1 /******************************************************************************
   2  *
   3  * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
   4  *
   5  *****************************************************************************/
   6 
   7 /*
   8  * Copyright (C) 2000 - 2013, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43 
  44 #define __DSWLOAD2_C__
  45 
  46 #include "acpi.h"
  47 #include "accommon.h"
  48 #include "acparser.h"
  49 #include "amlcode.h"
  50 #include "acdispat.h"
  51 #include "acinterp.h"
  52 #include "acnamesp.h"
  53 #include "acevents.h"
  54 
  55 #define _COMPONENT          ACPI_DISPATCHER
  56         ACPI_MODULE_NAME    ("dswload2")
  57 
  58 
  59 /*******************************************************************************
  60  *
  61  * FUNCTION:    AcpiDsLoad2BeginOp
  62  *
  63  * PARAMETERS:  WalkState       - Current state of the parse tree walk
  64  *              OutOp           - Wher to return op if a new one is created
  65  *
  66  * RETURN:      Status
  67  *
  68  * DESCRIPTION: Descending callback used during the loading of ACPI tables.
  69  *
  70  ******************************************************************************/
  71 
  72 ACPI_STATUS
  73 AcpiDsLoad2BeginOp (
  74     ACPI_WALK_STATE         *WalkState,
  75     ACPI_PARSE_OBJECT       **OutOp)
  76 {
  77     ACPI_PARSE_OBJECT       *Op;
  78     ACPI_NAMESPACE_NODE     *Node;
  79     ACPI_STATUS             Status;
  80     ACPI_OBJECT_TYPE        ObjectType;
  81     char                    *BufferPtr;
  82     UINT32                  Flags;
  83 
  84 
  85     ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
  86 
  87 
  88     Op = WalkState->Op;
  89     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
  90 
  91     if (Op)
  92     {
  93         if ((WalkState->ControlState) &&
  94             (WalkState->ControlState->Common.State ==
  95                 ACPI_CONTROL_CONDITIONAL_EXECUTING))
  96         {
  97             /* We are executing a while loop outside of a method */
  98 
  99             Status = AcpiDsExecBeginOp (WalkState, OutOp);
 100             return_ACPI_STATUS (Status);
 101         }
 102 
 103         /* We only care about Namespace opcodes here */
 104 
 105         if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE)   &&
 106               (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
 107             (!(WalkState->OpInfo->Flags & AML_NAMED)))
 108         {
 109             return_ACPI_STATUS (AE_OK);
 110         }
 111 
 112         /* Get the name we are going to enter or lookup in the namespace */
 113 
 114         if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
 115         {
 116             /* For Namepath op, get the path string */
 117 
 118             BufferPtr = Op->Common.Value.String;
 119             if (!BufferPtr)
 120             {
 121                 /* No name, just exit */
 122 
 123                 return_ACPI_STATUS (AE_OK);
 124             }
 125         }
 126         else
 127         {
 128             /* Get name from the op */
 129 
 130             BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
 131         }
 132     }
 133     else
 134     {
 135         /* Get the namestring from the raw AML */
 136 
 137         BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
 138     }
 139 
 140     /* Map the opcode into an internal object type */
 141 
 142     ObjectType = WalkState->OpInfo->ObjectType;
 143 
 144     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
 145         "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
 146 
 147     switch (WalkState->Opcode)
 148     {
 149     case AML_FIELD_OP:
 150     case AML_BANK_FIELD_OP:
 151     case AML_INDEX_FIELD_OP:
 152 
 153         Node = NULL;
 154         Status = AE_OK;
 155         break;
 156 
 157     case AML_INT_NAMEPATH_OP:
 158         /*
 159          * The NamePath is an object reference to an existing object.
 160          * Don't enter the name into the namespace, but look it up
 161          * for use later.
 162          */
 163         Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
 164                         ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
 165                         WalkState, &(Node));
 166         break;
 167 
 168     case AML_SCOPE_OP:
 169 
 170         /* Special case for Scope(\) -> refers to the Root node */
 171 
 172         if (Op && (Op->Named.Node == AcpiGbl_RootNode))
 173         {
 174             Node = Op->Named.Node;
 175 
 176             Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
 177             if (ACPI_FAILURE (Status))
 178             {
 179                 return_ACPI_STATUS (Status);
 180             }
 181         }
 182         else
 183         {
 184             /*
 185              * The Path is an object reference to an existing object.
