1 /****************************************************************************** 2 * 3 * Module Name: dswload - Dispatcher namespace load callbacks 4 * $Revision: 1.120 $ 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __DSWLOAD_C__ 118 119 #include "acpi.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 #ifdef ACPI_ASL_COMPILER 128 #include "acdisasm.h" 129 #endif 130 131 #define _COMPONENT ACPI_DISPATCHER 132 ACPI_MODULE_NAME ("dswload") 133 134 135 /******************************************************************************* 136 * 137 * FUNCTION: AcpiDsInitCallbacks 138 * 139 * PARAMETERS: WalkState - Current state of the parse tree walk 140 * PassNumber - 1, 2, or 3 141 * 142 * RETURN: Status 143 * 144 * DESCRIPTION: Init walk state callbacks 145 * 146 ******************************************************************************/ 147 148 ACPI_STATUS 149 AcpiDsInitCallbacks ( 150 ACPI_WALK_STATE *WalkState, 151 UINT32 PassNumber) 152 { 153 154 switch (PassNumber) 155 { 156 case 1: 157 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | 158 ACPI_PARSE_DELETE_TREE; 159 WalkState->DescendingCallback = AcpiDsLoad1BeginOp; 160 WalkState->AscendingCallback = AcpiDsLoad1EndOp; 161 break; 162 163 case 2: 164 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | 165 ACPI_PARSE_DELETE_TREE; 166 WalkState->DescendingCallback = AcpiDsLoad2BeginOp; 167 WalkState->AscendingCallback = AcpiDsLoad2EndOp; 168 break; 169 170 case 3: 171 #ifndef ACPI_NO_METHOD_EXECUTION 172 WalkState->ParseFlags |= ACPI_PARSE_EXECUTE | 173 ACPI_PARSE_DELETE_TREE; 174 WalkState->DescendingCallback = AcpiDsExecBeginOp; 175 WalkState->AscendingCallback = AcpiDsExecEndOp; 176 #endif 177 break; 178 179 default: 180 return (AE_BAD_PARAMETER); 181 } 182 183 return (AE_OK); 184 } 185 186 187 /******************************************************************************* 188 * 189 * FUNCTION: AcpiDsLoad1BeginOp 190 * 191 * PARAMETERS: WalkState - Current state of the parse tree walk 192 * OutOp - Where to return op if a new one is created 193 * 194 * RETURN: Status 195 * 196 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 197 * 198 ******************************************************************************/ 199 200 ACPI_STATUS 201 AcpiDsLoad1BeginOp ( 202 ACPI_WALK_STATE *WalkState, 203 ACPI_PARSE_OBJECT **OutOp) 204 { 205 ACPI_PARSE_OBJECT *Op; 206 ACPI_NAMESPACE_NODE *Node; 207 ACPI_STATUS Status; 208 ACPI_OBJECT_TYPE ObjectType; 209 char *Path; 210 UINT32 Flags; 211 212 213 ACPI_FUNCTION_TRACE (DsLoad1BeginOp); 214 215 216 Op = WalkState->Op; 217 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 218 219 /* We are only interested in opcodes that have an associated name */ 220 221 if (Op) 222 { 223 if (!(WalkState->OpInfo->Flags & AML_NAMED)) 224 { 225 *OutOp = Op; 226 return_ACPI_STATUS (AE_OK); 227 } 228 229 /* Check if this object has already been installed in the namespace */ 230 231 if (Op->Common.Node) 232 { 233 *OutOp = Op; 234 return_ACPI_STATUS (AE_OK); 235 } 236 } 237 238 Path = AcpiPsGetNextNamestring (&WalkState->ParserState); 239 240 /* Map the raw opcode into an internal object type */ 241 242 ObjectType = WalkState->OpInfo->ObjectType; 243 244 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 245 "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType))); 246 247 switch (WalkState->Opcode) 248 { 249 case AML_SCOPE_OP: 250 251 /* 252 * The target name of the Scope() operator must exist at this point so 253 * that we can actually open the scope to enter new names underneath it. 254 * Allow search-to-root for single namesegs. 255 */ 256 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 257 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); 258 #ifdef ACPI_ASL_COMPILER 259 if (Status == AE_NOT_FOUND) 260 { 261 /* 262 * Table disassembly: 263 * Target of Scope() not found. Generate an External for it, and 264 * insert the name into the namespace. 