forked from KolibriOS/kolibrios
741 lines
23 KiB
C
741 lines
23 KiB
C
/******************************************************************************
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*
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* Module Name: evmisc - Miscellaneous event manager support functions
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "acpi.h"
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evmisc")
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/* Local prototypes */
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static void ACPI_SYSTEM_XFACE
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AcpiEvNotifyDispatch (
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void *Context);
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static UINT32
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AcpiEvGlobalLockHandler (
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void *Context);
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static ACPI_STATUS
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AcpiEvRemoveGlobalLockHandler (
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void);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvIsNotifyObject
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*
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* PARAMETERS: Node - Node to check
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*
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* RETURN: TRUE if notifies allowed on this object
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*
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* DESCRIPTION: Check type of node for a object that supports notifies.
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*
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* TBD: This could be replaced by a flag bit in the node.
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*
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******************************************************************************/
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BOOLEAN
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AcpiEvIsNotifyObject (
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ACPI_NAMESPACE_NODE *Node)
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{
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switch (Node->Type)
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{
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_THERMAL:
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/*
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* These are the ONLY objects that can receive ACPI notifications
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*/
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return (TRUE);
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default:
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return (FALSE);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvQueueNotifyRequest
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*
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* PARAMETERS: Node - NS node for the notified object
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* NotifyValue - Value from the Notify() request
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*
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* RETURN: Status
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*
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* DESCRIPTION: Dispatch a device notification event to a previously
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* installed handler.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvQueueNotifyRequest (
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ACPI_NAMESPACE_NODE *Node,
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UINT32 NotifyValue)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_OPERAND_OBJECT *HandlerObj = NULL;
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ACPI_GENERIC_STATE *NotifyInfo;
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_NAME (EvQueueNotifyRequest);
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/*
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* For value 3 (Ejection Request), some device method may need to be run.
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* For value 2 (Device Wake) if _PRW exists, the _PS0 method may need
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* to be run.
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* For value 0x80 (Status Change) on the power button or sleep button,
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* initiate soft-off or sleep operation?
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
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AcpiUtGetNodeName (Node), Node, NotifyValue,
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AcpiUtGetNotifyName (NotifyValue)));
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/* Get the notify object attached to the NS Node */
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ObjDesc = AcpiNsGetAttachedObject (Node);
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if (ObjDesc)
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{
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/* We have the notify object, Get the right handler */
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switch (Node->Type)
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{
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/* Notify allowed only on these types */
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_THERMAL:
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case ACPI_TYPE_PROCESSOR:
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if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
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{
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HandlerObj = ObjDesc->CommonNotify.SystemNotify;
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}
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else
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{
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HandlerObj = ObjDesc->CommonNotify.DeviceNotify;
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}
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break;
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default:
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/* All other types are not supported */
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return (AE_TYPE);
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}
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}
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/*
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* If there is any handler to run, schedule the dispatcher.
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* Check for:
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* 1) Global system notify handler
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* 2) Global device notify handler
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* 3) Per-device notify handler
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*/
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if ((AcpiGbl_SystemNotify.Handler &&
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(NotifyValue <= ACPI_MAX_SYS_NOTIFY)) ||
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(AcpiGbl_DeviceNotify.Handler &&
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(NotifyValue > ACPI_MAX_SYS_NOTIFY)) ||
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HandlerObj)
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{
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NotifyInfo = AcpiUtCreateGenericState ();
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if (!NotifyInfo)
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{
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return (AE_NO_MEMORY);
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}
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if (!HandlerObj)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"Executing system notify handler for Notify (%4.4s, %X) "
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"node %p\n",
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AcpiUtGetNodeName (Node), NotifyValue, Node));
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}
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NotifyInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;
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NotifyInfo->Notify.Node = Node;
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NotifyInfo->Notify.Value = (UINT16) NotifyValue;
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NotifyInfo->Notify.HandlerObj = HandlerObj;
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Status = AcpiOsExecute (
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OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, NotifyInfo);
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if (ACPI_FAILURE (Status))
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{
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AcpiUtDeleteGenericState (NotifyInfo);
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}
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}
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else
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{
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/* There is no notify handler (per-device or system) for this device */
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"No notify handler for Notify (%4.4s, %X) node %p\n",
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AcpiUtGetNodeName (Node), NotifyValue, Node));
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}
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return (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvNotifyDispatch
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*
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* PARAMETERS: Context - To be passed to the notify handler
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*
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* RETURN: None.
