* [Patch v4 3/3] UefiCpuPkg: Enable Processor Trace feature.
[not found] <1501817823-13992-1-git-send-email-eric.dong@intel.com>
2017-08-04 3:37 ` [Patch v4 1/3] UefiCpuPkg: Add Pcds used by processor trace feature Eric Dong
2017-08-04 3:37 ` [Patch v4 2/3] UefiCpuPkg: Add Processor Trace feature definition Eric Dong
@ 2017-08-04 3:37 ` Eric Dong
2 siblings, 0 replies; 6+ messages in thread
From: Eric Dong @ 2017-08-04 3:37 UTC (permalink / raw)
To: edk2-devel; +Cc: Jeff Fan, Ruiyu Ni
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
---
.../CpuCommonFeaturesLib/CpuCommonFeatures.h | 66 +++
.../CpuCommonFeaturesLib/CpuCommonFeaturesLib.c | 11 +
.../CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf | 4 +-
.../Library/CpuCommonFeaturesLib/ProcTrace.c | 463 +++++++++++++++++++++
4 files changed, 543 insertions(+), 1 deletion(-)
create mode 100644 UefiCpuPkg/Library/CpuCommonFeaturesLib/ProcTrace.c
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeatures.h b/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeatures.h
index b8269b0..d04e214 100644
--- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeatures.h
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeatures.h
@@ -961,4 +961,70 @@ LmceInitialize (
IN BOOLEAN State
);
+/**
+ Prepares for the data used by CPU feature detection and initialization.
+
+ @param[in] NumberOfProcessors The number of CPUs in the platform.
+
+ @return Pointer to a buffer of CPU related configuration data.
+
+ @note This service could be called by BSP only.
+**/
+VOID *
+EFIAPI
+ProcTraceGetConfigData (
+ IN UINTN NumberOfProcessors
+ );
+
+/**
+ Detects if Intel Processor Trace feature supported on current processor.
+
+ @param[in] ProcessorNumber The index of the CPU executing this function.
+ @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
+ structure for the CPU executing this function.
+ @param[in] ConfigData A pointer to the configuration buffer returned
+ by CPU_FEATURE_GET_CONFIG_DATA. NULL if
+ CPU_FEATURE_GET_CONFIG_DATA was not provided in
+ RegisterCpuFeature().
+
+ @retval TRUE Processor Trace feature is supported.
+ @retval FALSE Processor Trace feature is not supported.
+
+ @note This service could be called by BSP/APs.
+**/
+BOOLEAN
+EFIAPI
+ProcTraceSupport (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData OPTIONAL
+ );
+
+/**
+ Initializes Intel Processor Trace feature to specific state.
+
+ @param[in] ProcessorNumber The index of the CPU executing this function.
+ @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
+ structure for the CPU executing this function.
+ @param[in] ConfigData A pointer to the configuration buffer returned
+ by CPU_FEATURE_GET_CONFIG_DATA. NULL if
+ CPU_FEATURE_GET_CONFIG_DATA was not provided in
+ RegisterCpuFeature().
+ @param[in] State If TRUE, then the Processor Trace feature must be
+ enabled.
+ If FALSE, then the Processor Trace feature must be
+ disabled.
+
+ @retval RETURN_SUCCESS Intel Processor Trace feature is initialized.
+
+**/
+RETURN_STATUS
+EFIAPI
+ProcTraceInitialize (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData, OPTIONAL
+ IN BOOLEAN State
+ );
+
#endif
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.c b/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.c
index 4c78209..bbaffc5 100644
--- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.c
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.c
@@ -229,6 +229,17 @@ CpuCommonFeaturesLibConstructor (
);
ASSERT_EFI_ERROR (Status);
}
+ if (IsCpuFeatureSupported (CPU_FEATURE_PROC_TRACE)) {
+ Status = RegisterCpuFeature (
+ "Proc Trace",
+ ProcTraceGetConfigData,
+ ProcTraceSupport,
+ ProcTraceInitialize,
+ CPU_FEATURE_PROC_TRACE,
+ CPU_FEATURE_END
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
return RETURN_SUCCESS;
}
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf b/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf
index 2cca58e..9fc3a9c 100644
--- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf
@@ -49,6 +49,7 @@
X2Apic.c
Ppin.c
Lmce.c
+ ProcTrace.c
[Packages]
MdePkg/MdePkg.dec
@@ -67,4 +68,5 @@
gUefiCpuPkgTokenSpaceGuid.PcdCpuFeaturesSupport ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuClockModulationDutyCycle ## SOMETIMES_CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdIsPowerOnReset ## SOMETIMES_CONSUMES
-
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuProcTraceOutputScheme ## SOMETIMES_CONSUMES
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuProcTraceMemSize ## SOMETIMES_CONSUMES
\ No newline at end of file
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ProcTrace.c b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ProcTrace.c
new file mode 100644
index 0000000..40e6321
--- /dev/null
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ProcTrace.c
@@ -0,0 +1,463 @@
+/** @file
+ Intel Processor Trace feature.
