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

   1 /******************************************************************************
   2  *
   3  * Module Name: tbdata - Table manager data structure functions
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2015, 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 #include "acpi.h"
 117 #include "accommon.h"
 118 #include "acnamesp.h"
 119 #include "actables.h"
 120
 121 #define _COMPONENT          ACPI_TABLES
 122         ACPI_MODULE_NAME    ("tbdata")
 123
 124
 125 /*******************************************************************************
 126  *
 127  * FUNCTION:    AcpiTbInitTableDescriptor
 128  *
 129  * PARAMETERS:  TableDesc               - Table descriptor
 130  *              Address                 - Physical address of the table
 131  *              Flags                   - Allocation flags of the table
 132  *              Table                   - Pointer to the table
 133  *
 134  * RETURN:      None
 135  *
 136  * DESCRIPTION: Initialize a new table descriptor
 137  *
 138  ******************************************************************************/
 139
 140 void
 141 AcpiTbInitTableDescriptor (
 142     ACPI_TABLE_DESC         *TableDesc,
 143     ACPI_PHYSICAL_ADDRESS   Address,
 144     UINT8                   Flags,
 145     ACPI_TABLE_HEADER       *Table)
 146 {
 147
 148     /*
 149      * Initialize the table descriptor. Set the pointer to NULL, since the
 150      * table is not fully mapped at this time.
 151      */
 152     memset (TableDesc, 0, sizeof (ACPI_TABLE_DESC));
 153     TableDesc->Address = Address;
 154     TableDesc->Length = Table->Length;
 155     TableDesc->Flags = Flags;
 156     ACPI_MOVE_32_TO_32 (TableDesc->Signature.Ascii, Table->Signature);
 157 }
 158
 159
 160 /*******************************************************************************
 161  *
 162  * FUNCTION:    AcpiTbAcquireTable
 163  *
 164  * PARAMETERS:  TableDesc           - Table descriptor
 165  *              TablePtr            - Where table is returned
 166  *              TableLength         - Where table length is returned
 167  *              TableFlags          - Where table allocation flags are returned
 168  *
 169  * RETURN:      Status
 170  *
 171  * DESCRIPTION: Acquire an ACPI table. It can be used for tables not
 172  *              maintained in the AcpiGbl_RootTableList.
 173  *
 174  ******************************************************************************/
 175
 176 ACPI_STATUS
 177 AcpiTbAcquireTable (
 178     ACPI_TABLE_DESC         *TableDesc,
 179     ACPI_TABLE_HEADER       **TablePtr,
 180     UINT32                  *TableLength,
 181     UINT8                   *TableFlags)
 182 {
 183     ACPI_TABLE_HEADER       *Table = NULL;
 184
 185
 186     switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK)
 187     {
 188     case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
 189
 190         Table = AcpiOsMapMemory (TableDesc->Address, TableDesc->Length);
 191         break;
 192
 193     case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
 194     case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
 195
 196         Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER,
 197             ACPI_PHYSADDR_TO_PTR (TableDesc->Address));
 198         break;
 199
 200     default:
 201
 202         break;
 203     }
 204
 205     /* Table is not valid yet */
 206
 207     if (!Table)
 208     {
 209         return (AE_NO_MEMORY);
 210     }
 211
 212     /* Fill the return values */
 213
 214     *TablePtr = Table;
 215     *TableLength = TableDesc->Length;
 216     *TableFlags = TableDesc->Flags;
 217     return (AE_OK);
 218 }
 219
 220
 221 /*******************************************************************************
 222  *
 223  * FUNCTION:    AcpiTbReleaseTable
 224  *
 225  * PARAMETERS:  Table               - Pointer for the table
 226  *              TableLength         - Length for the table
 227  *              TableFlags          - Allocation flags for the table
 228  *
 229  * RETURN:      None
 230  *
 231  * DESCRIPTION: Release a table. The inverse of AcpiTbAcquireTable().