265 */ 266 AcpiDmAddToExternalList (Path, ACPI_TYPE_DEVICE, 0); 267 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 268 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, 269 WalkState, &Node); 270 } 271 #endif 272 if (ACPI_FAILURE (Status)) 273 { 274 ACPI_ERROR_NAMESPACE (Path, Status); 275 return_ACPI_STATUS (Status); 276 } 277 278 /* 279 * Check to make sure that the target is 280 * one of the opcodes that actually opens a scope 281 */ 282 switch (Node->Type) 283 { 284 case ACPI_TYPE_ANY: 285 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 286 case ACPI_TYPE_DEVICE: 287 case ACPI_TYPE_POWER: 288 case ACPI_TYPE_PROCESSOR: 289 case ACPI_TYPE_THERMAL: 290 291 /* These are acceptable types */ 292 break; 293 294 case ACPI_TYPE_INTEGER: 295 case ACPI_TYPE_STRING: 296 case ACPI_TYPE_BUFFER: 297 298 /* 299 * These types we will allow, but we will change the type. This 300 * enables some existing code of the form: 301 * 302 * Name (DEB, 0) 303 * Scope (DEB) { ... } 304 * 305 * Note: silently change the type here. On the second pass, we will report 306 * a warning 307 */ 308 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 309 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", 310 Path, AcpiUtGetTypeName (Node->Type))); 311 312 Node->Type = ACPI_TYPE_ANY; 313 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 314 break; 315 316 default: 317 318 /* All other types are an error */ 319 320 ACPI_ERROR ((AE_INFO, 321 "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)", 322 AcpiUtGetTypeName (Node->Type), Path)); 323 324 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 325 } 326 break; 327 328 329 default: 330 /* 331 * For all other named opcodes, we will enter the name into 332 * the namespace. 333 * 334 * Setup the search flags. 335 * Since we are entering a name into the namespace, we do not want to 336 * enable the search-to-root upsearch. 337 * 338 * There are only two conditions where it is acceptable that the name 339 * already exists: 340 * 1) the Scope() operator can reopen a scoping object that was 341 * previously defined (Scope, Method, Device, etc.) 342 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer, 343 * BufferField, or Package), the name of the object is already 344 * in the namespace. 345 */ 346 if (WalkState->DeferredNode) 347 { 348 /* This name is already in the namespace, get the node */ 349 350 Node = WalkState->DeferredNode; 351 Status = AE_OK; 352 break; 353 } 354 355 /* 356 * If we are executing a method, do not create any namespace objects 357 * during the load phase, only during execution. 358 */ 359 if (WalkState->MethodNode) 360 { 361 Node = NULL; 362 Status = AE_OK; 363 break; 364 } 365 366 Flags = ACPI_NS_NO_UPSEARCH; 367 if ((WalkState->Opcode != AML_SCOPE_OP) && 368 (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP))) 369 { 370 Flags |= ACPI_NS_ERROR_IF_FOUND; 371 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", 372 AcpiUtGetTypeName (ObjectType))); 373 } 374 else 375 { 376 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 377 "[%s] Both Find or Create allowed\n", 378 AcpiUtGetTypeName (ObjectType))); 379 } 380 381 /* 382 * Enter the named type into the internal namespace. We enter the name 383 * as we go downward in the parse tree. Any necessary subobjects that 384 * involve arguments to the opcode must be created as we go back up the 385 * parse tree later. 