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UefiCpuPkg/MpInitLib: Implementation of MpInitLibStartupAllAPs() 

v4:
  1. Simply the internal function StartupAllAPsWorker()'s function
     header due to it is duplicated with MpInitLibStartupAllAPs().
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 21:33:11 +08:00
parent 20ae57745b
commit 86efe97693
4 changed files with 233 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
View File

@ -305,7 +305,28 @@ MpInitLibStartupAllAPs (
OUT UINTN **FailedCpuList OPTIONAL OUT UINTN **FailedCpuList OPTIONAL
) )
{ {
return EFI_UNSUPPORTED; EFI_STATUS Status;
//
// Temporarily stop checkAllApsStatus for avoid resource dead-lock.
//
mStopCheckAllApsStatus = TRUE;
Status = StartupAllAPsWorker (
Procedure,
SingleThread,
WaitEvent,
TimeoutInMicroseconds,
ProcedureArgument,
FailedCpuList
);
//
// Start checkAllApsStatus
//
mStopCheckAllApsStatus = FALSE;
return Status;
} }
/** /**

158
UefiCpuPkg/Library/MpInitLib/MpLib.c
View File

@ -1719,6 +1719,164 @@ MpInitLibGetNumberOfProcessors (
} }
/**
Worker function to execute a caller provided function on all enabled APs.
@param[in] Procedure A pointer to the function to be run on
enabled APs of the system.
@param[in] SingleThread If TRUE, then all the enabled APs execute
the function specified by Procedure one by
one, in ascending order of processor handle
number. If FALSE, then all the enabled APs
execute the function specified by Procedure
simultaneously.
@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] FailedCpuList If all APs finish successfully, then its
content is set to NULL. If not all APs
finish before timeout expires, then its
content is set to address of the buffer
holding handle numbers of the failed APs.
@retval EFI_SUCCESS In blocking mode, all APs have finished before
the timeout expired.
@retval EFI_SUCCESS In non-blocking mode, function has been dispatched
to all enabled APs.
@retval others Failed to Startup all APs.
**/
EFI_STATUS
StartupAllAPsWorker (
IN EFI_AP_PROCEDURE Procedure,
IN BOOLEAN SingleThread,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
OUT UINTN **FailedCpuList OPTIONAL
)
{
EFI_STATUS Status;
CPU_MP_DATA *CpuMpData;
UINTN ProcessorCount;
UINTN ProcessorNumber;
UINTN CallerNumber;
CPU_AP_DATA *CpuData;
BOOLEAN HasEnabledAp;
CPU_STATE ApState;
CpuMpData = GetCpuMpData ();
if (FailedCpuList != NULL) {
*FailedCpuList = NULL;
}
if (CpuMpData->CpuCount == 1) {
return EFI_NOT_STARTED;
}
if (Procedure == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check whether caller processor is BSP
//
MpInitLibWhoAmI (&CallerNumber);
if (CallerNumber != CpuMpData->BspNumber) {
return EFI_DEVICE_ERROR;
}
//
// Update AP state
//
CheckAndUpdateApsStatus ();
ProcessorCount = CpuMpData->CpuCount;
HasEnabledAp = FALSE;
//
// Check whether all enabled APs are idle.
// If any enabled AP is not idle, return EFI_NOT_READY.
//
for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {
CpuData = &CpuMpData->CpuData[ProcessorNumber];
if (ProcessorNumber != CpuMpData->BspNumber) {
ApState = GetApState (CpuData);
if (ApState != CpuStateDisabled) {
HasEnabledAp = TRUE;
if (ApState != CpuStateIdle) {
//
// If any enabled APs are busy, return EFI_NOT_READY.
//
return EFI_NOT_READY;
}
}
}
}
if (!HasEnabledAp) {
//
// If no enabled AP exists, return EFI_NOT_STARTED.
//
return EFI_NOT_STARTED;
}
CpuMpData->StartCount = 0;
for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {
CpuData = &CpuMpData->CpuData[ProcessorNumber];
CpuData->Waiting = FALSE;
if (ProcessorNumber != CpuMpData->BspNumber) {
if (CpuData->State == CpuStateIdle) {
//
// Mark this processor as responsible for current calling.
//
CpuData->Waiting = TRUE;
CpuMpData->StartCount++;
}
}
}
CpuMpData->Procedure = Procedure;
CpuMpData->ProcArguments = ProcedureArgument;
CpuMpData->SingleThread = SingleThread;
CpuMpData->FinishedCount = 0;
CpuMpData->RunningCount = 0;
CpuMpData->FailedCpuList = FailedCpuList;
CpuMpData->ExpectedTime = CalculateTimeout (
TimeoutInMicroseconds,
&CpuMpData->CurrentTime
);
CpuMpData->TotalTime = 0;
CpuMpData->WaitEvent = WaitEvent;
if (!SingleThread) {
WakeUpAP (CpuMpData, TRUE, 0, Procedure, ProcedureArgument);
} else {
for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {
if (ProcessorNumber == CallerNumber) {
continue;
}
if (CpuMpData->CpuData[ProcessorNumber].Waiting) {
WakeUpAP (CpuMpData, FALSE, ProcessorNumber, Procedure, ProcedureArgument);
break;
}
}
}
Status = EFI_SUCCESS;
if (WaitEvent == NULL) {
do {
Status = CheckAllAPs ();
} while (Status == EFI_NOT_READY);
}
return Status;
}
/** /**
Worker function to let the caller get one enabled AP to execute a caller-provided Worker function to let the caller get one enabled AP to execute a caller-provided
function. function.

41
UefiCpuPkg/Library/MpInitLib/MpLib.h
View File

@ -347,6 +347,47 @@ InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData IN CPU_MP_DATA *CpuMpData
); );
/**
Worker function to execute a caller provided function on all enabled APs.
@param[in] Procedure A pointer to the function to be run on
enabled APs of the system.
@param[in] SingleThread If TRUE, then all the enabled APs execute
the function specified by Procedure one by
one, in ascending order of processor handle
number. If FALSE, then all the enabled APs
execute the function specified by Procedure
simultaneously.
@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] FailedCpuList If all APs finish successfully, then its
content is set to NULL. If not all APs
finish before timeout expires, then its
content is set to address of the buffer
holding handle numbers of the failed APs.
@retval EFI_SUCCESS In blocking mode, all APs have finished before
the timeout expired.
@retval EFI_SUCCESS In non-blocking mode, function has been dispatched
to all enabled APs.
@retval others Failed to Startup all APs.
**/
EFI_STATUS
StartupAllAPsWorker (
IN EFI_AP_PROCEDURE Procedure,
IN BOOLEAN SingleThread,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
OUT UINTN **FailedCpuList OPTIONAL
);
/** /**
Worker function to let the caller get one enabled AP to execute a caller-provided Worker function to let the caller get one enabled AP to execute a caller-provided
function. function.

13
UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
View File

@ -453,7 +453,18 @@ MpInitLibStartupAllAPs (
OUT UINTN **FailedCpuList OPTIONAL OUT UINTN **FailedCpuList OPTIONAL
) )
{ {
return EFI_UNSUPPORTED; if (WaitEvent != NULL) {
return EFI_UNSUPPORTED;
}
return StartupAllAPsWorker (
Procedure,
SingleThread,
NULL,
TimeoutInMicroseconds,
ProcedureArgument,
FailedCpuList
);
} }
/** /**