820 lines
24 KiB
C
820 lines
24 KiB
C
/******************************************************************************
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*
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* Module Name: dsobject - Dispatcher object management routines
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* $Revision: 76 $
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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 __DSOBJECT_C__
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#include "acpi.h"
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#include "acparser.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_DISPATCHER
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MODULE_NAME ("dsobject")
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsInitOneObject
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*
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* PARAMETERS: ObjHandle - Node
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* Level - Current nesting level
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* Context - Points to a init info struct
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* ReturnValue - Not used
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*
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* RETURN: Status
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*
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* DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
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* within the namespace.
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*
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* Currently, the only objects that require initialization are:
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* 1) Methods
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* 2) Op Regions
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsInitOneObject (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue)
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{
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ACPI_OBJECT_TYPE8 Type;
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ACPI_STATUS Status;
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ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
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UINT8 TableRevision;
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PROC_NAME ("DsInitOneObject");
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Info->ObjectCount++;
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TableRevision = Info->TableDesc->Pointer->Revision;
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/*
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* We are only interested in objects owned by the table that
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* was just loaded
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*/
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if (((ACPI_NAMESPACE_NODE *) ObjHandle)->OwnerId !=
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Info->TableDesc->TableId)
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{
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return (AE_OK);
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}
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/* And even then, we are only interested in a few object types */
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Type = AcpiNsGetType (ObjHandle);
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switch (Type)
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{
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case ACPI_TYPE_REGION:
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AcpiDsInitializeRegion (ObjHandle);
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Info->OpRegionCount++;
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break;
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case ACPI_TYPE_METHOD:
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Info->MethodCount++;
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if (!(AcpiDbgLevel & ACPI_LV_INIT))
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{
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "."));
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}
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/*
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* Set the execution data width (32 or 64) based upon the
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* revision number of the parent ACPI table.
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*/
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if (TableRevision == 1)
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{
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((ACPI_NAMESPACE_NODE *)ObjHandle)->Flags |= ANOBJ_DATA_WIDTH_32;
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}
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/*
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* Always parse methods to detect errors, we may delete
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* the parse tree below
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*/
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Status = AcpiDsParseMethod (ObjHandle);
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",
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ObjHandle, &((ACPI_NAMESPACE_NODE *)ObjHandle)->Name,
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AcpiFormatException (Status)));
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/* This parse failed, but we will continue parsing more methods */
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break;
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}
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/*
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* Delete the parse tree. We simple re-parse the method
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* for every execution since there isn't much overhead
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*/
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AcpiNsDeleteNamespaceSubtree (ObjHandle);
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break;
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default:
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break;
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}
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/*
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* We ignore errors from above, and always return OK, since
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* we don't want to abort the walk on a single error.
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*/
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsInitializeObjects
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk the entire namespace and perform any necessary
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* initialization on the objects found therein
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsInitializeObjects (
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ACPI_TABLE_DESC *TableDesc,
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ACPI_NAMESPACE_NODE *StartNode)
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{
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ACPI_STATUS Status;
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ACPI_INIT_WALK_INFO Info;
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FUNCTION_TRACE ("DsInitializeObjects");
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"**** Starting initialization of namespace objects ****\n"));
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "Parsing Methods:"));
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Info.MethodCount = 0;
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Info.OpRegionCount = 0;
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Info.ObjectCount = 0;
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Info.TableDesc = TableDesc;
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/* Walk entire namespace from the supplied root */
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Status = AcpiWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
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AcpiDsInitOneObject, &Info, NULL);
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %x\n", Status));
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}
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
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"\n%d Control Methods found and parsed (%d nodes total)\n",
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Info.MethodCount, Info.ObjectCount));
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"%d Control Methods found\n", Info.MethodCount));
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"%d Op Regions found\n", Info.OpRegionCount));
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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: AcpiDsInitObjectFromOp
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*
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* PARAMETERS: Op - Parser op used to init the internal object
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* Opcode - AML opcode associated with the object
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* ObjDesc - Namespace object to be initialized
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize a namespace object from a parser Op and its
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* associated arguments. The namespace object is a more compact
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* representation of the Op and its arguments.
