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UefiCpuPkg/MpInitLib: Implementation of MpInitLibStartupThisAP() 

v4:
  1. Simply the internal function StartupThisAPWorker()'s comment
     header due to it is duplicated with MpInitLibStartupThisAP().

v3:
  1. Use CamelCase for mStopCheckAllApsStatus and
     CheckAndUpdateApsStatus().

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Michael Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Jeff Fan 2016-07-21 21:31:47 +08:00
parent 08085f08ec
commit 20ae57745b
4 changed files with 176 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
View File

@ -390,7 +390,25 @@ MpInitLibStartupThisAP (
OUT BOOLEAN *Finished OPTIONAL
)
{
return EFI_UNSUPPORTED;
EFI_STATUS Status;
//
// temporarily stop checkAllApsStatus for avoid resource dead-lock.
//
mStopCheckAllApsStatus = TRUE;
Status = StartupThisAPWorker (
Procedure,
ProcessorNumber,
WaitEvent,
TimeoutInMicroseconds,
ProcedureArgument,
Finished
);
mStopCheckAllApsStatus = FALSE;
return Status;
}
/**

112
UefiCpuPkg/Library/MpInitLib/MpLib.c
View File

@ -1719,6 +1719,118 @@ MpInitLibGetNumberOfProcessors (
}
/**
Worker function to let the caller get one enabled AP to execute a caller-provided
function.
@param[in] Procedure A pointer to the function to be run on
enabled APs of the system.
@param[in] ProcessorNumber The handle number of the AP.
@param[in] WaitEvent The event created by the caller with CreateEvent()
service.
@param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for
APs to return from Procedure, either for
blocking or non-blocking mode.
@param[in] ProcedureArgument The parameter passed into Procedure for
all APs.
@param[out] Finished If AP returns from Procedure before the
timeout expires, its content is set to TRUE.
Otherwise, the value is set to FALSE.
@retval EFI_SUCCESS In blocking mode, specified AP finished before
the timeout expires.
@retval others Failed to Startup AP.
**/
EFI_STATUS
StartupThisAPWorker (
IN EFI_AP_PROCEDURE Procedure,
IN UINTN ProcessorNumber,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
OUT BOOLEAN *Finished OPTIONAL
)
{
EFI_STATUS Status;
CPU_MP_DATA *CpuMpData;
CPU_AP_DATA *CpuData;
UINTN CallerNumber;
CpuMpData = GetCpuMpData ();
if (Finished != NULL) {
*Finished = FALSE;
}
//
// Check whether caller processor is BSP
//
MpInitLibWhoAmI (&CallerNumber);
if (CallerNumber != CpuMpData->BspNumber) {
return EFI_DEVICE_ERROR;
}
//
// Check whether processor with the handle specified by ProcessorNumber exists
//
if (ProcessorNumber >= CpuMpData->CpuCount) {
return EFI_NOT_FOUND;
}
//
// Check whether specified processor is BSP
//
if (ProcessorNumber == CpuMpData->BspNumber) {
return EFI_INVALID_PARAMETER;
}
//
// Check parameter Procedure
//
if (Procedure == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Update AP state
//
CheckAndUpdateApsStatus ();
//
// Check whether specified AP is disabled
//
if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateDisabled) {
return EFI_INVALID_PARAMETER;
}
//
// If WaitEvent is not NULL, execute in non-blocking mode.
// BSP saves data for CheckAPsStatus(), and returns EFI_SUCCESS.
// CheckAPsStatus() will check completion and timeout periodically.
//
CpuData = &CpuMpData->CpuData[ProcessorNumber];
CpuData->WaitEvent = WaitEvent;
CpuData->Finished = Finished;
CpuData->ExpectedTime = CalculateTimeout (TimeoutInMicroseconds, &CpuData->CurrentTime);
CpuData->TotalTime = 0;
WakeUpAP (CpuMpData, FALSE, ProcessorNumber, Procedure, ProcedureArgument);
//
// If WaitEvent is NULL, execute in blocking mode.
// BSP checks AP's state until it finishes or TimeoutInMicrosecsond expires.
//
Status = EFI_SUCCESS;
if (WaitEvent == NULL) {
do {
Status = CheckThisAP (ProcessorNumber);
} while (Status == EFI_NOT_READY);
}
return Status;
}
/**
Get pointer to CPU MP Data structure from GUIDed HOB.

33
UefiCpuPkg/Library/MpInitLib/MpLib.h
View File

@ -347,6 +347,39 @@ InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
);
/**
Worker function to let the caller get one enabled AP to execute a caller-provided
function.
@param[in] Procedure A pointer to the function to be run on
enabled APs of the system.
@param[in] ProcessorNumber The handle number of the AP.
@param[in] WaitEvent The event created by the caller with CreateEvent()
service.
@param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for
APs to return from Procedure, either for
blocking or non-blocking mode.
@param[in] ProcedureArgument The parameter passed into Procedure for
all APs.
@param[out] Finished If AP returns from Procedure before the
timeout expires, its content is set to TRUE.
Otherwise, the value is set to FALSE.
@retval EFI_SUCCESS In blocking mode, specified AP finished before
the timeout expires.
@retval others Failed to Startup AP.
**/
EFI_STATUS
StartupThisAPWorker (
IN EFI_AP_PROCEDURE Procedure,
IN UINTN ProcessorNumber,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
OUT BOOLEAN *Finished OPTIONAL
);
/**
Worker function to switch the requested AP to be the BSP from that point onward.

11
UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
View File

@ -538,7 +538,18 @@ MpInitLibStartupThisAP (
OUT BOOLEAN *Finished OPTIONAL
)
{
if (WaitEvent != NULL) {
return EFI_UNSUPPORTED;
}
return StartupThisAPWorker (
Procedure,
ProcessorNumber,
NULL,
TimeoutInMicroseconds,
ProcedureArgument,
Finished
);
}
/**