1 /****************************************************************************** 2 * 3 * Module Name: dswload - Dispatcher namespace load callbacks 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #define __DSWLOAD_C__ 117 118 #include "acpi.h" 119 #include "accommon.h" 120 #include "acparser.h" 121 #include "amlcode.h" 122 #include "acdispat.h" 123 #include "acinterp.h" 124 #include "acnamesp.h" 125 #include "acevents.h" 126 127 #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 (Op, 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 return_ACPI_STATUS (AE_OK); 676 } 677 678 /* Get the name we are going to enter or lookup in the namespace */ 679 680 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 681 { 682 /* For Namepath op, get the path string */ 683 684 BufferPtr = Op->Common.Value.String; 685 if (!BufferPtr) 686 { 687 /* No name, just exit */ 688 689 return_ACPI_STATUS (AE_OK); 690 } 691 } 692 else 693 { 694 /* Get name from the op */ 695 696 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name); 697 } 698 } 699 else 700 { 701 /* Get the namestring from the raw AML */ 702 703 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 704 } 705 706 /* Map the opcode into an internal object type */ 707 708 ObjectType = WalkState->OpInfo->ObjectType; 709 710 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 711 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 712 713 switch (WalkState->Opcode) 714 { 715 case AML_FIELD_OP: 716 case AML_BANK_FIELD_OP: 717 case AML_INDEX_FIELD_OP: 718 719 Node = NULL; 720 Status = AE_OK; 721 break; 722 723 case AML_INT_NAMEPATH_OP: 724 /* 725 * The NamePath is an object reference to an existing object. 726 * Don't enter the name into the namespace, but look it up 727 * for use later. 728 */ 729 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 730 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 731 WalkState, &(Node)); 732 break; 733 734 case AML_SCOPE_OP: 735 736 /* Special case for Scope(\) -> refers to the Root node */ 737 738 if (Op && (Op->Named.Node == AcpiGbl_RootNode)) 739 { 740 Node = Op->Named.Node; 741 742 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 743 if (ACPI_FAILURE (Status)) 744 { 745 return_ACPI_STATUS (Status); 746 } 747 } 748 else 749 { 750 /* 751 * The Path is an object reference to an existing object. 752 * Don't enter the name into the namespace, but look it up 753 * for use later. 754 */ 755 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 756 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 757 WalkState, &(Node)); 758 if (ACPI_FAILURE (Status)) 759 { 760 #ifdef ACPI_ASL_COMPILER 761 if (Status == AE_NOT_FOUND) 762 { 763 Status = AE_OK; 764 } 765 else 766 { 767 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 768 } 769 #else 770 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 771 #endif 772 return_ACPI_STATUS (Status); 773 } 774 } 775 776 /* 777 * We must check to make sure that the target is 778 * one of the opcodes that actually opens a scope 779 */ 780 switch (Node->Type) 781 { 782 case ACPI_TYPE_ANY: 783 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 784 case ACPI_TYPE_DEVICE: 785 case ACPI_TYPE_POWER: 786 case ACPI_TYPE_PROCESSOR: 787 case ACPI_TYPE_THERMAL: 788 789 /* These are acceptable types */ 790 break; 791 792 case ACPI_TYPE_INTEGER: 793 case ACPI_TYPE_STRING: 794 case ACPI_TYPE_BUFFER: 795 796 /* 797 * These types we will allow, but we will change the type. This 798 * enables some existing code of the form: 799 * 800 * Name (DEB, 0) 801 * Scope (DEB) { ... } 802 */ 803 ACPI_WARNING ((AE_INFO, 804 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", 805 BufferPtr, AcpiUtGetTypeName (Node->Type))); 806 807 Node->Type = ACPI_TYPE_ANY; 808 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 809 break; 810 811 default: 812 813 /* All other types are an error */ 814 815 ACPI_ERROR ((AE_INFO, 816 "Invalid type (%s) for target of