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 - 2014, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #define __DSWLOAD2_C__ 117 118 #include "acpi.h" 119 #include "accommon.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 #define _COMPONENT ACPI_DISPATCHER 128 ACPI_MODULE_NAME ("dswload2") 129 130 131 /******************************************************************************* 132 * 133 * FUNCTION: AcpiDsLoad2BeginOp 134 * 135 * PARAMETERS: WalkState - Current state of the parse tree walk 136 * OutOp - Wher to return op if a new one is created 137 * 138 * RETURN: Status 139 * 140 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 141 * 142 ******************************************************************************/ 143 144 ACPI_STATUS 145 AcpiDsLoad2BeginOp ( 146 ACPI_WALK_STATE *WalkState, 147 ACPI_PARSE_OBJECT **OutOp) 148 { 149 ACPI_PARSE_OBJECT *Op; 150 ACPI_NAMESPACE_NODE *Node; 151 ACPI_STATUS Status; 152 ACPI_OBJECT_TYPE ObjectType; 153 char *BufferPtr; 154 UINT32 Flags; 155 156 157 ACPI_FUNCTION_TRACE (DsLoad2BeginOp); 158 159 160 Op = WalkState->Op; 161 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 162 163 if (Op) 164 { 165 if ((WalkState->ControlState) && 166 (WalkState->ControlState->Common.State == 167 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 168 { 169 /* We are executing a while loop outside of a method */ 170 171 Status = AcpiDsExecBeginOp (WalkState, OutOp); 172 return_ACPI_STATUS (Status); 173 } 174 175 /* We only care about Namespace opcodes here */ 176 177 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && 178 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 179 (!(WalkState->OpInfo->Flags & AML_NAMED))) 180 { 181 return_ACPI_STATUS (AE_OK); 182 } 183 184 /* Get the name we are going to enter or lookup in the namespace */ 185 186 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 187 { 188 /* For Namepath op, get the path string */ 189 190 BufferPtr = Op->Common.Value.String; 191 if (!BufferPtr) 192 { 193 /* No name, just exit */ 194 195 return_ACPI_STATUS (AE_OK); 196 } 197 } 198 else 199 { 200 /* Get name from the op */ 201 202 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name); 203 } 204 } 205 else 206 { 207 /* Get the namestring from the raw AML */ 208 209 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 210 } 211 212 /* Map the opcode into an internal object type */ 213 214 ObjectType = WalkState->OpInfo->ObjectType; 215 216 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 217 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 218 219 switch (WalkState->Opcode) 220 { 221 case AML_FIELD_OP: 222 case AML_BANK_FIELD_OP: 223 case AML_INDEX_FIELD_OP: 224 225 Node = NULL; 226 Status = AE_OK; 227 break; 228 229 case AML_INT_NAMEPATH_OP: 230 /* 231 * The NamePath is an object reference to an existing object. 232 * Don't enter the name into the namespace, but look it up 233 * for use later. 234 */ 235 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 236 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 237 WalkState, &(Node)); 238 break; 239 240 case AML_SCOPE_OP: 241 242 /* Special case for Scope(\) -> refers to the Root node */ 243 244 if (Op && (Op->Named.Node == AcpiGbl_RootNode)) 245 { 246 Node = Op->Named.Node; 247 248 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 249 if (ACPI_FAILURE (Status)) 250 { 251 return_ACPI_STATUS (Status); 252 } 253 } 254 else 255 { 256 /* 257 * The Path is an object reference to an existing object. 258 * Don't enter the name into the namespace, but look it up 259 * for use later. 