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 - 2016, 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 #include "acpi.h" 117 #include "accommon.h" 118 #include "acnamesp.h" 119 120 121 #define _COMPONENT ACPI_UTILITIES 122 ACPI_MODULE_NAME ("utobject") 123 124 /* Local prototypes */ 125 126 static ACPI_STATUS 127 AcpiUtGetSimpleObjectSize ( 128 ACPI_OPERAND_OBJECT *Obj, 129 ACPI_SIZE *ObjLength); 130 131 static ACPI_STATUS 132 AcpiUtGetPackageObjectSize ( 133 ACPI_OPERAND_OBJECT *Obj, 134 ACPI_SIZE *ObjLength); 135 136 static ACPI_STATUS 137 AcpiUtGetElementLength ( 138 UINT8 ObjectType, 139 ACPI_OPERAND_OBJECT *SourceObject, 140 ACPI_GENERIC_STATE *State, 141 void *Context); 142 143 144 /******************************************************************************* 145 * 146 * FUNCTION: AcpiUtCreateInternalObjectDbg 147 * 148 * PARAMETERS: ModuleName - Source file name of caller 149 * LineNumber - Line number of caller 150 * ComponentId - Component type of caller 151 * Type - ACPI Type of the new object 152 * 153 * RETURN: A new internal object, null on failure 154 * 155 * DESCRIPTION: Create and initialize a new internal object. 156 * 157 * NOTE: We always allocate the worst-case object descriptor because 158 * these objects are cached, and we want them to be 159 * one-size-satisifies-any-request. This in itself may not be 160 * the most memory efficient, but the efficiency of the object 161 * cache should more than make up for this! 162 * 163 ******************************************************************************/ 164 165 ACPI_OPERAND_OBJECT * 166 AcpiUtCreateInternalObjectDbg ( 167 const char *ModuleName, 168 UINT32 LineNumber, 169 UINT32 ComponentId, 170 ACPI_OBJECT_TYPE Type) 171 { 172 ACPI_OPERAND_OBJECT *Object; 173 ACPI_OPERAND_OBJECT *SecondObject; 174 175 176 ACPI_FUNCTION_TRACE_STR (UtCreateInternalObjectDbg, 177 AcpiUtGetTypeName (Type)); 178 179 180 /* Allocate the raw object descriptor */ 181 182 Object = AcpiUtAllocateObjectDescDbg ( 183 ModuleName, LineNumber, ComponentId); 184 if (!Object) 185 { 186 return_PTR (NULL); 187 } 188 189 switch (Type) 190 { 191 case ACPI_TYPE_REGION: 192 case ACPI_TYPE_BUFFER_FIELD: 193 case ACPI_TYPE_LOCAL_BANK_FIELD: 194 195 /* These types require a secondary object */ 196 197 SecondObject = AcpiUtAllocateObjectDescDbg ( 198 ModuleName, LineNumber, ComponentId); 199 if (!SecondObject) 200 { 201 AcpiUtDeleteObjectDesc (Object); 202 return_PTR (NULL); 203 } 204 205 SecondObject->Common.Type = ACPI_TYPE_LOCAL_EXTRA; 206 SecondObject->Common.ReferenceCount = 1; 207 208 /* Link the second object to the first */ 209 210 Object->Common.NextObject = SecondObject; 211 break; 212 213 default: 214 215 /* All others have no secondary object */ 216 break; 217 } 218 219 /* Save the object type in the object descriptor */ 220 221 Object->Common.Type = (UINT8) Type; 222 223 /* Init the reference count */ 224 225 Object->Common.ReferenceCount = 1; 226 227 /* Any per-type initialization should go here */ 228 229 return_PTR (Object); 230 } 231 232 233 /******************************************************************************* 234 * 235 * FUNCTION: AcpiUtCreatePackageObject 236 * 237 * PARAMETERS: Count - Number of package elements 238 * 239 * RETURN: Pointer to a new Package object, null on failure 240 * 241 * DESCRIPTION: Create a fully initialized package object 242 * 243 ******************************************************************************/ 244 245 ACPI_OPERAND_OBJECT * 246 AcpiUtCreatePackageObject ( 247 UINT32 Count) 248 { 249 ACPI_OPERAND_OBJECT *PackageDesc; 250 ACPI_OPERAND_OBJECT **PackageElements; 251 252 253 ACPI_FUNCTION_TRACE_U32 (UtCreatePackageObject, Count); 254 255 256 /* Create a new Package object */ 257 258 PackageDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE); 259 if (!PackageDesc) 260 { 261 return_PTR (NULL); 262 } 263 264 /* 265 * Create the element array. Count+1 allows the array to be null 266 * terminated. 