dsobject.c revision 71867
1/****************************************************************************** 2 * 3 * Module Name: dsobject - Dispatcher object management routines 4 * $Revision: 56 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __DSOBJECT_C__ 118 119#include "acpi.h" 120#include "acparser.h" 121#include "amlcode.h" 122#include "acdispat.h" 123#include "acinterp.h" 124#include "acnamesp.h" 125 126#define _COMPONENT DISPATCHER 127 MODULE_NAME ("dsobject") 128 129 130/******************************************************************************* 131 * 132 * FUNCTION: AcpiDsInitOneObject 133 * 134 * PARAMETERS: ObjHandle - Node 135 * Level - Current nesting level 136 * Context - Points to a init info struct 137 * ReturnValue - Not used 138 * 139 * RETURN: Status 140 * 141 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 142 * within the namespace. 143 * 144 * Currently, the only objects that require initialization are: 145 * 1) Methods 146 * 2) Op Regions 147 * 148 ******************************************************************************/ 149 150ACPI_STATUS 151AcpiDsInitOneObject ( 152 ACPI_HANDLE ObjHandle, 153 UINT32 Level, 154 void *Context, 155 void **ReturnValue) 156{ 157 OBJECT_TYPE_INTERNAL Type; 158 ACPI_STATUS Status; 159 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 160 UINT8 TableRevision; 161 162 163 Info->ObjectCount++; 164 TableRevision = Info->TableDesc->Pointer->Revision; 165 166 /* 167 * We are only interested in objects owned by the table that 168 * was just loaded 169 */ 170 171 if (((ACPI_NAMESPACE_NODE *) ObjHandle)->OwnerId != 172 Info->TableDesc->TableId) 173 { 174 return (AE_OK); 175 } 176 177 178 /* And even then, we are only interested in a few object types */ 179 180 Type = AcpiNsGetType (ObjHandle); 181 182 switch (Type) 183 { 184 185 case ACPI_TYPE_REGION: 186 187 AcpiDsInitializeRegion (ObjHandle); 188 189 Info->OpRegionCount++; 190 break; 191 192 193 case ACPI_TYPE_METHOD: 194 195 Info->MethodCount++; 196 197 DEBUG_PRINT_RAW (ACPI_OK, (".")); 198 199 /* 200 * Set the execution data width (32 or 64) based upon the 201 * revision number of the parent ACPI table. 202 */ 203 204 if (TableRevision == 1) 205 { 206 ((ACPI_NAMESPACE_NODE *)ObjHandle)->Flags |= ANOBJ_DATA_WIDTH_32; 207 } 208 209 /* 210 * Always parse methods to detect errors, we may delete 211 * the parse tree below 212 */ 213 214 Status = AcpiDsParseMethod (ObjHandle); 215 216 /* TBD: [Errors] what do we do with an error? */ 217 218 if (ACPI_FAILURE (Status)) 219 { 220 DEBUG_PRINT (ACPI_ERROR, 221 ("DsInitOneObject: Method %p [%4.4s] parse failed! %s\n", 222 ObjHandle, &((ACPI_NAMESPACE_NODE *)ObjHandle)->Name, 223 AcpiCmFormatException (Status))); 224 break; 225 } 226 227 /* 228 * Delete the parse tree. We simple re-parse the method 229 * for every execution since there isn't much overhead 230 */ 231 AcpiNsDeleteNamespaceSubtree (ObjHandle); 232 break; 233 234 default: 235 break; 236 } 237 238 /* 239 * We ignore errors from above, and always return OK, since 240 * we don't want to abort the walk on a single error. 