 186              * Don't enter the name into the namespace, but look it up
 187              * for use later.
 188              */
 189             Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
 190                         ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
 191                         WalkState, &(Node));
 192             if (ACPI_FAILURE (Status))
 193             {
 194 #ifdef ACPI_ASL_COMPILER
 195                 if (Status == AE_NOT_FOUND)
 196                 {
 197                     Status = AE_OK;
 198                 }
 199                 else
 200                 {
 201                     ACPI_ERROR_NAMESPACE (BufferPtr, Status);
 202                 }
 203 #else
 204                 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
 205 #endif
 206                 return_ACPI_STATUS (Status);
 207             }
 208         }
 209 
 210         /*
 211          * We must check to make sure that the target is
 212          * one of the opcodes that actually opens a scope
 213          */
 214         switch (Node->Type)
 215         {
 216         case ACPI_TYPE_ANY:
 217         case ACPI_TYPE_LOCAL_SCOPE:         /* Scope */
 218         case ACPI_TYPE_DEVICE:
 219         case ACPI_TYPE_POWER:
 220         case ACPI_TYPE_PROCESSOR:
 221         case ACPI_TYPE_THERMAL:
 222 
 223             /* These are acceptable types */
 224             break;
 225 
 226         case ACPI_TYPE_INTEGER:
 227         case ACPI_TYPE_STRING:
 228         case ACPI_TYPE_BUFFER:
 229 
 230             /*
 231              * These types we will allow, but we will change the type.
 232              * This enables some existing code of the form:
 233              *
 234              *  Name (DEB, 0)
 235              *  Scope (DEB) { ... }
 236              */
 237             ACPI_WARNING ((AE_INFO,
 238                 "Type override - [%4.4s] had invalid type (%s) "
 239                 "for Scope operator, changed to type ANY",
 240                 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
 241 
 242             Node->Type = ACPI_TYPE_ANY;
 243             WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
 244             break;
 245 
 246         case ACPI_TYPE_METHOD:
 247 
 248             /*
 249              * Allow scope change to root during execution of module-level
 250              * code. Root is typed METHOD during this time.
 251              */
 252             if ((Node == AcpiGbl_RootNode) &&
 253                 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
 254             {
 255                 break;
 256             }
 257 
 258             /*lint -fallthrough */
 259 
 260         default:
 261 
 262             /* All other types are an error */
 263 
 264             ACPI_ERROR ((AE_INFO,
 265                 "Invalid type (%s) for target of "
 266                 "Scope operator [%4.4s] (Cannot override)",
 267                 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
 268 
 269             return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
 270         }
 271         break;
 272 
 273     default:
 274 
 275         /* All other opcodes */
 276 
 277         if (Op && Op->Common.Node)
 278         {
 279             /* This op/node was previously entered into the namespace */
 280 
 281             Node = Op->Common.Node;
 282 
 283             if (AcpiNsOpensScope (ObjectType))
 284             {
 285                 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
 286                 if (ACPI_FAILURE (Status))
 287                 {
 288                     return_ACPI_STATUS (Status);
 289                 }
 290             }
 291 
 292             return_ACPI_STATUS (AE_OK);
 293         }
 294 
 295         /*
 296          * Enter the named type into the internal namespace. We enter the name
 297          * as we go downward in the parse tree. Any necessary subobjects that
 298          * involve arguments to the opcode must be created as we go back up the
 299          * parse tree later.
 300          *
 301          * Note: Name may already exist if we are executing a deferred opcode.
