reactos/drivers/bus/acpi/acpica/tables/tbinstal.c

   1 /******************************************************************************
   2  *
   3  * Module Name: tbinstal - ACPI table installation and removal
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp.
  12  * All rights reserved.
  13  *
  14  * 2. License
  15  *
  16  * 2.1. This is your license from Intel Corp. under its intellectual property
  17  * rights.  You may have additional license terms from the party that provided
  18  * you this software, covering your right to use that party's intellectual
  19  * property rights.
  20  *
  21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22  * copy of the source code appearing in this file ("Covered Code") an
  23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25  * make derivatives, distribute, use and display any portion of the Covered
  26  * Code in any form, with the right to sublicense such rights; and
  27  *
  28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29  * license (with the right to sublicense), under only those claims of Intel
  30  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31  * offer to sell, and import the Covered Code and derivative works thereof
  32  * solely to the minimum extent necessary to exercise the above copyright
  33  * license, and in no event shall the patent license extend to any additions
  34  * to or modifications of the Original Intel Code.  No other license or right
  35  * is granted directly or by implication, estoppel or otherwise;
  36  *
  37  * The above copyright and patent license is granted only if the following
  38  * conditions are met:
  39  *
  40  * 3. Conditions
  41  *
  42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43  * Redistribution of source code of any substantial portion of the Covered
  44  * Code or modification with rights to further distribute source must include
  45  * the above Copyright Notice, the above License, this list of Conditions,
  46  * and the following Disclaimer and Export Compliance provision.  In addition,
  47  * Licensee must cause all Covered Code to which Licensee contributes to
  48  * contain a file documenting the changes Licensee made to create that Covered
  49  * Code and the date of any change.  Licensee must include in that file the
  50  * documentation of any changes made by any predecessor Licensee.  Licensee
  51  * must include a prominent statement that the modification is derived,
  52  * directly or indirectly, from Original Intel Code.
  53  *
  54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55  * Redistribution of source code of any substantial portion of the Covered
  56  * Code or modification without rights to further distribute source must
  57  * include the following Disclaimer and Export Compliance provision in the
  58  * documentation and/or other materials provided with distribution.  In
  59  * addition, Licensee may not authorize further sublicense of source of any
  60  * portion of the Covered Code, and must include terms to the effect that the
  61  * license from Licensee to its licensee is limited to the intellectual
  62  * property embodied in the software Licensee provides to its licensee, and
  63  * not to intellectual property embodied in modifications its licensee may
  64  * make.
  65  *
  66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67  * substantial portion of the Covered Code or modification must reproduce the
  68  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69  * provision in the documentation and/or other materials provided with the
  70  * distribution.
  71  *
  72  * 3.4. Intel retains all right, title, and interest in and to the Original
  73  * Intel Code.
  74  *
  75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77  * other dealings in products derived from or relating to the Covered Code
  78  * without prior written authorization from Intel.
  79  *
  80  * 4. Disclaimer and Export Compliance
  81  *
  82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  85  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  86  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  88  * PARTICULAR PURPOSE.
  89  *
  90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  97  * LIMITED REMEDY.
  98  *
  99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 100  * software or system incorporating such software without first obtaining any
 101  * required license or other approval from the U. S. Department of Commerce or
 102  * any other agency or department of the United States Government.  In the
 103  * event Licensee exports any such software from the United States or
 104  * re-exports any such software from a foreign destination, Licensee shall
 105  * ensure that the distribution and export/re-export of the software is in
 106  * compliance with all laws, regulations, orders, or other restrictions of the
 107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 108  * any of its subsidiaries will export/re-export any technical data, process,
 109  * software, or service, directly or indirectly, to any country for which the
 110  * United States government or any agency thereof requires an export license,
 111  * other governmental approval, or letter of assurance, without first obtaining
 112  * such license, approval or letter.
