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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
73459f73 | 3 | * Module Name: utalloc - local memory allocation routines |
1da177e4 LT |
4 | * |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
6c9deb72 | 8 | * Copyright (C) 2000 - 2007, R. Byron Moore |
1da177e4 LT |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
1da177e4 | 44 | #include <acpi/acpi.h> |
d41eb99b | 45 | #include <acpi/acdebug.h> |
1da177e4 LT |
46 | |
47 | #define _COMPONENT ACPI_UTILITIES | |
4be44fcd | 48 | ACPI_MODULE_NAME("utalloc") |
1da177e4 | 49 | |
44f6c012 | 50 | /******************************************************************************* |
1da177e4 | 51 | * |
73459f73 | 52 | * FUNCTION: acpi_ut_create_caches |
1da177e4 | 53 | * |
73459f73 | 54 | * PARAMETERS: None |
1da177e4 | 55 | * |
73459f73 | 56 | * RETURN: Status |
1da177e4 | 57 | * |
73459f73 | 58 | * DESCRIPTION: Create all local caches |
1da177e4 LT |
59 | * |
60 | ******************************************************************************/ | |
4be44fcd | 61 | acpi_status acpi_ut_create_caches(void) |
1da177e4 | 62 | { |
4be44fcd | 63 | acpi_status status; |
1da177e4 | 64 | |
73459f73 | 65 | /* Object Caches, for frequently used objects */ |
1da177e4 | 66 | |
4be44fcd | 67 | status = |
61686124 BM |
68 | acpi_os_create_cache("Acpi-Namespace", |
69 | sizeof(struct acpi_namespace_node), | |
70 | ACPI_MAX_NAMESPACE_CACHE_DEPTH, | |
71 | &acpi_gbl_namespace_cache); | |
72 | if (ACPI_FAILURE(status)) { | |
73 | return (status); | |
74 | } | |
75 | ||
76 | status = | |
77 | acpi_os_create_cache("Acpi-State", sizeof(union acpi_generic_state), | |
4be44fcd LB |
78 | ACPI_MAX_STATE_CACHE_DEPTH, |
79 | &acpi_gbl_state_cache); | |
80 | if (ACPI_FAILURE(status)) { | |
73459f73 | 81 | return (status); |
1da177e4 LT |
82 | } |
83 | ||
4be44fcd | 84 | status = |
61686124 | 85 | acpi_os_create_cache("Acpi-Parse", |
4be44fcd LB |
86 | sizeof(struct acpi_parse_obj_common), |
87 | ACPI_MAX_PARSE_CACHE_DEPTH, | |
88 | &acpi_gbl_ps_node_cache); | |
89 | if (ACPI_FAILURE(status)) { | |
73459f73 | 90 | return (status); |
1da177e4 LT |
91 | } |
92 | ||
4be44fcd | 93 | status = |
b229cf92 | 94 | acpi_os_create_cache("Acpi-ParseExt", |
4be44fcd LB |
95 | sizeof(struct acpi_parse_obj_named), |
96 | ACPI_MAX_EXTPARSE_CACHE_DEPTH, | |
97 | &acpi_gbl_ps_node_ext_cache); | |
98 | if (ACPI_FAILURE(status)) { | |
73459f73 RM |
99 | return (status); |
100 | } | |
1da177e4 | 101 | |
4be44fcd | 102 | status = |
61686124 | 103 | acpi_os_create_cache("Acpi-Operand", |
4be44fcd LB |
104 | sizeof(union acpi_operand_object), |
105 | ACPI_MAX_OBJECT_CACHE_DEPTH, | |
106 | &acpi_gbl_operand_cache); | |
107 | if (ACPI_FAILURE(status)) { | |
73459f73 RM |
108 | return (status); |
109 | } | |
4119532c BM |
110 | #ifdef ACPI_DBG_TRACK_ALLOCATIONS |
111 | ||
112 | /* Memory allocation lists */ | |
113 | ||
114 | status = acpi_ut_create_list("Acpi-Global", 0, &acpi_gbl_global_list); | |
