Exemple #1
0
ACPI_TABLE_HEADER *
AcpiTbCopyDsdt (
    UINT32                  TableIndex)
{
    ACPI_TABLE_HEADER       *NewTable;
    ACPI_TABLE_DESC         *TableDesc;


    TableDesc = &AcpiGbl_RootTableList.Tables[TableIndex];

    NewTable = ACPI_ALLOCATE (TableDesc->Length);
    if (!NewTable)
    {
        ACPI_ERROR ((AE_INFO, "Could not copy DSDT of length 0x%X",
            TableDesc->Length));
        return (NULL);
    }

    memcpy (NewTable, TableDesc->Pointer, TableDesc->Length);
    AcpiTbUninstallTable (TableDesc);

    AcpiTbInitTableDescriptor (
        &AcpiGbl_RootTableList.Tables[AcpiGbl_DsdtIndex],
        ACPI_PTR_TO_PHYSADDR (NewTable),
        ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, NewTable);

    ACPI_INFO ((
        "Forced DSDT copy: length 0x%05X copied locally, original unmapped",
        NewTable->Length));

    return (NewTable);
}
Exemple #2
0
/*******************************************************************************
 *
 * FUNCTION:    AeLocalLoadTable
 *
 * PARAMETERS:  TablePtr        - pointer to a buffer containing the entire
 *                                table to be loaded
 *
 * RETURN:      Status
 *
 * DESCRIPTION: This function is called to load a table from the caller's
 *              buffer.  The buffer must contain an entire ACPI Table including
 *              a valid header.  The header fields will be verified, and if it
 *              is determined that the table is invalid, the call will fail.
 *
 *              If the call fails an appropriate status will be returned.
 *
 ******************************************************************************/

#if 0 /* XXX unused -- [email protected] */
ACPI_STATUS
AeLocalLoadTable (
    ACPI_TABLE_HEADER       *TablePtr)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_DESC         TableInfo;


    FUNCTION_TRACE ("AeLocalLoadTable");

    if (!TablePtr)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Install the new table into the local data structures */

    TableInfo.Pointer = TablePtr;

    Status = AcpiTbInstallTable (NULL, &TableInfo);
    if (ACPI_FAILURE (Status))
    {
        /* Free table allocated by AcpiTbGetTable */

        AcpiTbDeleteSingleTable (&TableInfo);
        return_ACPI_STATUS (Status);
    }


#ifndef PARSER_ONLY
    Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
    if (ACPI_FAILURE (Status))
    {
        /* Uninstall table and free the buffer */

        AcpiTbUninstallTable (TableInfo.InstalledDesc);
        return_ACPI_STATUS (Status);
    }
#endif

    return_ACPI_STATUS (Status);
}
Exemple #3
0
void
AcpiTbTerminate (
    void)
{
    UINT32                  i;


    ACPI_FUNCTION_TRACE (TbTerminate);


    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);

    /* Delete the individual tables */

    for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
    {
        AcpiTbUninstallTable (&AcpiGbl_RootTableList.Tables[i]);
    }

    /*
     * Delete the root table array if allocated locally. Array cannot be
     * mapped, so we don't need to check for that flag.
     */
    if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
    {
        ACPI_FREE (AcpiGbl_RootTableList.Tables);
    }

    AcpiGbl_RootTableList.Tables = NULL;
    AcpiGbl_RootTableList.Flags = 0;
    AcpiGbl_RootTableList.CurrentTableCount = 0;

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
    return_VOID;
}
Exemple #4
0
void
AcpiTbOverrideTable (
    ACPI_TABLE_DESC         *OldTableDesc)
{
    ACPI_STATUS             Status;
    char                    *OverrideType;
    ACPI_TABLE_DESC         NewTableDesc;
    ACPI_TABLE_HEADER       *Table;
    ACPI_PHYSICAL_ADDRESS   Address;
    UINT32                  Length;


    /* (1) Attempt logical override (returns a logical address) */

    Status = AcpiOsTableOverride (OldTableDesc->Pointer, &Table);
    if (ACPI_SUCCESS (Status) && Table)
    {
        AcpiTbAcquireTempTable (&NewTableDesc, ACPI_PTR_TO_PHYSADDR (Table),
            ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL);
        OverrideType = "Logical";
        goto FinishOverride;
    }

    /* (2) Attempt physical override (returns a physical address) */

    Status = AcpiOsPhysicalTableOverride (OldTableDesc->Pointer,
        &Address, &Length);
    if (ACPI_SUCCESS (Status) && Address && Length)
    {
        AcpiTbAcquireTempTable (&NewTableDesc, Address,
            ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL);
        OverrideType = "Physical";
        goto FinishOverride;
    }

    return; /* There was no override */


FinishOverride:

