661 lines
21 KiB
C
661 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: evgpeblk - GPE block creation and initialization.
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "acpi.h"
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evgpeblk")
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/* Local prototypes */
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static ACPI_STATUS
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AcpiEvInstallGpeBlock (
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ACPI_GPE_BLOCK_INFO *GpeBlock,
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UINT32 InterruptNumber);
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static ACPI_STATUS
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AcpiEvCreateGpeInfoBlocks (
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ACPI_GPE_BLOCK_INFO *GpeBlock);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvInstallGpeBlock
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*
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* PARAMETERS: GpeBlock - New GPE block
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* InterruptNumber - Xrupt to be associated with this
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* GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install new GPE block with mutex support
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiEvInstallGpeBlock (
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ACPI_GPE_BLOCK_INFO *GpeBlock,
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UINT32 InterruptNumber)
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{
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ACPI_GPE_BLOCK_INFO *NextGpeBlock;
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ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
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ACPI_STATUS Status;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (EvInstallGpeBlock);
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Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
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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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GpeXruptBlock = AcpiEvGetGpeXruptBlock (InterruptNumber);
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if (!GpeXruptBlock)
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{
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Status = AE_NO_MEMORY;
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goto UnlockAndExit;
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}
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/* Install the new block at the end of the list with lock */
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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if (GpeXruptBlock->GpeBlockListHead)
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{
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NextGpeBlock = GpeXruptBlock->GpeBlockListHead;
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while (NextGpeBlock->Next)
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{
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NextGpeBlock = NextGpeBlock->Next;
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}
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NextGpeBlock->Next = GpeBlock;
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GpeBlock->Previous = NextGpeBlock;
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}
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else
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{
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GpeXruptBlock->GpeBlockListHead = GpeBlock;
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}
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GpeBlock->XruptBlock = GpeXruptBlock;
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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UnlockAndExit:
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Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
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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: AcpiEvDeleteGpeBlock
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*
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* PARAMETERS: GpeBlock - Existing GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Remove a GPE block
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvDeleteGpeBlock (
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ACPI_GPE_BLOCK_INFO *GpeBlock)
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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 (EvInstallGpeBlock);
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Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
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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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/* Disable all GPEs in this block */
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Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock, NULL);
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if (!GpeBlock->Previous && !GpeBlock->Next)
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{
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/* This is the last GpeBlock on this interrupt */
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Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock);
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if (ACPI_FAILURE (Status))
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{
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goto UnlockAndExit;
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}
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}
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else
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{
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/* Remove the block on this interrupt with lock */
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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if (GpeBlock->Previous)
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{
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GpeBlock->Previous->Next = GpeBlock->Next;
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}
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else
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{
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GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next;
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}
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if (GpeBlock->Next)
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{
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GpeBlock->Next->Previous = GpeBlock->Previous;
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}
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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}
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AcpiCurrentGpeCount -= GpeBlock->GpeCount;
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/* Free the GpeBlock */
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ACPI_FREE (GpeBlock->RegisterInfo);
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ACPI_FREE (GpeBlock->EventInfo);
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ACPI_FREE (GpeBlock);
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UnlockAndExit:
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Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
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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: AcpiEvCreateGpeInfoBlocks
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*
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* PARAMETERS: GpeBlock - New GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiEvCreateGpeInfoBlocks (
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ACPI_GPE_BLOCK_INFO *GpeBlock)
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{
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL;
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ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL;
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ACPI_GPE_EVENT_INFO *ThisEvent;
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ACPI_GPE_REGISTER_INFO *ThisRegister;
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UINT32 i;
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UINT32 j;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (EvCreateGpeInfoBlocks);
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/* Allocate the GPE register information block */
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GpeRegisterInfo = ACPI_ALLOCATE_ZEROED (
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(ACPI_SIZE) GpeBlock->RegisterCount *
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sizeof (ACPI_GPE_REGISTER_INFO));
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if (!GpeRegisterInfo)
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{
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ACPI_ERROR ((AE_INFO,
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"Could not allocate the GpeRegisterInfo table"));
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/*
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* Allocate the GPE EventInfo block. There are eight distinct GPEs
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* per register. Initialization to zeros is sufficient.
