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83facfd1 LY |
1 | /** @file\r |
2 | Provides cache info for each package, core type, cache level and cache type.\r | |
3 | \r | |
e4ff3773 | 4 | Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>\r |
83facfd1 LY |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "InternalCpuCacheInfoLib.h"\r | |
10 | \r | |
11 | /**\r | |
12 | Print CpuCacheInfo array.\r | |
13 | \r | |
14 | @param[in] CpuCacheInfo Pointer to the CpuCacheInfo array.\r | |
15 | @param[in] CpuCacheInfoCount The length of CpuCacheInfo array.\r | |
16 | \r | |
17 | **/\r | |
18 | VOID\r | |
19 | CpuCacheInfoPrintCpuCacheInfoTable (\r | |
20 | IN CPU_CACHE_INFO *CpuCacheInfo,\r | |
21 | IN UINTN CpuCacheInfoCount\r | |
22 | )\r | |
23 | {\r | |
24 | UINTN Index;\r | |
25 | \r | |
e4ff3773 LY |
26 | DEBUG ((DEBUG_INFO, "+-------+--------------------------------------------------------------------------------------+\n"));\r |
27 | DEBUG ((DEBUG_INFO, "| Index | Packge CoreType CacheLevel CacheType CacheWays (FA|DM) CacheSizeinKB CacheCount |\n"));\r | |
28 | DEBUG ((DEBUG_INFO, "+-------+--------------------------------------------------------------------------------------+\n"));\r | |
83facfd1 LY |
29 | \r |
30 | for (Index = 0; Index < CpuCacheInfoCount; Index++) {\r | |
e4ff3773 LY |
31 | DEBUG ((DEBUG_INFO, "| %4x | %4x %2x %2x %2x %4x ( %x| %x) %8x %4x |\n",\r |
32 | Index, CpuCacheInfo[Index].Package, CpuCacheInfo[Index].CoreType, CpuCacheInfo[Index].CacheLevel,\r | |
33 | CpuCacheInfo[Index].CacheType, CpuCacheInfo[Index].CacheWays, CpuCacheInfo[Index].FullyAssociativeCache,\r | |
34 | CpuCacheInfo[Index].DirectMappedCache, CpuCacheInfo[Index].CacheSizeinKB, CpuCacheInfo[Index].CacheCount));\r | |
83facfd1 LY |
35 | }\r |
36 | \r | |
e4ff3773 | 37 | DEBUG ((DEBUG_INFO, "+-------+--------------------------------------------------------------------------------------+\n"));\r |
83facfd1 LY |
38 | }\r |
39 | \r | |
4de77ae9 LY |
40 | /**\r |
41 | Function to compare CPU package ID, core type, cache level and cache type for use in QuickSort.\r | |
42 | \r | |
43 | @param[in] Buffer1 pointer to CPU_CACHE_INFO poiner to compare\r | |
44 | @param[in] Buffer2 pointer to second CPU_CACHE_INFO pointer to compare\r | |
45 | \r | |
46 | @retval 0 Buffer1 equal to Buffer2\r | |
47 | @retval 1 Buffer1 is greater than Buffer2\r | |
48 | @retval -1 Buffer1 is less than Buffer2\r | |
49 | **/\r | |
50 | INTN\r | |
51 | EFIAPI\r | |
52 | CpuCacheInfoCompare (\r | |
53 | IN CONST VOID *Buffer1,\r | |
54 | IN CONST VOID *Buffer2\r | |
55 | )\r | |
56 | {\r | |
57 | CPU_CACHE_INFO_COMPARATOR Comparator1, Comparator2;\r | |
58 | \r | |
59 | ZeroMem (&Comparator1, sizeof (Comparator1));\r | |
60 | ZeroMem (&Comparator2, sizeof (Comparator2));\r | |
61 | \r | |
62 | Comparator1.Bits.Package = ((CPU_CACHE_INFO*)Buffer1)->Package;\r | |
