1205 lines
39 KiB
C
1205 lines
39 KiB
C
/******************************************************************************
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*
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* Module Name: aslxref - Namespace cross-reference
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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 - 2018, 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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*
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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 "aslcompiler.h"
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#include "aslcompiler.y.h"
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#include "acparser.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "acdispat.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslxref")
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/* Local prototypes */
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static ACPI_STATUS
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XfNamespaceLocateBegin (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static ACPI_STATUS
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XfNamespaceLocateEnd (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static ACPI_PARSE_OBJECT *
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XfGetParentMethod (
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ACPI_PARSE_OBJECT *Op);
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static BOOLEAN
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XfObjectExists (
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char *Name);
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static ACPI_STATUS
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XfCompareOneNamespaceObject (
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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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static void
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XfCheckFieldRange (
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ACPI_PARSE_OBJECT *Op,
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UINT32 RegionBitLength,
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UINT32 FieldBitOffset,
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UINT32 FieldBitLength,
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UINT32 AccessBitWidth);
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/*******************************************************************************
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*
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* FUNCTION: XfCrossReferenceNamespace
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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: Perform a cross reference check of the parse tree against the
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* namespace. Every named referenced within the parse tree
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* should be get resolved with a namespace lookup. If not, the
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* original reference in the ASL code is invalid -- i.e., refers
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* to a non-existent object.
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*
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* NOTE: The ASL "External" operator causes the name to be inserted into the
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* namespace so that references to the external name will be resolved
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* correctly here.
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*
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******************************************************************************/
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ACPI_STATUS
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XfCrossReferenceNamespace (
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void)
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{
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ACPI_WALK_STATE *WalkState;
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/*
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* Create a new walk state for use when looking up names
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* within the namespace (Passed as context to the callbacks)
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*/
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WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
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if (!WalkState)
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{
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return (AE_NO_MEMORY);
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}
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/* Walk the entire parse tree */
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TrWalkParseTree (Gbl_ParseTreeRoot, ASL_WALK_VISIT_TWICE,
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XfNamespaceLocateBegin, XfNamespaceLocateEnd, WalkState);
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ACPI_FREE (WalkState);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: XfObjectExists
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*
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* PARAMETERS: Name - 4 char ACPI name
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*
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* RETURN: TRUE if name exists in namespace
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*
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* DESCRIPTION: Walk the namespace to find an object
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*
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******************************************************************************/
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static BOOLEAN
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XfObjectExists (
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char *Name)
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{
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ACPI_STATUS Status;
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/* Walk entire namespace from the supplied root */
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Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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ACPI_UINT32_MAX, FALSE, XfCompareOneNamespaceObject, NULL,
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Name, NULL);
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if (Status == AE_CTRL_TRUE)
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{
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/* At least one instance of the name was found */
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return (TRUE);
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}
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: XfCompareOneNamespaceObject
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*
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* PARAMETERS: ACPI_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Compare name of one object.
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*
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******************************************************************************/
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static ACPI_STATUS
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XfCompareOneNamespaceObject (
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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_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
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/* Simply check the name */
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if (*((UINT32 *) (Context)) == Node->Name.Integer)
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{
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/* Abort walk if we found one instance */
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return (AE_CTRL_TRUE);
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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: XfCheckFieldRange
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*
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* PARAMETERS: RegionBitLength - Length of entire parent region
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* FieldBitOffset - Start of the field unit (within region)
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* FieldBitLength - Entire length of field unit
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* AccessBitWidth - Access width of the field unit
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*
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* RETURN: None
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*
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* DESCRIPTION: Check one field unit to make sure it fits in the parent
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* op region.
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*
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* Note: AccessBitWidth must be either 8,16,32, or 64
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*
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******************************************************************************/
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static void
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XfCheckFieldRange (
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ACPI_PARSE_OBJECT *Op,
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UINT32 RegionBitLength,
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UINT32 FieldBitOffset,
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UINT32 FieldBitLength,
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UINT32 AccessBitWidth)
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{
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UINT32 FieldEndBitOffset;
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/*
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* Check each field unit against the region size. The entire
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* field unit (start offset plus length) must fit within the
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* region.
