Пример #1
0
void
AcpiDbSendNotify (
    char                    *Name,
    UINT32                  Value)
{
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_STATUS             Status;


    /* Translate name to an Named object */

    Node = AcpiDbConvertToNode (Name);
    if (!Node)
    {
        return;
    }

    /* Dispatch the notify if legal */

    if (AcpiEvIsNotifyObject (Node))
    {
        Status = AcpiEvQueueNotifyRequest (Node, Value);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not queue notify\n");
        }
    }
    else
    {
        AcpiOsPrintf (
            "Named object [%4.4s] Type %s, must be Device/Thermal/Processor type\n",
            AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type));
    }
}
Пример #2
0
ACPI_STATUS
AcpiExOpcode_2A_0T_0R (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_NAMESPACE_NODE     *Node;
    UINT32                  Value;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
            AcpiPsGetOpcodeName (WalkState->Opcode));


    /* Examine the opcode */

    switch (WalkState->Opcode)
    {
    case AML_NOTIFY_OP:         /* Notify (NotifyObject, NotifyValue) */

        /* The first operand is a namespace node */

        Node = (ACPI_NAMESPACE_NODE *) Operand[0];

        /* Second value is the notify value */

        Value = (UINT32) Operand[1]->Integer.Value;

        /* Are notifies allowed on this object? */

        if (!AcpiEvIsNotifyObject (Node))
        {
            ACPI_ERROR ((AE_INFO,
                "Unexpected notify object type [%s]",
                AcpiUtGetTypeName (Node->Type)));

            Status = AE_AML_OPERAND_TYPE;
            break;
        }

        /*
         * Dispatch the notify to the appropriate handler
         * NOTE: the request is queued for execution after this method
         * completes. The notify handlers are NOT invoked synchronously
         * from this thread -- because handlers may in turn run other
         * control methods.
         */
        Status = AcpiEvQueueNotifyRequest (Node, Value);
        break;


    default:

        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
    }

    return_ACPI_STATUS (Status);
}
Пример #3
0
ACPI_STATUS
AcpiEvQueueNotifyRequest (
    ACPI_NAMESPACE_NODE     *Node,
    UINT32                  NotifyValue)
{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *HandlerListHead = NULL;
    ACPI_GENERIC_STATE      *Info;
    UINT8                   HandlerListId = 0;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_NAME (EvQueueNotifyRequest);


    /* Are Notifies allowed on this object? */

    if (!AcpiEvIsNotifyObject (Node))
    {
        return (AE_TYPE);
    }

    /* Get the correct notify list type (System or Device) */

    if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
    {
        HandlerListId = ACPI_SYSTEM_HANDLER_LIST;
    }
    else
    {
        HandlerListId = ACPI_DEVICE_HANDLER_LIST;
    }

    /* Get the notify object attached to the namespace Node */

    ObjDesc = AcpiNsGetAttachedObject (Node);
    if (ObjDesc)
    {
        /* We have an attached object, Get the correct handler list */

        HandlerListHead = ObjDesc->CommonNotify.NotifyList[HandlerListId];
    }

    /*
     * If there is no notify handler (Global or Local)
     * for this object, just ignore the notify
     */
    if (!AcpiGbl_GlobalNotify[HandlerListId].Handler && !HandlerListHead)
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
            "No notify handler for Notify, ignoring (%4.4s, %X) node %p\n",
            AcpiUtGetNodeName (Node), NotifyValue, Node));

        return (AE_OK);
    }

    /* Setup notify info and schedule the notify dispatcher */

    Info = AcpiUtCreateGenericState ();
    if (!Info)
    {
        return (AE_NO_MEMORY);
    }

    Info->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;

    Info->Notify.Node = Node;
    Info->Notify.Value = (UINT16) NotifyValue;
    Info->Notify.HandlerListId = HandlerListId;
    Info->Notify.HandlerListHead = HandlerListHead;
    Info->Notify.Global = &AcpiGbl_GlobalNotify[HandlerListId];

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n",
        AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type),
        NotifyValue, AcpiUtGetNotifyName (NotifyValue, ACPI_TYPE_ANY), Node));