63 | Comparator1.Bits.CoreType = ((CPU_CACHE_INFO*)Buffer1)->CoreType;\r | |
64 | Comparator1.Bits.CacheLevel = ((CPU_CACHE_INFO*)Buffer1)->CacheLevel;\r | |
65 | Comparator1.Bits.CacheType = ((CPU_CACHE_INFO*)Buffer1)->CacheType;\r | |
66 | \r | |
67 | Comparator2.Bits.Package = ((CPU_CACHE_INFO*)Buffer2)->Package;\r | |
68 | Comparator2.Bits.CoreType = ((CPU_CACHE_INFO*)Buffer2)->CoreType;\r | |
69 | Comparator2.Bits.CacheLevel = ((CPU_CACHE_INFO*)Buffer2)->CacheLevel;\r | |
70 | Comparator2.Bits.CacheType = ((CPU_CACHE_INFO*)Buffer2)->CacheType;\r | |
71 | \r | |
72 | if (Comparator1.Uint64 == Comparator2.Uint64) {\r | |
73 | return 0;\r | |
74 | } else if (Comparator1.Uint64 > Comparator2.Uint64) {\r | |
75 | return 1;\r | |
76 | } else {\r | |
77 | return -1;\r | |
78 | }\r | |
79 | }\r | |
80 | \r | |
83facfd1 LY |
81 | /**\r |
82 | Get the total number of package and package ID in the platform.\r | |
83 | \r | |
84 | @param[in] ProcessorInfo Pointer to the ProcessorInfo array.\r | |
85 | @param[in] NumberOfProcessors Total number of logical processors in the platform.\r | |
86 | @param[in, out] Package Pointer to the Package array.\r | |
87 | \r | |
88 | @retval Return the total number of package and package ID in the platform.\r | |
89 | **/\r | |
90 | UINT32\r | |
91 | CpuCacheInfoGetNumberOfPackages (\r | |
92 | IN CPUID_PROCESSOR_INFO *ProcessorInfo,\r | |
93 | IN UINTN NumberOfProcessors,\r | |
94 | IN OUT UINT32 *Package\r | |
95 | )\r | |
96 | {\r | |
97 | UINTN ProcessorIndex;\r | |
98 | UINT32 PackageIndex;\r | |
99 | UINT32 PackageCount;\r | |
100 | UINT32 CurrentPackage;\r | |
101 | \r | |
102 | PackageCount = 0;\r | |
103 | \r | |
104 | for (ProcessorIndex = 0; ProcessorIndex < NumberOfProcessors; ProcessorIndex++) {\r | |
105 | CurrentPackage = ProcessorInfo[ProcessorIndex].Package;\r | |
106 | \r | |
107 | //\r | |
108 | // For the package that already exists in Package array, break out the loop.\r | |
109 | //\r | |
110 | for (PackageIndex = 0; PackageIndex < PackageCount; PackageIndex++) {\r | |
111 | if (CurrentPackage == Package[PackageIndex]) {\r | |
112 | break;\r | |
113 | }\r | |
114 | }\r | |
115 | \r | |
116 | //\r | |
117 | // For the new package, save it in Package array.\r | |
118 | //\r | |
119 | if (PackageIndex == PackageCount) {\r | |
120 | ASSERT (PackageCount < MAX_NUM_OF_PACKAGE);\r | |
121 | Package[PackageCount++] = CurrentPackage;\r | |
122 | }\r | |
123 | }\r | |
124 | \r | |
125 | return PackageCount;\r | |
126 | }\r | |
127 | \r | |
128 | /**\r | |
129 | Get the number of CoreType of requested package.\r | |
130 | \r | |
131 | @param[in] ProcessorInfo Pointer to the ProcessorInfo array.\r | |
132 | @param[in] NumberOfProcessors Total number of logical processors in the platform.\r | |
133 | @param[in] Package The requested package number.\r | |
