter lpm_enable. Check HW configuration.\n",
+                            val);
+               }
+               val = 0;
+               retval = -DWC_E_INVALID;
+       }
+
+       core_if->core_params->lpm_enable = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_lpm_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->lpm_enable;
+}
+
+int dwc_otg_set_param_tx_thr_length(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 8, 128)) {
+               DWC_WARN("Wrong valaue for tx_thr_length\n");
+               DWC_WARN("tx_thr_length must be 8 - 128\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->tx_thr_length = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_tx_thr_length(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->tx_thr_length;
+}
+
+int dwc_otg_set_param_rx_thr_length(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 8, 128)) {
+               DWC_WARN("Wrong valaue for rx_thr_length\n");
+               DWC_WARN("rx_thr_length must be 8 - 128\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->rx_thr_length = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_rx_thr_length(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->rx_thr_length;
+}
+
+int dwc_otg_set_param_dma_burst_size(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       if (DWC_OTG_PARAM_TEST(val, 1, 1) &&
+           DWC_OTG_PARAM_TEST(val, 4, 4) &&
+           DWC_OTG_PARAM_TEST(val, 8, 8) &&
+           DWC_OTG_PARAM_TEST(val, 16, 16) &&
+           DWC_OTG_PARAM_TEST(val, 32, 32) &&
+           DWC_OTG_PARAM_TEST(val, 64, 64) &&
+           DWC_OTG_PARAM_TEST(val, 128, 128) &&
+           DWC_OTG_PARAM_TEST(val, 256, 256)) {
+               DWC_WARN("`%d' invalid for parameter `dma_burst_size'\n", val);
+               return -DWC_E_INVALID;
+       }
+       core_if->core_params->dma_burst_size = val;
+       return 0;
+}
+
+int32_t dwc_otg_get_param_dma_burst_size(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dma_burst_size;
+}
+
+int dwc_otg_set_param_pti_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `pti_enable'\n", val);
+               return -DWC_E_INVALID;
+       }
+       if (val && (core_if->snpsid < OTG_CORE_REV_2_72a)) {
+               if (dwc_otg_param_initialized(core_if->core_params->pti_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter pti_enable. Check HW configuration.\n",
+                            val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->pti_enable = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_pti_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->pti_enable;
+}
+
+int dwc_otg_set_param_mpi_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `mpi_enable'\n", val);
+               return -DWC_E_INVALID;
+       }
+       if (val && (core_if->hwcfg2.b.multi_proc_int == 0)) {
+               if (dwc_otg_param_initialized(core_if->core_params->mpi_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter mpi_enable. Check HW configuration.\n",
+                            val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->mpi_enable = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_mpi_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->mpi_enable;
+}
+
+int dwc_otg_set_param_adp_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `adp_enable'\n", val);
+               return -DWC_E_INVALID;
+       }
+       if (val && (core_if->hwcfg3.b.adp_supp == 0)) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->adp_supp_enable)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter adp_enable. Check HW configuration.\n",
+                            val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->adp_supp_enable = val;
+       /*Set OTG version 2.0 in case of enabling ADP*/
+       if (val)
+               dwc_otg_set_param_otg_ver(core_if, 1);
+
+       return retval;
+}
+
+int32_t dwc_otg_get_param_adp_enable(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->adp_supp_enable;
+}
+
+int dwc_otg_set_param_ic_usb_cap(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `ic_usb_cap'\n", val);
+               DWC_WARN("ic_usb_cap must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val && (core_if->hwcfg2.b.otg_enable_ic_usb == 0)) {
+               if (dwc_otg_param_initialized(core_if->core_params->ic_usb_cap)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter ic_usb_cap. Check HW configuration.\n",
+                            val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->ic_usb_cap = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_ic_usb_cap(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->ic_usb_cap;
+}
+
+int dwc_otg_set_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 1;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 3)) {
+               DWC_WARN("`%d' invalid for parameter `ahb_thr_ratio'\n", val);
+               DWC_WARN("ahb_thr_ratio must be 0 - 3\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (val
+           && (core_if->snpsid < OTG_CORE_REV_2_81a
+               || !dwc_otg_get_param_thr_ctl(core_if))) {
+               valid = 0;
+       } else if (val
+                  && ((dwc_otg_get_param_tx_thr_length(core_if) / (1 << val)) <
+                      4)) {
+               valid = 0;
+       }
+       if (valid == 0) {
+               if (dwc_otg_param_initialized
+                   (core_if->core_params->ahb_thr_ratio)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter ahb_thr_ratio. Check HW configuration.\n",
+                            val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+
+       core_if->core_params->ahb_thr_ratio = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->ahb_thr_ratio;
+}
+
+int dwc_otg_set_param_power_down(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 1;
+       hwcfg4_data_t hwcfg4 = {.d32 = 0 };
+       hwcfg4.d32 = DWC_READ_REG32(&core_if->core_global_regs->ghwcfg4);
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 3)) {
+               DWC_WARN("`%d' invalid for parameter `power_down'\n", val);
+               DWC_WARN("power_down must be 0 - 2\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 2) && (core_if->snpsid < OTG_CORE_REV_2_91a)) {
+               valid = 0;
+       }
+       if ((val == 3)
+           && ((core_if->snpsid < OTG_CORE_REV_3_00a)
+               || (hwcfg4.b.xhiber == 0))) {
+               valid = 0;
+       }
+       if (valid == 0) {
+               if (dwc_otg_param_initialized(core_if->core_params->power_down)) {
+                       DWC_ERROR
+                           ("%d invalid for parameter power_down. Check HW configuration.\n",
+                            val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->power_down = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_power_down(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->power_down;
+}
+
+int dwc_otg_set_param_reload_ctl(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 1;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `reload_ctl'\n", val);
+               DWC_WARN("reload_ctl must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1) && (core_if->snpsid < OTG_CORE_REV_2_92a)) {
+               valid = 0;
+       }
+       if (valid == 0) {
+               if (dwc_otg_param_initialized(core_if->core_params->reload_ctl)) {
+                       DWC_ERROR("%d invalid for parameter reload_ctl."
+                                 "Check HW configuration.\n", val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->reload_ctl = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_reload_ctl(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->reload_ctl;
+}
+
+int dwc_otg_set_param_dev_out_nak(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 1;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `dev_out_nak'\n", val);
+               DWC_WARN("dev_out_nak must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1) && ((core_if->snpsid < OTG_CORE_REV_2_93a) ||
+               !(core_if->core_params->dma_desc_enable))) {
+               valid = 0;
+       }
+       if (valid == 0) {
+               if (dwc_otg_param_initialized(core_if->core_params->dev_out_nak)) {
+                       DWC_ERROR("%d invalid for parameter dev_out_nak."
+                               "Check HW configuration.\n", val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->dev_out_nak = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_dev_out_nak(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->dev_out_nak;
+}
+
+int dwc_otg_set_param_cont_on_bna(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 1;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `cont_on_bna'\n", val);
+               DWC_WARN("cont_on_bna must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1) && ((core_if->snpsid < OTG_CORE_REV_2_94a) ||
+               !(core_if->core_params->dma_desc_enable))) {
+                       valid = 0;
+       }
+       if (valid == 0) {
+               if (dwc_otg_param_initialized(core_if->core_params->cont_on_bna)) {
+                       DWC_ERROR("%d invalid for parameter cont_on_bna."
+                               "Check HW configuration.\n", val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->cont_on_bna = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_cont_on_bna(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->cont_on_bna;
+}
+
+int dwc_otg_set_param_ahb_single(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+       int valid = 1;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `ahb_single'\n", val);
+               DWC_WARN("ahb_single must be 0 or 1\n");
+               return -DWC_E_INVALID;
+       }
+
+       if ((val == 1) && (core_if->snpsid < OTG_CORE_REV_2_94a)) {
+                       valid = 0;
+       }
+       if (valid == 0) {
+               if (dwc_otg_param_initialized(core_if->core_params->ahb_single)) {
+                       DWC_ERROR("%d invalid for parameter ahb_single."
+                               "Check HW configuration.\n", val);
+               }
+               retval = -DWC_E_INVALID;
+               val = 0;
+       }
+       core_if->core_params->ahb_single = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_ahb_single(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->ahb_single;
+}
+
+int dwc_otg_set_param_otg_ver(dwc_otg_core_if_t * core_if, int32_t val)
+{
+       int retval = 0;
+
+       if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+               DWC_WARN("`%d' invalid for parameter `otg_ver'\n", val);
+               DWC_WARN
+                   ("otg_ver must be 0(for OTG 1.3 support) or 1(for OTG 2.0 support)\n");
+               return -DWC_E_INVALID;
+       }
+
+       core_if->core_params->otg_ver = val;
+       return retval;
+}
+
+int32_t dwc_otg_get_param_otg_ver(dwc_otg_core_if_t * core_if)
+{
+       return core_if->core_params->otg_ver;
+}
+
+uint32_t dwc_otg_get_hnpstatus(dwc_otg_core_if_t * core_if)
+{
+       gotgctl_data_t otgctl;
+       otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+       return otgctl.b.hstnegscs;
+}
+
+uint32_t dwc_otg_get_srpstatus(dwc_otg_core_if_t * core_if)
+{
+       gotgctl_data_t otgctl;
+       otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+       return otgctl.b.sesreqscs;
+}
+
+void dwc_otg_set_hnpreq(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       if(core_if->otg_ver == 0) {
+               gotgctl_data_t otgctl;
+               otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+               otgctl.b.hnpreq = val;
+               DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, otgctl.d32);
+       } else {
+               core_if->otg_sts = val;
+       }
+}
+
+uint32_t dwc_otg_get_gsnpsid(dwc_otg_core_if_t * core_if)
+{
+       return core_if->snpsid;
+}
+
+uint32_t dwc_otg_get_mode(dwc_otg_core_if_t * core_if)
+{
+       gintsts_data_t gintsts;
+       gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+       return gintsts.b.curmode;
+}
+
+uint32_t dwc_otg_get_hnpcapable(dwc_otg_core_if_t * core_if)
+{
+       gusbcfg_data_t usbcfg;
+       usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       return usbcfg.b.hnpcap;
+}
+
+void dwc_otg_set_hnpcapable(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       gusbcfg_data_t usbcfg;
+       usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       usbcfg.b.hnpcap = val;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, usbcfg.d32);
+}
+
+uint32_t dwc_otg_get_srpcapable(dwc_otg_core_if_t * core_if)
+{
+       gusbcfg_data_t usbcfg;
+       usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       return usbcfg.b.srpcap;
+}
+
+void dwc_otg_set_srpcapable(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       gusbcfg_data_t usbcfg;
+       usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       usbcfg.b.srpcap = val;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, usbcfg.d32);
+}
+
+uint32_t dwc_otg_get_devspeed(dwc_otg_core_if_t * core_if)
+{
+       dcfg_data_t dcfg;
+       /* originally: dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg); */
+
+        dcfg.d32 = -1; //GRAYG 
+        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)\n", __func__, core_if);
+        if (NULL == core_if)
+                DWC_ERROR("reg request with NULL core_if\n");
+        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)->dev_if(%p)\n", __func__,
+                    core_if, core_if->dev_if);
+        if (NULL == core_if->dev_if)
+                DWC_ERROR("reg request with NULL dev_if\n");
+        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)->dev_if(%p)->"
+                    "dev_global_regs(%p)\n", __func__,
+                    core_if, core_if->dev_if,
+                    core_if->dev_if->dev_global_regs);
+        if (NULL == core_if->dev_if->dev_global_regs)
+                DWC_ERROR("reg request with NULL dev_global_regs\n");
+        else {
+                DWC_DEBUGPL(DBG_CILV, "%s - &core_if(%p)->dev_if(%p)->"
+                            "dev_global_regs(%p)->dcfg = %p\n", __func__,
+                            core_if, core_if->dev_if,
+                            core_if->dev_if->dev_global_regs,
+                            &core_if->dev_if->dev_global_regs->dcfg);
+               dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+        }
+       return dcfg.b.devspd;
+}
+
+void dwc_otg_set_devspeed(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       dcfg_data_t dcfg;
+       dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+       dcfg.b.devspd = val;
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+}
+
+uint32_t dwc_otg_get_busconnected(dwc_otg_core_if_t * core_if)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+       return hprt0.b.prtconnsts;
+}
+
+uint32_t dwc_otg_get_enumspeed(dwc_otg_core_if_t * core_if)
+{
+       dsts_data_t dsts;
+       dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+       return dsts.b.enumspd;
+}
+
+uint32_t dwc_otg_get_prtpower(dwc_otg_core_if_t * core_if)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+       return hprt0.b.prtpwr;
+
+}
+
+uint32_t dwc_otg_get_core_state(dwc_otg_core_if_t * core_if)
+{
+       return core_if->hibernation_suspend;
+}
+
+void dwc_otg_set_prtpower(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       hprt0.b.prtpwr = val;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+}
+
+uint32_t dwc_otg_get_prtsuspend(dwc_otg_core_if_t * core_if)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+       return hprt0.b.prtsusp;
+
+}
+
+void dwc_otg_set_prtsuspend(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       hprt0.b.prtsusp = val;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+}
+
+uint32_t dwc_otg_get_fr_interval(dwc_otg_core_if_t * core_if)
+{
+       hfir_data_t hfir;
+       hfir.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
+       return hfir.b.frint;
+
+}
+
+void dwc_otg_set_fr_interval(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       hfir_data_t hfir;
+       uint32_t fram_int;
+       fram_int = calc_frame_interval(core_if);
+       hfir.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
+       if (!core_if->core_params->reload_ctl) {
+               DWC_WARN("\nCannot reload HFIR register.HFIR.HFIRRldCtrl bit is"
+                        "not set to 1.\nShould load driver with reload_ctl=1"
+                        " module parameter\n");
+               return;
+       }
+       switch (fram_int) {
+       case 3750:
+               if ((val < 3350) || (val > 4150)) {
+                       DWC_WARN("HFIR interval for HS core and 30 MHz"
+                                "clock freq should be from 3350 to 4150\n");
+                       return;
+               }
+               break;
+       case 30000:
+               if ((val < 26820) || (val > 33180)) {
+                       DWC_WARN("HFIR interval for FS/LS core and 30 MHz"
+                                "clock freq should be from 26820 to 33180\n");
+                       return;
+               }
+               break;
+       case 6000:
+               if ((val < 5360) || (val > 6640)) {
+                       DWC_WARN("HFIR interval for HS core and 48 MHz"
+                                "clock freq should be from 5360 to 6640\n");
+                       return;
+               }
+               break;
+       case 48000:
+               if ((val < 42912) || (val > 53088)) {
+                       DWC_WARN("HFIR interval for FS/LS core and 48 MHz"
+                                "clock freq should be from 42912 to 53088\n");
+                       return;
+               }
+               break;
+       case 7500:
+               if ((val < 6700) || (val > 8300)) {
+                       DWC_WARN("HFIR interval for HS core and 60 MHz"
+                                "clock freq should be from 6700 to 8300\n");
+                       return;
+               }
+               break;
+       case 60000:
+               if ((val < 53640) || (val > 65536)) {
+                       DWC_WARN("HFIR interval for FS/LS core and 60 MHz"
+                                "clock freq should be from 53640 to 65536\n");
+                       return;
+               }
+               break;
+       default:
+               DWC_WARN("Unknown frame interval\n");
+               return;
+               break;
+
+       }
+       hfir.b.frint = val;
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hfir, hfir.d32);
+}
+
+uint32_t dwc_otg_get_mode_ch_tim(dwc_otg_core_if_t * core_if)
+{
+       hcfg_data_t hcfg;
+       hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+       return hcfg.b.modechtimen;
+
+}
+
+void dwc_otg_set_mode_ch_tim(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       hcfg_data_t hcfg;
+       hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+       hcfg.b.modechtimen = val;
+       DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+void dwc_otg_set_prtresume(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       hprt0.b.prtres = val;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+}
+
+uint32_t dwc_otg_get_remotewakesig(dwc_otg_core_if_t * core_if)
+{
+       dctl_data_t dctl;
+       dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+       return dctl.b.rmtwkupsig;
+}
+
+uint32_t dwc_otg_get_lpm_portsleepstatus(dwc_otg_core_if_t * core_if)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+
+       DWC_ASSERT(!
+                  ((core_if->lx_state == DWC_OTG_L1) ^ lpmcfg.b.prt_sleep_sts),
+                  "lx_state = %d, lmpcfg.prt_sleep_sts = %d\n",
+                  core_if->lx_state, lpmcfg.b.prt_sleep_sts);
+
+       return lpmcfg.b.prt_sleep_sts;
+}
+
+uint32_t dwc_otg_get_lpm_remotewakeenabled(dwc_otg_core_if_t * core_if)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       return lpmcfg.b.rem_wkup_en;
+}
+
+uint32_t dwc_otg_get_lpmresponse(dwc_otg_core_if_t * core_if)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       return lpmcfg.b.appl_resp;
+}
+
+void dwc_otg_set_lpmresponse(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       lpmcfg.b.appl_resp = val;
+       DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+}
+
+uint32_t dwc_otg_get_hsic_connect(dwc_otg_core_if_t * core_if)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       return lpmcfg.b.hsic_connect;
+}
+
+void dwc_otg_set_hsic_connect(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       lpmcfg.b.hsic_connect = val;
+       DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+}
+
+uint32_t dwc_otg_get_inv_sel_hsic(dwc_otg_core_if_t * core_if)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       return lpmcfg.b.inv_sel_hsic;
+
+}
+
+void dwc_otg_set_inv_sel_hsic(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       glpmcfg_data_t lpmcfg;
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       lpmcfg.b.inv_sel_hsic = val;
+       DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+}
+
+uint32_t dwc_otg_get_gotgctl(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+}
+
+void dwc_otg_set_gotgctl(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, val);
+}
+
+uint32_t dwc_otg_get_gusbcfg(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+}
+
+void dwc_otg_set_gusbcfg(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, val);
+}
+
+uint32_t dwc_otg_get_grxfsiz(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+}
+
+void dwc_otg_set_grxfsiz(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->grxfsiz, val);
+}
+
+uint32_t dwc_otg_get_gnptxfsiz(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz);
+}
+
+void dwc_otg_set_gnptxfsiz(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->gnptxfsiz, val);
+}
+
+uint32_t dwc_otg_get_gpvndctl(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->gpvndctl);
+}
+
+void dwc_otg_set_gpvndctl(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->gpvndctl, val);
+}
+
+uint32_t dwc_otg_get_ggpio(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->ggpio);
+}
+
+void dwc_otg_set_ggpio(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, val);
+}
+
+uint32_t dwc_otg_get_hprt0(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(core_if->host_if->hprt0);
+
+}
+
+void dwc_otg_set_hprt0(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(core_if->host_if->hprt0, val);
+}
+
+uint32_t dwc_otg_get_guid(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->guid);
+}
+
+void dwc_otg_set_guid(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+       DWC_WRITE_REG32(&core_if->core_global_regs->guid, val);
+}
+
+uint32_t dwc_otg_get_hptxfsiz(dwc_otg_core_if_t * core_if)
+{
+       return DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
+}
+
+uint16_t dwc_otg_get_otg_version(dwc_otg_core_if_t * core_if)
+{
+       return ((core_if->otg_ver == 1) ? (uint16_t)0x0200 : (uint16_t)0x0103);
+}
+
+/**
+ * Start the SRP timer to detect when the SRP does not complete within
+ * 6 seconds.
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+void dwc_otg_pcd_start_srp_timer(dwc_otg_core_if_t * core_if)
+{
+       core_if->srp_timer_started = 1;
+       DWC_TIMER_SCHEDULE(core_if->srp_timer, 6000 /* 6 secs */ );
+}
+
+void dwc_otg_initiate_srp(dwc_otg_core_if_t * core_if)
+{
+       uint32_t *addr = (uint32_t *) & (core_if->core_global_regs->gotgctl);
+       gotgctl_data_t mem;
+       gotgctl_data_t val;
+
+       val.d32 = DWC_READ_REG32(addr);
+       if (val.b.sesreq) {
+               DWC_ERROR("Session Request Already active!\n");
+               return;
+       }
+
+       DWC_INFO("Session Request Initated\n"); //NOTICE
+       mem.d32 = DWC_READ_REG32(addr);
+       mem.b.sesreq = 1;
+       DWC_WRITE_REG32(addr, mem.d32);
+
+       /* Start the SRP timer */
+       dwc_otg_pcd_start_srp_timer(core_if);
+       return;
+}
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_cil.h b/drivers/usb/host/dwc_otg/dwc_otg_cil.h
new file mode 100644
index 0000000..d367cd1
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_cil.h
@@ -0,0 +1,1464 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.h $
+ * $Revision: #123 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_CIL_H__)
+#define __DWC_CIL_H__
+
+#include "dwc_list.h"
+#include "dwc_otg_dbg.h"
+#include "dwc_otg_regs.h"
+
+#include "dwc_otg_core_if.h"
+#include "dwc_otg_adp.h"
+
+/**
+ * @file
+ * This file contains the interface to the Core Interface Layer.
+ */
+
+#ifdef DWC_UTE_CFI
+
+#define MAX_DMA_DESCS_PER_EP   256
+
+/**
+ * Enumeration for the data buffer mode
+ */
+typedef enum _data_buffer_mode {
+       BM_STANDARD = 0,        /* data buffer is in normal mode */
+       BM_SG = 1,              /* data buffer uses the scatter/gather mode */
+       BM_CONCAT = 2,          /* data buffer uses the concatenation mode */
+       BM_CIRCULAR = 3,        /* data buffer uses the circular DMA mode */
+       BM_ALIGN = 4            /* data buffer is in buffer alignment mode */
+} data_buffer_mode_e;
+#endif //DWC_UTE_CFI
+
+/** Macros defined for DWC OTG HW Release version */
+
+#define OTG_CORE_REV_2_60a     0x4F54260A
+#define OTG_CORE_REV_2_71a     0x4F54271A
+#define OTG_CORE_REV_2_72a     0x4F54272A
+#define OTG_CORE_REV_2_80a     0x4F54280A
+#define OTG_CORE_REV_2_81a     0x4F54281A
+#define OTG_CORE_REV_2_90a     0x4F54290A
+#define OTG_CORE_REV_2_91a     0x4F54291A
+#define OTG_CORE_REV_2_92a     0x4F54292A
+#define OTG_CORE_REV_2_93a     0x4F54293A
+#define OTG_CORE_REV_2_94a     0x4F54294A
+#define OTG_CORE_REV_3_00a     0x4F54300A
+
+/**
+ * Information for each ISOC packet.
+ */
+typedef struct iso_pkt_info {
+       uint32_t offset;
+       uint32_t length;
+       int32_t status;
+} iso_pkt_info_t;
+
+/**
+ * The <code>dwc_ep</code> structure represents the state of a single
+ * endpoint when acting in device mode. It contains the data items
+ * needed for an endpoint to be activated and transfer packets.
+ */
+typedef struct dwc_ep {
+       /** EP number used for register address lookup */
+       uint8_t num;
+       /** EP direction 0 = OUT */
+       unsigned is_in:1;
+       /** EP active. */
+       unsigned active:1;
+
+       /**
+        * Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic 
+        * Tx FIFO. If dedicated Tx FIFOs are enabled Tx FIFO # FOR IN EPs*/
+       unsigned tx_fifo_num:4;
+       /** EP type: 0 - Control, 1 - ISOC,      2 - BULK,      3 - INTR */
+       unsigned type:2;
+#define DWC_OTG_EP_TYPE_CONTROL           0
+#define DWC_OTG_EP_TYPE_ISOC      1
+#define DWC_OTG_EP_TYPE_BULK      2
+#define DWC_OTG_EP_TYPE_INTR      3
+
+       /** DATA start PID for INTR and BULK EP */
+       unsigned data_pid_start:1;
+       /** Frame (even/odd) for ISOC EP */
+       unsigned even_odd_frame:1;
+       /** Max Packet bytes */
+       unsigned maxpacket:11;
+
+       /** Max Transfer size */
+       uint32_t maxxfer;
+
+       /** @name Transfer state */
+       /** @{ */
+
+       /**
+        * Pointer to the beginning of the transfer buffer -- do not modify
+        * during transfer.
+        */
+
+       dwc_dma_t dma_addr;
+
+       dwc_dma_t dma_desc_addr;
+       dwc_otg_dev_dma_desc_t *desc_addr;
+
+       uint8_t *start_xfer_buff;
+       /** pointer to the transfer buffer */
+       uint8_t *xfer_buff;
+       /** Number of bytes to transfer */
+       unsigned xfer_len:19;
+       /** Number of bytes transferred. */
+       unsigned xfer_count:19;
+       /** Sent ZLP */
+       unsigned sent_zlp:1;
+       /** Total len for control transfer */
+       unsigned total_len:19;
+
+       /** stall clear flag */
+       unsigned stall_clear_flag:1;
+
+       /** SETUP pkt cnt rollover flag for EP0 out*/
+       unsigned stp_rollover;
+
+#ifdef DWC_UTE_CFI
+       /* The buffer mode */
+       data_buffer_mode_e buff_mode;
+
+       /* The chain of DMA descriptors.
+        * MAX_DMA_DESCS_PER_EP will be allocated for each active EP.
+        */
+       dwc_otg_dma_desc_t *descs;
+
+       /* The DMA address of the descriptors chain start */
+       dma_addr_t descs_dma_addr;
+       /** This variable stores the length of the last enqueued request */
+       uint32_t cfi_req_len;
+#endif                         //DWC_UTE_CFI
+
+/** Max DMA Descriptor count for any EP */
+#define MAX_DMA_DESC_CNT 256
+       /** Allocated DMA Desc count */
+       uint32_t desc_cnt;
+       
+       /** bInterval */
+       uint32_t bInterval;
+       /** Next frame num to setup next ISOC transfer */
+       uint32_t frame_num;
+       /** Indicates SOF number overrun in DSTS */
+       uint8_t frm_overrun;
+
+#ifdef DWC_UTE_PER_IO
+       /** Next frame num for which will be setup DMA Desc */
+       uint32_t xiso_frame_num;
+       /** bInterval */
+       uint32_t xiso_bInterval;
+       /** Count of currently active transfers - shall be either 0 or 1 */
+       int xiso_active_xfers;
+       int xiso_queued_xfers;
+#endif
+#ifdef DWC_EN_ISOC
+       /**
+        * Variables specific for ISOC EPs
+        *
+        */
+       /** DMA addresses of ISOC buffers */
+       dwc_dma_t dma_addr0;
+       dwc_dma_t dma_addr1;
+
+       dwc_dma_t iso_dma_desc_addr;
+       dwc_otg_dev_dma_desc_t *iso_desc_addr;
+
+       /** pointer to the transfer buffers */
+       uint8_t *xfer_buff0;
+       uint8_t *xfer_buff1;
+
+       /** number of ISOC Buffer is processing */
+       uint32_t proc_buf_num;
+       /** Interval of ISOC Buffer processing */
+       uint32_t buf_proc_intrvl;
+       /** Data size for regular frame */
+       uint32_t data_per_frame;
+
+       /* todo - pattern data support is to be implemented in the future */
+       /** Data size for pattern frame */
+       uint32_t data_pattern_frame;
+       /** Frame number of pattern data */
+       uint32_t sync_frame;
+
+       /** bInterval */
+       uint32_t bInterval;
+       /** ISO Packet number per frame */
+       uint32_t pkt_per_frm;
+       /** Next frame num for which will be setup DMA Desc */
+       uint32_t next_frame;
+       /** Number of packets per buffer processing */
+       uint32_t pkt_cnt;
+       /** Info for all isoc packets */
+       iso_pkt_info_t *pkt_info;
+       /** current pkt number */
+       uint32_t cur_pkt;
+       /** current pkt number */
+       uint8_t *cur_pkt_addr;
+       /** current pkt number */
+       uint32_t cur_pkt_dma_addr;
+#endif                         /* DWC_EN_ISOC */
+
+/** @} */
+} dwc_ep_t;
+
+/*
+ * Reasons for halting a host channel.
+ */
+typedef enum dwc_otg_halt_status {
+       DWC_OTG_HC_XFER_NO_HALT_STATUS,
+       DWC_OTG_HC_XFER_COMPLETE,
+       DWC_OTG_HC_XFER_URB_COMPLETE,
+       DWC_OTG_HC_XFER_ACK,
+       DWC_OTG_HC_XFER_NAK,
+       DWC_OTG_HC_XFER_NYET,
+       DWC_OTG_HC_XFER_STALL,
+       DWC_OTG_HC_XFER_XACT_ERR,
+       DWC_OTG_HC_XFER_FRAME_OVERRUN,
+       DWC_OTG_HC_XFER_BABBLE_ERR,
+       DWC_OTG_HC_XFER_DATA_TOGGLE_ERR,
+       DWC_OTG_HC_XFER_AHB_ERR,
+       DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE,
+       DWC_OTG_HC_XFER_URB_DEQUEUE
+} dwc_otg_halt_status_e;
+
+/**
+ * Host channel descriptor. This structure represents the state of a single
+ * host channel when acting in host mode. It contains the data items needed to
+ * transfer packets to an endpoint via a host channel.
+ */
+typedef struct dwc_hc {
+       /** Host channel number used for register address lookup */
+       uint8_t hc_num;
+
+       /** Device to access */
+       unsigned dev_addr:7;
+
+       /** EP to access */
+       unsigned ep_num:4;
+
+       /** EP direction. 0: OUT, 1: IN */
+       unsigned ep_is_in:1;
+
+       /**
+        * EP speed.
+        * One of the following values:
+        *      - DWC_OTG_EP_SPEED_LOW
+        *      - DWC_OTG_EP_SPEED_FULL
+        *      - DWC_OTG_EP_SPEED_HIGH
+        */
+       unsigned speed:2;
+#define DWC_OTG_EP_SPEED_LOW   0
+#define DWC_OTG_EP_SPEED_FULL  1
+#define DWC_OTG_EP_SPEED_HIGH  2
+
+       /**
+        * Endpoint type.
+        * One of the following values:
+        *      - DWC_OTG_EP_TYPE_CONTROL: 0
+        *      - DWC_OTG_EP_TYPE_ISOC: 1
+        *      - DWC_OTG_EP_TYPE_BULK: 2
+        *      - DWC_OTG_EP_TYPE_INTR: 3
+        */
+       unsigned ep_type:2;
+
+       /** Max packet size in bytes */
+       unsigned max_packet:11;
+
+       /**
+        * PID for initial transaction.
+        * 0: DATA0,<br>
+        * 1: DATA2,<br>
+        * 2: DATA1,<br>
+        * 3: MDATA (non-Control EP),
+        *        SETUP (Control EP)
+        */
+       unsigned data_pid_start:2;
+#define DWC_OTG_HC_PID_DATA0 0
+#define DWC_OTG_HC_PID_DATA2 1
+#define DWC_OTG_HC_PID_DATA1 2
+#define DWC_OTG_HC_PID_MDATA 3
+#define DWC_OTG_HC_PID_SETUP 3
+
+       /** Number of periodic transactions per (micro)frame */
+       unsigned multi_count:2;
+
+       /** @name Transfer State */
+       /** @{ */
+
+       /** Pointer to the current transfer buffer position. */
+       uint8_t *xfer_buff;
+       /**
+        * In Buffer DMA mode this buffer will be used
+        * if xfer_buff is not DWORD aligned.
+        */
+       dwc_dma_t align_buff;
+       /** Total number of bytes to transfer. */
+       uint32_t xfer_len;
+       /** Number of bytes transferred so far. */
+       uint32_t xfer_count;
+       /** Packet count at start of transfer.*/
+       uint16_t start_pkt_count;
+
+       /**
+        * Flag to indicate whether the transfer has been started. Set to 1 if
+        * it has been started, 0 otherwise.
+        */
+       uint8_t xfer_started;
+
+       /**
+        * Set to 1 to indicate that a PING request should be issued on this
+        * channel. If 0, process normally.
+        */
+       uint8_t do_ping;
+
+       /**
+        * Set to 1 to indicate that the error count for this transaction is
+        * non-zero. Set to 0 if the error count is 0.
+        */
+       uint8_t error_state;
+
+       /**
+        * Set to 1 to indicate that this channel should be halted the next
+        * time a request is queued for the channel. This is necessary in
+        * slave mode if no request queue space is available when an attempt
+        * is made to halt the channel.
+        */
+       uint8_t halt_on_queue;
+
+       /**
+        * Set to 1 if the host channel has been halted, but the core is not
+        * finished flushing queued requests. Otherwise 0.
+        */
+       uint8_t halt_pending;
+
+       /**
+        * Reason for halting the host channel.
+        */
+       dwc_otg_halt_status_e halt_status;
+
+       /*
+        * Split settings for the host channel
+        */
+       uint8_t do_split;                  /**< Enable split for the channel */
+       uint8_t complete_split;    /**< Enable complete split */
+       uint8_t hub_addr;                  /**< Address of high speed hub */
+
+       uint8_t port_addr;                 /**< Port of the low/full speed device */
+       /** Split transaction position
+        * One of the following values:
+        *        - DWC_HCSPLIT_XACTPOS_MID
+        *        - DWC_HCSPLIT_XACTPOS_BEGIN
+        *        - DWC_HCSPLIT_XACTPOS_END
+        *        - DWC_HCSPLIT_XACTPOS_ALL */
+       uint8_t xact_pos;
+
+       /** Set when the host channel does a short read. */
+       uint8_t short_read;
+
+       /**
+        * Number of requests issued for this channel since it was assigned to
+        * the current transfer (not counting PINGs).
+        */
+       uint8_t requests;
+
+       /**
+        * Queue Head for the transfer being processed by this channel.
+        */
+       struct dwc_otg_qh *qh;
+
+       /** @} */
+
+       /** Entry in list of host channels. */
+        DWC_CIRCLEQ_ENTRY(dwc_hc) hc_list_entry;
+
+       /** @name Descriptor DMA support */
+       /** @{ */
+
+       /** Number of Transfer Descriptors */
+       uint16_t ntd;
+
+       /** Descriptor List DMA address */
+       dwc_dma_t desc_list_addr;
+
+       /** Scheduling micro-frame bitmap. */
+       uint8_t schinfo;
+
+       /** @} */
+} dwc_hc_t;
+
+/**
+ * The following parameters may be specified when starting the module. These
+ * parameters define how the DWC_otg controller should be configured.
+ */
+typedef struct dwc_otg_core_params {
+       int32_t opt;
+
+       /**
+        * Specifies the OTG capabilities. The driver will automatically
+        * detect the value for this parameter if none is specified.
+        * 0 - HNP and SRP capable (default)
+        * 1 - SRP Only capable
+        * 2 - No HNP/SRP capable
+        */
+       int32_t otg_cap;
+
+       /**
+        * Specifies whether to use slave or DMA mode for accessing the data
+        * FIFOs. The driver will automatically detect the value for this
+        * parameter if none is specified.
+        * 0 - Slave
+        * 1 - DMA (default, if available)
+        */
+       int32_t dma_enable;
+
+       /**
+        * When DMA mode is enabled specifies whether to use address DMA or DMA 
+        * Descriptor mode for accessing the data FIFOs in device mode. The driver 
+        * will automatically detect the value for this if none is specified.
+        * 0 - address DMA
+        * 1 - DMA Descriptor(default, if available)
+        */
+       int32_t dma_desc_enable;
+       /** The DMA Burst size (applicable only for External DMA
+        * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+        */
+       int32_t dma_burst_size; /* Translate this to GAHBCFG values */
+
+       /**
+        * Specifies the maximum speed of operation in host and device mode.
+        * The actual speed depends on the speed of the attached device and
+        * the value of phy_type. The actual speed depends on the speed of the
+        * attached device.
+        * 0 - High Speed (default)
+        * 1 - Full Speed
+        */
+       int32_t speed;
+       /** Specifies whether low power mode is supported when attached
+        *      to a Full Speed or Low Speed device in host mode.
+        * 0 - Don't support low power mode (default)
+        * 1 - Support low power mode
+        */
+       int32_t host_support_fs_ls_low_power;
+
+       /** Specifies the PHY clock rate in low power mode when connected to a
+        * Low Speed device in host mode. This parameter is applicable only if
+        * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
+        * then defaults to 6 MHZ otherwise 48 MHZ.
+        *
+        * 0 - 48 MHz
+        * 1 - 6 MHz
+        */
+       int32_t host_ls_low_power_phy_clk;
+
+       /**
+        * 0 - Use cC FIFO size parameters
+        * 1 - Allow dynamic FIFO sizing (default)
+        */
+       int32_t enable_dynamic_fifo;
+
+       /** Total number of 4-byte words in the data FIFO memory. This
+        * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
+        * Tx FIFOs.
+        * 32 to 32768 (default 8192)
+        * Note: The total FIFO memory depth in the FPGA configuration is 8192.
+        */
+       int32_t data_fifo_size;
+
+       /** Number of 4-byte words in the Rx FIFO in device mode when dynamic
+        * FIFO sizing is enabled.
+        * 16 to 32768 (default 1064)
+        */
+       int32_t dev_rx_fifo_size;
+
+       /** Number of 4-byte words in the non-periodic Tx FIFO in device mode
+        * when dynamic FIFO sizing is enabled.
+        * 16 to 32768 (default 1024)
+        */
+       int32_t dev_nperio_tx_fifo_size;
+
+       /** Number of 4-byte words in each of the periodic Tx FIFOs in device
+        * mode when dynamic FIFO sizing is enabled.
+        * 4 to 768 (default 256)
+        */
+       uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+       /** Number of 4-byte words in the Rx FIFO in host mode when dynamic
+        * FIFO sizing is enabled.
+        * 16 to 32768 (default 1024)
+        */
+       int32_t host_rx_fifo_size;
+
+       /** Number of 4-byte words in the non-periodic Tx FIFO in host mode
+        * when Dynamic FIFO sizing is enabled in the core.
+        * 16 to 32768 (default 1024)
+        */
+       int32_t host_nperio_tx_fifo_size;
+
+       /** Number of 4-byte words in the host periodic Tx FIFO when dynamic
+        * FIFO sizing is enabled.
+        * 16 to 32768 (default 1024)
+        */
+       int32_t host_perio_tx_fifo_size;
+
+       /** The maximum transfer size supported in bytes.
+        * 2047 to 65,535  (default 65,535)
+        */
+       int32_t max_transfer_size;
+
+       /** The maximum number of packets in a transfer.
+        * 15 to 511  (default 511)
+        */
+       int32_t max_packet_count;
+
+       /** The number of host channel registers to use.
+        * 1 to 16 (default 12)
+        * Note: The FPGA configuration supports a maximum of 12 host channels.
+        */
+       int32_t host_channels;
+
+       /** The number of endpoints in addition to EP0 available for device
+        * mode operations.
+        * 1 to 15 (default 6 IN and OUT)
+        * Note: The FPGA configuration supports a maximum of 6 IN and OUT
+        * endpoints in addition to EP0.
+        */
+       int32_t dev_endpoints;
+
+               /**
+                * Specifies the type of PHY interface to use. By default, the driver
+                * will automatically detect the phy_type.
+                *
+                * 0 - Full Speed PHY
+                * 1 - UTMI+ (default)
+                * 2 - ULPI
+                */
+       int32_t phy_type;
+
+       /**
+        * Specifies the UTMI+ Data Width. This parameter is
+        * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
+        * PHY_TYPE, this parameter indicates the data width between
+        * the MAC and the ULPI Wrapper.) Also, this parameter is
+        * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
+        * to "8 and 16 bits", meaning that the core has been
+        * configured to work at either data path width.
+        *
+        * 8 or 16 bits (default 16)
+        */
+       int32_t phy_utmi_width;
+
+       /**
+        * Specifies whether the ULPI operates at double or single
+        * data rate. This parameter is only applicable if PHY_TYPE is
+        * ULPI.
+        *
+        * 0 - single data rate ULPI interface with 8 bit wide data
+        * bus (default)
+        * 1 - double data rate ULPI interface with 4 bit wide data
+        * bus
+        */
+       int32_t phy_ulpi_ddr;
+
+       /**
+        * Specifies whether to use the internal or external supply to
+        * drive the vbus with a ULPI phy.
+        */
+       int32_t phy_ulpi_ext_vbus;
+
+       /**
+        * Specifies whether to use the I2Cinterface for full speed PHY. This
+        * parameter is only applicable if PHY_TYPE is FS.
+        * 0 - No (default)
+        * 1 - Yes
+        */
+       int32_t i2c_enable;
+
+       int32_t ulpi_fs_ls;
+
+       int32_t ts_dline;
+
+       /**
+        * Specifies whether dedicated transmit FIFOs are
+        * enabled for non periodic IN endpoints in device mode
+        * 0 - No
+        * 1 - Yes
+        */
+       int32_t en_multiple_tx_fifo;
+
+       /** Number of 4-byte words in each of the Tx FIFOs in device
+        * mode when dynamic FIFO sizing is enabled.
+        * 4 to 768 (default 256)
+        */
+       uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
+
+       /** Thresholding enable flag-
+        * bit 0 - enable non-ISO Tx thresholding
+        * bit 1 - enable ISO Tx thresholding
+        * bit 2 - enable Rx thresholding
+        */
+       uint32_t thr_ctl;
+
+       /** Thresholding length for Tx
+        *      FIFOs in 32 bit DWORDs
+        */
+       uint32_t tx_thr_length;
+
+       /** Thresholding length for Rx
+        *      FIFOs in 32 bit DWORDs
+        */
+       uint32_t rx_thr_length;
+
+       /**
+        * Specifies whether LPM (Link Power Management) support is enabled
+        */
+       int32_t lpm_enable;
+
+       /** Per Transfer Interrupt
+        *      mode enable flag
+        * 1 - Enabled
+        * 0 - Disabled
+        */
+       int32_t pti_enable;
+
+       /** Multi Processor Interrupt
+        *      mode enable flag
+        * 1 - Enabled
+        * 0 - Disabled
+        */
+       int32_t mpi_enable;
+
+       /** IS_USB Capability
+        * 1 - Enabled
+        * 0 - Disabled
+        */
+       int32_t ic_usb_cap;
+
+       /** AHB Threshold Ratio
+        * 2'b00 AHB Threshold =        MAC Threshold
+        * 2'b01 AHB Threshold = 1/2    MAC Threshold
+        * 2'b10 AHB Threshold = 1/4    MAC Threshold
+        * 2'b11 AHB Threshold = 1/8    MAC Threshold
+        */
+       int32_t ahb_thr_ratio;
+
+       /** ADP Support
+        * 1 - Enabled
+        * 0 - Disabled
+        */
+       int32_t adp_supp_enable;
+
+       /** HFIR Reload Control
+        * 0 - The HFIR cannot be reloaded dynamically.
+        * 1 - Allow dynamic reloading of the HFIR register during runtime.
+        */
+       int32_t reload_ctl;
+
+       /** DCFG: Enable device Out NAK 
+        * 0 - The core does not set NAK after Bulk Out transfer complete.
+        * 1 - The core sets NAK after Bulk OUT transfer complete.
+        */
+       int32_t dev_out_nak;
+
+       /** DCFG: Enable Continue on BNA 
+        * After receiving BNA interrupt the core disables the endpoint,when the
+        * endpoint is re-enabled by the application the core starts processing 
+        * 0 - from the DOEPDMA descriptor
+        * 1 - from the descriptor which received the BNA.
+        */
+       int32_t cont_on_bna;
+
+       /** GAHBCFG: AHB Single Support 
+        * This bit when programmed supports SINGLE transfers for remainder 
+        * data in a transfer for DMA mode of operation.
+        * 0 - in this case the remainder data will be sent using INCR burst size.
+        * 1 - in this case the remainder data will be sent using SINGLE burst size.
+        */
+       int32_t ahb_single;
+
+       /** Core Power down mode
+        * 0 - No Power Down is enabled
+        * 1 - Reserved
+        * 2 - Complete Power Down (Hibernation)
+        */
+       int32_t power_down;
+
+       /** OTG revision supported
+        * 0 - OTG 1.3 revision
+        * 1 - OTG 2.0 revision
+        */
+       int32_t otg_ver;
+
+} dwc_otg_core_params_t;
+
+#ifdef DEBUG
+struct dwc_otg_core_if;
+typedef struct hc_xfer_info {
+       struct dwc_otg_core_if *core_if;
+       dwc_hc_t *hc;
+} hc_xfer_info_t;
+#endif
+
+typedef struct ep_xfer_info {
+       struct dwc_otg_core_if *core_if;
+       dwc_ep_t *ep;
+       uint8_t state;
+} ep_xfer_info_t;
+/*
+ * Device States
+ */
+typedef enum dwc_otg_lx_state {
+       /** On state */
+       DWC_OTG_L0,
+       /** LPM sleep state*/
+       DWC_OTG_L1,
+       /** USB suspend state*/
+       DWC_OTG_L2,
+       /** Off state*/
+       DWC_OTG_L3
+} dwc_otg_lx_state_e;
+
+struct dwc_otg_global_regs_backup {
+       uint32_t gotgctl_local;
+       uint32_t gintmsk_local;
+       uint32_t gahbcfg_local;
+       uint32_t gusbcfg_local;
+       uint32_t grxfsiz_local;
+       uint32_t gnptxfsiz_local;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       uint32_t glpmcfg_local;
+#endif
+       uint32_t gi2cctl_local;
+       uint32_t hptxfsiz_local;
+       uint32_t pcgcctl_local;
+       uint32_t gdfifocfg_local;
+       uint32_t dtxfsiz_local[MAX_EPS_CHANNELS];
+       uint32_t gpwrdn_local;
+       uint32_t xhib_pcgcctl;
+       uint32_t xhib_gpwrdn;
+};
+
+struct dwc_otg_host_regs_backup {
+       uint32_t hcfg_local;
+       uint32_t haintmsk_local;
+       uint32_t hcintmsk_local[MAX_EPS_CHANNELS];
+       uint32_t hprt0_local;
+       uint32_t hfir_local;
+};
+
+struct dwc_otg_dev_regs_backup {
+       uint32_t dcfg;
+       uint32_t dctl;
+       uint32_t daintmsk;
+       uint32_t diepmsk;
+       uint32_t doepmsk;
+       uint32_t diepctl[MAX_EPS_CHANNELS];
+       uint32_t dieptsiz[MAX_EPS_CHANNELS];
+       uint32_t diepdma[MAX_EPS_CHANNELS];
+};
+/**
+ * The <code>dwc_otg_core_if</code> structure contains information needed to manage
+ * the DWC_otg controller acting in either host or device mode. It
+ * represents the programming view of the controller as a whole.
+ */
+struct dwc_otg_core_if {
+       /** Parameters that define how the core should be configured.*/
+       dwc_otg_core_params_t *core_params;
+
+       /** Core Global registers starting at offset 000h. */
+       dwc_otg_core_global_regs_t *core_global_regs;
+
+       /** Device-specific information */
+       dwc_otg_dev_if_t *dev_if;
+       /** Host-specific information */
+       dwc_otg_host_if_t *host_if;
+
+       /** Value from SNPSID register */
+       uint32_t snpsid;
+
+       /*
+        * Set to 1 if the core PHY interface bits in USBCFG have been
+        * initialized.
+        */
+       uint8_t phy_init_done;
+
+       /*
+        * SRP Success flag, set by srp success interrupt in FS I2C mode
+        */
+       uint8_t srp_success;
+       uint8_t srp_timer_started;
+       /** Timer for SRP. If it expires before SRP is successful
+        * clear the SRP. */
+       dwc_timer_t *srp_timer;
+
+#ifdef DWC_DEV_SRPCAP
+       /* This timer is needed to power on the hibernated host core if SRP is not
+        * initiated on connected SRP capable device for limited period of time
+        */
+       uint8_t pwron_timer_started;
+       dwc_timer_t *pwron_timer;
+#endif
+       /* Common configuration information */
+       /** Power and Clock Gating Control Register */
+       volatile uint32_t *pcgcctl;
+#define DWC_OTG_PCGCCTL_OFFSET 0xE00
+
+       /** Push/pop addresses for endpoints or host channels.*/
+       uint32_t *data_fifo[MAX_EPS_CHANNELS];
+#define DWC_OTG_DATA_FIFO_OFFSET 0x1000
+#define DWC_OTG_DATA_FIFO_SIZE 0x1000
+
+       /** Total RAM for FIFOs (Bytes) */
+       uint16_t total_fifo_size;
+       /** Size of Rx FIFO (Bytes) */
+       uint16_t rx_fifo_size;
+       /** Size of Non-periodic Tx FIFO (Bytes) */
+       uint16_t nperio_tx_fifo_size;
+
+       /** 1 if DMA is enabled, 0 otherwise. */
+       uint8_t dma_enable;
+
+       /** 1 if DMA descriptor is enabled, 0 otherwise. */
+       uint8_t dma_desc_enable;
+
+       /** 1 if PTI Enhancement mode is enabled, 0 otherwise. */
+       uint8_t pti_enh_enable;
+
+       /** 1 if MPI Enhancement mode is enabled, 0 otherwise. */
+       uint8_t multiproc_int_enable;
+
+       /** 1 if dedicated Tx FIFOs are enabled, 0 otherwise. */
+       uint8_t en_multiple_tx_fifo;
+
+       /** Set to 1 if multiple packets of a high-bandwidth transfer is in
+        * process of being queued */
+       uint8_t queuing_high_bandwidth;
+
+       /** Hardware Configuration -- stored here for convenience.*/
+       hwcfg1_data_t hwcfg1;
+       hwcfg2_data_t hwcfg2;
+       hwcfg3_data_t hwcfg3;
+       hwcfg4_data_t hwcfg4;
+       fifosize_data_t hptxfsiz;
+
+       /** Host and Device Configuration -- stored here for convenience.*/
+       hcfg_data_t hcfg;
+       dcfg_data_t dcfg;
+
+       /** The operational State, during transations
+        * (a_host>>a_peripherial and b_device=>b_host) this may not
+        * match the core but allows the software to determine
+        * transitions.
+        */
+       uint8_t op_state;
+
+       /**
+        * Set to 1 if the HCD needs to be restarted on a session request
+        * interrupt. This is required if no connector ID status change has
+        * occurred since the HCD was last disconnected.
+        */
+       uint8_t restart_hcd_on_session_req;
+
+       /** HCD callbacks */
+       /** A-Device is a_host */
+#define A_HOST         (1)
+       /** A-Device is a_suspend */
+#define A_SUSPEND      (2)
+       /** A-Device is a_peripherial */
+#define A_PERIPHERAL   (3)
+       /** B-Device is operating as a Peripheral. */
+#define B_PERIPHERAL   (4)
+       /** B-Device is operating as a Host. */
+#define B_HOST         (5)
+
+       /** HCD callbacks */
+       struct dwc_otg_cil_callbacks *hcd_cb;
+       /** PCD callbacks */
+       struct dwc_otg_cil_callbacks *pcd_cb;
+
+       /** Device mode Periodic Tx FIFO Mask */
+       uint32_t p_tx_msk;
+       /** Device mode Periodic Tx FIFO Mask */
+       uint32_t tx_msk;
+
+       /** Workqueue object used for handling several interrupts */
+       dwc_workq_t *wq_otg;
+
+       /** Timer object used for handling "Wakeup Detected" Interrupt */
+       dwc_timer_t *wkp_timer;
+       /** This arrays used for debug purposes for DEV OUT NAK enhancement */
+       uint32_t start_doeptsiz_val[MAX_EPS_CHANNELS];
+       ep_xfer_info_t ep_xfer_info[MAX_EPS_CHANNELS];
+       dwc_timer_t *ep_xfer_timer[MAX_EPS_CHANNELS];
+#ifdef DEBUG
+       uint32_t start_hcchar_val[MAX_EPS_CHANNELS];
+
+       hc_xfer_info_t hc_xfer_info[MAX_EPS_CHANNELS];
+       dwc_timer_t *hc_xfer_timer[MAX_EPS_CHANNELS];
+
+       uint32_t hfnum_7_samples;
+       uint64_t hfnum_7_frrem_accum;
+       uint32_t hfnum_0_samples;
+       uint64_t hfnum_0_frrem_accum;
+       uint32_t hfnum_other_samples;
+       uint64_t hfnum_other_frrem_accum;
+#endif
+
+#ifdef DWC_UTE_CFI
+       uint16_t pwron_rxfsiz;
+       uint16_t pwron_gnptxfsiz;
+       uint16_t pwron_txfsiz[15];
+
+       uint16_t init_rxfsiz;
+       uint16_t init_gnptxfsiz;
+       uint16_t init_txfsiz[15];
+#endif
+
+       /** Lx state of device */
+       dwc_otg_lx_state_e lx_state;
+
+       /** Saved Core Global registers */
+       struct dwc_otg_global_regs_backup *gr_backup;
+       /** Saved Host registers */
+       struct dwc_otg_host_regs_backup *hr_backup;
+       /** Saved Device registers */
+       struct dwc_otg_dev_regs_backup *dr_backup;
+
+       /** Power Down Enable */
+       uint32_t power_down;
+
+       /** ADP support Enable */
+       uint32_t adp_enable;
+
+       /** ADP structure object */
+       dwc_otg_adp_t adp;
+
+       /** hibernation/suspend flag */
+       int hibernation_suspend;
+
+       /** Device mode extended hibernation flag */
+       int xhib;
+
+       /** OTG revision supported */
+       uint32_t otg_ver;
+
+       /** OTG status flag used for HNP polling */
+       uint8_t otg_sts;
+
+       /** Pointer to either hcd->lock or pcd->lock */
+       dwc_spinlock_t *lock;
+
+       /** Start predict NextEP based on Learning Queue if equal 1,
+        * also used as counter of disabled NP IN EP's */
+       uint8_t start_predict;
+
+       /** NextEp sequence, including EP0: nextep_seq[] = EP if non-periodic and 
+        * active, 0xff otherwise */
+       uint8_t nextep_seq[MAX_EPS_CHANNELS];
+
+       /** Index of fisrt EP in nextep_seq array which should be re-enabled **/
+       uint8_t first_in_nextep_seq;
+
+       /** Frame number while entering to ISR - needed for ISOCs **/
+       uint32_t frame_num; 
+
+};
+
+#ifdef DEBUG
+/*
+ * This function is called when transfer is timed out.
+ */
+extern void hc_xfer_timeout(void *ptr);
+#endif
+
+/*
+ * This function is called when transfer is timed out on endpoint.
+ */
+extern void ep_xfer_timeout(void *ptr);
+
+/*
+ * The following functions are functions for works
+ * using during handling some interrupts
+ */
+extern void w_conn_id_status_change(void *p);
+
+extern void w_wakeup_detected(void *p);
+
+/** Saves global register values into system memory. */
+extern int dwc_otg_save_global_regs(dwc_otg_core_if_t * core_if);
+/** Saves device register values into system memory. */
+extern int dwc_otg_save_dev_regs(dwc_otg_core_if_t * core_if);
+/** Saves host register values into system memory. */
+extern int dwc_otg_save_host_regs(dwc_otg_core_if_t * core_if);
+/** Restore global register values. */
+extern int dwc_otg_restore_global_regs(dwc_otg_core_if_t * core_if);
+/** Restore host register values. */
+extern int dwc_otg_restore_host_regs(dwc_otg_core_if_t * core_if, int reset);
+/** Restore device register values. */
+extern int dwc_otg_restore_dev_regs(dwc_otg_core_if_t * core_if,
+                                   int rem_wakeup);
+extern int restore_lpm_i2c_regs(dwc_otg_core_if_t * core_if);
+extern int restore_essential_regs(dwc_otg_core_if_t * core_if, int rmode,
+                                 int is_host);
+
+extern int dwc_otg_host_hibernation_restore(dwc_otg_core_if_t * core_if,
+                                           int restore_mode, int reset);
+extern int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
+                                             int rem_wakeup, int reset);
+
+/*
+ * The following functions support initialization of the CIL driver component
+ * and the DWC_otg controller.
+ */
+extern void dwc_otg_core_host_init(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_core_dev_init(dwc_otg_core_if_t * _core_if);
+
+/** @name Device CIL Functions
+ * The following functions support managing the DWC_otg controller in device
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_wakeup(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_read_setup_packet(dwc_otg_core_if_t * _core_if,
+                                     uint32_t * _dest);
+extern uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_ep0_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_deactivate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * _core_if,
+                                     dwc_ep_t * _ep);
+extern void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t * _core_if,
+                                        dwc_ep_t * _ep);
+extern void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * _core_if,
+                                      dwc_ep_t * _ep);
+extern void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * _core_if,
+                                         dwc_ep_t * _ep);
+extern void dwc_otg_ep_write_packet(dwc_otg_core_if_t * _core_if,
+                                   dwc_ep_t * _ep, int _dma);
+extern void dwc_otg_ep_set_stall(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * _core_if,
+                                  dwc_ep_t * _ep);
+extern void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * _core_if);
+
+#ifdef DWC_EN_ISOC
+extern void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t * core_if,
+                                             dwc_ep_t * ep);
+extern void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t * core_if,
+                                             dwc_ep_t * ep);
+#endif /* DWC_EN_ISOC */
+/**@}*/
+
+/** @name Host CIL Functions
+ * The following functions support managing the DWC_otg controller in host
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_hc_init(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
+extern void dwc_otg_hc_halt(dwc_otg_core_if_t * _core_if,
+                           dwc_hc_t * _hc, dwc_otg_halt_status_e _halt_status);
+extern void dwc_otg_hc_cleanup(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
+extern void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * _core_if,
+                                     dwc_hc_t * _hc);
+extern int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * _core_if,
+                                       dwc_hc_t * _hc);
+extern void dwc_otg_hc_do_ping(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
+extern void dwc_otg_hc_write_packet(dwc_otg_core_if_t * _core_if,
+                                   dwc_hc_t * _hc);
+extern void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * _core_if);
+
+extern void dwc_otg_hc_start_transfer_ddma(dwc_otg_core_if_t * core_if,
+                                          dwc_hc_t * hc);
+
+extern uint32_t calc_frame_interval(dwc_otg_core_if_t * core_if);
+
+/* Macro used to clear one channel interrupt */
+#define clear_hc_int(_hc_regs_, _intr_) \
+do { \
+       hcint_data_t hcint_clear = {.d32 = 0}; \
+       hcint_clear.b._intr_ = 1; \
+       DWC_WRITE_REG32(&(_hc_regs_)->hcint, hcint_clear.d32); \
+} while (0)
+
+/*
+ * Macro used to disable one channel interrupt. Channel interrupts are
+ * disabled when the channel is halted or released by the interrupt handler.
+ * There is no need to handle further interrupts of that type until the
+ * channel is re-assigned. In fact, subsequent handling may cause crashes
+ * because the channel structures are cleaned up when the channel is released.
+ */
+#define disable_hc_int(_hc_regs_, _intr_) \
+do { \
+       hcintmsk_data_t hcintmsk = {.d32 = 0}; \
+       hcintmsk.b._intr_ = 1; \
+       DWC_MODIFY_REG32(&(_hc_regs_)->hcintmsk, hcintmsk.d32, 0); \
+} while (0)
+
+/**
+ * This function Reads HPRT0 in preparation to modify. It keeps the
+ * WC bits 0 so that if they are read as 1, they won't clear when you
+ * write it back
+ */
+static inline uint32_t dwc_otg_read_hprt0(dwc_otg_core_if_t * _core_if)
+{
+       hprt0_data_t hprt0;
+       hprt0.d32 = DWC_READ_REG32(_core_if->host_if->hprt0);
+       hprt0.b.prtena = 0;
+       hprt0.b.prtconndet = 0;
+       hprt0.b.prtenchng = 0;
+       hprt0.b.prtovrcurrchng = 0;
+       return hprt0.d32;
+}
+
+/**@}*/
+
+/** @name Common CIL Functions
+ * The following functions support managing the DWC_otg controller in either
+ * device or host mode.
+ */
+/**@{*/
+
+extern void dwc_otg_read_packet(dwc_otg_core_if_t * core_if,
+                               uint8_t * dest, uint16_t bytes);
+
+extern void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * _core_if, const int _num);
+extern void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_core_reset(dwc_otg_core_if_t * _core_if);
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_core_intr(dwc_otg_core_if_t * core_if)
+{
+       return (DWC_READ_REG32(&core_if->core_global_regs->gintsts) &
+               DWC_READ_REG32(&core_if->core_global_regs->gintmsk));
+}
+
+/**
+ * This function returns the OTG Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_otg_intr(dwc_otg_core_if_t * core_if)
+{
+       return (DWC_READ_REG32(&core_if->core_global_regs->gotgint));
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the IN endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_in_ep_intr(dwc_otg_core_if_t *
+                                                      core_if)
+{
+
+       uint32_t v;
+
+       if (core_if->multiproc_int_enable) {
+               v = DWC_READ_REG32(&core_if->dev_if->
+                                  dev_global_regs->deachint) &
+                   DWC_READ_REG32(&core_if->
+                                  dev_if->dev_global_regs->deachintmsk);
+       } else {
+               v = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daint) &
+                   DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
+       }
+       return (v & 0xffff);
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the OUT endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_out_ep_intr(dwc_otg_core_if_t *
+                                                       core_if)
+{
+       uint32_t v;
+
+       if (core_if->multiproc_int_enable) {
+               v = DWC_READ_REG32(&core_if->dev_if->
+                                  dev_global_regs->deachint) &
+                   DWC_READ_REG32(&core_if->
+                                  dev_if->dev_global_regs->deachintmsk);
+       } else {
+               v = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daint) &
+                   DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
+       }
+
+       return ((v & 0xffff0000) >> 16);
+}
+
+/**
+ * This function returns the Device IN EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_in_ep_intr(dwc_otg_core_if_t * core_if,
+                                                  dwc_ep_t * ep)
+{
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       uint32_t v, msk, emp;
+
+       if (core_if->multiproc_int_enable) {
+               msk =
+                   DWC_READ_REG32(&dev_if->
+                                  dev_global_regs->diepeachintmsk[ep->num]);
+               emp =
+                   DWC_READ_REG32(&dev_if->
+                                  dev_global_regs->dtknqr4_fifoemptymsk);
+               msk |= ((emp >> ep->num) & 0x1) << 7;
+               v = DWC_READ_REG32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
+       } else {
+               msk = DWC_READ_REG32(&dev_if->dev_global_regs->diepmsk);
+               emp =
+                   DWC_READ_REG32(&dev_if->
+                                  dev_global_regs->dtknqr4_fifoemptymsk);
+               msk |= ((emp >> ep->num) & 0x1) << 7;
+               v = DWC_READ_REG32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
+       }
+
+       return v;
+}
+
+/**
+ * This function returns the Device OUT EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_out_ep_intr(dwc_otg_core_if_t *
+                                                   _core_if, dwc_ep_t * _ep)
+{
+       dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+       uint32_t v;
+       doepmsk_data_t msk = {.d32 = 0 };
+
+       if (_core_if->multiproc_int_enable) {
+               msk.d32 =
+                   DWC_READ_REG32(&dev_if->
+                                  dev_global_regs->doepeachintmsk[_ep->num]);
+               if (_core_if->pti_enh_enable) {
+                       msk.b.pktdrpsts = 1;
+               }
+               v = DWC_READ_REG32(&dev_if->
+                                  out_ep_regs[_ep->num]->doepint) & msk.d32;
+       } else {
+               msk.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->doepmsk);
+               if (_core_if->pti_enh_enable) {
+                       msk.b.pktdrpsts = 1;
+               }
+               v = DWC_READ_REG32(&dev_if->
+                                  out_ep_regs[_ep->num]->doepint) & msk.d32;
+       }
+       return v;
+}
+
+/**
+ * This function returns the Host All Channel Interrupt register
+ */
+static inline uint32_t dwc_otg_read_host_all_channels_intr(dwc_otg_core_if_t *
+                                                          _core_if)
+{
+       return (DWC_READ_REG32(&_core_if->host_if->host_global_regs->haint));
+}
+
+static inline uint32_t dwc_otg_read_host_channel_intr(dwc_otg_core_if_t *
+                                                     _core_if, dwc_hc_t * _hc)
+{
+       return (DWC_READ_REG32
+               (&_core_if->host_if->hc_regs[_hc->hc_num]->hcint));
+}
+
+/**
+ * This function returns the mode of the operation, host or device.
+ *
+ * @return 0 - Device Mode, 1 - Host Mode
+ */
+static inline uint32_t dwc_otg_mode(dwc_otg_core_if_t * _core_if)
+{
+       return (DWC_READ_REG32(&_core_if->core_global_regs->gintsts) & 0x1);
+}
+
+/**@}*/
+
+/**
+ * DWC_otg CIL callback structure. This structure allows the HCD and
+ * PCD to register functions used for starting and stopping the PCD
+ * and HCD for role change on for a DRD.
+ */
+typedef struct dwc_otg_cil_callbacks {
+       /** Start function for role change */
+       int (*start) (void *_p);
+       /** Stop Function for role change */
+       int (*stop) (void *_p);
+       /** Disconnect Function for role change */
+       int (*disconnect) (void *_p);
+       /** Resume/Remote wakeup Function */
+       int (*resume_wakeup) (void *_p);
+       /** Suspend function */
+       int (*suspend) (void *_p);
+       /** Session Start (SRP) */
+       int (*session_start) (void *_p);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       /** Sleep (switch to L0 state) */
+       int (*sleep) (void *_p);
+#endif
+       /** Pointer passed to start() and stop() */
+       void *p;
+} dwc_otg_cil_callbacks_t;
+
+extern void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * _core_if,
+                                              dwc_otg_cil_callbacks_t * _cb,
+                                              void *_p);
+extern void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * _core_if,
+                                              dwc_otg_cil_callbacks_t * _cb,
+                                              void *_p);
+
+void dwc_otg_initiate_srp(dwc_otg_core_if_t * core_if);
+
+//////////////////////////////////////////////////////////////////////
+/** Start the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_start(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->hcd_cb && core_if->hcd_cb->start) {
+               core_if->hcd_cb->start(core_if->hcd_cb->p);
+       }
+}
+
+/** Stop the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_stop(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->hcd_cb && core_if->hcd_cb->stop) {
+               core_if->hcd_cb->stop(core_if->hcd_cb->p);
+       }
+}
+
+/** Disconnect the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_disconnect(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->hcd_cb && core_if->hcd_cb->disconnect) {
+               core_if->hcd_cb->disconnect(core_if->hcd_cb->p);
+       }
+}
+
+/** Inform the HCD the a New Session has begun.  Helper function for
+ * using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_session_start(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->hcd_cb && core_if->hcd_cb->session_start) {
+               core_if->hcd_cb->session_start(core_if->hcd_cb->p);
+       }
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * Inform the HCD about LPM sleep.
+ * Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_sleep(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->hcd_cb && core_if->hcd_cb->sleep) {
+               core_if->hcd_cb->sleep(core_if->hcd_cb->p);
+       }
+}
+#endif
+
+/** Resume the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_resume(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->hcd_cb && core_if->hcd_cb->resume_wakeup) {
+               core_if->hcd_cb->resume_wakeup(core_if->hcd_cb->p);
+       }
+}
+
+/** Start the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_start(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->pcd_cb && core_if->pcd_cb->start) {
+               core_if->pcd_cb->start(core_if->pcd_cb->p);
+       }
+}
+
+/** Stop the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_stop(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->pcd_cb && core_if->pcd_cb->stop) {
+               core_if->pcd_cb->stop(core_if->pcd_cb->p);
+       }
+}
+
+/** Suspend the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_suspend(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->pcd_cb && core_if->pcd_cb->suspend) {
+               core_if->pcd_cb->suspend(core_if->pcd_cb->p);
+       }
+}
+
+/** Resume the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_resume(dwc_otg_core_if_t * core_if)
+{
+       if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+               core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+       }
+}
+
+//////////////////////////////////////////////////////////////////////
+
+#endif
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
new file mode 100644
index 0000000..21804c4
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
@@ -0,0 +1,1563 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil_intr.c $
+ * $Revision: #32 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * This file contains the Common Interrupt handlers.
+ */
+#include "dwc_os.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_hcd.h"
+
+#ifdef DEBUG
+inline const char *op_state_str(dwc_otg_core_if_t * core_if)
+{
+       return (core_if->op_state == A_HOST ? "a_host" :
+               (core_if->op_state == A_SUSPEND ? "a_suspend" :
+                (core_if->op_state == A_PERIPHERAL ? "a_peripheral" :
+                 (core_if->op_state == B_PERIPHERAL ? "b_peripheral" :
+                  (core_if->op_state == B_HOST ? "b_host" : "unknown")))));
+}
+#endif
+
+/** This function will log a debug message
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_mode_mismatch_intr(dwc_otg_core_if_t * core_if)
+{
+       gintsts_data_t gintsts;
+       DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n",
+                dwc_otg_mode(core_if) ? "Host" : "Device");
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.modemismatch = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+       return 1;
+}
+
+/**
+ * This function handles the OTG Interrupts. It reads the OTG
+ * Interrupt Register (GOTGINT) to determine what interrupt has
+ * occurred.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       gotgint_data_t gotgint;
+       gotgctl_data_t gotgctl;
+       gintmsk_data_t gintmsk;
+       gpwrdn_data_t gpwrdn;
+
+       gotgint.d32 = DWC_READ_REG32(&global_regs->gotgint);
+       gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+       DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32,
+                   op_state_str(core_if));
+
+       if (gotgint.b.sesenddet) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Session End Detected++ (%s)\n",
+                           op_state_str(core_if));
+               gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+
+               if (core_if->op_state == B_HOST) {
+                       cil_pcd_start(core_if);
+                       core_if->op_state = B_PERIPHERAL;
+               } else {
+                       /* If not B_HOST and Device HNP still set. HNP
+                        * Did not succeed!*/
+                       if (gotgctl.b.devhnpen) {
+                               DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
+                               __DWC_ERROR("Device Not Connected/Responding!\n");
+                       }
+
+                       /* If Session End Detected the B-Cable has
+                        * been disconnected. */
+                       /* Reset PCD and Gadget driver to a
+                        * clean state. */
+                       core_if->lx_state = DWC_OTG_L0;
+                       DWC_SPINUNLOCK(core_if->lock);
+                       cil_pcd_stop(core_if);
+                       DWC_SPINLOCK(core_if->lock);
+
+                       if (core_if->adp_enable) {
+                               if (core_if->power_down == 2) {
+                                       gpwrdn.d32 = 0;
+                                       gpwrdn.b.pwrdnswtch = 1;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        core_global_regs->
+                                                        gpwrdn, gpwrdn.d32, 0);
+                               }
+
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuintsel = 1;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+
+                               dwc_otg_adp_sense_start(core_if);
+                       }
+               }
+
+               gotgctl.d32 = 0;
+               gotgctl.b.devhnpen = 1;
+               DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+       }
+       if (gotgint.b.sesreqsucstschng) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Session Reqeust Success Status Change++\n");
+               gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+               if (gotgctl.b.sesreqscs) {
+
+                       if ((core_if->core_params->phy_type ==
+                            DWC_PHY_TYPE_PARAM_FS) && (core_if->core_params->i2c_enable)) {
+                               core_if->srp_success = 1;
+                       } else {
+                               DWC_SPINUNLOCK(core_if->lock);
+                               cil_pcd_resume(core_if);
+                               DWC_SPINLOCK(core_if->lock);
+                               /* Clear Session Request */
+                               gotgctl.d32 = 0;
+                               gotgctl.b.sesreq = 1;
+                               DWC_MODIFY_REG32(&global_regs->gotgctl,
+                                                gotgctl.d32, 0);
+                       }
+               }
+       }
+       if (gotgint.b.hstnegsucstschng) {
+               /* Print statements during the HNP interrupt handling
+                * can cause it to fail.*/
+               gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+               /* WA for 3.00a- HW is not setting cur_mode, even sometimes
+                * this does not help*/
+               if (core_if->snpsid >= OTG_CORE_REV_3_00a)
+                       dwc_udelay(100);
+               if (gotgctl.b.hstnegscs) {
+                       if (dwc_otg_is_host_mode(core_if)) {
+                               core_if->op_state = B_HOST;
+                               /*
+                                * Need to disable SOF interrupt immediately.
+                                * When switching from device to host, the PCD
+                                * interrupt handler won't handle the
+                                * interrupt if host mode is already set. The
+                                * HCD interrupt handler won't get called if
+                                * the HCD state is HALT. This means that the
+                                * interrupt does not get handled and Linux
+                                * complains loudly.
+                                */
+                               gintmsk.d32 = 0;
+                               gintmsk.b.sofintr = 1;
+                               DWC_MODIFY_REG32(&global_regs->gintmsk,
+                                                gintmsk.d32, 0);
+                               /* Call callback function with spin lock released */
+                               DWC_SPINUNLOCK(core_if->lock);
+                               cil_pcd_stop(core_if);
+                               /*
+                                * Initialize the Core for Host mode.
+                                */
+                               cil_hcd_start(core_if);
+                               DWC_SPINLOCK(core_if->lock);
+                               core_if->op_state = B_HOST;
+                       }
+               } else {
+                       gotgctl.d32 = 0;
+                       gotgctl.b.hnpreq = 1;
+                       gotgctl.b.devhnpen = 1;
+                       DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+                       DWC_DEBUGPL(DBG_ANY, "HNP Failed\n");
+                       __DWC_ERROR("Device Not Connected/Responding\n");
+               }
+       }
+       if (gotgint.b.hstnegdet) {
+               /* The disconnect interrupt is set at the same time as
+                * Host Negotiation Detected.  During the mode
+                * switch all interrupts are cleared so the disconnect
+                * interrupt handler will not get executed.
+                */
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Host Negotiation Detected++ (%s)\n",
+                           (dwc_otg_is_host_mode(core_if) ? "Host" :
+                            "Device"));
+               if (dwc_otg_is_device_mode(core_if)) {
+                       DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n",
+                                   core_if->op_state);
+                       DWC_SPINUNLOCK(core_if->lock);
+                       cil_hcd_disconnect(core_if);
+                       cil_pcd_start(core_if);
+                       DWC_SPINLOCK(core_if->lock);
+                       core_if->op_state = A_PERIPHERAL;
+               } else {
+                       /*
+                        * Need to disable SOF interrupt immediately. When
+                        * switching from device to host, the PCD interrupt
+                        * handler won't handle the interrupt if host mode is
+                        * already set. The HCD interrupt handler won't get
+                        * called if the HCD state is HALT. This means that
+                        * the interrupt does not get handled and Linux
+                        * complains loudly.
+                        */
+                       gintmsk.d32 = 0;
+                       gintmsk.b.sofintr = 1;
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, gintmsk.d32, 0);
+                       DWC_SPINUNLOCK(core_if->lock);
+                       cil_pcd_stop(core_if);
+                       cil_hcd_start(core_if);
+                       DWC_SPINLOCK(core_if->lock);
+                       core_if->op_state = A_HOST;
+               }
+       }
+       if (gotgint.b.adevtoutchng) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "A-Device Timeout Change++\n");
+       }
+       if (gotgint.b.debdone) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " "Debounce Done++\n");
+       }
+
+       /* Clear GOTGINT */
+       DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, gotgint.d32);
+
+       return 1;
+}
+
+void w_conn_id_status_change(void *p)
+{
+       dwc_otg_core_if_t *core_if = p;
+       uint32_t count = 0;
+       gotgctl_data_t gotgctl = {.d32 = 0 };
+
+       gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+       DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
+       DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
+
+       /* B-Device connector (Device Mode) */
+       if (gotgctl.b.conidsts) {
+               /* Wait for switch to device mode. */
+               while (!dwc_otg_is_device_mode(core_if)) {
+                       DWC_PRINTF("Waiting for Peripheral Mode, Mode=%s\n",
+                                  (dwc_otg_is_host_mode(core_if) ? "Host" :
+                                   "Peripheral"));
+                       dwc_mdelay(100);
+                       if (++count > 10000)
+                               break;
+               }
+               DWC_ASSERT(++count < 10000,
+                          "Connection id status change timed out");
+               core_if->op_state = B_PERIPHERAL;
+               dwc_otg_core_init(core_if);
+               dwc_otg_enable_global_interrupts(core_if);
+               cil_pcd_start(core_if);
+       } else {
+               /* A-Device connector (Host Mode) */
+               while (!dwc_otg_is_host_mode(core_if)) {
+                       DWC_PRINTF("Waiting for Host Mode, Mode=%s\n",
+                                  (dwc_otg_is_host_mode(core_if) ? "Host" :
+                                   "Peripheral"));
+                       dwc_mdelay(100);
+                       if (++count > 10000)
+                               break;
+               }
+               DWC_ASSERT(++count < 10000,
+                          "Connection id status change timed out");
+               core_if->op_state = A_HOST;
+               /*
+                * Initialize the Core for Host mode.
+                */
+               dwc_otg_core_init(core_if);
+               dwc_otg_enable_global_interrupts(core_if);
+               cil_hcd_start(core_if);
+       }
+}
+
+/**
+ * This function handles the Connector ID Status Change Interrupt.  It
+ * reads the OTG Interrupt Register (GOTCTL) to determine whether this
+ * is a Device to Host Mode transition or a Host Mode to Device
+ * Transition. 
+ *
+ * This only occurs when the cable is connected/removed from the PHY
+ * connector.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t * core_if)
+{
+
+       /*
+        * Need to disable SOF interrupt immediately. If switching from device
+        * to host, the PCD interrupt handler won't handle the interrupt if
+        * host mode is already set. The HCD interrupt handler won't get
+        * called if the HCD state is HALT. This means that the interrupt does
+        * not get handled and Linux complains loudly.
+        */
+       gintmsk_data_t gintmsk = {.d32 = 0 };
+       gintsts_data_t gintsts = {.d32 = 0 };
+
+       gintmsk.b.sofintr = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+
+       DWC_DEBUGPL(DBG_CIL,
+                   " ++Connector ID Status Change Interrupt++  (%s)\n",
+                   (dwc_otg_is_host_mode(core_if) ? "Host" : "Device"));
+       
+       DWC_SPINUNLOCK(core_if->lock);
+
+       /*
+        * Need to schedule a work, as there are possible DELAY function calls
+        * Release lock before scheduling workq as it holds spinlock during scheduling
+        */
+
+       DWC_WORKQ_SCHEDULE(core_if->wq_otg, w_conn_id_status_change,
+                          core_if, "connection id status change");
+       DWC_SPINLOCK(core_if->lock);
+
+       /* Set flag and clear interrupt */
+       gintsts.b.conidstschng = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates that a device is initiating the Session
+ * Request Protocol to request the host to turn on bus power so a new
+ * session can begin. The handler responds by turning on bus power. If
+ * the DWC_otg controller is in low power mode, the handler brings the
+ * controller out of low power mode before turning on bus power.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t * core_if)
+{
+       gintsts_data_t gintsts;
+
+#ifndef DWC_HOST_ONLY
+       DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
+
+       if (dwc_otg_is_device_mode(core_if)) {
+               DWC_PRINTF("SRP: Device mode\n");
+       } else {
+               hprt0_data_t hprt0;
+               DWC_PRINTF("SRP: Host mode\n");
+
+               /* Turn on the port power bit. */
+               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+               hprt0.b.prtpwr = 1;
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+               /* Start the Connection timer. So a message can be displayed
+                * if connect does not occur within 10 seconds. */
+               cil_hcd_session_start(core_if);
+       }
+#endif
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.sessreqintr = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+void w_wakeup_detected(void *p)
+{
+       dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) p;
+       /*
+        * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
+        * so that OPT tests pass with all PHYs).
+        */
+       hprt0_data_t hprt0 = {.d32 = 0 };
+#if 0
+       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+       /* Restart the Phy Clock */
+       pcgcctl.b.stoppclk = 1;
+       DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+       dwc_udelay(10);
+#endif //0
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32);
+//      dwc_mdelay(70);
+       hprt0.b.prtres = 0;     /* Resume */
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+       DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n",
+                   DWC_READ_REG32(core_if->host_if->hprt0));
+
+       cil_hcd_resume(core_if);
+
+       /** Change to L0 state*/
+       core_if->lx_state = DWC_OTG_L0;
+}
+
+/**
+ * This interrupt indicates that the DWC_otg controller has detected a
+ * resume or remote wakeup sequence. If the DWC_otg controller is in
+ * low power mode, the handler must brings the controller out of low
+ * power mode. The controller automatically begins resume
+ * signaling. The handler schedules a time to stop resume signaling.
+ */
+int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
+{
+       gintsts_data_t gintsts;
+
+       DWC_DEBUGPL(DBG_ANY,
+                   "++Resume and Remote Wakeup Detected Interrupt++\n");
+
+       DWC_PRINTF("%s lxstate = %d\n", __func__, core_if->lx_state);
+
+       if (dwc_otg_is_device_mode(core_if)) {
+               dctl_data_t dctl = {.d32 = 0 };
+               DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n",
+                           DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
+                                          dsts));
+               if (core_if->lx_state == DWC_OTG_L2) {
+#ifdef PARTIAL_POWER_DOWN
+                       if (core_if->hwcfg4.b.power_optimiz) {
+                               pcgcctl_data_t power = {.d32 = 0 };
+
+                               power.d32 = DWC_READ_REG32(core_if->pcgcctl);
+                               DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n",
+                                           power.d32);
+
+                               power.b.stoppclk = 0;
+                               DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+
+                               power.b.pwrclmp = 0;
+                               DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+
+                               power.b.rstpdwnmodule = 0;
+                               DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+                       }
+#endif
+                       /* Clear the Remote Wakeup Signaling */
+                       dctl.b.rmtwkupsig = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                        dctl, dctl.d32, 0);
+
+                       DWC_SPINUNLOCK(core_if->lock);
+                       if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+                               core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+                       }
+                       DWC_SPINLOCK(core_if->lock);
+               } else {
+                       glpmcfg_data_t lpmcfg;
+                       lpmcfg.d32 =
+                           DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+                       lpmcfg.b.hird_thres &= (~(1 << 4));
+                       DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
+                                       lpmcfg.d32);
+               }
+               /** Change to L0 state*/
+               core_if->lx_state = DWC_OTG_L0;
+       } else {
+               if (core_if->lx_state != DWC_OTG_L1) {
+                       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+
+                       /* Restart the Phy Clock */
+                       pcgcctl.b.stoppclk = 1;
+                       DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+                       DWC_TIMER_SCHEDULE(core_if->wkp_timer, 71);
+               } else {
+                       /** Change to L0 state*/
+                       core_if->lx_state = DWC_OTG_L0;
+               }
+       }
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.wkupintr = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * Device disconnect.
+ */
+static int32_t dwc_otg_handle_pwrdn_disconnect_intr(dwc_otg_core_if_t *core_if)
+{
+       gpwrdn_data_t gpwrdn = { .d32 = 0 };
+       gpwrdn_data_t gpwrdn_temp = { .d32 = 0 };
+       gpwrdn_temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+       DWC_PRINTF("%s called\n", __FUNCTION__);
+
+       if (!core_if->hibernation_suspend) {
+               DWC_PRINTF("Already exited from Hibernation\n");
+               return 1;
+       }
+
+       /* Switch on the voltage to the core */
+       gpwrdn.b.pwrdnswtch = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Reset the core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Disable power clamps*/
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnclmp = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Remove reset the core signal */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable PMU interrupt */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuintsel = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       core_if->hibernation_suspend = 0;
+
+       /* Disable PMU */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuactv = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       if (gpwrdn_temp.b.idsts) {
+               core_if->op_state = B_PERIPHERAL;
+               dwc_otg_core_init(core_if);
+               dwc_otg_enable_global_interrupts(core_if);
+               cil_pcd_start(core_if);
+       } else {
+               core_if->op_state = A_HOST;
+               dwc_otg_core_init(core_if);
+               dwc_otg_enable_global_interrupts(core_if);
+               cil_hcd_start(core_if);
+       }
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * remote wakeup sequence.
+ */
+static int32_t dwc_otg_handle_pwrdn_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       DWC_DEBUGPL(DBG_ANY,
+                   "++Powerdown Remote Wakeup Detected Interrupt++\n");
+
+       if (!core_if->hibernation_suspend) {
+               DWC_PRINTF("Already exited from Hibernation\n");
+               return 1;
+       }
+
+       gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       if (gpwrdn.b.idsts) {   // Device Mode
+               if ((core_if->power_down == 2)
+                   && (core_if->hibernation_suspend == 1)) {
+                       dwc_otg_device_hibernation_restore(core_if, 0, 0);
+               }
+       } else {
+               if ((core_if->power_down == 2)
+                   && (core_if->hibernation_suspend == 1)) {
+                       dwc_otg_host_hibernation_restore(core_if, 1, 0);
+               }
+       }
+       return 1;
+}
+
+static int32_t dwc_otg_handle_pwrdn_idsts_change(dwc_otg_device_t *otg_dev)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
+       dwc_otg_core_if_t *core_if = otg_dev->core_if;
+
+       DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
+       gpwrdn_temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       if (core_if->power_down == 2) {
+               if (!core_if->hibernation_suspend) {
+                       DWC_PRINTF("Already exited from Hibernation\n");
+                       return 1;
+               }
+               DWC_DEBUGPL(DBG_ANY, "Exit from hibernation on ID sts change\n");
+               /* Switch on the voltage to the core */
+               gpwrdn.b.pwrdnswtch = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               /* Reset the core */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnrstn = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               /* Disable power clamps */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnclmp = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+               /* Remove reset the core signal */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnrstn = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+               dwc_udelay(10);
+
+               /* Disable PMU interrupt */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pmuintsel = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+               /*Indicates that we are exiting from hibernation */
+               core_if->hibernation_suspend = 0;
+
+               /* Disable PMU */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pmuactv = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               gpwrdn.d32 = core_if->gr_backup->gpwrdn_local;
+               if (gpwrdn.b.dis_vbus == 1) {
+                       gpwrdn.d32 = 0;
+                       gpwrdn.b.dis_vbus = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               }
+
+               if (gpwrdn_temp.b.idsts) {
+                       core_if->op_state = B_PERIPHERAL;
+                       dwc_otg_core_init(core_if);
+                       dwc_otg_enable_global_interrupts(core_if);
+                       cil_pcd_start(core_if);
+               } else {
+                       core_if->op_state = A_HOST;
+                       dwc_otg_core_init(core_if);
+                       dwc_otg_enable_global_interrupts(core_if);
+                       cil_hcd_start(core_if);
+               }
+       }
+
+       if (core_if->adp_enable) {
+               uint8_t is_host = 0;
+               DWC_SPINUNLOCK(core_if->lock);
+               /* Change the core_if's lock to hcd/pcd lock depend on mode? */
+#ifndef DWC_HOST_ONLY          
+               if (gpwrdn_temp.b.idsts)
+                       core_if->lock = otg_dev->pcd->lock;
+#endif
+#ifndef DWC_DEVICE_ONLY
+               if (!gpwrdn_temp.b.idsts) {
+                               core_if->lock = otg_dev->hcd->lock;     
+                               is_host = 1;
+               }
+#endif
+               DWC_PRINTF("RESTART ADP\n");
+               if (core_if->adp.probe_enabled)         
+                       dwc_otg_adp_probe_stop(core_if);
+               if (core_if->adp.sense_enabled)         
+                       dwc_otg_adp_sense_stop(core_if);
+               if (core_if->adp.sense_timer_started)           
+                       DWC_TIMER_CANCEL(core_if->adp.sense_timer);
+               if (core_if->adp.vbuson_timer_started)          
+                       DWC_TIMER_CANCEL(core_if->adp.vbuson_timer);
+               core_if->adp.probe_timer_values[0] = -1;
+               core_if->adp.probe_timer_values[1] = -1;
+               core_if->adp.sense_timer_started = 0;
+               core_if->adp.vbuson_timer_started = 0;
+               core_if->adp.probe_counter = 0;
+               core_if->adp.gpwrdn = 0;
+               
+               /* Disable PMU and restart ADP */
+               gpwrdn_temp.d32 = 0;
+               gpwrdn_temp.b.pmuactv = 1;
+               gpwrdn_temp.b.pmuintsel = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               DWC_PRINTF("Check point 1\n");
+               dwc_mdelay(110);
+               dwc_otg_adp_start(core_if, is_host);
+               DWC_SPINLOCK(core_if->lock);
+       }
+       
+
+       return 1;
+}
+
+static int32_t dwc_otg_handle_pwrdn_session_change(dwc_otg_core_if_t * core_if)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       int32_t otg_cap_param = core_if->core_params->otg_cap;
+       DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
+
+       gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       if (core_if->power_down == 2) {
+               if (!core_if->hibernation_suspend) {
+                       DWC_PRINTF("Already exited from Hibernation\n");
+                       return 1;
+               }
+
+               if ((otg_cap_param != DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE ||
+                        otg_cap_param != DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE) &&
+                       gpwrdn.b.bsessvld == 0) {
+                       /* Save gpwrdn register for further usage if stschng interrupt */
+                       core_if->gr_backup->gpwrdn_local =
+                               DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+                       /*Exit from ISR and wait for stschng interrupt with bsessvld = 1 */
+                       return 1;
+               }
+
+               /* Switch on the voltage to the core */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnswtch = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               /* Reset the core */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnrstn = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               /* Disable power clamps */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnclmp = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+               /* Remove reset the core signal */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pwrdnrstn = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+               dwc_udelay(10);
+
+               /* Disable PMU interrupt */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pmuintsel = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               /*Indicates that we are exiting from hibernation */
+               core_if->hibernation_suspend = 0;
+
+               /* Disable PMU */
+               gpwrdn.d32 = 0;
+               gpwrdn.b.pmuactv = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+               dwc_udelay(10);
+
+               core_if->op_state = B_PERIPHERAL;
+               dwc_otg_core_init(core_if);
+               dwc_otg_enable_global_interrupts(core_if);
+               cil_pcd_start(core_if);
+
+               if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE ||
+                       otg_cap_param == DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE) {
+                       /*
+                        * Initiate SRP after initial ADP probe.
+                        */
+                       dwc_otg_initiate_srp(core_if);  
+               }
+       }
+
+       return 1;
+}
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * status change either on IDDIG or BSessVld.
+ */
+static uint32_t dwc_otg_handle_pwrdn_stschng_intr(dwc_otg_device_t *otg_dev)
+{
+       int retval;
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
+       dwc_otg_core_if_t *core_if = otg_dev->core_if;
+
+       DWC_PRINTF("%s called\n", __FUNCTION__);
+       
+       if (core_if->power_down == 2) {
+               if (core_if->hibernation_suspend <= 0) {
+                       DWC_PRINTF("Already exited from Hibernation\n");
+                       return 1;
+               } else
+                       gpwrdn_temp.d32 = core_if->gr_backup->gpwrdn_local;
+
+       } else {
+               gpwrdn_temp.d32 = core_if->adp.gpwrdn;
+       }
+
+       gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       
+       if (gpwrdn.b.idsts ^ gpwrdn_temp.b.idsts) {
+               retval = dwc_otg_handle_pwrdn_idsts_change(otg_dev);
+       } else if (gpwrdn.b.bsessvld ^ gpwrdn_temp.b.bsessvld) {
+               retval = dwc_otg_handle_pwrdn_session_change(core_if);
+       }
+
+       return retval;
+}
+
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * SRP.
+ */
+static int32_t dwc_otg_handle_pwrdn_srp_intr(dwc_otg_core_if_t * core_if)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+
+       DWC_PRINTF("%s called\n", __FUNCTION__);
+
+       if (!core_if->hibernation_suspend) {
+               DWC_PRINTF("Already exited from Hibernation\n");
+               return 1;
+       }
+#ifdef DWC_DEV_SRPCAP
+       if (core_if->pwron_timer_started) {
+               core_if->pwron_timer_started = 0;
+               DWC_TIMER_CANCEL(core_if->pwron_timer);
+       }
+#endif
+
+       /* Switch on the voltage to the core */
+       gpwrdn.b.pwrdnswtch = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Reset the core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Disable power clamps */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnclmp = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Remove reset the core signal */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable PMU interrupt */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuintsel = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Indicates that we are exiting from hibernation */
+       core_if->hibernation_suspend = 0;
+
+       /* Disable PMU */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuactv = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Programm Disable VBUS to 0 */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.dis_vbus = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /*Initialize the core as Host */
+       core_if->op_state = A_HOST;
+       dwc_otg_core_init(core_if);
+       dwc_otg_enable_global_interrupts(core_if);
+       cil_hcd_start(core_if);
+
+       return 1;
+}
+
+/** This interrupt indicates that restore command after Hibernation
+ * was completed by the core. */
+int32_t dwc_otg_handle_restore_done_intr(dwc_otg_core_if_t * core_if)
+{
+       pcgcctl_data_t pcgcctl;
+       DWC_DEBUGPL(DBG_ANY, "++Restore Done Interrupt++\n");
+
+       //TODO De-assert restore signal. 8.a
+       pcgcctl.d32 = DWC_READ_REG32(core_if->pcgcctl);
+       if (pcgcctl.b.restoremode == 1) {
+               gintmsk_data_t gintmsk = {.d32 = 0 };
+               /*
+                * If restore mode is Remote Wakeup,
+                * unmask Remote Wakeup interrupt.
+                */
+               gintmsk.b.wkupintr = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+                                0, gintmsk.d32);
+       }
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates that a device has been disconnected from
+ * the root port.
+ */
+int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t * core_if)
+{
+       gintsts_data_t gintsts;
+
+       DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n",
+                   (dwc_otg_is_host_mode(core_if) ? "Host" : "Device"),
+                   op_state_str(core_if));
+
+/** @todo Consolidate this if statement. */
+#ifndef DWC_HOST_ONLY
+       if (core_if->op_state == B_HOST) {
+               /* If in device mode Disconnect and stop the HCD, then
+                * start the PCD. */
+               DWC_SPINUNLOCK(core_if->lock);
+               cil_hcd_disconnect(core_if);
+               cil_pcd_start(core_if);
+               DWC_SPINLOCK(core_if->lock);
+               core_if->op_state = B_PERIPHERAL;
+       } else if (dwc_otg_is_device_mode(core_if)) {
+               gotgctl_data_t gotgctl = {.d32 = 0 };
+               gotgctl.d32 =
+                   DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+               if (gotgctl.b.hstsethnpen == 1) {
+                       /* Do nothing, if HNP in process the OTG
+                        * interrupt "Host Negotiation Detected"
+                        * interrupt will do the mode switch.
+                        */
+               } else if (gotgctl.b.devhnpen == 0) {
+                       /* If in device mode Disconnect and stop the HCD, then
+                        * start the PCD. */
+                       DWC_SPINUNLOCK(core_if->lock);
+                       cil_hcd_disconnect(core_if);
+                       cil_pcd_start(core_if);
+                       DWC_SPINLOCK(core_if->lock);
+                       core_if->op_state = B_PERIPHERAL;
+               } else {
+                       DWC_DEBUGPL(DBG_ANY, "!a_peripheral && !devhnpen\n");
+               }
+       } else {
+               if (core_if->op_state == A_HOST) {
+                       /* A-Cable still connected but device disconnected. */
+                       cil_hcd_disconnect(core_if);
+                       if (core_if->adp_enable) {
+                               gpwrdn_data_t gpwrdn = { .d32 = 0 };
+                               cil_hcd_stop(core_if);
+                               /* Enable Power Down Logic */
+                               gpwrdn.b.pmuintsel = 1;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_otg_adp_probe_start(core_if);
+
+                               /* Power off the core */
+                               if (core_if->power_down == 2) {
+                                       gpwrdn.d32 = 0;
+                                       gpwrdn.b.pwrdnswtch = 1;
+                                       DWC_MODIFY_REG32
+                                           (&core_if->core_global_regs->gpwrdn,
+                                            gpwrdn.d32, 0);
+                               }
+                       }
+               }
+       }
+#endif
+       /* Change to L3(OFF) state */
+       core_if->lx_state = DWC_OTG_L3;
+
+       gintsts.d32 = 0;
+       gintsts.b.disconnect = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+       return 1;
+}
+
+/**
+ * This interrupt indicates that SUSPEND state has been detected on
+ * the USB.
+ *
+ * For HNP the USB Suspend interrupt signals the change from
+ * "a_peripheral" to "a_host".
+ *
+ * When power management is enabled the core will be put in low power
+ * mode.
+ */
+int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t * core_if)
+{
+       dsts_data_t dsts;
+       gintsts_data_t gintsts;
+       dcfg_data_t dcfg;
+
+       DWC_DEBUGPL(DBG_ANY, "USB SUSPEND\n");
+
+       if (dwc_otg_is_device_mode(core_if)) {
+               /* Check the Device status register to determine if the Suspend
+                * state is active. */
+               dsts.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+               DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
+               DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
+                           "HWCFG4.power Optimize=%d\n",
+                           dsts.b.suspsts, core_if->hwcfg4.b.power_optimiz);
+
+#ifdef PARTIAL_POWER_DOWN
+/** @todo Add a module parameter for power management. */
+
+               if (dsts.b.suspsts && core_if->hwcfg4.b.power_optimiz) {
+                       pcgcctl_data_t power = {.d32 = 0 };
+                       DWC_DEBUGPL(DBG_CIL, "suspend\n");
+
+                       power.b.pwrclmp = 1;
+                       DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+
+                       power.b.rstpdwnmodule = 1;
+                       DWC_MODIFY_REG32(core_if->pcgcctl, 0, power.d32);
+
+                       power.b.stoppclk = 1;
+                       DWC_MODIFY_REG32(core_if->pcgcctl, 0, power.d32);
+
+               } else {
+                       DWC_DEBUGPL(DBG_ANY, "disconnect?\n");
+               }
+#endif
+               /* PCD callback for suspend. Release the lock inside of callback function */
+               cil_pcd_suspend(core_if);
+               if (core_if->power_down == 2)
+               {
+                       dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+                       DWC_DEBUGPL(DBG_ANY,"lx_state = %08x\n",core_if->lx_state);
+                       DWC_DEBUGPL(DBG_ANY," device address = %08d\n",dcfg.b.devaddr);
+
+                       if (core_if->lx_state != DWC_OTG_L3 && dcfg.b.devaddr) {
+                               pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                               gpwrdn_data_t gpwrdn = {.d32 = 0 };
+                               gusbcfg_data_t gusbcfg = {.d32 = 0 };
+
+                               /* Change to L2(suspend) state */
+                               core_if->lx_state = DWC_OTG_L2;
+
+                               /* Clear interrupt in gintsts */
+                               gintsts.d32 = 0;
+                               gintsts.b.usbsuspend = 1;
+                               DWC_WRITE_REG32(&core_if->core_global_regs->
+                                               gintsts, gintsts.d32);
+                               DWC_PRINTF("Start of hibernation completed\n");
+                               dwc_otg_save_global_regs(core_if);
+                               dwc_otg_save_dev_regs(core_if);
+
+                               gusbcfg.d32 =
+                                   DWC_READ_REG32(&core_if->core_global_regs->
+                                                  gusbcfg);
+                               if (gusbcfg.b.ulpi_utmi_sel == 1) {
+                                       /* ULPI interface */
+                                       /* Suspend the Phy Clock */
+                                       pcgcctl.d32 = 0;
+                                       pcgcctl.b.stoppclk = 1;
+                                       DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+                                                        pcgcctl.d32);
+                                       dwc_udelay(10);
+                                       gpwrdn.b.pmuactv = 1;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        core_global_regs->
+                                                        gpwrdn, 0, gpwrdn.d32);
+                               } else {
+                                       /* UTMI+ Interface */
+                                       gpwrdn.b.pmuactv = 1;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        core_global_regs->
+                                                        gpwrdn, 0, gpwrdn.d32);
+                                       dwc_udelay(10);
+                                       pcgcctl.b.stoppclk = 1;
+                                       DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+                                                        pcgcctl.d32);
+                                       dwc_udelay(10);
+                               }
+
+                               /* Set flag to indicate that we are in hibernation */
+                               core_if->hibernation_suspend = 1;
+                               /* Enable interrupts from wake up logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuintsel = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_udelay(10);
+
+                               /* Unmask device mode interrupts in GPWRDN */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.rst_det_msk = 1;
+                               gpwrdn.b.lnstchng_msk = 1;
+                               gpwrdn.b.sts_chngint_msk = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_udelay(10);
+
+                               /* Enable Power Down Clamp */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pwrdnclmp = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_udelay(10);
+
+                               /* Switch off VDD */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pwrdnswtch = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+
+                               /* Save gpwrdn register for further usage if stschng interrupt */
+                               core_if->gr_backup->gpwrdn_local =
+                                                       DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+                               DWC_PRINTF("Hibernation completed\n");
+
+                               return 1;
+                       }
+               } else if (core_if->power_down == 3) {
+                       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                       dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+                       DWC_DEBUGPL(DBG_ANY, "lx_state = %08x\n",core_if->lx_state);
+                       DWC_DEBUGPL(DBG_ANY, " device address = %08d\n",dcfg.b.devaddr);
+
+                       if (core_if->lx_state != DWC_OTG_L3 && dcfg.b.devaddr) {
+                               DWC_DEBUGPL(DBG_ANY, "Start entering to extended hibernation\n");
+                               core_if->xhib = 1;
+
+                               /* Clear interrupt in gintsts */
+                               gintsts.d32 = 0;
+                               gintsts.b.usbsuspend = 1;
+                               DWC_WRITE_REG32(&core_if->core_global_regs->
+                                       gintsts, gintsts.d32);
+
+                               dwc_otg_save_global_regs(core_if);
+                               dwc_otg_save_dev_regs(core_if);
+
+                               /* Wait for 10 PHY clocks */
+                               dwc_udelay(10);
+
+                               /* Program GPIO register while entering to xHib */
+                               DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, 0x1);
+
+                               pcgcctl.b.enbl_extnd_hiber = 1;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+                               DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+                               pcgcctl.d32 = 0;
+                               pcgcctl.b.extnd_hiber_pwrclmp = 1;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+                               pcgcctl.d32 = 0;
+                               pcgcctl.b.extnd_hiber_switch = 1;
+                               core_if->gr_backup->xhib_gpwrdn = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+                               core_if->gr_backup->xhib_pcgcctl = DWC_READ_REG32(core_if->pcgcctl) | pcgcctl.d32;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+                               DWC_DEBUGPL(DBG_ANY, "Finished entering to extended hibernation\n");
+
+                               return 1;
+                       }
+               }
+       } else {
+               if (core_if->op_state == A_PERIPHERAL) {
+                       DWC_DEBUGPL(DBG_ANY, "a_peripheral->a_host\n");
+                       /* Clear the a_peripheral flag, back to a_host. */
+                       DWC_SPINUNLOCK(core_if->lock);
+                       cil_pcd_stop(core_if);
+                       cil_hcd_start(core_if);
+                       DWC_SPINLOCK(core_if->lock);
+                       core_if->op_state = A_HOST;
+               }
+       }
+
+       /* Change to L2(suspend) state */
+       core_if->lx_state = DWC_OTG_L2;
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.usbsuspend = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+static int32_t dwc_otg_handle_xhib_exit_intr(dwc_otg_core_if_t * core_if)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+       gahbcfg_data_t gahbcfg = {.d32 = 0 };
+
+       dwc_udelay(10);
+
+       /* Program GPIO register while entering to xHib */
+       DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, 0x0);
+
+       pcgcctl.d32 = core_if->gr_backup->xhib_pcgcctl;
+       pcgcctl.b.extnd_hiber_pwrclmp = 0;
+       DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+       dwc_udelay(10);
+
+       gpwrdn.d32 = core_if->gr_backup->xhib_gpwrdn;
+       gpwrdn.b.restore = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32);
+       dwc_udelay(10);
+
+       restore_lpm_i2c_regs(core_if);
+
+       pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
+       pcgcctl.b.max_xcvrselect = 1;
+       pcgcctl.b.ess_reg_restored = 0;
+       pcgcctl.b.extnd_hiber_switch = 0;
+       pcgcctl.b.extnd_hiber_pwrclmp = 0;
+       pcgcctl.b.enbl_extnd_hiber = 1;
+       DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+
+       gahbcfg.d32 = core_if->gr_backup->gahbcfg_local;
+       gahbcfg.b.glblintrmsk = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gahbcfg.d32);
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0x1 << 16);
+
+       DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
+                       core_if->gr_backup->gusbcfg_local);
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
+                       core_if->dr_backup->dcfg);
+
+       pcgcctl.d32 = 0;
+       pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
+       pcgcctl.b.max_xcvrselect = 1;
+       pcgcctl.d32 |= 0x608;
+       DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+       dwc_udelay(10);
+
+       pcgcctl.d32 = 0;
+       pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
+       pcgcctl.b.max_xcvrselect = 1;
+       pcgcctl.b.ess_reg_restored = 1;
+       pcgcctl.b.enbl_extnd_hiber = 1;
+       pcgcctl.b.rstpdwnmodule = 1;
+       pcgcctl.b.restoremode = 1;
+       DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+
+       DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
+
+       return 1;
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * This function hadles LPM transaction received interrupt.
+ */
+static int32_t dwc_otg_handle_lpm_intr(dwc_otg_core_if_t * core_if)
+{
+       glpmcfg_data_t lpmcfg;
+       gintsts_data_t gintsts;
+
+       if (!core_if->core_params->lpm_enable) {
+               DWC_PRINTF("Unexpected LPM interrupt\n");
+       }
+
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       DWC_PRINTF("LPM config register = 0x%08x\n", lpmcfg.d32);
+
+       if (dwc_otg_is_host_mode(core_if)) {
+               cil_hcd_sleep(core_if);
+       } else {
+               lpmcfg.b.hird_thres |= (1 << 4);
+               DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
+                               lpmcfg.d32);
+       }
+
+       /* Examine prt_sleep_sts after TL1TokenTetry period max (10 us) */
+       dwc_udelay(10);
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       if (lpmcfg.b.prt_sleep_sts) {
+               /* Save the current state */
+               core_if->lx_state = DWC_OTG_L1;
+       }
+
+       /* Clear interrupt  */
+       gintsts.d32 = 0;
+       gintsts.b.lpmtranrcvd = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+       return 1;
+}
+#endif /* CONFIG_USB_DWC_OTG_LPM */
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t * core_if)
+{
+       gahbcfg_data_t gahbcfg = {.d32 = 0 };
+       gintsts_data_t gintsts;
+       gintmsk_data_t gintmsk;
+       gintmsk_data_t gintmsk_common = {.d32 = 0 };
+       gintmsk_common.b.wkupintr = 1;
+       gintmsk_common.b.sessreqintr = 1;
+       gintmsk_common.b.conidstschng = 1;
+       gintmsk_common.b.otgintr = 1;
+       gintmsk_common.b.modemismatch = 1;
+       gintmsk_common.b.disconnect = 1;
+       gintmsk_common.b.usbsuspend = 1;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       gintmsk_common.b.lpmtranrcvd = 1;
+#endif
+       gintmsk_common.b.restoredone = 1;
+       /** @todo: The port interrupt occurs while in device
+         * mode. Added code to CIL to clear the interrupt for now!
+         */
+       gintmsk_common.b.portintr = 1;
+
+       gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+       gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+       gahbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
+
+#ifdef DEBUG
+       /* if any common interrupts set */
+       if (gintsts.d32 & gintmsk_common.d32) {
+               DWC_DEBUGPL(DBG_ANY, "gintsts=%08x  gintmsk=%08x\n",
+                           gintsts.d32, gintmsk.d32);
+       }
+#endif
+       if (gahbcfg.b.glblintrmsk)      
+               return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32);
+       else
+               return 0;
+
+}
+
+/* MACRO for clearing interupt bits in GPWRDN register */
+#define CLEAR_GPWRDN_INTR(__core_if,__intr) \
+do { \
+               gpwrdn_data_t gpwrdn = {.d32=0}; \
+               gpwrdn.b.__intr = 1; \
+               DWC_MODIFY_REG32(&__core_if->core_global_regs->gpwrdn, \
+               0, gpwrdn.d32); \
+} while (0)
+
+/**
+ * Common interrupt handler.
+ *
+ * The common interrupts are those that occur in both Host and Device mode.
+ * This handler handles the following interrupts:
+ * - Mode Mismatch Interrupt
+ * - Disconnect Interrupt
+ * - OTG Interrupt
+ * - Connector ID Status Change Interrupt
+ * - Session Request Interrupt.
+ * - Resume / Remote Wakeup Detected Interrupt.
+ * - LPM Transaction Received Interrupt
+ * - ADP Transaction Received Interrupt
+ *
+ */
+int32_t dwc_otg_handle_common_intr(void *dev)
+{
+       int retval = 0;
+       gintsts_data_t gintsts;
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       dwc_otg_device_t *otg_dev = dev;
+       dwc_otg_core_if_t *core_if = otg_dev->core_if;
+       gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+       if (dwc_otg_is_device_mode(core_if))
+               core_if->frame_num = dwc_otg_get_frame_number(core_if);
+               
+       if (core_if->lock)
+               DWC_SPINLOCK(core_if->lock);
+
+       if (core_if->power_down == 3 && core_if->xhib == 1) {
+               DWC_DEBUGPL(DBG_ANY, "Exiting from xHIB state\n");
+               retval |= dwc_otg_handle_xhib_exit_intr(core_if);
+               core_if->xhib = 2;
+               if (core_if->lock)
+                       DWC_SPINUNLOCK(core_if->lock);
+
+               return retval;
+       }
+
+       if (core_if->hibernation_suspend <= 0) {
+               gintsts.d32 = dwc_otg_read_common_intr(core_if);
+
+               if (gintsts.b.modemismatch) {
+                       retval |= dwc_otg_handle_mode_mismatch_intr(core_if);
+               }
+               if (gintsts.b.otgintr) {
+                       retval |= dwc_otg_handle_otg_intr(core_if);
+               }
+               if (gintsts.b.conidstschng) {
+                       retval |=
+                           dwc_otg_handle_conn_id_status_change_intr(core_if);
+               }
+               if (gintsts.b.disconnect) {
+                       retval |= dwc_otg_handle_disconnect_intr(core_if);
+               }
+               if (gintsts.b.sessreqintr) {
+                       retval |= dwc_otg_handle_session_req_intr(core_if);
+               }
+               if (gintsts.b.wkupintr) {
+                       retval |= dwc_otg_handle_wakeup_detected_intr(core_if);
+               }
+               if (gintsts.b.usbsuspend) {
+                       retval |= dwc_otg_handle_usb_suspend_intr(core_if);
+               }
+#ifdef CONFIG_USB_DWC_OTG_LPM
+               if (gintsts.b.lpmtranrcvd) {
+                       retval |= dwc_otg_handle_lpm_intr(core_if);
+               }
+#endif
+               if (gintsts.b.restoredone) {
+                       gintsts.d32 = 0;
+                       if (core_if->power_down == 2)
+                               core_if->hibernation_suspend = -1;
+                       else if (core_if->power_down == 3 && core_if->xhib == 2) {
+                               gpwrdn_data_t gpwrdn = {.d32 = 0 };
+                               pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                               dctl_data_t dctl = {.d32 = 0 };
+
+                               DWC_WRITE_REG32(&core_if->core_global_regs->
+                                               gintsts, 0xFFFFFFFF);
+
+                               DWC_DEBUGPL(DBG_ANY,
+                                           "RESTORE DONE generated\n");
+
+                               gpwrdn.b.restore = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+                               dwc_udelay(10);
+
+                               pcgcctl.b.rstpdwnmodule = 1;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+
+                               DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, core_if->gr_backup->gusbcfg_local);
+                               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, core_if->dr_backup->dcfg);
+                               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, core_if->dr_backup->dctl);
+                               dwc_udelay(50);
+
+                               dctl.b.pwronprgdone = 1;
+                               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+                               dwc_udelay(10);
+
+                               dwc_otg_restore_global_regs(core_if);
+                               dwc_otg_restore_dev_regs(core_if, 0);
+
+                               dctl.d32 = 0;
+                               dctl.b.pwronprgdone = 1;
+                               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
+                               dwc_udelay(10);
+
+                               pcgcctl.d32 = 0;
+                               pcgcctl.b.enbl_extnd_hiber = 1;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+
+                               /* The core will be in ON STATE */
+                               core_if->lx_state = DWC_OTG_L0;
+                               core_if->xhib = 0;
+
+                               DWC_SPINUNLOCK(core_if->lock);
+                               if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+                                       core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+                               }
+                               DWC_SPINLOCK(core_if->lock);
+
+                       }
+
+                       gintsts.b.restoredone = 1;
+                       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts,gintsts.d32);
+                       DWC_PRINTF(" --Restore done interrupt received-- \n");
+                       retval |= 1;
+               }
+               if (gintsts.b.portintr && dwc_otg_is_device_mode(core_if)) {
+                       /* The port interrupt occurs while in device mode with HPRT0
+                        * Port Enable/Disable.
+                        */
+                       gintsts.d32 = 0;
+                       gintsts.b.portintr = 1;
+                       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts,gintsts.d32);
+                       retval |= 1;
+
+               }
+       } else {
+               DWC_DEBUGPL(DBG_ANY, "gpwrdn=%08x\n", gpwrdn.d32);
+
+               if (gpwrdn.b.disconn_det && gpwrdn.b.disconn_det_msk) {
+                       CLEAR_GPWRDN_INTR(core_if, disconn_det);
+                       if (gpwrdn.b.linestate == 0) {
+                               dwc_otg_handle_pwrdn_disconnect_intr(core_if);
+                       } else {
+                               DWC_PRINTF("Disconnect detected while linestate is not 0\n");
+                       }
+
+                       retval |= 1;
+               }
+               if (gpwrdn.b.lnstschng && gpwrdn.b.lnstchng_msk) {
+                       CLEAR_GPWRDN_INTR(core_if, lnstschng);
+                       /* remote wakeup from hibernation */
+                       if (gpwrdn.b.linestate == 2 || gpwrdn.b.linestate == 1) {
+                               dwc_otg_handle_pwrdn_wakeup_detected_intr(core_if);
+                       } else {
+                               DWC_PRINTF("gpwrdn.linestate = %d\n", gpwrdn.b.linestate);
+                       }
+                       retval |= 1;
+               }
+               if (gpwrdn.b.rst_det && gpwrdn.b.rst_det_msk) {
+                       CLEAR_GPWRDN_INTR(core_if, rst_det);
+                       if (gpwrdn.b.linestate == 0) {
+                               DWC_PRINTF("Reset detected\n");
+                               retval |= dwc_otg_device_hibernation_restore(core_if, 0, 1);
+                       }
+               }
+               if (gpwrdn.b.srp_det && gpwrdn.b.srp_det_msk) {
+                       CLEAR_GPWRDN_INTR(core_if, srp_det);
+                       dwc_otg_handle_pwrdn_srp_intr(core_if);
+                       retval |= 1;
+               }
+       }
+       /* Handle ADP interrupt here */
+       if (gpwrdn.b.adp_int) {
+               DWC_PRINTF("ADP interrupt\n");
+               CLEAR_GPWRDN_INTR(core_if, adp_int);
+               dwc_otg_adp_handle_intr(core_if);
+               retval |= 1;
+       }
+       if (gpwrdn.b.sts_chngint && gpwrdn.b.sts_chngint_msk) {
+               DWC_PRINTF("STS CHNG interrupt asserted\n");
+               CLEAR_GPWRDN_INTR(core_if, sts_chngint);
+               dwc_otg_handle_pwrdn_stschng_intr(otg_dev);
+
+               retval |= 1;
+       }
+       if (core_if->lock)
+               DWC_SPINUNLOCK(core_if->lock);
+
+       return retval;
+}
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_core_if.h b/drivers/usb/host/dwc_otg/dwc_otg_core_if.h
new file mode 100644
index 0000000..10b68c4
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_core_if.h
@@ -0,0 +1,705 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_core_if.h $
+ * $Revision: #13 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#if !defined(__DWC_CORE_IF_H__)
+#define __DWC_CORE_IF_H__
+
+#include "dwc_os.h"
+
+/** @file
+ * This file defines DWC_OTG Core API
+ */
+
+struct dwc_otg_core_if;
+typedef struct dwc_otg_core_if dwc_otg_core_if_t;
+
+/** Maximum number of Periodic FIFOs */
+#define MAX_PERIO_FIFOS 15
+/** Maximum number of Periodic FIFOs */
+#define MAX_TX_FIFOS 15
+
+/** Maximum number of Endpoints/HostChannels */
+#define MAX_EPS_CHANNELS 16
+
+extern dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t * _reg_base_addr);
+extern void dwc_otg_core_init(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_cil_remove(dwc_otg_core_if_t * _core_if);
+
+extern void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * _core_if);
+
+extern uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t * _core_if);
+extern uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t * _core_if);
+
+extern uint8_t dwc_otg_is_dma_enable(dwc_otg_core_if_t * core_if);
+
+/** This function should be called on every hardware interrupt. */
+extern int32_t dwc_otg_handle_common_intr(void *otg_dev);
+
+/** @name OTG Core Parameters */
+/** @{ */
+
+/**
+ * Specifies the OTG capabilities. The driver will automatically
+ * detect the value for this parameter if none is specified.
+ * 0 - HNP and SRP capable (default)
+ * 1 - SRP Only capable
+ * 2 - No HNP/SRP capable
+ */
+extern int dwc_otg_set_param_otg_cap(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_otg_cap(dwc_otg_core_if_t * core_if);
+#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0
+#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1
+#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
+#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE
+
+extern int dwc_otg_set_param_opt(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_opt(dwc_otg_core_if_t * core_if);
+#define dwc_param_opt_default 1
+
+/**
+ * Specifies whether to use slave or DMA mode for accessing the data
+ * FIFOs. The driver will automatically detect the value for this
+ * parameter if none is specified.
