| 1 | /** @file
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| 2 | Provides cache info for each package, core type, cache level and cache type.
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| 3 |
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| 4 | Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
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| 5 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 6 |
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| 7 | **/
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| 8 |
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| 9 | #include "InternalCpuCacheInfoLib.h"
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| 10 |
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| 11 | /**
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| 12 | Print CpuCacheInfo array.
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| 13 |
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| 14 | @param[in] CpuCacheInfo Pointer to the CpuCacheInfo array.
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| 15 | @param[in] CpuCacheInfoCount The length of CpuCacheInfo array.
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| 16 |
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| 17 | **/
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| 18 | VOID
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| 19 | CpuCacheInfoPrintCpuCacheInfoTable (
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| 20 | IN CPU_CACHE_INFO *CpuCacheInfo,
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| 21 | IN UINTN CpuCacheInfoCount
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| 22 | )
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| 23 | {
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| 24 | UINTN Index;
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| 25 |
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| 26 | DEBUG ((DEBUG_INFO, "+-------+--------------------------------------------------------------------------------------+\n"));
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| 27 | DEBUG ((DEBUG_INFO, "| Index | Packge CoreType CacheLevel CacheType CacheWays (FA|DM) CacheSizeinKB CacheCount |\n"));
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| 28 | DEBUG ((DEBUG_INFO, "+-------+--------------------------------------------------------------------------------------+\n"));
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| 29 |
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| 30 | for (Index = 0; Index < CpuCacheInfoCount; Index++) {
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| 31 | DEBUG ((
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| 32 | DEBUG_INFO,
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| 33 | "| %4x | %4x %2x %2x %2x %4x ( %x| %x) %8x %4x |\n",
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| 34 | Index,
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| 35 | CpuCacheInfo[Index].Package,
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| 36 | CpuCacheInfo[Index].CoreType,
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| 37 | CpuCacheInfo[Index].CacheLevel,
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| 38 | CpuCacheInfo[Index].CacheType,
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| 39 | CpuCacheInfo[Index].CacheWays,
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| 40 | CpuCacheInfo[Index].FullyAssociativeCache,
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| 41 | CpuCacheInfo[Index].DirectMappedCache,
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| 42 | CpuCacheInfo[Index].CacheSizeinKB,
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| 43 | CpuCacheInfo[Index].CacheCount
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| 44 | ));
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| 45 | }
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| 46 |
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| 47 | DEBUG ((DEBUG_INFO, "+-------+--------------------------------------------------------------------------------------+\n"));
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| 48 | }
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| 49 |
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| 50 | /**
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| 51 | Function to compare CPU package ID, core type, cache level and cache type for use in QuickSort.
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| 52 |
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| 53 | @param[in] Buffer1 pointer to CPU_CACHE_INFO poiner to compare
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| 54 | @param[in] Buffer2 pointer to second CPU_CACHE_INFO pointer to compare
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| 55 |
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| 56 | @retval 0 Buffer1 equal to Buffer2
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| 57 | @retval 1 Buffer1 is greater than Buffer2
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| 58 | @retval -1 Buffer1 is less than Buffer2
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| 59 | **/
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| 60 | INTN
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| 61 | EFIAPI
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| 62 | CpuCacheInfoCompare (
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| 63 | IN CONST VOID *Buffer1,
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| 64 | IN CONST VOID *Buffer2
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| 65 | )
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| 66 | {
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| 67 | CPU_CACHE_INFO_COMPARATOR Comparator1, Comparator2;
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| 68 |
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| 69 | ZeroMem (&Comparator1, sizeof (Comparator1));
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| 70 | ZeroMem (&Comparator2, sizeof (Comparator2));
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| 71 |
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| 72 | Comparator1.Bits.Package = ((CPU_CACHE_INFO *)Buffer1)->Package;
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| 73 | Comparator1.Bits.CoreType = ((CPU_CACHE_INFO *)Buffer1)->CoreType;
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| 74 | Comparator1.Bits.CacheLevel = ((CPU_CACHE_INFO *)Buffer1)->CacheLevel;
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| 75 | Comparator1.Bits.CacheType = ((CPU_CACHE_INFO *)Buffer1)->CacheType;
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| 76 |
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| 77 | Comparator2.Bits.Package = ((CPU_CACHE_INFO *)Buffer2)->Package;