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*/
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FieldEndBitOffset = FieldBitOffset + FieldBitLength;
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if (FieldEndBitOffset > RegionBitLength)
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{
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/* Field definition itself is beyond the end-of-region */
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AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_OFFSET, Op, NULL);
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return;
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}
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/*
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* Now check that the field plus AccessWidth doesn't go beyond
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* the end-of-region. Assumes AccessBitWidth is a power of 2
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*/
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FieldEndBitOffset = ACPI_ROUND_UP (FieldEndBitOffset, AccessBitWidth);
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if (FieldEndBitOffset > RegionBitLength)
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{
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/* Field definition combined with the access is beyond EOR */
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AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_ACCESS_WIDTH, Op, NULL);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: XfGetParentMethod
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*
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* PARAMETERS: Op - Parse Op to be checked
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*
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* RETURN: Control method Op if found. NULL otherwise
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*
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* DESCRIPTION: Find the control method parent of a parse op. Returns NULL if
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* the input Op is not within a control method.
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*
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******************************************************************************/
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static ACPI_PARSE_OBJECT *
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XfGetParentMethod (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_PARSE_OBJECT *NextOp;
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NextOp = Op->Asl.Parent;
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while (NextOp)
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{
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if (NextOp->Asl.AmlOpcode == AML_METHOD_OP)
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{
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return (NextOp);
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}
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NextOp = NextOp->Asl.Parent;
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}
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return (NULL); /* No parent method found */
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}
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/*******************************************************************************
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*
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* FUNCTION: XfNamespaceLocateBegin
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Descending callback used during cross-reference. For named
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* object references, attempt to locate the name in the
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* namespace.
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*
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* NOTE: ASL references to named fields within resource descriptors are
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* resolved to integer values here. Therefore, this step is an
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* important part of the code generation. We don't know that the
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* name refers to a resource descriptor until now.
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*
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******************************************************************************/
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static ACPI_STATUS
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XfNamespaceLocateBegin (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
|
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ACPI_NAMESPACE_NODE *Node;
|
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ACPI_STATUS Status;
|
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ACPI_OBJECT_TYPE ObjectType;
|
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char *Path;
|
|
UINT8 PassedArgs;
|
|
ACPI_PARSE_OBJECT *NextOp;
|
|
ACPI_PARSE_OBJECT *OwningOp;
|
|
ACPI_PARSE_OBJECT *SpaceIdOp;
|
|
