1 /****************************************************************************** 2 * 3 * Module Name: utobject - ACPI object create/delete/size/cache routines 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2013, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #define __UTOBJECT_C__ 117 118 #include "acpi.h" 119 #include "accommon.h" 120 #include "acnamesp.h" 121 122 123 #define _COMPONENT ACPI_UTILITIES 124 ACPI_MODULE_NAME ("utobject") 125 126 /* Local prototypes */ 127 128 static ACPI_STATUS 129 AcpiUtGetSimpleObjectSize ( 130 ACPI_OPERAND_OBJECT *Obj, 131 ACPI_SIZE *ObjLength); 132 133 static ACPI_STATUS 134 AcpiUtGetPackageObjectSize ( 135 ACPI_OPERAND_OBJECT *Obj, 136 ACPI_SIZE *ObjLength); 137 138 static ACPI_STATUS 139 AcpiUtGetElementLength ( 140 UINT8 ObjectType, 141 ACPI_OPERAND_OBJECT *SourceObject, 142 ACPI_GENERIC_STATE *State, 143 void *Context); 144 145 146 /******************************************************************************* 147 * 148 * FUNCTION: AcpiUtCreateInternalObjectDbg 149 * 150 * PARAMETERS: ModuleName - Source file name of caller 151 * LineNumber - Line number of caller 152 * ComponentId - Component type of caller 153 * Type - ACPI Type of the new object 154 * 155 * RETURN: A new internal object, null on failure 156 * 157 * DESCRIPTION: Create and initialize a new internal object. 158 * 159 * NOTE: We always allocate the worst-case object descriptor because 160 * these objects are cached, and we want them to be 161 * one-size-satisifies-any-request. This in itself may not be 162 * the most memory efficient, but the efficiency of the object 163 * cache should more than make up for this! 164 * 165 ******************************************************************************/ 166 167 ACPI_OPERAND_OBJECT * 168 AcpiUtCreateInternalObjectDbg ( 169 const char *ModuleName, 170 UINT32 LineNumber, 171 UINT32 ComponentId, 172 ACPI_OBJECT_TYPE Type) 173 { 174 ACPI_OPERAND_OBJECT *Object; 175 ACPI_OPERAND_OBJECT *SecondObject; 176 177 178 ACPI_FUNCTION_TRACE_STR (UtCreateInternalObjectDbg, 179 AcpiUtGetTypeName (Type)); 180 181 182 /* Allocate the raw object descriptor */ 183 184 Object = AcpiUtAllocateObjectDescDbg (ModuleName, LineNumber, ComponentId); 185 if (!Object) 186 { 187 return_PTR (NULL); 188 } 189 190 switch (Type) 191 { 192 case ACPI_TYPE_REGION: 193 case ACPI_TYPE_BUFFER_FIELD: 194 case ACPI_TYPE_LOCAL_BANK_FIELD: 195 196 /* These types require a secondary object */ 197 198 SecondObject = AcpiUtAllocateObjectDescDbg (ModuleName, 199 LineNumber, ComponentId); 200 if (!SecondObject) 201 { 202 AcpiUtDeleteObjectDesc (Object); 203 return_PTR (NULL); 204 } 205 206 SecondObject->Common.Type = ACPI_TYPE_LOCAL_EXTRA; 207 SecondObject->Common.ReferenceCount = 1; 208 209 /* Link the second object to the first */ 210 211 Object->Common.NextObject = SecondObject; 212 break; 213 214 default: 215 216 /* All others have no secondary object */ 217 break; 218 } 219 220 /* Save the object type in the object descriptor */ 221 222 Object->Common.Type = (UINT8) Type; 223 224 /* Init the reference count */ 225 226 Object->Common.ReferenceCount = 1; 227 228 /* Any per-type initialization should go here */ 229 230 return_PTR (Object); 231 } 232 233 234 /******************************************************************************* 235 * 236 * FUNCTION: AcpiUtCreatePackageObject 237 * 238 * PARAMETERS: Count - Number of package elements 239 * 240 * RETURN: Pointer to a new Package object, null on failure 241 * 242 * DESCRIPTION: Create a fully initialized package object 243 * 244 ******************************************************************************/ 245 246 ACPI_OPERAND_OBJECT * 247 AcpiUtCreatePackageObject ( 248 UINT32 Count) 249 { 250 ACPI_OPERAND_OBJECT *PackageDesc; 251 ACPI_OPERAND_OBJECT **PackageElements; 252 253 254 ACPI_FUNCTION_TRACE_U32 (UtCreatePackageObject, Count); 255 256 257 /* Create a new Package object */ 258 259 PackageDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE); 260 if (!PackageDesc) 261 { 262 return_PTR (NULL); 263 } 264 265 /* 266 * Create the element array. Count+1 allows the array to be null 267 * terminated. 