 302          */
 303         if (WalkState->DeferredNode)
 304         {
 305             /* This name is already in the namespace, get the node */
 306 
 307             Node = WalkState->DeferredNode;
 308             Status = AE_OK;
 309             break;
 310         }
 311 
 312         Flags = ACPI_NS_NO_UPSEARCH;
 313         if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
 314         {
 315             /* Execution mode, node cannot already exist, node is temporary */
 316 
 317             Flags |= ACPI_NS_ERROR_IF_FOUND;
 318 
 319             if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
 320             {
 321                 Flags |= ACPI_NS_TEMPORARY;
 322             }
 323         }
 324 
 325         /* Add new entry or lookup existing entry */
 326 
 327         Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
 328                     ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
 329 
 330         if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
 331         {
 332             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
 333                 "***New Node [%4.4s] %p is temporary\n",
 334                 AcpiUtGetNodeName (Node), Node));
 335         }
 336         break;
 337     }
 338 
 339     if (ACPI_FAILURE (Status))
 340     {
 341         ACPI_ERROR_NAMESPACE (BufferPtr, Status);
 342         return_ACPI_STATUS (Status);
 343     }
 344 
 345     if (!Op)
 346     {
 347         /* Create a new op */
 348 
 349         Op = AcpiPsAllocOp (WalkState->Opcode);
 350         if (!Op)
 351         {
 352             return_ACPI_STATUS (AE_NO_MEMORY);
 353         }
 354 
 355         /* Initialize the new op */
 356 
 357         if (Node)
 358         {
 359             Op->Named.Name = Node->Name.Integer;
 360         }
 361         *OutOp = Op;
 362     }
 363 
 364     /*
 365      * Put the Node in the "op" object that the parser uses, so we
 366      * can get it again quickly when this scope is closed
 367      */
 368     Op->Common.Node = Node;
 369     return_ACPI_STATUS (Status);
 370 }
 371 
 372 
 373 /*******************************************************************************
 374  *
 375  * FUNCTION:    AcpiDsLoad2EndOp
 376  *
 377  * PARAMETERS:  WalkState       - Current state of the parse tree walk
 378  *
 379  * RETURN:      Status
 380  *
 381  * DESCRIPTION: Ascending callback used during the loading of the namespace,
 382  *              both control methods and everything else.
 383  *
 384  ******************************************************************************/
 385 
 386 ACPI_STATUS
 387 AcpiDsLoad2EndOp (
 388     ACPI_WALK_STATE         *WalkState)
 389 {
 390     ACPI_PARSE_OBJECT       *Op;
 391     ACPI_STATUS             Status = AE_OK;
 392     ACPI_OBJECT_TYPE        ObjectType;
 393     ACPI_NAMESPACE_NODE     *Node;
 394     ACPI_PARSE_OBJECT       *Arg;
 395     ACPI_NAMESPACE_NODE     *NewNode;
 396 #ifndef ACPI_NO_METHOD_EXECUTION
 397     UINT32                  i;
 398     UINT8                   RegionSpace;
 399 #endif
 400 
 401 
 402     ACPI_FUNCTION_TRACE (DsLoad2EndOp);
 403 
 404     Op = WalkState->Op;
 405     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
 406             WalkState->OpInfo->Name, Op, WalkState));
 407 
 408     /* Check if opcode had an associated namespace object */
 409 
 410     if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
 411     {
 412         return_ACPI_STATUS (AE_OK);
 413     }
 414 
 415     if (Op->Common.AmlOpcode == AML_SCOPE_OP)
 416     {
 417         ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
 418             "Ending scope Op=%p State=%p\n", Op, WalkState));
 419     }
 420 
 421     ObjectType = WalkState->OpInfo->ObjectType;
 422 
 423     /*
 424      * Get the Node/name from the earlier lookup
 425      * (It was saved in the *op structure)
 426      */
 427     Node = Op->Common.Node;
 428 
 429     /*
 430      * Put the Node on the object stack (Contains the ACPI Name of
 431      * this object)
 432      */
 433     WalkState->Operands[0] = (void *) Node;
 434     WalkState->NumOperands = 1;
 435 
 436     /* Pop the scope stack */
 437 
 438     if (AcpiNsOpensScope (ObjectType) &&
 439        (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
 440     {
 441         ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
 442             AcpiUtGetTypeName (ObjectType), Op));
 443 
 444         Status = AcpiDsScopeStackPop (WalkState);
 445         if (ACPI_FAILURE (Status))
 446         {
 447             goto Cleanup;
 448         }
 449     }
 450 
 451     /*