386 */ 387 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 388 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); 389 if (ACPI_FAILURE (Status)) 390 { 391 if (Status == AE_ALREADY_EXISTS) 392 { 393 /* The name already exists in this scope */ 394 395 if (Node->Flags & ANOBJ_IS_EXTERNAL) 396 { 397 /* 398 * Allow one create on an object or segment that was 399 * previously declared External 400 */ 401 Node->Flags &= ~ANOBJ_IS_EXTERNAL; 402 Node->Type = (UINT8) ObjectType; 403 404 /* Just retyped a node, probably will need to open a scope */ 405 406 if (AcpiNsOpensScope (ObjectType)) 407 { 408 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 409 if (ACPI_FAILURE (Status)) 410 { 411 return_ACPI_STATUS (Status); 412 } 413 } 414 415 Status = AE_OK; 416 } 417 } 418 419 if (ACPI_FAILURE (Status)) 420 { 421 ACPI_ERROR_NAMESPACE (Path, Status); 422 return_ACPI_STATUS (Status); 423 } 424 } 425 break; 426 } 427 428 /* Common exit */ 429 430 if (!Op) 431 { 432 /* Create a new op */ 433 434 Op = AcpiPsAllocOp (WalkState->Opcode); 435 if (!Op) 436 { 437 return_ACPI_STATUS (AE_NO_MEMORY); 438 } 439 } 440 441 /* Initialize the op */ 442 443 #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) 444 Op->Named.Path = ACPI_CAST_PTR (UINT8, Path); 445 #endif 446 447 if (Node) 448 { 449 /* 450 * Put the Node in the "op" object that the parser uses, so we 451 * can get it again quickly when this scope is closed 452 */ 453 Op->Common.Node = Node; 454 Op->Named.Name = Node->Name.Integer; 455 } 456 457 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op); 458 *OutOp = Op; 459 return_ACPI_STATUS (Status); 460 } 461 462 463 /******************************************************************************* 464 * 465 * FUNCTION: AcpiDsLoad1EndOp 466 * 467 * PARAMETERS: WalkState - Current state of the parse tree walk 468 * 469 * RETURN: Status 470 * 471 * DESCRIPTION: Ascending callback used during the loading of the namespace, 472 * both control methods and everything else. 473 * 474 ******************************************************************************/ 475 476 ACPI_STATUS 477 AcpiDsLoad1EndOp ( 478 ACPI_WALK_STATE *WalkState) 479 { 480 ACPI_PARSE_OBJECT *Op; 481 ACPI_OBJECT_TYPE ObjectType; 482 ACPI_STATUS Status = AE_OK; 483 484 485 ACPI_FUNCTION_TRACE (DsLoad1EndOp); 486 487 488 Op = WalkState->Op; 489 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 490 491 /* We are only interested in opcodes that have an associated name */ 492 493 if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD))) 494 { 495 return_ACPI_STATUS (AE_OK); 496 } 497 498 /* Get the object type to determine if we should pop the scope */ 499 500 ObjectType = WalkState->OpInfo->ObjectType; 501 502 #ifndef ACPI_NO_METHOD_EXECUTION 503 if (WalkState->OpInfo->Flags & AML_FIELD) 504 { 505 /* 506 * If we are executing a method, do not create any namespace objects 507 * during the load phase, only during execution. 508 */ 509 if (!WalkState->MethodNode) 510 { 511 if (WalkState->Opcode == AML_FIELD_OP || 512 WalkState->Opcode == AML_BANK_FIELD_OP || 513 WalkState->Opcode == AML_INDEX_FIELD_OP) 514 { 515 Status = AcpiDsInitFieldObjects (Op, WalkState); 516 } 517 } 518 return_ACPI_STATUS (Status); 519 } 520 521 /* 522 * If we are executing a method, do not create any namespace objects 523 * during the load phase, only during execution. 524 */ 525 if (!WalkState->MethodNode) 526 { 527 if (Op->Common.AmlOpcode == AML_REGION_OP) 528 { 529 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 530 (ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer), 531 WalkState); 532 if (ACPI_FAILURE (Status)) 533 { 534 return_ACPI_STATUS (Status); 535 } 536 } 537 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP) 538 { 539 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 540 REGION_DATA_TABLE, WalkState); 541 if (ACPI_FAILURE (Status)) 542 { 543 return_ACPI_STATUS (Status); 544 } 545 } 546 } 547 #endif 548 549 if (Op->Common.AmlOpcode == AML_NAME_OP) 550 { 551 /* For Name opcode, get the object type from the argument */ 552 553 if (Op->Common.Value.Arg) 554 { 555 ObjectType = (AcpiPsGetOpcodeInfo ( 556 (Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType; 557 558 /* Set node type if we have a namespace node */ 559 560 if (Op->Common.Node) 561 { 562 Op->Common.Node->Type = (UINT8) ObjectType; 563 } 564 } 565 } 566 567 /* 568 * If we are executing a method, do not create any namespace objects 569 * during the load phase, only during execution. 