+
+ Copyright (c) 2017, 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 "CpuCommonFeatures.h"
+
+#define MAX_TOPA_ENTRY_COUNT 2
+
+///
+/// Processor trace buffer size selection.
+///
+typedef enum {
+ Enum4K = 0,
+ Enum8K,
+ Enum16K,
+ Enum32K,
+ Enum64K,
+ Enum128K,
+ Enum256K,
+ Enum512K,
+ Enum1M,
+ Enum2M,
+ Enum4M,
+ Enum8M,
+ Enum16M,
+ Enum32M,
+ Enum64M,
+ Enum128M,
+ EnumProcTraceMemDisable
+} PROC_TRACE_MEM_SIZE;
+
+///
+/// Processor trace output scheme selection.
+///
+typedef enum {
+ OutputSchemeSingleRange = 0,
+ OutputSchemeToPA,
+ OutputSchemeInvalid
+} PROC_TRACE_OUTPUT_SCHEME;
+
+typedef struct {
+ BOOLEAN ProcTraceSupported;
+ BOOLEAN TopaSupported;
+ BOOLEAN SingleRangeSupported;
+} PROC_TRACE_PROCESSOR_DATA;
+
+typedef struct {
+ UINT32 NumberOfProcessors;
+
+ UINT8 ProcTraceOutputScheme;
+ UINT32 ProcTraceMemSize;
+
+ UINTN *ThreadMemRegionTable;
+ UINTN AllocatedThreads;
+
+ UINTN *TopaMemArray;
+ UINTN TopaMemArrayCount;
+
+ PROC_TRACE_PROCESSOR_DATA *ProcessorData;
+} PROC_TRACE_DATA;
+
+typedef struct {
+ UINT64 TopaEntry[MAX_TOPA_ENTRY_COUNT];
+} PROC_TRACE_TOPA_TABLE;
+
+/**
+ Prepares for the data used by CPU feature detection and initialization.
+
+ @param[in] NumberOfProcessors The number of CPUs in the platform.
+
+ @return Pointer to a buffer of CPU related configuration data.
+
+ @note This service could be called by BSP only.
+**/
+VOID *
+EFIAPI
+ProcTraceGetConfigData (
+ IN UINTN NumberOfProcessors
+ )
+{
+ PROC_TRACE_DATA *ConfigData;
+
+ ConfigData = AllocateZeroPool (sizeof (PROC_TRACE_DATA) + sizeof (PROC_TRACE_PROCESSOR_DATA) * NumberOfProcessors);
+ ASSERT (ConfigData != NULL);
+ ConfigData->ProcessorData = (PROC_TRACE_PROCESSOR_DATA *) ((UINT8*) ConfigData + sizeof (PROC_TRACE_DATA));
+
+ ConfigData->NumberOfProcessors = (UINT32) NumberOfProcessors;
+ ConfigData->ProcTraceMemSize = PcdGet32 (PcdCpuProcTraceMemSize);
+ ConfigData->ProcTraceOutputScheme = PcdGet8 (PcdCpuProcTraceOutputScheme);
+
+ return ConfigData;
+}
+
+/**
+ Detects if Intel Processor Trace feature supported on current
+ processor.
+
+ @param[in] ProcessorNumber The index of the CPU executing this function.
+ @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
+ structure for the CPU executing this function.
+ @param[in] ConfigData A pointer to the configuration buffer returned
+ by CPU_FEATURE_GET_CONFIG_DATA. NULL if
+ CPU_FEATURE_GET_CONFIG_DATA was not provided in
+ RegisterCpuFeature().
+
+ @retval TRUE Processor Trace feature is supported.
+ @retval FALSE Processor Trace feature is not supported.
+
+ @note This service could be called by BSP/APs.