Scope operator [%4.4s]", 817 AcpiUtGetTypeName (Node->Type), BufferPtr)); 818 819 return (AE_AML_OPERAND_TYPE); 820 } 821 break; 822 823 default: 824 825 /* All other opcodes */ 826 827 if (Op && Op->Common.Node) 828 { 829 /* This op/node was previously entered into the namespace */ 830 831 Node = Op->Common.Node; 832 833 if (AcpiNsOpensScope (ObjectType)) 834 { 835 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 836 if (ACPI_FAILURE (Status)) 837 { 838 return_ACPI_STATUS (Status); 839 } 840 } 841 842 return_ACPI_STATUS (AE_OK); 843 } 844 845 /* 846 * Enter the named type into the internal namespace. We enter the name 847 * as we go downward in the parse tree. Any necessary subobjects that 848 * involve arguments to the opcode must be created as we go back up the 849 * parse tree later. 850 * 851 * Note: Name may already exist if we are executing a deferred opcode. 852 */ 853 if (WalkState->DeferredNode) 854 { 855 /* This name is already in the namespace, get the node */ 856 857 Node = WalkState->DeferredNode; 858 Status = AE_OK; 859 break; 860 } 861 862 Flags = ACPI_NS_NO_UPSEARCH; 863 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE) 864 { 865 /* Execution mode, node cannot already exist, node is temporary */ 866 867 Flags |= ACPI_NS_ERROR_IF_FOUND; 868 869 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 870 { 871 Flags |= ACPI_NS_TEMPORARY; 872 } 873 } 874 875 /* Add new entry or lookup existing entry */ 876 877 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 878 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node); 879 880 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY)) 881 { 882 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 883 "***New Node [%4.4s] %p is temporary\n", 884 AcpiUtGetNodeName (Node), Node)); 885 } 886 break; 887 } 888 889 if (ACPI_FAILURE (Status)) 890 { 891 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 892 return_ACPI_STATUS (Status); 893 } 894 895 if (!Op) 896 { 897 /* Create a new op */ 898 899 Op = AcpiPsAllocOp (WalkState->Opcode); 900 if (!Op) 901 { 902 return_ACPI_STATUS (AE_NO_MEMORY); 903 } 904 905 /* Initialize the new op */ 906 907 if (Node) 908 { 909 Op->Named.Name = Node->Name.Integer; 910 } 911 *OutOp = Op; 912 } 913 914 /* 915 * Put the Node in the "op" object that the parser uses, so we 916 * can get it again quickly when this scope is closed 917 */ 918 Op->Common.Node = Node; 919 return_ACPI_STATUS (Status); 920 } 921 922 923 /******************************************************************************* 924 * 925 * FUNCTION: AcpiDsLoad2EndOp 926 * 927 * PARAMETERS: WalkState - Current state of the parse tree walk 928 * 929 * RETURN: Status 930 * 931 * DESCRIPTION: Ascending callback used during the loading of the namespace, 932 * both control methods and everything else. 933 * 934 ******************************************************************************/ 935 936 ACPI_STATUS 937 AcpiDsLoad2EndOp ( 938 ACPI_WALK_STATE *WalkState) 939 { 940 ACPI_PARSE_OBJECT *Op; 941 ACPI_STATUS Status = AE_OK; 942 ACPI_OBJECT_TYPE ObjectType; 943 ACPI_NAMESPACE_NODE *Node; 944 ACPI_PARSE_OBJECT *Arg; 945 ACPI_NAMESPACE_NODE *NewNode; 946 #ifndef ACPI_NO_METHOD_EXECUTION 947 UINT32 i; 948 UINT8 RegionSpace; 949 #endif 950 951 952 ACPI_FUNCTION_TRACE (DsLoad2EndOp); 953 954 Op = WalkState->Op; 955 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 956 WalkState->OpInfo->Name, Op, WalkState)); 957 958 /* Check if opcode had an associated namespace object */ 959 960 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 961 { 962 return_ACPI_STATUS (AE_OK); 963 } 964 965 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 966 { 967 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 968 "Ending scope Op=%p State=%p\n", Op, WalkState)); 969 } 970 971 ObjectType = WalkState->OpInfo->ObjectType; 972 973 /* 974 * Get the Node/name from the earlier lookup 975 * (It was saved in the *op structure) 