1 /****************************************************************************** 2 * 3 * Module Name: tbinstal - ACPI table installation and removal 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2013, 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 (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 UINT32 TableCount; 378 379 380 ACPI_FUNCTION_TRACE (TbResizeRootTableList); 381 382 383 /* AllowResize flag is a parameter to AcpiInitializeTables */ 384 385 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE)) 386 { 387 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed")); 388 return_ACPI_STATUS (AE_SUPPORT); 389 } 390 391 /* Increase the Table Array size */ 392 393 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 394 { 395 TableCount = AcpiGbl_RootTableList.MaxTableCount; 396 } 397 else 398 { 399 TableCount = AcpiGbl_RootTableList.CurrentTableCount; 400 } 401 402 Tables = ACPI_ALLOCATE_ZEROED ( 403 ((ACPI_SIZE) TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT) * 404 sizeof (ACPI_TABLE_DESC)); 405 if (!Tables) 406 { 407 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array")); 408 return_ACPI_STATUS (AE_NO_MEMORY); 409 } 410 411 /* Copy and free the previous table array */ 412 413 if (AcpiGbl_RootTableList.Tables) 414 { 415 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables, 416 (ACPI_SIZE) TableCount * sizeof (ACPI_TABLE_DESC)); 417 418 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 419 { 420 ACPI_FREE (AcpiGbl_RootTableList.Tables); 421 } 422 } 423 424 AcpiGbl_RootTableList.Tables = Tables; 425 AcpiGbl_RootTableList.MaxTableCount = 426 TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT; 427 AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ORIGIN_ALLOCATED; 428 429 return_ACPI_STATUS (AE_OK); 430 } 431 432 433 /******************************************************************************* 434 * 435 * FUNCTION: AcpiTbStoreTable 436 * 437 * PARAMETERS: Address - Table address 438 * Table - Table header 439 * Length - Table length 440 * Flags - flags 441 * 442 * RETURN: Status and table index. 443 * 444 * DESCRIPTION: Add an ACPI table to the global table list 445 * 446 ******************************************************************************/ 447 448 ACPI_STATUS 449 AcpiTbStoreTable ( 450 ACPI_PHYSICAL_ADDRESS Address, 451 ACPI_TABLE_HEADER *Table, 452 UINT32 Length, 453 UINT8 Flags, 454 UINT32 *TableIndex) 455 { 456 ACPI_STATUS Status; 457 ACPI_TABLE_DESC *NewTable; 458 459 460 /* Ensure that there is room for the table in the Root Table List */ 461 462 if (AcpiGbl_RootTableList.CurrentTableCount >= 463 AcpiGbl_RootTableList.MaxTableCount) 464 { 465 Status = AcpiTbResizeRootTableList(); 466 if (ACPI_FAILURE (Status)) 467 { 468 return (Status); 469 } 470 } 471 472 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount]; 473 474 /* Initialize added table */ 475 476 NewTable->Address = Address; 477 NewTable->Pointer = Table; 478 NewTable->Length = Length; 479 NewTable->OwnerId = 0; 480 NewTable->Flags = Flags; 481 482 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature); 483 484 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount; 485 AcpiGbl_RootTableList.CurrentTableCount++; 486 return (AE_OK); 487 } 488 489 490 /******************************************************************************* 491 * 492 * FUNCTION: AcpiTbDeleteTable 493 * 494 * PARAMETERS: TableIndex - Table index 495 * 496 * RETURN: None 497 * 498 * DESCRIPTION: Delete one internal ACPI table 499 * 500 ******************************************************************************/ 501 502 void 503 AcpiTbDeleteTable ( 504 ACPI_TABLE_DESC *TableDesc) 505 { 506 507 /* Table must be mapped or allocated */ 508 509 if (!TableDesc->Pointer) 510 { 511 return; 512 } 513 514 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) 515 { 516 case ACPI_TABLE_ORIGIN_MAPPED: 517 518 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length); 519 break; 520 521 case ACPI_TABLE_ORIGIN_ALLOCATED: 522 523 ACPI_FREE (TableDesc->Pointer); 524 break; 525 526 /* Not mapped or allocated, there is nothing we can do */ 527 528 default: 529 530 return; 531 } 532 533 TableDesc->Pointer = NULL; 534 } 535 536 537 /******************************************************************************* 538 * 539 * FUNCTION: AcpiTbTerminate 540 * 541 * PARAMETERS: None 542 * 543 * RETURN: None 544 * 545 * DESCRIPTION: Delete all internal ACPI tables 546 * 547 ******************************************************************************/ 548 549 void 550 AcpiTbTerminate ( 551 void) 552 { 553 UINT32 i; 554 555 556 ACPI_FUNCTION_TRACE (TbTerminate); 557 558 559 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 560 561 /* Delete the individual tables */ 562 563 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) 564 { 565 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]); 566 } 567 568 /* 569 * Delete the root table array if allocated locally. Array cannot be 570 * mapped, so we don't need to check for that flag. 571 */ 572 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 573 { 574 ACPI_FREE (AcpiGbl_RootTableList.Tables); 575 } 576 577 AcpiGbl_RootTableList.Tables = NULL; 578 AcpiGbl_RootTableList.Flags = 0; 579 AcpiGbl_RootTableList.CurrentTableCount = 0; 580 581 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n")); 582 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 583 584 return_VOID; 585 } 586 587 588 /******************************************************************************* 589 * 590 * FUNCTION: AcpiTbDeleteNamespaceByOwner 591 * 592 * PARAMETERS: TableIndex - Table index 593 * 594 * RETURN: Status 595 * 596 * DESCRIPTION: Delete all namespace objects created when this table was loaded. 