path: root/src/vendorcode/amd/agesa/f15tn/Proc/CPU/Feature/cpuC6State.c

/* $NoKeywords:$ */
/**
 * @file
 *
 * AMD AGESA CPU C6 feature support code.
 *
 * Contains code that declares the AGESA CPU C6 related APIs
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project:      AGESA
 * @e sub-project:  CPU/Feature
 * @e \$Revision: 63425 $   @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $
 *
 */
/*
 ******************************************************************************
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 */

/*----------------------------------------------------------------------------------------
 *                             M O D U L E S    U S E D
 *----------------------------------------------------------------------------------------
 */
#include "AGESA.h"
#include "amdlib.h"
#include "Ids.h"
#include "cpuRegisters.h"
#include "cpuEarlyInit.h"
#include "GeneralServices.h"
#include "cpuFamilyTranslation.h"
#include "OptionMultiSocket.h"
#include "cpuApicUtilities.h"
#include "cpuServices.h"
#include "cpuFeatures.h"
#include "cpuC6State.h"
#include "Filecode.h"
CODE_GROUP (G1_PEICC)
RDATA_GROUP (G1_PEICC)

#define FILECODE PROC_CPU_FEATURE_CPUC6STATE_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
 *----------------------------------------------------------------------------------------
 */
VOID
STATIC
EnableC6OnSocket (
  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 C6FamilyServiceTable;
extern OPTION_MULTISOCKET_CONFIGURATION OptionMultiSocketConfiguration;

/*---------------------------------------------------------------------------------------*/
/**
 *  Should C6 be enabled
 *
 * @param[in]    PlatformConfig     Contains the runtime modifiable feature input data.
 * @param[in]    StdHeader          Config Handle for library, services.
 *
 * @retval       TRUE               C6 is supported.
 * @retval       FALSE              C6 cannot be enabled.
 *
 */
BOOLEAN
STATIC
IsC6FeatureEnabled (
  IN       PLATFORM_CONFIGURATION *PlatformConfig,
  IN       AMD_CONFIG_PARAMS      *StdHeader
  )
{
  UINT32             Socket;
  BOOLEAN            IsEnabled;
  C6_FAMILY_SERVICES *FamilyServices;

  IsEnabled = FALSE;
  if (PlatformConfig->CStateMode == CStateModeC6) {
    IsEnabled = TRUE;
    for (Socket = 0; Socket < GetPlatformNumberOfSockets (); Socket++) {
      if (IsProcessorPresent (Socket, StdHeader)) {
        GetFeatureServicesOfSocket (&C6FamilyServiceTable, Socket, (CONST VOID **)&FamilyServices, StdHeader);
        if ((FamilyServices == NULL) || !FamilyServices->IsC6Supported (FamilyServices, Socket, PlatformConfig, StdHeader)) {
          IsEnabled = FALSE;
          break;
        }
      }
    }
  }
  return IsEnabled;
}

/*---------------------------------------------------------------------------------------*/
/**
 *  Enable the C6 C-state
 *
 * @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
InitializeC6Feature (
  IN       UINT64                 EntryPoint,
  IN       PLATFORM_CONFIGURATION *PlatformConfig,
  IN       AMD_CONFIG_PARAMS      *StdHeader
  )
{
  UINT32  BscSocket;
  UINT32  Ignored;
  UINT32  BscCoreNum;
  UINT32  Core;
  UINT32  Socket;
  UINT32  NumberOfSockets;
  UINT32  NumberOfCores;
  AP_TASK TaskPtr;
  AMD_CPU_EARLY_PARAMS CpuEarlyParams;
  C6_FAMILY_SERVICES  *C6FamilyServices;
  AGESA_STATUS IgnoredSts;

  CpuEarlyParams.PlatformConfig = *PlatformConfig;

