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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 |
f31c36c2 AB |
18 | STATIC EFI_LOCK mPoolMemoryLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_NOTIFY);\r |
19 | \r | |
f3f2e05d | 20 | #define POOL_FREE_SIGNATURE SIGNATURE_32('p','f','r','0')\r |
28a00297 | 21 | typedef struct {\r |
22 | UINT32 Signature;\r | |
23 | UINT32 Index;\r | |
24 | LIST_ENTRY Link;\r | |
25 | } POOL_FREE;\r | |
26 | \r | |
27 | \r | |
f3f2e05d | 28 | #define POOL_HEAD_SIGNATURE SIGNATURE_32('p','h','d','0')\r |
28a00297 | 29 | typedef struct {\r |
30 | UINT32 Signature;\r | |
bb683bf4 | 31 | UINT32 Reserved;\r |
28a00297 | 32 | EFI_MEMORY_TYPE Type;\r |
bb683bf4 | 33 | UINTN Size;\r |
28a00297 | 34 | CHAR8 Data[1];\r |
35 | } POOL_HEAD;\r | |
36 | \r | |
f3f2e05d | 37 | #define SIZE_OF_POOL_HEAD OFFSET_OF(POOL_HEAD,Data)\r |
28a00297 | 38 | \r |
f3f2e05d | 39 | #define POOL_TAIL_SIGNATURE SIGNATURE_32('p','t','a','l')\r |
28a00297 | 40 | typedef struct {\r |
41 | UINT32 Signature;\r | |
bb683bf4 SZ |
42 | UINT32 Reserved;\r |
43 | UINTN Size;\r | |
28a00297 | 44 | } POOL_TAIL;\r |
45 | \r | |
28a00297 | 46 | #define POOL_OVERHEAD (SIZE_OF_POOL_HEAD + sizeof(POOL_TAIL))\r |
47 | \r | |
48 | #define HEAD_TO_TAIL(a) \\r | |
49 | ((POOL_TAIL *) (((CHAR8 *) (a)) + (a)->Size - sizeof(POOL_TAIL)));\r | |
50 | \r | |
f2c7daf6 AB |
51 | //\r |
52 | // Each element is the sum of the 2 previous ones: this allows us to migrate\r | |
53 | // blocks between bins by splitting them up, while not wasting too much memory\r | |
54 | // as we would in a strict power-of-2 sequence\r | |
55 | //\r | |
56 | STATIC CONST UINT16 mPoolSizeTable[] = {\r | |
467d5f6b | 57 | 128, 256, 384, 640, 1024, 1664, 2688, 4352, 7040, 11392, 18432, 29824\r |
f2c7daf6 | 58 | };\r |
28a00297 | 59 | \r |
f2c7daf6 AB |
60 | #define SIZE_TO_LIST(a) (GetPoolIndexFromSize (a))\r |
61 | #define LIST_TO_SIZE(a) (mPoolSizeTable [a])\r | |
28a00297 | 62 | \r |
ed998e06 | 63 | #define MAX_POOL_LIST (ARRAY_SIZE (mPoolSizeTable))\r |
28a00297 | 64 | \r |
65 | #define MAX_POOL_SIZE (MAX_ADDRESS - POOL_OVERHEAD)\r | |
66 | \r | |
67 | //\r | |
68 | // Globals\r | |
69 | //\r | |
70 | \r | |
f3f2e05d | 71 | #define POOL_SIGNATURE SIGNATURE_32('p','l','s','t')\r |
28a00297 | 72 | typedef struct {\r |
73 | INTN Signature;\r | |
74 | UINTN Used;\r | |
75 | EFI_MEMORY_TYPE MemoryType;\r | |
76 | LIST_ENTRY FreeList[MAX_POOL_LIST];\r | |
77 | LIST_ENTRY Link;\r | |
022c6d45 | 78 | } POOL;\r |
28a00297 | 79 | \r |
28a00297 | 80 | //\r |
e94a9ff7 | 81 | // Pool header for each memory type.\r |
82 | //\r | |
83 | POOL mPoolHead[EfiMaxMemoryType];\r | |
84 | \r | |
28a00297 | 85 | //\r |
e94a9ff7 | 86 | // List of pool header to search for the appropriate memory type.\r |
28a00297 | 87 | //\r |
57b4ecb9 | 88 | LIST_ENTRY mPoolHeadList = INITIALIZE_LIST_HEAD_VARIABLE (mPoolHeadList);\r |
28a00297 | 89 | \r |
dd51e45b SQ |
90 | /**\r |
91 | Get pool size table index from the specified size.\r | |
92 | \r | |
93 | @param Size The specified size to get index from pool table.\r | |
94 | \r | |
95 | @return The index of pool size table.\r | |
96 | \r | |
97 | **/\r | |
f2c7daf6 AB |
98 | STATIC\r |
99 | UINTN\r | |
100 | GetPoolIndexFromSize (\r | |
101 | UINTN Size\r | |
102 | )\r | |
103 | {\r | |
104 | UINTN Index;\r | |
105 | \r | |
106 | for (Index = 0; Index < MAX_POOL_LIST; Index++) {\r | |
