554 lines
18 KiB
C
554 lines
18 KiB
C
/******************************************************************************
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*
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* Module Name: evrgnini- ACPI AddressSpace (OpRegion) init
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* xRevision: 46 $
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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, 2000, 2001, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __EVRGNINI_C__
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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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#include "acinterp.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_EVENTS
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MODULE_NAME ("evrgnini")
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvSystemMemoryRegionSetup
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*
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* PARAMETERS: RegionObj - region we are interested in
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* Function - start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Do any prep work for region handling, a nop for now
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvSystemMemoryRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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FUNCTION_TRACE ("EvSystemMemoryRegionSetup");
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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if (*RegionContext)
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{
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ACPI_MEM_FREE (*RegionContext);
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*RegionContext = NULL;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/* Activate. Create a new context */
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*RegionContext = ACPI_MEM_CALLOCATE (sizeof (ACPI_MEM_SPACE_CONTEXT));
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if (!(*RegionContext))
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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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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*
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* FUNCTION: AcpiEvIoSpaceRegionSetup
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*
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* PARAMETERS: RegionObj - region we are interested in
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* Function - start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Do any prep work for region handling
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvIoSpaceRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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FUNCTION_TRACE ("EvIoSpaceRegionSetup");
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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*RegionContext = NULL;
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}
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else
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{
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*RegionContext = HandlerContext;
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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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*
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* FUNCTION: AcpiEvPciConfigRegionSetup
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*
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* PARAMETERS: RegionObj - region we are interested in
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* Function - start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Do any prep work for region handling
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*
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* MUTEX: Assumes namespace is not locked
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvPciConfigRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_INTEGER Temp;
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ACPI_PCI_ID *PciId = *RegionContext;
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle;
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ACPI_DEVICE_ID ObjectHID;
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FUNCTION_TRACE ("EvPciConfigRegionSetup");
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HandlerObj = RegionObj->Region.AddrHandler;
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if (!HandlerObj)
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{
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/*
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* No installed handler. This shouldn't happen because the dispatch
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* routine checks before we get here, but we check again just in case.
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
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"Attempting to init a region %X, with no handler\n", RegionObj));
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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if (PciId)
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{
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ACPI_MEM_FREE (PciId);
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*RegionContext = NULL;
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}
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return_ACPI_STATUS (Status);
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}
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/* Create a new context */
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PciId = ACPI_MEM_CALLOCATE (sizeof (ACPI_PCI_ID));
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if (!PciId)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/*
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* For PCI Config space access, we have to pass the segment, bus,
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* device and function numbers. This routine must acquire those.
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*/
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/*
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* First get device and function numbers from the _ADR object
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* in the parent's scope.
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*/
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Node = AcpiNsGetParentObject (RegionObj->Region.Node);
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/* AcpiEvaluate the _ADR object */
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node, &Temp);
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/*
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* The default is zero, since the allocation above zeroed the data, just
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* do nothing on failures.
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*/
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if (ACPI_SUCCESS (Status))
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{
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PciId->Device = HIWORD (Temp);
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PciId->Function = LOWORD (Temp);
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}
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/*
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* Get the _SEG and _BBN values from the device upon which the handler
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* is installed.
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*
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* We need to get the _SEG and _BBN objects relative to the PCI BUS device.
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* This is the device the handler has been registered to handle.
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*/
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/*
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* If the AddrHandler.Node is still pointing to the root, we need
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* to scan upward for a PCI Root bridge and re-associate the OpRegion
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* handlers with that device.
