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 __DSWLOAD_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#include "acevents.h" 126 127 128#define _COMPONENT ACPI_DISPATCHER 129 ACPI_MODULE_NAME ("dswload") 130 131 132/******************************************************************************* 133 * 134 * FUNCTION: AcpiDsInitCallbacks 135 * 136 * PARAMETERS: WalkState - Current state of the parse tree walk 137 * PassNumber - 1, 2, or 3 138 * 139 * RETURN: Status 140 * 141 * DESCRIPTION: Init walk state callbacks 142 * 143 ******************************************************************************/ 144 145ACPI_STATUS 146AcpiDsInitCallbacks ( 147 ACPI_WALK_STATE *WalkState, 148 UINT32 PassNumber) 149{ 150 151 switch (PassNumber) 152 { 153 case 1: 154 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE; 155 WalkState->DescendingCallback = AcpiDsLoad1BeginOp; 156 WalkState->AscendingCallback = AcpiDsLoad1EndOp; 157 break; 158 159 case 2: 160 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE; 161 WalkState->DescendingCallback = AcpiDsLoad2BeginOp; 162 WalkState->AscendingCallback = AcpiDsLoad2EndOp; 163 break; 164 165 case 3: 166#ifndef ACPI_NO_METHOD_EXECUTION 167 WalkState->ParseFlags |= ACPI_PARSE_EXECUTE | ACPI_PARSE_DELETE_TREE; 168 WalkState->DescendingCallback = AcpiDsExecBeginOp; 169 WalkState->AscendingCallback = AcpiDsExecEndOp; 170#endif 171 break; 172 173 default: 174 return (AE_BAD_PARAMETER); 175 } 176 177 return (AE_OK); 178} 179 180 181/******************************************************************************* 182 * 183 * FUNCTION: AcpiDsLoad1BeginOp 184 * 185 * PARAMETERS: WalkState - Current state of the parse tree walk 186 * Op - Op that has been just been reached in the 187 * walk; Arguments have not been evaluated yet. 188 * 189 * RETURN: Status 190 * 191 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 192 * 193 ******************************************************************************/ 194 195ACPI_STATUS 196AcpiDsLoad1BeginOp ( 197 ACPI_WALK_STATE *WalkState, 198 ACPI_PARSE_OBJECT **OutOp) 199{ 200 ACPI_PARSE_OBJECT *Op; 201 ACPI_NAMESPACE_NODE *Node; 202 ACPI_STATUS Status; 203 ACPI_OBJECT_TYPE ObjectType; 204 char *Path; 205 UINT32 Flags; 206 207 208 ACPI_FUNCTION_NAME ("DsLoad1BeginOp"); 209 210 211 Op = WalkState->Op; 212 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 213 214 /* We are only interested in opcodes that have an associated name */ 215 216 if (Op) 217 { 218 if (!(WalkState->OpInfo->Flags & AML_NAMED)) 219 { 220#if 0 221 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) || 222 (WalkState->OpInfo->Class == AML_CLASS_CONTROL)) 223 { 224 AcpiOsPrintf ("\n\n***EXECUTABLE OPCODE %s***\n\n", WalkState->OpInfo->Name); 225 *OutOp = Op; 226 return (AE_CTRL_SKIP); 227 } 228#endif 229 *OutOp = Op; 230 return (AE_OK); 231 } 232 233 /* Check if this object has already been installed in the namespace */ 234 235 if (Op->Common.Node) 236 { 237 *OutOp = Op; 238 return (AE_OK); 239 } 240 } 241 242 Path = AcpiPsGetNextNamestring (&WalkState->ParserState); 243 244 /* Map the raw opcode into an internal object type */ 245 246 ObjectType = WalkState->OpInfo->ObjectType; 247 248 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 249 "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType))); 250 251 switch (WalkState->Opcode) 252 { 253 case AML_SCOPE_OP: 254 255 /* 256 * The target name of the Scope() operator must exist at this point so 257 * that we can actually open the scope to enter new names underneath it. 258 * Allow search-to-root for single namesegs. 259 */ 260 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 261 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 262 if (ACPI_FAILURE (Status)) 263 { 264 ACPI_REPORT_NSERROR (Path, Status); 265 return (Status); 266 } 267 268 /* 269 * Check to make sure that the target is 270 * one of the opcodes that actually opens a scope 271 */ 272 switch (Node->Type) 273 { 274 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 275 case ACPI_TYPE_DEVICE: 276 case ACPI_TYPE_POWER: 277 case ACPI_TYPE_PROCESSOR: 278 case ACPI_TYPE_THERMAL: 279 280 /* These are acceptable types */ 281 break; 282 283 case ACPI_TYPE_INTEGER: 284 case ACPI_TYPE_STRING: 285 case ACPI_TYPE_BUFFER: 286 287 /* 288 * These types we will allow, but we will change the type. This 289 * enables some existing code of the form: 290 * 291 * Name (DEB, 0) 292 * Scope (DEB) { ... } 293 * 294 * Note: silently change the type here. On the second pass, we will report a warning 295 */ 296 297 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", 298 Path, AcpiUtGetTypeName (Node->Type))); 299 300 Node->Type = ACPI_TYPE_ANY; 301 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 302 break; 303 304 default: 305 306 /* All other types are an error */ 307 308 ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", 309 AcpiUtGetTypeName (Node->Type), Path)); 310 311 return (AE_AML_OPERAND_TYPE); 312 } 313 break; 314 315 316 default: 317 318 /* 319 * For all other named opcodes, we will enter the name into the namespace. 320 * 321 * Setup the search flags. 322 * Since we are entering a name into the namespace, we do not want to 323 * enable the search-to-root upsearch. 324 * 325 * There are only two conditions where it is acceptable that the name 326 * already exists: 327 * 1) the Scope() operator can reopen a scoping object that was 328 * previously defined (Scope, Method, Device, etc.) 329 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer, 330 * BufferField, or Package), the name of the object is already 331 * in the namespace. 