134 | \r | |
135 | @retval Return the number of CoreType of requested package.\r | |
136 | **/\r | |
137 | UINTN\r | |
138 | CpuCacheInfoGetNumberOfCoreTypePerPackage(\r | |
139 | IN CPUID_PROCESSOR_INFO *ProcessorInfo,\r | |
140 | IN UINTN NumberOfProcessors,\r | |
141 | IN UINTN Package\r | |
142 | )\r | |
143 | {\r | |
144 | UINTN ProcessorIndex;\r | |
145 | //\r | |
146 | // Core Type value comes from CPUID.1Ah.EAX[31:24].\r | |
147 | // So max number of core types should be MAX_UINT8.\r | |
148 | //\r | |
149 | UINT8 CoreType[MAX_UINT8];\r | |
150 | UINTN CoreTypeIndex;\r | |
151 | UINTN CoreTypeCount;\r | |
152 | UINT8 CurrentCoreType;\r | |
153 | \r | |
154 | //\r | |
155 | // CoreType array is empty.\r | |
156 | //\r | |
157 | CoreTypeCount = 0;\r | |
158 | \r | |
159 | for (ProcessorIndex = 0; ProcessorIndex < NumberOfProcessors; ProcessorIndex++) {\r | |
160 | CurrentCoreType = ProcessorInfo[ProcessorIndex].CoreType;\r | |
161 | \r | |
162 | if (ProcessorInfo[ProcessorIndex].Package != Package) {\r | |
163 | continue;\r | |
164 | }\r | |
165 | \r | |
166 | //\r | |
167 | // For the type that already exists in CoreType array, break out the loop.\r | |
168 | //\r | |
169 | for (CoreTypeIndex = 0; CoreTypeIndex < CoreTypeCount; CoreTypeIndex++) {\r | |
170 | if (CurrentCoreType == CoreType[CoreTypeIndex]) {\r | |
171 | break;\r | |
172 | }\r | |
173 | }\r | |
174 | \r | |
175 | //\r | |
176 | // For the new type, save it in CoreType array.\r | |
177 | //\r | |
178 | if (CoreTypeIndex == CoreTypeCount) {\r | |
179 | ASSERT (CoreTypeCount < MAX_UINT8);\r | |
180 | CoreType[CoreTypeCount++] = CurrentCoreType;\r | |
181 | }\r | |
182 | }\r | |
183 | \r | |
184 | return CoreTypeCount;\r | |
185 | }\r | |
186 | \r | |
187 | /**\r | |
188 | Collect core and cache information of calling processor via CPUID instructions.\r | |
189 | \r | |
190 | @param[in, out] Buffer The pointer to private data buffer.\r | |
191 | **/\r | |
192 | VOID\r | |
193 | EFIAPI\r | |
194 | CpuCacheInfoCollectCoreAndCacheData (\r | |
195 | IN OUT VOID *Buffer\r | |
196 | )\r | |
197 | {\r | |
198 | UINTN ProcessorIndex;\r | |
199 | UINT32 CpuidMaxInput;\r | |
200 | UINT8 CacheParamLeafIndex;\r | |
201 | CPUID_CACHE_PARAMS_EAX CacheParamEax;\r | |
202 | CPUID_CACHE_PARAMS_EBX CacheParamEbx;\r | |
203 | UINT32 CacheParamEcx;\r | |
e4ff3773 | 204 | CPUID_CACHE_PARAMS_EDX CacheParamEdx;\r |
83facfd1 LY |
205 | CPUID_NATIVE_MODEL_ID_AND_CORE_TYPE_EAX NativeModelIdAndCoreTypeEax;\r |
206 | COLLECT_CPUID_CACHE_DATA_CONTEXT *Context;\r | |
207 | CPUID_CACHE_DATA *CacheData;\r | |
208 | \r | |
209 | Context = (COLLECT_CPUID_CACHE_DATA_CONTEXT *)Buffer;\r | |
210 | ProcessorIndex = CpuCacheInfoWhoAmI (Context->MpServices);\r | |
211 | CacheData = &Context->CacheData[MAX_NUM_OF_CACHE_PARAMS_LEAF * ProcessorIndex];\r | |
212 | \r | |