    Status = AcpiOsExecute (OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch,
        Info);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtDeleteGenericState (Info);
    }

    return (Status);
}
Пример #4
0
ACPI_STATUS
AcpiInstallNotifyHandler (
    ACPI_HANDLE             Device,
    UINT32                  HandlerType,
    ACPI_NOTIFY_HANDLER     Handler,
    void                    *Context)
{
    ACPI_NAMESPACE_NODE     *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Device);
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *HandlerObj;
    ACPI_STATUS             Status;
    UINT32                  i;


    ACPI_FUNCTION_TRACE (AcpiInstallNotifyHandler);


    /* Parameter validation */

    if ((!Device) || (!Handler) || (!HandlerType) ||
        (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * Root Object:
     * Registering a notify handler on the root object indicates that the
     * caller wishes to receive notifications for all objects. Note that
     * only one global handler can be registered per notify type.
     * Ensure that a handler is not already installed.
     */
    if (Device == ACPI_ROOT_OBJECT)
    {
        for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
        {
            if (HandlerType & (i+1))
            {
                if (AcpiGbl_GlobalNotify[i].Handler)
                {
                    Status = AE_ALREADY_EXISTS;
                    goto UnlockAndExit;
                }

                AcpiGbl_GlobalNotify[i].Handler = Handler;
                AcpiGbl_GlobalNotify[i].Context = Context;
            }
        }

        goto UnlockAndExit; /* Global notify handler installed, all done */
    }

    /*
     * All Other Objects:
     * Caller will only receive notifications specific to the target
     * object. Note that only certain object types are allowed to
     * receive notifications.
     */

    /* Are Notifies allowed on this object? */

    if (!AcpiEvIsNotifyObject (Node))
    {
        Status = AE_TYPE;
        goto UnlockAndExit;
    }

    /* Check for an existing internal object, might not exist */

    ObjDesc = AcpiNsGetAttachedObject (Node);
    if (!ObjDesc)
    {
        /* Create a new object */

        ObjDesc = AcpiUtCreateInternalObject (Node->Type);
        if (!ObjDesc)
        {
            Status = AE_NO_MEMORY;
            goto UnlockAndExit;
        }

        /* Attach new object to the Node, remove local reference */

        Status = AcpiNsAttachObject (Device, ObjDesc, Node->Type);
        AcpiUtRemoveReference (ObjDesc);
        if (ACPI_FAILURE (Status))
        {
            goto UnlockAndExit;
        }
    }

    /* Ensure that the handler is not already installed in the lists */

    for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
    {
        if (HandlerType & (i+1))
        {
            HandlerObj = ObjDesc->CommonNotify.NotifyList[i];
            while (HandlerObj)
            {
                if (HandlerObj->Notify.Handler == Handler)
                {
                    Status = AE_ALREADY_EXISTS;
                    goto UnlockAndExit;
                }

                HandlerObj = HandlerObj->Notify.Next[i];
            }
        }
    }

    /* Create and populate a new notify handler object */

    HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_NOTIFY);
    if (!HandlerObj)
    {
        Status = AE_NO_MEMORY;
        goto UnlockAndExit;
    }

    HandlerObj->Notify.Node = Node;
    HandlerObj->Notify.HandlerType = HandlerType;
    HandlerObj->Notify.Handler = Handler;
    HandlerObj->Notify.Context = Context;

    /* Install the handler at the list head(s) */

    for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
    {
        if (HandlerType & (i+1))
        {
            HandlerObj->Notify.Next[i] =
                ObjDesc->CommonNotify.NotifyList[i];

            ObjDesc->CommonNotify.NotifyList[i] = HandlerObj;
        }
    }

    /* Add an extra reference if handler was installed in both lists */

    if (HandlerType == ACPI_ALL_NOTIFY)
    {
        AcpiUtAddReference (HandlerObj);
    }


UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
    return_ACPI_STATUS (Status);
}
Пример #5
0
ACPI_STATUS
AcpiRemoveNotifyHandler (
    ACPI_HANDLE             Device,
    UINT32                  HandlerType,
    ACPI_NOTIFY_HANDLER     Handler)
{
    ACPI_NAMESPACE_NODE     *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Device);
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *HandlerObj;
    ACPI_OPERAND_OBJECT     *PreviousHandlerObj;
    ACPI_STATUS             Status = AE_OK;
    UINT32                  i;


