| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: dswload2 - Dispatcher second pass namespace load callbacks |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, 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.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 | * |
| 59 | * FUNCTION: AcpiDsLoad2BeginOp |
| 60 | * |
| 61 | * PARAMETERS: WalkState - Current state of the parse tree walk |
| 62 | * OutOp - Wher to return op if a new one is created |
| 63 | * |
| 64 | * RETURN: Status |
| 65 | * |
| 66 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. |
| 67 | * |
| 68 | ******************************************************************************/ |
| 69 | |
| 70 | ACPI_STATUS |
| 71 | AcpiDsLoad2BeginOp ( |
| 72 | ACPI_WALK_STATE *WalkState, |
| 73 | ACPI_PARSE_OBJECT **OutOp) |
| 74 | { |
| 75 | ACPI_PARSE_OBJECT *Op; |
| 76 | ACPI_NAMESPACE_NODE *Node; |
| 77 | ACPI_STATUS Status; |
| 78 | ACPI_OBJECT_TYPE ObjectType; |
| 79 | char *BufferPtr; |
| 80 | UINT32 Flags; |
| 81 | |
| 82 | |
| 83 | ACPI_FUNCTION_TRACE (DsLoad2BeginOp); |
| 84 | |
| 85 | |
| 86 | Op = WalkState->Op; |
| 87 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n" , Op, WalkState)); |
| 88 | |
| 89 | if (Op) |
| 90 | { |
| 91 | if ((WalkState->ControlState) && |
| 92 | (WalkState->ControlState->Common.State == |
| 93 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) |
| 94 | { |
| 95 | /* We are executing a while loop outside of a method */ |
| 96 | |
| 97 | Status = AcpiDsExecBeginOp (WalkState, OutOp); |
| 98 | return_ACPI_STATUS (Status); |
| 99 | } |
| 100 | |
| 101 | /* We only care about Namespace opcodes here */ |
| 102 | |
| 103 | if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && |
| 104 | (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || |
| 105 | (!(WalkState->OpInfo->Flags & AML_NAMED))) |
| 106 | { |
| 107 | return_ACPI_STATUS (AE_OK); |
| 108 | } |
| 109 | |
| 110 | /* Get the name we are going to enter or lookup in the namespace */ |
| 111 | |
| 112 | if (WalkState->Opcode == AML_INT_NAMEPATH_OP) |
| 113 | { |
| 114 | /* For Namepath op, get the path string */ |
| 115 | |
| 116 | BufferPtr = Op->Common.Value.String; |
| 117 | if (!BufferPtr) |
| 118 | { |
| 119 | /* No name, just exit */ |
| 120 | |
| 121 | return_ACPI_STATUS (AE_OK); |
| 122 | } |
| 123 | } |
| 124 | else |
| 125 | { |
| 126 | /* Get name from the op */ |
| 127 | |
| 128 | BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name); |
| 129 | } |
| 130 | } |
| 131 | else |
| 132 | { |
| 133 | /* Get the namestring from the raw AML */ |
| 134 | |
| 135 | BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); |
| 136 | } |
| 137 | |
| 138 | /* Map the opcode into an internal object type */ |
| 139 | |
| 140 | ObjectType = WalkState->OpInfo->ObjectType; |
| 141 | |
| 142 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 143 | "State=%p Op=%p Type=%X\n" , WalkState, Op, ObjectType)); |
| 144 | |
| 145 | switch (WalkState->Opcode) |
| 146 | { |
| 147 | case AML_FIELD_OP: |
| 148 | case AML_BANK_FIELD_OP: |
| 149 | case AML_INDEX_FIELD_OP: |
| 150 | |
| 151 | Node = NULL; |
| 152 | Status = AE_OK; |
| 153 | break; |
| 154 | |
| 155 | case AML_INT_NAMEPATH_OP: |
| 156 | /* |
| 157 | * The NamePath is an object reference to an existing object. |
| 158 | * Don't enter the name into the namespace, but look it up |
| 159 | * for use later. |
| 160 | */ |
| 161 | Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, |
| 162 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
