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23c98c94 | 1 | /** @file\r |
504214c4 LG |
2 | UEFI Memory pool management functions.\r |
3 | \r | |
09159a29 | 4 | Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r |
cd5ebaa0 | 5 | This program and the accompanying materials\r |
23c98c94 | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
28a00297 | 12 | \r |
504214c4 | 13 | **/\r |
28a00297 | 14 | \r |
9c4ac31c | 15 | #include "DxeMain.h"\r |
ec90508b | 16 | #include "Imem.h"\r |
28a00297 | 17 | \r |
f3f2e05d | 18 | #define POOL_FREE_SIGNATURE SIGNATURE_32('p','f','r','0')\r |
28a00297 | 19 | typedef struct {\r |
20 | UINT32 Signature;\r | |
21 | UINT32 Index;\r | |
22 | LIST_ENTRY Link;\r | |
23 | } POOL_FREE;\r | |
24 | \r | |
25 | \r | |
f3f2e05d | 26 | #define POOL_HEAD_SIGNATURE SIGNATURE_32('p','h','d','0')\r |
28a00297 | 27 | typedef struct {\r |
28 | UINT32 Signature;\r | |
bb683bf4 | 29 | UINT32 Reserved;\r |
28a00297 | 30 | EFI_MEMORY_TYPE Type;\r |
bb683bf4 | 31 | UINTN Size;\r |
28a00297 | 32 | CHAR8 Data[1];\r |
33 | } POOL_HEAD;\r | |
34 | \r | |
f3f2e05d | 35 | #define SIZE_OF_POOL_HEAD OFFSET_OF(POOL_HEAD,Data)\r |
28a00297 | 36 | \r |
f3f2e05d | 37 | #define POOL_TAIL_SIGNATURE SIGNATURE_32('p','t','a','l')\r |
28a00297 | 38 | typedef struct {\r |
39 | UINT32 Signature;\r | |
bb683bf4 SZ |
40 | UINT32 Reserved;\r |
41 | UINTN Size;\r | |
28a00297 | 42 | } POOL_TAIL;\r |
43 | \r | |
28a00297 | 44 | #define POOL_OVERHEAD (SIZE_OF_POOL_HEAD + sizeof(POOL_TAIL))\r |
45 | \r | |
46 | #define HEAD_TO_TAIL(a) \\r | |
47 | ((POOL_TAIL *) (((CHAR8 *) (a)) + (a)->Size - sizeof(POOL_TAIL)));\r | |
48 | \r | |
f2c7daf6 AB |
49 | //\r |
50 | // Each element is the sum of the 2 previous ones: this allows us to migrate\r | |
51 | // blocks between bins by splitting them up, while not wasting too much memory\r | |
52 | // as we would in a strict power-of-2 sequence\r | |
53 | //\r | |
54 | STATIC CONST UINT16 mPoolSizeTable[] = {\r | |
55 | 64, 128, 192, 320, 512, 832, 1344, 2176, 3520, 5696, 9216, 14912, 24128\r | |
56 | };\r | |
28a00297 | 57 | \r |
f2c7daf6 AB |
58 | #define SIZE_TO_LIST(a) (GetPoolIndexFromSize (a))\r |
59 | #define LIST_TO_SIZE(a) (mPoolSizeTable [a])\r | |
28a00297 | 60 | \r |
f2c7daf6 | 61 | #define MAX_POOL_LIST (sizeof (mPoolSizeTable) / sizeof (mPoolSizeTable[0]))\r |
28a00297 | 62 | \r |
63 | #define MAX_POOL_SIZE (MAX_ADDRESS - POOL_OVERHEAD)\r | |
64 | \r | |
65 | //\r | |
66 | // Globals\r | |
67 | //\r | |
68 | \r | |
f3f2e05d | 69 | #define POOL_SIGNATURE SIGNATURE_32('p','l','s','t')\r |
28a00297 | 70 | typedef struct {\r |
71 | INTN Signature;\r | |
72 | UINTN Used;\r | |
73 | EFI_MEMORY_TYPE MemoryType;\r | |
74 | LIST_ENTRY FreeList[MAX_POOL_LIST];\r | |
75 | LIST_ENTRY Link;\r | |
022c6d45 | 76 | } POOL;\r |
28a00297 | 77 | \r |
28a00297 | 78 | //\r |
e94a9ff7 | 79 | // Pool header for each memory type.\r |
80 | //\r | |
81 | POOL mPoolHead[EfiMaxMemoryType];\r | |
82 | \r | |
28a00297 | 83 | //\r |
