drivers/acpi/acpica/dswload2.c

   1 /******************************************************************************
   2  *
   3  * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2017, 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 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "acparser.h"
  47 #include "amlcode.h"
  48 #include "acdispat.h"
  49 #include "acinterp.h"
  50 #include "acnamesp.h"
  51 #include "acevents.h"
  52
  53 #define _COMPONENT          ACPI_DISPATCHER
  54 ACPI_MODULE_NAME("dswload2")
  55
  56 /*******************************************************************************
  57  *
  58  * FUNCTION:    acpi_ds_load2_begin_op
  59  *
  60  * PARAMETERS:  walk_state      - Current state of the parse tree walk
  61  *              out_op          - Wher to return op if a new one is created
  62  *
  63  * RETURN:      Status
  64  *
  65  * DESCRIPTION: Descending callback used during the loading of ACPI tables.
  66  *
  67  ******************************************************************************/
  68 acpi_status
  69 acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
  70                        union acpi_parse_object **out_op)
  71 {
  72         union acpi_parse_object *op;
  73         struct acpi_namespace_node *node;
  74         acpi_status status;
  75         acpi_object_type object_type;
  76         char *buffer_ptr;
  77         u32 flags;
  78
  79         ACPI_FUNCTION_TRACE(ds_load2_begin_op);
  80
  81         op = walk_state->op;
  82         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
  83                           walk_state));
  84
  85         if (op) {
  86                 if ((walk_state->control_state) &&
  87                     (walk_state->control_state->common.state ==
  88                      ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
  89
  90                         /* We are executing a while loop outside of a method */
  91
  92                         status = acpi_ds_exec_begin_op(walk_state, out_op);
  93                         return_ACPI_STATUS(status);
  94                 }
  95
  96                 /* We only care about Namespace opcodes here */
  97
  98                 if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
  99                      (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
 100                     (!(walk_state->op_info->flags & AML_NAMED))) {
 101                         return_ACPI_STATUS(AE_OK);
 102                 }
 103
 104                 /* Get the name we are going to enter or lookup in the namespace */
 105
 106                 if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
 107
 108                         /* For Namepath op, get the path string */
 109
 110                         buffer_ptr = op->common.value.string;
 111                         if (!buffer_ptr) {
 112
 113                                 /* No name, just exit */
 114
 115                                 return_ACPI_STATUS(AE_OK);
 116                         }
 117                 } else {
 118                         /* Get name from the op */
 119
 120                         buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
 121                 }
 122         } else {
 123                 /* Get the namestring from the raw AML */
 124
 125                 buffer_ptr =
 126                     acpi_ps_get_next_namestring(&walk_state->parser_state);
 127         }
 128
 129         /* Map the opcode into an internal object type */
 130
 131         object_type = walk_state->op_info->object_type;
 132
 133         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 134                           "State=%p Op=%p Type=%X\n", walk_state, op,
 135                           object_type));
 136
 137         switch (walk_state->opcode) {
 138         case AML_FIELD_OP:
 139         case AML_BANK_FIELD_OP:
 140         case AML_INDEX_FIELD_OP:
 141
 142                 node = NULL;
 143                 status = AE_OK;
 144                 break;
 145
 146         case AML_INT_NAMEPATH_OP:
 147                 /*
 148                  * The name_path is an object reference to an existing object.
 149                  * Don't enter the name into the namespace, but look it up
 150                  * for use later.
 151                  */
 152                 status =
 153                     acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
 154                                    object_type, ACPI_IMODE_EXECUTE,
 155                                    ACPI_NS_SEARCH_PARENT, walk_state, &(node));
 156                 break;
 157
 158         case AML_SCOPE_OP:
 159
 160                 /* Special case for Scope(\) -> refers to the Root node */
 161
 162                 if (op && (op->named.node == acpi_gbl_root_node)) {
 163                         node = op->named.node;
 164
 165                         status =
 166                             acpi_ds_scope_stack_push(node, object_type,
 167                                                      walk_state);
 168                         if (ACPI_FAILURE(status)) {
 169                                 return_ACPI_STATUS(status);
 170                         }
 171                 } else {
 172                         /*
 173                          * The Path is an object reference to an existing object.
 174                          * Don't enter the name into the namespace, but look it up
 175                          * for use later.