+**/
+BOOLEAN
+EFIAPI
+ProcTraceSupport (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData OPTIONAL
+ )
+{
+ PROC_TRACE_DATA *ProcTraceData;
+ CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS_EBX Ebx;
+ CPUID_INTEL_PROCESSOR_TRACE_MAIN_LEAF_ECX Ecx;
+
+ //
+ // Check if ProcTraceMemorySize option is enabled (0xFF means disable by user)
+ //
+ ProcTraceData = (PROC_TRACE_DATA *) ConfigData;
+ if ((ProcTraceData->ProcTraceMemSize >= EnumProcTraceMemDisable) ||
+ (ProcTraceData->ProcTraceOutputScheme >= OutputSchemeInvalid)) {
+ return FALSE;
+ }
+
+ //
+ // Check if Processor Trace is supported
+ //
+ AsmCpuidEx (CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS, 0, NULL, &Ebx.Uint32, NULL, NULL);
+ ProcTraceData->ProcessorData[ProcessorNumber].ProcTraceSupported = (BOOLEAN) (Ebx.Bits.IntelProcessorTrace == 1);
+ if (!ProcTraceData->ProcessorData[ProcessorNumber].ProcTraceSupported) {
+ return FALSE;
+ }
+
+ AsmCpuidEx (CPUID_INTEL_PROCESSOR_TRACE, CPUID_INTEL_PROCESSOR_TRACE_MAIN_LEAF, NULL, NULL, &Ecx.Uint32, NULL);
+ ProcTraceData->ProcessorData[ProcessorNumber].TopaSupported = (BOOLEAN) (Ecx.Bits.RTIT == 1);
+ ProcTraceData->ProcessorData[ProcessorNumber].SingleRangeSupported = (BOOLEAN) (Ecx.Bits.SingleRangeOutput == 1);
+ if (ProcTraceData->ProcessorData[ProcessorNumber].TopaSupported ||
+ ProcTraceData->ProcessorData[ProcessorNumber].SingleRangeSupported) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/**
+ Initializes Intel Processor Trace feature to specific state.
+
+ @param[in] ProcessorNumber The index of the CPU executing this function.
+ @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
+ structure for the CPU executing this function.
+ @param[in] ConfigData A pointer to the configuration buffer returned
+ by CPU_FEATURE_GET_CONFIG_DATA. NULL if
+ CPU_FEATURE_GET_CONFIG_DATA was not provided in
+ RegisterCpuFeature().
+ @param[in] State If TRUE, then the Processor Trace feature must be
+ enabled.
+ If FALSE, then the Processor Trace feature must be
+ disabled.
+
+ @retval RETURN_SUCCESS Intel Processor Trace feature is initialized.
+
+**/
+RETURN_STATUS
+EFIAPI
+ProcTraceInitialize (
+ IN UINTN ProcessorNumber,
+ IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
+ IN VOID *ConfigData, OPTIONAL
+ IN BOOLEAN State
+ )
+{
+ UINT64 MsrValue;
+ UINT32 MemRegionSize;
+ UINTN Pages;
+ UINTN Alignment;
+ UINTN MemRegionBaseAddr;
+ UINTN *ThreadMemRegionTable;
+ UINTN Index;
+ UINTN TopaTableBaseAddr;
+ UINTN AlignedAddress;
+ UINTN *TopaMemArray;
+ PROC_TRACE_TOPA_TABLE *TopaTable;
+ PROC_TRACE_DATA *ProcTraceData;
+ BOOLEAN FirstIn;
+
+ ProcTraceData = (PROC_TRACE_DATA *) ConfigData;
+
+ MemRegionBaseAddr = 0;
+ FirstIn = FALSE;
+
+ if (ProcTraceData->ThreadMemRegionTable == NULL) {
+ FirstIn = TRUE;
+ DEBUG ((DEBUG_INFO, "Initialize Processor Trace\n"));
+ }
+
+ ///
+ /// Refer to PROC_TRACE_MEM_SIZE Table for Size Encoding
+ ///
+ MemRegionSize = (UINT32) (1 << (ProcTraceData->ProcTraceMemSize + 12));
+ if (FirstIn) {
+ DEBUG ((DEBUG_INFO, "ProcTrace: MemSize requested: 0x%X \n", MemRegionSize));
+ }
+
+ //
+ // Clear MSR_IA32_RTIT_CTL[0] and IA32_RTIT_STS only if MSR_IA32_RTIT_CTL[0]==1b
+ //
+ MsrValue = AsmReadMsr64 (MSR_IA32_RTIT_CTL);
+ if ((MsrValue & BIT0) != 0) {
+ ///
+ /// Clear bit 0 in MSR IA32_RTIT_CTL (570)
+ ///
+ MsrValue &= (UINT64) ~BIT0;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_CTL,
+ MsrValue
+ );
+
+ ///
+ /// Clear MSR IA32_RTIT_STS (571h) to all zeros
+ ///
+ MsrValue = AsmReadMsr64 (MSR_IA32_RTIT_STATUS);
+ MsrValue &= 0x0;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_STATUS,
+ MsrValue
+ );
+ }
+
+ if (FirstIn) {
+ //
+ // Let BSP allocate and create the necessary memory region (Aligned to the size of
+ // the memory region from setup option(ProcTraceMemSize) which is an integral multiple of 4kB)
+ // for the all the enabled threads for storing Processor Trace debug data. Then Configure the trace
+ // address base in MSR, IA32_RTIT_OUTPUT_BASE (560h) bits 47:12. Note that all regions must be
+ // aligned based on their size, not just 4K. Thus a 2M region must have bits 20:12 clear.