+ * 0 - Slave
+ * 1 - DMA (default, if available)
+ */
+extern int dwc_otg_set_param_dma_enable(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_dma_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_dma_enable_default 1
+
+/**
+ * When DMA mode is enabled specifies whether to use
+ * address DMA or DMA Descritor mode for accessing the data
+ * FIFOs in device mode. The driver will automatically detect
+ * the value for this parameter if none is specified.
+ * 0 - address DMA
+ * 1 - DMA Descriptor(default, if available)
+ */
+extern int dwc_otg_set_param_dma_desc_enable(dwc_otg_core_if_t * core_if,
+                                            int32_t val);
+extern int32_t dwc_otg_get_param_dma_desc_enable(dwc_otg_core_if_t * core_if);
+//#define dwc_param_dma_desc_enable_default 1
+#define dwc_param_dma_desc_enable_default 0 // Broadcom BCM2708
+
+/** The DMA Burst size (applicable only for External DMA
+ * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ */
+extern int dwc_otg_set_param_dma_burst_size(dwc_otg_core_if_t * core_if,
+                                           int32_t val);
+extern int32_t dwc_otg_get_param_dma_burst_size(dwc_otg_core_if_t * core_if);
+#define dwc_param_dma_burst_size_default 32
+
+/**
+ * Specifies the maximum speed of operation in host and device mode.
+ * The actual speed depends on the speed of the attached device and
+ * the value of phy_type. The actual speed depends on the speed of the
+ * attached device.
+ * 0 - High Speed (default)
+ * 1 - Full Speed
+ */
+extern int dwc_otg_set_param_speed(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_speed(dwc_otg_core_if_t * core_if);
+#define dwc_param_speed_default 0
+#define DWC_SPEED_PARAM_HIGH 0
+#define DWC_SPEED_PARAM_FULL 1
+
+/** Specifies whether low power mode is supported when attached
+ *     to a Full Speed or Low Speed device in host mode.
+ * 0 - Don't support low power mode (default)
+ * 1 - Support low power mode
+ */
+extern int dwc_otg_set_param_host_support_fs_ls_low_power(dwc_otg_core_if_t *
+                                                         core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_support_fs_ls_low_power(dwc_otg_core_if_t
+                                                             * core_if);
+#define dwc_param_host_support_fs_ls_low_power_default 0
+
+/** Specifies the PHY clock rate in low power mode when connected to a
+ * Low Speed device in host mode. This parameter is applicable only if
+ * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
+ * then defaults to 6 MHZ otherwise 48 MHZ.
+ *
+ * 0 - 48 MHz
+ * 1 - 6 MHz
+ */
+extern int dwc_otg_set_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t *
+                                                      core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t *
+                                                          core_if);
+#define dwc_param_host_ls_low_power_phy_clk_default 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
+
+/**
+ * 0 - Use cC FIFO size parameters
+ * 1 - Allow dynamic FIFO sizing (default)
+ */
+extern int dwc_otg_set_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if,
+                                                int32_t val);
+extern int32_t dwc_otg_get_param_enable_dynamic_fifo(dwc_otg_core_if_t *
+                                                    core_if);
+#define dwc_param_enable_dynamic_fifo_default 1
+
+/** Total number of 4-byte words in the data FIFO memory. This
+ * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
+ * Tx FIFOs.
+ * 32 to 32768 (default 8192)
+ * Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ */
+extern int dwc_otg_set_param_data_fifo_size(dwc_otg_core_if_t * core_if,
+                                           int32_t val);
+extern int32_t dwc_otg_get_param_data_fifo_size(dwc_otg_core_if_t * core_if);
+//#define dwc_param_data_fifo_size_default 8192
+#define dwc_param_data_fifo_size_default 0xFF0 // Broadcom BCM2708
+
+/** Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1064)
+ */
+extern int dwc_otg_set_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if,
+                                             int32_t val);
+extern int32_t dwc_otg_get_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if);
+#define dwc_param_dev_rx_fifo_size_default 1064
+
+/** Number of 4-byte words in the non-periodic Tx FIFO in device mode
+ * when dynamic FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t *
+                                                    core_if, int32_t val);
+extern int32_t dwc_otg_get_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t *
+                                                        core_if);
+#define dwc_param_dev_nperio_tx_fifo_size_default 1024
+
+/** Number of 4-byte words in each of the periodic Tx FIFOs in device
+ * mode when dynamic FIFO sizing is enabled.
+ * 4 to 768 (default 256)
+ */
+extern int dwc_otg_set_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                                   int32_t val, int fifo_num);
+extern int32_t dwc_otg_get_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t *
+                                                       core_if, int fifo_num);
+#define dwc_param_dev_perio_tx_fifo_size_default 256
+
+/** Number of 4-byte words in the Rx FIFO in host mode when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if,
+                                              int32_t val);
+extern int32_t dwc_otg_get_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if);
+//#define dwc_param_host_rx_fifo_size_default 1024
+#define dwc_param_host_rx_fifo_size_default 774 // Broadcom BCM2708
+
+/** Number of 4-byte words in the non-periodic Tx FIFO in host mode
+ * when Dynamic FIFO sizing is enabled in the core.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t *
+                                                     core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t *
+                                                         core_if);
+//#define dwc_param_host_nperio_tx_fifo_size_default 1024
+#define dwc_param_host_nperio_tx_fifo_size_default 0x100 // Broadcom BCM2708
+
+/** Number of 4-byte words in the host periodic Tx FIFO when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_host_perio_tx_fifo_size(dwc_otg_core_if_t *
+                                                    core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_perio_tx_fifo_size(dwc_otg_core_if_t *
+                                                        core_if);
+//#define dwc_param_host_perio_tx_fifo_size_default 1024
+#define dwc_param_host_perio_tx_fifo_size_default 0x200 // Broadcom BCM2708
+
+/** The maximum transfer size supported in bytes.
+ * 2047 to 65,535  (default 65,535)
+ */
+extern int dwc_otg_set_param_max_transfer_size(dwc_otg_core_if_t * core_if,
+                                              int32_t val);
+extern int32_t dwc_otg_get_param_max_transfer_size(dwc_otg_core_if_t * core_if);
+#define dwc_param_max_transfer_size_default 65535
+
+/** The maximum number of packets in a transfer.
+ * 15 to 511  (default 511)
+ */
+extern int dwc_otg_set_param_max_packet_count(dwc_otg_core_if_t * core_if,
+                                             int32_t val);
+extern int32_t dwc_otg_get_param_max_packet_count(dwc_otg_core_if_t * core_if);
+#define dwc_param_max_packet_count_default 511
+
+/** The number of host channel registers to use.
+ * 1 to 16 (default 12)
+ * Note: The FPGA configuration supports a maximum of 12 host channels.
+ */
+extern int dwc_otg_set_param_host_channels(dwc_otg_core_if_t * core_if,
+                                          int32_t val);
+extern int32_t dwc_otg_get_param_host_channels(dwc_otg_core_if_t * core_if);
+//#define dwc_param_host_channels_default 12
+#define dwc_param_host_channels_default 8 // Broadcom BCM2708
+
+/** The number of endpoints in addition to EP0 available for device
+ * mode operations.
+ * 1 to 15 (default 6 IN and OUT)
+ * Note: The FPGA configuration supports a maximum of 6 IN and OUT
+ * endpoints in addition to EP0.
+ */
+extern int dwc_otg_set_param_dev_endpoints(dwc_otg_core_if_t * core_if,
+                                          int32_t val);
+extern int32_t dwc_otg_get_param_dev_endpoints(dwc_otg_core_if_t * core_if);
+#define dwc_param_dev_endpoints_default 6
+
+/**
+ * Specifies the type of PHY interface to use. By default, the driver
+ * will automatically detect the phy_type.
+ *
+ * 0 - Full Speed PHY
+ * 1 - UTMI+ (default)
+ * 2 - ULPI
+ */
+extern int dwc_otg_set_param_phy_type(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_phy_type(dwc_otg_core_if_t * core_if);
+#define DWC_PHY_TYPE_PARAM_FS 0
+#define DWC_PHY_TYPE_PARAM_UTMI 1
+#define DWC_PHY_TYPE_PARAM_ULPI 2
+#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI
+
+/**
+ * Specifies the UTMI+ Data Width. This parameter is
+ * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
+ * PHY_TYPE, this parameter indicates the data width between
+ * the MAC and the ULPI Wrapper.) Also, this parameter is
+ * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
+ * to "8 and 16 bits", meaning that the core has been
+ * configured to work at either data path width.
+ *
+ * 8 or 16 bits (default 16)
+ */
+extern int dwc_otg_set_param_phy_utmi_width(dwc_otg_core_if_t * core_if,
+                                           int32_t val);
+extern int32_t dwc_otg_get_param_phy_utmi_width(dwc_otg_core_if_t * core_if);
+//#define dwc_param_phy_utmi_width_default 16
+#define dwc_param_phy_utmi_width_default 8 // Broadcom BCM2708 
+
+/**
+ * Specifies whether the ULPI operates at double or single
+ * data rate. This parameter is only applicable if PHY_TYPE is
+ * ULPI.
+ *
+ * 0 - single data rate ULPI interface with 8 bit wide data
+ * bus (default)
+ * 1 - double data rate ULPI interface with 4 bit wide data
+ * bus
+ */
+extern int dwc_otg_set_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if,
+                                         int32_t val);
+extern int32_t dwc_otg_get_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if);
+#define dwc_param_phy_ulpi_ddr_default 0
+
+/**
+ * Specifies whether to use the internal or external supply to
+ * drive the vbus with a ULPI phy.
+ */
+extern int dwc_otg_set_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if,
+                                              int32_t val);
+extern int32_t dwc_otg_get_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if);
+#define DWC_PHY_ULPI_INTERNAL_VBUS 0
+#define DWC_PHY_ULPI_EXTERNAL_VBUS 1
+#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS
+
+/**
+ * Specifies whether to use the I2Cinterface for full speed PHY. This
+ * parameter is only applicable if PHY_TYPE is FS.
+ * 0 - No (default)
+ * 1 - Yes
+ */
+extern int dwc_otg_set_param_i2c_enable(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_i2c_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_i2c_enable_default 0
+
+extern int dwc_otg_set_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if);
+#define dwc_param_ulpi_fs_ls_default 0
+
+extern int dwc_otg_set_param_ts_dline(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_ts_dline(dwc_otg_core_if_t * core_if);
+#define dwc_param_ts_dline_default 0
+
+/**
+ * Specifies whether dedicated transmit FIFOs are
+ * enabled for non periodic IN endpoints in device mode
+ * 0 - No
+ * 1 - Yes
+ */
+extern int dwc_otg_set_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if,
+                                                int32_t val);
+extern int32_t dwc_otg_get_param_en_multiple_tx_fifo(dwc_otg_core_if_t *
+                                                    core_if);
+#define dwc_param_en_multiple_tx_fifo_default 1
+
+/** Number of 4-byte words in each of the Tx FIFOs in device
+ * mode when dynamic FIFO sizing is enabled.
+ * 4 to 768 (default 256)
+ */
+extern int dwc_otg_set_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                             int fifo_num, int32_t val);
+extern int32_t dwc_otg_get_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
+                                                 int fifo_num);
+#define dwc_param_dev_tx_fifo_size_default 768
+
+/** Thresholding enable flag-
+ * bit 0 - enable non-ISO Tx thresholding
+ * bit 1 - enable ISO Tx thresholding
+ * bit 2 - enable Rx thresholding
+ */
+extern int dwc_otg_set_param_thr_ctl(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_thr_ctl(dwc_otg_core_if_t * core_if, int fifo_num);
+#define dwc_param_thr_ctl_default 0
+
+/** Thresholding length for Tx
+ * FIFOs in 32 bit DWORDs
+ */
+extern int dwc_otg_set_param_tx_thr_length(dwc_otg_core_if_t * core_if,
+                                          int32_t val);
+extern int32_t dwc_otg_get_tx_thr_length(dwc_otg_core_if_t * core_if);
+#define dwc_param_tx_thr_length_default 64
+
+/** Thresholding length for Rx
+ *     FIFOs in 32 bit DWORDs
+ */
+extern int dwc_otg_set_param_rx_thr_length(dwc_otg_core_if_t * core_if,
+                                          int32_t val);
+extern int32_t dwc_otg_get_rx_thr_length(dwc_otg_core_if_t * core_if);
+#define dwc_param_rx_thr_length_default 64
+
+/**
+ * Specifies whether LPM (Link Power Management) support is enabled
+ */
+extern int dwc_otg_set_param_lpm_enable(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_lpm_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_lpm_enable_default 1
+
+/**
+ * Specifies whether PTI enhancement is enabled
+ */
+extern int dwc_otg_set_param_pti_enable(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_pti_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_pti_enable_default 0
+
+/**
+ * Specifies whether MPI enhancement is enabled
+ */
+extern int dwc_otg_set_param_mpi_enable(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_mpi_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_mpi_enable_default 0
+
+/**
+ * Specifies whether ADP capability is enabled
+ */
+extern int dwc_otg_set_param_adp_enable(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_adp_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_adp_enable_default 0
+
+/**
+ * Specifies whether IC_USB capability is enabled
+ */
+
+extern int dwc_otg_set_param_ic_usb_cap(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_ic_usb_cap(dwc_otg_core_if_t * core_if);
+#define dwc_param_ic_usb_cap_default 0
+
+extern int dwc_otg_set_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if,
+                                          int32_t val);
+extern int32_t dwc_otg_get_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if);
+#define dwc_param_ahb_thr_ratio_default 0
+
+extern int dwc_otg_set_param_power_down(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_power_down(dwc_otg_core_if_t * core_if);
+#define dwc_param_power_down_default 0
+
+extern int dwc_otg_set_param_reload_ctl(dwc_otg_core_if_t * core_if,
+                                       int32_t val);
+extern int32_t dwc_otg_get_param_reload_ctl(dwc_otg_core_if_t * core_if);
+#define dwc_param_reload_ctl_default 0
+
+extern int dwc_otg_set_param_dev_out_nak(dwc_otg_core_if_t * core_if,
+                                                                               int32_t val);
+extern int32_t dwc_otg_get_param_dev_out_nak(dwc_otg_core_if_t * core_if);
+#define dwc_param_dev_out_nak_default 0
+
+extern int dwc_otg_set_param_cont_on_bna(dwc_otg_core_if_t * core_if,
+                                                                                int32_t val);
+extern int32_t dwc_otg_get_param_cont_on_bna(dwc_otg_core_if_t * core_if);
+#define dwc_param_cont_on_bna_default 0
+
+extern int dwc_otg_set_param_ahb_single(dwc_otg_core_if_t * core_if,
+                                                                                int32_t val);
+extern int32_t dwc_otg_get_param_ahb_single(dwc_otg_core_if_t * core_if);
+#define dwc_param_ahb_single_default 0
+
+extern int dwc_otg_set_param_otg_ver(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_otg_ver(dwc_otg_core_if_t * core_if);
+#define dwc_param_otg_ver_default 0
+
+/** @} */
+
+/** @name Access to registers and bit-fields */
+
+/**
+ * Dump core registers and SPRAM
+ */
+extern void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_dump_spram(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_dump_host_registers(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_dump_global_registers(dwc_otg_core_if_t * _core_if);
+
+/**
+ * Get host negotiation status.
+ */
+extern uint32_t dwc_otg_get_hnpstatus(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get srp status
+ */
+extern uint32_t dwc_otg_get_srpstatus(dwc_otg_core_if_t * core_if);
+
+/**
+ * Set hnpreq bit in the GOTGCTL register.
+ */
+extern void dwc_otg_set_hnpreq(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get Content of SNPSID register.
+ */
+extern uint32_t dwc_otg_get_gsnpsid(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get current mode.
+ * Returns 0 if in device mode, and 1 if in host mode.
+ */
+extern uint32_t dwc_otg_get_mode(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of hnpcapable field in the GUSBCFG register
+ */
+extern uint32_t dwc_otg_get_hnpcapable(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of hnpcapable field in the GUSBCFG register
+ */
+extern void dwc_otg_set_hnpcapable(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of srpcapable field in the GUSBCFG register
+ */
+extern uint32_t dwc_otg_get_srpcapable(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of srpcapable field in the GUSBCFG register
+ */
+extern void dwc_otg_set_srpcapable(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of devspeed field in the DCFG register
+ */
+extern uint32_t dwc_otg_get_devspeed(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of devspeed field in the DCFG register
+ */
+extern void dwc_otg_set_devspeed(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get the value of busconnected field from the HPRT0 register
+ */
+extern uint32_t dwc_otg_get_busconnected(dwc_otg_core_if_t * core_if);
+
+/**
+ * Gets the device enumeration Speed.
+ */
+extern uint32_t dwc_otg_get_enumspeed(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of prtpwr field from the HPRT0 register
+ */
+extern uint32_t dwc_otg_get_prtpower(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of flag indicating core state - hibernated or not
+ */
+extern uint32_t dwc_otg_get_core_state(dwc_otg_core_if_t * core_if);
+
+/**
+ * Set value of prtpwr field from the HPRT0 register
+ */
+extern void dwc_otg_set_prtpower(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of prtsusp field from the HPRT0 regsiter
+ */
+extern uint32_t dwc_otg_get_prtsuspend(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of prtpwr field from the HPRT0 register
+ */
+extern void dwc_otg_set_prtsuspend(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of ModeChTimEn field from the HCFG regsiter
+ */
+extern uint32_t dwc_otg_get_mode_ch_tim(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of ModeChTimEn field from the HCFG regsiter
+ */
+extern void dwc_otg_set_mode_ch_tim(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of Fram Interval field from the HFIR regsiter
+ */
+extern uint32_t dwc_otg_get_fr_interval(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of Frame Interval field from the HFIR regsiter
+ */
+extern void dwc_otg_set_fr_interval(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Set value of prtres field from the HPRT0 register
+ *FIXME Remove?
+ */
+extern void dwc_otg_set_prtresume(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of rmtwkupsig bit in DCTL register
+ */
+extern uint32_t dwc_otg_get_remotewakesig(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of prt_sleep_sts field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_lpm_portsleepstatus(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of rem_wkup_en field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_lpm_remotewakeenabled(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of appl_resp field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_lpmresponse(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of appl_resp field from the GLPMCFG register
+ */
+extern void dwc_otg_set_lpmresponse(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of hsic_connect field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_hsic_connect(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of hsic_connect field from the GLPMCFG register
+ */
+extern void dwc_otg_set_hsic_connect(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of inv_sel_hsic field from the GLPMCFG register.
+ */
+extern uint32_t dwc_otg_get_inv_sel_hsic(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of inv_sel_hsic field from the GLPMFG register.
+ */
+extern void dwc_otg_set_inv_sel_hsic(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/*
+ * Some functions for accessing registers
+ */
+
+/**
+ *  GOTGCTL register
+ */
+extern uint32_t dwc_otg_get_gotgctl(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gotgctl(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GUSBCFG register
+ */
+extern uint32_t dwc_otg_get_gusbcfg(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gusbcfg(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GRXFSIZ register
+ */
+extern uint32_t dwc_otg_get_grxfsiz(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_grxfsiz(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GNPTXFSIZ register
+ */
+extern uint32_t dwc_otg_get_gnptxfsiz(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gnptxfsiz(dwc_otg_core_if_t * core_if, uint32_t val);
+
+extern uint32_t dwc_otg_get_gpvndctl(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gpvndctl(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GGPIO register
+ */
+extern uint32_t dwc_otg_get_ggpio(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_ggpio(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GUID register
+ */
+extern uint32_t dwc_otg_get_guid(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_guid(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * HPRT0 register
+ */
+extern uint32_t dwc_otg_get_hprt0(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_hprt0(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GHPTXFSIZE
+ */
+extern uint32_t dwc_otg_get_hptxfsiz(dwc_otg_core_if_t * core_if);
+
+/** @} */
+
+#endif                         /* __DWC_CORE_IF_H__ */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_dbg.h b/drivers/usb/host/dwc_otg/dwc_otg_dbg.h
new file mode 100644
index 0000000..8681aa9
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_dbg.h
@@ -0,0 +1,116 @@
+/* ==========================================================================
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_DBG_H__
+#define __DWC_OTG_DBG_H__
+
+/** @file
+ * This file defines debug levels.
+ * Debugging support vanishes in non-debug builds.  
+ */
+
+/**
+ * The Debug Level bit-mask variable.
+ */
+extern uint32_t g_dbg_lvl;
+/**
+ * Set the Debug Level variable.
+ */
+static inline uint32_t SET_DEBUG_LEVEL(const uint32_t new)
+{
+       uint32_t old = g_dbg_lvl;
+       g_dbg_lvl = new;
+       return old;
+}
+
+/** When debug level has the DBG_CIL bit set, display CIL Debug messages. */
+#define DBG_CIL                (0x2)
+/** When debug level has the DBG_CILV bit set, display CIL Verbose debug
+ * messages */
+#define DBG_CILV       (0x20)
+/**  When debug level has the DBG_PCD bit set, display PCD (Device) debug
+ *  messages */
+#define DBG_PCD                (0x4)
+/** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug
+ * messages */
+#define DBG_PCDV       (0x40)
+/** When debug level has the DBG_HCD bit set, display Host debug messages */
+#define DBG_HCD                (0x8)
+/** When debug level has the DBG_HCDV bit set, display Verbose Host debug
+ * messages */
+#define DBG_HCDV       (0x80)
+/** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host
+ *  mode. */
+#define DBG_HCD_URB    (0x800)
+/** When debug level has the DBG_HCDI bit set, display host interrupt
+ *  messages. */
+#define DBG_HCDI       (0x1000)
+
+/** When debug level has any bit set, display debug messages */
+#define DBG_ANY                (0xFF)
+
+/** All debug messages off */
+#define DBG_OFF                0
+
+/** Prefix string for DWC_DEBUG print macros. */
+#define USB_DWC "DWC_otg: "
+
+/** 
+ * Print a debug message when the Global debug level variable contains
+ * the bit defined in <code>lvl</code>.
+ *
+ * @param[in] lvl - Debug level, use one of the DBG_ constants above.
+ * @param[in] x - like printf
+ *
+ *    Example:<p>
+ * <code>
+ *      DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr);
+ * </code>
+ * <br>
+ * results in:<br> 
+ * <code>
+ * usb-DWC_otg: dwc_otg_cil_init(ca867000)
+ * </code>
+ */
+#ifdef DEBUG
+
+# define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)__DWC_DEBUG(USB_DWC x ); }while(0)
+# define DWC_DEBUGP(x...)      DWC_DEBUGPL(DBG_ANY, x )
+
+# define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl)
+
+#else
+
+# define DWC_DEBUGPL(lvl, x...) do{}while(0)
+# define DWC_DEBUGP(x...)
+
+# define CHK_DEBUG_LEVEL(level) (0)
+
+#endif /*DEBUG*/
+#endif
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_driver.c b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
new file mode 100644
index 0000000..e7f99e1
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
@@ -0,0 +1,1700 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.c $
+ * $Revision: #92 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ * The dwc_otg_driver module provides the initialization and cleanup entry
+ * points for the DWC_otg driver. This module will be dynamically installed
+ * after Linux is booted using the insmod command. When the module is
+ * installed, the dwc_otg_driver_init function is called. When the module is
+ * removed (using rmmod), the dwc_otg_driver_cleanup function is called.
+ *
+ * This module also defines a data structure for the dwc_otg_driver, which is
+ * used in conjunction with the standard ARM lm_device structure. These
+ * structures allow the OTG driver to comply with the standard Linux driver
+ * model in which devices and drivers are registered with a bus driver. This
+ * has the benefit that Linux can expose attributes of the driver and device
+ * in its special sysfs file system. Users can then read or write files in
+ * this file system to perform diagnostics on the driver components or the
+ * device.
+ */
+
+#include "dwc_otg_os_dep.h"
+#include "dwc_os.h"
+#include "dwc_otg_dbg.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_core_if.h"
+#include "dwc_otg_pcd_if.h"
+#include "dwc_otg_hcd_if.h"
+
+#define DWC_DRIVER_VERSION     "3.00a 10-AUG-2012"
+#define DWC_DRIVER_DESC                "HS OTG USB Controller driver"
+
+bool microframe_schedule=true;
+
+static const char dwc_driver_name[] = "dwc_otg";
+
+extern int pcd_init(
+#ifdef LM_INTERFACE
+                          struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+                          struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *dev
+#endif
+    );
+extern int hcd_init(
+#ifdef LM_INTERFACE
+                          struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+                          struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *dev
+#endif
+    );
+
+extern int pcd_remove(
+#ifdef LM_INTERFACE
+                            struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+                            struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *_dev
+#endif
+    );
+
+extern void hcd_remove(
+#ifdef LM_INTERFACE
+                             struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+                             struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *_dev
+#endif
+    );
+
+extern void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host);
+
+/*-------------------------------------------------------------------------*/
+/* Encapsulate the module parameter settings */
+
+struct dwc_otg_driver_module_params {
+       int32_t opt;
+       int32_t otg_cap;
+       int32_t dma_enable;
+       int32_t dma_desc_enable;
+       int32_t dma_burst_size;
+       int32_t speed;
+       int32_t host_support_fs_ls_low_power;
+       int32_t host_ls_low_power_phy_clk;
+       int32_t enable_dynamic_fifo;
+       int32_t data_fifo_size;
+       int32_t dev_rx_fifo_size;
+       int32_t dev_nperio_tx_fifo_size;
+       uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
+       int32_t host_rx_fifo_size;
+       int32_t host_nperio_tx_fifo_size;
+       int32_t host_perio_tx_fifo_size;
+       int32_t max_transfer_size;
+       int32_t max_packet_count;
+       int32_t host_channels;
+       int32_t dev_endpoints;
+       int32_t phy_type;
+       int32_t phy_utmi_width;
+       int32_t phy_ulpi_ddr;
+       int32_t phy_ulpi_ext_vbus;
+       int32_t i2c_enable;
+       int32_t ulpi_fs_ls;
+       int32_t ts_dline;
+       int32_t en_multiple_tx_fifo;
+       uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
+       uint32_t thr_ctl;
+       uint32_t tx_thr_length;
+       uint32_t rx_thr_length;
+       int32_t pti_enable;
+       int32_t mpi_enable;
+       int32_t lpm_enable;
+       int32_t ic_usb_cap;
+       int32_t ahb_thr_ratio;
+       int32_t power_down;
+       int32_t reload_ctl;
+       int32_t dev_out_nak;
+       int32_t cont_on_bna;
+       int32_t ahb_single;
+       int32_t otg_ver;
+       int32_t adp_enable;
+};
+
+static struct dwc_otg_driver_module_params dwc_otg_module_params = {
+       .opt = -1,
+       .otg_cap = -1,
+       .dma_enable = -1,
+       .dma_desc_enable = -1,
+       .dma_burst_size = -1,
+       .speed = -1,
+       .host_support_fs_ls_low_power = -1,
+       .host_ls_low_power_phy_clk = -1,
+       .enable_dynamic_fifo = -1,
+       .data_fifo_size = -1,
+       .dev_rx_fifo_size = -1,
+       .dev_nperio_tx_fifo_size = -1,
+       .dev_perio_tx_fifo_size = {
+                                  /* dev_perio_tx_fifo_size_1 */
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1,
+                                  -1
+                                  /* 15 */
+                                  },
+       .host_rx_fifo_size = -1,
+       .host_nperio_tx_fifo_size = -1,
+       .host_perio_tx_fifo_size = -1,
+       .max_transfer_size = -1,
+       .max_packet_count = -1,
+       .host_channels = -1,
+       .dev_endpoints = -1,
+       .phy_type = -1,
+       .phy_utmi_width = -1,
+       .phy_ulpi_ddr = -1,
+       .phy_ulpi_ext_vbus = -1,
+       .i2c_enable = -1,
+       .ulpi_fs_ls = -1,
+       .ts_dline = -1,
+       .en_multiple_tx_fifo = -1,
+       .dev_tx_fifo_size = {
+                            /* dev_tx_fifo_size */
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1,
+                            -1
+                            /* 15 */
+                            },
+       .thr_ctl = -1,
+       .tx_thr_length = -1,
+       .rx_thr_length = -1,
+       .pti_enable = -1,
+       .mpi_enable = -1,
+       .lpm_enable = -1,
+       .ic_usb_cap = -1,
+       .ahb_thr_ratio = -1,
+       .power_down = -1,
+       .reload_ctl = -1,
+       .dev_out_nak = -1,
+       .cont_on_bna = -1,
+       .ahb_single = -1,
+       .otg_ver = -1,
+       .adp_enable = -1,
+};
+
+/**
+ * This function shows the Driver Version.
+ */
+static ssize_t version_show(struct device_driver *dev, char *buf)
+{
+       return snprintf(buf, sizeof(DWC_DRIVER_VERSION) + 2, "%s\n",
+                       DWC_DRIVER_VERSION);
+}
+
+static DRIVER_ATTR(version, S_IRUGO, version_show, NULL);
+
+/**
+ * Global Debug Level Mask.
+ */
+uint32_t g_dbg_lvl = 0;                /* OFF */
+
+/**
+ * This function shows the driver Debug Level.
+ */
+static ssize_t dbg_level_show(struct device_driver *drv, char *buf)
+{
+       return sprintf(buf, "0x%0x\n", g_dbg_lvl);
+}
+
+/**
+ * This function stores the driver Debug Level.
+ */
+static ssize_t dbg_level_store(struct device_driver *drv, const char *buf,
+                              size_t count)
+{
+       g_dbg_lvl = simple_strtoul(buf, NULL, 16);
+       return count;
+}
+
+static DRIVER_ATTR(debuglevel, S_IRUGO | S_IWUSR, dbg_level_show,
+                  dbg_level_store);
+
+/**
+ * This function is called during module intialization
+ * to pass module parameters to the DWC_OTG CORE.
+ */
+static int set_parameters(dwc_otg_core_if_t * core_if)
+{
+       int retval = 0;
+       int i;
+
+       if (dwc_otg_module_params.otg_cap != -1) {
+               retval +=
+                   dwc_otg_set_param_otg_cap(core_if,
+                                             dwc_otg_module_params.otg_cap);
+       }
+       if (dwc_otg_module_params.dma_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_dma_enable(core_if,
+                                                dwc_otg_module_params.
+                                                dma_enable);
+       }
+       if (dwc_otg_module_params.dma_desc_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_dma_desc_enable(core_if,
+                                                     dwc_otg_module_params.
+                                                     dma_desc_enable);
+       }
+       if (dwc_otg_module_params.opt != -1) {
+               retval +=
+                   dwc_otg_set_param_opt(core_if, dwc_otg_module_params.opt);
+       }
+       if (dwc_otg_module_params.dma_burst_size != -1) {
+               retval +=
+                   dwc_otg_set_param_dma_burst_size(core_if,
+                                                    dwc_otg_module_params.
+                                                    dma_burst_size);
+       }
+       if (dwc_otg_module_params.host_support_fs_ls_low_power != -1) {
+               retval +=
+                   dwc_otg_set_param_host_support_fs_ls_low_power(core_if,
+                                                                  dwc_otg_module_params.
+                                                                  host_support_fs_ls_low_power);
+       }
+       if (dwc_otg_module_params.enable_dynamic_fifo != -1) {
+               retval +=
+                   dwc_otg_set_param_enable_dynamic_fifo(core_if,
+                                                         dwc_otg_module_params.
+                                                         enable_dynamic_fifo);
+       }
+       if (dwc_otg_module_params.data_fifo_size != -1) {
+               retval +=
+                   dwc_otg_set_param_data_fifo_size(core_if,
+                                                    dwc_otg_module_params.
+                                                    data_fifo_size);
+       }
+       if (dwc_otg_module_params.dev_rx_fifo_size != -1) {
+               retval +=
+                   dwc_otg_set_param_dev_rx_fifo_size(core_if,
+                                                      dwc_otg_module_params.
+                                                      dev_rx_fifo_size);
+       }
+       if (dwc_otg_module_params.dev_nperio_tx_fifo_size != -1) {
+               retval +=
+                   dwc_otg_set_param_dev_nperio_tx_fifo_size(core_if,
+                                                             dwc_otg_module_params.
+                                                             dev_nperio_tx_fifo_size);
+       }
+       if (dwc_otg_module_params.host_rx_fifo_size != -1) {
+               retval +=
+                   dwc_otg_set_param_host_rx_fifo_size(core_if,
+                                                       dwc_otg_module_params.host_rx_fifo_size);
+       }
+       if (dwc_otg_module_params.host_nperio_tx_fifo_size != -1) {
+               retval +=
+                   dwc_otg_set_param_host_nperio_tx_fifo_size(core_if,
+                                                              dwc_otg_module_params.
+                                                              host_nperio_tx_fifo_size);
+       }
+       if (dwc_otg_module_params.host_perio_tx_fifo_size != -1) {
+               retval +=
+                   dwc_otg_set_param_host_perio_tx_fifo_size(core_if,
+                                                             dwc_otg_module_params.
+                                                             host_perio_tx_fifo_size);
+       }
+       if (dwc_otg_module_params.max_transfer_size != -1) {
+               retval +=
+                   dwc_otg_set_param_max_transfer_size(core_if,
+                                                       dwc_otg_module_params.
+                                                       max_transfer_size);
+       }
+       if (dwc_otg_module_params.max_packet_count != -1) {
+               retval +=
+                   dwc_otg_set_param_max_packet_count(core_if,
+                                                      dwc_otg_module_params.
+                                                      max_packet_count);
+       }
+       if (dwc_otg_module_params.host_channels != -1) {
+               retval +=
+                   dwc_otg_set_param_host_channels(core_if,
+                                                   dwc_otg_module_params.
+                                                   host_channels);
+       }
+       if (dwc_otg_module_params.dev_endpoints != -1) {
+               retval +=
+                   dwc_otg_set_param_dev_endpoints(core_if,
+                                                   dwc_otg_module_params.
+                                                   dev_endpoints);
+       }
+       if (dwc_otg_module_params.phy_type != -1) {
+               retval +=
+                   dwc_otg_set_param_phy_type(core_if,
+                                              dwc_otg_module_params.phy_type);
+       }
+       if (dwc_otg_module_params.speed != -1) {
+               retval +=
+                   dwc_otg_set_param_speed(core_if,
+                                           dwc_otg_module_params.speed);
+       }
+       if (dwc_otg_module_params.host_ls_low_power_phy_clk != -1) {
+               retval +=
+                   dwc_otg_set_param_host_ls_low_power_phy_clk(core_if,
+                                                               dwc_otg_module_params.
+                                                               host_ls_low_power_phy_clk);
+       }
+       if (dwc_otg_module_params.phy_ulpi_ddr != -1) {
+               retval +=
+                   dwc_otg_set_param_phy_ulpi_ddr(core_if,
+                                                  dwc_otg_module_params.
+                                                  phy_ulpi_ddr);
+       }
+       if (dwc_otg_module_params.phy_ulpi_ext_vbus != -1) {
+               retval +=
+                   dwc_otg_set_param_phy_ulpi_ext_vbus(core_if,
+                                                       dwc_otg_module_params.
+                                                       phy_ulpi_ext_vbus);
+       }
+       if (dwc_otg_module_params.phy_utmi_width != -1) {
+               retval +=
+                   dwc_otg_set_param_phy_utmi_width(core_if,
+                                                    dwc_otg_module_params.
+                                                    phy_utmi_width);
+       }
+       if (dwc_otg_module_params.ulpi_fs_ls != -1) {
+               retval +=
+                   dwc_otg_set_param_ulpi_fs_ls(core_if,
+                                                dwc_otg_module_params.ulpi_fs_ls);
+       }
+       if (dwc_otg_module_params.ts_dline != -1) {
+               retval +=
+                   dwc_otg_set_param_ts_dline(core_if,
+                                              dwc_otg_module_params.ts_dline);
+       }
+       if (dwc_otg_module_params.i2c_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_i2c_enable(core_if,
+                                                dwc_otg_module_params.
+                                                i2c_enable);
+       }
+       if (dwc_otg_module_params.en_multiple_tx_fifo != -1) {
+               retval +=
+                   dwc_otg_set_param_en_multiple_tx_fifo(core_if,
+                                                         dwc_otg_module_params.
+                                                         en_multiple_tx_fifo);
+       }
+       for (i = 0; i < 15; i++) {
+               if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] != -1) {
+                       retval +=
+                           dwc_otg_set_param_dev_perio_tx_fifo_size(core_if,
+                                                                    dwc_otg_module_params.
+                                                                    dev_perio_tx_fifo_size
+                                                                    [i], i);
+               }
+       }
+
+       for (i = 0; i < 15; i++) {
+               if (dwc_otg_module_params.dev_tx_fifo_size[i] != -1) {
+                       retval += dwc_otg_set_param_dev_tx_fifo_size(core_if,
+                                                                    dwc_otg_module_params.
+                                                                    dev_tx_fifo_size
+                                                                    [i], i);
+               }
+       }
+       if (dwc_otg_module_params.thr_ctl != -1) {
+               retval +=
+                   dwc_otg_set_param_thr_ctl(core_if,
+                                             dwc_otg_module_params.thr_ctl);
+       }
+       if (dwc_otg_module_params.mpi_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_mpi_enable(core_if,
+                                                dwc_otg_module_params.
+                                                mpi_enable);
+       }
+       if (dwc_otg_module_params.pti_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_pti_enable(core_if,
+                                                dwc_otg_module_params.
+                                                pti_enable);
+       }
+       if (dwc_otg_module_params.lpm_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_lpm_enable(core_if,
+                                                dwc_otg_module_params.
+                                                lpm_enable);
+       }
+       if (dwc_otg_module_params.ic_usb_cap != -1) {
+               retval +=
+                   dwc_otg_set_param_ic_usb_cap(core_if,
+                                                dwc_otg_module_params.
+                                                ic_usb_cap);
+       }
+       if (dwc_otg_module_params.tx_thr_length != -1) {
+               retval +=
+                   dwc_otg_set_param_tx_thr_length(core_if,
+                                                   dwc_otg_module_params.tx_thr_length);
+       }
+       if (dwc_otg_module_params.rx_thr_length != -1) {
+               retval +=
+                   dwc_otg_set_param_rx_thr_length(core_if,
+                                                   dwc_otg_module_params.
+                                                   rx_thr_length);
+       }
+       if (dwc_otg_module_params.ahb_thr_ratio != -1) {
+               retval +=
+                   dwc_otg_set_param_ahb_thr_ratio(core_if,
+                                                   dwc_otg_module_params.ahb_thr_ratio);
+       }
+       if (dwc_otg_module_params.power_down != -1) {
+               retval +=
+                   dwc_otg_set_param_power_down(core_if,
+                                                dwc_otg_module_params.power_down);
+       }
+       if (dwc_otg_module_params.reload_ctl != -1) {
+               retval +=
+                   dwc_otg_set_param_reload_ctl(core_if,
+                                                dwc_otg_module_params.reload_ctl);
+       }
+
+       if (dwc_otg_module_params.dev_out_nak != -1) {
+               retval +=
+                       dwc_otg_set_param_dev_out_nak(core_if,
+                       dwc_otg_module_params.dev_out_nak);
+       }
+
+       if (dwc_otg_module_params.cont_on_bna != -1) {
+               retval +=
+                       dwc_otg_set_param_cont_on_bna(core_if,
+                       dwc_otg_module_params.cont_on_bna);
+       }
+
+       if (dwc_otg_module_params.ahb_single != -1) {
+               retval +=
+                       dwc_otg_set_param_ahb_single(core_if,
+                       dwc_otg_module_params.ahb_single);
+       }
+
+       if (dwc_otg_module_params.otg_ver != -1) {
+               retval +=
+                   dwc_otg_set_param_otg_ver(core_if,
+                                             dwc_otg_module_params.otg_ver);
+       }
+       if (dwc_otg_module_params.adp_enable != -1) {
+               retval +=
+                   dwc_otg_set_param_adp_enable(core_if,
+                                                dwc_otg_module_params.
+                                                adp_enable);
+       }
+       return retval;
+}
+
+/**
+ * This function is the top level interrupt handler for the Common
+ * (Device and host modes) interrupts.
+ */
+static irqreturn_t dwc_otg_common_irq(int irq, void *dev)
+{
+       int32_t retval = IRQ_NONE;
+
+       retval = dwc_otg_handle_common_intr(dev);
+       if (retval != 0) {
+               S3C2410X_CLEAR_EINTPEND();
+       }
+       return IRQ_RETVAL(retval);
+}
+
+/**
+ * This function is called when a lm_device is unregistered with the
+ * dwc_otg_driver. This happens, for example, when the rmmod command is
+ * executed. The device may or may not be electrically present. If it is
+ * present, the driver stops device processing. Any resources used on behalf
+ * of this device are freed.
+ *
+ * @param _dev
+ */
+#ifdef LM_INTERFACE
+#define REM_RETVAL(n) 
+static void dwc_otg_driver_remove(      struct lm_device *_dev )
+{       dwc_otg_device_t *otg_dev = lm_get_drvdata(_dev);
+#elif  defined(PCI_INTERFACE)
+#define REM_RETVAL(n) 
+static void dwc_otg_driver_remove(      struct pci_dev *_dev )
+{      dwc_otg_device_t *otg_dev = pci_get_drvdata(_dev);
+#elif  defined(PLATFORM_INTERFACE)
+#define REM_RETVAL(n) n
+static int dwc_otg_driver_remove(        struct platform_device *_dev )
+{       dwc_otg_device_t *otg_dev = platform_get_drvdata(_dev);
+#endif
+
+       DWC_DEBUGPL(DBG_ANY, "%s(%p) otg_dev %p\n", __func__, _dev, otg_dev);
+
+       if (!otg_dev) {
+               /* Memory allocation for the dwc_otg_device failed. */
+               DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
+                return REM_RETVAL(-ENOMEM);
+       }
+#ifndef DWC_DEVICE_ONLY
+       if (otg_dev->hcd) {
+               hcd_remove(_dev);
+       } else {
+               DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
+                return REM_RETVAL(-EINVAL);
+       }
+#endif
+
+#ifndef DWC_HOST_ONLY
+       if (otg_dev->pcd) {
+               pcd_remove(_dev);
+       } else {
+               DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->pcd NULL!\n", __func__);
+                return REM_RETVAL(-EINVAL);
+       }
+#endif
+       /*
+        * Free the IRQ
+        */
+       if (otg_dev->common_irq_installed) {
+#ifdef PLATFORM_INTERFACE
+               free_irq(platform_get_irq(_dev, 0), otg_dev);
+#else
+               free_irq(_dev->irq, otg_dev);
+#endif
+        } else {
+               DWC_DEBUGPL(DBG_ANY, "%s: There is no installed irq!\n", __func__);
+               return REM_RETVAL(-ENXIO);
+       }  
+
+       if (otg_dev->core_if) {
+               dwc_otg_cil_remove(otg_dev->core_if);
+       } else {
+               DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->core_if NULL!\n", __func__);
+               return REM_RETVAL(-ENXIO);
+       }
+
+       /*
+        * Remove the device attributes
+        */
+       dwc_otg_attr_remove(_dev);
+
+       /*
+        * Return the memory.
+        */
+       if (otg_dev->os_dep.base) {
+               iounmap(otg_dev->os_dep.base);
+       }
+       DWC_FREE(otg_dev);
+
+       /*
+        * Clear the drvdata pointer.
+        */
+#ifdef LM_INTERFACE
+       lm_set_drvdata(_dev, 0);
+#elif defined(PCI_INTERFACE)
+        release_mem_region(otg_dev->os_dep.rsrc_start,
+                           otg_dev->os_dep.rsrc_len);
+       pci_set_drvdata(_dev, 0);
+#elif  defined(PLATFORM_INTERFACE)
+        platform_set_drvdata(_dev, 0);
+#endif
+        return REM_RETVAL(0);
+}
+
+/**
+ * This function is called when an lm_device is bound to a
+ * dwc_otg_driver. It creates the driver components required to
+ * control the device (CIL, HCD, and PCD) and it initializes the
+ * device. The driver components are stored in a dwc_otg_device
+ * structure. A reference to the dwc_otg_device is saved in the
+ * lm_device. This allows the driver to access the dwc_otg_device
+ * structure on subsequent calls to driver methods for this device.
+ *
+ * @param _dev Bus device
+ */
+static int dwc_otg_driver_probe(
+#ifdef LM_INTERFACE
+                                      struct lm_device *_dev
+#elif defined(PCI_INTERFACE)
+                                      struct pci_dev *_dev,
+                                      const struct pci_device_id *id
+#elif  defined(PLATFORM_INTERFACE)
+                                       struct platform_device *_dev
+#endif
+    )
+{
+       int retval = 0;
+       dwc_otg_device_t *dwc_otg_device;
+        int devirq;
+
+       dev_dbg(&_dev->dev, "dwc_otg_driver_probe(%p)\n", _dev);
+#ifdef LM_INTERFACE
+       dev_dbg(&_dev->dev, "start=0x%08x\n", (unsigned)_dev->resource.start);
+#elif defined(PCI_INTERFACE)
+       if (!id) {
+               DWC_ERROR("Invalid pci_device_id %p", id);
+               return -EINVAL;
+       }
+
+       if (!_dev || (pci_enable_device(_dev) < 0)) {
+               DWC_ERROR("Invalid pci_device %p", _dev);
+               return -ENODEV;
+       }
+       dev_dbg(&_dev->dev, "start=0x%08x\n", (unsigned)pci_resource_start(_dev,0));
+       /* other stuff needed as well? */
+        
+#elif  defined(PLATFORM_INTERFACE)
+       dev_dbg(&_dev->dev, "start=0x%08x (len 0x%x)\n",
+                (unsigned)_dev->resource->start,
+                (unsigned)(_dev->resource->end - _dev->resource->start));
+#endif
+
+       dwc_otg_device = DWC_ALLOC(sizeof(dwc_otg_device_t));
+
+       if (!dwc_otg_device) {
+               dev_err(&_dev->dev, "kmalloc of dwc_otg_device failed\n");
+               return -ENOMEM;
+       }
+
+       memset(dwc_otg_device, 0, sizeof(*dwc_otg_device));
+       dwc_otg_device->os_dep.reg_offset = 0xFFFFFFFF;
+
+       /*
+        * Map the DWC_otg Core memory into virtual address space.
+        */
+#ifdef LM_INTERFACE
+       dwc_otg_device->os_dep.base = ioremap(_dev->resource.start, SZ_256K);
+
+       if (!dwc_otg_device->os_dep.base) {
+               dev_err(&_dev->dev, "ioremap() failed\n");
+               DWC_FREE(dwc_otg_device);
+               return -ENOMEM;
+       }
+       dev_dbg(&_dev->dev, "base=0x%08x\n",
+               (unsigned)dwc_otg_device->os_dep.base);
+#elif defined(PCI_INTERFACE)
+       _dev->current_state = PCI_D0;
+       _dev->dev.power.power_state = PMSG_ON;
+
+       if (!_dev->irq) {
+               DWC_ERROR("Found HC with no IRQ. Check BIOS/PCI %s setup!",
+                         pci_name(_dev));
+               iounmap(dwc_otg_device->os_dep.base);
+               DWC_FREE(dwc_otg_device);
+               return -ENODEV;
+       }
+
+       dwc_otg_device->os_dep.rsrc_start = pci_resource_start(_dev, 0);
+       dwc_otg_device->os_dep.rsrc_len = pci_resource_len(_dev, 0);
+       DWC_DEBUGPL(DBG_ANY, "PCI resource: start=%08x, len=%08x\n",
+                   (unsigned)dwc_otg_device->os_dep.rsrc_start,
+                   (unsigned)dwc_otg_device->os_dep.rsrc_len);
+       if (!request_mem_region
+           (dwc_otg_device->os_dep.rsrc_start, dwc_otg_device->os_dep.rsrc_len,
+            "dwc_otg")) {
+               dev_dbg(&_dev->dev, "error requesting memory\n");
+               iounmap(dwc_otg_device->os_dep.base);
+               DWC_FREE(dwc_otg_device);
+               return -EFAULT;
+       }
+
+       dwc_otg_device->os_dep.base =
+           ioremap_nocache(dwc_otg_device->os_dep.rsrc_start,
+                           dwc_otg_device->os_dep.rsrc_len);
+       if (dwc_otg_device->os_dep.base == NULL) {
+               dev_dbg(&_dev->dev, "error mapping memory\n");
+               release_mem_region(dwc_otg_device->os_dep.rsrc_start,
+                                  dwc_otg_device->os_dep.rsrc_len);
+               iounmap(dwc_otg_device->os_dep.base);
+               DWC_FREE(dwc_otg_device);
+               return -EFAULT;
+       }
+       dev_dbg(&_dev->dev, "base=0x%p (before adjust) \n",
+               dwc_otg_device->os_dep.base);
+       dwc_otg_device->os_dep.base = (char *)dwc_otg_device->os_dep.base;
+       dev_dbg(&_dev->dev, "base=0x%p (after adjust) \n",
+               dwc_otg_device->os_dep.base);
+       dev_dbg(&_dev->dev, "%s: mapped PA 0x%x to VA 0x%p\n", __func__,
+               (unsigned)dwc_otg_device->os_dep.rsrc_start,
+               dwc_otg_device->os_dep.base);
+
+       pci_set_master(_dev);
+       pci_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PLATFORM_INTERFACE)
+        DWC_DEBUGPL(DBG_ANY,"Platform resource: start=%08x, len=%08x\n",
+                    _dev->resource->start,
+                    _dev->resource->end - _dev->resource->start + 1);
+#if 1
+        if (!request_mem_region(_dev->resource->start,
+                                _dev->resource->end - _dev->resource->start + 1,
+                                "dwc_otg")) {
+          dev_dbg(&_dev->dev, "error reserving mapped memory\n");
+          retval = -EFAULT;
+          goto fail;
+        }
+
+       dwc_otg_device->os_dep.base = ioremap_nocache(_dev->resource->start,
+                                                      _dev->resource->end -
+                                                      _dev->resource->start+1);
+#else
+        {
+                struct map_desc desc = {
+                    .virtual = IO_ADDRESS((unsigned)_dev->resource->start),
+                    .pfn     = __phys_to_pfn((unsigned)_dev->resource->start),
+                    .length  = SZ_128K,
+                    .type    = MT_DEVICE
+                };
+                iotable_init(&desc, 1);
+                dwc_otg_device->os_dep.base = (void *)desc.virtual;
+        }
+#endif
+       if (!dwc_otg_device->os_dep.base) {
+               dev_err(&_dev->dev, "ioremap() failed\n");
+               retval = -ENOMEM;
+               goto fail;
+       }
+       dev_dbg(&_dev->dev, "base=0x%08x\n",
+                (unsigned)dwc_otg_device->os_dep.base);
+#endif
+
+       /*
+        * Initialize driver data to point to the global DWC_otg
+        * Device structure.
+        */
+#ifdef LM_INTERFACE
+       lm_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PLATFORM_INTERFACE)
+       platform_set_drvdata(_dev, dwc_otg_device);
+#endif
+       dev_dbg(&_dev->dev, "dwc_otg_device=0x%p\n", dwc_otg_device);
+
+       dwc_otg_device->core_if = dwc_otg_cil_init(dwc_otg_device->os_dep.base);
+        DWC_DEBUGPL(DBG_HCDV, "probe of device %p given core_if %p\n",
+                    dwc_otg_device, dwc_otg_device->core_if);//GRAYG
+        
+       if (!dwc_otg_device->core_if) {
+               dev_err(&_dev->dev, "CIL initialization failed!\n");
+               retval = -ENOMEM;
+               goto fail;
+       }
+
+       dev_dbg(&_dev->dev, "Calling get_gsnpsid\n");
+       /*
+        * Attempt to ensure this device is really a DWC_otg Controller.
+        * Read and verify the SNPSID register contents. The value should be
+        * 0x45F42XXX or 0x45F42XXX, which corresponds to either "OT2" or "OTG3",
+        * as in "OTG version 2.XX" or "OTG version 3.XX".
+        */
+
+       if (((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) !=     0x4F542000) &&
+               ((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) != 0x4F543000)) {
+               dev_err(&_dev->dev, "Bad value for SNPSID: 0x%08x\n",
+                       dwc_otg_get_gsnpsid(dwc_otg_device->core_if));
+               retval = -EINVAL;
+               goto fail;
+       }
+
+       /*
+        * Validate parameter values.
+        */
+       dev_dbg(&_dev->dev, "Calling set_parameters\n");
+       if (set_parameters(dwc_otg_device->core_if)) {
+               retval = -EINVAL;
+               goto fail;
+       }
+
+       /*
+        * Create Device Attributes in sysfs
+        */
+       dev_dbg(&_dev->dev, "Calling attr_create\n");
+       dwc_otg_attr_create(_dev);
+
+       /*
+        * Disable the global interrupt until all the interrupt
+        * handlers are installed.
+        */
+       dev_dbg(&_dev->dev, "Calling disable_global_interrupts\n");
+       dwc_otg_disable_global_interrupts(dwc_otg_device->core_if);
+
+       /*
+        * Install the interrupt handler for the common interrupts before
+        * enabling common interrupts in core_init below.
+        */
+        
+#if defined(PLATFORM_INTERFACE)
+        devirq = platform_get_irq(_dev, 0);
+#else
+        devirq = _dev->irq;
+#endif
+       DWC_DEBUGPL(DBG_CIL, "registering (common) handler for irq%d\n",
+                   devirq);
+       dev_dbg(&_dev->dev, "Calling request_irq(%d)\n", devirq);
+       retval = request_irq(devirq, dwc_otg_common_irq,
+                             IRQF_SHARED,
+                             "dwc_otg", dwc_otg_device);
+       if (retval) {
+               DWC_ERROR("request of irq%d failed\n", devirq);
+               retval = -EBUSY;
+               goto fail;
+       } else {
+               dwc_otg_device->common_irq_installed = 1;
+       }
+
+#ifndef IRQF_TRIGGER_LOW
+#if defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
+       dev_dbg(&_dev->dev, "Calling set_irq_type\n");
+       set_irq_type(devirq,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30))
+                     IRQT_LOW
+#else
+                     IRQ_TYPE_LEVEL_LOW
+#endif
+                    );
+#endif
+#endif /*IRQF_TRIGGER_LOW*/
+        
+       /*
+        * Initialize the DWC_otg core.
+        */
+       dev_dbg(&_dev->dev, "Calling dwc_otg_core_init\n");
+       dwc_otg_core_init(dwc_otg_device->core_if);
+               
+#ifndef DWC_HOST_ONLY
+       /*
+        * Initialize the PCD
+        */
+       dev_dbg(&_dev->dev, "Calling pcd_init\n");
+       retval = pcd_init(_dev);
+       if (retval != 0) {
+               DWC_ERROR("pcd_init failed\n");
+               dwc_otg_device->pcd = NULL;
+               goto fail;
+       }       
+#endif
+#ifndef DWC_DEVICE_ONLY
+       /*
+        * Initialize the HCD
+        */
+       dev_dbg(&_dev->dev, "Calling hcd_init\n");
+       retval = hcd_init(_dev);
+       if (retval != 0) {
+               DWC_ERROR("hcd_init failed\n");
+               dwc_otg_device->hcd = NULL;
+               goto fail;
+       }
+#endif
+        /* Recover from drvdata having been overwritten by hcd_init() */
+#ifdef LM_INTERFACE
+       lm_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PLATFORM_INTERFACE)
+       platform_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PCI_INTERFACE)
+       pci_set_drvdata(_dev, dwc_otg_device);
+       dwc_otg_device->os_dep.pcidev = _dev;
+#endif
+
+       /*
+        * Enable the global interrupt after all the interrupt
+        * handlers are installed if there is no ADP support else 
+        * perform initial actions required for Internal ADP logic.
+        */
+       if (!dwc_otg_get_param_adp_enable(dwc_otg_device->core_if)) {   
+               dev_dbg(&_dev->dev, "Calling enable_global_interrupts\n");
+               dwc_otg_enable_global_interrupts(dwc_otg_device->core_if);
+               dev_dbg(&_dev->dev, "Done\n");
+       } else
+               dwc_otg_adp_start(dwc_otg_device->core_if, 
+                                                       dwc_otg_is_host_mode(dwc_otg_device->core_if));
+
+       return 0;
+
+fail:
+       dwc_otg_driver_remove(_dev);
+       return retval;
+}
+
+/**
+ * This structure defines the methods to be called by a bus driver
+ * during the lifecycle of a device on that bus. Both drivers and
+ * devices are registered with a bus driver. The bus driver matches
+ * devices to drivers based on information in the device and driver
+ * structures.
+ *
+ * The probe function is called when the bus driver matches a device
+ * to this driver. The remove function is called when a device is
+ * unregistered with the bus driver.
+ */
+#ifdef LM_INTERFACE
+static struct lm_driver dwc_otg_driver = {
+       .drv = {.name = (char *)dwc_driver_name,},
+       .probe = dwc_otg_driver_probe,
+       .remove = dwc_otg_driver_remove,
+        // 'suspend' and 'resume' absent
+};
+#elif defined(PCI_INTERFACE)
+static const struct pci_device_id pci_ids[] = { {
+                                                PCI_DEVICE(0x16c3, 0xabcd),
+                                                .driver_data =
+                                                (unsigned long)0xdeadbeef,
+                                                }, { /* end: all zeroes */ }
+};
+
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+/* pci driver glue; this is a "new style" PCI driver module */
+static struct pci_driver dwc_otg_driver = {
+       .name = "dwc_otg",
+       .id_table = pci_ids,
+
+       .probe = dwc_otg_driver_probe,
+       .remove = dwc_otg_driver_remove,
+
+       .driver = {
+                  .name = (char *)dwc_driver_name,
+                  },
+};
+#elif defined(PLATFORM_INTERFACE)
+static struct platform_device_id platform_ids[] = {
+        {
+              .name = "bcm2708_usb",
+              .driver_data = (kernel_ulong_t) 0xdeadbeef,
+        },
+        { /* end: all zeroes */ }
+};
+MODULE_DEVICE_TABLE(platform, platform_ids);
+
+static struct platform_driver dwc_otg_driver = {
+       .driver = {
+               .name = (char *)dwc_driver_name,
+               },
+        .id_table = platform_ids,
+                        
+       .probe = dwc_otg_driver_probe,
+       .remove = dwc_otg_driver_remove,
+        // no 'shutdown', 'suspend', 'resume', 'suspend_late' or 'resume_early' 
+};
+#endif
+
+/**
+ * This function is called when the dwc_otg_driver is installed with the
+ * insmod command. It registers the dwc_otg_driver structure with the
+ * appropriate bus driver. This will cause the dwc_otg_driver_probe function
+ * to be called. In addition, the bus driver will automatically expose
+ * attributes defined for the device and driver in the special sysfs file
+ * system.
+ *
+ * @return
+ */
+static int __init dwc_otg_driver_init(void)
+{
+       int retval = 0;
+       int error;
+        struct device_driver *drv;
+       printk(KERN_INFO "%s: version %s (%s bus)\n", dwc_driver_name,
+              DWC_DRIVER_VERSION,
+#ifdef LM_INTERFACE
+               "logicmodule");
+       retval = lm_driver_register(&dwc_otg_driver);
+        drv = &dwc_otg_driver.drv;
+#elif defined(PCI_INTERFACE)
+               "pci");
+       retval = pci_register_driver(&dwc_otg_driver);
+        drv = &dwc_otg_driver.driver;
+#elif defined(PLATFORM_INTERFACE)
+               "platform");
+       retval = platform_driver_register(&dwc_otg_driver);
+        drv = &dwc_otg_driver.driver;
+#endif
+       if (retval < 0) {
+               printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+               return retval;
+       }
+
+       error = driver_create_file(drv, &driver_attr_version);
+#ifdef DEBUG
+       error = driver_create_file(drv, &driver_attr_debuglevel);
+#endif
+       return retval;
+}
+
+module_init(dwc_otg_driver_init);
+
+/**
+ * This function is called when the driver is removed from the kernel
+ * with the rmmod command. The driver unregisters itself with its bus
+ * driver.
+ *
+ */
+static void __exit dwc_otg_driver_cleanup(void)
+{
+       printk(KERN_DEBUG "dwc_otg_driver_cleanup()\n");
+
+#ifdef LM_INTERFACE
+       driver_remove_file(&dwc_otg_driver.drv, &driver_attr_debuglevel);
+       driver_remove_file(&dwc_otg_driver.drv, &driver_attr_version);
+       lm_driver_unregister(&dwc_otg_driver);
+#elif defined(PCI_INTERFACE)
+       driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+       driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+       pci_unregister_driver(&dwc_otg_driver);
+#elif defined(PLATFORM_INTERFACE)
+       driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+       driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+       platform_driver_unregister(&dwc_otg_driver);
+#endif
+
+       printk(KERN_INFO "%s module removed\n", dwc_driver_name);
+}
+
+module_exit(dwc_otg_driver_cleanup);
+
+MODULE_DESCRIPTION(DWC_DRIVER_DESC);
+MODULE_AUTHOR("Synopsys Inc.");
+MODULE_LICENSE("GPL");
+
+module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444);
+MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None");
+module_param_named(opt, dwc_otg_module_params.opt, int, 0444);
+MODULE_PARM_DESC(opt, "OPT Mode");
+module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444);
+MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled");
+
+module_param_named(dma_desc_enable, dwc_otg_module_params.dma_desc_enable, int,
+                  0444);
+MODULE_PARM_DESC(dma_desc_enable,
+                "DMA Desc Mode 0=Address DMA 1=DMA Descriptor enabled");
+
+module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size, int,
+                  0444);
+MODULE_PARM_DESC(dma_burst_size,
+                "DMA Burst Size 1, 4, 8, 16, 32, 64, 128, 256");
+module_param_named(speed, dwc_otg_module_params.speed, int, 0444);
+MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed");
+module_param_named(host_support_fs_ls_low_power,
+                  dwc_otg_module_params.host_support_fs_ls_low_power, int,
+                  0444);
+MODULE_PARM_DESC(host_support_fs_ls_low_power,
+                "Support Low Power w/FS or LS 0=Support 1=Don't Support");
+module_param_named(host_ls_low_power_phy_clk,
+                  dwc_otg_module_params.host_ls_low_power_phy_clk, int, 0444);
+MODULE_PARM_DESC(host_ls_low_power_phy_clk,
+                "Low Speed Low Power Clock 0=48Mhz 1=6Mhz");
+module_param_named(enable_dynamic_fifo,
+                  dwc_otg_module_params.enable_dynamic_fifo, int, 0444);
+MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing");
+module_param_named(data_fifo_size, dwc_otg_module_params.data_fifo_size, int,
+                  0444);
+MODULE_PARM_DESC(data_fifo_size,
+                "Total number of words in the data FIFO memory 32-32768");
+module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size,
+                  int, 0444);
+MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(dev_nperio_tx_fifo_size,
+                  dwc_otg_module_params.dev_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(dev_nperio_tx_fifo_size,
+                "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(dev_perio_tx_fifo_size_1,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_1,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_2,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_2,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_3,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_3,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_4,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_4,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_5,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_5,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_6,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_6,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_7,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_7,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_8,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_8,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_9,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_9,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_10,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_10,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_11,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_11,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_12,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_12,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_13,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_13,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_14,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_14,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_15,
+                  dwc_otg_module_params.dev_perio_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_15,
+                "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size,
+                  int, 0444);
+MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(host_nperio_tx_fifo_size,
+                  dwc_otg_module_params.host_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_nperio_tx_fifo_size,
+                "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(host_perio_tx_fifo_size,
+                  dwc_otg_module_params.host_perio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_perio_tx_fifo_size,
+                "Number of words in the host periodic Tx FIFO 16-32768");
+module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size,
+                  int, 0444);
+/** @todo Set the max to 512K, modify checks */
+MODULE_PARM_DESC(max_transfer_size,
+                "The maximum transfer size supported in bytes 2047-65535");
+module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count,
+                  int, 0444);
+MODULE_PARM_DESC(max_packet_count,
+                "The maximum number of packets in a transfer 15-511");
+module_param_named(host_channels, dwc_otg_module_params.host_channels, int,
+                  0444);
+MODULE_PARM_DESC(host_channels,
+                "The number of host channel registers to use 1-16");
+module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints, int,
+                  0444);
+MODULE_PARM_DESC(dev_endpoints,
+                "The number of endpoints in addition to EP0 available for device mode 1-15");
+module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444);
+MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI");
+module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width, int,
+                  0444);
+MODULE_PARM_DESC(phy_utmi_width, "Specifies the UTMI+ Data Width 8 or 16 bits");
+module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr, int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ddr,
+                "ULPI at double or single data rate 0=Single 1=Double");
+module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus,
+                  int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ext_vbus,
+                "ULPI PHY using internal or external vbus 0=Internal");
+module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444);
+MODULE_PARM_DESC(i2c_enable, "FS PHY Interface");
+module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444);
+MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only");
+module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444);
+MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs");
+module_param_named(debug, g_dbg_lvl, int, 0444);
+MODULE_PARM_DESC(debug, "");
+
+module_param_named(en_multiple_tx_fifo,
+                  dwc_otg_module_params.en_multiple_tx_fifo, int, 0444);
+MODULE_PARM_DESC(en_multiple_tx_fifo,
+                "Dedicated Non Periodic Tx FIFOs 0=disabled 1=enabled");
+module_param_named(dev_tx_fifo_size_1,
+                  dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_2,
+                  dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_3,
+                  dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_4,
+                  dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_5,
+                  dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_6,
+                  dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_7,
+                  dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_8,
+                  dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_9,
+                  dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_10,
+                  dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_11,
+                  dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_12,
+                  dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_13,
+                  dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_14,
+                  dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_15,
+                  dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768");
+
+module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444);
+MODULE_PARM_DESC(thr_ctl,
+                "Thresholding enable flag bit 0 - non ISO Tx thr., 1 - ISO Tx thr., 2 - Rx thr.- bit 0=disabled 1=enabled");
+module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length, int,
+                  0444);
+MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs");
+module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length, int,
+                  0444);
+MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs");
+
+module_param_named(pti_enable, dwc_otg_module_params.pti_enable, int, 0444);
+module_param_named(mpi_enable, dwc_otg_module_params.mpi_enable, int, 0444);
+module_param_named(lpm_enable, dwc_otg_module_params.lpm_enable, int, 0444);
+MODULE_PARM_DESC(lpm_enable, "LPM Enable 0=LPM Disabled 1=LPM Enabled");
+module_param_named(ic_usb_cap, dwc_otg_module_params.ic_usb_cap, int, 0444);
+MODULE_PARM_DESC(ic_usb_cap,
+                "IC_USB Capability 0=IC_USB Disabled 1=IC_USB Enabled");
+module_param_named(ahb_thr_ratio, dwc_otg_module_params.ahb_thr_ratio, int,
+                  0444);
+MODULE_PARM_DESC(ahb_thr_ratio, "AHB Threshold Ratio");
+module_param_named(power_down, dwc_otg_module_params.power_down, int, 0444);
+MODULE_PARM_DESC(power_down, "Power Down Mode");
+module_param_named(reload_ctl, dwc_otg_module_params.reload_ctl, int, 0444);
+MODULE_PARM_DESC(reload_ctl, "HFIR Reload Control");
+module_param_named(dev_out_nak, dwc_otg_module_params.dev_out_nak, int, 0444);
+MODULE_PARM_DESC(dev_out_nak, "Enable Device OUT NAK");
+module_param_named(cont_on_bna, dwc_otg_module_params.cont_on_bna, int, 0444);
+MODULE_PARM_DESC(cont_on_bna, "Enable Enable Continue on BNA");
+module_param_named(ahb_single, dwc_otg_module_params.ahb_single, int, 0444);
+MODULE_PARM_DESC(ahb_single, "Enable AHB Single Support");
+module_param_named(adp_enable, dwc_otg_module_params.adp_enable, int, 0444);
+MODULE_PARM_DESC(adp_enable, "ADP Enable 0=ADP Disabled 1=ADP Enabled");
+module_param_named(otg_ver, dwc_otg_module_params.otg_ver, int, 0444);
+MODULE_PARM_DESC(otg_ver, "OTG revision supported 0=OTG 1.3 1=OTG 2.0");
+module_param(microframe_schedule, bool, 0444);
+MODULE_PARM_DESC(microframe_schedule, "Enable the microframe scheduler");
+
+/** @page "Module Parameters"
+ *
+ * The following parameters may be specified when starting the module.
+ * These parameters define how the DWC_otg controller should be
+ * configured. Parameter values are passed to the CIL initialization
+ * function dwc_otg_cil_init
+ *
+ * Example: <code>modprobe dwc_otg speed=1 otg_cap=1</code>
+ *
+
+ <table>
+ <tr><td>Parameter Name</td><td>Meaning</td></tr>
+
+ <tr>
+ <td>otg_cap</td>
+ <td>Specifies the OTG capabilities. The driver will automatically detect the
+ value for this parameter if none is specified.
+ - 0: HNP and SRP capable (default, if available)
+ - 1: SRP Only capable
+ - 2: No HNP/SRP capable
+ </td></tr>
+
+ <tr>
+ <td>dma_enable</td>
+ <td>Specifies whether to use slave or DMA mode for accessing the data FIFOs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Slave
+ - 1: DMA (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dma_burst_size</td>
+ <td>The DMA Burst size (applicable only for External DMA Mode).
+ - Values: 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ </td></tr>
+
+ <tr>
+ <td>speed</td>
+ <td>Specifies the maximum speed of operation in host and device mode. The
+ actual speed depends on the speed of the attached device and the value of
+ phy_type.
+ - 0: High Speed (default)
+ - 1: Full Speed
+ </td></tr>
+
+ <tr>
+ <td>host_support_fs_ls_low_power</td>
+ <td>Specifies whether low power mode is supported when attached to a Full
+ Speed or Low Speed device in host mode.
+ - 0: Don't support low power mode (default)
+ - 1: Support low power mode
+ </td></tr>
+
+ <tr>
+ <td>host_ls_low_power_phy_clk</td>
+ <td>Specifies the PHY clock rate in low power mode when connected to a Low
+ Speed device in host mode. This parameter is applicable only if
+ HOST_SUPPORT_FS_LS_LOW_POWER is enabled.
+ - 0: 48 MHz (default)
+ - 1: 6 MHz
+ </td></tr>
+
+ <tr>
+ <td>enable_dynamic_fifo</td>
+ <td> Specifies whether FIFOs may be resized by the driver software.
+ - 0: Use cC FIFO size parameters
+ - 1: Allow dynamic FIFO sizing (default)
+ </td></tr>
+
+ <tr>
+ <td>data_fifo_size</td>
+ <td>Total number of 4-byte words in the data FIFO memory. This memory
+ includes the Rx FIFO, non-periodic Tx FIFO, and periodic Tx FIFOs.
+ - Values: 32 to 32768 (default 8192)
+
+ Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ </td></tr>
+
+ <tr>
+ <td>dev_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1064)
+ </td></tr>
+
+ <tr>
+ <td>dev_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in device mode when
+ dynamic FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>dev_perio_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the periodic Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+ <tr>
+ <td>host_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in host mode when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>host_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in host mode when
+ dynamic FIFO sizing is enabled in the core.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>host_perio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the host periodic Tx FIFO when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>max_transfer_size</td>
+ <td>The maximum transfer size supported in bytes.
+ - Values: 2047 to 65,535 (default 65,535)
+ </td></tr>
+
+ <tr>
+ <td>max_packet_count</td>
+ <td>The maximum number of packets in a transfer.
+ - Values: 15 to 511 (default 511)
+ </td></tr>
+
+ <tr>
+ <td>host_channels</td>
+ <td>The number of host channel registers to use.
+ - Values: 1 to 16 (default 12)
+
+ Note: The FPGA configuration supports a maximum of 12 host channels.
+ </td></tr>
+
+ <tr>
+ <td>dev_endpoints</td>
+ <td>The number of endpoints in addition to EP0 available for device mode
+ operations.
+ - Values: 1 to 15 (default 6 IN and OUT)
+
+ Note: The FPGA configuration supports a maximum of 6 IN and OUT endpoints in
+ addition to EP0.
+ </td></tr>
+
+ <tr>
+ <td>phy_type</td>
+ <td>Specifies the type of PHY interface to use. By default, the driver will
+ automatically detect the phy_type.
+ - 0: Full Speed
+ - 1: UTMI+ (default, if available)
+ - 2: ULPI
+ </td></tr>
+
+ <tr>
+ <td>phy_utmi_width</td>
+ <td>Specifies the UTMI+ Data Width. This parameter is applicable for a
+ phy_type of UTMI+. Also, this parameter is applicable only if the
+ OTG_HSPHY_WIDTH cC parameter was set to "8 and 16 bits", meaning that the
+ core has been configured to work at either data path width.
+ - Values: 8 or 16 bits (default 16)
+ </td></tr>
+
+ <tr>
+ <td>phy_ulpi_ddr</td>
+ <td>Specifies whether the ULPI operates at double or single data rate. This
+ parameter is only applicable if phy_type is ULPI.
+ - 0: single data rate ULPI interface with 8 bit wide data bus (default)
+ - 1: double data rate ULPI interface with 4 bit wide data bus
+ </td></tr>
+
+ <tr>
+ <td>i2c_enable</td>
+ <td>Specifies whether to use the I2C interface for full speed PHY. This
+ parameter is only applicable if PHY_TYPE is FS.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>ulpi_fs_ls</td>
+ <td>Specifies whether to use ULPI FS/LS mode only.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>ts_dline</td>
+ <td>Specifies whether term select D-Line pulsing for all PHYs is enabled.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+ 
+ <tr>
+ <td>en_multiple_tx_fifo</td>
+ <td>Specifies whether dedicatedto tx fifos are enabled for non periodic IN EPs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Disabled
+ - 1: Enabled (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dev_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+ <tr>
+ <td>tx_thr_length</td>
+ <td>Transmit Threshold length in 32 bit double words
+ - Values: 8 to 128 (default 64)
+ </td></tr>
+
+ <tr>
+ <td>rx_thr_length</td>
+ <td>Receive Threshold length in 32 bit double words
+ - Values: 8 to 128 (default 64)
+ </td></tr>
+
+<tr>
+ <td>thr_ctl</td>
+ <td>Specifies whether to enable Thresholding for Device mode. Bits 0, 1, 2 of 
+ this parmater specifies if thresholding is enabled for non-Iso Tx, Iso Tx and
+ Rx transfers accordingly.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - Values: 0 to 7 (default 0)
+ Bit values indicate:
+ - 0: Thresholding disabled
+ - 1: Thresholding enabled
+ </td></tr>
+
+<tr>
+ <td>dma_desc_enable</td>
+ <td>Specifies whether to enable Descriptor DMA mode.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Descriptor DMA disabled
+ - 1: Descriptor DMA (default, if available)
+ </td></tr>
+
+<tr>
+ <td>mpi_enable</td>
+ <td>Specifies whether to enable MPI enhancement mode.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: MPI disabled (default)
+ - 1: MPI enable
+ </td></tr>
+
+<tr>
+ <td>pti_enable</td>
+ <td>Specifies whether to enable PTI enhancement support.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: PTI disabled (default)
+ - 1: PTI enable
+ </td></tr>
+
+<tr>
+ <td>lpm_enable</td>
+ <td>Specifies whether to enable LPM support.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: LPM disabled
+ - 1: LPM enable (default, if available)
+ </td></tr>
+
+<tr>
+ <td>ic_usb_cap</td>
+ <td>Specifies whether to enable IC_USB capability.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: IC_USB disabled (default, if available)
+ - 1: IC_USB enable 
+ </td></tr>
+
+<tr>
+ <td>ahb_thr_ratio</td>
+ <td>Specifies AHB Threshold ratio.
+ - Values: 0 to 3 (default 0)
+ </td></tr>
+
+<tr>
+ <td>power_down</td>
+ <td>Specifies Power Down(Hibernation) Mode.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Power Down disabled (default)
+ - 2: Power Down enabled
+ </td></tr>
+ 
+ <tr>
+ <td>reload_ctl</td>
+ <td>Specifies whether dynamic reloading of the HFIR register is allowed during
+ run time. The driver will automatically detect the value for this parameter if
+ none is specified. In case the HFIR value is reloaded when HFIR.RldCtrl == 1'b0
+ the core might misbehave.
+ - 0: Reload Control disabled (default)
+ - 1: Reload Control enabled
+ </td></tr>
+
+ <tr>
+ <td>dev_out_nak</td>
+ <td>Specifies whether  Device OUT NAK enhancement enabled or no.
+ The driver will automatically detect the value for this parameter if
+ none is specified. This parameter is valid only when OTG_EN_DESC_DMA == 1b1.
+ - 0: The core does not set NAK after Bulk OUT transfer complete (default)
+ - 1: The core sets NAK after Bulk OUT transfer complete
+ </td></tr>
+
+ <tr>
+ <td>cont_on_bna</td>
+ <td>Specifies whether Enable Continue on BNA enabled or no. 
+ After receiving BNA interrupt the core disables the endpoint,when the
+ endpoint is re-enabled by the application the  
+ - 0: Core starts processing from the DOEPDMA descriptor (default)
+ - 1: Core starts processing from the descriptor which received the BNA.
+ This parameter is valid only when OTG_EN_DESC_DMA == 1b1.
+ </td></tr>
+
+ <tr>
+ <td>ahb_single</td>
+ <td>This bit when programmed supports SINGLE transfers for remainder data
+ in a transfer for DMA mode of operation. 
+ - 0: The remainder data will be sent using INCR burst size (default)
+ - 1: The remainder data will be sent using SINGLE burst size.
+ </td></tr>
+
+<tr>
+ <td>adp_enable</td>
+ <td>Specifies whether ADP feature is enabled.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: ADP feature disabled (default)
+ - 1: ADP feature enabled
+ </td></tr>
+
+  <tr>
+ <td>otg_ver</td>
+ <td>Specifies whether OTG is performing as USB OTG Revision 2.0 or Revision 1.3
+ USB OTG device.
+ - 0: OTG 2.0 support disabled (default)
+ - 1: OTG 2.0 support enabled 
+ </td></tr>
+
+*/
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_driver.h b/drivers/usb/host/dwc_otg/dwc_otg_driver.h
new file mode 100644
index 0000000..8a0e41b
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.h
@@ -0,0 +1,86 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.h $
+ * $Revision: #19 $
+ * $Date: 2010/11/15 $
+ * $Change: 1627671 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_DRIVER_H__
+#define __DWC_OTG_DRIVER_H__
+
+/** @file
+ * This file contains the interface to the Linux driver.
+ */
+#include "dwc_otg_os_dep.h"
+#include "dwc_otg_core_if.h"
+
+/* Type declarations */
+struct dwc_otg_pcd;
+struct dwc_otg_hcd;
+
+/**
+ * This structure is a wrapper that encapsulates the driver components used to
+ * manage a single DWC_otg controller.
+ */
+typedef struct dwc_otg_device {
+       /** Structure containing OS-dependent stuff. KEEP THIS STRUCT AT THE
+        * VERY BEGINNING OF THE DEVICE STRUCT. OSes such as FreeBSD and NetBSD
+        * require this. */
+       struct os_dependent os_dep;
+
+       /** Pointer to the core interface structure. */
+       dwc_otg_core_if_t *core_if;
+
+       /** Pointer to the PCD structure. */
+       struct dwc_otg_pcd *pcd;
+
+       /** Pointer to the HCD structure. */
+       struct dwc_otg_hcd *hcd;
+
+       /** Flag to indicate whether the common IRQ handler is installed. */
+       uint8_t common_irq_installed;
+
+} dwc_otg_device_t;
+
+/*We must clear S3C24XX_EINTPEND external interrupt register 
+ * because after clearing in this register trigerred IRQ from 
+ * H/W core in kernel interrupt can be occured again before OTG
+ * handlers clear all IRQ sources of Core registers because of
+ * timing latencies and Low Level IRQ Type.
+ */
+#ifdef CONFIG_MACH_IPMATE
+#define  S3C2410X_CLEAR_EINTPEND()   \
+do { \
+       __raw_writel(1UL << 11,S3C24XX_EINTPEND); \
+} while (0)
+#else
+#define  S3C2410X_CLEAR_EINTPEND()   do { } while (0)
+#endif
+
+#endif
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
new file mode 100644
index 0000000..434d0c4
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
@@ -0,0 +1,3473 @@
+
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.c $
+ * $Revision: #104 $
+ * $Date: 2011/10/24 $
+ * $Change: 1871159 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/** @file
+ * This file implements HCD Core. All code in this file is portable and doesn't
+ * use any OS specific functions.
+ * Interface provided by HCD Core is defined in <code><hcd_if.h></code>
+ * header file.
+ */
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+extern bool microframe_schedule;
+
+//#define DEBUG_HOST_CHANNELS
+#ifdef DEBUG_HOST_CHANNELS
+static int last_sel_trans_num_per_scheduled = 0;
+static int last_sel_trans_num_nonper_scheduled = 0;
+static int last_sel_trans_num_avail_hc_at_start = 0;
+static int last_sel_trans_num_avail_hc_at_end = 0;
+#endif /* DEBUG_HOST_CHANNELS */
+
+dwc_otg_hcd_t *dwc_otg_hcd_alloc_hcd(void)
+{
+       return DWC_ALLOC(sizeof(dwc_otg_hcd_t));
+}
+
+/**
+ * Connection timeout function.  An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.
+ */
+void dwc_otg_hcd_connect_timeout(void *ptr)
+{
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, ptr);
+       DWC_PRINTF("Connect Timeout\n");
+       __DWC_ERROR("Device Not Connected/Responding\n");
+}
+
+#if defined(DEBUG)
+static void dump_channel_info(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       if (qh->channel != NULL) {
+               dwc_hc_t *hc = qh->channel;
+               dwc_list_link_t *item;
+               dwc_otg_qh_t *qh_item;
+               int num_channels = hcd->core_if->core_params->host_channels;
+               int i;
+
+               dwc_otg_hc_regs_t *hc_regs;
+               hcchar_data_t hcchar;
+               hcsplt_data_t hcsplt;
+               hctsiz_data_t hctsiz;
+               uint32_t hcdma;
+
+               hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+               hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+               hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+               hcdma = DWC_READ_REG32(&hc_regs->hcdma);
+
+               DWC_PRINTF("  Assigned to channel %p:\n", hc);
+               DWC_PRINTF("    hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32,
+                          hcsplt.d32);
+               DWC_PRINTF("    hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32,
+                          hcdma);
+               DWC_PRINTF("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+                          hc->dev_addr, hc->ep_num, hc->ep_is_in);
+               DWC_PRINTF("    ep_type: %d\n", hc->ep_type);
+               DWC_PRINTF("    max_packet: %d\n", hc->max_packet);
+               DWC_PRINTF("    data_pid_start: %d\n", hc->data_pid_start);
+               DWC_PRINTF("    xfer_started: %d\n", hc->xfer_started);
+               DWC_PRINTF("    halt_status: %d\n", hc->halt_status);
+               DWC_PRINTF("    xfer_buff: %p\n", hc->xfer_buff);
+               DWC_PRINTF("    xfer_len: %d\n", hc->xfer_len);
+               DWC_PRINTF("    qh: %p\n", hc->qh);
+               DWC_PRINTF("  NP inactive sched:\n");
+               DWC_LIST_FOREACH(item, &hcd->non_periodic_sched_inactive) {
+                       qh_item =
+                           DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
+                       DWC_PRINTF("    %p\n", qh_item);
+               }
+               DWC_PRINTF("  NP active sched:\n");
+               DWC_LIST_FOREACH(item, &hcd->non_periodic_sched_active) {
+                       qh_item =
+                           DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
+                       DWC_PRINTF("    %p\n", qh_item);
+               }
+               DWC_PRINTF("  Channels: \n");
+               for (i = 0; i < num_channels; i++) {
+                       dwc_hc_t *hc = hcd->hc_ptr_array[i];
+                       DWC_PRINTF("    %2d: %p\n", i, hc);
+               }
+       }
+}
+#else
+#define dump_channel_info(hcd, qh)
+#endif /* DEBUG */
+
+/**
+ * Work queue function for starting the HCD when A-Cable is connected.
+ * The hcd_start() must be called in a process context.
+ */
+static void hcd_start_func(void *_vp)
+{
+       dwc_otg_hcd_t *hcd = (dwc_otg_hcd_t *) _vp;
+
+       DWC_DEBUGPL(DBG_HCDV, "%s() %p\n", __func__, hcd);
+       if (hcd) {
+               hcd->fops->start(hcd);
+       }
+}
+
+static void del_xfer_timers(dwc_otg_hcd_t * hcd)
+{
+#ifdef DEBUG
+       int i;
+       int num_channels = hcd->core_if->core_params->host_channels;
+       for (i = 0; i < num_channels; i++) {
+               DWC_TIMER_CANCEL(hcd->core_if->hc_xfer_timer[i]);
+       }
+#endif
+}
+
+static void del_timers(dwc_otg_hcd_t * hcd)
+{
+       del_xfer_timers(hcd);
+       DWC_TIMER_CANCEL(hcd->conn_timer);
+}
+
+/**
+ * Processes all the URBs in a single list of QHs. Completes them with
+ * -ETIMEDOUT and frees the QTD.
+ */
+static void kill_urbs_in_qh_list(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
+{
+       dwc_list_link_t *qh_item;
+       dwc_otg_qh_t *qh;
+       dwc_otg_qtd_t *qtd, *qtd_tmp;
+
+       DWC_LIST_FOREACH(qh_item, qh_list) {
+               qh = DWC_LIST_ENTRY(qh_item, dwc_otg_qh_t, qh_list_entry);
+               DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp,
+                                        &qh->qtd_list, qtd_list_entry) {
+                       qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+                       if (qtd->urb != NULL) {
+                               hcd->fops->complete(hcd, qtd->urb->priv,
+                                                   qtd->urb, -DWC_E_TIMEOUT);
+                               dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+                       }
+
+               }
+       }
+}
+
+/**
+ * Responds with an error status of ETIMEDOUT to all URBs in the non-periodic
+ * and periodic schedules. The QTD associated with each URB is removed from
+ * the schedule and freed. This function may be called when a disconnect is
+ * detected or when the HCD is being stopped.
+ */
+static void kill_all_urbs(dwc_otg_hcd_t * hcd)
+{
+       kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_inactive);
+       kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_active);
+       kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_inactive);
+       kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_ready);
+       kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_assigned);
+       kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_queued);
+}
+
+/**
+ * Start the connection timer.  An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.  The
+ * timer is deleted if a port connect interrupt occurs before the
+ * timer expires.
+ */
+static void dwc_otg_hcd_start_connect_timer(dwc_otg_hcd_t * hcd)
+{
+       DWC_TIMER_SCHEDULE(hcd->conn_timer, 10000 /* 10 secs */ );
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_session_start_cb(void *p)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd;
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+       dwc_otg_hcd = p;
+       dwc_otg_hcd_start_connect_timer(dwc_otg_hcd);
+       return 1;
+}
+
+/**
+ * HCD Callback function for starting the HCD when A-Cable is
+ * connected.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_start_cb(void *p)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = p;
+       dwc_otg_core_if_t *core_if;
+       hprt0_data_t hprt0;
+
+       core_if = dwc_otg_hcd->core_if;
+
+       if (core_if->op_state == B_HOST) {
+               /*
+                * Reset the port.  During a HNP mode switch the reset
+                * needs to occur within 1ms and have a duration of at
+                * least 50ms.
+                */
+               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+               hprt0.b.prtrst = 1;
+               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+       }
+       DWC_WORKQ_SCHEDULE_DELAYED(core_if->wq_otg,
+                                  hcd_start_func, dwc_otg_hcd, 50,
+                                  "start hcd");
+
+       return 1;
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_disconnect_cb(void *p)
+{
+       gintsts_data_t intr;
+       dwc_otg_hcd_t *dwc_otg_hcd = p;
+
+       /*
+        * Set status flags for the hub driver.
+        */
+       dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+       dwc_otg_hcd->flags.b.port_connect_status = 0;
+
+       /*
+        * Shutdown any transfers in process by clearing the Tx FIFO Empty
+        * interrupt mask and status bits and disabling subsequent host
+        * channel interrupts.
+        */
+       intr.d32 = 0;
+       intr.b.nptxfempty = 1;
+       intr.b.ptxfempty = 1;
+       intr.b.hcintr = 1;
+       DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk,
+                        intr.d32, 0);
+       DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintsts,
+                        intr.d32, 0);
+
+       del_timers(dwc_otg_hcd);
+
+       /*
+        * Turn off the vbus power only if the core has transitioned to device
+        * mode. If still in host mode, need to keep power on to detect a
+        * reconnection.
+        */
+       if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) {
+               if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) {
+                       hprt0_data_t hprt0 = {.d32 = 0 };
+                       DWC_PRINTF("Disconnect: PortPower off\n");
+                       hprt0.b.prtpwr = 0;
+                       DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0,
+                                       hprt0.d32);
+               }
+
+               dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if);
+       }
+
+       /* Respond with an error status to all URBs in the schedule. */
+       kill_all_urbs(dwc_otg_hcd);
+
+       if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) {
+               /* Clean up any host channels that were in use. */
+               int num_channels;
+               int i;
+               dwc_hc_t *channel;
+               dwc_otg_hc_regs_t *hc_regs;
+               hcchar_data_t hcchar;
+
+               num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
+
+               if (!dwc_otg_hcd->core_if->dma_enable) {
+                       /* Flush out any channel requests in slave mode. */
+                       for (i = 0; i < num_channels; i++) {
+                               channel = dwc_otg_hcd->hc_ptr_array[i];
+                               if (DWC_CIRCLEQ_EMPTY_ENTRY
+                                   (channel, hc_list_entry)) {
+                                       hc_regs =
+                                           dwc_otg_hcd->core_if->
+                                           host_if->hc_regs[i];
+                                       hcchar.d32 =
+                                           DWC_READ_REG32(&hc_regs->hcchar);
+                                       if (hcchar.b.chen) {
+                                               hcchar.b.chen = 0;
+                                               hcchar.b.chdis = 1;
+                                               hcchar.b.epdir = 0;
+                                               DWC_WRITE_REG32
+                                                   (&hc_regs->hcchar,
+                                                    hcchar.d32);
+                                       }
+                               }
+                       }
+               }
+
+               for (i = 0; i < num_channels; i++) {
+                       channel = dwc_otg_hcd->hc_ptr_array[i];
+                       if (DWC_CIRCLEQ_EMPTY_ENTRY(channel, hc_list_entry)) {
+                               hc_regs =
+                                   dwc_otg_hcd->core_if->host_if->hc_regs[i];
+                               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+                               if (hcchar.b.chen) {
+                                       /* Halt the channel. */
+                                       hcchar.b.chdis = 1;
+                                       DWC_WRITE_REG32(&hc_regs->hcchar,
+                                                       hcchar.d32);
+                               }
+
+                               dwc_otg_hc_cleanup(dwc_otg_hcd->core_if,
+                                                  channel);
+                               DWC_CIRCLEQ_INSERT_TAIL
+                                   (&dwc_otg_hcd->free_hc_list, channel,
+                                    hc_list_entry);
+                               /*
+                                * Added for Descriptor DMA to prevent channel double cleanup
+                                * in release_channel_ddma(). Which called from ep_disable
+                                * when device disconnect.
+                                */
+                               channel->qh = NULL;
+                       }
+               }
+       }
+
+       if (dwc_otg_hcd->fops->disconnect) {
+               dwc_otg_hcd->fops->disconnect(dwc_otg_hcd);
+       }
+
+       return 1;
+}
+
+/**
+ * HCD Callback function for stopping the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_stop_cb(void *p)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = p;
+
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+       dwc_otg_hcd_stop(dwc_otg_hcd);
+       return 1;
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * HCD Callback function for sleep of HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int dwc_otg_hcd_sleep_cb(void *p)
+{
+       dwc_otg_hcd_t *hcd = p;
+
+       dwc_otg_hcd_free_hc_from_lpm(hcd);
+
+       return 0;
+}
+#endif
+
+/**
+ * HCD Callback function for Remote Wakeup.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int dwc_otg_hcd_rem_wakeup_cb(void *p)
+{
+       dwc_otg_hcd_t *hcd = p;
+
+       if (hcd->core_if->lx_state == DWC_OTG_L2) {
+               hcd->flags.b.port_suspend_change = 1;
+       }
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       else {
+               hcd->flags.b.port_l1_change = 1;
+       }
+#endif
+       return 0;
+}
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ */
+void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd)
+{
+       hprt0_data_t hprt0 = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
+ 
+       /*
+        * The root hub should be disconnected before this function is called.
+        * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue)
+        * and the QH lists (via ..._hcd_endpoint_disable).
+        */
+
+       /* Turn off all host-specific interrupts. */
+       dwc_otg_disable_host_interrupts(hcd->core_if);
+
+       /* Turn off the vbus power */
+       DWC_PRINTF("PortPower off\n");
+       hprt0.b.prtpwr = 0;
+       DWC_WRITE_REG32(hcd->core_if->host_if->hprt0, hprt0.d32);
+       dwc_mdelay(1);
+}
+
+int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * hcd,
+                           dwc_otg_hcd_urb_t * dwc_otg_urb, void **ep_handle,
+                           int atomic_alloc)
+{
+       dwc_irqflags_t flags;
+       int retval = 0;
+       dwc_otg_qtd_t *qtd;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+#ifdef DEBUG /* integrity checks (Broadcom) */
+       if (NULL == hcd->core_if) {
+               DWC_ERROR("**** DWC OTG HCD URB Enqueue - HCD has NULL core_if\n");
+               /* No longer connected. */
+               return -DWC_E_INVALID;
+       }
+#endif
+       if (!hcd->flags.b.port_connect_status) {
+               /* No longer connected. */
+               DWC_ERROR("Not connected\n");
+               return -DWC_E_NO_DEVICE;
+       }
+
+       qtd = dwc_otg_hcd_qtd_create(dwc_otg_urb, atomic_alloc);
+       if (qtd == NULL) {
+               DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n");
+               return -DWC_E_NO_MEMORY;
+       }
+#ifdef DEBUG /* integrity checks (Broadcom) */
+       if (qtd->urb == NULL) {
+               DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD with no URBs\n");
+               return -DWC_E_NO_MEMORY;
+       }
+       if (qtd->urb->priv == NULL) {
+               DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD URB with no URB handle\n");
+               return -DWC_E_NO_MEMORY;
+       }
+#endif
+       retval =
+           dwc_otg_hcd_qtd_add(qtd, hcd, (dwc_otg_qh_t **) ep_handle, atomic_alloc);
+            // creates a new queue in ep_handle if it doesn't exist already
+       if (retval < 0) {
+               DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. "
+                         "Error status %d\n", retval);
+               dwc_otg_hcd_qtd_free(qtd);
+       } else {
+               qtd->qh = *ep_handle;
+       }
+       intr_mask.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->gintmsk);
+       if (!intr_mask.b.sofintr && retval == 0) {
+               dwc_otg_transaction_type_e tr_type;
+               if ((qtd->qh->ep_type == UE_BULK)
+                   && !(qtd->urb->flags & URB_GIVEBACK_ASAP)) {
+                       /* Do not schedule SG transactions until qtd has URB_GIVEBACK_ASAP set */
+                       return 0;
+               }
+               DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+               tr_type = dwc_otg_hcd_select_transactions(hcd);
+               if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+                       dwc_otg_hcd_queue_transactions(hcd, tr_type);
+               }
+               DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+       }
+
+       return retval;
+}
+
+int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * hcd,
+                           dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+       dwc_otg_qh_t *qh;
+       dwc_otg_qtd_t *urb_qtd;
+
+#ifdef DEBUG /* integrity checks (Broadcom) */
+
+       if (hcd == NULL) {
+               DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL HCD\n");
+               return -DWC_E_INVALID;
+       }
+       if (dwc_otg_urb == NULL) { 
+               DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL URB\n");
+               return -DWC_E_INVALID;
+       }
+       if (dwc_otg_urb->qtd == NULL) { 
+               DWC_ERROR("**** DWC OTG HCD URB Dequeue with NULL QTD\n");
+               return -DWC_E_INVALID;
+       }
+       urb_qtd = dwc_otg_urb->qtd;
+       if (urb_qtd->qh == NULL) { 
+               DWC_ERROR("**** DWC OTG HCD URB Dequeue with QTD with NULL Q handler\n");
+               return -DWC_E_INVALID;
+       }
+#else
+       urb_qtd = dwc_otg_urb->qtd;
+#endif
+       qh = urb_qtd->qh;
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               if (urb_qtd->in_process) {
+                       dump_channel_info(hcd, qh);
+               }
+       }
+#ifdef DEBUG /* integrity checks (Broadcom) */
+       if (hcd->core_if == NULL) {
+               DWC_ERROR("**** DWC OTG HCD URB Dequeue HCD has NULL core_if\n");
+               return -DWC_E_INVALID;
+       }
+#endif
+       if (urb_qtd->in_process && qh->channel) {
+               /* The QTD is in process (it has been assigned to a channel). */
+               if (hcd->flags.b.port_connect_status) {
+                       /*
+                        * If still connected (i.e. in host mode), halt the
+                        * channel so it can be used for other transfers. If
+                        * no longer connected, the host registers can't be
+                        * written to halt the channel since the core is in
+                        * device mode.
+                        */
+                       dwc_otg_hc_halt(hcd->core_if, qh->channel,
+                                       DWC_OTG_HC_XFER_URB_DEQUEUE);
+               }
+       }
+
+       /*
+        * Free the QTD and clean up the associated QH. Leave the QH in the
+        * schedule if it has any remaining QTDs.
+        */
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue - "
+                    "delete %sQueue handler\n",
+                    hcd->core_if->dma_desc_enable?"DMA ":"");
+       if (!hcd->core_if->dma_desc_enable) {
+               uint8_t b = urb_qtd->in_process;
+               dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
+               if (b) {
+                       dwc_otg_hcd_qh_deactivate(hcd, qh, 0);
+                       qh->channel = NULL;
+               } else if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+                       dwc_otg_hcd_qh_remove(hcd, qh);
+               }
+       } else {
+               dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
+       }
+       return 0;
+}
+
+int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
+                                int retry)
+{
+       dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+       int retval = 0;
+       dwc_irqflags_t flags;
+
+       if (retry < 0) {
+               retval = -DWC_E_INVALID;
+               goto done;
+       }
+
+       if (!qh) {
+               retval = -DWC_E_INVALID;
+               goto done;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+
+       while (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list) && retry) {
+               DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+               retry--;
+               dwc_msleep(5);
+               DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+       }
+
+       dwc_otg_hcd_qh_remove(hcd, qh);
+
+       DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+       /*
+        * Split dwc_otg_hcd_qh_remove_and_free() into qh_remove
+        * and qh_free to prevent stack dump on DWC_DMA_FREE() with
+        * irq_disabled (spinlock_irqsave) in dwc_otg_hcd_desc_list_free()
+        * and dwc_otg_hcd_frame_list_alloc().
+        */
+       dwc_otg_hcd_qh_free(hcd, qh);
+
+done:
+       return retval;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+       int retval = 0;
+       dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+       if (!qh)
+               return -DWC_E_INVALID;
+
+       qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+       return retval;
+}
+#endif
+
+/**
+ * HCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t hcd_cil_callbacks = {
+       .start = dwc_otg_hcd_start_cb,
+       .stop = dwc_otg_hcd_stop_cb,
+       .disconnect = dwc_otg_hcd_disconnect_cb,
+       .session_start = dwc_otg_hcd_session_start_cb,
+       .resume_wakeup = dwc_otg_hcd_rem_wakeup_cb,
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       .sleep = dwc_otg_hcd_sleep_cb,
+#endif
+       .p = 0,
+};
+
+/**
+ * Reset tasklet function
+ */
+static void reset_tasklet_func(void *data)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t *) data;
+       dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+       hprt0_data_t hprt0;
+
+       DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n");
+
+       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+       hprt0.b.prtrst = 1;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+       dwc_mdelay(60);
+
+       hprt0.b.prtrst = 0;
+       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+       dwc_otg_hcd->flags.b.port_reset_change = 1;
+}
+
+static void qh_list_free(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
+{
+       dwc_list_link_t *item;
+       dwc_otg_qh_t *qh;
+       dwc_irqflags_t flags;
+
+       if (!qh_list->next) {
+               /* The list hasn't been initialized yet. */
+               return;
+       }
+       /*
+        * Hold spinlock here. Not needed in that case if bellow 
+        * function is being called from ISR 
+        */
+       DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+       /* Ensure there are no QTDs or URBs left. */
+       kill_urbs_in_qh_list(hcd, qh_list);
+       DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+
+       DWC_LIST_FOREACH(item, qh_list) {
+               qh = DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
+               dwc_otg_hcd_qh_remove_and_free(hcd, qh);
+       }
+}
+
+/**
+ * Exit from Hibernation if Host did not detect SRP from connected SRP capable
+ * Device during SRP time by host power up.
+ */
+void dwc_otg_hcd_power_up(void *ptr)
+{
+       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+       dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+
+       DWC_PRINTF("%s called\n", __FUNCTION__);
+
+       if (!core_if->hibernation_suspend) {
+               DWC_PRINTF("Already exited from Hibernation\n");
+               return;
+       }
+
+       /* Switch on the voltage to the core */
+       gpwrdn.b.pwrdnswtch = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Reset the core */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Disable power clamps */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnclmp = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       /* Remove reset the core signal */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pwrdnrstn = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+       dwc_udelay(10);
+
+       /* Disable PMU interrupt */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuintsel = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       core_if->hibernation_suspend = 0;
+
+       /* Disable PMU */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.pmuactv = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+       dwc_udelay(10);
+
+       /* Enable VBUS */
+       gpwrdn.d32 = 0;
+       gpwrdn.b.dis_vbus = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+       core_if->op_state = A_HOST;
+       dwc_otg_core_init(core_if);
+       dwc_otg_enable_global_interrupts(core_if);
+       cil_hcd_start(core_if);
+}
+
+/**
+ * Frees secondary storage associated with the dwc_otg_hcd structure contained
+ * in the struct usb_hcd field.
+ */
+static void dwc_otg_hcd_free(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       int i;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n");
+
+       del_timers(dwc_otg_hcd);
+
+       /* Free memory for QH/QTD lists */
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_inactive);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued);
+
+       /* Free memory for the host channels. */
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               dwc_hc_t *hc = dwc_otg_hcd->hc_ptr_array[i];
+
+#ifdef DEBUG
+               if (dwc_otg_hcd->core_if->hc_xfer_timer[i]) {
+                       DWC_TIMER_FREE(dwc_otg_hcd->core_if->hc_xfer_timer[i]);
+               }
+#endif
+               if (hc != NULL) {
+                       DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n",
+                                   i, hc);
+                       DWC_FREE(hc);
+               }
+       }
+
+       if (dwc_otg_hcd->core_if->dma_enable) {
+               if (dwc_otg_hcd->status_buf_dma) {
+                       DWC_DMA_FREE(DWC_OTG_HCD_STATUS_BUF_SIZE,
+                                    dwc_otg_hcd->status_buf,
+                                    dwc_otg_hcd->status_buf_dma);
+               }
+       } else if (dwc_otg_hcd->status_buf != NULL) {
+               DWC_FREE(dwc_otg_hcd->status_buf);
+       }
+       DWC_SPINLOCK_FREE(dwc_otg_hcd->lock);
+       /* Set core_if's lock pointer to NULL */
+       dwc_otg_hcd->core_if->lock = NULL;
+
+       DWC_TIMER_FREE(dwc_otg_hcd->conn_timer);
+       DWC_TASK_FREE(dwc_otg_hcd->reset_tasklet);
+
+#ifdef DWC_DEV_SRPCAP
+       if (dwc_otg_hcd->core_if->power_down == 2 &&
+           dwc_otg_hcd->core_if->pwron_timer) {
+               DWC_TIMER_FREE(dwc_otg_hcd->core_if->pwron_timer);
+       }
+#endif
+       DWC_FREE(dwc_otg_hcd);
+}
+
+int init_hcd_usecs(dwc_otg_hcd_t *_hcd);
+
+int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if)
+{
+       int retval = 0;
+       int num_channels;
+       int i;
+       dwc_hc_t *channel;
+
+       hcd->lock = DWC_SPINLOCK_ALLOC();
+        DWC_DEBUGPL(DBG_HCDV, "init of HCD %p given core_if %p\n",
+                    hcd, core_if);
+       if (!hcd->lock) {
+               DWC_ERROR("Could not allocate lock for pcd");
+               DWC_FREE(hcd);
+               retval = -DWC_E_NO_MEMORY;
+               goto out;
+       }
+       hcd->core_if = core_if;
+
+       /* Register the HCD CIL Callbacks */
+       dwc_otg_cil_register_hcd_callbacks(hcd->core_if,
+                                          &hcd_cil_callbacks, hcd);
+
+       /* Initialize the non-periodic schedule. */
+       DWC_LIST_INIT(&hcd->non_periodic_sched_inactive);
+       DWC_LIST_INIT(&hcd->non_periodic_sched_active);
+
+       /* Initialize the periodic schedule. */
+       DWC_LIST_INIT(&hcd->periodic_sched_inactive);
+       DWC_LIST_INIT(&hcd->periodic_sched_ready);
+       DWC_LIST_INIT(&hcd->periodic_sched_assigned);
+       DWC_LIST_INIT(&hcd->periodic_sched_queued);
+
+       /*
+        * Create a host channel descriptor for each host channel implemented
+        * in the controller. Initialize the channel descriptor array.
+        */
+       DWC_CIRCLEQ_INIT(&hcd->free_hc_list);
+       num_channels = hcd->core_if->core_params->host_channels;
+       DWC_MEMSET(hcd->hc_ptr_array, 0, sizeof(hcd->hc_ptr_array));
+       for (i = 0; i < num_channels; i++) {
+               channel = DWC_ALLOC(sizeof(dwc_hc_t));
+               if (channel == NULL) {
+                       retval = -DWC_E_NO_MEMORY;
+                       DWC_ERROR("%s: host channel allocation failed\n",
+                                 __func__);
+                       dwc_otg_hcd_free(hcd);
+                       goto out;
+               }
+               channel->hc_num = i;
+               hcd->hc_ptr_array[i] = channel;
+#ifdef DEBUG
+               hcd->core_if->hc_xfer_timer[i] =
+                   DWC_TIMER_ALLOC("hc timer", hc_xfer_timeout,
+                                   &hcd->core_if->hc_xfer_info[i]);
+#endif
+               DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i,
+                           channel);
+       }
+
+       /* Initialize the Connection timeout timer. */
+       hcd->conn_timer = DWC_TIMER_ALLOC("Connection timer",
+                                         dwc_otg_hcd_connect_timeout, 0);
+
+       printk(KERN_DEBUG "dwc_otg: Microframe scheduler %s\n", microframe_schedule ? "enabled":"disabled");
+       if (microframe_schedule)
+               init_hcd_usecs(hcd);
+
+       /* Initialize reset tasklet. */
+       hcd->reset_tasklet = DWC_TASK_ALLOC("reset_tasklet", reset_tasklet_func, hcd);
+#ifdef DWC_DEV_SRPCAP
+       if (hcd->core_if->power_down == 2) {
+               /* Initialize Power on timer for Host power up in case hibernation */
+               hcd->core_if->pwron_timer = DWC_TIMER_ALLOC("PWRON TIMER",
+                                                                       dwc_otg_hcd_power_up, core_if);
+       }
+#endif 
+
+       /*
+        * Allocate space for storing data on status transactions. Normally no
+        * data is sent, but this space acts as a bit bucket. This must be
+        * done after usb_add_hcd since that function allocates the DMA buffer
+        * pool.
+        */
+       if (hcd->core_if->dma_enable) {
+               hcd->status_buf =
+                   DWC_DMA_ALLOC(DWC_OTG_HCD_STATUS_BUF_SIZE,
+                                 &hcd->status_buf_dma);
+       } else {
+               hcd->status_buf = DWC_ALLOC(DWC_OTG_HCD_STATUS_BUF_SIZE);
+       }
+       if (!hcd->status_buf) {
+               retval = -DWC_E_NO_MEMORY;
+               DWC_ERROR("%s: status_buf allocation failed\n", __func__);
+               dwc_otg_hcd_free(hcd);
+               goto out;
+       }
+
+       hcd->otg_port = 1;
+       hcd->frame_list = NULL;
+       hcd->frame_list_dma = 0;
+       hcd->periodic_qh_count = 0;
+out:
+       return retval;
+}
+
+void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd)
+{
+       /* Turn off all host-specific interrupts. */
+       dwc_otg_disable_host_interrupts(hcd->core_if);
+
+       dwc_otg_hcd_free(hcd);
+}
+
+/**
+ * Initializes dynamic portions of the DWC_otg HCD state.
+ */
+static void dwc_otg_hcd_reinit(dwc_otg_hcd_t * hcd)
+{
+       int num_channels;
+       int i;
+       dwc_hc_t *channel;
+       dwc_hc_t *channel_tmp;
+
+       hcd->flags.d32 = 0;
+
+       hcd->non_periodic_qh_ptr = &hcd->non_periodic_sched_active;
+       if (!microframe_schedule) {
+               hcd->non_periodic_channels = 0;
+               hcd->periodic_channels = 0;
+       } else {
+               hcd->available_host_channels = hcd->core_if->core_params->host_channels;
+       }
+       /*
+        * Put all channels in the free channel list and clean up channel
+        * states.
+        */
+       DWC_CIRCLEQ_FOREACH_SAFE(channel, channel_tmp,
+                                &hcd->free_hc_list, hc_list_entry) {
+               DWC_CIRCLEQ_REMOVE(&hcd->free_hc_list, channel, hc_list_entry);
+       }
+
+       num_channels = hcd->core_if->core_params->host_channels;
+       for (i = 0; i < num_channels; i++) {
+               channel = hcd->hc_ptr_array[i];
+               DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, channel,
+                                       hc_list_entry);
+               dwc_otg_hc_cleanup(hcd->core_if, channel);
+       }
+
+       /* Initialize the DWC core for host mode operation. */
+       dwc_otg_core_host_init(hcd->core_if);
+
+       /* Set core_if's lock pointer to the hcd->lock */
+       hcd->core_if->lock = hcd->lock;
+}
+
+/**
+ * Assigns transactions from a QTD to a free host channel and initializes the
+ * host channel to perform the transactions. The host channel is removed from
+ * the free list.
+ *
+ * @param hcd The HCD state structure.
+ * @param qh Transactions from the first QTD for this QH are selected and
+ * assigned to a free host channel.
+ */
+static void assign_and_init_hc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       dwc_hc_t *hc;
+       dwc_otg_qtd_t *qtd;
+       dwc_otg_hcd_urb_t *urb;
+       void* ptr = NULL;
+
+       qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+       
+       urb = qtd->urb;
+
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p) - urb %x, actual_length %d\n", __func__, hcd, qh, (unsigned int)urb, urb->actual_length);
+
+       if (((urb->actual_length < 0) || (urb->actual_length > urb->length)) && !dwc_otg_hcd_is_pipe_in(&urb->pipe_info))
+               urb->actual_length = urb->length;
+
+
+       hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
+
+       /* Remove the host channel from the free list. */
+       DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
+
+       qh->channel = hc;
+
+       qtd->in_process = 1;
+
+       /*
+        * Use usb_pipedevice to determine device address. This address is
+        * 0 before the SET_ADDRESS command and the correct address afterward.
+        */
+       hc->dev_addr = dwc_otg_hcd_get_dev_addr(&urb->pipe_info);
+       hc->ep_num = dwc_otg_hcd_get_ep_num(&urb->pipe_info);
+       hc->speed = qh->dev_speed;
+       hc->max_packet = dwc_max_packet(qh->maxp);
+
+       hc->xfer_started = 0;
+       hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS;
+       hc->error_state = (qtd->error_count > 0);
+       hc->halt_on_queue = 0;
+       hc->halt_pending = 0;
+       hc->requests = 0;
+
+       /*
+        * The following values may be modified in the transfer type section
+        * below. The xfer_len value may be reduced when the transfer is
+        * started to accommodate the max widths of the XferSize and PktCnt
+        * fields in the HCTSIZn register.
+        */
+
+       hc->ep_is_in = (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) != 0);
+       if (hc->ep_is_in) {
+               hc->do_ping = 0;
+       } else {
+               hc->do_ping = qh->ping_state;
+       }
+
+       hc->data_pid_start = qh->data_toggle;
+       hc->multi_count = 1;
+
+       if (hcd->core_if->dma_enable) {
+               hc->xfer_buff = (uint8_t *) urb->dma + urb->actual_length;
+
+               /* For non-dword aligned case */
+               if (((unsigned long)hc->xfer_buff & 0x3)
+                   && !hcd->core_if->dma_desc_enable) {
+                       ptr = (uint8_t *) urb->buf + urb->actual_length;
+               }
+       } else {
+               hc->xfer_buff = (uint8_t *) urb->buf + urb->actual_length;
+       }
+       hc->xfer_len = urb->length - urb->actual_length;
+       hc->xfer_count = 0;
+
+       /*
+        * Set the split attributes
+        */
+       hc->do_split = 0;
+       if (qh->do_split) {
+               uint32_t hub_addr, port_addr;
+               hc->do_split = 1;
+               hc->xact_pos = qtd->isoc_split_pos;
+               hc->complete_split = qtd->complete_split;
+               hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &port_addr);
+               hc->hub_addr = (uint8_t) hub_addr;
+               hc->port_addr = (uint8_t) port_addr;
+       }
+
+       switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
+       case UE_CONTROL:
+               hc->ep_type = DWC_OTG_EP_TYPE_CONTROL;
+               switch (qtd->control_phase) {
+               case DWC_OTG_CONTROL_SETUP:
+                       DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction\n");
+                       hc->do_ping = 0;
+                       hc->ep_is_in = 0;
+                       hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
+                       if (hcd->core_if->dma_enable) {
+                               hc->xfer_buff = (uint8_t *) urb->setup_dma;
+                       } else {
+                               hc->xfer_buff = (uint8_t *) urb->setup_packet;
+                       }
+                       hc->xfer_len = 8;
+                       ptr = NULL;
+                       break;
+               case DWC_OTG_CONTROL_DATA:
+                       DWC_DEBUGPL(DBG_HCDV, "  Control data transaction\n");
+                       hc->data_pid_start = qtd->data_toggle;
+                       break;
+               case DWC_OTG_CONTROL_STATUS:
+                       /*
+                        * Direction is opposite of data direction or IN if no
+                        * data.
+                        */
+                       DWC_DEBUGPL(DBG_HCDV, "  Control status transaction\n");
+                       if (urb->length == 0) {
+                               hc->ep_is_in = 1;
+                       } else {
+                               hc->ep_is_in =
+                                   dwc_otg_hcd_is_pipe_out(&urb->pipe_info);
+                       }
+                       if (hc->ep_is_in) {
+                               hc->do_ping = 0;
+                       }
+
+                       hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+
+                       hc->xfer_len = 0;
+                       if (hcd->core_if->dma_enable) {
+                               hc->xfer_buff = (uint8_t *) hcd->status_buf_dma;
+                       } else {
+                               hc->xfer_buff = (uint8_t *) hcd->status_buf;
+                       }
+                       ptr = NULL;
+                       break;
+               }
+               break;
+       case UE_BULK:
+               hc->ep_type = DWC_OTG_EP_TYPE_BULK;
+               break;
+       case UE_INTERRUPT:
+               hc->ep_type = DWC_OTG_EP_TYPE_INTR;
+               break;
+       case UE_ISOCHRONOUS:
+               {
+                       struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+
+                       hc->ep_type = DWC_OTG_EP_TYPE_ISOC;
+
+                       if (hcd->core_if->dma_desc_enable)
+                               break;
+
+                       frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
+
+                       frame_desc->status = 0;
+
+                       if (hcd->core_if->dma_enable) {
+                               hc->xfer_buff = (uint8_t *) urb->dma;
+                       } else {
+                               hc->xfer_buff = (uint8_t *) urb->buf;
+                       }
+                       hc->xfer_buff +=
+                           frame_desc->offset + qtd->isoc_split_offset;
+                       hc->xfer_len =
+                           frame_desc->length - qtd->isoc_split_offset;
+
+                       /* For non-dword aligned buffers */
+                       if (((unsigned long)hc->xfer_buff & 0x3)
+                           && hcd->core_if->dma_enable) {
+                               ptr =
+                                   (uint8_t *) urb->buf + frame_desc->offset +
+                                   qtd->isoc_split_offset;
+                       } else
+                               ptr = NULL;
+
+                       if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+                               if (hc->xfer_len <= 188) {
+                                       hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL;
+                               } else {
+                                       hc->xact_pos =
+                                           DWC_HCSPLIT_XACTPOS_BEGIN;
+                               }
+                       }
+               }
+               break;
+       }
+       /* non DWORD-aligned buffer case */     
+       if (ptr) {
+               uint32_t buf_size;
+               if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+                       buf_size = hcd->core_if->core_params->max_transfer_size;
+               } else {                                
+                       buf_size = 4096;
+               }
+               if (!qh->dw_align_buf) {
+                       qh->dw_align_buf = DWC_DMA_ALLOC_ATOMIC(buf_size,
+                                                        &qh->dw_align_buf_dma);
+                       if (!qh->dw_align_buf) {
+                               DWC_ERROR
+                                   ("%s: Failed to allocate memory to handle "
+                                    "non-dword aligned buffer case\n",
+                                    __func__);
+                               return;
+                       }
+               }
+               if (!hc->ep_is_in) {
+                       dwc_memcpy(qh->dw_align_buf, ptr, hc->xfer_len);
+               }
+               hc->align_buff = qh->dw_align_buf_dma;
+       } else {
+               hc->align_buff = 0;
+       }
+
+       if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+           hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+               /*
+                * This value may be modified when the transfer is started to
+                * reflect the actual transfer length.