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| 78 | Comparator2.Bits.CoreType = ((CPU_CACHE_INFO *)Buffer2)->CoreType;
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| 79 | Comparator2.Bits.CacheLevel = ((CPU_CACHE_INFO *)Buffer2)->CacheLevel;
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| 80 | Comparator2.Bits.CacheType = ((CPU_CACHE_INFO *)Buffer2)->CacheType;
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| 81 |
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| 82 | if (Comparator1.Uint64 == Comparator2.Uint64) {
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| 83 | return 0;
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| 84 | } else if (Comparator1.Uint64 > Comparator2.Uint64) {
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| 85 | return 1;
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| 86 | } else {
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| 87 | return -1;
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| 88 | }
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| 89 | }
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| 90 |
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| 91 | /**
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| 92 | Get the total number of package and package ID in the platform.
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| 93 |
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| 94 | @param[in] ProcessorInfo Pointer to the ProcessorInfo array.
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| 95 | @param[in] NumberOfProcessors Total number of logical processors in the platform.
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| 96 | @param[in, out] Package Pointer to the Package array.
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| 97 |
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| 98 | @retval Return the total number of package and package ID in the platform.
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| 99 | **/
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| 100 | UINT32
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| 101 | CpuCacheInfoGetNumberOfPackages (
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| 102 | IN CPUID_PROCESSOR_INFO *ProcessorInfo,
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| 103 | IN UINTN NumberOfProcessors,
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| 104 | IN OUT UINT32 *Package
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| 105 | )
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| 106 | {
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| 107 | UINTN ProcessorIndex;
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| 108 | UINT32 PackageIndex;
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| 109 | UINT32 PackageCount;
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| 110 | UINT32 CurrentPackage;
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| 111 |
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| 112 | PackageCount = 0;
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| 113 |
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| 114 | for (ProcessorIndex = 0; ProcessorIndex < NumberOfProcessors; ProcessorIndex++) {
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| 115 | CurrentPackage = ProcessorInfo[ProcessorIndex].Package;
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| 116 |
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| 117 | //
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| 118 | // For the package that already exists in Package array, break out the loop.
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| 119 | //
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| 120 | for (PackageIndex = 0; PackageIndex < PackageCount; PackageIndex++) {
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| 121 | if (CurrentPackage == Package[PackageIndex]) {
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| 122 | break;
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| 123 | }
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| 124 | }
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| 125 |
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| 126 | //
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| 127 | // For the new package, save it in Package array.
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| 128 | //
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| 129 | if (PackageIndex == PackageCount) {
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| 130 | ASSERT (PackageCount < MAX_NUM_OF_PACKAGE);
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| 131 | Package[PackageCount++] = CurrentPackage;
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| 132 | }
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| 133 | }
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| 134 |
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| 135 | return PackageCount;
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| 136 | }
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| 137 |
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| 138 | /**
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| 139 | Get the number of CoreType of requested package.
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| 140 |
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| 141 | @param[in] ProcessorInfo Pointer to the ProcessorInfo array.
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| 142 | @param[in] NumberOfProcessors Total number of logical processors in the platform.
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| 143 | @param[in] Package The requested package number.
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| 144 |
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| 145 | @retval Return the number of CoreType of requested package.
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| 146 | **/
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| 147 | UINTN
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| 148 | CpuCacheInfoGetNumberOfCoreTypePerPackage (
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| 149 | IN CPUID_PROCESSOR_INFO *ProcessorInfo,
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| 150 | IN UINTN NumberOfProcessors,
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| 151 | IN UINTN Package
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| 152 | )
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| 153 | {
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| 154 | UINTN ProcessorIndex;
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| 155 | //
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| 156 | // Core Type value comes from CPUID.1Ah.EAX[31:24].
