MdeModulePkg/NvmExpressPei: Consume S3StorageDeviceInitList LockBox
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>
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@@ -213,6 +213,7 @@ NvmExpressPeimEntry (
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)
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{
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EFI_STATUS Status;
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EFI_BOOT_MODE BootMode;
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EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI *NvmeHcPpi;
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UINT8 Controller;
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UINTN MmioBase;
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@@ -223,6 +224,15 @@ NvmExpressPeimEntry (
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DEBUG ((DEBUG_INFO, "%a: Enters.\n", __FUNCTION__));
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//
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// Get the current boot mode.
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//
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Status = PeiServicesGetBootMode (&BootMode);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "%a: Fail to get the current boot mode.\n", __FUNCTION__));
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return Status;
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}
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//
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// Locate the NVME host controller PPI
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//
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@@ -279,6 +289,22 @@ NvmExpressPeimEntry (
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continue;
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}
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//
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// For S3 resume performance consideration, not all NVM Express controllers
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// will be initialized. The driver consumes the content within
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// S3StorageDeviceInitList LockBox to see if a controller will be skipped
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// during S3 resume.
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//
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if ((BootMode == BOOT_ON_S3_RESUME) &&
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(NvmeS3SkipThisController (DevicePath, DevicePathLength))) {
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DEBUG ((
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DEBUG_ERROR, "%a: Controller %d is skipped during S3.\n",
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__FUNCTION__, Controller
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));
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Controller++;
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continue;
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}
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//
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// Memory allocation for controller private data
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//
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