213 | AsmCpuid (CPUID_SIGNATURE, &CpuidMaxInput, NULL, NULL, NULL);\r | |
214 | \r | |
215 | //\r | |
216 | // get CoreType if CPUID_HYBRID_INFORMATION leaf is supported.\r | |
217 | //\r | |
218 | Context->ProcessorInfo[ProcessorIndex].CoreType = 0;\r | |
219 | if (CpuidMaxInput >= CPUID_HYBRID_INFORMATION) {\r | |
2d6fc9d3 | 220 | AsmCpuidEx (CPUID_HYBRID_INFORMATION, CPUID_HYBRID_INFORMATION_MAIN_LEAF, &NativeModelIdAndCoreTypeEax.Uint32, NULL, NULL, NULL);\r |
83facfd1 LY |
221 | Context->ProcessorInfo[ProcessorIndex].CoreType = (UINT8) NativeModelIdAndCoreTypeEax.Bits.CoreType;\r |
222 | }\r | |
223 | \r | |
224 | //\r | |
225 | // cache hierarchy starts with an index value of 0.\r | |
226 | //\r | |
227 | CacheParamLeafIndex = 0;\r | |
228 | \r | |
229 | while (CacheParamLeafIndex < MAX_NUM_OF_CACHE_PARAMS_LEAF) {\r | |
e4ff3773 | 230 | AsmCpuidEx (CPUID_CACHE_PARAMS, CacheParamLeafIndex, &CacheParamEax.Uint32, &CacheParamEbx.Uint32, &CacheParamEcx, &CacheParamEdx.Uint32);\r |
83facfd1 LY |
231 | \r |
232 | if (CacheParamEax.Bits.CacheType == 0) {\r | |
233 | break;\r | |
234 | }\r | |
235 | \r | |
e4ff3773 LY |
236 | CacheData[CacheParamLeafIndex].CacheLevel = (UINT8)CacheParamEax.Bits.CacheLevel;\r |
237 | CacheData[CacheParamLeafIndex].CacheType = (UINT8)CacheParamEax.Bits.CacheType;\r | |
238 | CacheData[CacheParamLeafIndex].CacheWays = (UINT16)CacheParamEbx.Bits.Ways;\r | |
239 | CacheData[CacheParamLeafIndex].FullyAssociativeCache = (UINT8)CacheParamEax.Bits.FullyAssociativeCache;\r | |
8dd4fc5b | 240 | CacheData[CacheParamLeafIndex].DirectMappedCache = (UINT8)(CacheParamEdx.Bits.ComplexCacheIndexing == 0);\r |
e4ff3773 LY |
241 | CacheData[CacheParamLeafIndex].CacheShareBits = (UINT16)CacheParamEax.Bits.MaximumAddressableIdsForLogicalProcessors;\r |
242 | CacheData[CacheParamLeafIndex].CacheSizeinKB = (CacheParamEbx.Bits.Ways + 1) *\r | |
83facfd1 LY |
243 | (CacheParamEbx.Bits.LinePartitions + 1) * (CacheParamEbx.Bits.LineSize + 1) * (CacheParamEcx + 1) / SIZE_1KB;\r |
244 | \r | |
245 | CacheParamLeafIndex++;\r | |
246 | }\r | |
247 | }\r | |
248 | \r | |
249 | /**\r | |
250 | Collect CacheInfo data from the CacheData.\r | |
251 | \r | |
252 | @param[in] CacheData Pointer to the CacheData array.\r | |
253 | @param[in] ProcessorInfo Pointer to the ProcessorInfo array.\r | |
254 | @param[in] NumberOfProcessors Total number of logical processors in the platform.\r | |
255 | @param[in, out] CacheInfo Pointer to the CacheInfo array.\r | |
256 | @param[in, out] CacheInfoCount As input, point to the length of response CacheInfo array.\r | |
257 | As output, point to the actual length of response CacheInfo array.\r | |
258 | \r | |
259 | @retval EFI_SUCCESS Function completed successfully.\r | |
260 | @retval EFI_OUT_OF_RESOURCES Required resources could not be allocated.\r | |