| 163 | WalkState, &(Node)); |
| 164 | break; |
| 165 | |
| 166 | case AML_SCOPE_OP: |
| 167 | |
| 168 | /* Special case for Scope(\) -> refers to the Root node */ |
| 169 | |
| 170 | if (Op && (Op->Named.Node == AcpiGbl_RootNode)) |
| 171 | { |
| 172 | Node = Op->Named.Node; |
| 173 | |
| 174 | Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
| 175 | if (ACPI_FAILURE (Status)) |
| 176 | { |
| 177 | return_ACPI_STATUS (Status); |
| 178 | } |
| 179 | } |
| 180 | else |
| 181 | { |
| 182 | /* |
| 183 | * The Path is an object reference to an existing object. |
| 184 | * Don't enter the name into the namespace, but look it up |
| 185 | * for use later. |
| 186 | */ |
| 187 | Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, |
| 188 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
| 189 | WalkState, &(Node)); |
| 190 | if (ACPI_FAILURE (Status)) |
| 191 | { |
| 192 | #ifdef ACPI_ASL_COMPILER |
| 193 | if (Status == AE_NOT_FOUND) |
| 194 | { |
| 195 | Status = AE_OK; |
| 196 | } |
| 197 | else |
| 198 | { |
| 199 | ACPI_ERROR_NAMESPACE (BufferPtr, Status); |
| 200 | } |
| 201 | #else |
| 202 | ACPI_ERROR_NAMESPACE (BufferPtr, Status); |
| 203 | #endif |
| 204 | return_ACPI_STATUS (Status); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | /* |
| 209 | * We must check to make sure that the target is |
| 210 | * one of the opcodes that actually opens a scope |
| 211 | */ |
| 212 | switch (Node->Type) |
| 213 | { |
| 214 | case ACPI_TYPE_ANY: |
| 215 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
| 216 | case ACPI_TYPE_DEVICE: |
| 217 | case ACPI_TYPE_POWER: |
| 218 | case ACPI_TYPE_PROCESSOR: |
| 219 | case ACPI_TYPE_THERMAL: |
| 220 | |
| 221 | /* These are acceptable types */ |
| 222 | break; |
| 223 | |
| 224 | case ACPI_TYPE_INTEGER: |
| 225 | case ACPI_TYPE_STRING: |
| 226 | case ACPI_TYPE_BUFFER: |
| 227 | |
| 228 | /* |
| 229 | * These types we will allow, but we will change the type. |
| 230 | * This enables some existing code of the form: |
| 231 | * |
| 232 | * Name (DEB, 0) |
| 233 | * Scope (DEB) { ... } |
| 234 | */ |
| 235 | ACPI_WARNING ((AE_INFO, |
| 236 | "Type override - [%4.4s] had invalid type (%s) " |
| 237 | "for Scope operator, changed to type ANY" , |
| 238 | AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type))); |
| 239 | |
| 240 | Node->Type = ACPI_TYPE_ANY; |
| 241 | WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; |
| 242 | break; |
| 243 | |
| 244 | case ACPI_TYPE_METHOD: |
| 245 | |
| 246 | /* |
| 247 | * Allow scope change to root during execution of module-level |
| 248 | * code. Root is typed METHOD during this time. |
| 249 | */ |
| 250 | if ((Node == AcpiGbl_RootNode) && |
| 251 | (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) |
| 252 | { |
| 253 | break; |
| 254 | } |
| 255 | |
| 256 | /*lint -fallthrough */ |
| 257 | |
| 258 | default: |
| 259 | |
| 260 | /* All other types are an error */ |
| 261 | |
| 262 | ACPI_ERROR ((AE_INFO, |
| 263 | "Invalid type (%s) for target of " |
| 264 | "Scope operator [%4.4s] (Cannot override)" , |
| 265 | AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node))); |
| 266 | |
| 267 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 268 | } |
| 269 | break; |
| 270 | |
| 271 | default: |
| 272 | |
| 273 | /* All other opcodes */ |
| 274 | |
| 275 | if (Op && Op->Common.Node) |
| 276 | { |
| 277 | /* This op/node was previously entered into the namespace */ |
| 278 | |
| 279 | Node = Op->Common.Node; |
| 280 | |
