1075 lines
35 KiB
C
1075 lines
35 KiB
C
/******************************************************************************
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*
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* Module Name: evevent - Fixed and General Purpose Even handling and dispatch
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* $Revision: 90 $
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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 - 2002, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "acpi.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evevent")
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvInitialize
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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: Initialize global data structures for events.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvInitialize (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("EvInitialize");
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/* Make sure we have ACPI tables */
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if (!AcpiGbl_DSDT)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No ACPI tables present!\n"));
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/*
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* Initialize the Fixed and General Purpose AcpiEvents prior. This is
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* done prior to enabling SCIs to prevent interrupts from occuring
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* before handers are installed.
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*/
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Status = AcpiEvFixedEventInitialize ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_FATAL,
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"Unable to initialize fixed events, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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Status = AcpiEvGpeInitialize ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_FATAL,
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"Unable to initialize general purpose events, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (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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* FUNCTION: AcpiEvHandlerInitialize
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install handlers for the SCI, Global Lock, and GPEs.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvHandlerInitialize (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("EvHandlerInitialize");
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/* Install the SCI handler */
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Status = AcpiEvInstallSciHandler ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_FATAL,
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"Unable to install System Control Interrupt Handler, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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/* Install handlers for control method GPE handlers (_Lxx, _Exx) */
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Status = AcpiEvInitGpeControlMethods ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_FATAL,
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"Unable to initialize GPE control methods, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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/* Install the handler for the Global Lock */
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Status = AcpiEvInitGlobalLockHandler ();
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_FATAL,
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"Unable to initialize Global Lock handler, %s\n",
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AcpiFormatException (Status)));
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return_ACPI_STATUS (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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* FUNCTION: AcpiEvFixedEventInitialize
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install the fixed event handlers and enable the fixed events.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvFixedEventInitialize (
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void)
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{
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NATIVE_UINT i;
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ACPI_STATUS Status;
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/*
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* Initialize the structure that keeps track of fixed event handlers
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* and enable the fixed events.
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*/
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for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
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{
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AcpiGbl_FixedEventHandlers[i].Handler = NULL;
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AcpiGbl_FixedEventHandlers[i].Context = NULL;
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/* Enable the fixed event */
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if (AcpiGbl_FixedEventInfo[i].EnableRegisterId != 0xFF)
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{
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Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[i].EnableRegisterId,
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0, ACPI_MTX_LOCK);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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}
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvFixedEventDetect
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*
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* PARAMETERS: None
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*
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* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
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*
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* DESCRIPTION: Checks the PM status register for fixed events
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*
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******************************************************************************/
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UINT32
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AcpiEvFixedEventDetect (
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void)
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{
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UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
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UINT32 GpeStatus;
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UINT32 GpeEnable;
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NATIVE_UINT_MAX32 i;
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ACPI_FUNCTION_NAME ("EvFixedEventDetect");
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/*
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* Read the fixed feature status and enable registers, as all the cases
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* depend on their values. Ignore errors here.
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*/
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(void) AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS, &GpeStatus);
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(void) AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_ENABLE, &GpeEnable);
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ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
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"Fixed AcpiEvent Block: Enable %08X Status %08X\n",
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GpeEnable, GpeStatus));
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/*
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* Check for all possible Fixed Events and dispatch those that are active
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*/
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for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
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{
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/* Both the status and enable bits must be on for this event */
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if ((GpeStatus & AcpiGbl_FixedEventInfo[i].StatusBitMask) &&
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(GpeEnable & AcpiGbl_FixedEventInfo[i].EnableBitMask))
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{
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/* Found an active (signalled) event */
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IntStatus |= AcpiEvFixedEventDispatch (i);
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}
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}
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return (IntStatus);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvFixedEventDispatch
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*
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* PARAMETERS: Event - Event type
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*
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* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
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*
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* DESCRIPTION: Clears the status bit for the requested event, calls the
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* handler that previously registered for the event.