+                */
+               hc->multi_count = dwc_hb_mult(qh->maxp);
+       }
+
+       if (hcd->core_if->dma_desc_enable)
+               hc->desc_list_addr = qh->desc_list_dma;
+
+       dwc_otg_hc_init(hcd->core_if, hc);
+       hc->qh = qh;
+}
+
+/**
+ * This function selects transactions from the HCD transfer schedule and
+ * assigns them to available host channels. It is called from HCD interrupt
+ * handler functions.
+ *
+ * @param hcd The HCD state structure.
+ *
+ * @return The types of new transactions that were assigned to host channels.
+ */
+dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t * hcd)
+{
+       dwc_list_link_t *qh_ptr;
+       dwc_otg_qh_t *qh;
+       int num_channels;
+       dwc_irqflags_t flags;
+       dwc_spinlock_t *channel_lock = DWC_SPINLOCK_ALLOC();
+       dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE;
+
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCD, "  Select Transactions\n");
+#endif
+
+#ifdef DEBUG_HOST_CHANNELS
+       last_sel_trans_num_per_scheduled = 0;
+       last_sel_trans_num_nonper_scheduled = 0;
+       last_sel_trans_num_avail_hc_at_start = hcd->available_host_channels;
+#endif /* DEBUG_HOST_CHANNELS */
+
+       /* Process entries in the periodic ready list. */
+       qh_ptr = DWC_LIST_FIRST(&hcd->periodic_sched_ready);
+
+       while (qh_ptr != &hcd->periodic_sched_ready &&
+              !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
+               if (microframe_schedule) {
+                       // Make sure we leave one channel for non periodic transactions.
+                       DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+                       if (hcd->available_host_channels <= 1) {
+                               DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+                               break;
+                       }
+                       hcd->available_host_channels--;
+                       DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+#ifdef DEBUG_HOST_CHANNELS
+                       last_sel_trans_num_per_scheduled++;
+#endif /* DEBUG_HOST_CHANNELS */
+               }
+               qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+               assign_and_init_hc(hcd, qh);
+
+               /*
+                * Move the QH from the periodic ready schedule to the
+                * periodic assigned schedule.
+                */
+               qh_ptr = DWC_LIST_NEXT(qh_ptr);
+               DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+               DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
+                                  &qh->qh_list_entry);
+               DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+
+               ret_val = DWC_OTG_TRANSACTION_PERIODIC;
+       }
+
+       /*
+        * Process entries in the inactive portion of the non-periodic
+        * schedule. Some free host channels may not be used if they are
+        * reserved for periodic transfers.
+        */
+       qh_ptr = hcd->non_periodic_sched_inactive.next;
+       num_channels = hcd->core_if->core_params->host_channels;
+       while (qh_ptr != &hcd->non_periodic_sched_inactive &&
+              (microframe_schedule || hcd->non_periodic_channels <
+               num_channels - hcd->periodic_channels) &&
+              !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
+
+               if (microframe_schedule) {
+                               DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+                               if (hcd->available_host_channels < 1) {
+                                       DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+                                       break;
+                               }
+                               hcd->available_host_channels--;
+                               DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+#ifdef DEBUG_HOST_CHANNELS
+                               last_sel_trans_num_nonper_scheduled++;
+#endif /* DEBUG_HOST_CHANNELS */
+               }
+               qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+
+               assign_and_init_hc(hcd, qh);
+
+               /*
+                * Move the QH from the non-periodic inactive schedule to the
+                * non-periodic active schedule.
+                */
+               qh_ptr = DWC_LIST_NEXT(qh_ptr);
+               DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+               DWC_LIST_MOVE_HEAD(&hcd->non_periodic_sched_active,
+                                  &qh->qh_list_entry);
+               DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+
+               if (ret_val == DWC_OTG_TRANSACTION_NONE) {
+                       ret_val = DWC_OTG_TRANSACTION_NON_PERIODIC;
+               } else {
+                       ret_val = DWC_OTG_TRANSACTION_ALL;
+               }
+
+               if (!microframe_schedule)
+                       hcd->non_periodic_channels++;
+       }
+
+#ifdef DEBUG_HOST_CHANNELS
+       last_sel_trans_num_avail_hc_at_end = hcd->available_host_channels;
+#endif /* DEBUG_HOST_CHANNELS */
+
+       DWC_SPINLOCK_FREE(channel_lock);
+       return ret_val;
+}
+
+/**
+ * Attempts to queue a single transaction request for a host channel
+ * associated with either a periodic or non-periodic transfer. This function
+ * assumes that there is space available in the appropriate request queue. For
+ * an OUT transfer or SETUP transaction in Slave mode, it checks whether space
+ * is available in the appropriate Tx FIFO.
+ *
+ * @param hcd The HCD state structure.
+ * @param hc Host channel descriptor associated with either a periodic or
+ * non-periodic transfer.
+ * @param fifo_dwords_avail Number of DWORDs available in the periodic Tx
+ * FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic
+ * transfers.
+ *
+ * @return 1 if a request is queued and more requests may be needed to
+ * complete the transfer, 0 if no more requests are required for this
+ * transfer, -1 if there is insufficient space in the Tx FIFO.
+ */
+static int queue_transaction(dwc_otg_hcd_t * hcd,
+                            dwc_hc_t * hc, uint16_t fifo_dwords_avail)
+{
+       int retval;
+
+       if (hcd->core_if->dma_enable) {
+               if (hcd->core_if->dma_desc_enable) {
+                       if (!hc->xfer_started
+                           || (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)) {
+                               dwc_otg_hcd_start_xfer_ddma(hcd, hc->qh);
+                               hc->qh->ping_state = 0;
+                       }
+               } else if (!hc->xfer_started) {
+                       dwc_otg_hc_start_transfer(hcd->core_if, hc);
+                       hc->qh->ping_state = 0;
+               }
+               retval = 0;
+       } else if (hc->halt_pending) {
+               /* Don't queue a request if the channel has been halted. */
+               retval = 0;
+       } else if (hc->halt_on_queue) {
+               dwc_otg_hc_halt(hcd->core_if, hc, hc->halt_status);
+               retval = 0;
+       } else if (hc->do_ping) {
+               if (!hc->xfer_started) {
+                       dwc_otg_hc_start_transfer(hcd->core_if, hc);
+               }
+               retval = 0;
+       } else if (!hc->ep_is_in || hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+               if ((fifo_dwords_avail * 4) >= hc->max_packet) {
+                       if (!hc->xfer_started) {
+                               dwc_otg_hc_start_transfer(hcd->core_if, hc);
+                               retval = 1;
+                       } else {
+                               retval =
+                                   dwc_otg_hc_continue_transfer(hcd->core_if,
+                                                                hc);
+                       }
+               } else {
+                       retval = -1;
+               }
+       } else {
+               if (!hc->xfer_started) {
+                       dwc_otg_hc_start_transfer(hcd->core_if, hc);
+                       retval = 1;
+               } else {
+                       retval = dwc_otg_hc_continue_transfer(hcd->core_if, hc);
+               }
+       }
+
+       return retval;
+}
+
+/**
+ * Processes periodic channels for the next frame and queues transactions for
+ * these channels to the DWC_otg controller. After queueing transactions, the
+ * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions
+ * to queue as Periodic Tx FIFO or request queue space becomes available.
+ * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled.
+ */
+static void process_periodic_channels(dwc_otg_hcd_t * hcd)
+{
+       hptxsts_data_t tx_status;
+       dwc_list_link_t *qh_ptr;
+       dwc_otg_qh_t *qh;
+       int status;
+       int no_queue_space = 0;
+       int no_fifo_space = 0;
+
+       dwc_otg_host_global_regs_t *host_regs;
+       host_regs = hcd->core_if->host_if->host_global_regs;
+
+       DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n");
+#ifdef DEBUG
+       tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
+       DWC_DEBUGPL(DBG_HCDV,
+                   "  P Tx Req Queue Space Avail (before queue): %d\n",
+                   tx_status.b.ptxqspcavail);
+       DWC_DEBUGPL(DBG_HCDV, "  P Tx FIFO Space Avail (before queue): %d\n",
+                   tx_status.b.ptxfspcavail);
+#endif
+
+       qh_ptr = hcd->periodic_sched_assigned.next;
+       while (qh_ptr != &hcd->periodic_sched_assigned) {
+               tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
+               if (tx_status.b.ptxqspcavail == 0) {
+                       no_queue_space = 1;
+                       break;
+               }
+
+               qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+
+               /*
+                * Set a flag if we're queuing high-bandwidth in slave mode.
+                * The flag prevents any halts to get into the request queue in
+                * the middle of multiple high-bandwidth packets getting queued.
+                */
+               if (!hcd->core_if->dma_enable && qh->channel->multi_count > 1) {
+                       hcd->core_if->queuing_high_bandwidth = 1;
+               }
+               status =
+                   queue_transaction(hcd, qh->channel,
+                                     tx_status.b.ptxfspcavail);
+               if (status < 0) {
+                       no_fifo_space = 1;
+                       break;
+               }
+
+               /*
+                * In Slave mode, stay on the current transfer until there is
+                * nothing more to do or the high-bandwidth request count is
+                * reached. In DMA mode, only need to queue one request. The
+                * controller automatically handles multiple packets for
+                * high-bandwidth transfers.
+                */
+               if (hcd->core_if->dma_enable || status == 0 ||
+                   qh->channel->requests == qh->channel->multi_count) {
+                       qh_ptr = qh_ptr->next;
+                       /*
+                        * Move the QH from the periodic assigned schedule to
+                        * the periodic queued schedule.
+                        */
+                       DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_queued,
+                                          &qh->qh_list_entry);
+
+                       /* done queuing high bandwidth */
+                       hcd->core_if->queuing_high_bandwidth = 0;
+               }
+       }
+
+       if (!hcd->core_if->dma_enable) {
+               dwc_otg_core_global_regs_t *global_regs;
+               gintmsk_data_t intr_mask = {.d32 = 0 };
+
+               global_regs = hcd->core_if->core_global_regs;
+               intr_mask.b.ptxfempty = 1;
+#ifdef DEBUG
+               tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
+               DWC_DEBUGPL(DBG_HCDV,
+                           "  P Tx Req Queue Space Avail (after queue): %d\n",
+                           tx_status.b.ptxqspcavail);
+               DWC_DEBUGPL(DBG_HCDV,
+                           "  P Tx FIFO Space Avail (after queue): %d\n",
+                           tx_status.b.ptxfspcavail);
+#endif
+               if (!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned) ||
+                   no_queue_space || no_fifo_space) {
+                       /*
+                        * May need to queue more transactions as the request
+                        * queue or Tx FIFO empties. Enable the periodic Tx
+                        * FIFO empty interrupt. (Always use the half-empty
+                        * level to ensure that new requests are loaded as
+                        * soon as possible.)
+                        */
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
+                                        intr_mask.d32);
+               } else {
+                       /*
+                        * Disable the Tx FIFO empty interrupt since there are
+                        * no more transactions that need to be queued right
+                        * now. This function is called from interrupt
+                        * handlers to queue more transactions as transfer
+                        * states change.
+                        */
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
+                                        0);
+               }
+       }
+}
+
+/**
+ * Processes active non-periodic channels and queues transactions for these
+ * channels to the DWC_otg controller. After queueing transactions, the NP Tx
+ * FIFO Empty interrupt is enabled if there are more transactions to queue as
+ * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx
+ * FIFO Empty interrupt is disabled.
+ */
+static void process_non_periodic_channels(dwc_otg_hcd_t * hcd)
+{
+       gnptxsts_data_t tx_status;
+       dwc_list_link_t *orig_qh_ptr;
+       dwc_otg_qh_t *qh;
+       int status;
+       int no_queue_space = 0;
+       int no_fifo_space = 0;
+       int more_to_do = 0;
+
+       dwc_otg_core_global_regs_t *global_regs =
+           hcd->core_if->core_global_regs;
+
+       DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n");
+#ifdef DEBUG
+       tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+       DWC_DEBUGPL(DBG_HCDV,
+                   "  NP Tx Req Queue Space Avail (before queue): %d\n",
+                   tx_status.b.nptxqspcavail);
+       DWC_DEBUGPL(DBG_HCDV, "  NP Tx FIFO Space Avail (before queue): %d\n",
+                   tx_status.b.nptxfspcavail);
+#endif
+       /*
+        * Keep track of the starting point. Skip over the start-of-list
+        * entry.
+        */
+       if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
+               hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+       }
+       orig_qh_ptr = hcd->non_periodic_qh_ptr;
+
+       /*
+        * Process once through the active list or until no more space is
+        * available in the request queue or the Tx FIFO.
+        */
+       do {
+               tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+               if (!hcd->core_if->dma_enable && tx_status.b.nptxqspcavail == 0) {
+                       no_queue_space = 1;
+                       break;
+               }
+
+               qh = DWC_LIST_ENTRY(hcd->non_periodic_qh_ptr, dwc_otg_qh_t,
+                                   qh_list_entry);
+               status =
+                   queue_transaction(hcd, qh->channel,
+                                     tx_status.b.nptxfspcavail);
+
+               if (status > 0) {
+                       more_to_do = 1;
+               } else if (status < 0) {
+                       no_fifo_space = 1;
+                       break;
+               }
+
+               /* Advance to next QH, skipping start-of-list entry. */
+               hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+               if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
+                       hcd->non_periodic_qh_ptr =
+                           hcd->non_periodic_qh_ptr->next;
+               }
+
+       } while (hcd->non_periodic_qh_ptr != orig_qh_ptr);
+
+       if (!hcd->core_if->dma_enable) {
+               gintmsk_data_t intr_mask = {.d32 = 0 };
+               intr_mask.b.nptxfempty = 1;
+
+#ifdef DEBUG
+               tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+               DWC_DEBUGPL(DBG_HCDV,
+                           "  NP Tx Req Queue Space Avail (after queue): %d\n",
+                           tx_status.b.nptxqspcavail);
+               DWC_DEBUGPL(DBG_HCDV,
+                           "  NP Tx FIFO Space Avail (after queue): %d\n",
+                           tx_status.b.nptxfspcavail);
+#endif
+               if (more_to_do || no_queue_space || no_fifo_space) {
+                       /*
+                        * May need to queue more transactions as the request
+                        * queue or Tx FIFO empties. Enable the non-periodic
+                        * Tx FIFO empty interrupt. (Always use the half-empty
+                        * level to ensure that new requests are loaded as
+                        * soon as possible.)
+                        */
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
+                                        intr_mask.d32);
+               } else {
+                       /*
+                        * Disable the Tx FIFO empty interrupt since there are
+                        * no more transactions that need to be queued right
+                        * now. This function is called from interrupt
+                        * handlers to queue more transactions as transfer
+                        * states change.
+                        */
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
+                                        0);
+               }
+       }
+}
+
+/**
+ * This function processes the currently active host channels and queues
+ * transactions for these channels to the DWC_otg controller. It is called
+ * from HCD interrupt handler functions.
+ *
+ * @param hcd The HCD state structure.
+ * @param tr_type The type(s) of transactions to queue (non-periodic,
+ * periodic, or both).
+ */
+void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
+                                   dwc_otg_transaction_type_e tr_type)
+{
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n");
+#endif
+       /* Process host channels associated with periodic transfers. */
+       if ((tr_type == DWC_OTG_TRANSACTION_PERIODIC ||
+            tr_type == DWC_OTG_TRANSACTION_ALL) &&
+           !DWC_LIST_EMPTY(&hcd->periodic_sched_assigned)) {
+
+               process_periodic_channels(hcd);
+       }
+
+       /* Process host channels associated with non-periodic transfers. */
+       if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC ||
+           tr_type == DWC_OTG_TRANSACTION_ALL) {
+               if (!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active)) {
+                       process_non_periodic_channels(hcd);
+               } else {
+                       /*
+                        * Ensure NP Tx FIFO empty interrupt is disabled when
+                        * there are no non-periodic transfers to process.
+                        */
+                       gintmsk_data_t gintmsk = {.d32 = 0 };
+                       gintmsk.b.nptxfempty = 1;
+                       DWC_MODIFY_REG32(&hcd->core_if->
+                                        core_global_regs->gintmsk, gintmsk.d32,
+                                        0);
+               }
+       }
+}
+
+#ifdef DWC_HS_ELECT_TST
+/*
+ * Quick and dirty hack to implement the HS Electrical Test
+ * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
+ *
+ * This code was copied from our userspace app "hset". It sends a
+ * Get Device Descriptor control sequence in two parts, first the
+ * Setup packet by itself, followed some time later by the In and
+ * Ack packets. Rather than trying to figure out how to add this
+ * functionality to the normal driver code, we just hijack the
+ * hardware, using these two function to drive the hardware
+ * directly.
+ */
+
+static dwc_otg_core_global_regs_t *global_regs;
+static dwc_otg_host_global_regs_t *hc_global_regs;
+static dwc_otg_hc_regs_t *hc_regs;
+static uint32_t *data_fifo;
+
+static void do_setup(void)
+{
+       gintsts_data_t gintsts;
+       hctsiz_data_t hctsiz;
+       hcchar_data_t hcchar;
+       haint_data_t haint;
+       hcint_data_t hcint;
+
+       /* Enable HAINTs */
+       DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
+
+       /* Enable HCINTs */
+       DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Read HAINT */
+       haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+       /* Read HCINT */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+       /* Read HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* Clear HCINT */
+       DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /*
+        * Send Setup packet (Get Device Descriptor)
+        */
+
+       /* Make sure channel is disabled */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       if (hcchar.b.chen) {
+               hcchar.b.chdis = 1;
+//              hcchar.b.chen = 1;
+               DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+               //sleep(1);
+               dwc_mdelay(1000);
+
+               /* Read GINTSTS */
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+               /* Read HAINT */
+               haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+               /* Read HCINT */
+               hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+               /* Read HCCHAR */
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+               /* Clear HCINT */
+               DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+               /* Clear HAINT */
+               DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+               /* Clear GINTSTS */
+               DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       }
+
+       /* Set HCTSIZ */
+       hctsiz.d32 = 0;
+       hctsiz.b.xfersize = 8;
+       hctsiz.b.pktcnt = 1;
+       hctsiz.b.pid = DWC_OTG_HC_PID_SETUP;
+       DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+       /* Set HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.epdir = 0;
+       hcchar.b.epnum = 0;
+       hcchar.b.mps = 8;
+       hcchar.b.chen = 1;
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+       /* Fill FIFO with Setup data for Get Device Descriptor */
+       data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
+       DWC_WRITE_REG32(data_fifo++, 0x01000680);
+       DWC_WRITE_REG32(data_fifo++, 0x00080000);
+
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Wait for host channel interrupt */
+       do {
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+       } while (gintsts.b.hcintr == 0);
+
+       /* Disable HCINTs */
+       DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
+
+       /* Disable HAINTs */
+       DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
+
+       /* Read HAINT */
+       haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+       /* Read HCINT */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+       /* Read HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* Clear HCINT */
+       DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+}
+
+static void do_in_ack(void)
+{
+       gintsts_data_t gintsts;
+       hctsiz_data_t hctsiz;
+       hcchar_data_t hcchar;
+       haint_data_t haint;
+       hcint_data_t hcint;
+       host_grxsts_data_t grxsts;
+
+       /* Enable HAINTs */
+       DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
+
+       /* Enable HCINTs */
+       DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Read HAINT */
+       haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+       /* Read HCINT */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+       /* Read HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* Clear HCINT */
+       DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /*
+        * Receive Control In packet
+        */
+
+       /* Make sure channel is disabled */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       if (hcchar.b.chen) {
+               hcchar.b.chdis = 1;
+               hcchar.b.chen = 1;
+               DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+               //sleep(1);
+               dwc_mdelay(1000);
+
+               /* Read GINTSTS */
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+               /* Read HAINT */
+               haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+               /* Read HCINT */
+               hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+               /* Read HCCHAR */
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+               /* Clear HCINT */
+               DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+               /* Clear HAINT */
+               DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+               /* Clear GINTSTS */
+               DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       }
+
+       /* Set HCTSIZ */
+       hctsiz.d32 = 0;
+       hctsiz.b.xfersize = 8;
+       hctsiz.b.pktcnt = 1;
+       hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+       DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+       /* Set HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.epdir = 1;
+       hcchar.b.epnum = 0;
+       hcchar.b.mps = 8;
+       hcchar.b.chen = 1;
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Wait for receive status queue interrupt */
+       do {
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+       } while (gintsts.b.rxstsqlvl == 0);
+
+       /* Read RXSTS */
+       grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
+
+       /* Clear RXSTSQLVL in GINTSTS */
+       gintsts.d32 = 0;
+       gintsts.b.rxstsqlvl = 1;
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       switch (grxsts.b.pktsts) {
+       case DWC_GRXSTS_PKTSTS_IN:
+               /* Read the data into the host buffer */
+               if (grxsts.b.bcnt > 0) {
+                       int i;
+                       int word_count = (grxsts.b.bcnt + 3) / 4;
+
+                       data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
+
+                       for (i = 0; i < word_count; i++) {
+                               (void)DWC_READ_REG32(data_fifo++);
+                       }
+               }
+               break;
+
+       default:
+               break;
+       }
+
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Wait for receive status queue interrupt */
+       do {
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+       } while (gintsts.b.rxstsqlvl == 0);
+
+       /* Read RXSTS */
+       grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
+
+       /* Clear RXSTSQLVL in GINTSTS */
+       gintsts.d32 = 0;
+       gintsts.b.rxstsqlvl = 1;
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       switch (grxsts.b.pktsts) {
+       case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+               break;
+
+       default:
+               break;
+       }
+
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Wait for host channel interrupt */
+       do {
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+       } while (gintsts.b.hcintr == 0);
+
+       /* Read HAINT */
+       haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+       /* Read HCINT */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+       /* Read HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* Clear HCINT */
+       DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+//      usleep(100000);
+//      mdelay(100);
+       dwc_mdelay(1);
+
+       /*
+        * Send handshake packet
+        */
+
+       /* Read HAINT */
+       haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+       /* Read HCINT */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+       /* Read HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* Clear HCINT */
+       DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Make sure channel is disabled */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       if (hcchar.b.chen) {
+               hcchar.b.chdis = 1;
+               hcchar.b.chen = 1;
+               DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+               //sleep(1);
+               dwc_mdelay(1000);
+
+               /* Read GINTSTS */
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+               /* Read HAINT */
+               haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+               /* Read HCINT */
+               hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+               /* Read HCCHAR */
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+               /* Clear HCINT */
+               DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+               /* Clear HAINT */
+               DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+               /* Clear GINTSTS */
+               DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       }
+
+       /* Set HCTSIZ */
+       hctsiz.d32 = 0;
+       hctsiz.b.xfersize = 0;
+       hctsiz.b.pktcnt = 1;
+       hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+       DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+       /* Set HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.epdir = 0;
+       hcchar.b.epnum = 0;
+       hcchar.b.mps = 8;
+       hcchar.b.chen = 1;
+       DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+       /* Wait for host channel interrupt */
+       do {
+               gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+       } while (gintsts.b.hcintr == 0);
+
+       /* Disable HCINTs */
+       DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
+
+       /* Disable HAINTs */
+       DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
+
+       /* Read HAINT */
+       haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+       /* Read HCINT */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+       /* Read HCCHAR */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+       /* Clear HCINT */
+       DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+}
+#endif
+
+/** Handles hub class-specific requests. */
+int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
+                           uint16_t typeReq,
+                           uint16_t wValue,
+                           uint16_t wIndex, uint8_t * buf, uint16_t wLength)
+{
+       int retval = 0;
+
+       dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+       usb_hub_descriptor_t *hub_desc;
+       hprt0_data_t hprt0 = {.d32 = 0 };
+
+       uint32_t port_status;
+
+       switch (typeReq) {
+       case UCR_CLEAR_HUB_FEATURE:
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                           "ClearHubFeature 0x%x\n", wValue);
+               switch (wValue) {
+               case UHF_C_HUB_LOCAL_POWER:
+               case UHF_C_HUB_OVER_CURRENT:
+                       /* Nothing required here */
+                       break;
+               default:
+                       retval = -DWC_E_INVALID;
+                       DWC_ERROR("DWC OTG HCD - "
+                                 "ClearHubFeature request %xh unknown\n",
+                                 wValue);
+               }
+               break;
+       case UCR_CLEAR_PORT_FEATURE:
+#ifdef CONFIG_USB_DWC_OTG_LPM
+               if (wValue != UHF_PORT_L1)
+#endif
+                       if (!wIndex || wIndex > 1)
+                               goto error;
+
+               switch (wValue) {
+               case UHF_PORT_ENABLE:
+                       DWC_DEBUGPL(DBG_ANY, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_ENABLE\n");
+                       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                       hprt0.b.prtena = 1;
+                       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                       break;
+               case UHF_PORT_SUSPEND:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
+
+                       if (core_if->power_down == 2) {
+                               dwc_otg_host_hibernation_restore(core_if, 0, 0);
+                       } else {
+                               DWC_WRITE_REG32(core_if->pcgcctl, 0);
+                               dwc_mdelay(5);
+
+                               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                               hprt0.b.prtres = 1;
+                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                               hprt0.b.prtsusp = 0;
+                               /* Clear Resume bit */
+                               dwc_mdelay(100);
+                               hprt0.b.prtres = 0;
+                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                       }
+                       break;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+               case UHF_PORT_L1:
+                       {
+                               pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                               glpmcfg_data_t lpmcfg = {.d32 = 0 };
+
+                               lpmcfg.d32 =
+                                   DWC_READ_REG32(&core_if->
+                                                  core_global_regs->glpmcfg);
+                               lpmcfg.b.en_utmi_sleep = 0;
+                               lpmcfg.b.hird_thres &= (~(1 << 4));
+                               lpmcfg.b.prt_sleep_sts = 1;
+                               DWC_WRITE_REG32(&core_if->
+                                               core_global_regs->glpmcfg,
+                                               lpmcfg.d32);
+
+                               /* Clear Enbl_L1Gating bit. */
+                               pcgcctl.b.enbl_sleep_gating = 1;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32,
+                                                0);
+
+                               dwc_mdelay(5);
+
+                               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                               hprt0.b.prtres = 1;
+                               DWC_WRITE_REG32(core_if->host_if->hprt0,
+                                               hprt0.d32);
+                               /* This bit will be cleared in wakeup interrupt handle */
+                               break;
+                       }
+#endif
+               case UHF_PORT_POWER:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_POWER\n");
+                       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                       hprt0.b.prtpwr = 0;
+                       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                       break;
+               case UHF_PORT_INDICATOR:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_INDICATOR\n");
+                       /* Port inidicator not supported */
+                       break;
+               case UHF_C_PORT_CONNECTION:
+                       /* Clears drivers internal connect status change
+                        * flag */
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n");
+                       dwc_otg_hcd->flags.b.port_connect_status_change = 0;
+                       break;
+               case UHF_C_PORT_RESET:
+                       /* Clears the driver's internal Port Reset Change
+                        * flag */
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_C_RESET\n");
+                       dwc_otg_hcd->flags.b.port_reset_change = 0;
+                       break;
+               case UHF_C_PORT_ENABLE:
+                       /* Clears the driver's internal Port
+                        * Enable/Disable Change flag */
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n");
+                       dwc_otg_hcd->flags.b.port_enable_change = 0;
+                       break;
+               case UHF_C_PORT_SUSPEND:
+                       /* Clears the driver's internal Port Suspend
+                        * Change flag, which is set when resume signaling on
+                        * the host port is complete */
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n");
+                       dwc_otg_hcd->flags.b.port_suspend_change = 0;
+                       break;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+               case UHF_C_PORT_L1:
+                       dwc_otg_hcd->flags.b.port_l1_change = 0;
+                       break;
+#endif
+               case UHF_C_PORT_OVER_CURRENT:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n");
+                       dwc_otg_hcd->flags.b.port_over_current_change = 0;
+                       break;
+               default:
+                       retval = -DWC_E_INVALID;
+                       DWC_ERROR("DWC OTG HCD - "
+                                 "ClearPortFeature request %xh "
+                                 "unknown or unsupported\n", wValue);
+               }
+               break;
+       case UCR_GET_HUB_DESCRIPTOR:
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                           "GetHubDescriptor\n");
+               hub_desc = (usb_hub_descriptor_t *) buf;
+               hub_desc->bDescLength = 9;
+               hub_desc->bDescriptorType = 0x29;
+               hub_desc->bNbrPorts = 1;
+               USETW(hub_desc->wHubCharacteristics, 0x08);
+               hub_desc->bPwrOn2PwrGood = 1;
+               hub_desc->bHubContrCurrent = 0;
+               hub_desc->DeviceRemovable[0] = 0;
+               hub_desc->DeviceRemovable[1] = 0xff;
+               break;
+       case UCR_GET_HUB_STATUS:
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                           "GetHubStatus\n");
+               DWC_MEMSET(buf, 0, 4);
+               break;
+       case UCR_GET_PORT_STATUS:
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                           "GetPortStatus wIndex = 0x%04x FLAGS=0x%08x\n",
+                           wIndex, dwc_otg_hcd->flags.d32);
+               if (!wIndex || wIndex > 1)
+                       goto error;
+
+               port_status = 0;
+
+               if (dwc_otg_hcd->flags.b.port_connect_status_change)
+                       port_status |= (1 << UHF_C_PORT_CONNECTION);
+
+               if (dwc_otg_hcd->flags.b.port_enable_change)
+                       port_status |= (1 << UHF_C_PORT_ENABLE);
+
+               if (dwc_otg_hcd->flags.b.port_suspend_change)
+                       port_status |= (1 << UHF_C_PORT_SUSPEND);
+
+               if (dwc_otg_hcd->flags.b.port_l1_change)
+                       port_status |= (1 << UHF_C_PORT_L1);
+
+               if (dwc_otg_hcd->flags.b.port_reset_change) {
+                       port_status |= (1 << UHF_C_PORT_RESET);
+               }
+
+               if (dwc_otg_hcd->flags.b.port_over_current_change) {
+                       DWC_WARN("Overcurrent change detected\n");
+                       port_status |= (1 << UHF_C_PORT_OVER_CURRENT);
+               }
+
+               if (!dwc_otg_hcd->flags.b.port_connect_status) {
+                       /*
+                        * The port is disconnected, which means the core is
+                        * either in device mode or it soon will be. Just
+                        * return 0's for the remainder of the port status
+                        * since the port register can't be read if the core
+                        * is in device mode.
+                        */
+                       *((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
+                       break;
+               }
+
+               hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+               DWC_DEBUGPL(DBG_HCDV, "  HPRT0: 0x%08x\n", hprt0.d32);
+
+               if (hprt0.b.prtconnsts)
+                       port_status |= (1 << UHF_PORT_CONNECTION);
+
+               if (hprt0.b.prtena)
+                       port_status |= (1 << UHF_PORT_ENABLE);
+
+               if (hprt0.b.prtsusp)
+                       port_status |= (1 << UHF_PORT_SUSPEND);
+
+               if (hprt0.b.prtovrcurract)
+                       port_status |= (1 << UHF_PORT_OVER_CURRENT);
+
+               if (hprt0.b.prtrst)
+                       port_status |= (1 << UHF_PORT_RESET);
+
+               if (hprt0.b.prtpwr)
+                       port_status |= (1 << UHF_PORT_POWER);
+
+               if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
+                       port_status |= (1 << UHF_PORT_HIGH_SPEED);
+               else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED)
+                       port_status |= (1 << UHF_PORT_LOW_SPEED);
+
+               if (hprt0.b.prttstctl)
+                       port_status |= (1 << UHF_PORT_TEST);
+               if (dwc_otg_get_lpm_portsleepstatus(dwc_otg_hcd->core_if)) {
+                       port_status |= (1 << UHF_PORT_L1);
+               }
+               /*
+                  For Synopsys HW emulation of Power down wkup_control asserts the 
+                  hreset_n and prst_n on suspned. This causes the HPRT0 to be zero. 
+                  We intentionally tell the software that port is in L2Suspend state. 
+                  Only for STE.
+               */
+               if ((core_if->power_down == 2)
+                   && (core_if->hibernation_suspend == 1)) {
+                       port_status |= (1 << UHF_PORT_SUSPEND);
+               }
+               /* USB_PORT_FEAT_INDICATOR unsupported always 0 */
+
+               *((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
+
+               break;
+       case UCR_SET_HUB_FEATURE:
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                           "SetHubFeature\n");
+               /* No HUB features supported */
+               break;
+       case UCR_SET_PORT_FEATURE:
+               if (wValue != UHF_PORT_TEST && (!wIndex || wIndex > 1))
+                       goto error;
+
+               if (!dwc_otg_hcd->flags.b.port_connect_status) {
+                       /*
+                        * The port is disconnected, which means the core is
+                        * either in device mode or it soon will be. Just
+                        * return without doing anything since the port
+                        * register can't be written if the core is in device
+                        * mode.
+                        */
+                       break;
+               }
+
+               switch (wValue) {
+               case UHF_PORT_SUSPEND:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
+                       if (dwc_otg_hcd_otg_port(dwc_otg_hcd) != wIndex) {
+                               goto error;
+                       }
+                       if (core_if->power_down == 2) {
+                               int timeout = 300;
+                               dwc_irqflags_t flags;
+                               pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                               gpwrdn_data_t gpwrdn = {.d32 = 0 };
+                               gusbcfg_data_t gusbcfg = {.d32 = 0 };
+#ifdef DWC_DEV_SRPCAP
+                               int32_t otg_cap_param = core_if->core_params->otg_cap;
+#endif
+                               DWC_PRINTF("Preparing for complete power-off\n");
+
+                               /* Save registers before hibernation */
+                               dwc_otg_save_global_regs(core_if);
+                               dwc_otg_save_host_regs(core_if);
+
+                               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                               hprt0.b.prtsusp = 1;
+                               hprt0.b.prtena = 0;
+                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                               /* Spin hprt0.b.prtsusp to became 1 */
+                               do {
+                                       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                                       if (hprt0.b.prtsusp) {
+                                               break;
+                                       }
+                                       dwc_mdelay(1);
+                               } while (--timeout);
+                               if (!timeout) {
+                                       DWC_WARN("Suspend wasn't genereted\n");
+                               }
+                               dwc_udelay(10);
+
+                               /*
+                                * We need to disable interrupts to prevent servicing of any IRQ
+                                * during going to hibernation
+                                */
+                               DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+                               core_if->lx_state = DWC_OTG_L2;
+#ifdef DWC_DEV_SRPCAP
+                               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                               hprt0.b.prtpwr = 0;
+                               hprt0.b.prtena = 0;
+                               DWC_WRITE_REG32(core_if->host_if->hprt0,
+                                               hprt0.d32);
+#endif
+                               gusbcfg.d32 =
+                                   DWC_READ_REG32(&core_if->core_global_regs->
+                                                  gusbcfg);
+                               if (gusbcfg.b.ulpi_utmi_sel == 1) {
+                                       /* ULPI interface */
+                                       /* Suspend the Phy Clock */
+                                       pcgcctl.d32 = 0;
+                                       pcgcctl.b.stoppclk = 1;
+                                       DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+                                                        pcgcctl.d32);
+                                       dwc_udelay(10);
+                                       gpwrdn.b.pmuactv = 1;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        core_global_regs->
+                                                        gpwrdn, 0, gpwrdn.d32);
+                               } else {
+                                       /* UTMI+ Interface */
+                                       gpwrdn.b.pmuactv = 1;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        core_global_regs->
+                                                        gpwrdn, 0, gpwrdn.d32);
+                                       dwc_udelay(10);
+                                       pcgcctl.b.stoppclk = 1;
+                                       DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+                                       dwc_udelay(10);
+                               }
+#ifdef DWC_DEV_SRPCAP                          
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.dis_vbus = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+#endif
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuintsel = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_udelay(10);
+
+                               gpwrdn.d32 = 0;
+#ifdef DWC_DEV_SRPCAP
+                               gpwrdn.b.srp_det_msk = 1;
+#endif
+                               gpwrdn.b.disconn_det_msk = 1;
+                               gpwrdn.b.lnstchng_msk = 1;
+                               gpwrdn.b.sts_chngint_msk = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_udelay(10);
+
+                               /* Enable Power Down Clamp and all interrupts in GPWRDN */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pwrdnclmp = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+                               dwc_udelay(10);
+
+                               /* Switch off VDD */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pwrdnswtch = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+
+#ifdef DWC_DEV_SRPCAP
+                               if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE)
+                               {
+                                       core_if->pwron_timer_started = 1;
+                                       DWC_TIMER_SCHEDULE(core_if->pwron_timer, 6000 /* 6 secs */ );
+                               }
+#endif
+                               /* Save gpwrdn register for further usage if stschng interrupt */
+                               core_if->gr_backup->gpwrdn_local =
+                                               DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+                               /* Set flag to indicate that we are in hibernation */
+                               core_if->hibernation_suspend = 1;
+                               DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock,flags);
+
+                               DWC_PRINTF("Host hibernation completed\n");
+                               // Exit from case statement
+                               break;
+
+                       }
+                       if (dwc_otg_hcd_otg_port(dwc_otg_hcd) == wIndex &&
+                           dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
+                               gotgctl_data_t gotgctl = {.d32 = 0 };
+                               gotgctl.b.hstsethnpen = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gotgctl, 0, gotgctl.d32);
+                               core_if->op_state = A_SUSPEND;
+                       }
+                       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                       hprt0.b.prtsusp = 1;
+                       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                       {
+                               dwc_irqflags_t flags;
+                               /* Update lx_state */
+                               DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+                               core_if->lx_state = DWC_OTG_L2;
+                               DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+                       }
+                       /* Suspend the Phy Clock */
+                       {
+                               pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                               pcgcctl.b.stoppclk = 1;
+                               DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+                                                pcgcctl.d32);
+                               dwc_udelay(10);
+                       }
+
+                       /* For HNP the bus must be suspended for at least 200ms. */
+                       if (dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
+                               pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                               pcgcctl.b.stoppclk = 1;
+                DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+                               dwc_mdelay(200);
+                       }
+
+                       /** @todo - check how sw can wait for 1 sec to check asesvld??? */
+#if 0 //vahrama !!!!!!!!!!!!!!!!!!
+                       if (core_if->adp_enable) {
+                               gotgctl_data_t gotgctl = {.d32 = 0 };
+                               gpwrdn_data_t gpwrdn;
+
+                               while (gotgctl.b.asesvld == 1) {
+                                       gotgctl.d32 =
+                                           DWC_READ_REG32(&core_if->
+                                                          core_global_regs->
+                                                          gotgctl);
+                                       dwc_mdelay(100);
+                               }
+
+                               /* Enable Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+
+                               /* Unmask SRP detected interrupt from Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.srp_det_msk = 1;
+                               DWC_MODIFY_REG32(&core_if->core_global_regs->
+                                                gpwrdn, 0, gpwrdn.d32);
+
+                               dwc_otg_adp_probe_start(core_if);
+                       }
+#endif
+                       break;
+               case UHF_PORT_POWER:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "SetPortFeature - USB_PORT_FEAT_POWER\n");
+                       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                       hprt0.b.prtpwr = 1;
+                       DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                       break;
+               case UHF_PORT_RESET:
+                       if ((core_if->power_down == 2)
+                           && (core_if->hibernation_suspend == 1)) {
+                               /* If we are going to exit from Hibernated
+                                * state via USB RESET.
+                                */
+                               dwc_otg_host_hibernation_restore(core_if, 0, 1);
+                       } else {
+                               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+
+                               DWC_DEBUGPL(DBG_HCD,
+                                           "DWC OTG HCD HUB CONTROL - "
+                                           "SetPortFeature - USB_PORT_FEAT_RESET\n");
+                               {
+                                       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+                                       pcgcctl.b.enbl_sleep_gating = 1;
+                                       pcgcctl.b.stoppclk = 1;
+                                       DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+                                       DWC_WRITE_REG32(core_if->pcgcctl, 0);
+                               }
+#ifdef CONFIG_USB_DWC_OTG_LPM
+                               {
+                                       glpmcfg_data_t lpmcfg;
+                                       lpmcfg.d32 =
+                                               DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+                                       if (lpmcfg.b.prt_sleep_sts) {
+                                               lpmcfg.b.en_utmi_sleep = 0;
+                                               lpmcfg.b.hird_thres &= (~(1 << 4));
+                                               DWC_WRITE_REG32
+                                                   (&core_if->core_global_regs->glpmcfg,
+                                                    lpmcfg.d32);
+                                               dwc_mdelay(1);
+                                       }
+                               }
+#endif
+                               hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                               /* Clear suspend bit if resetting from suspended state. */
+                               hprt0.b.prtsusp = 0;
+                               /* When B-Host the Port reset bit is set in
+                                * the Start HCD Callback function, so that
+                                * the reset is started within 1ms of the HNP
+                                * success interrupt. */
+                               if (!dwc_otg_hcd_is_b_host(dwc_otg_hcd)) {
+                                       hprt0.b.prtpwr = 1;
+                                       hprt0.b.prtrst = 1;
+                                       DWC_PRINTF("Indeed it is in host mode hprt0 = %08x\n",hprt0.d32);
+                                       DWC_WRITE_REG32(core_if->host_if->hprt0,
+                                                       hprt0.d32);
+                               }
+                               /* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */
+                               dwc_mdelay(60);
+                               hprt0.b.prtrst = 0;
+                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                               core_if->lx_state = DWC_OTG_L0; /* Now back to the on state */
+                       }
+                       break;
+#ifdef DWC_HS_ELECT_TST
+               case UHF_PORT_TEST:
+                       {
+                               uint32_t t;
+                               gintmsk_data_t gintmsk;
+
+                               t = (wIndex >> 8);      /* MSB wIndex USB */
+                               DWC_DEBUGPL(DBG_HCD,
+                                           "DWC OTG HCD HUB CONTROL - "
+                                           "SetPortFeature - USB_PORT_FEAT_TEST %d\n",
+                                           t);
+                               DWC_WARN("USB_PORT_FEAT_TEST %d\n", t);
+                               if (t < 6) {
+                                       hprt0.d32 = dwc_otg_read_hprt0(core_if);
+                                       hprt0.b.prttstctl = t;
+                                       DWC_WRITE_REG32(core_if->host_if->hprt0,
+                                                       hprt0.d32);
+                               } else {
+                                       /* Setup global vars with reg addresses (quick and
+                                        * dirty hack, should be cleaned up)
+                                        */
+                                       global_regs = core_if->core_global_regs;
+                                       hc_global_regs =
+                                           core_if->host_if->host_global_regs;
+                                       hc_regs =
+                                           (dwc_otg_hc_regs_t *) ((char *)
+                                                                  global_regs +
+                                                                  0x500);
+                                       data_fifo =
+                                           (uint32_t *) ((char *)global_regs +
+                                                         0x1000);
+
+                                       if (t == 6) {   /* HS_HOST_PORT_SUSPEND_RESUME */
+                                               /* Save current interrupt mask */
+                                               gintmsk.d32 =
+                                                   DWC_READ_REG32
+                                                   (&global_regs->gintmsk);
+
+                                               /* Disable all interrupts while we muck with
+                                                * the hardware directly
+                                                */
+                                               DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+                                               /* 15 second delay per the test spec */
+                                               dwc_mdelay(15000);
+
+                                               /* Drive suspend on the root port */
+                                               hprt0.d32 =
+                                                   dwc_otg_read_hprt0(core_if);
+                                               hprt0.b.prtsusp = 1;
+                                               hprt0.b.prtres = 0;
+                                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+                                               /* 15 second delay per the test spec */
+                                               dwc_mdelay(15000);
+
+                                               /* Drive resume on the root port */
+                                               hprt0.d32 =
+                                                   dwc_otg_read_hprt0(core_if);
+                                               hprt0.b.prtsusp = 0;
+                                               hprt0.b.prtres = 1;
+                                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+                                               dwc_mdelay(100);
+
+                                               /* Clear the resume bit */
+                                               hprt0.b.prtres = 0;
+                                               DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+                                               /* Restore interrupts */
+                                               DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
+                                       } else if (t == 7) {    /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
+                                               /* Save current interrupt mask */
+                                               gintmsk.d32 =
+                                                   DWC_READ_REG32
+                                                   (&global_regs->gintmsk);
+
+                                               /* Disable all interrupts while we muck with
+                                                * the hardware directly
+                                                */
+                                               DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+                                               /* 15 second delay per the test spec */
+                                               dwc_mdelay(15000);
+
+                                               /* Send the Setup packet */
+                                               do_setup();
+
+                                               /* 15 second delay so nothing else happens for awhile */
+                                               dwc_mdelay(15000);
+
+                                               /* Restore interrupts */
+                                               DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
+                                       } else if (t == 8) {    /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
+                                               /* Save current interrupt mask */
+                                               gintmsk.d32 =
+                                                   DWC_READ_REG32
+                                                   (&global_regs->gintmsk);
+
+                                               /* Disable all interrupts while we muck with
+                                                * the hardware directly
+                                                */
+                                               DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+                                               /* Send the Setup packet */
+                                               do_setup();
+
+                                               /* 15 second delay so nothing else happens for awhile */
+                                               dwc_mdelay(15000);
+
+                                               /* Send the In and Ack packets */
+                                               do_in_ack();
+
+                                               /* 15 second delay so nothing else happens for awhile */
+                                               dwc_mdelay(15000);
+
+                                               /* Restore interrupts */
+                                               DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
+                                       }
+                               }
+                               break;
+                       }
+#endif /* DWC_HS_ELECT_TST */
+
+               case UHF_PORT_INDICATOR:
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                   "SetPortFeature - USB_PORT_FEAT_INDICATOR\n");
+                       /* Not supported */
+                       break;
+               default:
+                       retval = -DWC_E_INVALID;
+                       DWC_ERROR("DWC OTG HCD - "
+                                 "SetPortFeature request %xh "
+                                 "unknown or unsupported\n", wValue);
+                       break;
+               }
+               break;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       case UCR_SET_AND_TEST_PORT_FEATURE:
+               if (wValue != UHF_PORT_L1) {
+                       goto error;
+               }
+               {
+                       int portnum, hird, devaddr, remwake;
+                       glpmcfg_data_t lpmcfg;
+                       uint32_t time_usecs;
+                       gintsts_data_t gintsts;
+                       gintmsk_data_t gintmsk;
+
+                       if (!dwc_otg_get_param_lpm_enable(core_if)) {
+                               goto error;
+                       }
+                       if (wValue != UHF_PORT_L1 || wLength != 1) {
+                               goto error;
+                       }
+                       /* Check if the port currently is in SLEEP state */
+                       lpmcfg.d32 =
+                           DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+                       if (lpmcfg.b.prt_sleep_sts) {
+                               DWC_INFO("Port is already in sleep mode\n");
+                               buf[0] = 0;     /* Return success */
+                               break;
+                       }
+
+                       portnum = wIndex & 0xf;
+                       hird = (wIndex >> 4) & 0xf;
+                       devaddr = (wIndex >> 8) & 0x7f;
+                       remwake = (wIndex >> 15);
+
+                       if (portnum != 1) {
+                               retval = -DWC_E_INVALID;
+                               DWC_WARN
+                                   ("Wrong port number(%d) in SetandTestPortFeature request\n",
+                                    portnum);
+                               break;
+                       }
+
+                       DWC_PRINTF
+                           ("SetandTestPortFeature request: portnum = %d, hird = %d, devaddr = %d, rewake = %d\n",
+                            portnum, hird, devaddr, remwake);
+                       /* Disable LPM interrupt */
+                       gintmsk.d32 = 0;
+                       gintmsk.b.lpmtranrcvd = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+                                        gintmsk.d32, 0);
+
+                       if (dwc_otg_hcd_send_lpm
+                           (dwc_otg_hcd, devaddr, hird, remwake)) {
+                               retval = -DWC_E_INVALID;
+                               break;
+                       }
+
+                       time_usecs = 10 * (lpmcfg.b.retry_count + 1);
+                       /* We will consider timeout if time_usecs microseconds pass,
+                        * and we don't receive LPM transaction status.
+                        * After receiving non-error responce(ACK/NYET/STALL) from device,
+                        *  core will set lpmtranrcvd bit.
+                        */
+                       do {
+                               gintsts.d32 =
+                                   DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+                               if (gintsts.b.lpmtranrcvd) {
+                                       break;
+                               }
+                               dwc_udelay(1);
+                       } while (--time_usecs);
+                       /* lpm_int bit will be cleared in LPM interrupt handler */
+
+                       /* Now fill status
+                        * 0x00 - Success
+                        * 0x10 - NYET
+                        * 0x11 - Timeout
+                        */
+                       if (!gintsts.b.lpmtranrcvd) {
+                               buf[0] = 0x3;   /* Completion code is Timeout */
+                               dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd);
+                       } else {
+                               lpmcfg.d32 =
+                                   DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+                               if (lpmcfg.b.lpm_resp == 0x3) {
+                                       /* ACK responce from the device */
+                                       buf[0] = 0x00;  /* Success */
+                               } else if (lpmcfg.b.lpm_resp == 0x2) {
+                                       /* NYET responce from the device */
+                                       buf[0] = 0x2;
+                               } else {
+                                       /* Otherwise responce with Timeout */
+                                       buf[0] = 0x3;
+                               }
+                       }
+                       DWC_PRINTF("Device responce to LPM trans is %x\n",
+                                  lpmcfg.b.lpm_resp);
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0,
+                                        gintmsk.d32);
+
+                       break;
+               }
+#endif /* CONFIG_USB_DWC_OTG_LPM */
+       default:
+error:
+               retval = -DWC_E_INVALID;
+               DWC_WARN("DWC OTG HCD - "
+                        "Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n",
+                        typeReq, wIndex, wValue);
+               break;
+       }
+
+       return retval;
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/** Returns index of host channel to perform LPM transaction. */
+int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd, uint8_t devaddr)
+{
+       dwc_otg_core_if_t *core_if = hcd->core_if;
+       dwc_hc_t *hc;
+       hcchar_data_t hcchar;
+       gintmsk_data_t gintmsk = {.d32 = 0 };
+
+       if (DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
+               DWC_PRINTF("No free channel to select for LPM transaction\n");
+               return -1;
+       }
+
+       hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
+
+       /* Mask host channel interrupts. */
+       gintmsk.b.hcintr = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+
+       /* Fill fields that core needs for LPM transaction */
+       hcchar.b.devaddr = devaddr;
+       hcchar.b.epnum = 0;
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.mps = 64;
+       hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
+       hcchar.b.epdir = 0;     /* OUT */
+       DWC_WRITE_REG32(&core_if->host_if->hc_regs[hc->hc_num]->hcchar,
+                       hcchar.d32);
+
+       /* Remove the host channel from the free list. */
+       DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
+
+       DWC_PRINTF("hcnum = %d devaddr = %d\n", hc->hc_num, devaddr);
+
+       return hc->hc_num;
+}
+
+/** Release hc after performing LPM transaction */
+void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd)
+{
+       dwc_hc_t *hc;
+       glpmcfg_data_t lpmcfg;
+       uint8_t hc_num;
+
+       lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
+       hc_num = lpmcfg.b.lpm_chan_index;
+
+       hc = hcd->hc_ptr_array[hc_num];
+
+       DWC_PRINTF("Freeing channel %d after LPM\n", hc_num);
+       /* Return host channel to free list */
+       DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
+}
+
+int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr, uint8_t hird,
+                        uint8_t bRemoteWake)
+{
+       glpmcfg_data_t lpmcfg;
+       pcgcctl_data_t pcgcctl = {.d32 = 0 };
+       int channel;
+
+       channel = dwc_otg_hcd_get_hc_for_lpm_tran(hcd, devaddr);
+       if (channel < 0) {
+               return channel;
+       }
+
+       pcgcctl.b.enbl_sleep_gating = 1;
+       DWC_MODIFY_REG32(hcd->core_if->pcgcctl, 0, pcgcctl.d32);
+
+       /* Read LPM config register */
+       lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
+
+       /* Program LPM transaction fields */
+       lpmcfg.b.rem_wkup_en = bRemoteWake;
+       lpmcfg.b.hird = hird;
+       lpmcfg.b.hird_thres = 0x1c;
+       lpmcfg.b.lpm_chan_index = channel;
+       lpmcfg.b.en_utmi_sleep = 1;
+       /* Program LPM config register */
+       DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+
+       /* Send LPM transaction */
+       lpmcfg.b.send_lpm = 1;
+       DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+
+       return 0;
+}
+
+#endif /* CONFIG_USB_DWC_OTG_LPM */
+
+int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port)
+{
+       int retval;
+
+       if (port != 1) {
+               return -DWC_E_INVALID;
+       }
+
+       retval = (hcd->flags.b.port_connect_status_change ||
+                 hcd->flags.b.port_reset_change ||
+                 hcd->flags.b.port_enable_change ||
+                 hcd->flags.b.port_suspend_change ||
+                 hcd->flags.b.port_over_current_change);
+#ifdef DEBUG
+       if (retval) {
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:"
+                           " Root port status changed\n");
+               DWC_DEBUGPL(DBG_HCDV, "  port_connect_status_change: %d\n",
+                           hcd->flags.b.port_connect_status_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_reset_change: %d\n",
+                           hcd->flags.b.port_reset_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_enable_change: %d\n",
+                           hcd->flags.b.port_enable_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_suspend_change: %d\n",
+                           hcd->flags.b.port_suspend_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_over_current_change: %d\n",
+                           hcd->flags.b.port_over_current_change);
+       }
+#endif
+       return retval;
+}
+
+int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       hfnum_data_t hfnum;
+       hfnum.d32 =
+           DWC_READ_REG32(&dwc_otg_hcd->core_if->host_if->host_global_regs->
+                          hfnum);
+
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n",
+                   hfnum.b.frnum);
+#endif
+       return hfnum.b.frnum;
+}
+
+int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
+                     struct dwc_otg_hcd_function_ops *fops)
+{
+       int retval = 0;
+
+       hcd->fops = fops;
+       if (!dwc_otg_is_device_mode(hcd->core_if) && 
+               (!hcd->core_if->adp_enable || hcd->core_if->adp.adp_started)) {
+               dwc_otg_hcd_reinit(hcd);
+       } else {
+               retval = -DWC_E_NO_DEVICE;
+       }
+
+       return retval;
+}
+
+void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd)
+{
+       return hcd->priv;
+}
+
+void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data)
+{
+       hcd->priv = priv_data;
+}
+
+uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd)
+{
+       return hcd->otg_port;
+}
+
+uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd)
+{
+       uint32_t is_b_host;
+       if (hcd->core_if->op_state == B_HOST) {
+               is_b_host = 1;
+       } else {
+               is_b_host = 0;
+       }
+
+       return is_b_host;
+}
+
+dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
+                                        int iso_desc_count, int atomic_alloc)
+{
+       dwc_otg_hcd_urb_t *dwc_otg_urb;
+       uint32_t size;
+
+       size =
+           sizeof(*dwc_otg_urb) +
+           iso_desc_count * sizeof(struct dwc_otg_hcd_iso_packet_desc);
+       if (atomic_alloc)
+               dwc_otg_urb = DWC_ALLOC_ATOMIC(size);
+       else
+               dwc_otg_urb = DWC_ALLOC(size);
+
+        if (NULL != dwc_otg_urb)
+                dwc_otg_urb->packet_count = iso_desc_count;
+        else {
+                dwc_otg_urb->packet_count = 0;
+                if (size != 0) {
+                        DWC_ERROR("**** DWC OTG HCD URB alloc - "
+                                  "%salloc of %db failed\n",
+                                  atomic_alloc?"atomic ":"", size);
+                }
+        }
+
+       return dwc_otg_urb;
+}
+
+void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * dwc_otg_urb,
+                                 uint8_t dev_addr, uint8_t ep_num,
+                                 uint8_t ep_type, uint8_t ep_dir, uint16_t mps)
+{
+       dwc_otg_hcd_fill_pipe(&dwc_otg_urb->pipe_info, dev_addr, ep_num,
+                             ep_type, ep_dir, mps);
+#if 0
+       DWC_PRINTF
+           ("addr = %d, ep_num = %d, ep_dir = 0x%x, ep_type = 0x%x, mps = %d\n",
+            dev_addr, ep_num, ep_dir, ep_type, mps);
+#endif
+}
+
+void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
+                               void *urb_handle, void *buf, dwc_dma_t dma,
+                               uint32_t buflen, void *setup_packet,
+                               dwc_dma_t setup_dma, uint32_t flags,
+                               uint16_t interval)
+{
+       dwc_otg_urb->priv = urb_handle;
+       dwc_otg_urb->buf = buf;
+       dwc_otg_urb->dma = dma;
+       dwc_otg_urb->length = buflen;
+       dwc_otg_urb->setup_packet = setup_packet;
+       dwc_otg_urb->setup_dma = setup_dma;
+       dwc_otg_urb->flags = flags;
+       dwc_otg_urb->interval = interval;
+       dwc_otg_urb->status = -DWC_E_IN_PROGRESS;
+}
+
+uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+       return dwc_otg_urb->status;
+}
+
+uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+       return dwc_otg_urb->actual_length;
+}
+
+uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+       return dwc_otg_urb->error_count;
+}
+
+void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
+                                        int desc_num, uint32_t offset,
+                                        uint32_t length)
+{
+       dwc_otg_urb->iso_descs[desc_num].offset = offset;
+       dwc_otg_urb->iso_descs[desc_num].length = length;
+}
+
+uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t * dwc_otg_urb,
+                                            int desc_num)
+{
+       return dwc_otg_urb->iso_descs[desc_num].status;
+}
+
+uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
+                                                   dwc_otg_urb, int desc_num)
+{
+       return dwc_otg_urb->iso_descs[desc_num].actual_length;
+}
+
+int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+       int allocated = 0;
+       dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+
+       if (qh) {
+               if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+                       allocated = 1;
+               }
+       }
+       return allocated;
+}
+
+int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+       dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+       int freed = 0;
+       DWC_ASSERT(qh, "qh is not allocated\n");
+
+       if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+               freed = 1;
+       }
+
+       return freed;
+}
+
+uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+       dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+       DWC_ASSERT(qh, "qh is not allocated\n");
+       return qh->usecs;
+}
+
+void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd)
+{
+#ifdef DEBUG
+       int num_channels;
+       int i;
+       gnptxsts_data_t np_tx_status;
+       hptxsts_data_t p_tx_status;
+
+       num_channels = hcd->core_if->core_params->host_channels;
+       DWC_PRINTF("\n");
+       DWC_PRINTF
+           ("************************************************************\n");
+       DWC_PRINTF("HCD State:\n");
+       DWC_PRINTF("  Num channels: %d\n", num_channels);
+       for (i = 0; i < num_channels; i++) {
+               dwc_hc_t *hc = hcd->hc_ptr_array[i];
+               DWC_PRINTF("  Channel %d:\n", i);
+               DWC_PRINTF("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+                          hc->dev_addr, hc->ep_num, hc->ep_is_in);
+               DWC_PRINTF("    speed: %d\n", hc->speed);
+               DWC_PRINTF("    ep_type: %d\n", hc->ep_type);
+               DWC_PRINTF("    max_packet: %d\n", hc->max_packet);
+               DWC_PRINTF("    data_pid_start: %d\n", hc->data_pid_start);
+               DWC_PRINTF("    multi_count: %d\n", hc->multi_count);
+               DWC_PRINTF("    xfer_started: %d\n", hc->xfer_started);
+               DWC_PRINTF("    xfer_buff: %p\n", hc->xfer_buff);
+               DWC_PRINTF("    xfer_len: %d\n", hc->xfer_len);
+               DWC_PRINTF("    xfer_count: %d\n", hc->xfer_count);
+               DWC_PRINTF("    halt_on_queue: %d\n", hc->halt_on_queue);
+               DWC_PRINTF("    halt_pending: %d\n", hc->halt_pending);
+               DWC_PRINTF("    halt_status: %d\n", hc->halt_status);
+               DWC_PRINTF("    do_split: %d\n", hc->do_split);
+               DWC_PRINTF("    complete_split: %d\n", hc->complete_split);
+               DWC_PRINTF("    hub_addr: %d\n", hc->hub_addr);
+               DWC_PRINTF("    port_addr: %d\n", hc->port_addr);
+               DWC_PRINTF("    xact_pos: %d\n", hc->xact_pos);
+               DWC_PRINTF("    requests: %d\n", hc->requests);
+               DWC_PRINTF("    qh: %p\n", hc->qh);
+               if (hc->xfer_started) {
+                       hfnum_data_t hfnum;
+                       hcchar_data_t hcchar;
+                       hctsiz_data_t hctsiz;
+                       hcint_data_t hcint;
+                       hcintmsk_data_t hcintmsk;
+                       hfnum.d32 =
+                           DWC_READ_REG32(&hcd->core_if->
+                                          host_if->host_global_regs->hfnum);
+                       hcchar.d32 =
+                           DWC_READ_REG32(&hcd->core_if->host_if->
+                                          hc_regs[i]->hcchar);
+                       hctsiz.d32 =
+                           DWC_READ_REG32(&hcd->core_if->host_if->
+                                          hc_regs[i]->hctsiz);
+                       hcint.d32 =
+                           DWC_READ_REG32(&hcd->core_if->host_if->
+                                          hc_regs[i]->hcint);
+                       hcintmsk.d32 =
+                           DWC_READ_REG32(&hcd->core_if->host_if->
+                                          hc_regs[i]->hcintmsk);
+                       DWC_PRINTF("    hfnum: 0x%08x\n", hfnum.d32);
+                       DWC_PRINTF("    hcchar: 0x%08x\n", hcchar.d32);
+                       DWC_PRINTF("    hctsiz: 0x%08x\n", hctsiz.d32);
+                       DWC_PRINTF("    hcint: 0x%08x\n", hcint.d32);
+                       DWC_PRINTF("    hcintmsk: 0x%08x\n", hcintmsk.d32);
+               }
+               if (hc->xfer_started && hc->qh) {
+                       dwc_otg_qtd_t *qtd;
+                       dwc_otg_hcd_urb_t *urb;
+                       
+                       DWC_CIRCLEQ_FOREACH(qtd, &hc->qh->qtd_list, qtd_list_entry) {
+                               if (!qtd->in_process)
+                                       break;
+                               
+                               urb = qtd->urb;
+                       DWC_PRINTF("    URB Info:\n");
+                       DWC_PRINTF("      qtd: %p, urb: %p\n", qtd, urb);
+                       if (urb) {
+                               DWC_PRINTF("      Dev: %d, EP: %d %s\n",
+                                          dwc_otg_hcd_get_dev_addr(&urb->
+                                                                   pipe_info),
+                                          dwc_otg_hcd_get_ep_num(&urb->
+                                                                 pipe_info),
+                                          dwc_otg_hcd_is_pipe_in(&urb->
+                                                                 pipe_info) ?
+                                          "IN" : "OUT");
+                               DWC_PRINTF("      Max packet size: %d\n",
+                                          dwc_otg_hcd_get_mps(&urb->
+                                                              pipe_info));
+                               DWC_PRINTF("      transfer_buffer: %p\n",
+                                          urb->buf);
+                               DWC_PRINTF("      transfer_dma: %p\n",
+                                          (void *)urb->dma);
+                               DWC_PRINTF("      transfer_buffer_length: %d\n",
+                                          urb->length);
+                                       DWC_PRINTF("      actual_length: %d\n",
+                                                  urb->actual_length);
+                               }
+                       }
+               }
+       }
+       DWC_PRINTF("  non_periodic_channels: %d\n", hcd->non_periodic_channels);
+       DWC_PRINTF("  periodic_channels: %d\n", hcd->periodic_channels);
+       DWC_PRINTF("  periodic_usecs: %d\n", hcd->periodic_usecs);
+       np_tx_status.d32 =
+           DWC_READ_REG32(&hcd->core_if->core_global_regs->gnptxsts);
+       DWC_PRINTF("  NP Tx Req Queue Space Avail: %d\n",
+                  np_tx_status.b.nptxqspcavail);
+       DWC_PRINTF("  NP Tx FIFO Space Avail: %d\n",
+                  np_tx_status.b.nptxfspcavail);
+       p_tx_status.d32 =
+           DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hptxsts);
+       DWC_PRINTF("  P Tx Req Queue Space Avail: %d\n",
+                  p_tx_status.b.ptxqspcavail);
+       DWC_PRINTF("  P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail);
+       dwc_otg_hcd_dump_frrem(hcd);
+       dwc_otg_dump_global_registers(hcd->core_if);
+       dwc_otg_dump_host_registers(hcd->core_if);
+       DWC_PRINTF
+           ("************************************************************\n");
+       DWC_PRINTF("\n");
+#endif
+}
+
+#ifdef DEBUG
+void dwc_print_setup_data(uint8_t * setup)
+{
+       int i;
+       if (CHK_DEBUG_LEVEL(DBG_HCD)) {
+               DWC_PRINTF("Setup Data = MSB ");
+               for (i = 7; i >= 0; i--)
+                       DWC_PRINTF("%02x ", setup[i]);
+               DWC_PRINTF("\n");
+               DWC_PRINTF("  bmRequestType Tranfer = %s\n",
+                          (setup[0] & 0x80) ? "Device-to-Host" :
+                          "Host-to-Device");
+               DWC_PRINTF("  bmRequestType Type = ");
+               switch ((setup[0] & 0x60) >> 5) {
+               case 0:
+                       DWC_PRINTF("Standard\n");
+                       break;
+               case 1:
+                       DWC_PRINTF("Class\n");
+                       break;
+               case 2:
+                       DWC_PRINTF("Vendor\n");
+                       break;
+               case 3:
+                       DWC_PRINTF("Reserved\n");
+                       break;
+               }
+               DWC_PRINTF("  bmRequestType Recipient = ");
+               switch (setup[0] & 0x1f) {
+               case 0:
+                       DWC_PRINTF("Device\n");
+                       break;
+               case 1:
+                       DWC_PRINTF("Interface\n");
+                       break;
+               case 2:
+                       DWC_PRINTF("Endpoint\n");
+                       break;
+               case 3:
+                       DWC_PRINTF("Other\n");
+                       break;
+               default:
+                       DWC_PRINTF("Reserved\n");
+                       break;
+               }
+               DWC_PRINTF("  bRequest = 0x%0x\n", setup[1]);
+               DWC_PRINTF("  wValue = 0x%0x\n", *((uint16_t *) & setup[2]));
+               DWC_PRINTF("  wIndex = 0x%0x\n", *((uint16_t *) & setup[4]));
+               DWC_PRINTF("  wLength = 0x%0x\n\n", *((uint16_t *) & setup[6]));
+       }
+}
+#endif
+
+void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd)
+{
+#if 0
+       DWC_PRINTF("Frame remaining at SOF:\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->frrem_samples, hcd->frrem_accum,
+                  (hcd->frrem_samples > 0) ?
+                  hcd->frrem_accum / hcd->frrem_samples : 0);
+
+       DWC_PRINTF("\n");
+       DWC_PRINTF("Frame remaining at start_transfer (uframe 7):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->core_if->hfnum_7_samples,
+                  hcd->core_if->hfnum_7_frrem_accum,
+                  (hcd->core_if->hfnum_7_samples >
+                   0) ? hcd->core_if->hfnum_7_frrem_accum /
+                  hcd->core_if->hfnum_7_samples : 0);
+       DWC_PRINTF("Frame remaining at start_transfer (uframe 0):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->core_if->hfnum_0_samples,
+                  hcd->core_if->hfnum_0_frrem_accum,
+                  (hcd->core_if->hfnum_0_samples >
+                   0) ? hcd->core_if->hfnum_0_frrem_accum /
+                  hcd->core_if->hfnum_0_samples : 0);
+       DWC_PRINTF("Frame remaining at start_transfer (uframe 1-6):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->core_if->hfnum_other_samples,
+                  hcd->core_if->hfnum_other_frrem_accum,
+                  (hcd->core_if->hfnum_other_samples >
+                   0) ? hcd->core_if->hfnum_other_frrem_accum /
+                  hcd->core_if->hfnum_other_samples : 0);
+
+       DWC_PRINTF("\n");
+       DWC_PRINTF("Frame remaining at sample point A (uframe 7):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->hfnum_7_samples_a, hcd->hfnum_7_frrem_accum_a,
+                  (hcd->hfnum_7_samples_a > 0) ?
+                  hcd->hfnum_7_frrem_accum_a / hcd->hfnum_7_samples_a : 0);
+       DWC_PRINTF("Frame remaining at sample point A (uframe 0):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->hfnum_0_samples_a, hcd->hfnum_0_frrem_accum_a,
+                  (hcd->hfnum_0_samples_a > 0) ?
+                  hcd->hfnum_0_frrem_accum_a / hcd->hfnum_0_samples_a : 0);
+       DWC_PRINTF("Frame remaining at sample point A (uframe 1-6):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->hfnum_other_samples_a, hcd->hfnum_other_frrem_accum_a,
+                  (hcd->hfnum_other_samples_a > 0) ?
+                  hcd->hfnum_other_frrem_accum_a /
+                  hcd->hfnum_other_samples_a : 0);
+
+       DWC_PRINTF("\n");
+       DWC_PRINTF("Frame remaining at sample point B (uframe 7):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->hfnum_7_samples_b, hcd->hfnum_7_frrem_accum_b,
+                  (hcd->hfnum_7_samples_b > 0) ?
+                  hcd->hfnum_7_frrem_accum_b / hcd->hfnum_7_samples_b : 0);
+       DWC_PRINTF("Frame remaining at sample point B (uframe 0):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->hfnum_0_samples_b, hcd->hfnum_0_frrem_accum_b,
+                  (hcd->hfnum_0_samples_b > 0) ?
+                  hcd->hfnum_0_frrem_accum_b / hcd->hfnum_0_samples_b : 0);
+       DWC_PRINTF("Frame remaining at sample point B (uframe 1-6):\n");
+       DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+                  hcd->hfnum_other_samples_b, hcd->hfnum_other_frrem_accum_b,
+                  (hcd->hfnum_other_samples_b > 0) ?
+                  hcd->hfnum_other_frrem_accum_b /
+                  hcd->hfnum_other_samples_b : 0);
+#endif
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd.h b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
new file mode 100644
index 0000000..8075595
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
@@ -0,0 +1,824 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.h $
+ * $Revision: #58 $
+ * $Date: 2011/09/15 $
+ * $Change: 1846647 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+#ifndef __DWC_HCD_H__
+#define __DWC_HCD_H__
+
+#include "dwc_otg_os_dep.h"
+#include "usb.h"
+#include "dwc_otg_hcd_if.h"
+#include "dwc_otg_core_if.h"
+#include "dwc_list.h"
+#include "dwc_otg_cil.h"
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Host Contoller Driver (HCD).
+ *
+ * The Host Controller Driver (HCD) is responsible for translating requests
+ * from the USB Driver into the appropriate actions on the DWC_otg controller.
+ * It isolates the USBD from the specifics of the controller by providing an
+ * API to the USBD.
+ */
+
+struct dwc_otg_hcd_pipe_info {
+       uint8_t dev_addr;
+       uint8_t ep_num;
+       uint8_t pipe_type;
+       uint8_t pipe_dir;
+       uint16_t mps;
+};
+
+struct dwc_otg_hcd_iso_packet_desc {
+       uint32_t offset;
+       uint32_t length;
+       uint32_t actual_length;
+       uint32_t status;
+};
+
+struct dwc_otg_qtd;
+
+struct dwc_otg_hcd_urb {
+       void *priv;
+       struct dwc_otg_qtd *qtd;
+       void *buf;
+       dwc_dma_t dma;
+       void *setup_packet;
+       dwc_dma_t setup_dma;
+       uint32_t length;
+       uint32_t actual_length;
+       uint32_t status;
+       uint32_t error_count;
+       uint32_t packet_count;
+       uint32_t flags;
+       uint16_t interval;
+       struct dwc_otg_hcd_pipe_info pipe_info;
+       struct dwc_otg_hcd_iso_packet_desc iso_descs[0];
+};
+
+static inline uint8_t dwc_otg_hcd_get_ep_num(struct dwc_otg_hcd_pipe_info *pipe)
+{
+       return pipe->ep_num;
+}
+
+static inline uint8_t dwc_otg_hcd_get_pipe_type(struct dwc_otg_hcd_pipe_info
+                                               *pipe)
+{
+       return pipe->pipe_type;
+}
+
+static inline uint16_t dwc_otg_hcd_get_mps(struct dwc_otg_hcd_pipe_info *pipe)
+{
+       return pipe->mps;
+}
+
+static inline uint8_t dwc_otg_hcd_get_dev_addr(struct dwc_otg_hcd_pipe_info
+                                              *pipe)
+{
+       return pipe->dev_addr;
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_isoc(struct dwc_otg_hcd_pipe_info
+                                              *pipe)
+{
+       return (pipe->pipe_type == UE_ISOCHRONOUS);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_int(struct dwc_otg_hcd_pipe_info
+                                             *pipe)
+{
+       return (pipe->pipe_type == UE_INTERRUPT);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_bulk(struct dwc_otg_hcd_pipe_info
+                                              *pipe)
+{
+       return (pipe->pipe_type == UE_BULK);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_control(struct dwc_otg_hcd_pipe_info
+                                                 *pipe)
+{
+       return (pipe->pipe_type == UE_CONTROL);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_in(struct dwc_otg_hcd_pipe_info *pipe)
+{
+       return (pipe->pipe_dir == UE_DIR_IN);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_out(struct dwc_otg_hcd_pipe_info
+                                             *pipe)
+{
+       return (!dwc_otg_hcd_is_pipe_in(pipe));
+}
+
+static inline void dwc_otg_hcd_fill_pipe(struct dwc_otg_hcd_pipe_info *pipe,
+                                        uint8_t devaddr, uint8_t ep_num,
+                                        uint8_t pipe_type, uint8_t pipe_dir,
+                                        uint16_t mps)
+{
+       pipe->dev_addr = devaddr;
+       pipe->ep_num = ep_num;
+       pipe->pipe_type = pipe_type;
+       pipe->pipe_dir = pipe_dir;
+       pipe->mps = mps;
+}
+
+/**
+ * Phases for control transfers.
+ */
+typedef enum dwc_otg_control_phase {
+       DWC_OTG_CONTROL_SETUP,
+       DWC_OTG_CONTROL_DATA,
+       DWC_OTG_CONTROL_STATUS
+} dwc_otg_control_phase_e;
+
+/** Transaction types. */
+typedef enum dwc_otg_transaction_type {
+       DWC_OTG_TRANSACTION_NONE,
+       DWC_OTG_TRANSACTION_PERIODIC,
+       DWC_OTG_TRANSACTION_NON_PERIODIC,
+       DWC_OTG_TRANSACTION_ALL
+} dwc_otg_transaction_type_e;
+
+struct dwc_otg_qh;
+
+/**
+ * A Queue Transfer Descriptor (QTD) holds the state of a bulk, control,
+ * interrupt, or isochronous transfer. A single QTD is created for each URB
+ * (of one of these types) submitted to the HCD. The transfer associated with
+ * a QTD may require one or multiple transactions.
+ *
+ * A QTD is linked to a Queue Head, which is entered in either the
+ * non-periodic or periodic schedule for execution. When a QTD is chosen for
+ * execution, some or all of its transactions may be executed. After
+ * execution, the state of the QTD is updated. The QTD may be retired if all
+ * its transactions are complete or if an error occurred. Otherwise, it
+ * remains in the schedule so more transactions can be executed later.
+ */
+typedef struct dwc_otg_qtd {
+       /**
+        * Determines the PID of the next data packet for the data phase of
+        * control transfers. Ignored for other transfer types.<br>
+        * One of the following values:
+        *      - DWC_OTG_HC_PID_DATA0
+        *      - DWC_OTG_HC_PID_DATA1
+        */
+       uint8_t data_toggle;
+
+       /** Current phase for control transfers (Setup, Data, or Status). */
+       dwc_otg_control_phase_e control_phase;
+
+       /** Keep track of the current split type
+        * for FS/LS endpoints on a HS Hub */
+       uint8_t complete_split;
+
+       /** How many bytes transferred during SSPLIT OUT */
+       uint32_t ssplit_out_xfer_count;
+
+       /**
+        * Holds the number of bus errors that have occurred for a transaction
+        * within this transfer.
+        */
+       uint8_t error_count;
+
+       /**
+        * Index of the next frame descriptor for an isochronous transfer. A
+        * frame descriptor describes the buffer position and length of the
+        * data to be transferred in the next scheduled (micro)frame of an
+        * isochronous transfer. It also holds status for that transaction.
+        * The frame index starts at 0.
+        */
+       uint16_t isoc_frame_index;
+
+       /** Position of the ISOC split on full/low speed */
+       uint8_t isoc_split_pos;
+
+       /** Position of the ISOC split in the buffer for the current frame */
+       uint16_t isoc_split_offset;
+
+       /** URB for this transfer */
+       struct dwc_otg_hcd_urb *urb;
+
+       struct dwc_otg_qh *qh;
+
+       /** This list of QTDs */
+        DWC_CIRCLEQ_ENTRY(dwc_otg_qtd) qtd_list_entry;
+
+       /** Indicates if this QTD is currently processed by HW. */
+       uint8_t in_process;
+
+       /** Number of DMA descriptors for this QTD */
+       uint8_t n_desc;
+
+       /** 
+        * Last activated frame(packet) index. 
+        * Used in Descriptor DMA mode only.
+        */
+       uint16_t isoc_frame_index_last;
+
+} dwc_otg_qtd_t;
+
+DWC_CIRCLEQ_HEAD(dwc_otg_qtd_list, dwc_otg_qtd);
+
+/**
+ * A Queue Head (QH) holds the static characteristics of an endpoint and
+ * maintains a list of transfers (QTDs) for that endpoint. A QH structure may
+ * be entered in either the non-periodic or periodic schedule.
+ */
+typedef struct dwc_otg_qh {
+       /**
+        * Endpoint type.
+        * One of the following values:
+        *      - UE_CONTROL
+        *      - UE_BULK
+        *      - UE_INTERRUPT
+        *      - UE_ISOCHRONOUS
+        */
+       uint8_t ep_type;
+       uint8_t ep_is_in;
+
+       /** wMaxPacketSize Field of Endpoint Descriptor. */
+       uint16_t maxp;
+
+       /**
+        * Device speed.
+        * One of the following values:
+        *      - DWC_OTG_EP_SPEED_LOW
+        *      - DWC_OTG_EP_SPEED_FULL
+        *      - DWC_OTG_EP_SPEED_HIGH
+        */
+       uint8_t dev_speed;
+
+       /**
+        * Determines the PID of the next data packet for non-control
+        * transfers. Ignored for control transfers.<br>
+        * One of the following values:
+        *      - DWC_OTG_HC_PID_DATA0
+        *      - DWC_OTG_HC_PID_DATA1
+        */
+       uint8_t data_toggle;
+
+       /** Ping state if 1. */
+       uint8_t ping_state;
+
+       /**
+        * List of QTDs for this QH.
+        */
+       struct dwc_otg_qtd_list qtd_list;
+
+       /** Host channel currently processing transfers for this QH. */
+       struct dwc_hc *channel;
+
+       /** Full/low speed endpoint on high-speed hub requires split. */
+       uint8_t do_split;
+
+       /** @name Periodic schedule information */
+       /** @{ */
+
+       /** Bandwidth in microseconds per (micro)frame. */
+       uint16_t usecs;
+
+       /** Interval between transfers in (micro)frames. */
+       uint16_t interval;
+
+       /**
+        * (micro)frame to initialize a periodic transfer. The transfer
+        * executes in the following (micro)frame.
+        */
+       uint16_t sched_frame;
+
+       /** (micro)frame at which last start split was initialized. */
+       uint16_t start_split_frame;
+
+       /** @} */
+
+       /** 
+        * Used instead of original buffer if 
+        * it(physical address) is not dword-aligned.
+        */
+       uint8_t *dw_align_buf;
+       dwc_dma_t dw_align_buf_dma;
+
+       /** Entry for QH in either the periodic or non-periodic schedule. */
+       dwc_list_link_t qh_list_entry;
+
+       /** @name Descriptor DMA support */
+       /** @{ */
+
+       /** Descriptor List. */
+       dwc_otg_host_dma_desc_t *desc_list;
+
+       /** Descriptor List physical address. */
+       dwc_dma_t desc_list_dma;
+
+       /** 
+        * Xfer Bytes array.
+        * Each element corresponds to a descriptor and indicates 
+        * original XferSize size value for the descriptor.
+        */
+       uint32_t *n_bytes;
+
+       /** Actual number of transfer descriptors in a list. */
+       uint16_t ntd;
+
+       /** First activated isochronous transfer descriptor index. */
+       uint8_t td_first;
+       /** Last activated isochronous transfer descriptor index. */
+       uint8_t td_last;
+
+       /** @} */
+
+
+       uint16_t speed;
+       uint16_t frame_usecs[8];
+} dwc_otg_qh_t;
+
+DWC_CIRCLEQ_HEAD(hc_list, dwc_hc);
+
+/**
+ * This structure holds the state of the HCD, including the non-periodic and
+ * periodic schedules.
+ */
+struct dwc_otg_hcd {
+       /** The DWC otg device pointer */
+       struct dwc_otg_device *otg_dev;
+       /** DWC OTG Core Interface Layer */
+       dwc_otg_core_if_t *core_if;
+
+       /** Function HCD driver callbacks */
+       struct dwc_otg_hcd_function_ops *fops;
+
+       /** Internal DWC HCD Flags */
+       volatile union dwc_otg_hcd_internal_flags {
+               uint32_t d32;
+               struct {
+                       unsigned port_connect_status_change:1;
+                       unsigned port_connect_status:1;
+                       unsigned port_reset_change:1;
+                       unsigned port_enable_change:1;
+                       unsigned port_suspend_change:1;
+                       unsigned port_over_current_change:1;
+                       unsigned port_l1_change:1;
+                       unsigned reserved:26;
+               } b;
+       } flags;
+
+       /**
+        * Inactive items in the non-periodic schedule. This is a list of
+        * Queue Heads. Transfers associated with these Queue Heads are not
+        * currently assigned to a host channel.
+        */
+       dwc_list_link_t non_periodic_sched_inactive;
+
+       /**
+        * Active items in the non-periodic schedule. This is a list of
+        * Queue Heads. Transfers associated with these Queue Heads are
+        * currently assigned to a host channel.
+        */
+       dwc_list_link_t non_periodic_sched_active;
+
+       /**
+        * Pointer to the next Queue Head to process in the active
+        * non-periodic schedule.
+        */
+       dwc_list_link_t *non_periodic_qh_ptr;
+
+       /**
+        * Inactive items in the periodic schedule. This is a list of QHs for
+        * periodic transfers that are _not_ scheduled for the next frame.
+        * Each QH in the list has an interval counter that determines when it
+        * needs to be scheduled for execution. This scheduling mechanism
+        * allows only a simple calculation for periodic bandwidth used (i.e.
+        * must assume that all periodic transfers may need to execute in the
+        * same frame). However, it greatly simplifies scheduling and should
+        * be sufficient for the vast majority of OTG hosts, which need to
+        * connect to a small number of peripherals at one time.
+        *
+        * Items move from this list to periodic_sched_ready when the QH
+        * interval counter is 0 at SOF.
+        */
+       dwc_list_link_t periodic_sched_inactive;
+
+       /**
+        * List of periodic QHs that are ready for execution in the next
+        * frame, but have not yet been assigned to host channels.
+        *
+        * Items move from this list to periodic_sched_assigned as host
+        * channels become available during the current frame.
+        */
+       dwc_list_link_t periodic_sched_ready;
+
+       /**
+        * List of periodic QHs to be executed in the next frame that are
+        * assigned to host channels.
+        *
+        * Items move from this list to periodic_sched_queued as the
+        * transactions for the QH are queued to the DWC_otg controller.
+        */
+       dwc_list_link_t periodic_sched_assigned;
+
+       /**
+        * List of periodic QHs that have been queued for execution.
+        *
+        * Items move from this list to either periodic_sched_inactive or
+        * periodic_sched_ready when the channel associated with the transfer
+        * is released. If the interval for the QH is 1, the item moves to
+        * periodic_sched_ready because it must be rescheduled for the next
+        * frame. Otherwise, the item moves to periodic_sched_inactive.
+        */
+       dwc_list_link_t periodic_sched_queued;
+
+       /**
+        * Total bandwidth claimed so far for periodic transfers. This value
+        * is in microseconds per (micro)frame. The assumption is that all
+        * periodic transfers may occur in the same (micro)frame.
+        */
+       uint16_t periodic_usecs;
+
+       /**
+        * Total bandwidth claimed so far for all periodic transfers
+        * in a frame.
+        * This will include a mixture of HS and FS transfers.
+        * Units are microseconds per (micro)frame.
+        * We have a budget per frame and have to schedule
+        * transactions accordingly.
+        * Watch out for the fact that things are actually scheduled for the
+        * "next frame".
+        */
+       uint16_t                frame_usecs[8];
+
+
+       /**
+        * Frame number read from the core at SOF. The value ranges from 0 to
+        * DWC_HFNUM_MAX_FRNUM.
+        */
+       uint16_t frame_number;
+
+       /**
+        * Count of periodic QHs, if using several eps. For SOF enable/disable.
+        */
+       uint16_t periodic_qh_count;
+
+       /**
+        * Free host channels in the controller. This is a list of
+        * dwc_hc_t items.
+        */
+       struct hc_list free_hc_list;
+       /**
+        * Number of host channels assigned to periodic transfers. Currently
+        * assuming that there is a dedicated host channel for each periodic
+        * transaction and at least one host channel available for
+        * non-periodic transactions.
+        */
+       int periodic_channels; /* microframe_schedule==0 */
+
+       /**
+        * Number of host channels assigned to non-periodic transfers.
+        */
+       int non_periodic_channels; /* microframe_schedule==0 */
+
+       /**
+        * Number of host channels assigned to non-periodic transfers.
+        */
+       int available_host_channels;
+
+       /**
+        * Array of pointers to the host channel descriptors. Allows accessing
+        * a host channel descriptor given the host channel number. This is
+        * useful in interrupt handlers.
+        */
+       struct dwc_hc *hc_ptr_array[MAX_EPS_CHANNELS];
+
+       /**
+        * Buffer to use for any data received during the status phase of a
+        * control transfer. Normally no data is transferred during the status
+        * phase. This buffer is used as a bit bucket.
+        */
+       uint8_t *status_buf;
+
+       /**
+        * DMA address for status_buf.
+        */
+       dma_addr_t status_buf_dma;
+#define DWC_OTG_HCD_STATUS_BUF_SIZE 64
+
+       /**
+        * Connection timer. An OTG host must display a message if the device
+        * does not connect. Started when the VBus power is turned on via
+        * sysfs attribute "buspower".
+        */
+       dwc_timer_t *conn_timer;
+
+       /* Tasket to do a reset */
+       dwc_tasklet_t *reset_tasklet;
+
+       /*  */
+       dwc_spinlock_t *lock;
+
+       /**
+        * Private data that could be used by OS wrapper.
+        */
+       void *priv;
+
+       uint8_t otg_port;
+
+       /** Frame List */
+       uint32_t *frame_list;
+
+       /** Frame List DMA address */
+       dma_addr_t frame_list_dma;
+
+#ifdef DEBUG
+       uint32_t frrem_samples;
+       uint64_t frrem_accum;
+
+       uint32_t hfnum_7_samples_a;
+       uint64_t hfnum_7_frrem_accum_a;
+       uint32_t hfnum_0_samples_a;
+       uint64_t hfnum_0_frrem_accum_a;
+       uint32_t hfnum_other_samples_a;
+       uint64_t hfnum_other_frrem_accum_a;
+
+       uint32_t hfnum_7_samples_b;
+       uint64_t hfnum_7_frrem_accum_b;
+       uint32_t hfnum_0_samples_b;
+       uint64_t hfnum_0_frrem_accum_b;
+       uint32_t hfnum_other_samples_b;
+       uint64_t hfnum_other_frrem_accum_b;
+#endif
+};
+
+/** @name Transaction Execution Functions */
+/** @{ */
+extern dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t
+                                                                 * hcd);
+extern void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
+                                          dwc_otg_transaction_type_e tr_type);
+
+/** @} */
+
+/** @name Interrupt Handler Functions */
+/** @{ */
+extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t *
+                                                        dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t *
+                                                       dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t *
+                                                          dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_incomplete_periodic_intr(dwc_otg_hcd_t *
+                                                          dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_conn_id_status_change_intr(dwc_otg_hcd_t *
+                                                            dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_disconnect_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * dwc_otg_hcd,
+                                           uint32_t num);
+extern int32_t dwc_otg_hcd_handle_session_req_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_wakeup_detected_intr(dwc_otg_hcd_t *
+                                                      dwc_otg_hcd);
+/** @} */
+
+/** @name Schedule Queue Functions */
+/** @{ */
+
+/* Implemented in dwc_otg_hcd_queue.c */
+extern dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t * hcd,
+                                          dwc_otg_hcd_urb_t * urb, int atomic_alloc);
+extern void dwc_otg_hcd_qh_free(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+                                     int sched_csplit);
+
+/** Remove and free a QH */
+static inline void dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd_t * hcd,
+                                                 dwc_otg_qh_t * qh)
+{
+       dwc_irqflags_t flags;
+       DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+       dwc_otg_hcd_qh_remove(hcd, qh);
+       DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+       dwc_otg_hcd_qh_free(hcd, qh);
+}
+
+/** Allocates memory for a QH structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc(int atomic_alloc)
+{
+       if (atomic_alloc)
+               return (dwc_otg_qh_t *) DWC_ALLOC_ATOMIC(sizeof(dwc_otg_qh_t));
+       else
+               return (dwc_otg_qh_t *) DWC_ALLOC(sizeof(dwc_otg_qh_t));
+}
+
+extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(dwc_otg_hcd_urb_t * urb,
+                                            int atomic_alloc);
+extern void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * qtd, dwc_otg_hcd_urb_t * urb);
+extern int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * qtd, dwc_otg_hcd_t * dwc_otg_hcd,
+                              dwc_otg_qh_t ** qh, int atomic_alloc);
+
+/** Allocates memory for a QTD structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc(int atomic_alloc)
+{
+       if (atomic_alloc)
+               return (dwc_otg_qtd_t *) DWC_ALLOC_ATOMIC(sizeof(dwc_otg_qtd_t));
+       else
+               return (dwc_otg_qtd_t *) DWC_ALLOC(sizeof(dwc_otg_qtd_t));
+}
+
+/** Frees the memory for a QTD structure.  QTD should already be removed from
+ * list.
+ * @param qtd QTD to free.*/
+static inline void dwc_otg_hcd_qtd_free(dwc_otg_qtd_t * qtd)
+{
+       DWC_FREE(qtd);
+}
+
+/** Removes a QTD from list.
+ * @param hcd HCD instance.
+ * @param qtd QTD to remove from list.
+ * @param qh QTD belongs to.
+ */
+static inline void dwc_otg_hcd_qtd_remove(dwc_otg_hcd_t * hcd,
+                                         dwc_otg_qtd_t * qtd,
+                                         dwc_otg_qh_t * qh)
+{
+       DWC_CIRCLEQ_REMOVE(&qh->qtd_list, qtd, qtd_list_entry);
+}
+
+/** Remove and free a QTD 
+  * Need to disable IRQ and hold hcd lock while calling this function out of 
+  * interrupt servicing chain */
+static inline void dwc_otg_hcd_qtd_remove_and_free(dwc_otg_hcd_t * hcd,
+                                                  dwc_otg_qtd_t * qtd,
+                                                  dwc_otg_qh_t * qh)
+{
+       dwc_otg_hcd_qtd_remove(hcd, qtd, qh);
+       dwc_otg_hcd_qtd_free(qtd);
+}
+
+/** @} */
+
+/** @name Descriptor DMA Supporting Functions */
+/** @{ */
+
+extern void dwc_otg_hcd_start_xfer_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_complete_xfer_ddma(dwc_otg_hcd_t * hcd,
+                                          dwc_hc_t * hc,
+                                          dwc_otg_hc_regs_t * hc_regs,
+                                          dwc_otg_halt_status_e halt_status);
+
+extern int dwc_otg_hcd_qh_init_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_qh_free_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+
+/** @} */
+
+/** @name Internal Functions */
+/** @{ */
+dwc_otg_qh_t *dwc_urb_to_qh(dwc_otg_hcd_urb_t * urb);
+/** @} */
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+extern int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd,
+                                          uint8_t devaddr);
+extern void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd);
+#endif
+
+/** Gets the QH that contains the list_head */
+#define dwc_list_to_qh(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qh_t, qh_list_entry)
+
+/** Gets the QTD that contains the list_head */
+#define dwc_list_to_qtd(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qtd_t, qtd_list_entry)
+
+/** Check if QH is non-periodic  */
+#define dwc_qh_is_non_per(_qh_ptr_) ((_qh_ptr_->ep_type == UE_BULK) || \
+                                    (_qh_ptr_->ep_type == UE_CONTROL))
+
+/** High bandwidth multiplier as encoded in highspeed endpoint descriptors */
+#define dwc_hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
+
+/** Packet size for any kind of endpoint descriptor */
+#define dwc_max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
+
+/**
+ * Returns true if _frame1 is less than or equal to _frame2. The comparison is
+ * done modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the
+ * frame number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_le(uint16_t frame1, uint16_t frame2)
+{
+       return ((frame2 - frame1) & DWC_HFNUM_MAX_FRNUM) <=
+           (DWC_HFNUM_MAX_FRNUM >> 1);
+}
+
+/**
+ * Returns true if _frame1 is greater than _frame2. The comparison is done
+ * modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the frame
+ * number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_gt(uint16_t frame1, uint16_t frame2)
+{
+       return (frame1 != frame2) &&
+           (((frame1 - frame2) & DWC_HFNUM_MAX_FRNUM) <
+            (DWC_HFNUM_MAX_FRNUM >> 1));
+}
+
+/**
+ * Increments _frame by the amount specified by _inc. The addition is done
+ * modulo DWC_HFNUM_MAX_FRNUM. Returns the incremented value.
+ */
+static inline uint16_t dwc_frame_num_inc(uint16_t frame, uint16_t inc)
+{
+       return (frame + inc) & DWC_HFNUM_MAX_FRNUM;
+}
+
+static inline uint16_t dwc_full_frame_num(uint16_t frame)
+{
+       return (frame & DWC_HFNUM_MAX_FRNUM) >> 3;
+}
+
+static inline uint16_t dwc_micro_frame_num(uint16_t frame)
+{
+       return frame & 0x7;
+}
+
+void dwc_otg_hcd_save_data_toggle(dwc_hc_t * hc,
+                                 dwc_otg_hc_regs_t * hc_regs,
+                                 dwc_otg_qtd_t * qtd);
+
+#ifdef DEBUG
+/**
+ * Macro to sample the remaining PHY clocks left in the current frame. This
+ * may be used during debugging to determine the average time it takes to
+ * execute sections of code. There are two possible sample points, "a" and
+ * "b", so the _letter argument must be one of these values.
+ *
+ * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For
+ * example, "cat /sys/devices/lm0/hcd_frrem".
+ */
+#define dwc_sample_frrem(_hcd, _qh, _letter) \
+{ \
+       hfnum_data_t hfnum; \
+       dwc_otg_qtd_t *qtd; \
+       qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); \
+       if (usb_pipeint(qtd->urb->pipe) && _qh->start_split_frame != 0 && !qtd->complete_split) { \
+               hfnum.d32 = DWC_READ_REG32(&_hcd->core_if->host_if->host_global_regs->hfnum); \
+               switch (hfnum.b.frnum & 0x7) { \
+               case 7: \
+                       _hcd->hfnum_7_samples_##_letter++; \
+                       _hcd->hfnum_7_frrem_accum_##_letter += hfnum.b.frrem; \
+                       break; \
+               case 0: \
+                       _hcd->hfnum_0_samples_##_letter++; \
+                       _hcd->hfnum_0_frrem_accum_##_letter += hfnum.b.frrem; \
+                       break; \
+               default: \
+                       _hcd->hfnum_other_samples_##_letter++; \
+                       _hcd->hfnum_other_frrem_accum_##_letter += hfnum.b.frrem; \
+                       break; \
+               } \
+       } \
+}
+#else
+#define dwc_sample_frrem(_hcd, _qh, _letter)
+#endif
+#endif
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
new file mode 100644
index 0000000..d0d5fa1
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
@@ -0,0 +1,1133 @@
+/*==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_ddma.c $
+ * $Revision: #10 $
+ * $Date: 2011/10/20 $
+ * $Change: 1869464 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/** @file
+ * This file contains Descriptor DMA support implementation for host mode.
+ */
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+extern bool microframe_schedule;
+
+static inline uint8_t frame_list_idx(uint16_t frame)
+{
+       return (frame & (MAX_FRLIST_EN_NUM - 1));
+}
+
+static inline uint16_t desclist_idx_inc(uint16_t idx, uint16_t inc, uint8_t speed)
+{
+       return (idx + inc) &
+           (((speed ==
+              DWC_OTG_EP_SPEED_HIGH) ? MAX_DMA_DESC_NUM_HS_ISOC :
+             MAX_DMA_DESC_NUM_GENERIC) - 1);
+}
+
+static inline uint16_t desclist_idx_dec(uint16_t idx, uint16_t inc, uint8_t speed)
+{
+       return (idx - inc) &
+           (((speed ==
+              DWC_OTG_EP_SPEED_HIGH) ? MAX_DMA_DESC_NUM_HS_ISOC :
+             MAX_DMA_DESC_NUM_GENERIC) - 1);
+}
+
+static inline uint16_t max_desc_num(dwc_otg_qh_t * qh)
+{
+       return (((qh->ep_type == UE_ISOCHRONOUS)
+                && (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH))
+               ? MAX_DMA_DESC_NUM_HS_ISOC : MAX_DMA_DESC_NUM_GENERIC);
+}
+static inline uint16_t frame_incr_val(dwc_otg_qh_t * qh)
+{
+       return ((qh->dev_speed == DWC_OTG_EP_SPEED_HIGH)
+               ? ((qh->interval + 8 - 1) / 8)
+               : qh->interval);
+}
+
+static int desc_list_alloc(dwc_otg_qh_t * qh)
+{
+       int retval = 0;
+
+       qh->desc_list = (dwc_otg_host_dma_desc_t *)
+           DWC_DMA_ALLOC(sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh),
+                         &qh->desc_list_dma);
+
+       if (!qh->desc_list) {
+               retval = -DWC_E_NO_MEMORY;
+               DWC_ERROR("%s: DMA descriptor list allocation failed\n", __func__);
+               
+       }
+
+       dwc_memset(qh->desc_list, 0x00,
+                  sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
+
+       qh->n_bytes =
+           (uint32_t *) DWC_ALLOC(sizeof(uint32_t) * max_desc_num(qh));
+
+       if (!qh->n_bytes) {
+               retval = -DWC_E_NO_MEMORY;
+               DWC_ERROR
+                   ("%s: Failed to allocate array for descriptors' size actual values\n",
+                    __func__);
+
+       }
+       return retval;
+
+}
+
+static void desc_list_free(dwc_otg_qh_t * qh)
+{
+       if (qh->desc_list) {
+               DWC_DMA_FREE(max_desc_num(qh), qh->desc_list,
+                            qh->desc_list_dma);
+               qh->desc_list = NULL;
+       }
+
+       if (qh->n_bytes) {
+               DWC_FREE(qh->n_bytes);
+               qh->n_bytes = NULL;
+       }
+}
+
+static int frame_list_alloc(dwc_otg_hcd_t * hcd)
+{
+       int retval = 0;
+       if (hcd->frame_list)
+               return 0;
+
+       hcd->frame_list = DWC_DMA_ALLOC(4 * MAX_FRLIST_EN_NUM,
+                                       &hcd->frame_list_dma);
+       if (!hcd->frame_list) {
+               retval = -DWC_E_NO_MEMORY;
+               DWC_ERROR("%s: Frame List allocation failed\n", __func__);
+       }
+
+       dwc_memset(hcd->frame_list, 0x00, 4 * MAX_FRLIST_EN_NUM);
+
+       return retval;
+}
+
+static void frame_list_free(dwc_otg_hcd_t * hcd)
+{
+       if (!hcd->frame_list)
+               return;
+       
+       DWC_DMA_FREE(4 * MAX_FRLIST_EN_NUM, hcd->frame_list, hcd->frame_list_dma);
+       hcd->frame_list = NULL;
+}
+
+static void per_sched_enable(dwc_otg_hcd_t * hcd, uint16_t fr_list_en)
+{
+
+       hcfg_data_t hcfg;
+
+       hcfg.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hcfg);
+
+       if (hcfg.b.perschedena) {
+               /* already enabled */
+               return;
+       }
+
+       DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hflbaddr,
+                       hcd->frame_list_dma);
+
+       switch (fr_list_en) {
+       case 64:
+               hcfg.b.frlisten = 3;
+               break;
+       case 32:
+               hcfg.b.frlisten = 2;
+               break;
+       case 16:
+               hcfg.b.frlisten = 1;
+               break;
+       case 8:
+               hcfg.b.frlisten = 0;
+               break;
+       default:
+               break;
+       }
+
+       hcfg.b.perschedena = 1;
+
+       DWC_DEBUGPL(DBG_HCD, "Enabling Periodic schedule\n");
+       DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+
+}
+
+static void per_sched_disable(dwc_otg_hcd_t * hcd)
+{
+       hcfg_data_t hcfg;
+
+       hcfg.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hcfg);
+       
+       if (!hcfg.b.perschedena) {
+               /* already disabled */
+               return;
+       }
+       hcfg.b.perschedena = 0;
+
+       DWC_DEBUGPL(DBG_HCD, "Disabling Periodic schedule\n");
+       DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+/* 
+ * Activates/Deactivates FrameList entries for the channel 
+ * based on endpoint servicing period.
+ */
+void update_frame_list(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, uint8_t enable)
+{
+       uint16_t i, j, inc;
+       dwc_hc_t *hc = NULL;
+
+       if (!qh->channel) {
+               DWC_ERROR("qh->channel = %p", qh->channel);
+               return;
+       }
+
+       if (!hcd) {
+               DWC_ERROR("------hcd = %p", hcd);
+               return;
+       }
+
+       if (!hcd->frame_list) {
+               DWC_ERROR("-------hcd->frame_list = %p", hcd->frame_list);
+               return;
+       }
+
+       hc = qh->channel;
+       inc = frame_incr_val(qh);
+       if (qh->ep_type == UE_ISOCHRONOUS)
+               i = frame_list_idx(qh->sched_frame);
+       else
+               i = 0;
+
+       j = i;
+       do {
+               if (enable)
+                       hcd->frame_list[j] |= (1 << hc->hc_num);
+               else
+                       hcd->frame_list[j] &= ~(1 << hc->hc_num);
+               j = (j + inc) & (MAX_FRLIST_EN_NUM - 1);
+       }
+       while (j != i);
+       if (!enable)
+               return;
+       hc->schinfo = 0;
+       if (qh->channel->speed == DWC_OTG_EP_SPEED_HIGH) {
+               j = 1;
+               /* TODO - check this */
+               inc = (8 + qh->interval - 1) / qh->interval;
+               for (i = 0; i < inc; i++) {
+                       hc->schinfo |= j;
+                       j = j << qh->interval;
+               }
+       } else {
+               hc->schinfo = 0xff;
+       }
+}
+
+#if 1
+void dump_frame_list(dwc_otg_hcd_t * hcd)
+{
+       int i = 0;
+       DWC_PRINTF("--FRAME LIST (hex) --\n");
+       for (i = 0; i < MAX_FRLIST_EN_NUM; i++) {
+               DWC_PRINTF("%x\t", hcd->frame_list[i]);
+               if (!(i % 8) && i)
+                       DWC_PRINTF("\n");
+       }
+       DWC_PRINTF("\n----\n");
+
+}
+#endif
+
+static void release_channel_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       dwc_irqflags_t flags;
+       dwc_spinlock_t *channel_lock = DWC_SPINLOCK_ALLOC();
+
+       dwc_hc_t *hc = qh->channel;
+       if (dwc_qh_is_non_per(qh)) {
+               DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+               if (!microframe_schedule)
+                       hcd->non_periodic_channels--;
+               else
+                       hcd->available_host_channels++;
+               DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+       } else
+               update_frame_list(hcd, qh, 0);
+
+       /* 
+        * The condition is added to prevent double cleanup try in case of device
+        * disconnect. See channel cleanup in dwc_otg_hcd_disconnect_cb().
+        */
+       if (hc->qh) {
+               dwc_otg_hc_cleanup(hcd->core_if, hc);
+               DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
+               hc->qh = NULL;
+       }
+
+       qh->channel = NULL;
+       qh->ntd = 0;
+
+       if (qh->desc_list) {
+               dwc_memset(qh->desc_list, 0x00,
+                          sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
+       }
+       DWC_SPINLOCK_FREE(channel_lock);
+}
+
+/** 
+ * Initializes a QH structure's Descriptor DMA related members.
+ * Allocates memory for descriptor list.
+ * On first periodic QH, allocates memory for FrameList 
+ * and enables periodic scheduling.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh The QH to init.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_init_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       int retval = 0;
+
+       if (qh->do_split) {
+               DWC_ERROR("SPLIT Transfers are not supported in Descriptor DMA.\n");
+               return -1;
+       }
+
+       retval = desc_list_alloc(qh);
+
+       if ((retval == 0)
+           && (qh->ep_type == UE_ISOCHRONOUS || qh->ep_type == UE_INTERRUPT)) {
+               if (!hcd->frame_list) {
+                       retval = frame_list_alloc(hcd);
+                       /* Enable periodic schedule on first periodic QH */
+                       if (retval == 0)
+                               per_sched_enable(hcd, MAX_FRLIST_EN_NUM);
+               }
+       }
+
+       qh->ntd = 0;
+
+       return retval;
+}
+
+/** 
+ * Frees descriptor list memory associated with the QH. 
+ * If QH is periodic and the last, frees FrameList memory 
+ * and disables periodic scheduling. 
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh The QH to init.
+ */
+void dwc_otg_hcd_qh_free_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       desc_list_free(qh);
+
+       /* 
+        * Channel still assigned due to some reasons. 
+        * Seen on Isoc URB dequeue. Channel halted but no subsequent
+        * ChHalted interrupt to release the channel. Afterwards
+        * when it comes here from endpoint disable routine
+        * channel remains assigned.
+        */
+       if (qh->channel)
+               release_channel_ddma(hcd, qh);
+
+       if ((qh->ep_type == UE_ISOCHRONOUS || qh->ep_type == UE_INTERRUPT)
+           && (microframe_schedule || !hcd->periodic_channels) && hcd->frame_list) {
+
+               per_sched_disable(hcd);
+               frame_list_free(hcd);
+       }
+}
+
+static uint8_t frame_to_desc_idx(dwc_otg_qh_t * qh, uint16_t frame_idx)
+{
+       if (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) {
+               /* 
+                * Descriptor set(8 descriptors) index
+                * which is 8-aligned.
+                */
+               return (frame_idx & ((MAX_DMA_DESC_NUM_HS_ISOC / 8) - 1)) * 8;
+       } else {
+               return (frame_idx & (MAX_DMA_DESC_NUM_GENERIC - 1));
+       }
+}
+
+/* 
+ * Determine starting frame for Isochronous transfer. 
+ * Few frames skipped to prevent race condition with HC. 
+ */
+static uint8_t calc_starting_frame(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+                                  uint8_t * skip_frames)
+{
+       uint16_t frame = 0;
+       hcd->frame_number = dwc_otg_hcd_get_frame_number(hcd);
+       
+       /* sched_frame is always frame number(not uFrame) both in FS and HS !! */
+       
+       /* 
+        * skip_frames is used to limit activated descriptors number
+        * to avoid the situation when HC services the last activated
+        * descriptor firstly.
+        * Example for FS:
+        * Current frame is 1, scheduled frame is 3. Since HC always fetches the descriptor
+        * corresponding to curr_frame+1, the descriptor corresponding to frame 2
+        * will be fetched. If the number of descriptors is max=64 (or greather) the
+        * list will be fully programmed with Active descriptors and it is possible
+        * case(rare) that the latest descriptor(considering rollback) corresponding
+        * to frame 2 will be serviced first. HS case is more probable because, in fact,
+        * up to 11 uframes(16 in the code) may be skipped.
+        */
+       if (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) {
+               /* 
+                * Consider uframe counter also, to start xfer asap.
+                * If half of the frame elapsed skip 2 frames otherwise
+                * just 1 frame. 
+                * Starting descriptor index must be 8-aligned, so
+                * if the current frame is near to complete the next one
+                * is skipped as well.
+                */
+
+               if (dwc_micro_frame_num(hcd->frame_number) >= 5) {
+                       *skip_frames = 2 * 8;
+                       frame = dwc_frame_num_inc(hcd->frame_number, *skip_frames);
+               } else {
+                       *skip_frames = 1 * 8;
+                       frame = dwc_frame_num_inc(hcd->frame_number, *skip_frames);
+               }
+
+               frame = dwc_full_frame_num(frame);
+       } else {
+               /* 
+                * Two frames are skipped for FS - the current and the next.
+                * But for descriptor programming, 1 frame(descriptor) is enough,
+                * see example above.
+                */
+               *skip_frames = 1;
+               frame = dwc_frame_num_inc(hcd->frame_number, 2);
+       }
+
+       return frame;
+}
+
+/* 
+ * Calculate initial descriptor index for isochronous transfer
+ * based on scheduled frame. 
+ */
+static uint8_t recalc_initial_desc_idx(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       uint16_t frame = 0, fr_idx, fr_idx_tmp;
+       uint8_t skip_frames = 0;
+       /* 
+        * With current ISOC processing algorithm the channel is being
+        * released when no more QTDs in the list(qh->ntd == 0).
+        * Thus this function is called only when qh->ntd == 0 and qh->channel == 0. 
+        *
+        * So qh->channel != NULL branch is not used and just not removed from the
+        * source file. It is required for another possible approach which is,
+        * do not disable and release the channel when ISOC session completed, 
+        * just move QH to inactive schedule until new QTD arrives. 
+        * On new QTD, the QH moved back to 'ready' schedule,
+        * starting frame and therefore starting desc_index are recalculated.
+        * In this case channel is released only on ep_disable.
+        */
+
+       /* Calculate starting descriptor index. For INTERRUPT endpoint it is always 0. */
+       if (qh->channel) {
+               frame = calc_starting_frame(hcd, qh, &skip_frames);
+               /* 
+                * Calculate initial descriptor index based on FrameList current bitmap
+                * and servicing period.
+                */
+               fr_idx_tmp = frame_list_idx(frame);
+               fr_idx =
+                   (MAX_FRLIST_EN_NUM + frame_list_idx(qh->sched_frame) -
+                    fr_idx_tmp)
+                   % frame_incr_val(qh);
+               fr_idx = (fr_idx + fr_idx_tmp) % MAX_FRLIST_EN_NUM;
+       } else {
+               qh->sched_frame = calc_starting_frame(hcd, qh, &skip_frames);
+               fr_idx = frame_list_idx(qh->sched_frame);
+       }
+
+       qh->td_first = qh->td_last = frame_to_desc_idx(qh, fr_idx);
+
+       return skip_frames;
+}
+
+#define        ISOC_URB_GIVEBACK_ASAP
+
+#define MAX_ISOC_XFER_SIZE_FS 1023
+#define MAX_ISOC_XFER_SIZE_HS 3072
+#define DESCNUM_THRESHOLD 4
+
+static void init_isoc_dma_desc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+                              uint8_t skip_frames)
+{
+       struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+       dwc_otg_qtd_t *qtd;
+       dwc_otg_host_dma_desc_t *dma_desc;
+       uint16_t idx, inc, n_desc, ntd_max, max_xfer_size;
+
+       idx = qh->td_last;
+       inc = qh->interval;
+       n_desc = 0;
+
+       ntd_max = (max_desc_num(qh) + qh->interval - 1) / qh->interval;
+       if (skip_frames && !qh->channel)
+               ntd_max = ntd_max - skip_frames / qh->interval;
+
+       max_xfer_size =
+           (qh->dev_speed ==
+            DWC_OTG_EP_SPEED_HIGH) ? MAX_ISOC_XFER_SIZE_HS :
+           MAX_ISOC_XFER_SIZE_FS;
+
+       DWC_CIRCLEQ_FOREACH(qtd, &qh->qtd_list, qtd_list_entry) {
+               while ((qh->ntd < ntd_max)
+                      && (qtd->isoc_frame_index_last <
+                          qtd->urb->packet_count)) {
+
+                       dma_desc = &qh->desc_list[idx];
+                       dwc_memset(dma_desc, 0x00, sizeof(dwc_otg_host_dma_desc_t));
+
+                       frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index_last];
+
+                       if (frame_desc->length > max_xfer_size)
+                               qh->n_bytes[idx] = max_xfer_size;
+                       else
+                               qh->n_bytes[idx] = frame_desc->length;
+                       dma_desc->status.b_isoc.n_bytes = qh->n_bytes[idx];
+                       dma_desc->status.b_isoc.a = 1;
+                       dma_desc->status.b_isoc.sts = 0;
+
+                       dma_desc->buf = qtd->urb->dma + frame_desc->offset;
+
+                       qh->ntd++;
+
+                       qtd->isoc_frame_index_last++;
+
+#ifdef ISOC_URB_GIVEBACK_ASAP
+                       /* 
+                        * Set IOC for each descriptor corresponding to the 
+                        * last frame of the URB.
+                        */
+                       if (qtd->isoc_frame_index_last ==
+                           qtd->urb->packet_count)
+                               dma_desc->status.b_isoc.ioc = 1;
+
+#endif
+                       idx = desclist_idx_inc(idx, inc, qh->dev_speed);
+                       n_desc++;
+
+               }
+               qtd->in_process = 1;
+       }
+
+       qh->td_last = idx;
+
+#ifdef ISOC_URB_GIVEBACK_ASAP
+       /* Set IOC for the last descriptor if descriptor list is full */
+       if (qh->ntd == ntd_max) {
+               idx = desclist_idx_dec(qh->td_last, inc, qh->dev_speed);
+               qh->desc_list[idx].status.b_isoc.ioc = 1;
+       }
+#else
+       /* 
+        * Set IOC bit only for one descriptor. 
+        * Always try to be ahead of HW processing,
+        * i.e. on IOC generation driver activates next descriptors but
+        * core continues to process descriptors followed the one with IOC set.
+        */
+
+       if (n_desc > DESCNUM_THRESHOLD) {
+               /* 
+                * Move IOC "up". Required even if there is only one QTD 
+                * in the list, cause QTDs migth continue to be queued,
+                * but during the activation it was only one queued.
+                * Actually more than one QTD might be in the list if this function called 
+                * from XferCompletion - QTDs was queued during HW processing of the previous
+                * descriptor chunk.
+                */
+               idx = dwc_desclist_idx_dec(idx, inc * ((qh->ntd + 1) / 2), qh->dev_speed);
+       } else {
+               /* 
+                * Set the IOC for the latest descriptor
+                * if either number of descriptor is not greather than threshold
+                * or no more new descriptors activated.
+                */
+               idx = dwc_desclist_idx_dec(qh->td_last, inc, qh->dev_speed);
+       }
+
+       qh->desc_list[idx].status.b_isoc.ioc = 1;
+#endif
+}
+
+static void init_non_isoc_dma_desc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+
+       dwc_hc_t *hc;
+       dwc_otg_host_dma_desc_t *dma_desc;
+       dwc_otg_qtd_t *qtd;
+       int num_packets, len, n_desc = 0;
+
+       hc = qh->channel;
+
+       /* 
+        * Start with hc->xfer_buff initialized in 
+        * assign_and_init_hc(), then if SG transfer consists of multiple URBs,
+        * this pointer re-assigned to the buffer of the currently processed QTD.
+        * For non-SG request there is always one QTD active.
