1 /****************************************************************************** 2 * 3 * Module Name: dswload - Dispatcher namespace load callbacks 4 * $Revision: 96 $ 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2005, 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_NAME ("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 (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 (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); 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_REPORT_NSERROR (Path, Status); 275 return (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_LOCAL_SCOPE: /* Scope */ 285 case ACPI_TYPE_DEVICE: 286 case ACPI_TYPE_POWER: 287 case ACPI_TYPE_PROCESSOR: 288 case ACPI_TYPE_THERMAL: 289 290 /* These are acceptable types */ 291 break; 292 293 case ACPI_TYPE_INTEGER: 294 case ACPI_TYPE_STRING: 295 case ACPI_TYPE_BUFFER: 296 297 /* 298 * These types we will allow, but we will change the type. This 299 * enables some existing code of the form: 300 * 301 * Name (DEB, 0) 302 * Scope (DEB) { ... } 303 * 304 * Note: silently change the type here. On the second pass, we will report 305 * a warning 306 */ 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_REPORT_ERROR (( 321 "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", 322 AcpiUtGetTypeName (Node->Type), Path)); 323 324 return (AE_AML_OPERAND_TYPE); 325 } 326 break; 327 328 329 default: 330 331 /* 332 * For all other named opcodes, we will enter the name into 333 * the namespace. 334 * 335 * Setup the search flags. 336 * Since we are entering a name into the namespace, we do not want to 337 * enable the search-to-root upsearch. 338 * 339 * There are only two conditions where it is acceptable that the name 340 * already exists: 341 * 1) the Scope() operator can reopen a scoping object that was 342 * previously defined (Scope, Method, Device, etc.) 343 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer, 344 * BufferField, or Package), the name of the object is already 345 * in the namespace. 346 */ 347 if (WalkState->DeferredNode) 348 { 349 /* This name is already in the namespace, get the node */ 350 351 Node = WalkState->DeferredNode; 352 Status = AE_OK; 353 break; 354 } 355 356 Flags = ACPI_NS_NO_UPSEARCH; 357 if ((WalkState->Opcode != AML_SCOPE_OP) && 358 (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP))) 359 { 360 Flags |= ACPI_NS_ERROR_IF_FOUND; 361 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", 362 AcpiUtGetTypeName (ObjectType))); 363 } 364 else 365 { 366 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 367 "[%s] Both Find or Create allowed\n", 368 AcpiUtGetTypeName (ObjectType))); 369 } 370 371 /* 372 * Enter the named type into the internal namespace. We enter the name 373 * as we go downward in the parse tree. Any necessary subobjects that 374 * involve arguments to the opcode must be created as we go back up the 375 * parse tree later. 376 */ 377 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 378 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node)); 379 if (ACPI_FAILURE (Status)) 380 { 381 ACPI_REPORT_NSERROR (Path, Status); 382 return (Status); 383 } 384 break; 385 } 386 387 388 /* Common exit */ 389 390 if (!Op) 391 { 392 /* Create a new op */ 393 394 Op = AcpiPsAllocOp (WalkState->Opcode); 395 if (!Op) 396 { 397 return (AE_NO_MEMORY); 398 } 399 } 400 401 /* Initialize */ 402 403 Op->Named.Name = Node->Name.Integer; 404 405 #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) 406 Op->Named.Path = (UINT8 *) Path; 407 #endif 408 409 410 /* 411 * Put the Node in the "op" object that the parser uses, so we 412 * can