src/vendorcode/amd/agesa/f16kb/Proc/CPU/Feature/cpuPsi.c

/* $NoKeywords:$ */
/**
 * @file
 *
 * AMD AGESA CPU Power Status Indicator (PSI) feature support code.
 *
 * Contains code that declares the AGESA CPU PSI related APIs
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project:      AGESA
 * @e sub-project:  CPU/Feature
 * @e \$Revision: 84150 $   @e \$Date: 2012-12-12 15:46:25 -0600 (Wed, 12 Dec 2012) $
 *
 */
/*
 ******************************************************************************
 *
 * Copyright (c) 2008 - 2013, Advanced Micro Devices, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Advanced Micro Devices, Inc. nor the names of
 *       its contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ******************************************************************************
 */

/*----------------------------------------------------------------------------------------
 *                             M O D U L E S    U S E D
 *----------------------------------------------------------------------------------------
 */
#include "AGESA.h"
#include "GeneralServices.h"
#include "cpuFamilyTranslation.h"
#include "cpuApicUtilities.h"
#include "cpuFeatures.h"
#include "cpuPsi.h"
#include "OptionMultiSocket.h"
#include "Filecode.h"
CODE_GROUP (G1_PEICC)
RDATA_GROUP (G1_PEICC)

#define FILECODE PROC_CPU_FEATURE_CPUPSI_FILECODE

/*----------------------------------------------------------------------------------------
 *                   D E F I N I T I O N S    A N D    M A C R O S
 *----------------------------------------------------------------------------------------
 */

/*----------------------------------------------------------------------------------------
 *                  T Y P E D E F S     A N D     S T R U C T U  R E S
 *----------------------------------------------------------------------------------------
 */

/*----------------------------------------------------------------------------------------
 *           P R O T O T Y P E S     O F     L O C A L     F U  N C T I O N S
 *----------------------------------------------------------------------------------------
 */
UINT32
STATIC
EnablePsiOnSocket (
  IN       VOID *EntryPoint,
  IN       AMD_CONFIG_PARAMS *StdHeader,
  IN       AMD_CPU_EARLY_PARAMS *CpuEarlyParams
  );

/*----------------------------------------------------------------------------------------
 *                          E X P O R T E D    F U N C T I O N S
 *----------------------------------------------------------------------------------------
 */
extern CPU_FAMILY_SUPPORT_TABLE           PsiFamilyServiceTable;
extern OPTION_MULTISOCKET_CONFIGURATION   OptionMultiSocketConfiguration;

/*---------------------------------------------------------------------------------------*/
/**
 *  Should Power Status Indicator (PSI) be enabled
 *
 * @param[in]    PlatformConfig     Contains the runtime modifiable feature input data.
 * @param[in]    StdHeader          Config Handle for library, services.
 *
 * @retval       TRUE               PSI is supported.
 * @retval       FALSE              PSI cannot be enabled.
 *
 */
BOOLEAN
STATIC
IsPsiFeatureEnabled (
  IN       PLATFORM_CONFIGURATION *PlatformConfig,
  IN       AMD_CONFIG_PARAMS      *StdHeader
  )
{
  UINT32                Socket;
  BOOLEAN               IsEnabled;
  PSI_FAMILY_SERVICES   *PsiFamilyServices;
  UINT32                VrmType;

  IsEnabled = FALSE;

  for (VrmType = 0; VrmType < MaxVrmType; VrmType++) {
    if (PlatformConfig->VrmProperties[VrmType].LowPowerThreshold != 0) {
      IsEnabled = TRUE;
      break;
    }
  }

  if (!IsEnabled) {
    return FALSE;
  }

  for (Socket = 0; Socket < GetPlatformNumberOfSockets (); Socket++) {
    if (IsProcessorPresent (Socket, StdHeader)) {
      GetFeatureServicesOfSocket (&PsiFamilyServiceTable, Socket, (CONST VOID **)&PsiFamilyServices, StdHeader);
      if ((PsiFamilyServices == NULL) || (!PsiFamilyServices->IsPsiSupported (PsiFamilyServices, Socket, PlatformConfig, StdHeader))) {
        IsEnabled = FALSE;
        break;
      }
    }
  }
  return IsEnabled;
}


/*---------------------------------------------------------------------------------------*/
/**
 *  Enable Power Status Indicator (PSI)
 *
 * @param[in]    EntryPoint         Timepoint designator.
 * @param[in]    PlatformConfig     Contains the runtime modifiable feature input data.
 * @param[in]    StdHeader          Config Handle for library, services.
 *
 * @retval       AGESA_SUCCESS      Always succeeds.
 *
 */
AGESA_STATUS
STATIC
InitializePsiFeature (
  IN       UINT64                 EntryPoint,
  IN       PLATFORM_CONFIGURATION *PlatformConfig,
  IN       AMD_CONFIG_PARAMS      *StdHeader
  )
{
  AP_TASK               TaskPtr;
  AGESA_STATUS          AgesaStatus;
  AMD_CPU_EARLY_PARAMS  CpuEarlyParams;

  IDS_HDT_CONSOLE (CPU_TRACE, "    PSI mode is being initialized\n");

  CpuEarlyParams.PlatformConfig = *PlatformConfig;

  TaskPtr.FuncAddress.PfApTaskIOC = EnablePsiOnSocket;
  TaskPtr.DataTransfer.DataSizeInDwords = 2;
  TaskPtr.DataTransfer.DataPtr = &EntryPoint;
  TaskPtr.DataTransfer.DataTransferFlags = 0;
  TaskPtr.ExeFlags = PASS_EARLY_PARAMS | TASK_HAS_OUTPUT;
  AgesaStatus = OptionMultiSocketConfiguration.BscRunCodeOnAllSystemCore0s (&TaskPtr, StdHeader, &CpuEarlyParams);

  IDS_HDT_CONSOLE (CPU_TRACE, "    PSI mode is enabled\n");

  return AgesaStatus;
}

/*---------------------------------------------------------------------------------------*/
/**
 *  AP task to enable PSI
 *
 * @param[in]    EntryPoint         Timepoint designator.
 * @param[in]    StdHeader          Config Handle for library, services.
 * @param[in]    CpuEarlyParams     Service parameters.
 *
 */
UINT32
STATIC
EnablePsiOnSocket (
  IN       VOID *EntryPoint,
  IN       AMD_CONFIG_PARAMS *StdHeader,
  IN       AMD_CPU_EARLY_PARAMS *CpuEarlyParams
  )
{
  AGESA_STATUS  CalledStatus;
  PSI_FAMILY_SERVICES   *PsiFamilyServices;

  CalledStatus = AGESA_UNSUPPORTED;
  GetFeatureServicesOfCurrentCore (&PsiFamilyServiceTable, (CONST VOID **)&PsiFamilyServices, StdHeader);
  if (PsiFamilyServices != NULL) {
    CalledStatus = PsiFamilyServices->EnablePsiOnSocket (PsiFamilyServices, *((UINT64 *) EntryPoint), &CpuEarlyParams->PlatformConfig, StdHeader);
  }
  return (UINT32) CalledStatus;
}

CONST CPU_FEATURE_DESCRIPTOR ROMDATA CpuFeaturePsi =
{
  CpuPsi,
  (CPU_FEAT_AFTER_POST_MTRR_SYNC | CPU_FEAT_AFTER_RESUME_MTRR_SYNC),
  IsPsiFeatureEnabled,
  InitializePsiFeature
};