241 */ 242 return (AE_OK); 243} 244 245 246/******************************************************************************* 247 * 248 * FUNCTION: AcpiDsInitializeObjects 249 * 250 * PARAMETERS: None 251 * 252 * RETURN: Status 253 * 254 * DESCRIPTION: Walk the entire namespace and perform any necessary 255 * initialization on the objects found therein 256 * 257 ******************************************************************************/ 258 259ACPI_STATUS 260AcpiDsInitializeObjects ( 261 ACPI_TABLE_DESC *TableDesc, 262 ACPI_NAMESPACE_NODE *StartNode) 263{ 264 ACPI_STATUS Status; 265 ACPI_INIT_WALK_INFO Info; 266 267 268 FUNCTION_TRACE ("DsInitializeObjects"); 269 270 271 DEBUG_PRINT (TRACE_DISPATCH, 272 ("DsInitializeObjects: **** Starting initialization of namespace objects ****\n")); 273 DEBUG_PRINT_RAW (ACPI_OK, ("Parsing Methods:")); 274 275 276 Info.MethodCount = 0; 277 Info.OpRegionCount = 0; 278 Info.ObjectCount = 0; 279 Info.TableDesc = TableDesc; 280 281 282 /* Walk entire namespace from the supplied root */ 283 284 Status = AcpiWalkNamespace (ACPI_TYPE_ANY, StartNode, 285 ACPI_UINT32_MAX, AcpiDsInitOneObject, 286 &Info, NULL); 287 if (ACPI_FAILURE (Status)) 288 { 289 DEBUG_PRINT (ACPI_ERROR, 290 ("DsInitializeObjects: WalkNamespace failed! %x\n", Status)); 291 } 292 293 DEBUG_PRINT_RAW (ACPI_OK, 294 ("\n%d Control Methods found and parsed (%d nodes total)\n", 295 Info.MethodCount, Info.ObjectCount)); 296 DEBUG_PRINT (TRACE_DISPATCH, 297 ("DsInitializeObjects: %d Control Methods found\n", Info.MethodCount)); 298 DEBUG_PRINT (TRACE_DISPATCH, 299 ("DsInitializeObjects: %d Op Regions found\n", Info.OpRegionCount)); 300 301 return_ACPI_STATUS (AE_OK); 302} 303 304 305/***************************************************************************** 306 * 307 * FUNCTION: AcpiDsInitObjectFromOp 308 * 309 * PARAMETERS: Op - Parser op used to init the internal object 310 * Opcode - AML opcode associated with the object 311 * ObjDesc - Namespace object to be initialized 312 * 313 * RETURN: Status 314 * 315 * DESCRIPTION: Initialize a namespace object from a parser Op and its 316 * associated arguments. The namespace object is a more compact 317 * representation of the Op and its arguments. 318 * 319 ****************************************************************************/ 320 321ACPI_STATUS 322AcpiDsInitObjectFromOp ( 323 ACPI_WALK_STATE *WalkState, 324 ACPI_PARSE_OBJECT *Op, 325 UINT16 Opcode, 326 ACPI_OPERAND_OBJECT **ObjDesc) 327{ 328 ACPI_STATUS Status; 329 ACPI_PARSE_OBJECT *Arg; 330 ACPI_PARSE2_OBJECT *ByteList; 331 ACPI_OPERAND_OBJECT *ArgDesc; 332 ACPI_OPCODE_INFO *OpInfo; 333 334 335 OpInfo = AcpiPsGetOpcodeInfo (Opcode); 336 if (ACPI_GET_OP_TYPE (OpInfo) != ACPI_OP_TYPE_OPCODE) 337 { 338 /* Unknown opcode */ 339 340 return (AE_TYPE); 341 } 342 343 344 /* Get and prepare the first argument */ 345 346 switch ((*ObjDesc)->Common.Type) 347 { 348 case ACPI_TYPE_BUFFER: 349 350 /* First arg is a number */ 351 352 AcpiDsCreateOperand (WalkState, Op->Value.Arg, 0); 353 ArgDesc = WalkState->Operands [WalkState->NumOperands - 1]; 354 AcpiDsObjStackPop (1, WalkState); 355 356 /* Resolve the object (could be an arg or local) */ 357 358 Status = AcpiAmlResolveToValue (&ArgDesc, WalkState); 359 if (ACPI_FAILURE (Status)) 360 { 361 AcpiCmRemoveReference (ArgDesc); 362 return (Status); 363 } 364 365 /* We are expecting a number */ 366 367 if (ArgDesc->Common.Type != ACPI_TYPE_INTEGER) 368 { 369 DEBUG_PRINT (ACPI_ERROR, 370 ("InitObject: Expecting number, got obj: %p type %X\n", 371 ArgDesc, ArgDesc->Common.Type)); 372 AcpiCmRemoveReference (ArgDesc); 373 