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*
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****************************************************************************/
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ACPI_STATUS
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AcpiDsInitObjectFromOp (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT *Op,
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UINT16 Opcode,
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ACPI_OPERAND_OBJECT **RetObjDesc)
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{
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ACPI_STATUS Status;
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ACPI_PARSE_OBJECT *Arg;
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ACPI_PARSE2_OBJECT *ByteList;
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ACPI_OPERAND_OBJECT *ArgDesc;
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const ACPI_OPCODE_INFO *OpInfo;
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ACPI_OPERAND_OBJECT *ObjDesc;
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PROC_NAME ("DsInitObjectFromOp");
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ObjDesc = *RetObjDesc;
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OpInfo = AcpiPsGetOpcodeInfo (Opcode);
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if (ACPI_GET_OP_TYPE (OpInfo) != ACPI_OP_TYPE_OPCODE)
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{
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/* Unknown opcode */
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return (AE_TYPE);
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}
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/* Get and prepare the first argument */
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_BUFFER:
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/* First arg is a number */
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AcpiDsCreateOperand (WalkState, Op->Value.Arg, 0);
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ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
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AcpiDsObjStackPop (1, WalkState);
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/* Resolve the object (could be an arg or local) */
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Status = AcpiExResolveToValue (&ArgDesc, WalkState);
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if (ACPI_FAILURE (Status))
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{
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AcpiUtRemoveReference (ArgDesc);
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return (Status);
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}
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/* We are expecting a number */
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if (ArgDesc->Common.Type != ACPI_TYPE_INTEGER)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Expecting number, got obj: %p type %X\n",
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ArgDesc, ArgDesc->Common.Type));
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AcpiUtRemoveReference (ArgDesc);
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return (AE_TYPE);
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}
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/* Get the value, delete the internal object */
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ObjDesc->Buffer.Length = (UINT32) ArgDesc->Integer.Value;
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AcpiUtRemoveReference (ArgDesc);
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/* Allocate the buffer */
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if (ObjDesc->Buffer.Length == 0)
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{
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ObjDesc->Buffer.Pointer = NULL;
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REPORT_WARNING (("Buffer created with zero length in AML\n"));
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break;
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}
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else
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{
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ObjDesc->Buffer.Pointer = ACPI_MEM_CALLOCATE (
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ObjDesc->Buffer.Length);
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if (!ObjDesc->Buffer.Pointer)
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{
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return (AE_NO_MEMORY);
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}
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}
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/*
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* Second arg is the buffer data (optional) ByteList can be either
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* individual bytes or a string initializer.
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*/
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Arg = Op->Value.Arg; /* skip first arg */
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ByteList = (ACPI_PARSE2_OBJECT *) Arg->Next;
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if (ByteList)
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{
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if (ByteList->Opcode != AML_INT_BYTELIST_OP)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Expecting bytelist, got: %x\n",
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ByteList));
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return (AE_TYPE);
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}
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MEMCPY (ObjDesc->Buffer.Pointer, ByteList->Data,
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ObjDesc->Buffer.Length);
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}
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break;
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case ACPI_TYPE_PACKAGE:
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/*
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* When called, an internal package object has already been built and
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* is pointed to by ObjDesc. AcpiDsBuildInternalObject builds another
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* internal package object, so remove reference to the original so
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* that it is deleted. Error checking is done within the remove
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* reference function.