260 */ 261 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 262 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 263 WalkState, &(Node)); 264 if (ACPI_FAILURE (Status)) 265 { 266 #ifdef ACPI_ASL_COMPILER 267 if (Status == AE_NOT_FOUND) 268 { 269 Status = AE_OK; 270 } 271 else 272 { 273 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 274 } 275 #else 276 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 277 #endif 278 return_ACPI_STATUS (Status); 279 } 280 } 281 282 /* 283 * We must check to make sure that the target is 284 * one of the opcodes that actually opens a scope 285 */ 286 switch (Node->Type) 287 { 288 case ACPI_TYPE_ANY: 289 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 290 case ACPI_TYPE_DEVICE: 291 case ACPI_TYPE_POWER: 292 case ACPI_TYPE_PROCESSOR: 293 case ACPI_TYPE_THERMAL: 294 295 /* These are acceptable types */ 296 break; 297 298 case ACPI_TYPE_INTEGER: 299 case ACPI_TYPE_STRING: 300 case ACPI_TYPE_BUFFER: 301 302 /* 303 * These types we will allow, but we will change the type. 304 * This enables some existing code of the form: 305 * 306 * Name (DEB, 0) 307 * Scope (DEB) { ... } 308 */ 309 ACPI_WARNING ((AE_INFO, 310 "Type override - [%4.4s] had invalid type (%s) " 311 "for Scope operator, changed to type ANY", 312 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type))); 313 314 Node->Type = ACPI_TYPE_ANY; 315 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 316 break; 317 318 case ACPI_TYPE_METHOD: 319 320 /* 321 * Allow scope change to root during execution of module-level 322 * code. Root is typed METHOD during this time. 323 */ 324 if ((Node == AcpiGbl_RootNode) && 325 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 326 { 327 break; 328 } 329 330 /*lint -fallthrough */ 331 332 default: 333 334 /* All other types are an error */ 335 336 ACPI_ERROR ((AE_INFO, 337 "Invalid type (%s) for target of " 338 "Scope operator [%4.4s] (Cannot override)", 339 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node))); 340 341 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 342 } 343 break; 344 345 default: 346 347 /* All other opcodes */ 348 349 if (Op && Op->Common.Node) 350 { 351 /* This op/node was previously entered into the namespace */ 352 353 Node = Op->Common.Node; 354 355 if (AcpiNsOpensScope (ObjectType)) 356 { 357 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 358 if (ACPI_FAILURE (Status)) 359 { 360 return_ACPI_STATUS (Status); 361 } 362 } 363 364 return_ACPI_STATUS (AE_OK); 365 } 366 367 /* 368 * Enter the named type into the internal namespace. We enter the name 369 * as we go downward in the parse tree. Any necessary subobjects that 370 * involve arguments to the opcode must be created as we go back up the 371 * parse tree later. 372 * 373 * Note: Name may already exist if we are executing a deferred opcode. 374 */ 375 if (WalkState->DeferredNode) 376 { 377 /* This name is already in the namespace, get the node */ 378 379 Node = WalkState->DeferredNode; 380 Status = AE_OK; 381 break; 382 } 383 384 Flags = ACPI_NS_NO_UPSEARCH; 385 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE) 386 { 387 /* Execution mode, node cannot already exist, node is temporary */ 388 389 Flags |= ACPI_NS_ERROR_IF_FOUND; 390 391 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 392 { 393 Flags |= ACPI_NS_TEMPORARY; 394 } 395 } 396 397 /* Add new entry or lookup existing entry */ 398 399 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 400 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node); 401 402 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY)) 403 { 404 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 405 "***New Node [%4.4s] %p is temporary\n", 406 AcpiUtGetNodeName (Node), Node)); 407 } 408 break; 409 } 410 411 if (ACPI_FAILURE (Status)) 412 { 413 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 414 return_ACPI_STATUS (Status); 415 } 416 417 if (!Op) 418 { 419 /* Create a new op */ 420 421 Op = AcpiPsAllocOp (WalkState->Opcode); 422 if (!Op) 423 { 424 return_ACPI_STATUS (AE_NO_MEMORY); 425 } 426 427 /* Initialize the new op */ 428 429 