115 | if (ACPI_FAILURE(status)) { | |
116 | return (status); | |
117 | } | |
118 | ||
119 | status = | |
120 | acpi_ut_create_list("Acpi-Namespace", | |
121 | sizeof(struct acpi_namespace_node), | |
122 | &acpi_gbl_ns_node_list); | |
123 | if (ACPI_FAILURE(status)) { | |
124 | return (status); | |
125 | } | |
126 | #endif | |
127 | ||
73459f73 | 128 | return (AE_OK); |
1da177e4 LT |
129 | } |
130 | ||
44f6c012 | 131 | /******************************************************************************* |
1da177e4 | 132 | * |
73459f73 | 133 | * FUNCTION: acpi_ut_delete_caches |
1da177e4 | 134 | * |
73459f73 | 135 | * PARAMETERS: None |
1da177e4 | 136 | * |
73459f73 | 137 | * RETURN: Status |
1da177e4 | 138 | * |
73459f73 | 139 | * DESCRIPTION: Purge and delete all local caches |
1da177e4 LT |
140 | * |
141 | ******************************************************************************/ | |
142 | ||
4be44fcd | 143 | acpi_status acpi_ut_delete_caches(void) |
1da177e4 | 144 | { |
d41eb99b BM |
145 | #ifdef ACPI_DBG_TRACK_ALLOCATIONS |
146 | char buffer[7]; | |
147 | ||
148 | if (acpi_gbl_display_final_mem_stats) { | |
149 | ACPI_STRCPY(buffer, "MEMORY"); | |
150 | acpi_db_display_statistics(buffer); | |
151 | } | |
152 | #endif | |
1da177e4 | 153 | |
61686124 BM |
154 | (void)acpi_os_delete_cache(acpi_gbl_namespace_cache); |
155 | acpi_gbl_namespace_cache = NULL; | |
156 | ||
4be44fcd | 157 | (void)acpi_os_delete_cache(acpi_gbl_state_cache); |
73459f73 | 158 | acpi_gbl_state_cache = NULL; |
1da177e4 | 159 | |
4be44fcd | 160 | (void)acpi_os_delete_cache(acpi_gbl_operand_cache); |
73459f73 | 161 | acpi_gbl_operand_cache = NULL; |
1da177e4 | 162 | |
4be44fcd | 163 | (void)acpi_os_delete_cache(acpi_gbl_ps_node_cache); |
73459f73 | 164 | acpi_gbl_ps_node_cache = NULL; |
1da177e4 | 165 | |
4be44fcd | 166 | (void)acpi_os_delete_cache(acpi_gbl_ps_node_ext_cache); |
73459f73 | 167 | acpi_gbl_ps_node_ext_cache = NULL; |
1da177e4 | 168 | |
4119532c BM |
169 | #ifdef ACPI_DBG_TRACK_ALLOCATIONS |
170 | ||
171 | /* Debug only - display leftover memory allocation, if any */ | |
172 | ||
173 | acpi_ut_dump_allocations(ACPI_UINT32_MAX, NULL); | |
174 | ||
175 | /* Free memory lists */ | |
176 | ||
02438d87 | 177 | ACPI_FREE(acpi_gbl_global_list); |
4119532c BM |
178 | acpi_gbl_global_list = NULL; |
179 | ||
02438d87 | 180 | ACPI_FREE(acpi_gbl_ns_node_list); |
4119532c BM |
181 | acpi_gbl_ns_node_list = NULL; |
182 | #endif | |
183 | ||
73459f73 | 184 | return (AE_OK); |
1da177e4 | 185 | } |
1da177e4 LT |
186 | |
187 | /******************************************************************************* | |
188 | * | |
189 | * FUNCTION: acpi_ut_validate_buffer | |
190 | * | |
191 | * PARAMETERS: Buffer - Buffer descriptor to be validated | |
192 | * | |
193 | * RETURN: Status | |
194 | * | |
195 | * DESCRIPTION: Perform parameter validation checks on an struct acpi_buffer | |
196 | * | |
197 | ******************************************************************************/ | |
198 | ||
