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
845 lines
27 KiB
C
845 lines
27 KiB
C
/*******************************************************************************
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*
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* Module Name: dsmthdat - control method arguments and local variables
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*
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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
|
|
* Code or modification with rights to further distribute source must include
|
|
* the above Copyright Notice, the above License, this list of Conditions,
|
|
* 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
|
|
* contain a file documenting the changes Licensee made to create that Covered
|
|
* Code and the date of any change. Licensee must include in that file the
|
|
* documentation of any changes made by any predecessor Licensee. Licensee
|
|
* must include a prominent statement that the modification is derived,
|
|
* 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.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification without rights to further distribute source must
|
|
* include the following Disclaimer and Export Compliance provision in the
|
|
* documentation and/or other materials provided with distribution. In
|
|
* addition, Licensee may not authorize further sublicense of source of any
|
|
* portion of the Covered Code, and must include terms to the effect that the
|
|
* license from Licensee to its licensee is limited to the intellectual
|
|
* 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
|
|
* event Licensee exports any such software from the United States or
|
|
* 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
|
|
* 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 __DSMTHDAT_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acdispat.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME ("dsmthdat")
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/* Local prototypes */
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static void
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AcpiDsMethodDataDeleteValue (
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UINT8 Type,
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UINT32 Index,
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ACPI_WALK_STATE *WalkState);
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static ACPI_STATUS
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AcpiDsMethodDataSetValue (
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UINT8 Type,
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UINT32 Index,
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ACPI_OPERAND_OBJECT *Object,
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ACPI_WALK_STATE *WalkState);
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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ACPI_OBJECT_TYPE
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AcpiDsMethodDataGetType (
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UINT16 Opcode,
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UINT32 Index,
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ACPI_WALK_STATE *WalkState);
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#endif
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsMethodDataInit
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*
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* PARAMETERS: WalkState - Current walk state object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize the data structures that hold the method's arguments
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* and locals. The data struct is an array of namespace nodes for
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* each - this allows RefOf and DeRefOf to work properly for these
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* special data types.
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*
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* NOTES: WalkState fields are initialized to zero by the
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* ACPI_ALLOCATE_ZEROED().
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*
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* A pseudo-Namespace Node is assigned to each argument and local
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* so that RefOf() can return a pointer to the Node.
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*
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******************************************************************************/
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void
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AcpiDsMethodDataInit (
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ACPI_WALK_STATE *WalkState)
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{
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UINT32 i;
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ACPI_FUNCTION_TRACE (DsMethodDataInit);
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|
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/* Init the method arguments */
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for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
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{
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ACPI_MOVE_32_TO_32 (&WalkState->Arguments[i].Name, NAMEOF_ARG_NTE);
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WalkState->Arguments[i].Name.Integer |= (i << 24);
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WalkState->Arguments[i].DescriptorType = ACPI_DESC_TYPE_NAMED;
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WalkState->Arguments[i].Type = ACPI_TYPE_ANY;
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WalkState->Arguments[i].Flags = ANOBJ_METHOD_ARG;
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}
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/* Init the method locals */
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for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++)
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{
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ACPI_MOVE_32_TO_32 (&WalkState->LocalVariables[i].Name, NAMEOF_LOCAL_NTE);
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WalkState->LocalVariables[i].Name.Integer |= (i << 24);
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WalkState->LocalVariables[i].DescriptorType = ACPI_DESC_TYPE_NAMED;
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WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY;
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WalkState->LocalVariables[i].Flags = ANOBJ_METHOD_LOCAL;
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}
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsMethodDataDeleteAll
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*
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* PARAMETERS: WalkState - Current walk state object
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*
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* RETURN: None
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*
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* DESCRIPTION: Delete method locals and arguments. Arguments are only
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* deleted if this method was called from another method.
