1 /****************************************************************************** 2 * 3 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks 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 "acparser.h" 119 #include "amlcode.h" 120 #include "acdispat.h" 121 #include "acinterp.h" 122 #include "acnamesp.h" 123 #include "acevents.h" 124 125 #define _COMPONENT ACPI_DISPATCHER 126 ACPI_MODULE_NAME ("dswload2") 127 128 129 /******************************************************************************* 130 * 131 * FUNCTION: AcpiDsLoad2BeginOp 132 * 133 * PARAMETERS: WalkState - Current state of the parse tree walk 134 * OutOp - Wher to return op if a new one is created 135 * 136 * RETURN: Status 137 * 138 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 139 * 140 ******************************************************************************/ 141 142 ACPI_STATUS 143 AcpiDsLoad2BeginOp ( 144 ACPI_WALK_STATE *WalkState, 145 ACPI_PARSE_OBJECT **OutOp) 146 { 147 ACPI_PARSE_OBJECT *Op; 148 ACPI_NAMESPACE_NODE *Node; 149 ACPI_STATUS Status; 150 ACPI_OBJECT_TYPE ObjectType; 151 char *BufferPtr; 152 UINT32 Flags; 153 154 155 ACPI_FUNCTION_TRACE (DsLoad2BeginOp); 156 157 158 Op = WalkState->Op; 159 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 160 161 if (Op) 162 { 163 if ((WalkState->ControlState) && 164 (WalkState->ControlState->Common.State == 165 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 166 { 167 /* We are executing a while loop outside of a method */ 168 169 Status = AcpiDsExecBeginOp (WalkState, OutOp); 170 return_ACPI_STATUS (Status); 171 } 172 173 /* We only care about Namespace opcodes here */ 174 175 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && 176 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 177 (!(WalkState->OpInfo->Flags & AML_NAMED))) 178 { 179 return_ACPI_STATUS (AE_OK); 180 } 181 182 /* Get the name we are going to enter or lookup in the namespace */ 183 184 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 185 { 186 /* For Namepath op, get the path string */ 187 188 BufferPtr = Op->Common.Value.String; 189 if (!BufferPtr) 190 { 191 /* No name, just exit */ 192 193 return_ACPI_STATUS (AE_OK); 194 } 195 } 196 else 197 { 198 /* Get name from the op */ 199 200 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name); 201 } 202 } 203 else 204 { 205 /* Get the namestring from the raw AML */ 206 207 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 208 } 209 210 /* Map the opcode into an internal object type */ 211 212 ObjectType = WalkState->OpInfo->ObjectType; 213 214 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 215 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 216 217 switch (WalkState->Opcode) 218 { 219 case AML_FIELD_OP: 220 case AML_BANK_FIELD_OP: 221 case AML_INDEX_FIELD_OP: 222 223 Node = NULL; 224 Status = AE_OK; 225 break; 226 227 case AML_INT_NAMEPATH_OP: 228 /* 229 * The NamePath is an object reference to an existing object. 230 * Don't enter the name into the namespace, but look it up 231 * for use later. 232 */ 233 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 234 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 235 WalkState, &(Node)); 236 break; 237 238 case AML_SCOPE_OP: 239 240 /* Special case for Scope(\) -> refers to the Root node */ 241 242 if (Op && (Op->Named.Node == AcpiGbl_RootNode)) 243 { 244 Node = Op->Named.Node; 245 246 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 247 if (ACPI_FAILURE (Status)) 248 { 249 return_ACPI_STATUS (Status); 250 } 251 } 252 else 253 { 254 /* 255 * The Path is an object reference to an existing object. 256 * Don't enter the name into the namespace, but look it up 257 * for use later. 