get it again quickly when this scope is closed 413 */ 414 Op->Common.Node = Node; 415 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op); 416 417 *OutOp = Op; 418 return (Status); 419 } 420 421 422 /******************************************************************************* 423 * 424 * FUNCTION: AcpiDsLoad1EndOp 425 * 426 * PARAMETERS: WalkState - Current state of the parse tree walk 427 * 428 * RETURN: Status 429 * 430 * DESCRIPTION: Ascending callback used during the loading of the namespace, 431 * both control methods and everything else. 432 * 433 ******************************************************************************/ 434 435 ACPI_STATUS 436 AcpiDsLoad1EndOp ( 437 ACPI_WALK_STATE *WalkState) 438 { 439 ACPI_PARSE_OBJECT *Op; 440 ACPI_OBJECT_TYPE ObjectType; 441 ACPI_STATUS Status = AE_OK; 442 443 444 ACPI_FUNCTION_NAME ("DsLoad1EndOp"); 445 446 447 Op = WalkState->Op; 448 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 449 450 /* We are only interested in opcodes that have an associated name */ 451 452 if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD))) 453 { 454 return (AE_OK); 455 } 456 457 /* Get the object type to determine if we should pop the scope */ 458 459 ObjectType = WalkState->OpInfo->ObjectType; 460 461 #ifndef ACPI_NO_METHOD_EXECUTION 462 if (WalkState->OpInfo->Flags & AML_FIELD) 463 { 464 if (WalkState->Opcode == AML_FIELD_OP || 465 WalkState->Opcode == AML_BANK_FIELD_OP || 466 WalkState->Opcode == AML_INDEX_FIELD_OP) 467 { 468 Status = AcpiDsInitFieldObjects (Op, WalkState); 469 } 470 return (Status); 471 } 472 473 474 if (Op->Common.AmlOpcode == AML_REGION_OP) 475 { 476 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, 477 (ACPI_ADR_SPACE_TYPE) 478 ((Op->Common.Value.Arg)->Common.Value.Integer), 479 WalkState); 480 if (ACPI_FAILURE (Status)) 481 { 482 return (Status); 483 } 484 } 485 #endif 486 487 if (Op->Common.AmlOpcode == AML_NAME_OP) 488 { 489 /* For Name opcode, get the object type from the argument */ 490 491 if (Op->Common.Value.Arg) 492 { 493 ObjectType = (AcpiPsGetOpcodeInfo ( 494 (Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType; 495 Op->Common.Node->Type = (UINT8) ObjectType; 496 } 497 } 498 499 if (Op->Common.AmlOpcode == AML_METHOD_OP) 500 { 501 /* 502 * MethodOp PkgLength NameString MethodFlags TermList 503 * 504 * Note: We must create the method node/object pair as soon as we 505 * see the method declaration. This allows later pass1 parsing 506 * of invocations of the method (need to know the number of 507 * arguments.) 508 */ 509 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 510 "LOADING-Method: State=%p Op=%p NamedObj=%p\n", 511 WalkState, Op, Op->Named.Node)); 512 513 if (!AcpiNsGetAttachedObject (Op->Named.Node)) 514 { 515 WalkState->Operands[0] = (void *) Op->Named.Node; 516 WalkState->NumOperands = 1; 517 518 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 519 if (ACPI_SUCCESS (Status)) 520 { 521 Status = AcpiExCreateMethod (Op->Named.Data, 522 Op->Named.Length, WalkState); 523 } 524 WalkState->Operands[0] = NULL; 525 WalkState->NumOperands = 0; 526 527 if (ACPI_FAILURE (Status)) 528 { 529 return (Status); 530 } 531 } 532 } 533 534 /* Pop the scope stack */ 535 536 if (AcpiNsOpensScope (ObjectType)) 537 { 538 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", 539 AcpiUtGetTypeName (ObjectType), Op)); 540 541 Status = AcpiDsScopeStackPop (WalkState); 542 } 543 544 return (Status); 545 } 546 547 548 /******************************************************************************* 549 * 550 * FUNCTION: AcpiDsLoad2BeginOp 551 * 552 * PARAMETERS: WalkState - Current state of the parse tree walk 553 * OutOp - Wher to return op if a new one is created 554 * 555 * RETURN: Status 556 * 557 * DESCRIPTION: Descending callback used during the loading of ACPI tables. 