1/****************************************************************************** 2 * 3 * Module Name: asllookup- Namespace lookup 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 *****************************************************************************/ 115 116 117#include <contrib/dev/acpica/compiler/aslcompiler.h> 118#include "aslcompiler.y.h" 119 120#include <contrib/dev/acpica/include/acparser.h> 121#include <contrib/dev/acpica/include/amlcode.h> 122#include <contrib/dev/acpica/include/acnamesp.h> 123#include <contrib/dev/acpica/include/acdispat.h> 124 125 126#define _COMPONENT ACPI_COMPILER 127 ACPI_MODULE_NAME ("asllookup") 128 129/* Local prototypes */ 130 131static ACPI_STATUS 132LsCompareOneNamespaceObject ( 133 ACPI_HANDLE ObjHandle, 134 UINT32 Level, 135 void *Context, 136 void **ReturnValue); 137 138static ACPI_STATUS 139LsDoOneNamespaceObject ( 140 ACPI_HANDLE ObjHandle, 141 UINT32 Level, 142 void *Context, 143 void **ReturnValue); 144 145static BOOLEAN 146LkObjectExists ( 147 char *Name); 148 149static void 150LkCheckFieldRange ( 151 ACPI_PARSE_OBJECT *Op, 152 UINT32 RegionBitLength, 153 UINT32 FieldBitOffset, 154 UINT32 FieldBitLength, 155 UINT32 AccessBitWidth); 156 157static ACPI_STATUS 158LkNamespaceLocateBegin ( 159 ACPI_PARSE_OBJECT *Op, 160 UINT32 Level, 161 void *Context); 162 163static ACPI_STATUS 164LkNamespaceLocateEnd ( 165 ACPI_PARSE_OBJECT *Op, 166 UINT32 Level, 167 void *Context); 168 169static ACPI_STATUS 170LkIsObjectUsed ( 171 ACPI_HANDLE ObjHandle, 172 UINT32 Level, 173 void *Context, 174 void **ReturnValue); 175 176static ACPI_STATUS 177LsDoOnePathname ( 178 ACPI_HANDLE ObjHandle, 179 UINT32 Level, 180 void *Context, 181 void **ReturnValue); 182 183void 184LsSetupNsList ( 185 void *Handle); 186 187ACPI_PARSE_OBJECT * 188LkGetNameOp ( 189 ACPI_PARSE_OBJECT *Op); 190 191 192/******************************************************************************* 193 * 194 * FUNCTION: LsDoOneNamespaceObject 195 * 196 * PARAMETERS: ACPI_WALK_CALLBACK 197 * 198 * RETURN: Status 199 * 200 * DESCRIPTION: Dump a namespace object to the namespace output file. 201 * Called during the walk of the namespace to dump all objects. 202 * 203 ******************************************************************************/ 204 205static ACPI_STATUS 206LsDoOneNamespaceObject ( 207 ACPI_HANDLE ObjHandle, 208 UINT32 Level, 209 void *Context, 210 void **ReturnValue) 211{ 212 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 213 ACPI_OPERAND_OBJECT *ObjDesc; 214 ACPI_PARSE_OBJECT *Op; 215 216 217 Gbl_NumNamespaceObjects++; 218 219 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "%5d [%d] %*s %4.4s - %s", 220 Gbl_NumNamespaceObjects, Level, (Level * 3), " ", 221 &Node->Name, 222 AcpiUtGetTypeName (Node->Type)); 223 224 Op = Node->Op; 225 ObjDesc = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Node->Object); 226 227 if (!Op) 228 { 229 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\n"); 230 return (AE_OK); 231 } 232 233 234 if ((ObjDesc) && 235 (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) == ACPI_DESC_TYPE_OPERAND)) 236 { 237 switch (Node->Type) 238 { 239 case ACPI_TYPE_INTEGER: 240 241 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 242 " [Initial Value 0x%8.8X%8.8X]", 243 ACPI_FORMAT_UINT64 (ObjDesc->Integer.Value)); 244 break; 245 246 247 case ACPI_TYPE_STRING: 248 249 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 250 " [Initial Value \"%s\"]", 251 ObjDesc->String.Pointer); 252 break; 253 254 default: 255 /* Nothing to do for other types */ 256 break; 257 } 258 259 } 260 else 261 { 262 switch (Node->Type) 263 { 264 case ACPI_TYPE_INTEGER: 265 266 if (Op->Asl.ParseOpcode == PARSEOP_NAME) 267 { 268 Op = Op->Asl.Child; 269 } 270 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 271 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) 272 { 273 Op = Op->Asl.Next; 274 } 275 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 276 " [Initial Value 0x%8.8X%8.8X]", 277 ACPI_FORMAT_UINT64 (Op->Asl.Value.Integer)); 278 break; 279 280 281 case ACPI_TYPE_STRING: 282 283 if (Op->Asl.ParseOpcode == PARSEOP_NAME) 284 { 285 Op = Op->Asl.Child; 286 } 287 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 288 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) 289 { 290 Op = Op->Asl.Next; 291 } 292 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 293 " [Initial Value \"%s\"]", 294 Op->Asl.Value.String); 295 break; 296 297 298 case