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| 157 | // So max number of core types should be MAX_UINT8.
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| 158 | //
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| 159 | UINT8 CoreType[MAX_UINT8];
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| 160 | UINTN CoreTypeIndex;
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| 161 | UINTN CoreTypeCount;
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| 162 | UINT8 CurrentCoreType;
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| 163 |
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| 164 | //
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| 165 | // CoreType array is empty.
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| 166 | //
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| 167 | CoreTypeCount = 0;
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| 168 |
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| 169 | for (ProcessorIndex = 0; ProcessorIndex < NumberOfProcessors; ProcessorIndex++) {
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| 170 | CurrentCoreType = ProcessorInfo[ProcessorIndex].CoreType;
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| 171 |
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| 172 | if (ProcessorInfo[ProcessorIndex].Package != Package) {
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| 173 | continue;
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| 174 | }
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| 175 |
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| 176 | //
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| 177 | // For the type that already exists in CoreType array, break out the loop.
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| 178 | //
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| 179 | for (CoreTypeIndex = 0; CoreTypeIndex < CoreTypeCount; CoreTypeIndex++) {
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| 180 | if (CurrentCoreType == CoreType[CoreTypeIndex]) {
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| 181 | break;
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| 182 | }
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| 183 | }
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| 184 |
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| 185 | //
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| 186 | // For the new type, save it in CoreType array.
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| 187 | //
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| 188 | if (CoreTypeIndex == CoreTypeCount) {
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| 189 | ASSERT (CoreTypeCount < MAX_UINT8);
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| 190 | CoreType[CoreTypeCount++] = CurrentCoreType;
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| 191 | }
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| 192 | }
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| 193 |
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| 194 | return CoreTypeCount;
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| 195 | }
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| 196 |
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| 197 | /**
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| 198 | Collect core and cache information of calling processor via CPUID instructions.
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| 199 |
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| 200 | @param[in, out] Buffer The pointer to private data buffer.
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| 201 | **/
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| 202 | VOID
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| 203 | EFIAPI
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| 204 | CpuCacheInfoCollectCoreAndCacheData (
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| 205 | IN OUT VOID *Buffer
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| 206 | )
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| 207 | {
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| 208 | UINTN ProcessorIndex;
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| 209 | UINT32 CpuidMaxInput;
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| 210 | UINT8 CacheParamLeafIndex;
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| 211 | CPUID_CACHE_PARAMS_EAX CacheParamEax;
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| 212 | CPUID_CACHE_PARAMS_EBX CacheParamEbx;
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| 213 | UINT32 CacheParamEcx;
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| 214 | CPUID_CACHE_PARAMS_EDX CacheParamEdx;
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| 215 | CPUID_NATIVE_MODEL_ID_AND_CORE_TYPE_EAX NativeModelIdAndCoreTypeEax;
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| 216 | COLLECT_CPUID_CACHE_DATA_CONTEXT *Context;
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| 217 | CPUID_CACHE_DATA *CacheData;
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| 218 |
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| 219 | Context = (COLLECT_CPUID_CACHE_DATA_CONTEXT *)Buffer;
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| 220 | ProcessorIndex = CpuCacheInfoWhoAmI (Context->MpServices);
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| 221 | CacheData = &Context->CacheData[MAX_NUM_OF_CACHE_PARAMS_LEAF * ProcessorIndex];
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| 222 |
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| 223 | AsmCpuid (CPUID_SIGNATURE, &CpuidMaxInput, NULL, NULL, NULL);
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| 224 |
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| 225 | //
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| 226 | // get CoreType if CPUID_HYBRID_INFORMATION leaf is supported.