332 */ 333 if (WalkState->DeferredNode) 334 { 335 /* This name is already in the namespace, get the node */ 336 337 Node = WalkState->DeferredNode; 338 Status = AE_OK; 339 break; 340 } 341 342 Flags = ACPI_NS_NO_UPSEARCH; 343 if ((WalkState->Opcode != AML_SCOPE_OP) && 344 (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP))) 345 { 346 Flags |= ACPI_NS_ERROR_IF_FOUND; 347 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", 348 AcpiUtGetTypeName (ObjectType))); 349 } 350 else 351 { 352 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Both Find or Create allowed\n", 353 AcpiUtGetTypeName (ObjectType))); 354 } 355 356 /* 357 * Enter the named type into the internal namespace. We enter the name 358 * as we go downward in the parse tree. Any necessary subobjects that involve 359 * arguments to the opcode must be created as we go back up the parse tree later. 360 */ 361 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 362 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node)); 363 if (ACPI_FAILURE (Status)) 364 { 365 ACPI_REPORT_NSERROR (Path, Status); 366 return (Status); 367 } 368 break; 369 } 370 371 372 /* Common exit */ 373 374 if (!Op) 375 { 376 /* Create a new op */ 377 378 Op = AcpiPsAllocOp (WalkState->Opcode); 379 if (!Op) 380 { 381 return (AE_NO_MEMORY); 382 } 383 } 384 385 /* Initialize */ 386 387 Op->Named.Name = Node->Name.Integer; 388 389#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) 390 Op->Named.Path = (UINT8 *) Path; 391#endif 392 393 394 /* 395 * Put the Node in the "op" object that the parser uses, so we 396 * can get it again quickly when this scope is closed 397 */ 398 Op->Common.Node = Node; 399 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op); 400 401 *OutOp = Op; 402 return (Status); 403} 404 405 406/******************************************************************************* 407 * 408 * FUNCTION: AcpiDsLoad1EndOp 409 * 410 * PARAMETERS: WalkState - Current state of the parse tree walk 411 * Op - Op that has been just been completed in the 412 * walk; Arguments have now been evaluated. 413 * 414 * RETURN: Status 415 * 416 * DESCRIPTION: Ascending callback used during the loading of the namespace, 417 * both control methods and everything else. 418 * 419 ******************************************************************************/ 420 421ACPI_STATUS 422AcpiDsLoad1EndOp ( 423 ACPI_WALK_STATE *WalkState) 424{ 425 ACPI_PARSE_OBJECT *Op; 426 ACPI_OBJECT_TYPE ObjectType; 427 ACPI_STATUS Status = AE_OK; 428 429 430 ACPI_FUNCTION_NAME ("DsLoad1EndOp"); 431 432 433 Op = WalkState->Op; 434 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 435 436 /* We are only interested in opcodes that have an associated name */ 437 438 if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD))) 439 { 440 return (AE_OK); 441 } 442 443 /* Get the object type to determine if we should pop the scope */ 444 445 ObjectType = WalkState->OpInfo->ObjectType; 446 447#ifndef ACPI_NO_METHOD_EXECUTION 448 if (WalkState->OpInfo->Flags & AML_FIELD) 449 { 450 if (WalkState->Opcode == AML_FIELD_OP || 451 WalkState->Opcode == AML_BANK_FIELD_OP || 452 WalkState->Opcode == AML_INDEX_FIELD_OP) 453 { 454 Status = AcpiDsInitFieldObjects (Op, WalkState); 455 } 456 return (Status); 457 } 458 459 460 if (Op->Common.AmlOpcode == AML_REGION_OP) 461 { 462 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 463 (ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer), WalkState); 464 if (ACPI_FAILURE (Status)) 465 { 466 return (Status); 467 } 468 } 469#endif 470 471 if (Op->Common.AmlOpcode == AML_NAME_OP) 472 { 473 /* For Name opcode, get the object type from the argument */ 474 475 if (Op->Common.Value.Arg) 476 { 477 ObjectType = (AcpiPsGetOpcodeInfo ((Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType; 478 Op->Common.Node->Type = (UINT8) ObjectType; 479 } 480 } 481 482 if (Op->Common.AmlOpcode == AML_METHOD_OP) 483 { 484 /* 485 * MethodOp PkgLength NameString MethodFlags TermList 486 * 487 * Note: We must create the method node/object pair as soon as we 488 * see the method declaration. This allows later pass1 parsing 489 * of invocations of the method (need to know the number of 490 * arguments.) 491 */ 492 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 493 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 494 WalkState, Op, Op->Named.Node)); 495 496 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 497 { 498 WalkState->Operands[0] = (void *) Op->Named.Node; 499 WalkState->NumOperands = 1; 500 501 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 502 if (ACPI_SUCCESS (Status)) 503 { 504 Status = AcpiExCreateMethod (Op->Named.Data, 505 Op->Named.Length, WalkState); 506 } 507 WalkState->Operands[0] = NULL; 508 WalkState->NumOperands = 0; 509 510 if (ACPI_FAILURE (Status)) 511 { 512 return (Status); 513 } 514 } 515 } 516 517 /* Pop the scope stack */ 518 519 if (AcpiNsOpensScope (ObjectType)) 520 { 521 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", 522 AcpiUtGetTypeName (ObjectType), Op)); 523 524 Status = AcpiDsScopeStackPop (WalkState); 525 } 526 527 return (Status); 528} 529 530 531/******************************************************************************* 532 * 533 * FUNCTION: AcpiDsLoad2BeginOp 534 * 535 * PARAMETERS: WalkState - Current state of the parse tree walk 536 * Op - Op that has been just been reached in the 537 * walk; Arguments have not been evaluated yet. 538 * 539 * RETURN: Status 540 * 541 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 542 * 543 ******************************************************************************/ 544 545ACPI_STATUS 546AcpiDsLoad2BeginOp ( 547 ACPI_WALK_STATE *WalkState, 548 ACPI_PARSE_OBJECT **OutOp) 549{ 550 ACPI_PARSE_OBJECT *Op; 551 ACPI_NAMESPACE_NODE *Node; 552 ACPI_STATUS Status; 553 ACPI_OBJECT_TYPE ObjectType; 554 char *BufferPtr; 555 556 557 ACPI_FUNCTION_TRACE ("DsLoad2BeginOp"); 558 559 560 Op = WalkState->Op; 561 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 562 563 if (Op) 564 { 565 /* We only care about Namespace opcodes here */ 566 567 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 568 (!