9560b6dea8
- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
800 lines
26 KiB
C
800 lines
26 KiB
C
/******************************************************************************
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*
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* Module Name: evrgnini- ACPI AddressSpace (OpRegion) init
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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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#define __EVRGNINI_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evrgnini")
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/* Local prototypes */
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static BOOLEAN
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AcpiEvIsPciRootBridge (
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ACPI_NAMESPACE_NODE *Node);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvSystemMemoryRegionSetup
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*
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* PARAMETERS: Handle - 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: Setup a SystemMemory operation region
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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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ACPI_OPERAND_OBJECT *RegionDesc = (ACPI_OPERAND_OBJECT *) Handle;
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ACPI_MEM_SPACE_CONTEXT *LocalRegionContext;
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ACPI_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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LocalRegionContext = (ACPI_MEM_SPACE_CONTEXT *) *RegionContext;
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/* Delete a cached mapping if present */
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if (LocalRegionContext->MappedLength)
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{
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AcpiOsUnmapMemory (LocalRegionContext->MappedLogicalAddress,
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LocalRegionContext->MappedLength);
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}
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ACPI_FREE (LocalRegionContext);
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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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/* Create a new context */
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LocalRegionContext = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_MEM_SPACE_CONTEXT));
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if (!(LocalRegionContext))
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Save the region length and address for use in the handler */
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LocalRegionContext->Length = RegionDesc->Region.Length;
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LocalRegionContext->Address = RegionDesc->Region.Address;
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*RegionContext = LocalRegionContext;
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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: Handle - 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: Setup a IO operation region
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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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ACPI_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: Handle - 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: Setup a PCI_Config operation region
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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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UINT64 PciValue;
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ACPI_PCI_ID *PciId = *RegionContext;
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_NAMESPACE_NODE *ParentNode;
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ACPI_NAMESPACE_NODE *PciRootNode;
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ACPI_NAMESPACE_NODE *PciDeviceNode;
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ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle;
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ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);
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HandlerObj = RegionObj->Region.Handler;
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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 %p, with no handler\n", RegionObj));
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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*RegionContext = NULL;
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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_FREE (PciId);
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}
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return_ACPI_STATUS (Status);
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}
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ParentNode = RegionObj->Region.Node->Parent;
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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 AddressSpace.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->AddressSpace.Node == AcpiGbl_RootNode)
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{
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/* Start search from the parent object */
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PciRootNode = ParentNode;
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while (PciRootNode != AcpiGbl_RootNode)
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{
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/* Get the _HID/_CID in order to detect a RootBridge */
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if (AcpiEvIsPciRootBridge (PciRootNode))
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{
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/* Install a handler for this PCI root bridge */
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Status = AcpiInstallAddressSpaceHandler (
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(ACPI_HANDLE) PciRootNode,
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ACPI_ADR_SPACE_PCI_CONFIG,
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ACPI_DEFAULT_HANDLER, NULL, NULL);
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if (ACPI_FAILURE (Status))
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{
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if (Status == AE_SAME_HANDLER)
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{
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/*
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* It is OK if the handler is already installed on the
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* root bridge. Still need to return a context object
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* for the new PCI_Config operation region, however.
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*/
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Status = AE_OK;
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}
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else
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not install PciConfig handler "
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"for Root Bridge %4.4s",
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AcpiUtGetNodeName (PciRootNode)));
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}
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}
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break;
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}
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PciRootNode = PciRootNode->Parent;
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}
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/* PCI root bridge not found, use namespace root node */
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}
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else
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{
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PciRootNode = HandlerObj->AddressSpace.Node;
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}
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/*
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* If this region is now initialized, we are done.
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* (InstallAddressSpaceHandler could have initialized it)
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*/
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if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
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{
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return_ACPI_STATUS (AE_OK);
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}
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/* Region is still not initialized. Create a new context */
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PciId = ACPI_ALLOCATE_ZEROED (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 need the segment, bus, device and
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* function numbers. Acquire them here.
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*
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* Find the parent device object. (This allows the operation region to be
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* within a subscope under the device, such as a control method.)
