1 /****************************************************************************** 2 * 3 * Module Name: tbinstal - ACPI table installation and removal 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2012, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 45 #define __TBINSTAL_C__ 46 47 #include <contrib/dev/acpica/include/acpi.h> 48 #include <contrib/dev/acpica/include/accommon.h> 49 #include <contrib/dev/acpica/include/acnamesp.h> 50 #include <contrib/dev/acpica/include/actables.h> 51 52 53 #define _COMPONENT ACPI_TABLES 54 ACPI_MODULE_NAME ("tbinstal") 55 56 57 /****************************************************************************** 58 * 59 * FUNCTION: AcpiTbVerifyTable 60 * 61 * PARAMETERS: TableDesc - table 62 * 63 * RETURN: Status 64 * 65 * DESCRIPTION: this function is called to verify and map table 66 * 67 *****************************************************************************/ 68 69 ACPI_STATUS 70 AcpiTbVerifyTable ( 71 ACPI_TABLE_DESC *TableDesc) 72 { 73 ACPI_STATUS Status = AE_OK; 74 75 76 ACPI_FUNCTION_TRACE (TbVerifyTable); 77 78 79 /* Map the table if necessary */ 80 81 if (!TableDesc->Pointer) 82 { 83 if ((TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) == 84 ACPI_TABLE_ORIGIN_MAPPED) 85 { 86 TableDesc->Pointer = AcpiOsMapMemory ( 87 TableDesc->Address, TableDesc->Length); 88 } 89 90 if (!TableDesc->Pointer) 91 { 92 return_ACPI_STATUS (AE_NO_MEMORY); 93 } 94 } 95 96 /* FACS is the odd table, has no standard ACPI header and no checksum */ 97 98 if (!ACPI_COMPARE_NAME (&TableDesc->Signature, ACPI_SIG_FACS)) 99 { 100 /* Always calculate checksum, ignore bad checksum if requested */ 101 102 Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length); 103 } 104 105 return_ACPI_STATUS (Status); 106 } 107 108 109 /******************************************************************************* 110 * 111 * FUNCTION: AcpiTbAddTable 112 * 113 * PARAMETERS: TableDesc - Table descriptor 114 * TableIndex - Where the table index is returned 115 * 116 * RETURN: Status 117 * 118 * DESCRIPTION: This function is called to add an ACPI table. It is used to 119 * dynamically load tables via the Load and LoadTable AML 120 * operators. 121 * 122 ******************************************************************************/ 123 124 ACPI_STATUS 125 AcpiTbAddTable ( 126 ACPI_TABLE_DESC *TableDesc, 127 UINT32 *TableIndex) 128 { 129 UINT32 i; 130 ACPI_STATUS Status = AE_OK; 131 132 133 ACPI_FUNCTION_TRACE (TbAddTable); 134 135 136 if (!TableDesc->Pointer) 137 { 138 Status = AcpiTbVerifyTable (TableDesc); 139 if (ACPI_FAILURE (Status) || !TableDesc->Pointer) 140 { 141 return_ACPI_STATUS (Status); 142 } 143 } 144 145 /* 146 * Validate the incoming table signature. 147 * 148 * 1) Originally, we checked the table signature for "SSDT" or "PSDT". 149 * 2) We added support for OEMx tables, signature "OEM". 150 * 3) Valid tables were encountered with a null signature, so we just 151 * gave up on validating the signature, (05/2008). 152 * 4) We encountered non-AML tables such as the MADT, which caused 153 * interpreter errors and kernel faults. So now, we once again allow 154 * only "SSDT", "OEMx", and now, also a null signature. (05/2011). 155 */ 156 if ((TableDesc->Pointer->Signature[0] != 0x00) && 157 (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) && 158 (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3))) 159 { 160 ACPI_ERROR ((AE_INFO, 161 "Table has invalid signature [%4.4s] (0x%8.8X), must be SSDT or OEMx", 162 AcpiUtValidAcpiName (*(UINT32 *) TableDesc->Pointer->Signature) ? 163 TableDesc->Pointer->Signature : "????", 164 *(UINT32 *) TableDesc->Pointer->Signature)); 165 166 return_ACPI_STATUS (AE_BAD_SIGNATURE); 167 } 168 169 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 170 171 /* Check if table is already registered */ 172 173 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) 174 { 175 if (!AcpiGbl_RootTableList.Tables[i].Pointer) 176 { 177 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); 178 if (ACPI_FAILURE (Status) || 179 !AcpiGbl_RootTableList.Tables[i].Pointer) 180 { 181 continue; 182 } 183 } 184 185 /* 186 * Check for a table match on the entire table length, 187 * not just the header. 