/** @file
File to contain all the hardware specific stuff for the Smm Sw dispatch protocol.

Copyright (c) 2013-2015 Intel Corporation.

SPDX-License-Identifier: BSD-2-Clause-Patent


**/

//
// Include common header file for this module.
//
#include "CommonHeader.h"

#include "QNCSmmHelpers.h"

EFI_SMM_CPU_PROTOCOL  *mSmmCpu = NULL;

CONST QNC_SMM_SOURCE_DESC SW_SOURCE_DESC = {
  QNC_SMM_NO_FLAGS,
  {
    {
      {GPE_ADDR_TYPE, {R_QNC_GPE0BLK_SMIE}}, S_QNC_GPE0BLK_SMIE, N_QNC_GPE0BLK_SMIE_APM
    },
    NULL_BIT_DESC_INITIALIZER
  },
  {
    {
      {GPE_ADDR_TYPE, {R_QNC_GPE0BLK_SMIS}}, S_QNC_GPE0BLK_SMIS, N_QNC_GPE0BLK_SMIS_APM
    }
  }
};

VOID
SwGetContext(
  IN  DATABASE_RECORD    *Record,
  OUT QNC_SMM_CONTEXT    *Context
  )
{
  Context->Sw.SwSmiInputValue = IoRead8 (R_APM_CNT);
}

BOOLEAN
SwCmpContext (
  IN QNC_SMM_CONTEXT     *Context1,
  IN QNC_SMM_CONTEXT     *Context2
  )
{
  return (BOOLEAN)( Context1->Sw.SwSmiInputValue == Context2->Sw.SwSmiInputValue );
}

VOID
SwGetBuffer (
  IN  DATABASE_RECORD     * Record
  )
{
  EFI_STATUS                 Status;
  UINTN                      Index;
  UINTN                      CpuIndex;
  EFI_SMM_SAVE_STATE_IO_INFO IoState;

  //
  // Locate SMM CPU protocol to retrieve the CPU save state
  //
  if (mSmmCpu == NULL) {
    Status = gSmst->SmmLocateProtocol (&gEfiSmmCpuProtocolGuid, NULL, (VOID **) &mSmmCpu);
    ASSERT_EFI_ERROR (Status);
  }

  //
  // Find the CPU which generated the software SMI
  //
  CpuIndex = 0;
  for (Index = 0; Index < gSmst->NumberOfCpus; Index++) {
    Status = mSmmCpu->ReadSaveState (
                        mSmmCpu,
                        sizeof (EFI_SMM_SAVE_STATE_IO_INFO),
                        EFI_SMM_SAVE_STATE_REGISTER_IO,
                        Index,
                        &IoState
                        );
    if (!EFI_ERROR (Status) && (IoState.IoPort == R_APM_CNT)) {
      CpuIndex = Index;
      break;
    }
  }

  Record->CommBuffer.Sw.SwSmiCpuIndex = CpuIndex;
}