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*/
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GpeEventInfo = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) GpeBlock->GpeCount *
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sizeof (ACPI_GPE_EVENT_INFO));
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if (!GpeEventInfo)
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{
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ACPI_ERROR ((AE_INFO,
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"Could not allocate the GpeEventInfo table"));
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Status = AE_NO_MEMORY;
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goto ErrorExit;
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}
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/* Save the new Info arrays in the GPE block */
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GpeBlock->RegisterInfo = GpeRegisterInfo;
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GpeBlock->EventInfo = GpeEventInfo;
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/*
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* Initialize the GPE Register and Event structures. A goal of these
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* tables is to hide the fact that there are two separate GPE register
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* sets in a given GPE hardware block, the status registers occupy the
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* first half, and the enable registers occupy the second half.
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*/
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ThisRegister = GpeRegisterInfo;
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ThisEvent = GpeEventInfo;
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for (i = 0; i < GpeBlock->RegisterCount; i++)
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{
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/* Init the RegisterInfo for this GPE register (8 GPEs) */
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ThisRegister->BaseGpeNumber = (UINT8) (GpeBlock->BlockBaseNumber +
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(i * ACPI_GPE_REGISTER_WIDTH));
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ThisRegister->StatusAddress.Address =
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GpeBlock->BlockAddress.Address + i;
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ThisRegister->EnableAddress.Address =
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GpeBlock->BlockAddress.Address + i + GpeBlock->RegisterCount;
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ThisRegister->StatusAddress.SpaceId = GpeBlock->BlockAddress.SpaceId;
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ThisRegister->EnableAddress.SpaceId = GpeBlock->BlockAddress.SpaceId;
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ThisRegister->StatusAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH;
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ThisRegister->EnableAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH;
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ThisRegister->StatusAddress.BitOffset = 0;
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ThisRegister->EnableAddress.BitOffset = 0;
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/* Init the EventInfo for each GPE within this register */
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for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
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{
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ThisEvent->GpeNumber = (UINT8) (ThisRegister->BaseGpeNumber + j);
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ThisEvent->RegisterInfo = ThisRegister;
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ThisEvent++;
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}
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/* Disable all GPEs within this register */
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Status = AcpiHwWrite (0x00, &ThisRegister->EnableAddress);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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/* Clear any pending GPE events within this register */
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Status = AcpiHwWrite (0xFF, &ThisRegister->StatusAddress);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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ThisRegister++;
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}
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return_ACPI_STATUS (AE_OK);
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ErrorExit:
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if (GpeRegisterInfo)
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{
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ACPI_FREE (GpeRegisterInfo);
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}
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if (GpeEventInfo)
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{
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ACPI_FREE (GpeEventInfo);
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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: AcpiEvCreateGpeBlock
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*
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* PARAMETERS: GpeDevice - Handle to the parent GPE block
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* GpeBlockAddress - Address and SpaceID
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* RegisterCount - Number of GPE register pairs in the block
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* GpeBlockBaseNumber - Starting GPE number for the block
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* InterruptNumber - H/W interrupt for the block
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* ReturnGpeBlock - Where the new block descriptor is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Create and Install a block of GPE registers. All GPEs within
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* the block are disabled at exit.
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* Note: Assumes namespace is locked.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvCreateGpeBlock (
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ACPI_NAMESPACE_NODE *GpeDevice,
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ACPI_GENERIC_ADDRESS *GpeBlockAddress,
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UINT32 RegisterCount,
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UINT8 GpeBlockBaseNumber,
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UINT32 InterruptNumber,
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ACPI_GPE_BLOCK_INFO **ReturnGpeBlock)
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{
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ACPI_STATUS Status;
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ACPI_GPE_BLOCK_INFO *GpeBlock;
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ACPI_GPE_WALK_INFO WalkInfo;
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ACPI_FUNCTION_TRACE (EvCreateGpeBlock);
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if (!RegisterCount)
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{
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return_ACPI_STATUS (AE_OK);
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}
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/* Allocate a new GPE block */
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GpeBlock = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_BLOCK_INFO));
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if (!GpeBlock)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Initialize the new GPE block */
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GpeBlock->Node = GpeDevice;
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GpeBlock->GpeCount = (UINT16) (RegisterCount * ACPI_GPE_REGISTER_WIDTH);
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GpeBlock->RegisterCount = RegisterCount;
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GpeBlock->BlockBaseNumber = GpeBlockBaseNumber;
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ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress,
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sizeof (ACPI_GENERIC_ADDRESS));
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/*
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* Create the RegisterInfo and EventInfo sub-structures
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* Note: disables and clears all GPEs in the block
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*/
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Status = AcpiEvCreateGpeInfoBlocks (GpeBlock);
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if (ACPI_FAILURE (Status))
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{
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ACPI_FREE (GpeBlock);
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return_ACPI_STATUS (Status);
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}
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/* Install the new block in the global lists */
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Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptNumber);
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if (ACPI_FAILURE (Status))
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{
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ACPI_FREE (GpeBlock);
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return_ACPI_STATUS (Status);
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}
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/* Find all GPE methods (_Lxx or_Exx) for this block */
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WalkInfo.GpeBlock = GpeBlock;
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WalkInfo.GpeDevice = GpeDevice;
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WalkInfo.EnableThisGpe = FALSE;
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WalkInfo.ExecuteByOwnerId = FALSE;
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Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice,
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ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
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AcpiEvMatchGpeMethod, NULL, &WalkInfo, NULL);
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/* Return the new block */
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if (ReturnGpeBlock)
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{
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(*ReturnGpeBlock) = GpeBlock;
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
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"GPE %02X to %02X [%4.4s] %u regs on int 0x%X\n",
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(UINT32) GpeBlock->BlockBaseNumber,
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(UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)),
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GpeDevice->Name.Ascii, GpeBlock->RegisterCount,
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InterruptNumber));
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/* Update global count of currently available GPEs */
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AcpiCurrentGpeCount += GpeBlock->GpeCount;
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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: AcpiEvInitializeGpeBlock
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*
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* PARAMETERS: GpeDevice - Handle to the parent GPE block
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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: Initialize and enable a GPE block. First find and run any
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* _PRT methods associated with the block, then enable the
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* appropriate GPEs.
