mirror of https://github.com/F-Stack/f-stack.git
738 lines
26 KiB
C
738 lines
26 KiB
C
/******************************************************************************
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*
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* Module Name: nsrepair - Repair for objects returned by predefined methods
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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 - 2020, 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
|
|
* 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
|
|
* 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
|
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* 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
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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
|
|
* 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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*
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* Alternatively, you may choose to be licensed under the terms of the
|
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* following license:
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Alternatively, you may choose to be licensed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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*****************************************************************************/
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <contrib/dev/acpica/include/acnamesp.h>
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#include <contrib/dev/acpica/include/acinterp.h>
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#include <contrib/dev/acpica/include/acpredef.h>
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#include <contrib/dev/acpica/include/amlresrc.h>
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME ("nsrepair")
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/*******************************************************************************
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*
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* This module attempts to repair or convert objects returned by the
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* predefined methods to an object type that is expected, as per the ACPI
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* specification. The need for this code is dictated by the many machines that
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* return incorrect types for the standard predefined methods. Performing these
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* conversions here, in one place, eliminates the need for individual ACPI
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* device drivers to do the same. Note: Most of these conversions are different
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* than the internal object conversion routines used for implicit object
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* conversion.
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*
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* The following conversions can be performed as necessary:
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*
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* Integer -> String
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* Integer -> Buffer
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* String -> Integer
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* String -> Buffer
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* Buffer -> Integer
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* Buffer -> String
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* Buffer -> Package of Integers
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* Package -> Package of one Package
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*
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* Additional conversions that are available:
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* Convert a null return or zero return value to an EndTag descriptor
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* Convert an ASCII string to a Unicode buffer
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*
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* An incorrect standalone object is wrapped with required outer package
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*
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* Additional possible repairs:
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* Required package elements that are NULL replaced by Integer/String/Buffer
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*
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******************************************************************************/
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/* Local prototypes */
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static const ACPI_SIMPLE_REPAIR_INFO *
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AcpiNsMatchSimpleRepair (
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ACPI_NAMESPACE_NODE *Node,
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UINT32 ReturnBtype,
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UINT32 PackageIndex);
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/*
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* Special but simple repairs for some names.
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*
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* 2nd argument: Unexpected types that can be repaired
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*/
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static const ACPI_SIMPLE_REPAIR_INFO AcpiObjectRepairInfo[] =
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{
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/* Resource descriptor conversions */
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{ "_CRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE,
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ACPI_NOT_PACKAGE_ELEMENT,
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AcpiNsConvertToResource },
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{ "_DMA", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE,
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ACPI_NOT_PACKAGE_ELEMENT,
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AcpiNsConvertToResource },
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{ "_PRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE,
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ACPI_NOT_PACKAGE_ELEMENT,
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AcpiNsConvertToResource },
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/* Object reference conversions */
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{ "_DEP", ACPI_RTYPE_STRING, ACPI_ALL_PACKAGE_ELEMENTS,
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AcpiNsConvertToReference },
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/* Unicode conversions */
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{ "_MLS", ACPI_RTYPE_STRING, 1,
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AcpiNsConvertToUnicode },
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{ "_STR", ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER,
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ACPI_NOT_PACKAGE_ELEMENT,
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AcpiNsConvertToUnicode },
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{ {0,0,0,0}, 0, 0, NULL } /* Table terminator */
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};
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsSimpleRepair
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*
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* PARAMETERS: Info - Method execution information block
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* ExpectedBtypes - Object types expected
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* PackageIndex - Index of object within parent package (if
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* applicable - ACPI_NOT_PACKAGE_ELEMENT
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* otherwise)
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* ReturnObjectPtr - Pointer to the object returned from the
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* evaluation of a method or object
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*
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* RETURN: Status. AE_OK if repair was successful.
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*
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* DESCRIPTION: Attempt to repair/convert a return object of a type that was
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* not expected.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsSimpleRepair (
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ACPI_EVALUATE_INFO *Info,
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UINT32 ExpectedBtypes,
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UINT32 PackageIndex,
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ACPI_OPERAND_OBJECT **ReturnObjectPtr)
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{
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ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
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ACPI_OPERAND_OBJECT *NewObject = NULL;
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ACPI_STATUS Status;
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const ACPI_SIMPLE_REPAIR_INFO *Predefined;
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|
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ACPI_FUNCTION_NAME (NsSimpleRepair);
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|
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/*
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* Special repairs for certain names that are in the repair table.
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* Check if this name is in the list of repairable names.