 452      * Named operations are as follows:
 453      *
 454      * AML_ALIAS
 455      * AML_BANKFIELD
 456      * AML_CREATEBITFIELD
 457      * AML_CREATEBYTEFIELD
 458      * AML_CREATEDWORDFIELD
 459      * AML_CREATEFIELD
 460      * AML_CREATEQWORDFIELD
 461      * AML_CREATEWORDFIELD
 462      * AML_DATA_REGION
 463      * AML_DEVICE
 464      * AML_EVENT
 465      * AML_FIELD
 466      * AML_INDEXFIELD
 467      * AML_METHOD
 468      * AML_METHODCALL
 469      * AML_MUTEX
 470      * AML_NAME
 471      * AML_NAMEDFIELD
 472      * AML_OPREGION
 473      * AML_POWERRES
 474      * AML_PROCESSOR
 475      * AML_SCOPE
 476      * AML_THERMALZONE
 477      */
 478 
 479     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
 480         "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
 481         AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
 482 
 483     /* Decode the opcode */
 484 
 485     Arg = Op->Common.Value.Arg;
 486 
 487     switch (WalkState->OpInfo->Type)
 488     {
 489 #ifndef ACPI_NO_METHOD_EXECUTION
 490 
 491     case AML_TYPE_CREATE_FIELD:
 492         /*
 493          * Create the field object, but the field buffer and index must
 494          * be evaluated later during the execution phase
 495          */
 496         Status = AcpiDsCreateBufferField (Op, WalkState);
 497         break;
 498 
 499      case AML_TYPE_NAMED_FIELD:
 500         /*
 501          * If we are executing a method, initialize the field
 502          */
 503         if (WalkState->MethodNode)
 504         {
 505             Status = AcpiDsInitFieldObjects (Op, WalkState);
 506         }
 507 
 508         switch (Op->Common.AmlOpcode)
 509         {
 510         case AML_INDEX_FIELD_OP:
 511 
 512             Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node,
 513                         WalkState);
 514             break;
 515 
 516         case AML_BANK_FIELD_OP:
 517 
 518             Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
 519             break;
 520 
 521         case AML_FIELD_OP:
 522 
 523             Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
 524             break;
 525 
 526         default:
 527 
 528             /* All NAMED_FIELD opcodes must be handled above */
 529             break;
 530         }
 531         break;
 532 
 533      case AML_TYPE_NAMED_SIMPLE:
 534 
 535         Status = AcpiDsCreateOperands (WalkState, Arg);
 536         if (ACPI_FAILURE (Status))
 537         {
 538             goto Cleanup;
 539         }
 540 
 541         switch (Op->Common.AmlOpcode)
 542         {
 543         case AML_PROCESSOR_OP:
 544 
 545             Status = AcpiExCreateProcessor (WalkState);
 546             break;
 547 
 548         case AML_POWER_RES_OP:
 549 
 550             Status = AcpiExCreatePowerResource (WalkState);
 551             break;
 552 
 553         case AML_MUTEX_OP:
 554 
 555             Status = AcpiExCreateMutex (WalkState);
 556             break;
 557 
 558         case AML_EVENT_OP:
 559 
 560             Status = AcpiExCreateEvent (WalkState);
 561             break;
 562 
 563         case AML_ALIAS_OP:
 564 
 565             Status = AcpiExCreateAlias (WalkState);
 566             break;
 567 
 568         default:
 569 
 570             /* Unknown opcode */
 571 
 572             Status = AE_OK;
 573             goto Cleanup;
 574         }
 575 
 576         /* Delete operands */
 577 
 578         for (i = 1; i < WalkState->NumOperands; i++)
 579         {
 580             AcpiUtRemoveReference (WalkState->Operands[i]);
 581             WalkState->Operands[i] = NULL;
 582         }
 583 
 584         break;
 585 #endif /* ACPI_NO_METHOD_EXECUTION */
 586 
 587     case AML_TYPE_NAMED_COMPLEX:
 588 
 589         switch (Op->Common.AmlOpcode)
 590         {
 591 #ifndef ACPI_NO_METHOD_EXECUTION
 592         case AML_REGION_OP:
 593         case AML_DATA_REGION_OP:
 594 
 595             if (Op->Common.AmlOpcode == AML_REGION_OP)
 596             {
 597                 RegionSpace = (ACPI_ADR_SPACE_TYPE)
 598                       ((Op->Common.Value.Arg)->Common.Value.Integer);
 599             }
 600             else
 601             {
 602                 RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
 603             }
 604 
 605             /*
 606              * The OpRegion is not fully parsed at this time. The only valid
 607              * argument is the SpaceId. (We must save the address of the
 608              * AML of the address and length operands)
 609              *
 610              * If we have a valid region, initialize it. The namespace is
 611              * unlocked at this point.
