14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118#define __NSUTILS_C__ 119 120#include "acpi.h" 121#include "acnamesp.h" 122#include "amlcode.h" 123#include "actables.h" 124 125#define _COMPONENT ACPI_NAMESPACE 126 ACPI_MODULE_NAME ("nsutils") 127 128 129/******************************************************************************* 130 * 131 * FUNCTION: AcpiNsReportError 132 * 133 * PARAMETERS: ModuleName - Caller's module name (for error output) 134 * LineNumber - Caller's line number (for error output) 135 * ComponentId - Caller's component ID (for error output) 136 * Message - Error message to use on failure 137 * 138 * RETURN: None 139 * 140 * DESCRIPTION: Print warning message with full pathname 141 * 142 ******************************************************************************/ 143 144void 145AcpiNsReportError ( 146 char *ModuleName, 147 UINT32 LineNumber, 148 UINT32 ComponentId, 149 char *InternalName, 150 ACPI_STATUS LookupStatus) 151{ 152 ACPI_STATUS Status; 153 char *Name = NULL; 154 155 156 AcpiOsPrintf ("%8s-%04d: *** Error: Looking up ", 157 ModuleName, LineNumber); 158 159 if (LookupStatus == AE_BAD_CHARACTER) 160 { 161 /* There is a non-ascii character in the name */ 162 163 AcpiOsPrintf ("[0x%4.4X] (NON-ASCII)\n", *(ACPI_CAST_PTR (UINT32, InternalName))); 164 } 165 else 166 { 167 /* Convert path to external format */ 168 169 Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, InternalName, NULL, &Name); 170 171 /* Print target name */ 172 173 if (ACPI_SUCCESS (Status)) 174 { 175 AcpiOsPrintf ("[%s]", Name); 176 } 177 else 178 { 179 AcpiOsPrintf ("[COULD NOT EXTERNALIZE NAME]"); 180 } 181 182 if (Name) 183 { 184 ACPI_MEM_FREE (Name); 185 } 186 } 187 188 AcpiOsPrintf (" in namespace, %s\n", 189 AcpiFormatException (LookupStatus)); 190} 191 192 193/******************************************************************************* 194 * 195 * FUNCTION: AcpiNsReportMethodError 196 * 197 * PARAMETERS: ModuleName - Caller's module name (for error output) 198 * LineNumber - Caller's line number (for error output) 199 * ComponentId - Caller's component ID (for error output) 200 * Message - Error message to use on failure 201 * 202 * RETURN: None 203 * 204 * DESCRIPTION: Print warning message with full pathname 205 * 206 ******************************************************************************/ 207 208void 209AcpiNsReportMethodError ( 210 char *ModuleName, 211 UINT32 LineNumber, 212 UINT32 ComponentId, 213 char *Message, 214 ACPI_NAMESPACE_NODE *PrefixNode, 215 char *Path, 216 ACPI_STATUS MethodStatus) 217{ 218 ACPI_STATUS Status; 219 ACPI_NAMESPACE_NODE *Node = PrefixNode; 220 221 222 if (Path) 223 { 224 Status = AcpiNsGetNodeByPath (Path, PrefixNode, ACPI_NS_NO_UPSEARCH, &Node); 225 if (ACPI_FAILURE (Status)) 226 { 227 AcpiOsPrintf ("ReportMethodError: Could not get node\n"); 228 return; 229 } 230 } 231 232 AcpiOsPrintf ("%8s-%04d: *** Error: ", ModuleName, LineNumber); 233 AcpiNsPrintNodePathname (Node, Message); 234 AcpiOsPrintf (", %s\n", AcpiFormatException (MethodStatus)); 235} 236 237 238/******************************************************************************* 239 * 240 * FUNCTION: AcpiNsPrintNodePathname 241 * 242 * PARAMETERS: Node - Object 243 * Msg - Prefix message 244 * 245 * DESCRIPTION: Print an object's full namespace pathname 246 * Manages allocation/freeing of a pathname buffer 247 * 248 ******************************************************************************/ 249 250void 251AcpiNsPrintNodePathname ( 252 ACPI_NAMESPACE_NODE *Node, 253 char *Msg) 254{ 255 ACPI_BUFFER Buffer; 256 ACPI_STATUS Status; 257 258 259 if (!Node) 260 { 261 AcpiOsPrintf ("[NULL NAME]"); 262 return; 263 } 264 265 /* Convert handle to a full pathname and print it (with supplied message) */ 266 267 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 268 269 Status = AcpiNsHandleToPathname (Node, &Buffer); 270 if (ACPI_SUCCESS (Status)) 271 { 272 if (Msg) 273 { 274 AcpiOsPrintf ("%s ", Msg); 275 } 276 277 AcpiOsPrintf ("[%s] (Node %p)", (char *) Buffer.Pointer, Node); 278 ACPI_MEM_FREE (Buffer.Pointer); 279 } 280} 281 282 283/******************************************************************************* 284 * 285 * FUNCTION: AcpiNsValidRootPrefix 286 * 287 * PARAMETERS: Prefix - Character to be checked 288 * 289 * RETURN: TRUE if a valid prefix 290 * 291 * DESCRIPTION: Check if a character is a valid ACPI Root prefix 292 * 293 ******************************************************************************/ 294 295BOOLEAN 296AcpiNsValidRootPrefix ( 297 char Prefix) 298{ 299 300 return ((BOOLEAN) (Prefix == '\\')); 301} 302 303 304/******************************************************************************* 305 * 306 * FUNCTION: AcpiNsValidPathSeparator 307 * 308 * PARAMETERS: Sep - Character to be checked 309 * 310 * RETURN: TRUE if a valid path separator 311 * 312 * DESCRIPTION: Check if a character is a valid ACPI path separator 313 * 314 ******************************************************************************/ 315 316BOOLEAN 317AcpiNsValidPathSeparator ( 318 char Sep) 319{ 320 321 return ((BOOLEAN) (Sep == '.')); 322} 323 324 325/******************************************************************************* 326 * 327 * FUNCTION: AcpiNsGetType 328 * 329 * PARAMETERS: Handle - Parent Node to be examined 330 * 331 * RETURN: Type field from Node whose handle is passed 332 * 333 ******************************************************************************/ 334 335ACPI_OBJECT_TYPE 336AcpiNsGetType ( 337 ACPI_NAMESPACE_NODE *Node) 338{ 339 ACPI_FUNCTION_TRACE ("NsGetType"); 340 341 342 if (!Node) 