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 - 2010, 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. 300 * This 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, 306 * we will report a warning 307 */ 308 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 309 "Type override - [%4.4s] had invalid type (%s) " 310 "for Scope operator, changed to type ANY\n", 311 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type))); 312 313 Node->Type = ACPI_TYPE_ANY; 314 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 315 break; 316 317 default: 318 319 /* All other types are an error */ 320 321 ACPI_ERROR ((AE_INFO, 322 "Invalid type (%s) for target of " 323 "Scope operator [%4.4s] (Cannot override)", 324 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node))); 325 326 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 327 } 328 break; 329 330 331 default: 332 /* 333 * For all other named opcodes, we will enter the name into 334 * the namespace. 335 * 336 * Setup the search flags. 337 * Since we are entering a name into the namespace, we do not want to 338 * enable the search-to-root upsearch. 339 * 340 * There are only two conditions where it is acceptable that the name 341 * already exists: 342 * 1) the Scope() operator can reopen a scoping object that was 343 * previously defined (Scope, Method, Device, etc.) 344 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer, 345 * BufferField, or Package), the name of the object is already 346 * in the namespace. 347 */ 348 if (WalkState->DeferredNode) 349 { 350 /* This name is already in the namespace, get the node */ 351 352 Node = WalkState->DeferredNode; 353 Status = AE_OK; 354 break; 355 } 356 357 /* 358 * If we are executing a method, do not create any namespace objects 359 * during the load phase, only during execution. 360 */ 361 if (WalkState->MethodNode) 362 { 363 Node = NULL; 364 Status = AE_OK; 365 break; 366 } 367 368 Flags = ACPI_NS_NO_UPSEARCH; 369 if ((WalkState->Opcode != AML_SCOPE_OP) && 370 (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP))) 371 { 372 Flags |= ACPI_NS_ERROR_IF_FOUND; 373 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", 374 AcpiUtGetTypeName (ObjectType))); 375 } 376 else 377 { 378 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 379 "[%s] Both Find or Create allowed\n", 380 AcpiUtGetTypeName (ObjectType))); 381 } 382 383 /* 384 * Enter the named type into the internal namespace. We enter the name 385 * as we go downward in the parse tree. Any necessary subobjects that 386 * involve arguments to the opcode must be created as we go back up the 387 * parse tree later. 388 */ 389 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 390 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); 391 if (ACPI_FAILURE (Status)) 392 { 393 if (Status == AE_ALREADY_EXISTS) 394 { 395 /* The name already exists in this scope */ 396 397 if (Node->Flags & ANOBJ_IS_EXTERNAL) 398 { 399 /* 400 * Allow one create on an object or segment that was 401 * previously declared External 402 */ 403 Node->Flags &= ~ANOBJ_IS_EXTERNAL; 404 Node->Type = (UINT8) ObjectType; 405 406 /* Just retyped a node, probably will need to open a scope */ 407 408 if (AcpiNsOpensScope (ObjectType)) 409 { 410 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 411 if (ACPI_FAILURE (Status)) 412 { 413 return_ACPI_STATUS (Status); 414 } 415 } 416 417 Status = AE_OK; 418 } 419 } 420 421 if (ACPI_FAILURE (Status)) 422 { 423 ACPI_ERROR_NAMESPACE (Path, Status); 424 return_ACPI_STATUS (Status); 425 } 426 } 427 break; 428 } 429 430 /* Common exit */ 431 432 if (!Op) 433 { 434 /* Create a new op */ 435 436 Op = AcpiPsAllocOp (WalkState->Opcode); 437 if (!Op) 438 { 439 