    /* Validate and verify a table before overriding */

    Status = AcpiTbVerifyTempTable (&NewTableDesc, NULL);
    if (ACPI_FAILURE (Status))
    {
        return;
    }

    ACPI_INFO ((AE_INFO, "%4.4s 0x%8.8X%8.8X"
        " %s table override, new table: 0x%8.8X%8.8X",
        OldTableDesc->Signature.Ascii,
        ACPI_FORMAT_UINT64 (OldTableDesc->Address),
        OverrideType, ACPI_FORMAT_UINT64 (NewTableDesc.Address)));

    /* We can now uninstall the original table */

    AcpiTbUninstallTable (OldTableDesc);

    /*
     * Replace the original table descriptor and keep its state as
     * "VALIDATED".
     */
    AcpiTbInitTableDescriptor (OldTableDesc, NewTableDesc.Address,
        NewTableDesc.Flags, NewTableDesc.Pointer);
    AcpiTbValidateTempTable (OldTableDesc);

    /* Release the temporary table descriptor */

    AcpiTbReleaseTempTable (&NewTableDesc);
}
Exemple #5
0
ACPI_STATUS
AcpiTbInstallStandardTable (
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT8                   Flags,
    BOOLEAN                 Reload,
    BOOLEAN                 Override,
    UINT32                  *TableIndex)
{
    UINT32                  i;
    ACPI_STATUS             Status = AE_OK;
    ACPI_TABLE_DESC         NewTableDesc;


    ACPI_FUNCTION_TRACE (TbInstallStandardTable);


    /* Acquire a temporary table descriptor for validation */

    Status = AcpiTbAcquireTempTable (&NewTableDesc, Address, Flags);
    if (ACPI_FAILURE (Status))
    {
        ACPI_ERROR ((AE_INFO,
            "Could not acquire table length at %8.8X%8.8X",
            ACPI_FORMAT_UINT64 (Address)));
        return_ACPI_STATUS (Status);
    }

    /*
     * Optionally do not load any SSDTs from the RSDT/XSDT. This can
     * be useful for debugging ACPI problems on some machines.
     */
    if (!Reload &&
        AcpiGbl_DisableSsdtTableInstall &&
        ACPI_COMPARE_NAME (&NewTableDesc.Signature, ACPI_SIG_SSDT))
    {
        ACPI_INFO ((AE_INFO,
            "Ignoring installation of %4.4s at %8.8X%8.8X",
            NewTableDesc.Signature.Ascii, ACPI_FORMAT_UINT64 (Address)));
        goto ReleaseAndExit;
    }

    /* Validate and verify a table before installation */

    Status = AcpiTbVerifyTempTable (&NewTableDesc, NULL);
    if (ACPI_FAILURE (Status))
    {
        goto ReleaseAndExit;
    }

    if (Reload)
    {
        /*
         * Validate the incoming table signature.
         *
         * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
         * 2) We added support for OEMx tables, signature "OEM".
         * 3) Valid tables were encountered with a null signature, so we just
         *    gave up on validating the signature, (05/2008).
         * 4) We encountered non-AML tables such as the MADT, which caused
         *    interpreter errors and kernel faults. So now, we once again allow
         *    only "SSDT", "OEMx", and now, also a null signature. (05/2011).
         */
        if ((NewTableDesc.Signature.Ascii[0] != 0x00) &&
           (!ACPI_COMPARE_NAME (&NewTableDesc.Signature, ACPI_SIG_SSDT)) &&
           (strncmp (NewTableDesc.Signature.Ascii, "OEM", 3)))
        {
            ACPI_BIOS_ERROR ((AE_INFO,
                "Table has invalid signature [%4.4s] (0x%8.8X), "
                "must be SSDT or OEMx",
                AcpiUtValidAcpiName (NewTableDesc.Signature.Ascii) ?
                    NewTableDesc.Signature.Ascii : "????",
                NewTableDesc.Signature.Integer));

            Status = AE_BAD_SIGNATURE;
            goto ReleaseAndExit;
        }

        /* Check if table is already registered */

        for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
        {
            /*
             * Check for a table match on the entire table length,
             * not just the header.
             */
            if (!AcpiTbCompareTables (&NewTableDesc, i))
            {
                continue;
            }