e94a9ff7 | 84 | // List of pool header to search for the appropriate memory type.\r |
28a00297 | 85 | //\r |
57b4ecb9 | 86 | LIST_ENTRY mPoolHeadList = INITIALIZE_LIST_HEAD_VARIABLE (mPoolHeadList);\r |
28a00297 | 87 | \r |
dd51e45b SQ |
88 | /**\r |
89 | Get pool size table index from the specified size.\r | |
90 | \r | |
91 | @param Size The specified size to get index from pool table.\r | |
92 | \r | |
93 | @return The index of pool size table.\r | |
94 | \r | |
95 | **/\r | |
f2c7daf6 AB |
96 | STATIC\r |
97 | UINTN\r | |
98 | GetPoolIndexFromSize (\r | |
99 | UINTN Size\r | |
100 | )\r | |
101 | {\r | |
102 | UINTN Index;\r | |
103 | \r | |
104 | for (Index = 0; Index < MAX_POOL_LIST; Index++) {\r | |
105 | if (mPoolSizeTable [Index] >= Size) {\r | |
106 | return Index;\r | |
107 | }\r | |
108 | }\r | |
109 | return MAX_POOL_LIST;\r | |
110 | }\r | |
162ed594 | 111 | \r |
112 | /**\r | |
113 | Called to initialize the pool.\r | |
114 | \r | |
115 | **/\r | |
28a00297 | 116 | VOID\r |
117 | CoreInitializePool (\r | |
118 | VOID\r | |
119 | )\r | |
28a00297 | 120 | {\r |
121 | UINTN Type;\r | |
122 | UINTN Index;\r | |
123 | \r | |
124 | for (Type=0; Type < EfiMaxMemoryType; Type++) {\r | |
e94a9ff7 | 125 | mPoolHead[Type].Signature = 0;\r |
126 | mPoolHead[Type].Used = 0;\r | |
127 | mPoolHead[Type].MemoryType = (EFI_MEMORY_TYPE) Type;\r | |
28a00297 | 128 | for (Index=0; Index < MAX_POOL_LIST; Index++) {\r |
bb683bf4 | 129 | InitializeListHead (&mPoolHead[Type].FreeList[Index]);\r |
28a00297 | 130 | }\r |
131 | }\r | |
28a00297 | 132 | }\r |
133 | \r | |
28a00297 | 134 | \r |
162ed594 | 135 | /**\r |
28a00297 | 136 | Look up pool head for specified memory type.\r |
137 | \r | |
022c6d45 | 138 | @param MemoryType Memory type of which pool head is looked for\r |
28a00297 | 139 | \r |
162ed594 | 140 | @return Pointer of Corresponding pool head.\r |
28a00297 | 141 | \r |
162ed594 | 142 | **/\r |
162ed594 | 143 | POOL *\r |
144 | LookupPoolHead (\r | |
145 | IN EFI_MEMORY_TYPE MemoryType\r | |
146 | )\r | |
28a00297 | 147 | {\r |
148 | LIST_ENTRY *Link;\r | |
149 | POOL *Pool;\r | |
150 | UINTN Index;\r | |
151 | \r | |
3d78c020 | 152 | if ((UINT32)MemoryType < EfiMaxMemoryType) {\r |
e94a9ff7 | 153 | return &mPoolHead[MemoryType];\r |
28a00297 | 154 | }\r |
155 | \r | |
dc8d93ca | 156 | //\r |
8ee25f48 SZ |
157 | // MemoryType values in the range 0x80000000..0xFFFFFFFF are reserved for use by UEFI\r |
158 | // OS loaders that are provided by operating system vendors.\r | |
159 | // MemoryType values in the range 0x70000000..0x7FFFFFFF are reserved for OEM use.\r | |
dc8d93ca | 160 | //\r |
8ee25f48 | 161 | if ((UINT32) MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) {\r |
28a00297 | 162 | \r |
e94a9ff7 | 163 | for (Link = mPoolHeadList.ForwardLink; Link != &mPoolHeadList; Link = Link->ForwardLink) {\r |
28a00297 | 164 | Pool = CR(Link, POOL, Link, POOL_SIGNATURE);\r |
165 | if (Pool->MemoryType == MemoryType) {\r | |
166 | return Pool;\r | |
167 | }\r | |
168 | }\r | |
169 | \r | |