+        */
+
+       DWC_CIRCLEQ_FOREACH(qtd, &qh->qtd_list, qtd_list_entry) {
+
+               if (n_desc) {
+                       /* SG request - more than 1 QTDs */
+                       hc->xfer_buff = (uint8_t *)qtd->urb->dma + qtd->urb->actual_length;
+                       hc->xfer_len = qtd->urb->length - qtd->urb->actual_length;
+               }
+
+               qtd->n_desc = 0;
+
+               do {
+                       dma_desc = &qh->desc_list[n_desc];
+                       len = hc->xfer_len;
+
+                       if (len > MAX_DMA_DESC_SIZE)
+                               len = MAX_DMA_DESC_SIZE - hc->max_packet + 1;
+
+                       if (hc->ep_is_in) {
+                               if (len > 0) {
+                                       num_packets = (len + hc->max_packet - 1) / hc->max_packet;
+                               } else {
+                                       /* Need 1 packet for transfer length of 0. */
+                                       num_packets = 1;
+                               }
+                               /* Always program an integral # of max packets for IN transfers. */
+                               len = num_packets * hc->max_packet;
+                       }
+
+                       dma_desc->status.b.n_bytes = len;
+
+                       qh->n_bytes[n_desc] = len;
+
+                       if ((qh->ep_type == UE_CONTROL)
+                           && (qtd->control_phase == DWC_OTG_CONTROL_SETUP))
+                               dma_desc->status.b.sup = 1;     /* Setup Packet */
+
+                       dma_desc->status.b.a = 1;       /* Active descriptor */
+                       dma_desc->status.b.sts = 0;
+
+                       dma_desc->buf =
+                           ((unsigned long)hc->xfer_buff & 0xffffffff);
+
+                       /* 
+                        * Last descriptor(or single) of IN transfer 
+                        * with actual size less than MaxPacket.
+                        */
+                       if (len > hc->xfer_len) {
+                               hc->xfer_len = 0;
+                       } else {
+                               hc->xfer_buff += len;
+                               hc->xfer_len -= len;
+                       }
+
+                       qtd->n_desc++;
+                       n_desc++;
+               }
+               while ((hc->xfer_len > 0) && (n_desc != MAX_DMA_DESC_NUM_GENERIC));
+               
+
+               qtd->in_process = 1;
+
+               if (qh->ep_type == UE_CONTROL)
+                       break;
+
+               if (n_desc == MAX_DMA_DESC_NUM_GENERIC)
+                       break;
+       }
+
+       if (n_desc) {
+               /* Request Transfer Complete interrupt for the last descriptor */
+               qh->desc_list[n_desc - 1].status.b.ioc = 1;
+               /* End of List indicator */
+               qh->desc_list[n_desc - 1].status.b.eol = 1;
+
+               hc->ntd = n_desc;
+       }
+}
+
+/** 
+ * For Control and Bulk endpoints initializes descriptor list
+ * and starts the transfer.
+ *
+ * For Interrupt and Isochronous endpoints initializes descriptor list
+ * then updates FrameList, marking appropriate entries as active.
+ * In case of Isochronous, the starting descriptor index is calculated based
+ * on the scheduled frame, but only on the first transfer descriptor within a session.
+ * Then starts the transfer via enabling the channel. 
+ * For Isochronous endpoint the channel is not halted on XferComplete 
+ * interrupt so remains assigned to the endpoint(QH) until session is done.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh The QH to init.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+void dwc_otg_hcd_start_xfer_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       /* Channel is already assigned */
+       dwc_hc_t *hc = qh->channel;
+       uint8_t skip_frames = 0;
+
+       switch (hc->ep_type) {
+       case DWC_OTG_EP_TYPE_CONTROL:
+       case DWC_OTG_EP_TYPE_BULK:
+               init_non_isoc_dma_desc(hcd, qh);
+
+               dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
+               break;
+       case DWC_OTG_EP_TYPE_INTR:
+               init_non_isoc_dma_desc(hcd, qh);
+
+               update_frame_list(hcd, qh, 1);
+
+               dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
+               break;
+       case DWC_OTG_EP_TYPE_ISOC:
+
+               if (!qh->ntd)
+                       skip_frames = recalc_initial_desc_idx(hcd, qh);
+
+               init_isoc_dma_desc(hcd, qh, skip_frames);
+
+               if (!hc->xfer_started) {
+
+                       update_frame_list(hcd, qh, 1);
+
+                       /* 
+                        * Always set to max, instead of actual size.
+                        * Otherwise ntd will be changed with 
+                        * channel being enabled. Not recommended.
+                        *
+                        */
+                       hc->ntd = max_desc_num(qh);
+                       /* Enable channel only once for ISOC */
+                       dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
+               }
+
+               break;
+       default:
+
+               break;
+       }
+}
+
+static void complete_isoc_xfer_ddma(dwc_otg_hcd_t * hcd,
+                                   dwc_hc_t * hc,
+                                   dwc_otg_hc_regs_t * hc_regs,
+                                   dwc_otg_halt_status_e halt_status)
+{
+       struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+       dwc_otg_qtd_t *qtd, *qtd_tmp;
+       dwc_otg_qh_t *qh;
+       dwc_otg_host_dma_desc_t *dma_desc;
+       uint16_t idx, remain;
+       uint8_t urb_compl;
+
+       qh = hc->qh;
+       idx = qh->td_first;
+
+       if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
+               DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry)
+                   qtd->in_process = 0;
+               return;
+       } else if ((halt_status == DWC_OTG_HC_XFER_AHB_ERR) ||
+                  (halt_status == DWC_OTG_HC_XFER_BABBLE_ERR)) {
+               /* 
+                * Channel is halted in these error cases.
+                * Considered as serious issues.
+                * Complete all URBs marking all frames as failed, 
+                * irrespective whether some of the descriptors(frames) succeeded or no.
+                * Pass error code to completion routine as well, to
+                * update urb->status, some of class drivers might use it to stop
+                * queing transfer requests.
+                */
+               int err = (halt_status == DWC_OTG_HC_XFER_AHB_ERR)
+                   ? (-DWC_E_IO)
+                   : (-DWC_E_OVERFLOW);
+                                               
+               DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
+                       for (idx = 0; idx < qtd->urb->packet_count; idx++) {
+                               frame_desc = &qtd->urb->iso_descs[idx];
+                               frame_desc->status = err;
+                       }
+                       hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, err);
+                       dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+               }
+               return;
+       }
+
+       DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
+
+               if (!qtd->in_process)
+                       break;
+
+               urb_compl = 0;
+
+               do {
+
+                       dma_desc = &qh->desc_list[idx];
+                       
+                       frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+                       remain = hc->ep_is_in ? dma_desc->status.b_isoc.n_bytes : 0;
+
+                       if (dma_desc->status.b_isoc.sts == DMA_DESC_STS_PKTERR) {
+                               /* 
+                                * XactError or, unable to complete all the transactions 
+                                * in the scheduled micro-frame/frame, 
+                                * both indicated by DMA_DESC_STS_PKTERR.
+                                */
+                               qtd->urb->error_count++;
+                               frame_desc->actual_length = qh->n_bytes[idx] - remain;
+                               frame_desc->status = -DWC_E_PROTOCOL;
+                       } else {
+                               /* Success */
+                                                               
+                               frame_desc->actual_length = qh->n_bytes[idx] - remain;
+                               frame_desc->status = 0;
+                       }
+
+                       if (++qtd->isoc_frame_index == qtd->urb->packet_count) {
+                               /*
+                                * urb->status is not used for isoc transfers here.
+                                * The individual frame_desc status are used instead.
+                                */
+
+                               hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+                               dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+
+                               /* 
+                                * This check is necessary because urb_dequeue can be called 
+                                * from urb complete callback(sound driver example).
+                                * All pending URBs are dequeued there, so no need for
+                                * further processing.
+                                */
+                               if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {   
+                                       return;
+                               }
+
+                               urb_compl = 1;
+
+                       }
+
+                       qh->ntd--;
+
+                       /* Stop if IOC requested descriptor reached */
+                       if (dma_desc->status.b_isoc.ioc) {
+                               idx = desclist_idx_inc(idx, qh->interval, hc->speed);   
+                               goto stop_scan;
+                       }
+
+                       idx = desclist_idx_inc(idx, qh->interval, hc->speed);
+
+                       if (urb_compl)
+                               break;
+               }
+               while (idx != qh->td_first);
+       }
+stop_scan:
+       qh->td_first = idx;
+}
+
+uint8_t update_non_isoc_urb_state_ddma(dwc_otg_hcd_t * hcd,
+                                      dwc_hc_t * hc,
+                                      dwc_otg_qtd_t * qtd,
+                                      dwc_otg_host_dma_desc_t * dma_desc,
+                                      dwc_otg_halt_status_e halt_status,
+                                      uint32_t n_bytes, uint8_t * xfer_done)
+{
+
+       uint16_t remain = hc->ep_is_in ? dma_desc->status.b.n_bytes : 0;
+       dwc_otg_hcd_urb_t *urb = qtd->urb;
+
+       if (halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+               urb->status = -DWC_E_IO;
+               return 1;
+       }
+       if (dma_desc->status.b.sts == DMA_DESC_STS_PKTERR) {
+               switch (halt_status) {
+               case DWC_OTG_HC_XFER_STALL:
+                       urb->status = -DWC_E_PIPE;
+                       break;
+               case DWC_OTG_HC_XFER_BABBLE_ERR:
+                       urb->status = -DWC_E_OVERFLOW;
+                       break;
+               case DWC_OTG_HC_XFER_XACT_ERR:
+                       urb->status = -DWC_E_PROTOCOL;
+                       break;
+               default:        
+                       DWC_ERROR("%s: Unhandled descriptor error status (%d)\n", __func__,
+                                 halt_status);
+                       break;
+               }
+               return 1;
+       }
+
+       if (dma_desc->status.b.a == 1) {
+               DWC_DEBUGPL(DBG_HCDV,
+                           "Active descriptor encountered on channel %d\n",
+                           hc->hc_num);
+               return 0;
+       }
+
+       if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL) {
+               if (qtd->control_phase == DWC_OTG_CONTROL_DATA) {
+                       urb->actual_length += n_bytes - remain;
+                       if (remain || urb->actual_length == urb->length) {
+                               /* 
+                                * For Control Data stage do not set urb->status=0 to prevent
+                                * URB callback. Set it when Status phase done. See below.
+                                */
+                               *xfer_done = 1;
+                       }
+
+               } else if (qtd->control_phase == DWC_OTG_CONTROL_STATUS) {
+                       urb->status = 0;
+                       *xfer_done = 1;
+               }
+               /* No handling for SETUP stage */
+       } else {
+               /* BULK and INTR */
+               urb->actual_length += n_bytes - remain;
+               if (remain || urb->actual_length == urb->length) {
+                       urb->status = 0;
+                       *xfer_done = 1;
+               }
+       }
+
+       return 0;
+}
+
+static void complete_non_isoc_xfer_ddma(dwc_otg_hcd_t * hcd,
+                                       dwc_hc_t * hc,
+                                       dwc_otg_hc_regs_t * hc_regs,
+                                       dwc_otg_halt_status_e halt_status)
+{
+       dwc_otg_hcd_urb_t *urb = NULL;
+       dwc_otg_qtd_t *qtd, *qtd_tmp;
+       dwc_otg_qh_t *qh;
+       dwc_otg_host_dma_desc_t *dma_desc;
+       uint32_t n_bytes, n_desc, i;
+       uint8_t failed = 0, xfer_done;
+
+       n_desc = 0;
+
+       qh = hc->qh;
+
+       if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
+               DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
+                       qtd->in_process = 0;
+               }
+               return;
+       }
+
+       DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {
+
+               urb = qtd->urb;
+
+               n_bytes = 0;
+               xfer_done = 0;
+
+               for (i = 0; i < qtd->n_desc; i++) {
+                       dma_desc = &qh->desc_list[n_desc];
+
+                       n_bytes = qh->n_bytes[n_desc];
+
+                       failed =
+                           update_non_isoc_urb_state_ddma(hcd, hc, qtd,
+                                                          dma_desc,
+                                                          halt_status, n_bytes,
+                                                          &xfer_done);
+
+                       if (failed
+                           || (xfer_done
+                               && (urb->status != -DWC_E_IN_PROGRESS))) {
+
+                               hcd->fops->complete(hcd, urb->priv, urb,
+                                                   urb->status);
+                               dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+
+                               if (failed)
+                                       goto stop_scan;
+                       } else if (qh->ep_type == UE_CONTROL) {
+                               if (qtd->control_phase == DWC_OTG_CONTROL_SETUP) {
+                                       if (urb->length > 0) {
+                                               qtd->control_phase = DWC_OTG_CONTROL_DATA;
+                                       } else {
+                                               qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+                                       }
+                                       DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction done\n");
+                               } else if (qtd->control_phase == DWC_OTG_CONTROL_DATA) {
+                                       if (xfer_done) {
+                                               qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+                                               DWC_DEBUGPL(DBG_HCDV, "  Control data transfer done\n");
+                                       } else if (i + 1 == qtd->n_desc) {
+                                               /* 
+                                                * Last descriptor for Control data stage which is
+                                                * not completed yet.
+                                                */
+                                               dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+                                       }
+                               }
+                       }
+
+                       n_desc++;
+               }
+
+       }
+
+stop_scan:
+
+       if (qh->ep_type != UE_CONTROL) {
+               /* 
+                * Resetting the data toggle for bulk
+                * and interrupt endpoints in case of stall. See handle_hc_stall_intr() 
+                */
+               if (halt_status == DWC_OTG_HC_XFER_STALL)
+                       qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+               else
+                       dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+       }
+
+       if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+               hcint_data_t hcint;
+               hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+               if (hcint.b.nyet) {
+                       /*
+                        * Got a NYET on the last transaction of the transfer. It
+                        * means that the endpoint should be in the PING state at the
+                        * beginning of the next transfer.
+                        */
+                       qh->ping_state = 1;
+                       clear_hc_int(hc_regs, nyet);
+               }
+
+       }
+
+}
+
+/**
+ * This function is called from interrupt handlers.
+ * Scans the descriptor list, updates URB's status and
+ * calls completion routine for the URB if it's done.
+ * Releases the channel to be used by other transfers.
+ * In case of Isochronous endpoint the channel is not halted until 
+ * the end of the session, i.e. QTD list is empty.
+ * If periodic channel released the FrameList is updated accordingly.
+ *
+ * Calls transaction selection routines to activate pending transfers.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param hc Host channel, the transfer is completed on.
+ * @param hc_regs Host channel registers.
+ * @param halt_status Reason the channel is being halted, 
+ *                   or just XferComplete for isochronous transfer
+ */
+void dwc_otg_hcd_complete_xfer_ddma(dwc_otg_hcd_t * hcd,
+                                   dwc_hc_t * hc,
+                                   dwc_otg_hc_regs_t * hc_regs,
+                                   dwc_otg_halt_status_e halt_status)
+{
+       uint8_t continue_isoc_xfer = 0;
+       dwc_otg_transaction_type_e tr_type;
+       dwc_otg_qh_t *qh = hc->qh;
+
+       if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+
+               complete_isoc_xfer_ddma(hcd, hc, hc_regs, halt_status);
+
+               /* Release the channel if halted or session completed */
+               if (halt_status != DWC_OTG_HC_XFER_COMPLETE ||
+                   DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+
+                       /* Halt the channel if session completed */
+                       if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+                               dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
+                       }
+
+                       release_channel_ddma(hcd, qh);
+                       dwc_otg_hcd_qh_remove(hcd, qh);
+               } else {
+                       /* Keep in assigned schedule to continue transfer */
+                       DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
+                                          &qh->qh_list_entry);
+                       continue_isoc_xfer = 1;
+
+               }
+               /** @todo Consider the case when period exceeds FrameList size.
+                *  Frame Rollover interrupt should be used. 
+                */
+       } else {
+               /* Scan descriptor list to complete the URB(s), then release the channel */
+               complete_non_isoc_xfer_ddma(hcd, hc, hc_regs, halt_status);
+
+               release_channel_ddma(hcd, qh);
+               dwc_otg_hcd_qh_remove(hcd, qh);
+
+               if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+                       /* Add back to inactive non-periodic schedule on normal completion */
+                       dwc_otg_hcd_qh_add(hcd, qh);
+               }
+
+       }
+       tr_type = dwc_otg_hcd_select_transactions(hcd);
+       if (tr_type != DWC_OTG_TRANSACTION_NONE || continue_isoc_xfer) {
+               if (continue_isoc_xfer) {
+                       if (tr_type == DWC_OTG_TRANSACTION_NONE) {
+                               tr_type = DWC_OTG_TRANSACTION_PERIODIC;
+                       } else if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC) {
+                               tr_type = DWC_OTG_TRANSACTION_ALL;
+                       }
+               }
+               dwc_otg_hcd_queue_transactions(hcd, tr_type);
+       }
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h b/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h
new file mode 100644
index 0000000..b3dc806
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h
@@ -0,0 +1,412 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_if.h $
+ * $Revision: #12 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+#ifndef __DWC_HCD_IF_H__
+#define __DWC_HCD_IF_H__
+
+#include "dwc_otg_core_if.h"
+
+/** @file
+ * This file defines DWC_OTG HCD Core API.
+ */
+
+struct dwc_otg_hcd;
+typedef struct dwc_otg_hcd dwc_otg_hcd_t;
+
+struct dwc_otg_hcd_urb;
+typedef struct dwc_otg_hcd_urb dwc_otg_hcd_urb_t;
+
+/** @name HCD Function Driver Callbacks */
+/** @{ */
+
+/** This function is called whenever core switches to host mode. */
+typedef int (*dwc_otg_hcd_start_cb_t) (dwc_otg_hcd_t * hcd);
+
+/** This function is called when device has been disconnected */
+typedef int (*dwc_otg_hcd_disconnect_cb_t) (dwc_otg_hcd_t * hcd);
+
+/** Wrapper provides this function to HCD to core, so it can get hub information to which device is connected */
+typedef int (*dwc_otg_hcd_hub_info_from_urb_cb_t) (dwc_otg_hcd_t * hcd,
+                                                  void *urb_handle,
+                                                  uint32_t * hub_addr,
+                                                  uint32_t * port_addr);
+/** Via this function HCD core gets device speed */
+typedef int (*dwc_otg_hcd_speed_from_urb_cb_t) (dwc_otg_hcd_t * hcd,
+                                               void *urb_handle);
+
+/** This function is called when urb is completed */
+typedef int (*dwc_otg_hcd_complete_urb_cb_t) (dwc_otg_hcd_t * hcd,
+                                             void *urb_handle,
+                                             dwc_otg_hcd_urb_t * dwc_otg_urb,
+                                             int32_t status);
+
+/** Via this function HCD core gets b_hnp_enable parameter */
+typedef int (*dwc_otg_hcd_get_b_hnp_enable) (dwc_otg_hcd_t * hcd);
+
+struct dwc_otg_hcd_function_ops {
+       dwc_otg_hcd_start_cb_t start;
+       dwc_otg_hcd_disconnect_cb_t disconnect;
+       dwc_otg_hcd_hub_info_from_urb_cb_t hub_info;
+       dwc_otg_hcd_speed_from_urb_cb_t speed;
+       dwc_otg_hcd_complete_urb_cb_t complete;
+       dwc_otg_hcd_get_b_hnp_enable get_b_hnp_enable;
+};
+/** @} */
+
+/** @name HCD Core API */
+/** @{ */
+/** This function allocates dwc_otg_hcd structure and returns pointer on it. */
+extern dwc_otg_hcd_t *dwc_otg_hcd_alloc_hcd(void);
+
+/** This function should be called to initiate HCD Core.
+ *
+ * @param hcd The HCD
+ * @param core_if The DWC_OTG Core
+ *
+ * Returns -DWC_E_NO_MEMORY if no enough memory.
+ * Returns 0 on success  
+ */
+extern int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if);
+
+/** Frees HCD
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd);
+
+/** This function should be called on every hardware interrupt.
+ *
+ * @param dwc_otg_hcd The HCD
+ *
+ * Returns non zero if interrupt is handled
+ * Return 0 if interrupt is not handled
+ */
+extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+
+/**
+ * Returns private data set by
+ * dwc_otg_hcd_set_priv_data function.
+ *
+ * @param hcd The HCD
+ */
+extern void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd);
+
+/**
+ * Set private data.
+ *
+ * @param hcd The HCD
+ * @param priv_data pointer to be stored in private data
+ */
+extern void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data);
+
+/**
+ * This function initializes the HCD Core.
+ *
+ * @param hcd The HCD
+ * @param fops The Function Driver Operations data structure containing pointers to all callbacks.
+ *
+ * Returns -DWC_E_NO_DEVICE if Core is currently is in device mode.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
+                            struct dwc_otg_hcd_function_ops *fops);
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped. 
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd);
+
+/**
+ * Handles hub class-specific requests.
+ *
+ * @param dwc_otg_hcd The HCD
+ * @param typeReq Request Type
+ * @param wValue wValue from control request
+ * @param wIndex wIndex from control request
+ * @param buf data buffer 
+ * @param wLength data buffer length
+ *
+ * Returns -DWC_E_INVALID if invalid argument is passed
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
+                                  uint16_t typeReq, uint16_t wValue,
+                                  uint16_t wIndex, uint8_t * buf,
+                                  uint16_t wLength);
+
+/**
+ * Returns otg port number.
+ *
+ * @param hcd The HCD
+ */
+extern uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd);
+
+/**
+ * Returns OTG version - either 1.3 or 2.0.
+ *
+ * @param core_if The core_if structure pointer
+ */
+extern uint16_t dwc_otg_get_otg_version(dwc_otg_core_if_t * core_if);
+
+/**
+ * Returns 1 if currently core is acting as B host, and 0 otherwise.
+ *
+ * @param hcd The HCD
+ */
+extern uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd);
+
+/**
+ * Returns current frame number.
+ *
+ * @param hcd The HCD
+ */
+extern int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * hcd);
+
+/**
+ * Dumps hcd state.
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd);
+
+/**
+ * Dump the average frame remaining at SOF. This can be used to
+ * determine average interrupt latency. Frame remaining is also shown for
+ * start transfer and two additional sample points.
+ * Currently this function is not implemented.
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd);
+
+/**
+ * Sends LPM transaction to the local device.
+ *
+ * @param hcd The HCD
+ * @param devaddr Device Address
+ * @param hird Host initiated resume duration
+ * @param bRemoteWake Value of bRemoteWake field in LPM transaction
+ *
+ * Returns negative value if sending LPM transaction was not succeeded.
+ * Returns 0 on success.
+ */
+extern int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr,
+                               uint8_t hird, uint8_t bRemoteWake);
+
+/* URB interface */
+
+/**
+ * Allocates memory for dwc_otg_hcd_urb structure.
+ * Allocated memory should be freed by call of DWC_FREE.
+ *
+ * @param hcd The HCD
+ * @param iso_desc_count Count of ISOC descriptors
+ * @param atomic_alloc Specefies whether to perform atomic allocation.
+ */
+extern dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
+                                               int iso_desc_count,
+                                               int atomic_alloc);
+
+/**
+ * Set pipe information in URB.
+ *
+ * @param hcd_urb DWC_OTG URB
+ * @param devaddr Device Address
+ * @param ep_num Endpoint Number
+ * @param ep_type Endpoint Type
+ * @param ep_dir Endpoint Direction
+ * @param mps Max Packet Size
+ */
+extern void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * hcd_urb,
+                                        uint8_t devaddr, uint8_t ep_num,
+                                        uint8_t ep_type, uint8_t ep_dir,
+                                        uint16_t mps);
+
+/* Transfer flags */
+#define URB_GIVEBACK_ASAP 0x1
+#define URB_SEND_ZERO_PACKET 0x2
+
+/**
+ * Sets dwc_otg_hcd_urb parameters.
+ *
+ * @param urb DWC_OTG URB allocated by dwc_otg_hcd_urb_alloc function.
+ * @param urb_handle Unique handle for request, this will be passed back
+ * to function driver in completion callback.
+ * @param buf The buffer for the data
+ * @param dma The DMA buffer for the data
+ * @param buflen Transfer length
+ * @param sp Buffer for setup data
+ * @param sp_dma DMA address of setup data buffer
+ * @param flags Transfer flags
+ * @param interval Polling interval for interrupt or isochronous transfers.
+ */
+extern void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * urb,
+                                      void *urb_handle, void *buf,
+                                      dwc_dma_t dma, uint32_t buflen, void *sp,
+                                      dwc_dma_t sp_dma, uint32_t flags,
+                                      uint16_t interval);
+
+/** Gets status from dwc_otg_hcd_urb
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb);
+
+/** Gets actual length from dwc_otg_hcd_urb
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t *
+                                                 dwc_otg_urb);
+
+/** Gets error count from dwc_otg_hcd_urb. Only for ISOC URBs
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t *
+                                               dwc_otg_urb);
+
+/** Set ISOC descriptor offset and length
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param desc_num ISOC descriptor number
+ * @param offset Offset from beginig of buffer.
+ * @param length Transaction length
+ */
+extern void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
+                                               int desc_num, uint32_t offset,
+                                               uint32_t length);
+
+/** Get status of ISOC descriptor, specified by desc_num
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param desc_num ISOC descriptor number 
+ */
+extern uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t *
+                                                   dwc_otg_urb, int desc_num);
+
+/** Get actual length of ISOC descriptor, specified by desc_num
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param desc_num ISOC descriptor number
+ */
+extern uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
+                                                          dwc_otg_urb,
+                                                          int desc_num);
+
+/** Queue URB. After transfer is completes, the complete callback will be called with the URB status
+ *
+ * @param dwc_otg_hcd The HCD
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param ep_handle Out parameter for returning endpoint handle
+ * @param atomic_alloc Flag to do atomic allocation if needed
+ *
+ * Returns -DWC_E_NO_DEVICE if no device is connected.
+ * Returns -DWC_E_NO_MEMORY if there is no enough memory.
+ * Returns 0 on success.
+ */
+extern int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * dwc_otg_hcd,
+                                  dwc_otg_hcd_urb_t * dwc_otg_urb,
+                                  void **ep_handle, int atomic_alloc);
+
+/** De-queue the specified URB
+ *
+ * @param dwc_otg_hcd The HCD
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * dwc_otg_hcd,
+                                  dwc_otg_hcd_urb_t * dwc_otg_urb);
+
+/** Frees resources in the DWC_otg controller related to a given endpoint.
+ * Any URBs for the endpoint must already be dequeued.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle, returned by dwc_otg_hcd_urb_enqueue function
+ * @param retry Number of retries if there are queued transfers.
+ *
+ * Returns -DWC_E_INVALID if invalid arguments are passed.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
+                                       int retry);
+
+/* Resets the data toggle in qh structure. This function can be called from
+ * usb_clear_halt routine.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle, returned by dwc_otg_hcd_urb_enqueue function
+ *
+ * Returns -DWC_E_INVALID if invalid arguments are passed.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle);
+
+/** Returns 1 if status of specified port is changed and 0 otherwise.
+ *
+ * @param hcd The HCD
+ * @param port Port number
+ */
+extern int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port);
+
+/** Call this function to check if bandwidth was allocated for specified endpoint.
+ * Only for ISOC and INTERRUPT endpoints.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle
+ */
+extern int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd,
+                                             void *ep_handle);
+
+/** Call this function to check if bandwidth was freed for specified endpoint.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle
+ */
+extern int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle);
+
+/** Returns bandwidth allocated for specified endpoint in microseconds.
+ * Only for ISOC and INTERRUPT endpoints.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle
+ */
+extern uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd,
+                                           void *ep_handle);
+
+/** @} */
+
+#endif /* __DWC_HCD_IF_H__ */
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
new file mode 100644
index 0000000..63c1b55
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
@@ -0,0 +1,2106 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_intr.c $
+ * $Revision: #89 $
+ * $Date: 2011/10/20 $
+ * $Change: 1869487 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+extern bool microframe_schedule;
+
+/** @file
+ * This file contains the implementation of the HCD Interrupt handlers.
+ */
+
+/** This function handles interrupts for the HCD. */
+int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       int retval = 0;
+
+       dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+       gintsts_data_t gintsts;
+#ifdef DEBUG
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+
+        //GRAYG: debugging
+        if (NULL == global_regs) {
+                DWC_DEBUGPL(DBG_HCD, "**** NULL regs: dwc_otg_hcd=%p "
+                            "core_if=%p\n",
+                            dwc_otg_hcd, global_regs);
+                return retval;
+        }
+#endif
+
+       /* Exit from ISR if core is hibernated */
+       if (core_if->hibernation_suspend == 1) {
+               return retval;
+       }
+       DWC_SPINLOCK(dwc_otg_hcd->lock);
+       /* Check if HOST Mode */
+       if (dwc_otg_is_host_mode(core_if)) {
+               gintsts.d32 = dwc_otg_read_core_intr(core_if);
+               if (!gintsts.d32) {
+                       DWC_SPINUNLOCK(dwc_otg_hcd->lock);
+                       return 0;
+               }
+#ifdef DEBUG
+               /* Don't print debug message in the interrupt handler on SOF */
+#ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+                       DWC_DEBUGPL(DBG_HCDI, "\n");
+#endif
+
+#ifdef DEBUG
+#ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+                       DWC_DEBUGPL(DBG_HCDI,
+                                   "DWC OTG HCD Interrupt Detected gintsts&gintmsk=0x%08x core_if=%p\n",
+                                   gintsts.d32, core_if);
+#endif
+
+               if (gintsts.b.sofintr) {
+                       retval |= dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd);
+               }
+               if (gintsts.b.rxstsqlvl) {
+                       retval |=
+                           dwc_otg_hcd_handle_rx_status_q_level_intr
+                           (dwc_otg_hcd);
+               }
+               if (gintsts.b.nptxfempty) {
+                       retval |=
+                           dwc_otg_hcd_handle_np_tx_fifo_empty_intr
+                           (dwc_otg_hcd);
+               }
+               if (gintsts.b.i2cintr) {
+                       /** @todo Implement i2cintr handler. */
+               }
+               if (gintsts.b.portintr) {
+                       retval |= dwc_otg_hcd_handle_port_intr(dwc_otg_hcd);
+               }
+               if (gintsts.b.hcintr) {
+                       retval |= dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd);
+               }
+               if (gintsts.b.ptxfempty) {
+                       retval |=
+                           dwc_otg_hcd_handle_perio_tx_fifo_empty_intr
+                           (dwc_otg_hcd);
+               }
+#ifdef DEBUG
+#ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+               {
+                       DWC_DEBUGPL(DBG_HCDI,
+                                   "DWC OTG HCD Finished Servicing Interrupts\n");
+                       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintsts=0x%08x\n",
+                                   DWC_READ_REG32(&global_regs->gintsts));
+                       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintmsk=0x%08x\n",
+                                   DWC_READ_REG32(&global_regs->gintmsk));
+               }
+#endif
+
+#ifdef DEBUG
+#ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+                       DWC_DEBUGPL(DBG_HCDI, "\n");
+#endif
+
+       }
+       DWC_SPINUNLOCK(dwc_otg_hcd->lock);
+       return retval;
+}
+
+#ifdef DWC_TRACK_MISSED_SOFS
+#warning Compiling code to track missed SOFs
+#define FRAME_NUM_ARRAY_SIZE 1000
+/**
+ * This function is for debug only.
+ */
+static inline void track_missed_sofs(uint16_t curr_frame_number)
+{
+       static uint16_t frame_num_array[FRAME_NUM_ARRAY_SIZE];
+       static uint16_t last_frame_num_array[FRAME_NUM_ARRAY_SIZE];
+       static int frame_num_idx = 0;
+       static uint16_t last_frame_num = DWC_HFNUM_MAX_FRNUM;
+       static int dumped_frame_num_array = 0;
+
+       if (frame_num_idx < FRAME_NUM_ARRAY_SIZE) {
+               if (((last_frame_num + 1) & DWC_HFNUM_MAX_FRNUM) !=
+                   curr_frame_number) {
+                       frame_num_array[frame_num_idx] = curr_frame_number;
+                       last_frame_num_array[frame_num_idx++] = last_frame_num;
+               }
+       } else if (!dumped_frame_num_array) {
+               int i;
+               DWC_PRINTF("Frame     Last Frame\n");
+               DWC_PRINTF("-----     ----------\n");
+               for (i = 0; i < FRAME_NUM_ARRAY_SIZE; i++) {
+                       DWC_PRINTF("0x%04x    0x%04x\n",
+                                  frame_num_array[i], last_frame_num_array[i]);
+               }
+               dumped_frame_num_array = 1;
+       }
+       last_frame_num = curr_frame_number;
+}
+#endif
+
+/**
+ * Handles the start-of-frame interrupt in host mode. Non-periodic
+ * transactions may be queued to the DWC_otg controller for the current
+ * (micro)frame. Periodic transactions may be queued to the controller for the
+ * next (micro)frame.
+ */
+int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * hcd)
+{
+       hfnum_data_t hfnum;
+       dwc_list_link_t *qh_entry;
+       dwc_otg_qh_t *qh;
+       dwc_otg_transaction_type_e tr_type;
+       gintsts_data_t gintsts = {.d32 = 0 };
+
+       hfnum.d32 =
+           DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
+
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCD, "--Start of Frame Interrupt--\n");
+#endif
+       hcd->frame_number = hfnum.b.frnum;
+
+#ifdef DEBUG
+       hcd->frrem_accum += hfnum.b.frrem;
+       hcd->frrem_samples++;
+#endif
+
+#ifdef DWC_TRACK_MISSED_SOFS
+       track_missed_sofs(hcd->frame_number);
+#endif
+       /* Determine whether any periodic QHs should be executed. */
+       qh_entry = DWC_LIST_FIRST(&hcd->periodic_sched_inactive);
+       while (qh_entry != &hcd->periodic_sched_inactive) {
+               qh = DWC_LIST_ENTRY(qh_entry, dwc_otg_qh_t, qh_list_entry);
+               qh_entry = qh_entry->next;
+               if (dwc_frame_num_le(qh->sched_frame, hcd->frame_number)) {
+                       /*
+                        * Move QH to the ready list to be executed next
+                        * (micro)frame.
+                        */
+                       DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_ready,
+                                          &qh->qh_list_entry);
+               }
+       }
+       tr_type = dwc_otg_hcd_select_transactions(hcd);
+       if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+               dwc_otg_hcd_queue_transactions(hcd, tr_type);
+       }
+
+       /* Clear interrupt */
+       gintsts.b.sofintr = 1;
+       DWC_WRITE_REG32(&hcd->core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/** Handles the Rx Status Queue Level Interrupt, which indicates that there is at
+ * least one packet in the Rx FIFO.  The packets are moved from the FIFO to
+ * memory if the DWC_otg controller is operating in Slave mode. */
+int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       host_grxsts_data_t grxsts;
+       dwc_hc_t *hc = NULL;
+
+       DWC_DEBUGPL(DBG_HCD, "--RxStsQ Level Interrupt--\n");
+
+       grxsts.d32 =
+           DWC_READ_REG32(&dwc_otg_hcd->core_if->core_global_regs->grxstsp);
+
+       hc = dwc_otg_hcd->hc_ptr_array[grxsts.b.chnum];
+       if (!hc) {
+               DWC_ERROR("Unable to get corresponding channel\n");
+               return 0;
+       }
+
+       /* Packet Status */
+       DWC_DEBUGPL(DBG_HCDV, "    Ch num = %d\n", grxsts.b.chnum);
+       DWC_DEBUGPL(DBG_HCDV, "    Count = %d\n", grxsts.b.bcnt);
+       DWC_DEBUGPL(DBG_HCDV, "    DPID = %d, hc.dpid = %d\n", grxsts.b.dpid,
+                   hc->data_pid_start);
+       DWC_DEBUGPL(DBG_HCDV, "    PStatus = %d\n", grxsts.b.pktsts);
+
+       switch (grxsts.b.pktsts) {
+       case DWC_GRXSTS_PKTSTS_IN:
+               /* Read the data into the host buffer. */
+               if (grxsts.b.bcnt > 0) {
+                       dwc_otg_read_packet(dwc_otg_hcd->core_if,
+                                           hc->xfer_buff, grxsts.b.bcnt);
+
+                       /* Update the HC fields for the next packet received. */
+                       hc->xfer_count += grxsts.b.bcnt;
+                       hc->xfer_buff += grxsts.b.bcnt;
+               }
+
+       case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+       case DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
+       case DWC_GRXSTS_PKTSTS_CH_HALTED:
+               /* Handled in interrupt, just ignore data */
+               break;
+       default:
+               DWC_ERROR("RX_STS_Q Interrupt: Unknown status %d\n",
+                         grxsts.b.pktsts);
+               break;
+       }
+
+       return 1;
+}
+
+/** This interrupt occurs when the non-periodic Tx FIFO is half-empty. More
+ * data packets may be written to the FIFO for OUT transfers. More requests
+ * may be written to the non-periodic request queue for IN transfers. This
+ * interrupt is enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Non-Periodic TxFIFO Empty Interrupt--\n");
+       dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
+                                      DWC_OTG_TRANSACTION_NON_PERIODIC);
+       return 1;
+}
+
+/** This interrupt occurs when the periodic Tx FIFO is half-empty. More data
+ * packets may be written to the FIFO for OUT transfers. More requests may be
+ * written to the periodic request queue for IN transfers. This interrupt is
+ * enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Periodic TxFIFO Empty Interrupt--\n");
+       dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
+                                      DWC_OTG_TRANSACTION_PERIODIC);
+       return 1;
+}
+
+/** There are multiple conditions that can cause a port interrupt. This function
+ * determines which interrupt conditions have occurred and handles them
+ * appropriately. */
+int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       int retval = 0;
+       hprt0_data_t hprt0;
+       hprt0_data_t hprt0_modify;
+
+       hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+       hprt0_modify.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+
+       /* Clear appropriate bits in HPRT0 to clear the interrupt bit in
+        * GINTSTS */
+
+       hprt0_modify.b.prtena = 0;
+       hprt0_modify.b.prtconndet = 0;
+       hprt0_modify.b.prtenchng = 0;
+       hprt0_modify.b.prtovrcurrchng = 0;
+
+       /* Port Connect Detected
+        * Set flag and clear if detected */
+       if (dwc_otg_hcd->core_if->hibernation_suspend == 1) {
+               // Dont modify port status if we are in hibernation state
+               hprt0_modify.b.prtconndet = 1;
+               hprt0_modify.b.prtenchng = 1;
+               DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
+               hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+               return retval;
+       }
+
+       if (hprt0.b.prtconndet) {
+               /** @todo - check if steps performed in 'else' block should be perfromed regardles adp */
+               if (dwc_otg_hcd->core_if->adp_enable &&         
+                               dwc_otg_hcd->core_if->adp.vbuson_timer_started == 1) {
+                       DWC_PRINTF("PORT CONNECT DETECTED ----------------\n");
+                       DWC_TIMER_CANCEL(dwc_otg_hcd->core_if->adp.vbuson_timer);
+                       dwc_otg_hcd->core_if->adp.vbuson_timer_started = 0;
+                       /* TODO - check if this is required, as
+                        * host initialization was already performed
+                        * after initial ADP probing
+                        */
+                       /*dwc_otg_hcd->core_if->adp.vbuson_timer_started = 0;
+                       dwc_otg_core_init(dwc_otg_hcd->core_if);
+                       dwc_otg_enable_global_interrupts(dwc_otg_hcd->core_if);
+                       cil_hcd_start(dwc_otg_hcd->core_if);*/
+               } else {
+               
+                       DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x "
+                                   "Port Connect Detected--\n", hprt0.d32);
+                       dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+                       dwc_otg_hcd->flags.b.port_connect_status = 1;
+                       hprt0_modify.b.prtconndet = 1;
+       
+                       /* B-Device has connected, Delete the connection timer. */
+                       DWC_TIMER_CANCEL(dwc_otg_hcd->conn_timer);
+               }
+               /* The Hub driver asserts a reset when it sees port connect
+                * status change flag */
+               retval |= 1;
+       }
+
+       /* Port Enable Changed
+        * Clear if detected - Set internal flag if disabled */
+       if (hprt0.b.prtenchng) {
+               DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
+                           "Port Enable Changed--\n", hprt0.d32);
+               hprt0_modify.b.prtenchng = 1;
+               if (hprt0.b.prtena == 1) {
+                       hfir_data_t hfir;
+                       int do_reset = 0;
+                       dwc_otg_core_params_t *params =
+                           dwc_otg_hcd->core_if->core_params;
+                       dwc_otg_core_global_regs_t *global_regs =
+                           dwc_otg_hcd->core_if->core_global_regs;
+                       dwc_otg_host_if_t *host_if =
+                           dwc_otg_hcd->core_if->host_if;
+                           
+                       /* Every time when port enables calculate
+                        * HFIR.FrInterval
+                        */
+                       hfir.d32 = DWC_READ_REG32(&host_if->host_global_regs->hfir);
+                       hfir.b.frint = calc_frame_interval(dwc_otg_hcd->core_if);
+                       DWC_WRITE_REG32(&host_if->host_global_regs->hfir, hfir.d32);
+
+                       /* Check if we need to adjust the PHY clock speed for
+                        * low power and adjust it */
+                       if (params->host_support_fs_ls_low_power) {
+                               gusbcfg_data_t usbcfg;
+
+                               usbcfg.d32 =
+                                   DWC_READ_REG32(&global_regs->gusbcfg);
+
+                               if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED
+                                   || hprt0.b.prtspd ==
+                                   DWC_HPRT0_PRTSPD_FULL_SPEED) {
+                                       /*
+                                        * Low power
+                                        */
+                                       hcfg_data_t hcfg;
+                                       if (usbcfg.b.phylpwrclksel == 0) {
+                                               /* Set PHY low power clock select for FS/LS devices */
+                                               usbcfg.b.phylpwrclksel = 1;
+                                               DWC_WRITE_REG32
+                                                   (&global_regs->gusbcfg,
+                                                    usbcfg.d32);
+                                               do_reset = 1;
+                                       }
+
+                                       hcfg.d32 =
+                                           DWC_READ_REG32
+                                           (&host_if->host_global_regs->hcfg);
+
+                                       if (hprt0.b.prtspd ==
+                                           DWC_HPRT0_PRTSPD_LOW_SPEED
+                                           && params->host_ls_low_power_phy_clk
+                                           ==
+                                           DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)
+                                       {
+                                               /* 6 MHZ */
+                                               DWC_DEBUGPL(DBG_CIL,
+                                                           "FS_PHY programming HCFG to 6 MHz (Low Power)\n");
+                                               if (hcfg.b.fslspclksel !=
+                                                   DWC_HCFG_6_MHZ) {
+                                                       hcfg.b.fslspclksel =
+                                                           DWC_HCFG_6_MHZ;
+                                                       DWC_WRITE_REG32
+                                                           (&host_if->host_global_regs->hcfg,
+                                                            hcfg.d32);
+                                                       do_reset = 1;
+                                               }
+                                       } else {
+                                               /* 48 MHZ */
+                                               DWC_DEBUGPL(DBG_CIL,
+                                                           "FS_PHY programming HCFG to 48 MHz ()\n");
+                                               if (hcfg.b.fslspclksel !=
+                                                   DWC_HCFG_48_MHZ) {
+                                                       hcfg.b.fslspclksel =
+                                                           DWC_HCFG_48_MHZ;
+                                                       DWC_WRITE_REG32
+                                                           (&host_if->host_global_regs->hcfg,
+                                                            hcfg.d32);
+                                                       do_reset = 1;
+                                               }
+                                       }
+                               } else {
+                                       /*
+                                        * Not low power
+                                        */
+                                       if (usbcfg.b.phylpwrclksel == 1) {
+                                               usbcfg.b.phylpwrclksel = 0;
+                                               DWC_WRITE_REG32
+                                                   (&global_regs->gusbcfg,
+                                                    usbcfg.d32);
+                                               do_reset = 1;
+                                       }
+                               }
+
+                               if (do_reset) {
+                                       DWC_TASK_SCHEDULE(dwc_otg_hcd->reset_tasklet);
+                               }
+                       }
+
+                       if (!do_reset) {
+                               /* Port has been enabled set the reset change flag */
+                               dwc_otg_hcd->flags.b.port_reset_change = 1;
+                       }
+               } else {
+                       dwc_otg_hcd->flags.b.port_enable_change = 1;
+               }
+               retval |= 1;
+       }
+
+       /** Overcurrent Change Interrupt */
+       if (hprt0.b.prtovrcurrchng) {
+               DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
+                           "Port Overcurrent Changed--\n", hprt0.d32);
+               dwc_otg_hcd->flags.b.port_over_current_change = 1;
+               hprt0_modify.b.prtovrcurrchng = 1;
+               retval |= 1;
+       }
+
+       /* Clear Port Interrupts */
+       DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
+
+       return retval;
+}
+
+/** This interrupt indicates that one or more host channels has a pending
+ * interrupt. There are multiple conditions that can cause each host channel
+ * interrupt. This function determines which conditions have occurred for each
+ * host channel interrupt and handles them appropriately. */
+int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       int i;
+       int retval = 0;
+       haint_data_t haint;
+
+       /* Clear appropriate bits in HCINTn to clear the interrupt bit in
+        * GINTSTS */
+
+       haint.d32 = dwc_otg_read_host_all_channels_intr(dwc_otg_hcd->core_if);
+
+       for (i = 0; i < dwc_otg_hcd->core_if->core_params->host_channels; i++) {
+               if (haint.b2.chint & (1 << i)) {
+                       retval |= dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd, i);
+               }
+       }
+
+       return retval;
+}
+
+/**
+ * Gets the actual length of a transfer after the transfer halts. _halt_status
+ * holds the reason for the halt.
+ *
+ * For IN transfers where halt_status is DWC_OTG_HC_XFER_COMPLETE,
+ * *short_read is set to 1 upon return if less than the requested
+ * number of bytes were transferred. Otherwise, *short_read is set to 0 upon
+ * return. short_read may also be NULL on entry, in which case it remains
+ * unchanged.
+ */
+static uint32_t get_actual_xfer_length(dwc_hc_t * hc,
+                                      dwc_otg_hc_regs_t * hc_regs,
+                                      dwc_otg_qtd_t * qtd,
+                                      dwc_otg_halt_status_e halt_status,
+                                      int *short_read)
+{
+       hctsiz_data_t hctsiz;
+       uint32_t length;
+
+       if (short_read != NULL) {
+               *short_read = 0;
+       }
+       hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+
+       if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+               if (hc->ep_is_in) {
+                       length = hc->xfer_len - hctsiz.b.xfersize;
+                       if (short_read != NULL) {
+                               *short_read = (hctsiz.b.xfersize != 0);
+                       }
+               } else if (hc->qh->do_split) {
+                       length = qtd->ssplit_out_xfer_count;
+               } else {
+                       length = hc->xfer_len;
+               }
+       } else {
+               /*
+                * Must use the hctsiz.pktcnt field to determine how much data
+                * has been transferred. This field reflects the number of
+                * packets that have been transferred via the USB. This is
+                * always an integral number of packets if the transfer was
+                * halted before its normal completion. (Can't use the
+                * hctsiz.xfersize field because that reflects the number of
+                * bytes transferred via the AHB, not the USB).
+                */
+               length =
+                   (hc->start_pkt_count - hctsiz.b.pktcnt) * hc->max_packet;
+       }
+
+       return length;
+}
+
+/**
+ * Updates the state of the URB after a Transfer Complete interrupt on the
+ * host channel. Updates the actual_length field of the URB based on the
+ * number of bytes transferred via the host channel. Sets the URB status
+ * if the data transfer is finished.
+ *
+ * @return 1 if the data transfer specified by the URB is completely finished,
+ * 0 otherwise.
+ */
+static int update_urb_state_xfer_comp(dwc_hc_t * hc,
+                                     dwc_otg_hc_regs_t * hc_regs,
+                                     dwc_otg_hcd_urb_t * urb,
+                                     dwc_otg_qtd_t * qtd)
+{
+       int xfer_done = 0;
+       int short_read = 0;
+
+       int xfer_length;
+
+       xfer_length = get_actual_xfer_length(hc, hc_regs, qtd,
+                                            DWC_OTG_HC_XFER_COMPLETE,
+                                            &short_read);
+
+
+       /* non DWORD-aligned buffer case handling. */
+       if (hc->align_buff && xfer_length && hc->ep_is_in) {
+               dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
+                          xfer_length);
+       }
+
+       urb->actual_length += xfer_length;
+
+       if (xfer_length && (hc->ep_type == DWC_OTG_EP_TYPE_BULK) &&
+           (urb->flags & URB_SEND_ZERO_PACKET)
+           && (urb->actual_length == urb->length)
+           && !(urb->length % hc->max_packet)) {
+               xfer_done = 0;
+       } else if (short_read || urb->actual_length >= urb->length) {
+               xfer_done = 1;
+               urb->status = 0;
+       }
+       
+#ifdef DEBUG
+       {
+               hctsiz_data_t hctsiz;
+               hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+               DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+                           __func__, (hc->ep_is_in ? "IN" : "OUT"),
+                           hc->hc_num);
+               DWC_DEBUGPL(DBG_HCDV, "  hc->xfer_len %d\n", hc->xfer_len);
+               DWC_DEBUGPL(DBG_HCDV, "  hctsiz.xfersize %d\n",
+                           hctsiz.b.xfersize);
+               DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
+                           urb->length);
+               DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n",
+                           urb->actual_length);
+               DWC_DEBUGPL(DBG_HCDV, "  short_read %d, xfer_done %d\n",
+                           short_read, xfer_done);
+       }
+#endif
+
+       return xfer_done;
+}
+
+/*
+ * Save the starting data toggle for the next transfer. The data toggle is
+ * saved in the QH for non-control transfers and it's saved in the QTD for
+ * control transfers.
+ */
+void dwc_otg_hcd_save_data_toggle(dwc_hc_t * hc,
+                            dwc_otg_hc_regs_t * hc_regs, dwc_otg_qtd_t * qtd)
+{
+       hctsiz_data_t hctsiz;
+       hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+
+       if (hc->ep_type != DWC_OTG_EP_TYPE_CONTROL) {
+               dwc_otg_qh_t *qh = hc->qh;
+               if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+                       qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+               } else {
+                       qh->data_toggle = DWC_OTG_HC_PID_DATA1;
+               }
+       } else {
+               if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+                       qtd->data_toggle = DWC_OTG_HC_PID_DATA0;
+               } else {
+                       qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+               }
+       }
+}
+
+/**
+ * Updates the state of an Isochronous URB when the transfer is stopped for
+ * any reason. The fields of the current entry in the frame descriptor array
+ * are set based on the transfer state and the input _halt_status. Completes
+ * the Isochronous URB if all the URB frames have been completed.
+ *
+ * @return DWC_OTG_HC_XFER_COMPLETE if there are more frames remaining to be
+ * transferred in the URB. Otherwise return DWC_OTG_HC_XFER_URB_COMPLETE.
+ */
+static dwc_otg_halt_status_e
+update_isoc_urb_state(dwc_otg_hcd_t * hcd,
+                     dwc_hc_t * hc,
+                     dwc_otg_hc_regs_t * hc_regs,
+                     dwc_otg_qtd_t * qtd, dwc_otg_halt_status_e halt_status)
+{
+       dwc_otg_hcd_urb_t *urb = qtd->urb;
+       dwc_otg_halt_status_e ret_val = halt_status;
+       struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+
+       frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
+       switch (halt_status) {
+       case DWC_OTG_HC_XFER_COMPLETE:
+               frame_desc->status = 0;
+               frame_desc->actual_length =
+                   get_actual_xfer_length(hc, hc_regs, qtd, halt_status, NULL);
+
+               /* non DWORD-aligned buffer case handling. */
+               if (hc->align_buff && frame_desc->actual_length && hc->ep_is_in) {
+                       dwc_memcpy(urb->buf + frame_desc->offset + qtd->isoc_split_offset,
+                                  hc->qh->dw_align_buf, frame_desc->actual_length);
+               }
+               
+               break;
+       case DWC_OTG_HC_XFER_FRAME_OVERRUN:
+               urb->error_count++;
+               if (hc->ep_is_in) {
+                       frame_desc->status = -DWC_E_NO_STREAM_RES;
+               } else {
+                       frame_desc->status = -DWC_E_COMMUNICATION;
+               }
+               frame_desc->actual_length = 0;
+               break;
+       case DWC_OTG_HC_XFER_BABBLE_ERR:
+               urb->error_count++;
+               frame_desc->status = -DWC_E_OVERFLOW;
+               /* Don't need to update actual_length in this case. */
+               break;
+       case DWC_OTG_HC_XFER_XACT_ERR:
+               urb->error_count++;
+               frame_desc->status = -DWC_E_PROTOCOL;
+               frame_desc->actual_length =
+                   get_actual_xfer_length(hc, hc_regs, qtd, halt_status, NULL);
+
+               /* non DWORD-aligned buffer case handling. */
+               if (hc->align_buff && frame_desc->actual_length && hc->ep_is_in) {
+                       dwc_memcpy(urb->buf + frame_desc->offset + qtd->isoc_split_offset,
+                                  hc->qh->dw_align_buf, frame_desc->actual_length);
+               }
+               /* Skip whole frame */
+               if (hc->qh->do_split && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) &&
+                   hc->ep_is_in && hcd->core_if->dma_enable) {
+                       qtd->complete_split = 0;
+                       qtd->isoc_split_offset = 0;
+               }
+
+               break;
+       default:
+               DWC_ASSERT(1, "Unhandled _halt_status (%d)\n", halt_status);
+               break;
+       }
+       if (++qtd->isoc_frame_index == urb->packet_count) {
+               /*
+                * urb->status is not used for isoc transfers.
+                * The individual frame_desc statuses are used instead.
+                */
+               hcd->fops->complete(hcd, urb->priv, urb, 0);
+               ret_val = DWC_OTG_HC_XFER_URB_COMPLETE;
+       } else {
+               ret_val = DWC_OTG_HC_XFER_COMPLETE;
+       }
+       return ret_val;
+}
+
+/**
+ * Frees the first QTD in the QH's list if free_qtd is 1. For non-periodic
+ * QHs, removes the QH from the active non-periodic schedule. If any QTDs are
+ * still linked to the QH, the QH is added to the end of the inactive
+ * non-periodic schedule. For periodic QHs, removes the QH from the periodic
+ * schedule if no more QTDs are linked to the QH.
+ */
+static void deactivate_qh(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, int free_qtd)
+{
+       int continue_split = 0;
+       dwc_otg_qtd_t *qtd;
+
+       DWC_DEBUGPL(DBG_HCDV, "  %s(%p,%p,%d)\n", __func__, hcd, qh, free_qtd);
+
+       qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+
+       if (qtd->complete_split) {
+               continue_split = 1;
+       } else if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID ||
+                  qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END) {
+               continue_split = 1;
+       }
+
+       if (free_qtd) {
+               dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+               continue_split = 0;
+       }
+
+       qh->channel = NULL;
+       dwc_otg_hcd_qh_deactivate(hcd, qh, continue_split);
+}
+
+/**
+ * Releases a host channel for use by other transfers. Attempts to select and
+ * queue more transactions since at least one host channel is available.
+ *
+ * @param hcd The HCD state structure.
+ * @param hc The host channel to release.
+ * @param qtd The QTD associated with the host channel. This QTD may be freed
+ * if the transfer is complete or an error has occurred.
+ * @param halt_status Reason the channel is being released. This status
+ * determines the actions taken by this function.
+ */
+static void release_channel(dwc_otg_hcd_t * hcd,
+                           dwc_hc_t * hc,
+                           dwc_otg_qtd_t * qtd,
+                           dwc_otg_halt_status_e halt_status)
+{
+       dwc_otg_transaction_type_e tr_type;
+       int free_qtd;
+       dwc_irqflags_t flags;
+       dwc_spinlock_t *channel_lock = DWC_SPINLOCK_ALLOC();
+
+       DWC_DEBUGPL(DBG_HCDV, "  %s: channel %d, halt_status %d, xfer_len %d\n",
+                   __func__, hc->hc_num, halt_status, hc->xfer_len);
+
+       switch (halt_status) {
+       case DWC_OTG_HC_XFER_URB_COMPLETE:
+               free_qtd = 1;
+               break;
+       case DWC_OTG_HC_XFER_AHB_ERR:
+       case DWC_OTG_HC_XFER_STALL:
+       case DWC_OTG_HC_XFER_BABBLE_ERR:
+               free_qtd = 1;
+               break;
+       case DWC_OTG_HC_XFER_XACT_ERR:
+               if (qtd->error_count >= 3) {
+                       DWC_DEBUGPL(DBG_HCDV,
+                                   "  Complete URB with transaction error\n");
+                       free_qtd = 1;
+                       qtd->urb->status = -DWC_E_PROTOCOL;
+                       hcd->fops->complete(hcd, qtd->urb->priv,
+                                           qtd->urb, -DWC_E_PROTOCOL);
+               } else {
+                       free_qtd = 0;
+               }
+               break;
+       case DWC_OTG_HC_XFER_URB_DEQUEUE:
+               /*
+                * The QTD has already been removed and the QH has been
+                * deactivated. Don't want to do anything except release the
+                * host channel and try to queue more transfers.
+                */
+               goto cleanup;
+       case DWC_OTG_HC_XFER_NO_HALT_STATUS:
+               free_qtd = 0;
+               break;
+       case DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE:
+               DWC_DEBUGPL(DBG_HCDV,
+                       "  Complete URB with I/O error\n");
+               free_qtd = 1;
+               qtd->urb->status = -DWC_E_IO;
+               hcd->fops->complete(hcd, qtd->urb->priv,
+                       qtd->urb, -DWC_E_IO);
+               break;
+       default:
+               free_qtd = 0;
+               break;
+       }
+
+       deactivate_qh(hcd, hc->qh, free_qtd);
+
+cleanup:
+       /*
+        * Release the host channel for use by other transfers. The cleanup
+        * function clears the channel interrupt enables and conditions, so
+        * there's no need to clear the Channel Halted interrupt separately.
+        */
+       dwc_otg_hc_cleanup(hcd->core_if, hc);
+       DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
+
+       if (!microframe_schedule) {
+               switch (hc->ep_type) {
+               case DWC_OTG_EP_TYPE_CONTROL:
+               case DWC_OTG_EP_TYPE_BULK:
+                       hcd->non_periodic_channels--;
+                       break;
+
+               default:
+                       /*
+                        * Don't release reservations for periodic channels here.
+                        * That's done when a periodic transfer is descheduled (i.e.
+                        * when the QH is removed from the periodic schedule).
+                        */
+                       break;
+               }
+       } else {
+
+               DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+               hcd->available_host_channels++;
+               DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+       }
+
+       /* Try to queue more transfers now that there's a free channel. */
+       tr_type = dwc_otg_hcd_select_transactions(hcd);
+       if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+               dwc_otg_hcd_queue_transactions(hcd, tr_type);
+       }
+       DWC_SPINLOCK_FREE(channel_lock);
+}
+
+/**
+ * Halts a host channel. If the channel cannot be halted immediately because
+ * the request queue is full, this function ensures that the FIFO empty
+ * interrupt for the appropriate queue is enabled so that the halt request can
+ * be queued when there is space in the request queue.
+ *
+ * This function may also be called in DMA mode. In that case, the channel is
+ * simply released since the core always halts the channel automatically in
+ * DMA mode.
+ */
+static void halt_channel(dwc_otg_hcd_t * hcd,
+                        dwc_hc_t * hc,
+                        dwc_otg_qtd_t * qtd, dwc_otg_halt_status_e halt_status)
+{
+       if (hcd->core_if->dma_enable) {
+               release_channel(hcd, hc, qtd, halt_status);
+               return;
+       }
+
+       /* Slave mode processing... */
+       dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
+
+       if (hc->halt_on_queue) {
+               gintmsk_data_t gintmsk = {.d32 = 0 };
+               dwc_otg_core_global_regs_t *global_regs;
+               global_regs = hcd->core_if->core_global_regs;
+
+               if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+                   hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+                       /*
+                        * Make sure the Non-periodic Tx FIFO empty interrupt
+                        * is enabled so that the non-periodic schedule will
+                        * be processed.
+                        */
+                       gintmsk.b.nptxfempty = 1;
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
+               } else {
+                       /*
+                        * Move the QH from the periodic queued schedule to
+                        * the periodic assigned schedule. This allows the
+                        * halt to be queued when the periodic schedule is
+                        * processed.
+                        */
+                       DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
+                                          &hc->qh->qh_list_entry);
+
+                       /*
+                        * Make sure the Periodic Tx FIFO Empty interrupt is
+                        * enabled so that the periodic schedule will be
+                        * processed.
+                        */
+                       gintmsk.b.ptxfempty = 1;
+                       DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
+               }
+       }
+}
+
+/**
+ * Performs common cleanup for non-periodic transfers after a Transfer
+ * Complete interrupt. This function should be called after any endpoint type
+ * specific handling is finished to release the host channel.
+ */
+static void complete_non_periodic_xfer(dwc_otg_hcd_t * hcd,
+                                      dwc_hc_t * hc,
+                                      dwc_otg_hc_regs_t * hc_regs,
+                                      dwc_otg_qtd_t * qtd,
+                                      dwc_otg_halt_status_e halt_status)
+{
+       hcint_data_t hcint;
+
+       qtd->error_count = 0;
+
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+       if (hcint.b.nyet) {
+               /*
+                * Got a NYET on the last transaction of the transfer. This
+                * means that the endpoint should be in the PING state at the
+                * beginning of the next transfer.
+                */
+               hc->qh->ping_state = 1;
+               clear_hc_int(hc_regs, nyet);
+       }
+
+       /*
+        * Always halt and release the host channel to make it available for
+        * more transfers. There may still be more phases for a control
+        * transfer or more data packets for a bulk transfer at this point,
+        * but the host channel is still halted. A channel will be reassigned
+        * to the transfer when the non-periodic schedule is processed after
+        * the channel is released. This allows transactions to be queued
+        * properly via dwc_otg_hcd_queue_transactions, which also enables the
+        * Tx FIFO Empty interrupt if necessary.
+        */
+       if (hc->ep_is_in) {
+               /*
+                * IN transfers in Slave mode require an explicit disable to
+                * halt the channel. (In DMA mode, this call simply releases
+                * the channel.)
+                */
+               halt_channel(hcd, hc, qtd, halt_status);
+       } else {
+               /*
+                * The channel is automatically disabled by the core for OUT
+                * transfers in Slave mode.
+                */
+               release_channel(hcd, hc, qtd, halt_status);
+       }
+}
+
+/**
+ * Performs common cleanup for periodic transfers after a Transfer Complete
+ * interrupt. This function should be called after any endpoint type specific
+ * handling is finished to release the host channel.
+ */
+static void complete_periodic_xfer(dwc_otg_hcd_t * hcd,
+                                  dwc_hc_t * hc,
+                                  dwc_otg_hc_regs_t * hc_regs,
+                                  dwc_otg_qtd_t * qtd,
+                                  dwc_otg_halt_status_e halt_status)
+{
+       hctsiz_data_t hctsiz;
+       qtd->error_count = 0;
+
+       hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+       if (!hc->ep_is_in || hctsiz.b.pktcnt == 0) {
+               /* Core halts channel in these cases. */
+               release_channel(hcd, hc, qtd, halt_status);
+       } else {
+               /* Flush any outstanding requests from the Tx queue. */
+               halt_channel(hcd, hc, qtd, halt_status);
+       }
+}
+
+static int32_t handle_xfercomp_isoc_split_in(dwc_otg_hcd_t * hcd,
+                                            dwc_hc_t * hc,
+                                            dwc_otg_hc_regs_t * hc_regs,
+                                            dwc_otg_qtd_t * qtd)
+{
+       uint32_t len;
+       struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+       frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+
+       len = get_actual_xfer_length(hc, hc_regs, qtd,
+                                    DWC_OTG_HC_XFER_COMPLETE, NULL);
+
+       if (!len) {
+               qtd->complete_split = 0;
+               qtd->isoc_split_offset = 0;
+               return 0;
+       }
+       frame_desc->actual_length += len;
+
+       if (hc->align_buff && len)
+               dwc_memcpy(qtd->urb->buf + frame_desc->offset +
+                          qtd->isoc_split_offset, hc->qh->dw_align_buf, len);
+       qtd->isoc_split_offset += len;
+
+       if (frame_desc->length == frame_desc->actual_length) {
+               frame_desc->status = 0;
+               qtd->isoc_frame_index++;
+               qtd->complete_split = 0;
+               qtd->isoc_split_offset = 0;
+       }
+
+       if (qtd->isoc_frame_index == qtd->urb->packet_count) {
+               hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+               release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+       } else {
+               release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+       }
+
+       return 1;               /* Indicates that channel released */
+}
+
+/**
+ * Handles a host channel Transfer Complete interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xfercomp_intr(dwc_otg_hcd_t * hcd,
+                                      dwc_hc_t * hc,
+                                      dwc_otg_hc_regs_t * hc_regs,
+                                      dwc_otg_qtd_t * qtd)
+{
+       int urb_xfer_done;
+       dwc_otg_halt_status_e halt_status = DWC_OTG_HC_XFER_COMPLETE;
+       dwc_otg_hcd_urb_t *urb = qtd->urb;
+       int pipe_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
+
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "Transfer Complete--\n", hc->hc_num);
+
+       if (hcd->core_if->dma_desc_enable) {
+               dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs, halt_status);
+               if (pipe_type == UE_ISOCHRONOUS) {
+                       /* Do not disable the interrupt, just clear it */
+                       clear_hc_int(hc_regs, xfercomp);
+                       return 1;
+               }
+               goto handle_xfercomp_done;
+       }
+
+       /*
+        * Handle xfer complete on CSPLIT.
+        */
+
+       if (hc->qh->do_split) {
+               if ((hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && hc->ep_is_in
+                   && hcd->core_if->dma_enable) {
+                       if (qtd->complete_split
+                           && handle_xfercomp_isoc_split_in(hcd, hc, hc_regs,
+                                                            qtd))
+                               goto handle_xfercomp_done;
+               } else {
+                       qtd->complete_split = 0;
+               }
+       }
+
+       /* Update the QTD and URB states. */
+       switch (pipe_type) {
+       case UE_CONTROL:
+               switch (qtd->control_phase) {
+               case DWC_OTG_CONTROL_SETUP:
+                       if (urb->length > 0) {
+                               qtd->control_phase = DWC_OTG_CONTROL_DATA;
+                       } else {
+                               qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+                       }
+                       DWC_DEBUGPL(DBG_HCDV,
+                                   "  Control setup transaction done\n");
+                       halt_status = DWC_OTG_HC_XFER_COMPLETE;
+                       break;
+               case DWC_OTG_CONTROL_DATA:{
+                               urb_xfer_done =
+                                   update_urb_state_xfer_comp(hc, hc_regs, urb,
+                                                              qtd);
+                               if (urb_xfer_done) {
+                                       qtd->control_phase =
+                                           DWC_OTG_CONTROL_STATUS;
+                                       DWC_DEBUGPL(DBG_HCDV,
+                                                   "  Control data transfer done\n");
+                               } else {
+                                       dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+                               }
+                               halt_status = DWC_OTG_HC_XFER_COMPLETE;
+                               break;
+                       }
+               case DWC_OTG_CONTROL_STATUS:
+                       DWC_DEBUGPL(DBG_HCDV, "  Control transfer complete\n");
+                       if (urb->status == -DWC_E_IN_PROGRESS) {
+                               urb->status = 0;
+                       }
+                       hcd->fops->complete(hcd, urb->priv, urb, urb->status);
+                       halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+                       break;
+               }
+
+               complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+               break;
+       case UE_BULK:
+               DWC_DEBUGPL(DBG_HCDV, "  Bulk transfer complete\n");
+               urb_xfer_done =
+                   update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+               if (urb_xfer_done) {
+                       hcd->fops->complete(hcd, urb->priv, urb, urb->status);
+                       halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+               } else {
+                       halt_status = DWC_OTG_HC_XFER_COMPLETE;
+               }
+
+               dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+               complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+               break;
+       case UE_INTERRUPT:
+               DWC_DEBUGPL(DBG_HCDV, "  Interrupt transfer complete\n");
+               urb_xfer_done =
+                       update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+
+               /*
+                * Interrupt URB is done on the first transfer complete
+                * interrupt.
+                */
+               if (urb_xfer_done) {
+                               hcd->fops->complete(hcd, urb->priv, urb, urb->status);
+                               halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+               } else {
+                               halt_status = DWC_OTG_HC_XFER_COMPLETE;
+               }
+
+               dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+               complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+               break;
+       case UE_ISOCHRONOUS:
+               DWC_DEBUGPL(DBG_HCDV, "  Isochronous transfer complete\n");
+               if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+                       halt_status =
+                           update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+                                                 DWC_OTG_HC_XFER_COMPLETE);
+               }
+               complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+               break;
+       }
+
+handle_xfercomp_done:
+       disable_hc_int(hc_regs, xfercompl);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel STALL interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_stall_intr(dwc_otg_hcd_t * hcd,
+                                   dwc_hc_t * hc,
+                                   dwc_otg_hc_regs_t * hc_regs,
+                                   dwc_otg_qtd_t * qtd)
+{
+       dwc_otg_hcd_urb_t *urb = qtd->urb;
+       int pipe_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
+
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "STALL Received--\n", hc->hc_num);
+
+       if (hcd->core_if->dma_desc_enable) {
+               dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs, DWC_OTG_HC_XFER_STALL);
+               goto handle_stall_done;
+       }
+
+       if (pipe_type == UE_CONTROL) {
+               hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_PIPE);
+       }
+
+       if (pipe_type == UE_BULK || pipe_type == UE_INTERRUPT) {
+               hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_PIPE);
+               /*
+                * USB protocol requires resetting the data toggle for bulk
+                * and interrupt endpoints when a CLEAR_FEATURE(ENDPOINT_HALT)
+                * setup command is issued to the endpoint. Anticipate the
+                * CLEAR_FEATURE command since a STALL has occurred and reset
+                * the data toggle now.
+                */
+               hc->qh->data_toggle = 0;
+       }
+
+       halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_STALL);
+
+handle_stall_done:
+       disable_hc_int(hc_regs, stall);
+
+       return 1;
+}
+
+/*
+ * Updates the state of the URB when a transfer has been stopped due to an
+ * abnormal condition before the transfer completes. Modifies the
+ * actual_length field of the URB to reflect the number of bytes that have
+ * actually been transferred via the host channel.
+ */
+static void update_urb_state_xfer_intr(dwc_hc_t * hc,
+                                      dwc_otg_hc_regs_t * hc_regs,
+                                      dwc_otg_hcd_urb_t * urb,
+                                      dwc_otg_qtd_t * qtd,
+                                      dwc_otg_halt_status_e halt_status)
+{
+       uint32_t bytes_transferred = get_actual_xfer_length(hc, hc_regs, qtd,
+                                                           halt_status, NULL);
+       /* non DWORD-aligned buffer case handling. */
+       if (hc->align_buff && bytes_transferred && hc->ep_is_in) {
+               dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
+                          bytes_transferred);
+       }
+
+       urb->actual_length += bytes_transferred;
+
+#ifdef DEBUG
+       {
+               hctsiz_data_t hctsiz;
+               hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+               DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+                           __func__, (hc->ep_is_in ? "IN" : "OUT"),
+                           hc->hc_num);
+               DWC_DEBUGPL(DBG_HCDV, "  hc->start_pkt_count %d\n",
+                           hc->start_pkt_count);
+               DWC_DEBUGPL(DBG_HCDV, "  hctsiz.pktcnt %d\n", hctsiz.b.pktcnt);
+               DWC_DEBUGPL(DBG_HCDV, "  hc->max_packet %d\n", hc->max_packet);
+               DWC_DEBUGPL(DBG_HCDV, "  bytes_transferred %d\n",
+                           bytes_transferred);
+               DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n",
+                           urb->actual_length);
+               DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
+                           urb->length);
+       }
+#endif
+}
+
+/**
+ * Handles a host channel NAK interrupt. This handler may be called in either
+ * DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * hcd,
+                                 dwc_hc_t * hc,
+                                 dwc_otg_hc_regs_t * hc_regs,
+                                 dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "NAK Received--\n", hc->hc_num);
+
+       /*
+        * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and
+        * interrupt.  Re-start the SSPLIT transfer.
+        */
+       if (hc->do_split) {
+               if (hc->complete_split) {
+                       qtd->error_count = 0;
+               }
+               qtd->complete_split = 0;
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+               goto handle_nak_done;
+       }
+
+       switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+       case UE_CONTROL:
+       case UE_BULK:
+               if (hcd->core_if->dma_enable && hc->ep_is_in) {
+                       /*
+                        * NAK interrupts are enabled on bulk/control IN
+                        * transfers in DMA mode for the sole purpose of
+                        * resetting the error count after a transaction error
+                        * occurs. The core will continue transferring data.
+                        */
+                       qtd->error_count = 0;
+                       goto handle_nak_done;
+               }
+
+               /*
+                * NAK interrupts normally occur during OUT transfers in DMA
+                * or Slave mode. For IN transfers, more requests will be
+                * queued as request queue space is available.
+                */
+               qtd->error_count = 0;
+
+               if (!hc->qh->ping_state) {
+                       update_urb_state_xfer_intr(hc, hc_regs,
+                                                  qtd->urb, qtd,
+                                                  DWC_OTG_HC_XFER_NAK);
+                       dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+
+                       if (hc->speed == DWC_OTG_EP_SPEED_HIGH)
+                               hc->qh->ping_state = 1;
+               }
+
+               /*
+                * Halt the channel so the transfer can be re-started from
+                * the appropriate point or the PING protocol will
+                * start/continue.
+                */
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+               break;
+       case UE_INTERRUPT:
+               qtd->error_count = 0;
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+               break;
+       case UE_ISOCHRONOUS:
+               /* Should never get called for isochronous transfers. */
+               DWC_ASSERT(1, "NACK interrupt for ISOC transfer\n");
+               break;
+       }
+
+handle_nak_done:
+       disable_hc_int(hc_regs, nak);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel ACK interrupt. This interrupt is enabled when
+ * performing the PING protocol in Slave mode, when errors occur during
+ * either Slave mode or DMA mode, and during Start Split transactions.
+ */
+static int32_t handle_hc_ack_intr(dwc_otg_hcd_t * hcd,
+                                 dwc_hc_t * hc,
+                                 dwc_otg_hc_regs_t * hc_regs,
+                                 dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "ACK Received--\n", hc->hc_num);
+
+       if (hc->do_split) {
+               /*
+                * Handle ACK on SSPLIT.
+                * ACK should not occur in CSPLIT.
+                */
+               if (!hc->ep_is_in && hc->data_pid_start != DWC_OTG_HC_PID_SETUP) {
+                       qtd->ssplit_out_xfer_count = hc->xfer_len;
+               }
+               if (!(hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in)) {
+                       /* Don't need complete for isochronous out transfers. */
+                       qtd->complete_split = 1;
+               }
+
+               /* ISOC OUT */
+               if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
+                       switch (hc->xact_pos) {
+                       case DWC_HCSPLIT_XACTPOS_ALL:
+                               break;
+                       case DWC_HCSPLIT_XACTPOS_END:
+                               qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+                               qtd->isoc_split_offset = 0;
+                               break;
+                       case DWC_HCSPLIT_XACTPOS_BEGIN:
+                       case DWC_HCSPLIT_XACTPOS_MID:
+                               /*
+                                * For BEGIN or MID, calculate the length for
+                                * the next microframe to determine the correct
+                                * SSPLIT token, either MID or END.
+                                */
+                               {
+                                       struct dwc_otg_hcd_iso_packet_desc
+                                       *frame_desc;
+
+                                       frame_desc =
+                                           &qtd->urb->
+                                           iso_descs[qtd->isoc_frame_index];
+                                       qtd->isoc_split_offset += 188;
+
+                                       if ((frame_desc->length -
+                                            qtd->isoc_split_offset) <= 188) {
+                                               qtd->isoc_split_pos =
+                                                   DWC_HCSPLIT_XACTPOS_END;
+                                       } else {
+                                               qtd->isoc_split_pos =
+                                                   DWC_HCSPLIT_XACTPOS_MID;
+                                       }
+
+                               }
+                               break;
+                       }
+               } else {
+                       halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
+               }
+       } else {
+               qtd->error_count = 0;
+
+               if (hc->qh->ping_state) {
+                       hc->qh->ping_state = 0;
+                       /*
+                        * Halt the channel so the transfer can be re-started
+                        * from the appropriate point. This only happens in
+                        * Slave mode. In DMA mode, the ping_state is cleared
+                        * when the transfer is started because the core
+                        * automatically executes the PING, then the transfer.
+                        */
+                       halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
+               }
+       }
+
+       /*
+        * If the ACK occurred when _not_ in the PING state, let the channel
+        * continue transferring data after clearing the error count.
+        */
+
+       disable_hc_int(hc_regs, ack);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel NYET interrupt. This interrupt should only occur on
+ * Bulk and Control OUT endpoints and for complete split transactions. If a
+ * NYET occurs at the same time as a Transfer Complete interrupt, it is
+ * handled in the xfercomp interrupt handler, not here. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nyet_intr(dwc_otg_hcd_t * hcd,
+                                  dwc_hc_t * hc,
+                                  dwc_otg_hc_regs_t * hc_regs,
+                                  dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "NYET Received--\n", hc->hc_num);
+
+       /*
+        * NYET on CSPLIT
+        * re-do the CSPLIT immediately on non-periodic
+        */
+       if (hc->do_split && hc->complete_split) {
+               if (hc->ep_is_in && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+                   && hcd->core_if->dma_enable) {
+                       qtd->complete_split = 0;
+                       qtd->isoc_split_offset = 0;
+                       if (++qtd->isoc_frame_index == qtd->urb->packet_count) {
+                               hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+                               release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);    
+                       }
+                       else
+                               release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);  
+                       goto handle_nyet_done;
+               }
+               
+               if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                   hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       int frnum = dwc_otg_hcd_get_frame_number(hcd);
+
+                       if (dwc_full_frame_num(frnum) !=
+                           dwc_full_frame_num(hc->qh->sched_frame)) {
+                               /*
+                                * No longer in the same full speed frame.
+                                * Treat this as a transaction error.
+                                */
+#if 0
+                               /** @todo Fix system performance so this can
+                                * be treated as an error. Right now complete
+                                * splits cannot be scheduled precisely enough
+                                * due to other system activity, so this error
+                                * occurs regularly in Slave mode.
+                                */
+                               qtd->error_count++;
+#endif
+                               qtd->complete_split = 0;
+                               halt_channel(hcd, hc, qtd,
+                                            DWC_OTG_HC_XFER_XACT_ERR);
+                               /** @todo add support for isoc release */
+                               goto handle_nyet_done;
+                       }
+               }
+
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
+               goto handle_nyet_done;
+       }
+
+       hc->qh->ping_state = 1;
+       qtd->error_count = 0;
+
+       update_urb_state_xfer_intr(hc, hc_regs, qtd->urb, qtd,
+                                  DWC_OTG_HC_XFER_NYET);
+       dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+
+       /*
+        * Halt the channel and re-start the transfer so the PING
+        * protocol will start.
+        */
+       halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
+
+handle_nyet_done:
+       disable_hc_int(hc_regs, nyet);
+       return 1;
+}
+
+/**
+ * Handles a host channel babble interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_babble_intr(dwc_otg_hcd_t * hcd,
+                                    dwc_hc_t * hc,
+                                    dwc_otg_hc_regs_t * hc_regs,
+                                    dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "Babble Error--\n", hc->hc_num);
+
+       if (hcd->core_if->dma_desc_enable) {
+               dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+                                              DWC_OTG_HC_XFER_BABBLE_ERR);
+               goto handle_babble_done;
+       }
+
+       if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+               hcd->fops->complete(hcd, qtd->urb->priv,
+                                   qtd->urb, -DWC_E_OVERFLOW);
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_BABBLE_ERR);
+       } else {
+               dwc_otg_halt_status_e halt_status;
+               halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+                                                   DWC_OTG_HC_XFER_BABBLE_ERR);
+               halt_channel(hcd, hc, qtd, halt_status);
+       }
+
+handle_babble_done:
+       disable_hc_int(hc_regs, bblerr);
+       return 1;
+}
+
+/**
+ * Handles a host channel AHB error interrupt. This handler is only called in
+ * DMA mode.
+ */
+static int32_t handle_hc_ahberr_intr(dwc_otg_hcd_t * hcd,
+                                    dwc_hc_t * hc,
+                                    dwc_otg_hc_regs_t * hc_regs,
+                                    dwc_otg_qtd_t * qtd)
+{
+       hcchar_data_t hcchar;
+       hcsplt_data_t hcsplt;
+       hctsiz_data_t hctsiz;
+       uint32_t hcdma;
+       char *pipetype, *speed;
+
+       dwc_otg_hcd_urb_t *urb = qtd->urb;
+
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "AHB Error--\n", hc->hc_num);
+
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+       hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+       hcdma = DWC_READ_REG32(&hc_regs->hcdma);
+
+       DWC_ERROR("AHB ERROR, Channel %d\n", hc->hc_num);
+       DWC_ERROR("  hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
+       DWC_ERROR("  hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Enqueue\n");
+       DWC_ERROR("  Device address: %d\n",
+                 dwc_otg_hcd_get_dev_addr(&urb->pipe_info));
+       DWC_ERROR("  Endpoint: %d, %s\n",
+                 dwc_otg_hcd_get_ep_num(&urb->pipe_info),
+                 (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? "IN" : "OUT"));
+
+       switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
+       case UE_CONTROL:
+               pipetype = "CONTROL";
+               break;
+       case UE_BULK:
+               pipetype = "BULK";
+               break;
+       case UE_INTERRUPT:
+               pipetype = "INTERRUPT";
+               break;
+       case UE_ISOCHRONOUS:
+               pipetype = "ISOCHRONOUS";
+               break;
+       default:
+               pipetype = "UNKNOWN";
+               break;
+       }
+
+       DWC_ERROR("  Endpoint type: %s\n", pipetype);
+
+       switch (hc->speed) {
+       case DWC_OTG_EP_SPEED_HIGH:
+               speed = "HIGH";
+               break;
+       case DWC_OTG_EP_SPEED_FULL:
+               speed = "FULL";
+               break;
+       case DWC_OTG_EP_SPEED_LOW:
+               speed = "LOW";
+               break;
+       default:
+               speed = "UNKNOWN";
+               break;
+       };
+
+       DWC_ERROR("  Speed: %s\n", speed);
+
+       DWC_ERROR("  Max packet size: %d\n",
+                 dwc_otg_hcd_get_mps(&urb->pipe_info));
+       DWC_ERROR("  Data buffer length: %d\n", urb->length);
+       DWC_ERROR("  Transfer buffer: %p, Transfer DMA: %p\n",
+                 urb->buf, (void *)urb->dma);
+       DWC_ERROR("  Setup buffer: %p, Setup DMA: %p\n",
+                 urb->setup_packet, (void *)urb->setup_dma);
+       DWC_ERROR("  Interval: %d\n", urb->interval);
+
+       /* Core haltes the channel for Descriptor DMA mode */
+       if (hcd->core_if->dma_desc_enable) {
+               dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+                                              DWC_OTG_HC_XFER_AHB_ERR);
+               goto handle_ahberr_done;
+       }
+
+       hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_IO);
+
+       /*
+        * Force a channel halt. Don't call halt_channel because that won't
+        * write to the HCCHARn register in DMA mode to force the halt.
+        */
+       dwc_otg_hc_halt(hcd->core_if, hc, DWC_OTG_HC_XFER_AHB_ERR);
+handle_ahberr_done:
+       disable_hc_int(hc_regs, ahberr);
+       return 1;
+}
+
+/**
+ * Handles a host channel transaction error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xacterr_intr(dwc_otg_hcd_t * hcd,
+                                     dwc_hc_t * hc,
+                                     dwc_otg_hc_regs_t * hc_regs,
+                                     dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "Transaction Error--\n", hc->hc_num);
+
+       if (hcd->core_if->dma_desc_enable) {
+               dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+                                              DWC_OTG_HC_XFER_XACT_ERR);
+               goto handle_xacterr_done;
+       }
+
+       switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+       case UE_CONTROL:
+       case UE_BULK:
+               qtd->error_count++;
+               if (!hc->qh->ping_state) {
+
+                       update_urb_state_xfer_intr(hc, hc_regs,
+                                                  qtd->urb, qtd,
+                                                  DWC_OTG_HC_XFER_XACT_ERR);
+                       dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+                       if (!hc->ep_is_in && hc->speed == DWC_OTG_EP_SPEED_HIGH) {
+                               hc->qh->ping_state = 1;
+                       }
+               }
+
+               /*
+                * Halt the channel so the transfer can be re-started from
+                * the appropriate point or the PING protocol will start.
+                */
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+               break;
+       case UE_INTERRUPT:
+               qtd->error_count++;
+               if (hc->do_split && hc->complete_split) {
+                       qtd->complete_split = 0;
+               }
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+               break;
+       case UE_ISOCHRONOUS:
+               {
+                       dwc_otg_halt_status_e halt_status;
+                       halt_status =
+                           update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+                                                 DWC_OTG_HC_XFER_XACT_ERR);
+
+                       halt_channel(hcd, hc, qtd, halt_status);
+               }
+               break;
+       }
+handle_xacterr_done:
+       disable_hc_int(hc_regs, xacterr);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel frame overrun interrupt. This handler may be called
+ * in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_frmovrun_intr(dwc_otg_hcd_t * hcd,
+                                      dwc_hc_t * hc,
+                                      dwc_otg_hc_regs_t * hc_regs,
+                                      dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "Frame Overrun--\n", hc->hc_num);
+
+       switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+       case UE_CONTROL:
+       case UE_BULK:
+               break;
+       case UE_INTERRUPT:
+               halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_FRAME_OVERRUN);
+               break;
+       case UE_ISOCHRONOUS:
+               {
+                       dwc_otg_halt_status_e halt_status;
+                       halt_status =
+                           update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+                                                 DWC_OTG_HC_XFER_FRAME_OVERRUN);
+
+                       halt_channel(hcd, hc, qtd, halt_status);
+               }
+               break;
+       }
+
+       disable_hc_int(hc_regs, frmovrun);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel data toggle error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t * hcd,
+                                        dwc_hc_t * hc,
+                                        dwc_otg_hc_regs_t * hc_regs,
+                                        dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "Data Toggle Error--\n", hc->hc_num);
+
+       if (hc->ep_is_in) {
+               qtd->error_count = 0;
+       } else {
+               DWC_ERROR("Data Toggle Error on OUT transfer,"
+                         "channel %d\n", hc->hc_num);
+       }
+
+       disable_hc_int(hc_regs, datatglerr);
+
+       return 1;
+}
+
+#ifdef DEBUG
+/**
+ * This function is for debug only. It checks that a valid halt status is set
+ * and that HCCHARn.chdis is clear. If there's a problem, corrective action is
+ * taken and a warning is issued.
+ * @return 1 if halt status is ok, 0 otherwise.
+ */
+static inline int halt_status_ok(dwc_otg_hcd_t * hcd,
+                                dwc_hc_t * hc,
+                                dwc_otg_hc_regs_t * hc_regs,
+                                dwc_otg_qtd_t * qtd)
+{
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       hcint_data_t hcint;
+       hcintmsk_data_t hcintmsk;
+       hcsplt_data_t hcsplt;
+
+       if (hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS) {
+               /*
+                * This code is here only as a check. This condition should
+                * never happen. Ignore the halt if it does occur.
+                */
+               hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+               hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+               hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+               hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
+               hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+               DWC_WARN
+                   ("%s: hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS, "
+                    "channel %d, hcchar 0x%08x, hctsiz 0x%08x, "
+                    "hcint 0x%08x, hcintmsk 0x%08x, "
+                    "hcsplt 0x%08x, qtd->complete_split %d\n", __func__,
+                    hc->hc_num, hcchar.d32, hctsiz.d32, hcint.d32,
+                    hcintmsk.d32, hcsplt.d32, qtd->complete_split);
+
+               DWC_WARN("%s: no halt status, channel %d, ignoring interrupt\n",
+                        __func__, hc->hc_num);
+               DWC_WARN("\n");
+               clear_hc_int(hc_regs, chhltd);
+               return 0;
+       }
+
+       /*
+        * This code is here only as a check. hcchar.chdis should
+        * never be set when the halt interrupt occurs. Halt the
+        * channel again if it does occur.
+        */
+       hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+       if (hcchar.b.chdis) {
+               DWC_WARN("%s: hcchar.chdis set unexpectedly, "
+                        "hcchar 0x%08x, trying to halt again\n",
+                        __func__, hcchar.d32);
+               clear_hc_int(hc_regs, chhltd);
+               hc->halt_pending = 0;
+               halt_channel(hcd, hc, qtd, hc->halt_status);
+               return 0;
+       }
+
+       return 1;
+}
+#endif
+
+/**
+ * Handles a host Channel Halted interrupt in DMA mode. This handler
+ * determines the reason the channel halted and proceeds accordingly.
+ */
+static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t * hcd,
+                                     dwc_hc_t * hc,
+                                     dwc_otg_hc_regs_t * hc_regs,
+                                     dwc_otg_qtd_t * qtd)
+{
+       hcint_data_t hcint;
+       hcintmsk_data_t hcintmsk;
+       int out_nak_enh = 0;
+
+       /* For core with OUT NAK enhancement, the flow for high-
+        * speed CONTROL/BULK OUT is handled a little differently.
+        */
+       if (hcd->core_if->snpsid >= OTG_CORE_REV_2_71a) {
+               if (hc->speed == DWC_OTG_EP_SPEED_HIGH && !hc->ep_is_in &&
+                   (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+                    hc->ep_type == DWC_OTG_EP_TYPE_BULK)) {
+                       out_nak_enh = 1;
+               }
+       }
+
+       if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+           (hc->halt_status == DWC_OTG_HC_XFER_AHB_ERR
+            && !hcd->core_if->dma_desc_enable)) {
+               /*
+                * Just release the channel. A dequeue can happen on a
+                * transfer timeout. In the case of an AHB Error, the channel
+                * was forced to halt because there's no way to gracefully
+                * recover.
+                */
+               if (hcd->core_if->dma_desc_enable)
+                       dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+                                                      hc->halt_status);
+               else
+                       release_channel(hcd, hc, qtd, hc->halt_status);
+               return;
+       }
+
+       /* Read the HCINTn register to determine the cause for the halt. */
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+       hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
+
+       if (hcint.b.xfercomp) {
+               /** @todo This is here because of a possible hardware bug.  Spec
+                * says that on SPLIT-ISOC OUT transfers in DMA mode that a HALT
+                * interrupt w/ACK bit set should occur, but I only see the
+                * XFERCOMP bit, even with it masked out.  This is a workaround
+                * for that behavior.  Should fix this when hardware is fixed.
+                */
+               if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
+                       handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
+               }
+               handle_hc_xfercomp_intr(hcd, hc, hc_regs, qtd);
+       } else if (hcint.b.stall) {
+               handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
+       } else if (hcint.b.xacterr && !hcd->core_if->dma_desc_enable) {
+               if (out_nak_enh) {
+                       if (hcint.b.nyet || hcint.b.nak || hcint.b.ack) {
+                               DWC_DEBUGPL(DBG_HCD, "XactErr with NYET/NAK/ACK\n");
+                               qtd->error_count = 0;
+                       } else {
+                               DWC_DEBUGPL(DBG_HCD, "XactErr without NYET/NAK/ACK\n");
+                       }
+               }
+
+               /*
+                * Must handle xacterr before nak or ack. Could get a xacterr
+                * at the same time as either of these on a BULK/CONTROL OUT
+                * that started with a PING. The xacterr takes precedence.
+                */
+               handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+       } else if (hcint.b.xcs_xact && hcd->core_if->dma_desc_enable) {
+               handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+       } else if (hcint.b.ahberr && hcd->core_if->dma_desc_enable) {
+               handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
+       } else if (hcint.b.bblerr) {
+               handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
+       } else if (hcint.b.frmovrun) {
+               handle_hc_frmovrun_intr(hcd, hc, hc_regs, qtd);
+       } else if (!out_nak_enh) {
+               if (hcint.b.nyet) {
+                       /*
+                        * Must handle nyet before nak or ack. Could get a nyet at the
+                        * same time as either of those on a BULK/CONTROL OUT that
+                        * started with a PING. The nyet takes precedence.
+                        */
+                       handle_hc_nyet_intr(hcd, hc, hc_regs, qtd);
+               } else if (hcint.b.nak && !hcintmsk.b.nak) {
+                       /*
+                        * If nak is not masked, it's because a non-split IN transfer
+                        * is in an error state. In that case, the nak is handled by
+                        * the nak interrupt handler, not here. Handle nak here for
+                        * BULK/CONTROL OUT transfers, which halt on a NAK to allow
+                        * rewinding the buffer pointer.
+                        */
+                       handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
+               } else if (hcint.b.ack && !hcintmsk.b.ack) {
+                       /*
+                        * If ack is not masked, it's because a non-split IN transfer
+                        * is in an error state. In that case, the ack is handled by
+                        * the ack interrupt handler, not here. Handle ack here for
+                        * split transfers. Start splits halt on ACK.
+                        */
+                       handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
+               } else {
+                       if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                           hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                               /*
+                                * A periodic transfer halted with no other channel
+                                * interrupts set. Assume it was halted by the core
+                                * because it could not be completed in its scheduled
+                                * (micro)frame.
+                                */
+#ifdef DEBUG
+                               DWC_PRINTF
+                                   ("%s: Halt channel %d (assume incomplete periodic transfer)\n",
+                                    __func__, hc->hc_num);
+#endif
+                               halt_channel(hcd, hc, qtd,
+                                            DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE);
+                       } else {
+                               DWC_ERROR
+                                   ("%s: Channel %d, DMA Mode -- ChHltd set, but reason "
+                                    "for halting is unknown, hcint 0x%08x, intsts 0x%08x\n",
+                                    __func__, hc->hc_num, hcint.d32,
+                                    DWC_READ_REG32(&hcd->
+                                                   core_if->core_global_regs->
+                                                   gintsts));
+                       }
+
+               }
+       } else {
+               DWC_PRINTF("NYET/NAK/ACK/other in non-error case, 0x%08x\n",
+                          hcint.d32);
+       }
+}
+
+/**
+ * Handles a host channel Channel Halted interrupt.
+ *
+ * In slave mode, this handler is called only when the driver specifically
+ * requests a halt. This occurs during handling other host channel interrupts
+ * (e.g. nak, xacterr, stall, nyet, etc.).
+ *
+ * In DMA mode, this is the interrupt that occurs when the core has finished
+ * processing a transfer on a channel. Other host channel interrupts (except
+ * ahberr) are disabled in DMA mode.
+ */
+static int32_t handle_hc_chhltd_intr(dwc_otg_hcd_t * hcd,
+                                    dwc_hc_t * hc,
+                                    dwc_otg_hc_regs_t * hc_regs,
+                                    dwc_otg_qtd_t * qtd)
+{
+       DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+                   "Channel Halted--\n", hc->hc_num);
+
+       if (hcd->core_if->dma_enable) {
+               handle_hc_chhltd_intr_dma(hcd, hc, hc_regs, qtd);
+       } else {
+#ifdef DEBUG
+               if (!halt_status_ok(hcd, hc, hc_regs, qtd)) {
+                       return 1;
+               }
+#endif
+               release_channel(hcd, hc, qtd, hc->halt_status);
+       }
+
+       return 1;
+}
+
+/** Handles interrupt for a specific Host Channel */
+int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * dwc_otg_hcd, uint32_t num)
+{
+       int retval = 0;
+       hcint_data_t hcint;
+       hcintmsk_data_t hcintmsk;
+       dwc_hc_t *hc;
+       dwc_otg_hc_regs_t *hc_regs;
+       dwc_otg_qtd_t *qtd;
+
+       DWC_DEBUGPL(DBG_HCDV, "--Host Channel Interrupt--, Channel %d\n", num);
+
+       hc = dwc_otg_hcd->hc_ptr_array[num];
+       hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[num];
+       qtd = DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list);
+
+       hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+       hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
+       DWC_DEBUGPL(DBG_HCDV,
+                   "  hcint 0x%08x, hcintmsk 0x%08x, hcint&hcintmsk 0x%08x\n",
+                   hcint.d32, hcintmsk.d32, (hcint.d32 & hcintmsk.d32));
+       hcint.d32 = hcint.d32 & hcintmsk.d32;
+
+       if (!dwc_otg_hcd->core_if->dma_enable) {
+               if (hcint.b.chhltd && hcint.d32 != 0x2) {
+                       hcint.b.chhltd = 0;
+               }
+       }
+
+       if (hcint.b.xfercomp) {
+               retval |=
+                   handle_hc_xfercomp_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+               /*
+                * If NYET occurred at same time as Xfer Complete, the NYET is
+                * handled by the Xfer Complete interrupt handler. Don't want
+                * to call the NYET interrupt handler in this case.
+                */
+               hcint.b.nyet = 0;
+       }
+       if (hcint.b.chhltd) {
+               retval |= handle_hc_chhltd_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.ahberr) {
+               retval |= handle_hc_ahberr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.stall) {
+               retval |= handle_hc_stall_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.nak) {
+               retval |= handle_hc_nak_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.ack) {
+               retval |= handle_hc_ack_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.nyet) {
+               retval |= handle_hc_nyet_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.xacterr) {
+               retval |= handle_hc_xacterr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.bblerr) {
+               retval |= handle_hc_babble_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.frmovrun) {
+               retval |=
+                   handle_hc_frmovrun_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.datatglerr) {
+               retval |=
+                   handle_hc_datatglerr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+
+       return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
new file mode 100644
index 0000000..4a985a6
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
@@ -0,0 +1,893 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_linux.c $
+ * $Revision: #20 $
+ * $Date: 2011/10/26 $
+ * $Change: 1872981 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the implementation of the HCD. In Linux, the HCD
+ * implements the hc_driver API.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+#include <linux/version.h>
+#include <asm/io.h>
+#include <linux/usb.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
+#include <../drivers/usb/core/hcd.h>
+#else
+#include <linux/usb/hcd.h>
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30))
+#define USB_URB_EP_LINKING 1
+#else
+#define USB_URB_EP_LINKING 0
+#endif
+
+#include "dwc_otg_hcd_if.h"
+#include "dwc_otg_dbg.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+/**
+ * Gets the endpoint number from a _bEndpointAddress argument. The endpoint is
+ * qualified with its direction (possible 32 endpoints per device).
+ */
+#define dwc_ep_addr_to_endpoint(_bEndpointAddress_) ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \
+                                                    ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4)
+
+static const char dwc_otg_hcd_name[] = "dwc_otg_hcd";
+
+/** @name Linux HC Driver API Functions */
+/** @{ */
+/* manage i/o requests, device state */
+static int dwc_otg_urb_enqueue(struct usb_hcd *hcd,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+                      struct usb_host_endpoint *ep,
+#endif
+                      struct urb *urb, gfp_t mem_flags);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb);
+#endif
+#else /* kernels at or post 2.6.30 */
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd,
+                               struct urb *urb, int status);
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30) */
+
+static void endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+static void endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
+#endif
+static irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd);
+extern int hcd_start(struct usb_hcd *hcd);
+extern void hcd_stop(struct usb_hcd *hcd);
+static int get_frame_number(struct usb_hcd *hcd);
+extern int hub_status_data(struct usb_hcd *hcd, char *buf);
+extern int hub_control(struct usb_hcd *hcd,
+                      u16 typeReq,
+                      u16 wValue, u16 wIndex, char *buf, u16 wLength);
+
+struct wrapper_priv_data {
+       dwc_otg_hcd_t *dwc_otg_hcd;
+};
+
+/** @} */
+
+static struct hc_driver dwc_otg_hc_driver = {
+
+       .description = dwc_otg_hcd_name,
+       .product_desc = "DWC OTG Controller",
+       .hcd_priv_size = sizeof(struct wrapper_priv_data),
+
+       .irq = dwc_otg_hcd_irq,
+
+       .flags = HCD_MEMORY | HCD_USB2,
+
+       //.reset =              
+       .start = hcd_start,
+       //.suspend =            
+       //.resume =             
+       .stop = hcd_stop,
+
+       .urb_enqueue = dwc_otg_urb_enqueue,
+       .urb_dequeue = dwc_otg_urb_dequeue,
+       .endpoint_disable = endpoint_disable,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+       .endpoint_reset = endpoint_reset,
+#endif
+       .get_frame_number = get_frame_number,
+
+       .hub_status_data = hub_status_data,
+       .hub_control = hub_control,
+       //.bus_suspend =                
+       //.bus_resume =         
+};
+
+/** Gets the dwc_otg_hcd from a struct usb_hcd */
+static inline dwc_otg_hcd_t *hcd_to_dwc_otg_hcd(struct usb_hcd *hcd)
+{
+       struct wrapper_priv_data *p;
+       p = (struct wrapper_priv_data *)(hcd->hcd_priv);
+       return p->dwc_otg_hcd;
+}
+
+/** Gets the struct usb_hcd that contains a dwc_otg_hcd_t. */
+static inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+       return dwc_otg_hcd_get_priv_data(dwc_otg_hcd);
+}
+
+/** Gets the usb_host_endpoint associated with an URB. */
+inline struct usb_host_endpoint *dwc_urb_to_endpoint(struct urb *urb)
+{
+       struct usb_device *dev = urb->dev;
+       int ep_num = usb_pipeendpoint(urb->pipe);
+
+       if (usb_pipein(urb->pipe))
+               return dev->ep_in[ep_num];
+       else
+               return dev->ep_out[ep_num];
+}
+
+static int _disconnect(dwc_otg_hcd_t * hcd)
+{
+       struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
+
+       usb_hcd->self.is_b_host = 0;
+       return 0;
+}
+
+static int _start(dwc_otg_hcd_t * hcd)
+{
+       struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
+
+       usb_hcd->self.is_b_host = dwc_otg_hcd_is_b_host(hcd);
+       hcd_start(usb_hcd);
+
+       return 0;
+}
+
+static int _hub_info(dwc_otg_hcd_t * hcd, void *urb_handle, uint32_t * hub_addr,
+                    uint32_t * port_addr)
+{
+   struct urb *urb = (struct urb *)urb_handle;
+   struct usb_bus *bus;
+#if 1 //GRAYG - temporary
+   if (NULL == urb_handle)
+      DWC_ERROR("**** %s - NULL URB handle\n", __func__);//GRAYG
+   if (NULL == urb->dev)
+      DWC_ERROR("**** %s - URB has no device\n", __func__);//GRAYG
+   if (NULL == port_addr)
+      DWC_ERROR("**** %s - NULL port_address\n", __func__);//GRAYG
+#endif
+   if (urb->dev->tt) {
+        if (NULL == urb->dev->tt->hub) {
+                DWC_ERROR("**** %s - (URB's transactor has no TT - giving no hub)\n",
+                           __func__); //GRAYG
+                //*hub_addr = (u8)usb_pipedevice(urb->pipe); //GRAYG
+                *hub_addr = 0; //GRAYG
+                // we probably shouldn't have a transaction translator if
+                // there's no associated hub?
+        } else {
+               bus = hcd_to_bus(dwc_otg_hcd_to_hcd(hcd));
+               if (urb->dev->tt->hub == bus->root_hub)
+                       *hub_addr = 0;
+               else
+                       *hub_addr = urb->dev->tt->hub->devnum;
+       }
+       *port_addr = urb->dev->tt->multi ? urb->dev->ttport : 1;
+   } else {
+        *hub_addr = 0;
+       *port_addr = urb->dev->ttport;
+   }
+   return 0;
+}
+
+static int _speed(dwc_otg_hcd_t * hcd, void *urb_handle)
+{
+       struct urb *urb = (struct urb *)urb_handle;
+       return urb->dev->speed;
+}
+
+static int _get_b_hnp_enable(dwc_otg_hcd_t * hcd)
+{
+       struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
+       return usb_hcd->self.b_hnp_enable;
+}
+
+static void allocate_bus_bandwidth(struct usb_hcd *hcd, uint32_t bw,
+                                  struct urb *urb)
+{
+       hcd_to_bus(hcd)->bandwidth_allocated += bw / urb->interval;
+       if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+               hcd_to_bus(hcd)->bandwidth_isoc_reqs++;
+       } else {
+               hcd_to_bus(hcd)->bandwidth_int_reqs++;
+       }
+}
+
+static void free_bus_bandwidth(struct usb_hcd *hcd, uint32_t bw,
+                              struct urb *urb)
+{
+       hcd_to_bus(hcd)->bandwidth_allocated -= bw / urb->interval;
+       if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+               hcd_to_bus(hcd)->bandwidth_isoc_reqs--;
+       } else {
+               hcd_to_bus(hcd)->bandwidth_int_reqs--;
+       }
+}
+
+/**
+ * Sets the final status of an URB and returns it to the device driver. Any
+ * required cleanup of the URB is performed.
+ */
+static int _complete(dwc_otg_hcd_t * hcd, void *urb_handle,
+                    dwc_otg_hcd_urb_t * dwc_otg_urb, int32_t status)
+{
+       struct urb *urb = (struct urb *)urb_handle;
+
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               DWC_PRINTF("%s: urb %p, device %d, ep %d %s, status=%d\n",
+                          __func__, urb, usb_pipedevice(urb->pipe),
+                          usb_pipeendpoint(urb->pipe),
+                          usb_pipein(urb->pipe) ? "IN" : "OUT", status);
+               if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+                       int i;
+                       for (i = 0; i < urb->number_of_packets; i++) {
+                               DWC_PRINTF("  ISO Desc %d status: %d\n",
+                                          i, urb->iso_frame_desc[i].status);
+                       }
+               }
+       }
+
+       urb->actual_length = dwc_otg_hcd_urb_get_actual_length(dwc_otg_urb);
+       /* Convert status value. */
+       switch (status) {
+       case -DWC_E_PROTOCOL:
+               status = -EPROTO;
+               break;
+       case -DWC_E_IN_PROGRESS:
+               status = -EINPROGRESS;
+               break;
+       case -DWC_E_PIPE:
+               status = -EPIPE;
+               break;
+       case -DWC_E_IO:
+               status = -EIO;
+               break;
+       case -DWC_E_TIMEOUT:
+               status = -ETIMEDOUT;
+               break;
+       case -DWC_E_OVERFLOW:
+               status = -EOVERFLOW;
+               break;
+       default:
+               if (status) {
+                       DWC_PRINTF("Uknown urb status %d\n", status);
+
+               }
+       }
+
+       if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+               int i;
+
+               urb->error_count = dwc_otg_hcd_urb_get_error_count(dwc_otg_urb);
+               for (i = 0; i < urb->number_of_packets; ++i) {
+                       urb->iso_frame_desc[i].actual_length =
+                           dwc_otg_hcd_urb_get_iso_desc_actual_length
+                           (dwc_otg_urb, i);
+                       urb->iso_frame_desc[i].status =
+                           dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_urb, i);
+               }
+       }
+
+       urb->status = status;
+       urb->hcpriv = NULL;
+       if (!status) {
+               if ((urb->transfer_flags & URB_SHORT_NOT_OK) &&
+                   (urb->actual_length < urb->transfer_buffer_length)) {
+                       urb->status = -EREMOTEIO;
+               }
+       }
+
+       if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) ||
+           (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
+               struct usb_host_endpoint *ep = dwc_urb_to_endpoint(urb);
+               if (ep) {
+                       free_bus_bandwidth(dwc_otg_hcd_to_hcd(hcd),
+                                          dwc_otg_hcd_get_ep_bandwidth(hcd,
+                                                                       ep->hcpriv),
+                                          urb);
+               }
+       }
+
+       DWC_FREE(dwc_otg_urb);
+
+#if USB_URB_EP_LINKING
+        usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(hcd), urb);
+#endif
+       DWC_SPINUNLOCK(hcd->lock);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+       usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb);
+#else
+       usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb, status);
+#endif
+       DWC_SPINLOCK(hcd->lock);
+
+       return 0;
+}
+
+static struct dwc_otg_hcd_function_ops hcd_fops = {
+       .start = _start,
+       .disconnect = _disconnect,
+       .hub_info = _hub_info,
+       .speed = _speed,
+       .complete = _complete,
+       .get_b_hnp_enable = _get_b_hnp_enable,
+};
+
+/**
+ * Initializes the HCD. This function allocates memory for and initializes the
+ * static parts of the usb_hcd and dwc_otg_hcd structures. It also registers the
+ * USB bus with the core and calls the hc_driver->start() function. It returns
+ * a negative error on failure.
+ */
+int hcd_init(dwc_bus_dev_t *_dev)
+{
+       struct usb_hcd *hcd = NULL;
+       dwc_otg_hcd_t *dwc_otg_hcd = NULL;
+       dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+       int retval = 0;
+        u64 dmamask;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD INIT otg_dev=%p\n", otg_dev);
+
+       /* Set device flags indicating whether the HCD supports DMA. */
+       if (dwc_otg_is_dma_enable(otg_dev->core_if))
+                dmamask = DMA_BIT_MASK(32);
+        else
+                dmamask = 0;
+              
+#if    defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
+        dma_set_mask(&_dev->dev, dmamask);
+        dma_set_coherent_mask(&_dev->dev, dmamask);
+#elif  defined(PCI_INTERFACE)
+        pci_set_dma_mask(_dev, dmamask);
+        pci_set_consistent_dma_mask(_dev, dmamask);
+#endif
+
+       /*
+        * Allocate memory for the base HCD plus the DWC OTG HCD.
+        * Initialize the base HCD.
+        */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+       hcd = usb_create_hcd(&dwc_otg_hc_driver, &_dev->dev, _dev->dev.bus_id);
+#else
+       hcd = usb_create_hcd(&dwc_otg_hc_driver, &_dev->dev, dev_name(&_dev->dev));
+       hcd->has_tt = 1;
+//      hcd->uses_new_polling = 1;
+//      hcd->poll_rh = 0;
+#endif
+       if (!hcd) {
+               retval = -ENOMEM;
+               goto error1;
+       }
+
+       hcd->regs = otg_dev->os_dep.base;
+
+       /* Initialize the DWC OTG HCD. */
+       dwc_otg_hcd = dwc_otg_hcd_alloc_hcd();
+       if (!dwc_otg_hcd) {
+               goto error2;
+       }
+       ((struct wrapper_priv_data *)(hcd->hcd_priv))->dwc_otg_hcd =
+           dwc_otg_hcd;
+       otg_dev->hcd = dwc_otg_hcd;
+
+       if (dwc_otg_hcd_init(dwc_otg_hcd, otg_dev->core_if)) {
+               goto error2;
+       }
+
+       otg_dev->hcd->otg_dev = otg_dev;
+       hcd->self.otg_port = dwc_otg_hcd_otg_port(dwc_otg_hcd);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33) //don't support for LM(with 2.6.20.1 kernel)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35) //version field absent later
+       hcd->self.otg_version = dwc_otg_get_otg_version(otg_dev->core_if);
+#endif
+       /* Don't support SG list at this point */
+       hcd->self.sg_tablesize = 0;
+#endif
+       /*
+        * Finish generic HCD initialization and start the HCD. This function
+        * allocates the DMA buffer pool, registers the USB bus, requests the
+        * IRQ line, and calls hcd_start method.
+        */
+#ifdef PLATFORM_INTERFACE
+        retval = usb_add_hcd(hcd, platform_get_irq(_dev, 0), IRQF_SHARED | IRQF_DISABLED);
+#else
+        retval = usb_add_hcd(hcd, _dev->irq, IRQF_SHARED | IRQF_DISABLED);     
+#endif
+       if (retval < 0) {
+               goto error2;
+       }
+
+       dwc_otg_hcd_set_priv_data(dwc_otg_hcd, hcd);
+       return 0;
+
+error2:
+       usb_put_hcd(hcd);
+error1:
+       return retval;
+}
+
+/**
+ * Removes the HCD.
+ * Frees memory and resources associated with the HCD and deregisters the bus.
+ */
+void hcd_remove(dwc_bus_dev_t *_dev)
+{
+       dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+       dwc_otg_hcd_t *dwc_otg_hcd;
+       struct usb_hcd *hcd;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD REMOVE otg_dev=%p\n", otg_dev);
+
+       if (!otg_dev) {
+               DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
+               return;
+       }
+
+       dwc_otg_hcd = otg_dev->hcd;
+
+       if (!dwc_otg_hcd) {
+               DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
+               return;
+       }
+
+       hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd);
+
+       if (!hcd) {
+               DWC_DEBUGPL(DBG_ANY,
+                           "%s: dwc_otg_hcd_to_hcd(dwc_otg_hcd) NULL!\n",
+                           __func__);
+               return;
+       }
+       usb_remove_hcd(hcd);
+       dwc_otg_hcd_set_priv_data(dwc_otg_hcd, NULL);
+       dwc_otg_hcd_remove(dwc_otg_hcd);
+       usb_put_hcd(hcd);
+}
+
+/* =========================================================================
+ *  Linux HC Driver Functions
+ * ========================================================================= */
+
+/** Initializes the DWC_otg controller and its root hub and prepares it for host
+ * mode operation. Activates the root port. Returns 0 on success and a negative
+ * error code on failure. */
+int hcd_start(struct usb_hcd *hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+       struct usb_bus *bus;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD START\n");
+       bus = hcd_to_bus(hcd);
+
+       hcd->state = HC_STATE_RUNNING;
+       if (dwc_otg_hcd_start(dwc_otg_hcd, &hcd_fops)) {
+               return 0;
+       }
+
+       /* Initialize and connect root hub if one is not already attached */
+       if (bus->root_hub) {
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Has Root Hub\n");
+               /* Inform the HUB driver to resume. */
+               usb_hcd_resume_root_hub(hcd);
+       }
+
+       return 0;
+}
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ */
+void hcd_stop(struct usb_hcd *hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+       dwc_otg_hcd_stop(dwc_otg_hcd);
+}
+
+/** Returns the current frame number. */
+static int get_frame_number(struct usb_hcd *hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+       return dwc_otg_hcd_get_frame_number(dwc_otg_hcd);
+}
+
+#ifdef DEBUG
+static void dump_urb_info(struct urb *urb, char *fn_name)
+{
+       DWC_PRINTF("%s, urb %p\n", fn_name, urb);
+       DWC_PRINTF("  Device address: %d\n", usb_pipedevice(urb->pipe));
+       DWC_PRINTF("  Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe),
+                  (usb_pipein(urb->pipe) ? "IN" : "OUT"));
+       DWC_PRINTF("  Endpoint type: %s\n", ( {
+                                            char *pipetype;
+                                            switch (usb_pipetype(urb->pipe)) {
+case PIPE_CONTROL:
+pipetype = "CONTROL"; break; case PIPE_BULK:
+pipetype = "BULK"; break; case PIPE_INTERRUPT:
+pipetype = "INTERRUPT"; break; case PIPE_ISOCHRONOUS:
+pipetype = "ISOCHRONOUS"; break; default:
+                                            pipetype = "UNKNOWN"; break;};
+                                            pipetype;}
+                  )) ;
+       DWC_PRINTF("  Speed: %s\n", ( {
+                                    char *speed; switch (urb->dev->speed) {
+case USB_SPEED_HIGH:
+speed = "HIGH"; break; case USB_SPEED_FULL:
+speed = "FULL"; break; case USB_SPEED_LOW:
+speed = "LOW"; break; default:
+                                    speed = "UNKNOWN"; break;};
+                                    speed;}
+                  )) ;
+       DWC_PRINTF("  Max packet size: %d\n",
+                  usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+       DWC_PRINTF("  Data buffer length: %d\n", urb->transfer_buffer_length);
+       DWC_PRINTF("  Transfer buffer: %p, Transfer DMA: %p\n",
+                  urb->transfer_buffer, (void *)urb->transfer_dma);
+       DWC_PRINTF("  Setup buffer: %p, Setup DMA: %p\n",
+                  urb->setup_packet, (void *)urb->setup_dma);
+       DWC_PRINTF("  Interval: %d\n", urb->interval);
+       if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+               int i;
+               for (i = 0; i < urb->number_of_packets; i++) {
+                       DWC_PRINTF("  ISO Desc %d:\n", i);
+                       DWC_PRINTF("    offset: %d, length %d\n",
+                                  urb->iso_frame_desc[i].offset,
+                                  urb->iso_frame_desc[i].length);
+               }
+       }
+}
+#endif
+
+/** Starts processing a USB transfer request specified by a USB Request Block
+ * (URB). mem_flags indicates the type of memory allocation to use while
+ * processing this URB. */
+static int dwc_otg_urb_enqueue(struct usb_hcd *hcd,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+                      struct usb_host_endpoint *ep,
+#endif
+                      struct urb *urb, gfp_t mem_flags)
+{
+       int retval = 0;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+       struct usb_host_endpoint *ep = urb->ep;
+#endif
+#if USB_URB_EP_LINKING
+       dwc_irqflags_t irqflags;
+#endif
+        void **ref_ep_hcpriv = &ep->hcpriv;
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+       dwc_otg_hcd_urb_t *dwc_otg_urb;
+       int i;
+       int alloc_bandwidth = 0;
+       uint8_t ep_type = 0;
+       uint32_t flags = 0;
+       void *buf;
+
+#ifdef DEBUG
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               dump_urb_info(urb, "dwc_otg_urb_enqueue");
+       }
+#endif
+
+       if (!urb->transfer_buffer && urb->transfer_buffer_length)
+               return -EINVAL;
+
+       if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
+           || (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
+               if (!dwc_otg_hcd_is_bandwidth_allocated
+                   (dwc_otg_hcd, ref_ep_hcpriv)) {
+                       alloc_bandwidth = 1;
+               }
+       }
+
+       switch (usb_pipetype(urb->pipe)) {
+       case PIPE_CONTROL:
+               ep_type = USB_ENDPOINT_XFER_CONTROL;
+               break;
+       case PIPE_ISOCHRONOUS:
+               ep_type = USB_ENDPOINT_XFER_ISOC;
+               break;
+       case PIPE_BULK:
+               ep_type = USB_ENDPOINT_XFER_BULK;
+               break;
+       case PIPE_INTERRUPT:
+               ep_type = USB_ENDPOINT_XFER_INT;
+               break;
+       default:
+                DWC_WARN("Wrong EP type - %d\n", usb_pipetype(urb->pipe));
+       }
+
+        /* # of packets is often 0 - do we really need to call this then? */
+       dwc_otg_urb = dwc_otg_hcd_urb_alloc(dwc_otg_hcd,
+                                           urb->number_of_packets,
+                                           mem_flags == GFP_ATOMIC ? 1 : 0);
+
+       if(dwc_otg_urb == NULL)
+               return -ENOMEM;
+
+        urb->hcpriv = dwc_otg_urb;
+        if (!dwc_otg_urb && urb->number_of_packets)
+                return -ENOMEM;
+        
+       dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_urb, usb_pipedevice(urb->pipe),
+                                    usb_pipeendpoint(urb->pipe), ep_type,
+                                    usb_pipein(urb->pipe),
+                                    usb_maxpacket(urb->dev, urb->pipe,
+                                                  !(usb_pipein(urb->pipe))));
+
+       buf = urb->transfer_buffer;
+       if (hcd->self.uses_dma) {
+               /*
+                * Calculate virtual address from physical address,
+                * because some class driver may not fill transfer_buffer.