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*/
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Predefined = AcpiNsMatchSimpleRepair (Info->Node,
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Info->ReturnBtype, PackageIndex);
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if (Predefined)
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{
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if (!ReturnObject)
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{
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
|
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ACPI_WARN_ALWAYS, "Missing expected return value"));
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}
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Status = Predefined->ObjectConverter (Info->Node, ReturnObject,
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&NewObject);
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if (ACPI_FAILURE (Status))
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{
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/* A fatal error occurred during a conversion */
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|
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ACPI_EXCEPTION ((AE_INFO, Status,
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"During return object analysis"));
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return (Status);
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}
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if (NewObject)
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{
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goto ObjectRepaired;
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}
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}
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|
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/*
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* Do not perform simple object repair unless the return type is not
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* expected.
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*/
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if (Info->ReturnBtype & ExpectedBtypes)
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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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* At this point, we know that the type of the returned object was not
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* one of the expected types for this predefined name. Attempt to
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* repair the object by converting it to one of the expected object
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* types for this predefined name.
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*/
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|
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/*
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* If there is no return value, check if we require a return value for
|
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* this predefined name. Either one return value is expected, or none,
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* for both methods and other objects.
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*
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* Try to fix if there was no return object. Warning if failed to fix.
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*/
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if (!ReturnObject)
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{
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if (ExpectedBtypes && (!(ExpectedBtypes & ACPI_RTYPE_NONE)))
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{
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if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT)
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{
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
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ACPI_WARN_ALWAYS, "Found unexpected NULL package element"));
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Status = AcpiNsRepairNullElement (Info, ExpectedBtypes,
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PackageIndex, ReturnObjectPtr);
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if (ACPI_SUCCESS (Status))
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{
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return (AE_OK); /* Repair was successful */
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}
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}
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else
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{
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
|
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ACPI_WARN_ALWAYS, "Missing expected return value"));
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}
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return (AE_AML_NO_RETURN_VALUE);
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}
|
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}
|
|
|
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if (ExpectedBtypes & ACPI_RTYPE_INTEGER)
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{
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Status = AcpiNsConvertToInteger (ReturnObject, &NewObject);
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if (ACPI_SUCCESS (Status))
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{
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goto ObjectRepaired;
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}
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}
|
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if (ExpectedBtypes & ACPI_RTYPE_STRING)
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{
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Status = AcpiNsConvertToString (ReturnObject, &NewObject);
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if (ACPI_SUCCESS (Status))
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{
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goto ObjectRepaired;
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}
|
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}
|
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if (ExpectedBtypes & ACPI_RTYPE_BUFFER)
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{
|
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Status = AcpiNsConvertToBuffer (ReturnObject, &NewObject);
|
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if (ACPI_SUCCESS (Status))
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{
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goto ObjectRepaired;
|
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}
|
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}
|
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if (ExpectedBtypes & ACPI_RTYPE_PACKAGE)
|
|
{
|
|
/*
|
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* A package is expected. We will wrap the existing object with a
|
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* new package object. It is often the case that if a variable-length
|
|
* package is required, but there is only a single object needed, the
|
|
* BIOS will return that object instead of wrapping it with a Package
|
|
* object. Note: after the wrapping, the package will be validated
|
|
* for correct contents (expected object type or types).
|
|
*/
|
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Status = AcpiNsWrapWithPackage (Info, ReturnObject, &NewObject);
|
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if (ACPI_SUCCESS (Status))
|
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{
|
|
/*
|
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* The original object just had its reference count
|
|
* incremented for being inserted into the new package.
|
|
*/
|
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*ReturnObjectPtr = NewObject; /* New Package object */
|
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Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
|
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return (AE_OK);
|
|
}
|
|
}
|
|
|
|
/* We cannot repair this object */
|
|
|
|
return (AE_AML_OPERAND_TYPE);
|
|
|
|
|
|
ObjectRepaired:
|
|
|
|
/* Object was successfully repaired */
|
|
|
|
if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT)
|
|
{
|
|
/* Update reference count of new object */
|
|
|
|
if (!(Info->ReturnFlags & ACPI_OBJECT_WRAPPED))
|
|
{
|
|
NewObject->Common.ReferenceCount =
|
|
ReturnObject->Common.ReferenceCount;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
|
|
"%s: Converted %s to expected %s at Package index %u\n",
|
|
Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject),
|
|
AcpiUtGetObjectTypeName (NewObject), PackageIndex));
|
|
}
|
|
else
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
|
|
"%s: Converted %s to expected %s\n",
|
|
Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject),
|
|
AcpiUtGetObjectTypeName (NewObject)));
|
|
}
|
|
|
|
/* Delete old object, install the new return object */
|
|
|
|
AcpiUtRemoveReference (ReturnObject);
|
|
*ReturnObjectPtr = NewObject;
|
|
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsMatchSimpleRepair
|
|
*
|
|
* PARAMETERS: Node - Namespace node for the method/object
|
|
* ReturnBtype - Object type that was returned
|
|
* PackageIndex - Index of object within parent package (if
|
|
* applicable - ACPI_NOT_PACKAGE_ELEMENT
|
|
* otherwise)
|
|
*
|
|
* RETURN: Pointer to entry in repair table. NULL indicates not found.