261 | @retval EFI_BUFFER_TOO_SMALL CacheInfoCount is too small to hold the response CacheInfo\r | |
262 | array. CacheInfoCount has been updated with the length needed\r | |
263 | to complete the request.\r | |
264 | **/\r | |
265 | EFI_STATUS\r | |
266 | CpuCacheInfoCollectCpuCacheInfoData (\r | |
267 | IN CPUID_CACHE_DATA *CacheData,\r | |
268 | IN CPUID_PROCESSOR_INFO *ProcessorInfo,\r | |
269 | IN UINTN NumberOfProcessors,\r | |
270 | IN OUT CPU_CACHE_INFO *CacheInfo,\r | |
271 | IN OUT UINTN *CacheInfoCount\r | |
272 | )\r | |
273 | {\r | |
274 | EFI_STATUS Status;\r | |
275 | UINT32 NumberOfPackage;\r | |
276 | UINT32 Package[MAX_NUM_OF_PACKAGE];\r | |
277 | UINTN PackageIndex;\r | |
278 | UINTN TotalNumberOfCoreType;\r | |
279 | UINTN MaxCacheInfoCount;\r | |
280 | CPU_CACHE_INFO *LocalCacheInfo;\r | |
281 | UINTN CacheInfoIndex;\r | |
282 | UINTN LocalCacheInfoCount;\r | |
283 | UINTN Index;\r | |
284 | UINTN NextIndex;\r | |
305fd6be | 285 | CPU_CACHE_INFO SortBuffer;\r |
83facfd1 LY |
286 | \r |
287 | //\r | |
288 | // Get number of Packages and Package ID.\r | |
289 | //\r | |
290 | NumberOfPackage = CpuCacheInfoGetNumberOfPackages (ProcessorInfo, NumberOfProcessors, Package);\r | |
291 | \r | |
292 | //\r | |
293 | // Get number of core types for each package and count the total number.\r | |
294 | // E.g. If Package1 and Package2 both have 2 core types, the total number is 4.\r | |
295 | //\r | |
296 | TotalNumberOfCoreType = 0;\r | |
297 | for (PackageIndex = 0; PackageIndex < NumberOfPackage; PackageIndex++) {\r | |
298 | TotalNumberOfCoreType += CpuCacheInfoGetNumberOfCoreTypePerPackage (ProcessorInfo, NumberOfProcessors, Package[PackageIndex]);\r | |
299 | }\r | |
300 | \r | |
301 | MaxCacheInfoCount = TotalNumberOfCoreType * MAX_NUM_OF_CACHE_PARAMS_LEAF;\r | |
302 | LocalCacheInfo = AllocatePages (EFI_SIZE_TO_PAGES (MaxCacheInfoCount * sizeof (*LocalCacheInfo)));\r | |
303 | ASSERT (LocalCacheInfo != NULL);\r | |
304 | if (LocalCacheInfo == NULL) {\r | |
305 | return EFI_OUT_OF_RESOURCES;\r | |
306 | }\r | |
307 | \r | |
308 | LocalCacheInfoCount = 0;\r | |
309 | \r | |
310 | for (Index = 0; Index < NumberOfProcessors * MAX_NUM_OF_CACHE_PARAMS_LEAF; Index++) {\r | |
311 | if (CacheData[Index].CacheSizeinKB == 0) {\r | |
312 | continue;\r | |
313 | }\r | |
314 | \r | |
315 | //\r | |
316 | // For the sharing caches, clear their CacheSize.\r | |
317 | //\r | |
318 | for (NextIndex = Index + 1; NextIndex < NumberOfProcessors * MAX_NUM_OF_CACHE_PARAMS_LEAF; NextIndex++) {\r | |
319 | if (CacheData[NextIndex].CacheSizeinKB == 0) {\r | |
320 | continue;\r | |
321 | }\r | |
322 | \r | |
323 | if (CacheData[Index].CacheLevel == CacheData[NextIndex].CacheLevel &&\r | |
324 | CacheData[Index].CacheType == CacheData[NextIndex].CacheType &&\r | |
325 | ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package == ProcessorInfo[NextIndex / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package &&\r | |