    ACPI_FUNCTION_TRACE (AcpiRemoveNotifyHandler);


    /* Parameter validation */

    if ((!Device) || (!Handler) || (!HandlerType) ||
        (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Root Object. Global handlers are removed here */

    if (Device == ACPI_ROOT_OBJECT)
    {
        for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
        {
            if (HandlerType & (i+1))
            {
                Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
                if (ACPI_FAILURE (Status))
                {
                    return_ACPI_STATUS (Status);
                }

                if (!AcpiGbl_GlobalNotify[i].Handler ||
                    (AcpiGbl_GlobalNotify[i].Handler != Handler))
                {
                    Status = AE_NOT_EXIST;
                    goto UnlockAndExit;
                }

                ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
                    "Removing global notify handler\n"));

                AcpiGbl_GlobalNotify[i].Handler = NULL;
                AcpiGbl_GlobalNotify[i].Context = NULL;

                (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);

                /* Make sure all deferred notify tasks are completed */

                AcpiOsWaitEventsComplete ();
            }
        }

        return_ACPI_STATUS (AE_OK);
    }

    /* All other objects: Are Notifies allowed on this object? */

    if (!AcpiEvIsNotifyObject (Node))
    {
        return_ACPI_STATUS (AE_TYPE);
    }

    /* Must have an existing internal object */

    ObjDesc = AcpiNsGetAttachedObject (Node);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    /* Internal object exists. Find the handler and remove it */

    for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
    {
        if (HandlerType & (i+1))
        {
            Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
            if (ACPI_FAILURE (Status))
            {
                return_ACPI_STATUS (Status);
            }

            HandlerObj = ObjDesc->CommonNotify.NotifyList[i];
            PreviousHandlerObj = NULL;

            /* Attempt to find the handler in the handler list */

            while (HandlerObj &&
                  (HandlerObj->Notify.Handler != Handler))
            {
                PreviousHandlerObj = HandlerObj;
                HandlerObj = HandlerObj->Notify.Next[i];
            }

            if (!HandlerObj)
            {
                Status = AE_NOT_EXIST;
                goto UnlockAndExit;
            }

            /* Remove the handler object from the list */

            if (PreviousHandlerObj) /* Handler is not at the list head */
            {
                PreviousHandlerObj->Notify.Next[i] =
                    HandlerObj->Notify.Next[i];
            }
            else /* Handler is at the list head */
            {
                ObjDesc->CommonNotify.NotifyList[i] =
                    HandlerObj->Notify.Next[i];
            }

            (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);

            /* Make sure all deferred notify tasks are completed */

            AcpiOsWaitEventsComplete ();
            AcpiUtRemoveReference (HandlerObj);
        }
    }

    return_ACPI_STATUS (Status);


UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
    return_ACPI_STATUS (Status);
}
Пример #6
0
ACPI_STATUS
AcpiRemoveNotifyHandler (
    ACPI_HANDLE             Device,
    UINT32                  HandlerType,
    ACPI_NOTIFY_HANDLER     Handler)
{
    ACPI_OPERAND_OBJECT     *NotifyObj;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (AcpiRemoveNotifyHandler);


    /* Parameter validation */

    if ((!Device)  ||
        (!Handler) ||
        (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Convert and validate the device handle */

    Node = AcpiNsMapHandleToNode (Device);
    if (!Node)
    {
        Status = AE_BAD_PARAMETER;
        goto UnlockAndExit;
    }

    /* Root Object */

    if (Device == ACPI_ROOT_OBJECT)
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
            "Removing notify handler for namespace root object\n"));

        if (((HandlerType & ACPI_SYSTEM_NOTIFY) &&
              !AcpiGbl_SystemNotify.Handler)        ||
            ((HandlerType & ACPI_DEVICE_NOTIFY) &&
              !AcpiGbl_DeviceNotify.Handler))
        {
            Status = AE_NOT_EXIST;
            goto UnlockAndExit;
        }

        if (HandlerType & ACPI_SYSTEM_NOTIFY)
        {
            AcpiGbl_SystemNotify.Node    = NULL;
            AcpiGbl_SystemNotify.Handler = NULL;
            AcpiGbl_SystemNotify.Context = NULL;
        }

        if (HandlerType & ACPI_DEVICE_NOTIFY)
        {
            AcpiGbl_DeviceNotify.Node    = NULL;
            AcpiGbl_DeviceNotify.Handler = NULL;
            AcpiGbl_DeviceNotify.Context = NULL;
        }
    }