 176                          */
 177                         status =
 178                             acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
 179                                            object_type, ACPI_IMODE_EXECUTE,
 180                                            ACPI_NS_SEARCH_PARENT, walk_state,
 181                                            &(node));
 182                         if (ACPI_FAILURE(status)) {
 183 #ifdef ACPI_ASL_COMPILER
 184                                 if (status == AE_NOT_FOUND) {
 185                                         status = AE_OK;
 186                                 } else {
 187                                         ACPI_ERROR_NAMESPACE(walk_state->
 188                                                              scope_info,
 189                                                              buffer_ptr,
 190                                                              status);
 191                                 }
 192 #else
 193                                 ACPI_ERROR_NAMESPACE(walk_state->scope_info,
 194                                                      buffer_ptr, status);
 195 #endif
 196                                 return_ACPI_STATUS(status);
 197                         }
 198                 }
 199
 200                 /*
 201                  * We must check to make sure that the target is
 202                  * one of the opcodes that actually opens a scope
 203                  */
 204                 switch (node->type) {
 205                 case ACPI_TYPE_ANY:
 206                 case ACPI_TYPE_LOCAL_SCOPE:     /* Scope */
 207                 case ACPI_TYPE_DEVICE:
 208                 case ACPI_TYPE_POWER:
 209                 case ACPI_TYPE_PROCESSOR:
 210                 case ACPI_TYPE_THERMAL:
 211
 212                         /* These are acceptable types */
 213                         break;
 214
 215                 case ACPI_TYPE_INTEGER:
 216                 case ACPI_TYPE_STRING:
 217                 case ACPI_TYPE_BUFFER:
 218
 219                         /*
 220                          * These types we will allow, but we will change the type.
 221                          * This enables some existing code of the form:
 222                          *
 223                          *  Name (DEB, 0)
 224                          *  Scope (DEB) { ... }
 225                          */
 226                         ACPI_WARNING((AE_INFO,
 227                                       "Type override - [%4.4s] had invalid type (%s) "
 228                                       "for Scope operator, changed to type ANY",
 229                                       acpi_ut_get_node_name(node),
 230                                       acpi_ut_get_type_name(node->type)));
 231
 232                         node->type = ACPI_TYPE_ANY;
 233                         walk_state->scope_info->common.value = ACPI_TYPE_ANY;
 234                         break;
 235
 236                 case ACPI_TYPE_METHOD:
 237
 238                         /*
 239                          * Allow scope change to root during execution of module-level
 240                          * code. Root is typed METHOD during this time.
 241                          */
 242                         if ((node == acpi_gbl_root_node) &&
 243                             (walk_state->
 244                              parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
 245                                 break;
 246                         }
 247
 248                         /*lint -fallthrough */
 249
 250                 default:
 251
 252                         /* All other types are an error */
 253
 254                         ACPI_ERROR((AE_INFO,
 255                                     "Invalid type (%s) for target of "
 256                                     "Scope operator [%4.4s] (Cannot override)",
 257                                     acpi_ut_get_type_name(node->type),
 258                                     acpi_ut_get_node_name(node)));
 259
 260                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 261                 }
 262                 break;
 263
 264         default:
 265
 266                 /* All other opcodes */
 267
 268                 if (op && op->common.node) {
 269
 270                         /* This op/node was previously entered into the namespace */
 271
 272                         node = op->common.node;
 273
 274                         if (acpi_ns_opens_scope(object_type)) {
 275                                 status =
 276                                     acpi_ds_scope_stack_push(node, object_type,
 277                                                              walk_state);
 278                                 if (ACPI_FAILURE(status)) {
 279                                         return_ACPI_STATUS(status);
 280                                 }
 281                         }
 282
 283                         return_ACPI_STATUS(AE_OK);
 284                 }
 285
 286                 /*
 287                  * Enter the named type into the internal namespace. We enter the name
 288                  * as we go downward in the parse tree. Any necessary subobjects that
 289                  * involve arguments to the opcode must be created as we go back up the
 290                  * parse tree later.
 291                  *
 292                  * Note: Name may already exist if we are executing a deferred opcode.
 293                  */
 294                 if (walk_state->deferred_node) {
 295
 296                         /* This name is already in the namespace, get the node */
 297
 298                         node = walk_state->deferred_node;
 299                         status = AE_OK;
 300                         break;
 301                 }
 302
 303                 flags = ACPI_NS_NO_UPSEARCH;
 304                 if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
 305
 306                         /* Execution mode, node cannot already exist, node is temporary */
 307
 308                         flags |= ACPI_NS_ERROR_IF_FOUND;
 309
 310                         if (!