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*
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******************************************************************************/
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void
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AcpiDsMethodDataDeleteAll (
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ACPI_WALK_STATE *WalkState)
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{
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UINT32 Index;
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ACPI_FUNCTION_TRACE (DsMethodDataDeleteAll);
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|
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/* Detach the locals */
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for (Index = 0; Index < ACPI_METHOD_NUM_LOCALS; Index++)
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{
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if (WalkState->LocalVariables[Index].Object)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%u=%p\n",
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Index, WalkState->LocalVariables[Index].Object));
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/* Detach object (if present) and remove a reference */
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AcpiNsDetachObject (&WalkState->LocalVariables[Index]);
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}
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}
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/* Detach the arguments */
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for (Index = 0; Index < ACPI_METHOD_NUM_ARGS; Index++)
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{
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if (WalkState->Arguments[Index].Object)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%u=%p\n",
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Index, WalkState->Arguments[Index].Object));
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/* Detach object (if present) and remove a reference */
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AcpiNsDetachObject (&WalkState->Arguments[Index]);
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}
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}
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return_VOID;
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}
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|
|
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsMethodDataInitArgs
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*
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* PARAMETERS: *Params - Pointer to a parameter list for the method
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* MaxParamCount - The arg count for this method
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* WalkState - Current walk state object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize arguments for a method. The parameter list is a list
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* of ACPI operand objects, either null terminated or whose length
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* is defined by MaxParamCount.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsMethodDataInitArgs (
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ACPI_OPERAND_OBJECT **Params,
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UINT32 MaxParamCount,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status;
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UINT32 Index = 0;
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|
|
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ACPI_FUNCTION_TRACE_PTR (DsMethodDataInitArgs, Params);
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|
|
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if (!Params)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "No param list passed to method\n"));
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return_ACPI_STATUS (AE_OK);
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}
|
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|
|
/* Copy passed parameters into the new method stack frame */
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|
|
while ((Index < ACPI_METHOD_NUM_ARGS) &&
|
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(Index < MaxParamCount) &&
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Params[Index])
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{
|
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/*
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* A valid parameter.
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* Store the argument in the method/walk descriptor.
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* Do not copy the arg in order to implement call by reference
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*/
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Status = AcpiDsMethodDataSetValue (ACPI_REFCLASS_ARG, Index,
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Params[Index], WalkState);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
|
|
}
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Index++;
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}
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|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%u args passed to method\n", Index));
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return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
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|
* FUNCTION: AcpiDsMethodDataGetNode
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|
*
|
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* PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or
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* ACPI_REFCLASS_ARG
|
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* Index - Which Local or Arg whose type to get
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* WalkState - Current walk state object
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* Node - Where the node is returned.
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*
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* RETURN: Status and node
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*
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* DESCRIPTION: Get the Node associated with a local or arg.
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*
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******************************************************************************/
|
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|
ACPI_STATUS
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AcpiDsMethodDataGetNode (
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UINT8 Type,
|
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UINT32 Index,
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ACPI_WALK_STATE *WalkState,
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ACPI_NAMESPACE_NODE **Node)
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|
{
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ACPI_FUNCTION_TRACE (DsMethodDataGetNode);
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|
|
|
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/*
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* Method Locals and Arguments are supported
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*/
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switch (Type)
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{
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case ACPI_REFCLASS_LOCAL:
|
|
|
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if (Index > ACPI_METHOD_MAX_LOCAL)
|
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{
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ACPI_ERROR ((AE_INFO,
|
|
"Local index %u is invalid (max %u)",
|
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Index, ACPI_METHOD_MAX_LOCAL));
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return_ACPI_STATUS (AE_AML_INVALID_INDEX);
|
|
}
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|
|
/* Return a pointer to the pseudo-node */
|
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|
|
*Node = &WalkState->LocalVariables[Index];
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break;
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|
|
|
case ACPI_REFCLASS_ARG:
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|
|
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if (Index > ACPI_METHOD_MAX_ARG)
|
|
{
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ACPI_ERROR ((AE_INFO,
|
|
"Arg index %u is invalid (max %u)",
|
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Index, ACPI_METHOD_MAX_ARG));
|
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return_ACPI_STATUS (AE_AML_INVALID_INDEX);
|
|
}
|
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|
|
/* Return a pointer to the pseudo-node */
|
|
|
|
*Node = &WalkState->Arguments[Index];
|
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break;
|
|
|
|
default:
|
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ACPI_ERROR ((AE_INFO, "Type %u is invalid", Type));
|
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return_ACPI_STATUS (AE_TYPE);
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataSetValue
|
|
*
|
|
* PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or
|
|
* ACPI_REFCLASS_ARG
|
|
* Index - Which Local or Arg to get
|
|
* Object - Object to be inserted into the stack entry
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
|
|
* Note: There is no "implicit conversion" for locals.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiDsMethodDataSetValue (
|
|
UINT8 Type,
|
|
UINT32 Index,
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsMethodDataSetValue);
|
|
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"NewObj %p Type %2.2X, Refs=%u [%s]\n", Object,
|
|
Type, Object->Common.ReferenceCount,
|
|
AcpiUtGetTypeName (Object->Common.Type)));
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Increment ref count so object can't be deleted while installed.
|
|
* NOTE: We do not copy the object in order to preserve the call by
|
|
* reference semantics of ACPI Control Method invocation.
|
|
* (See ACPI Specification 2.0C)
|
|
*/
|
|
AcpiUtAddReference (Object);
|
|
|
|
/* Install the object */
|
|
|
|
Node->Object = Object;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataGetValue
|
|
*
|
|
* PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or
|
|
* ACPI_REFCLASS_ARG
|
|
* Index - Which localVar or argument to get
|
|
* WalkState - Current walk state object
|
|
* DestDesc - Where Arg or Local value is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Retrieve value of selected Arg or Local for this method
|
|
* Used only in AcpiExResolveToValue().