570 */ 571 if (!WalkState->MethodNode) 572 { 573 if (Op->Common.AmlOpcode == AML_METHOD_OP) 574 { 575 /* 576 * MethodOp PkgLength NameString MethodFlags TermList 577 * 578 * Note: We must create the method node/object pair as soon as we 579 * see the method declaration. This allows later pass1 parsing 580 * of invocations of the method (need to know the number of 581 * arguments.) 582 */ 583 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 584 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 585 WalkState, Op, Op->Named.Node)); 586 587 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 588 { 589 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); 590 WalkState->NumOperands = 1; 591 592 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 593 if (ACPI_SUCCESS (Status)) 594 { 595 Status = AcpiExCreateMethod (Op->Named.Data, 596 Op->Named.Length, WalkState); 597 } 598 599 WalkState->Operands[0] = NULL; 600 WalkState->NumOperands = 0; 601 602 if (ACPI_FAILURE (Status)) 603 { 604 return_ACPI_STATUS (Status); 605 } 606 } 607 } 608 } 609 610 /* Pop the scope stack (only if loading a table) */ 611 612 if (!WalkState->MethodNode && 613 AcpiNsOpensScope (ObjectType)) 614 { 615 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", 616 AcpiUtGetTypeName (ObjectType), Op)); 617 618 Status = AcpiDsScopeStackPop (WalkState); 619 } 620 621 return_ACPI_STATUS (Status); 622 } 623 624 625 /******************************************************************************* 626 * 627 * FUNCTION: AcpiDsLoad2BeginOp 628 * 629 * PARAMETERS: WalkState - Current state of the parse tree walk 630 * OutOp - Wher to return op if a new one is created 631 * 632 * RETURN: Status 633 * 634 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 635 * 636 ******************************************************************************/ 637 638 ACPI_STATUS 639 AcpiDsLoad2BeginOp ( 640 ACPI_WALK_STATE *WalkState, 641 ACPI_PARSE_OBJECT **OutOp) 642 { 643 ACPI_PARSE_OBJECT *Op; 644 ACPI_NAMESPACE_NODE *Node; 645 ACPI_STATUS Status; 646 ACPI_OBJECT_TYPE ObjectType; 647 char *BufferPtr; 648 UINT32 Flags; 649 650 651 ACPI_FUNCTION_TRACE (DsLoad2BeginOp); 652 653 654 Op = WalkState->Op; 655 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 656 657 if (Op) 658 { 659 if ((WalkState->ControlState) && 660 (WalkState->ControlState->Common.State == 661 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 662 { 663 /* We are executing a while loop outside of a method */ 664 665 Status = AcpiDsExecBeginOp (WalkState, OutOp); 666 return_ACPI_STATUS (Status); 667 } 668 669 /* We only care about Namespace opcodes here */ 670 671 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && 672 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 673 (!(WalkState->OpInfo->Flags & AML_NAMED))) 674 { 675 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE 676 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) || 677 (WalkState->OpInfo->Class == AML_CLASS_CONTROL)) 678 { 679 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 680 "Begin/EXEC: %s (fl %8.8X)\n", WalkState->OpInfo->Name, 681 WalkState->OpInfo->Flags)); 682 683 /* Executing a type1 or type2 opcode outside of a method */ 684 685 Status = AcpiDsExecBeginOp (WalkState, OutOp); 686 return_ACPI_STATUS (Status); 687 } 688 #endif 689 return_ACPI_STATUS (AE_OK); 690 } 