267 */ 268 PackageElements = ACPI_ALLOCATE_ZEROED ( 269 ((ACPI_SIZE) Count + 1) * sizeof (void *)); 270 if (!PackageElements) 271 { 272 ACPI_FREE (PackageDesc); 273 return_PTR (NULL); 274 } 275 276 PackageDesc->Package.Count = Count; 277 PackageDesc->Package.Elements = PackageElements; 278 return_PTR (PackageDesc); 279 } 280 281 282 /******************************************************************************* 283 * 284 * FUNCTION: AcpiUtCreateIntegerObject 285 * 286 * PARAMETERS: InitialValue - Initial value for the integer 287 * 288 * RETURN: Pointer to a new Integer object, null on failure 289 * 290 * DESCRIPTION: Create an initialized integer object 291 * 292 ******************************************************************************/ 293 294 ACPI_OPERAND_OBJECT * 295 AcpiUtCreateIntegerObject ( 296 UINT64 InitialValue) 297 { 298 ACPI_OPERAND_OBJECT *IntegerDesc; 299 300 301 ACPI_FUNCTION_TRACE (UtCreateIntegerObject); 302 303 304 /* Create and initialize a new integer object */ 305 306 IntegerDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 307 if (!IntegerDesc) 308 { 309 return_PTR (NULL); 310 } 311 312 IntegerDesc->Integer.Value = InitialValue; 313 return_PTR (IntegerDesc); 314 } 315 316 317 /******************************************************************************* 318 * 319 * FUNCTION: AcpiUtCreateBufferObject 320 * 321 * PARAMETERS: BufferSize - Size of buffer to be created 322 * 323 * RETURN: Pointer to a new Buffer object, null on failure 324 * 325 * DESCRIPTION: Create a fully initialized buffer object 326 * 327 ******************************************************************************/ 328 329 ACPI_OPERAND_OBJECT * 330 AcpiUtCreateBufferObject ( 331 ACPI_SIZE BufferSize) 332 { 333 ACPI_OPERAND_OBJECT *BufferDesc; 334 UINT8 *Buffer = NULL; 335 336 337 ACPI_FUNCTION_TRACE_U32 (UtCreateBufferObject, BufferSize); 338 339 340 /* Create a new Buffer object */ 341 342 BufferDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); 343 if (!BufferDesc) 344 { 345 return_PTR (NULL); 346 } 347 348 /* Create an actual buffer only if size > 0 */ 349 350 if (BufferSize > 0) 351 { 352 /* Allocate the actual buffer */ 353 354 Buffer = ACPI_ALLOCATE_ZEROED (BufferSize); 355 if (!Buffer) 356 { 357 ACPI_ERROR ((AE_INFO, "Could not allocate size %u", 358 (UINT32) BufferSize)); 359 360 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)); 419 420 AcpiUtRemoveReference (StringDesc); 421 return_PTR (NULL); 422 } 423 424 /* Complete string object initialization */ 425 426 StringDesc->String.Pointer = String; 427 StringDesc->String.Length = (UINT32) StringSize; 428 429 /* Return the new string descriptor */ 430 431 return_PTR (StringDesc); 432 } 433 434 435 /******************************************************************************* 436 * 437 * FUNCTION: AcpiUtValidInternalObject 438 * 439 * PARAMETERS: Object - Object to be validated 440 * 441 * RETURN: TRUE if object is valid, FALSE otherwise 442 * 443 * DESCRIPTION: Validate a pointer to be of type ACPI_OPERAND_OBJECT 444 * 445 ******************************************************************************/ 446 447 BOOLEAN 448 