(WalkState->OpInfo->Flags & AML_NAMED))) 569 { 570 return_ACPI_STATUS (AE_OK); 571 } 572 573 /* 574 * Get the name we are going to enter or lookup in the namespace 575 */ 576 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 577 { 578 /* For Namepath op, get the path string */ 579 580 BufferPtr = Op->Common.Value.String; 581 if (!BufferPtr) 582 { 583 /* No name, just exit */ 584 585 return_ACPI_STATUS (AE_OK); 586 } 587 } 588 else 589 { 590 /* Get name from the op */ 591 592 BufferPtr = (char *) &Op->Named.Name; 593 } 594 } 595 else 596 { 597 /* Get the namestring from the raw AML */ 598 599 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 600 } 601 602 /* Map the opcode into an internal object type */ 603 604 ObjectType = WalkState->OpInfo->ObjectType; 605 606 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 607 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 608 609 610 switch (WalkState->Opcode) 611 { 612 case AML_FIELD_OP: 613 case AML_BANK_FIELD_OP: 614 case AML_INDEX_FIELD_OP: 615 616 Node = NULL; 617 Status = AE_OK; 618 break; 619 620 case AML_INT_NAMEPATH_OP: 621 622 /* 623 * The NamePath is an object reference to an existing object. Don't enter the 624 * name into the namespace, but look it up for use later 625 */ 626 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 627 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 628 break; 629 630 case AML_SCOPE_OP: 631 632 /* 633 * The Path is an object reference to an existing object. Don't enter the 634 * name into the namespace, but look it up for use later 635 */ 636 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 637 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 638 if (ACPI_FAILURE (Status)) 639 { 640 ACPI_REPORT_NSERROR (BufferPtr, Status); 641 return_ACPI_STATUS (Status); 642 } 643 /* 644 * We must check to make sure that the target is 645 * one of the opcodes that actually opens a scope 646 */ 647 switch (Node->Type) 648 { 649 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 650 case ACPI_TYPE_DEVICE: 651 case ACPI_TYPE_POWER: 652 case ACPI_TYPE_PROCESSOR: 653 case ACPI_TYPE_THERMAL: 654 655 /* These are acceptable types */ 656 break; 657 658 case ACPI_TYPE_INTEGER: 659 case ACPI_TYPE_STRING: 660 case ACPI_TYPE_BUFFER: 661 662 /* 663 * These types we will allow, but we will change the type. This 664 * enables some existing code of the form: 665 * 666 * Name (DEB, 0) 667 * Scope (DEB) { ... } 668 */ 669 670 ACPI_REPORT_WARNING (("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", 671 BufferPtr, AcpiUtGetTypeName (Node->Type))); 672 673 Node->Type = ACPI_TYPE_ANY; 674 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 675 break; 676 677 default: 678 679 /* All other types are an error */ 680 681 ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s]\n", 682 AcpiUtGetTypeName (Node->Type), BufferPtr)); 683 684 return (AE_AML_OPERAND_TYPE); 685 } 686 break; 687 688 default: 689 690 /* All other opcodes */ 691 692 if (Op && Op->Common.Node) 693 { 694 /* This op/node was previously entered into the namespace */ 695 696 Node = Op->Common.Node; 697 698 if (AcpiNsOpensScope (ObjectType)) 699 { 700 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 701 if (ACPI_FAILURE (Status)) 702 { 703 return_ACPI_STATUS (Status); 704 } 705 706 } 707 return_ACPI_STATUS (AE_OK); 708 } 709 710 /* 711 * Enter the named type into the internal namespace. We enter the name 712 * as we go downward in the parse tree. Any necessary subobjects that involve 713 * arguments to the opcode must be created as we go back up the parse tree later. 714 * 715 * Note: Name may already exist if we are executing a deferred opcode. 716 */ 717 if (WalkState->DeferredNode) 718 { 719 /* This name is already in the namespace, get the node */ 720 721 Node = WalkState->DeferredNode; 722 Status = AE_OK; 723 break; 724 } 725 726 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 727 ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, WalkState, &(Node)); 728 break; 729 } 730 731 if (ACPI_FAILURE (Status)) 732 { 733 ACPI_REPORT_NSERROR (BufferPtr, Status); 734 return_ACPI_STATUS (Status); 735 } 736 737 738 if (!Op) 739 { 740 /* Create a new op */ 741 742 Op = AcpiPsAllocOp (WalkState->Opcode); 743 if (!Op) 744 { 745 return_ACPI_STATUS (AE_NO_MEMORY); 746 } 747 748 /* Initialize the new op */ 749 750 if (Node) 751 { 752 Op->Named.Name = Node->Name.Integer; 753 } 754 if (OutOp) 755 { 756 *OutOp = Op; 757 } 758 } 759 760 /* 761 * Put the Node in the "op" object that the parser uses, so we 762 * can get it again quickly when this scope is closed 763 */ 764 Op->Common.Node = Node; 765 766 return_ACPI_STATUS (Status); 767} 768 769 770/******************************************************************************* 771 * 772 * FUNCTION: AcpiDsLoad2EndOp 773 * 774 * PARAMETERS: WalkState - Current state of the parse tree walk 775 * Op - Op that has been just been completed in the 776 * walk; Arguments have now been evaluated. 777 * 778 * RETURN: Status 779 * 780 * DESCRIPTION: Ascending callback used during the loading of the namespace, 781 * both control methods and everything else. 782 * 783 ******************************************************************************/ 784 785ACPI_STATUS 786AcpiDsLoad2EndOp ( 787 ACPI_WALK_STATE *WalkState) 788{ 789 ACPI_PARSE_OBJECT *Op; 790 ACPI_STATUS Status = AE_OK; 791 ACPI_OBJECT_TYPE ObjectType; 792 ACPI_NAMESPACE_NODE *Node; 793 ACPI_PARSE_OBJECT *Arg; 794 ACPI_NAMESPACE_NODE *NewNode; 795#ifndef ACPI_NO_METHOD_EXECUTION 796 UINT32 i; 797#endif 798 799 800 ACPI_FUNCTION_TRACE ("DsLoad2EndOp"); 801 802 Op = WalkState->Op; 803 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 804 WalkState->OpInfo->Name, Op, WalkState)); 805 806 /* Only interested in opcodes that have namespace objects */ 807 808 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 809 { 810 return_ACPI_STATUS (AE_OK); 811 } 812 813 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 814 { 815 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 816 "Ending scope Op=%p State=%p\n", Op, WalkState)); 817 } 818 819 820 ObjectType = WalkState->OpInfo->ObjectType; 821 822 /* 823 * Get the Node/name from the earlier lookup 824 * (It was saved in the *op structure) 825 */ 826 Node = Op->Common.Node; 827 828 /* 829 * Put the Node on the object stack (Contains the ACPI Name of 830 * this object) 831 */ 832 WalkState->Operands[0] = (void *) Node; 833 WalkState->NumOperands = 1; 834 835 /* Pop the scope stack */ 836 837 if (AcpiNsOpensScope (ObjectType) && (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 838 { 839 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 840 AcpiUtGetTypeName (ObjectType), Op)); 841 842 Status = AcpiDsScopeStackPop (WalkState); 843 if (ACPI_FAILURE (Status)) 844 { 845 goto Cleanup; 846 } 847 } 848 849 /* 850 * Named operations are as follows: 851 * 852 * AML_ALIAS 853 * AML_BANKFIELD 854 * AML_CREATEBITFIELD 855 * AML_CREATEBYTEFIELD 856 * AML_CREATEDWORDFIELD 857 * AML_CREATEFIELD 858 * AML_CREATEQWORDFIELD 859 * AML_CREATEWORDFIELD 860 * AML_DATA_REGION 861 * AML_DEVICE 862 * AML_EVENT 863 * AML_FIELD 864 * AML_INDEXFIELD 865 * AML_METHOD 866 * AML_METHODCALL 867 * AML_MUTEX 868 * AML_NAME 869 * AML_NAMEDFIELD 870 * AML_OPREGION 871 * AML_POWERRES 872 * AML_PROCESSOR 873 * AML_SCOPE 874 * AML_THERMALZONE 875 */ 876 877 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 878 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 879 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 880 881 /* Decode the opcode */ 882 883 Arg = Op->Common.Value.Arg; 884 885 switch (WalkState->OpInfo->Type) 886 { 887#ifndef ACPI_NO_METHOD_EXECUTION 888 889 case AML_TYPE_CREATE_FIELD: 890 891 /* 892 * Create the field object, but the field buffer and index must 893 * be evaluated later during the execution phase 894 */ 895 Status = AcpiDsCreateBufferField (Op, WalkState); 896 break; 897 898 899 case AML_TYPE_NAMED_FIELD: 900 901 switch (Op->Common.AmlOpcode) 902 { 903 case AML_INDEX_FIELD_OP: 904 905 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 906 WalkState); 907 break; 908 909 case AML_BANK_FIELD_OP: 910 911 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 912 break; 913 914 case AML_FIELD_OP: 915 916 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 917 break; 918 919 default: 920 /* All NAMED_FIELD opcodes must be handled above */ 921 break; 922 } 923 break; 924 925 926 case AML_TYPE_NAMED_SIMPLE: 927 928 Status = AcpiDsCreateOperands (WalkState, Arg); 929 if (ACPI_FAILURE (Status)) 930 { 931 goto Cleanup; 932 } 933 934 switch (Op->Common.AmlOpcode) 935 { 936 case AML_PROCESSOR_OP: 937 938 Status = AcpiExCreateProcessor (WalkState); 939 break; 940 941 case AML_POWER_RES_OP: 942 943 Status = AcpiExCreatePowerResource (WalkState); 944 break; 945 946 case AML_MUTEX_OP: 947 948 Status = AcpiExCreateMutex (WalkState); 949 break; 950 951 case AML_EVENT_OP: 952 953 Status = AcpiExCreateEvent (WalkState); 954 break; 955 956 case AML_DATA_REGION_OP: 957 958 Status = AcpiExCreateTableRegion (WalkState); 959 break; 960 961 case AML_ALIAS_OP: 962 963 Status = AcpiExCreateAlias (WalkState); 964 break; 965 966 default: 967 /* Unknown opcode */ 968 969 Status = AE_OK; 970 goto Cleanup; 971 } 972 973 /* Delete operands */ 974 975 for (i = 1; i < WalkState->NumOperands; i++) 976 { 977 AcpiUtRemoveReference (WalkState->Operands[i]); 978 WalkState->Operands[i] = NULL; 979 } 980 981 break; 982#endif /* ACPI_NO_METHOD_EXECUTION */ 983 984 case AML_TYPE_NAMED_COMPLEX: 985 986 switch (Op->Common.AmlOpcode) 987 { 988#ifndef ACPI_NO_METHOD_EXECUTION 989 case AML_REGION_OP: 990 /* 991 * The OpRegion is not fully parsed at this time. Only valid argument is the SpaceId. 992 * (We must save the address of the AML of the address and length operands) 993 */ 994 /* 995 * If we have a valid region, initialize it 996 * Namespace is NOT locked at this point. 997 */ 998 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), FALSE); 999 if (ACPI_FAILURE (Status)) 1000 { 1001 /* 1002 * If AE_NOT_EXIST is returned, it is not fatal 1003 * because many regions get created before a handler 1004 * is installed for said region. 1005 */ 1006 if (AE_NOT_EXIST == Status) 1007 { 1008 Status = AE_OK; 1009 } 1010 } 1011 break; 1012 1013 1014 case AML_NAME_OP: 1015 1016 Status = AcpiDsCreateNode (WalkState, Node, Op); 1017 break; 1018#endif /* ACPI_NO_METHOD_EXECUTION */ 1019 1020 1021 default: 1022 /* All NAMED_COMPLEX opcodes must be handled above */ 1023 /* Note: Method objects were already created in Pass 1 */ 1024 break; 1025 } 1026 break; 1027 1028 1029 case AML_CLASS_INTERNAL: 1030 1031 /* case AML_INT_NAMEPATH_OP: */ 1032 break; 1033 1034 1035 case AML_CLASS_METHOD_CALL: 1036 1037 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1038 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", 1039 WalkState, Op, Node)); 1040 1041 /* 1042 * Lookup the method name and save the Node 1043 */ 1044 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 1045 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, 1046 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 1047 WalkState, &(NewNode)); 1048 if (ACPI_SUCCESS (Status)) 1049 { 1050 /* 1051 * Make sure that what we found is indeed a method 1052 * We didn't search for a method on purpose, to see if the name would resolve 1053 */ 1054 if (NewNode->Type != ACPI_TYPE_METHOD) 1055 { 1056 Status = AE_AML_OPERAND_TYPE; 1057 } 1058 1059 /* We could put the returned object (Node) on the object stack for later, but 1060 * for now, we will put it in the "op" object that the parser uses, so we 1061 * can get it again at the end of this scope 1062 */ 1063 Op->Common.Node = NewNode; 1064 } 1065 else 1066 { 1067 ACPI_REPORT_NSERROR (Arg->Common.Value.String, Status); 1068 } 1069 break; 1070 1071 1072 default: 1073 break; 1074 } 1075 1076Cleanup: 1077 1078 /* Remove the Node pushed at the very beginning */ 1079 1080 WalkState->Operands[0] = NULL; 1081 WalkState->NumOperands = 0; 1082 return_ACPI_STATUS (Status); 1083} 1084 1085