 232  *
 233  ******************************************************************************/
 234
 235 void
 236 AcpiTbReleaseTable (
 237     ACPI_TABLE_HEADER       *Table,
 238     UINT32                  TableLength,
 239     UINT8                   TableFlags)
 240 {
 241
 242     switch (TableFlags & ACPI_TABLE_ORIGIN_MASK)
 243     {
 244     case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
 245
 246         AcpiOsUnmapMemory (Table, TableLength);
 247         break;
 248
 249     case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
 250     case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
 251     default:
 252
 253         break;
 254     }
 255 }
 256
 257
 258 /*******************************************************************************
 259  *
 260  * FUNCTION:    AcpiTbAcquireTempTable
 261  *
 262  * PARAMETERS:  TableDesc           - Table descriptor to be acquired
 263  *              Address             - Address of the table
 264  *              Flags               - Allocation flags of the table
 265  *
 266  * RETURN:      Status
 267  *
 268  * DESCRIPTION: This function validates the table header to obtain the length
 269  *              of a table and fills the table descriptor to make its state as
 270  *              "INSTALLED". Such a table descriptor is only used for verified
 271  *              installation.
 272  *
 273  ******************************************************************************/
 274
 275 ACPI_STATUS
 276 AcpiTbAcquireTempTable (
 277     ACPI_TABLE_DESC         *TableDesc,
 278     ACPI_PHYSICAL_ADDRESS   Address,
 279     UINT8                   Flags)
 280 {
 281     ACPI_TABLE_HEADER       *TableHeader;
 282
 283
 284     switch (Flags & ACPI_TABLE_ORIGIN_MASK)
 285     {
 286     case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
 287
 288         /* Get the length of the full table from the header */
 289
 290         TableHeader = AcpiOsMapMemory (Address, sizeof (ACPI_TABLE_HEADER));
 291         if (!TableHeader)
 292         {
 293             return (AE_NO_MEMORY);
 294         }
 295
 296         AcpiTbInitTableDescriptor (TableDesc, Address, Flags, TableHeader);
 297         AcpiOsUnmapMemory (TableHeader, sizeof (ACPI_TABLE_HEADER));
 298         return (AE_OK);
 299
 300     case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
 301     case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
 302
 303         TableHeader = ACPI_CAST_PTR (ACPI_TABLE_HEADER,
 304             ACPI_PHYSADDR_TO_PTR (Address));
 305         if (!TableHeader)
 306         {
 307             return (AE_NO_MEMORY);
 308         }
 309
 310         AcpiTbInitTableDescriptor (TableDesc, Address, Flags, TableHeader);
 311         return (AE_OK);
 312
 313     default:
 314
 315         break;
 316     }
 317
 318     /* Table is not valid yet */
 319
 320     return (AE_NO_MEMORY);
 321 }
 322
 323
 324 /*******************************************************************************
 325  *
 326  * FUNCTION:    AcpiTbReleaseTempTable
 327  *
 328  * PARAMETERS:  TableDesc           - Table descriptor to be released
 329  *
 330  * RETURN:      Status
 331  *
 332  * DESCRIPTION: The inverse of AcpiTbAcquireTempTable().
 333  *
 334  *****************************************************************************/
 335
 336 void
 337 AcpiTbReleaseTempTable (
 338     ACPI_TABLE_DESC         *TableDesc)
 339 {
 340
 341     /*
 342      * Note that the .Address is maintained by the callers of
 343      * AcpiTbAcquireTempTable(), thus do not invoke AcpiTbUninstallTable()
 344      * where .Address will be freed.
 345      */
 346     AcpiTbInvalidateTable (TableDesc);
 347 }
 348
 349
 350 /******************************************************************************
 351  *
 352  * FUNCTION:    AcpiTbValidateTable
 353  *
 354  * PARAMETERS:  TableDesc           - Table descriptor
 355  *
 356  * RETURN:      Status
 357  *
 358  * DESCRIPTION: This function is called to validate the table, the returned
 359  *              table descriptor is in "VALIDATED" state.