343 { 344 ACPI_REPORT_WARNING (("NsGetType: Null Node ptr")); 345 return_VALUE (ACPI_TYPE_ANY); 346 } 347 348 return_VALUE ((ACPI_OBJECT_TYPE) Node->Type); 349} 350 351 352/******************************************************************************* 353 * 354 * FUNCTION: AcpiNsLocal 355 * 356 * PARAMETERS: Type - A namespace object type 357 * 358 * RETURN: LOCAL if names must be found locally in objects of the 359 * passed type, 0 if enclosing scopes should be searched 360 * 361 ******************************************************************************/ 362 363UINT32 364AcpiNsLocal ( 365 ACPI_OBJECT_TYPE Type) 366{ 367 ACPI_FUNCTION_TRACE ("NsLocal"); 368 369 370 if (!AcpiUtValidObjectType (Type)) 371 { 372 /* Type code out of range */ 373 374 ACPI_REPORT_WARNING (("NsLocal: Invalid Object Type\n")); 375 return_VALUE (ACPI_NS_NORMAL); 376 } 377 378 return_VALUE ((UINT32) AcpiGbl_NsProperties[Type] & ACPI_NS_LOCAL); 379} 380 381 382/******************************************************************************* 383 * 384 * FUNCTION: AcpiNsGetInternalNameLength 385 * 386 * PARAMETERS: Info - Info struct initialized with the 387 * external name pointer. 388 * 389 * RETURN: Status 390 * 391 * DESCRIPTION: Calculate the length of the internal (AML) namestring 392 * corresponding to the external (ASL) namestring. 393 * 394 ******************************************************************************/ 395 396void 397AcpiNsGetInternalNameLength ( 398 ACPI_NAMESTRING_INFO *Info) 399{ 400 char *NextExternalChar; 401 UINT32 i; 402 403 404 ACPI_FUNCTION_ENTRY (); 405 406 407 NextExternalChar = Info->ExternalName; 408 Info->NumCarats = 0; 409 Info->NumSegments = 0; 410 Info->FullyQualified = FALSE; 411 412 /* 413 * For the internal name, the required length is 4 bytes 414 * per segment, plus 1 each for RootPrefix, MultiNamePrefixOp, 415 * segment count, trailing null (which is not really needed, 416 * but no there's harm in putting it there) 417 * 418 * strlen() + 1 covers the first NameSeg, which has no 419 * path separator 420 */ 421 if (AcpiNsValidRootPrefix (NextExternalChar[0])) 422 { 423 Info->FullyQualified = TRUE; 424 NextExternalChar++; 425 } 426 else 427 { 428 /* 429 * Handle Carat prefixes 430 */ 431 while (*NextExternalChar == '^') 432 { 433 Info->NumCarats++; 434 NextExternalChar++; 435 } 436 } 437 438 /* 439 * Determine the number of ACPI name "segments" by counting 440 * the number of path separators within the string. Start 441 * with one segment since the segment count is (# separators) 442 * + 1, and zero separators is ok. 443 */ 444 if (*NextExternalChar) 445 { 446 Info->NumSegments = 1; 447 for (i = 0; NextExternalChar[i]; i++) 448 { 449 if (AcpiNsValidPathSeparator (NextExternalChar[i])) 450 { 451 Info->NumSegments++; 452 } 453 } 454 } 455 456 Info->Length = (ACPI_NAME_SIZE * Info->NumSegments) + 457 4 + Info->NumCarats; 458 459 Info->NextExternalChar = NextExternalChar; 460} 461 462 463/******************************************************************************* 464 * 465 * FUNCTION: AcpiNsBuildInternalName 466 * 467 * PARAMETERS: Info - Info struct fully initialized 468 * 469 * RETURN: Status 470 * 471 * DESCRIPTION: Construct the internal (AML) namestring 472 * corresponding to the external (ASL) namestring. 473 * 474 ******************************************************************************/ 475 476ACPI_STATUS 477AcpiNsBuildInternalName ( 478 ACPI_NAMESTRING_INFO *Info) 479{ 480 UINT32 NumSegments = Info->NumSegments; 481 char *InternalName = Info->InternalName; 482 char *ExternalName = Info->NextExternalChar; 483 char *Result = NULL; 484 ACPI_NATIVE_UINT i; 485 486 487 ACPI_FUNCTION_TRACE ("NsBuildInternalName"); 488 489 490 /* Setup the correct prefixes, counts, and pointers */ 491 492 if (Info->FullyQualified) 493 { 494 InternalName[0] = '\\'; 495 496 if (NumSegments <= 1) 497 { 498 Result = &InternalName[1]; 499 } 500 else if (NumSegments == 2) 501 { 502 InternalName[1] = AML_DUAL_NAME_PREFIX; 503 Result = &InternalName[2]; 504 } 505 else 506 { 507 InternalName[1] = AML_MULTI_NAME_PREFIX_OP; 508 InternalName[2] = (char) NumSegments; 509 Result = &InternalName[3]; 510 } 511 } 512 else 513 { 514 /* 515 * Not fully qualified. 516 * Handle Carats first, then append the name segments 517 */ 518 i = 0; 519 if (Info->NumCarats) 520 { 521 for (i = 0; i < Info->NumCarats; i++) 522 { 523 InternalName[i] = '^'; 524 } 525 } 526 527 if (NumSegments <= 1) 528 { 529 Result = &InternalName[i]; 530 } 531 else if (NumSegments == 2) 532 { 533 InternalName[i] = AML_DUAL_NAME_PREFIX; 534 Result = &InternalName[(ACPI_NATIVE_UINT) (i+1)]; 535 } 536 else 537 { 538 InternalName[i] = AML_MULTI_NAME_PREFIX_OP; 539 InternalName[(ACPI_NATIVE_UINT) (i+1)] = (char) NumSegments; 540 Result = &InternalName[(ACPI_NATIVE_UINT) (i+2)]; 541 } 542 } 543 544 /* Build the name (minus path separators) */ 545 546 for (; NumSegments; NumSegments--) 547 { 548 for (i = 0; i < ACPI_NAME_SIZE; i++) 549 { 550 if (AcpiNsValidPathSeparator (*ExternalName) || 551 (*ExternalName == 0)) 552 { 553 /* Pad the segment with underscore(s) if segment is short */ 554 555 Result[i] = '_'; 556 } 557 else 558 { 559 /* Convert the character to uppercase and save it */ 560 561 Result[i] = (char) ACPI_TOUPPER ((int) *ExternalName); 562 ExternalName++; 563 } 564 } 565 566 /* Now we must have a path separator, or the pathname is bad */ 567 568 if (!AcpiNsValidPathSeparator (*ExternalName) && 569 (*ExternalName != 0)) 570 { 571 return_ACPI_STATUS (AE_BAD_PARAMETER); 572 } 573 574 /* Move on the next segment */ 575 576 ExternalName++; 577 Result += ACPI_NAME_SIZE; 