C++ (Cpp) ReleaseMpSpinLock Examples

Example #1

File: DebugMp.c Project: baranee/edk2

/**
  Check if the specified processor is BSP or not.

  @param[in] ProcessorIndex Processor index value.

  @retval TRUE    It is BSP.
  @retval FALSE   It isn't BSP.

**/
BOOLEAN
IsBsp (
  IN UINT32  ProcessorIndex
  )
{
  MSR_IA32_APIC_BASE_REGISTER  MsrApicBase;
  
  //
  // If there are less than 2 CPUs detected, then the currently executing CPU
  // must be the BSP.  This avoids an access to an MSR that may not be supported 
  // on single core CPUs.
  //
  if (mDebugCpuData.CpuCount < 2) {
    return TRUE;
  }

  MsrApicBase.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);
  if (MsrApicBase.Bits.BSP == 1) {
    if (mDebugMpContext.BspIndex != ProcessorIndex) {
      AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);
      mDebugMpContext.BspIndex = ProcessorIndex;
      ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
    }
    return TRUE;
  } else {
    return FALSE;
  }
}

Example #2

File: DebugMp.c Project: baranee/edk2

/**
  Get the current processor's index.

  @return Processor index value.

**/
UINT32
GetProcessorIndex (
  VOID
  )
{
  UINT32                Index;
  UINT16                LocalApicID;

  LocalApicID = (UINT16) GetApicId ();

  AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);

  for (Index = 0; Index < mDebugCpuData.CpuCount; Index ++) {
    if (mDebugCpuData.ApicID[Index] == LocalApicID) {
      break;
    }
  }

  if (Index == mDebugCpuData.CpuCount) {
    mDebugCpuData.ApicID[Index] = LocalApicID;
    mDebugCpuData.CpuCount ++ ;
  }

  ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);

  return Index;
}

Example #3

File: DebugMp.c Project: baranee/edk2

/**
  Set the IPI send by BPS/AP flag.

  @param[in] IpiSentByApFlag   TRUE means this IPI is sent by AP.
                               FALSE means this IPI is sent by BSP.

**/
VOID
SetIpiSentByApFlag (
  IN BOOLEAN            IpiSentByApFlag
  )
{
  AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);
  mDebugMpContext.IpiSentByAp = IpiSentByApFlag;
  ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
}

Example #4

File: DebugMp.c Project: baranee/edk2

/**
  Set the current view point to be debugged.

  @param[in] ProcessorIndex   Processor index value.

**/
VOID
SetDebugViewPoint (
  IN UINT32             ProcessorIndex
  )
{
  AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);
  mDebugMpContext.ViewPointIndex = ProcessorIndex;
  ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
}

Example #5

File: DebugMp.c Project: baranee/edk2

/**
  Set the run command flag.

  @param[in] RunningFlag   TRUE means run command flag is set.
                           FALSE means run command flag is cleared.

**/
VOID
SetCpuRunningFlag (
  IN BOOLEAN            RunningFlag
  )
{
  AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);
  mDebugMpContext.RunCommandSet = RunningFlag;
  ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
}

Example #6

File: DxeDebugAgentLib.c Project: killvxk/edk2

/**
  Get Debug Agent Mailbox pointer.

  @return Mailbox pointer.

**/
DEBUG_AGENT_MAILBOX *
GetMailboxPointer (
  VOID
  )
{
  AcquireMpSpinLock (&mDebugMpContext.MailboxSpinLock);
  VerifyMailboxChecksum (mMailboxPointer);
  ReleaseMpSpinLock (&mDebugMpContext.MailboxSpinLock);
  return mMailboxPointer;
}

Example #7

File: DebugMp.c Project: baranee/edk2

/**
  Set processor break flag bitmask in MP context.

  @param[in] ProcessorIndex Processor index value.
  @param[in] BreakFlag      TRUE means set break flag.
                            FALSE means clean break flag.

**/
VOID
SetCpuBreakFlagByIndex (
  IN UINT32             ProcessorIndex,
  IN BOOLEAN            BreakFlag
  )
{
  UINT8                 Value;
  UINTN                 Index;

  AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);

  Value = mDebugMpContext.CpuBreakMask[ProcessorIndex / 8];
  Index = ProcessorIndex % 8;
  if (BreakFlag) {
    Value = BitFieldWrite8 (Value, Index, Index, 1);
  } else {
    Value = BitFieldWrite8 (Value, Index, Index, 0);
  }
  mDebugMpContext.CpuBreakMask[ProcessorIndex / 8] = Value;

  ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
}