170 | Pool = CoreAllocatePoolI (EfiBootServicesData, sizeof (POOL));\r | |
171 | if (Pool == NULL) {\r | |
172 | return NULL;\r | |
173 | }\r | |
174 | \r | |
175 | Pool->Signature = POOL_SIGNATURE;\r | |
176 | Pool->Used = 0;\r | |
177 | Pool->MemoryType = MemoryType;\r | |
178 | for (Index=0; Index < MAX_POOL_LIST; Index++) {\r | |
179 | InitializeListHead (&Pool->FreeList[Index]);\r | |
180 | }\r | |
181 | \r | |
e94a9ff7 | 182 | InsertHeadList (&mPoolHeadList, &Pool->Link);\r |
28a00297 | 183 | \r |
184 | return Pool;\r | |
185 | }\r | |
186 | \r | |
187 | return NULL;\r | |
188 | }\r | |
189 | \r | |
022c6d45 | 190 | \r |
28a00297 | 191 | \r |
162ed594 | 192 | /**\r |
193 | Allocate pool of a particular type.\r | |
194 | \r | |
022c6d45 | 195 | @param PoolType Type of pool to allocate\r |
196 | @param Size The amount of pool to allocate\r | |
197 | @param Buffer The address to return a pointer to the allocated\r | |
198 | pool\r | |
162ed594 | 199 | \r |
2eb989bc SZ |
200 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
201 | PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.\r | |
202 | PoolType is EfiPersistentMemory.\r | |
022c6d45 | 203 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r |
162ed594 | 204 | @retval EFI_SUCCESS Pool successfully allocated.\r |
205 | \r | |
206 | **/\r | |
28a00297 | 207 | EFI_STATUS\r |
208 | EFIAPI\r | |
84edd20b | 209 | CoreInternalAllocatePool (\r |
28a00297 | 210 | IN EFI_MEMORY_TYPE PoolType,\r |
211 | IN UINTN Size,\r | |
212 | OUT VOID **Buffer\r | |
213 | )\r | |
28a00297 | 214 | {\r |
215 | EFI_STATUS Status;\r | |
216 | \r | |
217 | //\r | |
218 | // If it's not a valid type, fail it\r | |
219 | //\r | |
8ee25f48 | 220 | if ((PoolType >= EfiMaxMemoryType && PoolType < MEMORY_TYPE_OEM_RESERVED_MIN) ||\r |
a671a012 | 221 | (PoolType == EfiConventionalMemory) || (PoolType == EfiPersistentMemory)) {\r |
28a00297 | 222 | return EFI_INVALID_PARAMETER;\r |
223 | }\r | |
022c6d45 | 224 | \r |
3e058701 ED |
225 | if (Buffer == NULL) {\r |
226 | return EFI_INVALID_PARAMETER;\r | |
227 | }\r | |
228 | \r | |
28a00297 | 229 | *Buffer = NULL;\r |
022c6d45 | 230 | \r |
28a00297 | 231 | //\r |
232 | // If size is too large, fail it\r | |
233 | // Base on the EFI spec, return status of EFI_OUT_OF_RESOURCES\r | |
234 | //\r | |
235 | if (Size > MAX_POOL_SIZE) {\r | |
236 | return EFI_OUT_OF_RESOURCES;\r | |
237 | }\r | |
238 | \r | |
239 | //\r | |
240 | // Acquire the memory lock and make the allocation\r | |
241 | //\r | |
242 | Status = CoreAcquireLockOrFail (&gMemoryLock);\r | |
243 | if (EFI_ERROR (Status)) {\r | |
244 | return EFI_OUT_OF_RESOURCES;\r | |
245 | }\r | |
246 | \r | |
247 | *Buffer = CoreAllocatePoolI (PoolType, Size);\r | |
248 | CoreReleaseMemoryLock ();\r | |
249 | return (*Buffer != NULL) ? EFI_SUCCESS : EFI_OUT_OF_RESOURCES;\r | |
250 | }\r | |
251 | \r | |
84edd20b SZ |
252 | /**\r |
253 | Allocate pool of a particular type.\r | |
254 | \r | |
255 | @param PoolType Type of pool to allocate\r | |