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* Note: Assumes namespace is locked.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvInitializeGpeBlock (
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ACPI_NAMESPACE_NODE *GpeDevice,
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ACPI_GPE_BLOCK_INFO *GpeBlock)
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{
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ACPI_STATUS Status;
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_GPE_WALK_INFO WalkInfo;
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UINT32 WakeGpeCount;
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UINT32 GpeEnabledCount;
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UINT32 GpeIndex;
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UINT32 GpeNumber;
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UINT32 i;
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UINT32 j;
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ACPI_FUNCTION_TRACE (EvInitializeGpeBlock);
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/* Ignore a null GPE block (e.g., if no GPE block 1 exists) */
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if (!GpeBlock)
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{
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* Runtime option: Should wake GPEs be enabled at runtime? The default
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* is no, they should only be enabled just as the machine goes to sleep.
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*/
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if (AcpiGbl_LeaveWakeGpesDisabled)
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{
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/*
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* Differentiate runtime vs wake GPEs, via the _PRW control methods.
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* Each GPE that has one or more _PRWs that reference it is by
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* definition a wake GPE and will not be enabled while the machine
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* is running.
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*/
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WalkInfo.GpeBlock = GpeBlock;
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WalkInfo.GpeDevice = GpeDevice;
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WalkInfo.ExecuteByOwnerId = FALSE;
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Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
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ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
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AcpiEvMatchPrwAndGpe, NULL, &WalkInfo, NULL);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "While executing _PRW methods"));
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}
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}
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/*
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* Enable all GPEs that have a corresponding method and are not
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* capable of generating wakeups. Any other GPEs within this block
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* must be enabled via the AcpiEnableGpe interface.
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*/
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WakeGpeCount = 0;
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GpeEnabledCount = 0;
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if (GpeDevice == AcpiGbl_FadtGpeDevice)
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{
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GpeDevice = NULL;
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}
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for (i = 0; i < GpeBlock->RegisterCount; i++)
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{
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for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
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{
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/* Get the info block for this particular GPE */
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GpeIndex = (i * ACPI_GPE_REGISTER_WIDTH) + j;
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GpeEventInfo = &GpeBlock->EventInfo[GpeIndex];
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/* Ignore GPEs that can wake the system */
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if (GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE)
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{
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WakeGpeCount++;
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if (AcpiGbl_LeaveWakeGpesDisabled)
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{
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continue;
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}
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}
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/* Ignore GPEs that have no corresponding _Lxx/_Exx method */
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if (!(GpeEventInfo->Flags & ACPI_GPE_DISPATCH_METHOD))
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{
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continue;
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}
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/* Enable this GPE */
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GpeNumber = GpeIndex + GpeBlock->BlockBaseNumber;
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Status = AcpiEnableGpe (GpeDevice, GpeNumber,
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ACPI_GPE_TYPE_RUNTIME);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not enable GPE 0x%02X", GpeNumber));
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continue;
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}
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GpeEnabledCount++;
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}
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}
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if (GpeEnabledCount || WakeGpeCount)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
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"Enabled %u Runtime GPEs, added %u Wake GPEs in this block\n",
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GpeEnabledCount, WakeGpeCount));
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}
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return_ACPI_STATUS (AE_OK);
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}
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