+ //
+ ThreadMemRegionTable = (UINTN *) AllocatePool (ProcTraceData->NumberOfProcessors * sizeof (UINTN *));
+ if (ThreadMemRegionTable == NULL) {
+ DEBUG ((DEBUG_ERROR, "Allocate ProcTrace ThreadMemRegionTable Failed\n"));
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ ProcTraceData->ThreadMemRegionTable = ThreadMemRegionTable;
+
+ for (Index = 0; Index < ProcTraceData->NumberOfProcessors; Index++, ProcTraceData->AllocatedThreads++) {
+ Pages = EFI_SIZE_TO_PAGES (MemRegionSize);
+ Alignment = MemRegionSize;
+ AlignedAddress = (UINTN) AllocateAlignedReservedPages (Pages, Alignment);
+ if (AlignedAddress == 0) {
+ DEBUG ((DEBUG_ERROR, "ProcTrace: Out of mem, allocated only for %d threads\n", ProcTraceData->AllocatedThreads));
+ if (Index == 0) {
+ //
+ // Could not allocate for BSP even
+ //
+ FreePool ((VOID *) ThreadMemRegionTable);
+ ThreadMemRegionTable = NULL;
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ break;
+ }
+
+ ThreadMemRegionTable[Index] = AlignedAddress;
+ DEBUG ((DEBUG_INFO, "ProcTrace: PT MemRegionBaseAddr(aligned) for thread %d: 0x%llX \n", Index, (UINT64) ThreadMemRegionTable[Index]));
+ }
+
+ DEBUG ((DEBUG_INFO, "ProcTrace: Allocated PT mem for %d thread \n", ProcTraceData->AllocatedThreads));
+ MemRegionBaseAddr = ThreadMemRegionTable[0];
+ } else {
+ if (ProcessorNumber < ProcTraceData->AllocatedThreads) {
+ MemRegionBaseAddr = ProcTraceData->ThreadMemRegionTable[ProcessorNumber];
+ } else {
+ return RETURN_SUCCESS;
+ }
+ }
+
+ ///
+ /// Check Processor Trace output scheme: Single Range output or ToPA table
+ ///
+
+ //
+ // Single Range output scheme
+ //
+ if (ProcTraceData->ProcessorData[ProcessorNumber].SingleRangeSupported &&
+ (ProcTraceData->ProcTraceOutputScheme == OutputSchemeSingleRange)) {
+ if (FirstIn) {
+ DEBUG ((DEBUG_INFO, "ProcTrace: Enabling Single Range Output scheme \n"));
+ }
+
+ //
+ // Clear MSR IA32_RTIT_CTL (0x570) ToPA (Bit 8)
+ //
+ MsrValue = AsmReadMsr64 (MSR_IA32_RTIT_CTL);
+ MsrValue &= (UINT64) ~BIT8;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_CTL,
+ MsrValue
+ );
+
+ //
+ // Program MSR IA32_RTIT_OUTPUT_BASE (0x560) bits[47:12] with the allocated Memory Region
+ //
+ MsrValue = (UINT64) MemRegionBaseAddr;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_OUTPUT_BASE,
+ MsrValue
+ );
+
+ //
+ // Program the Mask bits for the Memory Region to MSR IA32_RTIT_OUTPUT_MASK_PTRS (561h)
+ //
+ MsrValue = (UINT64) MemRegionSize - 1;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_OUTPUT_MASK_PTRS,
+ MsrValue
+ );
+
+ }
+
+ //
+ // ToPA(Table of physical address) scheme
+ //
+ if (ProcTraceData->ProcessorData[ProcessorNumber].TopaSupported &&
+ (ProcTraceData->ProcTraceOutputScheme == OutputSchemeToPA)) {
+ //
+ // Create ToPA structure aligned at 4KB for each logical thread
+ // with at least 2 entries by 8 bytes size each. The first entry
+ // should have the trace output base address in bits 47:12, 6:9
+ // for Size, bits 4,2 and 0 must be cleared. The second entry
+ // should have the base address of the table location in bits
+ // 47:12, bits 4 and 2 must be cleared and bit 0 must be set.