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*/
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PciDeviceNode = RegionObj->Region.Node;
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while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
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{
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PciDeviceNode = PciDeviceNode->Parent;
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}
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if (!PciDeviceNode)
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{
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ACPI_FREE (PciId);
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/*
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* Get the PCI device and function numbers from the _ADR object contained
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* in the parent's scope.
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*/
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
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PciDeviceNode, &PciValue);
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/*
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* The default is zero, and since the allocation above zeroed the data,
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* just do nothing on failure.
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*/
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if (ACPI_SUCCESS (Status))
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{
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PciId->Device = ACPI_HIWORD (ACPI_LODWORD (PciValue));
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PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
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}
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/* The PCI segment number comes from the _SEG method */
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG,
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PciRootNode, &PciValue);
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if (ACPI_SUCCESS (Status))
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{
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PciId->Segment = ACPI_LOWORD (PciValue);
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}
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/* The PCI bus number comes from the _BBN method */
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN,
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PciRootNode, &PciValue);
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if (ACPI_SUCCESS (Status))
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{
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PciId->Bus = ACPI_LOWORD (PciValue);
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}
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/* Complete this device's PciId */
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AcpiOsDerivePciId (PciRootNode, RegionObj->Region.Node, &PciId);
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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: AcpiEvIsPciRootBridge
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*
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* PARAMETERS: Node - Device node being examined
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*
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* RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
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*
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* DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
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* examining the _HID and _CID for the device.
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*
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******************************************************************************/
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static BOOLEAN
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AcpiEvIsPciRootBridge (
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ACPI_NAMESPACE_NODE *Node)
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{
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ACPI_STATUS Status;
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ACPI_DEVICE_ID *Hid;
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ACPI_DEVICE_ID_LIST *Cid;
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UINT32 i;
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BOOLEAN Match;
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/* Get the _HID and check for a PCI Root Bridge */
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Status = AcpiUtExecute_HID (Node, &Hid);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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Match = AcpiUtIsPciRootBridge (Hid->String);
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ACPI_FREE (Hid);
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if (Match)
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{
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return (TRUE);
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}
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/* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
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Status = AcpiUtExecute_CID (Node, &Cid);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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/* Check all _CIDs in the returned list */
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for (i = 0; i < Cid->Count; i++)
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{
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if (AcpiUtIsPciRootBridge (Cid->Ids[i].String))
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{
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ACPI_FREE (Cid);
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return (TRUE);
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}
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}
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ACPI_FREE (Cid);
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvPciBarRegionSetup
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*
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* PARAMETERS: Handle - 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: Setup a PciBAR operation region
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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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AcpiEvPciBarRegionSetup (
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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_FUNCTION_TRACE (EvPciBarRegionSetup);
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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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*
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* FUNCTION: AcpiEvCmosRegionSetup
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*
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* PARAMETERS: Handle - 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: Setup a CMOS operation region
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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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AcpiEvCmosRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
|
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void *HandlerContext,
|
|
void **RegionContext)
|
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{
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ACPI_FUNCTION_TRACE (EvCmosRegionSetup);
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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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*
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* FUNCTION: AcpiEvDefaultRegionSetup
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|
*
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* PARAMETERS: Handle - Region we are interested in
|
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* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
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* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Default region initialization
|
|
*
|
|
******************************************************************************/
|
|
|
|
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,
|
|
void **RegionContext)
|
|
{
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ACPI_FUNCTION_TRACE (EvDefaultRegionSetup);
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|
|
|
|
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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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*RegionContext = HandlerContext;
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}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInitializeRegion
|
|
*
|
|
* PARAMETERS: RegionObj - Region we are initializing
|
|
* AcpiNsLocked - Is namespace locked?