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*
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* DESCRIPTION: Dispatch a device notification event to a previously
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* installed handler.
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*
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******************************************************************************/
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static void ACPI_SYSTEM_XFACE
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AcpiEvNotifyDispatch (
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void *Context)
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{
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ACPI_GENERIC_STATE *NotifyInfo = (ACPI_GENERIC_STATE *) Context;
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ACPI_NOTIFY_HANDLER GlobalHandler = NULL;
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void *GlobalContext = NULL;
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_FUNCTION_ENTRY ();
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/*
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* We will invoke a global notify handler if installed. This is done
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* _before_ we invoke the per-device handler attached to the device.
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*/
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if (NotifyInfo->Notify.Value <= ACPI_MAX_SYS_NOTIFY)
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{
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/* Global system notification handler */
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if (AcpiGbl_SystemNotify.Handler)
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{
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GlobalHandler = AcpiGbl_SystemNotify.Handler;
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GlobalContext = AcpiGbl_SystemNotify.Context;
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}
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}
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else
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{
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/* Global driver notification handler */
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if (AcpiGbl_DeviceNotify.Handler)
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{
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GlobalHandler = AcpiGbl_DeviceNotify.Handler;
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GlobalContext = AcpiGbl_DeviceNotify.Context;
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}
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}
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/* Invoke the system handler first, if present */
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if (GlobalHandler)
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{
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GlobalHandler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value,
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GlobalContext);
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}
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/* Now invoke the per-device handler, if present */
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HandlerObj = NotifyInfo->Notify.HandlerObj;
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if (HandlerObj)
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{
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HandlerObj->Notify.Handler (NotifyInfo->Notify.Node,
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NotifyInfo->Notify.Value,
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HandlerObj->Notify.Context);
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}
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/* All done with the info object */
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AcpiUtDeleteGenericState (NotifyInfo);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvGlobalLockHandler
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*
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* PARAMETERS: Context - From thread interface, not used
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*
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* RETURN: ACPI_INTERRUPT_HANDLED
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*
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* DESCRIPTION: Invoked directly from the SCI handler when a global lock
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* release interrupt occurs. Attempt to acquire the global lock,
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* if successful, signal the thread waiting for the lock.
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*
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* NOTE: Assumes that the semaphore can be signaled from interrupt level. If
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* this is not possible for some reason, a separate thread will have to be
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* scheduled to do this.
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*
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******************************************************************************/
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static UINT32
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AcpiEvGlobalLockHandler (
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void *Context)
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{
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BOOLEAN Acquired = FALSE;
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ACPI_STATUS Status;
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/*
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* Attempt to get the lock.
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*
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* If we don't get it now, it will be marked pending and we will
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* take another interrupt when it becomes free.
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*/
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ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_FACS, Acquired);
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if (Acquired)
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{
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/* Got the lock, now wake the thread waiting for it */
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AcpiGbl_GlobalLockAcquired = TRUE;
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/* Send a unit to the semaphore */
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Status = AcpiOsSignalSemaphore (AcpiGbl_GlobalLockSemaphore, 1);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO, "Could not signal Global Lock semaphore"));
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}
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}
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return (ACPI_INTERRUPT_HANDLED);
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}
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|
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvInitGlobalLockHandler
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install a handler for the global lock release event
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*
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******************************************************************************/
|
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|
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ACPI_STATUS
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AcpiEvInitGlobalLockHandler (
|
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void)
|
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{
|
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ACPI_STATUS Status;
|
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|
|
|
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ACPI_FUNCTION_TRACE (EvInitGlobalLockHandler);
|
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|
|
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/* Attempt installation of the global lock handler */
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|
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Status = AcpiInstallFixedEventHandler (ACPI_EVENT_GLOBAL,
|
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AcpiEvGlobalLockHandler, NULL);
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|
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/*
|
|
* If the global lock does not exist on this platform, the attempt to
|
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* enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
|
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* Map to AE_OK, but mark global lock as not present. Any attempt to
|
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* actually use the global lock will be flagged with an error.