| 281 | if (AcpiNsOpensScope (ObjectType)) |
| 282 | { |
| 283 | Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
| 284 | if (ACPI_FAILURE (Status)) |
| 285 | { |
| 286 | return_ACPI_STATUS (Status); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | return_ACPI_STATUS (AE_OK); |
| 291 | } |
| 292 | |
| 293 | /* |
| 294 | * Enter the named type into the internal namespace. We enter the name |
| 295 | * as we go downward in the parse tree. Any necessary subobjects that |
| 296 | * involve arguments to the opcode must be created as we go back up the |
| 297 | * parse tree later. |
| 298 | * |
| 299 | * Note: Name may already exist if we are executing a deferred opcode. |
| 300 | */ |
| 301 | if (WalkState->DeferredNode) |
| 302 | { |
| 303 | /* This name is already in the namespace, get the node */ |
| 304 | |
| 305 | Node = WalkState->DeferredNode; |
| 306 | Status = AE_OK; |
| 307 | break; |
| 308 | } |
| 309 | |
| 310 | Flags = ACPI_NS_NO_UPSEARCH; |
| 311 | if (WalkState->PassNumber == ACPI_IMODE_EXECUTE) |
| 312 | { |
| 313 | /* Execution mode, node cannot already exist, node is temporary */ |
| 314 | |
| 315 | Flags |= ACPI_NS_ERROR_IF_FOUND; |
| 316 | |
| 317 | if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) |
| 318 | { |
| 319 | Flags |= ACPI_NS_TEMPORARY; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | /* Add new entry or lookup existing entry */ |
| 324 | |
| 325 | Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, |
| 326 | ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node); |
| 327 | |
| 328 | if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY)) |
| 329 | { |
| 330 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 331 | "***New Node [%4.4s] %p is temporary\n" , |
| 332 | AcpiUtGetNodeName (Node), Node)); |
| 333 | } |
| 334 | break; |
| 335 | } |
| 336 | |
| 337 | if (ACPI_FAILURE (Status)) |
| 338 | { |
| 339 | ACPI_ERROR_NAMESPACE (BufferPtr, Status); |
| 340 | return_ACPI_STATUS (Status); |
| 341 | } |
| 342 | |
| 343 | if (!Op) |
| 344 | { |
| 345 | /* Create a new op */ |
| 346 | |
| 347 | Op = AcpiPsAllocOp (WalkState->Opcode, WalkState->Aml); |
| 348 | if (!Op) |
| 349 | { |
| 350 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 351 | } |
| 352 | |
| 353 | /* Initialize the new op */ |
| 354 | |
| 355 | if (Node) |
| 356 | { |
| 357 | Op->Named.Name = Node->Name.Integer; |
| 358 | } |
| 359 | *OutOp = Op; |
| 360 | } |
| 361 | |
| 362 | /* |
| 363 | * Put the Node in the "op" object that the parser uses, so we |
| 364 | * can get it again quickly when this scope is closed |
| 365 | */ |
| 366 | Op->Common.Node = Node; |
| 367 | return_ACPI_STATUS (Status); |
| 368 | } |
| 369 | |
| 370 | |
| 371 | /******************************************************************************* |
| 372 | * |
| 373 | * FUNCTION: AcpiDsLoad2EndOp |
| 374 | * |
| 375 | * PARAMETERS: WalkState - Current state of the parse tree walk |
| 376 | * |
| 377 | * RETURN: Status |
| 378 | * |
| 379 | * DESCRIPTION: Ascending callback used during the loading of the namespace, |
| 380 | * both control methods and everything else. |
| 381 | * |
| 382 | ******************************************************************************/ |
| 383 | |
| 384 | ACPI_STATUS |
| 385 | AcpiDsLoad2EndOp ( |
| 386 | ACPI_WALK_STATE *WalkState) |
| 387 | { |
| 388 | ACPI_PARSE_OBJECT *Op; |
| 389 | ACPI_STATUS Status = AE_OK; |
| 390 | ACPI_OBJECT_TYPE ObjectType; |
| 391 | ACPI_NAMESPACE_NODE *Node; |
| 392 | ACPI_PARSE_OBJECT *Arg; |
| 393 | ACPI_NAMESPACE_NODE *NewNode; |
