1 /****************************************************************************** 2 * 3 * Module Name: utalloc - local memory allocation routines 4 * $Revision: 1.166 $ 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __UTALLOC_C__ 118 119 #include "acpi.h" 120 #include "acdebug.h" 121 122 #define _COMPONENT ACPI_UTILITIES 123 ACPI_MODULE_NAME ("utalloc") 124 125 126 /******************************************************************************* 127 * 128 * FUNCTION: AcpiUtCreateCaches 129 * 130 * PARAMETERS: None 131 * 132 * RETURN: Status 133 * 134 * DESCRIPTION: Create all local caches 135 * 136 ******************************************************************************/ 137 138 ACPI_STATUS 139 AcpiUtCreateCaches ( 140 void) 141 { 142 ACPI_STATUS Status; 143 144 145 /* Object Caches, for frequently used objects */ 146 147 Status = AcpiOsCreateCache ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE), 148 ACPI_MAX_NAMESPACE_CACHE_DEPTH, &AcpiGbl_NamespaceCache); 149 if (ACPI_FAILURE (Status)) 150 { 151 return (Status); 152 } 153 154 Status = AcpiOsCreateCache ("Acpi-State", sizeof (ACPI_GENERIC_STATE), 155 ACPI_MAX_STATE_CACHE_DEPTH, &AcpiGbl_StateCache); 156 if (ACPI_FAILURE (Status)) 157 { 158 return (Status); 159 } 160 161 Status = AcpiOsCreateCache ("Acpi-Parse", sizeof (ACPI_PARSE_OBJ_COMMON), 162 ACPI_MAX_PARSE_CACHE_DEPTH, &AcpiGbl_PsNodeCache); 163 if (ACPI_FAILURE (Status)) 164 { 165 return (Status); 166 } 167 168 Status = AcpiOsCreateCache ("Acpi-ParseExt", sizeof (ACPI_PARSE_OBJ_NAMED), 169 ACPI_MAX_EXTPARSE_CACHE_DEPTH, &AcpiGbl_PsNodeExtCache); 170 if (ACPI_FAILURE (Status)) 171 { 172 return (Status); 173 } 174 175 Status = AcpiOsCreateCache ("Acpi-Operand", sizeof (ACPI_OPERAND_OBJECT), 176 ACPI_MAX_OBJECT_CACHE_DEPTH, &AcpiGbl_OperandCache); 177 if (ACPI_FAILURE (Status)) 178 { 179 return (Status); 180 } 181 182 183 #ifdef ACPI_DBG_TRACK_ALLOCATIONS 184 185 /* Memory allocation lists */ 186 187 Status = AcpiUtCreateList ("Acpi-Global", 0, 188 &AcpiGbl_GlobalList); 189 if (ACPI_FAILURE (Status)) 190 { 191 return (Status); 192 } 193 194 Status = AcpiUtCreateList ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE), 195 &AcpiGbl_NsNodeList); 196 if (ACPI_FAILURE (Status)) 197 { 198 return (Status); 199 } 200 #endif 201 202 return (AE_OK); 203 } 204 205 206 /******************************************************************************* 207 * 208 * FUNCTION: AcpiUtDeleteCaches 209 * 210 * PARAMETERS: None 211 * 212 * RETURN: Status 213 * 214 * DESCRIPTION: Purge and delete all local caches 215 * 216 ******************************************************************************/ 217 218 ACPI_STATUS 219 AcpiUtDeleteCaches ( 220 void) 221 { 222 #ifdef ACPI_DBG_TRACK_ALLOCATIONS 223 char Buffer[7]; 224 225 if (AcpiGbl_DisplayFinalMemStats) 226 { 227 ACPI_STRCPY (Buffer, "MEMORY"); 228 (void) AcpiDbDisplayStatistics (Buffer); 229 } 230 #endif 231 232 (void) AcpiOsDeleteCache (AcpiGbl_NamespaceCache); 233 AcpiGbl_NamespaceCache = NULL; 234 235 (void) AcpiOsDeleteCache (AcpiGbl_StateCache); 236 AcpiGbl_StateCache = NULL; 237 238 (void) AcpiOsDeleteCache (AcpiGbl_OperandCache); 239 AcpiGbl_OperandCache = NULL; 240 241 (void) AcpiOsDeleteCache (AcpiGbl_PsNodeCache); 242 AcpiGbl_PsNodeCache = NULL; 243 244 (void) AcpiOsDeleteCache (AcpiGbl_PsNodeExtCache); 245 AcpiGbl_PsNodeExtCache = NULL; 246 247 248 #ifdef ACPI_DBG_TRACK_ALLOCATIONS 249 250 /* Debug only - display leftover memory allocation, if any */ 251 252 AcpiUtDumpAllocations (ACPI_UINT32_MAX, NULL); 253 254 /* Free memory lists */ 255 256 AcpiOsFree (AcpiGbl_GlobalList); 257 AcpiGbl_GlobalList = NULL; 258 259 AcpiOsFree (AcpiGbl_NsNodeList); 260 AcpiGbl_NsNodeList = NULL; 261 #endif 262 263 return (AE_OK); 264 } 265 266 267 /******************************************************************************* 268 * 269 * FUNCTION: AcpiUtValidateBuffer 270 * 271 * PARAMETERS: Buffer - Buffer descriptor to be validated 272 * 273 * RETURN: Status 274 * 275 * DESCRIPTION: Perform parameter validation checks on an ACPI_BUFFER 276 * 277 ******************************************************************************/ 278 279 ACPI_STATUS 280 AcpiUtValidateBuffer ( 281 ACPI_BUFFER *Buffer) 282 { 283 284 /* Obviously, the structure pointer must be valid */ 285 286 if (!Buffer) 287 { 288 return (AE_BAD_PARAMETER); 289 } 290 291 /* Special