+                * In Buffer DMA mode virual address is used,
+                * when handling non DWORD aligned buffers.
+                */
+               //buf = phys_to_virt(urb->transfer_dma);
+                // DMA addresses are bus addresses not physical addresses!
+                buf = dma_to_virt(&urb->dev->dev, urb->transfer_dma);
+       }
+
+       if (!(urb->transfer_flags & URB_NO_INTERRUPT))
+               flags |= URB_GIVEBACK_ASAP;
+       if (urb->transfer_flags & URB_ZERO_PACKET)
+               flags |= URB_SEND_ZERO_PACKET;
+
+       dwc_otg_hcd_urb_set_params(dwc_otg_urb, urb, buf,
+                                  urb->transfer_dma,
+                                  urb->transfer_buffer_length,
+                                  urb->setup_packet,
+                                  urb->setup_dma, flags, urb->interval);
+
+       for (i = 0; i < urb->number_of_packets; ++i) {
+               dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_urb, i,
+                                                   urb->
+                                                   iso_frame_desc[i].offset,
+                                                   urb->
+                                                   iso_frame_desc[i].length);
+       }
+
+#if USB_URB_EP_LINKING
+        DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &irqflags);
+       retval = usb_hcd_link_urb_to_ep(hcd, urb);
+        DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, irqflags);
+       if (0 == retval) 
+#endif
+        {
+                retval = dwc_otg_hcd_urb_enqueue(dwc_otg_hcd, dwc_otg_urb,
+                                                 /*(dwc_otg_qh_t **)*/
+                                                 ref_ep_hcpriv, 
+                                                 mem_flags == GFP_ATOMIC ? 1 : 0);
+                if (0 == retval) {
+                        if (alloc_bandwidth) {
+                                allocate_bus_bandwidth(hcd,
+                                        dwc_otg_hcd_get_ep_bandwidth(
+                                                dwc_otg_hcd, *ref_ep_hcpriv),
+                                                       urb);
+                        }
+                } else {
+#if USB_URB_EP_LINKING
+                       dwc_irqflags_t irqflags;
+                        DWC_DEBUGPL(DBG_HCD, "DWC OTG dwc_otg_hcd_urb_enqueue failed rc %d\n", retval);
+                        DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &irqflags);
+                        usb_hcd_unlink_urb_from_ep(hcd, urb);
+                        DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, irqflags);
+#endif
+                        if (retval == -DWC_E_NO_DEVICE) {
+                                retval = -ENODEV;
+                        }
+                }
+        }
+       return retval;
+}
+
+/** Aborts/cancels a USB transfer request. Always returns 0 to indicate
+ * success.  */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+#else
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+#endif
+{
+       dwc_irqflags_t flags;
+       dwc_otg_hcd_t *dwc_otg_hcd;
+        int rc;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue\n");
+
+       dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+#ifdef DEBUG
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               dump_urb_info(urb, "dwc_otg_urb_dequeue");
+       }
+#endif
+
+       DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+       rc = usb_hcd_check_unlink_urb(hcd, urb, status);
+       if (0 == rc) {
+               if(urb->hcpriv != NULL) {
+                       dwc_otg_hcd_urb_dequeue(dwc_otg_hcd,
+                                           (dwc_otg_hcd_urb_t *)urb->hcpriv);
+
+                       DWC_FREE(urb->hcpriv);
+                       urb->hcpriv = NULL;
+               }
+        }
+
+        if (0 == rc) {
+               /* Higher layer software sets URB status. */
+#if USB_URB_EP_LINKING
+                usb_hcd_unlink_urb_from_ep(hcd, urb);
+#endif
+               DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+                usb_hcd_giveback_urb(hcd, urb);
+#else
+                usb_hcd_giveback_urb(hcd, urb, status);
+#endif
+                if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+                        DWC_PRINTF("Called usb_hcd_giveback_urb() \n");
+                        DWC_PRINTF("  1urb->status = %d\n", urb->status);
+                }
+                DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue OK\n");
+        } else {
+               DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+                DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue failed - rc %d\n",
+                            rc);
+        }
+           
+       return rc;
+}
+
+/* Frees resources in the DWC_otg controller related to a given endpoint. Also
+ * clears state in the HCD related to the endpoint. Any URBs for the endpoint
+ * must already be dequeued. */
+static void endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+       DWC_DEBUGPL(DBG_HCD,
+                   "DWC OTG HCD EP DISABLE: _bEndpointAddress=0x%02x, "
+                   "endpoint=%d\n", ep->desc.bEndpointAddress,
+                   dwc_ep_addr_to_endpoint(ep->desc.bEndpointAddress));
+       dwc_otg_hcd_endpoint_disable(dwc_otg_hcd, ep->hcpriv, 250);
+       ep->hcpriv = NULL;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+/* Resets endpoint specific parameter values, in current version used to reset 
+ * the data toggle(as a WA). This function can be called from usb_clear_halt routine */
+static void endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+{
+       dwc_irqflags_t flags;
+       struct usb_device *udev = NULL;
+       int epnum = usb_endpoint_num(&ep->desc);
+       int is_out = usb_endpoint_dir_out(&ep->desc);
+       int is_control = usb_endpoint_xfer_control(&ep->desc);
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+        struct device *dev = DWC_OTG_OS_GETDEV(dwc_otg_hcd->otg_dev->os_dep);
+
+       if (dev)
+               udev = to_usb_device(dev);
+       else
+               return;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP RESET: Endpoint Num=0x%02d\n", epnum);
+
+       DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+       usb_settoggle(udev, epnum, is_out, 0);
+       if (is_control)
+               usb_settoggle(udev, epnum, !is_out, 0);
+
+       if (ep->hcpriv) {
+               dwc_otg_hcd_endpoint_reset(dwc_otg_hcd, ep->hcpriv);
+       }
+       DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+}
+#endif
+
+/** Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if
+ * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid
+ * interrupt.
+ *
+ * This function is called by the USB core when an interrupt occurs */
+static irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+       int32_t retval = dwc_otg_hcd_handle_intr(dwc_otg_hcd);
+       if (retval != 0) {
+               S3C2410X_CLEAR_EINTPEND();
+       }
+       return IRQ_RETVAL(retval);
+}
+
+/** Creates Status Change bitmap for the root hub and root port. The bitmap is
+ * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1
+ * is the status change indicator for the single root port. Returns 1 if either
+ * change indicator is 1, otherwise returns 0. */
+int hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+       buf[0] = 0;
+       buf[0] |= (dwc_otg_hcd_is_status_changed(dwc_otg_hcd, 1)) << 1;
+
+       return (buf[0] != 0);
+}
+
+/** Handles hub class-specific requests. */
+int hub_control(struct usb_hcd *hcd,
+               u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength)
+{
+       int retval;
+
+       retval = dwc_otg_hcd_hub_control(hcd_to_dwc_otg_hcd(hcd),
+                                        typeReq, wValue, wIndex, buf, wLength);
+
+       switch (retval) {
+       case -DWC_E_INVALID:
+               retval = -EINVAL;
+               break;
+       }
+
+       return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
new file mode 100644
index 0000000..08c1669
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
@@ -0,0 +1,922 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_queue.c $
+ * $Revision: #44 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the functions to manage Queue Heads and Queue
+ * Transfer Descriptors.
+ */
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+extern bool microframe_schedule;
+
+/** 
+ * Free each QTD in the QH's QTD-list then free the QH.  QH should already be
+ * removed from a list.  QTD list should already be empty if called from URB
+ * Dequeue.
+ *
+ * @param hcd HCD instance.
+ * @param qh The QH to free.
+ */
+void dwc_otg_hcd_qh_free(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       dwc_otg_qtd_t *qtd, *qtd_tmp;
+
+       /* Free each QTD in the QTD list */
+       DWC_SPINLOCK(hcd->lock);
+       DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {
+               DWC_CIRCLEQ_REMOVE(&qh->qtd_list, qtd, qtd_list_entry);
+               dwc_otg_hcd_qtd_free(qtd);
+       }
+
+       if (hcd->core_if->dma_desc_enable) {
+               dwc_otg_hcd_qh_free_ddma(hcd, qh);
+       } else if (qh->dw_align_buf) {
+               uint32_t buf_size;
+               if (qh->ep_type == UE_ISOCHRONOUS) {
+                       buf_size = 4096;
+               } else {
+                       buf_size = hcd->core_if->core_params->max_transfer_size;
+               }
+               DWC_DMA_FREE(buf_size, qh->dw_align_buf, qh->dw_align_buf_dma);
+       }
+
+       DWC_FREE(qh);
+       DWC_SPINUNLOCK(hcd->lock);
+       return;
+}
+
+#define BitStuffTime(bytecount)  ((8 * 7* bytecount) / 6)
+#define HS_HOST_DELAY          5       /* nanoseconds */
+#define FS_LS_HOST_DELAY       1000    /* nanoseconds */
+#define HUB_LS_SETUP           333     /* nanoseconds */
+#define NS_TO_US(ns)           ((ns + 500) / 1000)
+                               /* convert & round nanoseconds to microseconds */
+
+static uint32_t calc_bus_time(int speed, int is_in, int is_isoc, int bytecount)
+{
+       unsigned long retval;
+
+       switch (speed) {
+       case USB_SPEED_HIGH:
+               if (is_isoc) {
+                       retval =
+                           ((38 * 8 * 2083) +
+                            (2083 * (3 + BitStuffTime(bytecount)))) / 1000 +
+                           HS_HOST_DELAY;
+               } else {
+                       retval =
+                           ((55 * 8 * 2083) +
+                            (2083 * (3 + BitStuffTime(bytecount)))) / 1000 +
+                           HS_HOST_DELAY;
+               }
+               break;
+       case USB_SPEED_FULL:
+               if (is_isoc) {
+                       retval =
+                           (8354 * (31 + 10 * BitStuffTime(bytecount))) / 1000;
+                       if (is_in) {
+                               retval = 7268 + FS_LS_HOST_DELAY + retval;
+                       } else {
+                               retval = 6265 + FS_LS_HOST_DELAY + retval;
+                       }
+               } else {
+                       retval =
+                           (8354 * (31 + 10 * BitStuffTime(bytecount))) / 1000;
+                       retval = 9107 + FS_LS_HOST_DELAY + retval;
+               }
+               break;
+       case USB_SPEED_LOW:
+               if (is_in) {
+                       retval =
+                           (67667 * (31 + 10 * BitStuffTime(bytecount))) /
+                           1000;
+                       retval =
+                           64060 + (2 * HUB_LS_SETUP) + FS_LS_HOST_DELAY +
+                           retval;
+               } else {
+                       retval =
+                           (66700 * (31 + 10 * BitStuffTime(bytecount))) /
+                           1000;
+                       retval =
+                           64107 + (2 * HUB_LS_SETUP) + FS_LS_HOST_DELAY +
+                           retval;
+               }
+               break;
+       default:
+               DWC_WARN("Unknown device speed\n");
+               retval = -1;
+       }
+
+       return NS_TO_US(retval);
+}
+
+/** 
+ * Initializes a QH structure.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh  The QH to init.
+ * @param urb Holds the information about the device/endpoint that we need
+ *           to initialize the QH. 
+ */
+#define SCHEDULE_SLOP 10
+void qh_init(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, dwc_otg_hcd_urb_t * urb)
+{
+       char *speed, *type;
+       int dev_speed;
+       uint32_t hub_addr, hub_port;
+
+       dwc_memset(qh, 0, sizeof(dwc_otg_qh_t));
+
+       /* Initialize QH */
+       qh->ep_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
+       qh->ep_is_in = dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? 1 : 0;
+
+       qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+       qh->maxp = dwc_otg_hcd_get_mps(&urb->pipe_info);
+       DWC_CIRCLEQ_INIT(&qh->qtd_list);
+       DWC_LIST_INIT(&qh->qh_list_entry);
+       qh->channel = NULL;
+
+       /* FS/LS Enpoint on HS Hub 
+        * NOT virtual root hub */
+       dev_speed = hcd->fops->speed(hcd, urb->priv);
+
+       hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &hub_port);
+       qh->do_split = 0;
+       if (microframe_schedule)
+               qh->speed = dev_speed;
+
+
+       if (((dev_speed == USB_SPEED_LOW) ||
+            (dev_speed == USB_SPEED_FULL)) &&
+           (hub_addr != 0 && hub_addr != 1)) {
+               DWC_DEBUGPL(DBG_HCD,
+                           "QH init: EP %d: TT found at hub addr %d, for port %d\n",
+                           dwc_otg_hcd_get_ep_num(&urb->pipe_info), hub_addr,
+                           hub_port);
+               qh->do_split = 1;
+       }
+
+       if (qh->ep_type == UE_INTERRUPT || qh->ep_type == UE_ISOCHRONOUS) {
+               /* Compute scheduling parameters once and save them. */
+               hprt0_data_t hprt;
+
+               /** @todo Account for split transfers in the bus time. */
+               int bytecount =
+                   dwc_hb_mult(qh->maxp) * dwc_max_packet(qh->maxp);
+
+               qh->usecs =
+                   calc_bus_time((qh->do_split ? USB_SPEED_HIGH : dev_speed),
+                                 qh->ep_is_in, (qh->ep_type == UE_ISOCHRONOUS),
+                                 bytecount);
+               /* Start in a slightly future (micro)frame. */
+               qh->sched_frame = dwc_frame_num_inc(hcd->frame_number,
+                                                   SCHEDULE_SLOP);
+               qh->interval = urb->interval;
+
+#if 0
+               /* Increase interrupt polling rate for debugging. */
+               if (qh->ep_type == UE_INTERRUPT) {
+                       qh->interval = 8;
+               }
+#endif
+               hprt.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
+               if ((hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) &&
+                   ((dev_speed == USB_SPEED_LOW) ||
+                    (dev_speed == USB_SPEED_FULL))) {
+                       qh->interval *= 8;
+                       qh->sched_frame |= 0x7;
+                       qh->start_split_frame = qh->sched_frame;
+               }
+
+       }
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD QH Initialized\n");
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - qh = %p\n", qh);
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Device Address = %d\n",
+                   dwc_otg_hcd_get_dev_addr(&urb->pipe_info));
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Endpoint %d, %s\n",
+                   dwc_otg_hcd_get_ep_num(&urb->pipe_info),
+                   dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? "IN" : "OUT");
+       switch (dev_speed) {
+       case USB_SPEED_LOW:
+               qh->dev_speed = DWC_OTG_EP_SPEED_LOW;
+               speed = "low";
+               break;
+       case USB_SPEED_FULL:
+               qh->dev_speed = DWC_OTG_EP_SPEED_FULL;
+               speed = "full";
+               break;
+       case USB_SPEED_HIGH:
+               qh->dev_speed = DWC_OTG_EP_SPEED_HIGH;
+               speed = "high";
+               break;
+       default:
+               speed = "?";
+               break;
+       }
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Speed = %s\n", speed);
+
+       switch (qh->ep_type) {
+       case UE_ISOCHRONOUS:
+               type = "isochronous";
+               break;
+       case UE_INTERRUPT:
+               type = "interrupt";
+               break;
+       case UE_CONTROL:
+               type = "control";
+               break;
+       case UE_BULK:
+               type = "bulk";
+               break;
+       default:
+               type = "?";
+               break;
+       }
+
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Type = %s\n", type);
+
+#ifdef DEBUG
+       if (qh->ep_type == UE_INTERRUPT) {
+               DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - usecs = %d\n",
+                           qh->usecs);
+               DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - interval = %d\n",
+                           qh->interval);
+       }
+#endif
+
+}
+
+/**
+ * This function allocates and initializes a QH.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param urb Holds the information about the device/endpoint that we need
+ *           to initialize the QH.
+ * @param atomic_alloc Flag to do atomic allocation if needed
+ *
+ * @return Returns pointer to the newly allocated QH, or NULL on error. */
+dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t * hcd,
+                                   dwc_otg_hcd_urb_t * urb, int atomic_alloc)
+{
+       dwc_otg_qh_t *qh;
+
+       /* Allocate memory */
+       /** @todo add memflags argument */
+       qh = dwc_otg_hcd_qh_alloc(atomic_alloc);
+       if (qh == NULL) {
+               DWC_ERROR("qh allocation failed");
+               return NULL;
+       }
+
+       qh_init(hcd, qh, urb);
+
+       if (hcd->core_if->dma_desc_enable
+           && (dwc_otg_hcd_qh_init_ddma(hcd, qh) < 0)) {
+               dwc_otg_hcd_qh_free(hcd, qh);
+               return NULL;
+       }
+
+       return qh;
+}
+
+/* microframe_schedule=0 start */
+
+/**
+ * Checks that a channel is available for a periodic transfer.
+ *
+ * @return 0 if successful, negative error code otherise.
+ */
+static int periodic_channel_available(dwc_otg_hcd_t * hcd)
+{
+       /*
+        * Currently assuming that there is a dedicated host channnel for each
+        * periodic transaction plus at least one host channel for
+        * non-periodic transactions.
+        */
+       int status;
+       int num_channels;
+
+       num_channels = hcd->core_if->core_params->host_channels;
+       if ((hcd->periodic_channels + hcd->non_periodic_channels < num_channels)
+           && (hcd->periodic_channels < num_channels - 1)) {
+               status = 0;
+       } else {
+               DWC_INFO("%s: Total channels: %d, Periodic: %d, Non-periodic: %d\n",
+                       __func__, num_channels, hcd->periodic_channels, hcd->non_periodic_channels);    //NOTICE
+               status = -DWC_E_NO_SPACE;
+       }
+
+       return status;
+}
+
+/**
+ * Checks that there is sufficient bandwidth for the specified QH in the
+ * periodic schedule. For simplicity, this calculation assumes that all the
+ * transfers in the periodic schedule may occur in the same (micro)frame.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH containing periodic bandwidth required.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_periodic_bandwidth(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       int status;
+       int16_t max_claimed_usecs;
+
+       status = 0;
+
+       if ((qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) || qh->do_split) {
+               /*
+                * High speed mode.
+                * Max periodic usecs is 80% x 125 usec = 100 usec.
+                */
+
+               max_claimed_usecs = 100 - qh->usecs;
+       } else {
+               /*
+                * Full speed mode.
+                * Max periodic usecs is 90% x 1000 usec = 900 usec.
+                */
+               max_claimed_usecs = 900 - qh->usecs;
+       }
+
+       if (hcd->periodic_usecs > max_claimed_usecs) {
+               DWC_INFO("%s: already claimed usecs %d, required usecs %d\n", __func__, hcd->periodic_usecs, qh->usecs);        //NOTICE
+               status = -DWC_E_NO_SPACE;
+       }
+
+       return status;
+}
+
+/* microframe_schedule=0 end */
+
+/**
+ * Microframe scheduler
+ * track the total use in hcd->frame_usecs
+ * keep each qh use in qh->frame_usecs
+ * when surrendering the qh then donate the time back
+ */
+const unsigned short max_uframe_usecs[]={ 100, 100, 100, 100, 100, 100, 30, 0 };
+
+/*
+ * called from dwc_otg_hcd.c:dwc_otg_hcd_init
+ */
+int init_hcd_usecs(dwc_otg_hcd_t *_hcd)
+{
+       int i;
+       for (i=0; i<8; i++) {
+               _hcd->frame_usecs[i] = max_uframe_usecs[i];
+       }
+       return 0;
+}
+
+static int find_single_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       int i;
+       unsigned short utime;
+       int t_left;
+       int ret;
+       int done;
+
+       ret = -1;
+       utime = _qh->usecs;
+       t_left = utime;
+       i = 0;
+       done = 0;
+       while (done == 0) {
+               /* At the start _hcd->frame_usecs[i] = max_uframe_usecs[i]; */
+               if (utime <= _hcd->frame_usecs[i]) {
+                       _hcd->frame_usecs[i] -= utime;
+                       _qh->frame_usecs[i] += utime;
+                       t_left -= utime;
+                       ret = i;
+                       done = 1;
+                       return ret;
+               } else {
+                       i++;
+                       if (i == 8) {
+                               done = 1;
+                               ret = -1;
+                       }
+               }
+       }
+       return ret;
+ }
+
+/*
+ * use this for FS apps that can span multiple uframes
+  */
+static int find_multi_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       int i;
+       int j;
+       unsigned short utime;
+       int t_left;
+       int ret;
+       int done;
+       unsigned short xtime;
+
+       ret = -1;
+       utime = _qh->usecs;
+       t_left = utime;
+       i = 0;
+       done = 0;
+loop:
+       while (done == 0) {
+               if(_hcd->frame_usecs[i] <= 0) {
+                       i++;
+                       if (i == 8) {
+                               done = 1;
+                               ret = -1;
+                       }
+                       goto loop;
+               }
+
+               /*
+                * we need n consecutive slots
+                * so use j as a start slot j plus j+1 must be enough time (for now)
+                */
+               xtime= _hcd->frame_usecs[i];
+               for (j = i+1 ; j < 8 ; j++ ) {
+                       /*
+                        * if we add this frame remaining time to xtime we may
+                        * be OK, if not we need to test j for a complete frame
+                        */
+                       if ((xtime+_hcd->frame_usecs[j]) < utime) {
+                               if (_hcd->frame_usecs[j] < max_uframe_usecs[j]) {
+                                       j = 8;
+                                       ret = -1;
+                                       continue;
+                               }
+                       }
+                       if (xtime >= utime) {
+                               ret = i;
+                               j = 8;  /* stop loop with a good value ret */
+                               continue;
+                       }
+                       /* add the frame time to x time */
+                       xtime += _hcd->frame_usecs[j];
+                      /* we must have a fully available next frame or break */
+                      if ((xtime < utime)
+                                      && (_hcd->frame_usecs[j] == max_uframe_usecs[j])) {
+                              ret = -1;
+                              j = 8;  /* stop loop with a bad value ret */
+                              continue;
+                      }
+               }
+               if (ret >= 0) {
+                       t_left = utime;
+                       for (j = i; (t_left>0) && (j < 8); j++ ) {
+                               t_left -= _hcd->frame_usecs[j];
+                               if ( t_left <= 0 ) {
+                                       _qh->frame_usecs[j] += _hcd->frame_usecs[j] + t_left;
+                                       _hcd->frame_usecs[j]= -t_left;
+                                       ret = i;
+                                       done = 1;
+                               } else {
+                                       _qh->frame_usecs[j] += _hcd->frame_usecs[j];
+                                       _hcd->frame_usecs[j] = 0;
+                               }
+                       }
+               } else {
+                       i++;
+                       if (i == 8) {
+                               done = 1;
+                               ret = -1;
+                       }
+               }
+       }
+       return ret;
+}
+
+static int find_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       int ret;
+       ret = -1;
+
+       if (_qh->speed == USB_SPEED_HIGH) {
+               /* if this is a hs transaction we need a full frame */
+               ret = find_single_uframe(_hcd, _qh);
+       } else {
+               /* if this is a fs transaction we may need a sequence of frames */
+               ret = find_multi_uframe(_hcd, _qh);
+       }
+       return ret;
+}
+
+/**
+ * Checks that the max transfer size allowed in a host channel is large enough
+ * to handle the maximum data transfer in a single (micro)frame for a periodic
+ * transfer.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for a periodic endpoint.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_max_xfer_size(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       int status;
+       uint32_t max_xfer_size;
+       uint32_t max_channel_xfer_size;
+
+       status = 0;
+
+       max_xfer_size = dwc_max_packet(qh->maxp) * dwc_hb_mult(qh->maxp);
+       max_channel_xfer_size = hcd->core_if->core_params->max_transfer_size;
+
+       if (max_xfer_size > max_channel_xfer_size) {
+               DWC_INFO("%s: Periodic xfer length %d > " "max xfer length for channel %d\n",
+                               __func__, max_xfer_size, max_channel_xfer_size);        //NOTICE
+               status = -DWC_E_NO_SPACE;
+       }
+
+       return status;
+}
+
+/**
+ * Schedules an interrupt or isochronous transfer in the periodic schedule.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for the periodic transfer. The QH should already contain the
+ * scheduling information.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int schedule_periodic(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       int status = 0;
+
+       if (microframe_schedule) {
+               int frame;
+               status = find_uframe(hcd, qh);
+               frame = -1;
+               if (status == 0) {
+                       frame = 7;
+               } else {
+                       if (status > 0 )
+                               frame = status-1;
+               }
+
+               /* Set the new frame up */
+               if (frame > -1) {
+                       qh->sched_frame &= ~0x7;
+                       qh->sched_frame |= (frame & 7);
+               }
+
+               if (status != -1)
+                       status = 0;
+       } else {
+               status = periodic_channel_available(hcd);
+               if (status) {
+                       DWC_INFO("%s: No host channel available for periodic " "transfer.\n", __func__);        //NOTICE
+                       return status;
+               }
+
+               status = check_periodic_bandwidth(hcd, qh);
+       }
+       if (status) {
+               DWC_INFO("%s: Insufficient periodic bandwidth for "
+                           "periodic transfer.\n", __func__);
+               return status;
+       }
+       status = check_max_xfer_size(hcd, qh);
+       if (status) {
+               DWC_INFO("%s: Channel max transfer size too small "
+                           "for periodic transfer.\n", __func__);
+               return status;
+       }
+
+       if (hcd->core_if->dma_desc_enable) {
+               /* Don't rely on SOF and start in ready schedule */
+               DWC_LIST_INSERT_TAIL(&hcd->periodic_sched_ready, &qh->qh_list_entry);
+       }
+       else {
+       /* Always start in the inactive schedule. */
+       DWC_LIST_INSERT_TAIL(&hcd->periodic_sched_inactive, &qh->qh_list_entry);
+       }
+
+       if (!microframe_schedule) {
+               /* Reserve the periodic channel. */
+               hcd->periodic_channels++;
+       }
+
+       /* Update claimed usecs per (micro)frame. */
+       hcd->periodic_usecs += qh->usecs;
+
+       return status;
+}
+
+/**
+ * This function adds a QH to either the non periodic or periodic schedule if
+ * it is not already in the schedule. If the QH is already in the schedule, no
+ * action is taken.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       int status = 0;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+               /* QH already in a schedule. */
+               return status;
+       }
+
+       /* Add the new QH to the appropriate schedule */
+       if (dwc_qh_is_non_per(qh)) {
+               /* Always start in the inactive schedule. */
+               DWC_LIST_INSERT_TAIL(&hcd->non_periodic_sched_inactive,
+                                    &qh->qh_list_entry);
+       } else {
+               status = schedule_periodic(hcd, qh);
+               if ( !hcd->periodic_qh_count ) {
+                       intr_mask.b.sofintr = 1;
+                       DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk,
+                                                               intr_mask.d32, intr_mask.d32);
+               }
+               hcd->periodic_qh_count++;
+       }
+
+       return status;
+}
+
+/**
+ * Removes an interrupt or isochronous transfer from the periodic schedule.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for the periodic transfer.
+ */
+static void deschedule_periodic(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       int i;
+       DWC_LIST_REMOVE_INIT(&qh->qh_list_entry);
+
+       /* Update claimed usecs per (micro)frame. */
+       hcd->periodic_usecs -= qh->usecs;
+
+       if (!microframe_schedule) {
+               /* Release the periodic channel reservation. */
+               hcd->periodic_channels--;
+       } else {
+               for (i = 0; i < 8; i++) {
+                       hcd->frame_usecs[i] += qh->frame_usecs[i];
+                       qh->frame_usecs[i] = 0;
+               }
+       }
+}
+
+/** 
+ * Removes a QH from either the non-periodic or periodic schedule.  Memory is
+ * not freed.
+ *
+ * @param hcd The HCD state structure.
+ * @param qh QH to remove from schedule. */
+void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+               /* QH is not in a schedule. */
+               return;
+       }
+
+       if (dwc_qh_is_non_per(qh)) {
+               if (hcd->non_periodic_qh_ptr == &qh->qh_list_entry) {
+                       hcd->non_periodic_qh_ptr =
+                           hcd->non_periodic_qh_ptr->next;
+               }
+               DWC_LIST_REMOVE_INIT(&qh->qh_list_entry);
+       } else {
+               deschedule_periodic(hcd, qh);
+               hcd->periodic_qh_count--;
+               if( !hcd->periodic_qh_count ) {
+                       intr_mask.b.sofintr = 1;
+                               DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk,
+                                                                       intr_mask.d32, 0);
+               }
+       }
+}
+
+/**
+ * Deactivates a QH. For non-periodic QHs, removes the QH from the active
+ * non-periodic schedule. The QH is added to the inactive non-periodic
+ * schedule if any QTDs are still attached to the QH.
+ *
+ * For periodic QHs, the QH is removed from the periodic queued schedule. If
+ * there are any QTDs still attached to the QH, the QH is added to either the
+ * periodic inactive schedule or the periodic ready schedule and its next
+ * scheduled frame is calculated. The QH is placed in the ready schedule if
+ * the scheduled frame has been reached already. Otherwise it's placed in the
+ * inactive schedule. If there are no QTDs attached to the QH, the QH is
+ * completely removed from the periodic schedule.
+ */
+void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+                              int sched_next_periodic_split)
+{      
+       if (dwc_qh_is_non_per(qh)) {
+               dwc_otg_hcd_qh_remove(hcd, qh);
+               if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+                       /* Add back to inactive non-periodic schedule. */
+                       dwc_otg_hcd_qh_add(hcd, qh);
+               }
+       } else {
+               uint16_t frame_number = dwc_otg_hcd_get_frame_number(hcd);
+
+               if (qh->do_split) {
+                       /* Schedule the next continuing periodic split transfer */
+                       if (sched_next_periodic_split) {
+
+                               qh->sched_frame = frame_number;
+                               if (dwc_frame_num_le(frame_number,
+                                                    dwc_frame_num_inc
+                                                    (qh->start_split_frame,
+                                                     1))) {
+                                       /*
+                                        * Allow one frame to elapse after start
+                                        * split microframe before scheduling
+                                        * complete split, but DONT if we are
+                                        * doing the next start split in the
+                                        * same frame for an ISOC out.
+                                        */
+                                       if ((qh->ep_type != UE_ISOCHRONOUS) ||
+                                           (qh->ep_is_in != 0)) {
+                                               qh->sched_frame =
+                                                   dwc_frame_num_inc(qh->sched_frame, 1);
+                                       }
+                               }
+                       } else {
+                               qh->sched_frame =
+                                   dwc_frame_num_inc(qh->start_split_frame,
+                                                     qh->interval);
+                               if (dwc_frame_num_le
+                                   (qh->sched_frame, frame_number)) {
+                                       qh->sched_frame = frame_number;
+                               }
+                               qh->sched_frame |= 0x7;
+                               qh->start_split_frame = qh->sched_frame;
+                       }
+               } else {
+                       qh->sched_frame =
+                           dwc_frame_num_inc(qh->sched_frame, qh->interval);
+                       if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
+                               qh->sched_frame = frame_number;
+                       }
+               }
+
+               if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+                       dwc_otg_hcd_qh_remove(hcd, qh);
+               } else {
+                       /*
+                        * Remove from periodic_sched_queued and move to
+                        * appropriate queue.
+                        */
+                       if ((microframe_schedule && dwc_frame_num_le(qh->sched_frame, frame_number)) ||
+                       (!microframe_schedule && qh->sched_frame == frame_number)) {
+                               DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_ready,
+                                                  &qh->qh_list_entry);
+                       } else {
+                               DWC_LIST_MOVE_HEAD
+                                   (&hcd->periodic_sched_inactive,
+                                    &qh->qh_list_entry);
+                       }
+               }
+       }
+}
+
+/** 
+ * This function allocates and initializes a QTD. 
+ *
+ * @param urb The URB to create a QTD from.  Each URB-QTD pair will end up
+ *           pointing to each other so each pair should have a unique correlation.
+ * @param atomic_alloc Flag to do atomic alloc if needed
+ *
+ * @return Returns pointer to the newly allocated QTD, or NULL on error. */
+dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(dwc_otg_hcd_urb_t * urb, int atomic_alloc)
+{
+       dwc_otg_qtd_t *qtd;
+
+       qtd = dwc_otg_hcd_qtd_alloc(atomic_alloc);
+       if (qtd == NULL) {
+               return NULL;
+       }
+
+       dwc_otg_hcd_qtd_init(qtd, urb);
+       return qtd;
+}
+
+/** 
+ * Initializes a QTD structure.
+ *
+ * @param qtd The QTD to initialize.
+ * @param urb The URB to use for initialization.  */
+void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * qtd, dwc_otg_hcd_urb_t * urb)
+{
+       dwc_memset(qtd, 0, sizeof(dwc_otg_qtd_t));
+       qtd->urb = urb;
+       if (dwc_otg_hcd_get_pipe_type(&urb->pipe_info) == UE_CONTROL) {
+               /*
+                * The only time the QTD data toggle is used is on the data
+                * phase of control transfers. This phase always starts with
+                * DATA1.
+                */
+               qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+               qtd->control_phase = DWC_OTG_CONTROL_SETUP;
+       }
+
+       /* start split */
+       qtd->complete_split = 0;
+       qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+       qtd->isoc_split_offset = 0;
+       qtd->in_process = 0;
+
+       /* Store the qtd ptr in the urb to reference what QTD. */
+       urb->qtd = qtd;
+       return;
+}
+
+/**
+ * This function adds a QTD to the QTD-list of a QH.  It will find the correct
+ * QH to place the QTD into.  If it does not find a QH, then it will create a
+ * new QH. If the QH to which the QTD is added is not currently scheduled, it
+ * is placed into the proper schedule based on its EP type.
+ *
+ * @param[in] qtd The QTD to add
+ * @param[in] hcd The DWC HCD structure
+ * @param[out] qh out parameter to return queue head
+ * @param atomic_alloc Flag to do atomic alloc if needed
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * qtd,
+                       dwc_otg_hcd_t * hcd, dwc_otg_qh_t ** qh, int atomic_alloc)
+{
+       int retval = 0;
+       dwc_irqflags_t flags;
+
+       dwc_otg_hcd_urb_t *urb = qtd->urb;
+
+       /*
+        * Get the QH which holds the QTD-list to insert to. Create QH if it
+        * doesn't exist.
+        */
+       if (*qh == NULL) {
+               *qh = dwc_otg_hcd_qh_create(hcd, urb, atomic_alloc);
+               if (*qh == NULL) {
+                       retval = -1;
+                       goto done;
+               }
+       }
+       DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+       retval = dwc_otg_hcd_qh_add(hcd, *qh);
+       if (retval == 0) {
+               DWC_CIRCLEQ_INSERT_TAIL(&((*qh)->qtd_list), qtd,
+                                       qtd_list_entry);
+       }
+       DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+
+done:
+
+       return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h b/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h
new file mode 100644
index 0000000..a7e9076
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h
@@ -0,0 +1,185 @@
+#ifndef _DWC_OS_DEP_H_
+#define _DWC_OS_DEP_H_
+
+/**
+ * @file
+ *
+ * This file contains OS dependent structures.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+#include <linux/jiffies.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+#include <linux/stat.h>
+#include <linux/pci.h>
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+# include <linux/irq.h>
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
+# include <linux/usb/gadget.h>
+#else
+# include <linux/usb_gadget.h>
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+# include <asm/irq.h>
+#endif
+
+#ifdef PCI_INTERFACE
+# include <asm/io.h>
+#endif
+
+#ifdef LM_INTERFACE
+# include <asm/unaligned.h>
+# include <asm/sizes.h>
+# include <asm/param.h>
+# include <asm/io.h>
+# if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30))
+#  include <asm/arch/hardware.h>
+#  include <asm/arch/lm.h>
+#  include <asm/arch/irqs.h>
+#  include <asm/arch/regs-irq.h>
+# else
+/* in 2.6.31, at least, we seem to have lost the generic LM infrastructure -
+   here we assume that the machine architecture provides definitions
+   in its own header
+*/
+#  include <mach/lm.h>
+#  include <mach/hardware.h>
+# endif
+#endif
+
+#ifdef PLATFORM_INTERFACE
+#include <linux/platform_device.h>
+#include <asm/mach/map.h>
+#endif
+
+/** The OS page size */
+#define DWC_OS_PAGE_SIZE       PAGE_SIZE
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
+typedef int gfp_t;
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
+# define IRQF_SHARED SA_SHIRQ
+#endif
+
+typedef struct os_dependent {
+       /** Base address returned from ioremap() */
+       void *base;
+
+       /** Register offset for Diagnostic API */
+       uint32_t reg_offset;
+
+#ifdef LM_INTERFACE
+       struct lm_device *lmdev;
+#elif  defined(PCI_INTERFACE)
+       struct pci_dev *pcidev;
+
+       /** Start address of a PCI region */
+       resource_size_t rsrc_start;
+       
+       /** Length address of a PCI region */
+       resource_size_t rsrc_len;
+#elif  defined(PLATFORM_INTERFACE)
+       struct platform_device *platformdev;
+#endif
+
+} os_dependent_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+/* Type for the our device on the chosen bus */
+#if   defined(LM_INTERFACE)
+typedef struct lm_device       dwc_bus_dev_t;
+#elif defined(PCI_INTERFACE)
+typedef struct pci_dev         dwc_bus_dev_t;
+#elif defined(PLATFORM_INTERFACE)
+typedef struct platform_device dwc_bus_dev_t;
+#endif
+
+/* Helper macro to retrieve drvdata from the device on the chosen bus */
+#if    defined(LM_INTERFACE)
+#define DWC_OTG_BUSDRVDATA(_dev) lm_get_drvdata(_dev)
+#elif  defined(PCI_INTERFACE)
+#define DWC_OTG_BUSDRVDATA(_dev) pci_get_drvdata(_dev)
+#elif  defined(PLATFORM_INTERFACE)
+#define DWC_OTG_BUSDRVDATA(_dev) platform_get_drvdata(_dev)
+#endif
+
+/**
+ * Helper macro returning the otg_device structure of a given struct device
+ *
+ * c.f. static dwc_otg_device_t *dwc_otg_drvdev(struct device *_dev)
+ */
+#ifdef LM_INTERFACE
+#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
+                struct lm_device *lm_dev = \
+                        container_of(_dev, struct lm_device, dev); \
+                _var = lm_get_drvdata(lm_dev); \
+        } while (0)
+
+#elif defined(PCI_INTERFACE)
+#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
+                _var = dev_get_drvdata(_dev); \
+        } while (0)
+
+#elif defined(PLATFORM_INTERFACE)
+#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
+                struct platform_device *platform_dev = \
+                        container_of(_dev, struct platform_device, dev); \
+                _var = platform_get_drvdata(platform_dev); \
+        } while (0)
+#endif
+
+
+/**
+ * Helper macro returning the struct dev of the given struct os_dependent
+ *
+ * c.f. static struct device *dwc_otg_getdev(struct os_dependent *osdep)
+ */
+#ifdef LM_INTERFACE
+#define DWC_OTG_OS_GETDEV(_osdep) \
+        ((_osdep).lmdev == NULL? NULL: &(_osdep).lmdev->dev)
+#elif defined(PCI_INTERFACE)
+#define DWC_OTG_OS_GETDEV(_osdep) \
+        ((_osdep).pci_dev == NULL? NULL: &(_osdep).pci_dev->dev)
+#elif defined(PLATFORM_INTERFACE)
+#define DWC_OTG_OS_GETDEV(_osdep) \
+        ((_osdep).platformdev == NULL? NULL: &(_osdep).platformdev->dev)
+#endif
+
+
+
+
+#endif /* _DWC_OS_DEP_H_ */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_pcd.c b/drivers/usb/host/dwc_otg/dwc_otg_pcd.c
new file mode 100644
index 0000000..c97d65c
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd.c
@@ -0,0 +1,2708 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.c $
+ * $Revision: #101 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+/** @file
+ * This file implements PCD Core. All code in this file is portable and doesn't
+ * use any OS specific functions.
+ * PCD Core provides Interface, defined in <code><dwc_otg_pcd_if.h></code>
+ * header file, which can be used to implement OS specific PCD interface.
+ *
+ * An important function of the PCD is managing interrupts generated
+ * by the DWC_otg controller. The implementation of the DWC_otg device
+ * mode interrupt service routines is in dwc_otg_pcd_intr.c.
+ *
+ * @todo Add Device Mode test modes (Test J mode, Test K mode, etc).
+ * @todo Does it work when the request size is greater than DEPTSIZ
+ * transfer size
+ *
+ */
+
+#include "dwc_otg_pcd.h"
+
+#ifdef DWC_UTE_CFI
+#include "dwc_otg_cfi.h"
+
+extern int init_cfi(cfiobject_t * cfiobj);
+#endif
+
+/**
+ * Choose endpoint from ep arrays using usb_ep structure.
+ */
+static dwc_otg_pcd_ep_t *get_ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
+{
+       int i;
+       if (pcd->ep0.priv == handle) {
+               return &pcd->ep0;
+       }
+       for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
+               if (pcd->in_ep[i].priv == handle)
+                       return &pcd->in_ep[i];
+               if (pcd->out_ep[i].priv == handle)
+                       return &pcd->out_ep[i];
+       }
+
+       return NULL;
+}
+
+/**
+ * This function completes a request.  It call's the request call back.
+ */
+void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep, dwc_otg_pcd_request_t * req,
+                         int32_t status)
+{
+       unsigned stopped = ep->stopped;
+       
+       DWC_DEBUGPL(DBG_PCDV, "%s(ep %p req %p)\n", __func__, ep, req);
+       DWC_CIRCLEQ_REMOVE_INIT(&ep->queue, req, queue_entry);
+
+       /* don't modify queue heads during completion callback */
+       ep->stopped = 1;
+       /* spin_unlock/spin_lock now done in fops->complete() */
+       ep->pcd->fops->complete(ep->pcd, ep->priv, req->priv, status,
+                               req->actual);
+
+       if (ep->pcd->request_pending > 0) {
+               --ep->pcd->request_pending;
+       }
+
+       ep->stopped = stopped;
+       DWC_FREE(req);
+}
+
+/**
+ * This function terminates all the requsts in the EP request queue.
+ */
+void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_otg_pcd_request_t *req;
+
+       ep->stopped = 1;
+
+       /* called with irqs blocked?? */
+       while (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+               dwc_otg_request_done(ep, req, -DWC_E_SHUTDOWN);
+       }
+}
+
+void dwc_otg_pcd_start(dwc_otg_pcd_t * pcd,
+                      const struct dwc_otg_pcd_function_ops *fops)
+{
+       pcd->fops = fops;
+}
+
+/**
+ * PCD Callback function for initializing the PCD when switching to
+ * device mode.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_start_cb(void *p)
+{
+       dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+       /*
+        * Initialized the Core for Device mode.
+        */
+       if (dwc_otg_is_device_mode(core_if)) {
+               dwc_otg_core_dev_init(core_if);
+               /* Set core_if's lock pointer to the pcd->lock */
+               core_if->lock = pcd->lock;
+       }
+       return 1;
+}
+
+/** CFI-specific buffer allocation function for EP */
+#ifdef DWC_UTE_CFI
+uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep, dwc_dma_t * addr,
+                             size_t buflen, int flags)
+{
+       dwc_otg_pcd_ep_t *ep;
+       ep = get_ep_from_handle(pcd, pep);
+       if (!ep) {
+               DWC_WARN("bad ep\n");
+               return -DWC_E_INVALID;
+       }
+
+       return pcd->cfi->ops.ep_alloc_buf(pcd->cfi, pcd, ep, addr, buflen,
+                                         flags);
+}
+#else
+uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep, dwc_dma_t * addr,
+                             size_t buflen, int flags);
+#endif
+
+/**
+ * PCD Callback function for notifying the PCD when resuming from
+ * suspend.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_resume_cb(void *p)
+{
+       dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+
+       if (pcd->fops->resume) {
+               pcd->fops->resume(pcd);
+       }
+
+       /* Stop the SRP timeout timer. */
+       if ((GET_CORE_IF(pcd)->core_params->phy_type != DWC_PHY_TYPE_PARAM_FS)
+           || (!GET_CORE_IF(pcd)->core_params->i2c_enable)) {
+               if (GET_CORE_IF(pcd)->srp_timer_started) {
+                       GET_CORE_IF(pcd)->srp_timer_started = 0;
+                       DWC_TIMER_CANCEL(GET_CORE_IF(pcd)->srp_timer);
+               }
+       }
+       return 1;
+}
+
+/**
+ * PCD Callback function for notifying the PCD device is suspended.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_suspend_cb(void *p)
+{
+       dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+
+       if (pcd->fops->suspend) {
+               DWC_SPINUNLOCK(pcd->lock);
+               pcd->fops->suspend(pcd);
+               DWC_SPINLOCK(pcd->lock);
+       }
+
+       return 1;
+}
+
+/**
+ * PCD Callback function for stopping the PCD when switching to Host
+ * mode.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_stop_cb(void *p)
+{
+       dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+       extern void dwc_otg_pcd_stop(dwc_otg_pcd_t * _pcd);
+
+       dwc_otg_pcd_stop(pcd);
+       return 1;
+}
+
+/**
+ * PCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t pcd_callbacks = {
+       .start = dwc_otg_pcd_start_cb,
+       .stop = dwc_otg_pcd_stop_cb,
+       .suspend = dwc_otg_pcd_suspend_cb,
+       .resume_wakeup = dwc_otg_pcd_resume_cb,
+       .p = 0,                 /* Set at registration */
+};
+
+/**
+ * This function allocates a DMA Descriptor chain for the Endpoint
+ * buffer to be used for a transfer to/from the specified endpoint.
+ */
+dwc_otg_dev_dma_desc_t *dwc_otg_ep_alloc_desc_chain(dwc_dma_t * dma_desc_addr,
+                                                   uint32_t count)
+{
+       return DWC_DMA_ALLOC_ATOMIC(count * sizeof(dwc_otg_dev_dma_desc_t), 
+                                                       dma_desc_addr);
+}
+
+/**
+ * This function frees a DMA Descriptor chain that was allocated by ep_alloc_desc.
+ */
+void dwc_otg_ep_free_desc_chain(dwc_otg_dev_dma_desc_t * desc_addr,
+                               uint32_t dma_desc_addr, uint32_t count)
+{
+       DWC_DMA_FREE(count * sizeof(dwc_otg_dev_dma_desc_t), desc_addr,
+                    dma_desc_addr);
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_ddma_transfer(dwc_otg_core_if_t * core_if,
+                                       dwc_ep_t * dwc_ep)
+{
+
+       dsts_data_t dsts = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       volatile uint32_t *addr;
+       int i, j;
+       uint32_t len;
+
+       if (dwc_ep->is_in)
+               dwc_ep->desc_cnt = dwc_ep->buf_proc_intrvl / dwc_ep->bInterval;
+       else
+               dwc_ep->desc_cnt =
+                   dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
+                   dwc_ep->bInterval;
+
+       /** Allocate descriptors for double buffering */
+       dwc_ep->iso_desc_addr =
+           dwc_otg_ep_alloc_desc_chain(&dwc_ep->iso_dma_desc_addr,
+                                       dwc_ep->desc_cnt * 2);
+       if (dwc_ep->desc_addr) {
+               DWC_WARN("%s, can't allocate DMA descriptor chain\n", __func__);
+               return;
+       }
+
+       dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+       /** ISO OUT EP */
+       if (dwc_ep->is_in == 0) {
+               dev_dma_desc_sts_t sts = {.d32 = 0 };
+               dwc_otg_dev_dma_desc_t *dma_desc = dwc_ep->iso_desc_addr;
+               dma_addr_t dma_ad;
+               uint32_t data_per_desc;
+               dwc_otg_dev_out_ep_regs_t *out_regs =
+                   core_if->dev_if->out_ep_regs[dwc_ep->num];
+               int offset;
+
+               addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+               dma_ad = (dma_addr_t) DWC_READ_REG32(&(out_regs->doepdma));
+
+               /** Buffer 0 descriptors setup */
+               dma_ad = dwc_ep->dma_addr0;
+
+               sts.b_iso_out.bs = BS_HOST_READY;
+               sts.b_iso_out.rxsts = 0;
+               sts.b_iso_out.l = 0;
+               sts.b_iso_out.sp = 0;
+               sts.b_iso_out.ioc = 0;
+               sts.b_iso_out.pid = 0;
+               sts.b_iso_out.framenum = 0;
+
+               offset = 0;
+               for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+                    i += dwc_ep->pkt_per_frm) {
+
+                       for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+                               uint32_t len = (j + 1) * dwc_ep->maxpacket;
+                               if (len > dwc_ep->data_per_frame)
+                                       data_per_desc =
+                                           dwc_ep->data_per_frame -
+                                           j * dwc_ep->maxpacket;
+                               else
+                                       data_per_desc = dwc_ep->maxpacket;
+                               len = data_per_desc % 4;
+                               if (len)
+                                       data_per_desc += 4 - len;
+
+                               sts.b_iso_out.rxbytes = data_per_desc;
+                               dma_desc->buf = dma_ad;
+                               dma_desc->status.d32 = sts.d32;
+
+                               offset += data_per_desc;
+                               dma_desc++;
+                               dma_ad += data_per_desc;
+                       }
+               }
+
+               for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+                       uint32_t len = (j + 1) * dwc_ep->maxpacket;
+                       if (len > dwc_ep->data_per_frame)
+                               data_per_desc =
+                                   dwc_ep->data_per_frame -
+                                   j * dwc_ep->maxpacket;
+                       else
+                               data_per_desc = dwc_ep->maxpacket;
+                       len = data_per_desc % 4;
+                       if (len)
+                               data_per_desc += 4 - len;
+                       sts.b_iso_out.rxbytes = data_per_desc;
+                       dma_desc->buf = dma_ad;
+                       dma_desc->status.d32 = sts.d32;
+
+                       offset += data_per_desc;
+                       dma_desc++;
+                       dma_ad += data_per_desc;
+               }
+
+               sts.b_iso_out.ioc = 1;
+               len = (j + 1) * dwc_ep->maxpacket;
+               if (len > dwc_ep->data_per_frame)
+                       data_per_desc =
+                           dwc_ep->data_per_frame - j * dwc_ep->maxpacket;
+               else
+                       data_per_desc = dwc_ep->maxpacket;
+               len = data_per_desc % 4;
+               if (len)
+                       data_per_desc += 4 - len;
+               sts.b_iso_out.rxbytes = data_per_desc;
+
+               dma_desc->buf = dma_ad;
+               dma_desc->status.d32 = sts.d32;
+               dma_desc++;
+
+               /** Buffer 1 descriptors setup */
+               sts.b_iso_out.ioc = 0;
+               dma_ad = dwc_ep->dma_addr1;
+
+               offset = 0;
+               for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+                    i += dwc_ep->pkt_per_frm) {
+                       for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+                               uint32_t len = (j + 1) * dwc_ep->maxpacket;
+                               if (len > dwc_ep->data_per_frame)
+                                       data_per_desc =
+                                           dwc_ep->data_per_frame -
+                                           j * dwc_ep->maxpacket;
+                               else
+                                       data_per_desc = dwc_ep->maxpacket;
+                               len = data_per_desc % 4;
+                               if (len)
+                                       data_per_desc += 4 - len;
+
+                               data_per_desc =
+                                   sts.b_iso_out.rxbytes = data_per_desc;
+                               dma_desc->buf = dma_ad;
+                               dma_desc->status.d32 = sts.d32;
+
+                               offset += data_per_desc;
+                               dma_desc++;
+                               dma_ad += data_per_desc;
+                       }
+               }
+               for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+                       data_per_desc =
+                           ((j + 1) * dwc_ep->maxpacket >
+                            dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+                           j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+                       data_per_desc +=
+                           (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+                       sts.b_iso_out.rxbytes = data_per_desc;
+                       dma_desc->buf = dma_ad;
+                       dma_desc->status.d32 = sts.d32;
+
+                       offset += data_per_desc;
+                       dma_desc++;
+                       dma_ad += data_per_desc;
+               }
+
+               sts.b_iso_out.ioc = 1;
+               sts.b_iso_out.l = 1;
+               data_per_desc =
+                   ((j + 1) * dwc_ep->maxpacket >
+                    dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+                   j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+               data_per_desc +=
+                   (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+               sts.b_iso_out.rxbytes = data_per_desc;
+
+               dma_desc->buf = dma_ad;
+               dma_desc->status.d32 = sts.d32;
+
+               dwc_ep->next_frame = 0;
+
+               /** Write dma_ad into DOEPDMA register */
+               DWC_WRITE_REG32(&(out_regs->doepdma),
+                               (uint32_t) dwc_ep->iso_dma_desc_addr);
+
+       }
+       /** ISO IN EP */
+       else {
+               dev_dma_desc_sts_t sts = {.d32 = 0 };
+               dwc_otg_dev_dma_desc_t *dma_desc = dwc_ep->iso_desc_addr;
+               dma_addr_t dma_ad;
+               dwc_otg_dev_in_ep_regs_t *in_regs =
+                   core_if->dev_if->in_ep_regs[dwc_ep->num];
+               unsigned int frmnumber;
+               fifosize_data_t txfifosize, rxfifosize;
+
+               txfifosize.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[dwc_ep->num]->
+                                  dtxfsts);
+               rxfifosize.d32 =
+                   DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+
+               addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+
+               dma_ad = dwc_ep->dma_addr0;
+
+               dsts.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+               sts.b_iso_in.bs = BS_HOST_READY;
+               sts.b_iso_in.txsts = 0;
+               sts.b_iso_in.sp =
+                   (dwc_ep->data_per_frame % dwc_ep->maxpacket) ? 1 : 0;
+               sts.b_iso_in.ioc = 0;
+               sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
+
+               frmnumber = dwc_ep->next_frame;
+
+               sts.b_iso_in.framenum = frmnumber;
+               sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
+               sts.b_iso_in.l = 0;
+
+               /** Buffer 0 descriptors setup */
+               for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
+                       dma_desc->buf = dma_ad;
+                       dma_desc->status.d32 = sts.d32;
+                       dma_desc++;
+
+                       dma_ad += dwc_ep->data_per_frame;
+                       sts.b_iso_in.framenum += dwc_ep->bInterval;
+               }
+
+               sts.b_iso_in.ioc = 1;
+               dma_desc->buf = dma_ad;
+               dma_desc->status.d32 = sts.d32;
+               ++dma_desc;
+
+               /** Buffer 1 descriptors setup */
+               sts.b_iso_in.ioc = 0;
+               dma_ad = dwc_ep->dma_addr1;
+
+               for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+                    i += dwc_ep->pkt_per_frm) {
+                       dma_desc->buf = dma_ad;
+                       dma_desc->status.d32 = sts.d32;
+                       dma_desc++;
+
+                       dma_ad += dwc_ep->data_per_frame;
+                       sts.b_iso_in.framenum += dwc_ep->bInterval;
+
+                       sts.b_iso_in.ioc = 0;
+               }
+               sts.b_iso_in.ioc = 1;
+               sts.b_iso_in.l = 1;
+
+               dma_desc->buf = dma_ad;
+               dma_desc->status.d32 = sts.d32;
+
+               dwc_ep->next_frame = sts.b_iso_in.framenum + dwc_ep->bInterval;
+
+               /** Write dma_ad into diepdma register */
+               DWC_WRITE_REG32(&(in_regs->diepdma),
+                               (uint32_t) dwc_ep->iso_dma_desc_addr);
+       }
+       /** Enable endpoint, clear nak  */
+       depctl.d32 = 0;
+       depctl.b.epena = 1;
+       depctl.b.usbactep = 1;
+       depctl.b.cnak = 1;
+
+       DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
+       depctl.d32 = DWC_READ_REG32(addr);
+}
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t * core_if,
+                                      dwc_ep_t * ep)
+{
+       depctl_data_t depctl = {.d32 = 0 };
+       volatile uint32_t *addr;
+
+       if (ep->is_in) {
+               addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+       } else {
+               addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+       }
+
+       if (core_if->dma_enable == 0 || core_if->dma_desc_enable != 0) {
+               return;
+       } else {
+               deptsiz_data_t deptsiz = {.d32 = 0 };
+
+               ep->xfer_len =
+                   ep->data_per_frame * ep->buf_proc_intrvl / ep->bInterval;
+               ep->pkt_cnt =
+                   (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
+               ep->xfer_count = 0;
+               ep->xfer_buff =
+                   (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+               ep->dma_addr =
+                   (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+
+               if (ep->is_in) {
+                       /* Program the transfer size and packet count
+                        *      as follows: xfersize = N * maxpacket +
+                        *      short_packet pktcnt = N + (short_packet
+                        *      exist ? 1 : 0) 
+                        */
+                       deptsiz.b.mc = ep->pkt_per_frm;
+                       deptsiz.b.xfersize = ep->xfer_len;
+                       deptsiz.b.pktcnt =
+                           (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
+                       DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                       dieptsiz, deptsiz.d32);
+
+                       /* Write the DMA register */
+                       DWC_WRITE_REG32(&
+                                       (core_if->dev_if->in_ep_regs[ep->num]->
+                                        diepdma), (uint32_t) ep->dma_addr);
+
+               } else {
+                       deptsiz.b.pktcnt =
+                           (ep->xfer_len + (ep->maxpacket - 1)) /
+                           ep->maxpacket;
+                       deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+
+                       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->
+                                       doeptsiz, deptsiz.d32);
+
+                       /* Write the DMA register */
+                       DWC_WRITE_REG32(&
+                                       (core_if->dev_if->out_ep_regs[ep->num]->
+                                        doepdma), (uint32_t) ep->dma_addr);
+
+               }
+               /** Enable endpoint, clear nak  */
+               depctl.d32 = 0;
+               depctl.b.epena = 1;
+               depctl.b.cnak = 1;
+
+               DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
+       }
+}
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+static void dwc_otg_iso_ep_start_transfer(dwc_otg_core_if_t * core_if,
+                                         dwc_ep_t * ep)
+{
+       if (core_if->dma_enable) {
+               if (core_if->dma_desc_enable) {
+                       if (ep->is_in) {
+                               ep->desc_cnt = ep->pkt_cnt / ep->pkt_per_frm;
+                       } else {
+                               ep->desc_cnt = ep->pkt_cnt;
+                       }
+                       dwc_otg_iso_ep_start_ddma_transfer(core_if, ep);
+               } else {
+                       if (core_if->pti_enh_enable) {
+                               dwc_otg_iso_ep_start_buf_transfer(core_if, ep);
+                       } else {
+                               ep->cur_pkt_addr =
+                                   (ep->proc_buf_num) ? ep->xfer_buff1 : ep->
+                                   xfer_buff0;
+                               ep->cur_pkt_dma_addr =
+                                   (ep->proc_buf_num) ? ep->dma_addr1 : ep->
+                                   dma_addr0;
+                               dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
+                       }
+               }
+       } else {
+               ep->cur_pkt_addr =
+                   (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+               ep->cur_pkt_dma_addr =
+                   (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+               dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
+       }
+}
+
+/**
+ * This function stops transfer for an EP and
+ * resets the ep's variables. 
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_iso_ep_stop_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       depctl_data_t depctl = {.d32 = 0 };
+       volatile uint32_t *addr;
+
+       if (ep->is_in == 1) {
+               addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+       } else {
+               addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+       }
+
+       /* disable the ep */
+       depctl.d32 = DWC_READ_REG32(addr);
+
+       depctl.b.epdis = 1;
+       depctl.b.snak = 1;
+
+       DWC_WRITE_REG32(addr, depctl.d32);
+
+       if (core_if->dma_desc_enable &&
+           ep->iso_desc_addr && ep->iso_dma_desc_addr) {
+               dwc_otg_ep_free_desc_chain(ep->iso_desc_addr,
+                                          ep->iso_dma_desc_addr,
+                                          ep->desc_cnt * 2);
+       }
+
+       /* reset varibales */
+       ep->dma_addr0 = 0;
+       ep->dma_addr1 = 0;
+       ep->xfer_buff0 = 0;
+       ep->xfer_buff1 = 0;
+       ep->data_per_frame = 0;
+       ep->data_pattern_frame = 0;
+       ep->sync_frame = 0;
+       ep->buf_proc_intrvl = 0;
+       ep->bInterval = 0;
+       ep->proc_buf_num = 0;
+       ep->pkt_per_frm = 0;
+       ep->pkt_per_frm = 0;
+       ep->desc_cnt = 0;
+       ep->iso_desc_addr = 0;
+       ep->iso_dma_desc_addr = 0;
+}
+
+int dwc_otg_pcd_iso_ep_start(dwc_otg_pcd_t * pcd, void *ep_handle,
+                            uint8_t * buf0, uint8_t * buf1, dwc_dma_t dma0,
+                            dwc_dma_t dma1, int sync_frame, int dp_frame,
+                            int data_per_frame, int start_frame,
+                            int buf_proc_intrvl, void *req_handle,
+                            int atomic_alloc)
+{
+       dwc_otg_pcd_ep_t *ep;
+       dwc_irqflags_t flags = 0;
+       dwc_ep_t *dwc_ep;
+       int32_t frm_data;
+       dsts_data_t dsts;
+       dwc_otg_core_if_t *core_if;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+
+       if (!ep || !ep->desc || ep->dwc_ep.num == 0) {
+               DWC_WARN("bad ep\n");
+               return -DWC_E_INVALID;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+       core_if = GET_CORE_IF(pcd);
+       dwc_ep = &ep->dwc_ep;
+
+       if (ep->iso_req_handle) {
+               DWC_WARN("ISO request in progress\n");
+       }
+
+       dwc_ep->dma_addr0 = dma0;
+       dwc_ep->dma_addr1 = dma1;
+
+       dwc_ep->xfer_buff0 = buf0;
+       dwc_ep->xfer_buff1 = buf1;
+
+       dwc_ep->data_per_frame = data_per_frame;
+
+       /** @todo - pattern data support is to be implemented in the future */
+       dwc_ep->data_pattern_frame = dp_frame;
+       dwc_ep->sync_frame = sync_frame;
+
+       dwc_ep->buf_proc_intrvl = buf_proc_intrvl;
+
+       dwc_ep->bInterval = 1 << (ep->desc->bInterval - 1);
+
+       dwc_ep->proc_buf_num = 0;
+
+       dwc_ep->pkt_per_frm = 0;
+       frm_data = ep->dwc_ep.data_per_frame;
+       while (frm_data > 0) {
+               dwc_ep->pkt_per_frm++;
+               frm_data -= ep->dwc_ep.maxpacket;
+       }
+
+       dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+       if (start_frame == -1) {
+               dwc_ep->next_frame = dsts.b.soffn + 1;
+               if (dwc_ep->bInterval != 1) {
+                       dwc_ep->next_frame =
+                           dwc_ep->next_frame + (dwc_ep->bInterval - 1 -
+                                                 dwc_ep->next_frame %
+                                                 dwc_ep->bInterval);
+               }
+       } else {
+               dwc_ep->next_frame = start_frame;
+       }
+
+       if (!core_if->pti_enh_enable) {
+               dwc_ep->pkt_cnt =
+                   dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
+                   dwc_ep->bInterval;
+       } else {
+               dwc_ep->pkt_cnt =
+                   (dwc_ep->data_per_frame *
+                    (dwc_ep->buf_proc_intrvl / dwc_ep->bInterval)
+                    - 1 + dwc_ep->maxpacket) / dwc_ep->maxpacket;
+       }
+
+       if (core_if->dma_desc_enable) {
+               dwc_ep->desc_cnt =
+                   dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
+                   dwc_ep->bInterval;
+       }
+
+       if (atomic_alloc) {
+               dwc_ep->pkt_info =
+                   DWC_ALLOC_ATOMIC(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+       } else {
+               dwc_ep->pkt_info =
+                   DWC_ALLOC(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+       }
+       if (!dwc_ep->pkt_info) {
+               DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+               return -DWC_E_NO_MEMORY;
+       }
+       if (core_if->pti_enh_enable) {
+               dwc_memset(dwc_ep->pkt_info, 0,
+                          sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+       }
+
+       dwc_ep->cur_pkt = 0;
+       ep->iso_req_handle = req_handle;
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+       dwc_otg_iso_ep_start_transfer(core_if, dwc_ep);
+       return 0;
+}
+
+int dwc_otg_pcd_iso_ep_stop(dwc_otg_pcd_t * pcd, void *ep_handle,
+                           void *req_handle)
+{
+       dwc_irqflags_t flags = 0;
+       dwc_otg_pcd_ep_t *ep;
+       dwc_ep_t *dwc_ep;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+       if (!ep || !ep->desc || ep->dwc_ep.num == 0) {
+               DWC_WARN("bad ep\n");
+               return -DWC_E_INVALID;
+       }
+       dwc_ep = &ep->dwc_ep;
+
+       dwc_otg_iso_ep_stop_transfer(GET_CORE_IF(pcd), dwc_ep);
+
+       DWC_FREE(dwc_ep->pkt_info);
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+       if (ep->iso_req_handle != req_handle) {
+               DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+               return -DWC_E_INVALID;
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+       ep->iso_req_handle = 0;
+       return 0;
+}
+
+/**
+ * This function is used for perodical data exchnage between PCD and gadget drivers.
+ * for Isochronous EPs
+ *
+ *     - Every time a sync period completes this function is called to
+ *       perform data exchange between PCD and gadget
+ */
+void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
+                            void *req_handle)
+{
+       int i;
+       dwc_ep_t *dwc_ep;
+
+       dwc_ep = &ep->dwc_ep;
+
+       DWC_SPINUNLOCK(ep->pcd->lock);
+       pcd->fops->isoc_complete(pcd, ep->priv, ep->iso_req_handle,
+                                dwc_ep->proc_buf_num ^ 0x1);
+       DWC_SPINLOCK(ep->pcd->lock);
+
+       for (i = 0; i < dwc_ep->pkt_cnt; ++i) {
+               dwc_ep->pkt_info[i].status = 0;
+               dwc_ep->pkt_info[i].offset = 0;
+               dwc_ep->pkt_info[i].length = 0;
+       }
+}
+
+int dwc_otg_pcd_get_iso_packet_count(dwc_otg_pcd_t * pcd, void *ep_handle,
+                                    void *iso_req_handle)
+{
+       dwc_otg_pcd_ep_t *ep;
+       dwc_ep_t *dwc_ep;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+       if (!ep->desc || ep->dwc_ep.num == 0) {
+               DWC_WARN("bad ep\n");
+               return -DWC_E_INVALID;
+       }
+       dwc_ep = &ep->dwc_ep;
+
+       return dwc_ep->pkt_cnt;
+}
+
+void dwc_otg_pcd_get_iso_packet_params(dwc_otg_pcd_t * pcd, void *ep_handle,
+                                      void *iso_req_handle, int packet,
+                                      int *status, int *actual, int *offset)
+{
+       dwc_otg_pcd_ep_t *ep;
+       dwc_ep_t *dwc_ep;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+       if (!ep)
+               DWC_WARN("bad ep\n");
+
+       dwc_ep = &ep->dwc_ep;
+
+       *status = dwc_ep->pkt_info[packet].status;
+       *actual = dwc_ep->pkt_info[packet].length;
+       *offset = dwc_ep->pkt_info[packet].offset;
+}
+
+#endif /* DWC_EN_ISOC */
+
+static void dwc_otg_pcd_init_ep(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * pcd_ep,
+                               uint32_t is_in, uint32_t ep_num)
+{
+       /* Init EP structure */
+       pcd_ep->desc = 0;
+       pcd_ep->pcd = pcd;
+       pcd_ep->stopped = 1;
+       pcd_ep->queue_sof = 0;
+
+       /* Init DWC ep structure */
+       pcd_ep->dwc_ep.is_in = is_in;
+       pcd_ep->dwc_ep.num = ep_num;
+       pcd_ep->dwc_ep.active = 0;
+       pcd_ep->dwc_ep.tx_fifo_num = 0;
+       /* Control until ep is actvated */
+       pcd_ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+       pcd_ep->dwc_ep.maxpacket = MAX_PACKET_SIZE;
+       pcd_ep->dwc_ep.dma_addr = 0;
+       pcd_ep->dwc_ep.start_xfer_buff = 0;
+       pcd_ep->dwc_ep.xfer_buff = 0;
+       pcd_ep->dwc_ep.xfer_len = 0;
+       pcd_ep->dwc_ep.xfer_count = 0;
+       pcd_ep->dwc_ep.sent_zlp = 0;
+       pcd_ep->dwc_ep.total_len = 0;
+       pcd_ep->dwc_ep.desc_addr = 0;
+       pcd_ep->dwc_ep.dma_desc_addr = 0;
+       DWC_CIRCLEQ_INIT(&pcd_ep->queue);
+}
+
+/**
+ * Initialize ep's
+ */
+static void dwc_otg_pcd_reinit(dwc_otg_pcd_t * pcd)
+{
+       int i;
+       uint32_t hwcfg1;
+       dwc_otg_pcd_ep_t *ep;
+       int in_ep_cntr, out_ep_cntr;
+       uint32_t num_in_eps = (GET_CORE_IF(pcd))->dev_if->num_in_eps;
+       uint32_t num_out_eps = (GET_CORE_IF(pcd))->dev_if->num_out_eps;
+
+       /**
+        * Initialize the EP0 structure.
+        */
+       ep = &pcd->ep0;
+       dwc_otg_pcd_init_ep(pcd, ep, 0, 0);
+
+       in_ep_cntr = 0;
+       hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 3;
+       for (i = 1; in_ep_cntr < num_in_eps; i++) {
+               if ((hwcfg1 & 0x1) == 0) {
+                       dwc_otg_pcd_ep_t *ep = &pcd->in_ep[in_ep_cntr];
+                       in_ep_cntr++;
+                       /**
+                        * @todo NGS: Add direction to EP, based on contents
+                        * of HWCFG1.  Need a copy of HWCFG1 in pcd structure?
+                        * sprintf(";r
+                        */
+                       dwc_otg_pcd_init_ep(pcd, ep, 1 /* IN */ , i);
+
+                       DWC_CIRCLEQ_INIT(&ep->queue);
+               }
+               hwcfg1 >>= 2;
+       }
+
+       out_ep_cntr = 0;
+       hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 2;
+       for (i = 1; out_ep_cntr < num_out_eps; i++) {
+               if ((hwcfg1 & 0x1) == 0) {
+                       dwc_otg_pcd_ep_t *ep = &pcd->out_ep[out_ep_cntr];
+                       out_ep_cntr++;
+                       /**
+                        * @todo NGS: Add direction to EP, based on contents
+                        * of HWCFG1.  Need a copy of HWCFG1 in pcd structure?
+                        * sprintf(";r
+                        */
+                       dwc_otg_pcd_init_ep(pcd, ep, 0 /* OUT */ , i);
+                       DWC_CIRCLEQ_INIT(&ep->queue);
+               }
+               hwcfg1 >>= 2;
+       }
+
+       pcd->ep0state = EP0_DISCONNECT;
+       pcd->ep0.dwc_ep.maxpacket = MAX_EP0_SIZE;
+       pcd->ep0.dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+}
+
+/**
+ * This function is called when the SRP timer expires. The SRP should
+ * complete within 6 seconds.
+ */
+static void srp_timeout(void *ptr)
+{
+       gotgctl_data_t gotgctl;
+       dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+       volatile uint32_t *addr = &core_if->core_global_regs->gotgctl;
+
+       gotgctl.d32 = DWC_READ_REG32(addr);
+
+       core_if->srp_timer_started = 0;
+       
+       if (core_if->adp_enable) {
+               if (gotgctl.b.bsesvld == 0) {
+                       gpwrdn_data_t gpwrdn = {.d32 = 0 };
+                       DWC_PRINTF("SRP Timeout BSESSVLD = 0\n");
+                       /* Power off the core */
+                       if (core_if->power_down == 2) {
+                               gpwrdn.b.pwrdnswtch = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                core_global_regs->gpwrdn,
+                                                gpwrdn.d32, 0);
+                       }
+
+                       gpwrdn.d32 = 0;
+                       gpwrdn.b.pmuintsel = 1;
+                       gpwrdn.b.pmuactv = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+                                        gpwrdn.d32);
+                       dwc_otg_adp_probe_start(core_if);
+               } else {
+                       DWC_PRINTF("SRP Timeout BSESSVLD = 1\n");
+                       core_if->op_state = B_PERIPHERAL;
+                       dwc_otg_core_init(core_if);
+                       dwc_otg_enable_global_interrupts(core_if);
+                       cil_pcd_start(core_if);
+               }
+       }
+
+       if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) &&
+           (core_if->core_params->i2c_enable)) {
+               DWC_PRINTF("SRP Timeout\n");
+
+               if ((core_if->srp_success) && (gotgctl.b.bsesvld)) {
+                       if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+                               core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+                       }
+
+                       /* Clear Session Request */
+                       gotgctl.d32 = 0;
+                       gotgctl.b.sesreq = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gotgctl,
+                                        gotgctl.d32, 0);
+
+                       core_if->srp_success = 0;
+               } else {
+                       __DWC_ERROR("Device not connected/responding\n");
+                       gotgctl.b.sesreq = 0;
+                       DWC_WRITE_REG32(addr, gotgctl.d32);
+               }
+       } else if (gotgctl.b.sesreq) {
+               DWC_PRINTF("SRP Timeout\n");
+
+               __DWC_ERROR("Device not connected/responding\n");
+               gotgctl.b.sesreq = 0;
+               DWC_WRITE_REG32(addr, gotgctl.d32);
+       } else {
+               DWC_PRINTF(" SRP GOTGCTL=%0x\n", gotgctl.d32);
+       }
+}
+
+/**
+ * Tasklet
+ *
+ */
+extern void start_next_request(dwc_otg_pcd_ep_t * ep);
+
+static void start_xfer_tasklet_func(void *data)
+{
+       dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) data;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+       int i;
+       depctl_data_t diepctl;
+
+       DWC_DEBUGPL(DBG_PCDV, "Start xfer tasklet\n");
+
+       diepctl.d32 = DWC_READ_REG32(&core_if->dev_if->in_ep_regs[0]->diepctl);
+
+       if (pcd->ep0.queue_sof) {
+               pcd->ep0.queue_sof = 0;
+               start_next_request(&pcd->ep0);
+               // break;
+       }
+
+       for (i = 0; i < core_if->dev_if->num_in_eps; i++) {
+               depctl_data_t diepctl;
+               diepctl.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl);
+
+               if (pcd->in_ep[i].queue_sof) {
+                       pcd->in_ep[i].queue_sof = 0;
+                       start_next_request(&pcd->in_ep[i]);
+                       // break;
+               }
+       }
+
+       return;
+}
+
+/**
+ * This function initialized the PCD portion of the driver.
+ *
+ */
+dwc_otg_pcd_t *dwc_otg_pcd_init(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_pcd_t *pcd = NULL;
+       dwc_otg_dev_if_t *dev_if;
+       int i;
+
+       /*
+        * Allocate PCD structure
+        */
+       pcd = DWC_ALLOC(sizeof(dwc_otg_pcd_t));
+
+       if (pcd == NULL) {
+               return NULL;
+       }
+
+       pcd->lock = DWC_SPINLOCK_ALLOC();
+        DWC_DEBUGPL(DBG_HCDV, "Init of PCD %p given core_if %p\n",
+                    pcd, core_if);//GRAYG
+       if (!pcd->lock) {
+               DWC_ERROR("Could not allocate lock for pcd");
+               DWC_FREE(pcd);
+               return NULL;
+       }
+       /* Set core_if's lock pointer to hcd->lock */
+       core_if->lock = pcd->lock;
+       pcd->core_if = core_if;
+
+       dev_if = core_if->dev_if;
+       dev_if->isoc_ep = NULL;
+
+       if (core_if->hwcfg4.b.ded_fifo_en) {
+               DWC_PRINTF("Dedicated Tx FIFOs mode\n");
+       } else {
+               DWC_PRINTF("Shared Tx FIFO mode\n");
+       }
+
+       /*
+        * Initialized the Core for Device mode here if there is nod ADP support. 
+        * Otherwise it will be done later in dwc_otg_adp_start routine.
+        */                                                                                                                                                              
+       if (dwc_otg_is_device_mode(core_if) /*&& !core_if->adp_enable*/) {
+               dwc_otg_core_dev_init(core_if);
+       }
+
+       /*
+        * Register the PCD Callbacks.
+        */
+       dwc_otg_cil_register_pcd_callbacks(core_if, &pcd_callbacks, pcd);
+
+       /*
+        * Initialize the DMA buffer for SETUP packets
+        */
+       if (GET_CORE_IF(pcd)->dma_enable) {
+               pcd->setup_pkt =
+                   DWC_DMA_ALLOC(sizeof(*pcd->setup_pkt) * 5,
+                                 &pcd->setup_pkt_dma_handle);
+               if (pcd->setup_pkt == NULL) {
+                       DWC_FREE(pcd);
+                       return NULL;
+               }
+
+               pcd->status_buf =
+                   DWC_DMA_ALLOC(sizeof(uint16_t),
+                                 &pcd->status_buf_dma_handle);
+               if (pcd->status_buf == NULL) {
+                       DWC_DMA_FREE(sizeof(*pcd->setup_pkt) * 5,
+                                    pcd->setup_pkt, pcd->setup_pkt_dma_handle);
+                       DWC_FREE(pcd);
+                       return NULL;
+               }
+
+               if (GET_CORE_IF(pcd)->dma_desc_enable) {
+                       dev_if->setup_desc_addr[0] =
+                           dwc_otg_ep_alloc_desc_chain
+                           (&dev_if->dma_setup_desc_addr[0], 1);
+                       dev_if->setup_desc_addr[1] =
+                           dwc_otg_ep_alloc_desc_chain
+                           (&dev_if->dma_setup_desc_addr[1], 1);
+                       dev_if->in_desc_addr =
+                           dwc_otg_ep_alloc_desc_chain
+                           (&dev_if->dma_in_desc_addr, 1);
+                       dev_if->out_desc_addr =
+                           dwc_otg_ep_alloc_desc_chain
+                           (&dev_if->dma_out_desc_addr, 1);
+                       pcd->data_terminated = 0;
+
+                       if (dev_if->setup_desc_addr[0] == 0
+                           || dev_if->setup_desc_addr[1] == 0
+                           || dev_if->in_desc_addr == 0
+                           || dev_if->out_desc_addr == 0) {
+
+                               if (dev_if->out_desc_addr)
+                                       dwc_otg_ep_free_desc_chain
+                                           (dev_if->out_desc_addr,
+                                            dev_if->dma_out_desc_addr, 1);
+                               if (dev_if->in_desc_addr)
+                                       dwc_otg_ep_free_desc_chain
+                                           (dev_if->in_desc_addr,
+                                            dev_if->dma_in_desc_addr, 1);
+                               if (dev_if->setup_desc_addr[1])
+                                       dwc_otg_ep_free_desc_chain
+                                           (dev_if->setup_desc_addr[1],
+                                            dev_if->dma_setup_desc_addr[1], 1);
+                               if (dev_if->setup_desc_addr[0])
+                                       dwc_otg_ep_free_desc_chain
+                                           (dev_if->setup_desc_addr[0],
+                                            dev_if->dma_setup_desc_addr[0], 1);
+
+                               DWC_DMA_FREE(sizeof(*pcd->setup_pkt) * 5,
+                                            pcd->setup_pkt,
+                                            pcd->setup_pkt_dma_handle);
+                               DWC_DMA_FREE(sizeof(*pcd->status_buf),
+                                            pcd->status_buf,
+                                            pcd->status_buf_dma_handle);
+
+                               DWC_FREE(pcd);
+
+                               return NULL;
+                       }
+               }
+       } else {
+               pcd->setup_pkt = DWC_ALLOC(sizeof(*pcd->setup_pkt) * 5);
+               if (pcd->setup_pkt == NULL) {
+                       DWC_FREE(pcd);
+                       return NULL;
+               }
+
+               pcd->status_buf = DWC_ALLOC(sizeof(uint16_t));
+               if (pcd->status_buf == NULL) {
+                       DWC_FREE(pcd->setup_pkt);
+                       DWC_FREE(pcd);
+                       return NULL;
+               }
+       }
+
+       dwc_otg_pcd_reinit(pcd);
+
+       /* Allocate the cfi object for the PCD */
+#ifdef DWC_UTE_CFI
+       pcd->cfi = DWC_ALLOC(sizeof(cfiobject_t));
+       if (NULL == pcd->cfi)
+               goto fail;
+       if (init_cfi(pcd->cfi)) {
+               CFI_INFO("%s: Failed to init the CFI object\n", __func__);
+               goto fail;
+       }
+#endif
+
+       /* Initialize tasklets */
+       pcd->start_xfer_tasklet = DWC_TASK_ALLOC("xfer_tasklet",
+                                                start_xfer_tasklet_func, pcd);
+       pcd->test_mode_tasklet = DWC_TASK_ALLOC("test_mode_tasklet",
+                                               do_test_mode, pcd);
+
+       /* Initialize SRP timer */
+       core_if->srp_timer = DWC_TIMER_ALLOC("SRP TIMER", srp_timeout, core_if);
+       
+       if (core_if->core_params->dev_out_nak) {
+               /** 
+               * Initialize xfer timeout timer. Implemented for
+               * 2.93a feature "Device DDMA OUT NAK Enhancement"
+               */
+               for(i = 0; i < MAX_EPS_CHANNELS; i++) {
+                       pcd->core_if->ep_xfer_timer[i] =
+                               DWC_TIMER_ALLOC("ep timer", ep_xfer_timeout,
+                               &pcd->core_if->ep_xfer_info[i]);
+               }
+       }
+       
+       return pcd;
+#ifdef DWC_UTE_CFI
+fail:
+#endif
+       if (pcd->setup_pkt)
+               DWC_FREE(pcd->setup_pkt);
+       if (pcd->status_buf)
+               DWC_FREE(pcd->status_buf);
+#ifdef DWC_UTE_CFI
+       if (pcd->cfi)
+               DWC_FREE(pcd->cfi);
+#endif
+       if (pcd)
+               DWC_FREE(pcd);
+       return NULL;
+
+}
+
+/**
+ * Remove PCD specific data
+ */
+void dwc_otg_pcd_remove(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+       int i;
+       if (pcd->core_if->core_params->dev_out_nak) {
+               for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+                       DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[i]);
+                       pcd->core_if->ep_xfer_info[i].state = 0;
+               }
+       }
+
+       if (GET_CORE_IF(pcd)->dma_enable) {
+               DWC_DMA_FREE(sizeof(*pcd->setup_pkt) * 5, pcd->setup_pkt,
+                            pcd->setup_pkt_dma_handle);
+               DWC_DMA_FREE(sizeof(uint16_t), pcd->status_buf,
+                            pcd->status_buf_dma_handle);
+               if (GET_CORE_IF(pcd)->dma_desc_enable) {
+                       dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[0],
+                                                  dev_if->dma_setup_desc_addr
+                                                  [0], 1);
+                       dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[1],
+                                                  dev_if->dma_setup_desc_addr
+                                                  [1], 1);
+                       dwc_otg_ep_free_desc_chain(dev_if->in_desc_addr,
+                                                  dev_if->dma_in_desc_addr, 1);
+                       dwc_otg_ep_free_desc_chain(dev_if->out_desc_addr,
+                                                  dev_if->dma_out_desc_addr,
+                                                  1);
+               }
+       } else {
+               DWC_FREE(pcd->setup_pkt);
+               DWC_FREE(pcd->status_buf);
+       }
+       DWC_SPINLOCK_FREE(pcd->lock);
+       /* Set core_if's lock pointer to NULL */
+       pcd->core_if->lock = NULL;
+
+       DWC_TASK_FREE(pcd->start_xfer_tasklet);
+       DWC_TASK_FREE(pcd->test_mode_tasklet);
+       if (pcd->core_if->core_params->dev_out_nak) {
+               for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+                       if (pcd->core_if->ep_xfer_timer[i]) {
+                                       DWC_TIMER_FREE(pcd->core_if->ep_xfer_timer[i]);
+                       }
+               }
+       }
+
+/* Release the CFI object's dynamic memory */
+#ifdef DWC_UTE_CFI
+       if (pcd->cfi->ops.release) {
+               pcd->cfi->ops.release(pcd->cfi);
+       }
+#endif
+
+       DWC_FREE(pcd);
+}
+
+/**
+ * Returns whether registered pcd is dual speed or not
+ */
+uint32_t dwc_otg_pcd_is_dualspeed(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+       if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) ||
+           ((core_if->hwcfg2.b.hs_phy_type == 2) &&
+            (core_if->hwcfg2.b.fs_phy_type == 1) &&
+            (core_if->core_params->ulpi_fs_ls))) {
+               return 0;
+       }
+
+       return 1;
+}
+
+/**
+ * Returns whether registered pcd is OTG capable or not
+ */
+uint32_t dwc_otg_pcd_is_otg(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       gusbcfg_data_t usbcfg = {.d32 = 0 };
+
+       usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+       if (!usbcfg.b.srpcap || !usbcfg.b.hnpcap) {
+               return 0;
+       }
+
+       return 1;
+}
+
+/**
+ * This function assigns periodic Tx FIFO to an periodic EP
+ * in shared Tx FIFO mode
+ */
+static uint32_t assign_tx_fifo(dwc_otg_core_if_t * core_if)
+{
+       uint32_t TxMsk = 1;
+       int i;
+
+       for (i = 0; i < core_if->hwcfg4.b.num_in_eps; ++i) {
+               if ((TxMsk & core_if->tx_msk) == 0) {
+                       core_if->tx_msk |= TxMsk;
+                       return i + 1;
+               }
+               TxMsk <<= 1;
+       }
+       return 0;
+}
+
+/**
+ * This function assigns periodic Tx FIFO to an periodic EP
+ * in shared Tx FIFO mode
+ */
+static uint32_t assign_perio_tx_fifo(dwc_otg_core_if_t * core_if)
+{
+       uint32_t PerTxMsk = 1;
+       int i;
+       for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; ++i) {
+               if ((PerTxMsk & core_if->p_tx_msk) == 0) {
+                       core_if->p_tx_msk |= PerTxMsk;
+                       return i + 1;
+               }
+               PerTxMsk <<= 1;
+       }
+       return 0;
+}
+
+/**
+ * This function releases periodic Tx FIFO
+ * in shared Tx FIFO mode
+ */
+static void release_perio_tx_fifo(dwc_otg_core_if_t * core_if,
+                                 uint32_t fifo_num)
+{
+       core_if->p_tx_msk =
+           (core_if->p_tx_msk & (1 << (fifo_num - 1))) ^ core_if->p_tx_msk;
+}
+
+/**
+ * This function releases periodic Tx FIFO
+ * in shared Tx FIFO mode
+ */
+static void release_tx_fifo(dwc_otg_core_if_t * core_if, uint32_t fifo_num)
+{
+       core_if->tx_msk =
+           (core_if->tx_msk & (1 << (fifo_num - 1))) ^ core_if->tx_msk;
+}
+
+/**
+ * This function is being called from gadget 
+ * to enable PCD endpoint.
+ */
+int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t * pcd,
+                         const uint8_t * ep_desc, void *usb_ep)
+{
+       int num, dir;
+       dwc_otg_pcd_ep_t *ep = NULL;
+       const usb_endpoint_descriptor_t *desc;
+       dwc_irqflags_t flags;
+       fifosize_data_t dptxfsiz = {.d32 = 0 };
+       gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+       gdfifocfg_data_t gdfifocfgbase = {.d32 = 0 };
+       int retval = 0;
+       int i, epcount;
+
+       desc = (const usb_endpoint_descriptor_t *)ep_desc;
+
+       if (!desc) {
+               pcd->ep0.priv = usb_ep;
+               ep = &pcd->ep0;
+               retval = -DWC_E_INVALID;
+               goto out;
+       }
+
+       num = UE_GET_ADDR(desc->bEndpointAddress);
+       dir = UE_GET_DIR(desc->bEndpointAddress);
+
+       if (!desc->wMaxPacketSize) {
+               DWC_WARN("bad maxpacketsize\n");
+               retval = -DWC_E_INVALID;
+               goto out;
+       }
+
+       if (dir == UE_DIR_IN) {
+               epcount = pcd->core_if->dev_if->num_in_eps;
+               for (i = 0; i < epcount; i++) {
+                       if (num == pcd->in_ep[i].dwc_ep.num) {
+                               ep = &pcd->in_ep[i];
+                               break;
+                       }
+               }
+       } else {
+               epcount = pcd->core_if->dev_if->num_out_eps;
+               for (i = 0; i < epcount; i++) {
+                       if (num == pcd->out_ep[i].dwc_ep.num) {
+                               ep = &pcd->out_ep[i];
+                               break;
+                       }
+               }
+       }
+
+       if (!ep) {
+               DWC_WARN("bad address\n");
+               retval = -DWC_E_INVALID;
+               goto out;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+       ep->desc = desc;
+       ep->priv = usb_ep;
+
+       /*
+        * Activate the EP
+        */
+       ep->stopped = 0;
+
+       ep->dwc_ep.is_in = (dir == UE_DIR_IN);
+       ep->dwc_ep.maxpacket = UGETW(desc->wMaxPacketSize);
+
+       ep->dwc_ep.type = desc->bmAttributes & UE_XFERTYPE;
+
+       if (ep->dwc_ep.is_in) {
+               if (!GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+                       ep->dwc_ep.tx_fifo_num = 0;
+
+                       if (ep->dwc_ep.type == UE_ISOCHRONOUS) {
+                               /*
+                                * if ISOC EP then assign a Periodic Tx FIFO.
+                                */
+                               ep->dwc_ep.tx_fifo_num =
+                                   assign_perio_tx_fifo(GET_CORE_IF(pcd));
+                       }
+               } else {
+                       /*
+                        * if Dedicated FIFOs mode is on then assign a Tx FIFO.
+                        */
+                       ep->dwc_ep.tx_fifo_num =
+                           assign_tx_fifo(GET_CORE_IF(pcd));
+               }
+
+               /* Calculating EP info controller base address */
+               if (ep->dwc_ep.tx_fifo_num
+                   && GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+                       gdfifocfg.d32 =
+                           DWC_READ_REG32(&GET_CORE_IF(pcd)->
+                                          core_global_regs->gdfifocfg);
+                       gdfifocfgbase.d32 = gdfifocfg.d32 >> 16;
+                       dptxfsiz.d32 =
+                           (DWC_READ_REG32
+                            (&GET_CORE_IF(pcd)->core_global_regs->
+                             dtxfsiz[ep->dwc_ep.tx_fifo_num - 1]) >> 16);
+                       gdfifocfg.b.epinfobase =
+                           gdfifocfgbase.d32 + dptxfsiz.d32;
+                       if (GET_CORE_IF(pcd)->snpsid <= OTG_CORE_REV_2_94a) {
+                               DWC_WRITE_REG32(&GET_CORE_IF(pcd)->
+                                               core_global_regs->gdfifocfg,
+                                               gdfifocfg.d32);
+                       }
+               }
+       }
+       /* Set initial data PID. */
+       if (ep->dwc_ep.type == UE_BULK) {
+               ep->dwc_ep.data_pid_start = 0;
+       }
+
+       /* Alloc DMA Descriptors */
+       if (GET_CORE_IF(pcd)->dma_desc_enable) {
+#ifndef DWC_UTE_PER_IO
+               if (ep->dwc_ep.type != UE_ISOCHRONOUS) {
+#endif
+                       ep->dwc_ep.desc_addr =
+                           dwc_otg_ep_alloc_desc_chain(&ep->
+                                                       dwc_ep.dma_desc_addr,
+                                                       MAX_DMA_DESC_CNT);
+                       if (!ep->dwc_ep.desc_addr) {
+                               DWC_WARN("%s, can't allocate DMA descriptor\n",
+                                        __func__);
+                               retval = -DWC_E_SHUTDOWN;
+                               DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+                               goto out;
+                       }
+#ifndef DWC_UTE_PER_IO
+               }
+#endif
+       }
+
+       DWC_DEBUGPL(DBG_PCD, "Activate %s: type=%d, mps=%d desc=%p\n",
+                   (ep->dwc_ep.is_in ? "IN" : "OUT"),
+                   ep->dwc_ep.type, ep->dwc_ep.maxpacket, ep->desc);
+#ifdef DWC_UTE_PER_IO
+       ep->dwc_ep.xiso_bInterval = 1 << (ep->desc->bInterval - 1);
+#endif
+       if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+               ep->dwc_ep.bInterval = 1 << (ep->desc->bInterval - 1);
+               ep->dwc_ep.frame_num = 0xFFFFFFFF;
+       }               
+
+       dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
+
+#ifdef DWC_UTE_CFI
+       if (pcd->cfi->ops.ep_enable) {
+               pcd->cfi->ops.ep_enable(pcd->cfi, pcd, ep);
+       }
+#endif
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+out:
+       return retval;
+}
+
+/**
+ * This function is being called from gadget 
+ * to disable PCD endpoint.
+ */
+int dwc_otg_pcd_ep_disable(dwc_otg_pcd_t * pcd, void *ep_handle)
+{
+       dwc_otg_pcd_ep_t *ep;
+       dwc_irqflags_t flags;
+       dwc_otg_dev_dma_desc_t *desc_addr;
+       dwc_dma_t dma_desc_addr;
+       gdfifocfg_data_t gdfifocfgbase = {.d32 = 0 };
+       gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+       fifosize_data_t dptxfsiz = {.d32 = 0 };
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+
+       if (!ep || !ep->desc) {
+               DWC_DEBUGPL(DBG_PCD, "bad ep address\n");
+               return -DWC_E_INVALID;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+       dwc_otg_request_nuke(ep);
+
+       dwc_otg_ep_deactivate(GET_CORE_IF(pcd), &ep->dwc_ep);
+       if (pcd->core_if->core_params->dev_out_nak) {
+               DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[ep->dwc_ep.num]);
+               pcd->core_if->ep_xfer_info[ep->dwc_ep.num].state = 0;
+       }
+       ep->desc = NULL;
+       ep->stopped = 1;
+
+       gdfifocfg.d32 =
+           DWC_READ_REG32(&GET_CORE_IF(pcd)->core_global_regs->gdfifocfg);
+       gdfifocfgbase.d32 = gdfifocfg.d32 >> 16;
+
+       if (ep->dwc_ep.is_in) {
+               if (GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+                       /* Flush the Tx FIFO */
+                       dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd),
+                                             ep->dwc_ep.tx_fifo_num);
+               }
+               release_perio_tx_fifo(GET_CORE_IF(pcd), ep->dwc_ep.tx_fifo_num);
+               release_tx_fifo(GET_CORE_IF(pcd), ep->dwc_ep.tx_fifo_num);
+               if (GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+                       /* Decreasing EPinfo Base Addr */
+                       dptxfsiz.d32 =
+                           (DWC_READ_REG32
+                            (&GET_CORE_IF(pcd)->
+                               core_global_regs->dtxfsiz[ep->dwc_ep.tx_fifo_num-1]) >> 16);
+                       gdfifocfg.b.epinfobase = gdfifocfgbase.d32 - dptxfsiz.d32;
+                       if (GET_CORE_IF(pcd)->snpsid <= OTG_CORE_REV_2_94a) {
+                               DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gdfifocfg,
+                                       gdfifocfg.d32);
+                       }
+               }
+       }
+
+       /* Free DMA Descriptors */
+       if (GET_CORE_IF(pcd)->dma_desc_enable) {
+               if (ep->dwc_ep.type != UE_ISOCHRONOUS) {
+                       desc_addr = ep->dwc_ep.desc_addr;
+                       dma_desc_addr = ep->dwc_ep.dma_desc_addr;
+
+                       /* Cannot call dma_free_coherent() with IRQs disabled */
+                       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+                       dwc_otg_ep_free_desc_chain(desc_addr, dma_desc_addr,
+                                                  MAX_DMA_DESC_CNT);
+
+                       goto out_unlocked;
+               }
+       }
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+out_unlocked:
+       DWC_DEBUGPL(DBG_PCD, "%d %s disabled\n", ep->dwc_ep.num,
+                   ep->dwc_ep.is_in ? "IN" : "OUT");
+       return 0;
+
+}
+
+/******************************************************************************/
+#ifdef DWC_UTE_PER_IO
+
+/**
+ * Free the request and its extended parts
+ *
+ */
+void dwc_pcd_xiso_ereq_free(dwc_otg_pcd_ep_t * ep, dwc_otg_pcd_request_t * req)
+{
+       DWC_FREE(req->ext_req.per_io_frame_descs);
+       DWC_FREE(req);
+}
+
+/**
+ * Start the next request in the endpoint's queue.
+ *
+ */
+int dwc_otg_pcd_xiso_start_next_request(dwc_otg_pcd_t * pcd,
+                                       dwc_otg_pcd_ep_t * ep)
+{
+       int i;
+       dwc_otg_pcd_request_t *req = NULL;
+       dwc_ep_t *dwcep = NULL;
+       struct dwc_iso_xreq_port *ereq = NULL;
+       struct dwc_iso_pkt_desc_port *ddesc_iso;
+       uint16_t nat;
+       depctl_data_t diepctl;
+
+       dwcep = &ep->dwc_ep;
+
+       if (dwcep->xiso_active_xfers > 0) {
+#if 0  //Disable this to decrease s/w overhead that is crucial for Isoc transfers
+               DWC_WARN("There are currently active transfers for EP%d \
+                               (active=%d; queued=%d)", dwcep->num, dwcep->xiso_active_xfers, 
+                               dwcep->xiso_queued_xfers);
+#endif
+               return 0;
+       }
+
+       nat = UGETW(ep->desc->wMaxPacketSize);
+       nat = (nat >> 11) & 0x03;
+
+       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+               ereq = &req->ext_req;
+               ep->stopped = 0;
+
+               /* Get the frame number */
+               dwcep->xiso_frame_num =
+                   dwc_otg_get_frame_number(GET_CORE_IF(pcd));
+               DWC_DEBUG("FRM_NUM=%d", dwcep->xiso_frame_num);
+
+               ddesc_iso = ereq->per_io_frame_descs;
+
+               if (dwcep->is_in) {
+                       /* Setup DMA Descriptor chain for IN Isoc request */
+                       for (i = 0; i < ereq->pio_pkt_count; i++) {
+                               //if ((i % (nat + 1)) == 0)
+                               if ( i > 0 )
+                                       dwcep->xiso_frame_num =
+                                           (dwcep->xiso_bInterval +
+                                                                               dwcep->xiso_frame_num) & 0x3FFF;
+                               dwcep->desc_addr[i].buf =
+                                   req->dma + ddesc_iso[i].offset;
+                               dwcep->desc_addr[i].status.b_iso_in.txbytes =
+                                   ddesc_iso[i].length;
+                               dwcep->desc_addr[i].status.b_iso_in.framenum =
+                                   dwcep->xiso_frame_num;
+                               dwcep->desc_addr[i].status.b_iso_in.bs =
+                                   BS_HOST_READY;
+                               dwcep->desc_addr[i].status.b_iso_in.txsts = 0;
+                               dwcep->desc_addr[i].status.b_iso_in.sp =
+                                   (ddesc_iso[i].length %
+                                    dwcep->maxpacket) ? 1 : 0;
+                               dwcep->desc_addr[i].status.b_iso_in.ioc = 0;
+                               dwcep->desc_addr[i].status.b_iso_in.pid = nat + 1;
+                               dwcep->desc_addr[i].status.b_iso_in.l = 0;
+
+                               /* Process the last descriptor */
+                               if (i == ereq->pio_pkt_count - 1) {
+                                       dwcep->desc_addr[i].status.b_iso_in.ioc = 1;
+                                       dwcep->desc_addr[i].status.b_iso_in.l = 1;
+                               }
+                       }
+
+                       /* Setup and start the transfer for this endpoint */
+                       dwcep->xiso_active_xfers++;
+                       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->dev_if->
+                                       in_ep_regs[dwcep->num]->diepdma,
+                                       dwcep->dma_desc_addr);
+                       diepctl.d32 = 0;
+                       diepctl.b.epena = 1;
+                       diepctl.b.cnak = 1;
+                       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->dev_if->
+                                        in_ep_regs[dwcep->num]->diepctl, 0,
+                                        diepctl.d32);
+               } else {
+                       /* Setup DMA Descriptor chain for OUT Isoc request */
+                       for (i = 0; i < ereq->pio_pkt_count; i++) {
+                               //if ((i % (nat + 1)) == 0)
+                               dwcep->xiso_frame_num = (dwcep->xiso_bInterval + 
+                                                                               dwcep->xiso_frame_num) & 0x3FFF;
+                               dwcep->desc_addr[i].buf =
+                                   req->dma + ddesc_iso[i].offset;
+                               dwcep->desc_addr[i].status.b_iso_out.rxbytes =
+                                   ddesc_iso[i].length;
+                               dwcep->desc_addr[i].status.b_iso_out.framenum =
+                                   dwcep->xiso_frame_num;
+                               dwcep->desc_addr[i].status.b_iso_out.bs =
+                                   BS_HOST_READY;
+                               dwcep->desc_addr[i].status.b_iso_out.rxsts = 0;
+                               dwcep->desc_addr[i].status.b_iso_out.sp =
+                                   (ddesc_iso[i].length %
+                                    dwcep->maxpacket) ? 1 : 0;
+                               dwcep->desc_addr[i].status.b_iso_out.ioc = 0;
+                               dwcep->desc_addr[i].status.b_iso_out.pid = nat + 1;
+                               dwcep->desc_addr[i].status.b_iso_out.l = 0;
+                               
+                               /* Process the last descriptor */
+                               if (i == ereq->pio_pkt_count - 1) {
+                                       dwcep->desc_addr[i].status.b_iso_out.ioc = 1;
+                                       dwcep->desc_addr[i].status.b_iso_out.l = 1;
+                               }                       
+                       }
+                       
+                       /* Setup and start the transfer for this endpoint */
+                       dwcep->xiso_active_xfers++;
+                       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->
+                                       dev_if->out_ep_regs[dwcep->num]->
+                                       doepdma, dwcep->dma_desc_addr);
+                       diepctl.d32 = 0;
+                       diepctl.b.epena = 1;
+                       diepctl.b.cnak = 1;
+                       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
+                                        dev_if->out_ep_regs[dwcep->num]->
+                                        doepctl, 0, diepctl.d32);
+               }
+
+       } else {
+               ep->stopped = 1;
+       }
+
+       return 0;
+}
+
+/**
+ *     - Remove the request from the queue
+ */
+void complete_xiso_ep(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_otg_pcd_request_t *req = NULL;
+       struct dwc_iso_xreq_port *ereq = NULL;
+       struct dwc_iso_pkt_desc_port *ddesc_iso = NULL;
+       dwc_ep_t *dwcep = NULL;
+       int i;
+
+       //DWC_DEBUG();
+       dwcep = &ep->dwc_ep;
+
+       /* Get the first pending request from the queue */
+       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+               if (!req) {
+                       DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
+                       return;
+               }
+               dwcep->xiso_active_xfers--;
+               dwcep->xiso_queued_xfers--;
+               /* Remove this request from the queue */
+               DWC_CIRCLEQ_REMOVE_INIT(&ep->queue, req, queue_entry);
+       } else {
+               DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
+               return;
+       }
+
+       ep->stopped = 1;
+       ereq = &req->ext_req;
+       ddesc_iso = ereq->per_io_frame_descs;
+
+       if (dwcep->xiso_active_xfers < 0) {
+               DWC_WARN("EP#%d (xiso_active_xfers=%d)", dwcep->num,
+                        dwcep->xiso_active_xfers);
+       }
+
+       /* Fill the Isoc descs of portable extended req from dma descriptors */
+       for (i = 0; i < ereq->pio_pkt_count; i++) {
+               if (dwcep->is_in) {     /* IN endpoints */
+                       ddesc_iso[i].actual_length = ddesc_iso[i].length -
+                           dwcep->desc_addr[i].status.b_iso_in.txbytes;
+                       ddesc_iso[i].status =
+                           dwcep->desc_addr[i].status.b_iso_in.txsts;
+               } else {        /* OUT endpoints */
+                       ddesc_iso[i].actual_length = ddesc_iso[i].length -
+                           dwcep->desc_addr[i].status.b_iso_out.rxbytes;
+                       ddesc_iso[i].status =
+                           dwcep->desc_addr[i].status.b_iso_out.rxsts;
+               }
+       }
+
+       DWC_SPINUNLOCK(ep->pcd->lock);
+
+       /* Call the completion function in the non-portable logic */
+       ep->pcd->fops->xisoc_complete(ep->pcd, ep->priv, req->priv, 0,
+                                     &req->ext_req);
+
+       DWC_SPINLOCK(ep->pcd->lock);
+
+       /* Free the request - specific freeing needed for extended request object */
+       dwc_pcd_xiso_ereq_free(ep, req);
+
+       /* Start the next request */
+       dwc_otg_pcd_xiso_start_next_request(ep->pcd, ep);
+
+       return;
+}
+
+/**
+ * Create and initialize the Isoc pkt descriptors of the extended request.
+ *
+ */
+static int dwc_otg_pcd_xiso_create_pkt_descs(dwc_otg_pcd_request_t * req,
+                                            void *ereq_nonport,
+                                            int atomic_alloc)
+{
+       struct dwc_iso_xreq_port *ereq = NULL;
+       struct dwc_iso_xreq_port *req_mapped = NULL;
+       struct dwc_iso_pkt_desc_port *ipds = NULL;      /* To be created in this function */
+       uint32_t pkt_count;
+       int i;
+
+       ereq = &req->ext_req;
+       req_mapped = (struct dwc_iso_xreq_port *)ereq_nonport;
+       pkt_count = req_mapped->pio_pkt_count;
+
+       /* Create the isoc descs */
+       if (atomic_alloc) {
+               ipds = DWC_ALLOC_ATOMIC(sizeof(*ipds) * pkt_count);
+       } else {
+               ipds = DWC_ALLOC(sizeof(*ipds) * pkt_count);
+       }
+
+       if (!ipds) {
+               DWC_ERROR("Failed to allocate isoc descriptors");
+               return -DWC_E_NO_MEMORY;
+       }
+
+       /* Initialize the extended request fields */
+       ereq->per_io_frame_descs = ipds;
+       ereq->error_count = 0;
+       ereq->pio_alloc_pkt_count = pkt_count;
+       ereq->pio_pkt_count = pkt_count;
+       ereq->tr_sub_flags = req_mapped->tr_sub_flags;
+
+       /* Init the Isoc descriptors */
+       for (i = 0; i < pkt_count; i++) {
+               ipds[i].length = req_mapped->per_io_frame_descs[i].length;
+               ipds[i].offset = req_mapped->per_io_frame_descs[i].offset;
+               ipds[i].status = req_mapped->per_io_frame_descs[i].status;      /* 0 */
+               ipds[i].actual_length =
+                   req_mapped->per_io_frame_descs[i].actual_length;
+       }
+
+       return 0;
+}
+
+static void prn_ext_request(struct dwc_iso_xreq_port *ereq)
+{
+       struct dwc_iso_pkt_desc_port *xfd = NULL;
+       int i;
+
+       DWC_DEBUG("per_io_frame_descs=%p", ereq->per_io_frame_descs);
+       DWC_DEBUG("tr_sub_flags=%d", ereq->tr_sub_flags);
+       DWC_DEBUG("error_count=%d", ereq->error_count);
+       DWC_DEBUG("pio_alloc_pkt_count=%d", ereq->pio_alloc_pkt_count);
+       DWC_DEBUG("pio_pkt_count=%d", ereq->pio_pkt_count);
+       DWC_DEBUG("res=%d", ereq->res);
+
+       for (i = 0; i < ereq->pio_pkt_count; i++) {
+               xfd = &ereq->per_io_frame_descs[0];
+               DWC_DEBUG("FD #%d", i);
+
+               DWC_DEBUG("xfd->actual_length=%d", xfd->actual_length);
+               DWC_DEBUG("xfd->length=%d", xfd->length);
+               DWC_DEBUG("xfd->offset=%d", xfd->offset);
+               DWC_DEBUG("xfd->status=%d", xfd->status);
+       }
+}
+
+/**
+ *
+ */
+int dwc_otg_pcd_xiso_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+                             uint8_t * buf, dwc_dma_t dma_buf, uint32_t buflen,
+                             int zero, void *req_handle, int atomic_alloc,
+                             void *ereq_nonport)
+{
+       dwc_otg_pcd_request_t *req = NULL;
+       dwc_otg_pcd_ep_t *ep;
+       dwc_irqflags_t flags;
+       int res;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+       if (!ep) {
+               DWC_WARN("bad ep\n");
+               return -DWC_E_INVALID;
+       }
+
+       /* We support this extension only for DDMA mode */
+       if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC)
+               if (!GET_CORE_IF(pcd)->dma_desc_enable)
+                       return -DWC_E_INVALID;
+
+       /* Create a dwc_otg_pcd_request_t object */
+       if (atomic_alloc) {
+               req = DWC_ALLOC_ATOMIC(sizeof(*req));
+       } else {
+               req = DWC_ALLOC(sizeof(*req));
+       }
+
+       if (!req) {
+               return -DWC_E_NO_MEMORY;
+       }
+
+       /* Create the Isoc descs for this request which shall be the exact match
+        * of the structure sent to us from the non-portable logic */
+       res =
+           dwc_otg_pcd_xiso_create_pkt_descs(req, ereq_nonport, atomic_alloc);
+       if (res) {
+               DWC_WARN("Failed to init the Isoc descriptors");
+               DWC_FREE(req);
+               return res;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+       DWC_CIRCLEQ_INIT_ENTRY(req, queue_entry);
+       req->buf = buf;
+       req->dma = dma_buf;
+       req->length = buflen;
+       req->sent_zlp = zero;
+       req->priv = req_handle;
+
+       //DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+       ep->dwc_ep.dma_addr = dma_buf;
+       ep->dwc_ep.start_xfer_buff = buf;
+       ep->dwc_ep.xfer_buff = buf;
+       ep->dwc_ep.xfer_len = 0;
+       ep->dwc_ep.xfer_count = 0;
+       ep->dwc_ep.sent_zlp = 0;
+       ep->dwc_ep.total_len = buflen;
+
+       /* Add this request to the tail */
+       DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
+       ep->dwc_ep.xiso_queued_xfers++;
+
+//DWC_DEBUG("CP_0");
+//DWC_DEBUG("req->ext_req.tr_sub_flags=%d", req->ext_req.tr_sub_flags);
+//prn_ext_request((struct dwc_iso_xreq_port *) ereq_nonport);
+//prn_ext_request(&req->ext_req);
+
+       //DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+       /* If the req->status == ASAP  then check if there is any active transfer
+        * for this endpoint. If no active transfers, then get the first entry
+        * from the queue and start that transfer
+        */
+       if (req->ext_req.tr_sub_flags == DWC_EREQ_TF_ASAP) {
+               res = dwc_otg_pcd_xiso_start_next_request(pcd, ep);
+               if (res) {
+                       DWC_WARN("Failed to start the next Isoc transfer");
+                       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+                       DWC_FREE(req);
+                       return res;
+               }
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+       return 0;
+}
+
+#endif
+/* END ifdef DWC_UTE_PER_IO ***************************************************/
+int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+                        uint8_t * buf, dwc_dma_t dma_buf, uint32_t buflen,
+                        int zero, void *req_handle, int atomic_alloc)
+{
+       dwc_irqflags_t flags;
+       dwc_otg_pcd_request_t *req;
+       dwc_otg_pcd_ep_t *ep;
+       uint32_t max_transfer;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+       if (!ep || (!ep->desc && ep->dwc_ep.num != 0)) {
+               DWC_WARN("bad ep\n");
+               return -DWC_E_INVALID;
+       }
+
+       if (atomic_alloc) {
+               req = DWC_ALLOC_ATOMIC(sizeof(*req));
+       } else {
+               req = DWC_ALLOC(sizeof(*req));
+       }
+
+       if (!req) {
+               return -DWC_E_NO_MEMORY;
+       }
+       DWC_CIRCLEQ_INIT_ENTRY(req, queue_entry);
+       if (!GET_CORE_IF(pcd)->core_params->opt) {
+               if (ep->dwc_ep.num != 0) {
+                       DWC_ERROR("queue req %p, len %d buf %p\n",
+                                 req_handle, buflen, buf);
+               }
+       }
+
+       req->buf = buf;
+       req->dma = dma_buf;
+       req->length = buflen;
+       req->sent_zlp = zero;
+       req->priv = req_handle;
+       req->dw_align_buf = NULL;
+       if ((dma_buf & 0x3) && GET_CORE_IF(pcd)->dma_enable
+                       && !GET_CORE_IF(pcd)->dma_desc_enable)
+               req->dw_align_buf = DWC_DMA_ALLOC(buflen,
+                                &req->dw_align_buf_dma);
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+       /*
+        * After adding request to the queue for IN ISOC wait for In Token Received
+        * when TX FIFO is empty interrupt and for OUT ISOC wait for OUT Token 
+        * Received when EP is disabled interrupt to obtain starting microframe
+        * (odd/even) start transfer
+        */
+       if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+               if (req != 0) {
+                       depctl_data_t depctl = {.d32 =
+                                   DWC_READ_REG32(&pcd->core_if->dev_if->
+                                                  in_ep_regs[ep->dwc_ep.num]->
+                                                  diepctl) };
+                       ++pcd->request_pending;
+
+                       DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
+                       if (ep->dwc_ep.is_in) {
+                               depctl.b.cnak = 1;
+                               DWC_WRITE_REG32(&pcd->core_if->dev_if->
+                                               in_ep_regs[ep->dwc_ep.num]->
+                                               diepctl, depctl.d32);
+                       }
+                       
+                       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+               }
+               return 0;
+       }
+
+       /*
+        * For EP0 IN without premature status, zlp is required?
