MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 34 +++++++++++++++++------- MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.h | 1 + 2 files changed, 25 insertions(+), 10 deletions(-)
With some super-speed USB mass storage devices it has been observed
that a USB transaction error may occur when attempting the set the
device address during enumeration.
According the the xHCI specification (section 4.6.5) ...
"A USB Transaction ErrorCompletion Code for an Address Device Command
may be due to a Stall response from a device. Software should issue a
Disable Slot Commandfor the Device Slot then an Enable Slot Command
to recover from this error."
To fix this, retry the device slot initialization if it fails due to a
device error.
Change-Id: Id1e06057bee518768c7246c4f0b82b6fe06aef35
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 34 +++++++++++++++++-------
MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.h | 1 +
2 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
index 2e0867af7997..45423869be81 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
@@ -1684,9 +1684,11 @@ XhcPollPortStatusChange (
EFI_STATUS Status;
UINT8 Speed;
UINT8 SlotId;
+ UINT8 Retries;
USB_DEV_ROUTE RouteChart;
Status = EFI_SUCCESS;
+ Retries = XHC_INIT_DEVICE_SLOT_RETRIES;
if ((PortState->PortChangeStatus & (USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE | USB_PORT_STAT_C_OVERCURRENT | USB_PORT_STAT_C_RESET)) == 0) {
return EFI_SUCCESS;
@@ -1728,17 +1730,29 @@ XhcPollPortStatusChange (
} else if ((PortState->PortStatus & USB_PORT_STAT_SUPER_SPEED) != 0) {
Speed = EFI_USB_SPEED_SUPER;
}
- //
- // Execute Enable_Slot cmd for attached device, initialize device context and assign device address.
- //
- SlotId = XhcRouteStringToSlotId (Xhc, RouteChart);
- if ((SlotId == 0) && ((PortState->PortChangeStatus & USB_PORT_STAT_C_RESET) != 0)) {
- if (Xhc->HcCParams.Data.Csz == 0) {
- Status = XhcInitializeDeviceSlot (Xhc, ParentRouteChart, Port, RouteChart, Speed);
- } else {
- Status = XhcInitializeDeviceSlot64 (Xhc, ParentRouteChart, Port, RouteChart, Speed);
+
+ do {
+ //
+ // Execute Enable_Slot cmd for attached device, initialize device context and assign device address.
+ //
+ SlotId = XhcRouteStringToSlotId (Xhc, RouteChart);
+ if ((SlotId == 0) && ((PortState->PortChangeStatus & USB_PORT_STAT_C_RESET) != 0)) {
+ if (Xhc->HcCParams.Data.Csz == 0) {
+ Status = XhcInitializeDeviceSlot (Xhc, ParentRouteChart, Port, RouteChart, Speed);
+ } else {
+ Status = XhcInitializeDeviceSlot64 (Xhc, ParentRouteChart, Port, RouteChart, Speed);
+ }
}
- }
+
+ //
+ // According to the xHCI specification (section 4.6.5), "a USB Transaction
+ // Error Completion Code for an Address Device Command may be due to a Stall
+ // response from a device. Software should issue a Disable Slot Command for
+ // the Device Slot then an Enable Slot Command to recover from this error."
+ // Therefore, retry the device slot initialization if it fails due to a
+ // device error.
+ //
+ } while ((Status == EFI_DEVICE_ERROR) && (Retries--));
}
return Status;
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.h b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.h
index 2f1899502151..3f9cdb1c3609 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.h
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.h
@@ -11,6 +11,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#define _EFI_XHCI_SCHED_H_
#define XHC_URB_SIG SIGNATURE_32 ('U', 'S', 'B', 'R')
+#define XHC_INIT_DEVICE_SLOT_RETRIES 1
//
// Transfer types, used in URB to identify the transfer type
--
2.17.1
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On 23/10/2020 10:58, Jon Hunter wrote: > With some super-speed USB mass storage devices it has been observed > that a USB transaction error may occur when attempting the set the > device address during enumeration. > > According the the xHCI specification (section 4.6.5) ... > > "A USB Transaction ErrorCompletion Code for an Address Device Command > may be due to a Stall response from a device. Software should issue a > Disable Slot Commandfor the Device Slot then an Enable Slot Command > to recover from this error." > > To fix this, retry the device slot initialization if it fails due to a > device error. > > Change-Id: Id1e06057bee518768c7246c4f0b82b6fe06aef35 > Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Sorry I forgot to remove the Change-Id. Ignore this, I will resend. Jon -- nvpublic -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#66567): https://edk2.groups.io/g/devel/message/66567 Mute This Topic: https://groups.io/mt/77749181/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
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