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git-svn-id: svn://kolibrios.org@2216 a494cfbc-eb01-0410-851d-a64ba20cac60
862 lines
24 KiB
C
862 lines
24 KiB
C
/******************************************************************************
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*
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* Module Name: utxface - External interfaces for "global" ACPI 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 - 2011, 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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#define __UTXFACE_C__
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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 "acdebug.h"
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#include "actables.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME ("utxface")
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#ifndef ACPI_ASL_COMPILER
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/*******************************************************************************
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*
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* FUNCTION: AcpiInitializeSubsystem
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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: Initializes all global variables. This is the first function
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* called, so any early initialization belongs here.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiInitializeSubsystem (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem);
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AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
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ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
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/* Initialize the OS-Dependent layer */
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Status = AcpiOsInitialize ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
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return_ACPI_STATUS (Status);
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}
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/* Initialize all globals used by the subsystem */
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Status = AcpiUtInitGlobals ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals"));
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return_ACPI_STATUS (Status);
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}
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/* Create the default mutex objects */
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Status = AcpiUtMutexInitialize ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
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return_ACPI_STATUS (Status);
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}
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/*
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* Initialize the namespace manager and
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* the root of the namespace tree
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*/
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Status = AcpiNsRootInitialize ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
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return_ACPI_STATUS (Status);
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}
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/* Initialize the global OSI interfaces list with the static names */
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Status = AcpiUtInitializeInterfaces ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization"));
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return_ACPI_STATUS (Status);
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}
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/* If configured, initialize the AML debugger */
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ACPI_DEBUGGER_EXEC (Status = AcpiDbInitialize ());
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiInitializeSubsystem)
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnableSubsystem
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*
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* PARAMETERS: Flags - Init/enable Options
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*
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* RETURN: Status
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*
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* DESCRIPTION: Completes the subsystem initialization including hardware.
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* Puts system into ACPI mode if it isn't already.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnableSubsystem (
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UINT32 Flags)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);
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/* Enable ACPI mode */
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if (!(Flags & ACPI_NO_ACPI_ENABLE))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
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AcpiGbl_OriginalMode = AcpiHwGetMode();
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Status = AcpiEnable ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Obtain a permanent mapping for the FACS. This is required for the
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* Global Lock and the Firmware Waking Vector
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*/
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Status = AcpiTbInitializeFacs ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
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return_ACPI_STATUS (Status);
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}
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/*
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* Install the default OpRegion handlers. These are installed unless
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* other handlers have already been installed via the
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* InstallAddressSpaceHandler interface.
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*/
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if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
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"[Init] Installing default address space handlers\n"));
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Status = AcpiEvInstallRegionHandlers ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Initialize ACPI Event handling (Fixed and General Purpose)
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*
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* Note1: We must have the hardware and events initialized before we can
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* execute any control methods safely. Any control method can require
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* ACPI hardware support, so the hardware must be fully initialized before
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* any method execution!
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*
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* Note2: Fixed events are initialized and enabled here. GPEs are
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* initialized, but cannot be enabled until after the hardware is
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* completely initialized (SCI and GlobalLock activated) and the various
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* initialization control methods are run (_REG, _STA, _INI) on the
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* entire namespace.
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*/
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if (!(Flags & ACPI_NO_EVENT_INIT))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
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"[Init] Initializing ACPI events\n"));
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Status = AcpiEvInitializeEvents ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Install the SCI handler and Global Lock handler. This completes the
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* hardware initialization.
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*/
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if (!(Flags & ACPI_NO_HANDLER_INIT))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
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"[Init] Installing SCI/GL handlers\n"));
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Status = AcpiEvInstallXruptHandlers ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnableSubsystem)
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/*******************************************************************************
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*
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* FUNCTION: AcpiInitializeObjects
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*
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* PARAMETERS: Flags - Init/enable Options
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*
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* RETURN: Status
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*
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* DESCRIPTION: Completes namespace initialization by initializing device
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* objects and executing AML code for Regions, buffers, etc.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiInitializeObjects (
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UINT32 Flags)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
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/*
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* Run all _REG methods
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*
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* Note: Any objects accessed by the _REG methods will be automatically
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* initialized, even if they contain executable AML (see the call to
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* AcpiNsInitializeObjects below).
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*/
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if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
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"[Init] Executing _REG OpRegion methods\n"));
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Status = AcpiEvInitializeOpRegions ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Execute any module-level code that was detected during the table load
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* phase. Although illegal since ACPI 2.0, there are many machines that
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* contain this type of code. Each block of detected executable AML code
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* outside of any control method is wrapped with a temporary control
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* method object and placed on a global list. The methods on this list
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* are executed below.
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*/
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AcpiNsExecModuleCodeList ();
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/*
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* Initialize the objects that remain uninitialized. This runs the
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* executable AML that may be part of the declaration of these objects:
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* OperationRegions, BufferFields, Buffers, and Packages.
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*/
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if (!(Flags & ACPI_NO_OBJECT_INIT))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
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"[Init] Completing Initialization of ACPI Objects\n"));
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Status = AcpiNsInitializeObjects ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Initialize all device objects in the namespace. This runs the device
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* _STA and _INI methods.