691 692 /* Get the name we are going to enter or lookup in the namespace */ 693 694 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 695 { 696 /* For Namepath op, get the path string */ 697 698 BufferPtr = Op->Common.Value.String; 699 if (!BufferPtr) 700 { 701 /* No name, just exit */ 702 703 return_ACPI_STATUS (AE_OK); 704 } 705 } 706 else 707 { 708 /* Get name from the op */ 709 710 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name); 711 } 712 } 713 else 714 { 715 /* Get the namestring from the raw AML */ 716 717 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 718 } 719 720 /* Map the opcode into an internal object type */ 721 722 ObjectType = WalkState->OpInfo->ObjectType; 723 724 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 725 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 726 727 switch (WalkState->Opcode) 728 { 729 case AML_FIELD_OP: 730 case AML_BANK_FIELD_OP: 731 case AML_INDEX_FIELD_OP: 732 733 Node = NULL; 734 Status = AE_OK; 735 break; 736 737 case AML_INT_NAMEPATH_OP: 738 /* 739 * The NamePath is an object reference to an existing object. 740 * Don't enter the name into the namespace, but look it up 741 * for use later. 742 */ 743 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 744 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 745 WalkState, &(Node)); 746 break; 747 748 case AML_SCOPE_OP: 749 /* 750 * The Path is an object reference to an existing object. 751 * Don't enter the name into the namespace, but look it up 752 * for use later. 753 */ 754 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 755 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 756 WalkState, &(Node)); 757 if (ACPI_FAILURE (Status)) 758 { 759 #ifdef ACPI_ASL_COMPILER 760 if (Status == AE_NOT_FOUND) 761 { 762 Status = AE_OK; 763 } 764 else 765 { 766 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 767 } 768 #else 769 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 770 #endif 771 return_ACPI_STATUS (Status); 772 } 773 774 /* 775 * We must check to make sure that the target is 776 * one of the opcodes that actually opens a scope 777 */ 778 switch (Node->Type) 779 { 780 case ACPI_TYPE_ANY: 781 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 782 case ACPI_TYPE_DEVICE: 783 case ACPI_TYPE_POWER: 784 case ACPI_TYPE_PROCESSOR: 785 case ACPI_TYPE_THERMAL: 786 787 /* These are acceptable types */ 788 break; 789 790 case ACPI_TYPE_INTEGER: 791 case ACPI_TYPE_STRING: 792 case ACPI_TYPE_BUFFER: 793 794 /* 795 * These types we will allow, but we will change the type. This 796 * enables some existing code of the form: 797 * 798 * Name (DEB, 0) 799 * Scope (DEB) { ... } 800 */ 801 ACPI_WARNING ((AE_INFO, 802 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", 803 BufferPtr, AcpiUtGetTypeName (Node->Type))); 804 805 Node->Type = ACPI_TYPE_ANY; 806 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 807 break; 808 809 default: 810 811 /* All other types are an error */ 812 813 ACPI_ERROR ((AE_INFO, 814 "Invalid type (%s) for target of Scope operator [%4.4s]", 815 AcpiUtGetTypeName (Node->Type), BufferPtr)); 816 817 return (AE_AML_OPERAND_TYPE); 818 } 819 break; 820 821 default: 822 823 /* All other opcodes */ 824 825 if (Op && Op->Common.Node) 826 { 827 /* This op/node was previously entered into the namespace */ 828 829 Node = Op->Common.Node; 830 831 if (AcpiNsOpensScope (ObjectType)) 832 { 833 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 834 if (ACPI_FAILURE (Status)) 835 { 836 return_ACPI_STATUS (Status); 837 } 838 } 839 840 return_ACPI_STATUS (AE_OK); 841 } 842 843 /* 844 * Enter the named type into the internal namespace. We enter the name 845 * as we go downward in the parse tree. Any necessary subobjects that 846 * involve arguments to the opcode must be created as we go back up the 847 * parse tree later. 