188 */ 189 if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length) 190 { 191 continue; 192 } 193 194 if (ACPI_MEMCMP (TableDesc->Pointer, 195 AcpiGbl_RootTableList.Tables[i].Pointer, 196 AcpiGbl_RootTableList.Tables[i].Length)) 197 { 198 continue; 199 } 200 201 /* 202 * Note: the current mechanism does not unregister a table if it is 203 * dynamically unloaded. The related namespace entries are deleted, 204 * but the table remains in the root table list. 205 * 206 * The assumption here is that the number of different tables that 207 * will be loaded is actually small, and there is minimal overhead 208 * in just keeping the table in case it is needed again. 209 * 210 * If this assumption changes in the future (perhaps on large 211 * machines with many table load/unload operations), tables will 212 * need to be unregistered when they are unloaded, and slots in the 213 * root table list should be reused when empty. 214 */ 215 216 /* 217 * Table is already registered. 218 * We can delete the table that was passed as a parameter. 219 */ 220 AcpiTbDeleteTable (TableDesc); 221 *TableIndex = i; 222 223 if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED) 224 { 225 /* Table is still loaded, this is an error */ 226 227 Status = AE_ALREADY_EXISTS; 228 goto Release; 229 } 230 else 231 { 232 /* Table was unloaded, allow it to be reloaded */ 233 234 TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer; 235 TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address; 236 Status = AE_OK; 237 goto PrintHeader; 238 } 239 } 240 241 /* 242 * ACPI Table Override: 243 * Allow the host to override dynamically loaded tables. 244 * NOTE: the table is fully mapped at this point, and the mapping will 245 * be deleted by TbTableOverride if the table is actually overridden. 246 */ 247 (void) AcpiTbTableOverride (TableDesc->Pointer, TableDesc); 248 249 /* Add the table to the global root table list */ 250 251 Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer, 252 TableDesc->Length, TableDesc->Flags, TableIndex); 253 if (ACPI_FAILURE (Status)) 254 { 255 goto Release; 256 } 257 258 PrintHeader: 259 AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer); 260 261 Release: 262 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 263 return_ACPI_STATUS (Status); 264 } 265 266 267 /******************************************************************************* 268 * 269 * FUNCTION: AcpiTbTableOverride 270 * 271 * PARAMETERS: TableHeader - Header for the original table 272 * TableDesc - Table descriptor initialized for the 273 * original table. May or may not be mapped. 274 * 275 * RETURN: Pointer to the entire new table. NULL if table not overridden. 276 * If overridden, installs the new table within the input table 277 * descriptor. 278 * 279 * DESCRIPTION: Attempt table override by calling the OSL override functions. 280 * Note: If the table is overridden, then the entire new table 281 * is mapped and returned by this function. 282 * 283 ******************************************************************************/ 284 285 ACPI_TABLE_HEADER * 286 AcpiTbTableOverride ( 287 ACPI_TABLE_HEADER *TableHeader, 288 ACPI_TABLE_DESC *TableDesc) 289 { 290 ACPI_STATUS Status; 291 ACPI_TABLE_HEADER *NewTable = NULL; 292 ACPI_PHYSICAL_ADDRESS NewAddress = 0; 293 UINT32 NewTableLength = 0; 294 UINT8 NewFlags; 295 char *OverrideType; 296 297 298 /* (1) Attempt logical override (returns a logical address) */ 299 300 Status = AcpiOsTableOverride (TableHeader, &NewTable); 301 if (ACPI_SUCCESS (Status) && NewTable) 302 { 303 NewAddress = ACPI_PTR_TO_PHYSADDR (NewTable); 304 NewTableLength = NewTable->Length; 305 NewFlags = ACPI_TABLE_ORIGIN_OVERRIDE; 306 OverrideType = "Logical"; 307 goto FinishOverride; 308 } 309 310 /* (2) Attempt physical override (returns a physical address) */ 311 312 Status = AcpiOsPhysicalTableOverride (TableHeader, 313 &NewAddress, &NewTableLength); 314 if (ACPI_SUCCESS (Status) && NewAddress && NewTableLength) 315 { 316 /* Map the entire new table */ 317 318 NewTable = AcpiOsMapMemory (NewAddress, NewTableLength); 319 if (!NewTable) 