258 */ 259 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 260 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 261 WalkState, &(Node)); 262 if (ACPI_FAILURE (Status)) 263 { 264 #ifdef ACPI_ASL_COMPILER 265 if (Status == AE_NOT_FOUND) 266 { 267 Status = AE_OK; 268 } 269 else 270 { 271 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 272 } 273 #else 274 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 275 #endif 276 return_ACPI_STATUS (Status); 277 } 278 } 279 280 /* 281 * We must check to make sure that the target is 282 * one of the opcodes that actually opens a scope 283 */ 284 switch (Node->Type) 285 { 286 case ACPI_TYPE_ANY: 287 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 288 case ACPI_TYPE_DEVICE: 289 case ACPI_TYPE_POWER: 290 case ACPI_TYPE_PROCESSOR: 291 case ACPI_TYPE_THERMAL: 292 293 /* These are acceptable types */ 294 break; 295 296 case ACPI_TYPE_INTEGER: 297 case ACPI_TYPE_STRING: 298 case ACPI_TYPE_BUFFER: 299 300 /* 301 * These types we will allow, but we will change the type. 302 * This enables some existing code of the form: 303 * 304 * Name (DEB, 0) 305 * Scope (DEB) { ... } 306 */ 307 ACPI_WARNING ((AE_INFO, 308 "Type override - [%4.4s] had invalid type (%s) " 309 "for Scope operator, changed to type ANY", 310 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type))); 311 312 Node->Type = ACPI_TYPE_ANY; 313 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 314 break; 315 316 case ACPI_TYPE_METHOD: 317 318 /* 319 * Allow scope change to root during execution of module-level 320 * code. Root is typed METHOD during this time. 321 */ 322 if ((Node == AcpiGbl_RootNode) && 323 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 324 { 325 break; 326 } 327 328 /*lint -fallthrough */ 329 330 default: 331 332 /* All other types are an error */ 333 334 ACPI_ERROR ((AE_INFO, 335 "Invalid type (%s) for target of " 336 "Scope operator [%4.4s] (Cannot override)", 337 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node))); 338 339 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 340 } 341 break; 342 343 default: 344 345 /* All other opcodes */ 346 347 if (Op && Op->Common.Node) 348 { 349 /* This op/node was previously entered into the namespace */ 350 351 Node = Op->Common.Node; 352 353 if (AcpiNsOpensScope (ObjectType)) 354 { 355 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 356 if (ACPI_FAILURE (Status)) 357 { 358 return_ACPI_STATUS (Status); 359 } 360 } 361 362 return_ACPI_STATUS (AE_OK); 363 } 364 365 /* 366 * Enter the named type into the internal namespace. We enter the name 367 * as we go downward in the parse tree. Any necessary subobjects that 368 * involve arguments to the opcode must be created as we go back up the 369 * parse tree later. 370 * 371 * Note: Name may already exist if we are executing a deferred opcode. 372 */ 373 if (WalkState->DeferredNode) 374 { 375 /* This name is already in the namespace, get the node */ 376 377 Node = WalkState->DeferredNode; 378 Status = AE_OK; 379 break; 380 } 381 382 Flags = ACPI_NS_NO_UPSEARCH; 383 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE) 384 { 385 /* Execution mode, node cannot already exist, node is temporary */ 386 387 Flags |= ACPI_NS_ERROR_IF_FOUND; 388 389 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 390 { 391 Flags |= ACPI_NS_TEMPORARY; 392 } 393 } 394 395 /* Add new entry or lookup existing entry */ 396 397 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 398 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node); 399 400 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY)) 401 { 402 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 403 "***New Node [%4.4s] %p is temporary\n", 404 AcpiUtGetNodeName (Node), Node)); 405 } 406 break; 407 } 408 409 if (ACPI_FAILURE (Status)) 410 { 411 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 412 return_ACPI_STATUS (Status); 413 } 414 415 if (!Op) 416 { 417 /* Create a new op */ 418 419 Op = AcpiPsAllocOp (WalkState->Opcode, WalkState->Aml); 420 if (!Op) 421 { 422 return_ACPI_STATUS (AE_NO_MEMORY); 423 } 424 425 /* Initialize the new op */ 426 427 if (Node) 428 { 429 Op->Named.Name = Node->Name.Integer; 430 } 431 *OutOp = Op; 432 } 433 434 /* 435 * Put the Node in the "op" object that the parser uses, so we 436 * can get it again quickly when this scope is closed 437 */ 438 Op->Common.Node = Node; 439 return_ACPI_STATUS (Status); 440 } 441 442 443 /******************************************************************************* 444 * 445 * FUNCTION: AcpiDsLoad2EndOp 446 * 447 * PARAMETERS: WalkState - Current state of the parse tree walk 448 * 449 * RETURN: Status 450 * 451 * DESCRIPTION: Ascending callback used during the loading of the namespace, 452 * both control methods and everything else. 453 * 454 ******************************************************************************/ 455 456 ACPI_STATUS 457 AcpiDsLoad2EndOp ( 458 