| 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 __DSWLOAD_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#include "acevents.h" 126 127 128#define _COMPONENT ACPI_DISPATCHER 129 ACPI_MODULE_NAME ("dswload") 130 131 132/******************************************************************************* 133 * 134 * FUNCTION: AcpiDsInitCallbacks 135 * 136 * PARAMETERS: WalkState - Current state of the parse tree walk 137 * PassNumber - 1, 2, or 3 138 * 139 * RETURN: Status 140 * 141 * DESCRIPTION: Init walk state callbacks 142 * 143 ******************************************************************************/ 144 145ACPI_STATUS 146AcpiDsInitCallbacks ( 147 ACPI_WALK_STATE *WalkState, 148 UINT32 PassNumber) 149{ 150 151 switch (PassNumber) 152 { 153 case 1: 154 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE; 155 WalkState->DescendingCallback = AcpiDsLoad1BeginOp; 156 WalkState->AscendingCallback = AcpiDsLoad1EndOp; 157 break; 158 159 case 2: 160 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE; 161 WalkState->DescendingCallback = AcpiDsLoad2BeginOp; 162 WalkState->AscendingCallback = AcpiDsLoad2EndOp; 163 break; 164 165 case 3: 166#ifndef ACPI_NO_METHOD_EXECUTION 167 WalkState->ParseFlags |= ACPI_PARSE_EXECUTE | ACPI_PARSE_DELETE_TREE; 168 WalkState->DescendingCallback = AcpiDsExecBeginOp; 169 WalkState->AscendingCallback = AcpiDsExecEndOp; 170#endif 171 break; 172 173 default: 174 return (AE_BAD_PARAMETER); 175 } 176 177 return (AE_OK); 178} 179 180 181/******************************************************************************* 182 * 183 * FUNCTION: AcpiDsLoad1BeginOp 184 * 185 * PARAMETERS: WalkState - Current state of the parse tree walk 186 * Op - Op that has been just been reached in the 187 * walk; Arguments have not been evaluated yet. 188 * 189 * RETURN: Status 190 * 191 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 192 * 193 ******************************************************************************/ 194 195ACPI_STATUS 196AcpiDsLoad1BeginOp ( 197 ACPI_WALK_STATE *WalkState, 198 ACPI_PARSE_OBJECT **OutOp) 199{ 200 ACPI_PARSE_OBJECT *Op; 201 ACPI_NAMESPACE_NODE *Node; 202 ACPI_STATUS Status; 203 ACPI_OBJECT_TYPE ObjectType; 204 char *Path; 205 UINT32 Flags; 206 207 208 ACPI_FUNCTION_NAME ("DsLoad1BeginOp"); 209 210 211 Op = WalkState->Op; 212 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 213 214 /* We are only interested in opcodes that have an associated name */ 215 216 if (Op) 217 { 218 if (!(WalkState->OpInfo->Flags & AML_NAMED)) 219 { 220#if 0 221 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) || 222 (WalkState->OpInfo->Class == AML_CLASS_CONTROL)) 223 { 224 AcpiOsPrintf ("\n\n***EXECUTABLE OPCODE %s***\n\n", WalkState->OpInfo->Name); 225 *OutOp = Op; 226 return (AE_CTRL_SKIP); 227 } 228#endif 229 *OutOp = Op; 230 return (AE_OK); 231 } 232 233 /* Check if this object has already been installed in the namespace */ 234 235 if (Op->Common.Node) 236 { 237 *OutOp = Op; 238 return (AE_OK); 239 } 240 } 241 242 Path = AcpiPsGetNextNamestring (&WalkState->ParserState); 243 244 /* Map the raw opcode into an internal object type */ 245 246 ObjectType = WalkState->OpInfo->ObjectType; 247 248 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 249 "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType))); 250 251 switch (WalkState->Opcode) 252 { 253 case AML_SCOPE_OP: 254 255 /* 256 * The target name of the Scope() operator must exist at this point so 257 * that we can actually open the scope to enter new names underneath it. 258 * Allow search-to-root for single namesegs. 259 */ 260 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 261 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 262 if (ACPI_FAILURE (Status)) 263 { 264 ACPI_REPORT_NSERROR (Path, Status); 265 return (Status); 266 } 267 268 /* 269 * Check to make sure that the target is 270 * one of the opcodes that actually opens a scope 271 */ 272 switch (Node->Type) 273 { 274 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 275 case ACPI_TYPE_DEVICE: 276 case ACPI_TYPE_POWER: 277 case ACPI_TYPE_PROCESSOR: 278 case ACPI_TYPE_THERMAL: 279 280 /* These are acceptable types */ 281 break; 282 283 case ACPI_TYPE_INTEGER: 284 case ACPI_TYPE_STRING: 285 case ACPI_TYPE_BUFFER: 286 287 /* 288 * These types we will allow, but we will change the type. This 289 * enables some existing code of the form: 290 * 291 * Name (DEB, 0) 292 * Scope (DEB) { ... } 293 * 294 * Note: silently change the type here. On the second pass, we will report a warning 295 */ 296 297 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", 298 Path, AcpiUtGetTypeName (Node->Type))); 299 300 Node->Type = ACPI_TYPE_ANY; 301 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 302 break; 303 304 default: 305 306 /* All other types are an error */ 307 308 ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", 309 AcpiUtGetTypeName (Node->Type), Path)); 310 311 return (AE_AML_OPERAND_TYPE); 312 } 313 break; 314 315 316 default: 317 318 /* 319 * For all other named opcodes, we will enter the name into the namespace. 320 * 321 * Setup the search flags. 322 * Since we are entering a name into the namespace, we do not want to 323 * enable the search-to-root upsearch. 324 * 325 * There are only two conditions where it is acceptable that the name 326 * already exists: 327 * 1) the Scope() operator can reopen a scoping object that was 328 * previously defined (Scope, Method, Device, etc.) 329 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer, 330 * BufferField, or Package), the name of the object is already 331 * in the namespace. 