AcpiUtValidInternalObject ( 449 void *Object) 450 { 451 452 ACPI_FUNCTION_NAME (UtValidInternalObject); 453 454 455 /* Check for a null pointer */ 456 457 if (!Object) 458 { 459 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "**** Null Object Ptr\n")); 460 return (FALSE); 461 } 462 463 /* Check the descriptor type field */ 464 465 switch (ACPI_GET_DESCRIPTOR_TYPE (Object)) 466 { 467 case ACPI_DESC_TYPE_OPERAND: 468 469 /* The object appears to be a valid ACPI_OPERAND_OBJECT */ 470 471 return (TRUE); 472 473 default: 474 475 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 476 "%p is not an ACPI operand obj [%s]\n", 477 Object, AcpiUtGetDescriptorName (Object))); 478 break; 479 } 480 481 return (FALSE); 482 } 483 484 485 /******************************************************************************* 486 * 487 * FUNCTION: AcpiUtAllocateObjectDescDbg 488 * 489 * PARAMETERS: ModuleName - Caller's module name (for error output) 490 * LineNumber - Caller's line number (for error output) 491 * ComponentId - Caller's component ID (for error output) 492 * 493 * RETURN: Pointer to newly allocated object descriptor. Null on error 494 * 495 * DESCRIPTION: Allocate a new object descriptor. Gracefully handle 496 * error conditions. 497 * 498 ******************************************************************************/ 499 500 void * 501 AcpiUtAllocateObjectDescDbg ( 502 const char *ModuleName, 503 UINT32 LineNumber, 504 UINT32 ComponentId) 505 { 506 ACPI_OPERAND_OBJECT *Object; 507 508 509 ACPI_FUNCTION_TRACE (UtAllocateObjectDescDbg); 510 511 512 Object = AcpiOsAcquireObject (AcpiGbl_OperandCache); 513 if (!Object) 514 { 515 ACPI_ERROR ((ModuleName, LineNumber, 516 "Could not allocate an object descriptor")); 517 518 return_PTR (NULL); 519 } 520 521 /* Mark the descriptor type */ 522 523 ACPI_SET_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_OPERAND); 524 525 ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n", 526 Object, (UINT32) sizeof (ACPI_OPERAND_OBJECT))); 527 528 return_PTR (Object); 529 } 530 531 532 /******************************************************************************* 533 * 534 * FUNCTION: AcpiUtDeleteObjectDesc 535 * 536 * PARAMETERS: Object - An Acpi internal object to be deleted 537 * 538 * RETURN: None. 539 * 540 * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache 541 * 542 ******************************************************************************/ 543 544 void 545 AcpiUtDeleteObjectDesc ( 546 ACPI_OPERAND_OBJECT *Object) 547 { 548 ACPI_FUNCTION_TRACE_PTR (UtDeleteObjectDesc, Object); 549 550 551 /* Object must be of type ACPI_OPERAND_OBJECT */ 552 553 if (ACPI_GET_DESCRIPTOR_TYPE (Object) != ACPI_DESC_TYPE_OPERAND) 554 { 555 ACPI_ERROR ((AE_INFO, 556 "%p is not an ACPI Operand object [%s]", Object, 557 AcpiUtGetDescriptorName (Object))); 558 return_VOID; 559 } 560 561 (void) AcpiOsReleaseObject (AcpiGbl_OperandCache, Object); 562 return_VOID; 563 } 564 565 566 /******************************************************************************* 567 * 568 * FUNCTION: AcpiUtGetSimpleObjectSize 569 * 570 * PARAMETERS: InternalObject - An ACPI operand object 571 * ObjLength - Where the length is returned 572 * 573 * RETURN: Status 574 * 575 * DESCRIPTION: This function is called to determine the space required to 576 * contain a simple object for return to an external user. 577 * 578 * The length includes the object structure plus any additional 579 * needed space. 