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_BIOS_ERROR ((AE_INFO, 161 "Table has invalid signature [%4.4s] (0x%8.8X), " 162 "must be SSDT or OEMx", 163 AcpiUtValidAcpiName (*(UINT32 *) TableDesc->Pointer->Signature) ? 164 TableDesc->Pointer->Signature : "????", 165 *(UINT32 *) TableDesc->Pointer->Signature)); 166 167 return_ACPI_STATUS (AE_BAD_SIGNATURE); 168 } 169 170 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 171 172 /* Check if table is already registered */ 173 174 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) 175 { 176 if (!AcpiGbl_RootTableList.Tables[i].Pointer) 177 { 178 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); 179 if (ACPI_FAILURE (Status) || 180 !AcpiGbl_RootTableList.Tables[i].Pointer) 181 { 182 continue; 183 } 184 } 185 186 /* 187 * Check for a table match on the entire table length, 188 * not just the header. 189 */ 190 if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length) 191 { 192 continue; 193 } 194 195 if (ACPI_MEMCMP (TableDesc->Pointer, 196 AcpiGbl_RootTableList.Tables[i].Pointer, 197 AcpiGbl_RootTableList.Tables[i].Length)) 198 { 199 continue; 200 } 201 202 /* 203 * Note: the current mechanism does not unregister a table if it is 204 * dynamically unloaded. The related namespace entries are deleted, 205 * but the table remains in the root table list. 206 * 207 * The assumption here is that the number of different tables that 208 * will be loaded is actually small, and there is minimal overhead 209 * in just keeping the table in case it is needed again. 210 * 211 * If this assumption changes in the future (perhaps on large 212 * machines with many table load/unload operations), tables will 213 * need to be unregistered when they are unloaded, and slots in the 214 * root table list should be reused when empty. 215 */ 216 217 /* 218 * Table is already registered. 219 * We can delete the table that was passed as a parameter. 220 */ 221 AcpiTbDeleteTable (TableDesc); 222 *TableIndex = i; 223 224 if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED) 225 { 226 /* Table is still loaded, this is an error */ 227 228 Status = AE_ALREADY_EXISTS; 229 goto Release; 230 } 231 else 232 { 233 /* Table was unloaded, allow it to be reloaded */ 234 235 TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer; 236 TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address; 237 Status = AE_OK; 238 goto PrintHeader; 239 } 240 } 241 242 /* 243 * ACPI Table Override: 244 * Allow the host to override dynamically loaded tables. 245 * NOTE: the table is fully mapped at this point, and the mapping will 246 * be deleted by TbTableOverride if the table is actually overridden. 247 */ 248 (void) AcpiTbTableOverride (TableDesc->Pointer, TableDesc); 249 250 /* Add the table to the global root table list */ 251 252 Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer, 253 TableDesc->Length, TableDesc->Flags, TableIndex); 254 if (ACPI_FAILURE (Status)) 255 { 256 goto Release; 257 } 258 259 PrintHeader: 260 AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer); 261 262 Release: 263 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 264 return_ACPI_STATUS (Status); 265 } 266 267 268 /******************************************************************************* 269 * 270 * FUNCTION: AcpiTbTableOverride 271 * 272 * PARAMETERS: TableHeader - Header for the original table 273 * TableDesc - Table descriptor initialized for the 274 * original table. May or may not be mapped. 275 * 276 * RETURN: Pointer to the entire new table. NULL if table not overridden. 277 * If overridden, installs the new table within the input table 278 * descriptor. 279 * 280 * DESCRIPTION: Attempt table override by calling the OSL override functions. 281 * Note: If the table is overridden, then the entire new table 282 * is mapped and returned by this function. 