256 | @param Size The amount of pool to allocate\r | |
257 | @param Buffer The address to return a pointer to the allocated\r | |
258 | pool\r | |
259 | \r | |
2eb989bc SZ |
260 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
261 | PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.\r | |
262 | PoolType is EfiPersistentMemory.\r | |
84edd20b SZ |
263 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r |
264 | @retval EFI_SUCCESS Pool successfully allocated.\r | |
265 | \r | |
266 | **/\r | |
267 | EFI_STATUS\r | |
268 | EFIAPI\r | |
269 | CoreAllocatePool (\r | |
270 | IN EFI_MEMORY_TYPE PoolType,\r | |
271 | IN UINTN Size,\r | |
272 | OUT VOID **Buffer\r | |
273 | )\r | |
274 | {\r | |
275 | EFI_STATUS Status;\r | |
28a00297 | 276 | \r |
84edd20b SZ |
277 | Status = CoreInternalAllocatePool (PoolType, Size, Buffer);\r |
278 | if (!EFI_ERROR (Status)) {\r | |
279 | CoreUpdateProfile ((EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0), MemoryProfileActionAllocatePool, PoolType, Size, *Buffer);\r | |
280 | }\r | |
281 | return Status;\r | |
282 | }\r | |
28a00297 | 283 | \r |
162ed594 | 284 | /**\r |
28a00297 | 285 | Internal function to allocate pool of a particular type.\r |
28a00297 | 286 | Caller must have the memory lock held\r |
287 | \r | |
022c6d45 | 288 | @param PoolType Type of pool to allocate\r |
289 | @param Size The amount of pool to allocate\r | |
28a00297 | 290 | \r |
162ed594 | 291 | @return The allocate pool, or NULL\r |
28a00297 | 292 | \r |
162ed594 | 293 | **/\r |
294 | VOID *\r | |
295 | CoreAllocatePoolI (\r | |
296 | IN EFI_MEMORY_TYPE PoolType,\r | |
297 | IN UINTN Size\r | |
298 | )\r | |
28a00297 | 299 | {\r |
300 | POOL *Pool;\r | |
301 | POOL_FREE *Free;\r | |
302 | POOL_HEAD *Head;\r | |
303 | POOL_TAIL *Tail;\r | |
304 | CHAR8 *NewPage;\r | |
305 | VOID *Buffer;\r | |
306 | UINTN Index;\r | |
307 | UINTN FSize;\r | |
6860b92c | 308 | UINTN Offset, MaxOffset;\r |
28a00297 | 309 | UINTN NoPages;\r |
7970100c | 310 | UINTN Granularity;\r |
28a00297 | 311 | \r |
312 | ASSERT_LOCKED (&gMemoryLock);\r | |
313 | \r | |
7970100c AB |
314 | if (PoolType == EfiACPIReclaimMemory ||\r |
315 | PoolType == EfiACPIMemoryNVS ||\r | |
316 | PoolType == EfiRuntimeServicesCode ||\r | |
317 | PoolType == EfiRuntimeServicesData) {\r | |
318 | \r | |
319 | Granularity = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;\r | |
320 | } else {\r | |
321 | Granularity = DEFAULT_PAGE_ALLOCATION;\r | |
322 | }\r | |
323 | \r | |
28a00297 | 324 | //\r |
325 | // Adjust the size by the pool header & tail overhead\r | |
326 | //\r | |
022c6d45 | 327 | \r |
28a00297 | 328 | //\r |
329 | // Adjusting the Size to be of proper alignment so that\r | |
330 | // we don't get an unaligned access fault later when\r | |
331 | // pool_Tail is being initialized\r | |
332 | //\r | |
f0d5cbb6 | 333 | Size = ALIGN_VARIABLE (Size);\r |
28a00297 | 334 | \r |
335 | Size += POOL_OVERHEAD;\r | |
336 | Index = SIZE_TO_LIST(Size);\r | |
337 | Pool = LookupPoolHead (PoolType);\r | |
338 | if (Pool== NULL) {\r | |