 360  *
 361  *****************************************************************************/
 362
 363 ACPI_STATUS
 364 AcpiTbValidateTable (
 365     ACPI_TABLE_DESC         *TableDesc)
 366 {
 367     ACPI_STATUS             Status = AE_OK;
 368
 369
 370     ACPI_FUNCTION_TRACE (TbValidateTable);
 371
 372
 373     /* Validate the table if necessary */
 374
 375     if (!TableDesc->Pointer)
 376     {
 377         Status = AcpiTbAcquireTable (TableDesc, &TableDesc->Pointer,
 378             &TableDesc->Length, &TableDesc->Flags);
 379         if (!TableDesc->Pointer)
 380         {
 381             Status = AE_NO_MEMORY;
 382         }
 383     }
 384
 385     return_ACPI_STATUS (Status);
 386 }
 387
 388
 389 /*******************************************************************************
 390  *
 391  * FUNCTION:    AcpiTbInvalidateTable
 392  *
 393  * PARAMETERS:  TableDesc           - Table descriptor
 394  *
 395  * RETURN:      None
 396  *
 397  * DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of
 398  *              AcpiTbValidateTable().
 399  *
 400  ******************************************************************************/
 401
 402 void
 403 AcpiTbInvalidateTable (
 404     ACPI_TABLE_DESC         *TableDesc)
 405 {
 406
 407     ACPI_FUNCTION_TRACE (TbInvalidateTable);
 408
 409
 410     /* Table must be validated */
 411
 412     if (!TableDesc->Pointer)
 413     {
 414         return_VOID;
 415     }
 416
 417     AcpiTbReleaseTable (TableDesc->Pointer, TableDesc->Length,
 418         TableDesc->Flags);
 419     TableDesc->Pointer = NULL;
 420
 421     return_VOID;
 422 }
 423
 424
 425 /******************************************************************************
 426  *
 427  * FUNCTION:    AcpiTbValidateTempTable
 428  *
 429  * PARAMETERS:  TableDesc           - Table descriptor
 430  *
 431  * RETURN:      Status
 432  *
 433  * DESCRIPTION: This function is called to validate the table, the returned
 434  *              table descriptor is in "VALIDATED" state.
 435  *
 436  *****************************************************************************/
 437
 438 ACPI_STATUS
 439 AcpiTbValidateTempTable (
 440     ACPI_TABLE_DESC         *TableDesc)
 441 {
 442
 443     if (!TableDesc->Pointer && !AcpiGbl_VerifyTableChecksum)
 444     {
 445         /*
 446          * Only validates the header of the table.
 447          * Note that Length contains the size of the mapping after invoking
 448          * this work around, this value is required by
 449          * AcpiTbReleaseTempTable().
 450          * We can do this because in AcpiInitTableDescriptor(), the Length
 451          * field of the installed descriptor is filled with the actual
 452          * table length obtaining from the table header.
 453          */
 454         TableDesc->Length = sizeof (ACPI_TABLE_HEADER);
 455     }
 456
 457     return (AcpiTbValidateTable (TableDesc));
 458 }
 459
 460
 461 /******************************************************************************
 462  *
 463  * FUNCTION:    AcpiTbVerifyTempTable
 464  *
 465  * PARAMETERS:  TableDesc           - Table descriptor
 466  *              Signature           - Table signature to verify
 467  *
 468  * RETURN:      Status
 469  *
 470  * DESCRIPTION: This function is called to validate and verify the table, the
 471  *              returned table descriptor is in "VALIDATED" state.
 472  *
 473  *****************************************************************************/
 474
 475 ACPI_STATUS
 476 AcpiTbVerifyTempTable (
 477     ACPI_TABLE_DESC         *TableDesc,
 478     char                    *Signature)
 479 {
 480     ACPI_STATUS             Status = AE_OK;
 481
 482
 483     ACPI_FUNCTION_TRACE (TbVerifyTempTable);
 484
 485
 486     /* Validate the table */
 487
 488     Status = AcpiTbValidateTempTable (TableDesc);
 489     if (ACPI_FAILURE (Status))
 490     {
 491         return_ACPI_STATUS (AE_NO_MEMORY);
 492     }
 493
 494     /* If a particular signature is expected (DSDT/FACS), it must match */
 495
 496     if (Signature &&
 497         !ACPI_COMPARE_NAME (&TableDesc->Signature, Signature))
 498     {
 499         ACPI_BIOS_ERROR ((AE_INFO,
 500             "Invalid signature 0x%X for ACPI table, expected [%s]",
 501             TableDesc->Signature.Integer, Signature));
 502         Status = AE_BAD_SIGNATURE;
 503         goto InvalidateAndExit;
 504     }
 505
 506     /* Verify the checksum */
 507
 508     if (AcpiGbl_VerifyTableChecksum)
 509     {
 510         Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
 511         if (ACPI_FAILURE (Status))
 512         {
 513             ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
 514                 "%4.4s 0x%8.8X%8.8X"