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| 227 | //
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| 228 | Context->ProcessorInfo[ProcessorIndex].CoreType = 0;
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| 229 | if (CpuidMaxInput >= CPUID_HYBRID_INFORMATION) {
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| 230 | AsmCpuidEx (CPUID_HYBRID_INFORMATION, CPUID_HYBRID_INFORMATION_MAIN_LEAF, &NativeModelIdAndCoreTypeEax.Uint32, NULL, NULL, NULL);
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| 231 | Context->ProcessorInfo[ProcessorIndex].CoreType = (UINT8)NativeModelIdAndCoreTypeEax.Bits.CoreType;
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| 232 | }
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| 233 |
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| 234 | //
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| 235 | // cache hierarchy starts with an index value of 0.
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| 236 | //
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| 237 | CacheParamLeafIndex = 0;
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| 238 |
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| 239 | while (CacheParamLeafIndex < MAX_NUM_OF_CACHE_PARAMS_LEAF) {
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| 240 | AsmCpuidEx (CPUID_CACHE_PARAMS, CacheParamLeafIndex, &CacheParamEax.Uint32, &CacheParamEbx.Uint32, &CacheParamEcx, &CacheParamEdx.Uint32);
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| 241 |
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| 242 | if (CacheParamEax.Bits.CacheType == 0) {
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| 243 | break;
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| 244 | }
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| 245 |
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| 246 | CacheData[CacheParamLeafIndex].CacheLevel = (UINT8)CacheParamEax.Bits.CacheLevel;
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| 247 | CacheData[CacheParamLeafIndex].CacheType = (UINT8)CacheParamEax.Bits.CacheType;
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| 248 | CacheData[CacheParamLeafIndex].CacheWays = (UINT16)CacheParamEbx.Bits.Ways;
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| 249 | CacheData[CacheParamLeafIndex].FullyAssociativeCache = (UINT8)CacheParamEax.Bits.FullyAssociativeCache;
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| 250 | CacheData[CacheParamLeafIndex].DirectMappedCache = (UINT8)(CacheParamEdx.Bits.ComplexCacheIndexing == 0);
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| 251 | CacheData[CacheParamLeafIndex].CacheShareBits = (UINT16)CacheParamEax.Bits.MaximumAddressableIdsForLogicalProcessors;
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| 252 | CacheData[CacheParamLeafIndex].CacheSizeinKB = (CacheParamEbx.Bits.Ways + 1) *
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| 253 | (CacheParamEbx.Bits.LinePartitions + 1) * (CacheParamEbx.Bits.LineSize + 1) * (CacheParamEcx + 1) / SIZE_1KB;
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| 254 |
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| 255 | CacheParamLeafIndex++;
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| 256 | }
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| 257 | }
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| 258 |
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| 259 | /**
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| 260 | Collect CacheInfo data from the CacheData.
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| 261 |
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| 262 | @param[in] CacheData Pointer to the CacheData array.
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| 263 | @param[in] ProcessorInfo Pointer to the ProcessorInfo array.
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| 264 | @param[in] NumberOfProcessors Total number of logical processors in the platform.
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| 265 | @param[in, out] CacheInfo Pointer to the CacheInfo array.
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| 266 | @param[in, out] CacheInfoCount As input, point to the length of response CacheInfo array.
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| 267 | As output, point to the actual length of response CacheInfo array.
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| 268 |
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| 269 | @retval EFI_SUCCESS Function completed successfully.
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| 270 | @retval EFI_OUT_OF_RESOURCES Required resources could not be allocated.
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| 271 | @retval EFI_BUFFER_TOO_SMALL CacheInfoCount is too small to hold the response CacheInfo
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| 272 | array. CacheInfoCount has been updated with the length needed
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| 273 | to complete the request.
