REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1409
For the NvmExpressPei driver, this commit will update the driver to
consume the S3StorageDeviceInitList LockBox in S3 phase. The purpose is to
perform an on-demand (partial) NVM Express device
enumeration/initialization to benefit the S3 resume performance.
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a...@intel.com>
---
MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.inf | 8 +-
MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.h | 16 +++
MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.c | 20 ++++
MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPeiS3.c | 106 ++++++++++++++++++++
4 files changed, 149 insertions(+), 1 deletion(-)
diff --git a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.inf
b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.inf
index 0666e5892b..22b703e971 100644
--- a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.inf
+++ b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.inf
@@ -40,6 +40,7 @@
NvmExpressPeiHci.h
NvmExpressPeiPassThru.c
NvmExpressPeiPassThru.h
+ NvmExpressPeiS3.c
NvmExpressPeiStorageSecurity.c
NvmExpressPeiStorageSecurity.h
@@ -54,6 +55,7 @@
BaseMemoryLib
IoLib
TimerLib
+ LockBoxLib
PeimEntryPoint
[Ppis]
@@ -64,9 +66,13 @@
gEfiPeiVirtualBlockIo2PpiGuid ## SOMETIMES_PRODUCES
gEdkiiPeiStorageSecurityCommandPpiGuid ## SOMETIMES_PRODUCES
+[Guids]
+ gS3StorageDeviceInitListGuid ## SOMETIMES_CONSUMES ##
UNDEFINED
+
[Depex]
gEfiPeiMemoryDiscoveredPpiGuid AND
- gEdkiiPeiNvmExpressHostControllerPpiGuid
+ gEdkiiPeiNvmExpressHostControllerPpiGuid AND
+ gEfiPeiMasterBootModePpiGuid
[UserExtensions.TianoCore."ExtraFiles"]
NvmExpressPeiExtra.uni
diff --git a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.h
b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.h
index 7047c4f3ff..6f01413e6d 100644
--- a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.h
+++ b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.h
@@ -332,4 +332,20 @@ NvmeBuildDevicePath (
OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
);
+/**
+ Determine if a specific NVM Express controller can be skipped for S3 phase.
+
+ @param[in] HcDevicePath Device path of the controller.
+ @param[in] HcDevicePathLength Length of the device path specified by
+ HcDevicePath.
+
+ @retval The number of ports that need to be enumerated.
+
+**/
+BOOLEAN
+NvmeS3SkipThisController (
+ IN EFI_DEVICE_PATH_PROTOCOL *HcDevicePath,
+ IN UINTN HcDevicePathLength
+ );
+
#endif
diff --git a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.c
b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.c
index 96622e6fd5..43b2dfc3e7 100644
--- a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.c
+++ b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.c
@@ -213,6 +213,7 @@ NvmExpressPeimEntry (
)
{
EFI_STATUS Status;
+ EFI_BOOT_MODE BootMode;
EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI *NvmeHcPpi;
UINT8 Controller;
UINTN MmioBase;
@@ -224,6 +225,15 @@ NvmExpressPeimEntry (
DEBUG ((DEBUG_INFO, "%a: Enters.\n", __FUNCTION__));
//
+ // Get the current boot mode.
+ //
+ Status = PeiServicesGetBootMode (&BootMode);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Fail to get the current boot mode.\n",
__FUNCTION__));
+ return Status;
+ }
+
+ //
// Locate the NVME host controller PPI
//
Status = PeiServicesLocatePpi (
@@ -279,6 +289,16 @@ NvmExpressPeimEntry (
continue;
}
+ if ((BootMode == BOOT_ON_S3_RESUME) &&
+ (NvmeS3SkipThisController (DevicePath, DevicePathLength))) {
+ DEBUG ((
+ DEBUG_ERROR, "%a: Controller %d is skipped during S3.\n",
+ __FUNCTION__, Controller
+ ));
+ Controller++;
+ continue;
+ }
+
//
// Memory allocation for controller private data
//
diff --git a/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPeiS3.c
b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPeiS3.c
new file mode 100644
index 0000000000..afcf5f6c0a
--- /dev/null
+++ b/MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPeiS3.c
@@ -0,0 +1,106 @@
+/** @file
+ The NvmExpressPei driver is used to manage non-volatile memory subsystem
+ which follows NVM Express specification at PEI phase.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions
+ of the BSD License which accompanies this distribution. The
+ full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "NvmExpressPei.h"
+
+#include <Guid/S3StorageDeviceInitList.h>
+
+#include <Library/LockBoxLib.h>
+
+/**
+ Determine if a specific NVM Express controller can be skipped for S3 phase.
+
+ @param[in] HcDevicePath Device path of the controller.
+ @param[in] HcDevicePathLength Length of the device path specified by
+ HcDevicePath.
+
+ @retval The number of ports that need to be enumerated.
+
+**/
+BOOLEAN
+NvmeS3SkipThisController (
+ IN EFI_DEVICE_PATH_PROTOCOL *HcDevicePath,
+ IN UINTN HcDevicePathLength
+ )
+{
+ EFI_STATUS Status;
+ UINT8 DummyData;
+ UINTN S3InitDevicesLength;
+ EFI_DEVICE_PATH_PROTOCOL *S3InitDevices;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
+ UINTN DevicePathInstLength;
+ BOOLEAN Skip;
+
+ //
+ // From the LockBox, get the list of device paths for devices need to be
+ // initialized in S3.
+ //
+ S3InitDevices = NULL;
+ S3InitDevicesLength = sizeof (DummyData);
+ Skip = TRUE;
+ Status = RestoreLockBox (&gS3StorageDeviceInitListGuid, &DummyData,
&S3InitDevicesLength);
+ if (Status != EFI_BUFFER_TOO_SMALL) {
+ return Skip;
+ } else {
+ S3InitDevices = AllocatePool (S3InitDevicesLength);
+ if (S3InitDevices == NULL) {
+ return Skip;
+ }
+
+ Status = RestoreLockBox (&gS3StorageDeviceInitListGuid, S3InitDevices,
&S3InitDevicesLength);
+ if (EFI_ERROR (Status)) {
+ return Skip;
+ }
+ }
+
+ if (S3InitDevices == NULL) {
+ return Skip;
+ }
+
+ //
+ // Only need to initialize the controllers that exist in the device list.
+ //
+ do {
+ //
+ // Fetch the next device path instance.
+ //
+ DevicePathInst = GetNextDevicePathInstance (&S3InitDevices,
&DevicePathInstLength);
+ if (DevicePathInst == NULL) {
+ break;
+ }
+
+ if ((HcDevicePathLength >= DevicePathInstLength) ||
+ (HcDevicePathLength <= sizeof (EFI_DEVICE_PATH_PROTOCOL))) {
+ continue;
+ }
+
+ //
+ // Compare the device paths to determine if the device is managed by this
+ // controller.
+ //
+ if (CompareMem (
+ DevicePathInst,
+ HcDevicePath,
+ HcDevicePathLength - sizeof (EFI_DEVICE_PATH_PROTOCOL)
+ ) == 0) {
+ Skip = FALSE;
+ break;
+ }
+ } while (S3InitDevices != NULL);
+
+ return Skip;
+}
--
2.12.0.windows.1
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