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*/
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if (HandlerObj->AddrHandler.Node == AcpiGbl_RootNode)
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{
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/*
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* Node is currently the parent object
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*/
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while (Node != AcpiGbl_RootNode)
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{
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Status = AcpiUtExecute_HID (Node, &ObjectHID);
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if (ACPI_SUCCESS (Status))
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{
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if (!(STRNCMP (ObjectHID.Buffer, PCI_ROOT_HID_STRING,
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sizeof (PCI_ROOT_HID_STRING))))
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{
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AcpiInstallAddressSpaceHandler (Node,
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ACPI_ADR_SPACE_PCI_CONFIG,
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ACPI_DEFAULT_HANDLER, NULL, NULL);
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break;
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}
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}
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Node = AcpiNsGetParentObject (Node);
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}
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}
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else
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{
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Node = HandlerObj->AddrHandler.Node;
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}
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/*
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* The PCI segment number comes from the _SEG method
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*/
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG, Node, &Temp);
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if (ACPI_SUCCESS (Status))
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{
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PciId->Segment = LOWORD (Temp);
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}
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/*
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* The PCI bus number comes from the _BBN method
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*/
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN, Node, &Temp);
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if (ACPI_SUCCESS (Status))
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{
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PciId->Bus = LOWORD (Temp);
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}
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*RegionContext = PciId;
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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: AcpiEvDefaultRegionSetup
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*
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* PARAMETERS: RegionObj - region we are interested in
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* Function - start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Do any prep work for region handling
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvDefaultRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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FUNCTION_TRACE ("EvDefaultRegionSetup");
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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*RegionContext = NULL;
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}
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else
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{
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*RegionContext = HandlerContext;
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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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*
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* FUNCTION: AcpiEvInitializeRegion
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*
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* PARAMETERS: RegionObj - Region we are initializing
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initializes the region, finds any _REG methods and saves them
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* for execution at a later time
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*
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* Get the appropriate address space handler for a newly
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* created region.
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*
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* This also performs address space specific intialization. For
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* example, PCI regions must have an _ADR object that contains
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* a PCI address in the scope of the definition. This address is
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* required to perform an access to PCI config space.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvInitializeRegion (
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ACPI_OPERAND_OBJECT *RegionObj,
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BOOLEAN AcpiNsLocked)
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{
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_ADR_SPACE_TYPE SpaceId;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *MethodNode;
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ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG;
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FUNCTION_TRACE_U32 ("EvInitializeRegion", AcpiNsLocked);
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if (!RegionObj)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Node = AcpiNsGetParentObject (RegionObj->Region.Node);
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SpaceId = RegionObj->Region.SpaceId;
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RegionObj->Region.AddrHandler = NULL;
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RegionObj->Region.Extra->Extra.Method_REG = NULL;
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RegionObj->Region.Flags &= ~(AOPOBJ_INITIALIZED);
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/*
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* Find any "_REG" associated with this region definition
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*/
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Status = AcpiNsSearchNode (*RegNamePtr, Node,
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ACPI_TYPE_METHOD, &MethodNode);
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if (ACPI_SUCCESS (Status))
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{
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/*
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* The _REG method is optional and there can be only one per region
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* definition. This will be executed when the handler is attached
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* or removed
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*/
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RegionObj->Region.Extra->Extra.Method_REG = MethodNode;
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}
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/*
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* The following loop depends upon the root Node having no parent
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* ie: AcpiGbl_RootNode->ParentEntry being set to NULL
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*/
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while (Node)
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{
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/*
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* Check to see if a handler exists
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*/
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HandlerObj = NULL;
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ObjDesc = AcpiNsGetAttachedObject (Node);
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if (ObjDesc)
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{
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/*
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* can only be a handler if the object exists
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*/
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switch (Node->Type)
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{
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case ACPI_TYPE_DEVICE:
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HandlerObj = ObjDesc->Device.AddrHandler;
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break;
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case ACPI_TYPE_PROCESSOR:
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HandlerObj = ObjDesc->Processor.AddrHandler;
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break;
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case ACPI_TYPE_THERMAL:
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HandlerObj = ObjDesc->ThermalZone.AddrHandler;
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break;
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}
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while (HandlerObj)
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{
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/*
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* This guy has at least one address handler
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* see if it has the type we want
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*/
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if (HandlerObj->AddrHandler.SpaceId == SpaceId)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
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"Found handler %p for region %p in obj %p\n",
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HandlerObj, RegionObj, ObjDesc));
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/*
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* Found it! Now update the region and the handler
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*/
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AcpiEvAssociateRegionAndHandler (HandlerObj, RegionObj,
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AcpiNsLocked);
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return_ACPI_STATUS (AE_OK);
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}
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HandlerObj = HandlerObj->AddrHandler.Next;
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} /* while handlerobj */
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}
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/*
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* This one does not have the handler we need
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* Pop up one level
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*/
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Node = AcpiNsGetParentObject (Node);
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} /* while Node != ROOT */
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/*
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* If we get here, there is no handler for this region
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
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"No handler for RegionType %s(%X) (RegionObj %p)\n",
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AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj));
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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