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| 274 | **/
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| 275 | EFI_STATUS
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| 276 | CpuCacheInfoCollectCpuCacheInfoData (
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| 277 | IN CPUID_CACHE_DATA *CacheData,
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| 278 | IN CPUID_PROCESSOR_INFO *ProcessorInfo,
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| 279 | IN UINTN NumberOfProcessors,
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| 280 | IN OUT CPU_CACHE_INFO *CacheInfo,
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| 281 | IN OUT UINTN *CacheInfoCount
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| 282 | )
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| 283 | {
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| 284 | EFI_STATUS Status;
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| 285 | UINT32 NumberOfPackage;
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| 286 | UINT32 Package[MAX_NUM_OF_PACKAGE];
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| 287 | UINTN PackageIndex;
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| 288 | UINTN TotalNumberOfCoreType;
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| 289 | UINTN MaxCacheInfoCount;
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| 290 | CPU_CACHE_INFO *LocalCacheInfo;
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| 291 | UINTN CacheInfoIndex;
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| 292 | UINTN LocalCacheInfoCount;
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| 293 | UINTN Index;
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| 294 | UINTN NextIndex;
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| 295 | CPU_CACHE_INFO SortBuffer;
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| 296 |
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| 297 | //
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| 298 | // Get number of Packages and Package ID.
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| 299 | //
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| 300 | NumberOfPackage = CpuCacheInfoGetNumberOfPackages (ProcessorInfo, NumberOfProcessors, Package);
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| 301 |
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| 302 | //
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| 303 | // Get number of core types for each package and count the total number.
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| 304 | // E.g. If Package1 and Package2 both have 2 core types, the total number is 4.
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| 305 | //
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| 306 | TotalNumberOfCoreType = 0;
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| 307 | for (PackageIndex = 0; PackageIndex < NumberOfPackage; PackageIndex++) {
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| 308 | TotalNumberOfCoreType += CpuCacheInfoGetNumberOfCoreTypePerPackage (ProcessorInfo, NumberOfProcessors, Package[PackageIndex]);
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| 309 | }
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| 310 |
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| 311 | MaxCacheInfoCount = TotalNumberOfCoreType * MAX_NUM_OF_CACHE_PARAMS_LEAF;
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| 312 | LocalCacheInfo = AllocatePages (EFI_SIZE_TO_PAGES (MaxCacheInfoCount * sizeof (*LocalCacheInfo)));
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| 313 | ASSERT (LocalCacheInfo != NULL);
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| 314 | if (LocalCacheInfo == NULL) {
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| 315 | return EFI_OUT_OF_RESOURCES;
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| 316 | }
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| 317 |
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| 318 | LocalCacheInfoCount = 0;
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| 319 |
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| 320 | for (Index = 0; Index < NumberOfProcessors * MAX_NUM_OF_CACHE_PARAMS_LEAF; Index++) {
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| 321 | if (CacheData[Index].CacheSizeinKB == 0) {
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| 322 | continue;
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| 323 | }
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| 324 |
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| 325 | //
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| 326 | // For the sharing caches, clear their CacheSize.
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| 327 | //
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| 328 | for (NextIndex = Index + 1; NextIndex < NumberOfProcessors * MAX_NUM_OF_CACHE_PARAMS_LEAF; NextIndex++) {
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| 329 | if (CacheData[NextIndex].CacheSizeinKB == 0) {
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| 330 | continue;
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| 331 | }
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| 332 |
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| 333 | if ((CacheData[Index].CacheLevel == CacheData[NextIndex].CacheLevel) &&
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| 334 | (CacheData[Index].CacheType == CacheData[NextIndex].CacheType) &&
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| 335 | (ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package == ProcessorInfo[NextIndex / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package) &&
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| 336 | (ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType == ProcessorInfo[NextIndex / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType) &&
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| 337 | ((ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].ApicId & ~CacheData[Index].CacheShareBits) ==
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| 338 | (ProcessorInfo[NextIndex / MAX_NUM_OF_CACHE_PARAMS_LEAF].ApicId & ~CacheData[NextIndex].CacheShareBits)))
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| 339 | {
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| 340 | CacheData[NextIndex].CacheSizeinKB = 0; // uses the sharing cache
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| 341 | }
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| 342 | }
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| 343 |
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| 344 | //
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| 345 | // For the cache that already exists in LocalCacheInfo, increase its CacheCount.