|
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*/
|
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if (Status == AE_NO_HARDWARE_RESPONSE)
|
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{
|
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ACPI_ERROR ((AE_INFO,
|
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"No response from Global Lock hardware, disabling lock"));
|
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|
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AcpiGbl_GlobalLockPresent = FALSE;
|
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return_ACPI_STATUS (AE_OK);
|
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}
|
|
|
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AcpiGbl_GlobalLockPresent = TRUE;
|
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return_ACPI_STATUS (Status);
|
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}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
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* FUNCTION: AcpiEvRemoveGlobalLockHandler
|
|
*
|
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* PARAMETERS: None
|
|
*
|
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* RETURN: Status
|
|
*
|
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* DESCRIPTION: Remove the handler for the Global Lock
|
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*
|
|
******************************************************************************/
|
|
|
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static ACPI_STATUS
|
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AcpiEvRemoveGlobalLockHandler (
|
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void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
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ACPI_FUNCTION_TRACE (EvRemoveGlobalLockHandler);
|
|
|
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AcpiGbl_GlobalLockPresent = FALSE;
|
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Status = AcpiRemoveFixedEventHandler (ACPI_EVENT_GLOBAL,
|
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AcpiEvGlobalLockHandler);
|
|
|
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return_ACPI_STATUS (Status);
|
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}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
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* FUNCTION: AcpiEvAcquireGlobalLock
|
|
*
|
|
* PARAMETERS: Timeout - Max time to wait for the lock, in millisec.
|
|
*
|
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* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Attempt to gain ownership of the Global Lock.
|
|
*
|
|
* MUTEX: Interpreter must be locked
|
|
*
|
|
* Note: The original implementation allowed multiple threads to "acquire" the
|
|
* Global Lock, and the OS would hold the lock until the last thread had
|
|
* released it. However, this could potentially starve the BIOS out of the
|
|
* lock, especially in the case where there is a tight handshake between the
|
|
* Embedded Controller driver and the BIOS. Therefore, this implementation
|
|
* allows only one thread to acquire the HW Global Lock at a time, and makes
|
|
* the global lock appear as a standard mutex on the OS side.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvAcquireGlobalLock (
|
|
UINT16 Timeout)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
BOOLEAN Acquired = FALSE;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvAcquireGlobalLock);
|
|
|
|
|
|
/*
|
|
* Only one thread can acquire the GL at a time, the GlobalLockMutex
|
|
* enforces this. This interface releases the interpreter if we must wait.
|
|
*/
|
|
Status = AcpiExSystemWaitMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex,
|
|
Timeout);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Update the global lock handle and check for wraparound. The handle is
|
|
* only used for the external global lock interfaces, but it is updated
|
|
* here to properly handle the case where a single thread may acquire the
|
|
* lock via both the AML and the AcpiAcquireGlobalLock interfaces. The
|
|
* handle is therefore updated on the first acquire from a given thread
|
|
* regardless of where the acquisition request originated.
|
|
*/
|
|
AcpiGbl_GlobalLockHandle++;
|
|
if (AcpiGbl_GlobalLockHandle == 0)
|
|
{
|
|
AcpiGbl_GlobalLockHandle = 1;
|
|
}
|
|
|
|
/*
|
|
* Make sure that a global lock actually exists. If not, just treat the
|
|
* lock as a standard mutex.