            /*
             * Note: the current mechanism does not unregister a table if it is
             * dynamically unloaded. The related namespace entries are deleted,
             * but the table remains in the root table list.
             *
             * The assumption here is that the number of different tables that
             * will be loaded is actually small, and there is minimal overhead
             * in just keeping the table in case it is needed again.
             *
             * If this assumption changes in the future (perhaps on large
             * machines with many table load/unload operations), tables will
             * need to be unregistered when they are unloaded, and slots in the
             * root table list should be reused when empty.
             */
            if (AcpiGbl_RootTableList.Tables[i].Flags &
                ACPI_TABLE_IS_LOADED)
            {
                /* Table is still loaded, this is an error */

                Status = AE_ALREADY_EXISTS;
                goto ReleaseAndExit;
            }
            else
            {
                /*
                 * Table was unloaded, allow it to be reloaded.
                 * As we are going to return AE_OK to the caller, we should
                 * take the responsibility of freeing the input descriptor.
                 * Refill the input descriptor to ensure
                 * AcpiTbInstallTableWithOverride() can be called again to
                 * indicate the re-installation.
                 */
                AcpiTbUninstallTable (&NewTableDesc);
                *TableIndex = i;
                return_ACPI_STATUS (AE_OK);
            }
        }
    }

    /* Add the table to the global root table list */

    AcpiTbInstallTableWithOverride (&NewTableDesc, Override, TableIndex);

ReleaseAndExit:

    /* Release the temporary table descriptor */

    AcpiTbReleaseTempTable (&NewTableDesc);
    return_ACPI_STATUS (Status);
}
Exemple #6
0
ACPI_STATUS ACPI_INIT_FUNCTION
AcpiReallocateRootTable (
    void)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_DESC         *TableDesc;
    UINT32                  i, j;


    ACPI_FUNCTION_TRACE (AcpiReallocateRootTable);


    /*
     * If there are tables unverified, it is required to reallocate the
     * root table list to clean up invalid table entries. Otherwise only
     * reallocate the root table list if the host provided a static buffer
     * for the table array in the call to AcpiInitializeTables().
     */
    if ((AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) &&
        AcpiGbl_EnableTableValidation)
    {
        return_ACPI_STATUS (AE_SUPPORT);
    }

    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);

    /*
     * Ensure OS early boot logic, which is required by some hosts. If the
     * table state is reported to be wrong, developers should fix the
     * issue by invoking AcpiPutTable() for the reported table during the
     * early stage.
     */
    for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
    {
        TableDesc = &AcpiGbl_RootTableList.Tables[i];
        if (TableDesc->Pointer)
        {
            ACPI_ERROR ((AE_INFO,
                "Table [%4.4s] is not invalidated during early boot stage",
                TableDesc->Signature.Ascii));
        }
    }

    if (!AcpiGbl_EnableTableValidation)
    {
        /*
         * Now it's safe to do full table validation. We can do deferred
         * table initialization here once the flag is set.
         */
        AcpiGbl_EnableTableValidation = TRUE;
        for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
        {
            TableDesc = &AcpiGbl_RootTableList.Tables[i];
            if (!(TableDesc->Flags & ACPI_TABLE_IS_VERIFIED))
            {
                Status = AcpiTbVerifyTempTable (TableDesc, NULL, &j);
                if (ACPI_FAILURE (Status))
                {
                    AcpiTbUninstallTable (TableDesc);
                }
            }
        }
    }

    AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ALLOW_RESIZE;
    Status = AcpiTbResizeRootTableList ();
    AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ORIGIN_ALLOCATED;

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
    return_ACPI_STATUS (Status);
}
Exemple #7
0
ACPI_STATUS
AcpiLoadTable (
    ACPI_TABLE_HEADER       *TablePtr)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_DESC         TableInfo;
    ACPI_POINTER            Address;


    ACPI_FUNCTION_TRACE ("AcpiLoadTable");


    if (!TablePtr)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Copy the table to a local buffer */

    Address.PointerType     = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
    Address.Pointer.Logical = TablePtr;

    Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Install the new table into the local data structures */

    Status = AcpiTbInstallTable (&TableInfo);
    if (ACPI_FAILURE (Status))
    {
        /* Free table allocated by AcpiTbGetTableBody */

        AcpiTbDeleteSingleTable (&TableInfo);
        return_ACPI_STATUS (Status);
    }

    /* Convert the table to common format if necessary */

    switch (TableInfo.Type)
    {
    case ACPI_TABLE_FADT:

        Status = AcpiTbConvertTableFadt ();
        break;

    case ACPI_TABLE_FACS:

        Status = AcpiTbBuildCommonFacs (&TableInfo);
        break;

    default:
        /* Load table into namespace if it contains executable AML */

        Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
        break;
    }

    if (ACPI_FAILURE (Status))
    {
        /* Uninstall table and free the buffer */