 113  *
 114  *****************************************************************************/
 115
 116
 117 #define __TBINSTAL_C__
 118
 119 #include "acpi.h"
 120 #include "accommon.h"
 121 #include "acnamesp.h"
 122 #include "actables.h"
 123
 124
 125 #define _COMPONENT          ACPI_TABLES
 126         ACPI_MODULE_NAME    ("tbinstal")
 127
 128
 129 /******************************************************************************
 130  *
 131  * FUNCTION:    AcpiTbVerifyTable
 132  *
 133  * PARAMETERS:  TableDesc           - table
 134  *
 135  * RETURN:      Status
 136  *
 137  * DESCRIPTION: this function is called to verify and map table
 138  *
 139  *****************************************************************************/
 140
 141 ACPI_STATUS
 142 AcpiTbVerifyTable (
 143     ACPI_TABLE_DESC         *TableDesc)
 144 {
 145     ACPI_STATUS             Status = AE_OK;
 146
 147
 148     ACPI_FUNCTION_TRACE (TbVerifyTable);
 149
 150
 151     /* Map the table if necessary */
 152
 153     if (!TableDesc->Pointer)
 154     {
 155         if ((TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) ==
 156             ACPI_TABLE_ORIGIN_MAPPED)
 157         {
 158             TableDesc->Pointer = AcpiOsMapMemory (
 159                 TableDesc->Address, TableDesc->Length);
 160         }
 161
 162         if (!TableDesc->Pointer)
 163         {
 164             return_ACPI_STATUS (AE_NO_MEMORY);
 165         }
 166     }
 167
 168     /* FACS is the odd table, has no standard ACPI header and no checksum */
 169
 170     if (!ACPI_COMPARE_NAME (&TableDesc->Signature, ACPI_SIG_FACS))
 171     {
 172         /* Always calculate checksum, ignore bad checksum if requested */
 173
 174         Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
 175     }
 176
 177     return_ACPI_STATUS (Status);
 178 }
 179
 180
 181 /*******************************************************************************
 182  *
 183  * FUNCTION:    AcpiTbAddTable
 184  *
 185  * PARAMETERS:  TableDesc           - Table descriptor
 186  *              TableIndex          - Where the table index is returned
 187  *
 188  * RETURN:      Status
 189  *
 190  * DESCRIPTION: This function is called to add an ACPI table. It is used to
 191  *              dynamically load tables via the Load and LoadTable AML
 192  *              operators.
 193  *
 194  ******************************************************************************/
 195
 196 ACPI_STATUS
 197 AcpiTbAddTable (
 198     ACPI_TABLE_DESC         *TableDesc,
 199     UINT32                  *TableIndex)
 200 {
 201     UINT32                  i;
 202     ACPI_STATUS             Status = AE_OK;
 203     ACPI_TABLE_HEADER       *OverrideTable = NULL;
 204
 205
 206     ACPI_FUNCTION_TRACE (TbAddTable);
 207
 208
 209     if (!TableDesc->Pointer)
 210     {
 211         Status = AcpiTbVerifyTable (TableDesc);
 212         if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
 213         {
 214             return_ACPI_STATUS (Status);
 215         }
 216     }
 217
 218     /*
 219      * Originally, we checked the table signature for "SSDT" or "PSDT" here.
 220      * Next, we added support for OEMx tables, signature "OEM".
 221      * Valid tables were encountered with a null signature, so we've just
 222      * given up on validating the signature, since it seems to be a waste
 223      * of code. The original code was removed (05/2008).
 224      */
 225
 226     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 227
 228     /* Check if table is already registered */
 229
 230     for (i = 0; i < AcpiGbl_RootTableList.Count; ++i)
 231     {
 232         if (!AcpiGbl_RootTableList.Tables[i].Pointer)
 233         {
 234             Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
 235             if (ACPI_FAILURE (Status) ||
 236                 !AcpiGbl_RootTableList.Tables[i].Pointer)
 237             {
 238                 continue;
 239             }
 240         }
 241
 242         /*
 243          * Check for a table match on the entire table length,
 244          * not just the header.