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initializes the region, finds any _REG methods and saves them
|
|
* for execution at a later time
|
|
*
|
|
* Get the appropriate address space handler for a newly
|
|
* created region.
|
|
*
|
|
* This also performs address space specific initialization. For
|
|
* example, PCI regions must have an _ADR object that contains
|
|
* a PCI address in the scope of the definition. This address is
|
|
* required to perform an access to PCI config space.
|
|
*
|
|
* MUTEX: Interpreter should be unlocked, because we may run the _REG
|
|
* method for this region.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvInitializeRegion (
|
|
ACPI_OPERAND_OBJECT *RegionObj,
|
|
BOOLEAN AcpiNsLocked)
|
|
{
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_ADR_SPACE_TYPE SpaceId;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *MethodNode;
|
|
ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG;
|
|
ACPI_OPERAND_OBJECT *RegionObj2;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked);
|
|
|
|
|
|
if (!RegionObj)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
|
|
if (!RegionObj2)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
Node = RegionObj->Region.Node->Parent;
|
|
SpaceId = RegionObj->Region.SpaceId;
|
|
|
|
/* Setup defaults */
|
|
|
|
RegionObj->Region.Handler = NULL;
|
|
RegionObj2->Extra.Method_REG = NULL;
|
|
RegionObj->Common.Flags &= ~(AOPOBJ_SETUP_COMPLETE);
|
|
RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED;
|
|
|
|
/* Find any "_REG" method associated with this region definition */
|
|
|
|
Status = AcpiNsSearchOneScope (
|
|
*RegNamePtr, Node, ACPI_TYPE_METHOD, &MethodNode);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/*
|
|
* The _REG method is optional and there can be only one per region
|
|
* definition. This will be executed when the handler is attached
|
|
* or removed
|
|
*/
|
|
RegionObj2->Extra.Method_REG = MethodNode;
|
|
}
|
|
|
|
/*
|
|
* The following loop depends upon the root Node having no parent
|
|
* ie: AcpiGbl_RootNode->ParentEntry being set to NULL
|
|
*/
|
|
while (Node)
|
|
{
|
|
/* Check to see if a handler exists */
|
|
|
|
HandlerObj = NULL;
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (ObjDesc)
|
|
{
|
|
/* Can only be a handler if the object exists */
|
|
|
|
switch (Node->Type)
|
|
{
|
|
case ACPI_TYPE_DEVICE:
|
|
|
|
HandlerObj = ObjDesc->Device.Handler;
|
|
break;
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
|
|
|
HandlerObj = ObjDesc->Processor.Handler;
|
|
break;
|
|
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
HandlerObj = ObjDesc->ThermalZone.Handler;
|
|
break;
|
|
|
|
case ACPI_TYPE_METHOD:
|
|
/*
|
|
* If we are executing module level code, the original
|
|
* Node's object was replaced by this Method object and we
|
|
* saved the handler in the method object.
|
|
*
|
|
* See AcpiNsExecModuleCode
|
|
*/
|
|
if (ObjDesc->Method.Flags & AOPOBJ_MODULE_LEVEL)
|
|
{
|
|
HandlerObj = ObjDesc->Method.Extra.Handler;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* Ignore other objects */
|
|
break;
|
|
}
|
|
|
|
while (HandlerObj)
|
|
{
|
|
/* Is this handler of the correct type? */
|
|
|
|
if (HandlerObj->AddressSpace.SpaceId == SpaceId)
|
|
{
|
|
/* Found correct handler */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Found handler %p for region %p in obj %p\n",
|
|
HandlerObj, RegionObj, ObjDesc));
|
|
|
|
Status = AcpiEvAttachRegion (HandlerObj, RegionObj,
|
|
AcpiNsLocked);
|
|
|
|
/*
|
|
* Tell all users that this region is usable by
|
|
* running the _REG method
|
|
*/
|
|
if (AcpiNsLocked)
|
|
{
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
Status = AcpiEvExecuteRegMethod (RegionObj, 1);
|
|
|
|
if (AcpiNsLocked)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Try next handler in the list */
|
|
|
|
HandlerObj = HandlerObj->AddressSpace.Next;
|
|
}
|
|
}
|
|
|
|
/* This node does not have the handler we need; Pop up one level */
|
|
|
|
Node = Node->Parent;
|
|
}
|
|
|
|
/* If we get here, there is no handler for this region */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"No handler for RegionType %s(%X) (RegionObj %p)\n",
|
|
AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj));
|
|
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|