+        */
+       if (ep->dwc_ep.num == 0 && ep->dwc_ep.is_in) {
+               DWC_DEBUGPL(DBG_PCDV, "%d-OUT ZLP\n", ep->dwc_ep.num);
+               //_req->zero = 1;
+       }
+
+       /* Start the transfer */
+       if (DWC_CIRCLEQ_EMPTY(&ep->queue) && !ep->stopped) {
+               /* EP0 Transfer? */
+               if (ep->dwc_ep.num == 0) {
+                       switch (pcd->ep0state) {
+                       case EP0_IN_DATA_PHASE:
+                               DWC_DEBUGPL(DBG_PCD,
+                                           "%s ep0: EP0_IN_DATA_PHASE\n",
+                                           __func__);
+                               break;
+
+                       case EP0_OUT_DATA_PHASE:
+                               DWC_DEBUGPL(DBG_PCD,
+                                           "%s ep0: EP0_OUT_DATA_PHASE\n",
+                                           __func__);
+                               if (pcd->request_config) {
+                                       /* Complete STATUS PHASE */
+                                       ep->dwc_ep.is_in = 1;
+                                       pcd->ep0state = EP0_IN_STATUS_PHASE;
+                               }
+                               break;
+
+                       case EP0_IN_STATUS_PHASE:
+                               DWC_DEBUGPL(DBG_PCD,
+                                           "%s ep0: EP0_IN_STATUS_PHASE\n",
+                                           __func__);
+                               break;
+
+                       default:
+                               DWC_DEBUGPL(DBG_ANY, "ep0: odd state %d\n",
+                                           pcd->ep0state);
+                               DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+                               return -DWC_E_SHUTDOWN;
+                       }
+
+                       ep->dwc_ep.dma_addr = dma_buf;
+                       ep->dwc_ep.start_xfer_buff = buf;
+                       ep->dwc_ep.xfer_buff = buf;
+                       ep->dwc_ep.xfer_len = buflen;
+                       ep->dwc_ep.xfer_count = 0;
+                       ep->dwc_ep.sent_zlp = 0;
+                       ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+                       if (zero) {
+                               if ((ep->dwc_ep.xfer_len %
+                                    ep->dwc_ep.maxpacket == 0)
+                                   && (ep->dwc_ep.xfer_len != 0)) {
+                                       ep->dwc_ep.sent_zlp = 1;
+                               }
+
+                       }
+
+                       dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd),
+                                                  &ep->dwc_ep);
+               }               // non-ep0 endpoints
+               else {
+#ifdef DWC_UTE_CFI
+                       if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+                               /* store the request length */
+                               ep->dwc_ep.cfi_req_len = buflen;
+                               pcd->cfi->ops.build_descriptors(pcd->cfi, pcd,
+                                                               ep, req);
+                       } else {
+#endif
+                               max_transfer =
+                                   GET_CORE_IF(ep->pcd)->core_params->
+                                   max_transfer_size;
+
+                               /* Setup and start the Transfer */
+                               if (req->dw_align_buf){
+                                       if (ep->dwc_ep.is_in)
+                                               dwc_memcpy(req->dw_align_buf,
+                                                          buf, buflen);
+                                       ep->dwc_ep.dma_addr =
+                                           req->dw_align_buf_dma;
+                                       ep->dwc_ep.start_xfer_buff =
+                                           req->dw_align_buf;
+                                       ep->dwc_ep.xfer_buff =
+                                           req->dw_align_buf;
+                               } else {
+                                       ep->dwc_ep.dma_addr = dma_buf;
+                                       ep->dwc_ep.start_xfer_buff = buf;
+                                        ep->dwc_ep.xfer_buff = buf;    
+                               }
+                               ep->dwc_ep.xfer_len = 0;
+                               ep->dwc_ep.xfer_count = 0;
+                               ep->dwc_ep.sent_zlp = 0;
+                               ep->dwc_ep.total_len = buflen;
+
+                               ep->dwc_ep.maxxfer = max_transfer;
+                               if (GET_CORE_IF(pcd)->dma_desc_enable) {
+                                       uint32_t out_max_xfer =
+                                           DDMA_MAX_TRANSFER_SIZE -
+                                           (DDMA_MAX_TRANSFER_SIZE % 4);
+                                       if (ep->dwc_ep.is_in) {
+                                               if (ep->dwc_ep.maxxfer >
+                                                   DDMA_MAX_TRANSFER_SIZE) {
+                                                       ep->dwc_ep.maxxfer =
+                                                           DDMA_MAX_TRANSFER_SIZE;
+                                               }
+                                       } else {
+                                               if (ep->dwc_ep.maxxfer >
+                                                   out_max_xfer) {
+                                                       ep->dwc_ep.maxxfer =
+                                                           out_max_xfer;
+                                               }
+                                       }
+                               }
+                               if (ep->dwc_ep.maxxfer < ep->dwc_ep.total_len) {
+                                       ep->dwc_ep.maxxfer -=
+                                           (ep->dwc_ep.maxxfer %
+                                            ep->dwc_ep.maxpacket);
+                               }
+
+                               if (zero) {
+                                       if ((ep->dwc_ep.total_len %
+                                            ep->dwc_ep.maxpacket == 0)
+                                           && (ep->dwc_ep.total_len != 0)) {
+                                               ep->dwc_ep.sent_zlp = 1;
+                                       }
+                               }
+#ifdef DWC_UTE_CFI
+                       }
+#endif
+                       dwc_otg_ep_start_transfer(GET_CORE_IF(pcd),
+                                                 &ep->dwc_ep);
+               }
+       }
+
+       if (req != 0) {
+               ++pcd->request_pending;
+               DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
+               if (ep->dwc_ep.is_in && ep->stopped
+                   && !(GET_CORE_IF(pcd)->dma_enable)) {
+                       /** @todo NGS Create a function for this. */
+                       diepmsk_data_t diepmsk = {.d32 = 0 };
+                       diepmsk.b.intktxfemp = 1;
+                       if (GET_CORE_IF(pcd)->multiproc_int_enable) {
+                               DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
+                                                dev_if->dev_global_regs->diepeachintmsk
+                                                [ep->dwc_ep.num], 0,
+                                                diepmsk.d32);
+                       } else {
+                               DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
+                                                dev_if->dev_global_regs->
+                                                diepmsk, 0, diepmsk.d32);
+                       }
+
+               }
+       }
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+       return 0;
+}
+
+int dwc_otg_pcd_ep_dequeue(dwc_otg_pcd_t * pcd, void *ep_handle,
+                          void *req_handle)
+{
+       dwc_irqflags_t flags;
+       dwc_otg_pcd_request_t *req;
+       dwc_otg_pcd_ep_t *ep;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+       if (!ep || (!ep->desc && ep->dwc_ep.num != 0)) {
+               DWC_WARN("bad argument\n");
+               return -DWC_E_INVALID;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+       /* make sure it's actually queued on this endpoint */
+       DWC_CIRCLEQ_FOREACH(req, &ep->queue, queue_entry) {
+               if (req->priv == (void *)req_handle) {
+                       break;
+               }
+       }
+
+       if (req->priv != (void *)req_handle) {
+               DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+               return -DWC_E_INVALID;
+       }
+
+       if (!DWC_CIRCLEQ_EMPTY_ENTRY(req, queue_entry)) {
+               dwc_otg_request_done(ep, req, -DWC_E_RESTART);
+       } else {
+               req = NULL;
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+       return req ? 0 : -DWC_E_SHUTDOWN;
+
+}
+
+/**
+ * dwc_otg_pcd_ep_wedge - sets the halt feature and ignores clear requests
+ *
+ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
+ * requests. If the gadget driver clears the halt status, it will
+ * automatically unwedge the endpoint.
+ *
+ * Returns zero on success, else negative DWC error code.
+ */
+int dwc_otg_pcd_ep_wedge(dwc_otg_pcd_t * pcd, void *ep_handle)
+{
+       dwc_otg_pcd_ep_t *ep;
+       dwc_irqflags_t flags;
+       int retval = 0;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+
+       if ((!ep->desc && ep != &pcd->ep0) ||
+           (ep->desc && (ep->desc->bmAttributes == UE_ISOCHRONOUS))) {
+               DWC_WARN("%s, bad ep\n", __func__);
+               return -DWC_E_INVALID;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               DWC_WARN("%d %s XFer In process\n", ep->dwc_ep.num,
+                        ep->dwc_ep.is_in ? "IN" : "OUT");
+               retval = -DWC_E_AGAIN;
+       } else {
+                /* This code needs to be reviewed */
+               if (ep->dwc_ep.is_in == 1 && GET_CORE_IF(pcd)->dma_desc_enable) {
+                       dtxfsts_data_t txstatus;
+                       fifosize_data_t txfifosize;
+
+                       txfifosize.d32 =
+                           DWC_READ_REG32(&GET_CORE_IF(pcd)->
+                                          core_global_regs->dtxfsiz[ep->dwc_ep.
+                                                                    tx_fifo_num]);
+                       txstatus.d32 =
+                           DWC_READ_REG32(&GET_CORE_IF(pcd)->
+                                          dev_if->in_ep_regs[ep->dwc_ep.num]->
+                                          dtxfsts);
+
+                       if (txstatus.b.txfspcavail < txfifosize.b.depth) {
+                               DWC_WARN("%s() Data In Tx Fifo\n", __func__);
+                               retval = -DWC_E_AGAIN;
+                       } else {
+                               if (ep->dwc_ep.num == 0) {
+                                       pcd->ep0state = EP0_STALL;
+                               }
+
+                               ep->stopped = 1;
+                               dwc_otg_ep_set_stall(GET_CORE_IF(pcd),
+                                                    &ep->dwc_ep);
+                       }
+               } else {
+                       if (ep->dwc_ep.num == 0) {
+                               pcd->ep0state = EP0_STALL;
+                       }
+
+                       ep->stopped = 1;
+                       dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+               }
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+       return retval;
+}
+   
+int dwc_otg_pcd_ep_halt(dwc_otg_pcd_t * pcd, void *ep_handle, int value)
+{
+       dwc_otg_pcd_ep_t *ep;
+       dwc_irqflags_t flags;
+       int retval = 0;
+
+       ep = get_ep_from_handle(pcd, ep_handle);
+
+       if (!ep || (!ep->desc && ep != &pcd->ep0) ||
+           (ep->desc && (ep->desc->bmAttributes == UE_ISOCHRONOUS))) {
+               DWC_WARN("%s, bad ep\n", __func__);
+               return -DWC_E_INVALID;
+       }
+
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               DWC_WARN("%d %s XFer In process\n", ep->dwc_ep.num,
+                        ep->dwc_ep.is_in ? "IN" : "OUT");
+               retval = -DWC_E_AGAIN;
+       } else if (value == 0) {
+               dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+       } else if (value == 1) {
+               if (ep->dwc_ep.is_in == 1 && GET_CORE_IF(pcd)->dma_desc_enable) {
+                       dtxfsts_data_t txstatus;
+                       fifosize_data_t txfifosize;
+
+                       txfifosize.d32 =
+                           DWC_READ_REG32(&GET_CORE_IF(pcd)->core_global_regs->
+                                          dtxfsiz[ep->dwc_ep.tx_fifo_num]);
+                       txstatus.d32 =
+                           DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
+                                          in_ep_regs[ep->dwc_ep.num]->dtxfsts);
+
+                       if (txstatus.b.txfspcavail < txfifosize.b.depth) {
+                               DWC_WARN("%s() Data In Tx Fifo\n", __func__);
+                               retval = -DWC_E_AGAIN;
+                       } else {
+                               if (ep->dwc_ep.num == 0) {
+                                       pcd->ep0state = EP0_STALL;
+                               }
+
+                               ep->stopped = 1;
+                               dwc_otg_ep_set_stall(GET_CORE_IF(pcd),
+                                                    &ep->dwc_ep);
+                       }
+               } else {
+                       if (ep->dwc_ep.num == 0) {
+                               pcd->ep0state = EP0_STALL;
+                       }
+
+                       ep->stopped = 1;
+                       dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+               }
+       } else if (value == 2) {
+               ep->dwc_ep.stall_clear_flag = 0;
+       } else if (value == 3) {
+               ep->dwc_ep.stall_clear_flag = 1;
+       }
+
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+       return retval;
+}
+
+/**
+ * This function initiates remote wakeup of the host from suspend state.
+ */
+void dwc_otg_pcd_rem_wkup_from_suspend(dwc_otg_pcd_t * pcd, int set)
+{
+       dctl_data_t dctl = { 0 };
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dsts_data_t dsts;
+
+       dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+       if (!dsts.b.suspsts) {
+               DWC_WARN("Remote wakeup while is not in suspend state\n");
+       }
+       /* Check if DEVICE_REMOTE_WAKEUP feature enabled */
+       if (pcd->remote_wakeup_enable) {
+               if (set) {
+
+                       if (core_if->adp_enable) {
+                               gpwrdn_data_t gpwrdn;
+
+                               dwc_otg_adp_probe_stop(core_if);
+
+                               /* Mask SRP detected interrupt from Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.srp_det_msk = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                core_global_regs->gpwrdn,
+                                                gpwrdn.d32, 0);
+
+                               /* Disable Power Down Logic */
+                               gpwrdn.d32 = 0;
+                               gpwrdn.b.pmuactv = 1;
+                               DWC_MODIFY_REG32(&core_if->
+                                                core_global_regs->gpwrdn,
+                                                gpwrdn.d32, 0);
+
+                               /*
+                                * Initialize the Core for Device mode.
+                                */
+                               core_if->op_state = B_PERIPHERAL;
+                               dwc_otg_core_init(core_if);
+                               dwc_otg_enable_global_interrupts(core_if);
+                               cil_pcd_start(core_if);
+
+                               dwc_otg_initiate_srp(core_if);
+                       }
+
+                       dctl.b.rmtwkupsig = 1;
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                        dctl, 0, dctl.d32);
+                       DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
+
+                       dwc_mdelay(2);
+                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                        dctl, dctl.d32, 0);
+                       DWC_DEBUGPL(DBG_PCD, "Clear Remote Wakeup\n");
+               }
+       } else {
+               DWC_DEBUGPL(DBG_PCD, "Remote Wakeup is disabled\n");
+       }
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * This function initiates remote wakeup of the host from L1 sleep state.
+ */
+void dwc_otg_pcd_rem_wkup_from_sleep(dwc_otg_pcd_t * pcd, int set)
+{
+       glpmcfg_data_t lpmcfg;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+
+       /* Check if we are in L1 state */
+       if (!lpmcfg.b.prt_sleep_sts) {
+               DWC_DEBUGPL(DBG_PCD, "Device is not in sleep state\n");
+               return;
+       }
+
+       /* Check if host allows remote wakeup */
+       if (!lpmcfg.b.rem_wkup_en) {
+               DWC_DEBUGPL(DBG_PCD, "Host does not allow remote wakeup\n");
+               return;
+       }
+
+       /* Check if Resume OK */
+       if (!lpmcfg.b.sleep_state_resumeok) {
+               DWC_DEBUGPL(DBG_PCD, "Sleep state resume is not OK\n");
+               return;
+       }
+
+       lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+       lpmcfg.b.en_utmi_sleep = 0;
+       lpmcfg.b.hird_thres &= (~(1 << 4));
+       DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+
+       if (set) {
+               dctl_data_t dctl = {.d32 = 0 };
+               dctl.b.rmtwkupsig = 1;
+               /* Set RmtWkUpSig bit to start remote wakup signaling.
+                * Hardware will automatically clear this bit.
+                */
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl,
+                                0, dctl.d32);
+               DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
+       }
+
+}
+#endif
+
+/**
+ * Performs remote wakeup.
+ */
+void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * pcd, int set)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_irqflags_t flags;
+       if (dwc_otg_is_device_mode(core_if)) {
+               DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+               if (core_if->lx_state == DWC_OTG_L1) {
+                       dwc_otg_pcd_rem_wkup_from_sleep(pcd, set);
+               } else {
+#endif
+                       dwc_otg_pcd_rem_wkup_from_suspend(pcd, set);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+               }
+#endif
+               DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+       }
+       return;
+}
+
+void dwc_otg_pcd_disconnect_us(dwc_otg_pcd_t * pcd, int no_of_usecs)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dctl_data_t dctl = { 0 };
+
+       if (dwc_otg_is_device_mode(core_if)) {
+               dctl.b.sftdiscon = 1;
+               DWC_PRINTF("Soft disconnect for %d useconds\n",no_of_usecs);
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+               dwc_udelay(no_of_usecs);
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32,0);
+               
+       } else{
+               DWC_PRINTF("NOT SUPPORTED IN HOST MODE\n");
+       }
+       return;
+
+}
+
+int dwc_otg_pcd_wakeup(dwc_otg_pcd_t * pcd)
+{
+       dsts_data_t dsts;
+       gotgctl_data_t gotgctl;
+
+       /*
+        * This function starts the Protocol if no session is in progress. If
+        * a session is already in progress, but the device is suspended,
+        * remote wakeup signaling is started.
+        */
+
+       /* Check if valid session */
+       gotgctl.d32 =
+           DWC_READ_REG32(&(GET_CORE_IF(pcd)->core_global_regs->gotgctl));
+       if (gotgctl.b.bsesvld) {
+               /* Check if suspend state */
+               dsts.d32 =
+                   DWC_READ_REG32(&
+                                  (GET_CORE_IF(pcd)->dev_if->
+                                   dev_global_regs->dsts));
+               if (dsts.b.suspsts) {
+                       dwc_otg_pcd_remote_wakeup(pcd, 1);
+               }
+       } else {
+               dwc_otg_pcd_initiate_srp(pcd);
+       }
+
+       return 0;
+
+}
+
+/**
+ * Start the SRP timer to detect when the SRP does not complete within
+ * 6 seconds.
+ *
+ * @param pcd the pcd structure.
+ */
+void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * pcd)
+{
+       dwc_irqflags_t flags;
+       DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+       dwc_otg_initiate_srp(GET_CORE_IF(pcd));
+       DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+}
+
+int dwc_otg_pcd_get_frame_number(dwc_otg_pcd_t * pcd)
+{
+       return dwc_otg_get_frame_number(GET_CORE_IF(pcd));
+}
+
+int dwc_otg_pcd_is_lpm_enabled(dwc_otg_pcd_t * pcd)
+{
+       return GET_CORE_IF(pcd)->core_params->lpm_enable;
+}
+
+uint32_t get_b_hnp_enable(dwc_otg_pcd_t * pcd)
+{
+       return pcd->b_hnp_enable;
+}
+
+uint32_t get_a_hnp_support(dwc_otg_pcd_t * pcd)
+{
+       return pcd->a_hnp_support;
+}
+
+uint32_t get_a_alt_hnp_support(dwc_otg_pcd_t * pcd)
+{
+       return pcd->a_alt_hnp_support;
+}
+
+int dwc_otg_pcd_get_rmwkup_enable(dwc_otg_pcd_t * pcd)
+{
+       return pcd->remote_wakeup_enable;
+}
+
+#endif /* DWC_HOST_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_pcd.h b/drivers/usb/host/dwc_otg/dwc_otg_pcd.h
new file mode 100644
index 0000000..8ef7ba6
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd.h
@@ -0,0 +1,266 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
+ * $Revision: #48 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+#if !defined(__DWC_PCD_H__)
+#define __DWC_PCD_H__
+
+#include "dwc_otg_os_dep.h"
+#include "usb.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_pcd_if.h"
+struct cfiobject;
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Perpherial Contoller Driver (PCD).
+ *
+ * The Peripheral Controller Driver (PCD) for Linux will implement the
+ * Gadget API, so that the existing Gadget drivers can be used. For
+ * the Mass Storage Function driver the File-backed USB Storage Gadget
+ * (FBS) driver will be used.  The FBS driver supports the
+ * Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
+ * transports.
+ *
+ */
+
+/** Invalid DMA Address */
+#define DWC_DMA_ADDR_INVALID   (~(dwc_dma_t)0)
+
+/** Max Transfer size for any EP */
+#define DDMA_MAX_TRANSFER_SIZE 65535
+
+/**
+ * Get the pointer to the core_if from the pcd pointer.
+ */
+#define GET_CORE_IF( _pcd ) (_pcd->core_if)
+
+/**
+ * States of EP0.
+ */
+typedef enum ep0_state {
+       EP0_DISCONNECT,         /* no host */
+       EP0_IDLE,
+       EP0_IN_DATA_PHASE,
+       EP0_OUT_DATA_PHASE,
+       EP0_IN_STATUS_PHASE,
+       EP0_OUT_STATUS_PHASE,
+       EP0_STALL,
+} ep0state_e;
+
+/** Fordward declaration.*/
+struct dwc_otg_pcd;
+
+/** DWC_otg iso request structure.
+ *
+ */
+typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
+
+#ifdef DWC_UTE_PER_IO
+
+/**
+ * This shall be the exact analogy of the same type structure defined in the
+ * usb_gadget.h. Each descriptor contains
+ */
+struct dwc_iso_pkt_desc_port {
+       uint32_t offset;
+       uint32_t length;        /* expected length */
+       uint32_t actual_length;
+       uint32_t status;
+};
+
+struct dwc_iso_xreq_port {
+       /** transfer/submission flag */
+       uint32_t tr_sub_flags;
+       /** Start the request ASAP */
+#define DWC_EREQ_TF_ASAP               0x00000002
+       /** Just enqueue the request w/o initiating a transfer */
+#define DWC_EREQ_TF_ENQUEUE            0x00000004
+
+       /**
+       * count of ISO packets attached to this request - shall
+       * not exceed the pio_alloc_pkt_count
+       */
+       uint32_t pio_pkt_count;
+       /** count of ISO packets allocated for this request */
+       uint32_t pio_alloc_pkt_count;
+       /** number of ISO packet errors */
+       uint32_t error_count;
+       /** reserved for future extension */
+       uint32_t res;
+       /** Will be allocated and freed in the UTE gadget and based on the CFC value */
+       struct dwc_iso_pkt_desc_port *per_io_frame_descs;
+};
+#endif
+/** DWC_otg request structure.
+ * This structure is a list of requests.
+ */
+typedef struct dwc_otg_pcd_request {
+       void *priv;
+       void *buf;
+       dwc_dma_t dma;
+       uint32_t length;
+       uint32_t actual;
+       unsigned sent_zlp:1;
+    /**
+     * Used instead of original buffer if
+     * it(physical address) is not dword-aligned.
+     **/
+     uint8_t *dw_align_buf;
+     dwc_dma_t dw_align_buf_dma;
+
+        DWC_CIRCLEQ_ENTRY(dwc_otg_pcd_request) queue_entry;
+#ifdef DWC_UTE_PER_IO
+       struct dwc_iso_xreq_port ext_req;
+       //void *priv_ereq_nport; /*  */
+#endif
+} dwc_otg_pcd_request_t;
+
+DWC_CIRCLEQ_HEAD(req_list, dwc_otg_pcd_request);
+
+/**      PCD EP structure.
+ * This structure describes an EP, there is an array of EPs in the PCD
+ * structure.
+ */
+typedef struct dwc_otg_pcd_ep {
+       /** USB EP Descriptor */
+       const usb_endpoint_descriptor_t *desc;
+
+       /** queue of dwc_otg_pcd_requests. */
+       struct req_list queue;
+       unsigned stopped:1;
+       unsigned disabling:1;
+       unsigned dma:1;
+       unsigned queue_sof:1;
+
+#ifdef DWC_EN_ISOC
+       /** ISOC req handle passed */
+       void *iso_req_handle;
+#endif                         //_EN_ISOC_
+
+       /** DWC_otg ep data. */
+       dwc_ep_t dwc_ep;
+
+       /** Pointer to PCD */
+       struct dwc_otg_pcd *pcd;
+
+       void *priv;
+} dwc_otg_pcd_ep_t;
+
+/** DWC_otg PCD Structure.
+ * This structure encapsulates the data for the dwc_otg PCD.
+ */
+struct dwc_otg_pcd {
+       const struct dwc_otg_pcd_function_ops *fops;
+       /** The DWC otg device pointer */
+       struct dwc_otg_device *otg_dev;
+       /** Core Interface */
+       dwc_otg_core_if_t *core_if;
+       /** State of EP0 */
+       ep0state_e ep0state;
+       /** EP0 Request is pending */
+       unsigned ep0_pending:1;
+       /** Indicates when SET CONFIGURATION Request is in process */
+       unsigned request_config:1;
+       /** The state of the Remote Wakeup Enable. */
+       unsigned remote_wakeup_enable:1;
+       /** The state of the B-Device HNP Enable. */
+       unsigned b_hnp_enable:1;
+       /** The state of A-Device HNP Support. */
+       unsigned a_hnp_support:1;
+       /** The state of the A-Device Alt HNP support. */
+       unsigned a_alt_hnp_support:1;
+       /** Count of pending Requests */
+       unsigned request_pending;
+
+       /** SETUP packet for EP0
+        * This structure is allocated as a DMA buffer on PCD initialization
+        * with enough space for up to 3 setup packets.
+        */
+       union {
+               usb_device_request_t req;
+               uint32_t d32[2];
+       } *setup_pkt;
+
+       dwc_dma_t setup_pkt_dma_handle;
+
+       /* Additional buffer and flag for CTRL_WR premature case */
+       uint8_t *backup_buf;
+       unsigned data_terminated;
+
+       /** 2-byte dma buffer used to return status from GET_STATUS */
+       uint16_t *status_buf;
+       dwc_dma_t status_buf_dma_handle;
+
+       /** EP0 */
+       dwc_otg_pcd_ep_t ep0;
+
+       /** Array of IN EPs. */
+       dwc_otg_pcd_ep_t in_ep[MAX_EPS_CHANNELS - 1];
+       /** Array of OUT EPs. */
+       dwc_otg_pcd_ep_t out_ep[MAX_EPS_CHANNELS - 1];
+       /** number of valid EPs in the above array. */
+//        unsigned      num_eps : 4;
+       dwc_spinlock_t *lock;
+
+       /** Tasklet to defer starting of TEST mode transmissions until
+        *      Status Phase has been completed.
+        */
+       dwc_tasklet_t *test_mode_tasklet;
+
+       /** Tasklet to delay starting of xfer in DMA mode */
+       dwc_tasklet_t *start_xfer_tasklet;
+
+       /** The test mode to enter when the tasklet is executed. */
+       unsigned test_mode;
+       /** The cfi_api structure that implements most of the CFI API
+        * and OTG specific core configuration functionality
+        */
+#ifdef DWC_UTE_CFI
+       struct cfiobject *cfi;
+#endif
+
+};
+
+//FIXME this functions should be static, and this prototypes should be removed
+extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep);
+extern void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep,
+                                dwc_otg_pcd_request_t * req, int32_t status);
+
+void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
+                            void *req_handle);
+
+extern void do_test_mode(void *data);
+#endif
+#endif /* DWC_HOST_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h b/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h
new file mode 100644
index 0000000..c8d2e0e
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h
@@ -0,0 +1,360 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_if.h $
+ * $Revision: #11 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+#if !defined(__DWC_PCD_IF_H__)
+#define __DWC_PCD_IF_H__
+
+//#include "dwc_os.h"
+#include "dwc_otg_core_if.h"
+
+/** @file
+ * This file defines DWC_OTG PCD Core API.
+ */
+
+struct dwc_otg_pcd;
+typedef struct dwc_otg_pcd dwc_otg_pcd_t;
+
+/** Maxpacket size for EP0 */
+#define MAX_EP0_SIZE   64
+/** Maxpacket size for any EP */
+#define MAX_PACKET_SIZE 1024
+
+/** @name Function Driver Callbacks */
+/** @{ */
+
+/** This function will be called whenever a previously queued request has
+ * completed.  The status value will be set to -DWC_E_SHUTDOWN to indicated a
+ * failed or aborted transfer, or -DWC_E_RESTART to indicate the device was reset,
+ * or -DWC_E_TIMEOUT to indicate it timed out, or -DWC_E_INVALID to indicate invalid
+ * parameters. */
+typedef int (*dwc_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
+                                   void *req_handle, int32_t status,
+                                   uint32_t actual);
+/**
+ * This function will be called whenever a previousle queued ISOC request has
+ * completed. Count of ISOC packets could be read using dwc_otg_pcd_get_iso_packet_count
+ * function.
+ * The status of each ISOC packet could be read using dwc_otg_pcd_get_iso_packet_*
+ * functions.
+ */
+typedef int (*dwc_isoc_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
+                                        void *req_handle, int proc_buf_num);
+/** This function should handle any SETUP request that cannot be handled by the
+ * PCD Core.  This includes most GET_DESCRIPTORs, SET_CONFIGS, Any
+ * class-specific requests, etc.  The function must non-blocking.
+ *
+ * Returns 0 on success.
+ * Returns -DWC_E_NOT_SUPPORTED if the request is not supported.
+ * Returns -DWC_E_INVALID if the setup request had invalid parameters or bytes.
+ * Returns -DWC_E_SHUTDOWN on any other error. */
+typedef int (*dwc_setup_cb_t) (dwc_otg_pcd_t * pcd, uint8_t * bytes);
+/** This is called whenever the device has been disconnected.  The function
+ * driver should take appropriate action to clean up all pending requests in the
+ * PCD Core, remove all endpoints (except ep0), and initialize back to reset
+ * state. */
+typedef int (*dwc_disconnect_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called when device has been connected. */
+typedef int (*dwc_connect_cb_t) (dwc_otg_pcd_t * pcd, int speed);
+/** This function is called when device has been suspended */
+typedef int (*dwc_suspend_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called when device has received LPM tokens, i.e.
+ * device has been sent to sleep state. */
+typedef int (*dwc_sleep_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called when device has been resumed
+ * from suspend(L2) or L1 sleep state. */
+typedef int (*dwc_resume_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called whenever hnp params has been changed.
+ * User can call get_b_hnp_enable, get_a_hnp_support, get_a_alt_hnp_support functions
+ * to get hnp parameters. */
+typedef int (*dwc_hnp_params_changed_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called whenever USB RESET is detected. */
+typedef int (*dwc_reset_cb_t) (dwc_otg_pcd_t * pcd);
+
+typedef int (*cfi_setup_cb_t) (dwc_otg_pcd_t * pcd, void *ctrl_req_bytes);
+
+/**
+ *
+ * @param ep_handle    Void pointer to the usb_ep structure
+ * @param ereq_port Pointer to the extended request structure created in the
+ *                                     portable part.
+ */
+typedef int (*xiso_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
+                                    void *req_handle, int32_t status,
+                                    void *ereq_port);
+/** Function Driver Ops Data Structure */
+struct dwc_otg_pcd_function_ops {
+       dwc_connect_cb_t connect;
+       dwc_disconnect_cb_t disconnect;
+       dwc_setup_cb_t setup;
+       dwc_completion_cb_t complete;
+       dwc_isoc_completion_cb_t isoc_complete;
+       dwc_suspend_cb_t suspend;
+       dwc_sleep_cb_t sleep;
+       dwc_resume_cb_t resume;
+       dwc_reset_cb_t reset;
+       dwc_hnp_params_changed_cb_t hnp_changed;
+       cfi_setup_cb_t cfi_setup;
+#ifdef DWC_UTE_PER_IO
+       xiso_completion_cb_t xisoc_complete;
+#endif
+};
+/** @} */
+
+/** @name Function Driver Functions */
+/** @{ */
+
+/** Call this function to get pointer on dwc_otg_pcd_t,
+ * this pointer will be used for all PCD API functions.
+ *
+ * @param core_if The DWC_OTG Core
+ */
+extern dwc_otg_pcd_t *dwc_otg_pcd_init(dwc_otg_core_if_t * core_if);
+
+/** Frees PCD allocated by dwc_otg_pcd_init
+ *
+ * @param pcd The PCD
+ */
+extern void dwc_otg_pcd_remove(dwc_otg_pcd_t * pcd);
+
+/** Call this to bind the function driver to the PCD Core.
+ *
+ * @param pcd Pointer on dwc_otg_pcd_t returned by dwc_otg_pcd_init function.
+ * @param fops The Function Driver Ops data structure containing pointers to all callbacks.
+ */
+extern void dwc_otg_pcd_start(dwc_otg_pcd_t * pcd,
+                             const struct dwc_otg_pcd_function_ops *fops);
+
+/** Enables an endpoint for use.  This function enables an endpoint in
+ * the PCD.  The endpoint is described by the ep_desc which has the
+ * same format as a USB ep descriptor.  The ep_handle parameter is used to refer
+ * to the endpoint from other API functions and in callbacks.  Normally this
+ * should be called after a SET_CONFIGURATION/SET_INTERFACE to configure the
+ * core for that interface.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns 0 on success.
+ *
+ * @param pcd The PCD
+ * @param ep_desc Endpoint descriptor
+ * @param usb_ep Handle on endpoint, that will be used to identify endpoint.
+ */
+extern int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t * pcd,
+                                const uint8_t * ep_desc, void *usb_ep);
+
+/** Disable the endpoint referenced by ep_handle.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error occurred.
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_disable(dwc_otg_pcd_t * pcd, void *ep_handle);
+
+/** Queue a data transfer request on the endpoint referenced by ep_handle.
+ * After the transfer is completes, the complete callback will be called with
+ * the request status.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param buf The buffer for the data
+ * @param dma_buf The DMA buffer for the data
+ * @param buflen The length of the data transfer
+ * @param zero Specifies whether to send zero length last packet.
+ * @param req_handle Set this handle to any value to use to reference this
+ * request in the ep_dequeue function or from the complete callback
+ * @param atomic_alloc If driver need to perform atomic allocations
+ * for internal data structures.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+                               uint8_t * buf, dwc_dma_t dma_buf,
+                               uint32_t buflen, int zero, void *req_handle,
+                               int atomic_alloc);
+#ifdef DWC_UTE_PER_IO
+/**
+ *
+ * @param ereq_nonport Pointer to the extended request part of the
+ *                                             usb_request structure defined in usb_gadget.h file.
+ */
+extern int dwc_otg_pcd_xiso_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+                                    uint8_t * buf, dwc_dma_t dma_buf,
+                                    uint32_t buflen, int zero,
+                                    void *req_handle, int atomic_alloc,
+                                    void *ereq_nonport);
+
+#endif
+
+/** De-queue the specified data transfer that has not yet completed.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_dequeue(dwc_otg_pcd_t * pcd, void *ep_handle,
+                                 void *req_handle);
+
+/** Halt (STALL) an endpoint or clear it.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns -DWC_E_AGAIN if the STALL cannot be sent and must be tried again later
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_halt(dwc_otg_pcd_t * pcd, void *ep_handle, int value);
+
+/** This function */
+extern int dwc_otg_pcd_ep_wedge(dwc_otg_pcd_t * pcd, void *ep_handle);
+
+/** This function should be called on every hardware interrupt */
+extern int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * pcd);
+
+/** This function returns current frame number */
+extern int dwc_otg_pcd_get_frame_number(dwc_otg_pcd_t * pcd);
+
+/**
+ * Start isochronous transfers on the endpoint referenced by ep_handle.
+ * For isochronous transfers duble buffering is used.
+ * After processing each of buffers comlete callback will be called with
+ * status for each transaction.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param buf0 The virtual address of first data buffer
+ * @param buf1 The virtual address of second data buffer
+ * @param dma0 The DMA address of first data buffer
+ * @param dma1 The DMA address of second data buffer
+ * @param sync_frame Data pattern frame number
+ * @param dp_frame Data size for pattern frame
+ * @param data_per_frame Data size for regular frame
+ * @param start_frame Frame number to start transfers, if -1 then start transfers ASAP.
+ * @param buf_proc_intrvl Interval of ISOC Buffer processing
+ * @param req_handle Handle of ISOC request
+ * @param atomic_alloc Specefies whether to perform atomic allocation for
+ *                     internal data structures.
+ *
+ * Returns -DWC_E_NO_MEMORY if there is no enough memory.
+ * Returns -DWC_E_INVALID if incorrect arguments are passed to the function.
+ * Returns -DW_E_SHUTDOWN for any other error.
+ * Returns 0 on success
+ */
+extern int dwc_otg_pcd_iso_ep_start(dwc_otg_pcd_t * pcd, void *ep_handle,
+                                   uint8_t * buf0, uint8_t * buf1,
+                                   dwc_dma_t dma0, dwc_dma_t dma1,
+                                   int sync_frame, int dp_frame,
+                                   int data_per_frame, int start_frame,
+                                   int buf_proc_intrvl, void *req_handle,
+                                   int atomic_alloc);
+
+/** Stop ISOC transfers on endpoint referenced by ep_handle.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param req_handle Handle of ISOC request
+ *
+ * Returns -DWC_E_INVALID if incorrect arguments are passed to the function
+ * Returns 0 on success
+ */
+int dwc_otg_pcd_iso_ep_stop(dwc_otg_pcd_t * pcd, void *ep_handle,
+                           void *req_handle);
+
+/** Get ISOC packet status.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param iso_req_handle Isochronoush request handle
+ * @param packet Number of packet
+ * @param status Out parameter for returning status
+ * @param actual Out parameter for returning actual length
+ * @param offset Out parameter for returning offset
+ *
+ */
+extern void dwc_otg_pcd_get_iso_packet_params(dwc_otg_pcd_t * pcd,
+                                             void *ep_handle,
+                                             void *iso_req_handle, int packet,
+                                             int *status, int *actual,
+                                             int *offset);
+
+/** Get ISOC packet count.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param iso_req_handle
+ */
+extern int dwc_otg_pcd_get_iso_packet_count(dwc_otg_pcd_t * pcd,
+                                           void *ep_handle,
+                                           void *iso_req_handle);
+
+/** This function starts the SRP Protocol if no session is in progress. If
+ * a session is already in progress, but the device is suspended,
+ * remote wakeup signaling is started.
+ */
+extern int dwc_otg_pcd_wakeup(dwc_otg_pcd_t * pcd);
+
+/** This function returns 1 if LPM support is enabled, and 0 otherwise. */
+extern int dwc_otg_pcd_is_lpm_enabled(dwc_otg_pcd_t * pcd);
+
+/** This function returns 1 if remote wakeup is allowed and 0, otherwise. */
+extern int dwc_otg_pcd_get_rmwkup_enable(dwc_otg_pcd_t * pcd);
+
+/** Initiate SRP */
+extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * pcd);
+
+/** Starts remote wakeup signaling. */
+extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * pcd, int set);
+
+/** Starts micorsecond soft disconnect. */
+extern void dwc_otg_pcd_disconnect_us(dwc_otg_pcd_t * pcd, int no_of_usecs);
+/** This function returns whether device is dualspeed.*/
+extern uint32_t dwc_otg_pcd_is_dualspeed(dwc_otg_pcd_t * pcd);
+
+/** This function returns whether device is otg. */
+extern uint32_t dwc_otg_pcd_is_otg(dwc_otg_pcd_t * pcd);
+
+/** These functions allow to get hnp parameters */
+extern uint32_t get_b_hnp_enable(dwc_otg_pcd_t * pcd);
+extern uint32_t get_a_hnp_support(dwc_otg_pcd_t * pcd);
+extern uint32_t get_a_alt_hnp_support(dwc_otg_pcd_t * pcd);
+
+/** CFI specific Interface functions */
+/** Allocate a cfi buffer */
+extern uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep,
+                                    dwc_dma_t * addr, size_t buflen,
+                                    int flags);
+
+/******************************************************************************/
+
+/** @} */
+
+#endif                         /* __DWC_PCD_IF_H__ */
+
+#endif                         /* DWC_HOST_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
new file mode 100644
index 0000000..27061d3
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
@@ -0,0 +1,5147 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_intr.c $
+ * $Revision: #116 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+#include "dwc_otg_pcd.h"
+
+#ifdef DWC_UTE_CFI
+#include "dwc_otg_cfi.h"
+#endif
+
+#ifdef DWC_UTE_PER_IO
+extern void complete_xiso_ep(dwc_otg_pcd_ep_t * ep);
+#endif
+//#define PRINT_CFI_DMA_DESCS
+
+#define DEBUG_EP0
+
+/**
+ * This function updates OTG.
+ */
+static void dwc_otg_pcd_update_otg(dwc_otg_pcd_t * pcd, const unsigned reset)
+{
+
+       if (reset) {
+               pcd->b_hnp_enable = 0;
+               pcd->a_hnp_support = 0;
+               pcd->a_alt_hnp_support = 0;
+       }
+
+       if (pcd->fops->hnp_changed) {
+               pcd->fops->hnp_changed(pcd);
+       }
+}
+
+/** @file
+ * This file contains the implementation of the PCD Interrupt handlers.
+ *
+ * The PCD handles the device interrupts.  Many conditions can cause a
+ * device interrupt. When an interrupt occurs, the device interrupt
+ * service routine determines the cause of the interrupt and
+ * dispatches handling to the appropriate function. These interrupt
+ * handling functions are described below.
+ * All interrupt registers are processed from LSB to MSB.
+ */
+
+/**
+ * This function prints the ep0 state for debug purposes.
+ */
+static inline void print_ep0_state(dwc_otg_pcd_t * pcd)
+{
+#ifdef DEBUG
+       char str[40];
+
+       switch (pcd->ep0state) {
+       case EP0_DISCONNECT:
+               dwc_strcpy(str, "EP0_DISCONNECT");
+               break;
+       case EP0_IDLE:
+               dwc_strcpy(str, "EP0_IDLE");
+               break;
+       case EP0_IN_DATA_PHASE:
+               dwc_strcpy(str, "EP0_IN_DATA_PHASE");
+               break;
+       case EP0_OUT_DATA_PHASE:
+               dwc_strcpy(str, "EP0_OUT_DATA_PHASE");
+               break;
+       case EP0_IN_STATUS_PHASE:
+               dwc_strcpy(str, "EP0_IN_STATUS_PHASE");
+               break;
+       case EP0_OUT_STATUS_PHASE:
+               dwc_strcpy(str, "EP0_OUT_STATUS_PHASE");
+               break;
+       case EP0_STALL:
+               dwc_strcpy(str, "EP0_STALL");
+               break;
+       default:
+               dwc_strcpy(str, "EP0_INVALID");
+       }
+
+       DWC_DEBUGPL(DBG_ANY, "%s(%d)\n", str, pcd->ep0state);
+#endif
+}
+
+/**
+ * This function calculate the size of the payload in the memory 
+ * for out endpoints and prints size for debug purposes(used in 
+ * 2.93a DevOutNak feature).
+ */
+static inline void print_memory_payload(dwc_otg_pcd_t * pcd,  dwc_ep_t * ep)
+{
+#ifdef DEBUG
+       deptsiz_data_t deptsiz_init = {.d32 = 0 };
+       deptsiz_data_t deptsiz_updt = {.d32 = 0 };
+       int pack_num;
+       unsigned payload;
+       
+       deptsiz_init.d32 = pcd->core_if->start_doeptsiz_val[ep->num];
+       deptsiz_updt.d32 =
+               DWC_READ_REG32(&pcd->core_if->dev_if->
+                                               out_ep_regs[ep->num]->doeptsiz);
+       /* Payload will be */
+       payload = deptsiz_init.b.xfersize - deptsiz_updt.b.xfersize;
+       /* Packet count is decremented every time a packet
+        * is written to the RxFIFO not in to the external memory
+        * So, if payload == 0, then it means no packet was sent to ext memory*/
+       pack_num = (!payload) ? 0 : (deptsiz_init.b.pktcnt - deptsiz_updt.b.pktcnt);
+       DWC_DEBUGPL(DBG_PCDV,
+               "Payload for EP%d-%s\n",
+               ep->num, (ep->is_in ? "IN" : "OUT"));
+       DWC_DEBUGPL(DBG_PCDV,
+               "Number of transfered bytes = 0x%08x\n", payload);
+       DWC_DEBUGPL(DBG_PCDV,
+               "Number of transfered packets = %d\n", pack_num);       
+#endif 
+}
+
+
+#ifdef DWC_UTE_CFI
+static inline void print_desc(struct dwc_otg_dma_desc *ddesc,
+                             const uint8_t * epname, int descnum)
+{
+       CFI_INFO
+           ("%s DMA_DESC(%d) buf=0x%08x bytes=0x%04x; sp=0x%x; l=0x%x; sts=0x%02x; bs=0x%02x\n",
+            epname, descnum, ddesc->buf, ddesc->status.b.bytes,
+            ddesc->status.b.sp, ddesc->status.b.l, ddesc->status.b.sts,
+            ddesc->status.b.bs);
+}
+#endif
+
+/**
+ * This function returns pointer to in ep struct with number ep_num
+ */
+static inline dwc_otg_pcd_ep_t *get_in_ep(dwc_otg_pcd_t * pcd, uint32_t ep_num)
+{
+       int i;
+       int num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
+       if (ep_num == 0) {
+               return &pcd->ep0;
+       } else {
+               for (i = 0; i < num_in_eps; ++i) {
+                       if (pcd->in_ep[i].dwc_ep.num == ep_num)
+                               return &pcd->in_ep[i];
+               }
+               return 0;
+       }
+}
+
+/**
+ * This function returns pointer to out ep struct with number ep_num
+ */
+static inline dwc_otg_pcd_ep_t *get_out_ep(dwc_otg_pcd_t * pcd, uint32_t ep_num)
+{
+       int i;
+       int num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
+       if (ep_num == 0) {
+               return &pcd->ep0;
+       } else {
+               for (i = 0; i < num_out_eps; ++i) {
+                       if (pcd->out_ep[i].dwc_ep.num == ep_num)
+                               return &pcd->out_ep[i];
+               }
+               return 0;
+       }
+}
+
+/**
+ * This functions gets a pointer to an EP from the wIndex address
+ * value of the control request.
+ */
+dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * pcd, u16 wIndex)
+{
+       dwc_otg_pcd_ep_t *ep;
+       uint32_t ep_num = UE_GET_ADDR(wIndex);
+
+       if (ep_num == 0) {
+               ep = &pcd->ep0;
+       } else if (UE_GET_DIR(wIndex) == UE_DIR_IN) {   /* in ep */
+               ep = &pcd->in_ep[ep_num - 1];
+       } else {
+               ep = &pcd->out_ep[ep_num - 1];
+       }
+
+       return ep;
+}
+
+/**
+ * This function checks the EP request queue, if the queue is not
+ * empty the next request is started.
+ */
+void start_next_request(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_otg_pcd_request_t *req = 0;
+       uint32_t max_transfer =
+           GET_CORE_IF(ep->pcd)->core_params->max_transfer_size;
+
+#ifdef DWC_UTE_CFI
+       struct dwc_otg_pcd *pcd;
+       pcd = ep->pcd;
+#endif
+
+       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+
+#ifdef DWC_UTE_CFI
+               if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+                       ep->dwc_ep.cfi_req_len = req->length;
+                       pcd->cfi->ops.build_descriptors(pcd->cfi, pcd, ep, req);
+               } else {
+#endif
+                       /* Setup and start the Transfer */
+                       if (req->dw_align_buf) {
+                               ep->dwc_ep.dma_addr = req->dw_align_buf_dma;
+                               ep->dwc_ep.start_xfer_buff = req->dw_align_buf;
+                               ep->dwc_ep.xfer_buff = req->dw_align_buf;
+                       } else {
+                               ep->dwc_ep.dma_addr = req->dma;
+                               ep->dwc_ep.start_xfer_buff = req->buf;
+                               ep->dwc_ep.xfer_buff = req->buf;
+                       }
+                       ep->dwc_ep.sent_zlp = 0;
+                       ep->dwc_ep.total_len = req->length;
+                       ep->dwc_ep.xfer_len = 0;
+                       ep->dwc_ep.xfer_count = 0;
+
+                       ep->dwc_ep.maxxfer = max_transfer;
+                       if (GET_CORE_IF(ep->pcd)->dma_desc_enable) {
+                               uint32_t out_max_xfer = DDMA_MAX_TRANSFER_SIZE
+                                   - (DDMA_MAX_TRANSFER_SIZE % 4);
+                               if (ep->dwc_ep.is_in) {
+                                       if (ep->dwc_ep.maxxfer >
+                                           DDMA_MAX_TRANSFER_SIZE) {
+                                               ep->dwc_ep.maxxfer =
+                                                   DDMA_MAX_TRANSFER_SIZE;
+                                       }
+                               } else {
+                                       if (ep->dwc_ep.maxxfer > out_max_xfer) {
+                                               ep->dwc_ep.maxxfer =
+                                                   out_max_xfer;
+                                       }
+                               }
+                       }
+                       if (ep->dwc_ep.maxxfer < ep->dwc_ep.total_len) {
+                               ep->dwc_ep.maxxfer -=
+                                   (ep->dwc_ep.maxxfer % ep->dwc_ep.maxpacket);
+                       }
+                       if (req->sent_zlp) {
+                               if ((ep->dwc_ep.total_len %
+                                    ep->dwc_ep.maxpacket == 0)
+                                   && (ep->dwc_ep.total_len != 0)) {
+                                       ep->dwc_ep.sent_zlp = 1;
+                               }
+
+                       }
+#ifdef DWC_UTE_CFI
+               }
+#endif
+               dwc_otg_ep_start_transfer(GET_CORE_IF(ep->pcd), &ep->dwc_ep);
+       } else if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+               DWC_PRINTF("There are no more ISOC requests \n");
+               ep->dwc_ep.frame_num = 0xFFFFFFFF;
+       }
+}
+
+/**
+ * This function handles the SOF Interrupts. At this time the SOF
+ * Interrupt is disabled.
+ */
+int32_t dwc_otg_pcd_handle_sof_intr(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+       gintsts_data_t gintsts;
+
+       DWC_DEBUGPL(DBG_PCD, "SOF\n");
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.sofintr = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This function handles the Rx Status Queue Level Interrupt, which
+ * indicates that there is a least one packet in the Rx FIFO.  The
+ * packets are moved from the FIFO to memory, where they will be
+ * processed when the Endpoint Interrupt Register indicates Transfer
+ * Complete or SETUP Phase Done.
+ *
+ * Repeat the following until the Rx Status Queue is empty:
+ *      -# Read the Receive Status Pop Register (GRXSTSP) to get Packet
+ *             info
+ *      -# If Receive FIFO is empty then skip to step Clear the interrupt
+ *             and exit
+ *      -# If SETUP Packet call dwc_otg_read_setup_packet to copy the
+ *             SETUP data to the buffer
+ *      -# If OUT Data Packet call dwc_otg_read_packet to copy the data
+ *             to the destination buffer
+ */
+int32_t dwc_otg_pcd_handle_rx_status_q_level_intr(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       gintmsk_data_t gintmask = {.d32 = 0 };
+       device_grxsts_data_t status;
+       dwc_otg_pcd_ep_t *ep;
+       gintsts_data_t gintsts;
+#ifdef DEBUG
+       static char *dpid_str[] = { "D0", "D2", "D1", "MDATA" };
+#endif
+
+       //DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd);
+       /* Disable the Rx Status Queue Level interrupt */
+       gintmask.b.rxstsqlvl = 1;
+       DWC_MODIFY_REG32(&global_regs->gintmsk, gintmask.d32, 0);
+
+       /* Get the Status from the top of the FIFO */
+       status.d32 = DWC_READ_REG32(&global_regs->grxstsp);
+
+       DWC_DEBUGPL(DBG_PCD, "EP:%d BCnt:%d DPID:%s "
+                   "pktsts:%x Frame:%d(0x%0x)\n",
+                   status.b.epnum, status.b.bcnt,
+                   dpid_str[status.b.dpid],
+                   status.b.pktsts, status.b.fn, status.b.fn);
+       /* Get pointer to EP structure */
+       ep = get_out_ep(pcd, status.b.epnum);
+
+       switch (status.b.pktsts) {
+       case DWC_DSTS_GOUT_NAK:
+               DWC_DEBUGPL(DBG_PCDV, "Global OUT NAK\n");
+               break;
+       case DWC_STS_DATA_UPDT:
+               DWC_DEBUGPL(DBG_PCDV, "OUT Data Packet\n");
+               if (status.b.bcnt && ep->dwc_ep.xfer_buff) {
+                       /** @todo NGS Check for buffer overflow? */
+                       dwc_otg_read_packet(core_if,
+                                           ep->dwc_ep.xfer_buff,
+                                           status.b.bcnt);
+                       ep->dwc_ep.xfer_count += status.b.bcnt;
+                       ep->dwc_ep.xfer_buff += status.b.bcnt;
+               }
+               break;
+       case DWC_STS_XFER_COMP:
+               DWC_DEBUGPL(DBG_PCDV, "OUT Complete\n");
+               break;
+       case DWC_DSTS_SETUP_COMP:
+#ifdef DEBUG_EP0
+               DWC_DEBUGPL(DBG_PCDV, "Setup Complete\n");
+#endif
+               break;
+       case DWC_DSTS_SETUP_UPDT:
+               dwc_otg_read_setup_packet(core_if, pcd->setup_pkt->d32);
+#ifdef DEBUG_EP0
+               DWC_DEBUGPL(DBG_PCD,
+                           "SETUP PKT: %02x.%02x v%04x i%04x l%04x\n",
+                           pcd->setup_pkt->req.bmRequestType,
+                           pcd->setup_pkt->req.bRequest,
+                           UGETW(pcd->setup_pkt->req.wValue),
+                           UGETW(pcd->setup_pkt->req.wIndex),
+                           UGETW(pcd->setup_pkt->req.wLength));
+#endif
+               ep->dwc_ep.xfer_count += status.b.bcnt;
+               break;
+       default:
+               DWC_DEBUGPL(DBG_PCDV, "Invalid Packet Status (0x%0x)\n",
+                           status.b.pktsts);
+               break;
+       }
+
+       /* Enable the Rx Status Queue Level interrupt */
+       DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmask.d32);
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.rxstsqlvl = 1;
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       //DWC_DEBUGPL(DBG_PCDV, "EXIT: %s\n", __func__);
+       return 1;
+}
+
+/**
+ * This function examines the Device IN Token Learning Queue to
+ * determine the EP number of the last IN token received.  This
+ * implementation is for the Mass Storage device where there are only
+ * 2 IN EPs (Control-IN and BULK-IN).
+ *
+ * The EP numbers for the first six IN Tokens are in DTKNQR1 and there
+ * are 8 EP Numbers in each of the other possible DTKNQ Registers.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ *
+ */
+static inline int get_ep_of_last_in_token(dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_device_global_regs_t *dev_global_regs =
+           core_if->dev_if->dev_global_regs;
+       const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
+       /* Number of Token Queue Registers */
+       const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
+       dtknq1_data_t dtknqr1;
+       uint32_t in_tkn_epnums[4];
+       int ndx = 0;
+       int i = 0;
+       volatile uint32_t *addr = &dev_global_regs->dtknqr1;
+       int epnum = 0;
+
+       //DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
+
+       /* Read the DTKNQ Registers */
+       for (i = 0; i < DTKNQ_REG_CNT; i++) {
+               in_tkn_epnums[i] = DWC_READ_REG32(addr);
+               DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1,
+                           in_tkn_epnums[i]);
+               if (addr == &dev_global_regs->dvbusdis) {
+                       addr = &dev_global_regs->dtknqr3_dthrctl;
+               } else {
+                       ++addr;
+               }
+
+       }
+
+       /* Copy the DTKNQR1 data to the bit field. */
+       dtknqr1.d32 = in_tkn_epnums[0];
+       /* Get the EP numbers */
+       in_tkn_epnums[0] = dtknqr1.b.epnums0_5;
+       ndx = dtknqr1.b.intknwptr - 1;
+
+       //DWC_DEBUGPL(DBG_PCDV,"ndx=%d\n",ndx);
+       if (ndx == -1) {
+               /** @todo Find a simpler way to calculate the max
+                * queue position.*/
+               int cnt = TOKEN_Q_DEPTH;
+               if (TOKEN_Q_DEPTH <= 6) {
+                       cnt = TOKEN_Q_DEPTH - 1;
+               } else if (TOKEN_Q_DEPTH <= 14) {
+                       cnt = TOKEN_Q_DEPTH - 7;
+               } else if (TOKEN_Q_DEPTH <= 22) {
+                       cnt = TOKEN_Q_DEPTH - 15;
+               } else {
+                       cnt = TOKEN_Q_DEPTH - 23;
+               }
+               epnum = (in_tkn_epnums[DTKNQ_REG_CNT - 1] >> (cnt * 4)) & 0xF;
+       } else {
+               if (ndx <= 5) {
+                       epnum = (in_tkn_epnums[0] >> (ndx * 4)) & 0xF;
+               } else if (ndx <= 13) {
+                       ndx -= 6;
+                       epnum = (in_tkn_epnums[1] >> (ndx * 4)) & 0xF;
+               } else if (ndx <= 21) {
+                       ndx -= 14;
+                       epnum = (in_tkn_epnums[2] >> (ndx * 4)) & 0xF;
+               } else if (ndx <= 29) {
+                       ndx -= 22;
+                       epnum = (in_tkn_epnums[3] >> (ndx * 4)) & 0xF;
+               }
+       }
+       //DWC_DEBUGPL(DBG_PCD,"epnum=%d\n",epnum);
+       return epnum;
+}
+
+/**
+ * This interrupt occurs when the non-periodic Tx FIFO is half-empty.
+ * The active request is checked for the next packet to be loaded into
+ * the non-periodic Tx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_np_tx_fifo_empty_intr(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       dwc_otg_dev_in_ep_regs_t *ep_regs;
+       gnptxsts_data_t txstatus = {.d32 = 0 };
+       gintsts_data_t gintsts;
+
+       int epnum = 0;
+       dwc_otg_pcd_ep_t *ep = 0;
+       uint32_t len = 0;
+       int dwords;
+
+       /* Get the epnum from the IN Token Learning Queue. */
+       epnum = get_ep_of_last_in_token(core_if);
+       ep = get_in_ep(pcd, epnum);
+
+       DWC_DEBUGPL(DBG_PCD, "NP TxFifo Empty: %d \n", epnum);
+
+       ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+       len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+       if (len > ep->dwc_ep.maxpacket) {
+               len = ep->dwc_ep.maxpacket;
+       }
+       dwords = (len + 3) / 4;
+
+       /* While there is space in the queue and space in the FIFO and
+        * More data to tranfer, Write packets to the Tx FIFO */
+       txstatus.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+       DWC_DEBUGPL(DBG_PCDV, "b4 GNPTXSTS=0x%08x\n", txstatus.d32);
+
+       while (txstatus.b.nptxqspcavail > 0 &&
+              txstatus.b.nptxfspcavail > dwords &&
+              ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len) {
+               /* Write the FIFO */
+               dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
+               len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+               if (len > ep->dwc_ep.maxpacket) {
+                       len = ep->dwc_ep.maxpacket;
+               }
+
+               dwords = (len + 3) / 4;
+               txstatus.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+               DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n", txstatus.d32);
+       }
+
+       DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n",
+                   DWC_READ_REG32(&global_regs->gnptxsts));
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.nptxfempty = 1;
+       DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This function is called when dedicated Tx FIFO Empty interrupt occurs.
+ * The active request is checked for the next packet to be loaded into
+ * apropriate Tx FIFO.
+ */
+static int32_t write_empty_tx_fifo(dwc_otg_pcd_t * pcd, uint32_t epnum)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       dwc_otg_dev_in_ep_regs_t *ep_regs;
+       dtxfsts_data_t txstatus = {.d32 = 0 };
+       dwc_otg_pcd_ep_t *ep = 0;
+       uint32_t len = 0;
+       int dwords;
+
+       ep = get_in_ep(pcd, epnum);
+
+       DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %d \n", epnum);
+
+       ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+       len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+       if (len > ep->dwc_ep.maxpacket) {
+               len = ep->dwc_ep.maxpacket;
+       }
+
+       dwords = (len + 3) / 4;
+
+       /* While there is space in the queue and space in the FIFO and
+        * More data to tranfer, Write packets to the Tx FIFO */
+       txstatus.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+       DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
+
+       while (txstatus.b.txfspcavail > dwords &&
+              ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len &&
+              ep->dwc_ep.xfer_len != 0) {
+               /* Write the FIFO */
+               dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
+
+               len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+               if (len > ep->dwc_ep.maxpacket) {
+                       len = ep->dwc_ep.maxpacket;
+               }
+
+               dwords = (len + 3) / 4;
+               txstatus.d32 =
+                   DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+               DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum,
+                           txstatus.d32);
+       }
+
+       DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum,
+                   DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts));
+
+       return 1;
+}
+
+/**
+ * This function is called when the Device is disconnected. It stops
+ * any active requests and informs the Gadget driver of the
+ * disconnect.
+ */
+void dwc_otg_pcd_stop(dwc_otg_pcd_t * pcd)
+{
+       int i, num_in_eps, num_out_eps;
+       dwc_otg_pcd_ep_t *ep;
+
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_SPINLOCK(pcd->lock);
+
+       num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
+       num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s() \n", __func__);
+       /* don't disconnect drivers more than once */
+       if (pcd->ep0state == EP0_DISCONNECT) {
+               DWC_DEBUGPL(DBG_ANY, "%s() Already Disconnected\n", __func__);
+               DWC_SPINUNLOCK(pcd->lock);
+               return;
+       }
+       pcd->ep0state = EP0_DISCONNECT;
+
+       /* Reset the OTG state. */
+       dwc_otg_pcd_update_otg(pcd, 1);
+
+       /* Disable the NP Tx Fifo Empty Interrupt. */
+       intr_mask.b.nptxfempty = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+                        intr_mask.d32, 0);
+
+       /* Flush the FIFOs */
+       /**@todo NGS Flush Periodic FIFOs */
+       dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd), 0x10);
+       dwc_otg_flush_rx_fifo(GET_CORE_IF(pcd));
+
+       /* prevent new request submissions, kill any outstanding requests  */
+       ep = &pcd->ep0;
+       dwc_otg_request_nuke(ep);
+       /* prevent new request submissions, kill any outstanding requests  */
+       for (i = 0; i < num_in_eps; i++) {
+               dwc_otg_pcd_ep_t *ep = &pcd->in_ep[i];
+               dwc_otg_request_nuke(ep);
+       }
+       /* prevent new request submissions, kill any outstanding requests  */
+       for (i = 0; i < num_out_eps; i++) {
+               dwc_otg_pcd_ep_t *ep = &pcd->out_ep[i];
+               dwc_otg_request_nuke(ep);
+       }
+
+       /* report disconnect; the driver is already quiesced */
+       if (pcd->fops->disconnect) {
+               DWC_SPINUNLOCK(pcd->lock);
+               pcd->fops->disconnect(pcd);
+               DWC_SPINLOCK(pcd->lock);
+       }
+       DWC_SPINUNLOCK(pcd->lock);
+}
+
+/**
+ * This interrupt indicates that ...
+ */
+int32_t dwc_otg_pcd_handle_i2c_intr(dwc_otg_pcd_t * pcd)
+{
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       gintsts_data_t gintsts;
+
+       DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "i2cintr");
+       intr_mask.b.i2cintr = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+                        intr_mask.d32, 0);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.i2cintr = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+       return 1;
+}
+
+/**
+ * This interrupt indicates that ...
+ */
+int32_t dwc_otg_pcd_handle_early_suspend_intr(dwc_otg_pcd_t * pcd)
+{
+       gintsts_data_t gintsts;
+#if defined(VERBOSE)
+       DWC_PRINTF("Early Suspend Detected\n");
+#endif
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.erlysuspend = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+       return 1;
+}
+
+/**
+ * This function configures EPO to receive SETUP packets.
+ *
+ * @todo NGS: Update the comments from the HW FS.
+ *
+ *     -# Program the following fields in the endpoint specific registers
+ *     for Control OUT EP 0, in order to receive a setup packet
+ *     - DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
+ *       setup packets)
+ *     - DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
+ *       to back setup packets)
+ *             - In DMA mode, DOEPDMA0 Register with a memory address to
+ *               store any setup packets received
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param pcd    Programming view of the PCD.
+ */
+static inline void ep0_out_start(dwc_otg_core_if_t * core_if,
+                                dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       deptsiz0_data_t doeptsize0 = {.d32 = 0 };
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       depctl_data_t doepctl = {.d32 = 0 };
+
+#ifdef VERBOSE
+       DWC_DEBUGPL(DBG_PCDV, "%s() doepctl0=%0x\n", __func__,
+                   DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
+#endif
+       if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+               doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl);
+               if (doepctl.b.epena) {
+                       return;
+               }
+       }
+
+       doeptsize0.b.supcnt = 3;
+       doeptsize0.b.pktcnt = 1;
+       doeptsize0.b.xfersize = 8 * 3;
+
+       if (core_if->dma_enable) {
+               if (!core_if->dma_desc_enable) {
+                       /** put here as for Hermes mode deptisz register should not be written */
+                       DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doeptsiz,
+                                       doeptsize0.d32);
+
+                       /** @todo dma needs to handle multiple setup packets (up to 3) */
+                       DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepdma,
+                                       pcd->setup_pkt_dma_handle);
+               } else {
+                       dev_if->setup_desc_index =
+                           (dev_if->setup_desc_index + 1) & 1;
+                       dma_desc =
+                           dev_if->setup_desc_addr[dev_if->setup_desc_index];
+
+                       /** DMA Descriptor Setup */
+                       dma_desc->status.b.bs = BS_HOST_BUSY;
+                       if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+                               dma_desc->status.b.sr = 0;
+                               dma_desc->status.b.mtrf = 0;
+                       }
+                       dma_desc->status.b.l = 1;
+                       dma_desc->status.b.ioc = 1;
+                       dma_desc->status.b.bytes = pcd->ep0.dwc_ep.maxpacket;
+                       dma_desc->buf = pcd->setup_pkt_dma_handle;
+                       dma_desc->status.b.sts = 0;
+                       dma_desc->status.b.bs = BS_HOST_READY;
+
+                       /** DOEPDMA0 Register write */
+                       DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepdma,
+                                       dev_if->dma_setup_desc_addr
+                                       [dev_if->setup_desc_index]);
+               }
+
+       } else {
+               /** put here as for Hermes mode deptisz register should not be written */
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doeptsiz,
+                               doeptsize0.d32);
+       }
+
+       /** DOEPCTL0 Register write cnak will be set after setup interrupt */
+       doepctl.d32 = 0;
+       doepctl.b.epena = 1;
+       if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
+       doepctl.b.cnak = 1;
+       DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+       } else {
+               DWC_MODIFY_REG32(&dev_if->out_ep_regs[0]->doepctl, 0, doepctl.d32);
+       }
+
+#ifdef VERBOSE
+       DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n",
+                   DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
+       DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n",
+                   DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl));
+#endif
+}
+
+/**
+ * This interrupt occurs when a USB Reset is detected. When the USB
+ * Reset Interrupt occurs the device state is set to DEFAULT and the
+ * EP0 state is set to IDLE.
+ *     -#      Set the NAK bit for all OUT endpoints (DOEPCTLn.SNAK = 1)
+ *     -#      Unmask the following interrupt bits
+ *             - DAINTMSK.INEP0 = 1 (Control 0 IN endpoint)
+ *     - DAINTMSK.OUTEP0 = 1 (Control 0 OUT endpoint)
+ *     - DOEPMSK.SETUP = 1
+ *     - DOEPMSK.XferCompl = 1
+ *     - DIEPMSK.XferCompl = 1
+ *     - DIEPMSK.TimeOut = 1
+ *     -# Program the following fields in the endpoint specific registers
+ *     for Control OUT EP 0, in order to receive a setup packet
+ *     - DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
+ *       setup packets)
+ *     - DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
+ *       to back setup packets)
+ *             - In DMA mode, DOEPDMA0 Register with a memory address to
+ *               store any setup packets received
+ * At this point, all the required initialization, except for enabling
+ * the control 0 OUT endpoint is done, for receiving SETUP packets.
+ */
+int32_t dwc_otg_pcd_handle_usb_reset_intr(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       depctl_data_t doepctl = {.d32 = 0 };
+       depctl_data_t diepctl = {.d32 = 0 };
+       daint_data_t daintmsk = {.d32 = 0 };
+       doepmsk_data_t doepmsk = {.d32 = 0 };
+       diepmsk_data_t diepmsk = {.d32 = 0 };
+       dcfg_data_t dcfg = {.d32 = 0 };
+       grstctl_t resetctl = {.d32 = 0 };
+       dctl_data_t dctl = {.d32 = 0 };
+       int i = 0;
+       gintsts_data_t gintsts;
+       pcgcctl_data_t power = {.d32 = 0 };
+
+       power.d32 = DWC_READ_REG32(core_if->pcgcctl);
+       if (power.b.stoppclk) {
+               power.d32 = 0;
+               power.b.stoppclk = 1;
+               DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
+
+               power.b.pwrclmp = 1;
+               DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
+
+               power.b.rstpdwnmodule = 1;
+               DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
+       }
+
+       core_if->lx_state = DWC_OTG_L0;
+
+       DWC_PRINTF("USB RESET\n");
+#ifdef DWC_EN_ISOC
+       for (i = 1; i < 16; ++i) {
+               dwc_otg_pcd_ep_t *ep;
+               dwc_ep_t *dwc_ep;
+               ep = get_in_ep(pcd, i);
+               if (ep != 0) {
+                       dwc_ep = &ep->dwc_ep;
+                       dwc_ep->next_frame = 0xffffffff;
+               }
+       }
+#endif /* DWC_EN_ISOC */
+
+       /* reset the HNP settings */
+       dwc_otg_pcd_update_otg(pcd, 1);
+
+       /* Clear the Remote Wakeup Signalling */
+       dctl.b.rmtwkupsig = 1;
+       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
+
+       /* Set NAK for all OUT EPs */
+       doepctl.b.snak = 1;
+       for (i = 0; i <= dev_if->num_out_eps; i++) {
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, doepctl.d32);
+       }
+
+       /* Flush the NP Tx FIFO */
+       dwc_otg_flush_tx_fifo(core_if, 0x10);
+       /* Flush the Learning Queue */
+       resetctl.b.intknqflsh = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+       if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable) {
+               core_if->start_predict = 0;
+               for (i = 0; i<= core_if->dev_if->num_in_eps; ++i) {
+                       core_if->nextep_seq[i] = 0xff;  // 0xff - EP not active
+               }
+               core_if->nextep_seq[0] = 0;     
+               core_if->first_in_nextep_seq = 0;
+               diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
+               diepctl.b.nextep = 0;
+               DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+               
+               /* Update IN Endpoint Mismatch Count by active IN NP EP count + 1 */
+               dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+               dcfg.b.epmscnt = 2;
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+               DWC_DEBUGPL(DBG_PCDV,
+                           "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+                       __func__, core_if->first_in_nextep_seq);
+               for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+                       DWC_DEBUGPL(DBG_PCDV, "%2d\n", core_if->nextep_seq[i]);
+               }
+       }
+
+       if (core_if->multiproc_int_enable) {
+               daintmsk.b.inep0 = 1;
+               daintmsk.b.outep0 = 1;
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->deachintmsk,
+                               daintmsk.d32);
+
+               doepmsk.b.setup = 1;
+               doepmsk.b.xfercompl = 1;
+               doepmsk.b.ahberr = 1;
+               doepmsk.b.epdisabled = 1;
+
+               if ((core_if->dma_desc_enable) ||
+                   (core_if->dma_enable
+                    && core_if->snpsid >= OTG_CORE_REV_3_00a)) {
+                       doepmsk.b.stsphsercvd = 1;
+               }
+               if (core_if->dma_desc_enable)
+                       doepmsk.b.bna = 1;
+/*             
+               doepmsk.b.babble = 1;
+               doepmsk.b.nyet = 1;
+               
+               if (core_if->dma_enable) {
+                       doepmsk.b.nak = 1;
+               }
+*/
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->doepeachintmsk[0],
+                               doepmsk.d32);
+
+               diepmsk.b.xfercompl = 1;
+               diepmsk.b.timeout = 1;
+               diepmsk.b.epdisabled = 1;
+               diepmsk.b.ahberr = 1;
+               diepmsk.b.intknepmis = 1; 
+               if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
+                       diepmsk.b.intknepmis = 0; 
+
+/*             if (core_if->dma_desc_enable) {
+                       diepmsk.b.bna = 1;
+               }
+*/
+/*             
+               if (core_if->dma_enable) {
+                       diepmsk.b.nak = 1;
+               }
+*/
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->diepeachintmsk[0],
+                               diepmsk.d32);
+       } else {
+               daintmsk.b.inep0 = 1;
+               daintmsk.b.outep0 = 1;
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->daintmsk,
+                               daintmsk.d32);
+
+               doepmsk.b.setup = 1;
+               doepmsk.b.xfercompl = 1;
+               doepmsk.b.ahberr = 1;
+               doepmsk.b.epdisabled = 1;
+
+               if ((core_if->dma_desc_enable) ||
+                   (core_if->dma_enable
+                    && core_if->snpsid >= OTG_CORE_REV_3_00a)) {
+                       doepmsk.b.stsphsercvd = 1;
+               }
+               if (core_if->dma_desc_enable)
+                       doepmsk.b.bna = 1;
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->doepmsk, doepmsk.d32);
+
+               diepmsk.b.xfercompl = 1;
+               diepmsk.b.timeout = 1;
+               diepmsk.b.epdisabled = 1;
+               diepmsk.b.ahberr = 1;
+               if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
+                       diepmsk.b.intknepmis = 0; 
+/*
+               if (core_if->dma_desc_enable) {
+                       diepmsk.b.bna = 1;
+               }
+*/
+
+               DWC_WRITE_REG32(&dev_if->dev_global_regs->diepmsk, diepmsk.d32);
+       }
+
+       /* Reset Device Address */
+       dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+       dcfg.b.devaddr = 0;
+       DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+       /* setup EP0 to receive SETUP packets */
+       if (core_if->snpsid <= OTG_CORE_REV_2_94a)
+               ep0_out_start(core_if, pcd);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.usbreset = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * Get the device speed from the device status register and convert it
+ * to USB speed constant.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static int get_device_speed(dwc_otg_core_if_t * core_if)
+{
+       dsts_data_t dsts;
+       int speed = 0;
+       dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+       switch (dsts.b.enumspd) {
+       case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+               speed = USB_SPEED_HIGH;
+               break;
+       case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+       case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+               speed = USB_SPEED_FULL;
+               break;
+
+       case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+               speed = USB_SPEED_LOW;
+               break;
+       }
+
+       return speed;
+}
+
+/**
+ * Read the device status register and set the device speed in the
+ * data structure.
+ * Set up EP0 to receive SETUP packets by calling dwc_ep0_activate.
+ */
+int32_t dwc_otg_pcd_handle_enum_done_intr(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+       gintsts_data_t gintsts;
+       gusbcfg_data_t gusbcfg;
+       dwc_otg_core_global_regs_t *global_regs =
+           GET_CORE_IF(pcd)->core_global_regs;
+       uint8_t utmi16b, utmi8b;
+       int speed;
+       DWC_DEBUGPL(DBG_PCD, "SPEED ENUM\n");
+
+       if (GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_2_60a) {
+               utmi16b = 6;    //vahrama old value was 6;
+               utmi8b = 9;
+       } else {
+               utmi16b = 4;
+               utmi8b = 8;
+       }
+       dwc_otg_ep0_activate(GET_CORE_IF(pcd), &ep0->dwc_ep);
+       if (GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_3_00a) {
+               ep0_out_start(GET_CORE_IF(pcd), pcd);
+       }
+
+#ifdef DEBUG_EP0
+       print_ep0_state(pcd);
+#endif
+
+       if (pcd->ep0state == EP0_DISCONNECT) {
+               pcd->ep0state = EP0_IDLE;
+       } else if (pcd->ep0state == EP0_STALL) {
+               pcd->ep0state = EP0_IDLE;
+       }
+
+       pcd->ep0state = EP0_IDLE;
+
+       ep0->stopped = 0;
+
+       speed = get_device_speed(GET_CORE_IF(pcd));
+       pcd->fops->connect(pcd, speed);
+
+       /* Set USB turnaround time based on device speed and PHY interface. */
+       gusbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+       if (speed == USB_SPEED_HIGH) {
+               if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
+                   DWC_HWCFG2_HS_PHY_TYPE_ULPI) {
+                       /* ULPI interface */
+                       gusbcfg.b.usbtrdtim = 9;
+               }
+               if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
+                   DWC_HWCFG2_HS_PHY_TYPE_UTMI) {
+                       /* UTMI+ interface */
+                       if (GET_CORE_IF(pcd)->hwcfg4.b.utmi_phy_data_width == 0) {
+                               gusbcfg.b.usbtrdtim = utmi8b;
+                       } else if (GET_CORE_IF(pcd)->hwcfg4.
+                                  b.utmi_phy_data_width == 1) {
+                               gusbcfg.b.usbtrdtim = utmi16b;
+                       } else if (GET_CORE_IF(pcd)->
+                                  core_params->phy_utmi_width == 8) {
+                               gusbcfg.b.usbtrdtim = utmi8b;
+                       } else {
+                               gusbcfg.b.usbtrdtim = utmi16b;
+                       }
+               }
+               if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
+                   DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI) {
+                       /* UTMI+  OR  ULPI interface */
+                       if (gusbcfg.b.ulpi_utmi_sel == 1) {
+                               /* ULPI interface */
+                               gusbcfg.b.usbtrdtim = 9;
+                       } else {
+                               /* UTMI+ interface */
+                               if (GET_CORE_IF(pcd)->
+                                   core_params->phy_utmi_width == 16) {
+                                       gusbcfg.b.usbtrdtim = utmi16b;
+                               } else {
+                                       gusbcfg.b.usbtrdtim = utmi8b;
+                               }
+                       }
+               }
+       } else {
+               /* Full or low speed */
+               gusbcfg.b.usbtrdtim = 9;
+       }
+       DWC_WRITE_REG32(&global_regs->gusbcfg, gusbcfg.d32);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.enumdone = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+       return 1;
+}
+
+/**
+ * This interrupt indicates that the ISO OUT Packet was dropped due to
+ * Rx FIFO full or Rx Status Queue Full.  If this interrupt occurs
+ * read all the data from the Rx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(dwc_otg_pcd_t * pcd)
+{
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       gintsts_data_t gintsts;
+
+       DWC_WARN("INTERRUPT Handler not implemented for %s\n",
+                "ISOC Out Dropped");
+
+       intr_mask.b.isooutdrop = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+                        intr_mask.d32, 0);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.isooutdrop = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates the end of the portion of the micro-frame
+ * for periodic transactions.  If there is a periodic transaction for
+ * the next frame, load the packets into the EP periodic Tx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_end_periodic_frame_intr(dwc_otg_pcd_t * pcd)
+{
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       gintsts_data_t gintsts;
+       DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "EOP");
+
+       intr_mask.b.eopframe = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+                        intr_mask.d32, 0);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.eopframe = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates that EP of the packet on the top of the
+ * non-periodic Tx FIFO does not match EP of the IN Token received.
+ *
+ * The "Device IN Token Queue" Registers are read to determine the
+ * order the IN Tokens have been received. The non-periodic Tx FIFO
+ * is flushed, so it can be reloaded in the order seen in the IN Token
+ * Queue.
+ */
+int32_t dwc_otg_pcd_handle_ep_mismatch_intr(dwc_otg_pcd_t * pcd)
+{
+       gintsts_data_t gintsts;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dctl_data_t dctl;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       if (!core_if->en_multiple_tx_fifo && core_if->dma_enable) {
+               core_if->start_predict = 1;
+       
+               DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
+       
+               gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+               if (!gintsts.b.ginnakeff) {
+                       /* Disable EP Mismatch interrupt */
+                       intr_mask.d32 = 0;
+                       intr_mask.b.epmismatch = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
+                       /* Enable the Global IN NAK Effective Interrupt */
+                       intr_mask.d32 = 0;
+                       intr_mask.b.ginnakeff = 1;
+                       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, intr_mask.d32);
+                       /* Set the global non-periodic IN NAK handshake */
+                       dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+                       dctl.b.sgnpinnak = 1;
+                       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+               } else {
+                       DWC_PRINTF("gintsts.b.ginnakeff = 1! dctl.b.sgnpinnak not set\n");
+               }
+               /* Disabling of all EP's will be done in dwc_otg_pcd_handle_in_nak_effective()
+                * handler after Global IN NAK Effective interrupt will be asserted */
+       }
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.epmismatch = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This interrupt is valid only in DMA mode. This interrupt indicates that the
+ * core has stopped fetching data for IN endpoints due to the unavailability of
+ * TxFIFO space or Request Queue space. This interrupt is used by the
+ * application for an endpoint mismatch algorithm.
+ * 
+ * @param pcd The PCD 
+ */
+int32_t dwc_otg_pcd_handle_ep_fetsusp_intr(dwc_otg_pcd_t * pcd)
+{
+       gintsts_data_t gintsts;
+       gintmsk_data_t gintmsk_data;
+       dctl_data_t dctl;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
+       
+       /* Clear the global non-periodic IN NAK handshake */
+       dctl.d32 = 0;
+       dctl.b.cgnpinnak = 1;
+       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32); 
+       
+       /* Mask GINTSTS.FETSUSP interrupt */
+       gintmsk_data.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+       gintmsk_data.b.fetsusp = 0;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk_data.d32);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.fetsusp = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+/**
+ * This funcion stalls EP0.
+ */
+static inline void ep0_do_stall(dwc_otg_pcd_t * pcd, const int err_val)
+{
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+       usb_device_request_t *ctrl = &pcd->setup_pkt->req;
+       DWC_WARN("req %02x.%02x protocol STALL; err %d\n",
+                ctrl->bmRequestType, ctrl->bRequest, err_val);
+
+       ep0->dwc_ep.is_in = 1;
+       dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep0->dwc_ep);
+       pcd->ep0.stopped = 1;
+       pcd->ep0state = EP0_IDLE;
+       ep0_out_start(GET_CORE_IF(pcd), pcd);
+}
+
+/**
+ * This functions delegates the setup command to the gadget driver.
+ */
+static inline void do_gadget_setup(dwc_otg_pcd_t * pcd,
+                                  usb_device_request_t * ctrl)
+{
+       int ret = 0;
+       DWC_SPINUNLOCK(pcd->lock);
+       ret = pcd->fops->setup(pcd, (uint8_t *) ctrl);
+       DWC_SPINLOCK(pcd->lock);
+       if (ret < 0) {
+               ep0_do_stall(pcd, ret);
+       }
+
+       /** @todo This is a g_file_storage gadget driver specific
+        * workaround: a DELAYED_STATUS result from the fsg_setup
+        * routine will result in the gadget queueing a EP0 IN status
+        * phase for a two-stage control transfer. Exactly the same as
+        * a SET_CONFIGURATION/SET_INTERFACE except that this is a class
+        * specific request.  Need a generic way to know when the gadget
+        * driver will queue the status phase. Can we assume when we
+        * call the gadget driver setup() function that it will always
+        * queue and require the following flag? Need to look into
+        * this.
+        */
+
+       if (ret == 256 + 999) {
+               pcd->request_config = 1;
+       }
+}
+
+#ifdef DWC_UTE_CFI
+/**
+ * This functions delegates the CFI setup commands to the gadget driver.
+ * This function will return a negative value to indicate a failure.
+ */
+static inline int cfi_gadget_setup(dwc_otg_pcd_t * pcd,
+                                  struct cfi_usb_ctrlrequest *ctrl_req)
+{
+       int ret = 0;
+
+       if (pcd->fops && pcd->fops->cfi_setup) {
+               DWC_SPINUNLOCK(pcd->lock);
+               ret = pcd->fops->cfi_setup(pcd, ctrl_req);
+               DWC_SPINLOCK(pcd->lock);
+               if (ret < 0) {
+                       ep0_do_stall(pcd, ret);
+                       return ret;
+               }
+       }
+
+       return ret;
+}
+#endif
+
+/**
+ * This function starts the Zero-Length Packet for the IN status phase
+ * of a 2 stage control transfer.
+ */
+static inline void do_setup_in_status_phase(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+       if (pcd->ep0state == EP0_STALL) {
+               return;
+       }
+
+       pcd->ep0state = EP0_IN_STATUS_PHASE;
+
+       /* Prepare for more SETUP Packets */
+       DWC_DEBUGPL(DBG_PCD, "EP0 IN ZLP\n");
+       if ((GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_3_00a)
+           && (pcd->core_if->dma_desc_enable)
+           && (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len)) {
+               DWC_DEBUGPL(DBG_PCDV,
+                           "Data terminated wait next packet in out_desc_addr\n");
+               pcd->backup_buf = phys_to_virt(ep0->dwc_ep.dma_addr);
+               pcd->data_terminated = 1;
+       }
+       ep0->dwc_ep.xfer_len = 0;
+       ep0->dwc_ep.xfer_count = 0;
+       ep0->dwc_ep.is_in = 1;
+       ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
+       dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+       /* Prepare for more SETUP Packets */
+       //ep0_out_start(GET_CORE_IF(pcd), pcd);
+}
+
+/**
+ * This function starts the Zero-Length Packet for the OUT status phase
+ * of a 2 stage control transfer.
+ */
+static inline void do_setup_out_status_phase(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+       if (pcd->ep0state == EP0_STALL) {
+               DWC_DEBUGPL(DBG_PCD, "EP0 STALLED\n");
+               return;
+       }
+       pcd->ep0state = EP0_OUT_STATUS_PHASE;
+
+       DWC_DEBUGPL(DBG_PCD, "EP0 OUT ZLP\n");
+       ep0->dwc_ep.xfer_len = 0;
+       ep0->dwc_ep.xfer_count = 0;
+       ep0->dwc_ep.is_in = 0;
+       ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
+       dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+       /* Prepare for more SETUP Packets */
+       if (GET_CORE_IF(pcd)->dma_enable == 0) {
+               ep0_out_start(GET_CORE_IF(pcd), pcd);
+       }
+}
+
+/**
+ * Clear the EP halt (STALL) and if pending requests start the
+ * transfer.
+ */
+static inline void pcd_clear_halt(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep)
+{
+       if (ep->dwc_ep.stall_clear_flag == 0)
+               dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+
+       /* Reactive the EP */
+       dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
+       if (ep->stopped) {
+               ep->stopped = 0;
+               /* If there is a request in the EP queue start it */
+
+               /** @todo FIXME: this causes an EP mismatch in DMA mode.
+                * epmismatch not yet implemented. */
+
+               /*
+                * Above fixme is solved by implmenting a tasklet to call the
+                * start_next_request(), outside of interrupt context at some
+                * time after the current time, after a clear-halt setup packet.
+                * Still need to implement ep mismatch in the future if a gadget
+                * ever uses more than one endpoint at once
+                */
+               ep->queue_sof = 1;
+               DWC_TASK_SCHEDULE(pcd->start_xfer_tasklet);
+       }
+       /* Start Control Status Phase */
+       do_setup_in_status_phase(pcd);
+}
+
+/**
+ * This function is called when the SET_FEATURE TEST_MODE Setup packet
+ * is sent from the host.  The Device Control register is written with
+ * the Test Mode bits set to the specified Test Mode.  This is done as
+ * a tasklet so that the "Status" phase of the control transfer
+ * completes before transmitting the TEST packets.
+ *
+ * @todo This has not been tested since the tasklet struct was put
+ * into the PCD struct!
+ *
+ */
+void do_test_mode(void *data)
+{
+       dctl_data_t dctl;
+       dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) data;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       int test_mode = pcd->test_mode;
+
+//        DWC_WARN("%s() has not been tested since being rewritten!\n", __func__);
+
+       dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+       switch (test_mode) {
+       case 1:         // TEST_J
+               dctl.b.tstctl = 1;
+               break;
+
+       case 2:         // TEST_K
+               dctl.b.tstctl = 2;
+               break;
+
+       case 3:         // TEST_SE0_NAK
+               dctl.b.tstctl = 3;
+               break;
+
+       case 4:         // TEST_PACKET
+               dctl.b.tstctl = 4;
+               break;
+
+       case 5:         // TEST_FORCE_ENABLE
+               dctl.b.tstctl = 5;
+               break;
+       }
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+}
+
+/**
+ * This function process the GET_STATUS Setup Commands.
+ */
+static inline void do_get_status(dwc_otg_pcd_t * pcd)
+{
+       usb_device_request_t ctrl = pcd->setup_pkt->req;
+       dwc_otg_pcd_ep_t *ep;
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+       uint16_t *status = pcd->status_buf;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+#ifdef DEBUG_EP0
+       DWC_DEBUGPL(DBG_PCD,
+                   "GET_STATUS %02x.%02x v%04x i%04x l%04x\n",
+                   ctrl.bmRequestType, ctrl.bRequest,
+                   UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+                   UGETW(ctrl.wLength));
+#endif
+
+       switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
+       case UT_DEVICE:
+               if(UGETW(ctrl.wIndex) == 0xF000) { /* OTG Status selector */
+                       DWC_PRINTF("wIndex - %d\n", UGETW(ctrl.wIndex));
+                       DWC_PRINTF("OTG VERSION - %d\n", core_if->otg_ver);
+                       DWC_PRINTF("OTG CAP - %d, %d\n",
+                                  core_if->core_params->otg_cap,
+                                               DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
+                       if (core_if->otg_ver == 1
+                           && core_if->core_params->otg_cap ==
+                           DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+                               uint8_t *otgsts = (uint8_t*)pcd->status_buf;
+                               *otgsts = (core_if->otg_sts & 0x1);
+                               pcd->ep0_pending = 1;
+                               ep0->dwc_ep.start_xfer_buff =
+                                   (uint8_t *) otgsts;
+                               ep0->dwc_ep.xfer_buff = (uint8_t *) otgsts;
+                               ep0->dwc_ep.dma_addr =
+                                   pcd->status_buf_dma_handle;
+                               ep0->dwc_ep.xfer_len = 1;
+                               ep0->dwc_ep.xfer_count = 0;
+                               ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
+                               dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd),
+                                                          &ep0->dwc_ep);
+                               return;
+                       } else {
+                               ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                               return;
+                       }
+                       break;
+               } else {
+                       *status = 0x1;  /* Self powered */
+                       *status |= pcd->remote_wakeup_enable << 1;
+                       break;
+               }
+       case UT_INTERFACE:
+               *status = 0;
+               break;
+
+       case UT_ENDPOINT:
+               ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
+               if (ep == 0 || UGETW(ctrl.wLength) > 2) {
+                       ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                       return;
+               }
+               /** @todo check for EP stall */
+               *status = ep->stopped;
+               break;
+       }
+       pcd->ep0_pending = 1;
+       ep0->dwc_ep.start_xfer_buff = (uint8_t *) status;
+       ep0->dwc_ep.xfer_buff = (uint8_t *) status;
+       ep0->dwc_ep.dma_addr = pcd->status_buf_dma_handle;
+       ep0->dwc_ep.xfer_len = 2;
+       ep0->dwc_ep.xfer_count = 0;
+       ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
+       dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+}
+
+/**
+ * This function process the SET_FEATURE Setup Commands.
+ */
+static inline void do_set_feature(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+       usb_device_request_t ctrl = pcd->setup_pkt->req;
+       dwc_otg_pcd_ep_t *ep = 0;
+       int32_t otg_cap_param = core_if->core_params->otg_cap;
+       gotgctl_data_t gotgctl = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_PCD, "SET_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
+                   ctrl.bmRequestType, ctrl.bRequest,
+                   UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+                   UGETW(ctrl.wLength));
+       DWC_DEBUGPL(DBG_PCD, "otg_cap=%d\n", otg_cap_param);
+
+       switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
+       case UT_DEVICE:
+               switch (UGETW(ctrl.wValue)) {
+               case UF_DEVICE_REMOTE_WAKEUP:
+                       pcd->remote_wakeup_enable = 1;
+                       break;
+
+               case UF_TEST_MODE:
+                       /* Setup the Test Mode tasklet to do the Test
+                        * Packet generation after the SETUP Status
+                        * phase has completed. */
+
+                       /** @todo This has not been tested since the
+                        * tasklet struct was put into the PCD
+                        * struct! */
+                       pcd->test_mode = UGETW(ctrl.wIndex) >> 8;
+                       DWC_TASK_SCHEDULE(pcd->test_mode_tasklet);
+                       break;
+
+               case UF_DEVICE_B_HNP_ENABLE:
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "SET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n");
+
+                       /* dev may initiate HNP */
+                       if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+                               pcd->b_hnp_enable = 1;
+                               dwc_otg_pcd_update_otg(pcd, 0);
+                               DWC_DEBUGPL(DBG_PCD, "Request B HNP\n");
+                               /**@todo Is the gotgctl.devhnpen cleared
+                                * by a USB Reset? */
+                               gotgctl.b.devhnpen = 1;
+                               gotgctl.b.hnpreq = 1;
+                               DWC_WRITE_REG32(&global_regs->gotgctl,
+                                               gotgctl.d32);
+                       } else {
+                               ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                               return;
+                       }
+                       break;
+
+               case UF_DEVICE_A_HNP_SUPPORT:
+                       /* RH port supports HNP */
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "SET_FEATURE: USB_DEVICE_A_HNP_SUPPORT\n");
+                       if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+                               pcd->a_hnp_support = 1;
+                               dwc_otg_pcd_update_otg(pcd, 0);
+                       } else {
+                               ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                               return;
+                       }
+                       break;
+
+               case UF_DEVICE_A_ALT_HNP_SUPPORT:
+                       /* other RH port does */
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "SET_FEATURE: USB_DEVICE_A_ALT_HNP_SUPPORT\n");
+                       if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+                               pcd->a_alt_hnp_support = 1;
+                               dwc_otg_pcd_update_otg(pcd, 0);
+                       } else {
+                               ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                               return;
+                       }
+                       break;
+
+               default:
+                       ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                       return;
+
+               }
+               do_setup_in_status_phase(pcd);
+               break;
+
+       case UT_INTERFACE:
+               do_gadget_setup(pcd, &ctrl);
+               break;
+
+       case UT_ENDPOINT:
+               if (UGETW(ctrl.wValue) == UF_ENDPOINT_HALT) {
+                       ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
+                       if (ep == 0) {
+                               ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                               return;
+                       }
+                       ep->stopped = 1;
+                       dwc_otg_ep_set_stall(core_if, &ep->dwc_ep);
+               }
+               do_setup_in_status_phase(pcd);
+               break;
+       }
+}
+
+/**
+ * This function process the CLEAR_FEATURE Setup Commands.
+ */
+static inline void do_clear_feature(dwc_otg_pcd_t * pcd)
+{
+       usb_device_request_t ctrl = pcd->setup_pkt->req;
+       dwc_otg_pcd_ep_t *ep = 0;
+
+       DWC_DEBUGPL(DBG_PCD,
+                   "CLEAR_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
+                   ctrl.bmRequestType, ctrl.bRequest,
+                   UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+                   UGETW(ctrl.wLength));
+
+       switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
+       case UT_DEVICE:
+               switch (UGETW(ctrl.wValue)) {
+               case UF_DEVICE_REMOTE_WAKEUP:
+                       pcd->remote_wakeup_enable = 0;
+                       break;
+
+               case UF_TEST_MODE:
+                       /** @todo Add CLEAR_FEATURE for TEST modes. */
+                       break;
+
+               default:
+                       ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                       return;
+               }
+               do_setup_in_status_phase(pcd);
+               break;
+
+       case UT_ENDPOINT:
+               ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
+               if (ep == 0) {
+                       ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+                       return;
+               }
+
+               pcd_clear_halt(pcd, ep);
+
+               break;
+       }
+}
+
+/**
+ * This function process the SET_ADDRESS Setup Commands.
+ */
+static inline void do_set_address(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+       usb_device_request_t ctrl = pcd->setup_pkt->req;
+
+       if (ctrl.bmRequestType == UT_DEVICE) {
+               dcfg_data_t dcfg = {.d32 = 0 };
+
+#ifdef DEBUG_EP0
+//                      DWC_DEBUGPL(DBG_PCDV, "SET_ADDRESS:%d\n", ctrl.wValue);
+#endif
+               dcfg.b.devaddr = UGETW(ctrl.wValue);
+               DWC_MODIFY_REG32(&dev_if->dev_global_regs->dcfg, 0, dcfg.d32);
+               do_setup_in_status_phase(pcd);
+       }
+}
+
+/**
+ *     This function processes SETUP commands. In Linux, the USB Command
+ *     processing is done in two places - the first being the PCD and the
+ *     second in the Gadget Driver (for example, the File-Backed Storage
+ *     Gadget Driver).
+ *
+ * <table>
+ * <tr><td>Command     </td><td>Driver </td><td>Description</td></tr>
+ *
+ * <tr><td>GET_STATUS </td><td>PCD </td><td>Command is processed as
+ * defined in chapter 9 of the USB 2.0 Specification chapter 9
+ * </td></tr>
+ *
+ * <tr><td>CLEAR_FEATURE </td><td>PCD </td><td>The Device and Endpoint
+ * requests are the ENDPOINT_HALT feature is procesed, all others the
+ * interface requests are ignored.</td></tr>
+ *
+ * <tr><td>SET_FEATURE </td><td>PCD </td><td>The Device and Endpoint
+ * requests are processed by the PCD.  Interface requests are passed
+ * to the Gadget Driver.</td></tr>
+ *
+ * <tr><td>SET_ADDRESS </td><td>PCD </td><td>Program the DCFG reg,
+ * with device address received </td></tr>
+ *
+ * <tr><td>GET_DESCRIPTOR </td><td>Gadget Driver </td><td>Return the
+ * requested descriptor</td></tr>
+ *
+ * <tr><td>SET_DESCRIPTOR </td><td>Gadget Driver </td><td>Optional -
+ * not implemented by any of the existing Gadget Drivers.</td></tr>
+ *
+ * <tr><td>SET_CONFIGURATION </td><td>Gadget Driver </td><td>Disable
+ * all EPs and enable EPs for new configuration.</td></tr>
+ *
+ * <tr><td>GET_CONFIGURATION </td><td>Gadget Driver </td><td>Return
+ * the current configuration</td></tr>
+ *
+ * <tr><td>SET_INTERFACE </td><td>Gadget Driver </td><td>Disable all
+ * EPs and enable EPs for new configuration.</td></tr>
+ *
+ * <tr><td>GET_INTERFACE </td><td>Gadget Driver </td><td>Return the
+ * current interface.</td></tr>
+ *
+ * <tr><td>SYNC_FRAME </td><td>PCD </td><td>Display debug
+ * message.</td></tr>
+ * </table>
+ *
+ * When the SETUP Phase Done interrupt occurs, the PCD SETUP commands are
+ * processed by pcd_setup. Calling the Function Driver's setup function from
+ * pcd_setup processes the gadget SETUP commands.
+ */
+static inline void pcd_setup(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       usb_device_request_t ctrl = pcd->setup_pkt->req;
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+
+       deptsiz0_data_t doeptsize0 = {.d32 = 0 };
+
+#ifdef DWC_UTE_CFI
+       int retval = 0;
+       struct cfi_usb_ctrlrequest cfi_req;
+#endif
+
+       doeptsize0.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doeptsiz);
+
+       /** In BDMA more then 1 setup packet is not supported till 3.00a */
+       if (core_if->dma_enable && core_if->dma_desc_enable == 0
+           && (doeptsize0.b.supcnt < 2)
+           && (core_if->snpsid < OTG_CORE_REV_2_94a)) {
+               DWC_ERROR
+                   ("\n\n-----------    CANNOT handle > 1 setup packet in DMA mode\n\n");
+       }
+       if ((core_if->snpsid >= OTG_CORE_REV_3_00a)
+           && (core_if->dma_enable == 1) && (core_if->dma_desc_enable == 0)) {
+               ctrl =
+                   (pcd->setup_pkt +
+                    (3 - doeptsize0.b.supcnt - 1 +
+                     ep0->dwc_ep.stp_rollover))->req;
+       }
+#ifdef DEBUG_EP0
+       DWC_DEBUGPL(DBG_PCD, "SETUP %02x.%02x v%04x i%04x l%04x\n",
+                   ctrl.bmRequestType, ctrl.bRequest,
+                   UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+                   UGETW(ctrl.wLength));
+#endif
+
+       /* Clean up the request queue */
+       dwc_otg_request_nuke(ep0);
+       ep0->stopped = 0;
+
+       if (ctrl.bmRequestType & UE_DIR_IN) {
+               ep0->dwc_ep.is_in = 1;
+               pcd->ep0state = EP0_IN_DATA_PHASE;
+       } else {
+               ep0->dwc_ep.is_in = 0;
+               pcd->ep0state = EP0_OUT_DATA_PHASE;
+       }
+
+       if (UGETW(ctrl.wLength) == 0) {
+               ep0->dwc_ep.is_in = 1;
+               pcd->ep0state = EP0_IN_STATUS_PHASE;
+       }
+
+       if (UT_GET_TYPE(ctrl.bmRequestType) != UT_STANDARD) {
+
+#ifdef DWC_UTE_CFI
+               DWC_MEMCPY(&cfi_req, &ctrl, sizeof(usb_device_request_t));
+
+               //printk(KERN_ALERT "CFI: req_type=0x%02x; req=0x%02x\n", 
+                               ctrl.bRequestType, ctrl.bRequest);
+               if (UT_GET_TYPE(cfi_req.bRequestType) == UT_VENDOR) {
+                       if (cfi_req.bRequest > 0xB0 && cfi_req.bRequest < 0xBF) {
+                               retval = cfi_setup(pcd, &cfi_req);
+                               if (retval < 0) {
+                                       ep0_do_stall(pcd, retval);
+                                       pcd->ep0_pending = 0;
+                                       return;
+                               }
+
+                               /* if need gadget setup then call it and check the retval */
+                               if (pcd->cfi->need_gadget_att) {
+                                       retval =
+                                           cfi_gadget_setup(pcd,
+                                                            &pcd->
+                                                            cfi->ctrl_req);
+                                       if (retval < 0) {
+                                               pcd->ep0_pending = 0;
+                                               return;
+                                       }
+                               }
+
+                               if (pcd->cfi->need_status_in_complete) {
+                                       do_setup_in_status_phase(pcd);
+                               }
+                               return;
+                       }
+               }
+#endif
+
+               /* handle non-standard (class/vendor) requests in the gadget driver */
+               do_gadget_setup(pcd, &ctrl);
+               return;
+       }
+
+       /** @todo NGS: Handle bad setup packet? */
+
+///////////////////////////////////////////
+//// --- Standard Request handling --- ////
+
+       switch (ctrl.bRequest) {
+       case UR_GET_STATUS:
+               do_get_status(pcd);
+               break;
+
+       case UR_CLEAR_FEATURE:
+               do_clear_feature(pcd);
+               break;
+
+       case UR_SET_FEATURE:
+               do_set_feature(pcd);
+               break;
+
+       case UR_SET_ADDRESS:
+               do_set_address(pcd);
+               break;
+
+       case UR_SET_INTERFACE:
+       case UR_SET_CONFIG:
+//              _pcd->request_config = 1;       /* Configuration changed */
+               do_gadget_setup(pcd, &ctrl);
+               break;
+
+       case UR_SYNCH_FRAME:
+               do_gadget_setup(pcd, &ctrl);
+               break;
+
+       default:
+               /* Call the Gadget Driver's setup functions */
+               do_gadget_setup(pcd, &ctrl);
+               break;
+       }
+}
+
+/**
+ * This function completes the ep0 control transfer.
+ */
+static int32_t ep0_complete_request(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       dwc_otg_dev_in_ep_regs_t *in_ep_regs =
+           dev_if->in_ep_regs[ep->dwc_ep.num];
+#ifdef DEBUG_EP0
+       dwc_otg_dev_out_ep_regs_t *out_ep_regs =
+           dev_if->out_ep_regs[ep->dwc_ep.num];
+#endif
+       deptsiz0_data_t deptsiz;
+       dev_dma_desc_sts_t desc_sts;
+       dwc_otg_pcd_request_t *req;
+       int is_last = 0;
+       dwc_otg_pcd_t *pcd = ep->pcd;
+
+#ifdef DWC_UTE_CFI
+       struct cfi_usb_ctrlrequest *ctrlreq;
+       int retval = -DWC_E_NOT_SUPPORTED;
+#endif
+
+        desc_sts.b.bytes = 0;
+        
+       if (pcd->ep0_pending && DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               if (ep->dwc_ep.is_in) {
+#ifdef DEBUG_EP0
+                       DWC_DEBUGPL(DBG_PCDV, "Do setup OUT status phase\n");
+#endif
+                       do_setup_out_status_phase(pcd);
+               } else {
+#ifdef DEBUG_EP0
+                       DWC_DEBUGPL(DBG_PCDV, "Do setup IN status phase\n");
+#endif
+
+#ifdef DWC_UTE_CFI
+                       ctrlreq = &pcd->cfi->ctrl_req;
+
+                       if (UT_GET_TYPE(ctrlreq->bRequestType) == UT_VENDOR) {
+                               if (ctrlreq->bRequest > 0xB0
+                                   && ctrlreq->bRequest < 0xBF) {
+
+                                       /* Return if the PCD failed to handle the request */
+                                       if ((retval =
+                                            pcd->cfi->ops.
+                                            ctrl_write_complete(pcd->cfi,
+                                                                pcd)) < 0) {
+                                               CFI_INFO
+                                                   ("ERROR setting a new value in the PCD(%d)\n",
+                                                    retval);
+                                               ep0_do_stall(pcd, retval);
+                                               pcd->ep0_pending = 0;
+                                               return 0;
+                                       }
+
+                                       /* If the gadget needs to be notified on the request */
+                                       if (pcd->cfi->need_gadget_att == 1) {
+                                               //retval = do_gadget_setup(pcd, &pcd->cfi->ctrl_req);
+                                               retval =
+                                                   cfi_gadget_setup(pcd,
+                                                                    &pcd->cfi->
+                                                                    ctrl_req);
+
+                                               /* Return from the function if the gadget failed to process
+                                                * the request properly - this should never happen !!!
+                                                */
+                                               if (retval < 0) {
+                                                       CFI_INFO
+                                                           ("ERROR setting a new value in the gadget(%d)\n",
+                                                            retval);
+                                                       pcd->ep0_pending = 0;
+                                                       return 0;
+                                               }
+                                       }
+
+                                       CFI_INFO("%s: RETVAL=%d\n", __func__,
+                                                retval);
+                                       /* If we hit here then the PCD and the gadget has properly
+                                        * handled the request - so send the ZLP IN to the host.
+                                        */
+                                       /* @todo: MAS - decide whether we need to start the setup
+                                        * stage based on the need_setup value of the cfi object
+                                        */
+                                       do_setup_in_status_phase(pcd);
+                                       pcd->ep0_pending = 0;
+                                       return 1;
+                               }
+                       }
+#endif
+
+                       do_setup_in_status_phase(pcd);
+               }
+               pcd->ep0_pending = 0;
+               return 1;
+       }
+
+       if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               return 0;
+       }
+       req = DWC_CIRCLEQ_FIRST(&ep->queue);
+
+       if (pcd->ep0state == EP0_OUT_STATUS_PHASE
+           || pcd->ep0state == EP0_IN_STATUS_PHASE) {
+               is_last = 1;
+       } else if (ep->dwc_ep.is_in) {
+               deptsiz.d32 = DWC_READ_REG32(&in_ep_regs->dieptsiz);
+               if (core_if->dma_desc_enable != 0)
+                       desc_sts = dev_if->in_desc_addr->status;
+#ifdef DEBUG_EP0
+               DWC_DEBUGPL(DBG_PCDV, "%d len=%d  xfersize=%d pktcnt=%d\n",
+                           ep->dwc_ep.num, ep->dwc_ep.xfer_len,
+                           deptsiz.b.xfersize, deptsiz.b.pktcnt);
+#endif
+
+               if (((core_if->dma_desc_enable == 0)
+                    && (deptsiz.b.xfersize == 0))
+                   || ((core_if->dma_desc_enable != 0)
+                       && (desc_sts.b.bytes == 0))) {
+                       req->actual = ep->dwc_ep.xfer_count;
+                       /* Is a Zero Len Packet needed? */
+                       if (req->sent_zlp) {
+#ifdef DEBUG_EP0
+                               DWC_DEBUGPL(DBG_PCD, "Setup Rx ZLP\n");
+#endif
+                               req->sent_zlp = 0;
+                       }
+                       do_setup_out_status_phase(pcd);
+               }
+       } else {
+               /* ep0-OUT */
+#ifdef DEBUG_EP0
+               deptsiz.d32 = DWC_READ_REG32(&out_ep_regs->doeptsiz);
+               DWC_DEBUGPL(DBG_PCDV, "%d len=%d xsize=%d pktcnt=%d\n",
+                           ep->dwc_ep.num, ep->dwc_ep.xfer_len,
+                           deptsiz.b.xfersize, deptsiz.b.pktcnt);
+#endif
+               req->actual = ep->dwc_ep.xfer_count;
+
+               /* Is a Zero Len Packet needed? */
+               if (req->sent_zlp) {
+#ifdef DEBUG_EP0
+                       DWC_DEBUGPL(DBG_PCDV, "Setup Tx ZLP\n");
+#endif
+                       req->sent_zlp = 0;
+               }
+               /* For older cores do setup in status phase in Slave/BDMA modes,
+                * starting from 3.00 do that only in slave, and for DMA modes
+                * just re-enable ep 0 OUT here*/
+               if (core_if->dma_enable == 0
+                   || (core_if->dma_desc_enable == 0
+                       && core_if->snpsid <= OTG_CORE_REV_2_94a)) {
+                       do_setup_in_status_phase(pcd);
+               } else if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "Enable out ep before in status phase\n");
+                       ep0_out_start(core_if, pcd);
+               }
+       }
+
+       /* Complete the request */
+       if (is_last) {
+               dwc_otg_request_done(ep, req, 0);
+               ep->dwc_ep.start_xfer_buff = 0;
+               ep->dwc_ep.xfer_buff = 0;
+               ep->dwc_ep.xfer_len = 0;
+               return 1;
+       }
+       return 0;
+}
+
+#ifdef DWC_UTE_CFI
+/**
+ * This function calculates traverses all the CFI DMA descriptors and
+ * and accumulates the bytes that are left to be transfered.
+ *
+ * @return The total bytes left to transfered, or a negative value as failure
+ */
+static inline int cfi_calc_desc_residue(dwc_otg_pcd_ep_t * ep)
+{
+       int32_t ret = 0;
+       int i;
+       struct dwc_otg_dma_desc *ddesc = NULL;
+       struct cfi_ep *cfiep;
+
+       /* See if the pcd_ep has its respective cfi_ep mapped */
+       cfiep = get_cfi_ep_by_pcd_ep(ep->pcd->cfi, ep);
+       if (!cfiep) {
+               CFI_INFO("%s: Failed to find ep\n", __func__);
+               return -1;
+       }
+
+       ddesc = ep->dwc_ep.descs;
+
+       for (i = 0; (i < cfiep->desc_count) && (i < MAX_DMA_DESCS_PER_EP); i++) {
+
+#if defined(PRINT_CFI_DMA_DESCS)
+               print_desc(ddesc, ep->ep.name, i);
+#endif
+               ret += ddesc->status.b.bytes;
+               ddesc++;
+       }
+
+       if (ret)
+               CFI_INFO("!!!!!!!!!! WARNING (%s) - residue=%d\n", __func__,
+                        ret);
+
+       return ret;
+}
+#endif
+
+/**
+ * This function completes the request for the EP. If there are
+ * additional requests for the EP in the queue they will be started.
+ */
+static void complete_ep(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       dwc_otg_dev_in_ep_regs_t *in_ep_regs =
+           dev_if->in_ep_regs[ep->dwc_ep.num];
+       deptsiz_data_t deptsiz;
+       dev_dma_desc_sts_t desc_sts;
+       dwc_otg_pcd_request_t *req = 0;
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       uint32_t byte_count = 0;
+       int is_last = 0;
+       int i;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s() %d-%s\n", __func__, ep->dwc_ep.num,
+                   (ep->dwc_ep.is_in ? "IN" : "OUT"));
+
+       /* Get any pending requests */
+       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+               if (!req) {
+                       DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
+                       return;
+               }
+       } else {
+               DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
+               return;
+       }
+
+       DWC_DEBUGPL(DBG_PCD, "Requests %d\n", ep->pcd->request_pending);
+
+       if (ep->dwc_ep.is_in) {
+               deptsiz.d32 = DWC_READ_REG32(&in_ep_regs->dieptsiz);
+
+               if (core_if->dma_enable) {
+                       if (core_if->dma_desc_enable == 0) {
+                               if (deptsiz.b.xfersize == 0
+                                   && deptsiz.b.pktcnt == 0) {
+                                       byte_count =
+                                           ep->dwc_ep.xfer_len -
+                                           ep->dwc_ep.xfer_count;
+
+                                       ep->dwc_ep.xfer_buff += byte_count;
+                                       ep->dwc_ep.dma_addr += byte_count;
+                                       ep->dwc_ep.xfer_count += byte_count;
+
+                                       DWC_DEBUGPL(DBG_PCDV,
+                                                   "%d-%s len=%d  xfersize=%d pktcnt=%d\n",
+                                                   ep->dwc_ep.num,
+                                                   (ep->dwc_ep.
+                                                    is_in ? "IN" : "OUT"),
+                                                   ep->dwc_ep.xfer_len,
+                                                   deptsiz.b.xfersize,
+                                                   deptsiz.b.pktcnt);
+
+                                       if (ep->dwc_ep.xfer_len <
+                                           ep->dwc_ep.total_len) {
+                                               dwc_otg_ep_start_transfer
+                                                   (core_if, &ep->dwc_ep);
+                                       } else if (ep->dwc_ep.sent_zlp) {
+                                               /*     
+                                                * This fragment of code should initiate 0
+                                                * length transfer in case if it is queued
+                                                * a transfer with size divisible to EPs max
+                                                * packet size and with usb_request zero field
+                                                * is set, which means that after data is transfered,
+                                                * it is also should be transfered
+                                                * a 0 length packet at the end. For Slave and
+                                                * Buffer DMA modes in this case SW has
+                                                * to initiate 2 transfers one with transfer size,
+                                                * and the second with 0 size. For Descriptor
+                                                * DMA mode SW is able to initiate a transfer,
+                                                * which will handle all the packets including
+                                                * the last  0 length.
+                                                */
+                                               ep->dwc_ep.sent_zlp = 0;
+                                               dwc_otg_ep_start_zl_transfer
+                                                   (core_if, &ep->dwc_ep);
+                                       } else {
+                                               is_last = 1;
+                                       }
+                               } else {
+                                       if (ep->dwc_ep.type ==
+                                           DWC_OTG_EP_TYPE_ISOC) {
+                                               req->actual = 0;
+                                               dwc_otg_request_done(ep, req, 0);
+
+                                               ep->dwc_ep.start_xfer_buff = 0;
+                                               ep->dwc_ep.xfer_buff = 0;
+                                               ep->dwc_ep.xfer_len = 0;
+
+                                               /* If there is a request in the queue start it. */
+                                               start_next_request(ep);
+                                       } else
+                                               DWC_WARN
+                                               ("Incomplete transfer (%d - %s [siz=%d pkt=%d])\n",
+                                               ep->dwc_ep.num,
+                                               (ep->dwc_ep.is_in ? "IN" : "OUT"),
+                                               deptsiz.b.xfersize,
+                                               deptsiz.b.pktcnt);
+                               }
+                       } else {
+                               dma_desc = ep->dwc_ep.desc_addr;
+                               byte_count = 0;
+                               ep->dwc_ep.sent_zlp = 0;
+
+#ifdef DWC_UTE_CFI
+                               CFI_INFO("%s: BUFFER_MODE=%d\n", __func__,
+                                        ep->dwc_ep.buff_mode);
+                               if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+                                       int residue;
+
+                                       residue = cfi_calc_desc_residue(ep);
+                                       if (residue < 0)
+                                               return;
+
+                                       byte_count = residue;
+                               } else {
+#endif
+                                       for (i = 0; i < ep->dwc_ep.desc_cnt;
+                                            ++i) {
+                                       desc_sts = dma_desc->status;
+                                       byte_count += desc_sts.b.bytes;
+                                       dma_desc++;
+                               }
+#ifdef DWC_UTE_CFI
+                               }
+#endif
+                               if (byte_count == 0) {
+                                       ep->dwc_ep.xfer_count =
+                                           ep->dwc_ep.total_len;
+                                       is_last = 1;
+                               } else {
+                                       DWC_WARN("Incomplete transfer\n");
+                               }
+                       }
+               } else {
+                       if (deptsiz.b.xfersize == 0 && deptsiz.b.pktcnt == 0) {
+                               DWC_DEBUGPL(DBG_PCDV,
+                                           "%d-%s len=%d  xfersize=%d pktcnt=%d\n",
+                                           ep->dwc_ep.num,
+                                           ep->dwc_ep.is_in ? "IN" : "OUT",
+                                           ep->dwc_ep.xfer_len,
+                                           deptsiz.b.xfersize,
+                                           deptsiz.b.pktcnt);
+
+                               /*      Check if the whole transfer was completed, 
+                                *      if no, setup transfer for next portion of data
+                                */
+                               if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+                                       dwc_otg_ep_start_transfer(core_if,
+                                                                 &ep->dwc_ep);
+                               } else if (ep->dwc_ep.sent_zlp) {
+                                       /*     
+                                        * This fragment of code should initiate 0
+                                        * length trasfer in case if it is queued
+                                        * a trasfer with size divisible to EPs max
+                                        * packet size and with usb_request zero field
+                                        * is set, which means that after data is transfered,
+                                        * it is also should be transfered
+                                        * a 0 length packet at the end. For Slave and
+                                        * Buffer DMA modes in this case SW has
+                                        * to initiate 2 transfers one with transfer size,
+                                        * and the second with 0 size. For Desriptor
+                                        * DMA mode SW is able to initiate a transfer,
+                                        * which will handle all the packets including
+                                        * the last  0 legth.
+                                        */
+                                       ep->dwc_ep.sent_zlp = 0;
+                                       dwc_otg_ep_start_zl_transfer(core_if,
+                                                                    &ep->dwc_ep);
+                               } else {
+                                       is_last = 1;
+                               }
+                       } else {
+                               DWC_WARN
+                                   ("Incomplete transfer (%d-%s [siz=%d pkt=%d])\n",
+                                    ep->dwc_ep.num,
+                                    (ep->dwc_ep.is_in ? "IN" : "OUT"),
+                                    deptsiz.b.xfersize, deptsiz.b.pktcnt);
+                       }
+               }
+       } else {
+               dwc_otg_dev_out_ep_regs_t *out_ep_regs =
+                   dev_if->out_ep_regs[ep->dwc_ep.num];
+               desc_sts.d32 = 0;
+               if (core_if->dma_enable) {
+                       if (core_if->dma_desc_enable) {
+                               dma_desc = ep->dwc_ep.desc_addr;
+                               byte_count = 0;
+                               ep->dwc_ep.sent_zlp = 0;
+
+#ifdef DWC_UTE_CFI
+                               CFI_INFO("%s: BUFFER_MODE=%d\n", __func__,
+                                        ep->dwc_ep.buff_mode);
+                               if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+                                       int residue;
+                                       residue = cfi_calc_desc_residue(ep);
+                                       if (residue < 0)
+                                               return;
+                                       byte_count = residue;
+                               } else {
+#endif
+
+                                       for (i = 0; i < ep->dwc_ep.desc_cnt;
+                                            ++i) {
+                                               desc_sts = dma_desc->status;
+                                               byte_count += desc_sts.b.bytes;
+                                               dma_desc++;
+                                       }
+
+#ifdef DWC_UTE_CFI
+                               }
+#endif
+                               /* Checking for interrupt Out transfers with not 
+                                * dword aligned mps sizes 
+                                */
+                               if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_INTR &&
+                                                       (ep->dwc_ep.maxpacket%4)) {
+                                       ep->dwc_ep.xfer_count =
+                                           ep->dwc_ep.total_len - byte_count;
+                                       if ((ep->dwc_ep.xfer_len %
+                                            ep->dwc_ep.maxpacket)
+                                           && (ep->dwc_ep.xfer_len /
+                                               ep->dwc_ep.maxpacket <
+                                               MAX_DMA_DESC_CNT))
+                                               ep->dwc_ep.xfer_len -=
+                                                   (ep->dwc_ep.desc_cnt -
+                                                    1) * ep->dwc_ep.maxpacket +
+                                                   ep->dwc_ep.xfer_len %
+                                                   ep->dwc_ep.maxpacket;
+                                       else                                            
+                                               ep->dwc_ep.xfer_len -=
+                                                   ep->dwc_ep.desc_cnt *
+                                                   ep->dwc_ep.maxpacket;
+                                       if (ep->dwc_ep.xfer_len > 0) {
+                                               dwc_otg_ep_start_transfer
+                                                   (core_if, &ep->dwc_ep);
+                                       } else {
+                                               is_last = 1;
+                                       }
+                               } else {
+                                       ep->dwc_ep.xfer_count =
+                                           ep->dwc_ep.total_len - byte_count +
+                                           ((4 -
+                                             (ep->dwc_ep.