 311                             (walk_state->
 312                              parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
 313                                 flags |= ACPI_NS_TEMPORARY;
 314                         }
 315                 }
 316 #ifdef ACPI_ASL_COMPILER
 317
 318                 /*
 319                  * Do not open a scope for AML_EXTERNAL_OP
 320                  * acpi_ns_lookup can open a new scope based on the object type
 321                  * of this op. AML_EXTERNAL_OP is a declaration rather than a
 322                  * definition. In the case that this external is a method object,
 323                  * acpi_ns_lookup will open a new scope. However, an AML_EXTERNAL_OP
 324                  * associated with the ACPI_TYPE_METHOD is a declaration, rather than
 325                  * a definition. Flags is set to avoid opening a scope for any
 326                  * AML_EXTERNAL_OP.
 327                  */
 328                 if (walk_state->opcode == AML_EXTERNAL_OP) {
 329                         flags |= ACPI_NS_DONT_OPEN_SCOPE;
 330                 }
 331 #endif
 332
 333                 /* Add new entry or lookup existing entry */
 334
 335                 status =
 336                     acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
 337                                    object_type, ACPI_IMODE_LOAD_PASS2, flags,
 338                                    walk_state, &node);
 339
 340                 if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
 341                         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 342                                           "***New Node [%4.4s] %p is temporary\n",
 343                                           acpi_ut_get_node_name(node), node));
 344                 }
 345                 break;
 346         }
 347
 348         if (ACPI_FAILURE(status)) {
 349                 ACPI_ERROR_NAMESPACE(walk_state->scope_info,
 350                                      buffer_ptr, status);
 351                 return_ACPI_STATUS(status);
 352         }
 353
 354         if (!op) {
 355
 356                 /* Create a new op */
 357
 358                 op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
 359                 if (!op) {
 360                         return_ACPI_STATUS(AE_NO_MEMORY);
 361                 }
 362
 363                 /* Initialize the new op */
 364
 365                 if (node) {
 366                         op->named.name = node->name.integer;
 367                 }
 368                 *out_op = op;
 369         }
 370
 371         /*
 372          * Put the Node in the "op" object that the parser uses, so we
 373          * can get it again quickly when this scope is closed
 374          */
 375         op->common.node = node;
 376         return_ACPI_STATUS(status);
 377 }
 378
 379 /*******************************************************************************
 380  *
 381  * FUNCTION:    acpi_ds_load2_end_op
 382  *
 383  * PARAMETERS:  walk_state      - Current state of the parse tree walk
 384  *
 385  * RETURN:      Status
 386  *
 387  * DESCRIPTION: Ascending callback used during the loading of the namespace,
 388  *              both control methods and everything else.
 389  *
 390  ******************************************************************************/
 391
 392 acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
 393 {
 394         union acpi_parse_object *op;
 395         acpi_status status = AE_OK;
 396         acpi_object_type object_type;
 397         struct acpi_namespace_node *node;
 398         union acpi_parse_object *arg;
 399         struct acpi_namespace_node *new_node;
 400 #ifndef ACPI_NO_METHOD_EXECUTION
 401         u32 i;
 402         u8 region_space;
 403 #endif
 404
 405         ACPI_FUNCTION_TRACE(ds_load2_end_op);
 406
 407         op = walk_state->op;
 408         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
 409                           walk_state->op_info->name, op, walk_state));
 410
 411         /* Check if opcode had an associated namespace object */
 412
 413         if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
 414                 return_ACPI_STATUS(AE_OK);
 415         }
 416
 417         if (op->common.aml_opcode == AML_SCOPE_OP) {
 418                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 419                                   "Ending scope Op=%p State=%p\n", op,
 420                                   walk_state));
 421         }
 422
 423         object_type = walk_state->op_info->object_type;
 424
 425         /*
 426          * Get the Node/name from the earlier lookup
 427          * (It was saved in the *op structure)
 428          */
 429         node = op->common.node;
 430
 431         /*
 432          * Put the Node on the object stack (Contains the ACPI Name of
 433          * this object)
 434          */
 435         walk_state->operands[0] = (void *)node;
 436         walk_state->num_operands = 1;
 437
 438         /* Pop the scope stack */
 439
 440         if (acpi_ns_opens_scope(object_type) &&
 441             (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
 442                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 443                                   "(%s) Popping scope for Op %p\n",
 444                                   acpi_ut_get_type_name(object_type), op));
 445
 446                 status = acpi_ds_scope_stack_pop(walk_state);
 447                 if (ACPI_FAILURE(status)) {
 448                         goto cleanup;
 449                 }
 450         }
 451
 452         /*
 453          * Named operations are as follows:
 454          *
 455          * AML_ALIAS
 456          * AML_BANKFIELD