return (AE_TYPE); 374 } 375 376 /* Get the value, delete the internal object */ 377 378 (*ObjDesc)->Buffer.Length = (UINT32) ArgDesc->Integer.Value; 379 AcpiCmRemoveReference (ArgDesc); 380 381 /* Allocate the buffer */ 382 383 if ((*ObjDesc)->Buffer.Length == 0) 384 { 385 (*ObjDesc)->Buffer.Pointer = NULL; 386 REPORT_WARNING (("Buffer created with zero length in AML\n")); 387 break; 388 } 389 390 else 391 { 392 (*ObjDesc)->Buffer.Pointer = 393 AcpiCmCallocate ((*ObjDesc)->Buffer.Length); 394 395 if (!(*ObjDesc)->Buffer.Pointer) 396 { 397 return (AE_NO_MEMORY); 398 } 399 } 400 401 /* 402 * Second arg is the buffer data (optional) 403 * ByteList can be either individual bytes or a 404 * string initializer! 405 */ 406 407 /* skip first arg */ 408 Arg = Op->Value.Arg; 409 ByteList = (ACPI_PARSE2_OBJECT *) Arg->Next; 410 if (ByteList) 411 { 412 if (ByteList->Opcode != AML_BYTELIST_OP) 413 { 414 DEBUG_PRINT (ACPI_ERROR, 415 ("InitObject: Expecting bytelist, got: %x\n", 416 ByteList)); 417 return (AE_TYPE); 418 } 419 420 MEMCPY ((*ObjDesc)->Buffer.Pointer, ByteList->Data, 421 (*ObjDesc)->Buffer.Length); 422 } 423 424 break; 425 426 427 case ACPI_TYPE_PACKAGE: 428 429 /* 430 * When called, an internal package object has already 431 * been built and is pointed to by *ObjDesc. 432 * AcpiDsBuildInternalObject build another internal 433 * package object, so remove reference to the original 434 * so that it is deleted. Error checking is done 435 * within the remove reference function. 436 */ 437 AcpiCmRemoveReference(*ObjDesc); 438 439 Status = AcpiDsBuildInternalObject (WalkState, Op, ObjDesc); 440 break; 441 442 case ACPI_TYPE_INTEGER: 443 (*ObjDesc)->Integer.Value = Op->Value.Integer; 444 break; 445 446 447 case ACPI_TYPE_STRING: 448 (*ObjDesc)->String.Pointer = Op->Value.String; 449 (*ObjDesc)->String.Length = STRLEN (Op->Value.String); 450 break; 451 452 453 case ACPI_TYPE_METHOD: 454 break; 455 456 457 case INTERNAL_TYPE_REFERENCE: 458 459 switch (ACPI_GET_OP_CLASS (OpInfo)) 460 { 461 case OPTYPE_LOCAL_VARIABLE: 462 463 /* Split the opcode into a base opcode + offset */ 464 465 (*ObjDesc)->Reference.OpCode = AML_LOCAL_OP; 466 (*ObjDesc)->Reference.Offset = Opcode - AML_LOCAL_OP; 467 break; 468 469 case OPTYPE_METHOD_ARGUMENT: 470 471 /* Split the opcode into a base opcode + offset */ 472 473 (*ObjDesc)->Reference.OpCode = AML_ARG_OP; 474 (*ObjDesc)->Reference.Offset = Opcode - AML_ARG_OP; 475 break; 476 477 default: /* Constants, Literals, etc.. */ 478 479 if (Op->Opcode == AML_NAMEPATH_OP) 480 { 481 /* Node was saved in Op */ 482 483 (*ObjDesc)->Reference.Node = Op->Node; 484 } 485 486 (*ObjDesc)->Reference.OpCode = Opcode; 487 break; 488 } 489 490 break; 491 492 493 default: 494 495 DEBUG_PRINT (ACPI_ERROR, 496 ("InitObject: Unimplemented data type: %x\n", 497 (*ObjDesc)->Common.Type)); 498 499 break; 500 } 501 502 return (AE_OK); 503} 504 505 506/***************************************************************************** 507 * 508 * FUNCTION: AcpiDsBuildInternalSimpleObj 509 * 510 * PARAMETERS: Op - Parser object to be translated 511 * ObjDescPtr - Where the ACPI internal object is returned 512 * 513 * RETURN: Status 514 * 515 * DESCRIPTION: Translate a parser Op object to the equivalent namespace object 516 * Simple objects are any objects other than a package object! 