|
|
*
|
|
* DESCRIPTION: Check an object name against the repairable object list.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static const ACPI_SIMPLE_REPAIR_INFO *
|
|
AcpiNsMatchSimpleRepair (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
UINT32 ReturnBtype,
|
|
UINT32 PackageIndex)
|
|
{
|
|
const ACPI_SIMPLE_REPAIR_INFO *ThisName;
|
|
|
|
|
|
/* Search info table for a repairable predefined method/object name */
|
|
|
|
ThisName = AcpiObjectRepairInfo;
|
|
while (ThisName->ObjectConverter)
|
|
{
|
|
if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, ThisName->Name))
|
|
{
|
|
/* Check if we can actually repair this name/type combination */
|
|
|
|
if ((ReturnBtype & ThisName->UnexpectedBtypes) &&
|
|
(ThisName->PackageIndex == ACPI_ALL_PACKAGE_ELEMENTS ||
|
|
PackageIndex == ThisName->PackageIndex))
|
|
{
|
|
return (ThisName);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
ThisName++;
|
|
}
|
|
|
|
return (NULL); /* Name was not found in the repair table */
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsRepairNullElement
|
|
*
|
|
* PARAMETERS: Info - Method execution information block
|
|
* ExpectedBtypes - Object types expected
|
|
* PackageIndex - Index of object within parent package (if
|
|
* applicable - ACPI_NOT_PACKAGE_ELEMENT
|
|
* otherwise)
|
|
* ReturnObjectPtr - Pointer to the object returned from the
|
|
* evaluation of a method or object
|
|
*
|
|
* RETURN: Status. AE_OK if repair was successful.
|
|
*
|
|
* DESCRIPTION: Attempt to repair a NULL element of a returned Package object.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsRepairNullElement (
|
|
ACPI_EVALUATE_INFO *Info,
|
|
UINT32 ExpectedBtypes,
|
|
UINT32 PackageIndex,
|
|
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
|
|
ACPI_OPERAND_OBJECT *NewObject;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (NsRepairNullElement);
|
|
|
|
|
|
/* No repair needed if return object is non-NULL */
|
|
|
|
if (ReturnObject)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Attempt to repair a NULL element of a Package object. This applies to
|
|
* predefined names that return a fixed-length package and each element
|
|
* is required. It does not apply to variable-length packages where NULL
|
|
* elements are allowed, especially at the end of the package.
|
|
*/
|
|
if (ExpectedBtypes & ACPI_RTYPE_INTEGER)
|
|
{
|
|
/* Need an Integer - create a zero-value integer */
|
|
|
|
NewObject = AcpiUtCreateIntegerObject ((UINT64) 0);
|
|
}
|
|
else if (ExpectedBtypes & ACPI_RTYPE_STRING)
|
|
{
|
|
/* Need a String - create a NULL string */
|
|
|
|
NewObject = AcpiUtCreateStringObject (0);
|
|
}
|
|
else if (ExpectedBtypes & ACPI_RTYPE_BUFFER)
|
|
{
|
|
/* Need a Buffer - create a zero-length buffer */
|
|
|
|
NewObject = AcpiUtCreateBufferObject (0);
|
|
}
|
|
else
|
|
{
|
|
/* Error for all other expected types */
|
|
|
|
return (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
if (!NewObject)
|
|
{
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Set the reference count according to the parent Package object */
|
|
|
|
NewObject->Common.ReferenceCount =
|
|
Info->ParentPackage->Common.ReferenceCount;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
|
|
"%s: Converted NULL package element to expected %s at index %u\n",
|
|
Info->FullPathname, AcpiUtGetObjectTypeName (NewObject),
|
|
PackageIndex));
|
|
|
|
*ReturnObjectPtr = NewObject;
|
|
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsRemoveNullElements
|
|
*
|
|
* PARAMETERS: Info - Method execution information block
|
|
* PackageType - An AcpiReturnPackageTypes value
|
|
* ObjDesc - A Package object
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Remove all NULL package elements from packages that contain
|
|
* a variable number of subpackages. For these types of
|
|
* packages, NULL elements can be safely removed.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void
|
|
AcpiNsRemoveNullElements (
|
|
ACPI_EVALUATE_INFO *Info,
|
|
UINT8 PackageType,
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_OPERAND_OBJECT **Source;
|
|
ACPI_OPERAND_OBJECT **Dest;
|
|
UINT32 Count;
|
|
UINT32 NewCount;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (NsRemoveNullElements);
|
|
|
|
|
|
/*
|
|
* We can safely remove all NULL elements from these package types:
|
|
* PTYPE1_VAR packages contain a variable number of simple data types.
