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/* $NoKeywords:$ */
/**
* @file
*
* AMD AGESA CPU IO Cstate function declarations.
*
* Contains code that declares the AGESA CPU IO Cstate related APIs
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: CPU/Feature
* @e \$Revision: 44324 $ @e \$Date: 2010-12-22 17:16:51 +0800 (Wed, 22 Dec 2010) $
*/
/*
******************************************************************************
*
* Copyright (c) 2011, 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 "amdlib.h"
#include "cpuRegisters.h"
#include "cpuFeatures.h"
#include "cpuIoCstate.h"
#include "cpuServices.h"
#include "cpuFamilyTranslation.h"
#include "cpuApicUtilities.h"
#include "OptionMultiSocket.h"
#include "Filecode.h"
CODE_GROUP (G1_PEICC)
RDATA_GROUP (G1_PEICC)
#define FILECODE PROC_CPU_FEATURE_CPUIOCSTATE_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
EnableIoCstateOnSocket (
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 IoCstateFamilyServiceTable;
extern OPTION_MULTISOCKET_CONFIGURATION OptionMultiSocketConfiguration;
/*---------------------------------------------------------------------------------------*/
/**
* Should IO Cstate be enabled
* If all processors support IO Cstate, return TRUE. Otherwise, return FALSE
*
* @param[in] PlatformConfig Contains the runtime modifiable feature input data.
* @param[in] StdHeader Config Handle for library, services.
*
* @retval TRUE IO Cstate is supported.
* @retval FALSE IO Cstate cannot be enabled.
*
*/
BOOLEAN
STATIC
IsIoCstateFeatureSupported (
IN PLATFORM_CONFIGURATION *PlatformConfig,
IN AMD_CONFIG_PARAMS *StdHeader
)
{
UINT32 Socket;
BOOLEAN IsSupported;
IO_CSTATE_FAMILY_SERVICES *IoCstateServices;
IsSupported = FALSE;
if ((PlatformConfig->CStateIoBaseAddress != 0) && (PlatformConfig->CStateIoBaseAddress <= 0xFFF8)) {
for (Socket = 0; Socket < GetPlatformNumberOfSockets (); Socket++) {
if (IsProcessorPresent (Socket, StdHeader)) {
GetFeatureServicesOfSocket (&IoCstateFamilyServiceTable, Socket, (const VOID **)&IoCstateServices, StdHeader);
if (IoCstateServices != NULL) {
if (IoCstateServices->IsIoCstateSupported (IoCstateServices, Socket, StdHeader)) {
IsSupported = TRUE;
} else {
// Stop checking remaining socket(s) once we find one that does not support IO Cstates
IsSupported = FALSE;
break;
}
} else {
// Exit the for loop if we found a socket that does not have the IO Cstates feature installed
IsSupported = FALSE;
break;
}
}
}
}
return IsSupported;
}
/*---------------------------------------------------------------------------------------*/
/**
* Enable IO Cstate feature
*
* @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
InitializeIoCstateFeature (
IN UINT64 EntryPoint,
IN PLATFORM_CONFIGURATION *PlatformConfig,
IN AMD_CONFIG_PARAMS *StdHeader
)
{
AP_TASK TaskPtr;
AMD_CPU_EARLY_PARAMS CpuEarlyParams;
IDS_HDT_CONSOLE (CPU_TRACE, " IO C-state is enabled\n");
CpuEarlyParams.PlatformConfig = *PlatformConfig;
TaskPtr.FuncAddress.PfApTaskIC = EnableIoCstateOnSocket;
TaskPtr.DataTransfer.DataSizeInDwords = 2;
TaskPtr.DataTransfer.DataPtr = &EntryPoint;
TaskPtr.DataTransfer.DataTransferFlags = 0;
TaskPtr.ExeFlags = PASS_EARLY_PARAMS;
OptionMultiSocketConfiguration.BscRunCodeOnAllSystemCore0s (&TaskPtr, StdHeader, &CpuEarlyParams);
return AGESA_SUCCESS;
}
/*---------------------------------------------------------------------------------------*/
/**
* 'Local' core 0 task to enable IO Cstate on it's socket.
*
* @param[in] EntryPoint Timepoint designator.
* @param[in] StdHeader Config Handle for library, services.
* @param[in] CpuEarlyParams Service parameters.
*
*/
VOID
STATIC
EnableIoCstateOnSocket (
IN VOID *EntryPoint,
IN AMD_CONFIG_PARAMS *StdHeader,
IN AMD_CPU_EARLY_PARAMS *CpuEarlyParams
)
{
IO_CSTATE_FAMILY_SERVICES *FamilyServices;
GetFeatureServicesOfCurrentCore (&IoCstateFamilyServiceTable, (const VOID **)&FamilyServices, StdHeader);
FamilyServices->InitializeIoCstate (FamilyServices,
*((UINT64 *) EntryPoint),
&CpuEarlyParams->PlatformConfig,
StdHeader);
}
CONST CPU_FEATURE_DESCRIPTOR ROMDATA CpuFeatureIoCstate =
{
IoCstate,
(CPU_FEAT_AFTER_PM_INIT),
IsIoCstateFeatureSupported,
InitializeIoCstateFeature
};