| 394 | #ifndef ACPI_NO_METHOD_EXECUTION |
| 395 | UINT32 i; |
| 396 | UINT8 RegionSpace; |
| 397 | #endif |
| 398 | |
| 399 | |
| 400 | ACPI_FUNCTION_TRACE (DsLoad2EndOp); |
| 401 | |
| 402 | Op = WalkState->Op; |
| 403 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n" , |
| 404 | WalkState->OpInfo->Name, Op, WalkState)); |
| 405 | |
| 406 | /* Check if opcode had an associated namespace object */ |
| 407 | |
| 408 | if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) |
| 409 | { |
| 410 | return_ACPI_STATUS (AE_OK); |
| 411 | } |
| 412 | |
| 413 | if (Op->Common.AmlOpcode == AML_SCOPE_OP) |
| 414 | { |
| 415 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 416 | "Ending scope Op=%p State=%p\n" , Op, WalkState)); |
| 417 | } |
| 418 | |
| 419 | ObjectType = WalkState->OpInfo->ObjectType; |
| 420 | |
| 421 | /* |
| 422 | * Get the Node/name from the earlier lookup |
| 423 | * (It was saved in the *op structure) |
| 424 | */ |
| 425 | Node = Op->Common.Node; |
| 426 | |
| 427 | /* |
| 428 | * Put the Node on the object stack (Contains the ACPI Name of |
| 429 | * this object) |
| 430 | */ |
| 431 | WalkState->Operands[0] = (void *) Node; |
| 432 | WalkState->NumOperands = 1; |
| 433 | |
| 434 | /* Pop the scope stack */ |
| 435 | |
| 436 | if (AcpiNsOpensScope (ObjectType) && |
| 437 | (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) |
| 438 | { |
| 439 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n" , |
| 440 | AcpiUtGetTypeName (ObjectType), Op)); |
| 441 | |
| 442 | Status = AcpiDsScopeStackPop (WalkState); |
| 443 | if (ACPI_FAILURE (Status)) |
| 444 | { |
| 445 | goto Cleanup; |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | /* |
| 450 | * Named operations are as follows: |
| 451 | * |
| 452 | * AML_ALIAS |
| 453 | * AML_BANKFIELD |
| 454 | * AML_CREATEBITFIELD |
| 455 | * AML_CREATEBYTEFIELD |
| 456 | * AML_CREATEDWORDFIELD |
| 457 | * AML_CREATEFIELD |
| 458 | * AML_CREATEQWORDFIELD |
| 459 | * AML_CREATEWORDFIELD |
| 460 | * AML_DATA_REGION |
| 461 | * AML_DEVICE |
| 462 | * AML_EVENT |
| 463 | * AML_FIELD |
| 464 | * AML_INDEXFIELD |
| 465 | * AML_METHOD |
| 466 | * AML_METHODCALL |
| 467 | * AML_MUTEX |
| 468 | * AML_NAME |
| 469 | * AML_NAMEDFIELD |
| 470 | * AML_OPREGION |
| 471 | * AML_POWERRES |
| 472 | * AML_PROCESSOR |
| 473 | * AML_SCOPE |
| 474 | * AML_THERMALZONE |
| 475 | */ |
| 476 | |
| 477 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 478 | "Create-Load [%s] State=%p Op=%p NamedObj=%p\n" , |
| 479 | AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); |
| 480 | |
| 481 | /* Decode the opcode */ |
| 482 | |
| 483 | Arg = Op->Common.Value.Arg; |
| 484 | |
| 485 | switch (WalkState->OpInfo->Type) |
| 486 | { |
| 487 | #ifndef ACPI_NO_METHOD_EXECUTION |
| 488 | |
| 489 | case AML_TYPE_CREATE_FIELD: |
| 490 | /* |
| 491 | * Create the field object, but the field buffer and index must |
| 492 | * be evaluated later during the execution phase |
| 493 | */ |
| 494 | Status = AcpiDsCreateBufferField (Op, WalkState); |
| 495 | break; |
| 496 | |
| 497 | case AML_TYPE_NAMED_FIELD: |
| 498 | /* |
| 499 | * If we are executing a method, initialize the field |
| 500 | */ |
| 501 | if (WalkState->MethodNode) |
| 502 | { |
| 503 | Status = AcpiDsInitFieldObjects (Op, WalkState); |
| 504 | } |
| 505 | |
| 506 | switch (Op->Common.AmlOpcode) |
| 507 | { |
| 508 | case AML_INDEX_FIELD_OP: |
| 509 | |
| 510 | Status = AcpiDsCreateIndexField ( |
| 511 | Op, (ACPI_HANDLE) Arg->Common.Node, WalkState); |