        (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
    }

    return_ACPI_STATUS (Status);
}
Exemple #8
0
ACPI_STATUS
AcpiTbInstallStandardTable (
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT8                   Flags,
    BOOLEAN                 Reload,
    BOOLEAN                 Override,
    UINT32                  *TableIndex)
{
    UINT32                  i;
    ACPI_STATUS             Status = AE_OK;
    ACPI_TABLE_DESC         NewTableDesc;


    ACPI_FUNCTION_TRACE (TbInstallStandardTable);


    /* Acquire a temporary table descriptor for validation */

    Status = AcpiTbAcquireTempTable (&NewTableDesc, Address, Flags);
    if (ACPI_FAILURE (Status))
    {
        ACPI_ERROR ((AE_INFO,
            "Could not acquire table length at %8.8X%8.8X",
            ACPI_FORMAT_UINT64 (Address)));
        return_ACPI_STATUS (Status);
    }

    /*
     * Optionally do not load any SSDTs from the RSDT/XSDT. This can
     * be useful for debugging ACPI problems on some machines.
     */
    if (!Reload &&
        AcpiGbl_DisableSsdtTableInstall &&
        ACPI_COMPARE_NAME (&NewTableDesc.Signature, ACPI_SIG_SSDT))
    {
        ACPI_INFO ((
            "Ignoring installation of %4.4s at %8.8X%8.8X",
            NewTableDesc.Signature.Ascii, ACPI_FORMAT_UINT64 (Address)));
        goto ReleaseAndExit;
    }

    /* Acquire the table lock */

    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);

    /* Validate and verify a table before installation */

    Status = AcpiTbVerifyTempTable (&NewTableDesc, NULL, &i);
    if (ACPI_FAILURE (Status))
    {
        if (Status == AE_CTRL_TERMINATE)
        {
            /*
             * Table was unloaded, allow it to be reloaded.
             * As we are going to return AE_OK to the caller, we should
             * take the responsibility of freeing the input descriptor.
             * Refill the input descriptor to ensure
             * AcpiTbInstallTableWithOverride() can be called again to
             * indicate the re-installation.
             */
            AcpiTbUninstallTable (&NewTableDesc);
            (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
            *TableIndex = i;
            return_ACPI_STATUS (AE_OK);
        }
        goto UnlockAndExit;
    }

    /* Add the table to the global root table list */

    AcpiTbInstallTableWithOverride (&NewTableDesc, Override, TableIndex);

    /* Invoke table handler */

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
    AcpiTbNotifyTable (ACPI_TABLE_EVENT_INSTALL, NewTableDesc.Pointer);
    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);

UnlockAndExit:

    /* Release the table lock */

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);

ReleaseAndExit:

    /* Release the temporary table descriptor */

    AcpiTbReleaseTempTable (&NewTableDesc);
    return_ACPI_STATUS (Status);
}
Exemple #9
0
void
AcpiTbDeleteTablesByType (
    ACPI_TABLE_TYPE         Type)
{
    ACPI_TABLE_DESC         *TableDesc;
    UINT32                  Count;
    UINT32                  i;


    ACPI_FUNCTION_TRACE_U32 (TbDeleteTablesByType, Type);


    if (Type > ACPI_TABLE_ID_MAX)
    {
        return_VOID;
    }

    if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_TABLES)))
    {
        return;
    }

    /* Clear the appropriate "typed" global table pointer */

    switch (Type)
    {
    case ACPI_TABLE_ID_RSDP:
        AcpiGbl_RSDP = NULL;
        break;

    case ACPI_TABLE_ID_DSDT:
        AcpiGbl_DSDT = NULL;
        break;

    case ACPI_TABLE_ID_FADT:
        AcpiGbl_FADT = NULL;
        break;

    case ACPI_TABLE_ID_FACS:
        AcpiGbl_FACS = NULL;
        break;

    case ACPI_TABLE_ID_XSDT:
        AcpiGbl_XSDT = NULL;
        break;

    case ACPI_TABLE_ID_SSDT:
    case ACPI_TABLE_ID_PSDT:
    default:
        break;
    }

    /*
     * Free the table
     * 1) Get the head of the list
     */
    TableDesc = AcpiGbl_TableLists[Type].Next;
    Count = AcpiGbl_TableLists[Type].Count;

    /*
     * 2) Walk the entire list, deleting both the allocated tables
     *    and the table descriptors
     */
    for (i = 0; i < Count; i++)
    {
        TableDesc = AcpiTbUninstallTable (TableDesc);
    }

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
    return_VOID;
}