sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MdeModulePkg/NvmExpressPei: Consume S3StorageDeviceInitList LockBox

Browse Source 
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.wang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
This commit is contained in:
Hao Wu
2019-01-21 14:14:19 +08:00
parent 2e15b750c4
commit 05fd2a9268
5 changed files with 236 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
MdeModulePkg/Bus/Pci/NvmExpressPei/NvmExpressPei.h
View File

@@ -266,6 +266,26 @@ NvmePeimEndOfPei (
IN VOID *Ppi
);
/**
Get the size of the current device path instance.
@param[in] DevicePath A pointer to the EFI_DEVICE_PATH_PROTOCOL
structure.
@param[out] InstanceSize The size of the current device path instance.
@param[out] EntireDevicePathEnd Indicate whether the instance is the last
one in the device path strucure.
@retval EFI_SUCCESS The size of the current device path instance is fetched.
@retval Others Fails to get the size of the current device path instance.
**/
EFI_STATUS
GetDevicePathInstanceSize (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINTN *InstanceSize,
OUT BOOLEAN *EntireDevicePathEnd
);
/**
Check the validity of the device path of a NVM Express host controller.
@@ -309,4 +329,20 @@ 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