    /* All Other Objects */

    else
    {
        /* Notifies allowed on this object? */

        if (!AcpiEvIsNotifyObject (Node))
        {
            Status = AE_TYPE;
            goto UnlockAndExit;
        }

        /* Check for an existing internal object */

        ObjDesc = AcpiNsGetAttachedObject (Node);
        if (!ObjDesc)
        {
            Status = AE_NOT_EXIST;
            goto UnlockAndExit;
        }

        /* Object exists - make sure there's an existing handler */

        if (HandlerType & ACPI_SYSTEM_NOTIFY)
        {
            NotifyObj = ObjDesc->CommonNotify.SystemNotify;
            if (!NotifyObj)
            {
                Status = AE_NOT_EXIST;
                goto UnlockAndExit;
            }

            if (NotifyObj->Notify.Handler != Handler)
            {
                Status = AE_BAD_PARAMETER;
                goto UnlockAndExit;
            }

            /* Remove the handler */

            ObjDesc->CommonNotify.SystemNotify = NULL;
            AcpiUtRemoveReference (NotifyObj);
        }

        if (HandlerType & ACPI_DEVICE_NOTIFY)
        {
            NotifyObj = ObjDesc->CommonNotify.DeviceNotify;
            if (!NotifyObj)
            {
                Status = AE_NOT_EXIST;
                goto UnlockAndExit;
            }

            if (NotifyObj->Notify.Handler != Handler)
            {
                Status = AE_BAD_PARAMETER;
                goto UnlockAndExit;
            }

            /* Remove the handler */

            ObjDesc->CommonNotify.DeviceNotify = NULL;
            AcpiUtRemoveReference (NotifyObj);
        }
    }


UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
    return_ACPI_STATUS (Status);
}
Пример #7
0
ACPI_STATUS
AcpiInstallNotifyHandler (
    ACPI_HANDLE             Device,
    UINT32                  HandlerType,
    ACPI_NOTIFY_HANDLER     Handler,
    void                    *Context)
{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *NotifyObj;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (AcpiInstallNotifyHandler);


    /* Parameter validation */

    if ((!Device)  ||
        (!Handler) ||
        (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Convert and validate the device handle */

    Node = AcpiNsMapHandleToNode (Device);
    if (!Node)
    {
        Status = AE_BAD_PARAMETER;
        goto UnlockAndExit;
    }

    /*
     * Root Object:
     * Registering a notify handler on the root object indicates that the
     * caller wishes to receive notifications for all objects.  Note that
     * only one <external> global handler can be regsitered (per notify type).
     */
    if (Device == ACPI_ROOT_OBJECT)
    {
        /* Make sure the handler is not already installed */

        if (((HandlerType & ACPI_SYSTEM_NOTIFY) &&
                AcpiGbl_SystemNotify.Handler)       ||
            ((HandlerType & ACPI_DEVICE_NOTIFY) &&
                AcpiGbl_DeviceNotify.Handler))
        {
            Status = AE_ALREADY_EXISTS;
            goto UnlockAndExit;
        }

        if (HandlerType & ACPI_SYSTEM_NOTIFY)
        {
            AcpiGbl_SystemNotify.Node    = Node;
            AcpiGbl_SystemNotify.Handler = Handler;
            AcpiGbl_SystemNotify.Context = Context;
        }

        if (HandlerType & ACPI_DEVICE_NOTIFY)
        {
            AcpiGbl_DeviceNotify.Node    = Node;
            AcpiGbl_DeviceNotify.Handler = Handler;
            AcpiGbl_DeviceNotify.Context = Context;
        }

        /* Global notify handler installed */
    }

    /*
     * All Other Objects:
     * Caller will only receive notifications specific to the target object.
     * Note that only certain object types can receive notifications.
     */
    else
    {
        /* Notifies allowed on this object? */

        if (!AcpiEvIsNotifyObject (Node))
        {
            Status = AE_TYPE;
            goto UnlockAndExit;
        }

