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/** @file
This module update S3 Suspend Performance Record in ACPI Firmware Performance Data Table.
This module register report status code listener to collect performance data
for S3 Suspend Performance Record.
Copyright (c) 2011, 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 <PiSmm.h>
#include <IndustryStandard/Acpi50.h>
#include <Protocol/SmmReportStatusCodeHandler.h>
#include <Guid/FirmwarePerformance.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/TimerLib.h>
#include <Library/LockBoxLib.h>
#include <Library/PcdLib.h>
EFI_SMM_RSC_HANDLER_PROTOCOL *mRscHandlerProtocol = NULL;
UINT64 mSuspendStartTime = 0;
BOOLEAN mS3SuspendLockBoxSaved = FALSE;
/**
Report status code listener for SMM. This is used to record the performance
data for S3 Suspend Start and S3 Suspend End in FPDT.
@param[in] CodeType Indicates the type of status code being reported.
@param[in] Value Describes the current status of a hardware or software entity.
This included information about the class and subclass that is used to
classify the entity as well as an operation.
@param[in] Instance The enumeration of a hardware or software entity within
the system. Valid instance numbers start with 1.
@param[in] CallerId This optional parameter may be used to identify the caller.
This parameter allows the status code driver to apply different rules to
different callers.
@param[in] Data This optional parameter may be used to pass additional data.
@retval EFI_SUCCESS Status code is what we expected.
@retval EFI_UNSUPPORTED Status code not supported.
**/
EFI_STATUS
EFIAPI
FpdtStatusCodeListenerSmm (
IN EFI_STATUS_CODE_TYPE CodeType,
IN EFI_STATUS_CODE_VALUE Value,
IN UINT32 Instance,
IN EFI_GUID *CallerId,
IN EFI_STATUS_CODE_DATA *Data
)
{
EFI_STATUS Status;
UINT64 CurrentTime;
EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD S3SuspendRecord;
//
// Check whether status code is what we are interested in.
//
if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) != EFI_PROGRESS_CODE) {
return EFI_UNSUPPORTED;
}
if ((Value != PcdGet32 (PcdProgressCodeS3SuspendStart)) &&
(Value != PcdGet32 (PcdProgressCodeS3SuspendEnd))) {
return EFI_UNSUPPORTED;
}
//
// Retrieve current time.
//
CurrentTime = GetTimeInNanoSecond (GetPerformanceCounter ());
if (Value == PcdGet32 (PcdProgressCodeS3SuspendStart)) {
//
// S3 Suspend started, record the performance data and return.
//
mSuspendStartTime = CurrentTime;
return EFI_SUCCESS;
}
//
// We are going to S3 sleep, record S3 Suspend End performance data.
//
S3SuspendRecord.SuspendStart = mSuspendStartTime;
S3SuspendRecord.SuspendEnd = CurrentTime;
//
// Save S3 suspend performance data to lock box, it will be used by Firmware Performance PEIM.
//
if (!mS3SuspendLockBoxSaved) {
Status = SaveLockBox (
&gEfiFirmwarePerformanceGuid,
&S3SuspendRecord,
sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)
);
ASSERT_EFI_ERROR (Status);
mS3SuspendLockBoxSaved = TRUE;
} else {
Status = UpdateLockBox (
&gEfiFirmwarePerformanceGuid,
0,
&S3SuspendRecord,
sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)
);
ASSERT_EFI_ERROR (Status);
}
return EFI_SUCCESS;
}
/**
The module Entry Point of the Firmware Performance Data Table SMM driver.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval Other Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
FirmwarePerformanceSmmEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
if (FeaturePcdGet (PcdFirmwarePerformanceDataTableS3Support)) {
EFI_STATUS Status;
//
// Get SMM Report Status Code Handler Protocol.
//
Status = gSmst->SmmLocateProtocol (
&gEfiSmmRscHandlerProtocolGuid,
NULL,
(VOID **) &mRscHandlerProtocol
);
ASSERT_EFI_ERROR (Status);
//
// Register report status code listener for S3 Suspend Start and End.
//
Status = mRscHandlerProtocol->Register (FpdtStatusCodeListenerSmm);
ASSERT_EFI_ERROR (Status);
return Status;
} else {
return EFI_UNSUPPORTED;
}
}
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