+                                              total_len & 0x3)) & 0x3);
+                                       is_last = 1;
+                               }       
+                       } else {
+                               deptsiz.d32 = 0;
+                               deptsiz.d32 =
+                                   DWC_READ_REG32(&out_ep_regs->doeptsiz);
+
+                               byte_count = (ep->dwc_ep.xfer_len -
+                                             ep->dwc_ep.xfer_count -
+                                             deptsiz.b.xfersize);
+                               ep->dwc_ep.xfer_buff += byte_count;
+                               ep->dwc_ep.dma_addr += byte_count;
+                               ep->dwc_ep.xfer_count += byte_count;
+
+                               /*      Check if the whole transfer was completed, 
+                                *      if no, setup transfer for next portion of data
+                                */
+                               if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+                                       dwc_otg_ep_start_transfer(core_if,
+                                                                 &ep->dwc_ep);
+                               } else if (ep->dwc_ep.sent_zlp) {
+                                       /*     
+                                        * This fragment of code should initiate 0
+                                        * length trasfer in case if it is queued
+                                        * a trasfer with size divisible to EPs max
+                                        * packet size and with usb_request zero field
+                                        * is set, which means that after data is transfered,
+                                        * it is also should be transfered
+                                        * a 0 length packet at the end. For Slave and
+                                        * Buffer DMA modes in this case SW has
+                                        * to initiate 2 transfers one with transfer size,
+                                        * and the second with 0 size. For Desriptor
+                                        * DMA mode SW is able to initiate a transfer,
+                                        * which will handle all the packets including
+                                        * the last  0 legth.
+                                        */
+                                       ep->dwc_ep.sent_zlp = 0;
+                                       dwc_otg_ep_start_zl_transfer(core_if,
+                                                                    &ep->dwc_ep);
+                               } else {
+                                       is_last = 1;
+                               }
+                       }
+               } else {
+                       /*      Check if the whole transfer was completed, 
+                        *      if no, setup transfer for next portion of data
+                        */
+                       if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+                               dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+                       } else if (ep->dwc_ep.sent_zlp) {
+                               /*     
+                                * This fragment of code should initiate 0
+                                * length transfer in case if it is queued
+                                * a transfer with size divisible to EPs max
+                                * packet size and with usb_request zero field
+                                * is set, which means that after data is transfered,
+                                * it is also should be transfered
+                                * a 0 length packet at the end. For Slave and
+                                * Buffer DMA modes in this case SW has
+                                * to initiate 2 transfers one with transfer size,
+                                * and the second with 0 size. For Descriptor
+                                * DMA mode SW is able to initiate a transfer,
+                                * which will handle all the packets including
+                                * the last  0 length.
+                                */
+                               ep->dwc_ep.sent_zlp = 0;
+                               dwc_otg_ep_start_zl_transfer(core_if,
+                                                            &ep->dwc_ep);
+                       } else {
+                               is_last = 1;
+                       }
+               }
+
+               DWC_DEBUGPL(DBG_PCDV,
+                           "addr %p,    %d-%s len=%d cnt=%d xsize=%d pktcnt=%d\n",
+                           &out_ep_regs->doeptsiz, ep->dwc_ep.num,
+                           ep->dwc_ep.is_in ? "IN" : "OUT",
+                           ep->dwc_ep.xfer_len, ep->dwc_ep.xfer_count,
+                           deptsiz.b.xfersize, deptsiz.b.pktcnt);
+       }
+
+       /* Complete the request */
+       if (is_last) {
+#ifdef DWC_UTE_CFI
+               if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+                       req->actual = ep->dwc_ep.cfi_req_len - byte_count;
+               } else {
+#endif
+                       req->actual = ep->dwc_ep.xfer_count;
+#ifdef DWC_UTE_CFI
+               }
+#endif
+               if (req->dw_align_buf) {
+                       if (!ep->dwc_ep.is_in) {
+                               dwc_memcpy(req->buf, req->dw_align_buf, req->length); 
+                       }
+                       DWC_DMA_FREE(req->length, req->dw_align_buf,
+                                    req->dw_align_buf_dma);
+               }
+
+               dwc_otg_request_done(ep, req, 0);
+
+               ep->dwc_ep.start_xfer_buff = 0;
+               ep->dwc_ep.xfer_buff = 0;
+               ep->dwc_ep.xfer_len = 0;
+
+               /* If there is a request in the queue start it. */
+               start_next_request(ep);
+       }
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function BNA interrupt for Isochronous EPs
+ *
+ */
+static void dwc_otg_pcd_handle_iso_bna(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_ep_t *dwc_ep = &ep->dwc_ep;
+       volatile uint32_t *addr;
+       depctl_data_t depctl = {.d32 = 0 };
+       dwc_otg_pcd_t *pcd = ep->pcd;
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       int i;
+
+       dma_desc =
+           dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * (dwc_ep->proc_buf_num);
+
+       if (dwc_ep->is_in) {
+               dev_dma_desc_sts_t sts = {.d32 = 0 };
+               for (i = 0; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
+                       sts.d32 = dma_desc->status.d32;
+                       sts.b_iso_in.bs = BS_HOST_READY;
+                       dma_desc->status.d32 = sts.d32;
+               }
+       } else {
+               dev_dma_desc_sts_t sts = {.d32 = 0 };
+               for (i = 0; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
+                       sts.d32 = dma_desc->status.d32;
+                       sts.b_iso_out.bs = BS_HOST_READY;
+                       dma_desc->status.d32 = sts.d32;
+               }
+       }
+
+       if (dwc_ep->is_in == 0) {
+               addr =
+                   &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->
+                                                          num]->doepctl;
+       } else {
+               addr =
+                   &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+       }
+       depctl.b.epena = 1;
+       DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
+}
+
+/**
+ * This function sets latest iso packet information(non-PTI mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void set_current_pkt_info(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       deptsiz_data_t deptsiz = {.d32 = 0 };
+       dma_addr_t dma_addr;
+       uint32_t offset;
+
+       if (ep->proc_buf_num)
+               dma_addr = ep->dma_addr1;
+       else
+               dma_addr = ep->dma_addr0;
+
+       if (ep->is_in) {
+               deptsiz.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->
+                                  in_ep_regs[ep->num]->dieptsiz);
+               offset = ep->data_per_frame;
+       } else {
+               deptsiz.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->
+                                  out_ep_regs[ep->num]->doeptsiz);
+               offset =
+                   ep->data_per_frame +
+                   (0x4 & (0x4 - (ep->data_per_frame & 0x3)));
+       }
+
+       if (!deptsiz.b.xfersize) {
+               ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
+               ep->pkt_info[ep->cur_pkt].offset =
+                   ep->cur_pkt_dma_addr - dma_addr;
+               ep->pkt_info[ep->cur_pkt].status = 0;
+       } else {
+               ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
+               ep->pkt_info[ep->cur_pkt].offset =
+                   ep->cur_pkt_dma_addr - dma_addr;
+               ep->pkt_info[ep->cur_pkt].status = -DWC_E_NO_DATA;
+       }
+       ep->cur_pkt_addr += offset;
+       ep->cur_pkt_dma_addr += offset;
+       ep->cur_pkt++;
+}
+
+/**
+ * This function sets latest iso packet information(DDMA mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+static void set_ddma_iso_pkts_info(dwc_otg_core_if_t * core_if,
+                                  dwc_ep_t * dwc_ep)
+{
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       dev_dma_desc_sts_t sts = {.d32 = 0 };
+       iso_pkt_info_t *iso_packet;
+       uint32_t data_per_desc;
+       uint32_t offset;
+       int i, j;
+
+       iso_packet = dwc_ep->pkt_info;
+
+       /** Reinit closed DMA Descriptors*/
+       /** ISO OUT EP */
+       if (dwc_ep->is_in == 0) {
+               dma_desc =
+                   dwc_ep->iso_desc_addr +
+                   dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+               offset = 0;
+
+               for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+                    i += dwc_ep->pkt_per_frm) {
+                       for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+                               data_per_desc =
+                                   ((j + 1) * dwc_ep->maxpacket >
+                                    dwc_ep->
+                                    data_per_frame) ? dwc_ep->data_per_frame -
+                                   j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+                               data_per_desc +=
+                                   (data_per_desc % 4) ? (4 -
+                                                          data_per_desc %
+                                                          4) : 0;
+
+                               sts.d32 = dma_desc->status.d32;
+
+                               /* Write status in iso_packet_decsriptor  */
+                               iso_packet->status =
+                                   sts.b_iso_out.rxsts +
+                                   (sts.b_iso_out.bs ^ BS_DMA_DONE);
+                               if (iso_packet->status) {
+                                       iso_packet->status = -DWC_E_NO_DATA;
+                               }
+
+                               /* Received data length */
+                               if (!sts.b_iso_out.rxbytes) {
+                                       iso_packet->length =
+                                           data_per_desc -
+                                           sts.b_iso_out.rxbytes;
+                               } else {
+                                       iso_packet->length =
+                                           data_per_desc -
+                                           sts.b_iso_out.rxbytes + (4 -
+                                                                    dwc_ep->data_per_frame
+                                                                    % 4);
+                               }
+
+                               iso_packet->offset = offset;
+
+                               offset += data_per_desc;
+                               dma_desc++;
+                               iso_packet++;
+                       }
+               }
+
+               for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+                       data_per_desc =
+                           ((j + 1) * dwc_ep->maxpacket >
+                            dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+                           j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+                       data_per_desc +=
+                           (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+
+                       sts.d32 = dma_desc->status.d32;
+
+                       /* Write status in iso_packet_decsriptor  */
+                       iso_packet->status =
+                           sts.b_iso_out.rxsts +
+                           (sts.b_iso_out.bs ^ BS_DMA_DONE);
+                       if (iso_packet->status) {
+                               iso_packet->status = -DWC_E_NO_DATA;
+                       }
+
+                       /* Received data length */
+                       iso_packet->length =
+                           dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
+
+                       iso_packet->offset = offset;
+
+                       offset += data_per_desc;
+                       iso_packet++;
+                       dma_desc++;
+               }
+
+               sts.d32 = dma_desc->status.d32;
+
+               /* Write status in iso_packet_decsriptor  */
+               iso_packet->status =
+                   sts.b_iso_out.rxsts + (sts.b_iso_out.bs ^ BS_DMA_DONE);
+               if (iso_packet->status) {
+                       iso_packet->status = -DWC_E_NO_DATA;
+               }
+               /* Received data length */
+               if (!sts.b_iso_out.rxbytes) {
+                       iso_packet->length =
+                           dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
+               } else {
+                       iso_packet->length =
+                           dwc_ep->data_per_frame - sts.b_iso_out.rxbytes +
+                           (4 - dwc_ep->data_per_frame % 4);
+               }
+
+               iso_packet->offset = offset;
+       } else {
+/** ISO IN EP */
+
+               dma_desc =
+                   dwc_ep->iso_desc_addr +
+                   dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+               for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
+                       sts.d32 = dma_desc->status.d32;
+
+                       /* Write status in iso packet descriptor */
+                       iso_packet->status =
+                           sts.b_iso_in.txsts +
+                           (sts.b_iso_in.bs ^ BS_DMA_DONE);
+                       if (iso_packet->status != 0) {
+                               iso_packet->status = -DWC_E_NO_DATA;
+
+                       }
+                       /* Bytes has been transfered */
+                       iso_packet->length =
+                           dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
+
+                       dma_desc++;
+                       iso_packet++;
+               }
+
+               sts.d32 = dma_desc->status.d32;
+               while (sts.b_iso_in.bs == BS_DMA_BUSY) {
+                       sts.d32 = dma_desc->status.d32;
+               }
+
+               /* Write status in iso packet descriptor ??? do be done with ERROR codes */
+               iso_packet->status =
+                   sts.b_iso_in.txsts + (sts.b_iso_in.bs ^ BS_DMA_DONE);
+               if (iso_packet->status != 0) {
+                       iso_packet->status = -DWC_E_NO_DATA;
+               }
+
+               /* Bytes has been transfered */
+               iso_packet->length =
+                   dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
+       }
+}
+
+/**
+ * This function reinitialize DMA Descriptors for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+static void reinit_ddma_iso_xfer(dwc_otg_core_if_t * core_if, dwc_ep_t * dwc_ep)
+{
+       int i, j;
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       dma_addr_t dma_ad;
+       volatile uint32_t *addr;
+       dev_dma_desc_sts_t sts = {.d32 = 0 };
+       uint32_t data_per_desc;
+
+       if (dwc_ep->is_in == 0) {
+               addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+       } else {
+               addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+       }
+
+       if (dwc_ep->proc_buf_num == 0) {
+               /** Buffer 0 descriptors setup */
+               dma_ad = dwc_ep->dma_addr0;
+       } else {
+               /** Buffer 1 descriptors setup */
+               dma_ad = dwc_ep->dma_addr1;
+       }
+
+       /** Reinit closed DMA Descriptors*/
+       /** ISO OUT EP */
+       if (dwc_ep->is_in == 0) {
+               dma_desc =
+                   dwc_ep->iso_desc_addr +
+                   dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+               sts.b_iso_out.bs = BS_HOST_READY;
+               sts.b_iso_out.rxsts = 0;
+               sts.b_iso_out.l = 0;
+               sts.b_iso_out.sp = 0;
+               sts.b_iso_out.ioc = 0;
+               sts.b_iso_out.pid = 0;
+               sts.b_iso_out.framenum = 0;
+
+               for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+                    i += dwc_ep->pkt_per_frm) {
+                       for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+                               data_per_desc =
+                                   ((j + 1) * dwc_ep->maxpacket >
+                                    dwc_ep->
+                                    data_per_frame) ? dwc_ep->data_per_frame -
+                                   j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+                               data_per_desc +=
+                                   (data_per_desc % 4) ? (4 -
+                                                          data_per_desc %
+                                                          4) : 0;
+                               sts.b_iso_out.rxbytes = data_per_desc;
+                               dma_desc->buf = dma_ad;
+                               dma_desc->status.d32 = sts.d32;
+
+                               dma_ad += data_per_desc;
+                               dma_desc++;
+                       }
+               }
+
+               for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+
+                       data_per_desc =
+                           ((j + 1) * dwc_ep->maxpacket >
+                            dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+                           j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+                       data_per_desc +=
+                           (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+                       sts.b_iso_out.rxbytes = data_per_desc;
+
+                       dma_desc->buf = dma_ad;
+                       dma_desc->status.d32 = sts.d32;
+
+                       dma_desc++;
+                       dma_ad += data_per_desc;
+               }
+
+               sts.b_iso_out.ioc = 1;
+               sts.b_iso_out.l = dwc_ep->proc_buf_num;
+
+               data_per_desc =
+                   ((j + 1) * dwc_ep->maxpacket >
+                    dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+                   j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+               data_per_desc +=
+                   (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+               sts.b_iso_out.rxbytes = data_per_desc;
+
+               dma_desc->buf = dma_ad;
+               dma_desc->status.d32 = sts.d32;
+       } else {
+/** ISO IN EP */
+
+               dma_desc =
+                   dwc_ep->iso_desc_addr +
+                   dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+               sts.b_iso_in.bs = BS_HOST_READY;
+               sts.b_iso_in.txsts = 0;
+               sts.b_iso_in.sp = 0;
+               sts.b_iso_in.ioc = 0;
+               sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
+               sts.b_iso_in.framenum = dwc_ep->next_frame;
+               sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
+               sts.b_iso_in.l = 0;
+
+               for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
+                       dma_desc->buf = dma_ad;
+                       dma_desc->status.d32 = sts.d32;
+
+                       sts.b_iso_in.framenum += dwc_ep->bInterval;
+                       dma_ad += dwc_ep->data_per_frame;
+                       dma_desc++;
+               }
+
+               sts.b_iso_in.ioc = 1;
+               sts.b_iso_in.l = dwc_ep->proc_buf_num;
+
+               dma_desc->buf = dma_ad;
+               dma_desc->status.d32 = sts.d32;
+
+               dwc_ep->next_frame =
+                   sts.b_iso_in.framenum + dwc_ep->bInterval * 1;
+       }
+       dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+}
+
+/**
+ * This function is to handle Iso EP transfer complete interrupt
+ * in case Iso out packet was dropped
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP for wihich transfer complete was asserted
+ *
+ */
+static uint32_t handle_iso_out_pkt_dropped(dwc_otg_core_if_t * core_if,
+                                          dwc_ep_t * dwc_ep)
+{
+       uint32_t dma_addr;
+       uint32_t drp_pkt;
+       uint32_t drp_pkt_cnt;
+       deptsiz_data_t deptsiz = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       int i;
+
+       deptsiz.d32 =
+           DWC_READ_REG32(&core_if->dev_if->
+                          out_ep_regs[dwc_ep->num]->doeptsiz);
+
+       drp_pkt = dwc_ep->pkt_cnt - deptsiz.b.pktcnt;
+       drp_pkt_cnt = dwc_ep->pkt_per_frm - (drp_pkt % dwc_ep->pkt_per_frm);
+
+       /* Setting dropped packets status */
+       for (i = 0; i < drp_pkt_cnt; ++i) {
+               dwc_ep->pkt_info[drp_pkt].status = -DWC_E_NO_DATA;
+               drp_pkt++;
+               deptsiz.b.pktcnt--;
+       }
+
+       if (deptsiz.b.pktcnt > 0) {
+               deptsiz.b.xfersize =
+                   dwc_ep->xfer_len - (dwc_ep->pkt_cnt -
+                                       deptsiz.b.pktcnt) * dwc_ep->maxpacket;
+       } else {
+               deptsiz.b.xfersize = 0;
+               deptsiz.b.pktcnt = 0;
+       }
+
+       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz,
+                       deptsiz.d32);
+
+       if (deptsiz.b.pktcnt > 0) {
+               if (dwc_ep->proc_buf_num) {
+                       dma_addr =
+                           dwc_ep->dma_addr1 + dwc_ep->xfer_len -
+                           deptsiz.b.xfersize;
+               } else {
+                       dma_addr =
+                           dwc_ep->dma_addr0 + dwc_ep->xfer_len -
+                           deptsiz.b.xfersize;;
+               }
+
+               DWC_WRITE_REG32(&core_if->dev_if->
+                               out_ep_regs[dwc_ep->num]->doepdma, dma_addr);
+
+               /** Re-enable endpoint, clear nak  */
+               depctl.d32 = 0;
+               depctl.b.epena = 1;
+               depctl.b.cnak = 1;
+
+               DWC_MODIFY_REG32(&core_if->dev_if->
+                                out_ep_regs[dwc_ep->num]->doepctl, depctl.d32,
+                                depctl.d32);
+               return 0;
+       } else {
+               return 1;
+       }
+}
+
+/**
+ * This function sets iso packets information(PTI mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+static uint32_t set_iso_pkts_info(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+       int i, j;
+       dma_addr_t dma_ad;
+       iso_pkt_info_t *packet_info = ep->pkt_info;
+       uint32_t offset;
+       uint32_t frame_data;
+       deptsiz_data_t deptsiz;
+
+       if (ep->proc_buf_num == 0) {
+               /** Buffer 0 descriptors setup */
+               dma_ad = ep->dma_addr0;
+       } else {
+               /** Buffer 1 descriptors setup */
+               dma_ad = ep->dma_addr1;
+       }
+
+       if (ep->is_in) {
+               deptsiz.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+                                  dieptsiz);
+       } else {
+               deptsiz.d32 =
+                   DWC_READ_REG32(&core_if->dev_if->out_ep_regs[ep->num]->
+                                  doeptsiz);
+       }
+
+       if (!deptsiz.b.xfersize) {
+               offset = 0;
+               for (i = 0; i < ep->pkt_cnt; i += ep->pkt_per_frm) {
+                       frame_data = ep->data_per_frame;
+                       for (j = 0; j < ep->pkt_per_frm; ++j) {
+
+                               /* Packet status - is not set as initially
+                                * it is set to 0 and if packet was sent
+                                successfully, status field will remain 0*/
+
+                               /* Bytes has been transfered */
+                               packet_info->length =
+                                   (ep->maxpacket <
+                                    frame_data) ? ep->maxpacket : frame_data;
+
+                               /* Received packet offset */
+                               packet_info->offset = offset;
+                               offset += packet_info->length;
+                               frame_data -= packet_info->length;
+
+                               packet_info++;
+                       }
+               }
+               return 1;
+       } else {
+               /* This is a workaround for in case of Transfer Complete with
+                * PktDrpSts interrupts merging - in this case Transfer complete
+                * interrupt for Isoc Out Endpoint is asserted without PktDrpSts
+                * set and with DOEPTSIZ register non zero. Investigations showed,
+                * that this happens when Out packet is dropped, but because of
+                * interrupts merging during first interrupt handling PktDrpSts
+                * bit is cleared and for next merged interrupts it is not reset.
+                * In this case SW hadles the interrupt as if PktDrpSts bit is set.
+                */
+               if (ep->is_in) {
+                       return 1;
+               } else {
+                       return handle_iso_out_pkt_dropped(core_if, ep);
+               }
+       }
+}
+
+/**
+ * This function is to handle Iso EP transfer complete interrupt
+ *
+ * @param pcd The PCD
+ * @param ep The EP for which transfer complete was asserted
+ *
+ */
+static void complete_iso_ep(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+       dwc_ep_t *dwc_ep = &ep->dwc_ep;
+       uint8_t is_last = 0;
+
+       if (ep->dwc_ep.next_frame == 0xffffffff) {
+               DWC_WARN("Next frame is not set!\n");
+               return;
+       }
+
+       if (core_if->dma_enable) {
+               if (core_if->dma_desc_enable) {
+                       set_ddma_iso_pkts_info(core_if, dwc_ep);
+                       reinit_ddma_iso_xfer(core_if, dwc_ep);
+                       is_last = 1;
+               } else {
+                       if (core_if->pti_enh_enable) {
+                               if (set_iso_pkts_info(core_if, dwc_ep)) {
+                                       dwc_ep->proc_buf_num =
+                                           (dwc_ep->proc_buf_num ^ 1) & 0x1;
+                                       dwc_otg_iso_ep_start_buf_transfer
+                                           (core_if, dwc_ep);
+                                       is_last = 1;
+                               }
+                       } else {
+                               set_current_pkt_info(core_if, dwc_ep);
+                               if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+                                       is_last = 1;
+                                       dwc_ep->cur_pkt = 0;
+                                       dwc_ep->proc_buf_num =
+                                           (dwc_ep->proc_buf_num ^ 1) & 0x1;
+                                       if (dwc_ep->proc_buf_num) {
+                                               dwc_ep->cur_pkt_addr =
+                                                   dwc_ep->xfer_buff1;
+                                               dwc_ep->cur_pkt_dma_addr =
+                                                   dwc_ep->dma_addr1;
+                                       } else {
+                                               dwc_ep->cur_pkt_addr =
+                                                   dwc_ep->xfer_buff0;
+                                               dwc_ep->cur_pkt_dma_addr =
+                                                   dwc_ep->dma_addr0;
+                                       }
+
+                               }
+                               dwc_otg_iso_ep_start_frm_transfer(core_if,
+                                                                 dwc_ep);
+                       }
+               }
+       } else {
+               set_current_pkt_info(core_if, dwc_ep);
+               if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+                       is_last = 1;
+                       dwc_ep->cur_pkt = 0;
+                       dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+                       if (dwc_ep->proc_buf_num) {
+                               dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
+                               dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
+                       } else {
+                               dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
+                               dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
+                       }
+
+               }
+               dwc_otg_iso_ep_start_frm_transfer(core_if, dwc_ep);
+       }
+       if (is_last)
+               dwc_otg_iso_buffer_done(pcd, ep, ep->iso_req_handle);
+}
+#endif /* DWC_EN_ISOC */
+
+/**
+ * This function handle BNA interrupt for Non Isochronous EPs
+ *
+ */
+static void dwc_otg_pcd_handle_noniso_bna(dwc_otg_pcd_ep_t * ep)
+{
+       dwc_ep_t *dwc_ep = &ep->dwc_ep;
+       volatile uint32_t *addr;
+       depctl_data_t depctl = {.d32 = 0 };
+       dwc_otg_pcd_t *pcd = ep->pcd;
+       dwc_otg_dev_dma_desc_t *dma_desc;
+       dev_dma_desc_sts_t sts = {.d32 = 0 };
+       dwc_otg_core_if_t *core_if = ep->pcd->core_if;
+       int i, start;
+
+       if (!dwc_ep->desc_cnt)
+               DWC_WARN("Ep%d %s Descriptor count = %d \n", dwc_ep->num,
+                        (dwc_ep->is_in ? "IN" : "OUT"), dwc_ep->desc_cnt);
+
+       if (core_if->core_params->cont_on_bna && !dwc_ep->is_in
+                                                       && dwc_ep->type != DWC_OTG_EP_TYPE_CONTROL) {
+               uint32_t doepdma;
+               dwc_otg_dev_out_ep_regs_t *out_regs =
+                       core_if->dev_if->out_ep_regs[dwc_ep->num];
+               doepdma = DWC_READ_REG32(&(out_regs->doepdma));
+               start = (doepdma - dwc_ep->dma_desc_addr)/sizeof(dwc_otg_dev_dma_desc_t);
+               dma_desc = &(dwc_ep->desc_addr[start]);
+       } else {
+               start = 0;
+               dma_desc = dwc_ep->desc_addr;
+       }
+       
+
+       for (i = start; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
+               sts.d32 = dma_desc->status.d32;
+               sts.b.bs = BS_HOST_READY;
+               dma_desc->status.d32 = sts.d32;
+       }
+
+       if (dwc_ep->is_in == 0) {
+               addr =
+                   &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->num]->
+                   doepctl;
+       } else {
+               addr =
+                   &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+       }
+       depctl.b.epena = 1;
+       depctl.b.cnak = 1;
+       DWC_MODIFY_REG32(addr, 0, depctl.d32);
+}
+
+/**
+ * This function handles EP0 Control transfers.
+ *
+ * The state of the control transfers are tracked in
+ * <code>ep0state</code>.
+ */
+static void handle_ep0(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+       dev_dma_desc_sts_t desc_sts;
+       deptsiz0_data_t deptsiz;
+       uint32_t byte_count;
+
+#ifdef DEBUG_EP0
+       DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
+       print_ep0_state(pcd);
+#endif
+
+//      DWC_PRINTF("HANDLE EP0\n");
+
+       switch (pcd->ep0state) {
+       case EP0_DISCONNECT:
+               break;
+
+       case EP0_IDLE:
+               pcd->request_config = 0;
+
+               pcd_setup(pcd);
+               break;
+
+       case EP0_IN_DATA_PHASE:
+#ifdef DEBUG_EP0
+               DWC_DEBUGPL(DBG_PCD, "DATA_IN EP%d-%s: type=%d, mps=%d\n",
+                           ep0->dwc_ep.num, (ep0->dwc_ep.is_in ? "IN" : "OUT"),
+                           ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
+#endif
+
+               if (core_if->dma_enable != 0) {
+                       /*
+                        * For EP0 we can only program 1 packet at a time so we
+                        * need to do the make calculations after each complete.
+                        * Call write_packet to make the calculations, as in
+                        * slave mode, and use those values to determine if we
+                        * can complete.
+                        */
+                       if (core_if->dma_desc_enable == 0) {
+                               deptsiz.d32 =
+                                   DWC_READ_REG32(&core_if->
+                                                  dev_if->in_ep_regs[0]->
+                                                  dieptsiz);
+                               byte_count =
+                                   ep0->dwc_ep.xfer_len - deptsiz.b.xfersize;
+                       } else {
+                               desc_sts =
+                                   core_if->dev_if->in_desc_addr->status;
+                               byte_count =
+                                   ep0->dwc_ep.xfer_len - desc_sts.b.bytes;
+                       }
+                       ep0->dwc_ep.xfer_count += byte_count;
+                       ep0->dwc_ep.xfer_buff += byte_count;
+                       ep0->dwc_ep.dma_addr += byte_count;
+               }
+               if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
+                       dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+                                                     &ep0->dwc_ep);
+                       DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+               } else if (ep0->dwc_ep.sent_zlp) {
+                       dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+                                                     &ep0->dwc_ep);
+                       ep0->dwc_ep.sent_zlp = 0;
+                       DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER sent zlp\n");
+               } else {
+                       ep0_complete_request(ep0);
+                       DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
+               }
+               break;
+       case EP0_OUT_DATA_PHASE:
+#ifdef DEBUG_EP0
+               DWC_DEBUGPL(DBG_PCD, "DATA_OUT EP%d-%s: type=%d, mps=%d\n",
+                           ep0->dwc_ep.num, (ep0->dwc_ep.is_in ? "IN" : "OUT"),
+                           ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
+#endif
+               if (core_if->dma_enable != 0) {
+                       if (core_if->dma_desc_enable == 0) {
+                               deptsiz.d32 =
+                                   DWC_READ_REG32(&core_if->
+                                                  dev_if->out_ep_regs[0]->
+                                                  doeptsiz);
+                               byte_count =
+                                   ep0->dwc_ep.maxpacket - deptsiz.b.xfersize;
+                       } else {
+                               desc_sts =
+                                   core_if->dev_if->out_desc_addr->status;
+                               byte_count =
+                                   ep0->dwc_ep.maxpacket - desc_sts.b.bytes;
+                       }
+                       ep0->dwc_ep.xfer_count += byte_count;
+                       ep0->dwc_ep.xfer_buff += byte_count;
+                       ep0->dwc_ep.dma_addr += byte_count;
+               }
+               if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
+                       dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+                                                     &ep0->dwc_ep);
+                       DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+               } else if (ep0->dwc_ep.sent_zlp) {
+                       dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+                                                     &ep0->dwc_ep);
+                       ep0->dwc_ep.sent_zlp = 0;
+                       DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER sent zlp\n");
+               } else {
+                       ep0_complete_request(ep0);
+                       DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
+               }
+               break;
+
+       case EP0_IN_STATUS_PHASE:
+       case EP0_OUT_STATUS_PHASE:
+               DWC_DEBUGPL(DBG_PCD, "CASE: EP0_STATUS\n");
+               ep0_complete_request(ep0);
+               pcd->ep0state = EP0_IDLE;
+               ep0->stopped = 1;
+               ep0->dwc_ep.is_in = 0;  /* OUT for next SETUP */
+
+               /* Prepare for more SETUP Packets */
+               if (core_if->dma_enable) {
+                       ep0_out_start(core_if, pcd);
+               }
+               break;
+
+       case EP0_STALL:
+               DWC_ERROR("EP0 STALLed, should not get here pcd_setup()\n");
+               break;
+       }
+#ifdef DEBUG_EP0
+       print_ep0_state(pcd);
+#endif
+}
+
+/**
+ * Restart transfer
+ */
+static void restart_transfer(dwc_otg_pcd_t * pcd, const uint32_t epnum)
+{
+       dwc_otg_core_if_t *core_if;
+       dwc_otg_dev_if_t *dev_if;
+       deptsiz_data_t dieptsiz = {.d32 = 0 };
+       dwc_otg_pcd_ep_t *ep;
+
+       ep = get_in_ep(pcd, epnum);
+
+#ifdef DWC_EN_ISOC
+       if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+               return;
+       }
+#endif /* DWC_EN_ISOC  */
+
+       core_if = GET_CORE_IF(pcd);
+       dev_if = core_if->dev_if;
+
+       dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dieptsiz);
+
+       DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x xfer_len=%0x"
+                   " stopped=%d\n", ep->dwc_ep.xfer_buff,
+                   ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len, ep->stopped);
+       /*
+        * If xfersize is 0 and pktcnt in not 0, resend the last packet.
+        */
+       if (dieptsiz.b.pktcnt && dieptsiz.b.xfersize == 0 &&
+           ep->dwc_ep.start_xfer_buff != 0) {
+               if (ep->dwc_ep.total_len <= ep->dwc_ep.maxpacket) {
+                       ep->dwc_ep.xfer_count = 0;
+                       ep->dwc_ep.xfer_buff = ep->dwc_ep.start_xfer_buff;
+                       ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
+               } else {
+                       ep->dwc_ep.xfer_count -= ep->dwc_ep.maxpacket;
+                       /* convert packet size to dwords. */
+                       ep->dwc_ep.xfer_buff -= ep->dwc_ep.maxpacket;
+                       ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
+               }
+               ep->stopped = 0;
+               DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x "
+                           "xfer_len=%0x stopped=%d\n",
+                           ep->dwc_ep.xfer_buff,
+                           ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len,
+                           ep->stopped);
+               if (epnum == 0) {
+                       dwc_otg_ep0_start_transfer(core_if, &ep->dwc_ep);
+               } else {
+                       dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+               }
+       }
+}
+
+/*
+ * This function create new nextep sequnce based on Learn Queue.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void predict_nextep_seq( dwc_otg_core_if_t * core_if)
+{
+       dwc_otg_device_global_regs_t *dev_global_regs =
+           core_if->dev_if->dev_global_regs;
+       const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
+       /* Number of Token Queue Registers */
+       const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
+       dtknq1_data_t dtknqr1;
+       uint32_t in_tkn_epnums[4];
+       uint8_t seqnum[MAX_EPS_CHANNELS];
+       uint8_t intkn_seq[TOKEN_Q_DEPTH];
+       grstctl_t resetctl = {.d32 = 0 };
+       uint8_t temp;
+       int ndx = 0;
+       int start = 0;
+       int end = 0;
+       int sort_done = 0;
+       int i = 0;
+       volatile uint32_t *addr = &dev_global_regs->dtknqr1;
+
+
+       DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
+
+       /* Read the DTKNQ Registers */
+       for (i = 0; i < DTKNQ_REG_CNT; i++) {
+               in_tkn_epnums[i] = DWC_READ_REG32(addr);
+               DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1,
+                           in_tkn_epnums[i]);
+               if (addr == &dev_global_regs->dvbusdis) {
+                       addr = &dev_global_regs->dtknqr3_dthrctl;
+               } else {
+                       ++addr;
+               }
+
+       }
+
+       /* Copy the DTKNQR1 data to the bit field. */
+       dtknqr1.d32 = in_tkn_epnums[0];
+       if (dtknqr1.b.wrap_bit) {
+               ndx = dtknqr1.b.intknwptr;
+               end = ndx -1;
+               if (end < 0) 
+                       end = TOKEN_Q_DEPTH -1;
+       } else {
+               ndx = 0;
+               end = dtknqr1.b.intknwptr -1;
+               if (end < 0) 
+                       end = 0;
+       }
+       start = ndx;
+       
+       /* Fill seqnum[] by initial values: EP number + 31 */
+       for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+               seqnum[i] = i +31;
+       }
+       
+       /* Fill intkn_seq[] from in_tkn_epnums[0] */
+       for (i=0; i < 6; i++) 
+               intkn_seq[i] = (in_tkn_epnums[0] >> ((7-i) * 4)) & 0xf;
+       
+       if (TOKEN_Q_DEPTH > 6) {
+               /* Fill intkn_seq[] from in_tkn_epnums[1] */
+               for (i=6; i < 14; i++) 
+                       intkn_seq[i] =
+                           (in_tkn_epnums[1] >> ((7 - (i - 6)) * 4)) & 0xf;
+       }
+       
+       if (TOKEN_Q_DEPTH > 14) {
+               /* Fill intkn_seq[] from in_tkn_epnums[1] */
+               for (i=14; i < 22; i++) 
+                       intkn_seq[i] =
+                           (in_tkn_epnums[2] >> ((7 - (i - 14)) * 4)) & 0xf;
+       }
+
+       if (TOKEN_Q_DEPTH > 22) {
+               /* Fill intkn_seq[] from in_tkn_epnums[1] */
+               for (i=22; i < 30; i++) 
+                       intkn_seq[i] =
+                           (in_tkn_epnums[3] >> ((7 - (i - 22)) * 4)) & 0xf;
+       }
+
+       DWC_DEBUGPL(DBG_PCDV, "%s start=%d end=%d intkn_seq[]:\n", __func__,
+                   start, end);
+       for (i=0; i<TOKEN_Q_DEPTH; i++) 
+               DWC_DEBUGPL(DBG_PCDV,"%d\n", intkn_seq[i]);
+
+       /* Update seqnum based on intkn_seq[] */
+       i = 0;
+       do {
+               seqnum[intkn_seq[ndx]] = i;
+               ndx++;
+               i++;
+               if (ndx == TOKEN_Q_DEPTH) 
+                       ndx = 0;
+       } while ( i < TOKEN_Q_DEPTH );
+       
+       /* Mark non active EP's in seqnum[] by 0xff */
+       for (i=0; i<=core_if->dev_if->num_in_eps; i++) {
+               if (core_if->nextep_seq[i] == 0xff )
+                       seqnum[i] = 0xff;
+       }
+       
+       /* Sort seqnum[] */
+       sort_done = 0;
+       while (!sort_done) {
+               sort_done = 1;
+               for (i=0; i<core_if->dev_if->num_in_eps; i++) {
+                       if (seqnum[i] > seqnum[i+1]) {
+                               temp = seqnum[i];
+                               seqnum[i] = seqnum[i+1];
+                               seqnum[i+1] = temp;
+                               sort_done = 0;
+                       }
+               }
+       }
+
+       ndx = start + seqnum[0];
+       if (ndx >= TOKEN_Q_DEPTH) 
+               ndx = ndx % TOKEN_Q_DEPTH;
+       core_if->first_in_nextep_seq = intkn_seq[ndx];
+       
+       /* Update seqnum[] by EP numbers  */
+       for (i=0; i<=core_if->dev_if->num_in_eps; i++) {
+               ndx = start + i;
+               if (seqnum[i] < 31) {
+                       ndx = start + seqnum[i];
+                       if (ndx >= TOKEN_Q_DEPTH) 
+                               ndx = ndx % TOKEN_Q_DEPTH;
+                       seqnum[i] = intkn_seq[ndx];
+               } else {
+                       if (seqnum[i] < 0xff) {
+                               seqnum[i] = seqnum[i] - 31;
+                       } else {
+                               break;
+                       }
+               }
+       }
+
+       /* Update nextep_seq[] based on seqnum[] */
+       for (i=0; i<core_if->dev_if->num_in_eps; i++) {
+               if (seqnum[i] != 0xff) {
+                       if (seqnum[i+1] != 0xff) {
+                               core_if->nextep_seq[seqnum[i]] = seqnum[i+1];
+                       } else {
+                               core_if->nextep_seq[seqnum[i]] = core_if->first_in_nextep_seq;
+                               break;
+                       }
+               } else {
+                       break;
+               }
+       }
+       
+       DWC_DEBUGPL(DBG_PCDV, "%s first_in_nextep_seq= %2d; nextep_seq[]:\n", 
+               __func__, core_if->first_in_nextep_seq);
+       for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+               DWC_DEBUGPL(DBG_PCDV,"%2d\n", core_if->nextep_seq[i]);
+       }
+
+       /* Flush the Learning Queue */
+       resetctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->grstctl);
+       resetctl.b.intknqflsh = 1;
+       DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
+       
+
+}
+
+/**
+ * handle the IN EP disable interrupt.
+ */
+static inline void handle_in_ep_disable_intr(dwc_otg_pcd_t * pcd,
+                                            const uint32_t epnum)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       deptsiz_data_t dieptsiz = {.d32 = 0 };
+       dctl_data_t dctl = {.d32 = 0 };
+       dwc_otg_pcd_ep_t *ep;
+       dwc_ep_t *dwc_ep;
+       gintmsk_data_t gintmsk_data;
+       depctl_data_t depctl;
+       uint32_t diepdma;
+       uint32_t remain_to_transfer = 0;
+       uint8_t i;
+       uint32_t xfer_size;
+       
+       ep = get_in_ep(pcd, epnum);
+       dwc_ep = &ep->dwc_ep;
+
+       if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+               dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
+               complete_ep(ep);
+               return;
+       }
+
+       DWC_DEBUGPL(DBG_PCD, "diepctl%d=%0x\n", epnum,
+                   DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl));
+       dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dieptsiz);
+       depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
+
+       DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
+                   dieptsiz.b.pktcnt, dieptsiz.b.xfersize);
+       
+       if ((core_if->start_predict == 0) || (depctl.b.eptype & 1)) { 
+               if (ep->stopped) {
+                       if (core_if->en_multiple_tx_fifo)
+                               /* Flush the Tx FIFO */
+                               dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
+                       /* Clear the Global IN NP NAK */
+                       dctl.d32 = 0;
+                       dctl.b.cgnpinnak = 1;
+                       DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32); 
+                       /* Restart the transaction */
+                       if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) {
+                               restart_transfer(pcd, epnum);
+                       }
+               } else {
+                       /* Restart the transaction */
+                       if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) {
+                               restart_transfer(pcd, epnum);
+                       }
+                       DWC_DEBUGPL(DBG_ANY, "STOPPED!!!\n");
+               }
+               return;
+       }
+
+       if (core_if->start_predict > 2) {       // NP IN EP
+               core_if->start_predict--;
+               return;
+       }
+
+       core_if->start_predict--;
+       
+       if (core_if->start_predict == 1) {      // All NP IN Ep's disabled now
+
+               predict_nextep_seq(core_if);
+                       
+               /* Update all active IN EP's NextEP field based of nextep_seq[] */
+               for ( i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+                       depctl.d32 =
+                           DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+                       if (core_if->nextep_seq[i] != 0xff) {   // Active NP IN EP
+                               depctl.b.nextep = core_if->nextep_seq[i];
+                               DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+                       }
+               }
+               /* Flush Shared NP TxFIFO */
+               dwc_otg_flush_tx_fifo(core_if, 0);
+               /* Rewind buffers */
+               if (!core_if->dma_desc_enable) {                
+                       i = core_if->first_in_nextep_seq;
+                       do {
+                               ep = get_in_ep(pcd, i);
+                               dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
+                               xfer_size = ep->dwc_ep.total_len - ep->dwc_ep.xfer_count;
+                               if (xfer_size > ep->dwc_ep.maxxfer) 
+                                       xfer_size = ep->dwc_ep.maxxfer;
+                               depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+                               if (dieptsiz.b.pktcnt != 0) {
+                                       if (xfer_size == 0) {
+                                               remain_to_transfer = 0;
+                                       } else {
+                                               if ((xfer_size % ep->dwc_ep.maxpacket) == 0) {
+                                                       remain_to_transfer = 
+                                                               dieptsiz.b.pktcnt * ep->dwc_ep.maxpacket;
+                                               } else {
+                                                       remain_to_transfer = ((dieptsiz.b.pktcnt -1) * ep->dwc_ep.maxpacket) 
+                                                               + (xfer_size % ep->dwc_ep.maxpacket);
+                                               }
+                                       }
+                                       diepdma = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepdma);
+                                       dieptsiz.b.xfersize = remain_to_transfer;
+                                       DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->dieptsiz, dieptsiz.d32);
+                                       diepdma = ep->dwc_ep.dma_addr + (xfer_size - remain_to_transfer);
+                                       DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepdma, diepdma);
+                               }
+                               i = core_if->nextep_seq[i];
+                       } while (i != core_if->first_in_nextep_seq);
+               } else { // dma_desc_enable
+                               DWC_PRINTF("%s Learning Queue not supported in DDMA\n", __func__);
+               }
+                               
+               /* Restart transfers in predicted sequences */
+               i = core_if->first_in_nextep_seq;
+               do {
+                       dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
+                       depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+                       if (dieptsiz.b.pktcnt != 0) {
+                               depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+                               depctl.b.epena = 1;
+                               depctl.b.cnak = 1;
+                               DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+                       }
+                       i = core_if->nextep_seq[i];
+               } while (i != core_if->first_in_nextep_seq);
+
+               /* Clear the global non-periodic IN NAK handshake */
+               dctl.d32 = 0;
+               dctl.b.cgnpinnak = 1;
+               DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32); 
+                       
+               /* Unmask EP Mismatch interrupt */
+               gintmsk_data.d32 = 0;
+               gintmsk_data.b.epmismatch = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, gintmsk_data.d32);
+               
+               core_if->start_predict = 0;
+
+       } 
+}
+
+/**
+ * Handler for the IN EP timeout handshake interrupt.
+ */
+static inline void handle_in_ep_timeout_intr(dwc_otg_pcd_t * pcd,
+                                            const uint32_t epnum)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+
+#ifdef DEBUG
+       deptsiz_data_t dieptsiz = {.d32 = 0 };
+       uint32_t num = 0;
+#endif
+       dctl_data_t dctl = {.d32 = 0 };
+       dwc_otg_pcd_ep_t *ep;
+
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       ep = get_in_ep(pcd, epnum);
+
+       /* Disable the NP Tx Fifo Empty Interrrupt */
+       if (!core_if->dma_enable) {
+               intr_mask.b.nptxfempty = 1;
+               DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+                                intr_mask.d32, 0);
+       }
+       /** @todo NGS Check EP type.
+        * Implement for Periodic EPs */
+       /*
+        * Non-periodic EP
+        */
+       /* Enable the Global IN NAK Effective Interrupt */
+       intr_mask.b.ginnakeff = 1;
+       DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, intr_mask.d32);
+
+       /* Set Global IN NAK */
+       dctl.b.sgnpinnak = 1;
+       DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+
+       ep->stopped = 1;
+
+#ifdef DEBUG
+       dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[num]->dieptsiz);
+       DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
+                   dieptsiz.b.pktcnt, dieptsiz.b.xfersize);
+#endif
+
+#ifdef DISABLE_PERIODIC_EP
+       /*
+        * Set the NAK bit for this EP to
+        * start the disable process.
+        */
+       diepctl.d32 = 0;
+       diepctl.b.snak = 1;
+       DWC_MODIFY_REG32(&dev_if->in_ep_regs[num]->diepctl, diepctl.d32,
+                        diepctl.d32);
+       ep->disabling = 1;
+       ep->stopped = 1;
+#endif
+}
+
+/**
+ * Handler for the IN EP NAK interrupt.
+ */
+static inline int32_t handle_in_ep_nak_intr(dwc_otg_pcd_t * pcd,
+                                           const uint32_t epnum)
+{
+       /** @todo implement ISR */
+       dwc_otg_core_if_t *core_if;
+       diepmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "IN EP NAK");
+       core_if = GET_CORE_IF(pcd);
+       intr_mask.b.nak = 1;
+
+       if (core_if->multiproc_int_enable) {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                diepeachintmsk[epnum], intr_mask.d32, 0);
+       } else {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->diepmsk,
+                                intr_mask.d32, 0);
+       }
+
+       return 1;
+}
+
+/**
+ * Handler for the OUT EP Babble interrupt.
+ */
+static inline int32_t handle_out_ep_babble_intr(dwc_otg_pcd_t * pcd,
+                                               const uint32_t epnum)
+{
+       /** @todo implement ISR */
+       dwc_otg_core_if_t *core_if;
+       doepmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_PRINTF("INTERRUPT Handler not implemented for %s\n",
+                  "OUT EP Babble");
+       core_if = GET_CORE_IF(pcd);
+       intr_mask.b.babble = 1;
+
+       if (core_if->multiproc_int_enable) {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                doepeachintmsk[epnum], intr_mask.d32, 0);
+       } else {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+                                intr_mask.d32, 0);
+       }
+
+       return 1;
+}
+
+/**
+ * Handler for the OUT EP NAK interrupt.
+ */
+static inline int32_t handle_out_ep_nak_intr(dwc_otg_pcd_t * pcd,
+                                            const uint32_t epnum)
+{
+       /** @todo implement ISR */
+       dwc_otg_core_if_t *core_if;
+       doepmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_ANY, "INTERRUPT Handler not implemented for %s\n", "OUT EP NAK");
+       core_if = GET_CORE_IF(pcd);
+       intr_mask.b.nak = 1;
+
+       if (core_if->multiproc_int_enable) {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                doepeachintmsk[epnum], intr_mask.d32, 0);
+       } else {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+                                intr_mask.d32, 0);
+       }
+
+       return 1;
+}
+
+/**
+ * Handler for the OUT EP NYET interrupt.
+ */
+static inline int32_t handle_out_ep_nyet_intr(dwc_otg_pcd_t * pcd,
+                                             const uint32_t epnum)
+{
+       /** @todo implement ISR */
+       dwc_otg_core_if_t *core_if;
+       doepmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "OUT EP NYET");
+       core_if = GET_CORE_IF(pcd);
+       intr_mask.b.nyet = 1;
+
+       if (core_if->multiproc_int_enable) {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+                                doepeachintmsk[epnum], intr_mask.d32, 0);
+       } else {
+               DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+                                intr_mask.d32, 0);
+       }
+
+       return 1;
+}
+
+/**
+ * This interrupt indicates that an IN EP has a pending Interrupt.
+ * The sequence for handling the IN EP interrupt is shown below:
+ * -#  Read the Device All Endpoint Interrupt register
+ * -#  Repeat the following for each IN EP interrupt bit set (from
+ *             LSB to MSB).
+ * -#  Read the Device Endpoint Interrupt (DIEPINTn) register
+ * -#  If "Transfer Complete" call the request complete function
+ * -#  If "Endpoint Disabled" complete the EP disable procedure.
+ * -#  If "AHB Error Interrupt" log error
+ * -#  If "Time-out Handshake" log error
+ * -#  If "IN Token Received when TxFIFO Empty" write packet to Tx
+ *             FIFO.
+ * -#  If "IN Token EP Mismatch" (disable, this is handled by EP
+ *             Mismatch Interrupt)
+ */
+static int32_t dwc_otg_pcd_handle_in_ep_intr(dwc_otg_pcd_t * pcd)
+{
+#define CLEAR_IN_EP_INTR(__core_if,__epnum,__intr) \
+do { \
+               diepint_data_t diepint = {.d32=0}; \
+               diepint.b.__intr = 1; \
+               DWC_WRITE_REG32(&__core_if->dev_if->in_ep_regs[__epnum]->diepint, \
+               diepint.d32); \
+} while (0)
+
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+       diepint_data_t diepint = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       uint32_t ep_intr;
+       uint32_t epnum = 0;
+       dwc_otg_pcd_ep_t *ep;
+       dwc_ep_t *dwc_ep;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, pcd);
+
+       /* Read in the device interrupt bits */
+       ep_intr = dwc_otg_read_dev_all_in_ep_intr(core_if);
+
+       /* Service the Device IN interrupts for each endpoint */
+       while (ep_intr) {
+               if (ep_intr & 0x1) {
+                       uint32_t empty_msk;
+                       /* Get EP pointer */
+                       ep = get_in_ep(pcd, epnum);
+                       dwc_ep = &ep->dwc_ep;
+
+                       depctl.d32 =
+                           DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
+                       empty_msk =
+                           DWC_READ_REG32(&dev_if->
+                                          dev_global_regs->dtknqr4_fifoemptymsk);
+
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "IN EP INTERRUPT - %d\nepmty_msk - %8x  diepctl - %8x\n",
+                                   epnum, empty_msk, depctl.d32);
+
+                       DWC_DEBUGPL(DBG_PCD,
+                                   "EP%d-%s: type=%d, mps=%d\n",
+                                   dwc_ep->num, (dwc_ep->is_in ? "IN" : "OUT"),
+                                   dwc_ep->type, dwc_ep->maxpacket);
+
+                       diepint.d32 =
+                           dwc_otg_read_dev_in_ep_intr(core_if, dwc_ep);
+
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "EP %d Interrupt Register - 0x%x\n", epnum,
+                                   diepint.d32);
+                       /* Transfer complete */
+                       if (diepint.b.xfercompl) {
+                               /* Disable the NP Tx FIFO Empty
+                                * Interrupt */
+                               if (core_if->en_multiple_tx_fifo == 0) {
+                                       intr_mask.b.nptxfempty = 1;
+                                       DWC_MODIFY_REG32
+                                           (&core_if->core_global_regs->gintmsk,
+                                            intr_mask.d32, 0);
+                               } else {
+                                       /* Disable the Tx FIFO Empty Interrupt for this EP */
+                                       uint32_t fifoemptymsk =
+                                           0x1 << dwc_ep->num;
+                                       DWC_MODIFY_REG32(&core_if->
+                                                        dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+                                                        fifoemptymsk, 0);
+                               }
+                               /* Clear the bit in DIEPINTn for this interrupt */
+                               CLEAR_IN_EP_INTR(core_if, epnum, xfercompl);
+
+                               /* Complete the transfer */
+                               if (epnum == 0) {
+                                       handle_ep0(pcd);
+                               }
+#ifdef DWC_EN_ISOC
+                               else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                                       if (!ep->stopped)
+                                               complete_iso_ep(pcd, ep);
+                               }
+#endif /* DWC_EN_ISOC */
+#ifdef DWC_UTE_PER_IO
+                               else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                                       if (!ep->stopped)
+                                               complete_xiso_ep(ep);
+                               }
+#endif /* DWC_UTE_PER_IO */
+                               else {
+                                       if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC && 
+                                                       dwc_ep->bInterval > 1) {
+                                               dwc_ep->frame_num += dwc_ep->bInterval;
+                                               if (dwc_ep->frame_num > 0x3FFF)
+                                               {
+                                                       dwc_ep->frm_overrun = 1;
+                                                       dwc_ep->frame_num &= 0x3FFF;
+                                               } else 
+                                                       dwc_ep->frm_overrun = 0;
+                                       }
+                                       complete_ep(ep);
+                                       if(diepint.b.nak)
+                                               CLEAR_IN_EP_INTR(core_if, epnum, nak);
+                               }
+                       }
+                       /* Endpoint disable      */
+                       if (diepint.b.epdisabled) {
+                               DWC_DEBUGPL(DBG_ANY, "EP%d IN disabled\n",
+                                           epnum);
+                               handle_in_ep_disable_intr(pcd, epnum);
+
+                               /* Clear the bit in DIEPINTn for this interrupt */
+                               CLEAR_IN_EP_INTR(core_if, epnum, epdisabled);
+                       }
+                       /* AHB Error */
+                       if (diepint.b.ahberr) {
+                               DWC_ERROR("EP%d IN AHB Error\n", epnum);
+                               /* Clear the bit in DIEPINTn for this interrupt */
+                               CLEAR_IN_EP_INTR(core_if, epnum, ahberr);
+                       }
+                       /* TimeOUT Handshake (non-ISOC IN EPs) */
+                       if (diepint.b.timeout) {
+                               DWC_ERROR("EP%d IN Time-out\n", epnum);
+                               handle_in_ep_timeout_intr(pcd, epnum);
+
+                               CLEAR_IN_EP_INTR(core_if, epnum, timeout);
+                       }
+                       /** IN Token received with TxF Empty */
+                       if (diepint.b.intktxfemp) {
+                               DWC_DEBUGPL(DBG_ANY,
+                                           "EP%d IN TKN TxFifo Empty\n",
+                                           epnum);
+                               if (!ep->stopped && epnum != 0) {
+
+                                       diepmsk_data_t diepmsk = {.d32 = 0 };
+                                       diepmsk.b.intktxfemp = 1;
+
+                                       if (core_if->multiproc_int_enable) {
+                                               DWC_MODIFY_REG32
+                                                   (&dev_if->dev_global_regs->diepeachintmsk
+                                                    [epnum], diepmsk.d32, 0);
+                                       } else {
+                                               DWC_MODIFY_REG32
+                                                   (&dev_if->dev_global_regs->diepmsk,
+                                                    diepmsk.d32, 0);
+                                       }
+                               } else if (core_if->dma_desc_enable
+                                          && epnum == 0
+                                          && pcd->ep0state ==
+                                          EP0_OUT_STATUS_PHASE) {
+                                       // EP0 IN set STALL
+                                       depctl.d32 =
+                                           DWC_READ_REG32(&dev_if->in_ep_regs
+                                                          [epnum]->diepctl);
+
+                                       /* set the disable and stall bits */
+                                       if (depctl.b.epena) {
+                                               depctl.b.epdis = 1;
+                                       }
+                                       depctl.b.stall = 1;
+                                       DWC_WRITE_REG32(&dev_if->in_ep_regs
+                                                       [epnum]->diepctl,
+                                                       depctl.d32);
+                               }
+                               CLEAR_IN_EP_INTR(core_if, epnum, intktxfemp);
+                       }
+                       /** IN Token Received with EP mismatch */
+                       if (diepint.b.intknepmis) {
+                               DWC_DEBUGPL(DBG_ANY,
+                                           "EP%d IN TKN EP Mismatch\n", epnum);
+                               CLEAR_IN_EP_INTR(core_if, epnum, intknepmis);                           
+                       }
+                       /** IN Endpoint NAK Effective */
+                       if (diepint.b.inepnakeff) {
+                               DWC_DEBUGPL(DBG_ANY,
+                                           "EP%d IN EP NAK Effective\n",
+                                           epnum);
+                               /* Periodic EP */
+                               if (ep->disabling) {
+                                       depctl.d32 = 0;
+                                       depctl.b.snak = 1;
+                                       depctl.b.epdis = 1;
+                                       DWC_MODIFY_REG32(&dev_if->in_ep_regs
+                                                        [epnum]->diepctl,
+                                                        depctl.d32,
+                                                        depctl.d32);
+                               }
+                               CLEAR_IN_EP_INTR(core_if, epnum, inepnakeff);
+
+                       }
+
+                       /** IN EP Tx FIFO Empty Intr */
+                       if (diepint.b.emptyintr) {
+                               DWC_DEBUGPL(DBG_ANY,
+                                           "EP%d Tx FIFO Empty Intr \n",
+                                           epnum);
+                               write_empty_tx_fifo(pcd, epnum);
+
+                               CLEAR_IN_EP_INTR(core_if, epnum, emptyintr);
+
+                       }
+
+                       /** IN EP BNA Intr */
+                       if (diepint.b.bna) {
+                               CLEAR_IN_EP_INTR(core_if, epnum, bna);
+                               if (core_if->dma_desc_enable) {
+#ifdef DWC_EN_ISOC
+                                       if (dwc_ep->type ==
+                                           DWC_OTG_EP_TYPE_ISOC) {
+                                               /*
+                                                * This checking is performed to prevent first "false" BNA
+                                                * handling occuring right after reconnect
+                                                */
+                                               if (dwc_ep->next_frame !=
+                                                   0xffffffff)
+                                                       dwc_otg_pcd_handle_iso_bna(ep);
+                                       } else
+#endif                         /* DWC_EN_ISOC */
+                                       {
+                                               dwc_otg_pcd_handle_noniso_bna(ep);
+                                       }
+                               }
+                       }
+                       /* NAK Interrutp */
+                       if (diepint.b.nak) {
+                               DWC_DEBUGPL(DBG_ANY, "EP%d IN NAK Interrupt\n",
+                                           epnum);
+                               if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+                                       depctl_data_t depctl;
+                                       if (ep->dwc_ep.frame_num == 0xFFFFFFFF) {
+                                               ep->dwc_ep.frame_num = core_if->frame_num;
+                                               if (ep->dwc_ep.bInterval > 1) {
+                                                       depctl.d32 = 0;
+                                                       depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
+                                                       if (ep->dwc_ep.frame_num & 0x1) {
+                                                               depctl.b.setd1pid = 1;
+                                                               depctl.b.setd0pid = 0;
+                                                       } else {
+                                                               depctl.b.setd0pid = 1;
+                                                               depctl.b.setd1pid = 0;
+                                                       }
+                                                       DWC_WRITE_REG32(&dev_if->in_ep_regs[epnum]->diepctl, depctl.d32);
+                                               }
+                                               start_next_request(ep);
+                                       }
+                                       ep->dwc_ep.frame_num += ep->dwc_ep.bInterval;
+                                       if (dwc_ep->frame_num > 0x3FFF) {
+                                               dwc_ep->frm_overrun = 1;
+                                               dwc_ep->frame_num &= 0x3FFF;
+                                       } else 
+                                               dwc_ep->frm_overrun = 0;
+                               }
+
+                               CLEAR_IN_EP_INTR(core_if, epnum, nak);
+                       }
+               }
+               epnum++;
+               ep_intr >>= 1;
+       }
+
+       return 1;
+#undef CLEAR_IN_EP_INTR
+}
+
+/**
+ * This interrupt indicates that an OUT EP has a pending Interrupt.
+ * The sequence for handling the OUT EP interrupt is shown below:
+ * -#  Read the Device All Endpoint Interrupt register
+ * -#  Repeat the following for each OUT EP interrupt bit set (from
+ *             LSB to MSB).
+ * -#  Read the Device Endpoint Interrupt (DOEPINTn) register
+ * -#  If "Transfer Complete" call the request complete function
+ * -#  If "Endpoint Disabled" complete the EP disable procedure.
+ * -#  If "AHB Error Interrupt" log error
+ * -#  If "Setup Phase Done" process Setup Packet (See Standard USB
+ *             Command Processing)
+ */
+static int32_t dwc_otg_pcd_handle_out_ep_intr(dwc_otg_pcd_t * pcd)
+{
+#define CLEAR_OUT_EP_INTR(__core_if,__epnum,__intr) \
+do { \
+               doepint_data_t doepint = {.d32=0}; \
+               doepint.b.__intr = 1; \
+               DWC_WRITE_REG32(&__core_if->dev_if->out_ep_regs[__epnum]->doepint, \
+               doepint.d32); \
+} while (0)
+
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       uint32_t ep_intr;
+       doepint_data_t doepint = {.d32 = 0 };
+       uint32_t epnum = 0;
+       dwc_otg_pcd_ep_t *ep;
+       dwc_ep_t *dwc_ep;
+       dctl_data_t dctl = {.d32 = 0 };
+       gintmsk_data_t gintmsk = {.d32 = 0 };
+
+
+       DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
+
+       /* Read in the device interrupt bits */
+       ep_intr = dwc_otg_read_dev_all_out_ep_intr(core_if);
+
+       while (ep_intr) {
+               if (ep_intr & 0x1) {
+                       /* Get EP pointer */
+                       ep = get_out_ep(pcd, epnum);
+                       dwc_ep = &ep->dwc_ep;
+
+#ifdef VERBOSE
+                       DWC_DEBUGPL(DBG_PCDV,
+                                   "EP%d-%s: type=%d, mps=%d\n",
+                                   dwc_ep->num, (dwc_ep->is_in ? "IN" : "OUT"),
+                                   dwc_ep->type, dwc_ep->maxpacket);
+#endif
+                       doepint.d32 =
+                           dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep);
+                       /* Moved this interrupt upper due to core deffect of asserting
+                        * OUT EP 0 xfercompl along with stsphsrcvd in BDMA */
+                       if (doepint.b.stsphsercvd) {
+                               deptsiz0_data_t deptsiz;
+                               CLEAR_OUT_EP_INTR(core_if, epnum, stsphsercvd);
+                               deptsiz.d32 =
+                                   DWC_READ_REG32(&core_if->dev_if->
+                                                  out_ep_regs[0]->doeptsiz);
+                               if (core_if->snpsid >= OTG_CORE_REV_3_00a
+                                   && core_if->dma_enable
+                                   && core_if->dma_desc_enable == 0
+                                   && doepint.b.xfercompl
+                                   && deptsiz.b.xfersize == 24) {
+                                       CLEAR_OUT_EP_INTR(core_if, epnum,
+                                                         xfercompl);
+                                       doepint.b.xfercompl = 0;
+                                       ep0_out_start(core_if, pcd);
+                               }
+                               if ((core_if->dma_desc_enable) ||
+                                   (core_if->dma_enable
+                                    && core_if->snpsid >=
+                                    OTG_CORE_REV_3_00a)) {
+                                       do_setup_in_status_phase(pcd);
+                               }
+                       }
+                       /* Transfer complete */
+                       if (doepint.b.xfercompl) {
+
+                               if (epnum == 0) {
+                                       /* Clear the bit in DOEPINTn for this interrupt */
+                                       CLEAR_OUT_EP_INTR(core_if, epnum, xfercompl);
+                                       if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+                                               DWC_DEBUGPL(DBG_PCDV, "DOEPINT=%x doepint=%x\n",
+                                                       DWC_READ_REG32(&core_if->dev_if->out_ep_regs[0]->doepint),
+                                                       doepint.d32);
+                                               DWC_DEBUGPL(DBG_PCDV, "DOEPCTL=%x \n",
+                                                       DWC_READ_REG32(&core_if->dev_if->out_ep_regs[0]->doepctl));
+
+                                               if (core_if->snpsid >= OTG_CORE_REV_3_00a
+                                                       && core_if->dma_enable == 0) {
+                                                       doepint_data_t doepint;
+                                                       doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                               out_ep_regs[0]->doepint);
+                                                       if (pcd->ep0state == EP0_IDLE && doepint.b.sr) {
+                                                               CLEAR_OUT_EP_INTR(core_if, epnum, sr);
+                                                               goto exit_xfercompl;
+                                                       }
+                                               }
+                                               /* In case of DDMA  look at SR bit to go to the Data Stage */
+                                               if (core_if->dma_desc_enable) {
+                                                       dev_dma_desc_sts_t status = {.d32 = 0};
+                                                       if (pcd->ep0state == EP0_IDLE) {
+                                                               status.d32 = core_if->dev_if->setup_desc_addr[core_if->
+                                                                                       dev_if->setup_desc_index]->status.d32;
+                                                               if(pcd->data_terminated) {
+                                                                        pcd->data_terminated = 0;
+                                                                        status.d32 = core_if->dev_if->out_desc_addr->status.d32;
+                                                                        dwc_memcpy(&pcd->setup_pkt->req, pcd->backup_buf, 8);
+                                                               }
+                                                               if (status.b.sr) {
+                                                                       if (doepint.b.setup) {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "DMA DESC EP0_IDLE SR=1 setup=1\n");
+                                                                               /* Already started data stage, clear setup */
+                                                                               CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+                                                                               doepint.b.setup = 0;
+                                                                               handle_ep0(pcd);
+                                                                               /* Prepare for more setup packets */
+                                                                               if (pcd->ep0state == EP0_IN_STATUS_PHASE ||
+                                                                                       pcd->ep0state == EP0_IN_DATA_PHASE) {
+                                                                                       ep0_out_start(core_if, pcd);
+                                                                               }
+
+                                                                               goto exit_xfercompl;
+                                                                       } else {
+                                                                               /* Prepare for more setup packets */
+                                                                               DWC_DEBUGPL(DBG_PCDV,
+                                                                                       "EP0_IDLE SR=1 setup=0 new setup comes\n");
+                                                                               ep0_out_start(core_if, pcd);
+                                                                       }
+                                                               }
+                                                       } else {
+                                                               dwc_otg_pcd_request_t *req;
+                                                               dev_dma_desc_sts_t status = {.d32 = 0};
+                                                               diepint_data_t diepint0;
+                                                               diepint0.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                       in_ep_regs[0]->diepint);
+
+                                                               if (pcd->ep0state == EP0_STALL || pcd->ep0state == EP0_DISCONNECT) {
+                                                                       DWC_ERROR("EP0 is stalled/disconnected\n");
+                                                               }
+
+                                                               /* Clear IN xfercompl if set */
+                                                               if (diepint0.b.xfercompl && (pcd->ep0state == EP0_IN_STATUS_PHASE
+                                                                       || pcd->ep0state == EP0_IN_DATA_PHASE)) {
+                                                                       DWC_WRITE_REG32(&core_if->dev_if->
+                                                                               in_ep_regs[0]->diepint, diepint0.d32);
+                                                               }
+
+                                                               status.d32 = core_if->dev_if->setup_desc_addr[core_if->
+                                                                       dev_if->setup_desc_index]->status.d32;
+
+                                                               if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len
+                                                                       && (pcd->ep0state == EP0_OUT_DATA_PHASE))
+                                                                       status.d32 = core_if->dev_if->out_desc_addr->status.d32;
+                                                               if (pcd->ep0state == EP0_OUT_STATUS_PHASE)
+                                                                       status.d32 = status.d32 = core_if->dev_if->
+                                                                       out_desc_addr->status.d32;
+
+                                                               if (status.b.sr) {
+                                                                       if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "Request queue empty!!\n");
+                                                                       } else {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "complete req!!\n");
+                                                                               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+                                                                               if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len &&
+                                                                                       pcd->ep0state == EP0_OUT_DATA_PHASE) {
+                                                                                               /* Read arrived setup packet from req->buf */
+                                                                                               dwc_memcpy(&pcd->setup_pkt->req,
+                                                                                                       req->buf + ep->dwc_ep.xfer_count, 8);
+                                                                               }
+                                                                               req->actual = ep->dwc_ep.xfer_count;
+                                                                               dwc_otg_request_done(ep, req, -ECONNRESET);
+                                                                               ep->dwc_ep.start_xfer_buff = 0;
+                                                                               ep->dwc_ep.xfer_buff = 0;
+                                                                               ep->dwc_ep.xfer_len = 0;
+                                                                       }
+                                                                       pcd->ep0state = EP0_IDLE;
+                                                                       if (doepint.b.setup) {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "EP0_IDLE SR=1 setup=1\n");
+                                                                               /* Data stage started, clear setup */
+                                                                               CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+                                                                               doepint.b.setup = 0;
+                                                                               handle_ep0(pcd);
+                                                                               /* Prepare for setup packets if ep0in was enabled*/
+                                                                               if (pcd->ep0state == EP0_IN_STATUS_PHASE) {
+                                                                                       ep0_out_start(core_if, pcd);
+                                                                               }
+
+                                                                               goto exit_xfercompl;
+                                                                       } else {
+                                                                               /* Prepare for more setup packets */
+                                                                               DWC_DEBUGPL(DBG_PCDV,
+                                                                                       "EP0_IDLE SR=1 setup=0 new setup comes 2\n");
+                                                                               ep0_out_start(core_if, pcd);
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+                                               if (core_if->snpsid >= OTG_CORE_REV_2_94a && core_if->dma_enable
+                                                       && core_if->dma_desc_enable == 0) {
+                                                       doepint_data_t doepint_temp = {.d32 = 0};
+                                                       deptsiz0_data_t doeptsize0 = {.d32 = 0 };
+                                                       doepint_temp.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                       out_ep_regs[ep->dwc_ep.num]->doepint);
+                                                       doeptsize0.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                       out_ep_regs[ep->dwc_ep.num]->doeptsiz);
+                                                       if (pcd->ep0state == EP0_IDLE) {
+                                                               if (doepint_temp.b.sr) {
+                                                                       CLEAR_OUT_EP_INTR(core_if, epnum, sr);
+                                                               }
+                                                                       doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                                       out_ep_regs[0]->doepint);
+                                                                       if (doeptsize0.b.supcnt == 3) {
+                                                                               DWC_DEBUGPL(DBG_ANY, "Rolling over!!!!!!!\n");
+                                                                               ep->dwc_ep.stp_rollover = 1;
+                                                                       }
+                                                                       if (doepint.b.setup) {
+retry:
+                                                                               /* Already started data stage, clear setup */
+                                                                               CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+                                                                               doepint.b.setup = 0;
+                                                                               handle_ep0(pcd);
+                                                                               ep->dwc_ep.stp_rollover = 0;
+                                                                               /* Prepare for more setup packets */
+                                                                               if (pcd->ep0state == EP0_IN_STATUS_PHASE ||
+                                                                                       pcd->ep0state == EP0_IN_DATA_PHASE) {
+                                                                                       ep0_out_start(core_if, pcd);
+                                                                               }
+                                                                               goto exit_xfercompl;
+                                                                       } else {
+                                                                               /* Prepare for more setup packets */
+                                                                               DWC_DEBUGPL(DBG_ANY,
+                                                                                       "EP0_IDLE SR=1 setup=0 new setup comes\n");
+                                                                               doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                                       out_ep_regs[0]->doepint);
+                                                                               if(doepint.b.setup)
+                                                                                       goto retry;
+                                                                               ep0_out_start(core_if, pcd);
+                                                                       }
+                                                       } else {
+                                                               dwc_otg_pcd_request_t *req;
+                                                               diepint_data_t diepint0 = {.d32 = 0};
+                                                               doepint_data_t doepint_temp = {.d32 = 0};
+                                                               depctl_data_t diepctl0;
+                                                               diepint0.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                               in_ep_regs[0]->diepint);
+                                                               diepctl0.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                               in_ep_regs[0]->diepctl);
+
+                                                               if (pcd->ep0state == EP0_IN_DATA_PHASE
+                                                                       || pcd->ep0state == EP0_IN_STATUS_PHASE) {
+                                                                       if (diepint0.b.xfercompl) {
+                                                                               DWC_WRITE_REG32(&core_if->dev_if->
+                                                                                       in_ep_regs[0]->diepint, diepint0.d32);
+                                                                       }
+                                                                       if (diepctl0.b.epena) {
+                                                                               diepint_data_t diepint = {.d32 = 0};
+                                                                               diepctl0.b.snak = 1;
+                                                                               DWC_WRITE_REG32(&core_if->dev_if->
+                                                                                                               in_ep_regs[0]->diepctl, diepctl0.d32);
+                                                                               do {
+                                                                                       dwc_udelay(10);
+                                                                                       diepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                               in_ep_regs[0]->diepint);
+                                                                               } while (!diepint.b.inepnakeff);
+                                                                               diepint.b.inepnakeff = 1;
+                                                                               DWC_WRITE_REG32(&core_if->dev_if->
+                                                                                       in_ep_regs[0]->diepint, diepint.d32);
+                                                                               diepctl0.d32 = 0;
+                                                                               diepctl0.b.epdis = 1;
+                                                                               DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[0]->diepctl,
+                                                                                                               diepctl0.d32);
+                                                                               do {
+                                                                                       dwc_udelay(10);
+                                                                                       diepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                               in_ep_regs[0]->diepint);
+                                                                               } while (!diepint.b.epdisabled);
+                                                                               diepint.b.epdisabled = 1;
+                                                                               DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[0]->diepint,
+                                                                                                                       diepint.d32);
+                                                                       }
+                                                               }
+                                                               doepint_temp.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                                               out_ep_regs[ep->dwc_ep.num]->doepint);
+                                                               if (doepint_temp.b.sr) {
+                                                                       CLEAR_OUT_EP_INTR(core_if, epnum, sr);
+                                                                       if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "Request queue empty!!\n");
+                                                                       } else {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "complete req!!\n");
+                                                                               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+                                                                               if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len &&
+                                                                                       pcd->ep0state == EP0_OUT_DATA_PHASE) {
+                                                                                               /* Read arrived setup packet from req->buf */
+                                                                                               dwc_memcpy(&pcd->setup_pkt->req,
+                                                                                                       req->buf + ep->dwc_ep.xfer_count, 8);
+                                                                               }
+                                                                               req->actual = ep->dwc_ep.xfer_count;
+                                                                               dwc_otg_request_done(ep, req, -ECONNRESET);
+                                                                               ep->dwc_ep.start_xfer_buff = 0;
+                                                                               ep->dwc_ep.xfer_buff = 0;
+                                                                               ep->dwc_ep.xfer_len = 0;
+                                                                       }
+                                                                       pcd->ep0state = EP0_IDLE;
+                                                                       if (doepint.b.setup) {
+                                                                               DWC_DEBUGPL(DBG_PCDV, "EP0_IDLE SR=1 setup=1\n");
+                                                                               /* Data stage started, clear setup */
+                                                                               CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+                                                                               doepint.b.setup = 0;
+                                                                               handle_ep0(pcd);
+                                                                               /* Prepare for setup packets if ep0in was enabled*/
+                                                                               if (pcd->ep0state == EP0_IN_STATUS_PHASE) {
+                                                                                       ep0_out_start(core_if, pcd);
+                                                                               }
+                                                                               goto exit_xfercompl;
+                                                                       } else {
+                                                                               /* Prepare for more setup packets */
+                                                                               DWC_DEBUGPL(DBG_PCDV,
+                                                                                       "EP0_IDLE SR=1 setup=0 new setup comes 2\n");
+                                                                               ep0_out_start(core_if, pcd);
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+                                               if (core_if->dma_enable == 0 || pcd->ep0state != EP0_IDLE)
+                                                       handle_ep0(pcd);
+exit_xfercompl:
+                                               DWC_DEBUGPL(DBG_PCDV, "DOEPINT=%x doepint=%x\n",
+                                                       dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep), doepint.d32);
+                                       } else {
+                                       if (core_if->dma_desc_enable == 0
+                                           || pcd->ep0state != EP0_IDLE)
+                                               handle_ep0(pcd);
+                                       }
+#ifdef DWC_EN_ISOC
+                               } else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                                       if (doepint.b.pktdrpsts == 0) {
+                                               /* Clear the bit in DOEPINTn for this interrupt */
+                                               CLEAR_OUT_EP_INTR(core_if,
+                                                                 epnum,
+                                                                 xfercompl);
+                                               complete_iso_ep(pcd, ep);
+                                       } else {
+
+                                               doepint_data_t doepint = {.d32 = 0 };
+                                               doepint.b.xfercompl = 1;
+                                               doepint.b.pktdrpsts = 1;
+                                               DWC_WRITE_REG32
+                                                   (&core_if->dev_if->out_ep_regs
+                                                    [epnum]->doepint,
+                                                    doepint.d32);
+                                               if (handle_iso_out_pkt_dropped
+                                                   (core_if, dwc_ep)) {
+                                                       complete_iso_ep(pcd,
+                                                                       ep);
+                                               }
+                                       }
+#endif /* DWC_EN_ISOC */
+#ifdef DWC_UTE_PER_IO
+                               } else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                                       CLEAR_OUT_EP_INTR(core_if, epnum, xfercompl);
+                                       if (!ep->stopped)
+                                               complete_xiso_ep(ep);
+#endif /* DWC_UTE_PER_IO */
+                               } else {
+                                       /* Clear the bit in DOEPINTn for this interrupt */
+                                       CLEAR_OUT_EP_INTR(core_if, epnum,
+                                                         xfercompl);
+
+                                       if (core_if->core_params->dev_out_nak) {
+                                               DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[epnum]);
+                                               pcd->core_if->ep_xfer_info[epnum].state = 0;
+#ifdef DEBUG
+                                               print_memory_payload(pcd, dwc_ep);
+#endif
+                                       }
+                                       complete_ep(ep);                                                
+                               }
+
+                       }
+
+                       /* Endpoint disable      */
+                       if (doepint.b.epdisabled) {
+
+                               /* Clear the bit in DOEPINTn for this interrupt */
+                               CLEAR_OUT_EP_INTR(core_if, epnum, epdisabled);
+                               if (core_if->core_params->dev_out_nak) {
+#ifdef DEBUG
+                                       print_memory_payload(pcd, dwc_ep);
+#endif
+                                       /* In case of timeout condition */
+                                       if (core_if->ep_xfer_info[epnum].state == 2) {
+                                               dctl.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                               dev_global_regs->dctl);
+                                               dctl.b.cgoutnak = 1;
+                                               DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
+                                                                                                                               dctl.d32);
+                                               /* Unmask goutnakeff interrupt which was masked
+                                                * during handle nak out interrupt */
+                                               gintmsk.b.goutnakeff = 1;
+                                               DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+                                                                                                                               0, gintmsk.d32);
+                                       
+                                               complete_ep(ep);
+                                       }
+                               }
+                               if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC)
+                               {
+                                       dctl_data_t dctl;
+                                       gintmsk_data_t intr_mask = {.d32 = 0};
+                                       dwc_otg_pcd_request_t *req = 0;
+
+                                       dctl.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                               dev_global_regs->dctl);
+                                       dctl.b.cgoutnak = 1;
+                                       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
+                                               dctl.d32);
+
+                                       intr_mask.d32 = 0;
+                                       intr_mask.b.incomplisoout = 1;     
+
+                                       /* Get any pending requests */
+                                       if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+                                               req = DWC_CIRCLEQ_FIRST(&ep->queue);
+                                               if (!req) {
+                                                       DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
+                                               } else {
+                                                       dwc_otg_request_done(ep, req, 0);
+                                                       start_next_request(ep);
+                                               }
+                                       } else {
+                                               DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
+                                       }
+                               }
+                       }
+                       /* AHB Error */
+                       if (doepint.b.ahberr) {
+                               DWC_ERROR("EP%d OUT AHB Error\n", epnum);
+                               DWC_ERROR("EP%d DEPDMA=0x%08x \n",
+                                         epnum, core_if->dev_if->out_ep_regs[epnum]->doepdma);
+                               CLEAR_OUT_EP_INTR(core_if, epnum, ahberr);
+                       }
+                       /* Setup Phase Done (contorl EPs) */
+                       if (doepint.b.setup) {
+#ifdef DEBUG_EP0
+                               DWC_DEBUGPL(DBG_PCD, "EP%d SETUP Done\n", epnum);
+#endif
+                               CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+
+                               handle_ep0(pcd);
+                       }
+
+                       /** OUT EP BNA Intr */
+                       if (doepint.b.bna) {
+                               CLEAR_OUT_EP_INTR(core_if, epnum, bna);
+                               if (core_if->dma_desc_enable) {
+#ifdef DWC_EN_ISOC
+                                       if (dwc_ep->type ==
+                                           DWC_OTG_EP_TYPE_ISOC) {
+                                               /*
+                                                * This checking is performed to prevent first "false" BNA
+                                                * handling occuring right after reconnect
+                                                */
+                                               if (dwc_ep->next_frame !=
+                                                   0xffffffff)
+                                                       dwc_otg_pcd_handle_iso_bna(ep);
+                                       } else
+#endif                         /* DWC_EN_ISOC */
+                                       {
+                                               dwc_otg_pcd_handle_noniso_bna(ep);
+                                       }
+                               }
+                       }
+                       /* Babble Interrupt */
+                       if (doepint.b.babble) {
+                               DWC_DEBUGPL(DBG_ANY, "EP%d OUT Babble\n",
+                                           epnum);
+                               handle_out_ep_babble_intr(pcd, epnum);
+
+                               CLEAR_OUT_EP_INTR(core_if, epnum, babble);
+                       }
+                       if (doepint.b.outtknepdis) {
+                               DWC_DEBUGPL(DBG_ANY, "EP%d OUT Token received when EP is \
+                                       disabled\n",epnum);
+                               if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+                                       doepmsk_data_t doepmsk = {.d32 = 0};
+                                       ep->dwc_ep.frame_num = core_if->frame_num;
+                                       if (ep->dwc_ep.bInterval > 1) {
+                                               depctl_data_t depctl;
+                                               depctl.d32 = DWC_READ_REG32(&core_if->dev_if->
+                                                                                                       out_ep_regs[epnum]->doepctl);
+                                               if (ep->dwc_ep.frame_num & 0x1) {
+                                                       depctl.b.setd1pid = 1;
+                                                       depctl.b.setd0pid = 0;
+                                               } else {
+                                                       depctl.b.setd0pid = 1;
+                                                       depctl.b.setd1pid = 0;
+                                               }
+                                               DWC_WRITE_REG32(&core_if->dev_if->
+                                                                               out_ep_regs[epnum]->doepctl, depctl.d32);
+                                       }
+                                       start_next_request(ep);
+                                       doepmsk.b.outtknepdis = 1;
+                                       DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk, 
+                                                                doepmsk.d32, 0);
+                               }
+                               CLEAR_OUT_EP_INTR(core_if, epnum, outtknepdis);
+                       }
+                       
+                       /* NAK Interrutp */
+                       if (doepint.b.nak) {
+                               DWC_DEBUGPL(DBG_ANY, "EP%d OUT NAK\n", epnum);
+                               handle_out_ep_nak_intr(pcd, epnum);
+
+                               CLEAR_OUT_EP_INTR(core_if, epnum, nak);
+                       }
+                       /* NYET Interrutp */
+                       if (doepint.b.nyet) {
+                               DWC_DEBUGPL(DBG_ANY, "EP%d OUT NYET\n", epnum);
+                               handle_out_ep_nyet_intr(pcd, epnum);
+
+                               CLEAR_OUT_EP_INTR(core_if, epnum, nyet);
+                       }
+               }
+
+               epnum++;
+               ep_intr >>= 1;
+       }
+
+       return 1;
+
+#undef CLEAR_OUT_EP_INTR
+}
+static int drop_transfer(uint32_t trgt_fr, uint32_t curr_fr, uint8_t frm_overrun)
+{
+       int retval = 0;
+       if(!frm_overrun && curr_fr >= trgt_fr) 
+               retval = 1;
+       else if (frm_overrun
+                && (curr_fr >= trgt_fr && ((curr_fr - trgt_fr) < 0x3FFF / 2)))
+               retval = 1;
+       return retval;
+}
+/**
+ * Incomplete ISO IN Transfer Interrupt.
+ * This interrupt indicates one of the following conditions occurred
+ * while transmitting an ISOC transaction.
+ * - Corrupted IN Token for ISOC EP.
+ * - Packet not complete in FIFO.
+ * The follow actions will be taken:
+ *     -#      Determine the EP
+ *     -#      Set incomplete flag in dwc_ep structure
+ *     -#      Disable EP; when "Endpoint Disabled" interrupt is received
+ *             Flush FIFO
+ */
+int32_t dwc_otg_pcd_handle_incomplete_isoc_in_intr(dwc_otg_pcd_t * pcd)
+{
+       gintsts_data_t gintsts;
+
+#ifdef DWC_EN_ISOC
+       dwc_otg_dev_if_t *dev_if;
+       deptsiz_data_t deptsiz = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       dsts_data_t dsts = {.d32 = 0 };
+       dwc_ep_t *dwc_ep;
+       int i;
+
+       dev_if = GET_CORE_IF(pcd)->dev_if;
+
+       for (i = 1; i <= dev_if->num_in_eps; ++i) {
+               dwc_ep = &pcd->in_ep[i].dwc_ep;
+               if (dwc_ep->active && dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       deptsiz.d32 =
+                           DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
+                       depctl.d32 =
+                           DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+
+                       if (depctl.b.epdis && deptsiz.d32) {
+                               set_current_pkt_info(GET_CORE_IF(pcd), dwc_ep);
+                               if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+                                       dwc_ep->cur_pkt = 0;
+                                       dwc_ep->proc_buf_num =
+                                           (dwc_ep->proc_buf_num ^ 1) & 0x1;
+
+                                       if (dwc_ep->proc_buf_num) {
+                                               dwc_ep->cur_pkt_addr =
+                                                   dwc_ep->xfer_buff1;
+                                               dwc_ep->cur_pkt_dma_addr =
+                                                   dwc_ep->dma_addr1;
+                                       } else {
+                                               dwc_ep->cur_pkt_addr =
+                                                   dwc_ep->xfer_buff0;
+                                               dwc_ep->cur_pkt_dma_addr =
+                                                   dwc_ep->dma_addr0;
+                                       }
+
+                               }
+
+                               dsts.d32 =
+                                   DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
+                                                  dev_global_regs->dsts);
+                               dwc_ep->next_frame = dsts.b.soffn;
+
+                               dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF
+                                                                 (pcd),
+                                                                 dwc_ep);
+                       }
+               }
+       }
+
+#else
+       depctl_data_t depctl = {.d32 = 0 };
+       dwc_ep_t *dwc_ep;
+       dwc_otg_dev_if_t *dev_if;
+       int i;
+       dev_if = GET_CORE_IF(pcd)->dev_if;
+
+       DWC_DEBUGPL(DBG_PCD,"Incomplete ISO IN \n");
+       
+       for (i = 1; i <= dev_if->num_in_eps; ++i) {
+               dwc_ep = &pcd->in_ep[i-1].dwc_ep;
+               depctl.d32 =
+                       DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+               if (depctl.b.epena && dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       if (drop_transfer(dwc_ep->frame_num, GET_CORE_IF(pcd)->frame_num, 
+                                                       dwc_ep->frm_overrun))
+                       {
+                               depctl.d32 =
+                                       DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+                               depctl.b.snak = 1;
+                               depctl.b.epdis = 1;
+                               DWC_MODIFY_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32, depctl.d32);
+                       }
+               }
+       }
+
+       /*intr_mask.b.incomplisoin = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+                        intr_mask.d32, 0);      */
+#endif                         //DWC_EN_ISOC
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.incomplisoin = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * Incomplete ISO OUT Transfer Interrupt.
+ *
+ * This interrupt indicates that the core has dropped an ISO OUT
+ * packet. The following conditions can be the cause:
+ * - FIFO Full, the entire packet would not fit in the FIFO.
+ * - CRC Error
+ * - Corrupted Token
+ * The follow actions will be taken:
+ *     -#      Determine the EP
+ *     -#      Set incomplete flag in dwc_ep structure
+ *     -#      Read any data from the FIFO
+ *     -#      Disable EP. When "Endpoint Disabled" interrupt is received
+ *             re-enable EP.
+ */
+int32_t dwc_otg_pcd_handle_incomplete_isoc_out_intr(dwc_otg_pcd_t * pcd)
+{
+
+       gintsts_data_t gintsts;
+
+#ifdef DWC_EN_ISOC
+       dwc_otg_dev_if_t *dev_if;
+       deptsiz_data_t deptsiz = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       dsts_data_t dsts = {.d32 = 0 };
+       dwc_ep_t *dwc_ep;
+       int i;
+
+       dev_if = GET_CORE_IF(pcd)->dev_if;
+
+       for (i = 1; i <= dev_if->num_out_eps; ++i) {
+               dwc_ep = &pcd->in_ep[i].dwc_ep;
+               if (pcd->out_ep[i].dwc_ep.active &&
+                   pcd->out_ep[i].dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+                       deptsiz.d32 =
+                           DWC_READ_REG32(&dev_if->out_ep_regs[i]->doeptsiz);
+                       depctl.d32 =
+                           DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
+
+                       if (depctl.b.epdis && deptsiz.d32) {
+                               set_current_pkt_info(GET_CORE_IF(pcd),
+                                                    &pcd->out_ep[i].dwc_ep);
+                               if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+                                       dwc_ep->cur_pkt = 0;
+                                       dwc_ep->proc_buf_num =
+                                           (dwc_ep->proc_buf_num ^ 1) & 0x1;
+
+                                       if (dwc_ep->proc_buf_num) {
+                                               dwc_ep->cur_pkt_addr =
+                                                   dwc_ep->xfer_buff1;
+                                               dwc_ep->cur_pkt_dma_addr =
+                                                   dwc_ep->dma_addr1;
+                                       } else {
+                                               dwc_ep->cur_pkt_addr =
+                                                   dwc_ep->xfer_buff0;
+                                               dwc_ep->cur_pkt_dma_addr =
+                                                   dwc_ep->dma_addr0;
+                                       }
+
+                               }
+
+                               dsts.d32 =
+                                   DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
+                                                  dev_global_regs->dsts);
+                               dwc_ep->next_frame = dsts.b.soffn;
+
+                               dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF
+                                                                 (pcd),
+                                                                 dwc_ep);
+                       }
+               }
+       }
+#else
+       /** @todo implement ISR */
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       dwc_otg_core_if_t *core_if;
+       deptsiz_data_t deptsiz = {.d32 = 0 };
+       depctl_data_t depctl = {.d32 = 0 };
+       dctl_data_t dctl = {.d32 = 0 };
+       dwc_ep_t *dwc_ep = NULL;
+       int i;
+       core_if = GET_CORE_IF(pcd);
+
+       for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+               dwc_ep = &pcd->out_ep[i].dwc_ep;
+               depctl.d32 =
+                       DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl);
+               if (depctl.b.epena && depctl.b.dpid == (core_if->frame_num & 0x1)) {
+                       core_if->dev_if->isoc_ep = dwc_ep;      
+                       deptsiz.d32 =
+                                       DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz);
+                               break;
+               }
+       }
+       dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+       gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+       intr_mask.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+
+       if (!intr_mask.b.goutnakeff) {
+               /* Unmask it */
+               intr_mask.b.goutnakeff = 1;
+               DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, intr_mask.d32);
+       }
+       if (!gintsts.b.goutnakeff) {
+               dctl.b.sgoutnak = 1;
+       }
+       DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+
+       depctl.d32 = DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl);
+       if (depctl.b.epena) {
+               depctl.b.epdis = 1;
+               depctl.b.snak = 1;
+       }
+       DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl, depctl.d32);
+
+       intr_mask.d32 = 0;
+       intr_mask.b.incomplisoout = 1;
+               
+#endif /* DWC_EN_ISOC */
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.incomplisoout = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * This function handles the Global IN NAK Effective interrupt.
+ *
+ */
+int32_t dwc_otg_pcd_handle_in_nak_effective(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+       depctl_data_t diepctl = {.d32 = 0 };
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       gintsts_data_t gintsts;
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+       int i;
+
+       DWC_DEBUGPL(DBG_PCD, "Global IN NAK Effective\n");
+
+       /* Disable all active IN EPs */
+       for (i = 0; i <= dev_if->num_in_eps; i++) {
+               diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+               if (!(diepctl.b.eptype & 1) && diepctl.b.epena) {
+                       if (core_if->start_predict > 0)
+                               core_if->start_predict++;
+                       diepctl.b.epdis = 1;
+                       diepctl.b.snak = 1;
+                       DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, diepctl.d32);
+               }                                               
+       }
+       
+
+       /* Disable the Global IN NAK Effective Interrupt */
+       intr_mask.b.ginnakeff = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+                        intr_mask.d32, 0);
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.ginnakeff = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * OUT NAK Effective.
+ *
+ */
+int32_t dwc_otg_pcd_handle_out_nak_effective(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+       gintmsk_data_t intr_mask = {.d32 = 0 };
+       gintsts_data_t gintsts;
+       depctl_data_t doepctl;
+       int i;
+
+       /* Disable the Global OUT NAK Effective Interrupt */
+       intr_mask.b.goutnakeff = 1;
+       DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+               intr_mask.d32, 0);
+       
+       /* If DEV OUT NAK enabled*/
+       if (pcd->core_if->core_params->dev_out_nak) {
+               /* Run over all out endpoints to determine the ep number on
+                * which the timeout has happened 
+                */
+               for (i = 0; i <= dev_if->num_out_eps; i++) {
+                       if ( pcd->core_if->ep_xfer_info[i].state == 2 )
+                               break;
+               }
+               if (i > dev_if->num_out_eps) {
+                       dctl_data_t dctl;
+                       dctl.d32 =
+                           DWC_READ_REG32(&dev_if->dev_global_regs->dctl);
+                       dctl.b.cgoutnak = 1;
+                       DWC_WRITE_REG32(&dev_if->dev_global_regs->dctl,
+                               dctl.d32);
+                       goto out;
+               }
+
+               /* Disable the endpoint */
+               doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
+               if (doepctl.b.epena) {
+                       doepctl.b.epdis = 1;
+                       doepctl.b.snak = 1;
+               }
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, doepctl.d32);
+               return 1;
+       }
+       /* We come here from Incomplete ISO OUT handler */
+       if (dev_if->isoc_ep) {
+               dwc_ep_t *dwc_ep = (dwc_ep_t *)dev_if->isoc_ep;
+               uint32_t epnum = dwc_ep->num;
+               doepint_data_t doepint;
+               doepint.d32 =
+                   DWC_READ_REG32(&dev_if->out_ep_regs[dwc_ep->num]->doepint);
+               dev_if->isoc_ep = NULL;
+               doepctl.d32 =
+                   DWC_READ_REG32(&dev_if->out_ep_regs[epnum]->doepctl);
+               DWC_PRINTF("Before disable DOEPCTL = %08x\n", doepctl.d32);
+               if (doepctl.b.epena) {
+                       doepctl.b.epdis = 1;
+                       doepctl.b.snak = 1;
+               }
+               DWC_WRITE_REG32(&dev_if->out_ep_regs[epnum]->doepctl,
+                               doepctl.d32);
+               return 1;
+       } else
+               DWC_PRINTF("INTERRUPT Handler not implemented for %s\n",
+                          "Global OUT NAK Effective\n");
+       
+out:
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.goutnakeff = 1;
+       DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+                       gintsts.d32);
+
+       return 1;
+}
+
+/**
+ * PCD interrupt handler.
+ *
+ * The PCD handles the device interrupts.  Many conditions can cause a
+ * device interrupt. When an interrupt occurs, the device interrupt
+ * service routine determines the cause of the interrupt and
+ * dispatches handling to the appropriate function. These interrupt
+ * handling functions are described below.
+ *
+ * All interrupt registers are processed from LSB to MSB.
+ *
+ */
+int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * pcd)
+{
+       dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+#ifdef VERBOSE
+       dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+#endif
+       gintsts_data_t gintr_status;
+       int32_t retval = 0;
+
+       /* Exit from ISR if core is hibernated */
+       if (core_if->hibernation_suspend == 1) {
+               return retval;
+       }
+#ifdef VERBOSE
+       DWC_DEBUGPL(DBG_ANY, "%s() gintsts=%08x  gintmsk=%08x\n",
+                   __func__,
+                   DWC_READ_REG32(&global_regs->gintsts),
+                   DWC_READ_REG32(&global_regs->gintmsk));
+#endif
+
+       if (dwc_otg_is_device_mode(core_if)) {
+               DWC_SPINLOCK(pcd->lock);
+#ifdef VERBOSE
+               DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%08x  gintmsk=%08x\n",
+                           __func__,
+                           DWC_READ_REG32(&global_regs->gintsts),
+                           DWC_READ_REG32(&global_regs->gintmsk));
+#endif
+
+               gintr_status.d32 = dwc_otg_read_core_intr(core_if);
+
+               DWC_DEBUGPL(DBG_PCDV, "%s: gintsts&gintmsk=%08x\n",
+                           __func__, gintr_status.d32);
+
+               if (gintr_status.b.sofintr) {
+                       retval |= dwc_otg_pcd_handle_sof_intr(pcd);
+               }
+               if (gintr_status.b.rxstsqlvl) {
+                       retval |=
+                           dwc_otg_pcd_handle_rx_status_q_level_intr(pcd);
+               }
+               if (gintr_status.b.nptxfempty) {
+                       retval |= dwc_otg_pcd_handle_np_tx_fifo_empty_intr(pcd);
+               }
+               if (gintr_status.b.goutnakeff) {
+                       retval |= dwc_otg_pcd_handle_out_nak_effective(pcd);
+               }
+               if (gintr_status.b.i2cintr) {
+                       retval |= dwc_otg_pcd_handle_i2c_intr(pcd);
+               }
+               if (gintr_status.b.erlysuspend) {
+                       retval |= dwc_otg_pcd_handle_early_suspend_intr(pcd);
+               }
+               if (gintr_status.b.usbreset) {
+                       retval |= dwc_otg_pcd_handle_usb_reset_intr(pcd);
+               }
+               if (gintr_status.b.enumdone) {
+                       retval |= dwc_otg_pcd_handle_enum_done_intr(pcd);
+               }
+               if (gintr_status.b.isooutdrop) {
+                       retval |=
+                           dwc_otg_pcd_handle_isoc_out_packet_dropped_intr
+                           (pcd);
+               }
+               if (gintr_status.b.eopframe) {
+                       retval |=
+                           dwc_otg_pcd_handle_end_periodic_frame_intr(pcd);
+               }
+               if (gintr_status.b.inepint) {
+                       if (!core_if->multiproc_int_enable) {
+                               retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
+                       }
+               }
+               if (gintr_status.b.outepintr) {
+                       if (!core_if->multiproc_int_enable) {
+                               retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
+                       }
+               }
+               if (gintr_status.b.epmismatch) {
+                       retval |= dwc_otg_pcd_handle_ep_mismatch_intr(pcd);
+               }
+               if (gintr_status.b.fetsusp) {
+                       retval |= dwc_otg_pcd_handle_ep_fetsusp_intr(pcd);
+               }
+               if (gintr_status.b.ginnakeff) {
+                       retval |= dwc_otg_pcd_handle_in_nak_effective(pcd);
+               }
+               if (gintr_status.b.incomplisoin) {
+                       retval |=
+                           dwc_otg_pcd_handle_incomplete_isoc_in_intr(pcd);
+               }
+               if (gintr_status.b.incomplisoout) {
+                       retval |=
+                           dwc_otg_pcd_handle_incomplete_isoc_out_intr(pcd);
+               }
+
+               /* In MPI mode Device Endpoints interrupts are asserted
+                * without setting outepintr and inepint bits set, so these
+                * Interrupt handlers are called without checking these bit-fields
+                */
+               if (core_if->multiproc_int_enable) {
+                       retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
+                       retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
+               }
+#ifdef VERBOSE
+               DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%0x\n", __func__,
+                           DWC_READ_REG32(&global_regs->gintsts));
+#endif
+               DWC_SPINUNLOCK(pcd->lock);
+       }
+       return retval;
+}
+
+#endif /* DWC_HOST_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c b/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c
new file mode 100644
index 0000000..a591d89
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c
@@ -0,0 +1,1358 @@
+ /* ==========================================================================
+  * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_linux.c $
+  * $Revision: #21 $
+  * $Date: 2012/08/10 $
+  * $Change: 2047372 $
+  *
+  * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+  * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+  * otherwise expressly agreed to in writing between Synopsys and you.
+  *
+  * The Software IS NOT an item of Licensed Software or Licensed Product under
+  * any End User Software License Agreement or Agreement for Licensed Product
+  * with Synopsys or any supplement thereto. You are permitted to use and
+  * redistribute this Software in source and binary forms, with or without
+  * modification, provided that redistributions of source code must retain this
+  * notice. You may not view, use, disclose, copy or distribute this file or
+  * any information contained herein except pursuant to this license grant from
+  * Synopsys. If you do not agree with this notice, including the disclaimer
+  * below, then you are not authorized to use the Software.
+  *
+  * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+  * DAMAGE.
+  * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+/** @file
+ * This file implements the Peripheral Controller Driver.
+ *
+ * The Peripheral Controller Driver (PCD) is responsible for
+ * translating requests from the Function Driver into the appropriate
+ * actions on the DWC_otg controller. It isolates the Function Driver
+ * from the specifics of the controller by providing an API to the
+ * Function Driver.
+ *
+ * The Peripheral Controller Driver for Linux will implement the
+ * Gadget API, so that the existing Gadget drivers can be used.
+ * (Gadget Driver is the Linux terminology for a Function Driver.)
+ *
+ * The Linux Gadget API is defined in the header file
+ * <code><linux/usb_gadget.h></code>.  The USB EP operations API is
+ * defined in the structure <code>usb_ep_ops</code> and the USB
+ * Controller API is defined in the structure
+ * <code>usb_gadget_ops</code>.
+ *
+ */
+
+#include "dwc_otg_os_dep.h"
+#include "dwc_otg_pcd_if.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_dbg.h"
+
+static struct gadget_wrapper {
+       dwc_otg_pcd_t *pcd;
+
+       struct usb_gadget gadget;
+       struct usb_gadget_driver *driver;
+
+       struct usb_ep ep0;
+       struct usb_ep in_ep[16];
+       struct usb_ep out_ep[16];
+
+} *gadget_wrapper;
+
+/* Display the contents of the buffer */
+extern void dump_msg(const u8 * buf, unsigned int length);
+/**
+ * Get the dwc_otg_pcd_ep_t* from usb_ep* pointer - NULL in case
+ * if the endpoint is not found
+ */
+static struct dwc_otg_pcd_ep *ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
+{
+       int i;
+       if (pcd->ep0.priv == handle) {
+               return &pcd->ep0;
+       }
+
+       for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
+               if (pcd->in_ep[i].priv == handle)
+                       return &pcd->in_ep[i];
+               if (pcd->out_ep[i].priv == handle)
+                       return &pcd->out_ep[i];
+       }
+
+       return NULL;
+}
+
+/* USB Endpoint Operations */
+/*
+ * The following sections briefly describe the behavior of the Gadget
+ * API endpoint operations implemented in the DWC_otg driver
+ * software. Detailed descriptions of the generic behavior of each of
+ * these functions can be found in the Linux header file
+ * include/linux/usb_gadget.h.
+ *
+ * The Gadget API provides wrapper functions for each of the function
+ * pointers defined in usb_ep_ops. The Gadget Driver calls the wrapper
+ * function, which then calls the underlying PCD function. The
+ * following sections are named according to the wrapper
+ * functions. Within each section, the corresponding DWC_otg PCD
+ * function name is specified.
+ *
+ */
+
+/**
+ * This function is called by the Gadget Driver for each EP to be
+ * configured for the current configuration (SET_CONFIGURATION).
+ *
+ * This function initializes the dwc_otg_ep_t data structure, and then
+ * calls dwc_otg_ep_activate.
+ */
+static int ep_enable(struct usb_ep *usb_ep,
+                    const struct usb_endpoint_descriptor *ep_desc)
+{
+       int retval;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, ep_desc);
+
+       if (!usb_ep || !ep_desc || ep_desc->bDescriptorType != USB_DT_ENDPOINT) {
+               DWC_WARN("%s, bad ep or descriptor\n", __func__);
+               return -EINVAL;
+       }
+       if (usb_ep == &gadget_wrapper->ep0) {
+               DWC_WARN("%s, bad ep(0)\n", __func__);
+               return -EINVAL;
+       }
+
+       /* Check FIFO size? */
+       if (!ep_desc->wMaxPacketSize) {
+               DWC_WARN("%s, bad %s maxpacket\n", __func__, usb_ep->name);
+               return -ERANGE;
+       }
+
+       if (!gadget_wrapper->driver ||
+           gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+               DWC_WARN("%s, bogus device state\n", __func__);
+               return -ESHUTDOWN;
+       }
+
+       /* Delete after check - MAS */
+#if 0
+       nat = (uint32_t) ep_desc->wMaxPacketSize;
+       printk(KERN_ALERT "%s: nat (before) =%d\n", __func__, nat);
+       nat = (nat >> 11) & 0x03;
+       printk(KERN_ALERT "%s: nat (after) =%d\n", __func__, nat);
+#endif
+       retval = dwc_otg_pcd_ep_enable(gadget_wrapper->pcd,
+                                      (const uint8_t *)ep_desc,
+                                      (void *)usb_ep);
+       if (retval) {
+               DWC_WARN("dwc_otg_pcd_ep_enable failed\n");
+               return -EINVAL;
+       }
+
+       usb_ep->maxpacket = le16_to_cpu(ep_desc->wMaxPacketSize);
+
+       return 0;
+}
+
+/**
+ * This function is called when an EP is disabled due to disconnect or
+ * change in configuration. Any pending requests will terminate with a
+ * status of -ESHUTDOWN.
+ *
+ * This function modifies the dwc_otg_ep_t data structure for this EP,
+ * and then calls dwc_otg_ep_deactivate.
+ */
+static int ep_disable(struct usb_ep *usb_ep)
+{
+       int retval;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, usb_ep);
+       if (!usb_ep) {
+               DWC_DEBUGPL(DBG_PCD, "%s, %s not enabled\n", __func__,
+                           usb_ep ? usb_ep->name : NULL);
+               return -EINVAL;
+       }
+
+       retval = dwc_otg_pcd_ep_disable(gadget_wrapper->pcd, usb_ep);
+       if (retval) {
+               retval = -EINVAL;
+       }
+
+       return retval;
+}
+
+/**
+ * This function allocates a request object to use with the specified
+ * endpoint.
+ *
+ * @param ep The endpoint to be used with with the request
+ * @param gfp_flags the GFP_* flags to use.
+ */
+static struct usb_request *dwc_otg_pcd_alloc_request(struct usb_ep *ep,
+                                                    gfp_t gfp_flags)
+{
+       struct usb_request *usb_req;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d)\n", __func__, ep, gfp_flags);
+       if (0 == ep) {
+               DWC_WARN("%s() %s\n", __func__, "Invalid EP!\n");
+               return 0;
+       }
+       usb_req = kmalloc(sizeof(*usb_req), gfp_flags);
+       if (0 == usb_req) {
+               DWC_WARN("%s() %s\n", __func__, "request allocation failed!\n");
+               return 0;
+       }
+       memset(usb_req, 0, sizeof(*usb_req));
+       usb_req->dma = DWC_DMA_ADDR_INVALID;
+
+       return usb_req;
+}
+
+/**
+ * This function frees a request object.
+ *
+ * @param ep The endpoint associated with the request
+ * @param req The request being freed
+ */
+static void dwc_otg_pcd_free_request(struct usb_ep *ep, struct usb_request *req)
+{
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, ep, req);
+
+       if (0 == ep || 0 == req) {
+               DWC_WARN("%s() %s\n", __func__,
+                        "Invalid ep or req argument!\n");
+               return;
+       }
+
+       kfree(req);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+/**
+ * This function allocates an I/O buffer to be used for a transfer
+ * to/from the specified endpoint.
+ *
+ * @param usb_ep The endpoint to be used with with the request
+ * @param bytes The desired number of bytes for the buffer
+ * @param dma Pointer to the buffer's DMA address; must be valid
+ * @param gfp_flags the GFP_* flags to use.
+ * @return address of a new buffer or null is buffer could not be allocated.
+ */
+static void *dwc_otg_pcd_alloc_buffer(struct usb_ep *usb_ep, unsigned bytes,
+                                     dma_addr_t * dma, gfp_t gfp_flags)
+{
+       void *buf;
+       dwc_otg_pcd_t *pcd = 0;
+
+       pcd = gadget_wrapper->pcd;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d,%p,%0x)\n", __func__, usb_ep, bytes,
+                   dma, gfp_flags);
+
+       /* Check dword alignment */
+       if ((bytes & 0x3UL) != 0) {
+               DWC_WARN("%s() Buffer size is not a multiple of"
+                        "DWORD size (%d)", __func__, bytes);
+       }
+
+       buf = dma_alloc_coherent(NULL, bytes, dma, gfp_flags);
+
+       /* Check dword alignment */
+       if (((int)buf & 0x3UL) != 0) {
+               DWC_WARN("%s() Buffer is not DWORD aligned (%p)",
+                        __func__, buf);
+       }
+
+       return buf;
+}
+
+/**
+ * This function frees an I/O buffer that was allocated by alloc_buffer.
+ *
+ * @param usb_ep the endpoint associated with the buffer
+ * @param buf address of the buffer
+ * @param dma The buffer's DMA address
+ * @param bytes The number of bytes of the buffer
+ */
+static void dwc_otg_pcd_free_buffer(struct usb_ep *usb_ep, void *buf,
+                                   dma_addr_t dma, unsigned bytes)
+{
+       dwc_otg_pcd_t *pcd = 0;
+
+       pcd = gadget_wrapper->pcd;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%0x,%d)\n", __func__, buf, dma, bytes);
+
+       dma_free_coherent(NULL, bytes, buf, dma);
+}
+#endif
+
+/**
+ * This function is used to submit an I/O Request to an EP.
+ *
+ *     - When the request completes the request's completion callback
+ *       is called to return the request to the driver.
+ *     - An EP, except control EPs, may have multiple requests
+ *       pending.
+ *     - Once submitted the request cannot be examined or modified.
+ *     - Each request is turned into one or more packets.
+ *     - A BULK EP can queue any amount of data; the transfer is
+ *       packetized.
+ *     - Zero length Packets are specified with the request 'zero'
+ *       flag.
+ */
+static int ep_queue(struct usb_ep *usb_ep, struct usb_request *usb_req,
+                   gfp_t gfp_flags)
+{
+       dwc_otg_pcd_t *pcd;
+       struct dwc_otg_pcd_ep *ep = NULL;
+       int retval = 0, is_isoc_ep = 0;
+       dma_addr_t dma_addr = DWC_DMA_ADDR_INVALID;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p,%d)\n",
+                   __func__, usb_ep, usb_req, gfp_flags);
+
+       if (!usb_req || !usb_req->complete || !usb_req->buf) {
+               DWC_WARN("bad params\n");
+               return -EINVAL;
+       }
+
+       if (!usb_ep) {
+               DWC_WARN("bad ep\n");
+               return -EINVAL;
+       }
+
+       pcd = gadget_wrapper->pcd;
+       if (!gadget_wrapper->driver ||
+           gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+               DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
+                           gadget_wrapper->gadget.speed);
+               DWC_WARN("bogus device state\n");
+               return -ESHUTDOWN;
+       }
+
+       DWC_DEBUGPL(DBG_PCD, "%s queue req %p, len %d buf %p\n",
+                   usb_ep->name, usb_req, usb_req->length, usb_req->buf);
+
+       usb_req->status = -EINPROGRESS;
+       usb_req->actual = 0;
+
+       ep = ep_from_handle(pcd, usb_ep);
+       if (ep == NULL)
+               is_isoc_ep = 0;
+       else
+               is_isoc_ep = (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) ? 1 : 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+       dma_addr = usb_req->dma;
+#else
+       if (GET_CORE_IF(pcd)->dma_enable) {
+                dwc_otg_device_t *otg_dev = gadget_wrapper->pcd->otg_dev;
+                struct device *dev = NULL;
+                
+                if (otg_dev != NULL)
+                        dev = DWC_OTG_OS_GETDEV(otg_dev->os_dep);
+                
+               if (usb_req->length != 0 &&
+                    usb_req->dma == DWC_DMA_ADDR_INVALID) {
+                        dma_addr = dma_map_single(dev, usb_req->buf,
+                                                  usb_req->length, 
+                                                  ep->dwc_ep.is_in ?
+                                                        DMA_TO_DEVICE:
+                                                        DMA_FROM_DEVICE);
+               }
+       }
+#endif
+
+#ifdef DWC_UTE_PER_IO
+       if (is_isoc_ep == 1) {
+               retval = dwc_otg_pcd_xiso_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
+                       usb_req->length, usb_req->zero, usb_req,
+                       gfp_flags == GFP_ATOMIC ? 1 : 0, &usb_req->ext_req);
+               if (retval)
+                       return -EINVAL;
+
+               return 0;
+       }
+#endif
+       retval = dwc_otg_pcd_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
+                                     usb_req->length, usb_req->zero, usb_req,
+                                     gfp_flags == GFP_ATOMIC ? 1 : 0);
+       if (retval) {
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/**
+ * This function cancels an I/O request from an EP.
+ */
+static int ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
+{
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, usb_req);
+
+       if (!usb_ep || !usb_req) {
+               DWC_WARN("bad argument\n");
+               return -EINVAL;
+       }
+       if (!gadget_wrapper->driver ||
+           gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+               DWC_WARN("bogus device state\n");
+               return -ESHUTDOWN;
+       }
+       if (dwc_otg_pcd_ep_dequeue(gadget_wrapper->pcd, usb_ep, usb_req)) {
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/**
+ * usb_ep_set_halt stalls an endpoint.
+ *
+ * usb_ep_clear_halt clears an endpoint halt and resets its data
+ * toggle.
+ *
+ * Both of these functions are implemented with the same underlying
+ * function. The behavior depends on the value argument.
+ *
+ * @param[in] usb_ep the Endpoint to halt or clear halt.
+ * @param[in] value
+ *     - 0 means clear_halt.
+ *     - 1 means set_halt,
+ *     - 2 means clear stall lock flag.
+ *     - 3 means set  stall lock flag.
+ */
+static int ep_halt(struct usb_ep *usb_ep, int value)
+{
+       int retval = 0;
+
+       DWC_DEBUGPL(DBG_PCD, "HALT %s %d\n", usb_ep->name, value);
+
+       if (!usb_ep) {
+               DWC_WARN("bad ep\n");
+               return -EINVAL;
+       }
+
+       retval = dwc_otg_pcd_ep_halt(gadget_wrapper->pcd, usb_ep, value);
+       if (retval == -DWC_E_AGAIN) {
+               return -EAGAIN;
+       } else if (retval) {
+               retval = -EINVAL;
+       }
+
+       return retval;
+}
+
+//#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30))
+#if 0
+/**
+ * ep_wedge: sets the halt feature and ignores clear requests
+ *
+ * @usb_ep: the endpoint being wedged
+ *
+ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
+ * requests. If the gadget driver clears the halt status, it will
+ * automatically unwedge the endpoint.
+ *
+ * Returns zero on success, else negative errno. *
+ * Check usb_ep_set_wedge() at "usb_gadget.h" for details
+ */
+static int ep_wedge(struct usb_ep *usb_ep)
+{
+       int retval = 0;
+
+       DWC_DEBUGPL(DBG_PCD, "WEDGE %s\n", usb_ep->name);
+
+       if (!usb_ep) {
+               DWC_WARN("bad ep\n");
+               return -EINVAL;
+       }
+
+       retval = dwc_otg_pcd_ep_wedge(gadget_wrapper->pcd, usb_ep);
+       if (retval == -DWC_E_AGAIN) {
+               retval = -EAGAIN;
+       } else if (retval) {
+               retval = -EINVAL;
+       }
+
+       return retval;
+}
+#endif
+
+#ifdef DWC_EN_ISOC
+/**
+ * This function is used to submit an ISOC Transfer Request to an EP.