848 * 849 * Note: Name may already exist if we are executing a deferred opcode. 850 */ 851 if (WalkState->DeferredNode) 852 { 853 /* This name is already in the namespace, get the node */ 854 855 Node = WalkState->DeferredNode; 856 Status = AE_OK; 857 break; 858 } 859 860 Flags = ACPI_NS_NO_UPSEARCH; 861 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE) 862 { 863 /* Execution mode, node cannot already exist, node is temporary */ 864 865 Flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY); 866 } 867 868 /* Add new entry or lookup existing entry */ 869 870 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 871 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node); 872 873 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY)) 874 { 875 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 876 "***New Node [%4.4s] %p is temporary\n", 877 AcpiUtGetNodeName (Node), Node)); 878 } 879 break; 880 } 881 882 if (ACPI_FAILURE (Status)) 883 { 884 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 885 return_ACPI_STATUS (Status); 886 } 887 888 if (!Op) 889 { 890 /* Create a new op */ 891 892 Op = AcpiPsAllocOp (WalkState->Opcode); 893 if (!Op) 894 { 895 return_ACPI_STATUS (AE_NO_MEMORY); 896 } 897 898 /* Initialize the new op */ 899 900 if (Node) 901 { 902 Op->Named.Name = Node->Name.Integer; 903 } 904 *OutOp = Op; 905 } 906 907 /* 908 * Put the Node in the "op" object that the parser uses, so we 909 * can get it again quickly when this scope is closed 910 */ 911 Op->Common.Node = Node; 912 return_ACPI_STATUS (Status); 913 } 914 915 916 /******************************************************************************* 917 * 918 * FUNCTION: AcpiDsLoad2EndOp 919 * 920 * PARAMETERS: WalkState - Current state of the parse tree walk 921 * 922 * RETURN: Status 923 * 924 * DESCRIPTION: Ascending callback used during the loading of the namespace, 925 * both control methods and everything else. 926 * 927 ******************************************************************************/ 928 929 ACPI_STATUS 930 AcpiDsLoad2EndOp ( 931 ACPI_WALK_STATE *WalkState) 932 { 933 ACPI_PARSE_OBJECT *Op; 934 ACPI_STATUS Status = AE_OK; 935 ACPI_OBJECT_TYPE ObjectType; 936 ACPI_NAMESPACE_NODE *Node; 937 ACPI_PARSE_OBJECT *Arg; 938 ACPI_NAMESPACE_NODE *NewNode; 939 #ifndef ACPI_NO_METHOD_EXECUTION 940 UINT32 i; 941 UINT8 RegionSpace; 942 #endif 943 944 945 ACPI_FUNCTION_TRACE (DsLoad2EndOp); 946 947 Op = WalkState->Op; 948 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 949 WalkState->OpInfo->Name, Op, WalkState)); 950 951 /* Check if opcode had an associated namespace object */ 952 953 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 954 { 955 #ifndef ACPI_NO_METHOD_EXECUTION 956 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE 957 /* No namespace object. Executable opcode? */ 958 959 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) || 960 (WalkState->OpInfo->Class == AML_CLASS_CONTROL)) 961 { 962 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 963 "End/EXEC: %s (fl %8.8X)\n", WalkState->OpInfo->Name, 964 WalkState->OpInfo->Flags)); 965 966 /* Executing a type1 or type2 opcode outside of a method */ 967 968 Status = AcpiDsExecEndOp (WalkState); 969 return_ACPI_STATUS (Status); 970 } 971 #endif 972 #endif 973 return_ACPI_STATUS (AE_OK); 974 } 975 976 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 977 { 978 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 979 "Ending scope Op=%p State=%p\n", Op, WalkState)); 980 } 981 982 ObjectType = WalkState->OpInfo->ObjectType; 983 984 /* 985 * Get the Node/name from the earlier lookup 986 * (It was saved in the *op structure) 987 */ 988 Node = Op->Common.Node; 989 990 /* 991 * Put the Node on the object stack (Contains the ACPI