        /* Check for an existing internal object */

        ObjDesc = AcpiNsGetAttachedObject (Node);
        if (ObjDesc)
        {
            /* Object exists - make sure there's no handler */

            if (((HandlerType & ACPI_SYSTEM_NOTIFY) &&
                    ObjDesc->CommonNotify.SystemNotify)   ||
                ((HandlerType & ACPI_DEVICE_NOTIFY) &&
                    ObjDesc->CommonNotify.DeviceNotify))
            {
                Status = AE_ALREADY_EXISTS;
                goto UnlockAndExit;
            }
        }
        else
        {
            /* Create a new object */

            ObjDesc = AcpiUtCreateInternalObject (Node->Type);
            if (!ObjDesc)
            {
                Status = AE_NO_MEMORY;
                goto UnlockAndExit;
            }

            /* Attach new object to the Node */

            Status = AcpiNsAttachObject (Device, ObjDesc, Node->Type);

            /* Remove local reference to the object */

            AcpiUtRemoveReference (ObjDesc);
            if (ACPI_FAILURE (Status))
            {
                goto UnlockAndExit;
            }
        }

        /* Install the handler */

        NotifyObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_NOTIFY);
        if (!NotifyObj)
        {
            Status = AE_NO_MEMORY;
            goto UnlockAndExit;
        }

        NotifyObj->Notify.Node    = Node;
        NotifyObj->Notify.Handler = Handler;
        NotifyObj->Notify.Context = Context;

        if (HandlerType & ACPI_SYSTEM_NOTIFY)
        {
            ObjDesc->CommonNotify.SystemNotify = NotifyObj;
        }

        if (HandlerType & ACPI_DEVICE_NOTIFY)
        {
            ObjDesc->CommonNotify.DeviceNotify = NotifyObj;
        }

        if (HandlerType == ACPI_ALL_NOTIFY)
        {
            /* Extra ref if installed in both */

            AcpiUtAddReference (NotifyObj);
        }
    }


UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
    return_ACPI_STATUS (Status);
}
Пример #8
0
ACPI_STATUS
AcpiExOpcode_2A_0T_0R (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_NAMESPACE_NODE     *Node;
    UINT32                  Value;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
            AcpiPsGetOpcodeName (WalkState->Opcode));


    /* Examine the opcode */

    switch (WalkState->Opcode)
    {
    case AML_NOTIFY_OP:         /* Notify (NotifyObject, NotifyValue) */

        /* The first operand is a namespace node */

        Node = (ACPI_NAMESPACE_NODE *) Operand[0];

        /* Second value is the notify value */

        Value = (UINT32) Operand[1]->Integer.Value;

        /* Are notifies allowed on this object? */

        if (!AcpiEvIsNotifyObject (Node))
        {
            ACPI_ERROR ((AE_INFO,
                "Unexpected notify object type [%s]",
                AcpiUtGetTypeName (Node->Type)));

            Status = AE_AML_OPERAND_TYPE;
            break;
        }

#ifdef ACPI_GPE_NOTIFY_CHECK
        /*
         * GPE method wake/notify check.  Here, we want to ensure that we
         * don't receive any "DeviceWake" Notifies from a GPE _Lxx or _Exx
         * GPE method during system runtime.  If we do, the GPE is marked
         * as "wake-only" and disabled.
         *
         * 1) Is the Notify() value == DeviceWake?
         * 2) Is this a GPE deferred method?  (An _Lxx or _Exx method)
         * 3) Did the original GPE happen at system runtime?
         *    (versus during wake)
         *
         * If all three cases are true, this is a wake-only GPE that should
         * be disabled at runtime.
         */
        if (Value == 2)     /* DeviceWake */
        {
            Status = AcpiEvCheckForWakeOnlyGpe (WalkState->GpeEventInfo);
            if (ACPI_FAILURE (Status))
            {
                /* AE_WAKE_ONLY_GPE only error, means ignore this notify */

                return_ACPI_STATUS (AE_OK)
            }
        }
#endif

        /*
         * Dispatch the notify to the appropriate handler
         * NOTE: the request is queued for execution after this method
         * completes.  The notify handlers are NOT invoked synchronously
         * from this thread -- because handlers may in turn run other
         * control methods.
         */
        Status = AcpiEvQueueNotifyRequest (Node, Value);
        break;


    default:

        ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
    }