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Fix EHCI usb submit timeout and unify with OHCI 

Changed both to use a common timeout for URB submission, since they were using
different values and EHCI's was too short.

Also fixed EHCI to actually check if urb submission succeeded, rather than
silently continuing into the weeds.

Change-Id: I7f71499ffaa05187d8e5618db2419e1606007b82

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2011-02-07 14:42:16 -08:00 committed by Remy Bohmer
parent efb063390d
commit 96820a3587
3 changed files with 16 additions and 7 deletions
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10
drivers/usb/host/ehci-hcd.c
View File

@ -319,6 +319,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
uint32_t endpt, token, usbsts;
uint32_t c, toggle;
uint32_t cmd;
int timeout;
int ret = 0;
debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
@ -447,6 +448,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
/* Wait for TDs to be processed. */
ts = get_timer(0);
vtd = td;
timeout = USB_TIMEOUT_MS(pipe);
do {
/* Invalidate dcache */
ehci_invalidate_dcache(&qh_list);
@ -454,7 +456,13 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
if (!(token & 0x80))
break;
WATCHDOG_RESET();
} while (get_timer(ts) < CONFIG_SYS_HZ);
} while (get_timer(ts) < timeout);
/* Check that the TD processing happened */
if (token & 0x80) {
printf("EHCI timed out on TD - token=%#x\n", token);
goto fail;
}
/* Disable async schedule. */
cmd = ehci_readl(&hcor->or_usbcmd);

7
drivers/usb/host/ohci-hcd.c
View File

@ -1524,12 +1524,7 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
/* ohci_dump_status(&gohci); */
#endif
/* allow more time for a BULK device to react - some are slow */
#define BULK_TO 5000 /* timeout in milliseconds */
if (usb_pipebulk(pipe))
timeout = BULK_TO;
else
timeout = 1000;
timeout = USB_TIMEOUT_MS(pipe);
/* wait for it to complete */
for (;;) {

6
include/usb.h
View File

@ -42,6 +42,12 @@
#define USB_CNTL_TIMEOUT 100 /* 100ms timeout */
/*
* This is the timeout to allow for submitting an urb in ms. We allow more
* time for a BULK device to react - some are slow.
*/
#define USB_TIMEOUT_MS(pipe) (usb_pipebulk(pipe) ? 5000 : 100)
/* device request (setup) */
struct devrequest {
unsigned char requesttype;