 245          */
 246         if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
 247         {
 248             continue;
 249         }
 250
 251         if (ACPI_MEMCMP (TableDesc->Pointer,
 252                 AcpiGbl_RootTableList.Tables[i].Pointer,
 253                 AcpiGbl_RootTableList.Tables[i].Length))
 254         {
 255             continue;
 256         }
 257
 258         /*
 259          * Note: the current mechanism does not unregister a table if it is
 260          * dynamically unloaded. The related namespace entries are deleted,
 261          * but the table remains in the root table list.
 262          *
 263          * The assumption here is that the number of different tables that
 264          * will be loaded is actually small, and there is minimal overhead
 265          * in just keeping the table in case it is needed again.
 266          *
 267          * If this assumption changes in the future (perhaps on large
 268          * machines with many table load/unload operations), tables will
 269          * need to be unregistered when they are unloaded, and slots in the
 270          * root table list should be reused when empty.
 271          */
 272
 273         /*
 274          * Table is already registered.
 275          * We can delete the table that was passed as a parameter.
 276          */
 277         AcpiTbDeleteTable (TableDesc);
 278         *TableIndex = i;
 279
 280         if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED)
 281         {
 282             /* Table is still loaded, this is an error */
 283
 284             Status = AE_ALREADY_EXISTS;
 285             goto Release;
 286         }
 287         else
 288         {
 289             /* Table was unloaded, allow it to be reloaded */
 290
 291             TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer;
 292             TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address;
 293             Status = AE_OK;
 294             goto PrintHeader;
 295         }
 296     }
 297
 298     /*
 299      * ACPI Table Override:
 300      * Allow the host to override dynamically loaded tables.
 301      */
 302     Status = AcpiOsTableOverride (TableDesc->Pointer, &OverrideTable);
 303     if (ACPI_SUCCESS (Status) && OverrideTable)
 304     {
 305         ACPI_INFO ((AE_INFO,
 306             "%4.4s @ 0x%p Table override, replaced with:",
 307             TableDesc->Pointer->Signature,
 308             ACPI_CAST_PTR (void, TableDesc->Address)));
 309
 310         /* We can delete the table that was passed as a parameter */
 311
 312         AcpiTbDeleteTable (TableDesc);
 313
 314         /* Setup descriptor for the new table */
 315
 316         TableDesc->Address = ACPI_PTR_TO_PHYSADDR (OverrideTable);
 317         TableDesc->Pointer = OverrideTable;
 318         TableDesc->Length = OverrideTable->Length;
 319         TableDesc->Flags = ACPI_TABLE_ORIGIN_OVERRIDE;
 320     }
 321
 322     /* Add the table to the global root table list */
 323
 324     Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
 325                 TableDesc->Length, TableDesc->Flags, TableIndex);
 326     if (ACPI_FAILURE (Status))
 327     {
 328         goto Release;
 329     }
 330
 331 PrintHeader:
 332     AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
 333
 334 Release:
 335     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 336     return_ACPI_STATUS (Status);
 337 }
 338
 339
 340 /*******************************************************************************
 341  *
 342  * FUNCTION:    AcpiTbResizeRootTableList
 343  *
 344  * PARAMETERS:  None
 345  *
 346  * RETURN:      Status
 347  *
 348  * DESCRIPTION: Expand the size of global table array
 349  *
 350  ******************************************************************************/
 351
 352 ACPI_STATUS
 353 AcpiTbResizeRootTableList (
 354     void)
 355 {
 356     ACPI_TABLE_DESC         *Tables;
 357
 358
 359     ACPI_FUNCTION_TRACE (TbResizeRootTableList);
 360
 361
 362     /* AllowResize flag is a parameter to AcpiInitializeTables */
 363
 364     if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE))
 365     {
 366         ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed"));
 367         return_ACPI_STATUS (AE_SUPPORT);
 368     }
 369
 370     /* Increase the Table Array size */
 371
 372     Tables = ACPI_ALLOCATE_ZEROED (
 373         ((ACPI_SIZE) AcpiGbl_RootTableList.Size +
 374             ACPI_ROOT_TABLE_SIZE_INCREMENT) *
 375         sizeof (ACPI_TABLE_DESC));
 376     if (!Tables)
 377     {
 378         ACPI_ERROR ((AE_INFO, "Could not allocate new root table array"));
 379         return_ACPI_STATUS (AE_NO_MEMORY);