|
|
*/
|
|
if (!AcpiGbl_GlobalLockPresent)
|
|
{
|
|
AcpiGbl_GlobalLockAcquired = TRUE;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Attempt to acquire the actual hardware lock */
|
|
|
|
ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_FACS, Acquired);
|
|
if (Acquired)
|
|
{
|
|
/* We got the lock */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Acquired hardware Global Lock\n"));
|
|
|
|
AcpiGbl_GlobalLockAcquired = TRUE;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Did not get the lock. The pending bit was set above, and we must now
|
|
* wait until we get the global lock released interrupt.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Waiting for hardware Global Lock\n"));
|
|
|
|
/*
|
|
* Wait for handshake with the global lock interrupt handler.
|
|
* This interface releases the interpreter if we must wait.
|
|
*/
|
|
Status = AcpiExSystemWaitSemaphore (AcpiGbl_GlobalLockSemaphore,
|
|
ACPI_WAIT_FOREVER);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvReleaseGlobalLock
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Releases ownership of the Global Lock.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvReleaseGlobalLock (
|
|
void)
|
|
{
|
|
BOOLEAN Pending = FALSE;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvReleaseGlobalLock);
|
|
|
|
|
|
/* Lock must be already acquired */
|
|
|
|
if (!AcpiGbl_GlobalLockAcquired)
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Cannot release the ACPI Global Lock, it has not been acquired"));
|
|
return_ACPI_STATUS (AE_NOT_ACQUIRED);
|
|
}
|
|
|
|
if (AcpiGbl_GlobalLockPresent)
|
|
{
|
|
/* Allow any thread to release the lock */
|
|
|
|
ACPI_RELEASE_GLOBAL_LOCK (AcpiGbl_FACS, Pending);
|
|
|
|
/*
|
|
* If the pending bit was set, we must write GBL_RLS to the control
|
|
* register
|
|
*/
|
|
if (Pending)
|
|
{
|
|
Status = AcpiWriteBitRegister (
|
|
ACPI_BITREG_GLOBAL_LOCK_RELEASE, ACPI_ENABLE_EVENT);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Released hardware Global Lock\n"));
|
|
}
|
|
|
|
AcpiGbl_GlobalLockAcquired = FALSE;
|
|
|
|
/* Release the local GL mutex */
|
|
|
|
AcpiOsReleaseMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvTerminate
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: none
|
|
*
|
|
* DESCRIPTION: Disable events and free memory allocated for table storage.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiEvTerminate (
|
|
void)
|
|
{
|
|
UINT32 i;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvTerminate);
|
|
|
|
|
|
if (AcpiGbl_EventsInitialized)
|
|
{
|
|
/*
|
|
* Disable all event-related functionality. In all cases, on error,
|
|
* print a message but obviously we don't abort.
|
|
*/
|
|
|
|
/* Disable all fixed events */
|
|
|
|
for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
|
|
{
|
|
Status = AcpiDisableEvent (i, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Could not disable fixed event %u", (UINT32) i));
|
|
}
|
|
}
|
|
|
|
/* Disable all GPEs in all GPE blocks */
|
|
|
|
Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
|
|
|
|
/* Remove SCI handler */
|
|
|
|
Status = AcpiEvRemoveSciHandler ();
|
|
if (ACPI_FAILURE(Status))
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Could not remove SCI handler"));
|
|
}
|
|
|
|
Status = AcpiEvRemoveGlobalLockHandler ();
|
|
if (ACPI_FAILURE(Status))
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Could not remove Global Lock handler"));
|
|
}
|
|
}
|
|
|
|
/* Deallocate all handler objects installed within GPE info structs */
|
|
|
|
Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL);
|
|
|
|
/* Return to original mode if necessary */
|
|
|
|
if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY)
|
|
{
|
|
Status = AcpiDisable ();
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_WARNING ((AE_INFO, "AcpiDisable failed"));
|
|
}
|
|
}
|
|
return_VOID;
|
|
}
|
|
|