 612              *
 613              * Need to unlock interpreter if it is locked (if we are running
 614              * a control method), in order to allow _REG methods to be run
 615              * during AcpiEvInitializeRegion.
 616              */
 617             if (WalkState->MethodNode)
 618             {
 619                 /*
 620                  * Executing a method: initialize the region and unlock
 621                  * the interpreter
 622                  */
 623                 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
 624                             RegionSpace, WalkState);
 625                 if (ACPI_FAILURE (Status))
 626                 {
 627                     return_ACPI_STATUS (Status);
 628                 }
 629 
 630                 AcpiExExitInterpreter ();
 631             }
 632 
 633             Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node),
 634                         FALSE);
 635             if (WalkState->MethodNode)
 636             {
 637                 AcpiExEnterInterpreter ();
 638             }
 639 
 640             if (ACPI_FAILURE (Status))
 641             {
 642                 /*
 643                  *  If AE_NOT_EXIST is returned, it is not fatal
 644                  *  because many regions get created before a handler
 645                  *  is installed for said region.
 646                  */
 647                 if (AE_NOT_EXIST == Status)
 648                 {
 649                     Status = AE_OK;
 650                 }
 651             }
 652             break;
 653 
 654         case AML_NAME_OP:
 655 
 656             Status = AcpiDsCreateNode (WalkState, Node, Op);
 657             break;
 658 
 659         case AML_METHOD_OP:
 660             /*
 661              * MethodOp PkgLength NameString MethodFlags TermList
 662              *
 663              * Note: We must create the method node/object pair as soon as we
 664              * see the method declaration. This allows later pass1 parsing
 665              * of invocations of the method (need to know the number of
 666              * arguments.)
 667              */
 668             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
 669                 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
 670                 WalkState, Op, Op->Named.Node));
 671 
 672             if (!AcpiNsGetAttachedObject (Op->Named.Node))
 673             {
 674                 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
 675                 WalkState->NumOperands = 1;
 676 
 677                 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
 678                 if (ACPI_SUCCESS (Status))
 679                 {
 680                     Status = AcpiExCreateMethod (Op->Named.Data,
 681                                         Op->Named.Length, WalkState);
 682                 }
 683                 WalkState->Operands[0] = NULL;
 684                 WalkState->NumOperands = 0;
 685 
 686                 if (ACPI_FAILURE (Status))
 687                 {
 688                     return_ACPI_STATUS (Status);
 689                 }
 690             }
 691             break;
 692 
 693 #endif /* ACPI_NO_METHOD_EXECUTION */
 694 
 695         default:
 696 
 697             /* All NAMED_COMPLEX opcodes must be handled above */
 698             break;
 699         }
 700         break;
 701 
 702     case AML_CLASS_INTERNAL:
 703 
 704         /* case AML_INT_NAMEPATH_OP: */
 705         break;
 706 
 707     case AML_CLASS_METHOD_CALL:
 708 
 709         ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
 710             "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
 711             WalkState, Op, Node));
 712 
 713         /*
 714          * Lookup the method name and save the Node
 715          */
 716         Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
 717                         ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
 718                         ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
 719                         WalkState, &(NewNode));
 720         if (ACPI_SUCCESS (Status))
 721         {
 722             /*
 723              * Make sure that what we found is indeed a method
 724              * We didn't search for a method on purpose, to see if the name
 725              * would resolve
 726              */
 727             if (NewNode->Type != ACPI_TYPE_METHOD)
 728             {
 729                 Status = AE_AML_OPERAND_TYPE;
 730             }
 731 
 732             /* We could put the returned object (Node) on the object stack for
 733              * later, but for now, we will put it in the "op" object that the
 734              * parser uses, so we can get it again at the end of this scope
 735              */
 736             Op->Common.Node = NewNode;
 737         }
 738         else
 739         {
 740             ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status);
 741         }
 742         break;
 743 
 744 
 745     default:
 746 
 747         break;
 748     }
 749 
 750 Cleanup:
 751 
 752     /* Remove the Node pushed at the very beginning */
 753 
 754     WalkState->Operands[0] = NULL;
 755     WalkState->NumOperands = 0;
 756     return_ACPI_STATUS (Status);
 757 }