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*/
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if (!(Flags & ACPI_NO_DEVICE_INIT))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
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"[Init] Initializing ACPI Devices\n"));
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Status = AcpiNsInitializeDevices ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Empty the caches (delete the cached objects) on the assumption that
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* the table load filled them up more than they will be at runtime --
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* thus wasting non-paged memory.
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*/
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Status = AcpiPurgeCachedObjects ();
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AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiInitializeObjects)
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#endif
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/*******************************************************************************
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*
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* FUNCTION: AcpiTerminate
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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: Shutdown the ACPICA subsystem and release all resources.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTerminate (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiTerminate);
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/* Just exit if subsystem is already shutdown */
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if (AcpiGbl_Shutdown)
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{
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ACPI_ERROR ((AE_INFO, "ACPI Subsystem is already terminated"));
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return_ACPI_STATUS (AE_OK);
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}
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/* Subsystem appears active, go ahead and shut it down */
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AcpiGbl_Shutdown = TRUE;
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AcpiGbl_StartupFlags = 0;
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
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/* Terminate the AML Debugger if present */
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ACPI_DEBUGGER_EXEC (AcpiGbl_DbTerminateThreads = TRUE);
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/* Shutdown and free all resources */
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AcpiUtSubsystemShutdown ();
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/* Free the mutex objects */
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AcpiUtMutexTerminate ();
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#ifdef ACPI_DEBUGGER
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/* Shut down the debugger */
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AcpiDbTerminate ();
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#endif
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/* Now we can shutdown the OS-dependent layer */
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Status = AcpiOsTerminate ();
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiTerminate)
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#ifndef ACPI_ASL_COMPILER
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/*******************************************************************************
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*
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* FUNCTION: AcpiSubsystemStatus
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*
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* PARAMETERS: None
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*
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* RETURN: Status of the ACPI subsystem
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*
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* DESCRIPTION: Other drivers that use the ACPI subsystem should call this
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* before making any other calls, to ensure the subsystem
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* initialized successfully.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSubsystemStatus (
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void)
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{
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if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
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{
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return (AE_OK);
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}
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else
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{
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return (AE_ERROR);
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}
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}
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ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus)
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetSystemInfo
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*
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* PARAMETERS: OutBuffer - A buffer to receive the resources for the
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* device
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*
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* RETURN: Status - the status of the call
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*
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* DESCRIPTION: This function is called to get information about the current
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* state of the ACPI subsystem. It will return system information
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* in the OutBuffer.
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*
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* If the function fails an appropriate status will be returned
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* and the value of OutBuffer is undefined.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetSystemInfo (
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ACPI_BUFFER *OutBuffer)
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{
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ACPI_SYSTEM_INFO *InfoPtr;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);
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/* 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)
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInstallInterface
|
|
*
|
|
* PARAMETERS: InterfaceName - The interface to install
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install an _OSI interface to the global list
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInstallInterface (
|
|
ACPI_STRING InterfaceName)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_INTERFACE_INFO *InterfaceInfo;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!InterfaceName || (ACPI_STRLEN (InterfaceName) == 0))
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
(void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
|
|
|
|
/* Check if the interface name is already in the global list */
|
|
|
|
InterfaceInfo = AcpiUtGetInterface (InterfaceName);
|
|
if (InterfaceInfo)
|
|
{
|
|
/*
|
|
* The interface already exists in the list. This is OK if the
|
|
* interface has been marked invalid -- just clear the bit.
|
|
*/
|
|
if (InterfaceInfo->Flags & ACPI_OSI_INVALID)
|
|
{
|
|
InterfaceInfo->Flags &= ~ACPI_OSI_INVALID;
|
|
Status = AE_OK;
|
|
}
|
|
else
|
|
{
|
|
Status = AE_ALREADY_EXISTS;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* New interface name, install into the global list */
|
|
|
|
Status = AcpiUtInstallInterface (InterfaceName);
|
|
}
|
|
|
|
AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
|
|
return (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiInstallInterface)
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRemoveInterface
|
|
*
|
|
* PARAMETERS: InterfaceName - The interface to remove
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove an _OSI interface from the global list
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRemoveInterface (
|
|
ACPI_STRING InterfaceName)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!InterfaceName || (ACPI_STRLEN (InterfaceName) == 0))
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
(void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
|
|
|
|
Status = AcpiUtRemoveInterface (InterfaceName);
|
|
|
|
AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
|
|
return (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiRemoveInterface)
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInstallInterfaceHandler
|
|
*
|
|
* PARAMETERS: Handler - The _OSI interface handler to install
|
|
* NULL means "remove existing handler"
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
|
|
* invoked during execution of the internal implementation of
|
|
* _OSI. A NULL handler simply removes any existing handler.
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInstallInterfaceHandler (
|
|
ACPI_INTERFACE_HANDLER Handler)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
(void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
|
|
|
|
if (Handler && AcpiGbl_InterfaceHandler)
|
|
{
|
|
Status = AE_ALREADY_EXISTS;
|
|
}
|
|
else
|
|
{
|
|
AcpiGbl_InterfaceHandler = Handler;
|
|
}
|
|
|
|
AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
|
|
return (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiInstallInterfaceHandler)
|
|
|
|
#endif /* !ACPI_ASL_COMPILER */
|
|
|