/** @file
  Source file for FSP MP Service implementation.

 @copyright
  INTEL CONFIDENTIAL
  Copyright 2020 Intel Corporation.

  The source code contained or described herein and all documents related to the
  source code ("Material") are owned by Intel Corporation or its suppliers or
  licensors. Title to the Material remains with Intel Corporation or its suppliers
  and licensors. The Material may contain trade secrets and proprietary and
  confidential information of Intel Corporation and its suppliers and licensors,
  and is protected by worldwide copyright and trade secret laws and treaty
  provisions. No part of the Material may be used, copied, reproduced, modified,
  published, uploaded, posted, transmitted, distributed, or disclosed in any way
  without Intel's prior express written permission.

  No license under any patent, copyright, trade secret or other intellectual
  property right is granted to or conferred upon you by disclosure or delivery
  of the Materials, either expressly, by implication, inducement, estoppel or
  otherwise. Any license under such intellectual property rights must be
  express and approved by Intel in writing.

  Unless otherwise agreed by Intel in writing, you may not remove or alter
  this notice or any other notice embedded in Materials by Intel or
  Intel's suppliers or licensors in any way.

  This file contains an 'Intel Peripheral Driver' and is uniquely identified as
  "Intel Reference Module" and is licensed for Intel CPUs and chipsets under
  the terms of your license agreement with Intel or your vendor. This file may
  be modified by the user, subject to additional terms of the license agreement.

@par Specification
**/
#include <Library/PeiServicesTablePointerLib.h>
#include <Ppi/MpServices2.h>
#include "FspInit.h"

typedef struct {
  EDKII_PEI_MP_SERVICES2_PPI  *CpuMp2Ppi;
  VOID                        *CpuMpPpiFunction;
  UINTN                       Uintn1;
  UINTN                       Uintn2;
  EFI_PROCESSOR_INFORMATION   *ProInfo;
  EFI_AP_PROCEDURE            ApPro;
  VOID                        *Void;
  UINT32                      *Uint32;
  BOOLEAN                     MpBoolean;
} MP_SERVICE_PARAMETER;

extern EDKII_PEI_MP_SERVICES2_PPI    *mCpuMp2Ppi;
extern FSP_GLOBAL_DATA               *mFspGlobalData;

// These global variables only works in Post memory phase.
MP_SERVICE_PARAMETER          mMpServiceParameter;
EFI_STATUS                    mStatus;
BOOLEAN                       mIsSwitchStackDone = FALSE;

//
// CPU MP WRAPPER PPI to be installed
//
EDKII_PEI_MP_SERVICES2_PPI              mMpServices2WrapperPpi = {
  MpWrapperGetNumberOfProcessors,
  MpWrapperGetProcessorInfo,
  MpWrapperStartupAllAPs,
  MpWrapperStartupThisAP,
  MpWrapperSwitchBSP,
  MpWrapperEnableDisableAP,
  MpWrapperWhoAmI,
  MpWrapperStartupAllCPUs
};

EFI_STATUS
EFIAPI
SwitchStackGetNumberOfProcessors (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackGetProcessorInfo (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackStartupAllAPs (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackStartupThisAP (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackSwitchBSP (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackEnableDisableAP (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackWhoAmI (
  VOID
  );

EFI_STATUS
EFIAPI
SwitchStackStartupAllCPUs (
  VOID
  );

