--- /dev/null
+/*****************************************************************************
+ ** FILE NAME : ifxhcd_queue.c
+ ** PROJECT : IFX USB sub-system V3
+ ** MODULES : IFX USB sub-system Host and Device driver
+ ** SRC VERSION : 1.0
+ ** DATE : 1/Jan/2009
+ ** AUTHOR : Chen, Howard
+ ** DESCRIPTION : This file contains the functions to manage Queue Heads and Queue
+ ** Transfer Descriptors.
+ *****************************************************************************/
+
+/*!
+ \file ifxhcd_queue.c
+ \ingroup IFXUSB_DRIVER_V3
+ \brief This file contains the functions to manage Queue Heads and Queue
+ Transfer Descriptors.
+*/
+#include <linux/version.h>
+#include "ifxusb_version.h"
+
+#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 "ifxusb_plat.h"
+#include "ifxusb_regs.h"
+#include "ifxusb_cif.h"
+#include "ifxhcd.h"
+
+#ifdef __EPQD_DESTROY_TIMEOUT__
+ #define epqh_self_destroy_timeout 5
+ static void eqph_destroy_func(unsigned long _ptr)
+ {
+ ifxhcd_epqh_t *epqh=(ifxhcd_epqh_t *)_ptr;
+ if(epqh)
+ {
+ ifxhcd_epqh_free (epqh);
+ }
+ }
+#endif
+
+#define SCHEDULE_SLOP 10
+
+/*!
+ \brief This function allocates and initializes a EPQH.
+
+ \param _ifxhcd The HCD state structure for the USB Host controller.
+ \param[in] _urb Holds the information about the device/endpoint that we need
+ to initialize the EPQH.
+
+ \return Returns pointer to the newly allocated EPQH, or NULL on error.
+ */
+ifxhcd_epqh_t *ifxhcd_epqh_create (ifxhcd_hcd_t *_ifxhcd, struct urb *_urb)
+{
+ ifxhcd_epqh_t *epqh;
+
+ hprt0_data_t hprt0;
+ struct usb_host_endpoint *sysep = ifxhcd_urb_to_endpoint(_urb);
+
+ /* Allocate memory */
+// epqh=(ifxhcd_epqh_t *) kmalloc (sizeof(ifxhcd_epqh_t), GFP_KERNEL);
+ epqh=(ifxhcd_epqh_t *) kmalloc (sizeof(ifxhcd_epqh_t), GFP_ATOMIC);
+
+ if(epqh == NULL)
+ return NULL;
+
+ memset (epqh, 0, sizeof (ifxhcd_epqh_t));
+
+ epqh->sysep=sysep;
+
+ /* Initialize EPQH */
+ switch (usb_pipetype(_urb->pipe))
+ {
+ case PIPE_CONTROL : epqh->ep_type = IFXUSB_EP_TYPE_CTRL; break;
+ case PIPE_BULK : epqh->ep_type = IFXUSB_EP_TYPE_BULK; break;
+ case PIPE_ISOCHRONOUS: epqh->ep_type = IFXUSB_EP_TYPE_ISOC; break;
+ case PIPE_INTERRUPT : epqh->ep_type = IFXUSB_EP_TYPE_INTR; break;
+ }
+
+ //epqh->data_toggle = IFXUSB_HC_PID_DATA0;
+
+ epqh->mps = usb_maxpacket(_urb->dev, _urb->pipe, !(usb_pipein(_urb->pipe)));
+
+ hprt0.d32 = ifxusb_read_hprt0 (&_ifxhcd->core_if);
+
+ INIT_LIST_HEAD(&epqh->urbd_list);
+ INIT_LIST_HEAD(&epqh->epqh_list_entry);
+ epqh->hc = NULL;
+
+ epqh->dump_buf = ifxusb_alloc_buf(epqh->mps, 0);
