forked from KolibriOS/kolibrios
497 lines
16 KiB
C
497 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: evgpeutil - GPE utilities
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "acpi.h"
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#include "accommon.h"
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#include "acevents.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evgpeutil")
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvWalkGpeList
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*
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* PARAMETERS: GpeWalkCallback - Routine called for each GPE block
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* Context - Value passed to callback
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk the GPE lists.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvWalkGpeList (
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ACPI_GPE_CALLBACK GpeWalkCallback,
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void *Context)
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{
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ACPI_GPE_BLOCK_INFO *GpeBlock;
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ACPI_GPE_XRUPT_INFO *GpeXruptInfo;
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ACPI_STATUS Status = AE_OK;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (EvWalkGpeList);
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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/* Walk the interrupt level descriptor list */
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GpeXruptInfo = AcpiGbl_GpeXruptListHead;
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while (GpeXruptInfo)
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{
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/* Walk all Gpe Blocks attached to this interrupt level */
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GpeBlock = GpeXruptInfo->GpeBlockListHead;
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while (GpeBlock)
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{
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/* One callback per GPE block */
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Status = GpeWalkCallback (GpeXruptInfo, GpeBlock, Context);
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if (ACPI_FAILURE (Status))
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{
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if (Status == AE_CTRL_END) /* Callback abort */
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{
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Status = AE_OK;
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}
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goto UnlockAndExit;
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}
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GpeBlock = GpeBlock->Next;
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}
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GpeXruptInfo = GpeXruptInfo->Next;
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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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*
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* FUNCTION: AcpiEvValidGpeEvent
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*
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* PARAMETERS: GpeEventInfo - Info for this GPE
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*
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* RETURN: TRUE if the GpeEvent is valid
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*
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* DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
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* Should be called only when the GPE lists are semaphore locked
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* and not subject to change.
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*
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******************************************************************************/
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BOOLEAN
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AcpiEvValidGpeEvent (
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ACPI_GPE_EVENT_INFO *GpeEventInfo)
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{
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ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
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ACPI_GPE_BLOCK_INFO *GpeBlock;
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ACPI_FUNCTION_ENTRY ();
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/* No need for spin lock since we are not changing any list elements */
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/* Walk the GPE interrupt levels */
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GpeXruptBlock = AcpiGbl_GpeXruptListHead;
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while (GpeXruptBlock)
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{
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GpeBlock = GpeXruptBlock->GpeBlockListHead;
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/* Walk the GPE blocks on this interrupt level */
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while (GpeBlock)
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{
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if ((&GpeBlock->EventInfo[0] <= GpeEventInfo) &&
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(&GpeBlock->EventInfo[GpeBlock->GpeCount] > GpeEventInfo))
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{
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return (TRUE);
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}
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GpeBlock = GpeBlock->Next;
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}
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GpeXruptBlock = GpeXruptBlock->Next;
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}
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvGetGpeDevice
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*
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* PARAMETERS: GPE_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Matches the input GPE index (0-CurrentGpeCount) with a GPE
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* block device. NULL if the GPE is one of the FADT-defined GPEs.
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*
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******************************************************************************/
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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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ACPI_GPE_DEVICE_INFO *Info = Context;
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/* Increment Index by the number of GPEs in this block */
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Info->NextBlockBaseIndex += GpeBlock->GpeCount;
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if (Info->Index < Info->NextBlockBaseIndex)
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{
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/*
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* The GPE index is within this block, get the node. Leave the node
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* NULL for the FADT-defined GPEs
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*/
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if ((GpeBlock->Node)->Type == ACPI_TYPE_DEVICE)
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{
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Info->GpeDevice = GpeBlock->Node;
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}
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Info->Status = AE_OK;
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return (AE_CTRL_END);
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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: AcpiEvGetGpeXruptBlock
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*
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* PARAMETERS: InterruptNumber - Interrupt for a GPE block
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*
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* RETURN: A GPE interrupt block
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*
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* DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
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* block per unique interrupt level used for GPEs. Should be
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* called only when the GPE lists are semaphore locked and not
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* subject to change.