UINT32 MinimumLength;
|
|
UINT32 Offset;
|
|
UINT32 FieldBitLength;
|
|
UINT32 TagBitLength;
|
|
UINT8 Message = 0;
|
|
const ACPI_OPCODE_INFO *OpInfo;
|
|
UINT32 Flags;
|
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ASL_METHOD_LOCAL *MethodLocals = NULL;
|
|
ASL_METHOD_LOCAL *MethodArgs = NULL;
|
|
int RegisterNumber;
|
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UINT32 i;
|
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|
|
|
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ACPI_FUNCTION_TRACE_PTR (XfNamespaceLocateBegin, Op);
|
|
|
|
|
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if ((Op->Asl.AmlOpcode == AML_METHOD_OP) && Op->Asl.Node)
|
|
{
|
|
Node = Op->Asl.Node;
|
|
|
|
/* Support for method LocalX/ArgX analysis */
|
|
|
|
if (!Node->MethodLocals)
|
|
{
|
|
/* Create local/arg info blocks */
|
|
|
|
MethodLocals = UtLocalCalloc (
|
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sizeof (ASL_METHOD_LOCAL) * ACPI_METHOD_NUM_LOCALS);
|
|
Node->MethodLocals = MethodLocals;
|
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|
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MethodArgs = UtLocalCalloc (
|
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sizeof (ASL_METHOD_LOCAL) * ACPI_METHOD_NUM_ARGS);
|
|
Node->MethodArgs = MethodArgs;
|
|
|
|
/*
|
|
* Get the method argument count
|
|
* First, get the name node
|
|
*/
|
|
NextOp = Op->Asl.Child;
|
|
|
|
/* Get the NumArguments node */
|
|
|
|
NextOp = NextOp->Asl.Next;
|
|
Node->ArgCount = (UINT8)
|
|
(((UINT8) NextOp->Asl.Value.Integer) & 0x07);
|
|
|
|
/* We will track all posible ArgXs */
|
|
|
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for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++)
|
|
{
|
|
if (i < Node->ArgCount)
|
|
{
|
|
/* Real Args are always "initialized" */
|
|
|
|
MethodArgs[i].Flags = ASL_ARG_INITIALIZED;
|
|
}
|
|
else
|
|
{
|
|
/* Other ArgXs can be used as locals */
|
|
|
|
MethodArgs[i].Flags = ASL_ARG_IS_LOCAL;
|
|
}
|
|
|
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MethodArgs[i].Op = Op;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If this node is the actual declaration of a name
|
|
* [such as the XXXX name in "Method (XXXX)"],
|
|
* we are not interested in it here. We only care about names that are
|
|
* references to other objects within the namespace and the parent objects
|
|
* of name declarations
|
|
*/
|
|
if (Op->Asl.CompileFlags & OP_IS_NAME_DECLARATION)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
|
|
|
|
/* Check method LocalX variables */
|
|
|
|
if (OpInfo->Type == AML_TYPE_LOCAL_VARIABLE)
|
|
{
|
|
/* Find parent method Op */
|
|
|
|
NextOp = XfGetParentMethod (Op);
|
|
if (!NextOp)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Get method node */
|
|
|
|
Node = NextOp->Asl.Node;
|
|
|
|
RegisterNumber = Op->Asl.AmlOpcode & 0x0007; /* 0x60 through 0x67 */
|
|
MethodLocals = Node->MethodLocals;
|
|
|
|
if (Op->Asl.CompileFlags & OP_IS_TARGET)
|
|
{
|
|
/* Local is being initialized */
|
|
|
|
MethodLocals[RegisterNumber].Flags |= ASL_LOCAL_INITIALIZED;
|
|
MethodLocals[RegisterNumber].Op = Op;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Mark this Local as referenced */
|
|
|
|
MethodLocals[RegisterNumber].Flags |= ASL_LOCAL_REFERENCED;
|
|
MethodLocals[RegisterNumber].Op = Op;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Check method ArgX variables */
|
|
|
|
if (OpInfo->Type == AML_TYPE_METHOD_ARGUMENT)
|
|
{
|
|
/* Find parent method Op */
|
|
|
|
NextOp = XfGetParentMethod (Op);
|
|
if (!NextOp)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Get method node */
|
|
|
|
Node = NextOp->Asl.Node;
|
|
|
|
/* Get Arg # */
|
|
|
|
RegisterNumber = Op->Asl.AmlOpcode - AML_ARG0; /* 0x68 through 0x6F */
|
|
MethodArgs = Node->MethodArgs;
|
|
|
|
/* Mark this Arg as referenced */
|
|
|
|
MethodArgs[RegisterNumber].Flags |= ASL_ARG_REFERENCED;
|
|
MethodArgs[RegisterNumber].Op = Op;
|
|
|
|
if (Op->Asl.CompileFlags & OP_IS_TARGET)
|
|
{
|
|
/* Arg is being initialized */
|
|
|
|
MethodArgs[RegisterNumber].Flags |= ASL_ARG_INITIALIZED;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* After method ArgX and LocalX, we are only interested in opcodes
|
|
* that have an associated name
|
|
*/
|
|
if ((!(OpInfo->Flags & AML_NAMED)) &&
|
|
(!(OpInfo->Flags & AML_CREATE)) &&
|
|
(Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) &&
|
|
(Op->Asl.ParseOpcode != PARSEOP_NAMESEG) &&
|
|
(Op->Asl.ParseOpcode != PARSEOP_METHODCALL) &&
|
|
(Op->Asl.ParseOpcode != PARSEOP_EXTERNAL))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* One special case: CondRefOf operator - we don't care if the name exists
|
|
* or not at this point, just ignore it, the point of the operator is to
|
|
* determine if the name exists at runtime.
|
|
*/
|
|
if ((Op->Asl.Parent) &&
|
|
(Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* We must enable the "search-to-root" for single NameSegs, but
|
|
* we have to be very careful about opening up scopes
|
|
*/
|
|
Flags = ACPI_NS_SEARCH_PARENT;
|
|
if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_METHODCALL) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_EXTERNAL))
|
|
{
|
|
/*
|
|
* These are name references, do not push the scope stack
|
|
* for them.