268 */ 269 PackageElements = ACPI_ALLOCATE_ZEROED ( 270 ((ACPI_SIZE) Count + 1) * sizeof (void *)); 271 if (!PackageElements) 272 { 273 ACPI_FREE (PackageDesc); 274 return_PTR (NULL); 275 } 276 277 PackageDesc->Package.Count = Count; 278 PackageDesc->Package.Elements = PackageElements; 279 return_PTR (PackageDesc); 280 } 281 282 283 /******************************************************************************* 284 * 285 * FUNCTION: AcpiUtCreateIntegerObject 286 * 287 * PARAMETERS: InitialValue - Initial value for the integer 288 * 289 * RETURN: Pointer to a new Integer object, null on failure 290 * 291 * DESCRIPTION: Create an initialized integer object 292 * 293 ******************************************************************************/ 294 295 ACPI_OPERAND_OBJECT * 296 AcpiUtCreateIntegerObject ( 297 UINT64 InitialValue) 298 { 299 ACPI_OPERAND_OBJECT *IntegerDesc; 300 301 302 ACPI_FUNCTION_TRACE (UtCreateIntegerObject); 303 304 305 /* Create and initialize a new integer object */ 306 307 IntegerDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 308 if (!IntegerDesc) 309 { 310 return_PTR (NULL); 311 } 312 313 IntegerDesc->Integer.Value = InitialValue; 314 return_PTR (IntegerDesc); 315 } 316 317 318 /******************************************************************************* 319 * 320 * FUNCTION: AcpiUtCreateBufferObject 321 * 322 * PARAMETERS: BufferSize - Size of buffer to be created 323 * 324 * RETURN: Pointer to a new Buffer object, null on failure 325 * 326 * DESCRIPTION: Create a fully initialized buffer object 327 * 328 ******************************************************************************/ 329 330 ACPI_OPERAND_OBJECT * 331 AcpiUtCreateBufferObject ( 332 ACPI_SIZE BufferSize) 333 { 334 ACPI_OPERAND_OBJECT *BufferDesc; 335 UINT8 *Buffer = NULL; 336 337 338 ACPI_FUNCTION_TRACE_U32 (UtCreateBufferObject, BufferSize); 339 340 341 /* Create a new Buffer object */ 342 343 BufferDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); 344 if (!BufferDesc) 345 { 346 return_PTR (NULL); 347 } 348 349 /* Create an actual buffer only if size > 0 */ 350 351 if (BufferSize > 0) 352 { 353 /* Allocate the actual buffer */ 354 355 Buffer = ACPI_ALLOCATE_ZEROED (BufferSize); 356 if (!Buffer) 357 { 358 ACPI_ERROR ((AE_INFO, "Could not allocate size %u", 359 (UINT32) BufferSize)); 360 AcpiUtRemoveReference (BufferDesc); 361 return_PTR (NULL); 362 } 363 } 364 365 /* Complete buffer object initialization */ 366 367 BufferDesc->Buffer.Flags |= AOPOBJ_DATA_VALID; 368 BufferDesc->Buffer.Pointer = Buffer; 369 BufferDesc->Buffer.Length = (UINT32) BufferSize; 370 371 /* Return the new buffer descriptor */ 372 373 return_PTR (BufferDesc); 374 } 375 376 377 /******************************************************************************* 378 * 379 * FUNCTION: AcpiUtCreateStringObject 380 * 381 * PARAMETERS: StringSize - Size of string to be created. Does not 382 * include NULL terminator, this is added 383 * automatically. 384 * 385 * RETURN: Pointer to a new String object 386 * 387 * DESCRIPTION: Create a fully initialized string object 388 * 389 ******************************************************************************/ 390 391 ACPI_OPERAND_OBJECT * 392 AcpiUtCreateStringObject ( 393 ACPI_SIZE StringSize) 394 { 395 ACPI_OPERAND_OBJECT *StringDesc; 396 char *String; 397 398 399 ACPI_FUNCTION_TRACE_U32 (UtCreateStringObject, StringSize); 400 401 402 /* Create a new String object */ 403 404 StringDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING); 405 if (!StringDesc) 406 { 407 return_PTR (NULL); 408 } 409 410 /* 411 * Allocate the actual string buffer -- (Size + 1) for NULL terminator. 