[mcs814x] add some ohci workarounds to make ohci work

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33323 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/mcs814x/patches-3.3/013-ohci_workarounds.patch b/target/linux/mcs814x/patches-3.3/013-ohci_workarounds.patch
new file mode 100644 (file)
index 0000000..9b905a7
--- /dev/null
+++ b/target/linux/mcs814x/patches-3.3/013-ohci_workarounds.patch
@@ -0,0 +1,64 @@
+--- a/drivers/usb/host/ohci.h
++++ b/drivers/usb/host/ohci.h
+@@ -114,7 +114,7 @@ struct td {
+       /* PSW is only for ISO.  Only 1 PSW entry is used, but on
+        * big-endian PPC hardware that's the second entry.
+        */
+-#define MAXPSW        2
++#define MAXPSW        8
+       __hc16          hwPSW [MAXPSW];
+ 
+       /* rest are purely for the driver's use */
+--- a/drivers/usb/host/ohci-hcd.c
++++ b/drivers/usb/host/ohci-hcd.c
+@@ -497,6 +497,7 @@ static int ohci_init (struct ohci_hcd *o
+ {
+       int ret;
+       struct usb_hcd *hcd = ohci_to_hcd(ohci);
++      u32 hcca_area;
+ 
+       if (distrust_firmware)
+               ohci->flags |= OHCI_QUIRK_HUB_POWER;
+@@ -550,11 +551,13 @@ static int ohci_init (struct ohci_hcd *o
+       if (ohci->hcca)
+               return 0;
+ 
+-      ohci->hcca = dma_alloc_coherent (hcd->self.controller,
+-                      sizeof *ohci->hcca, &ohci->hcca_dma, 0);
++      hcca_area = ohci_readl(ohci, &ohci->regs->hcca);
++      ohci->hcca = ioremap_nocache(hcca_area, sizeof *ohci->hcca);
+       if (!ohci->hcca)
+               return -ENOMEM;
+ 
++      ohci->hcca_dma = hcca_area;
++
+       if ((ret = ohci_mem_init (ohci)) < 0)
+               ohci_stop (hcd);
+       else {
+@@ -572,6 +575,7 @@ static int ohci_init (struct ohci_hcd *o
+  */
+ static int ohci_run (struct ohci_hcd *ohci)
+ {
++      int                     i = 0;
+       u32                     mask, val;
+       int                     first = ohci->fminterval == 0;
+       struct usb_hcd          *hcd = ohci_to_hcd(ohci);
+@@ -622,6 +626,8 @@ static int ohci_run (struct ohci_hcd *oh
+       msleep(val);
+ 
+       memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
++      for (i = 0; i < NUM_INTS; i++)
++              ohci->hcca->int_table[i] = 0;
+ 
+       /* 2msec timelimit here means no irqs/preempt */
+       spin_lock_irq (&ohci->lock);
+@@ -909,9 +915,6 @@ static void ohci_stop (struct usb_hcd *h
+       remove_debug_files (ohci);
+       ohci_mem_cleanup (ohci);
+       if (ohci->hcca) {
+-              dma_free_coherent (hcd->self.controller,
+-                              sizeof *ohci->hcca,
+-                              ohci->hcca, ohci->hcca_dma);
+               ohci->hcca = NULL;
+               ohci->hcca_dma = 0;
+       }