107 | if (mPoolSizeTable [Index] >= Size) {\r | |
108 | return Index;\r | |
109 | }\r | |
110 | }\r | |
111 | return MAX_POOL_LIST;\r | |
112 | }\r | |
162ed594 | 113 | \r |
114 | /**\r | |
115 | Called to initialize the pool.\r | |
116 | \r | |
117 | **/\r | |
28a00297 | 118 | VOID\r |
119 | CoreInitializePool (\r | |
120 | VOID\r | |
121 | )\r | |
28a00297 | 122 | {\r |
123 | UINTN Type;\r | |
124 | UINTN Index;\r | |
125 | \r | |
126 | for (Type=0; Type < EfiMaxMemoryType; Type++) {\r | |
e94a9ff7 | 127 | mPoolHead[Type].Signature = 0;\r |
128 | mPoolHead[Type].Used = 0;\r | |
129 | mPoolHead[Type].MemoryType = (EFI_MEMORY_TYPE) Type;\r | |
28a00297 | 130 | for (Index=0; Index < MAX_POOL_LIST; Index++) {\r |
bb683bf4 | 131 | InitializeListHead (&mPoolHead[Type].FreeList[Index]);\r |
28a00297 | 132 | }\r |
133 | }\r | |
28a00297 | 134 | }\r |
135 | \r | |
28a00297 | 136 | \r |
162ed594 | 137 | /**\r |
28a00297 | 138 | Look up pool head for specified memory type.\r |
139 | \r | |
022c6d45 | 140 | @param MemoryType Memory type of which pool head is looked for\r |
28a00297 | 141 | \r |
162ed594 | 142 | @return Pointer of Corresponding pool head.\r |
28a00297 | 143 | \r |
162ed594 | 144 | **/\r |
162ed594 | 145 | POOL *\r |
146 | LookupPoolHead (\r | |
147 | IN EFI_MEMORY_TYPE MemoryType\r | |
148 | )\r | |
28a00297 | 149 | {\r |
150 | LIST_ENTRY *Link;\r | |
151 | POOL *Pool;\r | |
152 | UINTN Index;\r | |
153 | \r | |
3d78c020 | 154 | if ((UINT32)MemoryType < EfiMaxMemoryType) {\r |
e94a9ff7 | 155 | return &mPoolHead[MemoryType];\r |
28a00297 | 156 | }\r |
157 | \r | |
dc8d93ca | 158 | //\r |
8ee25f48 SZ |
159 | // MemoryType values in the range 0x80000000..0xFFFFFFFF are reserved for use by UEFI\r |
160 | // OS loaders that are provided by operating system vendors.\r | |
161 | // MemoryType values in the range 0x70000000..0x7FFFFFFF are reserved for OEM use.\r | |
dc8d93ca | 162 | //\r |
8ee25f48 | 163 | if ((UINT32) MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) {\r |
28a00297 | 164 | \r |
e94a9ff7 | 165 | for (Link = mPoolHeadList.ForwardLink; Link != &mPoolHeadList; Link = Link->ForwardLink) {\r |
28a00297 | 166 | Pool = CR(Link, POOL, Link, POOL_SIGNATURE);\r |
167 | if (Pool->MemoryType == MemoryType) {\r | |
168 | return Pool;\r | |
169 | }\r | |
170 | }\r | |
171 | \r | |
172 | Pool = CoreAllocatePoolI (EfiBootServicesData, sizeof (POOL));\r | |
173 | if (Pool == NULL) {\r | |
174 | return NULL;\r | |
175 | }\r | |
176 | \r | |
177 | Pool->Signature = POOL_SIGNATURE;\r | |
178 | Pool->Used = 0;\r | |
179 | Pool->MemoryType = MemoryType;\r | |
180 | for (Index=0; Index < MAX_POOL_LIST; Index++) {\r | |
181 | InitializeListHead (&Pool->FreeList[Index]);\r | |
182 | }\r | |
183 | \r | |
e94a9ff7 | 184 | InsertHeadList (&mPoolHeadList, &Pool->Link);\r |
28a00297 | 185 | \r |
186 | return Pool;\r | |
187 | }\r | |
188 | \r | |
189 | return NULL;\r | |
190 | }\r | |
191 | \r | |
022c6d45 | 192 | \r |
28a00297 | 193 | \r |
162ed594 | 194 | /**\r |
195 | Allocate pool of a particular type.\r | |
196 | \r | |
022c6d45 | 197 | @param PoolType Type of pool to allocate\r |
198 | @param Size The amount of pool to allocate\r | |
199 | @param Buffer The address to return a pointer to the allocated\r | |
200 | pool\r | |
162ed594 | 201 | \r |
2eb989bc SZ |
202 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