320 { 321 ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY, 322 "%4.4s %p Attempted physical table override failed", 323 TableHeader->Signature, 324 ACPI_CAST_PTR (void, TableDesc->Address))); 325 return (NULL); 326 } 327 328 OverrideType = "Physical"; 329 NewFlags = ACPI_TABLE_ORIGIN_MAPPED; 330 goto FinishOverride; 331 } 332 333 return (NULL); /* There was no override */ 334 335 336 FinishOverride: 337 338 ACPI_INFO ((AE_INFO, 339 "%4.4s %p %s table override, new table: %p", 340 TableHeader->Signature, 341 ACPI_CAST_PTR (void, TableDesc->Address), 342 OverrideType, NewTable)); 343 344 /* We can now unmap/delete the original table (if fully mapped) */ 345 346 AcpiTbDeleteTable (TableDesc); 347 348 /* Setup descriptor for the new table */ 349 350 TableDesc->Address = NewAddress; 351 TableDesc->Pointer = NewTable; 352 TableDesc->Length = NewTableLength; 353 TableDesc->Flags = NewFlags; 354 355 return (NewTable); 356 } 357 358 359 /******************************************************************************* 360 * 361 * FUNCTION: AcpiTbResizeRootTableList 362 * 363 * PARAMETERS: None 364 * 365 * RETURN: Status 366 * 367 * DESCRIPTION: Expand the size of global table array 368 * 369 ******************************************************************************/ 370 371 ACPI_STATUS 372 AcpiTbResizeRootTableList ( 373 void) 374 { 375 ACPI_TABLE_DESC *Tables; 376 377 378 ACPI_FUNCTION_TRACE (TbResizeRootTableList); 379 380 381 /* AllowResize flag is a parameter to AcpiInitializeTables */ 382 383 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE)) 384 { 385 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed")); 386 return_ACPI_STATUS (AE_SUPPORT); 387 } 388 389 /* Increase the Table Array size */ 390 391 Tables = ACPI_ALLOCATE_ZEROED ( 392 ((ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount + 393 ACPI_ROOT_TABLE_SIZE_INCREMENT) * 394 sizeof (ACPI_TABLE_DESC)); 395 if (!Tables) 396 { 397 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array")); 398 return_ACPI_STATUS (AE_NO_MEMORY); 399 } 400 401 /* Copy and free the previous table array */ 402 403 if (AcpiGbl_RootTableList.Tables) 404 { 405 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables, 406 (ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount * sizeof (ACPI_TABLE_DESC)); 407 408 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 409 { 410 ACPI_FREE (AcpiGbl_RootTableList.Tables); 411 } 412 } 413 414 AcpiGbl_RootTableList.Tables = Tables; 415 AcpiGbl_RootTableList.MaxTableCount += ACPI_ROOT_TABLE_SIZE_INCREMENT; 416 AcpiGbl_RootTableList.Flags |= (UINT8) ACPI_ROOT_ORIGIN_ALLOCATED; 417 418 return_ACPI_STATUS (AE_OK); 419 } 420 421 422 /******************************************************************************* 423 * 424 * FUNCTION: AcpiTbStoreTable 425 * 426 * PARAMETERS: Address - Table address 427 * Table - Table header 428 * Length - Table length 429 * Flags - flags 430 * 431 * RETURN: Status and table index. 432 * 433 * DESCRIPTION: Add an ACPI table to the global table list 434 * 435 ******************************************************************************/ 436 437 ACPI_STATUS 438 AcpiTbStoreTable ( 439 ACPI_PHYSICAL_ADDRESS Address, 440 ACPI_TABLE_HEADER *Table, 441 UINT32 Length, 442 UINT8 Flags, 443 UINT32 *TableIndex) 444 { 445 ACPI_STATUS Status; 446 ACPI_TABLE_DESC *NewTable; 447 448 449 /* Ensure that there is room for the table in the Root Table List */ 450 451 if (AcpiGbl_RootTableList.CurrentTableCount >= 452 AcpiGbl_RootTableList.MaxTableCount) 453 { 454 Status = AcpiTbResizeRootTableList(); 455 if (ACPI_FAILURE (Status)) 456 { 457 return (Status); 458 } 459 } 460 461 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount]; 462 463 /* Initialize added table */ 464 465 NewTable->Address = Address; 466 NewTable->Pointer = Table; 467 NewTable->Length = Length; 468 NewTable->OwnerId = 0; 469 NewTable->Flags = Flags; 470 471 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature); 472 473 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount; 474 AcpiGbl_RootTableList.CurrentTableCount++; 475 return (AE_OK); 476 } 477 478 479 /******************************************************************************* 480 * 481 * FUNCTION: AcpiTbDeleteTable 482 * 483 * PARAMETERS: TableIndex - Table index 484 * 485 * RETURN: None 486 * 487 * DESCRIPTION: Delete one internal ACPI table 488 * 489 ******************************************************************************/ 490 491 void 492 AcpiTbDeleteTable ( 493 ACPI_TABLE_DESC *TableDesc) 494 { 495 496 /* Table must be mapped or allocated */ 497 498 if (!TableDesc->Pointer) 499 { 500 return; 501 } 502 503 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) 504 { 505 case ACPI_TABLE_ORIGIN_MAPPED: 506 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length); 507 break; 508 509 case ACPI_TABLE_ORIGIN_ALLOCATED: 510 ACPI_FREE (TableDesc->Pointer); 511 break; 512 513 default: 514 break; 515 } 516 517 TableDesc->Pointer = NULL; 518 } 519 520 521 /******************************************************************************* 522 * 523 * FUNCTION: AcpiTbTerminate 524 * 525 * PARAMETERS: None 526 * 527 * RETURN: None 528 * 529 * DESCRIPTION: Delete all internal ACPI tables 530 * 531 ******************************************************************************/ 532 533 void 534 AcpiTbTerminate ( 535 void) 536 { 537 UINT32 i; 538 539 540 ACPI_FUNCTION_TRACE (TbTerminate); 541 542 543 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 544 545 /* Delete the individual tables */ 546 547 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) 548 { 549 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]); 550 } 551 552 /* 553 * Delete the root table array if allocated locally. Array cannot be 554 * mapped, so we don't need to check for that flag. 555 */ 556 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 557 { 558 ACPI_FREE (AcpiGbl_RootTableList.Tables); 559 } 560 561 AcpiGbl_RootTableList.Tables = NULL; 562 AcpiGbl_RootTableList.Flags = 0; 563 AcpiGbl_RootTableList.CurrentTableCount = 0; 564 565 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n")); 566 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 567 } 568 569 570 /******************************************************************************* 571 * 572 * FUNCTION: AcpiTbDeleteNamespaceByOwner 573 * 574 * PARAMETERS: TableIndex - Table index 575 * 576 * RETURN: Status 577 * 578 * DESCRIPTION: Delete all namespace objects created when this table was loaded. 579 * 580 ******************************************************************************/ 581 582 ACPI_STATUS 583 AcpiTbDeleteNamespaceByOwner ( 584 UINT32 TableIndex) 585 { 586 ACPI_OWNER_ID OwnerId; 587 ACPI_STATUS Status; 588 589 590 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner); 591 592 593 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES); 594 if (ACPI_FAILURE (Status)) 595 { 596 return_ACPI_STATUS (Status); 597 } 598 599 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) 600 { 601 /* The table index does not exist */ 602 603 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 604 return_ACPI_STATUS (AE_NOT_EXIST); 605 } 606 607 /* Get the owner ID for this table, used to delete namespace nodes */ 608 609 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; 610 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 611 612 /* 613 * Need to acquire the namespace writer lock to prevent interference 614 * with any concurrent namespace walks. The interpreter must be 615 * released during the deletion since the acquisition of the deletion 616 * lock may block, and also since the execution of a namespace walk 617 * must be allowed to use the interpreter. 