332 */ 333 if (WalkState->DeferredNode) 334 { 335 /* This name is already in the namespace, get the node */ 336 337 Node = WalkState->DeferredNode; 338 Status = AE_OK; 339 break; 340 } 341 342 Flags = ACPI_NS_NO_UPSEARCH; 343 if ((WalkState->Opcode != AML_SCOPE_OP) && 344 (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP))) 345 { 346 Flags |= ACPI_NS_ERROR_IF_FOUND; 347 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", 348 AcpiUtGetTypeName (ObjectType))); 349 } 350 else 351 { 352 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Both Find or Create allowed\n", 353 AcpiUtGetTypeName (ObjectType))); 354 } 355 356 /* 357 * Enter the named type into the internal namespace. We enter the name 358 * as we go downward in the parse tree. Any necessary subobjects that involve 359 * arguments to the opcode must be created as we go back up the parse tree later. 360 */ 361 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 362 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node)); 363 if (ACPI_FAILURE (Status)) 364 { 365 ACPI_REPORT_NSERROR (Path, Status); 366 return (Status); 367 } 368 break; 369 } 370 371 372 /* Common exit */ 373 374 if (!Op) 375 { 376 /* Create a new op */ 377 378 Op = AcpiPsAllocOp (WalkState->Opcode); 379 if (!Op) 380 { 381 return (AE_NO_MEMORY); 382 } 383 } 384 385 /* Initialize */ 386 387 Op->Named.Name = Node->Name.Integer; 388 389#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) 390 Op->Named.Path = (UINT8 *) Path; 391#endif 392 393 394 /* 395 * Put the Node in the "op" object that the parser uses, so we 396 * can get it again quickly when this scope is closed 397 */ 398 Op->Common.Node = Node; 399 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op); 400 401 *OutOp = Op; 402 return (Status); 403} 404 405 406/******************************************************************************* 407 * 408 * FUNCTION: AcpiDsLoad1EndOp 409 * 410 * PARAMETERS: WalkState - Current state of the parse tree walk 411 * Op - Op that has been just been completed in the 412 * walk; Arguments have now been evaluated. 413 * 414 * RETURN: Status 415 * 416 * DESCRIPTION: Ascending callback used during the loading of the namespace, 417 * both control methods and everything else. 418 * 419 ******************************************************************************/ 420 421ACPI_STATUS 422AcpiDsLoad1EndOp ( 423 ACPI_WALK_STATE *WalkState) 424{ 425 ACPI_PARSE_OBJECT *Op; 426 ACPI_OBJECT_TYPE ObjectType; 427 ACPI_STATUS Status = AE_OK; 428 429 430 ACPI_FUNCTION_NAME ("DsLoad1EndOp"); 431 432 433 Op = WalkState->Op; 434 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 435 436 /* We are only interested in opcodes that have an associated name */ 437 438 if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD))) 439 { 440 return (AE_OK); 441 } 442 443 /* Get the object type to determine if we should pop the scope */ 444 445 ObjectType = WalkState->OpInfo->ObjectType; 446 447#ifndef ACPI_NO_METHOD_EXECUTION 448 if (WalkState->OpInfo->Flags & AML_FIELD) 449 { 450 if (WalkState->Opcode == AML_FIELD_OP || 451 WalkState->Opcode == AML_BANK_FIELD_OP || 452 WalkState->Opcode == AML_INDEX_FIELD_OP) 453 { 454 Status = AcpiDsInitFieldObjects (Op, WalkState); 455 } 456 return (Status); 457 } 458 459 460 if (Op->Common.AmlOpcode == AML_REGION_OP) 461 { 462 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 463 (ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer), WalkState); 464 if (ACPI_FAILURE (Status)) 465 { 466 return (Status); 467 } 468 } 469#endif 470 471 if (Op->Common.AmlOpcode == AML_NAME_OP) 472 { 473 /* For Name opcode, get the object type from the argument */ 474 475 if (Op->Common.Value.Arg) 476 { 477 ObjectType = (AcpiPsGetOpcodeInfo ((Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType; 478 Op->Common.Node->Type = (UINT8) ObjectType; 479 } 480 } 481 482 if (Op->Common.AmlOpcode == AML_METHOD_OP) 483 { 484 /* 485 * MethodOp PkgLength NameString MethodFlags TermList 486 * 487 * Note: We must create the method node/object pair as soon as we 488 * see the method declaration. This allows later pass1 parsing 489 * of invocations of the method (need to know the number of 490 * arguments.) 491 */ 492 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 493 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 494 WalkState, Op, Op->Named.Node)); 495 496 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 497 { 498 WalkState->Operands[0] = (void *) Op->Named.Node; 499 WalkState->NumOperands = 1; 500 501 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 502 if (ACPI_SUCCESS (Status)) 503 { 504 Status = AcpiExCreateMethod (Op->Named.Data, 505 Op->Named.Length, WalkState); 506 } 507 WalkState->Operands[0] = NULL; 508 WalkState->NumOperands = 0; 509 510 if (ACPI_FAILURE (Status)) 511 { 512 return (Status); 513 } 514 } 515 } 516 517 /* Pop the scope stack */ 518 519 if (AcpiNsOpensScope (ObjectType)) 520 { 521 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", 522 AcpiUtGetTypeName (ObjectType), Op)); 523 524 Status = AcpiDsScopeStackPop (WalkState); 525 } 526 527 return (Status); 528} 529 530 531/******************************************************************************* 532 * 533 * FUNCTION: AcpiDsLoad2BeginOp 534 * 535 * PARAMETERS: WalkState - Current state of the parse tree walk 536 * Op - Op that has been just been reached in the 537 * walk; Arguments have not been evaluated yet. 538 * 539 * RETURN: Status 540 * 541 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 542 * 543 ******************************************************************************/ 544 545ACPI_STATUS 546AcpiDsLoad2BeginOp ( 547 ACPI_WALK_STATE *WalkState, 548 ACPI_PARSE_OBJECT **OutOp) 549{ 550 ACPI_PARSE_OBJECT *Op; 551 ACPI_NAMESPACE_NODE *Node; 552 ACPI_STATUS Status; 553 ACPI_OBJECT_TYPE ObjectType; 554 char *BufferPtr; 555 556 557 ACPI_FUNCTION_TRACE ("DsLoad2BeginOp"); 558 559 560 Op = WalkState->Op; 561 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 562 563 if (Op) 564 { 565 /* We only care about Namespace opcodes here */ 566 567 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 568 (!