|
|
* PTYPE2 packages contain a variable number of subpackages.
|
|
*/
|
|
switch (PackageType)
|
|
{
|
|
case ACPI_PTYPE1_VAR:
|
|
case ACPI_PTYPE2:
|
|
case ACPI_PTYPE2_COUNT:
|
|
case ACPI_PTYPE2_PKG_COUNT:
|
|
case ACPI_PTYPE2_FIXED:
|
|
case ACPI_PTYPE2_MIN:
|
|
case ACPI_PTYPE2_REV_FIXED:
|
|
case ACPI_PTYPE2_FIX_VAR:
|
|
break;
|
|
|
|
default:
|
|
case ACPI_PTYPE2_VAR_VAR:
|
|
case ACPI_PTYPE1_FIXED:
|
|
case ACPI_PTYPE1_OPTION:
|
|
return;
|
|
}
|
|
|
|
Count = ObjDesc->Package.Count;
|
|
NewCount = Count;
|
|
|
|
Source = ObjDesc->Package.Elements;
|
|
Dest = Source;
|
|
|
|
/* Examine all elements of the package object, remove nulls */
|
|
|
|
for (i = 0; i < Count; i++)
|
|
{
|
|
if (!*Source)
|
|
{
|
|
NewCount--;
|
|
}
|
|
else
|
|
{
|
|
*Dest = *Source;
|
|
Dest++;
|
|
}
|
|
|
|
Source++;
|
|
}
|
|
|
|
/* Update parent package if any null elements were removed */
|
|
|
|
if (NewCount < Count)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
|
|
"%s: Found and removed %u NULL elements\n",
|
|
Info->FullPathname, (Count - NewCount)));
|
|
|
|
/* NULL terminate list and update the package count */
|
|
|
|
*Dest = NULL;
|
|
ObjDesc->Package.Count = NewCount;
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsWrapWithPackage
|
|
*
|
|
* PARAMETERS: Info - Method execution information block
|
|
* OriginalObject - Pointer to the object to repair.
|
|
* ObjDescPtr - The new package object is returned here
|
|
*
|
|
* RETURN: Status, new object in *ObjDescPtr
|
|
*
|
|
* DESCRIPTION: Repair a common problem with objects that are defined to
|
|
* return a variable-length Package of sub-objects. If there is
|
|
* only one sub-object, some BIOS code mistakenly simply declares
|
|
* the single object instead of a Package with one sub-object.
|
|
* This function attempts to repair this error by wrapping a
|
|
* Package object around the original object, creating the
|
|
* correct and expected Package with one sub-object.
|
|
*
|
|
* Names that can be repaired in this manner include:
|
|
* _ALR, _CSD, _HPX, _MLS, _PLD, _PRT, _PSS, _TRT, _TSS,
|
|
* _BCL, _DOD, _FIX, _Sx
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsWrapWithPackage (
|
|
ACPI_EVALUATE_INFO *Info,
|
|
ACPI_OPERAND_OBJECT *OriginalObject,
|
|
ACPI_OPERAND_OBJECT **ObjDescPtr)
|
|
{
|
|
ACPI_OPERAND_OBJECT *PkgObjDesc;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (NsWrapWithPackage);
|
|
|
|
|
|
/*
|
|
* Create the new outer package and populate it. The new
|
|
* package will have a single element, the lone sub-object.
|
|
*/
|
|
PkgObjDesc = AcpiUtCreatePackageObject (1);
|
|
if (!PkgObjDesc)
|
|
{
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
PkgObjDesc->Package.Elements[0] = OriginalObject;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
|
|
"%s: Wrapped %s with expected Package object\n",
|
|
Info->FullPathname, AcpiUtGetObjectTypeName (OriginalObject)));
|
|
|
|
/* Return the new object in the object pointer */
|
|
|
|
*ObjDescPtr = PkgObjDesc;
|
|
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
|
|
return (AE_OK);
|
|
}
|