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Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuCoreLeveling.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuCoreLeveling.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuCoreLeveling.c b/src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuCoreLeveling.c new file mode 100644 index 0000000000..c6d902c1d2 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuCoreLeveling.c @@ -0,0 +1,353 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * AMD CPU Core Leveling Function. + * + * Contains code to Level the number of core in a multi-socket system + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: CPU + * @e \$Revision: 35136 $ @e \$Date: 2010-07-16 11:29:48 +0800 (Fri, 16 Jul 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. + * + * *************************************************************************** + * + */ + + +/* + *---------------------------------------------------------------------------- + * MODULES USED + * + *---------------------------------------------------------------------------- + */ +#include "AGESA.h" +#include "AMD.h" +#include "amdlib.h" +#include "Topology.h" +#include "cpuRegisters.h" +#include "GeneralServices.h" +#include "cpuServices.h" +#include "cpuFamilyTranslation.h" +#include "cpuFeatures.h" +#include "cpuEarlyInit.h" +#include "heapManager.h" +#include "Filecode.h" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G1_PEICC) +#define FILECODE PROC_CPU_FEATURE_CPUCORELEVELING_FILECODE +/*---------------------------------------------------------------------------- + * DEFINITIONS AND MACROS + * + *---------------------------------------------------------------------------- + */ + + +/*---------------------------------------------------------------------------- + * TYPEDEFS AND STRUCTURES + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------- + * E X P O R T E D F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ +extern CPU_FAMILY_SUPPORT_TABLE CoreLevelingFamilyServiceTable; + +/*---------------------------------------------------------------------------- + * PROTOTYPES OF LOCAL FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------- + * P U B L I C F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------*/ +/** + * Should core leveling be enabled + * + * @param[in] PlatformConfig Contains the runtime modifiable feature input data. + * @param[in] StdHeader Config Handle for library, services. + * + * @retval TRUE core leveling is supported. + * @retval FALSE core leveling cannot be enabled. + * + */ +BOOLEAN +STATIC +IsCoreLevelingEnabled ( + IN PLATFORM_CONFIGURATION *PlatformConfig, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + CORE_LEVELING_TYPE CoreLevelMode; + + CoreLevelMode = (CORE_LEVELING_TYPE) PlatformConfig->CoreLevelingMode; + if (CoreLevelMode != CORE_LEVEL_NONE) { + return (TRUE); + } else { + return (FALSE); + } +} + +/*---------------------------------------------------------------------------------------*/ +/** + * Performs core leveling for the system. + * + * This function implements the AMD_CPU_EARLY_PARAMS.CoreLevelingMode parameter. + * The possible modes are: + * -0 CORE_LEVEL_LOWEST Level to lowest common denominator + * -1 CORE_LEVEL_TWO Level to 2 cores + * -2 CORE_LEVEL_POWER_OF_TWO Level to 1,2,4 or 8 + * -3 CORE_LEVEL_NONE Do no leveling + * -4 CORE_LEVEL_COMPUTE_UNIT Level cores to one core per compute unit + * + * @param[in] EntryPoint Timepoint designator. + * @param[in] PlatformConfig