return_ACPI_STATUS (AE_NO_MEMORY); 440 } 441 } 442 443 /* Initialize the op */ 444 445 #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) 446 Op->Named.Path = ACPI_CAST_PTR (UINT8, Path); 447 #endif 448 449 if (Node) 450 { 451 /* 452 * Put the Node in the "op" object that the parser uses, so we 453 * can get it again quickly when this scope is closed 454 */ 455 Op->Common.Node = Node; 456 Op->Named.Name = Node->Name.Integer; 457 } 458 459 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op); 460 *OutOp = Op; 461 return_ACPI_STATUS (Status); 462 } 463 464 465 /******************************************************************************* 466 * 467 * FUNCTION: AcpiDsLoad1EndOp 468 * 469 * PARAMETERS: WalkState - Current state of the parse tree walk 470 * 471 * RETURN: Status 472 * 473 * DESCRIPTION: Ascending callback used during the loading of the namespace, 474 * both control methods and everything else. 475 * 476 ******************************************************************************/ 477 478 ACPI_STATUS 479 AcpiDsLoad1EndOp ( 480 ACPI_WALK_STATE *WalkState) 481 { 482 ACPI_PARSE_OBJECT *Op; 483 ACPI_OBJECT_TYPE ObjectType; 484 ACPI_STATUS Status = AE_OK; 485 486 487 ACPI_FUNCTION_TRACE (DsLoad1EndOp); 488 489 490 Op = WalkState->Op; 491 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 492 493 /* We are only interested in opcodes that have an associated name */ 494 495 if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD))) 496 { 497 return_ACPI_STATUS (AE_OK); 498 } 499 500 /* Get the object type to determine if we should pop the scope */ 501 502 ObjectType = WalkState->OpInfo->ObjectType; 503 504 #ifndef ACPI_NO_METHOD_EXECUTION 505 if (WalkState->OpInfo->Flags & AML_FIELD) 506 { 507 /* 508 * If we are executing a method, do not create any namespace objects 509 * during the load phase, only during execution. 510 */ 511 if (!WalkState->MethodNode) 512 { 513 if (WalkState->Opcode == AML_FIELD_OP || 514 WalkState->Opcode == AML_BANK_FIELD_OP || 515 WalkState->Opcode == AML_INDEX_FIELD_OP) 516 { 517 Status = AcpiDsInitFieldObjects (Op, WalkState); 518 } 519 } 520 return_ACPI_STATUS (Status); 521 } 522 523 /* 524 * If we are executing a method, do not create any namespace objects 525 * during the load phase, only during execution. 526 */ 527 if (!WalkState->MethodNode) 528 { 529 if (Op->Common.AmlOpcode == AML_REGION_OP) 530 { 531 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 532 (ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer), 533 WalkState); 534 if (ACPI_FAILURE (Status)) 535 { 536 return_ACPI_STATUS (Status); 537 } 538 } 539 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP) 540 { 541 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 542 REGION_DATA_TABLE, WalkState); 543 if (ACPI_FAILURE (Status)) 544 { 545 return_ACPI_STATUS (Status); 546 } 547 } 548 } 549 #endif 550 551 if (Op->Common.AmlOpcode == AML_NAME_OP) 552 { 553 /* For Name opcode, get the object type from the argument */ 554 555 if (Op->Common.Value.Arg) 556 { 557 ObjectType = (AcpiPsGetOpcodeInfo ( 558 (Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType; 559 560 /* Set node type if we have a namespace node */ 561 562 if (Op->Common.Node) 563 { 564 Op->Common.Node->Type = (UINT8) ObjectType; 565 } 566 } 567 } 568 569 /* 570 * If we are executing a method, do not create any namespace objects 571 * during the load phase, only during execution. 572 */ 573 if (!WalkState->MethodNode) 574 { 575 if (Op->Common.AmlOpcode == AML_METHOD_OP) 576 { 577 /* 578 * MethodOp PkgLength NameString MethodFlags TermList 579 * 580 * Note: We must create the method node/object pair as soon as we 581 * see the method declaration. This allows later pass1 parsing 582 * of invocations of the method (need to know the number of 583 * arguments.) 