+ //
+ if (FirstIn) {
+ DEBUG ((DEBUG_INFO, "ProcTrace: Enabling ToPA scheme \n"));
+ //
+ // Let BSP allocate ToPA table mem for all threads
+ //
+ TopaMemArray = (UINTN *) AllocatePool (ProcTraceData->AllocatedThreads * sizeof (UINTN *));
+ if (TopaMemArray == NULL) {
+ DEBUG ((DEBUG_ERROR, "ProcTrace: Allocate mem for ToPA Failed\n"));
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ ProcTraceData->TopaMemArray = TopaMemArray;
+
+ for (Index = 0; Index < ProcTraceData->AllocatedThreads; Index++) {
+ Pages = EFI_SIZE_TO_PAGES (sizeof (PROC_TRACE_TOPA_TABLE));
+ Alignment = 0x1000;
+ AlignedAddress = (UINTN) AllocateAlignedReservedPages (Pages, Alignment);
+ if (AlignedAddress == 0) {
+ if (Index < ProcTraceData->AllocatedThreads) {
+ ProcTraceData->AllocatedThreads = Index;
+ }
+ DEBUG ((DEBUG_ERROR, "ProcTrace: Out of mem, allocating ToPA mem only for %d threads\n", ProcTraceData->AllocatedThreads));
+ if (Index == 0) {
+ //
+ // Could not allocate for BSP
+ //
+ FreePool ((VOID *) TopaMemArray);
+ TopaMemArray = NULL;
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ break;
+ }
+
+ TopaMemArray[Index] = AlignedAddress;
+ DEBUG ((DEBUG_INFO, "ProcTrace: Topa table address(aligned) for thread %d is 0x%llX \n", Index, (UINT64) TopaMemArray[Index]));
+ }
+
+ DEBUG ((DEBUG_INFO, "ProcTrace: Allocated ToPA mem for %d thread \n", ProcTraceData->AllocatedThreads));
+ //
+ // BSP gets the first block
+ //
+ TopaTableBaseAddr = TopaMemArray[0];
+ } else {
+ //
+ // Count for currently executing AP.
+ //
+ if (ProcessorNumber < ProcTraceData->AllocatedThreads) {
+ TopaTableBaseAddr = ProcTraceData->TopaMemArray[ProcessorNumber];
+ } else {
+ return RETURN_SUCCESS;
+ }
+ }
+
+ TopaTable = (PROC_TRACE_TOPA_TABLE *) TopaTableBaseAddr;
+ TopaTable->TopaEntry[0] = (UINT64) (MemRegionBaseAddr | ((ProcTraceData->ProcTraceMemSize) << 6)) & ~BIT0;
+ TopaTable->TopaEntry[1] = (UINT64) TopaTableBaseAddr | BIT0;
+
+ //
+ // Program the MSR IA32_RTIT_OUTPUT_BASE (0x560) bits[47:12] with ToPA base
+ //
+ MsrValue = (UINT64) TopaTableBaseAddr;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_OUTPUT_BASE,
+ MsrValue
+ );
+
+ //
+ // Set the MSR IA32_RTIT_OUTPUT_MASK (0x561) bits[63:7] to 0
+ //
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_OUTPUT_MASK_PTRS,
+ 0x7F
+ );
+ //
+ // Enable ToPA output scheme by enabling MSR IA32_RTIT_CTL (0x570) ToPA (Bit 8)
+ //
+ MsrValue = AsmReadMsr64 (MSR_IA32_RTIT_CTL);
+ MsrValue |= BIT8;
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_CTL,
+ MsrValue
+ );
+ }
+
+ ///
+ /// Enable the Processor Trace feature from MSR IA32_RTIT_CTL (570h)
+ ///
+ MsrValue = AsmReadMsr64 (MSR_IA32_RTIT_CTL);
+ MsrValue |= (UINT64) BIT0 + BIT2 + BIT3 + BIT13;
+ if (!State) {
+ MsrValue &= (UINT64) ~BIT0;
+ }
+ CPU_REGISTER_TABLE_WRITE64 (
+ ProcessorNumber,
+ Msr,
+ MSR_IA32_RTIT_CTL,
+ MsrValue
+ );
+
+ return RETURN_SUCCESS;
+}
--
2.7.0.windows.1
^ permalink raw reply related [flat|nested] 6+ messages in thread