558 * 559 ******************************************************************************/ 560 561 ACPI_STATUS 562 AcpiDsLoad2BeginOp ( 563 ACPI_WALK_STATE *WalkState, 564 ACPI_PARSE_OBJECT **OutOp) 565 { 566 ACPI_PARSE_OBJECT *Op; 567 ACPI_NAMESPACE_NODE *Node; 568 ACPI_STATUS Status; 569 ACPI_OBJECT_TYPE ObjectType; 570 char *BufferPtr; 571 572 573 ACPI_FUNCTION_TRACE ("DsLoad2BeginOp"); 574 575 576 Op = WalkState->Op; 577 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); 578 579 if (Op) 580 { 581 if ((WalkState->ControlState) && 582 (WalkState->ControlState->Common.State == 583 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 584 { 585 /* We are executing a while loop outside of a method */ 586 587 Status = AcpiDsExecBeginOp (WalkState, OutOp); 588 return_ACPI_STATUS (Status); 589 } 590 591 /* We only care about Namespace opcodes here */ 592 593 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) && 594 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) || 595 (!(WalkState->OpInfo->Flags & AML_NAMED))) 596 { 597 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) || 598 (WalkState->OpInfo->Class == AML_CLASS_CONTROL)) 599 { 600 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 601 "Begin/EXEC: %s (fl %8.8X)\n", WalkState->OpInfo->Name, 602 WalkState->OpInfo->Flags)); 603 604 /* Executing a type1 or type2 opcode outside of a method */ 605 606 Status = AcpiDsExecBeginOp (WalkState, OutOp); 607 return_ACPI_STATUS (Status); 608 } 609 return_ACPI_STATUS (AE_OK); 610 } 611 612 /* Get the name we are going to enter or lookup in the namespace */ 613 614 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 615 { 616 /* For Namepath op, get the path string */ 617 618 BufferPtr = Op->Common.Value.String; 619 if (!BufferPtr) 620 { 621 /* No name, just exit */ 622 623 return_ACPI_STATUS (AE_OK); 624 } 625 } 626 else 627 { 628 /* Get name from the op */ 629 630 BufferPtr = (char *) &Op->Named.Name; 631 } 632 } 633 else 634 { 635 /* Get the namestring from the raw AML */ 636 637 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState); 638 } 639 640 /* Map the opcode into an internal object type */ 641 642 ObjectType = WalkState->OpInfo->ObjectType; 643 644 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 645 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType)); 646 647 648 switch (WalkState->Opcode) 649 { 650 case AML_FIELD_OP: 651 case AML_BANK_FIELD_OP: 652 case AML_INDEX_FIELD_OP: 653 654 Node = NULL; 655 Status = AE_OK; 656 break; 657 658 case AML_INT_NAMEPATH_OP: 659 660 /* 661 * The NamePath is an object reference to an existing object. 662 * Don't enter the name into the namespace, but look it up 663 * for use later. 664 */ 665 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 666 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 667 WalkState, &(Node)); 668 break; 669 670 case AML_SCOPE_OP: 671 672 /* 673 * The Path is an object reference to an existing object. 674 * Don't enter the name into the namespace, but look it up 675 * for use later. 