| 512 | break; |
| 513 | |
| 514 | case AML_BANK_FIELD_OP: |
| 515 | |
| 516 | Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); |
| 517 | break; |
| 518 | |
| 519 | case AML_FIELD_OP: |
| 520 | |
| 521 | Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); |
| 522 | break; |
| 523 | |
| 524 | default: |
| 525 | |
| 526 | /* All NAMED_FIELD opcodes must be handled above */ |
| 527 | break; |
| 528 | } |
| 529 | break; |
| 530 | |
| 531 | case AML_TYPE_NAMED_SIMPLE: |
| 532 | |
| 533 | Status = AcpiDsCreateOperands (WalkState, Arg); |
| 534 | if (ACPI_FAILURE (Status)) |
| 535 | { |
| 536 | goto Cleanup; |
| 537 | } |
| 538 | |
| 539 | switch (Op->Common.AmlOpcode) |
| 540 | { |
| 541 | case AML_PROCESSOR_OP: |
| 542 | |
| 543 | Status = AcpiExCreateProcessor (WalkState); |
| 544 | break; |
| 545 | |
| 546 | case AML_POWER_RES_OP: |
| 547 | |
| 548 | Status = AcpiExCreatePowerResource (WalkState); |
| 549 | break; |
| 550 | |
| 551 | case AML_MUTEX_OP: |
| 552 | |
| 553 | Status = AcpiExCreateMutex (WalkState); |
| 554 | break; |
| 555 | |
| 556 | case AML_EVENT_OP: |
| 557 | |
| 558 | Status = AcpiExCreateEvent (WalkState); |
| 559 | break; |
| 560 | |
| 561 | case AML_ALIAS_OP: |
| 562 | |
| 563 | Status = AcpiExCreateAlias (WalkState); |
| 564 | break; |
| 565 | |
| 566 | default: |
| 567 | |
| 568 | /* Unknown opcode */ |
| 569 | |
| 570 | Status = AE_OK; |
| 571 | goto Cleanup; |
| 572 | } |
| 573 | |
| 574 | /* Delete operands */ |
| 575 | |
| 576 | for (i = 1; i < WalkState->NumOperands; i++) |
| 577 | { |
| 578 | AcpiUtRemoveReference (WalkState->Operands[i]); |
| 579 | WalkState->Operands[i] = NULL; |
| 580 | } |
| 581 | |
| 582 | break; |
| 583 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
| 584 | |
| 585 | case AML_TYPE_NAMED_COMPLEX: |
| 586 | |
| 587 | switch (Op->Common.AmlOpcode) |
| 588 | { |
| 589 | #ifndef ACPI_NO_METHOD_EXECUTION |
| 590 | case AML_REGION_OP: |
| 591 | case AML_DATA_REGION_OP: |
| 592 | |
| 593 | if (Op->Common.AmlOpcode == AML_REGION_OP) |
| 594 | { |
| 595 | RegionSpace = (ACPI_ADR_SPACE_TYPE) |
| 596 | ((Op->Common.Value.Arg)->Common.Value.Integer); |
| 597 | } |
| 598 | else |
| 599 | { |
| 600 | RegionSpace = ACPI_ADR_SPACE_DATA_TABLE; |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * The OpRegion is not fully parsed at this time. The only valid |
| 605 | * argument is the SpaceId. (We must save the address of the |
| 606 | * AML of the address and length operands) |
| 607 | * |
| 608 | * If we have a valid region, initialize it. The namespace is |
| 609 | * unlocked at this point. |
| 610 | * |
| 611 | * Need to unlock interpreter if it is locked (if we are running |
| 612 | * a control method), in order to allow _REG methods to be run |
| 613 | * during AcpiEvInitializeRegion. |
| 614 | */ |
| 615 | if (WalkState->MethodNode) |
| 616 | { |
| 617 | /* |
| 618 | * Executing a method: initialize the region and unlock |
| 619 | * the interpreter |
| 620 | */ |
| 621 | Status = AcpiExCreateRegion (Op->Named.Data, |
| 622 | Op->Named.Length, RegionSpace, WalkState); |
| 623 | if (ACPI_FAILURE (Status)) |
| 624 | { |
| 625 | return_ACPI_STATUS (Status); |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | AcpiExExitInterpreter (); |
| 630 | Status = AcpiEvInitializeRegion ( |
| 631 | AcpiNsGetAttachedObject (Node), FALSE); |
| 632 | AcpiExEnterInterpreter (); |
| 633 | |
| 634 | if (ACPI_FAILURE (Status)) |
| 635 | { |
| 636 | /* |
| 637 | * If AE_NOT_EXIST is returned, it is not fatal |
