add some ohci workarounds to make ohci work

SVN-Revision: 33323

1 files changed, 64 insertions, 0 deletions

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
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;
+ 	}