339 | return NULL;\r | |
340 | }\r | |
341 | Head = NULL;\r | |
342 | \r | |
343 | //\r | |
344 | // If allocation is over max size, just allocate pages for the request\r | |
345 | // (slow)\r | |
346 | //\r | |
f2c7daf6 | 347 | if (Index >= SIZE_TO_LIST (Granularity)) {\r |
7970100c AB |
348 | NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (Granularity) - 1;\r |
349 | NoPages &= ~(UINTN)(EFI_SIZE_TO_PAGES (Granularity) - 1);\r | |
350 | Head = CoreAllocatePoolPages (PoolType, NoPages, Granularity);\r | |
28a00297 | 351 | goto Done;\r |
352 | }\r | |
353 | \r | |
354 | //\r | |
355 | // If there's no free pool in the proper list size, go get some more pages\r | |
356 | //\r | |
357 | if (IsListEmpty (&Pool->FreeList[Index])) {\r | |
358 | \r | |
6860b92c AB |
359 | Offset = LIST_TO_SIZE (Index);\r |
360 | MaxOffset = Granularity;\r | |
361 | \r | |
362 | //\r | |
363 | // Check the bins holding larger blocks, and carve one up if needed\r | |
364 | //\r | |
365 | while (++Index < SIZE_TO_LIST (Granularity)) {\r | |
366 | if (!IsListEmpty (&Pool->FreeList[Index])) {\r | |
367 | Free = CR (Pool->FreeList[Index].ForwardLink, POOL_FREE, Link, POOL_FREE_SIGNATURE);\r | |
368 | RemoveEntryList (&Free->Link);\r | |
369 | NewPage = (VOID *) Free;\r | |
370 | MaxOffset = LIST_TO_SIZE (Index);\r | |
371 | goto Carve;\r | |
372 | }\r | |
373 | }\r | |
374 | \r | |
28a00297 | 375 | //\r |
376 | // Get another page\r | |
377 | //\r | |
7970100c | 378 | NewPage = CoreAllocatePoolPages(PoolType, EFI_SIZE_TO_PAGES (Granularity), Granularity);\r |
28a00297 | 379 | if (NewPage == NULL) {\r |
380 | goto Done;\r | |
381 | }\r | |
382 | \r | |
383 | //\r | |
f8aabf6e | 384 | // Serve the allocation request from the head of the allocated block\r |
28a00297 | 385 | //\r |
6860b92c | 386 | Carve:\r |
f8aabf6e | 387 | Head = (POOL_HEAD *) NewPage;\r |
f8aabf6e AB |
388 | \r |
389 | //\r | |
390 | // Carve up remaining space into free pool blocks\r | |
391 | //\r | |
6860b92c AB |
392 | Index--;\r |
393 | while (Offset < MaxOffset) {\r | |
28a00297 | 394 | ASSERT (Index < MAX_POOL_LIST);\r |
395 | FSize = LIST_TO_SIZE(Index);\r | |
396 | \r | |
6860b92c | 397 | while (Offset + FSize <= MaxOffset) {\r |
022c6d45 | 398 | Free = (POOL_FREE *) &NewPage[Offset];\r |
28a00297 | 399 | Free->Signature = POOL_FREE_SIGNATURE;\r |
400 | Free->Index = (UINT32)Index;\r | |
401 | InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r | |
162ed594 | 402 | Offset += FSize;\r |
28a00297 | 403 | }\r |
28a00297 | 404 | Index -= 1;\r |
405 | }\r | |
406 | \r | |
6860b92c | 407 | ASSERT (Offset == MaxOffset);\r |
f8aabf6e | 408 | goto Done;\r |
28a00297 | 409 | }\r |
410 | \r | |
411 | //\r | |
412 | // Remove entry from free pool list\r | |
413 | //\r | |
414 | Free = CR (Pool->FreeList[Index].ForwardLink, POOL_FREE, Link, POOL_FREE_SIGNATURE);\r | |
415 | RemoveEntryList (&Free->Link);\r | |
416 | \r | |
417 | Head = (POOL_HEAD *) Free;\r | |
418 | \r | |
419 | Done:\r | |
420 | Buffer = NULL;\r | |