203 | PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.\r | |
204 | PoolType is EfiPersistentMemory.\r | |
022c6d45 | 205 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r |
162ed594 | 206 | @retval EFI_SUCCESS Pool successfully allocated.\r |
207 | \r | |
208 | **/\r | |
28a00297 | 209 | EFI_STATUS\r |
210 | EFIAPI\r | |
84edd20b | 211 | CoreInternalAllocatePool (\r |
28a00297 | 212 | IN EFI_MEMORY_TYPE PoolType,\r |
213 | IN UINTN Size,\r | |
214 | OUT VOID **Buffer\r | |
215 | )\r | |
28a00297 | 216 | {\r |
217 | EFI_STATUS Status;\r | |
218 | \r | |
219 | //\r | |
220 | // If it's not a valid type, fail it\r | |
221 | //\r | |
8ee25f48 | 222 | if ((PoolType >= EfiMaxMemoryType && PoolType < MEMORY_TYPE_OEM_RESERVED_MIN) ||\r |
a671a012 | 223 | (PoolType == EfiConventionalMemory) || (PoolType == EfiPersistentMemory)) {\r |
28a00297 | 224 | return EFI_INVALID_PARAMETER;\r |
225 | }\r | |
022c6d45 | 226 | \r |
3e058701 ED |
227 | if (Buffer == NULL) {\r |
228 | return EFI_INVALID_PARAMETER;\r | |
229 | }\r | |
230 | \r | |
28a00297 | 231 | *Buffer = NULL;\r |
022c6d45 | 232 | \r |
28a00297 | 233 | //\r |
234 | // If size is too large, fail it\r | |
235 | // Base on the EFI spec, return status of EFI_OUT_OF_RESOURCES\r | |
236 | //\r | |
237 | if (Size > MAX_POOL_SIZE) {\r | |
238 | return EFI_OUT_OF_RESOURCES;\r | |
239 | }\r | |
240 | \r | |
241 | //\r | |
242 | // Acquire the memory lock and make the allocation\r | |
243 | //\r | |
f31c36c2 | 244 | Status = CoreAcquireLockOrFail (&mPoolMemoryLock);\r |
28a00297 | 245 | if (EFI_ERROR (Status)) {\r |
246 | return EFI_OUT_OF_RESOURCES;\r | |
247 | }\r | |
248 | \r | |
249 | *Buffer = CoreAllocatePoolI (PoolType, Size);\r | |
f31c36c2 | 250 | CoreReleaseLock (&mPoolMemoryLock);\r |
28a00297 | 251 | return (*Buffer != NULL) ? EFI_SUCCESS : EFI_OUT_OF_RESOURCES;\r |
252 | }\r | |
253 | \r | |
84edd20b SZ |
254 | /**\r |
255 | Allocate pool of a particular type.\r | |
256 | \r | |
257 | @param PoolType Type of pool to allocate\r | |
258 | @param Size The amount of pool to allocate\r | |
259 | @param Buffer The address to return a pointer to the allocated\r | |
260 | pool\r | |
261 | \r | |
2eb989bc SZ |
262 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
263 | PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.\r | |
264 | PoolType is EfiPersistentMemory.\r | |
84edd20b SZ |
265 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r |
266 | @retval EFI_SUCCESS Pool successfully allocated.\r | |
267 | \r | |
268 | **/\r | |
269 | EFI_STATUS\r | |
270 | EFIAPI\r | |
271 | CoreAllocatePool (\r | |
272 | IN EFI_MEMORY_TYPE PoolType,\r | |
273 | IN UINTN Size,\r | |
274 | OUT VOID **Buffer\r | |
275 | )\r | |
276 | {\r | |
277 | EFI_STATUS Status;\r | |
28a00297 | 278 | \r |
84edd20b SZ |
279 | Status = CoreInternalAllocatePool (PoolType, Size, Buffer);\r |
280 | if (!EFI_ERROR (Status)) {\r | |
1d60fe96 SZ |
281 | CoreUpdateProfile (\r |
282 | (EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0),\r | |
283 | MemoryProfileActionAllocatePool,\r | |
284 | PoolType,\r | |
285 | Size,\r | |
286 | *Buffer,\r | |
287 | NULL\r | |
288 | );\r | |
74a88770 | 289 | InstallMemoryAttributesTableOnMemoryAllocation (PoolType);\r |
84edd20b SZ |
290 | }\r |
291 | return Status;\r | |
292 | }\r | |
28a00297 | 293 | \r |
7babb437 BD |
294 | /**\r |
295 | Internal function. Used by the pool functions to allocate pages\r | |
