utxface.c

acpi tools for linux include acpiexec and acpixtract

     * Note: Any objects accessed by the _REG methods will be automatically
     * initialized, even if they contain executable AML (see the call to
     * AcpiNsInitializeObjects below).
     */
    if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Executing _REG OpRegion methods\n"));

        Status = AcpiEvInitializeOpRegions ();
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Initialize the objects that remain uninitialized. This runs the
     * executable AML that may be part of the declaration of these objects:
     * OperationRegions, BufferFields, Buffers, and Packages.
     */
    if (!(Flags & ACPI_NO_OBJECT_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Completing Initialization of ACPI Objects\n"));

        Status = AcpiNsInitializeObjects ();
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Initialize all device objects in the namespace. This runs the device
     * _STA and _INI methods.
     */
    if (!(Flags & ACPI_NO_DEVICE_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Initializing ACPI Devices\n"));

        Status = AcpiNsInitializeDevices ();
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Empty the caches (delete the cached objects) on the assumption that
     * the table load filled them up more than they will be at runtime --
     * thus wasting non-paged memory.
     */
    Status = AcpiPurgeCachedObjects ();

    AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
    return_ACPI_STATUS (Status);
}

ACPI_EXPORT_SYMBOL (AcpiInitializeObjects)


#endif

/*******************************************************************************
 *
 * FUNCTION:    AcpiTerminate
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Shutdown the ACPI subsystem.  Release all resources.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiTerminate (
    void)
{
    ACPI_STATUS         Status;


    ACPI_FUNCTION_TRACE (AcpiTerminate);


    /* Terminate the AML Debugger if present */

    ACPI_DEBUGGER_EXEC(AcpiGbl_DbTerminateThreads = TRUE);

    /* Shutdown and free all resources */

    AcpiUtSubsystemShutdown ();


    /* Free the mutex objects */

    AcpiUtMutexTerminate ();


#ifdef ACPI_DEBUGGER

    /* Shut down the debugger */

    AcpiDbTerminate ();
#endif

    /* Now we can shutdown the OS-dependent layer */

    Status = AcpiOsTerminate ();
    return_ACPI_STATUS (Status);
}

ACPI_EXPORT_SYMBOL (AcpiTerminate)

#ifndef ACPI_ASL_COMPILER

/*******************************************************************************
 *
 * FUNCTION:    AcpiSubsystemStatus
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status of the ACPI subsystem
 *
 * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
 *              before making any other calls, to ensure the subsystem
 *              initialized successfully.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiSubsystemStatus (
    void)
{

    if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
    {
        return (AE_OK);
    }
    else
    {
        return (AE_ERROR);
    }
}

ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus)


/*******************************************************************************
 *
 * FUNCTION:    AcpiGetSystemInfo
 *
 * PARAMETERS:  OutBuffer       - A buffer to receive the resources for the
 *                                device
 *
 * RETURN:      Status          - the status of the call
 *
 * DESCRIPTION: This function is called to get information about the current
 *              state of the ACPI subsystem.  It will return system information
 *              in the OutBuffer.
 *
 *              If the function fails an appropriate status will be returned
 *              and the value of OutBuffer is undefined.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiGetSystemInfo (
    ACPI_BUFFER             *OutBuffer)
{
    ACPI_SYSTEM_INFO        *InfoPtr;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);


    /* Parameter validation */

    Status = AcpiUtValidateBuffer (OutBuffer);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Validate/Allocate/Clear caller buffer */

    Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * Populate the return buffer
     */
    InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;

    InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;

    /* System flags (ACPI capabilities) */

    InfoPtr->Flags = ACPI_SYS_MODE_ACPI;

    /* Timer resolution - 24 or 32 bits  */

    if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
    {
        InfoPtr->TimerResolution = 24;
    }
    else
    {
        InfoPtr->TimerResolution = 32;
    }

    /* Clear the reserved fields */

    InfoPtr->Reserved1 = 0;
    InfoPtr->Reserved2 = 0;

    /* Current debug levels */

    InfoPtr->DebugLayer = AcpiDbgLayer;
    InfoPtr->DebugLevel = AcpiDbgLevel;

    return_ACPI_STATUS (AE_OK);
}

ACPI_EXPORT_SYMBOL (AcpiGetSystemInfo)


/*******************************************************************************
 *
 * FUNCTION:    AcpiGetStatistics
 *
 * PARAMETERS:  Stats           - Where the statistics are returned
 *
 * RETURN:      Status          - the status of the call
 *
 * DESCRIPTION: Get the contents of the various system counters
 *
 ******************************************************************************/

ACPI_STATUS
AcpiGetStatistics (
    ACPI_STATISTICS         *Stats)
{
    ACPI_FUNCTION_TRACE (AcpiGetStatistics);


    /* Parameter validation */

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

    /* Various interrupt-based event counters */

    Stats->SciCount = AcpiSciCount;
    Stats->GpeCount = AcpiGpeCount;

    ACPI_MEMCPY (Stats->FixedEventCount, AcpiFixedEventCount,
        sizeof (AcpiFixedEventCount));


    /* Other counters */

    Stats->MethodCount = AcpiMethodCount;

    return_ACPI_STATUS (AE_OK);
}

ACPI_EXPORT_SYMBOL (AcpiGetStatistics)


/*****************************************************************************
 *
 * FUNCTION:    AcpiInstallInitializationHandler
 *
 * PARAMETERS:  Handler             - Callback procedure
 *              Function            - Not (currently) used, see below
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Install an initialization handler
 *
 * TBD: When a second function is added, must save the Function also.
 *
 ****************************************************************************/

ACPI_STATUS
AcpiInstallInitializationHandler (
    ACPI_INIT_HANDLER       Handler,
    UINT32                  Function)
{

    if (!Handler)
    {
        return (AE_BAD_PARAMETER);
    }

    if (AcpiGbl_InitHandler)
    {
        return (AE_ALREADY_EXISTS);
    }

    AcpiGbl_InitHandler = Handler;
    return AE_OK;
}

ACPI_EXPORT_SYMBOL (AcpiInstallInitializationHandler)


/*****************************************************************************
 *
 * FUNCTION:    AcpiPurgeCachedObjects
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Empty all caches (delete the cached objects)
 *
 ****************************************************************************/

ACPI_STATUS
AcpiPurgeCachedObjects (
    void)
{
    ACPI_FUNCTION_TRACE (AcpiPurgeCachedObjects);

    (void) AcpiOsPurgeCache (AcpiGbl_StateCache);
    (void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
    (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
    (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
    return_ACPI_STATUS (AE_OK);
}

ACPI_EXPORT_SYMBOL (AcpiPurgeCachedObjects)

#endif