Contains the leveling mode parameter + * @param[in] StdHeader Config handle for library and services + * + * @return The most severe status of any family specific service. + * + */ +AGESA_STATUS +CoreLevelingAtEarly ( + IN UINT64 EntryPoint, + IN PLATFORM_CONFIGURATION *PlatformConfig, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT32 CoreNumPerComputeUnit; + UINT32 MinNumOfComputeUnit; + UINT32 EnabledComputeUnit; + UINT32 Socket; + UINT32 Module; + UINT32 NumberOfSockets; + UINT32 NumberOfModules; + UINT32 MinCoreCountOnNode; + UINT32 MaxCoreCountOnNode; + UINT32 LowCore; + UINT32 HighCore; + UINT32 LeveledCores; + UINT32 RequestedCores; + UINT32 TotalEnabledCoresOnNode; + BOOLEAN RegUpdated; + AP_MAIL_INFO ApMailboxInfo; + CORE_LEVELING_TYPE CoreLevelMode; + CPU_CORE_LEVELING_FAMILY_SERVICES *FamilySpecificServices; + WARM_RESET_REQUEST Request; + + MaxCoreCountOnNode = 0; + MinCoreCountOnNode = 0xFFFFFFFF; + LeveledCores = 0; + CoreNumPerComputeUnit = 1; + MinNumOfComputeUnit = 0xFF; + + ASSERT (PlatformConfig->CoreLevelingMode < CoreLevelModeMax); + + // Get OEM IO core level mode + CoreLevelMode = (CORE_LEVELING_TYPE) PlatformConfig->CoreLevelingMode; + + // Get socket count + NumberOfSockets = GetPlatformNumberOfSockets (); + GetApMailbox (&ApMailboxInfo.Info, StdHeader); + NumberOfModules = ApMailboxInfo.Fields.ModuleType + 1; + + // Collect cpu core info + for (Socket = 0; Socket < NumberOfSockets; Socket++) { + if (IsProcessorPresent (Socket, StdHeader)) { + for (Module = 0; Module < NumberOfModules; Module++) { + if (GetGivenModuleCoreRange (Socket, Module, &LowCore, &HighCore, StdHeader)) { + // Get the highest and lowest core count in all nodes + TotalEnabledCoresOnNode = HighCore - LowCore + 1; + if (TotalEnabledCoresOnNode < MinCoreCountOnNode) { + MinCoreCountOnNode = TotalEnabledCoresOnNode; + } + if (TotalEnabledCoresOnNode > MaxCoreCountOnNode) { + MaxCoreCountOnNode = TotalEnabledCoresOnNode; + } + EnabledComputeUnit = TotalEnabledCoresOnNode; + switch (GetComputeUnitMapping (StdHeader)) { + case AllCoresMapping: + // All cores are in their own compute unit. + break; + case EvenCoresMapping: + // Cores are paired in compute units. + CoreNumPerComputeUnit = 2; + EnabledComputeUnit = (TotalEnabledCoresOnNode / 2); + break; + default: + ASSERT (FALSE); + } + // Get minimum of compute unit. This will either be the minimum number of cores (AllCoresMapping), + // or less (EvenCoresMapping). + if (EnabledComputeUnit < MinNumOfComputeUnit) { + MinNumOfComputeUnit = EnabledComputeUnit; + } + } + } + } + } + + // Get LeveledCores + switch (CoreLevelMode) { + case CORE_LEVEL_LOWEST: + if (MinCoreCountOnNode == MaxCoreCountOnNode) { + return (AGESA_SUCCESS); + } + LeveledCores = (MinCoreCountOnNode / CoreNumPerComputeUnit) * CoreNumPerComputeUnit; + break; + case CORE_LEVEL_TWO: + LeveledCores = 2 / NumberOfModules; + if (LeveledCores != 0) { + LeveledCores = (LeveledCores <= MinCoreCountOnNode) ? LeveledCores : MinCoreCountOnNode; + } else { + return (AGESA_WARNING); + } + if ((LeveledCores * NumberOfModules) != 2) { + PutEventLog ( + AGESA_WARNING, + CPU_WARNING_ADJUSTED_LEVELING_MODE, + 2, (LeveledCores * NumberOfModules), 0, 0, StdHeader + ); + } + break; + case CORE_LEVEL_POWER_OF_TWO: + // Level to power of 2 (1, 2, 4, 8...) + LeveledCores = 1; + while (MinCoreCountOnNode >= (LeveledCores * 2)) { + LeveledCores = LeveledCores * 2; + } + break; + case CORE_LEVEL_COMPUTE_UNIT: + // Level cores to one core per compute unit, with additional