296 | to back pool allocation requests.\r | |
297 | \r | |
298 | @param PoolType The type of memory for the new pool pages\r | |
299 | @param NoPages No of pages to allocate\r | |
300 | @param Granularity Bits to align.\r | |
301 | \r | |
302 | @return The allocated memory, or NULL\r | |
303 | \r | |
304 | **/\r | |
f31c36c2 AB |
305 | STATIC\r |
306 | VOID *\r | |
307 | CoreAllocatePoolPagesI (\r | |
308 | IN EFI_MEMORY_TYPE PoolType,\r | |
309 | IN UINTN NoPages,\r | |
310 | IN UINTN Granularity\r | |
311 | )\r | |
312 | {\r | |
313 | VOID *Buffer;\r | |
314 | EFI_STATUS Status;\r | |
315 | \r | |
316 | Status = CoreAcquireLockOrFail (&gMemoryLock);\r | |
317 | if (EFI_ERROR (Status)) {\r | |
318 | return NULL;\r | |
319 | }\r | |
320 | \r | |
321 | Buffer = CoreAllocatePoolPages (PoolType, NoPages, Granularity);\r | |
322 | CoreReleaseMemoryLock ();\r | |
323 | \r | |
7eb927db AB |
324 | if (Buffer != NULL) {\r |
325 | ApplyMemoryProtectionPolicy (EfiConventionalMemory, PoolType,\r | |
326 | (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer, EFI_PAGES_TO_SIZE (NoPages));\r | |
327 | }\r | |
f31c36c2 AB |
328 | return Buffer;\r |
329 | }\r | |
330 | \r | |
162ed594 | 331 | /**\r |
28a00297 | 332 | Internal function to allocate pool of a particular type.\r |
28a00297 | 333 | Caller must have the memory lock held\r |
334 | \r | |
022c6d45 | 335 | @param PoolType Type of pool to allocate\r |
336 | @param Size The amount of pool to allocate\r | |
28a00297 | 337 | \r |
162ed594 | 338 | @return The allocate pool, or NULL\r |
28a00297 | 339 | \r |
162ed594 | 340 | **/\r |
341 | VOID *\r | |
342 | CoreAllocatePoolI (\r | |
343 | IN EFI_MEMORY_TYPE PoolType,\r | |
344 | IN UINTN Size\r | |
345 | )\r | |
28a00297 | 346 | {\r |
347 | POOL *Pool;\r | |
348 | POOL_FREE *Free;\r | |
349 | POOL_HEAD *Head;\r | |
350 | POOL_TAIL *Tail;\r | |
351 | CHAR8 *NewPage;\r | |
352 | VOID *Buffer;\r | |
353 | UINTN Index;\r | |
354 | UINTN FSize;\r | |
6860b92c | 355 | UINTN Offset, MaxOffset;\r |
28a00297 | 356 | UINTN NoPages;\r |
7970100c | 357 | UINTN Granularity;\r |
28a00297 | 358 | \r |
f31c36c2 | 359 | ASSERT_LOCKED (&mPoolMemoryLock);\r |
28a00297 | 360 | \r |
7970100c AB |
361 | if (PoolType == EfiACPIReclaimMemory ||\r |
362 | PoolType == EfiACPIMemoryNVS ||\r | |
363 | PoolType == EfiRuntimeServicesCode ||\r | |
364 | PoolType == EfiRuntimeServicesData) {\r | |
365 | \r | |
d4731a98 | 366 | Granularity = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r |
7970100c | 367 | } else {\r |
d4731a98 | 368 | Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r |
7970100c AB |
369 | }\r |
370 | \r | |
28a00297 | 371 | //\r |
372 | // Adjust the size by the pool header & tail overhead\r | |
373 | //\r | |
022c6d45 | 374 | \r |
28a00297 | 375 | //\r |
376 | // Adjusting the Size to be of proper alignment so that\r | |
377 | // we don't get an unaligned access fault later when\r | |
378 | // pool_Tail is being initialized\r | |
379 | //\r | |
f0d5cbb6 | 380 | Size = ALIGN_VARIABLE (Size);\r |
28a00297 | 381 | \r |
382 | Size += POOL_OVERHEAD;\r | |
383 | Index = SIZE_TO_LIST(Size);\r | |
384 | Pool = LookupPoolHead (PoolType);\r | |
385 | if (Pool== NULL) {\r | |
386 | return NULL;\r | |
387 | }\r | |
388 | Head = NULL;\r | |
389 | \r | |
390 | //\r | |
391 | // If allocation is over max size, just allocate pages for the request\r | |
392 | // (slow)\r | |
393 | //\r | |