412 * NOTE: Zero-length strings are NULL terminated 413 */ 414 String = ACPI_ALLOCATE_ZEROED (StringSize + 1); 415 if (!String) 416 { 417 ACPI_ERROR ((AE_INFO, "Could not allocate size %u", 418 (UINT32) StringSize)); 419 AcpiUtRemoveReference (StringDesc); 420 return_PTR (NULL); 421 } 422 423 /* Complete string object initialization */ 424 425 StringDesc->String.Pointer = String; 426 StringDesc->String.Length = (UINT32) StringSize; 427 428 /* Return the new string descriptor */ 429 430 return_PTR (StringDesc); 431 } 432 433 434 /******************************************************************************* 435 * 436 * FUNCTION: AcpiUtValidInternalObject 437 * 438 * PARAMETERS: Object - Object to be validated 439 * 440 * RETURN: TRUE if object is valid, FALSE otherwise 441 * 442 * DESCRIPTION: Validate a pointer to be of type ACPI_OPERAND_OBJECT 443 * 444 ******************************************************************************/ 445 446 BOOLEAN 447 AcpiUtValidInternalObject ( 448 void *Object) 449 { 450 451 ACPI_FUNCTION_NAME (UtValidInternalObject); 452 453 454 /* Check for a null pointer */ 455 456 if (!Object) 457 { 458 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "**** Null Object Ptr\n")); 459 return (FALSE); 460 } 461 462 /* Check the descriptor type field */ 463 464 switch (ACPI_GET_DESCRIPTOR_TYPE (Object)) 465 { 466 case ACPI_DESC_TYPE_OPERAND: 467 468 /* The object appears to be a valid ACPI_OPERAND_OBJECT */ 469 470 return (TRUE); 471 472 default: 473 474 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 475 "%p is not not an ACPI operand obj [%s]\n", 476 Object, AcpiUtGetDescriptorName (Object))); 477 break; 478 } 479 480 return (FALSE); 481 } 482 483 484 /******************************************************************************* 485 * 486 * FUNCTION: AcpiUtAllocateObjectDescDbg 487 * 488 * PARAMETERS: ModuleName - Caller's module name (for error output) 489 * LineNumber - Caller's line number (for error output) 490 * ComponentId - Caller's component ID (for error output) 491 * 492 * RETURN: Pointer to newly allocated object descriptor. Null on error 493 * 494 * DESCRIPTION: Allocate a new object descriptor. Gracefully handle 495 * error conditions. 496 * 497 ******************************************************************************/ 498 499 void * 500 AcpiUtAllocateObjectDescDbg ( 501 const char *ModuleName, 502 UINT32 LineNumber, 503 UINT32 ComponentId) 504 { 505 ACPI_OPERAND_OBJECT *Object; 506 507 508 ACPI_FUNCTION_TRACE (UtAllocateObjectDescDbg); 509 510 511 Object = AcpiOsAcquireObject (AcpiGbl_OperandCache); 512 if (!Object) 513 { 514 ACPI_ERROR ((ModuleName, LineNumber, 515 "Could not allocate an object descriptor")); 516 517 return_PTR (NULL); 518 } 519 520 /* Mark the descriptor type */ 521 522 ACPI_SET_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_OPERAND); 523 524 ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n", 525 Object, (UINT32) sizeof (ACPI_OPERAND_OBJECT))); 526 527 return_PTR (Object); 528 } 529 530 531 /******************************************************************************* 532 * 533 * FUNCTION: AcpiUtDeleteObjectDesc 534 * 535 * PARAMETERS: Object - An Acpi internal object to be deleted 536 * 537 * RETURN: None. 538 * 539 * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache 540 * 541 ******************************************************************************/ 542 543 void 544 AcpiUtDeleteObjectDesc ( 545 ACPI_OPERAND_OBJECT *Object) 546 { 547 ACPI_FUNCTION_TRACE_PTR (UtDeleteObjectDesc, Object); 548 549 550 /* Object must be of type ACPI_OPERAND_OBJECT */ 551 552 if (ACPI_GET_DESCRIPTOR_TYPE (Object) != ACPI_DESC_TYPE_OPERAND) 553 { 554 ACPI_ERROR ((AE_INFO, 555 "%p is not an ACPI Operand object [%s]", Object, 556 AcpiUtGetDescriptorName (Object))); 557 return_VOID; 558 } 559 560 (void) AcpiOsReleaseObject (AcpiGbl_OperandCache, Object); 561 return_VOID; 562 } 563 564 565 /******************************************************************************* 566 * 567 * FUNCTION: AcpiUtGetSimpleObjectSize 568 * 569 * PARAMETERS: InternalObject - An ACPI operand object 570 * ObjLength - Where the length is returned 571 * 572 * RETURN: Status 573 * 574 * DESCRIPTION: This function is called to determine the space required to 575 * contain a simple object for return to an external user. 576 * 577 * The length includes the object structure plus any additional 578 * needed space. 