ACPI_TYPE_LOCAL_REGION_FIELD: 299 300 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 301 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) 302 { 303 Op = Op->Asl.Child; 304 } 305 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 306 " [Offset 0x%04X Length 0x%04X bits]", 307 Op->Asl.Parent->Asl.ExtraValue, (UINT32) Op->Asl.Value.Integer); 308 break; 309 310 311 case ACPI_TYPE_BUFFER_FIELD: 312 313 switch (Op->Asl.ParseOpcode) 314 { 315 case PARSEOP_CREATEBYTEFIELD: 316 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [BYTE ( 8 bit)]"); 317 break; 318 319 case PARSEOP_CREATEDWORDFIELD: 320 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [DWORD (32 bit)]"); 321 break; 322 323 case PARSEOP_CREATEQWORDFIELD: 324 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [QWORD (64 bit)]"); 325 break; 326 327 case PARSEOP_CREATEWORDFIELD: 328 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [WORD (16 bit)]"); 329 break; 330 331 case PARSEOP_CREATEBITFIELD: 332 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [BIT ( 1 bit)]"); 333 break; 334 335 case PARSEOP_CREATEFIELD: 336 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [Arbitrary Bit Field]"); 337 break; 338 339 default: 340 break; 341 342 } 343 break; 344 345 346 case ACPI_TYPE_PACKAGE: 347 348 if (Op->Asl.ParseOpcode == PARSEOP_NAME) 349 { 350 Op = Op->Asl.Child; 351 } 352 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 353 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) 354 { 355 Op = Op->Asl.Next; 356 } 357 Op = Op->Asl.Child; 358 359 if ((Op->Asl.ParseOpcode == PARSEOP_BYTECONST) || 360 (Op->Asl.ParseOpcode == PARSEOP_RAW_DATA)) 361 { 362 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 363 " [Initial Length 0x%.2X elements]", 364 Op->Asl.Value.Integer); 365 } 366 break; 367 368 369 case ACPI_TYPE_BUFFER: 370 371 if (Op->Asl.ParseOpcode == PARSEOP_NAME) 372 { 373 Op = Op->Asl.Child; 374 } 375 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 376 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) 377 { 378 Op = Op->Asl.Next; 379 } 380 Op = Op->Asl.Child; 381 382 if (Op && (Op->Asl.ParseOpcode == PARSEOP_INTEGER)) 383 { 384 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 385 " [Initial Length 0x%.2X bytes]", 386 Op->Asl.Value.Integer); 387 } 388 break; 389 390 391 case ACPI_TYPE_METHOD: 392 393 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 394 " [Code Length 0x%.4X bytes]", 395 Op->Asl.AmlSubtreeLength); 396 break; 397 398 399 case ACPI_TYPE_LOCAL_RESOURCE: 400 401 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 402 " [Desc Offset 0x%.4X Bytes]", Node->Value); 403 break; 404 405 406 case ACPI_TYPE_LOCAL_RESOURCE_FIELD: 407 408 if (Node->Flags & 0x80) 409 { 410 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 411 " [Field Offset 0x%.4X Bits 0x%.4X Bytes]", 412 Node->Value, Node->Value / 8); 413 } 414 else 415 { 416 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, 417 " [Field Offset 0x%.4X Bytes]", Node->Value); 418 } 419 break; 420 421 422 default: 423 /* Nothing to do for other types */ 424 break; 425 } 426 } 427 428 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\n"); 429 return (AE_OK); 430} 431 432 433/******************************************************************************* 434 * 435 * FUNCTION: LsSetupNsList 436 * 437 * PARAMETERS: Handle - local file handle 438 * 439 * RETURN: None 440 * 441 * DESCRIPTION: Set the namespace output file to the input handle 442 * 443 ******************************************************************************/ 444 445void 446LsSetupNsList ( 447 void *Handle) 448{ 449 450 Gbl_NsOutputFlag = TRUE; 451 Gbl_Files[ASL_FILE_NAMESPACE_OUTPUT].Handle = Handle; 452} 453 454 455/******************************************************************************* 456 * 457 * FUNCTION: LsDoOnePathname 458 * 459 * PARAMETERS: ACPI_WALK_CALLBACK 460 * 461 * RETURN: Status 462 * 463 * DESCRIPTION: Print the full pathname for a namespace node. 464 * 465 ******************************************************************************/ 466 467static ACPI_STATUS 468LsDoOnePathname ( 469 ACPI_HANDLE ObjHandle, 470 UINT32 Level, 471 void *Context, 472 void **ReturnValue) 473{ 474 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 475 ACPI_STATUS Status; 476 ACPI_BUFFER TargetPath; 477 478 479 TargetPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 480 Status = AcpiNsHandleToPathname (Node, &TargetPath); 481 if (ACPI_FAILURE (Status)) 482 { 483 return (Status); 484 } 485 486 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "%s\n", TargetPath.Pointer); 487 ACPI_FREE (TargetPath.Pointer); 488 489 return (AE_OK); 490} 491 492 493/******************************************************************************* 494 * 495 * FUNCTION: LsDisplayNamespace 496 * 497 * PARAMETERS: None 498 * 499 * RETURN: Status 500 * 501 * DESCRIPTION: Walk the namespace an display information about each node 502 * in the tree. Information is written to the optional 503 * namespace output file. 504 * 505 ******************************************************************************/ 506 507ACPI_STATUS 508LsDisplayNamespace ( 509 void) 510{ 511 ACPI_STATUS Status; 512 513 514 if (!Gbl_NsOutputFlag) 515 { 516 return (AE_OK); 517 } 518 519 Gbl_NumNamespaceObjects = 0; 520 521 /* File header */ 522 523 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "Contents of ACPI Namespace\n\n"); 524 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "Count Depth Name - Type\n\n"); 525 526 /* Walk entire namespace from the root */ 527 528 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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529 ACPI_UINT32_MAX, FALSE, LsDoOneNamespaceObject,
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529 ACPI_UINT32_MAX, FALSE, LsDoOneNamespaceObject, NULL, |
530 NULL, NULL); 531 532 /* Print the full pathname for each namespace node */ 533 534 FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\nNamespace pathnames\n\n"); 535 536 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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537 ACPI_UINT32_MAX, FALSE, LsDoOnePathname,
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537 ACPI_UINT32_MAX, FALSE, LsDoOnePathname, NULL, |
538 NULL, NULL); 539 540 return (Status); 541} 542 543 544/******************************************************************************* 545 * 546 * FUNCTION: LsCompareOneNamespaceObject 547 * 548 * PARAMETERS: ACPI_WALK_CALLBACK 549 * 550 * RETURN: Status 551 * 552 * DESCRIPTION: Compare name of one object. 553 * 554 ******************************************************************************/ 555 556static ACPI_STATUS 557LsCompareOneNamespaceObject ( 558 ACPI_HANDLE ObjHandle, 559 UINT32 Level, 560 void *Context, 561 void **ReturnValue) 562{ 563 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 564 565 566 /* Simply check the name */ 567 568 if (*((UINT32 *) (Context)) == Node->Name.Integer) 569 { 570 /* Abort walk if we found one instance */ 571 572 return (AE_CTRL_TRUE); 573 } 574 575 return (AE_OK); 576} 577 578 579/******************************************************************************* 580 * 581 * FUNCTION: LkObjectExists 582 * 583 * PARAMETERS: Name - 4 char ACPI name 584 * 585 * RETURN: TRUE if name exists in namespace 586 * 587 * DESCRIPTION: Walk the namespace to find an object 588 * 589 ******************************************************************************/ 590 591static BOOLEAN 592LkObjectExists ( 593 char *Name) 594{ 595 ACPI_STATUS Status; 596 597 598 /* Walk entire namespace from the supplied root */ 599 600 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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601 ACPI_UINT32_MAX, FALSE, LsCompareOneNamespaceObject,
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601 ACPI_UINT32_MAX, FALSE, LsCompareOneNamespaceObject, NULL, |
602 Name, NULL); 603 if (Status == AE_CTRL_TRUE) 604 { 605 /* At least one instance of the name was found */ 606 607 return (TRUE); 608 } 609 610 return (FALSE); 611} 612 613 614/******************************************************************************* 615 * 616 * FUNCTION: LkGetNameOp 617 * 618 * PARAMETERS: Op - Current Op 619 * 620 * RETURN: NameOp associated with the input op 621 * 622 * DESCRIPTION: Find the name declaration op associated with the operator 623 * 624 ******************************************************************************/ 625 626ACPI_PARSE_OBJECT * 627LkGetNameOp ( 628 ACPI_PARSE_OBJECT *Op) 629{ 630 const ACPI_OPCODE_INFO *OpInfo; 631 ACPI_PARSE_OBJECT *NameOp = Op; 632 633 634 OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); 635 636 637 /* Get the NamePath from the appropriate place */ 638 639 if (OpInfo->Flags & AML_NAMED) 640 { 641 /* For nearly all NAMED operators, the name reference is the first child */ 642 643 NameOp = Op->Asl.Child; 644 if (Op->Asl.AmlOpcode == AML_ALIAS_OP) 645 { 646 /* 647 * ALIAS is the only oddball opcode, the name declaration 648 * (alias name) is the second operand 649 */ 650 NameOp = Op->Asl.Child->Asl.Next; 651 } 652 } 653 else if (OpInfo->Flags & AML_CREATE) 654 { 655 /* Name must appear as the last parameter */ 656 657 NameOp = Op->Asl.Child; 658 while (!(NameOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)) 659 { 660 NameOp = NameOp->Asl.Next; 661 } 662 } 663 664 return (NameOp); 665} 666 667 668/******************************************************************************* 669 * 670 * FUNCTION: LkIsObjectUsed 671 * 672 * PARAMETERS: ACPI_WALK_CALLBACK 673 * 674 * RETURN: Status 675 * 676 * DESCRIPTION: Check for an unreferenced namespace object and emit a warning. 677 * We have to be careful, because some types and names are 678 * typically or always unreferenced, we don't want to issue 679 * excessive warnings. 680 * 681 ******************************************************************************/ 682 683static ACPI_STATUS 684LkIsObjectUsed ( 685 ACPI_HANDLE ObjHandle, 686 UINT32 Level, 687 void *Context, 688 void **ReturnValue) 689{ 690 ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); 691 692 693 /* Referenced flag is set during the namespace xref */ 694 695 if (Node->Flags & ANOBJ_IS_REFERENCED) 696 { 697 return (AE_OK); 698 } 699 700 /* 701 * Ignore names that start with an underscore, 702 * these are the reserved ACPI names and are typically not referenced, 703 * they are called by the host OS. 704 */ 705 if (Node->Name.Ascii[0] == '_') 706 { 707 return (AE_OK); 708 } 709 710 /* There are some types that are typically not referenced, ignore them */ 711 712 switch (Node->Type) 713 { 714 case ACPI_TYPE_DEVICE: 715 case ACPI_TYPE_PROCESSOR: 716 case ACPI_TYPE_POWER: 717 case ACPI_TYPE_LOCAL_RESOURCE: 718 return (AE_OK); 719 720 default: 721 break; 722 } 723 724 /* All others are valid unreferenced namespace objects */ 725 726 if (Node->Op) 727 { 728 AslError (ASL_WARNING2, ASL_MSG_NOT_REFERENCED, LkGetNameOp (Node->Op), NULL); 729 } 730 return (AE_OK); 731} 732 733 734/******************************************************************************* 735 * 736 * FUNCTION: LkFindUnreferencedObjects 737 * 738 * PARAMETERS: None 739 * 740 * RETURN: None 741 * 742 * DESCRIPTION: Namespace walk to find objects that are not referenced in any 743 * way. Must be called after the namespace has been cross 744 * referenced. 745 * 746 ******************************************************************************/ 747 748void 749LkFindUnreferencedObjects ( 750 void) 751{ 752 753 /* Walk entire namespace from the supplied root */ 754 755 (void) AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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756 ACPI_UINT32_MAX, FALSE, LkIsObjectUsed,
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756 ACPI_UINT32_MAX, FALSE, LkIsObjectUsed, NULL, |
757 NULL, NULL); 758} 759 760 761/******************************************************************************* 762 * 763 * FUNCTION: LkCrossReferenceNamespace 764 * 765 * PARAMETERS: None 766 * 767 * RETURN: Status 768 * 769 * DESCRIPTION: Perform a cross reference check of the parse tree against the 770 * namespace. Every named referenced within the parse tree 771 * should be get resolved with a namespace lookup. If not, the 772 * original reference in the ASL code is invalid -- i.e., refers 773 * to a non-existent object. 774 * 775 * NOTE: The ASL "External" operator causes the name to be inserted into the 776 * namespace so that references to the external name will be resolved 777 * correctly here. 778 * 779 ******************************************************************************/ 780 781ACPI_STATUS 782LkCrossReferenceNamespace ( 783 void) 784{ 785 ACPI_WALK_STATE *WalkState; 786 787 788 DbgPrint (ASL_DEBUG_OUTPUT, "\nCross referencing namespace\n\n"); 789 790 /* 791 * Create a new walk state for use when looking up names 792 * within the namespace (Passed as context to the callbacks) 793 */ 794 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 795 if (!WalkState) 796 { 797 return AE_NO_MEMORY; 798 } 799 800 /* Walk the entire parse tree */ 801 802 TrWalkParseTree (RootNode, ASL_WALK_VISIT_TWICE, LkNamespaceLocateBegin, 803 LkNamespaceLocateEnd, WalkState); 804 return AE_OK; 805} 806 807 808/******************************************************************************* 809 * 810 * FUNCTION: LkCheckFieldRange 811 * 812 * PARAMETERS: RegionBitLength - Length of entire parent region 813 * FieldBitOffset - Start of the field unit (within region) 814 * FieldBitLength - Entire length of field unit 815 * AccessBitWidth - Access width of the field unit 816 * 817 * RETURN: None 818 * 819 * DESCRIPTION: Check one field unit to make sure it fits in the parent 820 * op region. 