976 */ 977 Node = Op->Common.Node; 978 979 /* 980 * Put the Node on the object stack (Contains the ACPI Name of 981 * this object) 982 */ 983 WalkState->Operands[0] = (void *) Node; 984 WalkState->NumOperands = 1; 985 986 /* Pop the scope stack */ 987 988 if (AcpiNsOpensScope (ObjectType) && 989 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 990 { 991 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 992 AcpiUtGetTypeName (ObjectType), Op)); 993 994 Status = AcpiDsScopeStackPop (WalkState); 995 if (ACPI_FAILURE (Status)) 996 { 997 goto Cleanup; 998 } 999 } 1000 1001 /* 1002 * Named operations are as follows: 1003 * 1004 * AML_ALIAS 1005 * AML_BANKFIELD 1006 * AML_CREATEBITFIELD 1007 * AML_CREATEBYTEFIELD 1008 * AML_CREATEDWORDFIELD 1009 * AML_CREATEFIELD 1010 * AML_CREATEQWORDFIELD 1011 * AML_CREATEWORDFIELD 1012 * AML_DATA_REGION 1013 * AML_DEVICE 1014 * AML_EVENT 1015 * AML_FIELD 1016 * AML_INDEXFIELD 1017 * AML_METHOD 1018 * AML_METHODCALL 1019 * AML_MUTEX 1020 * AML_NAME 1021 * AML_NAMEDFIELD 1022 * AML_OPREGION 1023 * AML_POWERRES 1024 * AML_PROCESSOR 1025 * AML_SCOPE 1026 * AML_THERMALZONE 1027 */ 1028 1029 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1030 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 1031 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 1032 1033 /* Decode the opcode */ 1034 1035 Arg = Op->Common.Value.Arg; 1036 1037 switch (WalkState->OpInfo->Type) 1038 { 1039 #ifndef ACPI_NO_METHOD_EXECUTION 1040 1041 case AML_TYPE_CREATE_FIELD: 1042 /* 1043 * Create the field object, but the field buffer and index must 1044 * be evaluated later during the execution phase 1045 */ 1046 Status = AcpiDsCreateBufferField (Op, WalkState); 1047 break; 1048 1049 1050 case AML_TYPE_NAMED_FIELD: 1051 /* 1052 * If we are executing a method, initialize the field 1053 */ 1054 if (WalkState->MethodNode) 1055 { 1056 Status = AcpiDsInitFieldObjects (Op, WalkState); 1057 } 1058 1059 switch (Op->Common.AmlOpcode) 1060 { 1061 case AML_INDEX_FIELD_OP: 1062 1063 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 1064 WalkState); 1065 break; 1066 1067 case AML_BANK_FIELD_OP: 1068 1069 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 1070 break; 1071 1072 case AML_FIELD_OP: 1073 1074 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 1075 break; 1076 1077 default: 1078 /* All NAMED_FIELD opcodes must be handled above */ 1079 break; 1080 } 1081 break; 1082 1083 1084 case AML_TYPE_NAMED_SIMPLE: 1085 1086 Status = AcpiDsCreateOperands (WalkState, Arg); 1087 if (ACPI_FAILURE (Status)) 1088 { 1089 goto Cleanup; 1090 } 1091 1092 switch (Op->Common.AmlOpcode) 1093 { 1094 case AML_PROCESSOR_OP: 1095 1096 Status = AcpiExCreateProcessor (WalkState); 1097 break; 1098 1099 case AML_POWER_RES_OP: 1100 1101 Status = AcpiExCreatePowerResource (WalkState); 1102 break; 1103 1104 case AML_MUTEX_OP: 1105 1106 Status = AcpiExCreateMutex (WalkState); 1107 break; 1108 1109 case AML_EVENT_OP: 1110 1111 Status = AcpiExCreateEvent (WalkState); 1112 break; 1113 1114 1115 case AML_ALIAS_OP: 1116 1117 Status = AcpiExCreateAlias (WalkState); 1118 break; 1119 1120 default: 1121 /* Unknown opcode */ 1122 1123 Status = AE_OK; 1124 goto Cleanup; 1125 } 1126 1127 /* Delete operands */ 1128 1129 for (i = 1; i < WalkState->NumOperands; i++) 1130 { 1131 AcpiUtRemoveReference (WalkState->Operands[i]); 1132 WalkState->Operands[i] = NULL; 1133 } 1134 1135 break; 1136 #endif /* ACPI_NO_METHOD_EXECUTION */ 1137 1138 case AML_TYPE_NAMED_COMPLEX: 1139 1140 switch (Op->Common.AmlOpcode) 1141 { 1142 #ifndef ACPI_NO_METHOD_EXECUTION 1143 case AML_REGION_OP: 1144 case AML_DATA_REGION_OP: 1145 1146 if (Op->Common.AmlOpcode == AML_REGION_OP) 1147 { 1148 RegionSpace = (ACPI_ADR_SPACE_TYPE) 1149 ((Op->Common.Value.Arg)->Common.Value.Integer); 1150 } 1151 else 1152 { 1153 RegionSpace = REGION_DATA_TABLE; 1154 } 1155 1156 /* 1157 * The OpRegion is not fully parsed at this time. The only valid 1158 * argument is the SpaceId. (We must save the address of the 1159 * AML of the address and length operands) 1160 * 1161 * If we have a valid region, initialize it. The Namespace is NOT 1162 * locked at this point. 