578 } 579 580 /* Terminate the string */ 581 582 *Result = 0; 583 584 if (Info->FullyQualified) 585 { 586 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (abs) \"\\%s\"\n", 587 InternalName, InternalName)); 588 } 589 else 590 { 591 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n", 592 InternalName, InternalName)); 593 } 594 595 return_ACPI_STATUS (AE_OK); 596} 597 598 599/******************************************************************************* 600 * 601 * FUNCTION: AcpiNsInternalizeName 602 * 603 * PARAMETERS: *ExternalName - External representation of name 604 * **Converted Name - Where to return the resulting 605 * internal represention of the name 606 * 607 * RETURN: Status 608 * 609 * DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0") 610 * to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) 611 * 612 *******************************************************************************/ 613 614ACPI_STATUS 615AcpiNsInternalizeName ( 616 char *ExternalName, 617 char **ConvertedName) 618{ 619 char *InternalName; 620 ACPI_NAMESTRING_INFO Info; 621 ACPI_STATUS Status; 622 623 624 ACPI_FUNCTION_TRACE ("NsInternalizeName"); 625 626 627 if ((!ExternalName) || 628 (*ExternalName == 0) || 629 (!ConvertedName)) 630 { 631 return_ACPI_STATUS (AE_BAD_PARAMETER); 632 } 633 634 /* Get the length of the new internal name */ 635 636 Info.ExternalName = ExternalName; 637 AcpiNsGetInternalNameLength (&Info); 638 639 /* We need a segment to store the internal name */ 640 641 InternalName = ACPI_MEM_CALLOCATE (Info.Length); 642 if (!InternalName) 643 { 644 return_ACPI_STATUS (AE_NO_MEMORY); 645 } 646 647 /* Build the name */ 648 649 Info.InternalName = InternalName; 650 Status = AcpiNsBuildInternalName (&Info); 651 if (ACPI_FAILURE (Status)) 652 { 653 ACPI_MEM_FREE (InternalName); 654 return_ACPI_STATUS (Status); 655 } 656 657 *ConvertedName = InternalName; 658 return_ACPI_STATUS (AE_OK); 659} 660 661 662/******************************************************************************* 663 * 664 * FUNCTION: AcpiNsExternalizeName 665 * 666 * PARAMETERS: *InternalName - Internal representation of name 667 * **ConvertedName - Where to return the resulting 668 * external representation of name 669 * 670 * RETURN: Status 671 * 672 * DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) 673 * to its external form (e.g. "\_PR_.CPU0") 674 * 675 ******************************************************************************/ 676 677ACPI_STATUS 678AcpiNsExternalizeName ( 679 UINT32 InternalNameLength, 680 char *InternalName, 681 UINT32 *ConvertedNameLength, 682 char **ConvertedName) 683{ 684 ACPI_NATIVE_UINT NamesIndex = 0; 685 ACPI_NATIVE_UINT NumSegments = 0; 686 ACPI_NATIVE_UINT RequiredLength; 687 ACPI_NATIVE_UINT PrefixLength = 0; 688 ACPI_NATIVE_UINT i = 0; 689 ACPI_NATIVE_UINT j = 0; 690 691 692 ACPI_FUNCTION_TRACE ("NsExternalizeName"); 693 694 695 if (!InternalNameLength || 696 !InternalName || 697 !ConvertedName) 698 { 699 return_ACPI_STATUS (AE_BAD_PARAMETER); 700 } 701 702 /* 703 * Check for a prefix (one '\' | one or more '^'). 704 */ 705 switch (InternalName[0]) 706 { 707 case '\\': 708 PrefixLength = 1; 709 break; 710 711 case '^': 712 for (i = 0; i < InternalNameLength; i++) 713 { 714 if (InternalName[i] == '^') 715 { 716 PrefixLength = i + 1; 717 } 718 else 719 { 720 break; 721 } 722 } 723 724 if (i == InternalNameLength) 725 { 726 PrefixLength = i; 727 } 728 729 break; 730 731 default: 732 break; 733 } 734 735 /* 736 * Check for object names. Note that there could be 0-255 of these 737 * 4-byte elements. 738 */ 739 if (PrefixLength < InternalNameLength) 740 { 741 switch (InternalName[PrefixLength]) 742 { 743 case AML_MULTI_NAME_PREFIX_OP: 744 745 /* <count> 4-byte names */ 746 747 NamesIndex = PrefixLength + 2; 748 NumSegments = (ACPI_NATIVE_UINT) (UINT8) InternalName[(ACPI_NATIVE_UINT) (PrefixLength + 1)]; 749 break; 750 751 case AML_DUAL_NAME_PREFIX: 752 753 /* Two 4-byte names */ 754 755 NamesIndex = PrefixLength + 1; 756 NumSegments = 2; 757 break; 758 759 case 0: 760 761 /* NullName */ 762 763 NamesIndex = 0; 764 NumSegments = 0; 765 break; 766 767 default: 768 769 /* one 4-byte name */ 770 771 NamesIndex = PrefixLength; 772 NumSegments = 1; 773 break; 774 } 775 } 776 777 /* 778 * Calculate the length of ConvertedName, which equals the length 779 * of the prefix, length of all object names, length of any required 780 * punctuation ('.') between object names, plus the NULL terminator. 781 */ 782 RequiredLength = PrefixLength + (4 * NumSegments) + 783 ((NumSegments > 0) ? (NumSegments - 1) : 0) + 1; 784 785 /* 786 * Check to see if we're still in bounds. If not, there's a problem 787 * with InternalName (invalid format). 788 */ 789 if (RequiredLength > InternalNameLength) 790 { 791 ACPI_REPORT_ERROR (("NsExternalizeName: Invalid internal name\n")); 792 return_ACPI_STATUS (AE_BAD_PATHNAME); 793 } 794 795 /* 796 * Build ConvertedName... 797 */ 798 *ConvertedName = ACPI_MEM_CALLOCATE (RequiredLength); 799 if (!(*ConvertedName)) 800 { 801 return_ACPI_STATUS (AE_NO_MEMORY); 802 } 803 804 j = 0; 805 806 for (i = 0; i < PrefixLength; i++) 807 { 808 (*ConvertedName)[j++] = InternalName[i]; 809 } 810 811 if (NumSegments > 0) 812 { 813 for (i = 0; i < NumSegments; i++) 814 { 815 if (i > 0) 816 { 817 (*ConvertedName)[j++] = '.'; 818 } 819 820 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 821 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 822 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 823 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 824 } 825 } 826 827 if (ConvertedNameLength) 828 { 829 *ConvertedNameLength = (UINT32) RequiredLength; 830 } 831 832 return_ACPI_STATUS (AE_OK); 833} 834 835 836/******************************************************************************* 837 * 838 * FUNCTION: AcpiNsMapHandleToNode 839 * 840 * PARAMETERS: Handle - Handle to be converted to an Node 841 * 842 * RETURN: A Name table entry pointer 843 * 844 * DESCRIPTION: Convert a namespace handle to a real Node 845 * 846 * Note: Real integer handles allow for more verification 847 * and keep all pointers within this subsystem. 