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataGetValue (
|
|
UINT8 Type,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_OPERAND_OBJECT **DestDesc)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsMethodDataGetValue);
|
|
|
|
|
|
/* Validate the object descriptor */
|
|
|
|
if (!DestDesc)
|
|
{
|
|
ACPI_ERROR ((AE_INFO, "Null object descriptor pointer"));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Get the object from the node */
|
|
|
|
Object = Node->Object;
|
|
|
|
/* Examine the returned object, it must be valid. */
|
|
|
|
if (!Object)
|
|
{
|
|
/*
|
|
* Index points to uninitialized object.
|
|
* This means that either 1) The expected argument was
|
|
* not passed to the method, or 2) A local variable
|
|
* was referenced by the method (via the ASL)
|
|
* before it was initialized. Either case is an error.
|
|
*/
|
|
|
|
/* If slack enabled, init the LocalX/ArgX to an Integer of value zero */
|
|
|
|
if (AcpiGbl_EnableInterpreterSlack)
|
|
{
|
|
Object = AcpiUtCreateIntegerObject ((UINT64) 0);
|
|
if (!Object)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Node->Object = Object;
|
|
}
|
|
|
|
/* Otherwise, return the error */
|
|
|
|
else switch (Type)
|
|
{
|
|
case ACPI_REFCLASS_ARG:
|
|
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Uninitialized Arg[%u] at node %p",
|
|
Index, Node));
|
|
|
|
return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
|
|
|
|
case ACPI_REFCLASS_LOCAL:
|
|
|
|
/*
|
|
* No error message for this case, will be trapped again later to
|
|
* detect and ignore cases of Store(LocalX,LocalX)
|
|
*/
|
|
return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
|
|
|
|
default:
|
|
|
|
ACPI_ERROR ((AE_INFO, "Not a Arg/Local opcode: 0x%X", Type));
|
|
return_ACPI_STATUS (AE_AML_INTERNAL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The Index points to an initialized and valid object.
|
|
* Return an additional reference to the object
|
|
*/
|
|
*DestDesc = Object;
|
|
AcpiUtAddReference (Object);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataDeleteValue
|
|
*
|
|
* PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or
|
|
* ACPI_REFCLASS_ARG
|
|
* Index - Which localVar or argument to delete
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Delete the entry at Opcode:Index. Inserts
|
|
* a null into the stack slot after the object is deleted.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiDsMethodDataDeleteValue (
|
|
UINT8 Type,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsMethodDataDeleteValue);
|
|
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
/* Get the associated object */
|
|
|
|
Object = AcpiNsGetAttachedObject (Node);
|
|
|
|
/*
|
|
* Undefine the Arg or Local by setting its descriptor
|
|
* pointer to NULL. Locals/Args can contain both
|
|
* ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
|
|
*/
|
|
Node->Object = NULL;
|
|
|
|
if ((Object) &&
|
|
(ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_OPERAND))
|
|
{
|
|
/*
|
|
* There is a valid object.
|
|
* Decrement the reference count by one to balance the
|
|
* increment when the object was stored.
|
|
*/
|
|
AcpiUtRemoveReference (Object);
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsStoreObjectToLocal
|
|
*
|
|
* PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or
|
|
* ACPI_REFCLASS_ARG
|
|
* Index - Which Local or Arg to set
|
|
* ObjDesc - Value to be stored
|
|
* WalkState - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Store a value in an Arg or Local. The ObjDesc is installed
|
|
* as the new value for the Arg or Local and the reference count
|
|
* for ObjDesc is incremented.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsStoreObjectToLocal (
|
|
UINT8 Type,
|
|
UINT32 Index,
|
|
ACPI_OPERAND_OBJECT *ObjDesc,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_OPERAND_OBJECT *CurrentObjDesc;
|
|
ACPI_OPERAND_OBJECT *NewObjDesc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsStoreObjectToLocal);
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Type=%2.2X Index=%u Obj=%p\n",
|
|
Type, Index, ObjDesc));
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
CurrentObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (CurrentObjDesc == ObjDesc)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",
|
|
ObjDesc));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* If the reference count on the object is more than one, we must
|
|
* take a copy of the object before we store. A reference count
|
|
* of exactly 1 means that the object was just created during the
|
|
* evaluation of an expression, and we can safely use it since it
|
|
* is not used anywhere else.