676 */ 677 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 678 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 679 WalkState, &(Node)); 680 if (ACPI_FAILURE (Status)) 681 { 682 #ifdef ACPI_ASL_COMPILER 683 if (Status == AE_NOT_FOUND) 684 { 685 Status = AE_OK; 686 } 687 else 688 { 689 ACPI_REPORT_NSERROR (BufferPtr, Status); 690 } 691 #else 692 ACPI_REPORT_NSERROR (BufferPtr, Status); 693 #endif 694 return_ACPI_STATUS (Status); 695 } 696 /* 697 * We must check to make sure that the target is 698 * one of the opcodes that actually opens a scope 699 */ 700 switch (Node->Type) 701 { 702 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ 703 case ACPI_TYPE_DEVICE: 704 case ACPI_TYPE_POWER: 705 case ACPI_TYPE_PROCESSOR: 706 case ACPI_TYPE_THERMAL: 707 708 /* These are acceptable types */ 709 break; 710 711 case ACPI_TYPE_INTEGER: 712 case ACPI_TYPE_STRING: 713 case ACPI_TYPE_BUFFER: 714 715 /* 716 * These types we will allow, but we will change the type. This 717 * enables some existing code of the form: 718 * 719 * Name (DEB, 0) 720 * Scope (DEB) { ... } 721 */ 722 723 ACPI_REPORT_WARNING (( 724 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", 725 BufferPtr, AcpiUtGetTypeName (Node->Type))); 726 727 Node->Type = ACPI_TYPE_ANY; 728 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; 729 break; 730 731 default: 732 733 /* All other types are an error */ 734 735 ACPI_REPORT_ERROR (( 736 "Invalid type (%s) for target of Scope operator [%4.4s]\n", 737 AcpiUtGetTypeName (Node->Type), BufferPtr)); 738 739 return (AE_AML_OPERAND_TYPE); 740 } 741 break; 742 743 default: 744 745 /* All other opcodes */ 746 747 if (Op && Op->Common.Node) 748 { 749 /* This op/node was previously entered into the namespace */ 750 751 Node = Op->Common.Node; 752 753 if (AcpiNsOpensScope (ObjectType)) 754 { 755 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); 756 if (ACPI_FAILURE (Status)) 757 { 758 return_ACPI_STATUS (Status); 759 } 760 761 } 762 return_ACPI_STATUS (AE_OK); 763 } 764 765 /* 766 * Enter the named type into the internal namespace. We enter the name 767 * as we go downward in the parse tree. Any necessary subobjects that 768 * involve arguments to the opcode must be created as we go back up the 769 * parse tree later. 770 * 771 * Note: Name may already exist if we are executing a deferred opcode. 772 */ 773 if (WalkState->DeferredNode) 774 { 775 /* This name is already in the namespace, get the node */ 776 777 Node = WalkState->DeferredNode; 778 Status = AE_OK; 779 break; 780 } 781 782 /* Add new entry into namespace */ 783 784 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType, 785 ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH, 786 WalkState, &(Node)); 787 break; 788 } 789 790 if (ACPI_FAILURE (Status)) 791 { 792 ACPI_REPORT_NSERROR (BufferPtr, Status); 793 return_ACPI_STATUS (Status); 794 } 795 796 if (!Op) 797 { 798 /* Create a new op */ 799 800 Op = AcpiPsAllocOp (WalkState->Opcode); 801 if (!Op) 802 { 803 return_ACPI_STATUS (AE_NO_MEMORY); 804 } 805 806 /* Initialize the new op */ 807 808 if (Node) 809 { 810 Op->Named.Name = Node->Name.Integer; 811 } 812 *OutOp = Op; 813 } 814 815 /* 816 * Put the Node in the "op" object that the parser uses, so we 817 * can get it again quickly when this scope is closed 818 */ 819 Op->Common.Node = Node; 820 821 return_ACPI_STATUS (Status); 822 } 823 824 825 /******************************************************************************* 826 * 827 * FUNCTION: AcpiDsLoad2EndOp 828 * 829 * PARAMETERS: WalkState - Current state of the parse tree walk 830 * 831 * RETURN: Status 832 * 833 * DESCRIPTION: Ascending callback used during the loading of the namespace, 834 * both control methods and everything else. 835 * 836 ******************************************************************************/ 837 838 ACPI_STATUS 839 AcpiDsLoad2EndOp ( 840 ACPI_WALK_STATE *WalkState) 841 { 842 ACPI_PARSE_OBJECT *Op; 843 ACPI_STATUS Status = AE_OK; 844 ACPI_OBJECT_TYPE ObjectType; 845 ACPI_NAMESPACE_NODE *Node; 846 ACPI_PARSE_OBJECT *Arg; 847 ACPI_NAMESPACE_NODE *NewNode; 848 #ifndef ACPI_NO_METHOD_EXECUTION 849 UINT32 i; 850 #endif 851 852 853 ACPI_FUNCTION_TRACE ("DsLoad2EndOp"); 854 855 Op = WalkState->Op; 856 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", 857 WalkState->OpInfo->Name, Op, WalkState)); 858 859 /* Check if opcode had an associated namespace object */ 860 861 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT)) 862 { 863 #ifndef ACPI_NO_METHOD_EXECUTION 864 /* No namespace object. Executable opcode? */ 865 866 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) || 867 (WalkState->OpInfo->Class == AML_CLASS_CONTROL)) 868 { 869 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 870 "End/EXEC: %s (fl %8.8X)\n", WalkState->OpInfo->Name, 871 WalkState->OpInfo->Flags)); 872 873 /* Executing a type1 or type2 opcode outside of a method */ 874 875 Status = AcpiDsExecEndOp (WalkState); 876 return_ACPI_STATUS (Status); 877 } 878 #endif 879 return_ACPI_STATUS (AE_OK); 880 } 881 882 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 883 { 884 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 885 "Ending scope Op=%p State=%p\n", Op, WalkState)); 886 } 887 888 ObjectType = WalkState->OpInfo->ObjectType; 889 890 /* 891 * Get the Node/name from the earlier lookup 892 * (It was saved in the *op structure) 893 */ 894 Node = Op->Common.Node; 895 896 /* 897 * Put the Node on the object stack (Contains the ACPI Name of 898 * this object) 899 */ 900 WalkState->Operands[0] = (void *) Node; 901 WalkState->NumOperands = 1; 902 903 /* Pop the scope stack */ 904 905 if (AcpiNsOpensScope (ObjectType) && 906 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)) 907 { 908 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", 909 AcpiUtGetTypeName (ObjectType), Op)); 910 911 Status = AcpiDsScopeStackPop (WalkState); 912 if (ACPI_FAILURE (Status)) 913 { 914 goto Cleanup; 915 } 916 } 917 918 /* 919 * Named operations are as follows: 920 * 921 * AML_ALIAS 922 * AML_BANKFIELD 923 * AML_CREATEBITFIELD 924 * AML_CREATEBYTEFIELD 925 * AML_CREATEDWORDFIELD 926 * AML_CREATEFIELD 927 * AML_CREATEQWORDFIELD 928 * AML_CREATEWORDFIELD 929 * AML_DATA_REGION 930 * AML_DEVICE 931 * AML_EVENT 932 * AML_FIELD 933 * AML_INDEXFIELD 934 * AML_METHOD 935 * AML_METHODCALL 936 * AML_MUTEX 937 * AML_NAME 938 * AML_NAMEDFIELD 939 * AML_OPREGION 940 * AML_POWERRES 941 * AML_PROCESSOR 942 * AML_SCOPE 943 * AML_THERMALZONE 944 */ 945 946 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 947 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", 948 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node)); 949 950 /* Decode the opcode */ 951 952 Arg = Op->Common.Value.Arg; 953 954 switch (WalkState->OpInfo->Type) 955 { 956 #ifndef ACPI_NO_METHOD_EXECUTION 957 958 case AML_TYPE_CREATE_FIELD: 959 960 /* 961 * Create the field object, but the field buffer and index must 962 * be evaluated later during the execution phase 963 */ 964 Status = AcpiDsCreateBufferField (Op, WalkState); 965 break; 966 967 968 case AML_TYPE_NAMED_FIELD: 969 970 switch (Op->Common.AmlOpcode) 971 { 972 case AML_INDEX_FIELD_OP: 973 974 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node, 975 WalkState); 976 break; 977 978 case AML_BANK_FIELD_OP: 979 980 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState); 981 break; 982 983 case AML_FIELD_OP: 984 985 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState); 986 break; 987 988 default: 989 /* All NAMED_FIELD opcodes must be handled above */ 990 break; 991 } 992 break; 993 994 995 case AML_TYPE_NAMED_SIMPLE: 996 997 Status = AcpiDsCreateOperands (WalkState, Arg); 998 