580 * 581 ******************************************************************************/ 582 583 static ACPI_STATUS 584 AcpiUtGetSimpleObjectSize ( 585 ACPI_OPERAND_OBJECT *InternalObject, 586 ACPI_SIZE *ObjLength) 587 { 588 ACPI_SIZE Length; 589 ACPI_SIZE Size; 590 ACPI_STATUS Status = AE_OK; 591 592 593 ACPI_FUNCTION_TRACE_PTR (UtGetSimpleObjectSize, InternalObject); 594 595 596 /* Start with the length of the (external) Acpi object */ 597 598 Length = sizeof (ACPI_OBJECT); 599 600 /* A NULL object is allowed, can be a legal uninitialized package element */ 601 602 if (!InternalObject) 603 { 604 /* 605 * Object is NULL, just return the length of ACPI_OBJECT 606 * (A NULL ACPI_OBJECT is an object of all zeroes.) 607 */ 608 *ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length); 609 return_ACPI_STATUS (AE_OK); 610 } 611 612 /* A Namespace Node should never appear here */ 613 614 if (ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_NAMED) 615 { 616 /* A namespace node should never get here */ 617 618 return_ACPI_STATUS (AE_AML_INTERNAL); 619 } 620 621 /* 622 * The final length depends on the object type 623 * Strings and Buffers are packed right up against the parent object and 624 * must be accessed bytewise or there may be alignment problems on 625 * certain processors 626 */ 627 switch (InternalObject->Common.Type) 628 { 629 case ACPI_TYPE_STRING: 630 631 Length += (ACPI_SIZE) InternalObject->String.Length + 1; 632 break; 633 634 case ACPI_TYPE_BUFFER: 635 636 Length += (ACPI_SIZE) InternalObject->Buffer.Length; 637 break; 638 639 case ACPI_TYPE_INTEGER: 640 case ACPI_TYPE_PROCESSOR: 641 case ACPI_TYPE_POWER: 642 643 /* No extra data for these types */ 644 645 break; 646 647 case ACPI_TYPE_LOCAL_REFERENCE: 648 649 switch (InternalObject->Reference.Class) 650 { 651 case ACPI_REFCLASS_NAME: 652 /* 653 * Get the actual length of the full pathname to this object. 654 * The reference will be converted to the pathname to the object 655 */ 656 Size = AcpiNsGetPathnameLength (InternalObject->Reference.Node); 657 if (!Size) 658 { 659 return_ACPI_STATUS (AE_BAD_PARAMETER); 660 } 661 662 Length += ACPI_ROUND_UP_TO_NATIVE_WORD (Size); 663 break; 664 665 default: 666 /* 667 * No other reference opcodes are supported. 668 * Notably, Locals and Args are not supported, but this may be 669 * required eventually. 670 */ 671 ACPI_ERROR ((AE_INFO, "Cannot convert to external object - " 672 "unsupported Reference Class [%s] 0x%X in object %p", 673 AcpiUtGetReferenceName (InternalObject), 674 InternalObject->Reference.Class, InternalObject)); 675 Status = AE_TYPE; 676 break; 677 } 678 break; 679 680 default: 681 682 ACPI_ERROR ((AE_INFO, "Cannot convert to external object - " 683 "unsupported type [%s] 0x%X in object %p", 684 AcpiUtGetObjectTypeName (InternalObject), 685 InternalObject->Common.Type, InternalObject)); 686 Status = AE_TYPE; 687 break; 688 } 689 690 /* 691 * Account for the space required by the object rounded up to the next 692 * multiple of the machine word size. This keeps each object aligned 693 * on a machine word boundary. (preventing alignment faults on some 694 * machines.) 695 */ 696 *ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length); 697 return_ACPI_STATUS (Status); 698 } 699 700 701 /******************************************************************************* 702 * 703 * FUNCTION: AcpiUtGetElementLength 704 * 705 * PARAMETERS: ACPI_PKG_CALLBACK 706 * 707 * RETURN: Status 708 * 709 * DESCRIPTION: Get the length of one package element. 