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*
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******************************************************************************/
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ACPI_GPE_XRUPT_INFO *
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AcpiEvGetGpeXruptBlock (
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UINT32 InterruptNumber)
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{
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ACPI_GPE_XRUPT_INFO *NextGpeXrupt;
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ACPI_GPE_XRUPT_INFO *GpeXrupt;
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ACPI_STATUS Status;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (EvGetGpeXruptBlock);
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/* No need for lock since we are not changing any list elements here */
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NextGpeXrupt = AcpiGbl_GpeXruptListHead;
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while (NextGpeXrupt)
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{
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if (NextGpeXrupt->InterruptNumber == InterruptNumber)
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{
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return_PTR (NextGpeXrupt);
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}
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NextGpeXrupt = NextGpeXrupt->Next;
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}
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/* Not found, must allocate a new xrupt descriptor */
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GpeXrupt = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_XRUPT_INFO));
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if (!GpeXrupt)
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{
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return_PTR (NULL);
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}
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GpeXrupt->InterruptNumber = InterruptNumber;
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/* Install new interrupt descriptor with spin lock */
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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if (AcpiGbl_GpeXruptListHead)
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{
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NextGpeXrupt = AcpiGbl_GpeXruptListHead;
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while (NextGpeXrupt->Next)
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{
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NextGpeXrupt = NextGpeXrupt->Next;
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}
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NextGpeXrupt->Next = GpeXrupt;
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GpeXrupt->Previous = NextGpeXrupt;
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}
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else
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{
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AcpiGbl_GpeXruptListHead = GpeXrupt;
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}
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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/* Install new interrupt handler if not SCI_INT */
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if (InterruptNumber != AcpiGbl_FADT.SciInterrupt)
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{
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Status = AcpiOsInstallInterruptHandler (InterruptNumber,
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AcpiEvGpeXruptHandler, GpeXrupt);
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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 install GPE interrupt handler at level 0x%X",
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InterruptNumber));
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return_PTR (NULL);
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}
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}
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return_PTR (GpeXrupt);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvDeleteGpeXrupt
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*
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* PARAMETERS: GpeXrupt - A GPE interrupt info block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Remove and free a GpeXrupt block. Remove an associated
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* interrupt handler if not the SCI interrupt.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvDeleteGpeXrupt (
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ACPI_GPE_XRUPT_INFO *GpeXrupt)
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{
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ACPI_STATUS Status;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (EvDeleteGpeXrupt);
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/* We never want to remove the SCI interrupt handler */
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if (GpeXrupt->InterruptNumber == AcpiGbl_FADT.SciInterrupt)
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{
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GpeXrupt->GpeBlockListHead = NULL;
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return_ACPI_STATUS (AE_OK);
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}
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/* Disable this interrupt */
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Status = AcpiOsRemoveInterruptHandler (
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GpeXrupt->InterruptNumber, AcpiEvGpeXruptHandler);
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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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/* Unlink the interrupt block with lock */
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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if (GpeXrupt->Previous)
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{
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GpeXrupt->Previous->Next = GpeXrupt->Next;
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}
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else
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{
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/* No previous, update list head */
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AcpiGbl_GpeXruptListHead = GpeXrupt->Next;
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}
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if (GpeXrupt->Next)
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{
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GpeXrupt->Next->Previous = GpeXrupt->Previous;
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}
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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/* Free the block */
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ACPI_FREE (GpeXrupt);
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvDeleteGpeHandlers
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*
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* PARAMETERS: GpeXruptInfo - GPE Interrupt info
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* GpeBlock - Gpe Block info
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*
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* RETURN: Status
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*
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* DESCRIPTION: Delete all Handler objects found in the GPE data structs.
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* Used only prior to termination.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvDeleteGpeHandlers (
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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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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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UINT32 i;
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UINT32 j;
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ACPI_FUNCTION_TRACE (EvDeleteGpeHandlers);
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/* Examine each GPE Register within the block */
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for (i = 0; i < GpeBlock->RegisterCount; i++)
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{
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/* Now look at the individual GPEs in this byte register */
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for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
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{
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GpeEventInfo = &GpeBlock->EventInfo[((ACPI_SIZE) i *
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ACPI_GPE_REGISTER_WIDTH) + j];
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if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_HANDLER)
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{
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ACPI_FREE (GpeEventInfo->Dispatch.Handler);
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GpeEventInfo->Dispatch.Handler = NULL;
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GpeEventInfo->Flags &= ~ACPI_GPE_DISPATCH_MASK;
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}
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}
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}
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return_ACPI_STATUS (AE_OK);
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}
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