 457          * AML_CREATEBITFIELD
 458          * AML_CREATEBYTEFIELD
 459          * AML_CREATEDWORDFIELD
 460          * AML_CREATEFIELD
 461          * AML_CREATEQWORDFIELD
 462          * AML_CREATEWORDFIELD
 463          * AML_DATA_REGION
 464          * AML_DEVICE
 465          * AML_EVENT
 466          * AML_FIELD
 467          * AML_INDEXFIELD
 468          * AML_METHOD
 469          * AML_METHODCALL
 470          * AML_MUTEX
 471          * AML_NAME
 472          * AML_NAMEDFIELD
 473          * AML_OPREGION
 474          * AML_POWERRES
 475          * AML_PROCESSOR
 476          * AML_SCOPE
 477          * AML_THERMALZONE
 478          */
 479
 480         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 481                           "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
 482                           acpi_ps_get_opcode_name(op->common.aml_opcode),
 483                           walk_state, op, node));
 484
 485         /* Decode the opcode */
 486
 487         arg = op->common.value.arg;
 488
 489         switch (walk_state->op_info->type) {
 490 #ifndef ACPI_NO_METHOD_EXECUTION
 491
 492         case AML_TYPE_CREATE_FIELD:
 493                 /*
 494                  * Create the field object, but the field buffer and index must
 495                  * be evaluated later during the execution phase
 496                  */
 497                 status = acpi_ds_create_buffer_field(op, walk_state);
 498                 break;
 499
 500         case AML_TYPE_NAMED_FIELD:
 501                 /*
 502                  * If we are executing a method, initialize the field
 503                  */
 504                 if (walk_state->method_node) {
 505                         status = acpi_ds_init_field_objects(op, walk_state);
 506                 }
 507
 508                 switch (op->common.aml_opcode) {
 509                 case AML_INDEX_FIELD_OP:
 510
 511                         status =
 512                             acpi_ds_create_index_field(op,
 513                                                        (acpi_handle)arg->common.
 514                                                        node, walk_state);
 515                         break;
 516
 517                 case AML_BANK_FIELD_OP:
 518
 519                         status =
 520                             acpi_ds_create_bank_field(op, arg->common.node,
 521                                                       walk_state);
 522                         break;
 523
 524                 case AML_FIELD_OP:
 525
 526                         status =
 527                             acpi_ds_create_field(op, arg->common.node,
 528                                                  walk_state);
 529                         break;
 530
 531                 default:
 532
 533                         /* All NAMED_FIELD opcodes must be handled above */
 534                         break;
 535                 }
 536                 break;
 537
 538         case AML_TYPE_NAMED_SIMPLE:
 539
 540                 status = acpi_ds_create_operands(walk_state, arg);
 541                 if (ACPI_FAILURE(status)) {
 542                         goto cleanup;
 543                 }
 544
 545                 switch (op->common.aml_opcode) {
 546                 case AML_PROCESSOR_OP:
 547
 548                         status = acpi_ex_create_processor(walk_state);
 549                         break;
 550
 551                 case AML_POWER_RESOURCE_OP:
 552
 553                         status = acpi_ex_create_power_resource(walk_state);
 554                         break;
 555
 556                 case AML_MUTEX_OP:
 557
 558                         status = acpi_ex_create_mutex(walk_state);
 559                         break;
 560
 561                 case AML_EVENT_OP:
 562
 563                         status = acpi_ex_create_event(walk_state);
 564                         break;
 565
 566                 case AML_ALIAS_OP:
 567
 568                         status = acpi_ex_create_alias(walk_state);
 569                         break;
 570
 571                 default:
 572
 573                         /* Unknown opcode */
 574
 575                         status = AE_OK;
 576                         goto cleanup;
 577                 }
 578
 579                 /* Delete operands */
 580
 581                 for (i = 1; i < walk_state->num_operands; i++) {
 582                         acpi_ut_remove_reference(walk_state->operands[i]);
 583                         walk_state->operands[i] = NULL;
 584                 }
 585
 586                 break;
 587 #endif                          /* ACPI_NO_METHOD_EXECUTION */
 588
 589         case AML_TYPE_NAMED_COMPLEX:
 590
 591                 switch (op->common.aml_opcode) {
 592 #ifndef ACPI_NO_METHOD_EXECUTION
 593                 case AML_REGION_OP:
 594                 case AML_DATA_REGION_OP:
 595
 596                         if (op->common.aml_opcode == AML_REGION_OP) {
 597                                 region_space = (acpi_adr_space_type)
 598                                     ((op->common.value.arg)->common.value.
 599                                      integer);
 600                         } else {
 601                                 region_space = ACPI_ADR_SPACE_DATA_TABLE;
 602                         }
 603
 604                         /*
 605                          * The op_region is not fully parsed at this time. The only valid
 606                          * argument is the space_id. (We must save the address of the
 607                          * AML of the address and length operands)
 608                          *
 609                          * If we have a valid region, initialize it. The namespace is
 610                          * unlocked at this point.