579 * 580 ******************************************************************************/ 581 582 static ACPI_STATUS 583 AcpiUtGetSimpleObjectSize ( 584 ACPI_OPERAND_OBJECT *InternalObject, 585 ACPI_SIZE *ObjLength) 586 { 587 ACPI_SIZE Length; 588 ACPI_SIZE Size; 589 ACPI_STATUS Status = AE_OK; 590 591 592 ACPI_FUNCTION_TRACE_PTR (UtGetSimpleObjectSize, InternalObject); 593 594 595 /* Start with the length of the (external) Acpi object */ 596 597 Length = sizeof (ACPI_OBJECT); 598 599 /* A NULL object is allowed, can be a legal uninitialized package element */ 600 601 if (!InternalObject) 602 { 603 /* 604 * Object is NULL, just return the length of ACPI_OBJECT 605 * (A NULL ACPI_OBJECT is an object of all zeroes.) 606 */ 607 *ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length); 608 return_ACPI_STATUS (AE_OK); 609 } 610 611 /* A Namespace Node should never appear here */ 612 613 if (ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_NAMED) 614 { 615 /* A namespace node should never get here */ 616 617 return_ACPI_STATUS (AE_AML_INTERNAL); 618 } 619 620 /* 621 * The final length depends on the object type 622 * Strings and Buffers are packed right up against the parent object and 623 * must be accessed bytewise or there may be alignment problems on 624 * certain processors 625 */ 626 switch (InternalObject->Common.Type) 627 { 628 case ACPI_TYPE_STRING: 629 630 Length += (ACPI_SIZE) InternalObject->String.Length + 1; 631 break; 632 633 case ACPI_TYPE_BUFFER: 634 635 Length += (ACPI_SIZE) InternalObject->Buffer.Length; 636 break; 637 638 case ACPI_TYPE_INTEGER: 639 case ACPI_TYPE_PROCESSOR: 640 case ACPI_TYPE_POWER: 641 642 /* No extra data for these types */ 643 644 break; 645 646 case ACPI_TYPE_LOCAL_REFERENCE: 647 648 switch (InternalObject->Reference.Class) 649 { 650 case ACPI_REFCLASS_NAME: 651 /* 652 * Get the actual length of the full pathname to this object. 653 * The reference will be converted to the pathname to the object 654 */ 655 Size = AcpiNsGetPathnameLength (InternalObject->Reference.Node); 656 if (!Size) 657 { 658 return_ACPI_STATUS (AE_BAD_PARAMETER); 659 } 660 661 Length += ACPI_ROUND_UP_TO_NATIVE_WORD (Size); 662 break; 663 664 default: 665 /* 666 * No other reference opcodes are supported. 667 * Notably, Locals and Args are not supported, but this may be 668 * required eventually. 669 */ 670 ACPI_ERROR ((AE_INFO, "Cannot convert to external object - " 671 "unsupported Reference Class [%s] 0x%X in object %p", 672 AcpiUtGetReferenceName (InternalObject), 673 InternalObject->Reference.Class, InternalObject)); 674 Status = AE_TYPE; 675 break; 676 } 677 break; 678 679 default: 680 681 ACPI_ERROR ((AE_INFO, "Cannot convert to external object - " 682 "unsupported type [%s] 0x%X in object %p", 683 AcpiUtGetObjectTypeName (InternalObject), 684 InternalObject->Common.Type, InternalObject)); 685 Status = AE_TYPE; 686 break; 687 } 688 689 /* 690 * Account for the space required by the object rounded up to the next 691 * multiple of the machine word size. This keeps each object aligned 692 * on a machine word boundary. (preventing alignment faults on some 693 * machines.) 