diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14PowerCheck.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14PowerCheck.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14PowerCheck.c b/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14PowerCheck.c new file mode 100644 index 0000000000..53e6df5163 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14PowerCheck.c @@ -0,0 +1,358 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * AMD Family_14 P-State power check + * + * Performs the "Processor-Systemboard Power Delivery Compatibility Check" as + * described in the BKDG. + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: CPU/F14 + * @e \$Revision: 39744 $ @e \$Date: 2010-10-15 02:18:02 +0800 (Fri, 15 Oct 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 "cpuCacheInit.h" +#include "cpuF14PowerMgmt.h" +#include "cpuRegisters.h" +#include "cpuApicUtilities.h" +#include "cpuServices.h" +#include "GeneralServices.h" +#include "cpuEarlyInit.h" +#include "cpuFamilyTranslation.h" +#include "cpuF14PowerCheck.h" +#include "cpuF14Utilities.h" +#include "Filecode.h" +#define FILECODE PROC_CPU_FAMILY_0X14_CPUF14POWERCHECK_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 +F14PmPwrCheckCore ( + IN VOID *ErrorData, + IN AMD_CONFIG_PARAMS *StdHeader + ); + +VOID +STATIC +F14PmPwrChkCopyPstate ( + IN UINT8 Dest, + IN UINT8 Src, + IN AMD_CONFIG_PARAMS *StdHeader + ); + +/*---------------------------------------------------------------------------------------- + * E X P O R T E D F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------*/ +/** + * Family 14h core 0 entry point for performing the family 14h Processor- + * Systemboard Power Delivery Check. + * + * The steps are as follows: + * 1. Starting with P0, loop through all P-states until a passing state is + * found. A passing state is one in which the current required by the + * CPU is less than the maximum amount of current that the system can + * provide to the CPU. If P0 is under the limit, no further action is + * necessary. + * 2. If at least one P-State is under the limit & at least one P-State is + * over the limit, the BIOS must: + * a. Clear both D18F4x15C[BoostSrc] and D18F4x15C[NumBoostStates] to 0. + * b. If the processor's current P-State is disabled by the power check, + * then the BIOS must request a transition to an enabled P-state + * using MSRC001_0062[PstateCmd] and wait for MSRC001_0063[CurPstate] + * to reflect the new value. + * c. Copy the contents of the enabled P-state MSRs to the highest + * performance P-state locations. + * d. Request a P-state transition to the P-state MSR containing the + * COF/VID values currently applied. + * e. Adjust the following P-state parameters affected by the P-state + * MSR copy by subtracting the number of P-states that are disabled + * by the power check. + * 1. D18F3x64[HtcPstateLimit] + * 2. D18F3xDC[PstateMaxVal] + * 3. If all P-States are over the limit, the BIOS must: + * a. Clear both D18F4x15C[BoostSrc] and D18F4x15C[NumBoostStates] to 0. + * b. If the processor's current P-State is != D18F3xDC[PstateMaxVal], then + * write D18F3xDC[PstateMaxVal] to MSRC001_0062[PstateCmd] and wait for + * MSRC001_0063[CurPstate] to reflect the new value. + * c. If D18F3xDC[PstateMaxVal]!