618 */ 619 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER); 620 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock); 621 622 AcpiNsDeleteNamespaceByOwner (OwnerId); 623 if (ACPI_FAILURE (Status)) 624 { 625 return_ACPI_STATUS (Status); 626 } 627 628 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock); 629 630 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER); 631 return_ACPI_STATUS (Status); 632 } 633 634 635 /******************************************************************************* 636 * 637 * FUNCTION: AcpiTbAllocateOwnerId 638 * 639 * PARAMETERS: TableIndex - Table index 640 * 641 * RETURN: Status 642 * 643 * DESCRIPTION: Allocates OwnerId in TableDesc 644 * 645 ******************************************************************************/ 646 647 ACPI_STATUS 648 AcpiTbAllocateOwnerId ( 649 UINT32 TableIndex) 650 { 651 ACPI_STATUS Status = AE_BAD_PARAMETER; 652 653 654 ACPI_FUNCTION_TRACE (TbAllocateOwnerId); 655 656 657 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 658 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 659 { 660 Status = AcpiUtAllocateOwnerId 661 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); 662 } 663 664 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 665 return_ACPI_STATUS (Status); 666 } 667 668 669 /******************************************************************************* 670 * 671 * FUNCTION: AcpiTbReleaseOwnerId 672 * 673 * PARAMETERS: TableIndex - Table index 674 * 675 * RETURN: Status 676 * 677 * DESCRIPTION: Releases OwnerId in TableDesc 678 * 679 ******************************************************************************/ 680 681 ACPI_STATUS 682 AcpiTbReleaseOwnerId ( 683 UINT32 TableIndex) 684 { 685 ACPI_STATUS Status = AE_BAD_PARAMETER; 686 687 688 ACPI_FUNCTION_TRACE (TbReleaseOwnerId); 689 690 691 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 692 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 693 { 694 AcpiUtReleaseOwnerId ( 695 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); 696 Status = AE_OK; 697 } 698 699 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 700 return_ACPI_STATUS (Status); 701 } 702 703 704 /******************************************************************************* 705 * 706 * FUNCTION: AcpiTbGetOwnerId 707 * 708 * PARAMETERS: TableIndex - Table index 709 * OwnerId - Where the table OwnerId is returned 710 * 711 * RETURN: Status 712 * 713 * DESCRIPTION: returns OwnerId for the ACPI table 714 * 715 ******************************************************************************/ 716 717 ACPI_STATUS 718 AcpiTbGetOwnerId ( 719 UINT32 TableIndex, 720 ACPI_OWNER_ID *OwnerId) 721 { 722 ACPI_STATUS Status = AE_BAD_PARAMETER; 723 724 725 ACPI_FUNCTION_TRACE (TbGetOwnerId); 726 727 728 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 729 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 730 { 731 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; 732 Status = AE_OK; 733 } 734 735 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 736 return_ACPI_STATUS (Status); 737 } 738 739 740 /******************************************************************************* 741 * 742 * FUNCTION: AcpiTbIsTableLoaded 743 * 744 * PARAMETERS: TableIndex - Table index 745 * 746 * RETURN: Table Loaded Flag 747 * 748 ******************************************************************************/ 749 750 BOOLEAN 751 AcpiTbIsTableLoaded ( 752 UINT32 TableIndex) 753 { 754 BOOLEAN IsLoaded = FALSE; 755 756 757 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 758 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 759 { 760 IsLoaded = (BOOLEAN) 761 (AcpiGbl_RootTableList.Tables[TableIndex].Flags & 762 ACPI_TABLE_IS_LOADED); 763 } 764 765 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 766 return (IsLoaded); 767 } 768 769 770 /******************************************************************************* 771 * 772 * FUNCTION: AcpiTbSetTableLoadedFlag 773 * 774 * PARAMETERS: TableIndex - Table index 775 * IsLoaded - TRUE if table is loaded, FALSE otherwise 776 * 777 * RETURN: None 778 * 779 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. 780 * 781 ******************************************************************************/ 782 783 void 784 AcpiTbSetTableLoadedFlag ( 785 UINT32 TableIndex, 786 BOOLEAN IsLoaded) 787 { 788 789 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 790 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 791 { 792 if (IsLoaded) 793 { 794 AcpiGbl_RootTableList.Tables[TableIndex].Flags |= 795 ACPI_TABLE_IS_LOADED; 796 } 797 else 798 { 799 AcpiGbl_RootTableList.Tables[TableIndex].Flags &= 800 ~ACPI_TABLE_IS_LOADED; 801 } 802 } 803 804 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 805 } 806 807