if (Node) 430 { 431 Op->Named.Name = Node->Name.Integer; 432 } 433 *OutOp = Op; 434 } 435 436 /* 437 * Put the Node in the "op" object that the parser uses, so we 438 * can get it again quickly when this scope is closed 439 */ 440 Op->Common.Node = Node; 441 return_ACPI_STATUS (Status); 442 } 443 444 445 /******************************************************************************* 446 * 447 * FUNCTION: AcpiDsLoad2EndOp 448 * 449 * PARAMETERS: WalkState - Current state of the parse tree walk 450 * 451 * RETURN: Status 452 * 453 * DESCRIPTION: Ascending callback used during the loading of the namespace, 454 * both control methods and everything else. 455 * 456 ******************************************************************************/ 457 458 ACPI_STATUS 459 AcpiDsLoad2EndOp ( 460 ACPI_WALK_STATE *WalkState) 461 { 462 ACPI_PARSE_OBJECT *Op; 463 ACPI_STATUS Status = AE_OK; 464 ACPI_OBJECT_TYPE ObjectType; 465 ACPI_NAMESPACE_NODE *Node; 466 ACPI_PARSE_OBJECT *Arg; 467 ACPI_NAMESPACE_NODE *NewNode; 468 #ifndef ACPI_NO_METHOD_EXECUTION 469 UINT32 i; 470 UINT8 RegionSpace; 471 #endif 472 473 474 ACPI_FUNCTION_TRACE (DsLoad2EndOp); 475 476 Op = WalkState->Op; 477 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 478 WalkState->OpInfo->Name, Op, WalkState)); 479 480 /* Check if opcode had an associated namespace object */ 481 482 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 483 { 484 return_ACPI_STATUS (AE_OK); 485 } 486 487 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 488 { 489 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 490 "Ending scope Op=%p State=%p\n", Op, WalkState)); 491 } 492 493 ObjectType = WalkState->OpInfo->ObjectType; 494 495 /* 496 * Get the Node/name from the earlier lookup 497 * (It was saved in the *op structure) 498 */ 499 Node = Op->Common.Node; 500 501 /* 502 * Put the Node on the object stack (Contains the ACPI Name of 503 * this object) 504 */ 505 WalkState->Operands[0] = (void *) Node; 506 WalkState->NumOperands = 1; 507 508 /* Pop the scope stack */ 509 510 if (AcpiNsOpensScope (ObjectType) && 511 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 512 { 513 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 514 AcpiUtGetTypeName (ObjectType), Op)); 515 516 Status = AcpiDsScopeStackPop (WalkState); 517 if (ACPI_FAILURE (Status)) 518 { 519 goto Cleanup; 520 } 521 } 522 523 /* 524 * Named operations are as follows: 525 * 526 * AML_ALIAS 527 * AML_BANKFIELD 528 * AML_CREATEBITFIELD 529 * AML_CREATEBYTEFIELD 530 * AML_CREATEDWORDFIELD 531 * AML_CREATEFIELD 532 * AML_CREATEQWORDFIELD 533 * AML_CREATEWORDFIELD 534 * AML_DATA_REGION 535 * AML_DEVICE 536 * AML_EVENT 537 * AML_FIELD 538 * AML_INDEXFIELD 539 * AML_METHOD 540 * AML_METHODCALL 541 * AML_MUTEX 542 * AML_NAME 543 * AML_NAMEDFIELD 544 * AML_OPREGION 545 * AML_POWERRES 546 * AML_PROCESSOR 547 * AML_SCOPE 548 * AML_THERMALZONE 549 */ 550 551 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 552 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 553 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 554 555 /* Decode the opcode */ 556 557 Arg = Op->Common.Value.Arg; 558 559 switch (WalkState->OpInfo->Type) 560 { 561 #ifndef ACPI_NO_METHOD_EXECUTION 562 563 case AML_TYPE_CREATE_FIELD: 564 /* 565 * Create the field object, but the field buffer and index must 566 * be evaluated later during the execution phase 567 */ 568 Status = AcpiDsCreateBufferField (Op, WalkState); 569 break; 570 571 case AML_TYPE_NAMED_FIELD: 572 /* 573 * If we are executing a method, initialize the field 574 */ 575 if (WalkState->MethodNode) 576 { 577 Status = AcpiDsInitFieldObjects (Op, WalkState); 578 } 579 580 switch (Op->Common.AmlOpcode) 581 { 582 case AML_INDEX_FIELD_OP: 583 584 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 585 WalkState); 586 break; 587 588 case AML_BANK_FIELD_OP: 