= 000b, copy the contents of the P-state + * MSR pointed to by D18F3xDC[PstateMaxVal] to MSRC001_0064 and set + * MSRC001_0064[PstateEn] + * d. Write 000b to MSRC001_0062[PstateCmd] and wait for MSRC001_0063 + * [CurPstate] to reflect the new value. + * e. Adjust the following P-state parameters to zero: + * 1. D18F3x64[HtcPstateLimit] + * 2. D18F3xDC[PstateMaxVal] + * + * @param[in] FamilySpecificServices The current Family Specific Services. + * @param[in] CpuEarlyParams Service parameters. + * @param[in] StdHeader Config handle for library and services. + * + */ +VOID +F14PmPwrCheck ( + IN CPU_SPECIFIC_SERVICES *FamilySpecificServices, + IN AMD_CPU_EARLY_PARAMS *CpuEarlyParams, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 DisPsNum; + UINT8 PsMaxVal; + UINT8 Pstate; + UINT32 ProcIddMax; + UINT32 PciRegister; + UINT32 Socket; + UINT32 Module; + UINT32 Core; + UINT32 PstateLimit; + PCI_ADDR PciAddress; + UINT64 MsrRegister; + AP_TASK TaskPtr; + AGESA_STATUS IgnoredSts; + PWRCHK_ERROR_DATA ErrorData; + + // get the socket number + IdentifyCore (StdHeader, &Socket, &Module, &Core, &IgnoredSts); + ErrorData.SocketNumber = (UINT8) Socket; + + ASSERT (Core == 0); + + // get the Max P-state value + for (PsMaxVal = NM_PS_REG - 1; PsMaxVal != 0; --PsMaxVal) { + LibAmdMsrRead (PS_REG_BASE + PsMaxVal, &MsrRegister, StdHeader); + if (((PSTATE_MSR *) &MsrRegister)->PsEnable == 1) { + break; + } + } + + ErrorData.HwPstateNumber = (UINT8) (PsMaxVal + 1); + + DisPsNum = 0; + for (Pstate = 0; Pstate < ErrorData.HwPstateNumber; Pstate++) { + if (FamilySpecificServices->GetProcIddMax (FamilySpecificServices, Pstate, &ProcIddMax, StdHeader)) { + if (ProcIddMax > CpuEarlyParams->PlatformConfig.VrmProperties[CoreVrm].CurrentLimit) { + // Add to event log the Pstate that exceeded the current limit + PutEventLog (AGESA_WARNING, + CPU_EVENT_PM_PSTATE_OVERCURRENT, + Socket, Pstate, 0, 0, StdHeader); + DisPsNum++; + } else { + break; + } + } + } + + // If all P-state registers are disabled, move P[PsMaxVal] to P0 + // and transition to P0, then wait for CurPstate = 0 + + ErrorData.AllowablePstateNumber = ((PsMaxVal + 1) - DisPsNum); + + // We only need to log this event on the BSC + if (ErrorData.AllowablePstateNumber == 0) { + PutEventLog (AGESA_FATAL, + CPU_EVENT_PM_ALL_PSTATE_OVERCURRENT, + Socket, 0, 0, 0, StdHeader); + } + + if (DisPsNum != 0) { + TaskPtr.FuncAddress.PfApTaskI = F14PmPwrCheckCore; + TaskPtr.DataTransfer.DataSizeInDwords = SIZE_IN_DWORDS (PWRCHK_ERROR_DATA); + TaskPtr.DataTransfer.DataPtr = &ErrorData; + TaskPtr.DataTransfer.DataTransferFlags = 0; + TaskPtr.ExeFlags = WAIT_FOR_CORE; + ApUtilRunCodeOnAllLocalCoresAtEarly (&TaskPtr, StdHeader, CpuEarlyParams); + + // Final Step + // D18F3x64[HtPstatelimit] -= disPsNum + // D18F3xDC[PstateMaxVal]-= disPsNum + + PciAddress.AddressValue = HTC_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); // D18F3x64 + PstateLimit = ((HTC_REGISTER *) &PciRegister)->HtcPstateLimit; + if (PstateLimit > DisPsNum) { + PstateLimit -= DisPsNum; + } else { + PstateLimit = 0; + } + ((HTC_REGISTER *) &PciRegister)->HtcPstateLimit = PstateLimit; + LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader); // D18F3x64 + + PciAddress.AddressValue = CPTC2_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); // D18F3xDC + PstateLimit = ((CLK_PWR_TIMING_CTRL2_REGISTER *) &PciRegister)->PstateMaxVal; + if (PstateLimit > DisPsNum) { + PstateLimit -= DisPsNum; + } else { + PstateLimit = 0; + } + ((CLK_PWR_TIMING_CTRL2_REGISTER *) &PciRegister)->PstateMaxVal = PstateLimit; + LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader); // D18F3xDC + } +} + + +/*---------------------------------------------------------------------------------------*/ +/** + * Core-level error handler called if any p-states were determined to be out + * of range for the mother board. + * + * This function implements steps 2b-d and 3b-d on each core. + * + * @param[in] ErrorData Details about the error condition. + * @param[in] StdHeader Config handle for library and services. + * + */ +VOID +STATIC +F14PmPwrCheckCore ( + IN VOID *ErrorData, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 i; + UINT8 PsMaxVal; + UINT8 DisPsNum; + UINT8 CurrentPs; + UINT64 MsrRegister; + CPU_SPECIFIC_SERVICES *FamilySpecificServices; + + GetCpuServicesOfCurrentCore (&FamilySpecificServices, StdHeader); + + PsMaxVal = (((PWRCHK_ERROR_DATA *) ErrorData)->HwPstateNumber - 1); + DisPsNum = (((PWRCHK_ERROR_DATA *) ErrorData)->HwPstateNumber - + ((PWRCHK_ERROR_DATA *) ErrorData)->AllowablePstateNumber); + + LibAmdMsrRead (MSR_PSTATE_STS, &MsrRegister, StdHeader); + CurrentPs = (UINT8) (((PSTATE_STS_MSR *) &MsrRegister)->CurPstate); + + if (((PWRCHK_ERROR_DATA *) ErrorData)->AllowablePstateNumber == 0) { + + // Step 1 + // Transition to Pstate Max if not there already + + if (CurrentPs != PsMaxVal) { + FamilySpecificServices->TransitionPstate (FamilySpecificServices, PsMaxVal, (BOOLEAN) TRUE, StdHeader); + } + + + // Step 2 + // If Pstate Max is not P0, copy Pstate max contents to P0 and switch + // to P0. + + if (PsMaxVal != 0) { + F14PmPwrChkCopyPstate (0, PsMaxVal, StdHeader); + FamilySpecificServices->TransitionPstate (FamilySpecificServices, (UINT8) 0, (BOOLEAN) TRUE, StdHeader); + } + } else { + + // move remaining P-state register(s) up + // Step 1 + // Transition to a valid Pstate if current Pstate has been disabled + + if (CurrentPs < DisPsNum) { + FamilySpecificServices->TransitionPstate (FamilySpecificServices, DisPsNum, (BOOLEAN) TRUE, StdHeader); + CurrentPs = DisPsNum; + } + + // Step 2 + // Move enabled Pstates up and disable the remainder + + for (i = 0; (i + DisPsNum) <= PsMaxVal; ++i) { + F14PmPwrChkCopyPstate (i, (i + DisPsNum), StdHeader); + } + + // Step 3 + // Transition to current COF/VID at shifted location + + CurrentPs = (CurrentPs - DisPsNum); + FamilySpecificServices->TransitionPstate (FamilySpecificServices, CurrentPs, (BOOLEAN) TRUE, StdHeader); + } + i = ((PWRCHK_ERROR_DATA *) ErrorData)->AllowablePstateNumber; + if (i == 0) { + i++; + } + while (i <= PsMaxVal) { + FamilySpecificServices->DisablePstate (FamilySpecificServices, i, StdHeader); + i++; + } +} + + +/*---------------------------------------------------------------------------------------*/ +/** + * Copies the contents of one P-State MSR to another. + * + * @param[in] Dest Destination p-state number + * @param[in] Src Source p-state number + * @param[in] StdHeader Config handle for library and services + * + */ +VOID +STATIC +F14PmPwrChkCopyPstate ( + IN UINT8 Dest, + IN UINT8 Src, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT64 MsrRegister; + + LibAmdMsrRead ((UINT32) (PS_REG_BASE + Src), &MsrRegister, StdHeader); + LibAmdMsrWrite ((UINT32) (PS_REG_BASE + Dest), &MsrRegister, StdHeader); +} + |