584 */ 585 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 586 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 587 WalkState, Op, Op->Named.Node)); 588 589 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 590 { 591 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); 592 WalkState->NumOperands = 1; 593 594 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 595 if (ACPI_SUCCESS (Status)) 596 { 597 Status = AcpiExCreateMethod (Op->Named.Data, 598 Op->Named.Length, WalkState); 599 } 600 601 WalkState->Operands[0] = NULL; 602 WalkState->NumOperands = 0; 603 604 if (ACPI_FAILURE (Status)) 605 { 606 return_ACPI_STATUS (Status); 607 } 608 } 609 } 610 } 611 612 /* Pop the scope stack (only if loading a table) */ 613 614 if (!WalkState->MethodNode && 615 AcpiNsOpensScope (ObjectType)) 616 { 617 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", 618 AcpiUtGetTypeName (ObjectType), Op)); 619 620 Status = AcpiDsScopeStackPop (WalkState); 621 } 622 623 return_ACPI_STATUS (Status); 624 } 625 626 627 /******************************************************************************* 628 * 629 * FUNCTION: AcpiDsLoad2BeginOp 630 * 631 * PARAMETERS: WalkState - Current state of the parse tree walk 632 * OutOp - Wher to return op if a new one is created 633 * 634 * RETURN: Status 635 * 636 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 637 * 638 ******************************************************************************/ 639 640 ACPI_STATUS 641 AcpiDsLoad2BeginOp ( 642 ACPI_WALK_STATE *WalkState, 643 ACPI_PARSE_OBJECT **OutOp) 644 { 645 ACPI_PARSE_OBJECT *Op; 646 ACPI_NAMESPACE_NODE *Node; 647 ACPI_STATUS Status; 648 ACPI_OBJECT_TYPE ObjectType; 649 char *BufferPtr; 650 UINT32 Flags; 651 652 653 ACPI_FUNCTION_TRACE (DsLoad2BeginOp); 654 655 656 Op = WalkState->Op; 657 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 658 659 if (Op) 660 { 661 if ((WalkState->ControlState) && 662 (WalkState->ControlState->Common.State == 663 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 664 { 665 /* We are executing a while loop outside of a method */ 666 667 Status = AcpiDsExecBeginOp (WalkState, OutOp); 668 return_ACPI_STATUS (Status); 669 } 670 671 /* We only care about Namespace opcodes here */ 672 673 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && 674 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 675 (!(WalkState->OpInfo->Flags & AML_NAMED))) 676 { 677 return_ACPI_STATUS (AE_OK); 678 } 679 680 /* Get the name we are going to enter or lookup in the namespace */ 681 682 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 683 { 684 /* For Namepath op, get the path string */ 685 686 BufferPtr = Op->Common.Value.String; 687 if (!BufferPtr) 688 { 689 /* No name, just exit */ 690 691 return_ACPI_STATUS (AE_OK); 692 } 693 } 694 else 695 { 696 /* Get name from the op */ 697 698 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name); 699 } 700 } 701 else 702 { 703 /* Get the namestring from the raw AML */ 704 705 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 706 } 707 708 /* Map the opcode into an internal object type */ 709 710 ObjectType = WalkState->OpInfo->ObjectType; 711 712 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 713 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 714 715 switch (WalkState->Opcode) 716 { 717 case AML_FIELD_OP: 718 case AML_BANK_FIELD_OP: 719 case AML_INDEX_FIELD_OP: 720 721 Node = NULL; 722 Status = AE_OK; 723 break; 724 725 case AML_INT_NAMEPATH_OP: 726 /* 727 * The NamePath is an object reference to an existing object. 728 * Don't enter the name into the namespace, but look it up 729 * for use later. 