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UefiCpuPkg/MpService: Simply Lock usage 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16363 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Chen Fan 2014-11-13 18:28:33 +00:00 committed by jljusten
parent acb2172d15
commit d16cf36d2a
1 changed files with 47 additions and 42 deletions
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89
UefiCpuPkg/CpuDxe/CpuMp.c
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@ -37,6 +37,36 @@ EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
WhoAmI
};
/**
Get Mp Service Lock.
@param CpuData the pointer to CPU_DATA_BLOCK of specified processor
**/
VOID
GetMpSpinLock (
IN CPU_DATA_BLOCK *CpuData
)
{
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
}
/**
Release Mp Service Lock.
@param CpuData the pointer to CPU_DATA_BLOCK of specified processor
**/
VOID
ReleaseMpSpinLock (
IN CPU_DATA_BLOCK *CpuData
)
{
ReleaseSpinLock (&CpuData->CpuDataLock);
}
/**
Check whether caller processor is BSP.
@ -75,12 +105,9 @@ GetApState (
{
CPU_STATE State;
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
State = CpuData->State;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
return State;
}
@ -98,12 +125,9 @@ SetApState (
IN CPU_STATE State
)
{
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
CpuData->State = State;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
}
/**
@ -122,13 +146,10 @@ SetApProcedure (
IN VOID *ProcedureArgument
)
{
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
CpuData->Parameter = ProcedureArgument;
CpuData->Procedure = Procedure;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
}
/**
@ -149,12 +170,9 @@ TestCpuStatusFlag (
{
UINT32 Ret;
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
Ret = CpuData->Info.StatusFlag & Flags;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
return !!(Ret);
}
@ -172,12 +190,9 @@ CpuStatusFlagOr (
IN UINT32 Flags
)
{
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
CpuData->Info.StatusFlag |= Flags;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
}
/**
@ -193,12 +208,9 @@ CpuStatusFlagAndNot (
IN UINT32 Flags
)
{
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
CpuData->Info.StatusFlag &= ~Flags;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
}
/**
@ -1127,25 +1139,18 @@ ProcessorToIdleState (
AsmApDoneWithCommonStack ();
while (TRUE) {
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
ProcedureArgument = CpuData->Parameter;
Procedure = CpuData->Procedure;
ReleaseSpinLock (&CpuData->CpuDataLock);
ReleaseMpSpinLock (CpuData);
if (Procedure != NULL) {
Procedure (ProcedureArgument);
while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
CpuPause ();
}
GetMpSpinLock (CpuData);
CpuData->Procedure = NULL;
ReleaseSpinLock (&CpuData->CpuDataLock);
SetApState (CpuData, CpuStateFinished);
CpuData->State = CpuStateFinished;
ReleaseMpSpinLock (CpuData);
}
CpuPause ();