 380     }
 381
 382     /* Copy and free the previous table array */
 383
 384     if (AcpiGbl_RootTableList.Tables)
 385     {
 386         ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables,
 387             (ACPI_SIZE) AcpiGbl_RootTableList.Size * sizeof (ACPI_TABLE_DESC));
 388
 389         if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
 390         {
 391             ACPI_FREE (AcpiGbl_RootTableList.Tables);
 392         }
 393     }
 394
 395     AcpiGbl_RootTableList.Tables = Tables;
 396     AcpiGbl_RootTableList.Size += ACPI_ROOT_TABLE_SIZE_INCREMENT;
 397     AcpiGbl_RootTableList.Flags |= (UINT8) ACPI_ROOT_ORIGIN_ALLOCATED;
 398
 399     return_ACPI_STATUS (AE_OK);
 400 }
 401
 402
 403 /*******************************************************************************
 404  *
 405  * FUNCTION:    AcpiTbStoreTable
 406  *
 407  * PARAMETERS:  Address             - Table address
 408  *              Table               - Table header
 409  *              Length              - Table length
 410  *              Flags               - flags
 411  *
 412  * RETURN:      Status and table index.
 413  *
 414  * DESCRIPTION: Add an ACPI table to the global table list
 415  *
 416  ******************************************************************************/
 417
 418 ACPI_STATUS
 419 AcpiTbStoreTable (
 420     ACPI_PHYSICAL_ADDRESS   Address,
 421     ACPI_TABLE_HEADER       *Table,
 422     UINT32                  Length,
 423     UINT8                   Flags,
 424     UINT32                  *TableIndex)
 425 {
 426     ACPI_STATUS             Status = AE_OK;
 427
 428
 429     /* Ensure that there is room for the table in the Root Table List */
 430
 431     if (AcpiGbl_RootTableList.Count >= AcpiGbl_RootTableList.Size)
 432     {
 433         Status = AcpiTbResizeRootTableList();
 434         if (ACPI_FAILURE (Status))
 435         {
 436             return (Status);
 437         }
 438     }
 439
 440     /* Initialize added table */
 441
 442     AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.Count].Address = Address;
 443     AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.Count].Pointer = Table;
 444     AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.Count].Length = Length;
 445     AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.Count].OwnerId = 0;
 446     AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.Count].Flags = Flags;
 447
 448     ACPI_MOVE_32_TO_32 (
 449         &(AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.Count].Signature),
 450         Table->Signature);
 451
 452     *TableIndex = AcpiGbl_RootTableList.Count;
 453     AcpiGbl_RootTableList.Count++;
 454     return (Status);
 455 }
 456
 457
 458 /*******************************************************************************
 459  *
 460  * FUNCTION:    AcpiTbDeleteTable
 461  *
 462  * PARAMETERS:  TableIndex          - Table index
 463  *
 464  * RETURN:      None
 465  *
 466  * DESCRIPTION: Delete one internal ACPI table
 467  *
 468  ******************************************************************************/
 469
 470 void
 471 AcpiTbDeleteTable (
 472     ACPI_TABLE_DESC         *TableDesc)
 473 {
 474
 475     /* Table must be mapped or allocated */
 476
 477     if (!TableDesc->Pointer)
 478     {
 479         return;
 480     }
 481
 482     switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK)
 483     {
 484     case ACPI_TABLE_ORIGIN_MAPPED:
 485         AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
 486         break;
 487
 488     case ACPI_TABLE_ORIGIN_ALLOCATED:
 489         ACPI_FREE (TableDesc->Pointer);
 490         break;
 491
 492     default:
 493         break;
 494     }
 495
 496     TableDesc->Pointer = NULL;
 497 }
 498
 499
 500 /*******************************************************************************
 501  *
 502  * FUNCTION:    AcpiTbTerminate
 503  *
 504  * PARAMETERS:  None
 505  *
 506  * RETURN:      None
 507  *
 508  * DESCRIPTION: Delete all internal ACPI tables
 509  *
 510  ******************************************************************************/
 511
 512 void
 513 AcpiTbTerminate (
 514     void)
 515 {
 516     UINT32                  i;
 517
 518
 519     ACPI_FUNCTION_TRACE (TbTerminate);
 520
 521
 522     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 523
 524     /* Delete the individual tables */
 525
 526     for (i = 0; i < AcpiGbl_RootTableList.Count; i++)
 527     {
 528         AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]);
 529     }
 530
 531     /*
 532      * Delete the root table array if allocated locally. Array cannot be
 533      * mapped, so we don't need to check for that flag.