(WalkState->OpInfo->Flags & AML_NAMED))) 569 { 570 return_ACPI_STATUS (AE_OK); 571 } 572 573 /* 574 * Get the name we are going to enter or lookup in the namespace 575 */ 576 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 577 { 578 /* For Namepath op, get the path string */ 579 580 BufferPtr = Op->Common.Value.String; 581 if (!BufferPtr) 582 { 583 /* No name, just exit */ 584 585 return_ACPI_STATUS (AE_OK); 586 } 587 } 588 else 589 { 590 /* Get name from the op */ 591 592 BufferPtr = (char *) &Op->Named.Name; 593 } 594 } 595 else 596 { 597 /* Get the namestring from the raw AML */ 598 599 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 600 } 601 602 /* Map the opcode into an internal object type */ 603 604 ObjectType = WalkState->OpInfo->ObjectType; 605 606 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 607 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 608 609 610 switch (WalkState->Opcode) 611 { 612 case AML_FIELD_OP: 613 case AML_BANK_FIELD_OP: 614 case AML_INDEX_FIELD_OP: 615 616 Node = NULL; 617 Status = AE_OK; 618 break; 619 620 case AML_INT_NAMEPATH_OP: 621 622 /* 623 * The NamePath is an object reference to an existing object. Don't enter the 624 * name into the namespace, but look it up for use later 625 */ 626 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 627 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 628 break; 629 630 case AML_SCOPE_OP: 631 632 /* 633 * The Path is an object reference to an existing object. Don't enter the 634 * name into the namespace, but look it up for use later 635 */ 636 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 637 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 638 if (ACPI_FAILURE (Status)) 639 { 640 ACPI_REPORT_NSERROR (BufferPtr, Status); 641 return_ACPI_STATUS (Status); 642 } 643 /* 644 * We must check to make sure that the target is 645 * one of the opcodes that actually opens a scope 646 */ 647 switch (Node->Type) 648 { 649 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 650 case ACPI_TYPE_DEVICE: 651 case ACPI_TYPE_POWER: 652 case ACPI_TYPE_PROCESSOR: 653 case ACPI_TYPE_THERMAL: 654 655 /* These are acceptable types */ 656 break; 657 658 case ACPI_TYPE_INTEGER: 659 case ACPI_TYPE_STRING: 660 case ACPI_TYPE_BUFFER: 661 662 /* 663 * These types we will allow, but we will change the type. This 664 * enables some existing code of the form: 665 * 666 * Name (DEB, 0) 667 * Scope (DEB) { ... } 668 */ 669 670 ACPI_REPORT_WARNING (("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", 671 BufferPtr, AcpiUtGetTypeName (Node->Type))); 672 673 Node->Type = ACPI_TYPE_ANY; 674 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 675 break; 676 677 default: 678 679 /* All other types are an error */ 680 681 ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s]\n", 682 AcpiUtGetTypeName (Node->Type), BufferPtr)); 683 684 return (AE_AML_OPERAND_TYPE); 685 } 686 break; 687 688 default: 689 690 /* All other opcodes */ 691 692 if (Op && Op->Common.Node) 693 { 694 /* This op/node was previously entered into the namespace */ 695 696 Node = Op->Common.Node; 697 698 if (AcpiNsOpensScope (ObjectType)) 699 { 700 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 701 if (ACPI_FAILURE (Status)) 702 { 703 return_ACPI_STATUS (Status); 704 } 705 706 } 707 return_ACPI_STATUS (AE_OK); 708 } 709 710 /* 711 * Enter the named type into the internal namespace. We enter the name 712 * as we go downward in the parse tree. Any necessary subobjects that involve 713 * arguments to the opcode must be created as we go back up the parse tree later. 714 * 715 * Note: Name may already exist if we are executing a deferred opcode. 716 */ 717 if (WalkState->DeferredNode) 718 { 719 /* This name is already in the namespace, get the node */ 720 721 Node = WalkState->DeferredNode; 722 Status = AE_OK; 723 break; 724 } 725 726 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 727 ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, WalkState, &(Node)); 728 break; 729 } 730 731 if (ACPI_FAILURE (Status)) 732 { 733 ACPI_REPORT_NSERROR (BufferPtr, Status); 734 return_ACPI_STATUS (Status); 735 } 736 737 738 if (!Op) 739 { 740 /* Create a new op */ 741 742 Op = AcpiPsAllocOp (WalkState->Opcode); 743 if (!Op) 744 { 745 return_ACPI_STATUS (AE_NO_MEMORY); 746 } 747 748 /* Initialize the new op */ 749 750 if (Node) 751 { 752 Op->Named.Name = Node->Name.Integer; 753 } 754 if (OutOp) 755 { 756 *OutOp = Op; 757 } 758 } 759 760 /* 761 * Put the Node in the "op" object that the parser uses, so we 762 * can get it again quickly when this scope is closed 763 */ 764 Op->Common.Node = Node; 765 766 return_ACPI_STATUS (Status); 767} 768 769 770/******************************************************************************* 771 * 772 * FUNCTION: AcpiDsLoad2EndOp 773 * 774 * PARAMETERS: WalkState - Current state of the parse tree walk 775 * Op - Op that has been just been completed in the 776 * walk; Arguments have now been evaluated. 777 * 778 * RETURN: Status 779 * 780 * DESCRIPTION: Ascending callback used during the loading of the namespace, 781 * both control methods and everything else. 782 * 783 ******************************************************************************/ 784 785ACPI_STATUS 786AcpiDsLoad2EndOp ( 787 ACPI_WALK_STATE *WalkState) 788{ 789 ACPI_PARSE_OBJECT *Op; 790 ACPI_STATUS Status = AE_OK; 791 ACPI_OBJECT_TYPE ObjectType; 792 ACPI_NAMESPACE_NODE *Node; 793 ACPI_PARSE_OBJECT *Arg; 794 ACPI_NAMESPACE_NODE *NewNode; 795#ifndef ACPI_NO_METHOD_EXECUTION 796 UINT32 i; 797#endif 798 799 800 ACPI_FUNCTION_TRACE ("DsLoad2EndOp"); 801 802 Op = WalkState->Op; 803 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 804 WalkState->OpInfo->Name, Op, WalkState)); 805 806 /* Only interested in opcodes that have namespace objects */ 807 808 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 809 { 810 return_ACPI_STATUS (AE_OK); 811 } 812 813 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 814 { 815 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 816 "Ending scope Op=%p State=%p\n", Op, WalkState)); 817 } 818 819 820 ObjectType = WalkState->OpInfo->ObjectType; 