Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 3 | * Module Name: utalloc - local memory allocation routines |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 6c9deb7 | 2007-02-02 19:48:24 +0300 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2007, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
Bob Moore | d41eb99 | 2007-02-02 19:48:23 +0300 | [diff] [blame] | 45 | #include <acpi/acdebug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | #define _COMPONENT ACPI_UTILITIES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 48 | ACPI_MODULE_NAME("utalloc") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 50 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 52 | * FUNCTION: acpi_ut_create_caches |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 54 | * PARAMETERS: None |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 56 | * RETURN: Status |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 58 | * DESCRIPTION: Create all local caches |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | * |
| 60 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 61 | acpi_status acpi_ut_create_caches(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 63 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 65 | /* Object Caches, for frequently used objects */ |
| 66 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 67 | status = |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 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), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 78 | ACPI_MAX_STATE_CACHE_DEPTH, |
| 79 | &acpi_gbl_state_cache); |
| 80 | if (ACPI_FAILURE(status)) { |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 81 | return (status); |
| 82 | } |
| 83 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 84 | status = |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 85 | acpi_os_create_cache("Acpi-Parse", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 86 | sizeof(struct acpi_parse_obj_common), |
| 87 | ACPI_MAX_PARSE_CACHE_DEPTH, |
| 88 | &acpi_gbl_ps_node_cache); |
| 89 | if (ACPI_FAILURE(status)) { |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 90 | return (status); |
| 91 | } |
| 92 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 93 | status = |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 94 | acpi_os_create_cache("Acpi-ParseExt", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 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)) { |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 99 | return (status); |
| 100 | } |
| 101 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 102 | status = |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 103 | acpi_os_create_cache("Acpi-Operand", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 104 | sizeof(union acpi_operand_object), |
| 105 | ACPI_MAX_OBJECT_CACHE_DEPTH, |
| 106 | &acpi_gbl_operand_cache); |
| 107 | if (ACPI_FAILURE(status)) { |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 108 | return (status); |
| 109 | } |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 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 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 128 | return (AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | } |
| 130 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 131 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 133 | * FUNCTION: acpi_ut_delete_caches |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 135 | * PARAMETERS: None |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 137 | * RETURN: Status |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | * |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 139 | * DESCRIPTION: Purge and delete all local caches |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | * |
| 141 | ******************************************************************************/ |
| 142 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 143 | acpi_status acpi_ut_delete_caches(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | { |
Bob Moore | d41eb99 | 2007-02-02 19:48:23 +0300 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 154 | (void)acpi_os_delete_cache(acpi_gbl_namespace_cache); |
| 155 | acpi_gbl_namespace_cache = NULL; |
| 156 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 157 | (void)acpi_os_delete_cache(acpi_gbl_state_cache); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 158 | acpi_gbl_state_cache = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 160 | (void)acpi_os_delete_cache(acpi_gbl_operand_cache); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 161 | acpi_gbl_operand_cache = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 163 | (void)acpi_os_delete_cache(acpi_gbl_ps_node_cache); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 164 | acpi_gbl_ps_node_cache = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 166 | (void)acpi_os_delete_cache(acpi_gbl_ps_node_ext_cache); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 167 | acpi_gbl_ps_node_ext_cache = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 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 | |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 177 | ACPI_FREE(acpi_gbl_global_list); |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 178 | acpi_gbl_global_list = NULL; |
| 179 | |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 180 | ACPI_FREE(acpi_gbl_ns_node_list); |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 181 | acpi_gbl_ns_node_list = NULL; |
| 182 | #endif |
| 183 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 184 | return (AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 199 | acpi_status acpi_ut_validate_buffer(struct acpi_buffer * buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 210 | if ((buffer->length == ACPI_NO_BUFFER) || |
| 211 | (buffer->length == ACPI_ALLOCATE_BUFFER) || |
| 212 | (buffer->length == ACPI_ALLOCATE_LOCAL_BUFFER)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 240 | acpi_ut_initialize_buffer(struct acpi_buffer * buffer, |
| 241 | acpi_size required_length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 243 | acpi_status status = AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | case ACPI_ALLOCATE_BUFFER: |
| 254 | |
| 255 | /* Allocate a new buffer */ |
| 256 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 257 | buffer->pointer = acpi_os_allocate(required_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | if (!buffer->pointer) { |
| 259 | return (AE_NO_MEMORY); |
| 260 | } |
| 261 | |
| 262 | /* Clear the buffer */ |
| 263 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 264 | ACPI_MEMSET(buffer->pointer, 0, required_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | break; |
| 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | case ACPI_ALLOCATE_LOCAL_BUFFER: |
| 268 | |
| 269 | /* Allocate a new buffer with local interface to allow tracking */ |
| 270 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 271 | buffer->pointer = ACPI_ALLOCATE_ZEROED(required_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | if (!buffer->pointer) { |
| 273 | return (AE_NO_MEMORY); |
| 274 | } |
| 275 | break; |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 288 | ACPI_MEMSET(buffer->pointer, 0, required_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | break; |
| 290 | } |
| 291 | |
| 292 | buffer->length = required_length; |
| 293 | return (status); |
| 294 | } |
| 295 | |
Len Brown | e21c1ca | 2006-07-10 01:35:51 -0400 | [diff] [blame] | 296 | #ifdef NOT_USED_BY_LINUX |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 308 | * DESCRIPTION: Subsystem equivalent of malloc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | * |
| 310 | ******************************************************************************/ |
| 311 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 312 | void *acpi_ut_allocate(acpi_size size, u32 component, char *module, u32 line) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 314 | void *allocation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 316 | ACPI_FUNCTION_TRACE_U32(ut_allocate, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | /* Check for an inadvertent size of zero bytes */ |
| 319 | |
| 320 | if (!size) { |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 321 | ACPI_WARNING((module, line, |
| 322 | "Attempt to allocate zero bytes, allocating 1 byte")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | size = 1; |
| 324 | } |
| 325 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 326 | allocation = acpi_os_allocate(size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | if (!allocation) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | /* Report allocation error */ |
| 330 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 331 | ACPI_WARNING((module, line, |
| 332 | "Could not allocate size %X", (u32) size)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 334 | return_PTR(NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
| 336 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 337 | return_PTR(allocation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | /******************************************************************************* |
| 341 | * |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 342 | * FUNCTION: acpi_ut_allocate_zeroed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 351 | * DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | * |
| 353 | ******************************************************************************/ |
| 354 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 355 | void *acpi_ut_allocate_zeroed(acpi_size size, |
| 356 | u32 component, char *module, u32 line) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 358 | void *allocation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 360 | ACPI_FUNCTION_ENTRY(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 362 | allocation = acpi_ut_allocate(size, component, module, line); |
| 363 | if (allocation) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 365 | /* Clear the memory block */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 367 | ACPI_MEMSET(allocation, 0, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | } |
| 369 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 370 | return (allocation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
Len Brown | e21c1ca | 2006-07-10 01:35:51 -0400 | [diff] [blame] | 372 | #endif |