 534      */
 535     if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
 536     {
 537         ACPI_FREE (AcpiGbl_RootTableList.Tables);
 538     }
 539
 540     AcpiGbl_RootTableList.Tables = NULL;
 541     AcpiGbl_RootTableList.Flags = 0;
 542     AcpiGbl_RootTableList.Count = 0;
 543
 544     ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));
 545     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 546 }
 547
 548
 549 /*******************************************************************************
 550  *
 551  * FUNCTION:    AcpiTbDeleteNamespaceByOwner
 552  *
 553  * PARAMETERS:  TableIndex          - Table index
 554  *
 555  * RETURN:      Status
 556  *
 557  * DESCRIPTION: Delete all namespace objects created when this table was loaded.
 558  *
 559  ******************************************************************************/
 560
 561 ACPI_STATUS
 562 AcpiTbDeleteNamespaceByOwner (
 563     UINT32                  TableIndex)
 564 {
 565     ACPI_OWNER_ID           OwnerId;
 566     ACPI_STATUS             Status;
 567
 568
 569     ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner);
 570
 571
 572     Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 573     if (ACPI_FAILURE (Status))
 574     {
 575         return_ACPI_STATUS (Status);
 576     }
 577
 578     if (TableIndex >= AcpiGbl_RootTableList.Count)
 579     {
 580         /* The table index does not exist */
 581
 582         (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 583         return_ACPI_STATUS (AE_NOT_EXIST);
 584     }
 585
 586     /* Get the owner ID for this table, used to delete namespace nodes */
 587
 588     OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
 589     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 590
 591     /*
 592      * Need to acquire the namespace writer lock to prevent interference
 593      * with any concurrent namespace walks. The interpreter must be
 594      * released during the deletion since the acquisition of the deletion
 595      * lock may block, and also since the execution of a namespace walk
 596      * must be allowed to use the interpreter.
 597      */
 598     (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
 599     Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock);
 600
 601     AcpiNsDeleteNamespaceByOwner (OwnerId);
 602     if (ACPI_FAILURE (Status))
 603     {
 604         return_ACPI_STATUS (Status);
 605     }
 606
 607     AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock);
 608
 609     Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
 610     return_ACPI_STATUS (Status);
 611 }
 612
 613
 614 /*******************************************************************************
 615  *
 616  * FUNCTION:    AcpiTbAllocateOwnerId
 617  *
 618  * PARAMETERS:  TableIndex          - Table index
 619  *
 620  * RETURN:      Status
 621  *
 622  * DESCRIPTION: Allocates OwnerId in TableDesc
 623  *
 624  ******************************************************************************/
 625
 626 ACPI_STATUS
 627 AcpiTbAllocateOwnerId (
 628     UINT32                  TableIndex)
 629 {
 630     ACPI_STATUS             Status = AE_BAD_PARAMETER;
 631
 632
 633     ACPI_FUNCTION_TRACE (TbAllocateOwnerId);
 634
 635
 636     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 637     if (TableIndex < AcpiGbl_RootTableList.Count)
 638     {
 639         Status = AcpiUtAllocateOwnerId
 640                     (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
 641     }
 642
 643     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 644     return_ACPI_STATUS (Status);
 645 }
 646
 647
 648 /*******************************************************************************
 649  *
 650  * FUNCTION:    AcpiTbReleaseOwnerId
 651  *
 652  * PARAMETERS:  TableIndex          - Table index
 653  *
 654  * RETURN:      Status
 655  *