597 * 598 ******************************************************************************/ 599 600 ACPI_STATUS 601 AcpiTbDeleteNamespaceByOwner ( 602 UINT32 TableIndex) 603 { 604 ACPI_OWNER_ID OwnerId; 605 ACPI_STATUS Status; 606 607 608 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner); 609 610 611 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES); 612 if (ACPI_FAILURE (Status)) 613 { 614 return_ACPI_STATUS (Status); 615 } 616 617 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) 618 { 619 /* The table index does not exist */ 620 621 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 622 return_ACPI_STATUS (AE_NOT_EXIST); 623 } 624 625 /* Get the owner ID for this table, used to delete namespace nodes */ 626 627 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; 628 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 629 630 /* 631 * Need to acquire the namespace writer lock to prevent interference 632 * with any concurrent namespace walks. The interpreter must be 633 * released during the deletion since the acquisition of the deletion 634 * lock may block, and also since the execution of a namespace walk 635 * must be allowed to use the interpreter. 636 */ 637 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER); 638 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock); 639 640 AcpiNsDeleteNamespaceByOwner (OwnerId); 641 if (ACPI_FAILURE (Status)) 642 { 643 return_ACPI_STATUS (Status); 644 } 645 646 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock); 647 648 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER); 649 return_ACPI_STATUS (Status); 650 } 651 652 653 /******************************************************************************* 654 * 655 * FUNCTION: AcpiTbAllocateOwnerId 656 * 657 * PARAMETERS: TableIndex - Table index 658 * 659 * RETURN: Status 660 * 661 * DESCRIPTION: Allocates OwnerId in TableDesc 662 * 663 ******************************************************************************/ 664 665 ACPI_STATUS 666 AcpiTbAllocateOwnerId ( 667 UINT32 TableIndex) 668 { 669 ACPI_STATUS Status = AE_BAD_PARAMETER; 670 671 672 ACPI_FUNCTION_TRACE (TbAllocateOwnerId); 673 674 675 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 676 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 677 { 678 Status = AcpiUtAllocateOwnerId 679 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); 680 } 681 682 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 683 return_ACPI_STATUS (Status); 684 } 685 686 687 /******************************************************************************* 688 * 689 * FUNCTION: AcpiTbReleaseOwnerId 690 * 691 * PARAMETERS: TableIndex - Table index 692 * 693 * RETURN: Status 694 * 695 * DESCRIPTION: Releases OwnerId in TableDesc 696 * 697 ******************************************************************************/ 698 699 ACPI_STATUS 700 AcpiTbReleaseOwnerId ( 701 UINT32 TableIndex) 702 { 703 ACPI_STATUS Status = AE_BAD_PARAMETER; 704 705 706 ACPI_FUNCTION_TRACE (TbReleaseOwnerId); 707 708 709 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 710 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 711 { 712 AcpiUtReleaseOwnerId ( 713 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); 714 Status = AE_OK; 715 } 716 717 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 718 return_ACPI_STATUS (Status); 719 } 720 721 722 /******************************************************************************* 723 * 724 * FUNCTION: AcpiTbGetOwnerId 725 * 726 * PARAMETERS: TableIndex - Table index 727 * OwnerId - Where the table OwnerId is returned 728 * 729 * RETURN: Status 730 * 731 * DESCRIPTION: returns OwnerId for the ACPI table 732 * 733 ******************************************************************************/ 734 735 ACPI_STATUS 736 AcpiTbGetOwnerId ( 737 UINT32 TableIndex, 738 ACPI_OWNER_ID *OwnerId) 739 { 740 ACPI_STATUS Status = AE_BAD_PARAMETER; 741 742 743 ACPI_FUNCTION_TRACE (TbGetOwnerId); 744 745 746 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 747 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 748 { 749 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; 750 Status = AE_OK; 751 } 752 753 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 754 return_ACPI_STATUS (Status); 755 } 756 757 758 /******************************************************************************* 759 * 760 * FUNCTION: AcpiTbIsTableLoaded 761 * 762 * PARAMETERS: TableIndex - Table index 763 * 764 * RETURN: Table Loaded Flag 765 * 766 ******************************************************************************/ 767 768 BOOLEAN 769 AcpiTbIsTableLoaded ( 770 UINT32 TableIndex) 771 { 772 BOOLEAN IsLoaded = FALSE; 773 774 775 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 776 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 777 { 778 IsLoaded = (BOOLEAN) 779 (AcpiGbl_RootTableList.Tables[TableIndex].Flags & 780 ACPI_TABLE_IS_LOADED); 781 } 782 783 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 784 return (IsLoaded); 785 } 786 787 788 /******************************************************************************* 789 * 790 * FUNCTION: AcpiTbSetTableLoadedFlag 791 * 792 * PARAMETERS: TableIndex - Table index 793 * IsLoaded - TRUE if table is loaded, FALSE otherwise 794 * 795 * RETURN: None 796 * 797 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. 798 * 799 ******************************************************************************/ 800 801 void 802 AcpiTbSetTableLoadedFlag ( 803 UINT32 TableIndex, 804 BOOLEAN IsLoaded) 805 { 806 807 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 808 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) 809 { 810 if (IsLoaded) 811 { 812 AcpiGbl_RootTableList.Tables[TableIndex].Flags |= 813 ACPI_TABLE_IS_LOADED; 814 } 815 else 816 { 817 AcpiGbl_RootTableList.Tables[TableIndex].Flags &= 818 ~ACPI_TABLE_IS_LOADED; 819 } 820 } 821 822 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 823 } 824