EFI_STATUS
EFIAPI
MpWrapperGetNumberOfProcessors (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  OUT UINTN                      *NumberOfProcessors,
  OUT UINTN                      *NumberOfEnabledProcessors
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->GetNumberOfProcessors (
                           mCpuMp2Ppi,
                           NumberOfProcessors,
                           NumberOfEnabledProcessors
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->GetNumberOfProcessors;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.Uintn1 = (UINTN ) NumberOfProcessors;
    mMpServiceParameter.Uintn2 = (UINTN ) NumberOfEnabledProcessors;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackGetNumberOfProcessors();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperGetProcessorInfo (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  IN  UINTN                      ProcessorNumber,
  OUT EFI_PROCESSOR_INFORMATION  *ProcessorInfoBuffer
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->GetProcessorInfo (
                           mCpuMp2Ppi,
                           ProcessorNumber,
                           ProcessorInfoBuffer
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->GetProcessorInfo;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.Uintn1 = ProcessorNumber;
    mMpServiceParameter.ProInfo = ProcessorInfoBuffer;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackGetProcessorInfo();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperStartupAllAPs (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  IN  EFI_AP_PROCEDURE           Procedure,
  IN  BOOLEAN                    SingleThread,
  IN  UINTN                      TimeoutInMicroSeconds,
  IN  VOID                       *ProcedureArgument      OPTIONAL
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->StartupAllAPs (
                           mCpuMp2Ppi,
                           Procedure,
                           SingleThread,
                           TimeoutInMicroSeconds,
                           ProcedureArgument
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->StartupAllAPs;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.ApPro = Procedure;
    mMpServiceParameter.MpBoolean = SingleThread;
    mMpServiceParameter.Uintn1 = TimeoutInMicroSeconds;
    mMpServiceParameter.Void = ProcedureArgument;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackStartupAllAPs();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperStartupThisAP (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  IN  EFI_AP_PROCEDURE           Procedure,
  IN  UINTN                      ProcessorNumber,
  IN  UINTN                      TimeoutInMicroseconds,
  IN  VOID                       *ProcedureArgument      OPTIONAL
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->StartupThisAP (
                           mCpuMp2Ppi,
                           Procedure,
                           ProcessorNumber,
                           TimeoutInMicroseconds,
                           ProcedureArgument
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->StartupThisAP;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.ApPro = Procedure;
    mMpServiceParameter.Uintn1 = ProcessorNumber;
    mMpServiceParameter.Uintn2 = TimeoutInMicroseconds;
    mMpServiceParameter.Void = (UINTN *) ProcedureArgument;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackStartupThisAP();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperSwitchBSP (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  IN  UINTN                      ProcessorNumber,
  IN  BOOLEAN                    EnableOldBSP
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->SwitchBSP (
                           mCpuMp2Ppi,
                           ProcessorNumber,
                           EnableOldBSP
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->SwitchBSP;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.Uintn1 = ProcessorNumber;
    mMpServiceParameter.MpBoolean = EnableOldBSP;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackSwitchBSP();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperEnableDisableAP (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  IN  UINTN                      ProcessorNumber,
  IN  BOOLEAN                    EnableAP,
  IN  UINT32                     *HealthFlag OPTIONAL
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->EnableDisableAP (
                           mCpuMp2Ppi,
                           ProcessorNumber,
                           EnableAP,
                           HealthFlag
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->EnableDisableAP;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.Uintn1 = ProcessorNumber;
    mMpServiceParameter.MpBoolean = EnableAP;
    mMpServiceParameter.Uint32 = (UINT32 *) HealthFlag;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackEnableDisableAP();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperWhoAmI (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  OUT UINTN                      *ProcessorNumber
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->WhoAmI (
                           mCpuMp2Ppi,
                           ProcessorNumber
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->WhoAmI;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.Uintn1 = (UINTN) ProcessorNumber;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackWhoAmI();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}

EFI_STATUS
EFIAPI
MpWrapperStartupAllCPUs (
  IN  EDKII_PEI_MP_SERVICES2_PPI *This,
  IN  EFI_AP_PROCEDURE           Procedure,
  IN  UINTN                      TimeoutInMicroSeconds,
  IN  VOID                       *ProcedureArgument      OPTIONAL
  )
{
  mStatus = EFI_SUCCESS;

  if (mIsSwitchStackDone) {
    mStatus = mCpuMp2Ppi->StartupAllCPUs (
                           mCpuMp2Ppi,
                           Procedure,
                           TimeoutInMicroSeconds,
                           ProcedureArgument
                           );
  } else {
    mMpServiceParameter.CpuMpPpiFunction = (VOID *)(UINT32) mCpuMp2Ppi->StartupAllCPUs;
    mMpServiceParameter.CpuMp2Ppi = mCpuMp2Ppi;
    mMpServiceParameter.ApPro = Procedure;
    mMpServiceParameter.Uintn1 = TimeoutInMicroSeconds;
    mMpServiceParameter.Void = ProcedureArgument;

    mFspGlobalData->FunctionParameterPtr = &mMpServiceParameter;

    mIsSwitchStackDone = TRUE;
    mStatus = SwitchStackStartupAllCPUs();
    mIsSwitchStackDone = FALSE;
  }

  return mStatus;
}