421 | \r | |
422 | if (Head != NULL) {\r | |
022c6d45 | 423 | \r |
28a00297 | 424 | //\r |
425 | // If we have a pool buffer, fill in the header & tail info\r | |
426 | //\r | |
427 | Head->Signature = POOL_HEAD_SIGNATURE;\r | |
bb683bf4 | 428 | Head->Size = Size;\r |
28a00297 | 429 | Head->Type = (EFI_MEMORY_TYPE) PoolType;\r |
430 | Tail = HEAD_TO_TAIL (Head);\r | |
431 | Tail->Signature = POOL_TAIL_SIGNATURE;\r | |
bb683bf4 | 432 | Tail->Size = Size;\r |
28a00297 | 433 | Buffer = Head->Data;\r |
434 | DEBUG_CLEAR_MEMORY (Buffer, Size - POOL_OVERHEAD);\r | |
435 | \r | |
e94a9ff7 | 436 | DEBUG ((\r |
437 | DEBUG_POOL,\r | |
57b4ecb9 | 438 | "AllocatePoolI: Type %x, Addr %p (len %lx) %,ld\n", PoolType,\r |
022c6d45 | 439 | Buffer,\r |
57b4ecb9 | 440 | (UINT64)(Size - POOL_OVERHEAD),\r |
441 | (UINT64) Pool->Used\r | |
e94a9ff7 | 442 | ));\r |
28a00297 | 443 | \r |
444 | //\r | |
445 | // Account the allocation\r | |
446 | //\r | |
447 | Pool->Used += Size;\r | |
448 | \r | |
449 | } else {\r | |
57b4ecb9 | 450 | DEBUG ((DEBUG_ERROR | DEBUG_POOL, "AllocatePool: failed to allocate %ld bytes\n", (UINT64) Size));\r |
28a00297 | 451 | }\r |
452 | \r | |
453 | return Buffer;\r | |
454 | }\r | |
022c6d45 | 455 | \r |
28a00297 | 456 | \r |
457 | \r | |
162ed594 | 458 | /**\r |
28a00297 | 459 | Frees pool.\r |
460 | \r | |
022c6d45 | 461 | @param Buffer The allocated pool entry to free\r |
28a00297 | 462 | \r |
022c6d45 | 463 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r |
162ed594 | 464 | @retval EFI_SUCCESS Pool successfully freed.\r |
28a00297 | 465 | \r |
162ed594 | 466 | **/\r |
467 | EFI_STATUS\r | |
468 | EFIAPI\r | |
84edd20b | 469 | CoreInternalFreePool (\r |
162ed594 | 470 | IN VOID *Buffer\r |
471 | )\r | |
28a00297 | 472 | {\r |
473 | EFI_STATUS Status;\r | |
474 | \r | |
e94a9ff7 | 475 | if (Buffer == NULL) {\r |
28a00297 | 476 | return EFI_INVALID_PARAMETER;\r |
477 | }\r | |
478 | \r | |
479 | CoreAcquireMemoryLock ();\r | |
480 | Status = CoreFreePoolI (Buffer);\r | |
481 | CoreReleaseMemoryLock ();\r | |
482 | return Status;\r | |
483 | }\r | |
484 | \r | |
84edd20b SZ |
485 | /**\r |
486 | Frees pool.\r | |
487 | \r | |
488 | @param Buffer The allocated pool entry to free\r | |
489 | \r | |
490 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r | |
491 | @retval EFI_SUCCESS Pool successfully freed.\r | |
492 | \r | |
493 | **/\r | |
494 | EFI_STATUS\r | |
495 | EFIAPI\r | |
496 | CoreFreePool (\r | |
497 | IN VOID *Buffer\r | |
498 | )\r | |
499 | {\r | |
500 | EFI_STATUS Status;\r | |
736a692e HT |
501 | \r |
502 | Status = CoreInternalFreePool (Buffer);\r | |
503 | if (!EFI_ERROR (Status)) {\r | |
504 | CoreUpdateProfile ((EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0), MemoryProfileActionFreePool, (EFI_MEMORY_TYPE) 0, 0, Buffer);\r | |
505 | }\r | |
506 | return Status;\r | |
507 | }\r | |
28a00297 | 508 | \r |
162ed594 | 509 | /**\r |
28a00297 | 510 | Internal function to free a pool entry.\r |
28a00297 | 511 | Caller must have the memory lock held\r |