f2c7daf6 | 394 | if (Index >= SIZE_TO_LIST (Granularity)) {\r |
7970100c AB |
395 | NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (Granularity) - 1;\r |
396 | NoPages &= ~(UINTN)(EFI_SIZE_TO_PAGES (Granularity) - 1);\r | |
f31c36c2 | 397 | Head = CoreAllocatePoolPagesI (PoolType, NoPages, Granularity);\r |
28a00297 | 398 | goto Done;\r |
399 | }\r | |
400 | \r | |
401 | //\r | |
402 | // If there's no free pool in the proper list size, go get some more pages\r | |
403 | //\r | |
404 | if (IsListEmpty (&Pool->FreeList[Index])) {\r | |
405 | \r | |
6860b92c AB |
406 | Offset = LIST_TO_SIZE (Index);\r |
407 | MaxOffset = Granularity;\r | |
408 | \r | |
409 | //\r | |
410 | // Check the bins holding larger blocks, and carve one up if needed\r | |
411 | //\r | |
412 | while (++Index < SIZE_TO_LIST (Granularity)) {\r | |
413 | if (!IsListEmpty (&Pool->FreeList[Index])) {\r | |
414 | Free = CR (Pool->FreeList[Index].ForwardLink, POOL_FREE, Link, POOL_FREE_SIGNATURE);\r | |
415 | RemoveEntryList (&Free->Link);\r | |
416 | NewPage = (VOID *) Free;\r | |
417 | MaxOffset = LIST_TO_SIZE (Index);\r | |
418 | goto Carve;\r | |
419 | }\r | |
420 | }\r | |
421 | \r | |
28a00297 | 422 | //\r |
423 | // Get another page\r | |
424 | //\r | |
f31c36c2 | 425 | NewPage = CoreAllocatePoolPagesI (PoolType, EFI_SIZE_TO_PAGES (Granularity), Granularity);\r |
28a00297 | 426 | if (NewPage == NULL) {\r |
427 | goto Done;\r | |
428 | }\r | |
429 | \r | |
430 | //\r | |
f8aabf6e | 431 | // Serve the allocation request from the head of the allocated block\r |
28a00297 | 432 | //\r |
6860b92c | 433 | Carve:\r |
f8aabf6e | 434 | Head = (POOL_HEAD *) NewPage;\r |
f8aabf6e AB |
435 | \r |
436 | //\r | |
437 | // Carve up remaining space into free pool blocks\r | |
438 | //\r | |
6860b92c AB |
439 | Index--;\r |
440 | while (Offset < MaxOffset) {\r | |
28a00297 | 441 | ASSERT (Index < MAX_POOL_LIST);\r |
442 | FSize = LIST_TO_SIZE(Index);\r | |
443 | \r | |
6860b92c | 444 | while (Offset + FSize <= MaxOffset) {\r |
022c6d45 | 445 | Free = (POOL_FREE *) &NewPage[Offset];\r |
28a00297 | 446 | Free->Signature = POOL_FREE_SIGNATURE;\r |
447 | Free->Index = (UINT32)Index;\r | |
448 | InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r | |
162ed594 | 449 | Offset += FSize;\r |
28a00297 | 450 | }\r |
28a00297 | 451 | Index -= 1;\r |
452 | }\r | |
453 | \r | |
6860b92c | 454 | ASSERT (Offset == MaxOffset);\r |
f8aabf6e | 455 | goto Done;\r |
28a00297 | 456 | }\r |
457 | \r | |
458 | //\r | |
459 | // Remove entry from free pool list\r | |
460 | //\r | |
461 | Free = CR (Pool->FreeList[Index].ForwardLink, POOL_FREE, Link, POOL_FREE_SIGNATURE);\r | |
462 | RemoveEntryList (&Free->Link);\r | |
463 | \r | |
464 | Head = (POOL_HEAD *) Free;\r | |
465 | \r | |
466 | Done:\r | |
467 | Buffer = NULL;\r | |
468 | \r | |
469 | if (Head != NULL) {\r | |
022c6d45 | 470 | \r |
28a00297 | 471 | //\r |
472 | // If we have a pool buffer, fill in the header & tail info\r | |
473 | //\r | |
474 | Head->Signature = POOL_HEAD_SIGNATURE;\r | |
bb683bf4 | 475 | Head->Size = Size;\r |
28a00297 | 476 | Head->Type = (EFI_MEMORY_TYPE) PoolType;\r |
477 | Tail = HEAD_TO_TAIL (Head);\r | |
478 | Tail->Signature = POOL_TAIL_SIGNATURE;\r | |
bb683bf4 | 479 | Tail->Size = Size;\r |
28a00297 | 480 | Buffer = Head->Data;\r |
481 | DEBUG_CLEAR_MEMORY (Buffer, Size - POOL_OVERHEAD);\r | |
482 | \r | |