4be44fcd | 199 | acpi_status acpi_ut_validate_buffer(struct acpi_buffer * buffer) |
1da177e4 LT |
200 | { |
201 | ||
202 | /* Obviously, the structure pointer must be valid */ | |
203 | ||
204 | if (!buffer) { | |
205 | return (AE_BAD_PARAMETER); | |
206 | } | |
207 | ||
208 | /* Special semantics for the length */ | |
209 | ||
4be44fcd LB |
210 | if ((buffer->length == ACPI_NO_BUFFER) || |
211 | (buffer->length == ACPI_ALLOCATE_BUFFER) || | |
212 | (buffer->length == ACPI_ALLOCATE_LOCAL_BUFFER)) { | |
1da177e4 LT |
213 | return (AE_OK); |
214 | } | |
215 | ||
216 | /* Length is valid, the buffer pointer must be also */ | |
217 | ||
218 | if (!buffer->pointer) { | |
219 | return (AE_BAD_PARAMETER); | |
220 | } | |
221 | ||
222 | return (AE_OK); | |
223 | } | |
224 | ||
1da177e4 LT |
225 | /******************************************************************************* |
226 | * | |
227 | * FUNCTION: acpi_ut_initialize_buffer | |
228 | * | |
229 | * PARAMETERS: Buffer - Buffer to be validated | |
230 | * required_length - Length needed | |
231 | * | |
232 | * RETURN: Status | |
233 | * | |
234 | * DESCRIPTION: Validate that the buffer is of the required length or | |
235 | * allocate a new buffer. Returned buffer is always zeroed. | |
236 | * | |
237 | ******************************************************************************/ | |
238 | ||
239 | acpi_status | |
4be44fcd LB |
240 | acpi_ut_initialize_buffer(struct acpi_buffer * buffer, |
241 | acpi_size required_length) | |
1da177e4 | 242 | { |
4be44fcd | 243 | acpi_status status = AE_OK; |
1da177e4 LT |
244 | |
245 | switch (buffer->length) { | |
246 | case ACPI_NO_BUFFER: | |
247 | ||
248 | /* Set the exception and returned the required length */ | |
249 | ||
250 | status = AE_BUFFER_OVERFLOW; | |
251 | break; | |
252 | ||
1da177e4 LT |
253 | case ACPI_ALLOCATE_BUFFER: |
254 | ||
255 | /* Allocate a new buffer */ | |
256 | ||
4be44fcd | 257 | buffer->pointer = acpi_os_allocate(required_length); |
1da177e4 LT |
258 | if (!buffer->pointer) { |
259 | return (AE_NO_MEMORY); | |
260 | } | |
261 | ||
262 | /* Clear the buffer */ | |
263 | ||
4be44fcd | 264 | ACPI_MEMSET(buffer->pointer, 0, required_length); |
1da177e4 LT |
265 | break; |
266 | ||
1da177e4 LT |
267 | case ACPI_ALLOCATE_LOCAL_BUFFER: |
268 | ||
269 | /* Allocate a new buffer with local interface to allow tracking */ | |
270 | ||
8313524a | 271 | buffer->pointer = ACPI_ALLOCATE_ZEROED(required_length); |
1da177e4 LT |
272 | if (!buffer->pointer) { |
273 | return (AE_NO_MEMORY); | |
274 | } | |
275 | break; | |
276 | ||
1da177e4 LT |
277 | default: |
278 | ||
279 | /* Existing buffer: Validate the size of the buffer */ | |
280 | ||
281 | if (buffer->length < required_length) { | |
282 | status = AE_BUFFER_OVERFLOW; | |
283 | break; | |
284 | } | |
285 | ||
286 | /* Clear the buffer */ | |
287 | ||
4be44fcd | 288 | ACPI_MEMSET(buffer->pointer, 0, required_length); |
1da177e4 LT |
289 | break; |
290 | } | |
291 | ||
292 | buffer->length = required_length; | |