848 * 849 ******************************************************************************/ 850 851ACPI_NAMESPACE_NODE * 852AcpiNsMapHandleToNode ( 853 ACPI_HANDLE Handle) 854{ 855 856 ACPI_FUNCTION_ENTRY (); 857 858 859 /* 860 * Simple implementation. 861 */ 862 if (!Handle) 863 { 864 return (NULL); 865 } 866 867 if (Handle == ACPI_ROOT_OBJECT) 868 { 869 return (AcpiGbl_RootNode); 870 } 871 872 /* We can at least attempt to verify the handle */ 873 874 if (ACPI_GET_DESCRIPTOR_TYPE (Handle) != ACPI_DESC_TYPE_NAMED) 875 { 876 return (NULL); 877 } 878 879 return ((ACPI_NAMESPACE_NODE *) Handle); 880} 881 882 883/******************************************************************************* 884 * 885 * FUNCTION: AcpiNsConvertEntryToHandle 886 * 887 * PARAMETERS: Node - Node to be converted to a Handle 888 * 889 * RETURN: An USER ACPI_HANDLE 890 * 891 * DESCRIPTION: Convert a real Node to a namespace handle 892 * 893 ******************************************************************************/ 894 895ACPI_HANDLE 896AcpiNsConvertEntryToHandle ( 897 ACPI_NAMESPACE_NODE *Node) 898{ 899 900 901 /* 902 * Simple implementation for now; 903 */ 904 return ((ACPI_HANDLE) Node); 905 906 907/* --------------------------------------------------- 908 909 if (!Node) 910 { 911 return (NULL); 912 } 913 914 if (Node == AcpiGbl_RootNode) 915 { 916 return (ACPI_ROOT_OBJECT); 917 } 918 919 920 return ((ACPI_HANDLE) Node); 921------------------------------------------------------*/ 922} 923 924 925/******************************************************************************* 926 * 927 * FUNCTION: AcpiNsTerminate 928 * 929 * PARAMETERS: none 930 * 931 * RETURN: none 932 * 933 * DESCRIPTION: free memory allocated for table storage. 934 * 935 ******************************************************************************/ 936 937void 938AcpiNsTerminate (void) 939{ 940 ACPI_OPERAND_OBJECT *ObjDesc; 941 942 943 ACPI_FUNCTION_TRACE ("NsTerminate"); 944 945 946 /* 947 * 1) Free the entire namespace -- all nodes and objects 948 * 949 * Delete all object descriptors attached to namepsace nodes 950 */ 951 AcpiNsDeleteNamespaceSubtree (AcpiGbl_RootNode); 952 953 /* Detach any objects attached to the root */ 954 955 ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode); 956 if (ObjDesc) 957 { 958 AcpiNsDetachObject (AcpiGbl_RootNode); 959 } 960 961 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Namespace freed\n")); 962 963 /* 964 * 2) Now we can delete the ACPI tables 965 */ 966 AcpiTbDeleteAllTables (); 967 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n")); 968 969 return_VOID; 970} 971 972 973/******************************************************************************* 974 * 975 * FUNCTION: AcpiNsOpensScope 976 * 977 * PARAMETERS: Type - A valid namespace type 978 * 979 * RETURN: NEWSCOPE if the passed type "opens a name scope" according 980 * to the ACPI specification, else 0 981 * 982 ******************************************************************************/ 983 984UINT32 985AcpiNsOpensScope ( 986 ACPI_OBJECT_TYPE Type) 987{ 988 ACPI_FUNCTION_TRACE_STR ("NsOpensScope", AcpiUtGetTypeName (Type)); 989 990 991 if (!AcpiUtValidObjectType (Type)) 992 { 993 /* type code out of range */ 994 995 ACPI_REPORT_WARNING (("NsOpensScope: Invalid Object Type %X\n", Type)); 996 return_VALUE (ACPI_NS_NORMAL); 997 } 998 999 return_VALUE (((UINT32) AcpiGbl_NsProperties[Type]) & ACPI_NS_NEWSCOPE); 1000} 1001 1002 1003/******************************************************************************* 1004 * 1005 * FUNCTION: AcpiNsGetNodeByPath 1006 * 1007 * PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The 1008 * \ (backslash) and ^ (carat) prefixes, and the 1009 * . (period) to separate segments are supported. 1010 * StartNode - Root of subtree to be searched, or NS_ALL for the 1011 * root of the name space. If Name is fully 1012 * qualified (first INT8 is '\'), the passed value 1013 * of Scope will not be accessed. 1014 * Flags - Used to indicate whether to perform upsearch or 1015 * not. 1016 * ReturnNode - Where the Node is returned 1017 * 1018 * DESCRIPTION: Look up a name relative to a given scope and return the 1019 * corresponding Node. NOTE: Scope can be null. 1020 * 1021 * MUTEX: Locks namespace 1022 * 1023 ******************************************************************************/ 1024 1025ACPI_STATUS 1026AcpiNsGetNodeByPath ( 1027 char *Pathname, 1028 ACPI_NAMESPACE_NODE *StartNode, 1029 UINT32 Flags, 1030 ACPI_NAMESPACE_NODE **ReturnNode) 1031{ 1032 ACPI_GENERIC_STATE ScopeInfo; 1033 ACPI_STATUS Status; 1034 char *InternalPath = NULL; 1035 1036 1037 ACPI_FUNCTION_TRACE_PTR ("NsGetNodeByPath", Pathname); 1038 1039 1040 if (Pathname) 1041 { 1042 /* Convert path to internal representation */ 1043 1044 Status = AcpiNsInternalizeName (Pathname, &InternalPath); 1045 if (ACPI_FAILURE (Status)) 1046 { 1047 return_ACPI_STATUS (Status); 1048 } 1049 } 1050 1051 /* Must lock namespace during lookup */ 1052 1053 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 1054 if (ACPI_FAILURE (Status)) 1055 {