e94a9ff7 | 483 | DEBUG ((\r |
484 | DEBUG_POOL,\r | |
57b4ecb9 | 485 | "AllocatePoolI: Type %x, Addr %p (len %lx) %,ld\n", PoolType,\r |
022c6d45 | 486 | Buffer,\r |
57b4ecb9 | 487 | (UINT64)(Size - POOL_OVERHEAD),\r |
488 | (UINT64) Pool->Used\r | |
e94a9ff7 | 489 | ));\r |
28a00297 | 490 | \r |
491 | //\r | |
492 | // Account the allocation\r | |
493 | //\r | |
494 | Pool->Used += Size;\r | |
495 | \r | |
496 | } else {\r | |
57b4ecb9 | 497 | DEBUG ((DEBUG_ERROR | DEBUG_POOL, "AllocatePool: failed to allocate %ld bytes\n", (UINT64) Size));\r |
28a00297 | 498 | }\r |
499 | \r | |
500 | return Buffer;\r | |
501 | }\r | |
022c6d45 | 502 | \r |
28a00297 | 503 | \r |
504 | \r | |
162ed594 | 505 | /**\r |
28a00297 | 506 | Frees pool.\r |
507 | \r | |
022c6d45 | 508 | @param Buffer The allocated pool entry to free\r |
925f0d1a | 509 | @param PoolType Pointer to pool type\r |
28a00297 | 510 | \r |
022c6d45 | 511 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r |
162ed594 | 512 | @retval EFI_SUCCESS Pool successfully freed.\r |
28a00297 | 513 | \r |
162ed594 | 514 | **/\r |
515 | EFI_STATUS\r | |
516 | EFIAPI\r | |
84edd20b | 517 | CoreInternalFreePool (\r |
925f0d1a SZ |
518 | IN VOID *Buffer,\r |
519 | OUT EFI_MEMORY_TYPE *PoolType OPTIONAL\r | |
162ed594 | 520 | )\r |
28a00297 | 521 | {\r |
522 | EFI_STATUS Status;\r | |
523 | \r | |
e94a9ff7 | 524 | if (Buffer == NULL) {\r |
28a00297 | 525 | return EFI_INVALID_PARAMETER;\r |
526 | }\r | |
527 | \r | |
f31c36c2 | 528 | CoreAcquireLock (&mPoolMemoryLock);\r |
925f0d1a | 529 | Status = CoreFreePoolI (Buffer, PoolType);\r |
f31c36c2 | 530 | CoreReleaseLock (&mPoolMemoryLock);\r |
28a00297 | 531 | return Status;\r |
532 | }\r | |
533 | \r | |
84edd20b SZ |
534 | /**\r |
535 | Frees pool.\r | |
536 | \r | |
537 | @param Buffer The allocated pool entry to free\r | |
538 | \r | |
539 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r | |
540 | @retval EFI_SUCCESS Pool successfully freed.\r | |
541 | \r | |
542 | **/\r | |
543 | EFI_STATUS\r | |
544 | EFIAPI\r | |
545 | CoreFreePool (\r | |
546 | IN VOID *Buffer\r | |
547 | )\r | |
548 | {\r | |
925f0d1a SZ |
549 | EFI_STATUS Status;\r |
550 | EFI_MEMORY_TYPE PoolType;\r | |
736a692e | 551 | \r |
925f0d1a | 552 | Status = CoreInternalFreePool (Buffer, &PoolType);\r |
736a692e | 553 | if (!EFI_ERROR (Status)) {\r |
1d60fe96 SZ |
554 | CoreUpdateProfile (\r |
555 | (EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0),\r | |
556 | MemoryProfileActionFreePool,\r | |
557 | PoolType,\r | |
558 | 0,\r | |
559 | Buffer,\r | |
560 | NULL\r | |
561 | );\r | |
74a88770 | 562 | InstallMemoryAttributesTableOnMemoryAllocation (PoolType);\r |
736a692e HT |
563 | }\r |
564 | return Status;\r | |
565 | }\r | |
28a00297 | 566 | \r |
7babb437 BD |
567 | /**\r |
568 | Internal function. Frees pool pages allocated via CoreAllocatePoolPagesI().\r | |
569 | \r | |
570 | @param PoolType The type of memory for the pool pages\r | |
571 | @param Memory The base address to free\r | |
572 | @param NoPages The number of pages to free\r | |
573 | \r | |
574 | **/\r | |
f31c36c2 AB |
575 | STATIC\r |
576 | VOID\r | |
577 | CoreFreePoolPagesI (\r | |
578 | IN EFI_MEMORY_TYPE PoolType,\r | |
579 | IN EFI_PHYSICAL_ADDRESS Memory,\r | |
580 | IN UINTN NoPages\r | |
581 | )\r | |
582 | {\r | |
583 | CoreAcquireMemoryLock ();\r | |
584 | CoreFreePoolPages (Memory, NoPages);\r | |
585 | CoreReleaseMemoryLock ();\r | |