730 */ 731 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 732 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 733 WalkState, &(Node)); 734 break; 735 736 case AML_SCOPE_OP: 737 738 /* Special case for Scope(\) -> refers to the Root node */ 739 740 if (Op && (Op->Named.Node == AcpiGbl_RootNode)) 741 { 742 Node = Op->Named.Node; 743 744 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 745 if (ACPI_FAILURE (Status)) 746 { 747 return_ACPI_STATUS (Status); 748 } 749 } 750 else 751 { 752 /* 753 * The Path is an object reference to an existing object. 754 * Don't enter the name into the namespace, but look it up 755 * for use later. 756 */ 757 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 758 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 759 WalkState, &(Node)); 760 if (ACPI_FAILURE (Status)) 761 { 762 #ifdef ACPI_ASL_COMPILER 763 if (Status == AE_NOT_FOUND) 764 { 765 Status = AE_OK; 766 } 767 else 768 { 769 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 770 } 771 #else 772 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 773 #endif 774 return_ACPI_STATUS (Status); 775 } 776 } 777 778 /* 779 * We must check to make sure that the target is 780 * one of the opcodes that actually opens a scope 781 */ 782 switch (Node->Type) 783 { 784 case ACPI_TYPE_ANY: 785 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 786 case ACPI_TYPE_DEVICE: 787 case ACPI_TYPE_POWER: 788 case ACPI_TYPE_PROCESSOR: 789 case ACPI_TYPE_THERMAL: 790 791 /* These are acceptable types */ 792 break; 793 794 case ACPI_TYPE_INTEGER: 795 case ACPI_TYPE_STRING: 796 case ACPI_TYPE_BUFFER: 797 798 /* 799 * These types we will allow, but we will change the type. 800 * This enables some existing code of the form: 801 * 802 * Name (DEB, 0) 803 * Scope (DEB) { ... } 804 */ 805 ACPI_WARNING ((AE_INFO, 806 "Type override - [%4.4s] had invalid type (%s) " 807 "for Scope operator, changed to type ANY\n", 808 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type))); 809 810 Node->Type = ACPI_TYPE_ANY; 811 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 812 break; 813 814 default: 815 816 /* All other types are an error */ 817 818 ACPI_ERROR ((AE_INFO, 819 "Invalid type (%s) for target of " 820 "Scope operator [%4.4s] (Cannot override)", 821 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node))); 822 823 return (AE_AML_OPERAND_TYPE); 824 } 825 break; 826 827 default: 828 829 /* All other opcodes */ 830 831 if (Op && Op->Common.Node) 832 { 833 /* This op/node was previously entered into the namespace */ 834 835 Node = Op->Common.Node; 836 837 if (AcpiNsOpensScope (ObjectType)) 838 { 839 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 840 if (ACPI_FAILURE (Status)) 841 { 842 return_ACPI_STATUS (Status); 843 } 844 } 845 846 return_ACPI_STATUS (AE_OK); 847 } 848 849 /* 850 * Enter the named type into the internal namespace. We enter the name 851 * as we go downward in the parse tree. Any necessary subobjects that 852 * involve arguments to the opcode must be created as we go back up the 853 * parse tree later. 854 * 855 * Note: Name may already exist if we are executing a deferred opcode. 