1163 * 1164 * Need to unlock interpreter if it is locked (if we are running 1165 * a control method), in order to allow _REG methods to be run 1166 * during AcpiEvInitializeRegion. 1167 */ 1168 if (WalkState->MethodNode) 1169 { 1170 /* 1171 * Executing a method: initialize the region and unlock 1172 * the interpreter 1173 */ 1174 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 1175 RegionSpace, WalkState); 1176 if (ACPI_FAILURE (Status)) 1177 { 1178 return (Status); 1179 } 1180 1181 AcpiExExitInterpreter (); 1182 } 1183 1184 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), 1185 FALSE); 1186 if (WalkState->MethodNode) 1187 { 1188 AcpiExEnterInterpreter (); 1189 } 1190 1191 if (ACPI_FAILURE (Status)) 1192 { 1193 /* 1194 * If AE_NOT_EXIST is returned, it is not fatal 1195 * because many regions get created before a handler 1196 * is installed for said region. 1197 */ 1198 if (AE_NOT_EXIST == Status) 1199 { 1200 Status = AE_OK; 1201 } 1202 } 1203 break; 1204 1205 1206 case AML_NAME_OP: 1207 1208 Status = AcpiDsCreateNode (WalkState, Node, Op); 1209 break; 1210 1211 1212 case AML_METHOD_OP: 1213 /* 1214 * MethodOp PkgLength NameString MethodFlags TermList 1215 * 1216 * Note: We must create the method node/object pair as soon as we 1217 * see the method declaration. This allows later pass1 parsing 1218 * of invocations of the method (need to know the number of 1219 * arguments.) 1220 */ 1221 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1222 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 1223 WalkState, Op, Op->Named.Node)); 1224 1225 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 1226 { 1227 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); 1228 WalkState->NumOperands = 1; 1229 1230 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 1231 if (ACPI_SUCCESS (Status)) 1232 { 1233 Status = AcpiExCreateMethod (Op->Named.Data, 1234 Op->Named.Length, WalkState); 1235 } 1236 WalkState->Operands[0] = NULL; 1237 WalkState->NumOperands = 0; 1238 1239 if (ACPI_FAILURE (Status)) 1240 { 1241 return_ACPI_STATUS (Status); 1242 } 1243 } 1244 break; 1245 1246 #endif /* ACPI_NO_METHOD_EXECUTION */ 1247 1248 default: 1249 /* All NAMED_COMPLEX opcodes must be handled above */ 1250 break; 1251 } 1252 break; 1253 1254 1255 case AML_CLASS_INTERNAL: 1256 1257 /* case AML_INT_NAMEPATH_OP: */ 1258 break; 1259 1260 1261 case AML_CLASS_METHOD_CALL: 1262 1263 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1264 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", 1265 WalkState, Op, Node)); 1266 1267 /* 1268 * Lookup the method name and save the Node 1269 */ 1270 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 1271 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, 1272 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 1273 WalkState, &(NewNode)); 1274 if (ACPI_SUCCESS (Status)) 1275 { 1276 /* 1277 * Make sure that what we found is indeed a method 1278 * We didn't search for a method on purpose, to see if the name 1279 * would resolve 1280 */ 1281 if (NewNode->Type != ACPI_TYPE_METHOD) 1282 { 1283 Status = AE_AML_OPERAND_TYPE; 1284 } 1285 1286 /* We could put the returned object (Node) on the object stack for 1287 * later, but for now, we will put it in the "op" object that the 1288 * parser uses, so we can get it again at the end of this scope 1289 */ 1290 Op->Common.Node = NewNode; 1291 } 1292 else 1293 { 1294 ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); 1295 } 1296 break; 1297 1298 1299 default: 1300 break; 1301 } 1302 1303 Cleanup: 1304 1305 /* Remove the Node pushed at the very beginning */ 1306 1307 WalkState->Operands[0] = NULL; 1308 WalkState->NumOperands = 0; 1309 return_ACPI_STATUS (Status); 1310 } 1311 1312 1313