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*
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******************************************************************************/
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UINT32
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AcpiEvFixedEventDispatch (
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UINT32 Event)
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{
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|
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ACPI_FUNCTION_ENTRY ();
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|
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/* Clear the status bit */
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(void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
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1, ACPI_MTX_DO_NOT_LOCK);
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|
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/*
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* Make sure we've got a handler. If not, report an error.
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* The event is disabled to prevent further interrupts.
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*/
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if (NULL == AcpiGbl_FixedEventHandlers[Event].Handler)
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{
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(void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
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0, ACPI_MTX_DO_NOT_LOCK);
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ACPI_REPORT_ERROR (
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("EvGpeDispatch: No installed handler for fixed event [%08X]\n",
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Event));
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return (ACPI_INTERRUPT_NOT_HANDLED);
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}
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/* Invoke the Fixed Event handler */
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return ((AcpiGbl_FixedEventHandlers[Event].Handler)(
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AcpiGbl_FixedEventHandlers[Event].Context));
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}
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|
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvGpeInitialize
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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: Initialize the GPE data structures
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*
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******************************************************************************/
|
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ACPI_STATUS
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AcpiEvGpeInitialize (void)
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{
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NATIVE_UINT_MAX32 i;
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NATIVE_UINT_MAX32 j;
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UINT32 GpeBlock;
|
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UINT32 GpeRegister;
|
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UINT32 GpeNumberIndex;
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UINT32 GpeNumber;
|
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
|
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ACPI_STATUS Status;
|
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|
|
|
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ACPI_FUNCTION_TRACE ("EvGpeInitialize");
|
|
|
|
|
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/*
|
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* Initialize the GPE Block globals
|
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*
|
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* Why the GPE register block lengths divided by 2: From the ACPI Spec,
|
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* section "General-Purpose Event Registers", we have:
|
|
*
|
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* "Each register block contains two registers of equal length
|
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* GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
|
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* GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
|
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* The length of the GPE1_STS and GPE1_EN registers is equal to
|
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* half the GPE1_LEN. If a generic register block is not supported
|
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* then its respective block pointer and block length values in the
|
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* FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
|
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* to be the same size."
|
|
*/
|
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AcpiGbl_GpeBlockInfo[0].AddressSpaceId = AcpiGbl_FADT->XGpe0Blk.AddressSpaceId;
|
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AcpiGbl_GpeBlockInfo[1].AddressSpaceId = AcpiGbl_FADT->XGpe1Blk.AddressSpaceId;
|
|
|
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AcpiGbl_GpeBlockInfo[0].RegisterCount = (UINT16) ACPI_DIV_16 (AcpiGbl_FADT->XGpe0Blk.RegisterBitWidth);
|
|
AcpiGbl_GpeBlockInfo[1].RegisterCount = (UINT16) ACPI_DIV_16 (AcpiGbl_FADT->XGpe1Blk.RegisterBitWidth);
|
|
|
|
AcpiGbl_GpeBlockInfo[0].BlockAddress = &AcpiGbl_FADT->XGpe0Blk;
|
|
AcpiGbl_GpeBlockInfo[1].BlockAddress = &AcpiGbl_FADT->XGpe1Blk;
|
|
|
|
AcpiGbl_GpeBlockInfo[0].BlockBaseNumber = 0;
|
|
AcpiGbl_GpeBlockInfo[1].BlockBaseNumber = AcpiGbl_FADT->Gpe1Base;
|
|
|
|
AcpiGbl_GpeRegisterCount = AcpiGbl_GpeBlockInfo[0].RegisterCount +
|
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AcpiGbl_GpeBlockInfo[1].RegisterCount;
|
|
if (!AcpiGbl_GpeRegisterCount)
|
|
{
|
|
ACPI_REPORT_WARNING (("Zero GPEs are defined in the FADT\n"));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Determine the maximum GPE number for this machine */
|
|
|
|
AcpiGbl_GpeNumberMax = ACPI_MUL_8 (AcpiGbl_GpeBlockInfo[0].RegisterCount) - 1;
|
|
|
|
if (AcpiGbl_GpeBlockInfo[1].RegisterCount)
|
|
{
|
|
/* Check for GPE0/GPE1 overlap */
|
|
|
|
if (AcpiGbl_GpeNumberMax >= AcpiGbl_FADT->Gpe1Base)
|
|
{
|
|
ACPI_REPORT_ERROR (("GPE0 block overlaps the GPE1 block\n"));
|
|
return_ACPI_STATUS (AE_BAD_VALUE);
|
|
}
|
|
|
|
/* GPE0 and GPE1 do not have to be contiguous in the GPE number space */
|
|
|
|
AcpiGbl_GpeNumberMax = AcpiGbl_FADT->Gpe1Base + (ACPI_MUL_8 (AcpiGbl_GpeBlockInfo[1].RegisterCount) - 1);
|
|
}
|
|
|
|
/* Check for Max GPE number out-of-range */
|
|
|
|
if (AcpiGbl_GpeNumberMax > ACPI_GPE_MAX)
|
|
{
|
|
ACPI_REPORT_ERROR (("Maximum GPE number from FADT is too large: 0x%X\n", AcpiGbl_GpeNumberMax));
|
|
return_ACPI_STATUS (AE_BAD_VALUE);
|
|
}
|
|
|
|
/*
|
|
* Allocate the GPE number-to-index translation table
|
|
*/
|
|
AcpiGbl_GpeNumberToIndex = ACPI_MEM_CALLOCATE (
|
|
sizeof (ACPI_GPE_INDEX_INFO) *
|
|
((ACPI_SIZE) AcpiGbl_GpeNumberMax + 1));
|
|
if (!AcpiGbl_GpeNumberToIndex)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Could not allocate the GpeNumberToIndex table\n"));
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Set the Gpe index table to GPE_INVALID */
|
|
|
|
ACPI_MEMSET (AcpiGbl_GpeNumberToIndex, (int) ACPI_GPE_INVALID,
|
|
sizeof (ACPI_GPE_INDEX_INFO) * ((ACPI_SIZE) AcpiGbl_GpeNumberMax + 1));
|
|
|
|
/*
|
|
* Allocate the GPE register information block
|
|
*/
|
|
AcpiGbl_GpeRegisterInfo = ACPI_MEM_CALLOCATE (
|
|
(ACPI_SIZE) AcpiGbl_GpeRegisterCount *
|
|
sizeof (ACPI_GPE_REGISTER_INFO));
|
|
if (!AcpiGbl_GpeRegisterInfo)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Could not allocate the GpeRegisterInfo table\n"));
|
|
goto ErrorExit1;
|
|
}
|
|
|
|
/*
|
|
* Allocate the GPE dispatch handler block. There are eight distinct GPEs
|
|
* per register. Initialization to zeros is sufficient.
|
|
*/
|
|
AcpiGbl_GpeNumberInfo = ACPI_MEM_CALLOCATE (
|
|
(ACPI_SIZE) ACPI_MUL_8 (AcpiGbl_GpeRegisterCount) *
|
|
sizeof (ACPI_GPE_NUMBER_INFO));
|
|
if (!AcpiGbl_GpeNumberInfo)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not allocate the GpeNumberInfo table\n"));
|
|
goto ErrorExit2;
|
|
}
|
|
|
|
/*
|
|
* Initialize the GPE information and validation tables. A goal of these
|
|
* tables is to hide the fact that there are two separate GPE register sets
|
|
* in a given gpe hardware block, the status registers occupy the first half,
|
|
* and the enable registers occupy the second half. Another goal is to hide
|
|
* the fact that there may be multiple GPE hardware blocks.
|
|
*/
|
|
GpeRegister = 0;
|
|
GpeNumberIndex = 0;
|
|
|
|
for (GpeBlock = 0; GpeBlock < ACPI_MAX_GPE_BLOCKS; GpeBlock++)
|
|
{
|
|
for (i = 0; i < AcpiGbl_GpeBlockInfo[GpeBlock].RegisterCount; i++)
|
|
{
|
|
GpeRegisterInfo = &AcpiGbl_GpeRegisterInfo[GpeRegister];
|
|
|
|
/* Init the Register info for this entire GPE register (8 GPEs) */
|
|
|
|
GpeRegisterInfo->BaseGpeNumber = (UINT8) (AcpiGbl_GpeBlockInfo[GpeBlock].BlockBaseNumber
|
|
+ (ACPI_MUL_8 (i)));
|
|
|
|
ACPI_STORE_ADDRESS (GpeRegisterInfo->StatusAddress.Address,
|
|
(ACPI_GET_ADDRESS (AcpiGbl_GpeBlockInfo[GpeBlock].BlockAddress->Address)
|
|
+ i));
|
|
|
|
ACPI_STORE_ADDRESS (GpeRegisterInfo->EnableAddress.Address,
|
|
(ACPI_GET_ADDRESS (AcpiGbl_GpeBlockInfo[GpeBlock].BlockAddress->Address)
|
|
+ i
|
|
+ AcpiGbl_GpeBlockInfo[GpeBlock].RegisterCount));
|
|
|
|
GpeRegisterInfo->StatusAddress.AddressSpaceId = AcpiGbl_GpeBlockInfo[GpeBlock].AddressSpaceId;
|
|
GpeRegisterInfo->EnableAddress.AddressSpaceId = AcpiGbl_GpeBlockInfo[GpeBlock].AddressSpaceId;
|
|
GpeRegisterInfo->StatusAddress.RegisterBitWidth = 8;
|
|
GpeRegisterInfo->EnableAddress.RegisterBitWidth = 8;
|
|
GpeRegisterInfo->StatusAddress.RegisterBitOffset = 8;
|
|
GpeRegisterInfo->EnableAddress.RegisterBitOffset = 8;
|
|
|
|
/* Init the Index mapping info for each GPE number within this register */
|
|
|
|
for (j = 0; j < 8; j++)
|
|
{
|
|
GpeNumber = GpeRegisterInfo->BaseGpeNumber + j;
|
|
AcpiGbl_GpeNumberToIndex[GpeNumber].NumberIndex = (UINT8) GpeNumberIndex;
|
|
|
|
AcpiGbl_GpeNumberInfo[GpeNumberIndex].BitMask = AcpiGbl_DecodeTo8bit[j];
|
|
GpeNumberIndex++;
|
|
}
|
|
|
|
/*
|
|
* Clear the status/enable registers. Note that status registers
|
|
* are cleared by writing a '1', while enable registers are cleared
|
|
* by writing a '0'.
|
|
*/
|
|
|
|
Status = AcpiHwLowLevelWrite (8, 0x00, &GpeRegisterInfo->EnableAddress, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiHwLowLevelWrite (8, 0xFF, &GpeRegisterInfo->StatusAddress, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
GpeRegister++;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "GPE Block%d: %X registers at %8.8X%8.8X\n",
|
|
(INT32) GpeBlock, AcpiGbl_GpeBlockInfo[0].RegisterCount,
|
|
ACPI_HIDWORD (ACPI_GET_ADDRESS (AcpiGbl_GpeBlockInfo[GpeBlock].BlockAddress->Address)),
|
|
ACPI_LODWORD (ACPI_GET_ADDRESS (AcpiGbl_GpeBlockInfo[GpeBlock].BlockAddress->Address))));
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "GPE Block%d Range GPE #%2.2X to GPE #%2.2X\n",
|
|
(INT32) GpeBlock,
|
|
AcpiGbl_GpeBlockInfo[GpeBlock].BlockBaseNumber,
|
|
AcpiGbl_GpeBlockInfo[GpeBlock].BlockBaseNumber +
|
|
((AcpiGbl_GpeBlockInfo[GpeBlock].RegisterCount * 8) -1)));
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
|
|
/* Error cleanup */
|
|
|
|
ErrorExit2:
|
|
ACPI_MEM_FREE (AcpiGbl_GpeRegisterInfo);
|
|
|
|
ErrorExit1:
|
|
ACPI_MEM_FREE (AcpiGbl_GpeNumberToIndex);
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvSaveMethodInfo
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a
|
|
* control method under the _GPE portion of the namespace.
|
|
* Extract the name and GPE type from the object, saving this
|
|
* information for quick lookup during GPE dispatch
|
|
*
|
|
* The name of each GPE control method is of the form:
|
|
* "_Lnn" or "_Enn"
|
|
* Where:
|
|
* L - means that the GPE is level triggered
|
|
* E - means that the GPE is edge triggered
|
|
* nn - is the GPE number [in HEX]
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvSaveMethodInfo (
|
|
ACPI_HANDLE ObjHandle,
|
|
UINT32 Level,
|
|
void *ObjDesc,
|
|
void **ReturnValue)
|
|
{
|
|
UINT32 GpeNumber;
|
|
UINT32 GpeNumberIndex;
|
|
NATIVE_CHAR Name[ACPI_NAME_SIZE + 1];
|
|
UINT8 Type;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("EvSaveMethodInfo");
|
|
|
|
|
|
/* Extract the name from the object and convert to a string */
|
|
|
|
ACPI_MOVE_UNALIGNED32_TO_32 (Name,
|
|
&((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Integer);
|
|
Name[ACPI_NAME_SIZE] = 0;
|
|
|
|
/*
|
|
* Edge/Level determination is based on the 2nd character of the method name
|
|
*/
|
|
switch (Name[1])
|
|
{
|
|
case 'L':
|
|
Type = ACPI_EVENT_LEVEL_TRIGGERED;
|
|
break;
|
|
|
|
case 'E':
|
|
Type = ACPI_EVENT_EDGE_TRIGGERED;
|
|
break;
|
|
|
|
default:
|
|
/* Unknown method type, just ignore it! */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Unknown GPE method type: %s (name not of form _Lnn or _Enn)\n",
|
|
Name));
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Convert the last two characters of the name to the GPE Number */
|
|
|
|
GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
|
|
if (GpeNumber == ACPI_UINT32_MAX)
|
|
{
|
|
/* Conversion failed; invalid method, just ignore it */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Could not extract GPE number from name: %s (name not of form _Lnn or _Enn)\n",
|
|
Name));
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Get GPE index and ensure that we have a valid GPE number */
|
|
|
|
GpeNumberIndex = AcpiEvGetGpeNumberIndex (GpeNumber);
|
|
if (GpeNumberIndex == ACPI_GPE_INVALID)
|
|
{
|
|
/* Not valid, all we can do here is ignore it */
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Now we can add this information to the GpeInfo block
|
|
* for use during dispatch of this GPE.
|
|
*/
|
|
AcpiGbl_GpeNumberInfo [GpeNumberIndex].Type = Type;
|
|
AcpiGbl_GpeNumberInfo [GpeNumberIndex].MethodHandle = ObjHandle;
|
|
|
|
/*
|
|
* Enable the GPE (SCIs should be disabled at this point)
|
|
*/
|
|
Status = AcpiHwEnableGpe (GpeNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Registered GPE method %s as GPE number %X\n",
|
|
Name, GpeNumber));
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInitGpeControlMethods
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Obtain the control methods associated with the GPEs.
|
|
* NOTE: Must be called AFTER namespace initialization!
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvInitGpeControlMethods (void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvInitGpeControlMethods");
|
|
|
|
|
|
/* Get a permanent handle to the _GPE object */
|
|
|
|
Status = AcpiGetHandle (NULL, "\\_GPE", &AcpiGbl_GpeObjHandle);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Traverse the namespace under \_GPE to find all methods there */
|
|
|
|
Status = AcpiWalkNamespace (ACPI_TYPE_METHOD, AcpiGbl_GpeObjHandle,
|
|
ACPI_UINT32_MAX, AcpiEvSaveMethodInfo,
|
|
NULL, NULL);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGpeDetect
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
|
|
*
|
|
* DESCRIPTION: Detect if any GP events have occurred. This function is
|
|
* executed at interrupt level.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvGpeDetect (void)
|
|
{
|
|
UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
|
|
UINT32 i;
|
|
UINT32 j;
|
|
UINT8 EnabledStatusByte;
|
|
UINT8 BitMask;
|
|
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
|
|
UINT32 InValue;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("EvGpeDetect");
|
|
|
|
|
|
/*
|
|
* Read all of the 8-bit GPE status and enable registers
|
|
* in both of the register blocks, saving all of it.
|
|
* Find all currently active GP events.
|
|
*/
|
|
for (i = 0; i < AcpiGbl_GpeRegisterCount; i++)
|
|
{
|
|
GpeRegisterInfo = &AcpiGbl_GpeRegisterInfo[i];
|
|
|
|
Status = AcpiHwLowLevelRead (8, &InValue, &GpeRegisterInfo->StatusAddress, 0);
|
|
GpeRegisterInfo->Status = (UINT8) InValue;
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
|
|
Status = AcpiHwLowLevelRead (8, &InValue, &GpeRegisterInfo->EnableAddress, 0);
|
|
GpeRegisterInfo->Enable = (UINT8) InValue;
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
|
|
"GPE block at %8.8X%8.8X - Values: Enable %02X Status %02X\n",
|
|
ACPI_HIDWORD (ACPI_GET_ADDRESS (GpeRegisterInfo->EnableAddress.Address)),
|
|
ACPI_LODWORD (ACPI_GET_ADDRESS (GpeRegisterInfo->EnableAddress.Address)),
|
|
GpeRegisterInfo->Enable,
|
|
GpeRegisterInfo->Status));
|
|
|
|
/* First check if there is anything active at all in this register */
|
|
|
|
EnabledStatusByte = (UINT8) (GpeRegisterInfo->Status &
|
|
GpeRegisterInfo->Enable);
|
|
if (!EnabledStatusByte)
|
|
{
|
|
/* No active GPEs in this register, move on */
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Now look at the individual GPEs in this byte register */
|
|
|
|
for (j = 0, BitMask = 1; j < 8; j++, BitMask <<= 1)
|
|
{
|
|
/* Examine one GPE bit */
|
|
|
|
if (EnabledStatusByte & BitMask)
|
|
{
|
|
/*
|
|
* Found an active GPE. Dispatch the event to a handler
|
|
* or method.
|
|
*/
|
|
IntStatus |= AcpiEvGpeDispatch (
|
|
GpeRegisterInfo->BaseGpeNumber + j);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (IntStatus);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvAsynchExecuteGpeMethod
|
|
*
|
|
* PARAMETERS: GpeNumber - The 0-based GPE number
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Perform the actual execution of a GPE control method. This
|
|
* function is called from an invocation of AcpiOsQueueForExecution
|
|
* (and therefore does NOT execute at interrupt level) so that
|
|
* the control method itself is not executed in the context of
|
|
* the SCI interrupt handler.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void ACPI_SYSTEM_XFACE
|
|
AcpiEvAsynchExecuteGpeMethod (
|
|
void *Context)
|
|
{
|
|
UINT32 GpeNumber = (UINT32) ACPI_TO_INTEGER (Context);
|
|
UINT32 GpeNumberIndex;
|
|
ACPI_GPE_NUMBER_INFO GpeInfo;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvAsynchExecuteGpeMethod");
|
|
|
|
|
|
GpeNumberIndex = AcpiEvGetGpeNumberIndex (GpeNumber);
|
|
if (GpeNumberIndex == ACPI_GPE_INVALID)
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Take a snapshot of the GPE info for this level - we copy the
|
|
* info to prevent a race condition with RemoveHandler.
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
GpeInfo = AcpiGbl_GpeNumberInfo [GpeNumberIndex];
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
if (GpeInfo.MethodHandle)
|
|
{
|
|
/*
|
|
* Invoke the GPE Method (_Lxx, _Exx):
|
|
* (Evaluate the _Lxx/_Exx control method that corresponds to this GPE.)
|
|
*/
|
|
Status = AcpiNsEvaluateByHandle (GpeInfo.MethodHandle, NULL, NULL);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("%s while evaluated GPE%X method\n",
|
|
AcpiFormatException (Status), GpeNumber));
|
|
}
|
|
}
|
|
|
|
if (GpeInfo.Type & ACPI_EVENT_LEVEL_TRIGGERED)
|
|
{
|
|
/*
|
|
* GPE is level-triggered, we clear the GPE status bit after handling
|
|
* the event.
|
|
*/
|
|
Status = AcpiHwClearGpe (GpeNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Enable the GPE.
|
|
*/
|
|
(void) AcpiHwEnableGpe (GpeNumber);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGpeDispatch
|
|
*
|
|
* PARAMETERS: GpeNumber - The 0-based GPE number
|
|
*
|
|
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
|
|
*
|
|
* DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC)
|
|
* or method (e.g. _Lxx/_Exx) handler. This function executes
|
|
* at interrupt level.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvGpeDispatch (
|
|
UINT32 GpeNumber)
|
|
{
|
|
UINT32 GpeNumberIndex;
|
|
ACPI_GPE_NUMBER_INFO *GpeInfo;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvGpeDispatch");
|
|
|
|
|
|
GpeNumberIndex = AcpiEvGetGpeNumberIndex (GpeNumber);
|
|
if (GpeNumberIndex == ACPI_GPE_INVALID)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid event, GPE[%X].\n", GpeNumber));
|
|
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
|
|
/*
|
|
* We don't have to worry about mutex on GpeInfo because we are
|
|
* executing at interrupt level.
|
|
*/
|
|
GpeInfo = &AcpiGbl_GpeNumberInfo [GpeNumberIndex];
|
|
|
|
/*
|
|
* If edge-triggered, clear the GPE status bit now. Note that
|
|
* level-triggered events are cleared after the GPE is serviced.
|
|
*/
|
|
if (GpeInfo->Type & ACPI_EVENT_EDGE_TRIGGERED)
|
|
{
|
|
Status = AcpiHwClearGpe (GpeNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to clear GPE[%X]\n", GpeNumber));
|
|
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dispatch the GPE to either an installed handler, or the control
|
|
* method associated with this GPE (_Lxx or _Exx).
|
|
* If a handler exists, we invoke it and do not attempt to run the method.
|
|
* If there is neither a handler nor a method, we disable the level to
|
|
* prevent further events from coming in here.
|
|
*/
|
|
if (GpeInfo->Handler)
|
|
{
|
|
/* Invoke the installed handler (at interrupt level) */
|
|
|
|
GpeInfo->Handler (GpeInfo->Context);
|
|
}
|
|
else if (GpeInfo->MethodHandle)
|
|
{
|
|
/*
|
|
* Disable GPE, so it doesn't keep firing before the method has a
|
|
* chance to run.
|
|
*/
|
|
Status = AcpiHwDisableGpe (GpeNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to disable GPE[%X]\n", GpeNumber));
|
|
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
|
|
/*
|
|
* Execute the method associated with the GPE.
|
|
*/
|
|
if (ACPI_FAILURE (AcpiOsQueueForExecution (OSD_PRIORITY_GPE,
|
|
AcpiEvAsynchExecuteGpeMethod,
|
|
ACPI_TO_POINTER (GpeNumber))))
|
|
{
|
|
ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to queue handler for GPE[%X], event is disabled\n", GpeNumber));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* No handler or method to run! */
|
|
|
|
ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: No handler or method for GPE[%X], disabling event\n", GpeNumber));
|
|
|
|
/*
|
|
* Disable the GPE. The GPE will remain disabled until the ACPI
|
|
* Core Subsystem is restarted, or the handler is reinstalled.
|
|
*/
|
|
Status = AcpiHwDisableGpe (GpeNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to disable GPE[%X]\n", GpeNumber));
|
|
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* It is now safe to clear level-triggered evnets.
|
|
*/
|
|
if (GpeInfo->Type & ACPI_EVENT_LEVEL_TRIGGERED)
|
|
{
|
|
Status = AcpiHwClearGpe (GpeNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("AcpiEvGpeDispatch: Unable to clear GPE[%X]\n", GpeNumber));
|
|
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
|
|
return_VALUE (ACPI_INTERRUPT_HANDLED);
|
|
}
|