856 */ 857 if (WalkState->DeferredNode) 858 { 859 /* This name is already in the namespace, get the node */ 860 861 Node = WalkState->DeferredNode; 862 Status = AE_OK; 863 break; 864 } 865 866 Flags = ACPI_NS_NO_UPSEARCH; 867 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE) 868 { 869 /* Execution mode, node cannot already exist, node is temporary */ 870 871 Flags |= ACPI_NS_ERROR_IF_FOUND; 872 873 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) 874 { 875 Flags |= ACPI_NS_TEMPORARY; 876 } 877 } 878 879 /* Add new entry or lookup existing entry */ 880 881 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 882 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node); 883 884 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY)) 885 { 886 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 887 "***New Node [%4.4s] %p is temporary\n", 888 AcpiUtGetNodeName (Node), Node)); 889 } 890 break; 891 } 892 893 if (ACPI_FAILURE (Status)) 894 { 895 ACPI_ERROR_NAMESPACE (BufferPtr, Status); 896 return_ACPI_STATUS (Status); 897 } 898 899 if (!Op) 900 { 901 /* Create a new op */ 902 903 Op = AcpiPsAllocOp (WalkState->Opcode); 904 if (!Op) 905 { 906 return_ACPI_STATUS (AE_NO_MEMORY); 907 } 908 909 /* Initialize the new op */ 910 911 if (Node) 912 { 913 Op->Named.Name = Node->Name.Integer; 914 } 915 *OutOp = Op; 916 } 917 918 /* 919 * Put the Node in the "op" object that the parser uses, so we 920 * can get it again quickly when this scope is closed 921 */ 922 Op->Common.Node = Node; 923 return_ACPI_STATUS (Status); 924 } 925 926 927 /******************************************************************************* 928 * 929 * FUNCTION: AcpiDsLoad2EndOp 930 * 931 * PARAMETERS: WalkState - Current state of the parse tree walk 932 * 933 * RETURN: Status 934 * 935 * DESCRIPTION: Ascending callback used during the loading of the namespace, 936 * both control methods and everything else. 937 * 938 ******************************************************************************/ 939 940 ACPI_STATUS 941 AcpiDsLoad2EndOp ( 942 ACPI_WALK_STATE *WalkState) 943 { 944 ACPI_PARSE_OBJECT *Op; 945 ACPI_STATUS Status = AE_OK; 946 ACPI_OBJECT_TYPE ObjectType; 947 ACPI_NAMESPACE_NODE *Node; 948 ACPI_PARSE_OBJECT *Arg; 949 ACPI_NAMESPACE_NODE *NewNode; 950 #ifndef ACPI_NO_METHOD_EXECUTION 951 UINT32 i; 952 UINT8 RegionSpace; 953 #endif 954 955 956 ACPI_FUNCTION_TRACE (DsLoad2EndOp); 957 958 Op = WalkState->Op; 959 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 960 WalkState->OpInfo->Name, Op, WalkState)); 961 962 /* Check if opcode had an associated namespace object */ 963 964 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 965 { 966 return_ACPI_STATUS (AE_OK); 967 } 968 969 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 970 { 971 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 972 "Ending scope Op=%p State=%p\n", Op, WalkState)); 973 } 974 975 ObjectType = WalkState->OpInfo->ObjectType; 976 977 /* 978 * Get the Node/name from the earlier lookup 979 * (It was saved in the *op structure) 980 */ 981 Node = Op->Common.Node; 982 983 /* 984 * Put the Node on the object stack (Contains the ACPI Name of 985 * this object) 986 */ 987 WalkState->Operands[0] = (void *) Node; 988 WalkState->NumOperands = 1; 989 990 /* Pop the scope stack */ 991 992 if (AcpiNsOpensScope (ObjectType) && 993 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 994 { 995 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 996 AcpiUtGetTypeName (ObjectType), Op)); 997 998 Status = AcpiDsScopeStackPop (WalkState); 999 if (ACPI_FAILURE (Status)) 1000 { 1001 goto Cleanup; 1002 } 1003 } 1004 1005 /* 1006 * Named operations are as follows: 1007 * 1008 * AML_ALIAS 1009 * AML_BANKFIELD 1010 * AML_CREATEBITFIELD 1011 * AML_CREATEBYTEFIELD 1012 * AML_CREATEDWORDFIELD 1013 * AML_CREATEFIELD 1014 * AML_CREATEQWORDFIELD 1015 * AML_CREATEWORDFIELD 1016 * AML_DATA_REGION 1017 * AML_DEVICE 1018 * AML_EVENT 1019 * AML_FIELD 1020 * AML_INDEXFIELD 1021 * AML_METHOD 1022 * AML_METHODCALL 1023 * AML_MUTEX 1024 * AML_NAME 1025 * AML_NAMEDFIELD 1026 * AML_OPREGION 1027 * AML_POWERRES 1028 * AML_PROCESSOR 1029 * AML_SCOPE 1030 * AML_THERMALZONE 1031 */ 1032 1033 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1034 