326 | ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType == ProcessorInfo[NextIndex / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType &&\r | |
327 | (ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].ApicId & ~CacheData[Index].CacheShareBits) ==\r | |
328 | (ProcessorInfo[NextIndex / MAX_NUM_OF_CACHE_PARAMS_LEAF].ApicId & ~CacheData[NextIndex].CacheShareBits)) {\r | |
329 | CacheData[NextIndex].CacheSizeinKB = 0; // uses the sharing cache\r | |
330 | }\r | |
331 | }\r | |
332 | \r | |
333 | //\r | |
334 | // For the cache that already exists in LocalCacheInfo, increase its CacheCount.\r | |
335 | //\r | |
336 | for (CacheInfoIndex = 0; CacheInfoIndex < LocalCacheInfoCount; CacheInfoIndex++) {\r | |
337 | if (LocalCacheInfo[CacheInfoIndex].Package == ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package &&\r | |
338 | LocalCacheInfo[CacheInfoIndex].CoreType == ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType &&\r | |
339 | LocalCacheInfo[CacheInfoIndex].CacheLevel == CacheData[Index].CacheLevel &&\r | |
340 | LocalCacheInfo[CacheInfoIndex].CacheType == CacheData[Index].CacheType) {\r | |
341 | LocalCacheInfo[CacheInfoIndex].CacheCount++;\r | |
342 | break;\r | |
343 | }\r | |
344 | }\r | |
345 | \r | |
346 | //\r | |
347 | // For the new cache with different Package, CoreType, CacheLevel or CacheType, copy its\r | |
348 | // data into LocalCacheInfo buffer.\r | |
349 | //\r | |
350 | if (CacheInfoIndex == LocalCacheInfoCount) {\r | |
351 | ASSERT (LocalCacheInfoCount < MaxCacheInfoCount);\r | |
352 | \r | |
e4ff3773 LY |
353 | LocalCacheInfo[LocalCacheInfoCount].Package = ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].Package;\r |
354 | LocalCacheInfo[LocalCacheInfoCount].CoreType = ProcessorInfo[Index / MAX_NUM_OF_CACHE_PARAMS_LEAF].CoreType;\r | |
355 | LocalCacheInfo[LocalCacheInfoCount].CacheLevel = CacheData[Index].CacheLevel;\r | |
356 | LocalCacheInfo[LocalCacheInfoCount].CacheType = CacheData[Index].CacheType;\r | |
357 | LocalCacheInfo[LocalCacheInfoCount].CacheWays = CacheData[Index].CacheWays;\r | |
358 | LocalCacheInfo[LocalCacheInfoCount].FullyAssociativeCache = CacheData[Index].FullyAssociativeCache;\r | |
359 | LocalCacheInfo[LocalCacheInfoCount].DirectMappedCache = CacheData[Index].DirectMappedCache;\r | |
360 | LocalCacheInfo[LocalCacheInfoCount].CacheSizeinKB = CacheData[Index].CacheSizeinKB;\r | |
361 | LocalCacheInfo[LocalCacheInfoCount].CacheCount = 1;\r | |
83facfd1 LY |
362 | \r |
363 | LocalCacheInfoCount++;\r | |
364 | }\r | |
365 | }\r | |
366 | \r | |
367 | if (*CacheInfoCount < LocalCacheInfoCount) {\r | |
368 | Status = EFI_BUFFER_TOO_SMALL;\r | |
369 | } else {\r | |
4de77ae9 LY |
370 | //\r |
371 | // Sort LocalCacheInfo array by CPU package ID, core type, cache level and cache type.\r | |