+
+ /* FS/LS Enpoint on HS Hub
+ * NOT virtual root hub */
+ epqh->need_split = 0;
+ epqh->pkt_count_limit=0;
+ if(epqh->ep_type == IFXUSB_EP_TYPE_BULK && !(usb_pipein(_urb->pipe)) )
+ epqh->pkt_count_limit=4;
+ if (hprt0.b.prtspd == IFXUSB_HPRT0_PRTSPD_HIGH_SPEED &&
+ ((_urb->dev->speed == USB_SPEED_LOW) ||
+ (_urb->dev->speed == USB_SPEED_FULL)) &&
+ (_urb->dev->tt) && (_urb->dev->tt->hub->devnum != 1))
+ {
+ IFX_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n",
+ usb_pipeendpoint(_urb->pipe), _urb->dev->tt->hub->devnum,
+ _urb->dev->ttport);
+ epqh->need_split = 1;
+ epqh->pkt_count_limit=1;
+ }
+
+ if (epqh->ep_type == IFXUSB_EP_TYPE_INTR ||
+ epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
+ {
+ /* Compute scheduling parameters once and save them. */
+ epqh->interval = _urb->interval;
+ if(epqh->need_split)
+ epqh->interval *= 8;
+ }
+
+ epqh->period_counter=0;
+ epqh->is_active=0;
+
+ #ifdef __EPQD_DESTROY_TIMEOUT__
+ /* Start a timer for this transfer. */
+ init_timer(&epqh->destroy_timer);
+ epqh->destroy_timer.function = eqph_destroy_func;
+ epqh->destroy_timer.data = (unsigned long)(epqh);
+ #endif
+
+ #ifdef __DEBUG__
+ IFX_DEBUGPL(DBG_HCD , "IFXUSB HCD EPQH Initialized\n");
+ IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - epqh = %p\n", epqh);
+ IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Device Address = %d EP %d, %s\n",
+ _urb->dev->devnum,
+ usb_pipeendpoint(_urb->pipe),
+ usb_pipein(_urb->pipe) == USB_DIR_IN ? "IN" : "OUT");
+ IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Speed = %s\n",
+ ({ char *speed; switch (_urb->dev->speed) {
+ case USB_SPEED_LOW: speed = "low" ; break;
+ case USB_SPEED_FULL: speed = "full"; break;
+ case USB_SPEED_HIGH: speed = "high"; break;
+ default: speed = "?"; break;
+ }; speed;}));
+ IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Type = %s\n",
+ ({
+ char *type; switch (epqh->ep_type)
+ {
+ case IFXUSB_EP_TYPE_ISOC: type = "isochronous"; break;
+ case IFXUSB_EP_TYPE_INTR: type = "interrupt" ; break;
+ case IFXUSB_EP_TYPE_CTRL: type = "control" ; break;
+ case IFXUSB_EP_TYPE_BULK: type = "bulk" ; break;
+ default: type = "?"; break;
+ };
+ type;
+ }));
+ if (epqh->ep_type == IFXUSB_EP_TYPE_INTR)
+ IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - interval = %d\n", epqh->interval);
+ #endif
+
+ return epqh;
+}
+
+
+
+
+
+
+/*!
+ \brief Free the EPQH. EPQH should already be removed from a list.
+ URBD list should already be empty if called from URB Dequeue.
+
+ \param[in] _epqh The EPQH to free.