821 * 822 * Note: AccessBitWidth must be either 8,16,32, or 64 823 * 824 ******************************************************************************/ 825 826static void 827LkCheckFieldRange ( 828 ACPI_PARSE_OBJECT *Op, 829 UINT32 RegionBitLength, 830 UINT32 FieldBitOffset, 831 UINT32 FieldBitLength, 832 UINT32 AccessBitWidth) 833{ 834 UINT32 FieldEndBitOffset; 835 836 837 /* 838 * Check each field unit against the region size. The entire 839 * field unit (start offset plus length) must fit within the 840 * region. 841 */ 842 FieldEndBitOffset = FieldBitOffset + FieldBitLength; 843 844 if (FieldEndBitOffset > RegionBitLength) 845 { 846 /* Field definition itself is beyond the end-of-region */ 847 848 AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_OFFSET, Op, NULL); 849 return; 850 } 851 852 /* 853 * Now check that the field plus AccessWidth doesn't go beyond 854 * the end-of-region. Assumes AccessBitWidth is a power of 2 855 */ 856 FieldEndBitOffset = ACPI_ROUND_UP (FieldEndBitOffset, AccessBitWidth); 857 858 if (FieldEndBitOffset > RegionBitLength) 859 { 860 /* Field definition combined with the access is beyond EOR */ 861 862 AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_ACCESS_WIDTH, Op, NULL); 863 } 864} 865 866/******************************************************************************* 867 * 868 * FUNCTION: LkNamespaceLocateBegin 869 * 870 * PARAMETERS: ASL_WALK_CALLBACK 871 * 872 * RETURN: Status 873 * 874 * DESCRIPTION: Descending callback used during cross-reference. For named 875 * object references, attempt to locate the name in the 876 * namespace. 877 * 878 * NOTE: ASL references to named fields within resource descriptors are 879 * resolved to integer values here. Therefore, this step is an 880 * important part of the code generation. We don't know that the 881 * name refers to a resource descriptor until now. 882 * 883 ******************************************************************************/ 884 885static ACPI_STATUS 886LkNamespaceLocateBegin ( 887 ACPI_PARSE_OBJECT *Op, 888 UINT32 Level, 889 void *Context) 890{ 891 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; 892 ACPI_NAMESPACE_NODE *Node; 893 ACPI_STATUS Status; 894 ACPI_OBJECT_TYPE ObjectType; 895 char *Path; 896 UINT8 PassedArgs; 897 ACPI_PARSE_OBJECT *NextOp; 898 ACPI_PARSE_OBJECT *OwningOp; 899 ACPI_PARSE_OBJECT *SpaceIdOp; 900 UINT32 MinimumLength; 901 UINT32 Temp; 902 const ACPI_OPCODE_INFO *OpInfo; 903 UINT32 Flags; 904 905 906 ACPI_FUNCTION_TRACE_PTR (LkNamespaceLocateBegin, Op); 907 908 /* 909 * If this node is the actual declaration of a name 910 * [such as the XXXX name in "Method (XXXX)"], 911 * we are not interested in it here. We only care about names that are 912 * references to other objects within the namespace and the parent objects 913 * of name declarations 914 */ 915 if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION) 916 { 917 return (AE_OK); 918 } 919 920 /* We are only interested in opcodes that have an associated name */ 921 922 OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); 923 924 if ((!(OpInfo->Flags & AML_NAMED)) && 925 (!(OpInfo->Flags & AML_CREATE)) && 926 (Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) && 927 (Op->Asl.ParseOpcode != PARSEOP_NAMESEG) && 928 (Op->Asl.ParseOpcode != PARSEOP_METHODCALL)) 929 { 930 return (AE_OK); 931 } 932 933 /* 934 * One special case: CondRefOf operator - we don't care if the name exists 935 * or not at this point, just ignore it, the point of the operator is to 936 * determine if the name exists at runtime. 