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| 346 | //
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| 347 | for (CacheInfoIndex = 0; CacheInfoIndex < LocalCacheInfoCount; CacheInfoIndex++) {
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| 348 | if ((LocalCacheInfo[CacheInfoIndex].Package == ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package) &&
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| 349 | (LocalCacheInfo[CacheInfoIndex].CoreType == ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType) &&
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| 350 | (LocalCacheInfo[CacheInfoIndex].CacheLevel == CacheData[Index].CacheLevel) &&
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| 351 | (LocalCacheInfo[CacheInfoIndex].CacheType == CacheData[Index].CacheType) &&
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| 352 | (LocalCacheInfo[CacheInfoIndex].CacheSizeinKB == CacheData[Index].CacheSizeinKB))
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| 353 | {
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| 354 | LocalCacheInfo[CacheInfoIndex].CacheCount++;
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| 355 | break;
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| 356 | }
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| 357 | }
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| 358 |
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| 359 | //
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| 360 | // For the new cache with different Package, CoreType, CacheLevel or CacheType, copy its
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| 361 | // data into LocalCacheInfo buffer.
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| 362 | //
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| 363 | if (CacheInfoIndex == LocalCacheInfoCount) {
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| 364 | ASSERT (LocalCacheInfoCount < MaxCacheInfoCount);
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| 365 |
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| 366 | LocalCacheInfo[LocalCacheInfoCount].Package = ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package;
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| 367 | LocalCacheInfo[LocalCacheInfoCount].CoreType = ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType;
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| 368 | LocalCacheInfo[LocalCacheInfoCount].CacheLevel = CacheData[Index].CacheLevel;
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| 369 | LocalCacheInfo[LocalCacheInfoCount].CacheType = CacheData[Index].CacheType;
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| 370 | LocalCacheInfo[LocalCacheInfoCount].CacheWays = CacheData[Index].CacheWays;
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| 371 | LocalCacheInfo[LocalCacheInfoCount].FullyAssociativeCache = CacheData[Index].FullyAssociativeCache;
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| 372 | LocalCacheInfo[LocalCacheInfoCount].DirectMappedCache = CacheData[Index].DirectMappedCache;
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| 373 | LocalCacheInfo[LocalCacheInfoCount].CacheSizeinKB = CacheData[Index].CacheSizeinKB;
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| 374 | LocalCacheInfo[LocalCacheInfoCount].CacheCount = 1;
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| 375 |
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| 376 | LocalCacheInfoCount++;
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| 377 | }
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| 378 | }
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| 379 |
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| 380 | if (*CacheInfoCount < LocalCacheInfoCount) {
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| 381 | Status = EFI_BUFFER_TOO_SMALL;
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| 382 | } else {
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| 383 | //
|
|---|
| 384 | // Sort LocalCacheInfo array by CPU package ID, core type, cache level and cache type.
|
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| 385 | //
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|---|
| 386 | QuickSort (LocalCacheInfo, LocalCacheInfoCount, sizeof (*LocalCacheInfo), CpuCacheInfoCompare, (VOID *)&SortBuffer);
|
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| 387 | CopyMem (CacheInfo, LocalCacheInfo, sizeof (*CacheInfo) * LocalCacheInfoCount);
|
|---|
| 388 | DEBUG_CODE (
|
|---|
| 389 | CpuCacheInfoPrintCpuCacheInfoTable (CacheInfo, LocalCacheInfoCount);
|
|---|
| 390 | );
|
|---|
| 391 | Status = EFI_SUCCESS;
|
|---|
| 392 | }
|
|---|
| 393 |
|
|---|
| 394 | *CacheInfoCount = LocalCacheInfoCount;
|
|---|
| 395 |
|
|---|
| 396 | FreePages (LocalCacheInfo, EFI_SIZE_TO_PAGES (MaxCacheInfoCount * sizeof (*LocalCacheInfo)));
|
|---|
| 397 |
|
|---|
| 398 | return Status;
|
|---|
| 399 | }
|
|---|
| 400 |
|
|---|
| 401 | /**
|
|---|
| 402 | Get CpuCacheInfo data array. The array is sorted by CPU package ID, core type, cache level and cache type.
