From: Abner Chang <abner.ch...@amd.com>
In V3: Add AMD copyright.
In V2: Remove the signed-off-by: Abner Chang.
Initialize XHCI DCI slot's context entries value.
Signed-off-by: Kuei-Hung Lin <kuei-hung....@amd.com>
Cc: Hao A Wu <hao.a...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Garrett Kirkendall <garrett.kirkend...@amd.com>
Cc: Abner Chang <abner.ch...@amd.com>
---
MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 7 +++++++
MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c | 7 +++++++
2 files changed, 14 insertions(+)
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
index 13b0400e83d..f08722905f3 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
@@ -4,6 +4,7 @@
Copyright (c) 2011 - 2020, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.<BR>
+Copyright (C) 2022 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -2807,6 +2808,9 @@ XhcInitializeEndpointContext (
MaxDci = 0;
NumEp = IfDesc->NumEndpoints;
+ if (NumEp == 0) {
+ MaxDci = 1;
+ }
EpDesc = (USB_ENDPOINT_DESCRIPTOR *)(IfDesc + 1);
for (EpIndex = 0; EpIndex < NumEp; EpIndex++) {
@@ -3006,6 +3010,9 @@ XhcInitializeEndpointContext64 (
MaxDci = 0;
NumEp = IfDesc->NumEndpoints;
+ if (NumEp == 0) {
+ MaxDci = 1;
+ }
EpDesc = (USB_ENDPOINT_DESCRIPTOR *)(IfDesc + 1);
for (EpIndex = 0; EpIndex < NumEp; EpIndex++) {
diff --git a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
index cc597a43717..8400c90f7ad 100644
--- a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
+++ b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
@@ -3,6 +3,7 @@ PEIM to produce gPeiUsb2HostControllerPpiGuid based on
gPeiUsbControllerPpiGuid
which is used to enable recovery function from USB Drivers.
Copyright (c) 2014 - 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (C) 2022 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -1752,6 +1753,9 @@ XhcPeiSetConfigCmd (
}
NumEp = IfDesc->NumEndpoints;
+ if ((NumEp == 0) && (MaxDci == 0)) {
+ MaxDci = 1;
+ }
EpDesc = (USB_ENDPOINT_DESCRIPTOR *)(IfDesc + 1);
for (EpIndex = 0; EpIndex < NumEp; EpIndex++) {
@@ -1974,6 +1978,9 @@ XhcPeiSetConfigCmd64 (
}
NumEp = IfDesc->NumEndpoints;
+ if ((NumEp == 0) && (MaxDci == 0)) {
+ MaxDci = 1;
+ }
EpDesc = (USB_ENDPOINT_DESCRIPTOR *)(IfDesc + 1);
for (EpIndex = 0; EpIndex < NumEp; EpIndex++) {
--
2.37.1.windows.1
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