937 */ 938 if ((Op->Asl.Parent) && 939 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF)) 940 { 941 return (AE_OK); 942 } 943 944 /* 945 * We must enable the "search-to-root" for single NameSegs, but 946 * we have to be very careful about opening up scopes 947 */ 948 Flags = ACPI_NS_SEARCH_PARENT; 949 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || 950 (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 951 (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) 952 { 953 /* 954 * These are name references, do not push the scope stack 955 * for them. 956 */ 957 Flags |= ACPI_NS_DONT_OPEN_SCOPE; 958 } 959 960 /* Get the NamePath from the appropriate place */ 961 962 if (OpInfo->Flags & AML_NAMED) 963 { 964 /* For nearly all NAMED operators, the name reference is the first child */ 965 966 Path = Op->Asl.Child->Asl.Value.String; 967 if (Op->Asl.AmlOpcode == AML_ALIAS_OP) 968 { 969 /* 970 * ALIAS is the only oddball opcode, the name declaration 971 * (alias name) is the second operand 972 */ 973 Path = Op->Asl.Child->Asl.Next->Asl.Value.String; 974 } 975 } 976 else if (OpInfo->Flags & AML_CREATE) 977 { 978 /* Name must appear as the last parameter */ 979 980 NextOp = Op->Asl.Child; 981 while (!(NextOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)) 982 { 983 NextOp = NextOp->Asl.Next; 984 } 985 Path = NextOp->Asl.Value.String; 986 } 987 else 988 { 989 Path = Op->Asl.Value.String; 990 } 991 992 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 993 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 994 "Type=%s\n", AcpiUtGetTypeName (ObjectType))); 995 996 /* 997 * Lookup the name in the namespace. Name must exist at this point, or it 998 * is an invalid reference. 999 * 1000 * The namespace is also used as a lookup table for references to resource 1001 * descriptors and the fields within them. 1002 */ 1003 Gbl_NsLookupCount++; 1004 1005 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 1006 ACPI_IMODE_EXECUTE, Flags, WalkState, &(Node)); 1007 if (ACPI_FAILURE (Status)) 1008 { 1009 if (Status == AE_NOT_FOUND) 1010 { 1011 /* 1012 * We didn't find the name reference by path -- we can qualify this 1013 * a little better before we print an error message 1014 */ 1015 if (strlen (Path) == ACPI_NAME_SIZE) 1016 { 1017 /* A simple, one-segment ACPI name */ 1018 1019 if (LkObjectExists (Path)) 1020 { 1021 /* 1022 * There exists such a name, but we couldn't get to it 1023 * from this scope 1024 */ 1025 AslError (ASL_ERROR, ASL_MSG_NOT_REACHABLE, Op, 1026 Op->Asl.ExternalName); 1027 } 1028 else 1029 { 1030 /* The name doesn't exist, period */ 1031 1032 AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, 1033 Op, Op->Asl.ExternalName); 1034 } 1035 } 1036 else 1037 { 1038 /* Check for a fully qualified path */ 1039 1040 if (Path[0] == AML_ROOT_PREFIX) 1041 { 1042 /* Gave full path, the object does not exist */ 1043 1044 AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, Op, 1045 Op->Asl.ExternalName); 1046 } 1047 else 1048 { 1049 /* 1050 * We can't tell whether it doesn't exist or just 1051 * can't be reached. 1052 */ 1053 AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, 1054 Op->Asl.ExternalName); 1055 } 1056 } 1057 1058 Status = AE_OK; 1059 } 1060 return (Status); 1061 } 1062 1063 /* Check for a reference vs. name declaration */ 1064 1065 if (!(OpInfo->Flags & AML_NAMED) && 1066 !(OpInfo->Flags & AML_CREATE)) 1067 { 1068 /* This node has been referenced, mark it for reference check */ 1069 1070 Node->Flags |= ANOBJ_IS_REFERENCED; 1071 } 1072 1073 /* Attempt to optimize the NamePath */ 1074 1075 OptOptimizeNamePath (Op, OpInfo->Flags, WalkState, Path, Node); 1076 1077 /* 1078 * 1) Dereference an alias (A name reference that is an alias) 1079 * Aliases are not nested, the alias always points to the final object 1080 */ 1081 if ((Op->Asl.ParseOpcode != PARSEOP_ALIAS) && 1082 (Node->Type == ACPI_TYPE_LOCAL_ALIAS)) 1083 { 1084 /* This node points back to the original PARSEOP_ALIAS */ 1085 1086 NextOp = Node->Op; 1087 1088 /* The first child is the alias target op */ 1089 1090 NextOp = NextOp->Asl.Child; 1091 1092 /* That in turn points back to original target alias node */ 1093 1094 if (NextOp->Asl.Node) 1095 { 1096 Node = NextOp->Asl.Node; 1097 } 1098 1099 /* Else - forward reference to alias, will be resolved later */ 1100 } 1101 1102 /* 2) Check for a reference to a resource descriptor */ 1103 1104 if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) || 1105 (Node->Type == ACPI_TYPE_LOCAL_RESOURCE)) 1106 { 1107 /* 1108 * This was a reference to a field within a resource descriptor. Extract 1109 * the associated field offset (either a bit or byte offset depending on 1110 * the field type) and change the named reference into an integer for 1111 * AML code generation 1112 */ 1113 Temp = Node->Value; 1114 if (Node->Flags & ANOBJ_IS_BIT_OFFSET) 1115 { 1116 Op->Asl.CompileFlags |= NODE_IS_BIT_OFFSET; 1117 } 1118 1119 /* Perform BitOffset <--> ByteOffset conversion if necessary */ 1120 1121 switch (Op->Asl.Parent->Asl.AmlOpcode) 1122 { 1123 case AML_CREATE_FIELD_OP: 1124 1125 /* We allow a Byte offset to Bit Offset conversion for this op */ 1126 1127 if (!(Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET)) 1128 { 1129 /* Simply multiply byte offset times 8 to get bit offset */ 1130 1131 Temp = ACPI_MUL_8 (Temp); 1132 } 1133 break; 1134 1135 1136 case AML_CREATE_BIT_FIELD_OP: 1137 1138 /* This op requires a Bit Offset */ 1139 1140 if (!(Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET)) 1141 { 1142 AslError (ASL_ERROR, ASL_MSG_BYTES_TO_BITS, Op, NULL); 1143 } 1144 break; 1145 1146 1147 case AML_CREATE_BYTE_FIELD_OP: 1148 case AML_CREATE_WORD_FIELD_OP: 1149 case AML_CREATE_DWORD_FIELD_OP: 1150 case AML_CREATE_QWORD_FIELD_OP: 1151 case AML_INDEX_OP: 1152 1153 /* These Ops require Byte offsets */ 1154 1155 if (Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET) 1156 { 1157 AslError (ASL_ERROR, ASL_MSG_BITS_TO_BYTES, Op, NULL); 1158 } 1159 break; 1160 1161 1162 default: 1163 /* Nothing to do for other opcodes */ 1164 break; 1165 } 1166 1167 /* Now convert this node to an integer whose value is the field offset */ 1168 1169 Op->Asl.AmlLength = 0; 1170 Op->Asl.ParseOpcode = PARSEOP_INTEGER; 1171 Op->Asl.Value.Integer = (UINT64) Temp; 1172 Op->Asl.CompileFlags |= NODE_IS_RESOURCE_FIELD; 1173 1174 OpcGenerateAmlOpcode (Op); 1175 } 1176 1177 /* 3) Check for a method invocation */ 1178 1179 else if ((((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG)) && 1180 (Node->Type == ACPI_TYPE_METHOD) && 1181 (Op->Asl.Parent) && 1182 (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_METHOD)) || 1183 1184 (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) 1185 { 1186 1187 /* 1188 * A reference to a method within one of these opcodes is not an 1189 * invocation of the method, it is simply a reference to the method. 1190 */ 1191 if ((Op->Asl.Parent) && 1192 ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_REFOF) || 1193 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEREFOF) || 1194 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_OBJECTTYPE))) 1195 { 1196 return (AE_OK); 1197 } 1198 /* 1199 * There are two types of method invocation: 1200 * 1) Invocation with arguments -- the parser recognizes this 1201 * as a METHODCALL. 1202 * 2) Invocation with no arguments --the parser cannot determine that 1203 * this is a method invocation, therefore we have to figure it out 1204 * here. 1205 */ 1206 if (Node->Type != ACPI_TYPE_METHOD) 1207 { 1208 sprintf (MsgBuffer, "%s is a %s", 1209 Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); 1210 1211 AslError (ASL_ERROR, ASL_MSG_NOT_METHOD, Op, MsgBuffer); 1212 return (AE_OK); 1213 } 1214 1215 /* Save the method node in the caller's op */ 1216 1217 Op->Asl.Node = Node; 1218 if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF) 1219 { 1220 return (AE_OK); 1221 } 1222 1223 /* 1224 * This is a method invocation, with or without arguments. 1225 * Count the number of arguments, each appears as a child 1226 * under the parent node 1227 */ 1228 Op->Asl.ParseOpcode = PARSEOP_METHODCALL; 1229 UtSetParseOpName (Op); 1230 1231 PassedArgs = 0; 1232 NextOp = Op->Asl.Child; 1233 1234 while (NextOp) 1235 { 1236 PassedArgs++; 1237 NextOp = NextOp->Asl.Next; 1238 } 1239 1240 if (Node->Value != ASL_EXTERNAL_METHOD) 1241 { 1242 /* 1243 * Check the parsed arguments with the number expected by the 1244 * method declaration itself 1245 */ 1246 if (PassedArgs != Node->Value) 1247 { 1248 sprintf (MsgBuffer, "%s requires %d", Op->Asl.ExternalName, 1249 Node->Value); 1250 1251 if (PassedArgs < Node->Value) 1252 { 1253 AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_LO, Op, MsgBuffer); 1254 } 1255 else 1256 { 1257 AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_HI, Op, MsgBuffer); 1258 } 1259 } 1260 } 1261 } 1262 1263 /* 4) Check for an ASL Field definition */ 1264 1265 else if ((Op->Asl.Parent) && 1266 ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_FIELD) || 1267 (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_BANKFIELD))) 1268 { 1269 /* 1270 * Offset checking for fields. If the parent operation region has a 1271 * constant length (known at compile time), we can check fields 1272 * defined in that region against the region length. This will catch 1273 * fields and field units that cannot possibly fit within the region. 1274 * 1275 * Note: Index fields do not directly reference an operation region, 1276 * thus they are not included in this check. 