reduction to level + // all processors to match the processor with the minimum number of cores. + if (CoreNumPerComputeUnit == 1) { + // If there is one core per compute unit, this is the same as CORE_LEVEL_LOWEST. + if (MinCoreCountOnNode == MaxCoreCountOnNode) { + return (AGESA_SUCCESS); + } + LeveledCores = MinCoreCountOnNode; + } else { + // If there are more than one core per compute unit, level to the number of compute units. + LeveledCores = MinNumOfComputeUnit; + } + break; + case CORE_LEVEL_ONE: + LeveledCores = 1; + if (NumberOfModules > 1) { + PutEventLog ( + AGESA_WARNING, + CPU_WARNING_ADJUSTED_LEVELING_MODE, + 1, NumberOfModules, 0, 0, StdHeader + ); + } + break; + case CORE_LEVEL_THREE: + case CORE_LEVEL_FOUR: + case CORE_LEVEL_FIVE: + case CORE_LEVEL_SIX: + case CORE_LEVEL_SEVEN: + case CORE_LEVEL_EIGHT: + case CORE_LEVEL_NINE: + case CORE_LEVEL_TEN: + case CORE_LEVEL_ELEVEN: + case CORE_LEVEL_TWELVE: + case CORE_LEVEL_THIRTEEN: + case CORE_LEVEL_FOURTEEN: + case CORE_LEVEL_FIFTEEN: + // MCM processors can not have an odd number of cores. For an odd CORE_LEVEL_N, MCM processors will be + // leveled as though CORE_LEVEL_N+1 was chosen. + // Processors with compute units disable all cores in an entire compute unit at a time, or on an MCM processor, + // two compute units at a time. For example, on an SCM processor with two cores per compute unit, the effective + // explicit levels are CORE_LEVEL_ONE, CORE_LEVEL_TWO, CORE_LEVEL_FOUR, CORE_LEVEL_SIX, and + // CORE_LEVEL_EIGHT. The same example for an MCM processor with two cores per compute unit has effective + // explicit levels of CORE_LEVEL_TWO, CORE_LEVEL_FOUR, CORE_LEVEL_EIGHT, and CORE_LEVEL_TWELVE. + RequestedCores = CoreLevelMode - CORE_LEVEL_THREE + 3; + LeveledCores = (RequestedCores + NumberOfModules - 1) / NumberOfModules; + LeveledCores = (LeveledCores / CoreNumPerComputeUnit) * CoreNumPerComputeUnit; + LeveledCores = (LeveledCores <= MinCoreCountOnNode) ? LeveledCores : MinCoreCountOnNode; + if (LeveledCores != 1) { + LeveledCores = (LeveledCores / CoreNumPerComputeUnit) * CoreNumPerComputeUnit; + } + if ((LeveledCores * NumberOfModules * CoreNumPerComputeUnit) != RequestedCores) { + PutEventLog ( + AGESA_WARNING, + CPU_WARNING_ADJUSTED_LEVELING_MODE, + RequestedCores, (LeveledCores * NumberOfModules * CoreNumPerComputeUnit), 0, 0, StdHeader + ); + } + break; + default: + ASSERT (FALSE); + } + + // Set down core register + for (Socket = 0; Socket < NumberOfSockets; Socket++) { + if (IsProcessorPresent (Socket, StdHeader)) { + GetFeatureServicesOfSocket (&CoreLevelingFamilyServiceTable, Socket, &FamilySpecificServices, StdHeader); + if (FamilySpecificServices != NULL) { + for (Module = 0; Module < NumberOfModules; Module++) { + RegUpdated = FamilySpecificServices->SetDownCoreRegister (FamilySpecificServices, &Socket, &Module, &LeveledCores, CoreLevelMode, StdHeader); + // If the down core register is updated, trigger a warm reset. + if (RegUpdated) { + GetWarmResetFlag (StdHeader, &Request); + Request.RequestBit = TRUE; + Request.StateBits = Request.PostStage - 1; + SetWarmResetFlag (StdHeader, &Request); + } + } + } + } + } + + return (AGESA_SUCCESS); +} + + +CONST CPU_FEATURE_DESCRIPTOR ROMDATA CpuFeatureCoreLeveling = +{ + CoreLeveling, + (CPU_FEAT_AFTER_PM_INIT), + IsCoreLevelingEnabled, + CoreLevelingAtEarly +}; + +/*---------------------------------------------------------------------------------------- + * L O C A L F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + |