1189 lines
32 KiB
C
1189 lines
32 KiB
C
/******************************************************************************
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*
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* Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
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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
|
|
* 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 __EVXFEVNT_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 "actables.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evxfevnt")
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/* Local prototypes */
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static ACPI_STATUS
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AcpiEvGetGpeDevice (
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ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
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ACPI_GPE_BLOCK_INFO *GpeBlock,
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void *Context);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnable
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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: Transfers the system into ACPI mode.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnable (
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void)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE (AcpiEnable);
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/* ACPI tables must be present */
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if (!AcpiTbTablesLoaded ())
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{
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/* Check current mode */
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if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
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}
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else
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{
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/* Transition to ACPI mode */
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Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode"));
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
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"Transition to ACPI mode successful\n"));
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}
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnable)
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/*******************************************************************************
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*
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* FUNCTION: AcpiDisable
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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: Transfers the system into LEGACY (non-ACPI) mode.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDisable (
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void)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE (AcpiDisable);
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if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
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"System is already in legacy (non-ACPI) mode\n"));
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}
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else
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{
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/* Transition to LEGACY mode */
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Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO,
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"Could not exit ACPI mode to legacy mode"));
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
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}
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiDisable)
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnableEvent
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*
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* PARAMETERS: Event - The fixed eventto be enabled
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* Flags - Reserved
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enable an ACPI event (fixed)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnableEvent (
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UINT32 Event,
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UINT32 Flags)
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{
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ACPI_STATUS Status = AE_OK;
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UINT32 Value;
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ACPI_FUNCTION_TRACE (AcpiEnableEvent);
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/* Decode the Fixed Event */
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if (Event > ACPI_EVENT_MAX)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* Enable the requested fixed event (by writing a one to the enable
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* register bit)
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*/
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Status = AcpiWriteBitRegister (
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AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
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ACPI_ENABLE_EVENT);
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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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/* Make sure that the hardware responded */
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Status = AcpiReadBitRegister (
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AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value);
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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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if (Value != 1)
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{
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ACPI_ERROR ((AE_INFO,
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"Could not enable %s event", AcpiUtGetEventName (Event)));
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return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
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}
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnableEvent)
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/*******************************************************************************
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*
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* FUNCTION: AcpiGpeWakeup
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*
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* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
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* GpeNumber - GPE level within the GPE block
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* Action - Enable or Disable
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*
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* RETURN: Status
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*
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* DESCRIPTION: Set or clear the GPE's wakeup enable mask bit.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGpeWakeup (
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ACPI_HANDLE GpeDevice,
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UINT32 GpeNumber,
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UINT8 Action)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
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ACPI_CPU_FLAGS Flags;
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UINT32 RegisterBit;
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|
|
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ACPI_FUNCTION_TRACE (AcpiGpeWakeup);
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|
|
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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/* Ensure that we have a valid GPE number */
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
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if (!GpeEventInfo)
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{
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Status = AE_BAD_PARAMETER;
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goto UnlockAndExit;
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}
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|
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GpeRegisterInfo = GpeEventInfo->RegisterInfo;
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if (!GpeRegisterInfo)
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{
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Status = AE_NOT_EXIST;
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goto UnlockAndExit;
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}
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RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
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|
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/* Perform the action */
|
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switch (Action)
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{
|
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case ACPI_GPE_ENABLE:
|
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ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
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break;
|
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|
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case ACPI_GPE_DISABLE:
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ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
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break;
|
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|
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default:
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ACPI_ERROR ((AE_INFO, "%u, Invalid action", Action));
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Status = AE_BAD_PARAMETER;
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break;
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}
|
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UnlockAndExit:
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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return_ACPI_STATUS (Status);
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}
|
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|
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ACPI_EXPORT_SYMBOL (AcpiGpeWakeup)
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|
|
|
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnableGpe
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*
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* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
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* GpeNumber - GPE level within the GPE block
|
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*
|
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* RETURN: Status
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*
|
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* DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
|
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* hardware-enabled.
|
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*
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******************************************************************************/
|
|
|
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ACPI_STATUS
|
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AcpiEnableGpe (
|
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ACPI_HANDLE GpeDevice,
|
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UINT32 GpeNumber)
|
|
{
|
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ACPI_STATUS Status = AE_OK;
|
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
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ACPI_CPU_FLAGS Flags;
|
|
|
|
|
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ACPI_FUNCTION_TRACE (AcpiEnableGpe);
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|
|
|
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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|
|
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/* Ensure that we have a valid GPE number */
|
|
|
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
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if (!GpeEventInfo)
|
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{
|
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Status = AE_BAD_PARAMETER;
|
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goto UnlockAndExit;
|
|
}
|
|
|
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if (GpeEventInfo->RuntimeCount == ACPI_UINT8_MAX)
|
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{
|
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Status = AE_LIMIT; /* Too many references */
|
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goto UnlockAndExit;
|
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}
|
|
|
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GpeEventInfo->RuntimeCount++;
|
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if (GpeEventInfo->RuntimeCount == 1)
|
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{
|
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Status = AcpiEvUpdateGpeEnableMask (GpeEventInfo);
|
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if (ACPI_SUCCESS (Status))
|
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{
|
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Status = AcpiEvEnableGpe (GpeEventInfo);
|
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}
|
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if (ACPI_FAILURE (Status))
|
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{
|
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GpeEventInfo->RuntimeCount--;
|
|
}
|
|
}
|
|
|
|
UnlockAndExit:
|
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
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return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiEnableGpe)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDisableGpe
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a reference to a GPE. When the last reference is
|
|
* removed, only then is the GPE disabled (for runtime GPEs), or
|
|
* the GPE mask bit disabled (for wake GPEs)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDisableGpe (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiDisableGpe);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Hardware-disable a runtime GPE on removal of the last reference */
|
|
|
|
if (!GpeEventInfo->RuntimeCount)
|
|
{
|
|
Status = AE_LIMIT; /* There are no references to remove */
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
GpeEventInfo->RuntimeCount--;
|
|
if (!GpeEventInfo->RuntimeCount)
|
|
{
|
|
Status = AcpiEvUpdateGpeEnableMask (GpeEventInfo);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
|
|
}
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
GpeEventInfo->RuntimeCount++;
|
|
}
|
|
}
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiDisableGpe)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiSetGpe
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
* Action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable or disable an individual GPE. This function bypasses
|
|
* the reference count mechanism used in the AcpiEnableGpe and
|
|
* AcpiDisableGpe interfaces -- and should be used with care.
|
|
*
|
|
* Note: Typically used to disable a runtime GPE for short period of time,
|
|
* then re-enable it, without disturbing the existing reference counts. This
|
|
* is useful, for example, in the Embedded Controller (EC) driver.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiSetGpe (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber,
|
|
UINT8 Action)
|
|
{
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_STATUS Status;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiSetGpe);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Perform the action */
|
|
|
|
switch (Action)
|
|
{
|
|
case ACPI_GPE_ENABLE:
|
|
Status = AcpiEvEnableGpe (GpeEventInfo);
|
|
break;
|
|
|
|
case ACPI_GPE_DISABLE:
|
|
Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
|
|
break;
|
|
|
|
default:
|
|
Status = AE_BAD_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiSetGpe)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDisableEvent
|
|
*
|
|
* PARAMETERS: Event - The fixed eventto be enabled
|
|
* Flags - Reserved
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable an ACPI event (fixed)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDisableEvent (
|
|
UINT32 Event,
|
|
UINT32 Flags)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
UINT32 Value;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiDisableEvent);
|
|
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (Event > ACPI_EVENT_MAX)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Disable the requested fixed event (by writing a zero to the enable
|
|
* register bit)
|
|
*/
|
|
Status = AcpiWriteBitRegister (
|
|
AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
|
|
ACPI_DISABLE_EVENT);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiReadBitRegister (
|
|
AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
if (Value != 0)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Could not disable %s events", AcpiUtGetEventName (Event)));
|
|
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiDisableEvent)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiClearEvent
|
|
*
|
|
* PARAMETERS: Event - The fixed event to be cleared
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear an ACPI event (fixed)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiClearEvent (
|
|
UINT32 Event)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiClearEvent);
|
|
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (Event > ACPI_EVENT_MAX)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Clear the requested fixed event (By writing a one to the status
|
|
* register bit)
|
|
*/
|
|
Status = AcpiWriteBitRegister (
|
|
AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
|
|
ACPI_CLEAR_STATUS);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiClearEvent)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiClearGpe
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear an ACPI event (general purpose)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiClearGpe (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiClearGpe);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiHwClearGpe (GpeEventInfo);
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiClearGpe)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetEventStatus
|
|
*
|
|
* PARAMETERS: Event - The fixed event
|
|
* EventStatus - Where the current status of the event will
|
|
* be returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Obtains and returns the current status of the event
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetEventStatus (
|
|
UINT32 Event,
|
|
ACPI_EVENT_STATUS *EventStatus)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiGetEventStatus);
|
|
|
|
|
|
if (!EventStatus)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (Event > ACPI_EVENT_MAX)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the status of the requested fixed event */
|
|
|
|
Status = AcpiReadBitRegister (
|
|
AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetEventStatus)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetGpeStatus
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
* EventStatus - Where the current status of the event will
|
|
* be returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get status of an event (general purpose)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetGpeStatus (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber,
|
|
ACPI_EVENT_STATUS *EventStatus)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiGetGpeStatus);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Obtain status on the requested GPE number */
|
|
|
|
Status = AcpiHwGetGpeStatus (GpeEventInfo, EventStatus);
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetGpeStatus)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInstallGpeBlock
|
|
*
|
|
* PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
|
|
* GpeBlockAddress - Address and SpaceID
|
|
* RegisterCount - Number of GPE register pairs in the block
|
|
* InterruptNumber - H/W interrupt for the block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create and Install a block of GPE registers
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInstallGpeBlock (
|
|
ACPI_HANDLE GpeDevice,
|
|
ACPI_GENERIC_ADDRESS *GpeBlockAddress,
|
|
UINT32 RegisterCount,
|
|
UINT32 InterruptNumber)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiInstallGpeBlock);
|
|
|
|
|
|
if ((!GpeDevice) ||
|
|
(!GpeBlockAddress) ||
|
|
(!RegisterCount))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsValidateHandle (GpeDevice);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* For user-installed GPE Block Devices, the GpeBlockBaseNumber
|
|
* is always zero
|
|
*/
|
|
Status = AcpiEvCreateGpeBlock (Node, GpeBlockAddress, RegisterCount,
|
|
0, InterruptNumber, &GpeBlock);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Install block in the DeviceObject attached to the node */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
/*
|
|
* No object, create a new one (Device nodes do not always have
|
|
* an attached object)
|
|
*/
|
|
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_DEVICE);
|
|
|
|
/* Remove local reference to the object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
|
|
/* Now install the GPE block in the DeviceObject */
|
|
|
|
ObjDesc->Device.GpeBlock = GpeBlock;
|
|
|
|
/* Run the _PRW methods and enable the runtime GPEs in the new block */
|
|
|
|
Status = AcpiEvInitializeGpeBlock (Node, GpeBlock);
|
|
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiInstallGpeBlock)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRemoveGpeBlock
|
|
*
|
|
* PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a previously installed block of GPE registers
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRemoveGpeBlock (
|
|
ACPI_HANDLE GpeDevice)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiRemoveGpeBlock);
|
|
|
|
|
|
if (!GpeDevice)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsValidateHandle (GpeDevice);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Get the DeviceObject attached to the node */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc ||
|
|
!ObjDesc->Device.GpeBlock)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_OBJECT);
|
|
}
|
|
|
|
/* Delete the GPE block (but not the DeviceObject) */
|
|
|
|
Status = AcpiEvDeleteGpeBlock (ObjDesc->Device.GpeBlock);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
ObjDesc->Device.GpeBlock = NULL;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiRemoveGpeBlock)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetGpeDevice
|
|
*
|
|
* PARAMETERS: Index - System GPE index (0-CurrentGpeCount)
|
|
* GpeDevice - Where the parent GPE Device is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Obtain the GPE device associated with the input index. A NULL
|
|
* gpe device indicates that the gpe number is contained in one of
|
|
* the FADT-defined gpe blocks. Otherwise, the GPE block device.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetGpeDevice (
|
|
UINT32 Index,
|
|
ACPI_HANDLE *GpeDevice)
|
|
{
|
|
ACPI_GPE_DEVICE_INFO Info;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiGetGpeDevice);
|
|
|
|
|
|
if (!GpeDevice)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (Index >= AcpiCurrentGpeCount)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Setup and walk the GPE list */
|
|
|
|
Info.Index = Index;
|
|
Info.Status = AE_NOT_EXIST;
|
|
Info.GpeDevice = NULL;
|
|
Info.NextBlockBaseIndex = 0;
|
|
|
|
Status = AcpiEvWalkGpeList (AcpiEvGetGpeDevice, &Info);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
*GpeDevice = ACPI_CAST_PTR (ACPI_HANDLE, Info.GpeDevice);
|
|
return_ACPI_STATUS (Info.Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetGpeDevice)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGetGpeDevice
|
|
*
|
|
* PARAMETERS: GPE_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Matches the input GPE index (0-CurrentGpeCount) with a GPE
|
|
* block device. NULL if the GPE is one of the FADT-defined GPEs.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvGetGpeDevice (
|
|
ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock,
|
|
void *Context)
|
|
{
|
|
ACPI_GPE_DEVICE_INFO *Info = Context;
|
|
|
|
|
|
/* Increment Index by the number of GPEs in this block */
|
|
|
|
Info->NextBlockBaseIndex += GpeBlock->GpeCount;
|
|
|
|
if (Info->Index < Info->NextBlockBaseIndex)
|
|
{
|
|
/*
|
|
* The GPE index is within this block, get the node. Leave the node
|
|
* NULL for the FADT-defined GPEs
|
|
*/
|
|
if ((GpeBlock->Node)->Type == ACPI_TYPE_DEVICE)
|
|
{
|
|
Info->GpeDevice = GpeBlock->Node;
|
|
}
|
|
|
|
Info->Status = AE_OK;
|
|
return (AE_CTRL_END);
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDisableAllGpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable and clear all GPEs in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDisableAllGpes (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiDisableAllGpes);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiHwDisableAllGpes ();
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEnableAllRuntimeGpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEnableAllRuntimeGpes (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiEnableAllRuntimeGpes);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiHwEnableAllRuntimeGpes ();
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(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
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return_ACPI_STATUS (Status);
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}
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