| 14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118#define __NSUTILS_C__ 119 120#include "acpi.h" 121#include "acnamesp.h" 122#include "amlcode.h" 123#include "actables.h" 124 125#define _COMPONENT ACPI_NAMESPACE 126 ACPI_MODULE_NAME ("nsutils") 127 128 129/******************************************************************************* 130 * 131 * FUNCTION: AcpiNsReportError 132 * 133 * PARAMETERS: ModuleName - Caller's module name (for error output) 134 * LineNumber - Caller's line number (for error output) 135 * ComponentId - Caller's component ID (for error output) 136 * Message - Error message to use on failure 137 * 138 * RETURN: None 139 * 140 * DESCRIPTION: Print warning message with full pathname 141 * 142 ******************************************************************************/ 143 144void 145AcpiNsReportError ( 146 char *ModuleName, 147 UINT32 LineNumber, 148 UINT32 ComponentId, 149 char *InternalName, 150 ACPI_STATUS LookupStatus) 151{ 152 ACPI_STATUS Status; 153 char *Name = NULL; 154 155 156 AcpiOsPrintf ("%8s-%04d: *** Error: Looking up ", 157 ModuleName, LineNumber); 158 159 if (LookupStatus == AE_BAD_CHARACTER) 160 { 161 /* There is a non-ascii character in the name */ 162 163 AcpiOsPrintf ("[0x%4.4X] (NON-ASCII)\n", *(ACPI_CAST_PTR (UINT32, InternalName))); 164 } 165 else 166 { 167 /* Convert path to external format */ 168 169 Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, InternalName, NULL, &Name); 170 171 /* Print target name */ 172 173 if (ACPI_SUCCESS (Status)) 174 { 175 AcpiOsPrintf ("[%s]", Name); 176 } 177 else 178 { 179 AcpiOsPrintf ("[COULD NOT EXTERNALIZE NAME]"); 180 } 181 182 if (Name) 183 { 184 ACPI_MEM_FREE (Name); 185 } 186 } 187 188 AcpiOsPrintf (" in namespace, %s\n", 189 AcpiFormatException (LookupStatus)); 190} 191 192 193/******************************************************************************* 194 * 195 * FUNCTION: AcpiNsReportMethodError 196 * 197 * PARAMETERS: ModuleName - Caller's module name (for error output) 198 * LineNumber - Caller's line number (for error output) 199 * ComponentId - Caller's component ID (for error output) 200 * Message - Error message to use on failure 201 * 202 * RETURN: None 203 * 204 * DESCRIPTION: Print warning message with full pathname 205 * 206 ******************************************************************************/ 207 208void 209AcpiNsReportMethodError ( 210 char *ModuleName, 211 UINT32 LineNumber, 212 UINT32 ComponentId, 213 char *Message, 214 ACPI_NAMESPACE_NODE *PrefixNode, 215 char *Path, 216 ACPI_STATUS MethodStatus) 217{ 218 ACPI_STATUS Status; 219 ACPI_NAMESPACE_NODE *Node = PrefixNode; 220 221 222 if (Path) 223 { 224 Status = AcpiNsGetNodeByPath (Path, PrefixNode, ACPI_NS_NO_UPSEARCH, &Node); 225 if (ACPI_FAILURE (Status)) 226 { 227 AcpiOsPrintf ("ReportMethodError: Could not get node\n"); 228 return; 229 } 230 } 231 232 AcpiOsPrintf ("%8s-%04d: *** Error: ", ModuleName, LineNumber); 233 AcpiNsPrintNodePathname (Node, Message); 234 AcpiOsPrintf (", %s\n", AcpiFormatException (MethodStatus)); 235} 236 237 238/******************************************************************************* 239 * 240 * FUNCTION: AcpiNsPrintNodePathname 241 * 242 * PARAMETERS: Node - Object 243 * Msg - Prefix message 244 * 245 * DESCRIPTION: Print an object's full namespace pathname 246 * Manages allocation/freeing of a pathname buffer 247 * 248 ******************************************************************************/ 249 250void 251AcpiNsPrintNodePathname ( 252 ACPI_NAMESPACE_NODE *Node, 253 char *Msg) 254{ 255 ACPI_BUFFER Buffer; 256 ACPI_STATUS Status; 257 258 259 if (!Node) 260 { 261 AcpiOsPrintf ("[NULL NAME]"); 262 return; 263 } 264 265 /* Convert handle to a full pathname and print it (with supplied message) */ 266 267 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 268 269 Status = AcpiNsHandleToPathname (Node, &Buffer); 270 if (ACPI_SUCCESS (Status)) 271 { 272 if (Msg) 273 { 274 AcpiOsPrintf ("%s ", Msg); 275 } 276 277 AcpiOsPrintf ("[%s] (Node %p)", (char *) Buffer.Pointer, Node); 278 ACPI_MEM_FREE (Buffer.Pointer); 279 } 280} 281 282 283/******************************************************************************* 284 * 285 * FUNCTION: AcpiNsValidRootPrefix 286 * 287 * PARAMETERS: Prefix - Character to be checked 288 * 289 * RETURN: TRUE if a valid prefix 290 * 291 * DESCRIPTION: Check if a character is a valid ACPI Root prefix 292 * 293 ******************************************************************************/ 294 295BOOLEAN 296AcpiNsValidRootPrefix ( 297 char Prefix) 298{ 299 300 return ((BOOLEAN) (Prefix == '\\')); 301} 302 303 304/******************************************************************************* 305 * 306 * FUNCTION: AcpiNsValidPathSeparator 307 * 308 * PARAMETERS: Sep - Character to be checked 309 * 310 * RETURN: TRUE if a valid path separator 311 * 312 * DESCRIPTION: Check if a character is a valid ACPI path separator 313 * 314 ******************************************************************************/ 315 316BOOLEAN 317AcpiNsValidPathSeparator ( 318 char Sep) 319{ 320 321 return ((BOOLEAN) (Sep == '.')); 322} 323 324 325/******************************************************************************* 326 * 327 * FUNCTION: AcpiNsGetType 328 * 329 * PARAMETERS: Handle - Parent Node to be examined 330 * 331 * RETURN: Type field from Node whose handle is passed 332 * 333 ******************************************************************************/ 334 335ACPI_OBJECT_TYPE 336AcpiNsGetType ( 337 ACPI_NAMESPACE_NODE *Node) 338{ 339 ACPI_FUNCTION_TRACE ("NsGetType"); 340 341 342 if (!Node) 343 { 344 ACPI_REPORT_WARNING (("NsGetType: Null Node ptr")); 345 return_VALUE (ACPI_TYPE_ANY); 346 } 347 348 return_VALUE ((ACPI_OBJECT_TYPE) Node->Type); 349} 350 351 352/******************************************************************************* 353 * 354 * FUNCTION: AcpiNsLocal 355 * 356 * PARAMETERS: Type - A namespace object type 357 * 358 * RETURN: LOCAL if names must be found locally in objects of the 359 * passed type, 0 if enclosing scopes should be searched 360 * 361 ******************************************************************************/ 362 363UINT32 364AcpiNsLocal ( 365 ACPI_OBJECT_TYPE Type) 366{ 367 ACPI_FUNCTION_TRACE ("NsLocal"); 368 369 370 if (!AcpiUtValidObjectType (Type)) 371 { 372 /* Type code out of range */ 373 374 ACPI_REPORT_WARNING (("NsLocal: Invalid Object Type\n")); 375 return_VALUE (ACPI_NS_NORMAL); 376 } 377 378 return_VALUE ((UINT32) AcpiGbl_NsProperties[Type] & ACPI_NS_LOCAL); 379} 380 381 382/******************************************************************************* 383 * 384 * FUNCTION: AcpiNsGetInternalNameLength 385 * 386 * PARAMETERS: Info - Info struct initialized with the 387 * external name pointer. 388 * 389 * RETURN: Status 390 * 391 * DESCRIPTION: Calculate the length of the internal (AML) namestring 392 * corresponding to the external (ASL) namestring. 393 * 394 ******************************************************************************/ 395 396void 397AcpiNsGetInternalNameLength ( 398 ACPI_NAMESTRING_INFO *Info) 399{ 400 char *NextExternalChar; 401 UINT32 i; 402 403 404 ACPI_FUNCTION_ENTRY (); 405 406 407 NextExternalChar = Info->ExternalName; 408 Info->NumCarats = 0; 409 Info->NumSegments = 0; 410 Info->FullyQualified = FALSE; 411 412 /* 413 * For the internal name, the required length is 4 bytes 414 * per segment, plus 1 each for RootPrefix, MultiNamePrefixOp, 415 * segment count, trailing null (which is not really needed, 416 * but no there's harm in putting it there) 417 * 418 * strlen() + 1 covers the first NameSeg, which has no 419 * path separator 420 */ 421 if (AcpiNsValidRootPrefix (NextExternalChar[0])) 422 { 423 Info->FullyQualified = TRUE; 424 NextExternalChar++; 425 } 426 else 427 { 428 /* 429 * Handle Carat prefixes 430 */ 431 while (*NextExternalChar == '^') 432 { 433 Info->NumCarats++; 434 NextExternalChar++; 435 } 436 } 437 438 /* 439 * Determine the number of ACPI name "segments" by counting 440 * the number of path separators within the string. Start 441 * with one segment since the segment count is (# separators) 442 * + 1, and zero separators is ok. 443 */ 444 if (*NextExternalChar) 445 { 446 Info->NumSegments = 1; 447 for (i = 0; NextExternalChar[i]; i++) 448 { 449 if (AcpiNsValidPathSeparator (NextExternalChar[i])) 450 { 451 Info->NumSegments++; 452 } 453 } 454 } 455 456 Info->Length = (ACPI_NAME_SIZE * Info->NumSegments) + 457 4 + Info->NumCarats; 458 459 Info->NextExternalChar = NextExternalChar; 460} 461 462 463/******************************************************************************* 464 * 465 * FUNCTION: AcpiNsBuildInternalName 466 * 467 * PARAMETERS: Info - Info struct fully initialized 468 * 469 * RETURN: Status 470 * 471 * DESCRIPTION: Construct the internal (AML) namestring 472 * corresponding to the external (ASL) namestring. 473 * 474 ******************************************************************************/ 475 476ACPI_STATUS 477AcpiNsBuildInternalName ( 478 ACPI_NAMESTRING_INFO *Info) 479{ 480 UINT32 NumSegments = Info->NumSegments; 481 char *InternalName = Info->InternalName; 482 char *ExternalName = Info->NextExternalChar; 483 char *Result = NULL; 484 ACPI_NATIVE_UINT i; 485 486 487 ACPI_FUNCTION_TRACE ("NsBuildInternalName"); 488 489 490 /* Setup the correct prefixes, counts, and pointers */ 491 492 if (Info->FullyQualified) 493 { 494 InternalName[0] = '\\'; 495 496 if (NumSegments <= 1) 497 { 498 Result = &InternalName[1]; 499 } 500 else if (NumSegments == 2) 501 { 502 InternalName[1] = AML_DUAL_NAME_PREFIX; 503 Result = &InternalName[2]; 504 } 505 else 506 { 507 InternalName[1] = AML_MULTI_NAME_PREFIX_OP; 508 InternalName[2] = (char) NumSegments; 509 Result = &InternalName[3]; 510 } 511 } 512 else 513 { 514 /* 515 * Not fully qualified. 516 * Handle Carats first, then append the name segments 517 */ 518 i = 0; 519 if (Info->NumCarats) 520 { 521 for (i = 0; i < Info->NumCarats; i++) 522 { 523 InternalName[i] = '^'; 524 } 525 } 526 527 if (NumSegments <= 1) 528 { 529 Result = &InternalName[i]; 530 } 531 else if (NumSegments == 2) 532 { 533 InternalName[i] = AML_DUAL_NAME_PREFIX; 534 Result = &InternalName[(ACPI_NATIVE_UINT) (i+1)]; 535 } 536 else 537 { 538 InternalName[i] = AML_MULTI_NAME_PREFIX_OP; 539 InternalName[(ACPI_NATIVE_UINT) (i+1)] = (char) NumSegments; 540 Result = &InternalName[(ACPI_NATIVE_UINT) (i+2)]; 541 } 542 } 543 544 /* Build the name (minus path separators) */ 545 546 for (; NumSegments; NumSegments--) 547 { 548 for (i = 0; i < ACPI_NAME_SIZE; i++) 549 { 550 if (AcpiNsValidPathSeparator (*ExternalName) || 551 (*ExternalName == 0)) 552 { 553 /* Pad the segment with underscore(s) if segment is short */ 554 555 Result[i] = '_'; 556 } 557 else 558 { 559 /* Convert the character to uppercase and save it */ 560 561 Result[i] = (char) ACPI_TOUPPER ((int) *ExternalName); 562 ExternalName++; 563 } 564 } 565 566 /* Now we must have a path separator, or the pathname is bad */ 567 568 if (!AcpiNsValidPathSeparator (*ExternalName) && 569 (*ExternalName != 0)) 570 { 571 return_ACPI_STATUS (AE_BAD_PARAMETER); 572 } 573 574 /* Move on the next segment */ 575 576 ExternalName++; 577 Result += ACPI_NAME_SIZE; 578 } 579 580 /* Terminate