if (ACPI_FAILURE (Status)) 999 { 1000 goto Cleanup; 1001 } 1002 1003 switch (Op->Common.AmlOpcode) 1004 { 1005 case AML_PROCESSOR_OP: 1006 1007 Status = AcpiExCreateProcessor (WalkState); 1008 break; 1009 1010 case AML_POWER_RES_OP: 1011 1012 Status = AcpiExCreatePowerResource (WalkState); 1013 break; 1014 1015 case AML_MUTEX_OP: 1016 1017 Status = AcpiExCreateMutex (WalkState); 1018 break; 1019 1020 case AML_EVENT_OP: 1021 1022 Status = AcpiExCreateEvent (WalkState); 1023 break; 1024 1025 case AML_DATA_REGION_OP: 1026 1027 Status = AcpiExCreateTableRegion (WalkState); 1028 break; 1029 1030 case AML_ALIAS_OP: 1031 1032 Status = AcpiExCreateAlias (WalkState); 1033 break; 1034 1035 default: 1036 /* Unknown opcode */ 1037 1038 Status = AE_OK; 1039 goto Cleanup; 1040 } 1041 1042 /* Delete operands */ 1043 1044 for (i = 1; i < WalkState->NumOperands; i++) 1045 { 1046 AcpiUtRemoveReference (WalkState->Operands[i]); 1047 WalkState->Operands[i] = NULL; 1048 } 1049 1050 break; 1051 #endif /* ACPI_NO_METHOD_EXECUTION */ 1052 1053 case AML_TYPE_NAMED_COMPLEX: 1054 1055 switch (Op->Common.AmlOpcode) 1056 { 1057 #ifndef ACPI_NO_METHOD_EXECUTION 1058 case AML_REGION_OP: 1059 /* 1060 * The OpRegion is not fully parsed at this time. Only valid 1061 * argument is the SpaceId. (We must save the address of the 1062 * AML of the address and length operands) 1063 */ 1064 /* 1065 * If we have a valid region, initialize it 1066 * Namespace is NOT locked at this point. 1067 */ 1068 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node), 1069 FALSE); 1070 if (ACPI_FAILURE (Status)) 1071 { 1072 /* 1073 * If AE_NOT_EXIST is returned, it is not fatal 1074 * because many regions get created before a handler 1075 * is installed for said region. 1076 */ 1077 if (AE_NOT_EXIST == Status) 1078 { 1079 Status = AE_OK; 1080 } 1081 } 1082 break; 1083 1084 1085 case AML_NAME_OP: 1086 1087 Status = AcpiDsCreateNode (WalkState, Node, Op); 1088 break; 1089 #endif /* ACPI_NO_METHOD_EXECUTION */ 1090 1091 1092 default: 1093 /* All NAMED_COMPLEX opcodes must be handled above */ 1094 /* Note: Method objects were already created in Pass 1 */ 1095 break; 1096 } 1097 break; 1098 1099 1100 case AML_CLASS_INTERNAL: 1101 1102 /* case AML_INT_NAMEPATH_OP: */ 1103 break; 1104 1105 1106 case AML_CLASS_METHOD_CALL: 1107 1108 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1109 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", 1110 WalkState, Op, Node)); 1111 1112 /* 1113 * Lookup the method name and save the Node 1114 */ 1115 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, 1116 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2, 1117 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 1118 WalkState, &(NewNode)); 1119 if (ACPI_SUCCESS (Status)) 1120 { 1121 /* 1122 * Make sure that what we found is indeed a method 1123 * We didn't search for a method on purpose, to see if the name 1124 * would resolve 1125 */ 1126 if (NewNode->Type != ACPI_TYPE_METHOD) 1127 { 1128 Status = AE_AML_OPERAND_TYPE; 1129 } 1130 1131 /* We could put the returned object (Node) on the object stack for 1132 * later, but for now, we will put it in the "op" object that the 1133 * parser uses, so we can get it again at the end of this scope 1134 */ 1135 Op->Common.Node = NewNode; 1136 } 1137 else 1138 { 1139 ACPI_REPORT_NSERROR (Arg->Common.Value.String, Status); 1140 } 1141 break; 1142 1143 1144 default: 1145 break; 1146 } 1147 1148 Cleanup: 1149 1150 /* Remove the Node pushed at the very beginning */ 1151 1152 WalkState->Operands[0] = NULL; 1153 WalkState->NumOperands = 0; 1154 return_ACPI_STATUS (Status); 1155 } 1156 1157 1158