821 822 /* 823 * Get the Node/name from the earlier lookup 824 * (It was saved in the *op structure) 825 */ 826 Node = Op->Common.Node; 827 828 /* 829 * Put the Node on the object stack (Contains the ACPI Name of 830 * this object) 831 */ 832 WalkState->Operands[0] = (void *) Node; 833 WalkState->NumOperands = 1; 834 835 /* Pop the scope stack */ 836 837 if (AcpiNsOpensScope (ObjectType) && (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 838 { 839 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 840 AcpiUtGetTypeName (ObjectType), Op)); 841 842 Status = AcpiDsScopeStackPop (WalkState); 843 if (ACPI_FAILURE (Status)) 844 { 845 goto Cleanup; 846 } 847 } 848 849 /* 850 * Named operations are as follows: 851 * 852 * AML_ALIAS 853 * AML_BANKFIELD 854 * AML_CREATEBITFIELD 855 * AML_CREATEBYTEFIELD 856 * AML_CREATEDWORDFIELD 857 * AML_CREATEFIELD 858 * AML_CREATEQWORDFIELD 859 * AML_CREATEWORDFIELD 860 * AML_DATA_REGION 861 * AML_DEVICE 862 * AML_EVENT 863 * AML_FIELD 864 * AML_INDEXFIELD 865 * AML_METHOD 866 * AML_METHODCALL 867 * AML_MUTEX 868 * AML_NAME 869 * AML_NAMEDFIELD 870 * AML_OPREGION 871 * AML_POWERRES 872 * AML_PROCESSOR 873 * AML_SCOPE 874 * AML_THERMALZONE 875 */ 876 877 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 878 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 879 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 880 881 /* Decode the opcode */ 882 883 Arg = Op->Common.Value.Arg; 884 885 switch (WalkState->OpInfo->Type) 886 { 887#ifndef ACPI_NO_METHOD_EXECUTION 888 889 case AML_TYPE_CREATE_FIELD: 890 891 /* 892 * Create the field object, but the field buffer and index must 893 * be evaluated later during the execution phase 894 */ 895 Status = AcpiDsCreateBufferField (Op, WalkState); 896 break; 897 898 899 case AML_TYPE_NAMED_FIELD: 900 901 switch (Op->Common.AmlOpcode) 902 { 903 case AML_INDEX_FIELD_OP: 904 905 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 906 WalkState); 907 break; 908 909 case AML_BANK_FIELD_OP: 910 911 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 912 break; 913 914 case AML_FIELD_OP: 915 916 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 917 break; 918 919 default: 920 /* All NAMED_FIELD opcodes must be handled above */ 921 break; 922 } 923 break; 924 925 926 case AML_TYPE_NAMED_SIMPLE: 927 928 Status = AcpiDsCreateOperands (WalkState, Arg); 929 if (ACPI_FAILURE (Status)) 930 { 931 goto Cleanup; 932 } 933 934 switch (Op->Common.AmlOpcode) 935 { 936 case AML_PROCESSOR_OP: 937 938 Status = AcpiExCreateProcessor (WalkState); 939 break; 940 941 case AML_POWER_RES_OP: 942 943 Status = AcpiExCreatePowerResource (WalkState); 944 break; 945 946 case AML_MUTEX_OP: 947 948 Status = AcpiExCreateMutex (WalkState); 949 break; 950 951 case AML_EVENT_OP: 952 953 Status = AcpiExCreateEvent (WalkState); 954 break; 955 956 case AML_DATA_REGION_OP: 957 958 Status = AcpiExCreateTableRegion (WalkState); 959 break; 960 961 case AML_ALIAS_OP: 962 963 Status = AcpiExCreateAlias (WalkState); 964 break; 965 966 default: 967 /* Unknown opcode */ 968 969 Status = AE_OK; 970 goto Cleanup; 971 } 972 973 /* Delete operands */ 974 975 for (i = 1; i < WalkState->NumOperands; i++) 976 { 977 AcpiUtRemoveReference (WalkState->Operands[i]); 978 WalkState->Operands[i] = NULL; 979 } 980 981 break; 982#endif /* ACPI_NO_METHOD_EXECUTION */ 983 984 case AML_TYPE_NAMED_COMPLEX: 985 986 switch (Op->Common.AmlOpcode) 987 { 988#ifndef ACPI_NO_METHOD_EXECUTION 989 case AML_REGION_OP: 990 /* 991 * The OpRegion is not fully parsed at this time. Only valid argument is the SpaceId. 992 * (We must save the address of the AML of the address and length operands) 993 */ 994 /* 995 * If we have a valid region, initialize it 996 * Namespace is NOT locked at this point. 997 */ 998 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), FALSE); 999 if (ACPI_FAILURE (Status)) 1000 { 1001 /* 1002 * If AE_NOT_EXIST is returned, it is not fatal 1003 * because many regions get created before a handler 1004 * is installed for said region. 1005 */ 1006 if (AE_NOT_EXIST == Status) 1007 { 1008 Status = AE_OK; 1009 } 1010 } 1011 break; 1012 1013 1014 case AML_NAME_OP: 1015 1016 Status = AcpiDsCreateNode (WalkState, Node, Op); 1017 break; 1018#endif /* ACPI_NO_METHOD_EXECUTION */ 1019 1020 1021 default: 1022 /* All NAMED_COMPLEX opcodes must be handled above */ 1023 /* Note: Method objects were already created in Pass 1 */ 1024 break; 1025 } 1026 break; 1027 1028 1029 case AML_CLASS_INTERNAL: 1030 1031 /* case AML_INT_NAMEPATH_OP: */ 1032 break; 1033 1034 1035 case AML_CLASS_METHOD_CALL: 1036 1037 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1038 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", 1039 WalkState, Op, Node)); 1040 1041 /* 1042 * Lookup the method name and save the Node 1043 */ 1044 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 1045 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, 1046 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 1047 WalkState, &(NewNode)); 1048 if (ACPI_SUCCESS (Status)) 1049 { 1050 /* 1051 * Make sure that what we found is indeed a method 1052 * We didn't search for a method on purpose, to see if the name would resolve 1053 */ 1054 if (NewNode->Type != ACPI_TYPE_METHOD) 1055 { 1056 Status = AE_AML_OPERAND_TYPE; 1057 } 1058 1059 /* We could put the returned object (Node) on the object stack for later, but 1060 * for now, we will put it in the "op" object that the parser uses, so we 1061 * can get it again at the end of this scope 1062 */ 1063 Op->Common.Node = NewNode; 1064 } 1065 else 1066 { 1067 ACPI_REPORT_NSERROR (Arg->Common.Value.String, Status); 1068 } 1069 break; 1070 1071 1072 default: 1073 break; 1074 } 1075 1076Cleanup: 1077 1078 /* Remove the Node pushed at the very beginning */ 1079 1080 WalkState->Operands[0] = NULL; 1081 WalkState->NumOperands = 0; 1082 return_ACPI_STATUS (Status); 1083} 1084 1085
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