|
|---|
| 403 |
|
|---|
| 404 | @param[in, out] CpuCacheInfo Pointer to the CpuCacheInfo array.
|
|---|
| 405 | @param[in, out] CpuCacheInfoCount As input, point to the length of response CpuCacheInfo array.
|
|---|
| 406 | As output, point to the actual length of response CpuCacheInfo array.
|
|---|
| 407 |
|
|---|
| 408 | @retval EFI_SUCCESS Function completed successfully.
|
|---|
| 409 | @retval EFI_INVALID_PARAMETER CpuCacheInfoCount is NULL.
|
|---|
| 410 | @retval EFI_INVALID_PARAMETER CpuCacheInfo is NULL while CpuCacheInfoCount contains the value
|
|---|
| 411 | greater than zero.
|
|---|
| 412 | @retval EFI_UNSUPPORTED Processor does not support CPUID_CACHE_PARAMS Leaf.
|
|---|
| 413 | @retval EFI_OUT_OF_RESOURCES Required resources could not be allocated.
|
|---|
| 414 | @retval EFI_BUFFER_TOO_SMALL CpuCacheInfoCount is too small to hold the response CpuCacheInfo
|
|---|
| 415 | array. CpuCacheInfoCount has been updated with the length needed
|
|---|
| 416 | to complete the request.
|
|---|
| 417 | **/
|
|---|
| 418 | EFI_STATUS
|
|---|
| 419 | EFIAPI
|
|---|
| 420 | GetCpuCacheInfo (
|
|---|
| 421 | IN OUT CPU_CACHE_INFO *CpuCacheInfo,
|
|---|
| 422 | IN OUT UINTN *CpuCacheInfoCount
|
|---|
| 423 | )
|
|---|
| 424 | {
|
|---|
| 425 | EFI_STATUS Status;
|
|---|
| 426 | UINT32 CpuidMaxInput;
|
|---|
| 427 | UINT32 NumberOfProcessors;
|
|---|
| 428 | UINTN CacheDataCount;
|
|---|
| 429 | UINTN ProcessorIndex;
|
|---|
| 430 | EFI_PROCESSOR_INFORMATION ProcessorInfo;
|
|---|
| 431 | COLLECT_CPUID_CACHE_DATA_CONTEXT Context;
|
|---|
| 432 |
|
|---|
| 433 | if (CpuCacheInfoCount == NULL) {
|
|---|
| 434 | return EFI_INVALID_PARAMETER;
|
|---|
| 435 | }
|
|---|
| 436 |
|
|---|
| 437 | if ((*CpuCacheInfoCount != 0) && (CpuCacheInfo == NULL)) {
|
|---|
| 438 | return EFI_INVALID_PARAMETER;
|
|---|
| 439 | }
|
|---|
| 440 |
|
|---|
| 441 | AsmCpuid (CPUID_SIGNATURE, &CpuidMaxInput, NULL, NULL, NULL);
|
|---|
| 442 | if (CpuidMaxInput < CPUID_CACHE_PARAMS) {
|
|---|
| 443 | return EFI_UNSUPPORTED;
|
|---|
| 444 | }
|
|---|
| 445 |
|
|---|
| 446 | //
|
|---|
| 447 | // Initialize COLLECT_CPUID_CACHE_DATA_CONTEXT.MpServices.
|
|---|
| 448 | //
|
|---|
| 449 | CpuCacheInfoGetMpServices (&Context.MpServices);
|
|---|
| 450 |
|
|---|
| 451 | NumberOfProcessors = CpuCacheInfoGetNumberOfProcessors (Context.MpServices);
|
|---|
| 452 |
|
|---|
| 453 | //
|
|---|
| 454 | // Initialize COLLECT_CPUID_CACHE_DATA_CONTEXT.ProcessorInfo.