ACPI_WALK_STATE *WalkState) 459 { 460 ACPI_PARSE_OBJECT *Op; 461 ACPI_STATUS Status = AE_OK; 462 ACPI_OBJECT_TYPE ObjectType; 463 ACPI_NAMESPACE_NODE *Node; 464 ACPI_PARSE_OBJECT *Arg; 465 ACPI_NAMESPACE_NODE *NewNode; 466 #ifndef ACPI_NO_METHOD_EXECUTION 467 UINT32 i; 468 UINT8 RegionSpace; 469 #endif 470 471 472 ACPI_FUNCTION_TRACE (DsLoad2EndOp); 473 474 Op = WalkState->Op; 475 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 476 WalkState->OpInfo->Name, Op, WalkState)); 477 478 /* Check if opcode had an associated namespace object */ 479 480 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 481 { 482 return_ACPI_STATUS (AE_OK); 483 } 484 485 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 486 { 487 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 488 "Ending scope Op=%p State=%p\n", Op, WalkState)); 489 } 490 491 ObjectType = WalkState->OpInfo->ObjectType; 492 493 /* 494 * Get the Node/name from the earlier lookup 495 * (It was saved in the *op structure) 496 */ 497 Node = Op->Common.Node; 498 499 /* 500 * Put the Node on the object stack (Contains the ACPI Name of 501 * this object) 502 */ 503 WalkState->Operands[0] = (void *) Node; 504 WalkState->NumOperands = 1; 505 506 /* Pop the scope stack */ 507 508 if (AcpiNsOpensScope (ObjectType) && 509 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 510 { 511 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 512 AcpiUtGetTypeName (ObjectType), Op)); 513 514 Status = AcpiDsScopeStackPop (WalkState); 515 if (ACPI_FAILURE (Status)) 516 { 517 goto Cleanup; 518 } 519 } 520 521 /* 522 * Named operations are as follows: 523 * 524 * AML_ALIAS 525 * AML_BANKFIELD 526 * AML_CREATEBITFIELD 527 * AML_CREATEBYTEFIELD 528 * AML_CREATEDWORDFIELD 529 * AML_CREATEFIELD 530 * AML_CREATEQWORDFIELD 531 * AML_CREATEWORDFIELD 532 * AML_DATA_REGION 533 * AML_DEVICE 534 * AML_EVENT 535 * AML_FIELD 536 * AML_INDEXFIELD 537 * AML_METHOD 538 * AML_METHODCALL 539 * AML_MUTEX 540 * AML_NAME 541 * AML_NAMEDFIELD 542 * AML_OPREGION 543 * AML_POWERRES 544 * AML_PROCESSOR 545 * AML_SCOPE 546 * AML_THERMALZONE 547 */ 548 549 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 550 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 551 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 552 553 /* Decode the opcode */ 554 555 Arg = Op->Common.Value.Arg; 556 557 switch (WalkState->OpInfo->Type) 558 { 559 #ifndef ACPI_NO_METHOD_EXECUTION 560 561 case AML_TYPE_CREATE_FIELD: 562 /* 563 * Create the field object, but the field buffer and index must 564 * be evaluated later during the execution phase 565 */ 566 Status = AcpiDsCreateBufferField (Op, WalkState); 567 break; 568 569 case AML_TYPE_NAMED_FIELD: 570 /* 571 * If we are executing a method, initialize the field 572 */ 573 if (WalkState->MethodNode) 574 { 575 Status = AcpiDsInitFieldObjects (Op, WalkState); 576 } 577 578 switch (Op->Common.AmlOpcode) 579 { 580 case AML_INDEX_FIELD_OP: 581 582 Status = AcpiDsCreateIndexField ( 583 Op, (ACPI_HANDLE) Arg->Common.Node, WalkState); 584 break; 585 586 case AML_BANK_FIELD_OP: 587 588 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 589 break; 590 591 case AML_FIELD_OP: 592 593 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 594 break; 595 596 default: 597 598 /* All NAMED_FIELD opcodes must be handled above */ 599 break; 600 } 601 break; 602 603 case AML_TYPE_NAMED_SIMPLE: 604 605 Status = AcpiDsCreateOperands (WalkState, Arg); 606 if (ACPI_FAILURE (Status)) 607 { 608 goto Cleanup; 609 } 610 611 switch (Op->Common.AmlOpcode) 612 { 613 case AML_PROCESSOR_OP: 614 615 Status = AcpiExCreateProcessor (WalkState); 616 break; 617 618 case AML_POWER_RES_OP: 619 620 Status = AcpiExCreatePowerResource (WalkState); 621 break; 622 623 case AML_MUTEX_OP: 624 625 Status = AcpiExCreateMutex (WalkState); 626 break; 627 628 case AML_EVENT_OP: 629 630 Status = AcpiExCreateEvent (WalkState); 631 break; 632 633 case AML_ALIAS_OP: 634 635 Status = AcpiExCreateAlias (WalkState); 636 break; 637 638 default: 639 640 /* Unknown opcode */ 641 642 Status = AE_OK; 643 goto Cleanup; 644 } 645 646 /* Delete operands */ 647 648 for (i = 1; i < WalkState->NumOperands; i++) 649 { 650 AcpiUtRemoveReference (WalkState->Operands[i]); 651 WalkState->Operands[i] = NULL; 652 } 653 654 break; 655 #endif /* ACPI_NO_METHOD_EXECUTION */ 656 657 case AML_TYPE_NAMED_COMPLEX: 658 659 switch (Op->Common.AmlOpcode) 660 { 661 #ifndef ACPI_NO_METHOD_EXECUTION 662 case AML_REGION_OP: 663 case AML_DATA_REGION_OP: 664 665 if (Op->Common.AmlOpcode == AML_REGION_OP) 666 { 667 RegionSpace = (ACPI_ADR_SPACE_TYPE) 668 ((Op->Common.Value.Arg)->Common.Value.Integer); 669 } 670 else 671 { 672 RegionSpace = ACPI_ADR_SPACE_DATA_TABLE; 673 } 674 675 /* 676 * The OpRegion is not fully parsed at this time. The only valid 677 * argument is the SpaceId. (We must save the address of the 678 * AML of the address and length operands) 679 * 680 * If we have a valid region, initialize it. The namespace is 681 * unlocked at this point. 682 * 683 * Need to unlock interpreter if it is locked (if we are running 684 * a control method), in order to allow _REG methods to be run 685 * during AcpiEvInitializeRegion. 686 */ 687 if (WalkState->MethodNode) 688 { 689 /* 690 * Executing a method: initialize the region and unlock 691 * the interpreter 692 */ 693 Status = AcpiExCreateRegion (Op->Named.Data, 694 Op->Named.Length, RegionSpace, WalkState); 695 if (ACPI_FAILURE (Status)) 696 { 697 return_ACPI_STATUS (Status); 698 } 699 700 AcpiExExitInterpreter (); 701 } 702 703 Status = AcpiEvInitializeRegion ( 704 AcpiNsGetAttachedObject (Node), FALSE); 705 if (WalkState->MethodNode) 706 { 707 AcpiExEnterInterpreter (); 708 } 709 710 if (ACPI_FAILURE (Status)) 711 { 712 /* 713 * If AE_NOT_EXIST is returned, it is not fatal 714 * because many regions get created before a handler 715 * is installed for said region. 716 */ 717 if (AE_NOT_EXIST == Status) 718 { 719 Status = AE_OK; 720 } 721 } 722 break; 723 724 case AML_NAME_OP: 725 726 Status = AcpiDsCreateNode (WalkState, Node, Op); 727 break; 728 729 case AML_METHOD_OP: 730 /* 731 * MethodOp PkgLength NameString MethodFlags TermList 732 * 733 * Note: We must create the method node/object pair as soon as we 734 * see the method declaration. This allows later pass1 parsing 735 * of invocations of the method (need to know the number of 736 * arguments.) 737 */ 738 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 739 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 740 WalkState, Op, Op->Named.Node)); 741 742 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 743 { 744 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); 745 WalkState->NumOperands = 1; 746 747 Status = AcpiDsCreateOperands ( 748 WalkState, Op->Common.Value.Arg); 749 if (ACPI_SUCCESS (Status)) 750 { 751 Status = AcpiExCreateMethod ( 752 Op->Named.Data, Op->Named.Length, WalkState); 753 } 754 755 WalkState->Operands[0] = NULL; 756 WalkState->NumOperands = 0; 757 758 if (ACPI_FAILURE (Status)) 759 { 760 return_ACPI_STATUS (Status); 761 } 762 } 763 break; 764 765 #endif /* ACPI_NO_METHOD_EXECUTION */ 766 767 default: 768 769 /* All NAMED_COMPLEX opcodes must be handled above */ 770 break; 771 } 772 break; 773 774 case AML_CLASS_INTERNAL: 775 776 /* case AML_INT_NAMEPATH_OP: */ 777 break; 778 779 case AML_CLASS_METHOD_CALL: 780 781 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 782 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", 783 WalkState, Op, Node)); 784 785 /* 786 * Lookup the method name and save the Node 787 */ 788 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 789 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, 790 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 791 WalkState, &(NewNode)); 792 if (ACPI_SUCCESS (Status)) 793 { 794 /* 795 * Make sure that what we found is indeed a method 796 * We didn't search for a method on purpose, to see if the name 797 * would resolve 798 */ 799 if (NewNode->Type != ACPI_TYPE_METHOD) 800 { 801 Status = AE_AML_OPERAND_TYPE; 802 } 803 804 /* We could put the returned object (Node) on the object stack for 805 * later, but for now, we will put it in the "op" object that the 806 * parser uses, so we can get it again at the end of this scope 807 */ 808 Op->Common.Node = NewNode; 809 } 810 else 811 { 812 ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); 813 } 814 break; 815 816 817 default: 818 819 break; 820 } 821 822 Cleanup: 823 824 /* Remove the Node pushed at the very beginning */ 825 826 WalkState->Operands[0] = NULL; 827 WalkState->NumOperands = 0; 828 return_ACPI_STATUS (Status); 829 } 830