283 * 284 ******************************************************************************/ 285 286 ACPI_TABLE_HEADER * 287 AcpiTbTableOverride ( 288 ACPI_TABLE_HEADER *TableHeader, 289 ACPI_TABLE_DESC *TableDesc) 290 { 291 ACPI_STATUS Status; 292 ACPI_TABLE_HEADER *NewTable = NULL; 293 ACPI_PHYSICAL_ADDRESS NewAddress = 0; 294 UINT32 NewTableLength = 0; 295 UINT8 NewFlags; 296 char *OverrideType; 297 298 299 /* (1) Attempt logical override (returns a logical address) */ 300 301 Status = AcpiOsTableOverride (TableHeader, &NewTable); 302 if (ACPI_SUCCESS (Status) && NewTable) 303 { 304 NewAddress = ACPI_PTR_TO_PHYSADDR (NewTable); 305 NewTableLength = NewTable->Length; 306 NewFlags = ACPI_TABLE_ORIGIN_OVERRIDE; 307 OverrideType = "Logical"; 308 goto FinishOverride; 309 } 310 311 /* (2) Attempt physical override (returns a physical address) */ 312 313 Status = AcpiOsPhysicalTableOverride (TableHeader, 314 &NewAddress, &NewTableLength); 315 if (ACPI_SUCCESS (Status) && NewAddress && NewTableLength) 316 { 317 /* Map the entire new table */ 318 319 NewTable = AcpiOsMapMemory (NewAddress, NewTableLength); 320 if (!NewTable) 321 { 322 ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY, 323 "%4.4s %p Attempted physical table override failed", 324 TableHeader->Signature, 325 ACPI_CAST_PTR (void, TableDesc->Address))); 326 return (NULL); 327 } 328 329 OverrideType = "Physical"; 330 NewFlags = ACPI_TABLE_ORIGIN_MAPPED; 331 goto FinishOverride; 332 } 333 334 return (NULL); /* There was no override */ 335 336 337 FinishOverride: 338 339 ACPI_INFO ((AE_INFO, 340 "%4.4s %p %s table override, new table: %p", 341 TableHeader->Signature, 342 ACPI_CAST_PTR (void, TableDesc->Address), 343 OverrideType, NewTable)); 344 345 /* We can now unmap/delete the original table (if fully mapped) */ 346 347 AcpiTbDeleteTable (TableDesc); 348 349 /* Setup descriptor for the new table */ 350 351 TableDesc->Address = NewAddress; 352 TableDesc->Pointer = NewTable; 353 TableDesc->Length = NewTableLength; 354 TableDesc->Flags = NewFlags; 355 356 return (NewTable); 357 } 358 359 360 /******************************************************************************* 361 * 362 * FUNCTION: AcpiTbResizeRootTableList 363 * 364 * PARAMETERS: None 365 * 366 * RETURN: Status 367 * 368 * DESCRIPTION: Expand the size of global table array 369 * 370 ******************************************************************************/ 371 372 ACPI_STATUS 373 AcpiTbResizeRootTableList ( 374 void) 375 { 376 ACPI_TABLE_DESC *Tables; 377 378 379 ACPI_FUNCTION_TRACE (TbResizeRootTableList); 380 381 382 /* AllowResize flag is a parameter to AcpiInitializeTables */ 383 384 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE)) 385 { 386 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed")); 387 return_ACPI_STATUS (AE_SUPPORT); 388 } 389 390 /* Increase the Table Array size */ 391 392 Tables = ACPI_ALLOCATE_ZEROED ( 393 ((ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount + 394 ACPI_ROOT_TABLE_SIZE_INCREMENT) * 395 sizeof (ACPI_TABLE_DESC)); 396 if (!Tables) 397 { 398 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array")); 399 return_ACPI_STATUS (AE_NO_MEMORY); 400 } 401 402 /* Copy and free the previous table array */ 403 404 if (AcpiGbl_RootTableList.Tables) 405 { 406 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables, 407 (ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount * sizeof (ACPI_TABLE_DESC)); 408 409 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 410 { 411 ACPI_FREE (AcpiGbl_RootTableList.Tables); 412 } 413 } 414 415 AcpiGbl_RootTableList.Tables = Tables; 416 AcpiGbl_RootTableList.MaxTableCount += ACPI_ROOT_TABLE_SIZE_INCREMENT; 417 AcpiGbl_RootTableList.Flags |= (UINT8) ACPI_ROOT_ORIGIN_ALLOCATED; 418 419 return_ACPI_STATUS (AE_OK); 420 } 421 422 423 /******************************************************************************* 424 * 425 * FUNCTION: AcpiTbStoreTable 426 * 427 * PARAMETERS: Address - Table address 428 * Table - Table header 429 * Length - Table length 430 * Flags - flags 431 * 432 * RETURN: Status and table index. 433 * 434 * DESCRIPTION: Add an ACPI table to the global table list 435 * 436 ******************************************************************************/ 437 438 ACPI_STATUS 439 AcpiTbStoreTable ( 440 ACPI_PHYSICAL_ADDRESS Address, 441 ACPI_TABLE_HEADER *Table, 442 UINT32 Length, 443 UINT8 Flags, 444 UINT32 *TableIndex) 445 { 446 ACPI_STATUS Status; 447 ACPI_TABLE_DESC *NewTable; 448 449 450 /* Ensure that there is room for the table in the Root Table List */ 451 452 if (AcpiGbl_RootTableList.CurrentTableCount >= 453 AcpiGbl_RootTableList.MaxTableCount) 454 { 455 Status = AcpiTbResizeRootTableList(); 456 if (ACPI_FAILURE (Status)) 457 { 458 return (Status); 459 } 460 } 461 462 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount]; 463 464 /* Initialize added table */ 465 466 NewTable->Address = Address; 467 NewTable->Pointer = Table; 468 NewTable->Length = Length; 469 NewTable->OwnerId = 0; 470 NewTable->Flags = Flags; 471 472 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature); 473 474 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount; 475 AcpiGbl_RootTableList.CurrentTableCount++; 476 return (AE_OK); 477 } 478 479 480 /******************************************************************************* 481 * 482 * FUNCTION: AcpiTbDeleteTable 483 * 484 * PARAMETERS: TableIndex - Table index 485 * 486 * RETURN: None 487 * 488 * DESCRIPTION: Delete one internal ACPI table 489 * 490 ******************************************************************************/ 491 492 void 493 AcpiTbDeleteTable ( 494 ACPI_TABLE_DESC *TableDesc) 495 { 496 497 /* Table must be mapped or allocated */ 498 499 if (!TableDesc->Pointer) 500 { 501 return; 502 } 503 504 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) 505 { 506 case ACPI_TABLE_ORIGIN_MAPPED: 507 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length); 508 break; 509 510 case ACPI_TABLE_ORIGIN_ALLOCATED: 511 ACPI_FREE (TableDesc->Pointer); 512 break; 513 514 /* Not mapped or allocated, there is nothing we can do */ 515 516 default: 517 return; 518 } 519 520 TableDesc->Pointer = NULL; 521 } 522 523 524 /******************************************************************************* 525 * 526 * FUNCTION: AcpiTbTerminate 527 * 528 * PARAMETERS: None 529 * 530 * RETURN: None 531 * 532 * DESCRIPTION: Delete all internal ACPI tables 533 * 534 ******************************************************************************/ 535 536 void 537 AcpiTbTerminate ( 538 void) 539 { 540 UINT32 i; 541 542 543 ACPI_FUNCTION_TRACE (TbTerminate); 544 545 546 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 547 548 /* Delete the individual tables */ 549 550 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) 551 { 552 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]); 553 } 554 555 /* 556 * Delete the root table array if allocated locally. Array cannot be 557 * mapped, so we don't need to check for that flag. 558 */ 559 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 560 { 561 ACPI_FREE (AcpiGbl_RootTableList.Tables); 562 } 563 564 AcpiGbl_RootTableList.Tables = NULL; 565 AcpiGbl_RootTableList.Flags = 0; 566 AcpiGbl_RootTableList.CurrentTableCount = 0; 567 568 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n")); 569 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 570 } 571 572 573 /******************************************************************************* 574 * 575 * FUNCTION: AcpiTbDeleteNamespaceByOwner 576 * 577 * PARAMETERS: TableIndex - Table index 578 * 579 * RETURN: Status 580 * 581 * DESCRIPTION: Delete all namespace objects created when this table was loaded. 582 * 583 ******************************************************************************/ 584 585 ACPI_STATUS 586 AcpiTbDeleteNamespaceByOwner ( 587 UINT32 TableIndex) 588 { 589 ACPI_OWNER_ID OwnerId; 590 ACPI_STATUS Status; 591 592 593 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner); 594 595 596 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES); 597 if (ACPI_FAILURE (Status)) 598 { 599 return_ACPI_STATUS (Status); 600 } 601 602 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) 603 { 604 /* The table index does not exist */ 605 606 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 607 return_ACPI_STATUS (AE_NOT_EXIST); 608 } 609 610 /* Get the owner ID for this table, used to delete namespace nodes */ 611 612 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; 613 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 614 615 /* 616 * Need to acquire the namespace writer lock to prevent interference 617 * with any concurrent namespace walks. The interpreter must be 618 * released during the deletion since the acquisition of the deletion 619 * lock may block, and also since the execution of a namespace walk 620 * must be allowed to use the interpreter. 