/**
* Core-level error handler called if any p-states were determined to be out
* of range for the mother board.
*
* This function implements steps 2a-c and 3a-c on each core.
*
* @param[in] ErrorData Details about the error condition.
* @param[in] StdHeader Config handle for library and services.
*
*/
VOID
STATIC
F10PmPwrCheckCore (
IN VOID *ErrorData,
IN AMD_CONFIG_PARAMS *StdHeader
)
{
UINT8 i;
UINT8 PsMaxVal;
UINT8 DisPsNum;
UINT8 CurrentPs;
UINT8 EnBsNum;
UINT64 LocalMsrRegister;
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);
EnBsNum = ((PWRCHK_ERROR_DATA *) ErrorData)->NumberofBoostStates;
LibAmdMsrRead (MSR_PSTATE_STS, &LocalMsrRegister, StdHeader);
CurrentPs = (UINT8) (((PSTATE_STS_MSR *) &LocalMsrRegister)->CurPstate);
if (((PWRCHK_ERROR_DATA *) ErrorData)->AllowablePstateNumber == 0) {
// Step 1
// Transition to Pstate Max if not there already
if ((CurrentPs + EnBsNum) != PsMaxVal) {
FamilySpecificServices->TransitionPstate (FamilySpecificServices, (PsMaxVal - EnBsNum), (BOOLEAN) TRUE, StdHeader);
}
// Step 2
// If Pstate Max is not 000b, copy Pstate max contents to P0 and switch
// to P0. This step uses software P-state numbering
if (PsMaxVal != 0) {
F10PmPwrChkCopyPstate (EnBsNum, 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 + EnBsNum) < DisPsNum) {
FamilySpecificServices->TransitionPstate (FamilySpecificServices, (DisPsNum - EnBsNum), (BOOLEAN) TRUE, StdHeader);
CurrentPs = DisPsNum - EnBsNum;
}
// Step 2
// Move enabled Pstates up and disable the remainder. This step uses software P-state numbering.
if (DisPsNum > EnBsNum) {
for (i = 0; (i + DisPsNum) <= PsMaxVal; ++i) {
F10PmPwrChkCopyPstate ((i + EnBsNum), (i + DisPsNum), StdHeader);
}
}
// Step 3
// Transition to current COF/VID at shifted location
CurrentPs = ((CurrentPs + EnBsNum) - 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;
}
}
/**
* Core-level error handler called if any p-states were determined to be out
* of range for the mother board.
*
* This function implements steps 2a-c and 3a-c on each core.
*
* @param[in] ErrorData Details about the error condition.
* @param[in] StdHeader Config handle for library and services.
*
*/
VOID
STATIC
F15PmPwrCheckCore (
IN VOID *ErrorData,
IN AMD_CONFIG_PARAMS *StdHeader
)
{
UINT8 i;
UINT8 HwPsMaxVal;
UINT8 SwPsMaxVal;
UINT8 HwDisPsNum;
UINT8 CurrentSwPs;
UINT8 PsDisableCount;
UINT64 LocalMsrRegister;
CPU_SPECIFIC_SERVICES *FamilySpecificServices;
if (IsCoreComputeUnitPrimary (FirstCoreIsComputeUnitPrimary, StdHeader)) {
// P-state MSRs are shared, so only 1 core per compute unit needs to perform this
GetCpuServicesOfCurrentCore (&FamilySpecificServices, StdHeader);
HwPsMaxVal = (((PWRCHK_ERROR_DATA *) ErrorData)->HwPstateNumber - 1);
HwDisPsNum = (((PWRCHK_ERROR_DATA *) ErrorData)->HwPstateNumber -
((PWRCHK_ERROR_DATA *) ErrorData)->AllowablePstateNumber);
LibAmdMsrRead (MSR_PSTATE_STS, &LocalMsrRegister, StdHeader);
CurrentSwPs = (UINT8) (((PSTATE_STS_MSR *) &LocalMsrRegister)->CurPstate);
LibAmdMsrRead (MSR_PSTATE_CURRENT_LIMIT, &LocalMsrRegister, StdHeader);
SwPsMaxVal = (UINT8) (((PSTATE_CURLIM_MSR *) &LocalMsrRegister)->PstateMaxVal);
PsDisableCount = 0;
if (((PWRCHK_ERROR_DATA *) ErrorData)->AllowablePstateNumber == 0) {
// All P-States are over the limit.
// Step 1
// Transition to Pstate Max if not there already
if (CurrentSwPs != SwPsMaxVal) {
FamilySpecificServices->TransitionPstate (FamilySpecificServices, SwPsMaxVal, (BOOLEAN) TRUE, StdHeader);
}
// Step 2
// If Pstate Max is not P0, copy Pstate max contents to P0 and switch
// to P0.
if (SwPsMaxVal != 0) {
F15PmPwrChkCopyPstate (((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfBoostStates, HwPsMaxVal, StdHeader);
FamilySpecificServices->TransitionPstate (FamilySpecificServices, (UINT8) 0, (BOOLEAN) TRUE, StdHeader);
}
// Disable all SW P-states except P0
PsDisableCount = ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled - 1;
} else {
// At least one P-State is under the limit & at least one P-State is
// over the limit.
if (((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfBoostStates > HwDisPsNum) {
// A subset of boosted P-states are disabled. Copy the contents of the
// highest performance boosted P-state still enabled to the boosted
// P-states that have been disabled.
for (i = 0; i < HwDisPsNum; i++) {
F15PmPwrChkCopyPstate (i, HwDisPsNum, StdHeader);
}
} else if (((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled != 0) {
// Move remaining P-state register(s) up
// Step 1
// Transition to a valid Pstate if current Pstate has been disabled
if (CurrentSwPs < ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled) {
FamilySpecificServices->TransitionPstate (FamilySpecificServices, ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled, (BOOLEAN) TRUE, StdHeader);
CurrentSwPs = ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled;
}
// Step 2
// Move enabled Pstates up and disable the remainder
for (i = ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfBoostStates; (i + ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled) <= HwPsMaxVal; i++) {
F15PmPwrChkCopyPstate (i, (i + ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled), StdHeader);
}
// Step 3
// Transition to current COF/VID at shifted location
CurrentSwPs = (CurrentSwPs - ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled);
FamilySpecificServices->TransitionPstate (FamilySpecificServices, CurrentSwPs, (BOOLEAN) TRUE, StdHeader);
// Disable the appropriate number of P-states
PsDisableCount = ((PWRCHK_ERROR_DATA *) ErrorData)->NumberOfSwPstatesDisabled;
}
}
// Disable the appropriate P-states if any, starting from HW Pmin
for (i = 0; i < PsDisableCount; i++) {
FamilySpecificServices->DisablePstate (FamilySpecificServices, (HwPsMaxVal - i), StdHeader);
}
}
}