Name of 992 * this object) 993 */ 994 WalkState->Operands[0] = (void *) Node; 995 WalkState->NumOperands = 1; 996 997 /* Pop the scope stack */ 998 999 if (AcpiNsOpensScope (ObjectType) && 1000 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 1001 { 1002 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 1003 AcpiUtGetTypeName (ObjectType), Op)); 1004 1005 Status = AcpiDsScopeStackPop (WalkState); 1006 if (ACPI_FAILURE (Status)) 1007 { 1008 goto Cleanup; 1009 } 1010 } 1011 1012 /* 1013 * Named operations are as follows: 1014 * 1015 * AML_ALIAS 1016 * AML_BANKFIELD 1017 * AML_CREATEBITFIELD 1018 * AML_CREATEBYTEFIELD 1019 * AML_CREATEDWORDFIELD 1020 * AML_CREATEFIELD 1021 * AML_CREATEQWORDFIELD 1022 * AML_CREATEWORDFIELD 1023 * AML_DATA_REGION 1024 * AML_DEVICE 1025 * AML_EVENT 1026 * AML_FIELD 1027 * AML_INDEXFIELD 1028 * AML_METHOD 1029 * AML_METHODCALL 1030 * AML_MUTEX 1031 * AML_NAME 1032 * AML_NAMEDFIELD 1033 * AML_OPREGION 1034 * AML_POWERRES 1035 * AML_PROCESSOR 1036 * AML_SCOPE 1037 * AML_THERMALZONE 1038 */ 1039 1040 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1041 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 1042 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 1043 1044 /* Decode the opcode */ 1045 1046 Arg = Op->Common.Value.Arg; 1047 1048 switch (WalkState->OpInfo->Type) 1049 { 1050 #ifndef ACPI_NO_METHOD_EXECUTION 1051 1052 case AML_TYPE_CREATE_FIELD: 1053 /* 1054 * Create the field object, but the field buffer and index must 1055 * be evaluated later during the execution phase 1056 */ 1057 Status = AcpiDsCreateBufferField (Op, WalkState); 1058 break; 1059 1060 1061 case AML_TYPE_NAMED_FIELD: 1062 /* 1063 * If we are executing a method, initialize the field 1064 */ 1065 if (WalkState->MethodNode) 1066 { 1067 Status = AcpiDsInitFieldObjects (Op, WalkState); 1068 } 1069 1070 switch (Op->Common.AmlOpcode) 1071 { 1072 case AML_INDEX_FIELD_OP: 1073 1074 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 1075 WalkState); 1076 break; 1077 1078 case AML_BANK_FIELD_OP: 1079 1080 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 1081 break; 1082 1083 case AML_FIELD_OP: 1084 1085 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 1086 break; 1087 1088 default: 1089 /* All NAMED_FIELD opcodes must be handled above */ 1090 break; 1091 } 1092 break; 1093 1094 1095 case AML_TYPE_NAMED_SIMPLE: 1096 1097 Status = AcpiDsCreateOperands (WalkState, Arg); 1098 if (ACPI_FAILURE (Status)) 1099 { 1100 goto Cleanup; 1101 } 1102 1103 switch (Op->Common.AmlOpcode) 1104 { 1105 case AML_PROCESSOR_OP: 1106 1107 Status = AcpiExCreateProcessor (WalkState); 1108 break; 1109 1110 case AML_POWER_RES_OP: 1111 1112 Status = AcpiExCreatePowerResource (WalkState); 1113 break; 1114 1115 case AML_MUTEX_OP: 1116 1117 Status = AcpiExCreateMutex (WalkState); 1118 break; 1119 1120 case AML_EVENT_OP: 1121 1122 Status = AcpiExCreateEvent (WalkState); 1123 break; 1124 1125 1126 case AML_ALIAS_OP: 1127 1128 Status = AcpiExCreateAlias (WalkState); 1129 break; 1130 1131 default: 1132 /* Unknown opcode */ 1133 1134 Status = AE_OK; 1135 goto Cleanup; 1136 } 1137 1138 /* Delete operands */ 1139 1140 for (i = 1; i < WalkState->NumOperands; i++) 1141 { 1142 AcpiUtRemoveReference (WalkState->Operands[i]); 1143 WalkState->Operands[i] = NULL; 1144 } 1145 1146 break; 1147 #endif /* ACPI_NO_METHOD_EXECUTION */ 1148 1149 case AML_TYPE_NAMED_COMPLEX: 1150 1151 switch (Op->Common.AmlOpcode) 1152 { 1153 #ifndef ACPI_NO_METHOD_EXECUTION 1154 case AML_REGION_OP: 1155 case AML_DATA_REGION_OP: 1156 1157 if (Op->Common.AmlOpcode == AML_REGION_OP) 1158 { 1159 RegionSpace = (ACPI_ADR_SPACE_TYPE) 1160 ((Op->Common.Value.Arg)->Common.Value.Integer); 1161 } 1162 else 1163 { 1164 RegionSpace = REGION_DATA_TABLE; 1165 } 1166 1167 /* 1168 * If we are executing a method, initialize the region 1169 */ 1170 if (WalkState->MethodNode) 1171 { 1172 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 1173 RegionSpace, WalkState); 1174 if (ACPI_FAILURE (Status)) 1175 { 1176 return (Status); 1177 } 1178 } 1179 1180 /* 1181 * The OpRegion is not fully parsed at this time. Only valid 1182 * argument is the SpaceId. (We must save the address of the 1183 * AML of the address and length operands) 1184 */ 1185 1186 /* 1187 * If we have a valid region, initialize it 1188 * Namespace is NOT locked at this point. 