7eb927db AB |
586 | \r |
587 | ApplyMemoryProtectionPolicy (PoolType, EfiConventionalMemory,\r | |
588 | (EFI_PHYSICAL_ADDRESS)(UINTN)Memory, EFI_PAGES_TO_SIZE (NoPages));\r | |
f31c36c2 AB |
589 | }\r |
590 | \r | |
162ed594 | 591 | /**\r |
28a00297 | 592 | Internal function to free a pool entry.\r |
28a00297 | 593 | Caller must have the memory lock held\r |
594 | \r | |
022c6d45 | 595 | @param Buffer The allocated pool entry to free\r |
925f0d1a | 596 | @param PoolType Pointer to pool type\r |
28a00297 | 597 | \r |
022c6d45 | 598 | @retval EFI_INVALID_PARAMETER Buffer not valid\r |
162ed594 | 599 | @retval EFI_SUCCESS Buffer successfully freed.\r |
28a00297 | 600 | \r |
162ed594 | 601 | **/\r |
602 | EFI_STATUS\r | |
603 | CoreFreePoolI (\r | |
925f0d1a SZ |
604 | IN VOID *Buffer,\r |
605 | OUT EFI_MEMORY_TYPE *PoolType OPTIONAL\r | |
162ed594 | 606 | )\r |
28a00297 | 607 | {\r |
608 | POOL *Pool;\r | |
609 | POOL_HEAD *Head;\r | |
610 | POOL_TAIL *Tail;\r | |
611 | POOL_FREE *Free;\r | |
612 | UINTN Index;\r | |
613 | UINTN NoPages;\r | |
614 | UINTN Size;\r | |
615 | CHAR8 *NewPage;\r | |
162ed594 | 616 | UINTN Offset;\r |
28a00297 | 617 | BOOLEAN AllFree;\r |
7970100c | 618 | UINTN Granularity;\r |
28a00297 | 619 | \r |
57b4ecb9 | 620 | ASSERT(Buffer != NULL);\r |
28a00297 | 621 | //\r |
622 | // Get the head & tail of the pool entry\r | |
623 | //\r | |
624 | Head = CR (Buffer, POOL_HEAD, Data, POOL_HEAD_SIGNATURE);\r | |
57b4ecb9 | 625 | ASSERT(Head != NULL);\r |
28a00297 | 626 | \r |
627 | if (Head->Signature != POOL_HEAD_SIGNATURE) {\r | |
628 | return EFI_INVALID_PARAMETER;\r | |
629 | }\r | |
630 | \r | |
631 | Tail = HEAD_TO_TAIL (Head);\r | |
57b4ecb9 | 632 | ASSERT(Tail != NULL);\r |
28a00297 | 633 | \r |
634 | //\r | |
635 | // Debug\r | |
636 | //\r | |
637 | ASSERT (Tail->Signature == POOL_TAIL_SIGNATURE);\r | |
638 | ASSERT (Head->Size == Tail->Size);\r | |
f31c36c2 | 639 | ASSERT_LOCKED (&mPoolMemoryLock);\r |
28a00297 | 640 | \r |
641 | if (Tail->Signature != POOL_TAIL_SIGNATURE) {\r | |
642 | return EFI_INVALID_PARAMETER;\r | |
643 | }\r | |
644 | \r | |
645 | if (Head->Size != Tail->Size) {\r | |
646 | return EFI_INVALID_PARAMETER;\r | |
647 | }\r | |
648 | \r | |
649 | //\r | |
650 | // Determine the pool type and account for it\r | |
651 | //\r | |
652 | Size = Head->Size;\r | |
653 | Pool = LookupPoolHead (Head->Type);\r | |
654 | if (Pool == NULL) {\r | |
655 | return EFI_INVALID_PARAMETER;\r | |
656 | }\r | |
657 | Pool->Used -= Size;\r | |
57b4ecb9 | 658 | DEBUG ((DEBUG_POOL, "FreePool: %p (len %lx) %,ld\n", Head->Data, (UINT64)(Head->Size - POOL_OVERHEAD), (UINT64) Pool->Used));\r |
28a00297 | 659 | \r |
7970100c AB |
660 | if (Head->Type == EfiACPIReclaimMemory ||\r |
661 | Head->Type == EfiACPIMemoryNVS ||\r | |
662 | Head->Type == EfiRuntimeServicesCode ||\r | |
663 | Head->Type == EfiRuntimeServicesData) {\r | |
664 | \r | |
d4731a98 | 665 | Granularity = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r |
7970100c | 666 | } else {\r |
d4731a98 | 667 | Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r |
7970100c AB |
668 | }\r |
669 | \r | |
925f0d1a SZ |
670 | if (PoolType != NULL) {\r |
671 | *PoolType = Head->Type;\r | |
672 | }\r | |
673 | \r | |
28a00297 | 674 | //\r |
022c6d45 | 675 | // Determine the pool list\r |
28a00297 | 676 | //\r |
677 | Index = SIZE_TO_LIST(Size);\r | |