the string */ 581 582 *Result = 0; 583 584 if (Info->FullyQualified) 585 { 586 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (abs) \"\\%s\"\n", 587 InternalName, InternalName)); 588 } 589 else 590 { 591 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n", 592 InternalName, InternalName)); 593 } 594 595 return_ACPI_STATUS (AE_OK); 596} 597 598 599/******************************************************************************* 600 * 601 * FUNCTION: AcpiNsInternalizeName 602 * 603 * PARAMETERS: *ExternalName - External representation of name 604 * **Converted Name - Where to return the resulting 605 * internal represention of the name 606 * 607 * RETURN: Status 608 * 609 * DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0") 610 * to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) 611 * 612 *******************************************************************************/ 613 614ACPI_STATUS 615AcpiNsInternalizeName ( 616 char *ExternalName, 617 char **ConvertedName) 618{ 619 char *InternalName; 620 ACPI_NAMESTRING_INFO Info; 621 ACPI_STATUS Status; 622 623 624 ACPI_FUNCTION_TRACE ("NsInternalizeName"); 625 626 627 if ((!ExternalName) || 628 (*ExternalName == 0) || 629 (!ConvertedName)) 630 { 631 return_ACPI_STATUS (AE_BAD_PARAMETER); 632 } 633 634 /* Get the length of the new internal name */ 635 636 Info.ExternalName = ExternalName; 637 AcpiNsGetInternalNameLength (&Info); 638 639 /* We need a segment to store the internal name */ 640 641 InternalName = ACPI_MEM_CALLOCATE (Info.Length); 642 if (!InternalName) 643 { 644 return_ACPI_STATUS (AE_NO_MEMORY); 645 } 646 647 /* Build the name */ 648 649 Info.InternalName = InternalName; 650 Status = AcpiNsBuildInternalName (&Info); 651 if (ACPI_FAILURE (Status)) 652 { 653 ACPI_MEM_FREE (InternalName); 654 return_ACPI_STATUS (Status); 655 } 656 657 *ConvertedName = InternalName; 658 return_ACPI_STATUS (AE_OK); 659} 660 661 662/******************************************************************************* 663 * 664 * FUNCTION: AcpiNsExternalizeName 665 * 666 * PARAMETERS: *InternalName - Internal representation of name 667 * **ConvertedName - Where to return the resulting 668 * external representation of name 669 * 670 * RETURN: Status 671 * 672 * DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) 673 * to its external form (e.g. "\_PR_.CPU0") 674 * 675 ******************************************************************************/ 676 677ACPI_STATUS 678AcpiNsExternalizeName ( 679 UINT32 InternalNameLength, 680 char *InternalName, 681 UINT32 *ConvertedNameLength, 682 char **ConvertedName) 683{ 684 ACPI_NATIVE_UINT NamesIndex = 0; 685 ACPI_NATIVE_UINT NumSegments = 0; 686 ACPI_NATIVE_UINT RequiredLength; 687 ACPI_NATIVE_UINT PrefixLength = 0; 688 ACPI_NATIVE_UINT i = 0; 689 ACPI_NATIVE_UINT j = 0; 690 691 692 ACPI_FUNCTION_TRACE ("NsExternalizeName"); 693 694 695 if (!InternalNameLength || 696 !InternalName || 697 !ConvertedName) 698 { 699 return_ACPI_STATUS (AE_BAD_PARAMETER); 700 } 701 702 /* 703 * Check for a prefix (one '\' | one or more '^'). 704 */ 705 switch (InternalName[0]) 706 { 707 case '\\': 708 PrefixLength = 1; 709 break; 710 711 case '^': 712 for (i = 0; i < InternalNameLength; i++) 713 { 714 if (InternalName[i] == '^') 715 { 716 PrefixLength = i + 1; 717 } 718 else 719 { 720 break; 721 } 722 } 723 724 if (i == InternalNameLength) 725 { 726 PrefixLength = i; 727 } 728 729 break; 730 731 default: 732 break; 733 } 734 735 /* 736 * Check for object names. Note that there could be 0-255 of these 737 * 4-byte elements. 738 */ 739 if (PrefixLength < InternalNameLength) 740 { 741 switch (InternalName[PrefixLength]) 742 { 743 case AML_MULTI_NAME_PREFIX_OP: 744 745 /* <count> 4-byte names */ 746 747 NamesIndex = PrefixLength + 2; 748 NumSegments = (ACPI_NATIVE_UINT) (UINT8) InternalName[(ACPI_NATIVE_UINT) (PrefixLength + 1)]; 749 break; 750 751 case AML_DUAL_NAME_PREFIX: 752 753 /* Two 4-byte names */ 754 755 NamesIndex = PrefixLength + 1; 756 NumSegments = 2; 757 break; 758 759 case 0: 760 761 /* NullName */ 762 763 NamesIndex = 0; 764 NumSegments = 0; 765 break; 766 767 default: 768 769 /* one 4-byte name */ 770 771 NamesIndex = PrefixLength; 772 NumSegments = 1; 773 break; 774 } 775 } 776 777 /* 778 * Calculate the length of ConvertedName, which equals the length 779 * of the prefix, length of all object names, length of any required 780 * punctuation ('.') between object names, plus the NULL terminator. 781 */ 782 RequiredLength = PrefixLength + (4 * NumSegments) + 783 ((NumSegments > 0) ? (NumSegments - 1) : 0) + 1; 784 785 /* 786 * Check to see if we're still in bounds. If not, there's a problem 787 * with InternalName (invalid format). 788 */ 789 if (RequiredLength > InternalNameLength) 790 { 791 ACPI_REPORT_ERROR (("NsExternalizeName: Invalid internal name\n")); 792 return_ACPI_STATUS (AE_BAD_PATHNAME); 793 } 794 795 /* 796 * Build ConvertedName... 797 */ 798 *ConvertedName = ACPI_MEM_CALLOCATE (RequiredLength); 799 if (!(*ConvertedName)) 800 { 801 return_ACPI_STATUS (AE_NO_MEMORY); 802 } 803 804 j = 0; 805 806 for (i = 0; i < PrefixLength; i++) 807 { 808 (*ConvertedName)[j++] = InternalName[i]; 809 } 810 811 if (NumSegments > 0) 812 { 813 for (i = 0; i < NumSegments; i++) 814 { 815 if (i > 0) 816 { 817 (*ConvertedName)[j++] = '.'; 818 } 819 820 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 821 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 822 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 823 (*ConvertedName)[j++] = InternalName[NamesIndex++]; 824 } 825 } 826 827 if (ConvertedNameLength) 828 { 829 *ConvertedNameLength = (UINT32) RequiredLength; 830 } 831 832 return_ACPI_STATUS (AE_OK); 833} 834 835 836/******************************************************************************* 837 * 838 * FUNCTION: AcpiNsMapHandleToNode 839 * 840 * PARAMETERS: Handle - Handle to be converted to an Node 841 * 842 * RETURN: A Name table entry pointer 843 * 844 * DESCRIPTION: Convert a namespace handle to a real Node 845 * 846 * Note: Real integer handles allow for more verification 847 * and keep all pointers within this subsystem. 