694 */ 695 *ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length); 696 return_ACPI_STATUS (Status); 697 } 698 699 700 /******************************************************************************* 701 * 702 * FUNCTION: AcpiUtGetElementLength 703 * 704 * PARAMETERS: ACPI_PKG_CALLBACK 705 * 706 * RETURN: Status 707 * 708 * DESCRIPTION: Get the length of one package element. 709 * 710 ******************************************************************************/ 711 712 static ACPI_STATUS 713 AcpiUtGetElementLength ( 714 UINT8 ObjectType, 715 ACPI_OPERAND_OBJECT *SourceObject, 716 ACPI_GENERIC_STATE *State, 717 void *Context) 718 { 719 ACPI_STATUS Status = AE_OK; 720 ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context; 721 ACPI_SIZE ObjectSpace; 722 723 724 switch (ObjectType) 725 { 726 case ACPI_COPY_TYPE_SIMPLE: 727 /* 728 * Simple object - just get the size (Null object/entry is handled 729 * here also) and sum it into the running package length 730 */ 731 Status = AcpiUtGetSimpleObjectSize (SourceObject, &ObjectSpace); 732 if (ACPI_FAILURE (Status)) 733 { 734 return (Status); 735 } 736 737 Info->Length += ObjectSpace; 738 break; 739 740 case ACPI_COPY_TYPE_PACKAGE: 741 742 /* Package object - nothing much to do here, let the walk handle it */ 743 744 Info->NumPackages++; 745 State->Pkg.ThisTargetObj = NULL; 746 break; 747 748 default: 749 750 /* No other types allowed */ 751 752 return (AE_BAD_PARAMETER); 753 } 754 755 return (Status); 756 } 757 758 759 /******************************************************************************* 760 * 761 * FUNCTION: AcpiUtGetPackageObjectSize 762 * 763 * PARAMETERS: InternalObject - An ACPI internal object 764 * ObjLength - Where the length is returned 765 * 766 * RETURN: Status 767 * 768 * DESCRIPTION: This function is called to determine the space required to 769 * contain a package object for return to an external user. 770 * 771 * This is moderately complex since a package contains other 772 * objects including packages. 773 * 774 ******************************************************************************/ 775 776 static ACPI_STATUS 777 AcpiUtGetPackageObjectSize ( 778 ACPI_OPERAND_OBJECT *InternalObject, 779 ACPI_SIZE *ObjLength) 780 { 781 ACPI_STATUS Status; 782 ACPI_PKG_INFO Info; 783 784 785 ACPI_FUNCTION_TRACE_PTR (UtGetPackageObjectSize, InternalObject); 786 787 788 Info.Length = 0; 789 Info.ObjectSpace = 0; 790 Info.NumPackages = 1; 791 792 Status = AcpiUtWalkPackageTree (InternalObject, NULL, 793 AcpiUtGetElementLength, &Info); 794 if (ACPI_FAILURE (Status)) 795 { 796 return_ACPI_STATUS (Status); 797 } 798 799 /* 800 * We have handled all of the objects in all levels of the package. 801 * just add the length of the package objects themselves. 802 * Round up to the next machine word. 803 */ 804 Info.Length += ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)) * 805 (ACPI_SIZE) Info.NumPackages; 806 807 /* Return the total package length */ 808 809 *ObjLength = Info.Length; 810 return_ACPI_STATUS (Status); 811 } 812 813 814 /******************************************************************************* 815 * 816 * FUNCTION: AcpiUtGetObjectSize 817 * 818 * PARAMETERS: InternalObject - An ACPI internal object 819 * ObjLength - Where the length will be returned 820 * 821 * RETURN: Status 822 * 823 * DESCRIPTION: This function is called to determine the space required to 824 * contain an object for return to an API user. 825 * 826 ******************************************************************************/ 827 828 ACPI_STATUS 829 AcpiUtGetObjectSize ( 830 ACPI_OPERAND_OBJECT *InternalObject, 831 ACPI_SIZE *ObjLength) 832 { 833 ACPI_STATUS Status; 834 835 836 ACPI_FUNCTION_ENTRY (); 837 838 839 if ((ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_OPERAND) && 840 (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)) 841 { 842 Status = AcpiUtGetPackageObjectSize (InternalObject, ObjLength); 843 } 844 else 845 { 846 Status = AcpiUtGetSimpleObjectSize (InternalObject, ObjLength); 847 } 848 849 return (Status); 850 } 851