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authorJulius Werner <jwerner@chromium.org>2015-08-03 14:21:07 -0700
committerAaron Durbin <adurbin@chromium.org>2015-08-14 15:14:09 +0200
commit5f9a3f7fae0154008d4dfeeb2f3a84c6a5714e52 (patch)
tree0c0049d653578966eefb3e9c234c72fc7f10526c /payloads/libpayload/drivers
parent03e8188a3f92df480934d7e5ad92bb2ce9c008ef (diff)
downloadcoreboot-5f9a3f7fae0154008d4dfeeb2f3a84c6a5714e52.tar.xz
libpayload: xhci: Carry over fixes from Chromium tree
This patch re-adds a few fixes that originally went into the chromeos-2013.04 tree. I kinda seem to have slipped them into the backport of Nico's original XHCI patch (crosreview.com/168097) instead of making a new change, which was not very clever and caused them to be forgotten in the later upstreaming wave. Changing internal XHCI error numbers is just a cosmetic change to make them uniquely identifyable in debug output. Bumping the timeout to 3 seconds is an actually important fix since we have seen mass storage devices needing that much in the past. BRANCH=None BUG=None TEST=Diffed payloads/libpayload/drivers/usb between chromeos-2013.04 and chromeos-2015.07, confirmed that no serious differences remain. Original-Change-Id: I03d865dbe536072d23374a49a0136e9f28568f8e Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/290423 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Change-Id: I5d773d3a23683fb2164916cc046f4a711b8d259e Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/11178 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'payloads/libpayload/drivers')
-rw-r--r--payloads/libpayload/drivers/usb/xhci_events.c14
-rw-r--r--payloads/libpayload/drivers/usb/xhci_private.h11
2 files changed, 13 insertions, 12 deletions
diff --git a/payloads/libpayload/drivers/usb/xhci_events.c b/payloads/libpayload/drivers/usb/xhci_events.c
index 391ebf6126..dacb5d8618 100644
--- a/payloads/libpayload/drivers/usb/xhci_events.c
+++ b/payloads/libpayload/drivers/usb/xhci_events.c
@@ -311,15 +311,15 @@ int
xhci_wait_for_transfer(xhci_t *const xhci, const int slot_id, const int ep_id)
{
xhci_spew("Waiting for transfer on ID %d EP %d\n", slot_id, ep_id);
- /* 2s for all types of transfers */ /* TODO: test, wait longer? */
- unsigned long timeout_us = 2 * 1000 * 1000;
- int cc = TIMEOUT;
+ /* 3s for all types of transfers */ /* TODO: test, wait longer? */
+ unsigned long timeout_us = 3 * 1000 * 1000;
+ int ret = TIMEOUT;
while (xhci_wait_for_event_type(xhci, TRB_EV_TRANSFER, &timeout_us)) {
if (TRB_GET(ID, xhci->er.cur) == slot_id &&
TRB_GET(EP, xhci->er.cur) == ep_id) {
- cc = -TRB_GET(CC, xhci->er.cur);
- if (cc == -CC_SUCCESS || cc == -CC_SHORT_PACKET)
- cc = TRB_GET(EVTL, xhci->er.cur);
+ ret = -TRB_GET(CC, xhci->er.cur);
+ if (ret == -CC_SUCCESS || ret == -CC_SHORT_PACKET)
+ ret = TRB_GET(EVTL, xhci->er.cur);
xhci_advance_event_ring(xhci);
break;
}
@@ -329,5 +329,5 @@ xhci_wait_for_transfer(xhci_t *const xhci, const int slot_id, const int ep_id)
if (!timeout_us)
xhci_debug("Warning: Timed out waiting for TRB_EV_TRANSFER.\n");
xhci_update_event_dq(xhci);
- return cc;
+ return ret;
}
diff --git a/payloads/libpayload/drivers/usb/xhci_private.h b/payloads/libpayload/drivers/usb/xhci_private.h
index 26f7666539..05cf195235 100644
--- a/payloads/libpayload/drivers/usb/xhci_private.h
+++ b/payloads/libpayload/drivers/usb/xhci_private.h
@@ -46,11 +46,12 @@
#define MASK(startbit, lenbit) (((1<<(lenbit))-1)<<(startbit))
-#define TIMEOUT -1
-#define CONTROLLER_ERROR -2
-#define COMMUNICATION_ERROR -3
-#define OUT_OF_MEMORY -4
-#define DRIVER_ERROR -5
+/* Make these high enough to not collide with negative XHCI CCs */
+#define TIMEOUT -65
+#define CONTROLLER_ERROR -66
+#define COMMUNICATION_ERROR -67
+#define OUT_OF_MEMORY -68
+#define DRIVER_ERROR -69
#define CC_SUCCESS 1
#define CC_TRB_ERROR 5