semantics for the length */ 292 293 if ((Buffer->Length == ACPI_NO_BUFFER) || 294 (Buffer->Length == ACPI_ALLOCATE_BUFFER) || 295 (Buffer->Length == ACPI_ALLOCATE_LOCAL_BUFFER)) 296 { 297 return (AE_OK); 298 } 299 300 /* Length is valid, the buffer pointer must be also */ 301 302 if (!Buffer->Pointer) 303 { 304 return (AE_BAD_PARAMETER); 305 } 306 307 return (AE_OK); 308 } 309 310 311 /******************************************************************************* 312 * 313 * FUNCTION: AcpiUtInitializeBuffer 314 * 315 * PARAMETERS: Buffer - Buffer to be validated 316 * RequiredLength - Length needed 317 * 318 * RETURN: Status 319 * 320 * DESCRIPTION: Validate that the buffer is of the required length or 321 * allocate a new buffer. Returned buffer is always zeroed. 322 * 323 ******************************************************************************/ 324 325 ACPI_STATUS 326 AcpiUtInitializeBuffer ( 327 ACPI_BUFFER *Buffer, 328 ACPI_SIZE RequiredLength) 329 { 330 ACPI_STATUS Status = AE_OK; 331 332 333 /* Parameter validation */ 334 335 if (!Buffer || !RequiredLength) 336 { 337 return (AE_BAD_PARAMETER); 338 } 339 340 switch (Buffer->Length) 341 { 342 case ACPI_NO_BUFFER: 343 344 /* Set the exception and returned the required length */ 345 346 Status = AE_BUFFER_OVERFLOW; 347 break; 348 349 350 case ACPI_ALLOCATE_BUFFER: 351 352 /* Allocate a new buffer */ 353 354 Buffer->Pointer = AcpiOsAllocate (RequiredLength); 355 if (!Buffer->Pointer) 356 { 357 return (AE_NO_MEMORY); 358 } 359 360 /* Clear the buffer */ 361 362 ACPI_MEMSET (Buffer->Pointer, 0, RequiredLength); 363 break; 364 365 366 case ACPI_ALLOCATE_LOCAL_BUFFER: 367 368 /* Allocate a new buffer with local interface to allow tracking */ 369 370 Buffer->Pointer = ACPI_ALLOCATE_ZEROED (RequiredLength); 371 if (!Buffer->Pointer) 372 { 373 return (AE_NO_MEMORY); 374 } 375 break; 376 377 378 default: 379 380 /* Existing buffer: Validate the size of the buffer */ 381 382 if (Buffer->Length < RequiredLength) 383 { 384 Status = AE_BUFFER_OVERFLOW; 385 break; 386 } 387 388 /* Clear the buffer */ 389 390 ACPI_MEMSET (Buffer->Pointer, 0, RequiredLength); 391 break; 392 } 393 394 Buffer->Length = RequiredLength; 395 return (Status); 396 } 397 398 399 /******************************************************************************* 400 * 401 * FUNCTION: AcpiUtAllocate 402 * 403 * PARAMETERS: Size - Size of the allocation 404 * Component - Component type of caller 405 * Module - Source file name of caller 406 * Line - Line number of caller 407 * 408 * RETURN: Address of the allocated memory on success, NULL on failure. 409 * 410 * DESCRIPTION: Subsystem equivalent of malloc. 411 * 412 ******************************************************************************/ 413 414 void * 415 AcpiUtAllocate ( 416 ACPI_SIZE Size, 417 UINT32 Component, 418 const char *Module, 419 UINT32 Line) 420 { 421 void *Allocation; 422 423 424 ACPI_FUNCTION_TRACE_U32 (UtAllocate, Size); 425 426 427 /* Check for an inadvertent size of zero bytes */ 428 429 if (!Size) 430 { 431 ACPI_WARNING ((Module, Line, 432 "Attempt to allocate zero bytes, allocating 1 byte")); 433 Size = 1; 434 } 435 436 Allocation = AcpiOsAllocate (Size); 437 if (!Allocation) 438 { 439 /* Report allocation error */ 440 441 ACPI_WARNING ((Module, Line, 442 "Could not allocate size %X", (UINT32) Size)); 443 444 return_PTR (NULL); 445 } 446 447 return_PTR (Allocation); 448 } 449 450 451 /******************************************************************************* 452 * 453 * FUNCTION: AcpiUtAllocateZeroed 454 * 455 * PARAMETERS: Size - Size of the allocation 456 * Component - Component type of caller 457 * Module - Source file name of caller 458 * Line - Line number of caller 459 * 460 * RETURN: Address of the allocated memory on success, NULL on failure. 461 * 462 * DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory. 463 * 464 ******************************************************************************/ 465 466 void * 467 AcpiUtAllocateZeroed ( 468 ACPI_SIZE Size, 469 UINT32 Component, 470 const char *Module, 471 UINT32 Line) 472 { 473 void *Allocation; 474 475 476 ACPI_FUNCTION_ENTRY (); 477 478 479 Allocation = AcpiUtAllocate (Size, Component, Module, Line); 480 if (Allocation) 481 { 482 /* Clear the memory block */ 483 484 ACPI_MEMSET (Allocation, 0, Size); 485 } 486 487 return (Allocation); 488 } 489 490