+ */
+void ifxhcd_epqh_free (ifxhcd_epqh_t *_epqh)
+{
+ unsigned long flags;
+
+ if(_epqh->sysep) _epqh->sysep->hcpriv=NULL;
+ _epqh->sysep=NULL;
+
+ if(!_epqh)
+ return;
+
+ /* Free each QTD in the QTD list */
+ local_irq_save (flags);
+ if (!list_empty(&_epqh->urbd_list))
+ IFX_WARN("%s() invalid epqh state\n",__func__);
+
+ #if defined(__UNALIGNED_BUFFER_ADJ__)
+ if(_epqh->aligned_buf)
+ ifxusb_free_buf(_epqh->aligned_buf);
+ if(_epqh->aligned_setup)
+ ifxusb_free_buf(_epqh->aligned_setup);
+ #endif
+
+ if (!list_empty(&_epqh->epqh_list_entry))
+ list_del_init(&_epqh->epqh_list_entry);
+
+ #ifdef __EPQD_DESTROY_TIMEOUT__
+ del_timer(&_epqh->destroy_timer);
+ #endif
+ if(_epqh->dump_buf)
+ ifxusb_free_buf(_epqh->dump_buf);
+ _epqh->dump_buf=0;
+
+
+ kfree (_epqh);
+ local_irq_restore (flags);
+}
+
+/*!
+ \brief This function adds a EPQH to
+
+ \return 0 if successful, negative error code otherwise.
+ */
+void ifxhcd_epqh_ready(ifxhcd_hcd_t *_ifxhcd, ifxhcd_epqh_t *_epqh)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ if (list_empty(&_epqh->epqh_list_entry))
+ {
+ #ifdef __EN_ISOC__
+ if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
+ list_add_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_ready);
+ else
+ #endif
+ if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
+ list_add_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_ready);
+ else
+ list_add_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_ready);
+ _epqh->is_active=0;
+ }
+ else if(!_epqh->is_active)
+ {
+ #ifdef __EN_ISOC__
+ if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_ready);
+ else
+ #endif
+ if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_ready);
+ else
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_ready);
+ }
+ #ifdef __EPQD_DESTROY_TIMEOUT__
+ del_timer(&_epqh->destroy_timer);
+ #endif
+ local_irq_restore(flags);
+}
+
+void ifxhcd_epqh_active(ifxhcd_hcd_t *_ifxhcd, ifxhcd_epqh_t *_epqh)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ if (list_empty(&_epqh->epqh_list_entry))
+ IFX_WARN("%s() invalid epqh state\n",__func__);
+ #ifdef __EN_ISOC__
+ if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_active);
+ else
+ #endif
+ if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_active);
+ else
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_active);
+ _epqh->is_active=1;
+ #ifdef __EPQD_DESTROY_TIMEOUT__
+ del_timer(&_epqh->destroy_timer);
+ #endif
+ local_irq_restore(flags);
+}
+
+void ifxhcd_epqh_idle(ifxhcd_hcd_t *_ifxhcd, ifxhcd_epqh_t *_epqh)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+
+ if (list_empty(&_epqh->urbd_list))
+ {
+ if(_epqh->ep_type == IFXUSB_EP_TYPE_ISOC || _epqh->ep_type == IFXUSB_EP_TYPE_INTR)
+ {
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_stdby);
+ }
+ else
+ {
+ list_del_init(&_epqh->epqh_list_entry);
+ #ifdef __EPQD_DESTROY_TIMEOUT__
+ del_timer(&_epqh->destroy_timer);
+ _epqh->destroy_timer.expires = jiffies + (HZ*epqh_self_destroy_timeout);
+ add_timer(&_epqh->destroy_timer );
+ #endif
+ }
+ }
+ else
+ {
+ #ifdef __EN_ISOC__
+ if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_ready);