1277 */ 1278 if (Op == Op->Asl.Parent->Asl.Child) 1279 { 1280 /* 1281 * This is the first child of the field node, which is 1282 * the name of the region. Get the parse node for the 1283 * region -- which contains the length of the region. 1284 */ 1285 OwningOp = Node->Op; 1286 Op->Asl.Parent->Asl.ExtraValue = 1287 ACPI_MUL_8 ((UINT32) OwningOp->Asl.Value.Integer); 1288 1289 /* Examine the field access width */ 1290 1291 switch ((UINT8) Op->Asl.Parent->Asl.Value.Integer) 1292 { 1293 case AML_FIELD_ACCESS_ANY: 1294 case AML_FIELD_ACCESS_BYTE: 1295 case AML_FIELD_ACCESS_BUFFER: 1296 default: 1297 MinimumLength = 1; 1298 break; 1299 1300 case AML_FIELD_ACCESS_WORD: 1301 MinimumLength = 2; 1302 break; 1303 1304 case AML_FIELD_ACCESS_DWORD: 1305 MinimumLength = 4; 1306 break; 1307 1308 case AML_FIELD_ACCESS_QWORD: 1309 MinimumLength = 8; 1310 break; 1311 } 1312 1313 /* 1314 * Is the region at least as big as the access width? 1315 * Note: DataTableRegions have 0 length 1316 */ 1317 if (((UINT32) OwningOp->Asl.Value.Integer) && 1318 ((UINT32) OwningOp->Asl.Value.Integer < MinimumLength)) 1319 { 1320 AslError (ASL_ERROR, ASL_MSG_FIELD_ACCESS_WIDTH, Op, NULL); 1321 } 1322 1323 /* 1324 * Check EC/CMOS/SMBUS fields to make sure that the correct 1325 * access type is used (BYTE for EC/CMOS, BUFFER for SMBUS) 1326 */ 1327 SpaceIdOp = OwningOp->Asl.Child->Asl.Next; 1328 switch ((UINT32) SpaceIdOp->Asl.Value.Integer) 1329 { 1330 case REGION_EC: 1331 case REGION_CMOS: 1332 1333 if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BYTE) 1334 { 1335 AslError (ASL_ERROR, ASL_MSG_REGION_BYTE_ACCESS, Op, NULL); 1336 } 1337 break; 1338 1339 case REGION_SMBUS: 1340 case REGION_IPMI: 1341 1342 if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BUFFER) 1343 { 1344 AslError (ASL_ERROR, ASL_MSG_REGION_BUFFER_ACCESS, Op, NULL); 1345 } 1346 break; 1347 1348 default: 1349 1350 /* Nothing to do for other address spaces */ 1351 break; 1352 } 1353 } 1354 else 1355 { 1356 /* 1357 * This is one element of the field list. Check to make sure 1358 * that it does not go beyond the end of the parent operation region. 1359 * 1360 * In the code below: 1361 * Op->Asl.Parent->Asl.ExtraValue - Region Length (bits) 1362 * Op->Asl.ExtraValue - Field start offset (bits) 1363 * Op->Asl.Child->Asl.Value.Integer32 - Field length (bits) 1364 * Op->Asl.Child->Asl.ExtraValue - Field access width (bits) 1365 */ 1366 if (Op->Asl.Parent->Asl.ExtraValue && Op->Asl.Child) 1367 { 1368 LkCheckFieldRange (Op, 1369 Op->Asl.Parent->Asl.ExtraValue, 1370 Op->Asl.ExtraValue, 1371 (UINT32) Op->Asl.Child->Asl.Value.Integer, 1372 Op->Asl.Child->Asl.ExtraValue); 1373 } 1374 } 1375 } 1376 1377 Op->Asl.Node = Node; 1378 return (Status); 1379} 1380 1381 1382/******************************************************************************* 1383 * 1384 * FUNCTION: LkNamespaceLocateEnd 1385 * 1386 * PARAMETERS: ASL_WALK_CALLBACK 1387 * 1388 * RETURN: Status 1389 * 1390 * DESCRIPTION: Ascending callback used during cross reference. We only 1391 * need to worry about scope management here. 1392 * 1393 ******************************************************************************/ 1394 1395static ACPI_STATUS 1396LkNamespaceLocateEnd ( 1397 ACPI_PARSE_OBJECT *Op, 1398 UINT32 Level, 1399 void *Context) 1400{ 1401 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; 1402 const ACPI_OPCODE_INFO *OpInfo; 1403 1404 1405 ACPI_FUNCTION_TRACE (LkNamespaceLocateEnd); 1406 1407 1408 /* We are only interested in opcodes that have an associated name */ 1409 1410 OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); 1411 if (!(OpInfo->Flags & AML_NAMED)) 1412 { 1413 return (AE_OK); 1414 } 1415 1416 /* Not interested in name references, we did not open a scope for them */ 1417 1418 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || 1419 (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 1420 (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) 1421 { 1422 return (AE_OK); 1423 } 1424 1425 /* Pop the scope stack if necessary */ 1426 1427 if (AcpiNsOpensScope (AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode))) 1428 { 1429 1430 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1431 "%s: Popping scope for Op %p\n", 1432 AcpiUtGetTypeName (OpInfo->ObjectType), Op)); 1433 1434 (void) AcpiDsScopeStackPop (WalkState); 1435 } 1436 1437 return (AE_OK); 1438} 1439 1440
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