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*/
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AcpiUtRemoveReference (ObjDesc);
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Status = AcpiDsBuildInternalObject (WalkState, Op, RetObjDesc);
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break;
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case ACPI_TYPE_INTEGER:
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ObjDesc->Integer.Value = Op->Value.Integer;
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break;
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case ACPI_TYPE_STRING:
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ObjDesc->String.Pointer = Op->Value.String;
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ObjDesc->String.Length = STRLEN (Op->Value.String);
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/*
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* The string is contained in the ACPI table, don't ever try
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* to delete it
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*/
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ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER;
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break;
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case ACPI_TYPE_METHOD:
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break;
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case INTERNAL_TYPE_REFERENCE:
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switch (ACPI_GET_OP_CLASS (OpInfo))
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{
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case OPTYPE_LOCAL_VARIABLE:
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/* Split the opcode into a base opcode + offset */
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ObjDesc->Reference.Opcode = AML_LOCAL_OP;
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ObjDesc->Reference.Offset = Opcode - AML_LOCAL_OP;
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break;
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case OPTYPE_METHOD_ARGUMENT:
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/* Split the opcode into a base opcode + offset */
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ObjDesc->Reference.Opcode = AML_ARG_OP;
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ObjDesc->Reference.Offset = Opcode - AML_ARG_OP;
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break;
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default: /* Constants, Literals, etc.. */
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if (Op->Opcode == AML_INT_NAMEPATH_OP)
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{
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/* Node was saved in Op */
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ObjDesc->Reference.Node = Op->Node;
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}
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ObjDesc->Reference.Opcode = Opcode;
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break;
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}
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unimplemented data type: %x\n",
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ObjDesc->Common.Type));
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break;
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}
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return (AE_OK);
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}
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/*****************************************************************************
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*
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* FUNCTION: AcpiDsBuildInternalSimpleObj
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*
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* PARAMETERS: Op - Parser object to be translated
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* ObjDescPtr - Where the ACPI internal object is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Translate a parser Op object to the equivalent namespace object
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* Simple objects are any objects other than a package object!
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*
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****************************************************************************/
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static ACPI_STATUS
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AcpiDsBuildInternalSimpleObj (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT *Op,
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ACPI_OPERAND_OBJECT **ObjDescPtr)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_OBJECT_TYPE8 Type;
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ACPI_STATUS Status;
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UINT32 Length;
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char *Name;
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FUNCTION_TRACE ("DsBuildInternalSimpleObj");
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if (Op->Opcode == AML_INT_NAMEPATH_OP)
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{
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/*
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* This is an object reference. If The name was
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* previously looked up in the NS, it is stored in this op.
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* Otherwise, go ahead and look it up now
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*/
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if (!Op->Node)
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{
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Status = AcpiNsLookup (WalkState->ScopeInfo,
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Op->Value.String, ACPI_TYPE_ANY,
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IMODE_EXECUTE,
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NS_SEARCH_PARENT | NS_DONT_OPEN_SCOPE,
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NULL,
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(ACPI_NAMESPACE_NODE **)&(Op->Node));
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|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (Status == AE_NOT_FOUND)
|
|
{
|
|
Name = NULL;
|
|
AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Value.String, &Length, &Name);
|
|
|
|
if (Name)
|
|
{
|
|
REPORT_WARNING (("Reference %s at AML %X not found\n",
|
|
Name, Op->AmlOffset));
|
|
ACPI_MEM_FREE (Name);
|
|
}
|
|
|
|
else
|
|
{
|
|
REPORT_WARNING (("Reference %s at AML %X not found\n",
|
|
Op->Value.String, Op->AmlOffset));
|
|
}
|
|
|
|
*ObjDescPtr = NULL;
|
|
}
|
|
|
|
else
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The reference will be a Reference
|
|
* TBD: [Restructure] unless we really need a separate
|
|
* type of INTERNAL_TYPE_REFERENCE change
|
|
* AcpiDsMapOpcodeToDataType to handle this case
|
|
*/
|
|
Type = INTERNAL_TYPE_REFERENCE;
|
|
}
|
|
else
|
|
{
|
|
Type = AcpiDsMapOpcodeToDataType (Op->Opcode, NULL);
|
|
}
|
|
|
|
|
|
/* Create and init the internal ACPI object */
|
|
|
|
ObjDesc = AcpiUtCreateInternalObject (Type);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Status = AcpiDsInitObjectFromOp (WalkState, Op, Op->Opcode, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
*ObjDescPtr = ObjDesc;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsBuildInternalPackageObj
|
|
*
|
|
* PARAMETERS: Op - Parser object to be translated
|
|
* ObjDescPtr - Where the ACPI internal object is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Translate a parser Op package object to the equivalent
|
|
* namespace object
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsBuildInternalPackageObj (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op,
|
|
ACPI_OPERAND_OBJECT **ObjDescPtr)
|
|
{
|
|
ACPI_PARSE_OBJECT *Arg;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
FUNCTION_TRACE ("DsBuildInternalPackageObj");
|
|
|
|
|
|
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
|
|
*ObjDescPtr = ObjDesc;
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
if (Op->Opcode == AML_VAR_PACKAGE_OP)
|
|
{
|
|
/*
|
|
* Variable length package parameters are evaluated JIT
|
|
*/
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* The first argument must be the package length */
|
|
|
|
Arg = Op->Value.Arg;
|
|
ObjDesc->Package.Count = Arg->Value.Integer32;
|
|
|
|
/*
|
|
* Allocate the array of pointers (ptrs to the
|
|
* individual objects) Add an extra pointer slot so
|
|
* that the list is always null terminated.