372 | //\r | |
305fd6be | 373 | QuickSort (LocalCacheInfo, LocalCacheInfoCount, sizeof (*LocalCacheInfo), CpuCacheInfoCompare, (VOID*) &SortBuffer);\r |
83facfd1 LY |
374 | CopyMem (CacheInfo, LocalCacheInfo, sizeof (*CacheInfo) * LocalCacheInfoCount);\r |
375 | DEBUG_CODE (\r | |
376 | CpuCacheInfoPrintCpuCacheInfoTable (CacheInfo, LocalCacheInfoCount);\r | |
377 | );\r | |
378 | Status = EFI_SUCCESS;\r | |
379 | }\r | |
380 | \r | |
381 | *CacheInfoCount = LocalCacheInfoCount;\r | |
382 | \r | |
383 | FreePages (LocalCacheInfo, EFI_SIZE_TO_PAGES (MaxCacheInfoCount * sizeof (*LocalCacheInfo)));\r | |
384 | \r | |
385 | return Status;\r | |
386 | }\r | |
387 | \r | |
388 | /**\r | |
4de77ae9 | 389 | Get CpuCacheInfo data array. The array is sorted by CPU package ID, core type, cache level and cache type.\r |
83facfd1 LY |
390 | \r |
391 | @param[in, out] CpuCacheInfo Pointer to the CpuCacheInfo array.\r | |
392 | @param[in, out] CpuCacheInfoCount As input, point to the length of response CpuCacheInfo array.\r | |
393 | As output, point to the actual length of response CpuCacheInfo array.\r | |
394 | \r | |
395 | @retval EFI_SUCCESS Function completed successfully.\r | |
396 | @retval EFI_INVALID_PARAMETER CpuCacheInfoCount is NULL.\r | |
397 | @retval EFI_INVALID_PARAMETER CpuCacheInfo is NULL while CpuCacheInfoCount contains the value\r | |
398 | greater than zero.\r | |
399 | @retval EFI_UNSUPPORTED Processor does not support CPUID_CACHE_PARAMS Leaf.\r | |
83facfd1 LY |
400 | @retval EFI_OUT_OF_RESOURCES Required resources could not be allocated.\r |
401 | @retval EFI_BUFFER_TOO_SMALL CpuCacheInfoCount is too small to hold the response CpuCacheInfo\r | |
402 | array. CpuCacheInfoCount has been updated with the length needed\r | |
403 | to complete the request.\r | |
404 | **/\r | |
405 | EFI_STATUS\r | |
406 | EFIAPI\r | |
407 | GetCpuCacheInfo (\r | |
408 | IN OUT CPU_CACHE_INFO *CpuCacheInfo,\r | |
409 | IN OUT UINTN *CpuCacheInfoCount\r | |
410 | )\r | |
411 | {\r | |
412 | EFI_STATUS Status;\r | |
413 | UINT32 CpuidMaxInput;\r | |
414 | UINT32 NumberOfProcessors;\r | |
415 | UINTN CacheDataCount;\r | |
416 | UINTN ProcessorIndex;\r | |
417 | EFI_PROCESSOR_INFORMATION ProcessorInfo;\r | |
418 | COLLECT_CPUID_CACHE_DATA_CONTEXT Context;\r | |
419 | \r | |
420 | if (CpuCacheInfoCount == NULL) {\r | |
421 | return EFI_INVALID_PARAMETER;\r | |
422 | }\r | |
423 | \r | |
424 | if (*CpuCacheInfoCount != 0 && CpuCacheInfo == NULL) {\r | |
425 | return EFI_INVALID_PARAMETER;\r | |
426 | }\r | |
427 | \r | |
428 | AsmCpuid (CPUID_SIGNATURE, &CpuidMaxInput, NULL, NULL, NULL);\r | |
429 | if (CpuidMaxInput < CPUID_CACHE_PARAMS) {\r | |
430 | return EFI_UNSUPPORTED;\r | |
431 | }\r | |
432 | \r | |
433 | //\r | |
434 | // Initialize COLLECT_CPUID_CACHE_DATA_CONTEXT.MpServices.\r | |