848 * 849 ******************************************************************************/ 850 851ACPI_NAMESPACE_NODE * 852AcpiNsMapHandleToNode ( 853 ACPI_HANDLE Handle) 854{ 855 856 ACPI_FUNCTION_ENTRY (); 857 858 859 /* 860 * Simple implementation. 861 */ 862 if (!Handle) 863 { 864 return (NULL); 865 } 866 867 if (Handle == ACPI_ROOT_OBJECT) 868 { 869 return (AcpiGbl_RootNode); 870 } 871 872 /* We can at least attempt to verify the handle */ 873 874 if (ACPI_GET_DESCRIPTOR_TYPE (Handle) != ACPI_DESC_TYPE_NAMED) 875 { 876 return (NULL); 877 } 878 879 return ((ACPI_NAMESPACE_NODE *) Handle); 880} 881 882 883/******************************************************************************* 884 * 885 * FUNCTION: AcpiNsConvertEntryToHandle 886 * 887 * PARAMETERS: Node - Node to be converted to a Handle 888 * 889 * RETURN: An USER ACPI_HANDLE 890 * 891 * DESCRIPTION: Convert a real Node to a namespace handle 892 * 893 ******************************************************************************/ 894 895ACPI_HANDLE 896AcpiNsConvertEntryToHandle ( 897 ACPI_NAMESPACE_NODE *Node) 898{ 899 900 901 /* 902 * Simple implementation for now; 903 */ 904 return ((ACPI_HANDLE) Node); 905 906 907/* --------------------------------------------------- 908 909 if (!Node) 910 { 911 return (NULL); 912 } 913 914 if (Node == AcpiGbl_RootNode) 915 { 916 return (ACPI_ROOT_OBJECT); 917 } 918 919 920 return ((ACPI_HANDLE) Node); 921------------------------------------------------------*/ 922} 923 924 925/******************************************************************************* 926 * 927 * FUNCTION: AcpiNsTerminate 928 * 929 * PARAMETERS: none 930 * 931 * RETURN: none 932 * 933 * DESCRIPTION: free memory allocated for table storage. 934 * 935 ******************************************************************************/ 936 937void 938AcpiNsTerminate (void) 939{ 940 ACPI_OPERAND_OBJECT *ObjDesc; 941 942 943 ACPI_FUNCTION_TRACE ("NsTerminate"); 944 945 946 /* 947 * 1) Free the entire namespace -- all nodes and objects 948 * 949 * Delete all object descriptors attached to namepsace nodes 950 */ 951 AcpiNsDeleteNamespaceSubtree (AcpiGbl_RootNode); 952 953 /* Detach any objects attached to the root */ 954 955 ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode); 956 if (ObjDesc) 957 { 958 AcpiNsDetachObject (AcpiGbl_RootNode); 959 } 960 961 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Namespace freed\n")); 962 963 /* 964 * 2) Now we can delete the ACPI tables 965 */ 966 AcpiTbDeleteAllTables (); 967 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n")); 968 969 return_VOID; 970} 971 972 973/******************************************************************************* 974 * 975 * FUNCTION: AcpiNsOpensScope 976 * 977 * PARAMETERS: Type - A valid namespace type 978 * 979 * RETURN: NEWSCOPE if the passed type "opens a name scope" according 980 * to the ACPI specification, else 0 981 * 982 ******************************************************************************/ 983 984UINT32 985AcpiNsOpensScope ( 986 ACPI_OBJECT_TYPE Type) 987{ 988 ACPI_FUNCTION_TRACE_STR ("NsOpensScope", AcpiUtGetTypeName (Type)); 989 990 991 if (!AcpiUtValidObjectType (Type)) 992 { 993 /* type code out of range */ 994 995 ACPI_REPORT_WARNING (("NsOpensScope: Invalid Object Type %X\n", Type)); 996 return_VALUE (ACPI_NS_NORMAL); 997 } 998 999 return_VALUE (((UINT32) AcpiGbl_NsProperties[Type]) & ACPI_NS_NEWSCOPE); 1000} 1001 1002 1003/******************************************************************************* 1004 * 1005 * FUNCTION: AcpiNsGetNodeByPath 1006 * 1007 * PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The 1008 * \ (backslash) and ^ (carat) prefixes, and the 1009 * . (period) to separate segments are supported. 1010 * StartNode - Root of subtree to be searched, or NS_ALL for the 1011 * root of the name space. If Name is fully 1012 * qualified (first INT8 is '\'), the passed value 1013 * of Scope will not be accessed. 1014 * Flags - Used to indicate whether to perform upsearch or 1015 * not. 1016 * ReturnNode - Where the Node is returned 1017 * 1018 * DESCRIPTION: Look up a name relative to a given scope and return the 1019 * corresponding Node. NOTE: Scope can be null. 1020 * 1021 * MUTEX: Locks namespace 1022 * 1023 ******************************************************************************/ 1024 1025ACPI_STATUS 1026AcpiNsGetNodeByPath ( 1027 char *Pathname, 1028 ACPI_NAMESPACE_NODE *StartNode, 1029 UINT32 Flags, 1030 ACPI_NAMESPACE_NODE **ReturnNode) 1031{ 1032 ACPI_GENERIC_STATE ScopeInfo; 1033 ACPI_STATUS Status; 1034 char *InternalPath = NULL; 1035 1036 1037 ACPI_FUNCTION_TRACE_PTR ("NsGetNodeByPath", Pathname); 1038 1039 1040 if (Pathname) 1041 { 1042 /* Convert path to internal representation */ 1043 1044 Status = AcpiNsInternalizeName (Pathname, &InternalPath); 1045 if (ACPI_FAILURE (Status)) 1046 { 1047 return_ACPI_STATUS (Status); 1048 } 1049 } 1050 1051 /* Must lock namespace during lookup */ 1052 1053 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 1054 if (ACPI_FAILURE (Status)) 1055 {
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