  TaskPtr.FuncAddress.PfApTaskIC = EnableC6OnSocket;
  TaskPtr.DataTransfer.DataSizeInDwords = 2;
  TaskPtr.DataTransfer.DataPtr = &EntryPoint;
  TaskPtr.DataTransfer.DataTransferFlags = 0;
  TaskPtr.ExeFlags = PASS_EARLY_PARAMS;
  OptionMultiSocketConfiguration.BscRunCodeOnAllSystemCore0s (&TaskPtr, StdHeader, &CpuEarlyParams);

  if ((EntryPoint & (CPU_FEAT_AFTER_POST_MTRR_SYNC | CPU_FEAT_AFTER_RESUME_MTRR_SYNC)) != 0) {
    // Load any required microcode patches on both normal boot and resume from S3.
    IdentifyCore (StdHeader, &BscSocket, &Ignored, &BscCoreNum, &IgnoredSts);
    GetFeatureServicesOfSocket (&C6FamilyServiceTable, BscSocket, (CONST VOID **)&C6FamilyServices, StdHeader);
    if (C6FamilyServices != NULL) {
      C6FamilyServices->ReloadMicrocodePatchAfterMemInit (StdHeader);
    }

    // run code on all APs
    TaskPtr.DataTransfer.DataSizeInDwords = 0;
    TaskPtr.ExeFlags = 0;

    NumberOfSockets = GetPlatformNumberOfSockets ();

    for (Socket = 0; Socket < NumberOfSockets; Socket++) {
      if (IsProcessorPresent (Socket, StdHeader)) {
        GetFeatureServicesOfSocket (&C6FamilyServiceTable, Socket, (CONST VOID **)&C6FamilyServices, StdHeader);
        if (C6FamilyServices != NULL) {
          // run code on all APs
          TaskPtr.FuncAddress.PfApTask = C6FamilyServices->ReloadMicrocodePatchAfterMemInit;
          if (GetActiveCoresInGivenSocket (Socket, &NumberOfCores, StdHeader)) {
            for (Core = 0; Core < NumberOfCores; Core++) {
              if ((Socket != BscSocket) || (Core != BscCoreNum)) {
                ApUtilRunCodeOnSocketCore ((UINT8) Socket, (UINT8) Core, &TaskPtr, StdHeader);
              }
            }
          }
        }
      }
    }
  }
  return AGESA_SUCCESS;
}


/*---------------------------------------------------------------------------------------*/
/**
 *  'Local' core 0 task to enable C6 on it's socket.
 *
 * @param[in]    EntryPoint         Timepoint designator.
 * @param[in]    StdHeader          Config Handle for library, services.
 * @param[in]    CpuEarlyParams     Service parameters.
 *
 */
VOID
STATIC
EnableC6OnSocket (
  IN       VOID *EntryPoint,
  IN       AMD_CONFIG_PARAMS *StdHeader,
  IN       AMD_CPU_EARLY_PARAMS *CpuEarlyParams
  )
{

  C6_FAMILY_SERVICES *FamilyServices;

  IDS_HDT_CONSOLE (CPU_TRACE, "    C6 is enabled\n");

  GetFeatureServicesOfCurrentCore (&C6FamilyServiceTable, (CONST VOID **)&FamilyServices, StdHeader);
  FamilyServices->InitializeC6 (FamilyServices,
                                *((UINT64 *) EntryPoint),
                                &CpuEarlyParams->PlatformConfig,
                                StdHeader);
}

/*---------------------------------------------------------------------------------------*/
/**
 *  Reload microcode patch after memory is initialized.
 *
 * @param[in]    StdHeader          Config Handle for library, services.
 *
 */
VOID
ReloadMicrocodePatchAfterMemInit (
  IN       AMD_CONFIG_PARAMS *StdHeader
  )
{
  LoadMicrocodePatch (StdHeader);
}


CONST CPU_FEATURE_DESCRIPTOR ROMDATA CpuFeatureC6State =
{
  C6Cstate,
  (CPU_FEAT_AFTER_PM_INIT | CPU_FEAT_AFTER_POST_MTRR_SYNC | CPU_FEAT_AFTER_RESUME_MTRR_SYNC),
  IsC6FeatureEnabled,
  InitializeC6Feature
};