512 | \r | |
022c6d45 | 513 | @param Buffer The allocated pool entry to free\r |
28a00297 | 514 | \r |
022c6d45 | 515 | @retval EFI_INVALID_PARAMETER Buffer not valid\r |
162ed594 | 516 | @retval EFI_SUCCESS Buffer successfully freed.\r |
28a00297 | 517 | \r |
162ed594 | 518 | **/\r |
519 | EFI_STATUS\r | |
520 | CoreFreePoolI (\r | |
521 | IN VOID *Buffer\r | |
522 | )\r | |
28a00297 | 523 | {\r |
524 | POOL *Pool;\r | |
525 | POOL_HEAD *Head;\r | |
526 | POOL_TAIL *Tail;\r | |
527 | POOL_FREE *Free;\r | |
528 | UINTN Index;\r | |
529 | UINTN NoPages;\r | |
530 | UINTN Size;\r | |
531 | CHAR8 *NewPage;\r | |
162ed594 | 532 | UINTN Offset;\r |
28a00297 | 533 | BOOLEAN AllFree;\r |
7970100c | 534 | UINTN Granularity;\r |
28a00297 | 535 | \r |
57b4ecb9 | 536 | ASSERT(Buffer != NULL);\r |
28a00297 | 537 | //\r |
538 | // Get the head & tail of the pool entry\r | |
539 | //\r | |
540 | Head = CR (Buffer, POOL_HEAD, Data, POOL_HEAD_SIGNATURE);\r | |
57b4ecb9 | 541 | ASSERT(Head != NULL);\r |
28a00297 | 542 | \r |
543 | if (Head->Signature != POOL_HEAD_SIGNATURE) {\r | |
544 | return EFI_INVALID_PARAMETER;\r | |
545 | }\r | |
546 | \r | |
547 | Tail = HEAD_TO_TAIL (Head);\r | |
57b4ecb9 | 548 | ASSERT(Tail != NULL);\r |
28a00297 | 549 | \r |
550 | //\r | |
551 | // Debug\r | |
552 | //\r | |
553 | ASSERT (Tail->Signature == POOL_TAIL_SIGNATURE);\r | |
554 | ASSERT (Head->Size == Tail->Size);\r | |
555 | ASSERT_LOCKED (&gMemoryLock);\r | |
556 | \r | |
557 | if (Tail->Signature != POOL_TAIL_SIGNATURE) {\r | |
558 | return EFI_INVALID_PARAMETER;\r | |
559 | }\r | |
560 | \r | |
561 | if (Head->Size != Tail->Size) {\r | |
562 | return EFI_INVALID_PARAMETER;\r | |
563 | }\r | |
564 | \r | |
565 | //\r | |
566 | // Determine the pool type and account for it\r | |
567 | //\r | |
568 | Size = Head->Size;\r | |
569 | Pool = LookupPoolHead (Head->Type);\r | |
570 | if (Pool == NULL) {\r | |
571 | return EFI_INVALID_PARAMETER;\r | |
572 | }\r | |
573 | Pool->Used -= Size;\r | |
57b4ecb9 | 574 | DEBUG ((DEBUG_POOL, "FreePool: %p (len %lx) %,ld\n", Head->Data, (UINT64)(Head->Size - POOL_OVERHEAD), (UINT64) Pool->Used));\r |
28a00297 | 575 | \r |
7970100c AB |
576 | if (Head->Type == EfiACPIReclaimMemory ||\r |
577 | Head->Type == EfiACPIMemoryNVS ||\r | |
578 | Head->Type == EfiRuntimeServicesCode ||\r | |
579 | Head->Type == EfiRuntimeServicesData) {\r | |
580 | \r | |
581 | Granularity = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;\r | |
582 | } else {\r | |
583 | Granularity = DEFAULT_PAGE_ALLOCATION;\r | |
584 | }\r | |
585 | \r | |
28a00297 | 586 | //\r |
022c6d45 | 587 | // Determine the pool list\r |
28a00297 | 588 | //\r |
589 | Index = SIZE_TO_LIST(Size);\r | |
590 | DEBUG_CLEAR_MEMORY (Head, Size);\r | |
591 | \r | |
592 | //\r | |
593 | // If it's not on the list, it must be pool pages\r | |
594 | //\r | |
f2c7daf6 | 595 | if (Index >= SIZE_TO_LIST (Granularity)) {\r |
28a00297 | 596 | \r |
597 | //\r | |
598 | // Return the memory pages back to free memory\r | |