1189 * 1190 * TBD: need to unlock interpreter if it is locked, in order 1191 * to allow _REG methods to be run. 1192 */ 1193 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), 1194 FALSE); 1195 if (ACPI_FAILURE (Status)) 1196 { 1197 /* 1198 * If AE_NOT_EXIST is returned, it is not fatal 1199 * because many regions get created before a handler 1200 * is installed for said region. 1201 */ 1202 if (AE_NOT_EXIST == Status) 1203 { 1204 Status = AE_OK; 1205 } 1206 } 1207 break; 1208 1209 1210 case AML_NAME_OP: 1211 1212 Status = AcpiDsCreateNode (WalkState, Node, Op); 1213 break; 1214 1215 1216 case AML_METHOD_OP: 1217 /* 1218 * MethodOp PkgLength NameString MethodFlags TermList 1219 * 1220 * Note: We must create the method node/object pair as soon as we 1221 * see the method declaration. This allows later pass1 parsing 1222 * of invocations of the method (need to know the number of 1223 * arguments.) 1224 */ 1225 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1226 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 1227 WalkState, Op, Op->Named.Node)); 1228 1229 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 1230 { 1231 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); 1232 WalkState->NumOperands = 1; 1233 1234 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 1235 if (ACPI_SUCCESS (Status)) 1236 { 1237 Status = AcpiExCreateMethod (Op->Named.Data, 1238 Op->Named.Length, WalkState); 1239 } 1240 WalkState->Operands[0] = NULL; 1241 WalkState->NumOperands = 0; 1242 1243 if (ACPI_FAILURE (Status)) 1244 { 1245 return_ACPI_STATUS (Status); 1246 } 1247 } 1248 break; 1249 1250 #endif /* ACPI_NO_METHOD_EXECUTION */ 1251 1252 default: 1253 /* All NAMED_COMPLEX opcodes must be handled above */ 1254 break; 1255 } 1256 break; 1257 1258 1259 case AML_CLASS_INTERNAL: 1260 1261 /* case AML_INT_NAMEPATH_OP: */ 1262 break; 1263 1264 1265 case AML_CLASS_METHOD_CALL: 1266 1267 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1268 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", 1269 WalkState, Op, Node)); 1270 1271 /* 1272 * Lookup the method name and save the Node 1273 */ 1274 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 1275 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, 1276 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 1277 WalkState, &(NewNode)); 1278 if (ACPI_SUCCESS (Status)) 1279 { 1280 /* 1281 * Make sure that what we found is indeed a method 1282 * We didn't search for a method on purpose, to see if the name 1283 * would resolve 1284 */ 1285 if (NewNode->Type != ACPI_TYPE_METHOD) 1286 { 1287 Status = AE_AML_OPERAND_TYPE; 1288 } 1289 1290 /* We could put the returned object (Node) on the object stack for 1291 * later, but for now, we will put it in the "op" object that the 1292 * parser uses, so we can get it again at the end of this scope 1293 */ 1294 Op->Common.Node = NewNode; 1295 } 1296 else 1297 { 1298 ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); 1299 } 1300 break; 1301 1302 1303 default: 1304 break; 1305 } 1306 1307 Cleanup: 1308 1309 /* Remove the Node pushed at the very beginning */ 1310 1311 WalkState->Operands[0] = NULL; 1312 WalkState->NumOperands = 0; 1313 return_ACPI_STATUS (Status); 1314 } 1315 1316 1317