 656  * DESCRIPTION: Releases OwnerId in TableDesc
 657  *
 658  ******************************************************************************/
 659
 660 ACPI_STATUS
 661 AcpiTbReleaseOwnerId (
 662     UINT32                  TableIndex)
 663 {
 664     ACPI_STATUS             Status = AE_BAD_PARAMETER;
 665
 666
 667     ACPI_FUNCTION_TRACE (TbReleaseOwnerId);
 668
 669
 670     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 671     if (TableIndex < AcpiGbl_RootTableList.Count)
 672     {
 673         AcpiUtReleaseOwnerId (
 674             &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
 675         Status = AE_OK;
 676     }
 677
 678     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 679     return_ACPI_STATUS (Status);
 680 }
 681
 682
 683 /*******************************************************************************
 684  *
 685  * FUNCTION:    AcpiTbGetOwnerId
 686  *
 687  * PARAMETERS:  TableIndex          - Table index
 688  *              OwnerId             - Where the table OwnerId is returned
 689  *
 690  * RETURN:      Status
 691  *
 692  * DESCRIPTION: returns OwnerId for the ACPI table
 693  *
 694  ******************************************************************************/
 695
 696 ACPI_STATUS
 697 AcpiTbGetOwnerId (
 698     UINT32                  TableIndex,
 699     ACPI_OWNER_ID           *OwnerId)
 700 {
 701     ACPI_STATUS             Status = AE_BAD_PARAMETER;
 702
 703
 704     ACPI_FUNCTION_TRACE (TbGetOwnerId);
 705
 706
 707     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 708     if (TableIndex < AcpiGbl_RootTableList.Count)
 709     {
 710         *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
 711         Status = AE_OK;
 712     }
 713
 714     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 715     return_ACPI_STATUS (Status);
 716 }
 717
 718
 719 /*******************************************************************************
 720  *
 721  * FUNCTION:    AcpiTbIsTableLoaded
 722  *
 723  * PARAMETERS:  TableIndex          - Table index
 724  *
 725  * RETURN:      Table Loaded Flag
 726  *
 727  ******************************************************************************/
 728
 729 BOOLEAN
 730 AcpiTbIsTableLoaded (
 731     UINT32                  TableIndex)
 732 {
 733     BOOLEAN                 IsLoaded = FALSE;
 734
 735
 736     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 737     if (TableIndex < AcpiGbl_RootTableList.Count)
 738     {
 739         IsLoaded = (BOOLEAN)
 740             (AcpiGbl_RootTableList.Tables[TableIndex].Flags &
 741             ACPI_TABLE_IS_LOADED);
 742     }
 743
 744     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 745     return (IsLoaded);
 746 }
 747
 748
 749 /*******************************************************************************
 750  *
 751  * FUNCTION:    AcpiTbSetTableLoadedFlag
 752  *
 753  * PARAMETERS:  TableIndex          - Table index
 754  *              IsLoaded            - TRUE if table is loaded, FALSE otherwise
 755  *
 756  * RETURN:      None
 757  *
 758  * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
 759  *
 760  ******************************************************************************/
 761
 762 void
 763 AcpiTbSetTableLoadedFlag (
 764     UINT32                  TableIndex,
 765     BOOLEAN                 IsLoaded)
 766 {
 767
 768     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 769     if (TableIndex < AcpiGbl_RootTableList.Count)
 770     {
 771         if (IsLoaded)
 772         {
 773             AcpiGbl_RootTableList.Tables[TableIndex].Flags |=
 774                 ACPI_TABLE_IS_LOADED;
 775         }
 776         else
 777         {
 778             AcpiGbl_RootTableList.Tables[TableIndex].Flags &=
 779                 ~ACPI_TABLE_IS_LOADED;
 780         }
 781     }
 782
 783     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 784 }
 785