+ else
+ #endif
+ if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_ready);
+ else
+ list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_ready);
+ }
+ _epqh->is_active=0;
+ local_irq_restore(flags);
+}
+
+
+void ifxhcd_epqh_idle_periodic(ifxhcd_epqh_t *_epqh)
+{
+ unsigned long flags;
+ if(_epqh->ep_type != IFXUSB_EP_TYPE_ISOC && _epqh->ep_type != IFXUSB_EP_TYPE_INTR)
+ return;
+
+ local_irq_save(flags);
+
+ if (list_empty(&_epqh->epqh_list_entry))
+ IFX_WARN("%s() invalid epqh state\n",__func__);
+ if (!list_empty(&_epqh->urbd_list))
+ IFX_WARN("%s() invalid epqh state(not empty)\n",__func__);
+
+ _epqh->is_active=0;
+ list_del_init(&_epqh->epqh_list_entry);
+ #ifdef __EPQD_DESTROY_TIMEOUT__
+ del_timer(&_epqh->destroy_timer);
+ _epqh->destroy_timer.expires = jiffies + (HZ*epqh_self_destroy_timeout);
+ add_timer(&_epqh->destroy_timer );
+ #endif
+
+ local_irq_restore(flags);
+}
+
+
+int ifxhcd_urbd_create (ifxhcd_hcd_t *_ifxhcd,struct urb *_urb)
+{
+ ifxhcd_urbd_t *urbd;
+ struct usb_host_endpoint *sysep;
+ ifxhcd_epqh_t *epqh;
+ unsigned long flags;
+ /* == AVM/WK 20100714 retval correctly initialized ==*/
+ int retval = -ENOMEM;
+
+ /*== AVM/BC 20100630 - Spinlock ==*/
+ //local_irq_save(flags);
+ SPIN_LOCK_IRQSAVE(&_ifxhcd->lock, flags);
+
+// urbd = (ifxhcd_urbd_t *) kmalloc (sizeof(ifxhcd_urbd_t), GFP_KERNEL);
+ urbd = (ifxhcd_urbd_t *) kmalloc (sizeof(ifxhcd_urbd_t), GFP_ATOMIC);
+ if (urbd != NULL) /* Initializes a QTD structure.*/
+ {
+ retval = 0;
+ memset (urbd, 0, sizeof (ifxhcd_urbd_t));
+
+ sysep = ifxhcd_urb_to_endpoint(_urb);
+ epqh = (ifxhcd_epqh_t *)sysep->hcpriv;
+ if (epqh == NULL)
+ {
+ epqh = ifxhcd_epqh_create (_ifxhcd, _urb);
+ if (epqh == NULL)
+ {
+ retval = -ENOSPC;
+ kfree(urbd);
+ //local_irq_restore (flags);
+ SPIN_UNLOCK_IRQRESTORE(&_ifxhcd->lock, flags);
+ return retval;
+ }
+ sysep->hcpriv = epqh;
+ }
+
+ INIT_LIST_HEAD(&urbd->urbd_list_entry);
+
+ /*== AVM/BC 20100630 - 2.6.28 needs HCD link/unlink URBs ==*/
+ retval = usb_hcd_link_urb_to_ep(ifxhcd_to_syshcd(_ifxhcd), _urb);
+
+ if (unlikely(retval)){
+ kfree(urbd);
+ kfree(epqh);
+ SPIN_UNLOCK_IRQRESTORE(&_ifxhcd->lock, flags);
+ return retval;
+ }
+
+ list_add_tail(&urbd->urbd_list_entry, &epqh->urbd_list);
+ urbd->urb = _urb;
+ _urb->hcpriv = urbd;
+
+ urbd->epqh=epqh;
+ urbd->is_in=usb_pipein(_urb->pipe) ? 1 : 0;;
+
+ urbd->xfer_len=_urb->transfer_buffer_length;
+#define URB_NO_SETUP_DMA_MAP 0
+
+ if(urbd->xfer_len>0)
+ {
+ if(_urb->transfer_flags && URB_NO_TRANSFER_DMA_MAP)
+ urbd->xfer_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->transfer_dma));
+ else
+ urbd->xfer_buff = (uint8_t *) _urb->transfer_buffer;
+ }
+ if(epqh->ep_type == IFXUSB_EP_TYPE_CTRL)
+ {
+ if(_urb->transfer_flags && URB_NO_SETUP_DMA_MAP)
+ urbd->setup_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->setup_dma));
+ else
+ urbd->setup_buff = (uint8_t *) _urb->setup_packet;
+ }
+ }
+ //local_irq_restore (flags);
+ SPIN_UNLOCK_IRQRESTORE(&_ifxhcd->lock, flags);
+ return retval;
+}
+
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