589 590 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 591 break; 592 593 case AML_FIELD_OP: 594 595 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 596 break; 597 598 default: 599 600 /* All NAMED_FIELD opcodes must be handled above */ 601 break; 602 } 603 break; 604 605 case AML_TYPE_NAMED_SIMPLE: 606 607 Status = AcpiDsCreateOperands (WalkState, Arg); 608 if (ACPI_FAILURE (Status)) 609 { 610 goto Cleanup; 611 } 612 613 switch (Op->Common.AmlOpcode) 614 { 615 case AML_PROCESSOR_OP: 616 617 Status = AcpiExCreateProcessor (WalkState); 618 break; 619 620 case AML_POWER_RES_OP: 621 622 Status = AcpiExCreatePowerResource (WalkState); 623 break; 624 625 case AML_MUTEX_OP: 626 627 Status = AcpiExCreateMutex (WalkState); 628 break; 629 630 case AML_EVENT_OP: 631 632 Status = AcpiExCreateEvent (WalkState); 633 break; 634 635 case AML_ALIAS_OP: 636 637 Status = AcpiExCreateAlias (WalkState); 638 break; 639 640 default: 641 642 /* Unknown opcode */ 643 644 Status = AE_OK; 645 goto Cleanup; 646 } 647 648 /* Delete operands */ 649 650 for (i = 1; i < WalkState->NumOperands; i++) 651 { 652 AcpiUtRemoveReference (WalkState->Operands[i]); 653 WalkState->Operands[i] = NULL; 654 } 655 656 break; 657 #endif /* ACPI_NO_METHOD_EXECUTION */ 658 659 case AML_TYPE_NAMED_COMPLEX: 660 661 switch (Op->Common.AmlOpcode) 662 { 663 #ifndef ACPI_NO_METHOD_EXECUTION 664 case AML_REGION_OP: 665 case AML_DATA_REGION_OP: 666 667 if (Op->Common.AmlOpcode == AML_REGION_OP) 668 { 669 RegionSpace = (ACPI_ADR_SPACE_TYPE) 670 ((Op->Common.Value.Arg)->Common.Value.Integer); 671 } 672 else 673 { 674 RegionSpace = ACPI_ADR_SPACE_DATA_TABLE; 675 } 676 677 /* 678 * The OpRegion is not fully parsed at this time. The only valid 679 * argument is the SpaceId. (We must save the address of the 680 * AML of the address and length operands) 681 * 682 * If we have a valid region, initialize it. The namespace is 683 * unlocked at this point. 684 * 685 * Need to unlock interpreter if it is locked (if we are running 686 * a control method), in order to allow _REG methods to be run 687 * during AcpiEvInitializeRegion. 688 */ 689 if (WalkState->MethodNode) 690 { 691 /* 692 * Executing a method: initialize the region and unlock 693 * the interpreter 694 */ 695 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 696 RegionSpace, WalkState); 697 if (ACPI_FAILURE (Status)) 698 { 699 return_ACPI_STATUS (Status); 700 } 701 702 AcpiExExitInterpreter (); 703 } 704 705 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), 706 FALSE); 707 if (WalkState->MethodNode) 708 { 709 AcpiExEnterInterpreter (); 710 } 711 712 if (ACPI_FAILURE (Status)) 713 { 714 /* 715 * If AE_NOT_EXIST is returned, it is not fatal 716 * because many regions get created before a handler 717 * is installed for said region. 718 */ 719 if (AE_NOT_EXIST == Status) 720 { 721 Status = AE_OK; 722 } 723 } 724 break; 725 726 case AML_NAME_OP: 727 728 Status = AcpiDsCreateNode (WalkState, Node, Op); 729 break; 730 731 case AML_METHOD_OP: 732 /* 733 * MethodOp PkgLength NameString MethodFlags TermList 734 * 735 * Note: We must create the method node/object pair as soon as we 736 * see the method declaration. This allows later pass1 parsing 737 * of invocations of the method (need to know the number of 738 * arguments.) 739 */ 740 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 741 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 742 WalkState, Op, Op->Named.Node)); 743 744 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 745 { 746 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); 747 WalkState->NumOperands = 1; 748 749 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 750 if (ACPI_SUCCESS (Status)) 751 { 752 Status = AcpiExCreateMethod (Op->Named.Data, 753 Op->Named.Length, WalkState); 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