|
|
*/
|
|
ObjDesc->Package.Elements = ACPI_MEM_CALLOCATE (
|
|
(ObjDesc->Package.Count + 1) * sizeof (void *));
|
|
|
|
if (!ObjDesc->Package.Elements)
|
|
{
|
|
AcpiUtDeleteObjectDesc (ObjDesc);
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
ObjDesc->Package.NextElement = ObjDesc->Package.Elements;
|
|
|
|
/*
|
|
* Now init the elements of the package
|
|
*/
|
|
Arg = Arg->Next;
|
|
while (Arg)
|
|
{
|
|
if (Arg->Opcode == AML_PACKAGE_OP)
|
|
{
|
|
Status = AcpiDsBuildInternalPackageObj (WalkState, Arg,
|
|
ObjDesc->Package.NextElement);
|
|
}
|
|
|
|
else
|
|
{
|
|
Status = AcpiDsBuildInternalSimpleObj (WalkState, Arg,
|
|
ObjDesc->Package.NextElement);
|
|
}
|
|
|
|
ObjDesc->Package.NextElement++;
|
|
Arg = Arg->Next;
|
|
}
|
|
|
|
ObjDesc->Package.Flags |= AOPOBJ_DATA_VALID;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsBuildInternalObject
|
|
*
|
|
* PARAMETERS: Op - Parser object to be translated
|
|
* ObjDescPtr - Where the ACPI internal object is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Translate a parser Op object to the equivalent namespace
|
|
* object
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsBuildInternalObject (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op,
|
|
ACPI_OPERAND_OBJECT **ObjDescPtr)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
switch (Op->Opcode)
|
|
{
|
|
case AML_PACKAGE_OP:
|
|
case AML_VAR_PACKAGE_OP:
|
|
|
|
Status = AcpiDsBuildInternalPackageObj (WalkState, Op, ObjDescPtr);
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
Status = AcpiDsBuildInternalSimpleObj (WalkState, Op, ObjDescPtr);
|
|
break;
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsCreateNode
|
|
*
|
|
* PARAMETERS: Op - Parser object to be translated
|
|
* ObjDescPtr - Where the ACPI internal object is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsCreateNode (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
|
|
|
|
FUNCTION_TRACE_PTR ("DsCreateNode", Op);
|
|
|
|
|
|
if (!Op->Value.Arg)
|
|
{
|
|
/* No arguments, there is nothing to do */
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Build an internal object for the argument(s) */
|
|
|
|
Status = AcpiDsBuildInternalObject (WalkState, Op->Value.Arg, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Re-type the object according to it's argument */
|
|
|
|
Node->Type = ObjDesc->Common.Type;
|
|
|
|
/* Init obj */
|
|
|
|
Status = AcpiNsAttachObject (Node, ObjDesc, (UINT8) Node->Type);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
|
|
|
|
Cleanup:
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|