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 1035 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 1036 1037 /* Decode the opcode */ 1038 1039 Arg = Op->Common.Value.Arg; 1040 1041 switch (WalkState->OpInfo->Type) 1042 { 1043 #ifndef ACPI_NO_METHOD_EXECUTION 1044 1045 case AML_TYPE_CREATE_FIELD: 1046 /* 1047 * Create the field object, but the field buffer and index must 1048 * be evaluated later during the execution phase 1049 */ 1050 Status = AcpiDsCreateBufferField (Op, WalkState); 1051 break; 1052 1053 1054 case AML_TYPE_NAMED_FIELD: 1055 /* 1056 * If we are executing a method, initialize the field 1057 */ 1058 if (WalkState->MethodNode) 1059 { 1060 Status = AcpiDsInitFieldObjects (Op, WalkState); 1061 } 1062 1063 switch (Op->Common.AmlOpcode) 1064 { 1065 case AML_INDEX_FIELD_OP: 1066 1067 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 1068 WalkState); 1069 break; 1070 1071 case AML_BANK_FIELD_OP: 1072 1073 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 1074 break; 1075 1076 case AML_FIELD_OP: 1077 1078 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 1079 break; 1080 1081 default: 1082 /* All NAMED_FIELD opcodes must be handled above */ 1083 break; 1084 } 1085 break; 1086 1087 1088 case AML_TYPE_NAMED_SIMPLE: 1089 1090 Status = AcpiDsCreateOperands (WalkState, Arg); 1091 if (ACPI_FAILURE (Status)) 1092 { 1093 goto Cleanup; 1094 } 1095 1096 switch (Op->Common.AmlOpcode) 1097 { 1098 case AML_PROCESSOR_OP: 1099 1100 Status = AcpiExCreateProcessor (WalkState); 1101 break; 1102 1103 case AML_POWER_RES_OP: 1104 1105 Status = AcpiExCreatePowerResource (WalkState); 1106 break; 1107 1108 case AML_MUTEX_OP: 1109 1110 Status = AcpiExCreateMutex (WalkState); 1111 break; 1112 1113 case AML_EVENT_OP: 1114 1115 Status = AcpiExCreateEvent (WalkState); 1116 break; 1117 1118 1119 case AML_ALIAS_OP: 1120 1121 Status = AcpiExCreateAlias (WalkState); 1122 break; 1123 1124 default: 1125 /* Unknown opcode */ 1126 1127 Status = AE_OK; 1128 goto Cleanup; 1129 } 1130 1131 /* Delete operands */ 1132 1133 for (i = 1; i < WalkState->NumOperands; i++) 1134 { 1135 AcpiUtRemoveReference (WalkState->Operands[i]); 1136 WalkState->Operands[i] = NULL; 1137 } 1138 1139 break; 1140 #endif /* ACPI_NO_METHOD_EXECUTION */ 1141 1142 case AML_TYPE_NAMED_COMPLEX: 1143 1144 switch (Op->Common.AmlOpcode) 1145 { 1146 #ifndef ACPI_NO_METHOD_EXECUTION 1147 case AML_REGION_OP: 1148 case AML_DATA_REGION_OP: 1149 1150 if (Op->Common.AmlOpcode == AML_REGION_OP) 1151 { 1152 RegionSpace = (ACPI_ADR_SPACE_TYPE) 1153 ((Op->Common.Value.Arg)->Common.Value.Integer); 1154 } 1155 else 1156 { 1157 RegionSpace = REGION_DATA_TABLE; 1158 } 1159 1160 /* 1161 * The OpRegion is not fully parsed at this time. The only valid 1162 * argument is the SpaceId. (We must save the address of the 1163 * AML of the address and length operands) 1164 * 1165 * If we have a valid region, initialize it. The namespace is 1166 * unlocked at this point. 1167 * 1168 * Need to unlock interpreter if it is locked (if we are running 1169 * a control method), in order to allow _REG methods to be run 1170 * during AcpiEvInitializeRegion. 1171 */ 1172 if (WalkState->MethodNode) 1173 { 1174 /* 1175 * Executing a method: initialize the region and unlock 1176 * the interpreter 1177 */ 1178 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 1179 RegionSpace, WalkState); 1180 if (ACPI_FAILURE (Status)) 1181 { 1182 return (Status); 1183 } 1184 1185 AcpiExExitInterpreter (); 1186 } 1187 1188 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), 1189 FALSE); 1190 if (WalkState->MethodNode) 1191 { 1192 AcpiExEnterInterpreter (); 1193 } 1194 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