 515                 " Attempted table install failed",
 516                 AcpiUtValidAcpiName (TableDesc->Signature.Ascii) ?
 517                     TableDesc->Signature.Ascii : "????",
 518                 ACPI_FORMAT_UINT64 (TableDesc->Address)));
 519
 520             goto InvalidateAndExit;
 521         }
 522     }
 523
 524     return_ACPI_STATUS (AE_OK);
 525
 526 InvalidateAndExit:
 527     AcpiTbInvalidateTable (TableDesc);
 528     return_ACPI_STATUS (Status);
 529 }
 530
 531
 532 /*******************************************************************************
 533  *
 534  * FUNCTION:    AcpiTbResizeRootTableList
 535  *
 536  * PARAMETERS:  None
 537  *
 538  * RETURN:      Status
 539  *
 540  * DESCRIPTION: Expand the size of global table array
 541  *
 542  ******************************************************************************/
 543
 544 ACPI_STATUS
 545 AcpiTbResizeRootTableList (
 546     void)
 547 {
 548     ACPI_TABLE_DESC         *Tables;
 549     UINT32                  TableCount;
 550
 551
 552     ACPI_FUNCTION_TRACE (TbResizeRootTableList);
 553
 554
 555     /* AllowResize flag is a parameter to AcpiInitializeTables */
 556
 557     if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE))
 558     {
 559         ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed"));
 560         return_ACPI_STATUS (AE_SUPPORT);
 561     }
 562
 563     /* Increase the Table Array size */
 564
 565     if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
 566     {
 567         TableCount = AcpiGbl_RootTableList.MaxTableCount;
 568     }
 569     else
 570     {
 571         TableCount = AcpiGbl_RootTableList.CurrentTableCount;
 572     }
 573
 574     Tables = ACPI_ALLOCATE_ZEROED (
 575         ((ACPI_SIZE) TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT) *
 576         sizeof (ACPI_TABLE_DESC));
 577     if (!Tables)
 578     {
 579         ACPI_ERROR ((AE_INFO, "Could not allocate new root table array"));
 580         return_ACPI_STATUS (AE_NO_MEMORY);
 581     }
 582
 583     /* Copy and free the previous table array */
 584
 585     if (AcpiGbl_RootTableList.Tables)
 586     {
 587         memcpy (Tables, AcpiGbl_RootTableList.Tables,
 588             (ACPI_SIZE) TableCount * sizeof (ACPI_TABLE_DESC));
 589
 590         if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
 591         {
 592             ACPI_FREE (AcpiGbl_RootTableList.Tables);
 593         }
 594     }
 595
 596     AcpiGbl_RootTableList.Tables = Tables;
 597     AcpiGbl_RootTableList.MaxTableCount =
 598         TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT;
 599     AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
 600
 601     return_ACPI_STATUS (AE_OK);
 602 }
 603
 604
 605 /*******************************************************************************
 606  *
 607  * FUNCTION:    AcpiTbGetNextTableDescriptor
 608  *
 609  * PARAMETERS:  TableIndex          - Where table index is returned
 610  *              TableDesc           - Where table descriptor is returned
 611  *
 612  * RETURN:      Status and table index/descriptor.