|
|---|
| 455 | //
|
|---|
| 456 | Context.ProcessorInfo = AllocatePages (EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (*Context.ProcessorInfo)));
|
|---|
| 457 | ASSERT (Context.ProcessorInfo != NULL);
|
|---|
| 458 | if (Context.ProcessorInfo == NULL) {
|
|---|
| 459 | return EFI_OUT_OF_RESOURCES;
|
|---|
| 460 | }
|
|---|
| 461 |
|
|---|
| 462 | //
|
|---|
| 463 | // Initialize COLLECT_CPUID_CACHE_DATA_CONTEXT.CacheData.
|
|---|
| 464 | // CacheData array consists of CPUID_CACHE_DATA data structure for each Cpuid Cache Parameter Leaf
|
|---|
| 465 | // per logical processor. The array begin with data of each Cache Parameter Leaf of processor 0, followed
|
|---|
| 466 | // by data of each Cache Parameter Leaf of processor 1 ...
|
|---|
| 467 | //
|
|---|
| 468 | CacheDataCount = NumberOfProcessors * MAX_NUM_OF_CACHE_PARAMS_LEAF;
|
|---|
| 469 | Context.CacheData = AllocatePages (EFI_SIZE_TO_PAGES (CacheDataCount * sizeof (*Context.CacheData)));
|
|---|
| 470 | ASSERT (Context.CacheData != NULL);
|
|---|
| 471 | if (Context.CacheData == NULL) {
|
|---|
| 472 | FreePages (Context.ProcessorInfo, EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (*Context.ProcessorInfo)));
|
|---|
| 473 | return EFI_OUT_OF_RESOURCES;
|
|---|
| 474 | }
|
|---|
| 475 |
|
|---|
| 476 | ZeroMem (Context.CacheData, CacheDataCount * sizeof (*Context.CacheData));
|
|---|
| 477 |
|
|---|
| 478 | //
|
|---|
| 479 | // Collect Package ID and APIC ID of all processors.
|
|---|
| 480 | //
|
|---|
| 481 | for (ProcessorIndex = 0; ProcessorIndex < NumberOfProcessors; ProcessorIndex++) {
|
|---|
| 482 | CpuCacheInfoGetProcessorInfo (Context.MpServices, ProcessorIndex, &ProcessorInfo);
|
|---|
| 483 | Context.ProcessorInfo[ProcessorIndex].Package = ProcessorInfo.Location.Package;
|
|---|
| 484 | Context.ProcessorInfo[ProcessorIndex].ApicId = (UINT32)ProcessorInfo.ProcessorId;
|
|---|
| 485 | }
|
|---|
| 486 |
|
|---|
| 487 | //
|
|---|
| 488 | // Wakeup all processors for CacheData(core type and cache data) collection.
|
|---|
| 489 | //
|
|---|
| 490 | CpuCacheInfoStartupAllCPUs (Context.MpServices, CpuCacheInfoCollectCoreAndCacheData, &Context);
|
|---|
| 491 |
|
|---|
| 492 | //
|
|---|
| 493 | // Collect CpuCacheInfo data from CacheData.
|
|---|
| 494 | //
|
|---|
| 495 | Status = CpuCacheInfoCollectCpuCacheInfoData (Context.CacheData, Context.ProcessorInfo, NumberOfProcessors, CpuCacheInfo, CpuCacheInfoCount);
|
|---|
| 496 |
|
|---|
| 497 | FreePages (Context.CacheData, EFI_SIZE_TO_PAGES (CacheDataCount * sizeof (*Context.CacheData)));
|
|---|
| 498 | FreePages (Context.ProcessorInfo, EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (*Context.ProcessorInfo)));
|
|---|
| 499 |
|
|---|
| 500 | return Status;
|
|---|
| 501 | }
|
|---|