+ *
+ *     - Every time a sync period completes the request's completion callback
+ *       is called to provide data to the gadget driver.
+ *     - Once submitted the request cannot be modified.
+ *     - Each request is turned into periodic data packets untill ISO
+ *       Transfer is stopped..
+ */
+static int iso_ep_start(struct usb_ep *usb_ep, struct usb_iso_request *req,
+                       gfp_t gfp_flags)
+{
+       int retval = 0;
+
+       if (!req || !req->process_buffer || !req->buf0 || !req->buf1) {
+               DWC_WARN("bad params\n");
+               return -EINVAL;
+       }
+
+       if (!usb_ep) {
+               DWC_PRINTF("bad params\n");
+               return -EINVAL;
+       }
+
+       req->status = -EINPROGRESS;
+
+       retval =
+           dwc_otg_pcd_iso_ep_start(gadget_wrapper->pcd, usb_ep, req->buf0,
+                                    req->buf1, req->dma0, req->dma1,
+                                    req->sync_frame, req->data_pattern_frame,
+                                    req->data_per_frame,
+                                    req->
+                                    flags & USB_REQ_ISO_ASAP ? -1 :
+                                    req->start_frame, req->buf_proc_intrvl,
+                                    req, gfp_flags == GFP_ATOMIC ? 1 : 0);
+
+       if (retval) {
+               return -EINVAL;
+       }
+
+       return retval;
+}
+
+/**
+ * This function stops ISO EP Periodic Data Transfer.
+ */
+static int iso_ep_stop(struct usb_ep *usb_ep, struct usb_iso_request *req)
+{
+       int retval = 0;
+       if (!usb_ep) {
+               DWC_WARN("bad ep\n");
+       }
+
+       if (!gadget_wrapper->driver ||
+           gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+               DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
+                           gadget_wrapper->gadget.speed);
+               DWC_WARN("bogus device state\n");
+       }
+
+       dwc_otg_pcd_iso_ep_stop(gadget_wrapper->pcd, usb_ep, req);
+       if (retval) {
+               retval = -EINVAL;
+       }
+
+       return retval;
+}
+
+static struct usb_iso_request *alloc_iso_request(struct usb_ep *ep,
+                                                int packets, gfp_t gfp_flags)
+{
+       struct usb_iso_request *pReq = NULL;
+       uint32_t req_size;
+
+       req_size = sizeof(struct usb_iso_request);
+       req_size +=
+           (2 * packets * (sizeof(struct usb_gadget_iso_packet_descriptor)));
+
+       pReq = kmalloc(req_size, gfp_flags);
+       if (!pReq) {
+               DWC_WARN("Can't allocate Iso Request\n");
+               return 0;
+       }
+       pReq->iso_packet_desc0 = (void *)(pReq + 1);
+
+       pReq->iso_packet_desc1 = pReq->iso_packet_desc0 + packets;
+
+       return pReq;
+}
+
+static void free_iso_request(struct usb_ep *ep, struct usb_iso_request *req)
+{
+       kfree(req);
+}
+
+static struct usb_isoc_ep_ops dwc_otg_pcd_ep_ops = {
+       .ep_ops = {
+                  .enable = ep_enable,
+                  .disable = ep_disable,
+
+                  .alloc_request = dwc_otg_pcd_alloc_request,
+                  .free_request = dwc_otg_pcd_free_request,
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+                  .alloc_buffer = dwc_otg_pcd_alloc_buffer,
+                  .free_buffer = dwc_otg_pcd_free_buffer,
+#endif
+
+                  .queue = ep_queue,
+                  .dequeue = ep_dequeue,
+
+                  .set_halt = ep_halt,
+                  .fifo_status = 0,
+                  .fifo_flush = 0,
+                  },
+       .iso_ep_start = iso_ep_start,
+       .iso_ep_stop = iso_ep_stop,
+       .alloc_iso_request = alloc_iso_request,
+       .free_iso_request = free_iso_request,
+};
+
+#else
+
+       int (*enable) (struct usb_ep *ep,
+               const struct usb_endpoint_descriptor *desc);
+       int (*disable) (struct usb_ep *ep);
+
+       struct usb_request *(*alloc_request) (struct usb_ep *ep,
+               gfp_t gfp_flags);
+       void (*free_request) (struct usb_ep *ep, struct usb_request *req);
+
+       int (*queue) (struct usb_ep *ep, struct usb_request *req,
+               gfp_t gfp_flags);
+       int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
+
+       int (*set_halt) (struct usb_ep *ep, int value);
+       int (*set_wedge) (struct usb_ep *ep);
+
+       int (*fifo_status) (struct usb_ep *ep);
+       void (*fifo_flush) (struct usb_ep *ep);
+static struct usb_ep_ops dwc_otg_pcd_ep_ops = {
+       .enable = ep_enable,
+       .disable = ep_disable,
+
+       .alloc_request = dwc_otg_pcd_alloc_request,
+       .free_request = dwc_otg_pcd_free_request,
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+       .alloc_buffer = dwc_otg_pcd_alloc_buffer,
+       .free_buffer = dwc_otg_pcd_free_buffer,
+#else
+       /* .set_wedge = ep_wedge, */
+        .set_wedge = NULL, /* uses set_halt instead */
+#endif
+        
+       .queue = ep_queue,
+       .dequeue = ep_dequeue,
+
+       .set_halt = ep_halt,
+       .fifo_status = 0,
+       .fifo_flush = 0,
+
+};
+
+#endif /* _EN_ISOC_ */
+/*     Gadget Operations */
+/**
+ * The following gadget operations will be implemented in the DWC_otg
+ * PCD. Functions in the API that are not described below are not
+ * implemented.
+ *
+ * The Gadget API provides wrapper functions for each of the function
+ * pointers defined in usb_gadget_ops. The Gadget Driver calls the
+ * wrapper function, which then calls the underlying PCD function. The
+ * following sections are named according to the wrapper functions
+ * (except for ioctl, which doesn't have a wrapper function). Within
+ * each section, the corresponding DWC_otg PCD function name is
+ * specified.
+ *
+ */
+
+/**
+ *Gets the USB Frame number of the last SOF.
+ */
+static int get_frame_number(struct usb_gadget *gadget)
+{
+       struct gadget_wrapper *d;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
+
+       if (gadget == 0) {
+               return -ENODEV;
+       }
+
+       d = container_of(gadget, struct gadget_wrapper, gadget);
+       return dwc_otg_pcd_get_frame_number(d->pcd);
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+static int test_lpm_enabled(struct usb_gadget *gadget)
+{
+       struct gadget_wrapper *d;
+
+       d = container_of(gadget, struct gadget_wrapper, gadget);
+
+       return dwc_otg_pcd_is_lpm_enabled(d->pcd);
+}
+#endif
+
+/**
+ * Initiates Session Request Protocol (SRP) to wakeup the host if no
+ * session is in progress. If a session is already in progress, but
+ * the device is suspended, remote wakeup signaling is started.
+ *
+ */
+static int wakeup(struct usb_gadget *gadget)
+{
+       struct gadget_wrapper *d;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
+
+       if (gadget == 0) {
+               return -ENODEV;
+       } else {
+               d = container_of(gadget, struct gadget_wrapper, gadget);
+       }
+       dwc_otg_pcd_wakeup(d->pcd);
+       return 0;
+}
+
+static const struct usb_gadget_ops dwc_otg_pcd_ops = {
+       .get_frame = get_frame_number,
+       .wakeup = wakeup,
+#ifdef CONFIG_USB_DWC_OTG_LPM
+       .lpm_support = test_lpm_enabled,
+#endif
+       // current versions must always be self-powered
+};
+
+static int _setup(dwc_otg_pcd_t * pcd, uint8_t * bytes)
+{
+       int retval = -DWC_E_NOT_SUPPORTED;
+       if (gadget_wrapper->driver && gadget_wrapper->driver->setup) {
+               retval = gadget_wrapper->driver->setup(&gadget_wrapper->gadget,
+                                                      (struct usb_ctrlrequest
+                                                       *)bytes);
+       }
+
+       if (retval == -ENOTSUPP) {
+               retval = -DWC_E_NOT_SUPPORTED;
+       } else if (retval < 0) {
+               retval = -DWC_E_INVALID;
+       }
+
+       return retval;
+}
+
+#ifdef DWC_EN_ISOC
+static int _isoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
+                         void *req_handle, int proc_buf_num)
+{
+       int i, packet_count;
+       struct usb_gadget_iso_packet_descriptor *iso_packet = 0;
+       struct usb_iso_request *iso_req = req_handle;
+
+       if (proc_buf_num) {
+               iso_packet = iso_req->iso_packet_desc1;
+       } else {
+               iso_packet = iso_req->iso_packet_desc0;
+       }
+       packet_count =
+           dwc_otg_pcd_get_iso_packet_count(pcd, ep_handle, req_handle);
+       for (i = 0; i < packet_count; ++i) {
+               int status;
+               int actual;
+               int offset;
+               dwc_otg_pcd_get_iso_packet_params(pcd, ep_handle, req_handle,
+                                                 i, &status, &actual, &offset);
+               switch (status) {
+               case -DWC_E_NO_DATA:
+                       status = -ENODATA;
+                       break;
+               default:
+                       if (status) {
+                               DWC_PRINTF("unknown status in isoc packet\n");
+                       }
+
+               }
+               iso_packet[i].status = status;
+               iso_packet[i].offset = offset;
+               iso_packet[i].actual_length = actual;
+       }
+
+       iso_req->status = 0;
+       iso_req->process_buffer(ep_handle, iso_req);
+
+       return 0;
+}
+#endif /* DWC_EN_ISOC */
+
+#ifdef DWC_UTE_PER_IO
+/**
+ * Copy the contents of the extended request to the Linux usb_request's
+ * extended part and call the gadget's completion.
+ *
+ * @param pcd                  Pointer to the pcd structure
+ * @param ep_handle            Void pointer to the usb_ep structure
+ * @param req_handle   Void pointer to the usb_request structure
+ * @param status               Request status returned from the portable logic
+ * @param ereq_port            Void pointer to the extended request structure
+ *                                             created in the the portable part that contains the
+ *                                             results of the processed iso packets.
+ */
+static int _xisoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
+                          void *req_handle, int32_t status, void *ereq_port)
+{
+       struct dwc_ute_iso_req_ext *ereqorg = NULL;
+       struct dwc_iso_xreq_port *ereqport = NULL;
+       struct dwc_ute_iso_packet_descriptor *desc_org = NULL;
+       int i;
+       struct usb_request *req;
+       //struct dwc_ute_iso_packet_descriptor *
+       //int status = 0;
+
+       req = (struct usb_request *)req_handle;
+       ereqorg = &req->ext_req;
+       ereqport = (struct dwc_iso_xreq_port *)ereq_port;
+       desc_org = ereqorg->per_io_frame_descs;
+
+       if (req && req->complete) {
+               /* Copy the request data from the portable logic to our request */
+               for (i = 0; i < ereqport->pio_pkt_count; i++) {
+                       desc_org[i].actual_length =
+                           ereqport->per_io_frame_descs[i].actual_length;
+                       desc_org[i].status =
+                           ereqport->per_io_frame_descs[i].status;
+               }
+
+               switch (status) {
+               case -DWC_E_SHUTDOWN:
+                       req->status = -ESHUTDOWN;
+                       break;
+               case -DWC_E_RESTART:
+                       req->status = -ECONNRESET;
+                       break;
+               case -DWC_E_INVALID:
+                       req->status = -EINVAL;
+                       break;
+               case -DWC_E_TIMEOUT:
+                       req->status = -ETIMEDOUT;
+                       break;
+               default:
+                       req->status = status;
+               }
+
+               /* And call the gadget's completion */
+               req->complete(ep_handle, req);
+       }
+
+       return 0;
+}
+#endif /* DWC_UTE_PER_IO */
+
+static int _complete(dwc_otg_pcd_t * pcd, void *ep_handle,
+                    void *req_handle, int32_t status, uint32_t actual)
+{
+       struct usb_request *req = (struct usb_request *)req_handle;
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
+       struct dwc_otg_pcd_ep *ep = NULL;
+#endif
+
+       if (req && req->complete) {
+               switch (status) {
+               case -DWC_E_SHUTDOWN:
+                       req->status = -ESHUTDOWN;
+                       break;
+               case -DWC_E_RESTART:
+                       req->status = -ECONNRESET;
+                       break;
+               case -DWC_E_INVALID:
+                       req->status = -EINVAL;
+                       break;
+               case -DWC_E_TIMEOUT:
+                       req->status = -ETIMEDOUT;
+                       break;
+               default:
+                       req->status = status;
+
+               }
+
+               req->actual = actual;
+               DWC_SPINUNLOCK(pcd->lock);
+               req->complete(ep_handle, req);
+               DWC_SPINLOCK(pcd->lock);
+       }
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
+       ep = ep_from_handle(pcd, ep_handle);
+       if (GET_CORE_IF(pcd)->dma_enable) {
+                if (req->length != 0) {
+                        dwc_otg_device_t *otg_dev = gadget_wrapper->pcd->otg_dev;
+                        struct device *dev = NULL;
+
+                        if (otg_dev != NULL)
+                                  dev = DWC_OTG_OS_GETDEV(otg_dev->os_dep);
+
+                       dma_unmap_single(dev, req->dma, req->length,
+                                         ep->dwc_ep.is_in ?
+                                                DMA_TO_DEVICE: DMA_FROM_DEVICE);
+                }
+       }
+#endif
+
+       return 0;
+}
+
+static int _connect(dwc_otg_pcd_t * pcd, int speed)
+{
+       gadget_wrapper->gadget.speed = speed;
+       return 0;
+}
+
+static int _disconnect(dwc_otg_pcd_t * pcd)
+{
+       if (gadget_wrapper->driver && gadget_wrapper->driver->disconnect) {
+               gadget_wrapper->driver->disconnect(&gadget_wrapper->gadget);
+       }
+       return 0;
+}
+
+static int _resume(dwc_otg_pcd_t * pcd)
+{
+       if (gadget_wrapper->driver && gadget_wrapper->driver->resume) {
+               gadget_wrapper->driver->resume(&gadget_wrapper->gadget);
+       }
+
+       return 0;
+}
+
+static int _suspend(dwc_otg_pcd_t * pcd)
+{
+       if (gadget_wrapper->driver && gadget_wrapper->driver->suspend) {
+               gadget_wrapper->driver->suspend(&gadget_wrapper->gadget);
+       }
+       return 0;
+}
+
+/**
+ * This function updates the otg values in the gadget structure.
+ */
+static int _hnp_changed(dwc_otg_pcd_t * pcd)
+{
+
+       if (!gadget_wrapper->gadget.is_otg)
+               return 0;
+
+       gadget_wrapper->gadget.b_hnp_enable = get_b_hnp_enable(pcd);
+       gadget_wrapper->gadget.a_hnp_support = get_a_hnp_support(pcd);
+       gadget_wrapper->gadget.a_alt_hnp_support = get_a_alt_hnp_support(pcd);
+       return 0;
+}
+
+static int _reset(dwc_otg_pcd_t * pcd)
+{
+       return 0;
+}
+
+#ifdef DWC_UTE_CFI
+static int _cfi_setup(dwc_otg_pcd_t * pcd, void *cfi_req)
+{
+       int retval = -DWC_E_INVALID;
+       if (gadget_wrapper->driver->cfi_feature_setup) {
+               retval =
+                   gadget_wrapper->driver->
+                   cfi_feature_setup(&gadget_wrapper->gadget,
+                                     (struct cfi_usb_ctrlrequest *)cfi_req);
+       }
+
+       return retval;
+}
+#endif
+
+static const struct dwc_otg_pcd_function_ops fops = {
+       .complete = _complete,
+#ifdef DWC_EN_ISOC
+       .isoc_complete = _isoc_complete,
+#endif
+       .setup = _setup,
+       .disconnect = _disconnect,
+       .connect = _connect,
+       .resume = _resume,
+       .suspend = _suspend,
+       .hnp_changed = _hnp_changed,
+       .reset = _reset,
+#ifdef DWC_UTE_CFI
+       .cfi_setup = _cfi_setup,
+#endif
+#ifdef DWC_UTE_PER_IO
+       .xisoc_complete = _xisoc_complete,
+#endif
+};
+
+/**
+ * This function is the top level PCD interrupt handler.
+ */
+static irqreturn_t dwc_otg_pcd_irq(int irq, void *dev)
+{
+       dwc_otg_pcd_t *pcd = dev;
+       int32_t retval = IRQ_NONE;
+
+       retval = dwc_otg_pcd_handle_intr(pcd);
+       if (retval != 0) {
+               S3C2410X_CLEAR_EINTPEND();
+       }
+       return IRQ_RETVAL(retval);
+}
+
+/**
+ * This function initialized the usb_ep structures to there default
+ * state.
+ *
+ * @param d Pointer on gadget_wrapper.
+ */
+void gadget_add_eps(struct gadget_wrapper *d)
+{
+       static const char *names[] = {
+
+               "ep0",
+               "ep1in",
+               "ep2in",
+               "ep3in",
+               "ep4in",
+               "ep5in",
+               "ep6in",
+               "ep7in",
+               "ep8in",
+               "ep9in",
+               "ep10in",
+               "ep11in",
+               "ep12in",
+               "ep13in",
+               "ep14in",
+               "ep15in",
+               "ep1out",
+               "ep2out",
+               "ep3out",
+               "ep4out",
+               "ep5out",
+               "ep6out",
+               "ep7out",
+               "ep8out",
+               "ep9out",
+               "ep10out",
+               "ep11out",
+               "ep12out",
+               "ep13out",
+               "ep14out",
+               "ep15out"
+       };
+
+       int i;
+       struct usb_ep *ep;
+       int8_t dev_endpoints;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s\n", __func__);
+
+       INIT_LIST_HEAD(&d->gadget.ep_list);
+       d->gadget.ep0 = &d->ep0;
+       d->gadget.speed = USB_SPEED_UNKNOWN;
+
+       INIT_LIST_HEAD(&d->gadget.ep0->ep_list);
+
+       /**
+        * Initialize the EP0 structure.
+        */
+       ep = &d->ep0;
+
+       /* Init the usb_ep structure. */
+       ep->name = names[0];
+       ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
+
+       /**
+        * @todo NGS: What should the max packet size be set to
+        * here?  Before EP type is set?
+        */
+       ep->maxpacket = MAX_PACKET_SIZE;
+       dwc_otg_pcd_ep_enable(d->pcd, NULL, ep);
+
+       list_add_tail(&ep->ep_list, &d->gadget.ep_list);
+
+       /**
+        * Initialize the EP structures.
+        */
+       dev_endpoints = d->pcd->core_if->dev_if->num_in_eps;
+
+       for (i = 0; i < dev_endpoints; i++) {
+               ep = &d->in_ep[i];
+
+               /* Init the usb_ep structure. */
+               ep->name = names[d->pcd->in_ep[i].dwc_ep.num];
+               ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
+
+               /**
+                * @todo NGS: What should the max packet size be set to
+                * here?  Before EP type is set?
+                */
+               ep->maxpacket = MAX_PACKET_SIZE;
+               list_add_tail(&ep->ep_list, &d->gadget.ep_list);
+       }
+
+       dev_endpoints = d->pcd->core_if->dev_if->num_out_eps;
+
+       for (i = 0; i < dev_endpoints; i++) {
+               ep = &d->out_ep[i];
+
+               /* Init the usb_ep structure. */
+               ep->name = names[15 + d->pcd->out_ep[i].dwc_ep.num];
+               ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
+
+               /**
+                * @todo NGS: What should the max packet size be set to
+                * here?  Before EP type is set?
+                */
+               ep->maxpacket = MAX_PACKET_SIZE;
+
+               list_add_tail(&ep->ep_list, &d->gadget.ep_list);
+       }
+
+       /* remove ep0 from the list.  There is a ep0 pointer. */
+       list_del_init(&d->ep0.ep_list);
+
+       d->ep0.maxpacket = MAX_EP0_SIZE;
+}
+
+/**
+ * This function releases the Gadget device.
+ * required by device_unregister().
+ *
+ * @todo Should this do something?     Should it free the PCD?
+ */
+static void dwc_otg_pcd_gadget_release(struct device *dev)
+{
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, dev);
+}
+
+static struct gadget_wrapper *alloc_wrapper(dwc_bus_dev_t *_dev)
+{
+       static char pcd_name[] = "dwc_otg_pcd";
+       dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+       struct gadget_wrapper *d;
+       int retval;
+
+       d = DWC_ALLOC(sizeof(*d));
+       if (d == NULL) {
+               return NULL;
+       }
+
+       memset(d, 0, sizeof(*d));
+
+       d->gadget.name = pcd_name;
+       d->pcd = otg_dev->pcd;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+       strcpy(d->gadget.dev.bus_id, "gadget");
+#else
+       dev_set_name(&d->gadget.dev, "%s", "gadget");
+#endif
+
+       d->gadget.dev.parent = &_dev->dev;
+       d->gadget.dev.release = dwc_otg_pcd_gadget_release;
+       d->gadget.ops = &dwc_otg_pcd_ops;
+       d->gadget.max_speed = dwc_otg_pcd_is_dualspeed(otg_dev->pcd) ? USB_SPEED_HIGH:USB_SPEED_FULL;
+       d->gadget.is_otg = dwc_otg_pcd_is_otg(otg_dev->pcd);
+
+       d->driver = 0;
+       /* Register the gadget device */
+       retval = device_register(&d->gadget.dev);
+       if (retval != 0) {
+               DWC_ERROR("device_register failed\n");
+               DWC_FREE(d);
+               return NULL;
+       }
+
+       return d;
+}
+
+static void free_wrapper(struct gadget_wrapper *d)
+{
+       if (d->driver) {
+               /* should have been done already by driver model core */
+               DWC_WARN("driver '%s' is still registered\n",
+                        d->driver->driver.name);
+               usb_gadget_unregister_driver(d->driver);
+       }
+
+       device_unregister(&d->gadget.dev);
+       DWC_FREE(d);
+}
+
+/**
+ * This function initialized the PCD portion of the driver.
+ *
+ */
+int pcd_init(dwc_bus_dev_t *_dev)
+{
+       dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+       int retval = 0;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p) otg_dev=%p\n", __func__, _dev, otg_dev);
+
+       otg_dev->pcd = dwc_otg_pcd_init(otg_dev->core_if);
+
+       if (!otg_dev->pcd) {
+               DWC_ERROR("dwc_otg_pcd_init failed\n");
+               return -ENOMEM;
+       }
+
+       otg_dev->pcd->otg_dev = otg_dev;
+       gadget_wrapper = alloc_wrapper(_dev);
+
+       /*
+        * Initialize EP structures
+        */
+       gadget_add_eps(gadget_wrapper);
+       /*
+        * Setup interupt handler
+        */
+#ifdef PLATFORM_INTERFACE
+       DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n",
+                    platform_get_irq(_dev, 0));
+       retval = request_irq(platform_get_irq(_dev, 0), dwc_otg_pcd_irq,
+                            IRQF_SHARED, gadget_wrapper->gadget.name,
+                            otg_dev->pcd);
+       if (retval != 0) {
+               DWC_ERROR("request of irq%d failed\n",
+                          platform_get_irq(_dev, 0));
+               free_wrapper(gadget_wrapper);
+               return -EBUSY;
+       }
+#else
+       DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n",
+                    _dev->irq);
+       retval = request_irq(_dev->irq, dwc_otg_pcd_irq,
+                            IRQF_SHARED | IRQF_DISABLED,
+                            gadget_wrapper->gadget.name, otg_dev->pcd);
+       if (retval != 0) {
+               DWC_ERROR("request of irq%d failed\n", _dev->irq);
+               free_wrapper(gadget_wrapper);
+               return -EBUSY;
+       }
+#endif
+
+       dwc_otg_pcd_start(gadget_wrapper->pcd, &fops);
+
+       return retval;
+}
+
+/**
+ * Cleanup the PCD.
+ */
+void pcd_remove(dwc_bus_dev_t *_dev)
+{
+       dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+       dwc_otg_pcd_t *pcd = otg_dev->pcd;
+
+       DWC_DEBUGPL(DBG_PCDV, "%s(%p) otg_dev %p\n", __func__, _dev, otg_dev);
+
+       /*
+        * Free the IRQ
+        */
+#ifdef PLATFORM_INTERFACE
+       free_irq(platform_get_irq(_dev, 0), pcd);
+#else
+       free_irq(_dev->irq, pcd);
+#endif
+       dwc_otg_pcd_remove(otg_dev->pcd);
+       free_wrapper(gadget_wrapper);
+       otg_dev->pcd = 0;
+}
+
+/**
+ * This function registers a gadget driver with the PCD.
+ *
+ * When a driver is successfully registered, it will receive control
+ * requests including set_configuration(), which enables non-control
+ * requests.  then usb traffic follows until a disconnect is reported.
+ * then a host may connect again, or the driver might get unbound.
+ *
+ * @param driver The driver being registered
+ * @param bind The bind function of gadget driver
+ */
+
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver)
+{
+       int retval;
+
+       DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n",
+                   driver->driver.name);
+
+       if (!driver || driver->max_speed == USB_SPEED_UNKNOWN ||
+           !driver->bind ||
+           !driver->unbind || !driver->disconnect || !driver->setup) {
+               DWC_DEBUGPL(DBG_PCDV, "EINVAL\n");
+               return -EINVAL;
+       }
+       if (gadget_wrapper == 0) {
+               DWC_DEBUGPL(DBG_PCDV, "ENODEV\n");
+               return -ENODEV;
+       }
+       if (gadget_wrapper->driver != 0) {
+               DWC_DEBUGPL(DBG_PCDV, "EBUSY (%p)\n", gadget_wrapper->driver);
+               return -EBUSY;
+       }
+
+       /* hook up the driver */
+       gadget_wrapper->driver = driver;
+       gadget_wrapper->gadget.dev.driver = &driver->driver;
+
+       DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
+       retval = driver->bind(&gadget_wrapper->gadget, gadget_wrapper->driver);
+       if (retval) {
+               DWC_ERROR("bind to driver %s --> error %d\n",
+                         driver->driver.name, retval);
+               gadget_wrapper->driver = 0;
+               gadget_wrapper->gadget.dev.driver = 0;
+               return retval;
+       }
+       DWC_DEBUGPL(DBG_ANY, "registered gadget driver '%s'\n",
+                   driver->driver.name);
+       return 0;
+}
+EXPORT_SYMBOL(usb_gadget_probe_driver);
+
+/**
+ * This function unregisters a gadget driver
+ *
+ * @param driver The driver being unregistered
+ */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+       //DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, _driver);
+
+       if (gadget_wrapper == 0) {
+               DWC_DEBUGPL(DBG_ANY, "%s Return(%d): s_pcd==0\n", __func__,
+                           -ENODEV);
+               return -ENODEV;
+       }
+       if (driver == 0 || driver != gadget_wrapper->driver) {
+               DWC_DEBUGPL(DBG_ANY, "%s Return(%d): driver?\n", __func__,
+                           -EINVAL);
+               return -EINVAL;
+       }
+
+       driver->unbind(&gadget_wrapper->gadget);
+       gadget_wrapper->driver = 0;
+
+       DWC_DEBUGPL(DBG_ANY, "unregistered driver '%s'\n", driver->driver.name);
+       return 0;
+}
+
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+#endif /* DWC_HOST_ONLY */
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_regs.h b/drivers/usb/host/dwc_otg/dwc_otg_regs.h
new file mode 100644
index 0000000..0572642
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/dwc_otg_regs.h
@@ -0,0 +1,2550 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_regs.h $
+ * $Revision: #98 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_REGS_H__
+#define __DWC_OTG_REGS_H__
+
+#include "dwc_otg_core_if.h"
+
+/**
+ * @file
+ *
+ * This file contains the data structures for accessing the DWC_otg core registers.
+ *
+ * The application interfaces with the HS OTG core by reading from and
+ * writing to the Control and Status Register (CSR) space through the
+ * AHB Slave interface. These registers are 32 bits wide, and the
+ * addresses are 32-bit-block aligned.
+ * CSRs are classified as follows:
+ * - Core Global Registers
+ * - Device Mode Registers
+ * - Device Global Registers
+ * - Device Endpoint Specific Registers
+ * - Host Mode Registers
+ * - Host Global Registers
+ * - Host Port CSRs
+ * - Host Channel Specific Registers
+ *
+ * Only the Core Global registers can be accessed in both Device and
+ * Host modes. When the HS OTG core is operating in one mode, either
+ * Device or Host, the application must not access registers from the
+ * other mode. When the core switches from one mode to another, the
+ * registers in the new mode of operation must be reprogrammed as they
+ * would be after a power-on reset.
+ */
+
+/****************************************************************************/
+/** DWC_otg Core registers . 
+ * The dwc_otg_core_global_regs structure defines the size
+ * and relative field offsets for the Core Global registers.
+ */
+typedef struct dwc_otg_core_global_regs {
+       /** OTG Control and Status Register.  <i>Offset: 000h</i> */
+       volatile uint32_t gotgctl;
+       /** OTG Interrupt Register.      <i>Offset: 004h</i> */
+       volatile uint32_t gotgint;
+       /**Core AHB Configuration Register.      <i>Offset: 008h</i> */
+       volatile uint32_t gahbcfg;
+
+#define DWC_GLBINTRMASK                0x0001
+#define DWC_DMAENABLE          0x0020
+#define DWC_NPTXEMPTYLVL_EMPTY 0x0080
+#define DWC_NPTXEMPTYLVL_HALFEMPTY     0x0000
+#define DWC_PTXEMPTYLVL_EMPTY  0x0100
+#define DWC_PTXEMPTYLVL_HALFEMPTY      0x0000
+
+       /**Core USB Configuration Register.      <i>Offset: 00Ch</i> */
+       volatile uint32_t gusbcfg;
+       /**Core Reset Register.  <i>Offset: 010h</i> */
+       volatile uint32_t grstctl;
+       /**Core Interrupt Register.      <i>Offset: 014h</i> */
+       volatile uint32_t gintsts;
+       /**Core Interrupt Mask Register.  <i>Offset: 018h</i> */
+       volatile uint32_t gintmsk;
+       /**Receive Status Queue Read Register (Read Only).      <i>Offset: 01Ch</i> */
+       volatile uint32_t grxstsr;
+       /**Receive Status Queue Read & POP Register (Read Only).  <i>Offset: 020h</i>*/
+       volatile uint32_t grxstsp;
+       /**Receive FIFO Size Register.  <i>Offset: 024h</i> */
+       volatile uint32_t grxfsiz;
+       /**Non Periodic Transmit FIFO Size Register.  <i>Offset: 028h</i> */
+       volatile uint32_t gnptxfsiz;
+       /**Non Periodic Transmit FIFO/Queue Status Register (Read
+        * Only). <i>Offset: 02Ch</i> */
+       volatile uint32_t gnptxsts;
+       /**I2C Access Register.  <i>Offset: 030h</i> */
+       volatile uint32_t gi2cctl;
+       /**PHY Vendor Control Register.  <i>Offset: 034h</i> */
+       volatile uint32_t gpvndctl;
+       /**General Purpose Input/Output Register.  <i>Offset: 038h</i> */
+       volatile uint32_t ggpio;
+       /**User ID Register.  <i>Offset: 03Ch</i> */
+       volatile uint32_t guid;
+       /**Synopsys ID Register (Read Only).  <i>Offset: 040h</i> */
+       volatile uint32_t gsnpsid;
+       /**User HW Config1 Register (Read Only).  <i>Offset: 044h</i> */
+       volatile uint32_t ghwcfg1;
+       /**User HW Config2 Register (Read Only).  <i>Offset: 048h</i> */
+       volatile uint32_t ghwcfg2;
+#define DWC_SLAVE_ONLY_ARCH 0
+#define DWC_EXT_DMA_ARCH 1
+#define DWC_INT_DMA_ARCH 2
+
+#define DWC_MODE_HNP_SRP_CAPABLE       0
+#define DWC_MODE_SRP_ONLY_CAPABLE      1
+#define DWC_MODE_NO_HNP_SRP_CAPABLE            2
+#define DWC_MODE_SRP_CAPABLE_DEVICE            3
+#define DWC_MODE_NO_SRP_CAPABLE_DEVICE 4
+#define DWC_MODE_SRP_CAPABLE_HOST      5
+#define DWC_MODE_NO_SRP_CAPABLE_HOST   6
+
+       /**User HW Config3 Register (Read Only).  <i>Offset: 04Ch</i> */
+       volatile uint32_t ghwcfg3;
+       /**User HW Config4 Register (Read Only).  <i>Offset: 050h</i>*/
+       volatile uint32_t ghwcfg4;
+       /** Core LPM Configuration register <i>Offset: 054h</i>*/
+       volatile uint32_t glpmcfg;
+       /** Global PowerDn Register <i>Offset: 058h</i> */
+       volatile uint32_t gpwrdn;
+       /** Global DFIFO SW Config Register  <i>Offset: 05Ch</i> */
+       volatile uint32_t gdfifocfg;
+       /** ADP Control Register  <i>Offset: 060h</i> */
+       volatile uint32_t adpctl;
+       /** Reserved  <i>Offset: 064h-0FFh</i> */
+       volatile uint32_t reserved39[39];
+       /** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */
+       volatile uint32_t hptxfsiz;
+       /** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
+               otherwise Device Transmit FIFO#n Register.
+        * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
+       volatile uint32_t dtxfsiz[15];
+} dwc_otg_core_global_regs_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Control
+ * and Status Register (GOTGCTL).  Set the bits using the bit
+ * fields then write the <i>d32</i> value to the register.
+ */
+typedef union gotgctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned sesreqscs:1;
+               unsigned sesreq:1;
+               unsigned vbvalidoven:1;
+               unsigned vbvalidovval:1;
+               unsigned avalidoven:1;
+               unsigned avalidovval:1;
+               unsigned bvalidoven:1;
+               unsigned bvalidovval:1;
+               unsigned hstnegscs:1;
+               unsigned hnpreq:1;
+               unsigned hstsethnpen:1;
+               unsigned devhnpen:1;
+               unsigned reserved12_15:4;
+               unsigned conidsts:1;
+               unsigned dbnctime:1;
+               unsigned asesvld:1;
+               unsigned bsesvld:1;
+               unsigned otgver:1;
+               unsigned reserved1:1;
+               unsigned multvalidbc:5;
+               unsigned chirpen:1;
+               unsigned reserved28_31:4;
+       } b;
+} gotgctl_data_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Interrupt Register
+ * (GOTGINT).  Set/clear the bits using the bit fields then write the <i>d32</i>
+ * value to the register.
+ */
+typedef union gotgint_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Current Mode */
+               unsigned reserved0_1:2;
+
+               /** Session End Detected */
+               unsigned sesenddet:1;
+
+               unsigned reserved3_7:5;
+
+               /** Session Request Success Status Change */
+               unsigned sesreqsucstschng:1;
+               /** Host Negotiation Success Status Change */
+               unsigned hstnegsucstschng:1;
+
+               unsigned reserved10_16:7;
+
+               /** Host Negotiation Detected */
+               unsigned hstnegdet:1;
+               /** A-Device Timeout Change */
+               unsigned adevtoutchng:1;
+               /** Debounce Done */
+               unsigned debdone:1;
+               /** Multi-Valued input changed */
+               unsigned mvic:1;
+
+               unsigned reserved31_21:11;
+
+       } b;
+} gotgint_data_t;
+
+/**
+ * This union represents the bit fields of the Core AHB Configuration
+ * Register (GAHBCFG). Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gahbcfg_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned glblintrmsk:1;
+#define DWC_GAHBCFG_GLBINT_ENABLE              1
+
+               unsigned hburstlen:4;
+#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE       0
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR         1
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR4                3
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR8                5
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR16       7
+
+               unsigned dmaenable:1;
+#define DWC_GAHBCFG_DMAENABLE                  1
+               unsigned reserved:1;
+               unsigned nptxfemplvl_txfemplvl:1;
+               unsigned ptxfemplvl:1;
+#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY          1
+#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY      0
+               unsigned reserved9_20:12;
+               unsigned remmemsupp:1;
+               unsigned notialldmawrit:1;
+               unsigned ahbsingle:1;
+               unsigned reserved24_31:8;
+       } b;
+} gahbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core USB Configuration
+ * Register (GUSBCFG). Set the bits using the bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union gusbcfg_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned toutcal:3;
+               unsigned phyif:1;
+               unsigned ulpi_utmi_sel:1;
+               unsigned fsintf:1;
+               unsigned physel:1;
+               unsigned ddrsel:1;
+               unsigned srpcap:1;
+               unsigned hnpcap:1;
+               unsigned usbtrdtim:4;
+               unsigned reserved1:1;
+               unsigned phylpwrclksel:1;
+               unsigned otgutmifssel:1;
+               unsigned ulpi_fsls:1;
+               unsigned ulpi_auto_res:1;
+               unsigned ulpi_clk_sus_m:1;
+               unsigned ulpi_ext_vbus_drv:1;
+               unsigned ulpi_int_vbus_indicator:1;
+               unsigned term_sel_dl_pulse:1;
+               unsigned indicator_complement:1;
+               unsigned indicator_pass_through:1;
+               unsigned ulpi_int_prot_dis:1;
+               unsigned ic_usb_cap:1;
+               unsigned ic_traffic_pull_remove:1;
+               unsigned tx_end_delay:1;
+               unsigned force_host_mode:1;
+               unsigned force_dev_mode:1;
+               unsigned reserved31:1;
+       } b;
+} gusbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core Reset Register
+ * (GRSTCTL).  Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union grstctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Core Soft Reset (CSftRst) (Device and Host)
+                *
+                * The application can flush the control logic in the
+                * entire core using this bit. This bit resets the
+                * pipelines in the AHB Clock domain as well as the
+                * PHY Clock domain.
+                *
+                * The state machines are reset to an IDLE state, the
+                * control bits in the CSRs are cleared, all the
+                * transmit FIFOs and the receive FIFO are flushed.
+                *
+                * The status mask bits that control the generation of
+                * the interrupt, are cleared, to clear the
+                * interrupt. The interrupt status bits are not
+                * cleared, so the application can get the status of
+                * any events that occurred in the core after it has
+                * set this bit.
+                *
+                * Any transactions on the AHB are terminated as soon
+                * as possible following the protocol. Any
+                * transactions on the USB are terminated immediately.
+                *
+                * The configuration settings in the CSRs are
+                * unchanged, so the software doesn't have to
+                * reprogram these registers (Device
+                * Configuration/Host Configuration/Core System
+                * Configuration/Core PHY Configuration).
+                *
+                * The application can write to this bit, any time it
+                * wants to reset the core. This is a self clearing
+                * bit and the core clears this bit after all the
+                * necessary logic is reset in the core, which may
+                * take several clocks, depending on the current state
+                * of the core.
+                */
+               unsigned csftrst:1;
+               /** Hclk Soft Reset
+                *
+                * The application uses this bit to reset the control logic in
+                * the AHB clock domain. Only AHB clock domain pipelines are
+                * reset.
+                */
+               unsigned hsftrst:1;
+               /** Host Frame Counter Reset (Host Only)<br>
+                *
+                * The application can reset the (micro)frame number
+                * counter inside the core, using this bit. When the
+                * (micro)frame counter is reset, the subsequent SOF
+                * sent out by the core, will have a (micro)frame
+                * number of 0.
+                */
+               unsigned hstfrm:1;
+               /** In Token Sequence Learning Queue Flush
+                * (INTknQFlsh) (Device Only)
+                */
+               unsigned intknqflsh:1;
+               /** RxFIFO Flush (RxFFlsh) (Device and Host)
+                *
+                * The application can flush the entire Receive FIFO
+                * using this bit. The application must first
+                * ensure that the core is not in the middle of a
+                * transaction. The application should write into
+                * this bit, only after making sure that neither the
+                * DMA engine is reading from the RxFIFO nor the MAC
+                * is writing the data in to the FIFO. The
+                * application should wait until the bit is cleared
+                * before performing any other operations. This bit
+                * will takes 8 clocks (slowest of PHY or AHB clock)
+                * to clear.
+                */
+               unsigned rxfflsh:1;
+               /** TxFIFO Flush (TxFFlsh) (Device and Host). 
+                *
+                * This bit is used to selectively flush a single or
+                * all transmit FIFOs. The application must first
+                * ensure that the core is not in the middle of a
+                * transaction. The application should write into
+                * this bit, only after making sure that neither the
+                * DMA engine is writing into the TxFIFO nor the MAC
+                * is reading the data out of the FIFO. The
+                * application should wait until the core clears this
+                * bit, before performing any operations. This bit
+                * will takes 8 clocks (slowest of PHY or AHB clock)
+                * to clear.
+                */
+               unsigned txfflsh:1;
+
+               /** TxFIFO Number (TxFNum) (Device and Host).
+                *
+                * This is the FIFO number which needs to be flushed,
+                * using the TxFIFO Flush bit. This field should not
+                * be changed until the TxFIFO Flush bit is cleared by
+                * the core.
+                *       - 0x0 : Non Periodic TxFIFO Flush
+                *       - 0x1 : Periodic TxFIFO #1 Flush in device mode
+                *         or Periodic TxFIFO in host mode
+                *       - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+                *       - ...
+                *       - 0xF : Periodic TxFIFO #15 Flush in device mode
+                *       - 0x10: Flush all the Transmit NonPeriodic and
+                *         Transmit Periodic FIFOs in the core
+                */
+               unsigned txfnum:5;
+               /** Reserved */
+               unsigned reserved11_29:19;
+               /** DMA Request Signal.  Indicated DMA request is in
+                * probress. Used for debug purpose. */
+               unsigned dmareq:1;
+               /** AHB Master Idle.  Indicates the AHB Master State
+                * Machine is in IDLE condition. */
+               unsigned ahbidle:1;
+       } b;
+} grstctl_t;
+
+/**
+ * This union represents the bit fields of the Core Interrupt Mask
+ * Register (GINTMSK). Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gintmsk_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved0:1;
+               unsigned modemismatch:1;
+               unsigned otgintr:1;
+               unsigned sofintr:1;
+               unsigned rxstsqlvl:1;
+               unsigned nptxfempty:1;
+               unsigned ginnakeff:1;
+               unsigned goutnakeff:1;
+               unsigned ulpickint:1;
+               unsigned i2cintr:1;
+               unsigned erlysuspend:1;
+               unsigned usbsuspend:1;
+               unsigned usbreset:1;
+               unsigned enumdone:1;
+               unsigned isooutdrop:1;
+               unsigned eopframe:1;
+               unsigned restoredone:1;
+               unsigned epmismatch:1;
+               unsigned inepintr:1;
+               unsigned outepintr:1;
+               unsigned incomplisoin:1;
+               unsigned incomplisoout:1;
+               unsigned fetsusp:1;
+               unsigned resetdet:1;
+               unsigned portintr:1;
+               unsigned hcintr:1;
+               unsigned ptxfempty:1;
+               unsigned lpmtranrcvd:1;
+               unsigned conidstschng:1;
+               unsigned disconnect:1;
+               unsigned sessreqintr:1;
+               unsigned wkupintr:1;
+       } b;
+} gintmsk_data_t;
+/**
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS).  Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union gintsts_data {
+       /** raw register data */
+       uint32_t d32;
+#define DWC_SOF_INTR_MASK 0x0008
+       /** register bits */
+       struct {
+#define DWC_HOST_MODE 1
+               unsigned curmode:1;
+               unsigned modemismatch:1;
+               unsigned otgintr:1;
+               unsigned sofintr:1;
+               unsigned rxstsqlvl:1;
+               unsigned nptxfempty:1;
+               unsigned ginnakeff:1;
+               unsigned goutnakeff:1;
+               unsigned ulpickint:1;
+               unsigned i2cintr:1;
+               unsigned erlysuspend:1;
+               unsigned usbsuspend:1;
+               unsigned usbreset:1;
+               unsigned enumdone:1;
+               unsigned isooutdrop:1;
+               unsigned eopframe:1;
+               unsigned restoredone:1;
+               unsigned epmismatch:1;
+               unsigned inepint:1;
+               unsigned outepintr:1;
+               unsigned incomplisoin:1;
+               unsigned incomplisoout:1;
+               unsigned fetsusp:1;
+               unsigned resetdet:1;
+               unsigned portintr:1;
+               unsigned hcintr:1;
+               unsigned ptxfempty:1;
+               unsigned lpmtranrcvd:1;
+               unsigned conidstschng:1;
+               unsigned disconnect:1;
+               unsigned sessreqintr:1;
+               unsigned wkupintr:1;
+       } b;
+} gintsts_data_t;
+
+/**
+ * This union represents the bit fields in the Device Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union device_grxsts_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned epnum:4;
+               unsigned bcnt:11;
+               unsigned dpid:2;
+
+#define DWC_STS_DATA_UPDT              0x2     // OUT Data Packet
+#define DWC_STS_XFER_COMP              0x3     // OUT Data Transfer Complete
+
+#define DWC_DSTS_GOUT_NAK              0x1     // Global OUT NAK
+#define DWC_DSTS_SETUP_COMP            0x4     // Setup Phase Complete
+#define DWC_DSTS_SETUP_UPDT 0x6        // SETUP Packet
+               unsigned pktsts:4;
+               unsigned fn:4;
+               unsigned reserved25_31:7;
+       } b;
+} device_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union host_grxsts_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned chnum:4;
+               unsigned bcnt:11;
+               unsigned dpid:2;
+
+               unsigned pktsts:4;
+#define DWC_GRXSTS_PKTSTS_IN                     0x2
+#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP   0x3
+#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5
+#define DWC_GRXSTS_PKTSTS_CH_HALTED              0x7
+
+               unsigned reserved21_31:11;
+       } b;
+} host_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
+ * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the <i>d32</i> element 
+ * then read out the bits using the <i>b</i>it elements.
+ */
+typedef union fifosize_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned startaddr:16;
+               unsigned depth:16;
+       } b;
+} fifosize_data_t;
+
+/**
+ * This union represents the bit fields in the Non-Periodic Transmit
+ * FIFO/Queue Status Register (GNPTXSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union gnptxsts_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned nptxfspcavail:16;
+               unsigned nptxqspcavail:8;
+               /** Top of the Non-Periodic Transmit Request Queue
+                *      - bit 24 - Terminate (Last entry for the selected
+                *        channel/EP)
+                *      - bits 26:25 - Token Type
+                *        - 2'b00 - IN/OUT
+                *        - 2'b01 - Zero Length OUT
+                *        - 2'b10 - PING/Complete Split
+                *        - 2'b11 - Channel Halt
+                *      - bits 30:27 - Channel/EP Number
+                */
+               unsigned nptxqtop_terminate:1;
+               unsigned nptxqtop_token:2;
+               unsigned nptxqtop_chnep:4;
+               unsigned reserved:1;
+       } b;
+} gnptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Transmit
+ * FIFO Status Register (DTXFSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union dtxfsts_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned txfspcavail:16;
+               unsigned reserved:16;
+       } b;
+} dtxfsts_data_t;
+
+/**
+ * This union represents the bit fields in the I2C Control Register
+ * (I2CCTL). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gi2cctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned rwdata:8;
+               unsigned regaddr:8;
+               unsigned addr:7;
+               unsigned i2cen:1;
+               unsigned ack:1;
+               unsigned i2csuspctl:1;
+               unsigned i2cdevaddr:2;
+               unsigned i2cdatse0:1;
+               unsigned reserved:1;
+               unsigned rw:1;
+               unsigned bsydne:1;
+       } b;
+} gi2cctl_data_t;
+
+/**
+ * This union represents the bit fields in the PHY Vendor Control Register
+ * (GPVNDCTL). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gpvndctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned regdata:8;
+               unsigned vctrl:8;
+               unsigned regaddr16_21:6;
+               unsigned regwr:1;
+               unsigned reserved23_24:2;
+               unsigned newregreq:1;
+               unsigned vstsbsy:1;
+               unsigned vstsdone:1;
+               unsigned reserved28_30:3;
+               unsigned disulpidrvr:1;
+       } b;
+} gpvndctl_data_t;
+
+/**
+ * This union represents the bit fields in the General Purpose 
+ * Input/Output Register (GGPIO).
+ * Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union ggpio_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned gpi:16;
+               unsigned gpo:16;
+       } b;
+} ggpio_data_t;
+
+/**
+ * This union represents the bit fields in the User ID Register
+ * (GUID). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union guid_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned rwdata:32;
+       } b;
+} guid_data_t;
+
+/**
+ * This union represents the bit fields in the Synopsys ID Register
+ * (GSNPSID). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gsnpsid_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned rwdata:32;
+       } b;
+} gsnpsid_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config1
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg1_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned ep_dir0:2;
+               unsigned ep_dir1:2;
+               unsigned ep_dir2:2;
+               unsigned ep_dir3:2;
+               unsigned ep_dir4:2;
+               unsigned ep_dir5:2;
+               unsigned ep_dir6:2;
+               unsigned ep_dir7:2;
+               unsigned ep_dir8:2;
+               unsigned ep_dir9:2;
+               unsigned ep_dir10:2;
+               unsigned ep_dir11:2;
+               unsigned ep_dir12:2;
+               unsigned ep_dir13:2;
+               unsigned ep_dir14:2;
+               unsigned ep_dir15:2;
+       } b;
+} hwcfg1_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config2
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg2_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /* GHWCFG2 */
+               unsigned op_mode:3;
+#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0
+#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1
+#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6
+
+               unsigned architecture:2;
+               unsigned point2point:1;
+               unsigned hs_phy_type:2;
+#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1
+#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3
+
+               unsigned fs_phy_type:2;
+               unsigned num_dev_ep:4;
+               unsigned num_host_chan:4;
+               unsigned perio_ep_supported:1;
+               unsigned dynamic_fifo:1;
+               unsigned multi_proc_int:1;
+               unsigned reserved21:1;
+               unsigned nonperio_tx_q_depth:2;
+               unsigned host_perio_tx_q_depth:2;
+               unsigned dev_token_q_depth:5;
+               unsigned otg_enable_ic_usb:1;
+       } b;
+} hwcfg2_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config3
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg3_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /* GHWCFG3 */
+               unsigned xfer_size_cntr_width:4;
+               unsigned packet_size_cntr_width:3;
+               unsigned otg_func:1;
+               unsigned i2c:1;
+               unsigned vendor_ctrl_if:1;
+               unsigned optional_features:1;
+               unsigned synch_reset_type:1;
+               unsigned adp_supp:1;
+               unsigned otg_enable_hsic:1;
+               unsigned bc_support:1;
+               unsigned otg_lpm_en:1;
+               unsigned dfifo_depth:16;
+       } b;
+} hwcfg3_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config4
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg4_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned num_dev_perio_in_ep:4;
+               unsigned power_optimiz:1;
+               unsigned min_ahb_freq:1;
+               unsigned hiber:1;
+               unsigned xhiber:1;
+               unsigned reserved:6;
+               unsigned utmi_phy_data_width:2;
+               unsigned num_dev_mode_ctrl_ep:4;
+               unsigned iddig_filt_en:1;
+               unsigned vbus_valid_filt_en:1;
+               unsigned a_valid_filt_en:1;
+               unsigned b_valid_filt_en:1;
+               unsigned session_end_filt_en:1;
+               unsigned ded_fifo_en:1;
+               unsigned num_in_eps:4;
+               unsigned desc_dma:1;
+               unsigned desc_dma_dyn:1;
+       } b;
+} hwcfg4_data_t;
+
+/**
+ * This union represents the bit fields of the Core LPM Configuration
+ * Register (GLPMCFG). Set the bits using bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union glpmctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** LPM-Capable (LPMCap) (Device and Host)
+                * The application uses this bit to control
+                * the DWC_otg core LPM capabilities.
+                */
+               unsigned lpm_cap_en:1;
+               /** LPM response programmed by application (AppL1Res) (Device)
+                * Handshake response to LPM token pre-programmed
+                * by device application software.
+                */
+               unsigned appl_resp:1;
+               /** Host Initiated Resume Duration (HIRD) (Device and Host)
+                * In Host mode this field indicates the value of HIRD
+                * to be sent in an LPM transaction.
+                * In Device mode this field is updated with the
+                * Received LPM Token HIRD bmAttribute
+                * when an ACK/NYET/STALL response is sent
+                * to an LPM transaction.
+                */
+               unsigned hird:4;
+               /** RemoteWakeEnable (bRemoteWake) (Device and Host)
+                * In Host mode this bit indicates the value of remote
+                * wake up to be sent in wIndex field of LPM transaction.
+                * In Device mode this field is updated with the
+                * Received LPM Token bRemoteWake bmAttribute
+                * when an ACK/NYET/STALL response is sent
+                * to an LPM transaction.
+                */
+               unsigned rem_wkup_en:1;
+               /** Enable utmi_sleep_n (EnblSlpM) (Device and Host)
+                * The application uses this bit to control
+                * the utmi_sleep_n assertion to the PHY when in L1 state.
+                */
+               unsigned en_utmi_sleep:1;
+               /** HIRD Threshold (HIRD_Thres) (Device and Host)
+                */
+               unsigned hird_thres:5;
+               /** LPM Response (CoreL1Res) (Device and Host)
+                * In Host mode this bit contains handsake response to
+                * LPM transaction.
+                * In Device mode the response of the core to
+                * LPM transaction received is reflected in these two bits.
+                       - 0x0 : ERROR (No handshake response)
+                       - 0x1 : STALL
+                       - 0x2 : NYET
+                       - 0x3 : ACK                     
+                */
+               unsigned lpm_resp:2;
+               /** Port Sleep Status (SlpSts) (Device and Host)
+                * This bit is set as long as a Sleep condition
+                * is present on the USB bus.
+                */
+               unsigned prt_sleep_sts:1;
+               /** Sleep State Resume OK (L1ResumeOK) (Device and Host)
+                * Indicates that the application or host
+                * can start resume from Sleep state.
+                */
+               unsigned sleep_state_resumeok:1;
+               /** LPM channel Index (LPM_Chnl_Indx) (Host)
+                * The channel number on which the LPM transaction
+                * has to be applied while sending
+                * an LPM transaction to the local device.
+                */
+               unsigned lpm_chan_index:4;
+               /** LPM Retry Count (LPM_Retry_Cnt) (Host)
+                * Number host retries that would be performed
+                * if the device response was not valid response.
+                */
+               unsigned retry_count:3;
+               /** Send LPM Transaction (SndLPM) (Host)
+                * When set by application software,
+                * an LPM transaction containing two tokens
+                * is sent.
+                */
+               unsigned send_lpm:1;
+               /** LPM Retry status (LPM_RetryCnt_Sts) (Host)
+                * Number of LPM Host Retries still remaining
+                * to be transmitted for the current LPM sequence
+                */
+               unsigned retry_count_sts:3;
+               unsigned reserved28_29:2;
+               /** In host mode once this bit is set, the host
+                * configures to drive the HSIC Idle state on the bus.
+                * It then waits for the  device to initiate the Connect sequence.
+                * In device mode once this bit is set, the device waits for
+                * the HSIC Idle line state on the bus. Upon receving the Idle
+                * line state, it initiates the HSIC Connect sequence.
+                */
+               unsigned hsic_connect:1;
+               /** This bit overrides and functionally inverts
+                * the if_select_hsic input port signal.
+                */
+               unsigned inv_sel_hsic:1;
+       } b;
+} glpmcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core ADP Timer, Control and
+ * Status Register (ADPTIMCTLSTS). Set the bits using bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union adpctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Probe Discharge (PRB_DSCHG)
+                *  These bits set the times for TADP_DSCHG. 
+                *  These bits are defined as follows:
+                *  2'b00 - 4 msec
+                *  2'b01 - 8 msec
+                *  2'b10 - 16 msec
+                *  2'b11 - 32 msec
+                */
+               unsigned prb_dschg:2;
+               /** Probe Delta (PRB_DELTA)
+                *  These bits set the resolution for RTIM   value.
+                *  The bits are defined in units of 32 kHz clock cycles as follows:
+                *  2'b00  -  1 cycles
+                *  2'b01  -  2 cycles
+                *  2'b10 -  3 cycles
+                *  2'b11 - 4 cycles
+                *  For example if this value is chosen to 2'b01, it means that RTIM
+                *  increments for every 3(three) 32Khz clock cycles.
+                */
+               unsigned prb_delta:2;
+               /** Probe Period (PRB_PER)
+                *  These bits sets the TADP_PRD as shown in Figure 4 as follows:
+                *  2'b00  -  0.625 to 0.925 sec (typical 0.775 sec)
+                *  2'b01  -  1.25 to 1.85 sec (typical 1.55 sec)
+                *  2'b10  -  1.9 to 2.6 sec (typical 2.275 sec)
+                *  2'b11  -  Reserved
+                */
+               unsigned prb_per:2;
+               /** These bits capture the latest time it took for VBUS to ramp from 
+                *  VADP_SINK to VADP_PRB. 
+                *  0x000  -  1 cycles
+                *  0x001  -  2 cycles
+                *  0x002  -  3 cycles
+                *  etc
+                *  0x7FF  -  2048 cycles
+                *  A time of 1024 cycles at 32 kHz corresponds to a time of 32 msec.
+               */
+               unsigned rtim:11;
+               /** Enable Probe (EnaPrb)
+                *  When programmed to 1'b1, the core performs a probe operation.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned enaprb:1;
+               /** Enable Sense (EnaSns)
+                *  When programmed to 1'b1, the core performs a Sense operation.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned enasns:1;
+               /** ADP Reset (ADPRes)
+                *  When set, ADP controller is reset.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adpres:1;
+               /** ADP Enable (ADPEn)
+                *  When set, the core performs either ADP probing or sensing
+                *  based on EnaPrb or EnaSns.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adpen:1;
+               /** ADP Probe Interrupt (ADP_PRB_INT)
+                *  When this bit is set, it means that the VBUS
+                *  voltage is greater than VADP_PRB or VADP_PRB is reached.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adp_prb_int:1;
+               /**
+                *  ADP Sense Interrupt (ADP_SNS_INT)
+                *  When this bit is set, it means that the VBUS voltage is greater than 
+                *  VADP_SNS value or VADP_SNS is reached.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adp_sns_int:1;
+               /** ADP Tomeout Interrupt (ADP_TMOUT_INT)
+                *  This bit is relevant only for an ADP probe.
+                *  When this bit is set, it means that the ramp time has
+                *  completed ie ADPCTL.RTIM has reached its terminal value
+                *  of 0x7FF.  This is a debug feature that allows software
+                *  to read the ramp time after each cycle.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adp_tmout_int:1;
+               /** ADP Probe Interrupt Mask (ADP_PRB_INT_MSK)
+                *  When this bit is set, it unmasks the interrupt due to ADP_PRB_INT.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adp_prb_int_msk:1;
+               /** ADP Sense Interrupt Mask (ADP_SNS_INT_MSK)
+                *  When this bit is set, it unmasks the interrupt due to ADP_SNS_INT.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adp_sns_int_msk:1;
+               /** ADP Timoeout Interrupt Mask (ADP_TMOUT_MSK)
+                *  When this bit is set, it unmasks the interrupt due to ADP_TMOUT_INT.
+                *  This bit is valid only if OTG_Ver = 1'b1.
+                */
+               unsigned adp_tmout_int_msk:1;
+               /** Access Request
+                * 2'b00 - Read/Write Valid (updated by the core) 
+                * 2'b01 - Read
+                * 2'b00 - Write
+                * 2'b00 - Reserved
+                */
+               unsigned ar:2;
+                /** Reserved */
+               unsigned reserved29_31:3;
+       } b;
+} adpctl_data_t;
+
+////////////////////////////////////////////
+// Device Registers
+/**
+ * Device Global Registers. <i>Offsets 800h-BFFh</i>
+ *
+ * The following structures define the size and relative field offsets
+ * for the Device Mode Registers.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_global_regs {
+       /** Device Configuration Register. <i>Offset 800h</i> */
+       volatile uint32_t dcfg;
+       /** Device Control Register. <i>Offset: 804h</i> */
+       volatile uint32_t dctl;
+       /** Device Status Register (Read Only). <i>Offset: 808h</i> */
+       volatile uint32_t dsts;
+       /** Reserved. <i>Offset: 80Ch</i> */
+       uint32_t unused;
+       /** Device IN Endpoint Common Interrupt Mask
+        * Register. <i>Offset: 810h</i> */
+       volatile uint32_t diepmsk;
+       /** Device OUT Endpoint Common Interrupt Mask
+        * Register. <i>Offset: 814h</i> */
+       volatile uint32_t doepmsk;
+       /** Device All Endpoints Interrupt Register.  <i>Offset: 818h</i> */
+       volatile uint32_t daint;
+       /** Device All Endpoints Interrupt Mask Register.  <i>Offset:
+        * 81Ch</i> */
+       volatile uint32_t daintmsk;
+       /** Device IN Token Queue Read Register-1 (Read Only).
+        * <i>Offset: 820h</i> */
+       volatile uint32_t dtknqr1;
+       /** Device IN Token Queue Read Register-2 (Read Only).
+        * <i>Offset: 824h</i> */
+       volatile uint32_t dtknqr2;
+       /** Device VBUS  discharge Register.  <i>Offset: 828h</i> */
+       volatile uint32_t dvbusdis;
+       /** Device VBUS Pulse Register.  <i>Offset: 82Ch</i> */
+       volatile uint32_t dvbuspulse;
+       /** Device IN Token Queue Read Register-3 (Read Only). /
+        *      Device Thresholding control register (Read/Write)
+        * <i>Offset: 830h</i> */
+       volatile uint32_t dtknqr3_dthrctl;
+       /** Device IN Token Queue Read Register-4 (Read Only). /
+        *      Device IN EPs empty Inr. Mask Register (Read/Write)
+        * <i>Offset: 834h</i> */
+       volatile uint32_t dtknqr4_fifoemptymsk;
+       /** Device Each Endpoint Interrupt Register (Read Only). /
+        * <i>Offset: 838h</i> */
+       volatile uint32_t deachint;
+       /** Device Each Endpoint Interrupt mask Register (Read/Write). /
+        * <i>Offset: 83Ch</i> */
+       volatile uint32_t deachintmsk;
+       /** Device Each In Endpoint Interrupt mask Register (Read/Write). /
+        * <i>Offset: 840h</i> */
+       volatile uint32_t diepeachintmsk[MAX_EPS_CHANNELS];
+       /** Device Each Out Endpoint Interrupt mask Register (Read/Write). /
+        * <i>Offset: 880h</i> */
+       volatile uint32_t doepeachintmsk[MAX_EPS_CHANNELS];
+} dwc_otg_device_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Device Configuration
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.  Write the
+ * <i>d32</i> member to the dcfg register.
+ */
+typedef union dcfg_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Device Speed */
+               unsigned devspd:2;
+               /** Non Zero Length Status OUT Handshake */
+               unsigned nzstsouthshk:1;
+#define DWC_DCFG_SEND_STALL 1
+
+               unsigned ena32khzs:1;
+               /** Device Addresses */
+               unsigned devaddr:7;
+               /** Periodic Frame Interval */
+               unsigned perfrint:2;
+#define DWC_DCFG_FRAME_INTERVAL_80 0
+#define DWC_DCFG_FRAME_INTERVAL_85 1
+#define DWC_DCFG_FRAME_INTERVAL_90 2
+#define DWC_DCFG_FRAME_INTERVAL_95 3
+               
+               /** Enable Device OUT NAK for bulk in DDMA mode */
+               unsigned endevoutnak:1;
+
+               unsigned reserved14_17:4;
+               /** In Endpoint Mis-match count */
+               unsigned epmscnt:5;
+               /** Enable Descriptor DMA in Device mode */
+               unsigned descdma:1;
+               unsigned perschintvl:2;
+               unsigned resvalid:6;
+       } b;
+} dcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Device Control
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Remote Wakeup */
+               unsigned rmtwkupsig:1;
+               /** Soft Disconnect */
+               unsigned sftdiscon:1;
+               /** Global Non-Periodic IN NAK Status */
+               unsigned gnpinnaksts:1;
+               /** Global OUT NAK Status */
+               unsigned goutnaksts:1;
+               /** Test Control */
+               unsigned tstctl:3;
+               /** Set Global Non-Periodic IN NAK */
+               unsigned sgnpinnak:1;
+               /** Clear Global Non-Periodic IN NAK */
+               unsigned cgnpinnak:1;
+               /** Set Global OUT NAK */
+               unsigned sgoutnak:1;
+               /** Clear Global OUT NAK */
+               unsigned cgoutnak:1;
+               /** Power-On Programming Done */
+               unsigned pwronprgdone:1;
+               /** Reserved */
+               unsigned reserved:1;
+               /** Global Multi Count */
+               unsigned gmc:2;
+               /** Ignore Frame Number for ISOC EPs */
+               unsigned ifrmnum:1;
+               /** NAK on Babble */
+               unsigned nakonbble:1;
+               /** Enable Continue on BNA */
+               unsigned encontonbna:1;
+
+               unsigned reserved18_31:14;
+       } b;
+} dctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device Status
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dsts_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Suspend Status */
+               unsigned suspsts:1;
+               /** Enumerated Speed */
+               unsigned enumspd:2;
+#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0
+#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1
+#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ              2
+#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ             3
+               /** Erratic Error */
+               unsigned errticerr:1;
+               unsigned reserved4_7:4;
+               /** Frame or Microframe Number of the received SOF */
+               unsigned soffn:14;
+               unsigned reserved22_31:10;
+       } b;
+} dsts_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN EP Interrupt
+ * Register and the Device IN EP Common Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *      bits using the <i>b</i>it elements.
+ */
+typedef union diepint_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Transfer complete mask */
+               unsigned xfercompl:1;
+               /** Endpoint disable mask */
+               unsigned epdisabled:1;
+               /** AHB Error mask */
+               unsigned ahberr:1;
+               /** TimeOUT Handshake mask (non-ISOC EPs) */
+               unsigned timeout:1;
+               /** IN Token received with TxF Empty mask */
+               unsigned intktxfemp:1;
+               /** IN Token Received with EP mismatch mask */
+               unsigned intknepmis:1;
+               /** IN Endpoint NAK Effective mask */
+               unsigned inepnakeff:1;
+               /** Reserved */
+               unsigned emptyintr:1;
+
+               unsigned txfifoundrn:1;
+
+               /** BNA Interrupt mask */
+               unsigned bna:1;
+
+               unsigned reserved10_12:3;
+               /** BNA Interrupt mask */
+               unsigned nak:1;
+
+               unsigned reserved14_31:18;
+       } b;
+} diepint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN EP
+ * Common/Dedicated Interrupt Mask Register.
+ */
+typedef union diepint_data diepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP Interrupt
+ * Registerand Device OUT EP Common Interrupt Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *      bits using the <i>b</i>it elements.
+ */
+typedef union doepint_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Transfer complete */
+               unsigned xfercompl:1;
+               /** Endpoint disable  */
+               unsigned epdisabled:1;
+               /** AHB Error */
+               unsigned ahberr:1;
+               /** Setup Phase Done (contorl EPs) */
+               unsigned setup:1;
+               /** OUT Token Received when Endpoint Disabled */
+               unsigned outtknepdis:1;
+
+               unsigned stsphsercvd:1;
+               /** Back-to-Back SETUP Packets Received */
+               unsigned back2backsetup:1;
+
+               unsigned reserved7:1;
+               /** OUT packet Error */
+               unsigned outpkterr:1;
+               /** BNA Interrupt */
+               unsigned bna:1;
+
+               unsigned reserved10:1;
+               /** Packet Drop Status */
+               unsigned pktdrpsts:1;
+               /** Babble Interrupt */
+               unsigned babble:1;
+               /** NAK Interrupt */
+               unsigned nak:1;
+               /** NYET Interrupt */
+               unsigned nyet:1;
+               /** Bit indicating setup packet received */
+               unsigned sr:1;
+
+               unsigned reserved16_31:16;
+       } b;
+} doepint_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP
+ * Common/Dedicated Interrupt Mask Register.
+ */
+typedef union doepint_data doepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device All EP Interrupt
+ * and Mask Registers.
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *      bits using the <i>b</i>it elements.
+ */
+typedef union daint_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** IN Endpoint bits */
+               unsigned in:16;
+               /** OUT Endpoint bits */
+               unsigned out:16;
+       } ep;
+       struct {
+               /** IN Endpoint bits */
+               unsigned inep0:1;
+               unsigned inep1:1;
+               unsigned inep2:1;
+               unsigned inep3:1;
+               unsigned inep4:1;
+               unsigned inep5:1;
+               unsigned inep6:1;
+               unsigned inep7:1;
+               unsigned inep8:1;
+               unsigned inep9:1;
+               unsigned inep10:1;
+               unsigned inep11:1;
+               unsigned inep12:1;
+               unsigned inep13:1;
+               unsigned inep14:1;
+               unsigned inep15:1;
+               /** OUT Endpoint bits */
+               unsigned outep0:1;
+               unsigned outep1:1;
+               unsigned outep2:1;
+               unsigned outep3:1;
+               unsigned outep4:1;
+               unsigned outep5:1;
+               unsigned outep6:1;
+               unsigned outep7:1;
+               unsigned outep8:1;
+               unsigned outep9:1;
+               unsigned outep10:1;
+               unsigned outep11:1;
+               unsigned outep12:1;
+               unsigned outep13:1;
+               unsigned outep14:1;
+               unsigned outep15:1;
+       } b;
+} daint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN Token Queue
+ * Read Registers.
+ * - Read the register into the <i>d32</i> member.
+ * - READ-ONLY Register
+ */
+typedef union dtknq1_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** In Token Queue Write Pointer */
+               unsigned intknwptr:5;
+               /** Reserved */
+               unsigned reserved05_06:2;
+               /** write pointer has wrapped. */
+               unsigned wrap_bit:1;
+               /** EP Numbers of IN Tokens 0 ... 4 */
+               unsigned epnums0_5:24;
+       } b;
+} dtknq1_data_t;
+
+/**
+ * This union represents Threshold control Register
+ * - Read and write the register into the <i>d32</i> member.
+ * - READ-WRITABLE Register
+ */
+typedef union dthrctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** non ISO Tx Thr. Enable */
+               unsigned non_iso_thr_en:1;
+               /** ISO Tx Thr. Enable */
+               unsigned iso_thr_en:1;
+               /** Tx Thr. Length */
+               unsigned tx_thr_len:9;
+               /** AHB Threshold ratio */
+               unsigned ahb_thr_ratio:2;
+               /** Reserved */
+               unsigned reserved13_15:3;
+               /** Rx Thr. Enable */
+               unsigned rx_thr_en:1;
+               /** Rx Thr. Length */
+               unsigned rx_thr_len:9;
+               unsigned reserved26:1;
+               /** Arbiter Parking Enable*/
+               unsigned arbprken:1;
+               /** Reserved */
+               unsigned reserved28_31:4;
+       } b;
+} dthrctl_data_t;
+
+/**
+ * Device Logical IN Endpoint-Specific Registers. <i>Offsets
+ * 900h-AFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_in_ep_regs {
+       /** Device IN Endpoint Control Register. <i>Offset:900h +
+        * (ep_num * 20h) + 00h</i> */
+       volatile uint32_t diepctl;
+       /** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */
+       uint32_t reserved04;
+       /** Device IN Endpoint Interrupt Register. <i>Offset:900h +
+        * (ep_num * 20h) + 08h</i> */
+       volatile uint32_t diepint;
+       /** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */
+       uint32_t reserved0C;
+       /** Device IN Endpoint Transfer Size
+        * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */
+       volatile uint32_t dieptsiz;
+       /** Device IN Endpoint DMA Address Register. <i>Offset:900h +
+        * (ep_num * 20h) + 14h</i> */
+       volatile uint32_t diepdma;
+       /** Device IN Endpoint Transmit FIFO Status Register. <i>Offset:900h +
+        * (ep_num * 20h) + 18h</i> */
+       volatile uint32_t dtxfsts;
+       /** Device IN Endpoint DMA Buffer Register. <i>Offset:900h +
+        * (ep_num * 20h) + 1Ch</i> */
+       volatile uint32_t diepdmab;
+} dwc_otg_dev_in_ep_regs_t;
+
+/**
+ * Device Logical OUT Endpoint-Specific Registers. <i>Offsets:
+ * B00h-CFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_out_ep_regs {
+       /** Device OUT Endpoint Control Register. <i>Offset:B00h +
+        * (ep_num * 20h) + 00h</i> */
+       volatile uint32_t doepctl;
+       /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 04h</i> */
+       uint32_t reserved04;
+       /** Device OUT Endpoint Interrupt Register. <i>Offset:B00h +
+        * (ep_num * 20h) + 08h</i> */
+       volatile uint32_t doepint;
+       /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */
+       uint32_t reserved0C;
+       /** Device OUT Endpoint Transfer Size Register. <i>Offset:
+        * B00h + (ep_num * 20h) + 10h</i> */
+       volatile uint32_t doeptsiz;
+       /** Device OUT Endpoint DMA Address Register. <i>Offset:B00h
+        * + (ep_num * 20h) + 14h</i> */
+       volatile uint32_t doepdma;
+       /** Reserved. <i>Offset:B00h +   * (ep_num * 20h) + 18h</i> */
+       uint32_t unused;
+       /** Device OUT Endpoint DMA Buffer Register. <i>Offset:B00h
+        * + (ep_num * 20h) + 1Ch</i> */
+       uint32_t doepdmab;
+} dwc_otg_dev_out_ep_regs_t;
+
+/**
+ * This union represents the bit fields in the Device EP Control
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union depctl_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Maximum Packet Size
+                * IN/OUT EPn
+                * IN/OUT EP0 - 2 bits
+                *       2'b00: 64 Bytes
+                *       2'b01: 32
+                *       2'b10: 16
+                *       2'b11: 8 */
+               unsigned mps:11;
+#define DWC_DEP0CTL_MPS_64      0
+#define DWC_DEP0CTL_MPS_32      1
+#define DWC_DEP0CTL_MPS_16      2
+#define DWC_DEP0CTL_MPS_8       3
+
+               /** Next Endpoint
+                * IN EPn/IN EP0
+                * OUT EPn/OUT EP0 - reserved */
+               unsigned nextep:4;
+
+               /** USB Active Endpoint */
+               unsigned usbactep:1;
+
+               /** Endpoint DPID (INTR/Bulk IN and OUT endpoints)
+                * This field contains the PID of the packet going to
+                * be received or transmitted on this endpoint. The
+                * application should program the PID of the first
+                * packet going to be received or transmitted on this
+                * endpoint , after the endpoint is
+                * activated. Application use the SetD1PID and
+                * SetD0PID fields of this register to program either
+                * D0 or D1 PID.
+                *
+                * The encoding for this field is
+                *       - 0: D0
+                *       - 1: D1
+                */
+               unsigned dpid:1;
+
+               /** NAK Status */
+               unsigned naksts:1;
+
+               /** Endpoint Type
+                *      2'b00: Control
+                *      2'b01: Isochronous
+                *      2'b10: Bulk
+                *      2'b11: Interrupt */
+               unsigned eptype:2;
+
+               /** Snoop Mode
+                * OUT EPn/OUT EP0
+                * IN EPn/IN EP0 - reserved */
+               unsigned snp:1;
+
+               /** Stall Handshake */
+               unsigned stall:1;
+
+               /** Tx Fifo Number
+                * IN EPn/IN EP0
+                * OUT EPn/OUT EP0 - reserved */
+               unsigned txfnum:4;
+
+               /** Clear NAK */
+               unsigned cnak:1;
+               /** Set NAK */
+               unsigned snak:1;
+               /** Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
+                * Writing to this field sets the Endpoint DPID (DPID)
+                * field in this register to DATA0. Set Even
+                * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints)
+                * Writing to this field sets the Even/Odd
+                * (micro)frame (EO_FrNum) field to even (micro)
+                * frame.
+                */
+               unsigned setd0pid:1;
+               /** Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
+                * Writing to this field sets the Endpoint DPID (DPID)
+                * field in this register to DATA1 Set Odd
+                * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints)
+                * Writing to this field sets the Even/Odd
+                * (micro)frame (EO_FrNum) field to odd (micro) frame.
+                */
+               unsigned setd1pid:1;
+
+               /** Endpoint Disable */
+               unsigned epdis:1;
+               /** Endpoint Enable */
+               unsigned epena:1;
+       } b;
+} depctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP Transfer
+ * Size Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz_data {
+               /** raw register data */
+       uint32_t d32;
+               /** register bits */
+       struct {
+               /** Transfer size */
+               unsigned xfersize:19;
+/** Max packet count for EP (pow(2,10)-1) */
+#define MAX_PKT_CNT 1023
+               /** Packet Count */
+               unsigned pktcnt:10;
+               /** Multi Count - Periodic IN endpoints */
+               unsigned mc:2;
+               unsigned reserved:1;
+       } b;
+} deptsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP 0 Transfer
+ * Size Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz0_data {
+               /** raw register data */
+       uint32_t d32;
+               /** register bits */
+       struct {
+               /** Transfer size */
+               unsigned xfersize:7;
+                               /** Reserved */
+               unsigned reserved7_18:12;
+               /** Packet Count */
+               unsigned pktcnt:2;
+                               /** Reserved */
+               unsigned reserved21_28:8;
+                               /**Setup Packet Count (DOEPTSIZ0 Only) */
+               unsigned supcnt:2;
+               unsigned reserved31;
+       } b;
+} deptsiz0_data_t;
+
+/////////////////////////////////////////////////
+// DMA Descriptor Specific Structures
+//
+
+/** Buffer status definitions */
+
+#define BS_HOST_READY  0x0
+#define BS_DMA_BUSY            0x1
+#define BS_DMA_DONE            0x2
+#define BS_HOST_BUSY   0x3
+
+/** Receive/Transmit status definitions */
+
+#define RTS_SUCCESS            0x0
+#define RTS_BUFFLUSH   0x1
+#define RTS_RESERVED   0x2
+#define RTS_BUFERR             0x3
+
+/**
+ * This union represents the bit fields in the DMA Descriptor
+ * status quadlet. Read the quadlet into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it, <i>b_iso_out</i> and
+ * <i>b_iso_in</i> elements.
+ */
+typedef union dev_dma_desc_sts {
+               /** raw register data */
+       uint32_t d32;
+               /** quadlet bits */
+       struct {
+               /** Received number of bytes */
+               unsigned bytes:16;
+               /** NAK bit - only for OUT EPs */
+               unsigned nak:1;
+               unsigned reserved17_22:6;
+               /** Multiple Transfer - only for OUT EPs */
+               unsigned mtrf:1;
+               /** Setup Packet received - only for OUT EPs */
+               unsigned sr:1;
+               /** Interrupt On Complete */
+               unsigned ioc:1;
+               /** Short Packet */
+               unsigned sp:1;
+               /** Last */
+               unsigned l:1;
+               /** Receive Status */
+               unsigned sts:2;
+               /** Buffer Status */
+               unsigned bs:2;
+       } b;
+
+//#ifdef DWC_EN_ISOC
+               /** iso out quadlet bits */
+       struct {
+               /** Received number of bytes */
+               unsigned rxbytes:11;
+
+               unsigned reserved11:1;
+               /** Frame Number */
+               unsigned framenum:11;
+               /** Received ISO Data PID */
+               unsigned pid:2;
+               /** Interrupt On Complete */
+               unsigned ioc:1;
+               /** Short Packet */
+               unsigned sp:1;
+               /** Last */
+               unsigned l:1;
+               /** Receive Status */
+               unsigned rxsts:2;
+               /** Buffer Status */
+               unsigned bs:2;
+       } b_iso_out;
+
+               /** iso in quadlet bits */
+       struct {
+               /** Transmited number of bytes */
+               unsigned txbytes:12;
+               /** Frame Number */
+               unsigned framenum:11;
+               /** Transmited ISO Data PID */
+               unsigned pid:2;
+               /** Interrupt On Complete */
+               unsigned ioc:1;
+               /** Short Packet */
+               unsigned sp:1;
+               /** Last */
+               unsigned l:1;
+               /** Transmit Status */
+               unsigned txsts:2;
+               /** Buffer Status */
+               unsigned bs:2;
+       } b_iso_in;
+//#endif                                /* DWC_EN_ISOC */
+} dev_dma_desc_sts_t;
+
+/**
+ * DMA Descriptor structure
+ *
+ * DMA Descriptor structure contains two quadlets:
+ * Status quadlet and Data buffer pointer.
+ */
+typedef struct dwc_otg_dev_dma_desc {
+       /** DMA Descriptor status quadlet */
+       dev_dma_desc_sts_t status;
+       /** DMA Descriptor data buffer pointer */
+       uint32_t buf;
+} dwc_otg_dev_dma_desc_t;
+
+/**
+ * The dwc_otg_dev_if structure contains information needed to manage
+ * the DWC_otg controller acting in device mode. It represents the
+ * programming view of the device-specific aspects of the controller.
+ */
+typedef struct dwc_otg_dev_if {
+       /** Pointer to device Global registers.
+        * Device Global Registers starting at offset 800h
+        */
+       dwc_otg_device_global_regs_t *dev_global_regs;
+#define DWC_DEV_GLOBAL_REG_OFFSET 0x800
+
+       /**
+        * Device Logical IN Endpoint-Specific Registers 900h-AFCh
+        */
+       dwc_otg_dev_in_ep_regs_t *in_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_IN_EP_REG_OFFSET 0x900
+#define DWC_EP_REG_OFFSET 0x20
+
+       /** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
+       dwc_otg_dev_out_ep_regs_t *out_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00
+
+       /* Device configuration information */
+       uint8_t speed;                           /**< Device Speed      0: Unknown, 1: LS, 2:FS, 3: HS */
+       uint8_t num_in_eps;              /**< Number # of Tx EP range: 0-15 exept ep0 */
+       uint8_t num_out_eps;             /**< Number # of Rx EP range: 0-15 exept ep 0*/
+
+       /** Size of periodic FIFOs (Bytes) */
+       uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+       /** Size of Tx FIFOs (Bytes) */
+       uint16_t tx_fifo_size[MAX_TX_FIFOS];
+
+       /** Thresholding enable flags and length varaiables **/
+       uint16_t rx_thr_en;
+       uint16_t iso_tx_thr_en;
+       uint16_t non_iso_tx_thr_en;
+
+       uint16_t rx_thr_length;
+       uint16_t tx_thr_length;
+
+       /**
+        * Pointers to the DMA Descriptors for EP0 Control
+        * transfers (virtual and physical)
+        */
+
+       /** 2 descriptors for SETUP packets */
+       dwc_dma_t dma_setup_desc_addr[2];
+       dwc_otg_dev_dma_desc_t *setup_desc_addr[2];
+
+       /** Pointer to Descriptor with latest SETUP packet */
+       dwc_otg_dev_dma_desc_t *psetup;
+
+       /** Index of current SETUP handler descriptor */
+       uint32_t setup_desc_index;
+
+       /** Descriptor for Data In or Status In phases */
+       dwc_dma_t dma_in_desc_addr;
+       dwc_otg_dev_dma_desc_t *in_desc_addr;
+
+       /** Descriptor for Data Out or Status Out phases */
+       dwc_dma_t dma_out_desc_addr;
+       dwc_otg_dev_dma_desc_t *out_desc_addr;
+
+       /** Setup Packet Detected - if set clear NAK when queueing */
+       uint32_t spd;
+       /** Isoc ep pointer on which incomplete happens */
+       void *isoc_ep;
+
+} dwc_otg_dev_if_t;
+
+/////////////////////////////////////////////////
+// Host Mode Register Structures
+//
+/**
+ * The Host Global Registers structure defines the size and relative
+ * field offsets for the Host Mode Global Registers.  Host Global
+ * Registers offsets 400h-7FFh.
+*/
+typedef struct dwc_otg_host_global_regs {
+       /** Host Configuration Register.   <i>Offset: 400h</i> */
+       volatile uint32_t hcfg;
+       /** Host Frame Interval Register.       <i>Offset: 404h</i> */
+       volatile uint32_t hfir;
+       /** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */
+       volatile uint32_t hfnum;
+       /** Reserved.   <i>Offset: 40Ch</i> */
+       uint32_t reserved40C;
+       /** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */
+       volatile uint32_t hptxsts;
+       /** Host All Channels Interrupt Register. <i>Offset: 414h</i> */
+       volatile uint32_t haint;
+       /** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */
+       volatile uint32_t haintmsk;
+       /** Host Frame List Base Address Register . <i>Offset: 41Ch</i> */
+       volatile uint32_t hflbaddr;
+} dwc_otg_host_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Configuration Register.
+ * Read the register into the <i>d32</i> member then set/clear the bits using
+ * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register.
+ */
+typedef union hcfg_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** FS/LS Phy Clock Select */
+               unsigned fslspclksel:2;
+#define DWC_HCFG_30_60_MHZ 0
+#define DWC_HCFG_48_MHZ           1
+#define DWC_HCFG_6_MHZ    2
+
+               /** FS/LS Only Support */
+               unsigned fslssupp:1;
+               unsigned reserved3_6:4;
+               /** Enable 32-KHz Suspend Mode */
+               unsigned ena32khzs:1;
+               /** Resume Validation Periiod */
+               unsigned resvalid:8;
+               unsigned reserved16_22:7;
+               /** Enable Scatter/gather DMA in Host mode */
+               unsigned descdma:1;
+               /** Frame List Entries */
+               unsigned frlisten:2;
+               /** Enable Periodic Scheduling */
+               unsigned perschedena:1;
+               unsigned reserved27_30:4;
+               unsigned modechtimen:1;
+       } b;
+} hcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register. 
+ */
+typedef union hfir_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               unsigned frint:16;
+               unsigned hfirrldctrl:1;
+               unsigned reserved:15;
+       } b;
+} hfir_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register. 
+ */
+typedef union hfnum_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               unsigned frnum:16;
+#define DWC_HFNUM_MAX_FRNUM 0x3FFF
+               unsigned frrem:16;
+       } b;
+} hfnum_data_t;
+
+typedef union hptxsts_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               unsigned ptxfspcavail:16;
+               unsigned ptxqspcavail:8;
+               /** Top of the Periodic Transmit Request Queue
+                *      - bit 24 - Terminate (last entry for the selected channel)
+                *      - bits 26:25 - Token Type
+                *        - 2'b00 - Zero length
+                *        - 2'b01 - Ping
+                *        - 2'b10 - Disable
+                *      - bits 30:27 - Channel Number
+                *      - bit 31 - Odd/even microframe
+                */
+               unsigned ptxqtop_terminate:1;
+               unsigned ptxqtop_token:2;
+               unsigned ptxqtop_chnum:4;
+               unsigned ptxqtop_odd:1;
+       } b;
+} hptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Port Control and Status
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hprt0 register.
+ */
+typedef union hprt0_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned prtconnsts:1;
+               unsigned prtconndet:1;
+               unsigned prtena:1;
+               unsigned prtenchng:1;
+               unsigned prtovrcurract:1;
+               unsigned prtovrcurrchng:1;
+               unsigned prtres:1;
+               unsigned prtsusp:1;
+               unsigned prtrst:1;
+               unsigned reserved9:1;
+               unsigned prtlnsts:2;
+               unsigned prtpwr:1;
+               unsigned prttstctl:4;
+               unsigned prtspd:2;
+#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0
+#define DWC_HPRT0_PRTSPD_FULL_SPEED 1
+#define DWC_HPRT0_PRTSPD_LOW_SPEED     2
+               unsigned reserved19_31:13;
+       } b;
+} hprt0_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register. 
+ */
+typedef union haint_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned ch0:1;
+               unsigned ch1:1;
+               unsigned ch2:1;
+               unsigned ch3:1;
+               unsigned ch4:1;
+               unsigned ch5:1;
+               unsigned ch6:1;
+               unsigned ch7:1;
+               unsigned ch8:1;
+               unsigned ch9:1;
+               unsigned ch10:1;
+               unsigned ch11:1;
+               unsigned ch12:1;
+               unsigned ch13:1;
+               unsigned ch14:1;
+               unsigned ch15:1;
+               unsigned reserved:16;
+       } b;
+
+       struct {
+               unsigned chint:16;
+               unsigned reserved:16;
+       } b2;
+} haint_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register. 
+ */
+typedef union haintmsk_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned ch0:1;
+               unsigned ch1:1;
+               unsigned ch2:1;
+               unsigned ch3:1;
+               unsigned ch4:1;
+               unsigned ch5:1;
+               unsigned ch6:1;
+               unsigned ch7:1;
+               unsigned ch8:1;
+               unsigned ch9:1;
+               unsigned ch10:1;
+               unsigned ch11:1;
+               unsigned ch12:1;
+               unsigned ch13:1;
+               unsigned ch14:1;
+               unsigned ch15:1;
+               unsigned reserved:16;
+       } b;
+
+       struct {
+               unsigned chint:16;
+               unsigned reserved:16;
+       } b2;
+} haintmsk_data_t;
+
+/**
+ * Host Channel Specific Registers. <i>500h-5FCh</i>
+ */
+typedef struct dwc_otg_hc_regs {
+       /** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */
+       volatile uint32_t hcchar;
+       /** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */
+       volatile uint32_t hcsplt;
+       /** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */
+       volatile uint32_t hcint;
+       /** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */
+       volatile uint32_t hcintmsk;
+       /** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */
+       volatile uint32_t hctsiz;
+       /** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */
+       volatile uint32_t hcdma;
+       volatile uint32_t reserved;
+       /** Host Channel 0 DMA Buffer Address Register. <i>Offset: 500h + (chan_num * 20h) + 1Ch</i> */
+       volatile uint32_t hcdmab;
+} dwc_otg_hc_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+typedef union hcchar_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** Maximum packet size in bytes */
+               unsigned mps:11;
+
+               /** Endpoint number */
+               unsigned epnum:4;
+
+               /** 0: OUT, 1: IN */
+               unsigned epdir:1;
+
+               unsigned reserved:1;
+
+               /** 0: Full/high speed device, 1: Low speed device */
+               unsigned lspddev:1;
+
+               /** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+               unsigned eptype:2;
+
+               /** Packets per frame for periodic transfers. 0 is reserved. */
+               unsigned multicnt:2;
+
+               /** Device address */
+               unsigned devaddr:7;
+
+               /**
+                * Frame to transmit periodic transaction.
+                * 0: even, 1: odd
+                */
+               unsigned oddfrm:1;
+
+               /** Channel disable */
+               unsigned chdis:1;
+
+               /** Channel enable */
+               unsigned chen:1;
+       } b;
+} hcchar_data_t;
+
+typedef union hcsplt_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** Port Address */
+               unsigned prtaddr:7;
+
+               /** Hub Address */
+               unsigned hubaddr:7;
+
+               /** Transaction Position */
+               unsigned xactpos:2;
+#define DWC_HCSPLIT_XACTPOS_MID 0
+#define DWC_HCSPLIT_XACTPOS_END 1
+#define DWC_HCSPLIT_XACTPOS_BEGIN 2
+#define DWC_HCSPLIT_XACTPOS_ALL 3
+
+               /** Do Complete Split */
+               unsigned compsplt:1;
+
+               /** Reserved */
+               unsigned reserved:14;
+
+               /** Split Enble */
+               unsigned spltena:1;
+       } b;
+} hcsplt_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register. 
+ */
+typedef union hcint_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** Transfer Complete */
+               unsigned xfercomp:1;
+               /** Channel Halted */
+               unsigned chhltd:1;
+               /** AHB Error */
+               unsigned ahberr:1;
+               /** STALL Response Received */
+               unsigned stall:1;
+               /** NAK Response Received */
+               unsigned nak:1;
+               /** ACK Response Received */
+               unsigned ack:1;
+               /** NYET Response Received */
+               unsigned nyet:1;
+               /** Transaction Err */
+               unsigned xacterr:1;
+               /** Babble Error */
+               unsigned bblerr:1;
+               /** Frame Overrun */
+               unsigned frmovrun:1;
+               /** Data Toggle Error */
+               unsigned datatglerr:1;
+               /** Buffer Not Available (only for DDMA mode) */
+               unsigned bna:1;
+               /** Exessive transaction error (only for DDMA mode) */
+               unsigned xcs_xact:1;
+               /** Frame List Rollover interrupt */
+               unsigned frm_list_roll:1;
+               /** Reserved */
+               unsigned reserved14_31:18;
+       } b;
+} hcint_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcintmsk register.
+ */
+typedef union hcintmsk_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               unsigned xfercompl:1;
+               unsigned chhltd:1;
+               unsigned ahberr:1;
+               unsigned stall:1;
+               unsigned nak:1;
+               unsigned ack:1;
+               unsigned nyet:1;
+               unsigned xacterr:1;
+               unsigned bblerr:1;
+               unsigned frmovrun:1;
+               unsigned datatglerr:1;
+               unsigned bna:1;
+               unsigned xcs_xact:1;
+               unsigned frm_list_roll:1;
+               unsigned reserved14_31:18;
+       } b;
+} hcintmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+
+typedef union hctsiz_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** Total transfer size in bytes */
+               unsigned xfersize:19;
+
+               /** Data packets to transfer */
+               unsigned pktcnt:10;
+
+               /**
+                * Packet ID for next data packet
+                * 0: DATA0
+                * 1: DATA2
+                * 2: DATA1
+                * 3: MDATA (non-Control), SETUP (Control)
+                */
+               unsigned pid:2;
+#define DWC_HCTSIZ_DATA0 0
+#define DWC_HCTSIZ_DATA1 2
+#define DWC_HCTSIZ_DATA2 1
+#define DWC_HCTSIZ_MDATA 3
+#define DWC_HCTSIZ_SETUP 3
+
+               /** Do PING protocol when 1 */
+               unsigned dopng:1;
+       } b;
+
+       /** register bits */
+       struct {
+               /** Scheduling information */
+               unsigned schinfo:8;
+
+               /** Number of transfer descriptors.
+                * Max value:
+                * 64 in general,
+                * 256 only for HS isochronous endpoint.
+                */
+               unsigned ntd:8;
+
+               /** Data packets to transfer */
+               unsigned reserved16_28:13;
+
+               /**
+                * Packet ID for next data packet
+                * 0: DATA0
+                * 1: DATA2
+                * 2: DATA1
+                * 3: MDATA (non-Control)
+                */
+               unsigned pid:2;
+
+               /** Do PING protocol when 1 */
+               unsigned dopng:1;
+       } b_ddma;
+} hctsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Host DMA Address 
+ * Register used in Descriptor DMA mode.
+ */
+typedef union hcdma_data {
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved0_2:3;
+               /** Current Transfer Descriptor. Not used for ISOC */
+               unsigned ctd:8;
+               /** Start Address of Descriptor List */
+               unsigned dma_addr:21;
+       } b;
+} hcdma_data_t;
+
+/**
+ * This union represents the bit fields in the DMA Descriptor
+ * status quadlet for host mode. Read the quadlet into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union host_dma_desc_sts {
+       /** raw register data */
+       uint32_t d32;
+       /** quadlet bits */
+
+       /* for non-isochronous  */
+       struct {
+               /** Number of bytes */
+               unsigned n_bytes:17;
+               /** QTD offset to jump when Short Packet received - only for IN EPs */
+               unsigned qtd_offset:6;
+               /**
+                * Set to request the core to jump to alternate QTD if
+                * Short Packet received - only for IN EPs
+                */
+               unsigned a_qtd:1;
+                /**
+                 * Setup Packet bit. When set indicates that buffer contains
+                 * setup packet.
+                 */
+               unsigned sup:1;
+               /** Interrupt On Complete */
+               unsigned ioc:1;
+               /** End of List */
+               unsigned eol:1;
+               unsigned reserved27:1;
+               /** Rx/Tx Status */
+               unsigned sts:2;
+#define DMA_DESC_STS_PKTERR    1
+               unsigned reserved30:1;
+               /** Active Bit */
+               unsigned a:1;
+       } b;
+       /* for isochronous */
+       struct {
+               /** Number of bytes */
+               unsigned n_bytes:12;
+               unsigned reserved12_24:13;
+               /** Interrupt On Complete */
+               unsigned ioc:1;
+               unsigned reserved26_27:2;
+               /** Rx/Tx Status */
+               unsigned sts:2;
+               unsigned reserved30:1;
+               /** Active Bit */
+               unsigned a:1;
+       } b_isoc;
+} host_dma_desc_sts_t;
+
+#define        MAX_DMA_DESC_SIZE               131071
+#define MAX_DMA_DESC_NUM_GENERIC       64
+#define MAX_DMA_DESC_NUM_HS_ISOC       256
+#define MAX_FRLIST_EN_NUM              64
+/**
+ * Host-mode DMA Descriptor structure
+ *
+ * DMA Descriptor structure contains two quadlets:
+ * Status quadlet and Data buffer pointer.
+ */
+typedef struct dwc_otg_host_dma_desc {
+       /** DMA Descriptor status quadlet */
+       host_dma_desc_sts_t status;
+       /** DMA Descriptor data buffer pointer */
+       uint32_t buf;
+} dwc_otg_host_dma_desc_t;
+
+/** OTG Host Interface Structure.
+ *
+ * The OTG Host Interface Structure structure contains information
+ * needed to manage the DWC_otg controller acting in host mode. It
+ * represents the programming view of the host-specific aspects of the
+ * controller.
+ */
+typedef struct dwc_otg_host_if {
+       /** Host Global Registers starting at offset 400h.*/
+       dwc_otg_host_global_regs_t *host_global_regs;
+#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400
+
+       /** Host Port 0 Control and Status Register */
+       volatile uint32_t *hprt0;
+#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440
+
+       /** Host Channel Specific Registers at offsets 500h-5FCh. */
+       dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS];
+#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500
+#define DWC_OTG_CHAN_REGS_OFFSET 0x20
+
+       /* Host configuration information */
+       /** Number of Host Channels (range: 1-16) */
+       uint8_t num_host_channels;
+       /** Periodic EPs supported (0: no, 1: yes) */
+       uint8_t perio_eps_supported;
+       /** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
+       uint16_t perio_tx_fifo_size;
+
+} dwc_otg_host_if_t;
+
+/**
+ * This union represents the bit fields in the Power and Clock Gating Control
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union pcgcctl_data {
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** Stop Pclk */
+               unsigned stoppclk:1;
+               /** Gate Hclk */
+               unsigned gatehclk:1;
+               /** Power Clamp */
+               unsigned pwrclmp:1;
+               /** Reset Power Down Modules */
+               unsigned rstpdwnmodule:1;
+               /** Reserved */
+               unsigned reserved:1;
+               /** Enable Sleep Clock Gating (Enbl_L1Gating) */
+               unsigned enbl_sleep_gating:1;
+               /** PHY In Sleep (PhySleep) */
+               unsigned phy_in_sleep:1;
+               /** Deep Sleep*/
+               unsigned deep_sleep:1;
+               unsigned resetaftsusp:1;
+               unsigned restoremode:1;
+               unsigned enbl_extnd_hiber:1;
+               unsigned extnd_hiber_pwrclmp:1;
+               unsigned extnd_hiber_switch:1;
+               unsigned ess_reg_restored:1;
+               unsigned prt_clk_sel:2;
+               unsigned port_power:1;
+               unsigned max_xcvrselect:2;
+               unsigned max_termsel:1;
+               unsigned mac_dev_addr:7;
+               unsigned p2hd_dev_enum_spd:2;
+               unsigned p2hd_prt_spd:2;
+               unsigned if_dev_mode:1;
+       } b;
+} pcgcctl_data_t;
+
+/**
+ * This union represents the bit fields in the Global Data FIFO Software
+ * Configuration Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union gdfifocfg_data {
+       /* raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** OTG Data FIFO depth */
+               unsigned gdfifocfg:16;
+               /** Start address of EP info controller */
+               unsigned epinfobase:16;
+       } b;
+} gdfifocfg_data_t;
+
+/**
+ * This union represents the bit fields in the Global Power Down Register
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gpwrdn_data {
+       /* raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** PMU Interrupt Select */
+               unsigned pmuintsel:1;
+               /** PMU Active */
+               unsigned pmuactv:1;
+               /** Restore */
+               unsigned restore:1;
+               /** Power Down Clamp */
+               unsigned pwrdnclmp:1;
+               /** Power Down Reset */
+               unsigned pwrdnrstn:1;
+               /** Power Down Switch */
+               unsigned pwrdnswtch:1;
+               /** Disable VBUS */
+               unsigned dis_vbus:1;
+               /** Line State Change */
+               unsigned lnstschng:1;
+               /** Line state change mask */
+               unsigned lnstchng_msk:1;
+               /** Reset Detected */
+               unsigned rst_det:1;
+               /** Reset Detect mask */
+               unsigned rst_det_msk:1;
+               /** Disconnect Detected */
+               unsigned disconn_det:1;
+               /** Disconnect Detect mask */
+               unsigned disconn_det_msk:1;
+               /** Connect Detected*/
+               unsigned connect_det:1;
+               /** Connect Detected Mask*/
+               unsigned connect_det_msk:1;
+               /** SRP Detected */
+               unsigned srp_det:1;
+               /** SRP Detect mask */
+               unsigned srp_det_msk:1;
+               /** Status Change Interrupt */
+               unsigned sts_chngint:1;
+               /** Status Change Interrupt Mask */
+               unsigned sts_chngint_msk:1;
+               /** Line State */
+               unsigned linestate:2;
+               /** Indicates current mode(status of IDDIG signal) */
+               unsigned idsts:1;
+               /** B Session Valid signal status*/
+               unsigned bsessvld:1;
+               /** ADP Event Detected */
+               unsigned adp_int:1;
+               /** Multi Valued ID pin */
+               unsigned mult_val_id_bc:5;
+               /** Reserved 24_31 */
+               unsigned reserved29_31:3;
+       } b;
+} gpwrdn_data_t;
+
+#endif
diff --git a/drivers/usb/host/dwc_otg/test/Makefile b/drivers/usb/host/dwc_otg/test/Makefile
new file mode 100644
index 0000000..fc45375
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/test/Makefile
@@ -0,0 +1,16 @@
+
+PERL=/usr/bin/perl
+PL_TESTS=test_sysfs.pl test_mod_param.pl
+
+.PHONY : test
+test : perl_tests
+
+perl_tests :
+       @echo
+       @echo Running perl tests
+       @for test in $(PL_TESTS); do \
+         if $(PERL) ./$$test ; then \
+           echo "=======> $$test, PASSED" ; \
+         else echo "=======> $$test, FAILED" ; \
+         fi \
+       done
diff --git a/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm b/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm
new file mode 100644
index 0000000..233b04a
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm
@@ -0,0 +1,337 @@
+package dwc_otg_test;
+
+use strict;
+use Exporter ();
+
+use vars qw(@ISA @EXPORT
+$sysfsdir $paramdir $errors $params 
+);
+
+@ISA = qw(Exporter);
+
+#
+# Globals
+#
+$sysfsdir = "/sys/devices/lm0";
+$paramdir = "/sys/module/dwc_otg";
+$errors = 0;
+
+$params = [
+          {
+           NAME => "otg_cap",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 2
+          },
+          {
+           NAME => "dma_enable",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+          { 
+           NAME => "dma_burst_size",
+           DEFAULT => 32,
+           ENUM => [1, 4, 8, 16, 32, 64, 128, 256],
+           LOW => 1,
+           HIGH => 256
+          },
+          { 
+           NAME => "host_speed",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+          { 
+           NAME => "host_support_fs_ls_low_power",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+          { 
+           NAME => "host_ls_low_power_phy_clk",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+          { 
+           NAME => "dev_speed",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+          { 
+           NAME => "enable_dynamic_fifo",
+           DEFAULT => 1,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+          { 
+           NAME => "data_fifo_size",
+           DEFAULT => 8192,
+           ENUM => [],
+           LOW => 32,
+           HIGH => 32768
+          },
+          { 
+           NAME => "dev_rx_fifo_size",
+           DEFAULT => 1064,
+           ENUM => [],
+           LOW => 16,
+           HIGH => 32768
+          },
+          { 
+           NAME => "dev_nperio_tx_fifo_size",
+           DEFAULT => 1024,
+           ENUM => [],
+           LOW => 16,
+           HIGH => 32768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_1",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_2",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_3",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_4",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_5",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_6",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_7",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_8",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_9",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_10",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_11",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_12",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_13",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_14",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "dev_perio_tx_fifo_size_15",
+           DEFAULT => 256,
+           ENUM => [],
+           LOW => 4,
+           HIGH => 768
+          },
+          { 
+           NAME => "host_rx_fifo_size",
+           DEFAULT => 1024,
+           ENUM => [],
+           LOW => 16,
+           HIGH => 32768
+          },
+          { 
+           NAME => "host_nperio_tx_fifo_size",
+           DEFAULT => 1024,
+           ENUM => [],
+           LOW => 16,
+           HIGH => 32768
+          },
+          { 
+           NAME => "host_perio_tx_fifo_size",
+           DEFAULT => 1024,
+           ENUM => [],
+           LOW => 16,
+           HIGH => 32768
+          },
+          { 
+           NAME => "max_transfer_size",
+           DEFAULT => 65535,
+           ENUM => [],
+           LOW => 2047,
+           HIGH => 65535
+          },
+          { 
+           NAME => "max_packet_count",
+           DEFAULT => 511,
+           ENUM => [],
+           LOW => 15,
+           HIGH => 511
+          },
+          { 
+           NAME => "host_channels",
+           DEFAULT => 12,
+           ENUM => [],
+           LOW => 1,
+           HIGH => 16
+          },
+          { 
+           NAME => "dev_endpoints",
+           DEFAULT => 6,
+           ENUM => [],
+           LOW => 1,
+           HIGH => 15
+          },
+          { 
+           NAME => "phy_type",
+           DEFAULT => 1,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 2
+          },
+          { 
+           NAME => "phy_utmi_width",
+           DEFAULT => 16,
+           ENUM => [8, 16],
+           LOW => 8,
+           HIGH => 16
+          },
+          { 
+           NAME => "phy_ulpi_ddr",
+           DEFAULT => 0,
+           ENUM => [],
+           LOW => 0,
+           HIGH => 1
+          },
+         ];
+
+
+#
+#
+sub check_arch {
+  $_ = `uname -m`;
+  chomp;
+  unless (m/armv4tl/) {
+    warn "# \n# Can't execute on $_.  Run on integrator platform.\n# \n";
+    return 0;
+  }
+  return 1;
+}
+
+#
+#
+sub load_module {
+  my $params = shift;
+  print "\nRemoving Module\n";
+  system "rmmod dwc_otg";
+  print "Loading Module\n";
+  if ($params ne "") {
+    print "Module Parameters: $params\n";
+  }
+  if (system("modprobe dwc_otg $params")) { 
+    warn "Unable to load module\n";
+    return 0; 
+  }
+  return 1;
+}
+
+#
+#
+sub test_status {
+  my $arg = shift;
+
+  print "\n";
+
+  if (defined $arg) {
+    warn "WARNING: $arg\n";
+  }
+  
+  if ($errors > 0) {
+    warn "TEST FAILED with $errors errors\n";
+    return 0;
+  } else {
+    print "TEST PASSED\n";
+    return 0 if (defined $arg);
+  }
+  return 1;
+}
+
+#
+#
+@EXPORT = qw(
+$sysfsdir
+$paramdir
+$params
+$errors
+check_arch
+load_module
+test_status
+);
+
+1;
diff --git a/drivers/usb/host/dwc_otg/test/test_mod_param.pl b/drivers/usb/host/dwc_otg/test/test_mod_param.pl
new file mode 100644
index 0000000..e887dce
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/test/test_mod_param.pl
@@ -0,0 +1,133 @@
+#!/usr/bin/perl -w
+# 
+# Run this program on the integrator.
+#
+# - Tests module parameter default values.
+# - Tests setting of valid module parameter values via modprobe.
+# - Tests invalid module parameter values.
+# -----------------------------------------------------------------------------
+use strict;
+use dwc_otg_test;
+
+check_arch() or die;
+
+#
+#
+sub test {
+  my ($param,$expected) = @_;
+  my $value = get($param);
+
+  if ($value == $expected) {
+    print "$param = $value, okay\n";
+  }
+
+  else {
+    warn "ERROR: value of $param != $expected, $value\n";
+    $errors ++;
+  }
+}
+
+#
+#
+sub get {
+  my $param = shift;
+  my $tmp = `cat $paramdir/$param`;
+  chomp $tmp;
+  return $tmp;
+}
+
+#
+#
+sub test_main {
+
+  print "\nTesting Module Parameters\n";
+
+  load_module("") or die;
+
+  # Test initial values
+  print "\nTesting Default Values\n";
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{DEFAULT});
+  }
+
+  # Test low value
+  print "\nTesting Low Value\n";
+  my $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . "$_->{NAME}=$_->{LOW} ";
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{LOW});
+  }
+
+  # Test high value
+  print "\nTesting High Value\n";
+  $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . "$_->{NAME}=$_->{HIGH} ";
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{HIGH});
+  }
+
+  # Test Enum
+  print "\nTesting Enumerated\n";
+  foreach (@{$params}) {
+    if (defined $_->{ENUM}) {
+      my $value;
+      foreach $value (@{$_->{ENUM}}) {
+       $cmd_params = "$_->{NAME}=$value";
+       load_module($cmd_params) or die;
+       test ($_->{NAME}, $value);
+      }
+    }
+  }
+
+  # Test Invalid Values
+  print "\nTesting Invalid Values\n";
+  $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . sprintf "$_->{NAME}=%d ", $_->{LOW}-1;
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{DEFAULT});
+  }
+
+  $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . sprintf "$_->{NAME}=%d ", $_->{HIGH}+1;
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{DEFAULT});
+  }
+
+  print "\nTesting Enumerated\n";
+  foreach (@{$params}) {
+    if (defined $_->{ENUM}) {
+      my $value;
+      foreach $value (@{$_->{ENUM}}) {
+       $value = $value + 1;
+       $cmd_params = "$_->{NAME}=$value";
+       load_module($cmd_params) or die;
+       test ($_->{NAME}, $_->{DEFAULT});
+       $value = $value - 2;
+       $cmd_params = "$_->{NAME}=$value";
+       load_module($cmd_params) or die;
+       test ($_->{NAME}, $_->{DEFAULT});
+      }
+    }
+  }
+
+  test_status() or die;
+}
+
+test_main();
+0;
diff --git a/drivers/usb/host/dwc_otg/test/test_sysfs.pl b/drivers/usb/host/dwc_otg/test/test_sysfs.pl
new file mode 100644
index 0000000..abcf284
--- /dev/null
+++ b/drivers/usb/host/dwc_otg/test/test_sysfs.pl
@@ -0,0 +1,193 @@
+#!/usr/bin/perl -w
+# 
+# Run this program on the integrator
+# - Tests select sysfs attributes.
+# - Todo ... test more attributes, hnp/srp, buspower/bussuspend, etc.
+# -----------------------------------------------------------------------------
+use strict;
+use dwc_otg_test;
+
+check_arch() or die;
+
+#
+#
+sub test {
+  my ($attr,$expected) = @_;
+  my $string = get($attr);
+
+  if ($string eq $expected) {
+    printf("$attr = $string, okay\n");
+  }
+  else {
+    warn "ERROR: value of $attr != $expected, $string\n";
+    $errors ++;
+  }
+}
+
+#
+#
+sub set {
+  my ($reg, $value) = @_;
+  system "echo $value > $sysfsdir/$reg";
+}
+
+#
+#
+sub get {
+  my $attr = shift;
+  my $string = `cat $sysfsdir/$attr`;
+  chomp $string;
+  if ($string =~ m/\s\=\s/) {
+    my $tmp;
+    ($tmp, $string) = split /\s=\s/, $string;
+  }
+  return $string;
+}
+
+#
+#
+sub test_main {
+  print("\nTesting Sysfs Attributes\n");
+
+  load_module("") or die;
+
+  # Test initial values of regoffset/regvalue/guid/gsnpsid
+  print("\nTesting Default Values\n");
+
+  test("regoffset", "0xffffffff");
+  test("regvalue", "invalid offset");
+  test("guid", "0x12345678");  # this will fail if it has been changed
+  test("gsnpsid", "0x4f54200a");
+
+  # Test operation of regoffset/regvalue
+  print("\nTesting regoffset\n");
+  set('regoffset', '5a5a5a5a');
+  test("regoffset", "0xffffffff");
+
+  set('regoffset', '0');
+  test("regoffset", "0x00000000");
+
+  set('regoffset', '40000');
+  test("regoffset", "0x00000000");
+
+  set('regoffset', '3ffff');
+  test("regoffset", "0x0003ffff");
+
+  set('regoffset', '1');
+  test("regoffset", "0x00000001");
+
+  print("\nTesting regvalue\n");
+  set('regoffset', '3c');
+  test("regvalue", "0x12345678");
+  set('regvalue', '5a5a5a5a');
+  test("regvalue", "0x5a5a5a5a");
+  set('regvalue','a5a5a5a5');
+  test("regvalue", "0xa5a5a5a5");
+  set('guid','12345678');
+
+  # Test HNP Capable
+  print("\nTesting HNP Capable bit\n");
+  set('hnpcapable', '1');
+  test("hnpcapable", "0x1");
+  set('hnpcapable','0');
+  test("hnpcapable", "0x0");
+
+  set('regoffset','0c');
+
+  my $old = get('gusbcfg');
+  print("setting hnpcapable\n");
+  set('hnpcapable', '1');
+  test("hnpcapable", "0x1");
+  test('gusbcfg', sprintf "0x%08x", (oct ($old) | (1<<9)));
+  test('regvalue', sprintf "0x%08x", (oct ($old) | (1<<9)));
+
+  $old = get('gusbcfg');
+  print("clearing hnpcapable\n");
+  set('hnpcapable', '0');
+  test("hnpcapable", "0x0");
+  test ('gusbcfg', sprintf "0x%08x", oct ($old) & (~(1<<9)));
+  test ('regvalue', sprintf "0x%08x", oct ($old) & (~(1<<9)));
+
+  # Test SRP Capable
+  print("\nTesting SRP Capable bit\n");
+  set('srpcapable', '1');
+  test("srpcapable", "0x1");
+  set('srpcapable','0');
+  test("srpcapable", "0x0");
+
+  set('regoffset','0c');
+
+  $old = get('gusbcfg');
+  print("setting srpcapable\n");
+  set('srpcapable', '1');
+  test("srpcapable", "0x1");
+  test('gusbcfg', sprintf "0x%08x", (oct ($old) | (1<<8)));
+  test('regvalue', sprintf "0x%08x", (oct ($old) | (1<<8)));
+
+  $old = get('gusbcfg');
+  print("clearing srpcapable\n");
+  set('srpcapable', '0');
+  test("srpcapable", "0x0");
+  test('gusbcfg', sprintf "0x%08x", oct ($old) & (~(1<<8)));
+  test('regvalue', sprintf "0x%08x", oct ($old) & (~(1<<8)));
+
+  # Test GGPIO
+  print("\nTesting GGPIO\n");
+  set('ggpio','5a5a5a5a');
+  test('ggpio','0x5a5a0000');
+  set('ggpio','a5a5a5a5');
+  test('ggpio','0xa5a50000');
+  set('ggpio','11110000');
+  test('ggpio','0x11110000');
+  set('ggpio','00001111');
+  test('ggpio','0x00000000');
+
+  # Test DEVSPEED
+  print("\nTesting DEVSPEED\n");
+  set('regoffset','800');
+  $old = get('regvalue');
+  set('devspeed','0');
+  test('devspeed','0x0');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3)));
+  set('devspeed','1');
+  test('devspeed','0x1');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 1));
+  set('devspeed','2');
+  test('devspeed','0x2');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 2));
+  set('devspeed','3');
+  test('devspeed','0x3');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 3));
+  set('devspeed','4');
+  test('devspeed','0x0');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3)));
+  set('devspeed','5');
+  test('devspeed','0x1');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 1));
+
+
+  #  mode      Returns the current mode:0 for device mode1 for host mode       Read
+  #  hnp       Initiate the Host Negotiation Protocol.  Read returns the status.       Read/Write
+  #  srp       Initiate the Session Request Protocol.  Read returns the status.        Read/Write
+  #  buspower  Get or Set the Power State of the bus (0 - Off or 1 - On)       Read/Write
+  #  bussuspend        Suspend the USB bus.    Read/Write
+  #  busconnected      Get the connection status of the bus    Read
+
+  #  gotgctl   Get or set the Core Control Status Register.    Read/Write
+  ##  gusbcfg  Get or set the Core USB Configuration Register  Read/Write
+  #  grxfsiz   Get or set the Receive FIFO Size Register       Read/Write
+  #  gnptxfsiz Get or set the non-periodic Transmit Size Register      Read/Write
+  #  gpvndctl  Get or set the PHY Vendor Control Register      Read/Write
+  ##  ggpio    Get the value in the lower 16-bits of the General Purpose IO Register or Set the upper 16 bits. Read/Write
+  ##  guid     Get or set the value of the User ID Register    Read/Write
+  ##  gsnpsid  Get the value of the Synopsys ID Regester       Read
+  ##  devspeed Get or set the device speed setting in the DCFG register        Read/Write
+  #  enumspeed Gets the device enumeration Speed.      Read
+  #  hptxfsiz  Get the value of the Host Periodic Transmit FIFO        Read
+  #  hprt0     Get or Set the value in the Host Port Control and Status Register       Read/Write
+
+  test_status("TEST NYI") or die;
+}
+
+test_main();
+0;
-- 
1.9.1