|
|
*/
|
|
NewObjDesc = ObjDesc;
|
|
if (ObjDesc->Common.ReferenceCount > 1)
|
|
{
|
|
Status = AcpiUtCopyIobjectToIobject (ObjDesc, &NewObjDesc, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If there is an object already in this slot, we either
|
|
* have to delete it, or if this is an argument and there
|
|
* is an object reference stored there, we have to do
|
|
* an indirect store!
|
|
*/
|
|
if (CurrentObjDesc)
|
|
{
|
|
/*
|
|
* Check for an indirect store if an argument
|
|
* contains an object reference (stored as an Node).
|
|
* We don't allow this automatic dereferencing for
|
|
* locals, since a store to a local should overwrite
|
|
* anything there, including an object reference.
|
|
*
|
|
* If both Arg0 and Local0 contain RefOf (Local4):
|
|
*
|
|
* Store (1, Arg0) - Causes indirect store to local4
|
|
* Store (1, Local0) - Stores 1 in local0, overwriting
|
|
* the reference to local4
|
|
* Store (1, DeRefof (Local0)) - Causes indirect store to local4
|
|
*
|
|
* Weird, but true.
|
|
*/
|
|
if (Type == ACPI_REFCLASS_ARG)
|
|
{
|
|
/*
|
|
* If we have a valid reference object that came from RefOf(),
|
|
* do the indirect store
|
|
*/
|
|
if ((ACPI_GET_DESCRIPTOR_TYPE (CurrentObjDesc) == ACPI_DESC_TYPE_OPERAND) &&
|
|
(CurrentObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
|
|
(CurrentObjDesc->Reference.Class == ACPI_REFCLASS_REFOF))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Arg (%p) is an ObjRef(Node), storing in node %p\n",
|
|
NewObjDesc, CurrentObjDesc));
|
|
|
|
/*
|
|
* Store this object to the Node (perform the indirect store)
|
|
* NOTE: No implicit conversion is performed, as per the ACPI
|
|
* specification rules on storing to Locals/Args.
|
|
*/
|
|
Status = AcpiExStoreObjectToNode (NewObjDesc,
|
|
CurrentObjDesc->Reference.Object, WalkState,
|
|
ACPI_NO_IMPLICIT_CONVERSION);
|
|
|
|
/* Remove local reference if we copied the object above */
|
|
|
|
if (NewObjDesc != ObjDesc)
|
|
{
|
|
AcpiUtRemoveReference (NewObjDesc);
|
|
}
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
/* Delete the existing object before storing the new one */
|
|
|
|
AcpiDsMethodDataDeleteValue (Type, Index, WalkState);
|
|
}
|
|
|
|
/*
|
|
* Install the Obj descriptor (*NewObjDesc) into
|
|
* the descriptor for the Arg or Local.
|
|
* (increments the object reference count by one)
|
|
*/
|
|
Status = AcpiDsMethodDataSetValue (Type, Index, NewObjDesc, WalkState);
|
|
|
|
/* Remove local reference if we copied the object above */
|
|
|
|
if (NewObjDesc != ObjDesc)
|
|
{
|
|
AcpiUtRemoveReference (NewObjDesc);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
#ifdef ACPI_OBSOLETE_FUNCTIONS
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataGetType
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which Local or Arg whose type to get
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: Data type of current value of the selected Arg or Local
|
|
*
|
|
* DESCRIPTION: Get the type of the object stored in the Local or Arg
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_OBJECT_TYPE
|
|
AcpiDsMethodDataGetType (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsMethodDataGetType);
|
|
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VALUE ((ACPI_TYPE_NOT_FOUND));
|
|
}
|
|
|
|
/* Get the object */
|
|
|
|
Object = AcpiNsGetAttachedObject (Node);
|
|
if (!Object)
|
|
{
|
|
/* Uninitialized local/arg, return TYPE_ANY */
|
|
|
|
return_VALUE (ACPI_TYPE_ANY);
|
|
}
|
|
|
|
/* Get the object type */
|
|
|
|
return_VALUE (Object->Type);
|
|
}
|
|
#endif
|
|
|
|
|