621 */ 622 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER); 623 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock); 624 625 AcpiNsDeleteNamespaceByOwner (OwnerId); 626 if (ACPI_FAILURE (Status)) 627 { 628 return_ACPI_STATUS (Status); 629 } 630 631 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock); 632 633 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER); 634 return_ACPI_STATUS (Status); 635 } 636 637 638 /******************************************************************************* 639 * 640 * FUNCTION: AcpiTbAllocateOwnerId 641 * 642 * PARAMETERS: TableIndex - Table index 643 * 644 * RETURN: Status 645 * 646 * DESCRIPTION: Allocates OwnerId in TableDesc 647 * 648 ******************************************************************************/ 649 650 ACPI_STATUS 651 AcpiTbAllocateOwnerId ( 652 UINT32 TableIndex) 653 { 654 ACPI_STATUS Status = AE_BAD_PARAMETER; 655 656 657 ACPI_FUNCTION_TRACE (TbAllocateOwnerId); 658 659 660 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 661 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 662 { 663 Status = AcpiUtAllocateOwnerId 664 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); 665 } 666 667 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 668 return_ACPI_STATUS (Status); 669 } 670 671 672 /******************************************************************************* 673 * 674 * FUNCTION: AcpiTbReleaseOwnerId 675 * 676 * PARAMETERS: TableIndex - Table index 677 * 678 * RETURN: Status 679 * 680 * DESCRIPTION: Releases OwnerId in TableDesc 681 * 682 ******************************************************************************/ 683 684 ACPI_STATUS 685 AcpiTbReleaseOwnerId ( 686 UINT32 TableIndex) 687 { 688 ACPI_STATUS Status = AE_BAD_PARAMETER; 689 690 691 ACPI_FUNCTION_TRACE (TbReleaseOwnerId); 692 693 694 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 695 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 696 { 697 AcpiUtReleaseOwnerId ( 698 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); 699 Status = AE_OK; 700 } 701 702 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 703 return_ACPI_STATUS (Status); 704 } 705 706 707 /******************************************************************************* 708 * 709 * FUNCTION: AcpiTbGetOwnerId 710 * 711 * PARAMETERS: TableIndex - Table index 712 * OwnerId - Where the table OwnerId is returned 713 * 714 * RETURN: Status 715 * 716 * DESCRIPTION: returns OwnerId for the ACPI table 717 * 718 ******************************************************************************/ 719 720 ACPI_STATUS 721 AcpiTbGetOwnerId ( 722 UINT32 TableIndex, 723 ACPI_OWNER_ID *OwnerId) 724 { 725 ACPI_STATUS Status = AE_BAD_PARAMETER; 726 727 728 ACPI_FUNCTION_TRACE (TbGetOwnerId); 729 730 731 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 732 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 733 { 734 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; 735 Status = AE_OK; 736 } 737 738 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 739 return_ACPI_STATUS (Status); 740 } 741 742 743 /******************************************************************************* 744 * 745 * FUNCTION: AcpiTbIsTableLoaded 746 * 747 * PARAMETERS: TableIndex - Table index 748 * 749 * RETURN: Table Loaded Flag 750 * 751 ******************************************************************************/ 752 753 BOOLEAN 754 AcpiTbIsTableLoaded ( 755 UINT32 TableIndex) 756 { 757 BOOLEAN IsLoaded = FALSE; 758 759 760 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 761 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 762 { 763 IsLoaded = (BOOLEAN) 764 (AcpiGbl_RootTableList.Tables[TableIndex].Flags & 765 ACPI_TABLE_IS_LOADED); 766 } 767 768 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 769 return (IsLoaded); 770 } 771 772 773 /******************************************************************************* 774 * 775 * FUNCTION: AcpiTbSetTableLoadedFlag 776 * 777 * PARAMETERS: TableIndex - Table index 778 * IsLoaded - TRUE if table is loaded, FALSE otherwise 779 * 780 * RETURN: None 781 * 782 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. 783 * 784 ******************************************************************************/ 785 786 void 787 AcpiTbSetTableLoadedFlag ( 788 UINT32 TableIndex, 789 BOOLEAN IsLoaded) 790 { 791 792 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 793 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 794 { 795 if (IsLoaded) 796 { 797 AcpiGbl_RootTableList.Tables[TableIndex].Flags |= 798 ACPI_TABLE_IS_LOADED; 799 } 800 else 801 { 802 AcpiGbl_RootTableList.Tables[TableIndex].Flags &= 803 ~ACPI_TABLE_IS_LOADED; 804 } 805 } 806 807 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 808 } 809 810