 611                          *
 612                          * Need to unlock interpreter if it is locked (if we are running
 613                          * a control method), in order to allow _REG methods to be run
 614                          * during acpi_ev_initialize_region.
 615                          */
 616                         if (walk_state->method_node) {
 617                                 /*
 618                                  * Executing a method: initialize the region and unlock
 619                                  * the interpreter
 620                                  */
 621                                 status = acpi_ex_create_region(op->named.data,
 622                                                                op->named.length,
 623                                                                region_space,
 624                                                                walk_state);
 625                                 if (ACPI_FAILURE(status)) {
 626                                         return_ACPI_STATUS(status);
 627                                 }
 628                         }
 629
 630                         status =
 631                             acpi_ev_initialize_region
 632                             (acpi_ns_get_attached_object(node));
 633                         break;
 634
 635                 case AML_NAME_OP:
 636
 637                         status = acpi_ds_create_node(walk_state, node, op);
 638                         break;
 639
 640                 case AML_METHOD_OP:
 641                         /*
 642                          * method_op pkg_length name_string method_flags term_list
 643                          *
 644                          * Note: We must create the method node/object pair as soon as we
 645                          * see the method declaration. This allows later pass1 parsing
 646                          * of invocations of the method (need to know the number of
 647                          * arguments.)
 648                          */
 649                         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 650                                           "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
 651                                           walk_state, op, op->named.node));
 652
 653                         if (!acpi_ns_get_attached_object(op->named.node)) {
 654                                 walk_state->operands[0] =
 655                                     ACPI_CAST_PTR(void, op->named.node);
 656                                 walk_state->num_operands = 1;
 657
 658                                 status =
 659                                     acpi_ds_create_operands(walk_state,
 660                                                             op->common.value.
 661                                                             arg);
 662                                 if (ACPI_SUCCESS(status)) {
 663                                         status =
 664                                             acpi_ex_create_method(op->named.
 665                                                                   data,
 666                                                                   op->named.
 667                                                                   length,
 668                                                                   walk_state);
 669                                 }
 670
 671                                 walk_state->operands[0] = NULL;
 672                                 walk_state->num_operands = 0;
 673
 674                                 if (ACPI_FAILURE(status)) {
 675                                         return_ACPI_STATUS(status);
 676                                 }
 677                         }
 678                         break;
 679
 680 #endif                          /* ACPI_NO_METHOD_EXECUTION */
 681
 682                 default:
 683
 684                         /* All NAMED_COMPLEX opcodes must be handled above */
 685                         break;
 686                 }
 687                 break;
 688
 689         case AML_CLASS_INTERNAL:
 690
 691                 /* case AML_INT_NAMEPATH_OP: */
 692                 break;
 693
 694         case AML_CLASS_METHOD_CALL:
 695
 696                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 697                                   "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
 698                                   walk_state, op, node));
 699
 700                 /*
 701                  * Lookup the method name and save the Node
 702                  */
 703                 status =
 704                     acpi_ns_lookup(walk_state->scope_info,
 705                                    arg->common.value.string, ACPI_TYPE_ANY,
 706                                    ACPI_IMODE_LOAD_PASS2,
 707                                    ACPI_NS_SEARCH_PARENT |
 708                                    ACPI_NS_DONT_OPEN_SCOPE, walk_state,
 709                                    &(new_node));
 710                 if (ACPI_SUCCESS(status)) {
 711                         /*
 712                          * Make sure that what we found is indeed a method
 713                          * We didn't search for a method on purpose, to see if the name
 714                          * would resolve
 715                          */
 716                         if (new_node->type != ACPI_TYPE_METHOD) {
 717                                 status = AE_AML_OPERAND_TYPE;
 718                         }
 719
 720                         /* We could put the returned object (Node) on the object stack for
 721                          * later, but for now, we will put it in the "op" object that the
 722                          * parser uses, so we can get it again at the end of this scope
 723                          */
 724                         op->common.node = new_node;
 725                 } else {
 726                         ACPI_ERROR_NAMESPACE(walk_state->scope_info,
 727                                              arg->common.value.string, status);
 728                 }
 729                 break;
 730
 731         default:
 732
 733                 break;
 734         }
 735
 736 cleanup:
 737
 738         /* Remove the Node pushed at the very beginning */
 739
 740         walk_state->operands[0] = NULL;
 741         walk_state->num_operands = 0;
 742         return_ACPI_STATUS(status);
 743 }