517 * 518 ****************************************************************************/ 519 520static ACPI_STATUS 521AcpiDsBuildInternalSimpleObj ( 522 ACPI_WALK_STATE *WalkState, 523 ACPI_PARSE_OBJECT *Op, 524 ACPI_OPERAND_OBJECT **ObjDescPtr) 525{ 526 ACPI_OPERAND_OBJECT *ObjDesc; 527 OBJECT_TYPE_INTERNAL Type; 528 ACPI_STATUS Status; 529 UINT32 Length; 530 char *Name; 531 532 533 FUNCTION_TRACE ("DsBuildInternalSimpleObj"); 534 535 536 if (Op->Opcode == AML_NAMEPATH_OP) 537 { 538 /* 539 * This is an object reference. If The name was 540 * previously looked up in the NS, it is stored in this op. 541 * Otherwise, go ahead and look it up now 542 */ 543 544 if (!Op->Node) 545 { 546 Status = AcpiNsLookup (WalkState->ScopeInfo, 547 Op->Value.String, ACPI_TYPE_ANY, 548 IMODE_EXECUTE, 549 NS_SEARCH_PARENT | NS_DONT_OPEN_SCOPE, 550 NULL, 551 (ACPI_NAMESPACE_NODE **)&(Op->Node)); 552 553 if (ACPI_FAILURE (Status)) 554 { 555 if (Status == AE_NOT_FOUND) 556 { 557 Name = NULL; 558 AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Value.String, &Length, &Name); 559 560 if (Name) 561 { 562 REPORT_WARNING (("Reference %s at AML %X not found\n", 563 Name, Op->AmlOffset)); 564 AcpiCmFree (Name); 565 } 566 else 567 { 568 REPORT_WARNING (("Reference %s at AML %X not found\n", 569 Op->Value.String, Op->AmlOffset)); 570 } 571 *ObjDescPtr = NULL; 572 } 573 574 else 575 { 576 return_ACPI_STATUS (Status); 577 } 578 } 579 } 580 581 /* 582 * The reference will be a Reference 583 * TBD: [Restructure] unless we really need a separate 584 * type of INTERNAL_TYPE_REFERENCE change 585 * AcpiDsMapOpcodeToDataType to handle this case 586 */ 587 Type = INTERNAL_TYPE_REFERENCE; 588 } 589 else 590 { 591 Type = AcpiDsMapOpcodeToDataType (Op->Opcode, NULL); 592 } 593 594 595 /* Create and init the internal ACPI object */ 596 597 ObjDesc = AcpiCmCreateInternalObject (Type); 598 if (!ObjDesc) 599 { 600 return_ACPI_STATUS (AE_NO_MEMORY); 601 } 602 603 Status = AcpiDsInitObjectFromOp (WalkState, Op, 604 Op->Opcode, &ObjDesc); 605 606 if (ACPI_FAILURE (Status)) 607 { 608 AcpiCmRemoveReference (ObjDesc); 609 return_ACPI_STATUS (Status); 610 } 611 612 *ObjDescPtr = ObjDesc; 613 614 return_ACPI_STATUS (AE_OK); 615} 616 617 618/***************************************************************************** 619 * 620 * FUNCTION: AcpiDsBuildInternalPackageObj 621 * 622 * PARAMETERS: Op - Parser object to be translated 623 * ObjDescPtr - Where the ACPI internal object is returned 624 * 625 * RETURN: Status 626 * 627 * DESCRIPTION: Translate a parser Op package object to the equivalent 628 * namespace object 629 * 630 ****************************************************************************/ 631 632ACPI_STATUS 633AcpiDsBuildInternalPackageObj ( 634 ACPI_WALK_STATE *WalkState, 635 ACPI_PARSE_OBJECT *Op, 636 ACPI_OPERAND_OBJECT **ObjDescPtr) 637{ 638 ACPI_PARSE_OBJECT *Arg; 639 ACPI_OPERAND_OBJECT *ObjDesc; 640 ACPI_STATUS Status = AE_OK; 641 642 643 FUNCTION_TRACE ("DsBuildInternalPackageObj"); 644 645 646 ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_PACKAGE); 647 if (!ObjDesc) 648 { 649 return_ACPI_STATUS (AE_NO_MEMORY); 650 } 651 652 /* The first argument must be the package length */ 653 654 Arg = Op->Value.Arg; 655 ObjDesc->Package.Count = Arg->Value.Integer; 656 657 /* 658 * Allocate the array of pointers (ptrs to the 659 * individual objects) Add an extra pointer slot so 660 * that the list is always null terminated. 