293 | return (status); | |
294 | } | |
295 | ||
e21c1ca3 | 296 | #ifdef NOT_USED_BY_LINUX |
1da177e4 LT |
297 | /******************************************************************************* |
298 | * | |
299 | * FUNCTION: acpi_ut_allocate | |
300 | * | |
301 | * PARAMETERS: Size - Size of the allocation | |
302 | * Component - Component type of caller | |
303 | * Module - Source file name of caller | |
304 | * Line - Line number of caller | |
305 | * | |
306 | * RETURN: Address of the allocated memory on success, NULL on failure. | |
307 | * | |
61686124 | 308 | * DESCRIPTION: Subsystem equivalent of malloc. |
1da177e4 LT |
309 | * |
310 | ******************************************************************************/ | |
311 | ||
4be44fcd | 312 | void *acpi_ut_allocate(acpi_size size, u32 component, char *module, u32 line) |
1da177e4 | 313 | { |
4be44fcd | 314 | void *allocation; |
1da177e4 | 315 | |
b229cf92 | 316 | ACPI_FUNCTION_TRACE_U32(ut_allocate, size); |
1da177e4 LT |
317 | |
318 | /* Check for an inadvertent size of zero bytes */ | |
319 | ||
320 | if (!size) { | |
61686124 BM |
321 | ACPI_WARNING((module, line, |
322 | "Attempt to allocate zero bytes, allocating 1 byte")); | |
1da177e4 LT |
323 | size = 1; |
324 | } | |
325 | ||
4be44fcd | 326 | allocation = acpi_os_allocate(size); |
1da177e4 | 327 | if (!allocation) { |
52fc0b02 | 328 | |
1da177e4 LT |
329 | /* Report allocation error */ |
330 | ||
61686124 BM |
331 | ACPI_WARNING((module, line, |
332 | "Could not allocate size %X", (u32) size)); | |
1da177e4 | 333 | |
4be44fcd | 334 | return_PTR(NULL); |
1da177e4 LT |
335 | } |
336 | ||
4be44fcd | 337 | return_PTR(allocation); |
1da177e4 LT |
338 | } |
339 | ||
1da177e4 LT |
340 | /******************************************************************************* |
341 | * | |
61686124 | 342 | * FUNCTION: acpi_ut_allocate_zeroed |
1da177e4 LT |
343 | * |
344 | * PARAMETERS: Size - Size of the allocation | |
345 | * Component - Component type of caller | |
346 | * Module - Source file name of caller | |
347 | * Line - Line number of caller | |
348 | * | |
349 | * RETURN: Address of the allocated memory on success, NULL on failure. | |
350 | * | |
61686124 | 351 | * DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory. |
1da177e4 LT |
352 | * |
353 | ******************************************************************************/ | |
354 | ||
61686124 BM |
355 | void *acpi_ut_allocate_zeroed(acpi_size size, |
356 | u32 component, char *module, u32 line) | |
1da177e4 | 357 | { |
4be44fcd | 358 | void *allocation; |
1da177e4 | 359 | |
4be44fcd | 360 | ACPI_FUNCTION_ENTRY(); |
1da177e4 | 361 | |
61686124 BM |
362 | allocation = acpi_ut_allocate(size, component, module, line); |
363 | if (allocation) { | |
1da177e4 | 364 | |
61686124 | 365 | /* Clear the memory block */ |
1da177e4 | 366 | |
61686124 | 367 | ACPI_MEMSET(allocation, 0, size); |
1da177e4 LT |
368 | } |
369 | ||
61686124 | 370 | return (allocation); |
1da177e4 | 371 | } |
e21c1ca3 | 372 | #endif |