678 | DEBUG_CLEAR_MEMORY (Head, Size);\r | |
679 | \r | |
680 | //\r | |
681 | // If it's not on the list, it must be pool pages\r | |
682 | //\r | |
f2c7daf6 | 683 | if (Index >= SIZE_TO_LIST (Granularity)) {\r |
28a00297 | 684 | \r |
685 | //\r | |
686 | // Return the memory pages back to free memory\r | |
687 | //\r | |
7970100c AB |
688 | NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (Granularity) - 1;\r |
689 | NoPages &= ~(UINTN)(EFI_SIZE_TO_PAGES (Granularity) - 1);\r | |
f31c36c2 | 690 | CoreFreePoolPagesI (Pool->MemoryType, (EFI_PHYSICAL_ADDRESS) (UINTN) Head, NoPages);\r |
28a00297 | 691 | \r |
692 | } else {\r | |
693 | \r | |
694 | //\r | |
695 | // Put the pool entry onto the free pool list\r | |
696 | //\r | |
697 | Free = (POOL_FREE *) Head;\r | |
57b4ecb9 | 698 | ASSERT(Free != NULL);\r |
28a00297 | 699 | Free->Signature = POOL_FREE_SIGNATURE;\r |
700 | Free->Index = (UINT32)Index;\r | |
701 | InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r | |
702 | \r | |
703 | //\r | |
022c6d45 | 704 | // See if all the pool entries in the same page as Free are freed pool\r |
28a00297 | 705 | // entries\r |
706 | //\r | |
7970100c | 707 | NewPage = (CHAR8 *)((UINTN)Free & ~(Granularity - 1));\r |
28a00297 | 708 | Free = (POOL_FREE *) &NewPage[0];\r |
e94a9ff7 | 709 | ASSERT(Free != NULL);\r |
28a00297 | 710 | \r |
711 | if (Free->Signature == POOL_FREE_SIGNATURE) {\r | |
712 | \r | |
28a00297 | 713 | AllFree = TRUE;\r |
162ed594 | 714 | Offset = 0;\r |
022c6d45 | 715 | \r |
7970100c | 716 | while ((Offset < Granularity) && (AllFree)) {\r |
7e8e2205 AB |
717 | Free = (POOL_FREE *) &NewPage[Offset];\r |
718 | ASSERT(Free != NULL);\r | |
719 | if (Free->Signature != POOL_FREE_SIGNATURE) {\r | |
720 | AllFree = FALSE;\r | |
28a00297 | 721 | }\r |
7e8e2205 | 722 | Offset += LIST_TO_SIZE(Free->Index);\r |
28a00297 | 723 | }\r |
724 | \r | |
725 | if (AllFree) {\r | |
726 | \r | |
727 | //\r | |
022c6d45 | 728 | // All of the pool entries in the same page as Free are free pool\r |
28a00297 | 729 | // entries\r |
730 | // Remove all of these pool entries from the free loop lists.\r | |
731 | //\r | |
732 | Free = (POOL_FREE *) &NewPage[0];\r | |
57b4ecb9 | 733 | ASSERT(Free != NULL);\r |
162ed594 | 734 | Offset = 0;\r |
022c6d45 | 735 | \r |
7970100c | 736 | while (Offset < Granularity) {\r |
7e8e2205 AB |
737 | Free = (POOL_FREE *) &NewPage[Offset];\r |
738 | ASSERT(Free != NULL);\r | |
739 | RemoveEntryList (&Free->Link);\r | |
740 | Offset += LIST_TO_SIZE(Free->Index);\r | |
28a00297 | 741 | }\r |
742 | \r | |
743 | //\r | |
744 | // Free the page\r | |
745 | //\r | |
f31c36c2 AB |
746 | CoreFreePoolPagesI (Pool->MemoryType, (EFI_PHYSICAL_ADDRESS) (UINTN)NewPage,\r |
747 | EFI_SIZE_TO_PAGES (Granularity));\r | |
28a00297 | 748 | }\r |
749 | }\r | |
750 | }\r | |
751 | \r | |
752 | //\r | |
09159a29 | 753 | // If this is an OS/OEM specific memory type, then check to see if the last\r |
28a00297 | 754 | // portion of that memory type has been freed. If it has, then free the\r |
755 | // list entry for that memory type\r | |
756 | //\r | |
09159a29 | 757 | if (((UINT32) Pool->MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) && Pool->Used == 0) {\r |
28a00297 | 758 | RemoveEntryList (&Pool->Link);\r |
925f0d1a | 759 | CoreFreePoolI (Pool, NULL);\r |
28a00297 | 760 | }\r |
761 | \r | |
762 | return EFI_SUCCESS;\r | |
763 | }\r | |
84edd20b | 764 | \r |