710 * 711 ******************************************************************************/ 712 713 static ACPI_STATUS 714 AcpiUtGetElementLength ( 715 UINT8 ObjectType, 716 ACPI_OPERAND_OBJECT *SourceObject, 717 ACPI_GENERIC_STATE *State, 718 void *Context) 719 { 720 ACPI_STATUS Status = AE_OK; 721 ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context; 722 ACPI_SIZE ObjectSpace; 723 724 725 switch (ObjectType) 726 { 727 case ACPI_COPY_TYPE_SIMPLE: 728 /* 729 * Simple object - just get the size (Null object/entry is handled 730 * here also) and sum it into the running package length 731 */ 732 Status = AcpiUtGetSimpleObjectSize (SourceObject, &ObjectSpace); 733 if (ACPI_FAILURE (Status)) 734 { 735 return (Status); 736 } 737 738 Info->Length += ObjectSpace; 739 break; 740 741 case ACPI_COPY_TYPE_PACKAGE: 742 743 /* Package object - nothing much to do here, let the walk handle it */ 744 745 Info->NumPackages++; 746 State->Pkg.ThisTargetObj = NULL; 747 break; 748 749 default: 750 751 /* No other types allowed */ 752 753 return (AE_BAD_PARAMETER); 754 } 755 756 return (Status); 757 } 758 759 760 /******************************************************************************* 761 * 762 * FUNCTION: AcpiUtGetPackageObjectSize 763 * 764 * PARAMETERS: InternalObject - An ACPI internal object 765 * ObjLength - Where the length is returned 766 * 767 * RETURN: Status 768 * 769 * DESCRIPTION: This function is called to determine the space required to 770 * contain a package object for return to an external user. 771 * 772 * This is moderately complex since a package contains other 773 * objects including packages. 774 * 775 ******************************************************************************/ 776 777 static ACPI_STATUS 778 AcpiUtGetPackageObjectSize ( 779 ACPI_OPERAND_OBJECT *InternalObject, 780 ACPI_SIZE *ObjLength) 781 { 782 ACPI_STATUS Status; 783 ACPI_PKG_INFO Info; 784 785 786 ACPI_FUNCTION_TRACE_PTR (UtGetPackageObjectSize, InternalObject); 787 788 789 Info.Length = 0; 790 Info.ObjectSpace = 0; 791 Info.NumPackages = 1; 792 793 Status = AcpiUtWalkPackageTree ( 794 InternalObject, NULL, AcpiUtGetElementLength, &Info); 795 if (ACPI_FAILURE (Status)) 796 { 797 return_ACPI_STATUS (Status); 798 } 799 800 /* 801 * We have handled all of the objects in all levels of the package. 802 * just add the length of the package objects themselves. 803 * Round up to the next machine word. 804 */ 805 Info.Length += ACPI_ROUND_UP_TO_NATIVE_WORD ( 806 sizeof (ACPI_OBJECT)) * (ACPI_SIZE) Info.NumPackages; 807 808 /* Return the total package length */ 809 810 *ObjLength = Info.Length; 811 return_ACPI_STATUS (Status); 812 } 813 814 815 /******************************************************************************* 816 * 817 * FUNCTION: AcpiUtGetObjectSize 818 * 819 * PARAMETERS: InternalObject - An ACPI internal object 820 * ObjLength - Where the length will be returned 821 * 822 * RETURN: Status 823 * 824 * DESCRIPTION: This function is called to determine the space required to 825 * contain an object for return to an API user. 826 * 827 ******************************************************************************/ 828 829 ACPI_STATUS 830 AcpiUtGetObjectSize ( 831 ACPI_OPERAND_OBJECT *InternalObject, 832 ACPI_SIZE *ObjLength) 833 { 834 ACPI_STATUS Status; 835 836 837 ACPI_FUNCTION_ENTRY (); 838 839 840 if ((ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == 841 ACPI_DESC_TYPE_OPERAND) && 842 (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)) 843 { 844 Status = AcpiUtGetPackageObjectSize (InternalObject, ObjLength); 845 } 846 else 847 { 848 Status = AcpiUtGetSimpleObjectSize (InternalObject, ObjLength); 849 } 850 851 return (Status); 852 } 853