599 | //\r | |
7970100c AB |
600 | NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (Granularity) - 1;\r |
601 | NoPages &= ~(UINTN)(EFI_SIZE_TO_PAGES (Granularity) - 1);\r | |
28a00297 | 602 | CoreFreePoolPages ((EFI_PHYSICAL_ADDRESS) (UINTN) Head, NoPages);\r |
603 | \r | |
604 | } else {\r | |
605 | \r | |
606 | //\r | |
607 | // Put the pool entry onto the free pool list\r | |
608 | //\r | |
609 | Free = (POOL_FREE *) Head;\r | |
57b4ecb9 | 610 | ASSERT(Free != NULL);\r |
28a00297 | 611 | Free->Signature = POOL_FREE_SIGNATURE;\r |
612 | Free->Index = (UINT32)Index;\r | |
613 | InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r | |
614 | \r | |
615 | //\r | |
022c6d45 | 616 | // See if all the pool entries in the same page as Free are freed pool\r |
28a00297 | 617 | // entries\r |
618 | //\r | |
7970100c | 619 | NewPage = (CHAR8 *)((UINTN)Free & ~(Granularity - 1));\r |
28a00297 | 620 | Free = (POOL_FREE *) &NewPage[0];\r |
e94a9ff7 | 621 | ASSERT(Free != NULL);\r |
28a00297 | 622 | \r |
623 | if (Free->Signature == POOL_FREE_SIGNATURE) {\r | |
624 | \r | |
28a00297 | 625 | AllFree = TRUE;\r |
162ed594 | 626 | Offset = 0;\r |
022c6d45 | 627 | \r |
7970100c | 628 | while ((Offset < Granularity) && (AllFree)) {\r |
7e8e2205 AB |
629 | Free = (POOL_FREE *) &NewPage[Offset];\r |
630 | ASSERT(Free != NULL);\r | |
631 | if (Free->Signature != POOL_FREE_SIGNATURE) {\r | |
632 | AllFree = FALSE;\r | |
28a00297 | 633 | }\r |
7e8e2205 | 634 | Offset += LIST_TO_SIZE(Free->Index);\r |
28a00297 | 635 | }\r |
636 | \r | |
637 | if (AllFree) {\r | |
638 | \r | |
639 | //\r | |
022c6d45 | 640 | // All of the pool entries in the same page as Free are free pool\r |
28a00297 | 641 | // entries\r |
642 | // Remove all of these pool entries from the free loop lists.\r | |
643 | //\r | |
644 | Free = (POOL_FREE *) &NewPage[0];\r | |
57b4ecb9 | 645 | ASSERT(Free != NULL);\r |
162ed594 | 646 | Offset = 0;\r |
022c6d45 | 647 | \r |
7970100c | 648 | while (Offset < Granularity) {\r |
7e8e2205 AB |
649 | Free = (POOL_FREE *) &NewPage[Offset];\r |
650 | ASSERT(Free != NULL);\r | |
651 | RemoveEntryList (&Free->Link);\r | |
652 | Offset += LIST_TO_SIZE(Free->Index);\r | |
28a00297 | 653 | }\r |
654 | \r | |
655 | //\r | |
656 | // Free the page\r | |
657 | //\r | |
7970100c | 658 | CoreFreePoolPages ((EFI_PHYSICAL_ADDRESS) (UINTN)NewPage, EFI_SIZE_TO_PAGES (Granularity));\r |
28a00297 | 659 | }\r |
660 | }\r | |
661 | }\r | |
662 | \r | |
663 | //\r | |
09159a29 | 664 | // If this is an OS/OEM specific memory type, then check to see if the last\r |
28a00297 | 665 | // portion of that memory type has been freed. If it has, then free the\r |
666 | // list entry for that memory type\r | |
667 | //\r | |
09159a29 | 668 | if (((UINT32) Pool->MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) && Pool->Used == 0) {\r |
28a00297 | 669 | RemoveEntryList (&Pool->Link);\r |
670 | CoreFreePoolI (Pool);\r | |
671 | }\r | |
672 | \r | |
673 | return EFI_SUCCESS;\r | |
674 | }\r | |
84edd20b | 675 | \r |