diff options
Diffstat (limited to 'SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugMp.c')
| -rw-r--r-- | SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugMp.c | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugMp.c b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugMp.c deleted file mode 100644 index bdb6742811..0000000000 --- a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugMp.c +++ /dev/null @@ -1,380 +0,0 @@ -/** @file
- Multi-Processor support functions implementation.
-
- Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php.
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "DebugAgent.h"
-
-GLOBAL_REMOVE_IF_UNREFERENCED DEBUG_MP_CONTEXT volatile mDebugMpContext = {0,0,0,{0},{0},0,0,0,0,FALSE,FALSE};
-
-GLOBAL_REMOVE_IF_UNREFERENCED DEBUG_CPU_DATA volatile mDebugCpuData = {0};
-
-/**
- Acquire a spin lock when Multi-processor supported.
-
- It will block in the function if cannot get the access control.
- If Multi-processor is not supported, return directly.
-
- @param[in, out] MpSpinLock A pointer to the spin lock.
-
-**/
-VOID
-AcquireMpSpinLock (
- IN OUT SPIN_LOCK *MpSpinLock
- )
-{
- if (!MultiProcessorDebugSupport()) {
- return;
- }
-
- while (TRUE) {
- if (AcquireSpinLockOrFail (MpSpinLock)) {
- break;
- }
- CpuPause ();
- continue;
- }
-}
-
-/**
- Release a spin lock when Multi-processor supported.
-
- @param[in, out] MpSpinLock A pointer to the spin lock.
-
-**/
-VOID
-ReleaseMpSpinLock (
- IN OUT SPIN_LOCK *MpSpinLock
- )
-{
- if (!MultiProcessorDebugSupport()) {
- return;
- }
-
- ReleaseSpinLock (MpSpinLock);
-}
-
-/**
- Break the other processor by send IPI.
-
- @param[in] CurrentProcessorIndex Current processor index value.
-
-**/
-VOID
-HaltOtherProcessors (
- IN UINT32 CurrentProcessorIndex
- )
-{
- DebugAgentMsgPrint (DEBUG_AGENT_INFO, "processor[%x]:Try to halt other processors.\n", CurrentProcessorIndex);
- if (!IsBsp (CurrentProcessorIndex)) {
- SetIpiSentByApFlag (TRUE);;
- }
-
- mDebugMpContext.BreakAtCpuIndex = CurrentProcessorIndex;
-
- //
- // Set the debug viewpoint to the current breaking CPU.
- //
- SetDebugViewPoint (CurrentProcessorIndex);
-
- //
- // Send fixed IPI to other processors.
- //
- SendFixedIpiAllExcludingSelf (DEBUG_TIMER_VECTOR);
-
-}
-
-/**
- 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;
-}
-
-/**
- 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
- )
-{
- //
- // 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;
- }
-
- if (AsmMsrBitFieldRead64 (MSR_IA32_APIC_BASE_ADDRESS, 8, 8) == 1) {
- if (mDebugMpContext.BspIndex != ProcessorIndex) {
- AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);
- mDebugMpContext.BspIndex = ProcessorIndex;
- ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
- }
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-/**
- Set processor stop flag bitmask in MP context.
-
- @param[in] ProcessorIndex Processor index value.
- @param[in] StopFlag TRUE means set stop flag.
- FALSE means clean break flag.
-
-**/
-VOID
-SetCpuStopFlagByIndex (
- IN UINT32 ProcessorIndex,
- IN BOOLEAN StopFlag
- )
-{
- UINT8 Value;
- UINTN Index;
-
- AcquireMpSpinLock (&mDebugMpContext.MpContextSpinLock);
-
- Value = mDebugMpContext.CpuStopStatusMask[ProcessorIndex / 8];
- Index = ProcessorIndex % 8;
- if (StopFlag) {
- Value = BitFieldWrite8 (Value, Index, Index, 1);
- } else {
- Value = BitFieldWrite8 (Value, Index, Index, 0);
- }
- mDebugMpContext.CpuStopStatusMask[ProcessorIndex / 8] = Value;
-
- ReleaseMpSpinLock (&mDebugMpContext.MpContextSpinLock);
-}
-
-/**
- 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);
-}
-
-/**
- Check if processor is stopped already.
-
- @param[in] ProcessorIndex Processor index value.
-
- @retval TRUE Processor is stopped already.
- @retval TRUE Processor isn't stopped.
-
-**/
-BOOLEAN
-IsCpuStopped (
- IN UINT32 ProcessorIndex
- )
-{
- UINT8 CpuMask;
-
- CpuMask = (UINT8) (1 << (ProcessorIndex % 8));
-
- if ((mDebugMpContext.CpuStopStatusMask[ProcessorIndex / 8] & CpuMask) != 0) {
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-/**
- 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);
-}
-
-/**
- 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);
-}
-
-/**
- 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);
-}
-
-/**
- Check the next pending breaking CPU.
-
- @retval others There is at least one processor broken, the minimum
- index number of Processor returned.
- @retval -1 No any processor broken.
-
-**/
-UINT32
-FindNextPendingBreakCpu (
- VOID
- )
-{
- UINT32 Index;
-
- for (Index = 0; Index < DEBUG_CPU_MAX_COUNT / 8; Index ++) {
- if (mDebugMpContext.CpuBreakMask[Index] != 0) {
- return (UINT32) LowBitSet32 (mDebugMpContext.CpuBreakMask[Index]) + Index * 8;
- }
- }
- return (UINT32)-1;
-}
-
-/**
- Check if all processors are in running status.
-
- @retval TRUE All processors run.
- @retval FALSE At least one processor does not run.
-
-**/
-BOOLEAN
-IsAllCpuRunning (
- VOID
- )
-{
- UINTN Index;
-
- for (Index = 0; Index < DEBUG_CPU_MAX_COUNT / 8; Index ++) {
- if (mDebugMpContext.CpuStopStatusMask[Index] != 0) {
- return FALSE;
- }
- }
- return TRUE;
-}
-
-/**
- Check if the current processor is the first breaking processor.
-
- If yes, halt other processors.
-
- @param[in] ProcessorIndex Processor index value.
-
- @return TRUE This processor is the first breaking processor.
- @return FALSE This processor is not the first breaking processor.
-
-**/
-BOOLEAN
-IsFirstBreakProcessor (
- IN UINT32 ProcessorIndex
- )
-{
- if (MultiProcessorDebugSupport()) {
- if (mDebugMpContext.BreakAtCpuIndex != (UINT32) -1) {
- //
- // The current processor is not the first breaking one.
- //
- SetCpuBreakFlagByIndex (ProcessorIndex, TRUE);
- return FALSE;
- } else {
- //
- // If no any processor breaks, try to halt other processors
- //
- HaltOtherProcessors (ProcessorIndex);
- return TRUE;
- }
- }
- return TRUE;
-}
-
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