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libpayload/usb: Increase USB request timeout to 5 s

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Increase the timeout for USB requests to 5 seconds for all USB host
controllers.

Prior to this fix, the xCHI driver was detecting false timeouts during
SET ADDRESS requests when nested downstream hubs were connected to the
xHCI root hub.

BUG=b:124730179
BRANCH=sarien
TEST=Build libpayload and depthcharge on sarien/arcada.
TEST=Without change replicate USB set address timeouts in depthcharge
when dock and 4K monitor connected (which includes a total of 4 USB
hubs).  With timeout fix, depthcharge boots OS with no USB errors and
the same USB topology.  Note that this tests xHCI operation only.

Change-Id: I53e3e67d893420e7c9e8b52c47dd0edb979e5468
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33671
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Keith Short
2019-06-21 16:39:59 -06:00
committed by Duncan Laurie
parent 9d0b7b9021
commit bf2c693f89
6 changed files with 47 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
payloads/libpayload/drivers/usb/ohci.c
View File

@@ -292,14 +292,13 @@ ohci_stop (hci_t *controller)
OHCI_INST (controller)->opreg->HcControl &= ~PeriodicListEnable;
}
#define OHCI_SLEEP_TIME_US 1000
static int
wait_for_ed(usbdev_t *dev, ed_t *head, int pages)
{
/* wait for results */
/* TOTEST: how long to wait?
* give 2s per TD (2 pages) plus another 2s for now
*/
int timeout = pages*1000 + 2000;
int timeout = USB_MAX_PROCESSING_TIME_US / OHCI_SLEEP_TIME_US;
while (((head->head_pointer & ~3) != head->tail_pointer) &&
!(head->head_pointer & 1) &&
((((td_t*)phys_to_virt(head->head_pointer & ~3))->config
@@ -315,9 +314,9 @@ wait_for_ed(usbdev_t *dev, ed_t *head, int pages)
((td_t*)phys_to_virt(head->head_pointer & ~3))->next_td,
head->tail_pointer,
(((td_t*)phys_to_virt(head->head_pointer & ~3))->config & TD_CC_MASK) >> TD_CC_SHIFT);
mdelay(1);
udelay(OHCI_SLEEP_TIME_US);
}
if (timeout < 0)
if (timeout <= 0)
usb_debug("Error: ohci: endpoint "
"descriptor processing timed out.\n");
/* Clear the done queue. */