| 638 | * because many regions get created before a handler |
| 639 | * is installed for said region. |
| 640 | */ |
| 641 | if (AE_NOT_EXIST == Status) |
| 642 | { |
| 643 | Status = AE_OK; |
| 644 | } |
| 645 | } |
| 646 | break; |
| 647 | |
| 648 | case AML_NAME_OP: |
| 649 | |
| 650 | Status = AcpiDsCreateNode (WalkState, Node, Op); |
| 651 | break; |
| 652 | |
| 653 | case AML_METHOD_OP: |
| 654 | /* |
| 655 | * MethodOp PkgLength NameString MethodFlags TermList |
| 656 | * |
| 657 | * Note: We must create the method node/object pair as soon as we |
| 658 | * see the method declaration. This allows later pass1 parsing |
| 659 | * of invocations of the method (need to know the number of |
| 660 | * arguments.) |
| 661 | */ |
| 662 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 663 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n" , |
| 664 | WalkState, Op, Op->Named.Node)); |
| 665 | |
| 666 | if (!AcpiNsGetAttachedObject (Op->Named.Node)) |
| 667 | { |
| 668 | WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); |
| 669 | WalkState->NumOperands = 1; |
| 670 | |
| 671 | Status = AcpiDsCreateOperands ( |
| 672 | WalkState, Op->Common.Value.Arg); |
| 673 | if (ACPI_SUCCESS (Status)) |
| 674 | { |
| 675 | Status = AcpiExCreateMethod ( |
| 676 | Op->Named.Data, Op->Named.Length, WalkState); |
| 677 | } |
| 678 | |
| 679 | WalkState->Operands[0] = NULL; |
| 680 | WalkState->NumOperands = 0; |
| 681 | |
| 682 | if (ACPI_FAILURE (Status)) |
| 683 | { |
| 684 | return_ACPI_STATUS (Status); |
| 685 | } |
| 686 | } |
| 687 | break; |
| 688 | |
| 689 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
| 690 | |
| 691 | default: |
| 692 | |
| 693 | /* All NAMED_COMPLEX opcodes must be handled above */ |
| 694 | break; |
| 695 | } |
| 696 | break; |
| 697 | |
| 698 | case AML_CLASS_INTERNAL: |
| 699 | |
| 700 | /* case AML_INT_NAMEPATH_OP: */ |
| 701 | break; |
| 702 | |
| 703 | case AML_CLASS_METHOD_CALL: |
| 704 | |
| 705 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 706 | "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n" , |
| 707 | WalkState, Op, Node)); |
| 708 | |
| 709 | /* |
| 710 | * Lookup the method name and save the Node |
| 711 | */ |
| 712 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, |
| 713 | ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, |
| 714 | ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, |
| 715 | WalkState, &(NewNode)); |
| 716 | if (ACPI_SUCCESS (Status)) |
| 717 | { |
| 718 | /* |
| 719 | * Make sure that what we found is indeed a method |
| 720 | * We didn't search for a method on purpose, to see if the name |
| 721 | * would resolve |
| 722 | */ |
| 723 | if (NewNode->Type != ACPI_TYPE_METHOD) |
| 724 | { |
| 725 | Status = AE_AML_OPERAND_TYPE; |
| 726 | } |
| 727 | |
| 728 | /* We could put the returned object (Node) on the object stack for |
| 729 | * later, but for now, we will put it in the "op" object that the |
| 730 | * parser uses, so we can get it again at the end of this scope |
| 731 | */ |
| 732 | Op->Common.Node = NewNode; |
| 733 | } |
| 734 | else |
| 735 | { |
| 736 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); |
| 737 | } |
| 738 | break; |
| 739 | |
| 740 | |
| 741 | default: |
| 742 | |
| 743 | break; |
| 744 | } |
| 745 | |
| 746 | Cleanup: |
| 747 | |
| 748 | /* Remove the Node pushed at the very beginning */ |
| 749 | |
| 750 | WalkState->Operands[0] = NULL; |
| 751 | WalkState->NumOperands = 0; |
| 752 | return_ACPI_STATUS (Status); |
| 753 | } |
| 754 | |