 613  *
 614  * DESCRIPTION: Allocate a new ACPI table entry to the global table list
 615  *
 616  ******************************************************************************/
 617
 618 ACPI_STATUS
 619 AcpiTbGetNextTableDescriptor (
 620     UINT32                  *TableIndex,
 621     ACPI_TABLE_DESC         **TableDesc)
 622 {
 623     ACPI_STATUS             Status;
 624     UINT32                  i;
 625
 626
 627     /* Ensure that there is room for the table in the Root Table List */
 628
 629     if (AcpiGbl_RootTableList.CurrentTableCount >=
 630         AcpiGbl_RootTableList.MaxTableCount)
 631     {
 632         Status = AcpiTbResizeRootTableList();
 633         if (ACPI_FAILURE (Status))
 634         {
 635             return (Status);
 636         }
 637     }
 638
 639     i = AcpiGbl_RootTableList.CurrentTableCount;
 640     AcpiGbl_RootTableList.CurrentTableCount++;
 641
 642     if (TableIndex)
 643     {
 644         *TableIndex = i;
 645     }
 646     if (TableDesc)
 647     {
 648         *TableDesc = &AcpiGbl_RootTableList.Tables[i];
 649     }
 650
 651     return (AE_OK);
 652 }
 653
 654
 655 /*******************************************************************************
 656  *
 657  * FUNCTION:    AcpiTbTerminate
 658  *
 659  * PARAMETERS:  None
 660  *
 661  * RETURN:      None
 662  *
 663  * DESCRIPTION: Delete all internal ACPI tables
 664  *
 665  ******************************************************************************/
 666
 667 void
 668 AcpiTbTerminate (
 669     void)
 670 {
 671     UINT32                  i;
 672
 673
 674     ACPI_FUNCTION_TRACE (TbTerminate);
 675
 676
 677     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 678
 679     /* Delete the individual tables */
 680
 681     for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
 682     {
 683         AcpiTbUninstallTable (&AcpiGbl_RootTableList.Tables[i]);
 684     }
 685
 686     /*
 687      * Delete the root table array if allocated locally. Array cannot be
 688      * mapped, so we don't need to check for that flag.
 689      */
 690     if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
 691     {
 692         ACPI_FREE (AcpiGbl_RootTableList.Tables);
 693     }
 694
 695     AcpiGbl_RootTableList.Tables = NULL;
 696     AcpiGbl_RootTableList.Flags = 0;
 697     AcpiGbl_RootTableList.CurrentTableCount = 0;
 698
 699     ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));
 700
 701     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 702     return_VOID;
 703 }
 704
 705
 706 /*******************************************************************************
 707  *
 708  * FUNCTION:    AcpiTbDeleteNamespaceByOwner
 709  *
 710  * PARAMETERS:  TableIndex          - Table index
 711  *
 712  * RETURN:      Status
 713  *
 714  * DESCRIPTION: Delete all namespace objects created when this table was loaded.
 715  *
 716  ******************************************************************************/
 717
 718 ACPI_STATUS
 719 AcpiTbDeleteNamespaceByOwner (
 720     UINT32                  TableIndex)
 721 {
 722     ACPI_OWNER_ID           OwnerId;
 723     ACPI_STATUS             Status;
 724
 725
 726     ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner);
 727
 728
 729     Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 730     if (ACPI_FAILURE (Status))
 731     {
 732         return_ACPI_STATUS (Status);
 733     }
 734
 735     if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount)
 736     {
 737         /* The table index does not exist */
 738
 739         (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 740         return_ACPI_STATUS (AE_NOT_EXIST);
 741     }
 742
 743     /* Get the owner ID for this table, used to delete namespace nodes */
 744
 745     OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
 746     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 747
 748     /*
 749      * Need to acquire the namespace writer lock to prevent interference
 750      * with any concurrent namespace walks. The interpreter must be
 751      * released during the deletion since the acquisition of the deletion
 752      * lock may block, and also since the execution of a namespace walk
 753      * must be allowed to use the interpreter.