661 */ 662 663 ObjDesc->Package.Elements = 664 AcpiCmCallocate ((ObjDesc->Package.Count + 1) * 665 sizeof (void *)); 666 667 if (!ObjDesc->Package.Elements) 668 { 669 /* Package vector allocation failure */ 670 671 REPORT_ERROR (("DsBuildInternalPackageObj: Package vector allocation failure\n")); 672 673 AcpiCmDeleteObjectDesc (ObjDesc); 674 return_ACPI_STATUS (AE_NO_MEMORY); 675 } 676 677 ObjDesc->Package.NextElement = ObjDesc->Package.Elements; 678 679 /* 680 * Now init the elements of the package 681 */ 682 683 Arg = Arg->Next; 684 while (Arg) 685 { 686 if (Arg->Opcode == AML_PACKAGE_OP) 687 { 688 Status = AcpiDsBuildInternalPackageObj (WalkState, Arg, 689 ObjDesc->Package.NextElement); 690 } 691 692 else 693 { 694 Status = AcpiDsBuildInternalSimpleObj (WalkState, Arg, 695 ObjDesc->Package.NextElement); 696 } 697 698 ObjDesc->Package.NextElement++; 699 Arg = Arg->Next; 700 } 701 702 *ObjDescPtr = ObjDesc; 703 return_ACPI_STATUS (Status); 704} 705 706 707/***************************************************************************** 708 * 709 * FUNCTION: AcpiDsBuildInternalObject 710 * 711 * PARAMETERS: Op - Parser object to be translated 712 * ObjDescPtr - Where the ACPI internal object is returned 713 * 714 * RETURN: Status 715 * 716 * DESCRIPTION: Translate a parser Op object to the equivalent namespace 717 * object 718 * 719 ****************************************************************************/ 720 721ACPI_STATUS 722AcpiDsBuildInternalObject ( 723 ACPI_WALK_STATE *WalkState, 724 ACPI_PARSE_OBJECT *Op, 725 ACPI_OPERAND_OBJECT **ObjDescPtr) 726{ 727 ACPI_STATUS Status; 728 729 730 if (Op->Opcode == AML_PACKAGE_OP) 731 { 732 Status = AcpiDsBuildInternalPackageObj (WalkState, Op, 733 ObjDescPtr); 734 } 735 736 else 737 { 738 Status = AcpiDsBuildInternalSimpleObj (WalkState, Op, 739 ObjDescPtr); 740 } 741 742 return (Status); 743} 744 745 746/***************************************************************************** 747 * 748 * FUNCTION: AcpiDsCreateNode 749 * 750 * PARAMETERS: Op - Parser object to be translated 751 * ObjDescPtr - Where the ACPI internal object is returned 752 * 753 * RETURN: Status 754 * 755 * DESCRIPTION: 756 * 757 ****************************************************************************/ 758 759ACPI_STATUS 760AcpiDsCreateNode ( 761 ACPI_WALK_STATE *WalkState, 762 ACPI_NAMESPACE_NODE *Node, 763 ACPI_PARSE_OBJECT *Op) 764{ 765 ACPI_STATUS Status; 766 ACPI_OPERAND_OBJECT *ObjDesc; 767 768 769 FUNCTION_TRACE_PTR ("DsCreateNode", Op); 770 771 772 if (!Op->Value.Arg) 773 { 774 /* No arguments, there is nothing to do */ 775 776 return_ACPI_STATUS (AE_OK); 777 } 778 779 780 /* Build an internal object for the argument(s) */ 781 782 Status = AcpiDsBuildInternalObject (WalkState, 783 Op->Value.Arg, &ObjDesc); 784 if (ACPI_FAILURE (Status)) 785 { 786 return_ACPI_STATUS (Status); 787 } 788 789 790 /* Re-type the object according to it's argument */ 791 792 Node->Type = ObjDesc->Common.Type; 793 794 /* Init obj */ 795 796 Status = AcpiNsAttachObject ((ACPI_HANDLE) Node, ObjDesc, 797 (UINT8) Node->Type); 798 if (ACPI_FAILURE (Status)) 799 { 800 goto Cleanup; 801 } 802 803 return_ACPI_STATUS (Status); 804 805 806Cleanup: 807 808 AcpiCmRemoveReference (ObjDesc); 809 810 return_ACPI_STATUS (Status); 811} 812 813 814