435 | //\r | |
51b96e4b | 436 | CpuCacheInfoGetMpServices (&Context.MpServices);\r |
83facfd1 LY |
437 | \r |
438 | NumberOfProcessors = CpuCacheInfoGetNumberOfProcessors (Context.MpServices);\r | |
439 | \r | |
440 | //\r | |
441 | // Initialize COLLECT_CPUID_CACHE_DATA_CONTEXT.ProcessorInfo.\r | |
442 | //\r | |
443 | Context.ProcessorInfo = AllocatePages (EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (*Context.ProcessorInfo)));\r | |
444 | ASSERT (Context.ProcessorInfo != NULL);\r | |
445 | if (Context.ProcessorInfo == NULL) {\r | |
446 | return EFI_OUT_OF_RESOURCES;\r | |
447 | }\r | |
448 | //\r | |
449 | // Initialize COLLECT_CPUID_CACHE_DATA_CONTEXT.CacheData.\r | |
450 | // CacheData array consists of CPUID_CACHE_DATA data structure for each Cpuid Cache Parameter Leaf\r | |
451 | // per logical processor. The array begin with data of each Cache Parameter Leaf of processor 0, followed\r | |
452 | // by data of each Cache Parameter Leaf of processor 1 ...\r | |
453 | //\r | |
454 | CacheDataCount = NumberOfProcessors * MAX_NUM_OF_CACHE_PARAMS_LEAF;\r | |
455 | Context.CacheData = AllocatePages (EFI_SIZE_TO_PAGES (CacheDataCount * sizeof (*Context.CacheData)));\r | |
456 | ASSERT (Context.CacheData != NULL);\r | |
457 | if (Context.CacheData == NULL) {\r | |
458 | FreePages (Context.ProcessorInfo, EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (*Context.ProcessorInfo)));\r | |
459 | return EFI_OUT_OF_RESOURCES;\r | |
460 | }\r | |
461 | \r | |
462 | ZeroMem (Context.CacheData, CacheDataCount * sizeof (*Context.CacheData));\r | |
463 | \r | |
464 | //\r | |
465 | // Collect Package ID and APIC ID of all processors.\r | |
466 | //\r | |
467 | for (ProcessorIndex = 0; ProcessorIndex < NumberOfProcessors; ProcessorIndex++) {\r | |
468 | CpuCacheInfoGetProcessorInfo (Context.MpServices, ProcessorIndex, &ProcessorInfo);\r | |
469 | Context.ProcessorInfo[ProcessorIndex].Package = ProcessorInfo.Location.Package;\r | |
470 | Context.ProcessorInfo[ProcessorIndex].ApicId = (UINT32) ProcessorInfo.ProcessorId;\r | |
471 | }\r | |
472 | \r | |
473 | //\r | |
474 | // Wakeup all processors for CacheData(core type and cache data) collection.\r | |
475 | //\r | |
476 | CpuCacheInfoStartupAllCPUs (Context.MpServices, CpuCacheInfoCollectCoreAndCacheData, &Context);\r | |
477 | \r | |
478 | //\r | |
479 | // Collect CpuCacheInfo data from CacheData.\r | |
480 | //\r | |
481 | Status = CpuCacheInfoCollectCpuCacheInfoData (Context.CacheData, Context.ProcessorInfo, NumberOfProcessors, CpuCacheInfo, CpuCacheInfoCount);\r | |
482 | \r | |
483 | FreePages (Context.CacheData, EFI_SIZE_TO_PAGES (CacheDataCount * sizeof (*Context.CacheData)));\r | |
484 | FreePages (Context.ProcessorInfo, EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (*Context.ProcessorInfo)));\r | |
485 | \r | |
486 | return Status;\r | |
487 | }\r |