 754      */
 755     (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
 756     Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock);
 757
 758     AcpiNsDeleteNamespaceByOwner (OwnerId);
 759     if (ACPI_FAILURE (Status))
 760     {
 761         return_ACPI_STATUS (Status);
 762     }
 763
 764     AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock);
 765
 766     Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
 767     return_ACPI_STATUS (Status);
 768 }
 769
 770
 771 /*******************************************************************************
 772  *
 773  * FUNCTION:    AcpiTbAllocateOwnerId
 774  *
 775  * PARAMETERS:  TableIndex          - Table index
 776  *
 777  * RETURN:      Status
 778  *
 779  * DESCRIPTION: Allocates OwnerId in TableDesc
 780  *
 781  ******************************************************************************/
 782
 783 ACPI_STATUS
 784 AcpiTbAllocateOwnerId (
 785     UINT32                  TableIndex)
 786 {
 787     ACPI_STATUS             Status = AE_BAD_PARAMETER;
 788
 789
 790     ACPI_FUNCTION_TRACE (TbAllocateOwnerId);
 791
 792
 793     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 794     if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
 795     {
 796         Status = AcpiUtAllocateOwnerId (
 797             &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
 798     }
 799
 800     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 801     return_ACPI_STATUS (Status);
 802 }
 803
 804
 805 /*******************************************************************************
 806  *
 807  * FUNCTION:    AcpiTbReleaseOwnerId
 808  *
 809  * PARAMETERS:  TableIndex          - Table index
 810  *
 811  * RETURN:      Status
 812  *
 813  * DESCRIPTION: Releases OwnerId in TableDesc
 814  *
 815  ******************************************************************************/
 816
 817 ACPI_STATUS
 818 AcpiTbReleaseOwnerId (
 819     UINT32                  TableIndex)
 820 {
 821     ACPI_STATUS             Status = AE_BAD_PARAMETER;
 822
 823
 824     ACPI_FUNCTION_TRACE (TbReleaseOwnerId);
 825
 826
 827     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 828     if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
 829     {
 830         AcpiUtReleaseOwnerId (
 831             &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
 832         Status = AE_OK;
 833     }
 834
 835     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 836     return_ACPI_STATUS (Status);
 837 }
 838
 839
 840 /*******************************************************************************
 841  *
 842  * FUNCTION:    AcpiTbGetOwnerId
 843  *
 844  * PARAMETERS:  TableIndex          - Table index
 845  *              OwnerId             - Where the table OwnerId is returned
 846  *
 847  * RETURN:      Status
 848  *
 849  * DESCRIPTION: returns OwnerId for the ACPI table
 850  *
 851  ******************************************************************************/
 852
 853 ACPI_STATUS
 854 AcpiTbGetOwnerId (
 855     UINT32                  TableIndex,
 856     ACPI_OWNER_ID           *OwnerId)
 857 {
 858     ACPI_STATUS             Status = AE_BAD_PARAMETER;
 859
 860
 861     ACPI_FUNCTION_TRACE (TbGetOwnerId);
 862
 863
 864     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 865     if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
 866     {
 867         *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
 868         Status = AE_OK;
 869     }
 870
 871     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 872     return_ACPI_STATUS (Status);
 873 }
 874
 875
 876 /*******************************************************************************
 877  *
 878  * FUNCTION:    AcpiTbIsTableLoaded
 879  *
 880  * PARAMETERS:  TableIndex          - Index into the root table
 881  *
 882  * RETURN:      Table Loaded Flag
 883  *
 884  ******************************************************************************/
 885
 886 BOOLEAN
 887 AcpiTbIsTableLoaded (
 888     UINT32                  TableIndex)
 889 {
 890     BOOLEAN                 IsLoaded = FALSE;
 891
 892
 893     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 894     if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
 895     {
 896         IsLoaded = (BOOLEAN)
 897             (AcpiGbl_RootTableList.Tables[TableIndex].Flags &
 898             ACPI_TABLE_IS_LOADED);
 899     }
 900
 901     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 902     return (IsLoaded);
 903 }
 904
 905
 906 /*******************************************************************************
 907  *
 908  * FUNCTION:    AcpiTbSetTableLoadedFlag
 909  *
 910  * PARAMETERS:  TableIndex          - Table index
 911  *              IsLoaded            - TRUE if table is loaded, FALSE otherwise
 912  *
 913  * RETURN:      None
 914  *
 915  * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
 916  *
 917  ******************************************************************************/
 918
 919 void
 920 AcpiTbSetTableLoadedFlag (
 921     UINT32                  TableIndex,
 922     BOOLEAN                 IsLoaded)
 923 {
 924
 925     (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
 926     if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
 927     {
 928         if (IsLoaded)
 929         {
 930             AcpiGbl_RootTableList.Tables[TableIndex].Flags |=
 931                 ACPI_TABLE_IS_LOADED;
 932         }
 933         else
 934         {
 935             AcpiGbl_RootTableList.Tables[TableIndex].Flags &=
 936                 ~ACPI_TABLE_IS_LOADED;
 937         }
 938     }
 939
 940     (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
 941 }