|
|
*/
|
|
Flags |= ACPI_NS_DONT_OPEN_SCOPE;
|
|
}
|
|
|
|
/* Get the NamePath from the appropriate place */
|
|
|
|
if (OpInfo->Flags & AML_NAMED)
|
|
{
|
|
/* For nearly all NAMED operators, the name reference is the first child */
|
|
|
|
Path = Op->Asl.Child->Asl.Value.String;
|
|
if (Op->Asl.AmlOpcode == AML_ALIAS_OP)
|
|
{
|
|
/*
|
|
* ALIAS is the only oddball opcode, the name declaration
|
|
* (alias name) is the second operand
|
|
*/
|
|
Path = Op->Asl.Child->Asl.Next->Asl.Value.String;
|
|
}
|
|
}
|
|
else if (OpInfo->Flags & AML_CREATE)
|
|
{
|
|
/* Name must appear as the last parameter */
|
|
|
|
NextOp = Op->Asl.Child;
|
|
while (!(NextOp->Asl.CompileFlags & OP_IS_NAME_DECLARATION))
|
|
{
|
|
NextOp = NextOp->Asl.Next;
|
|
}
|
|
|
|
Path = NextOp->Asl.Value.String;
|
|
}
|
|
else
|
|
{
|
|
Path = Op->Asl.Value.String;
|
|
}
|
|
|
|
ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"Type=%s\n", AcpiUtGetTypeName (ObjectType)));
|
|
|
|
/*
|
|
* Lookup the name in the namespace. Name must exist at this point, or it
|
|
* is an invalid reference.
|
|
*
|
|
* The namespace is also used as a lookup table for references to resource
|
|
* descriptors and the fields within them.
|
|
*/
|
|
Gbl_NsLookupCount++;
|
|
|
|
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
|
|
ACPI_IMODE_EXECUTE, Flags, WalkState, &Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (Status == AE_NOT_FOUND)
|
|
{
|
|
/*
|
|
* We didn't find the name reference by path -- we can qualify this
|
|
* a little better before we print an error message
|
|
*/
|
|
if (strlen (Path) == ACPI_NAME_SIZE)
|
|
{
|
|
/* A simple, one-segment ACPI name */
|
|
|
|
if (XfObjectExists (Path))
|
|
{
|
|
/*
|
|
* There exists such a name, but we couldn't get to it
|
|
* from this scope
|
|
*/
|
|
AslError (ASL_ERROR, ASL_MSG_NOT_REACHABLE, Op,
|
|
Op->Asl.ExternalName);
|
|
}
|
|
else
|
|
{
|
|
/* The name doesn't exist, period */
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_NOT_EXIST,
|
|
Op, Op->Asl.ExternalName);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Check for a fully qualified path */
|
|
|
|
if (Path[0] == AML_ROOT_PREFIX)
|
|
{
|
|
/* Gave full path, the object does not exist */
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, Op,
|
|
Op->Asl.ExternalName);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* We can't tell whether it doesn't exist or just
|
|
* can't be reached.
|
|
*/
|
|
AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
|
|
Op->Asl.ExternalName);
|
|
}
|
|
}
|
|
|
|
Status = AE_OK;
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Object was found above, check for an illegal forward reference */
|
|
|
|
if (Op->Asl.CompileFlags & OP_NOT_FOUND_DURING_LOAD)
|
|
{
|
|
/*
|
|
* During the load phase, this Op was flagged as a possible
|
|
* illegal forward reference
|
|
*
|
|
* Note: Allow "forward references" from within a method to an
|
|
* object that is not within any method (module-level code)
|
|
*/
|
|
if (!WalkState->ScopeInfo || (UtGetParentMethod (Node) &&
|
|
!UtNodeIsDescendantOf (WalkState->ScopeInfo->Scope.Node,
|
|
UtGetParentMethod (Node))))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_ILLEGAL_FORWARD_REF, Op,
|
|
Op->Asl.ExternalName);
|
|
}
|
|
}
|
|
|
|
/* Check for a reference vs. name declaration */
|
|
|
|
if (!(OpInfo->Flags & AML_NAMED) &&
|
|
!(OpInfo->Flags & AML_CREATE))
|
|
{
|
|
/* This node has been referenced, mark it for reference check */
|
|
|
|
Node->Flags |= ANOBJ_IS_REFERENCED;
|
|
}
|
|
|
|
/* Attempt to optimize the NamePath */
|
|
|
|
OptOptimizeNamePath (Op, OpInfo->Flags, WalkState, Path, Node);
|
|
|
|
/*
|
|
* 1) Dereference an alias (A name reference that is an alias)
|
|
* Aliases are not nested, the alias always points to the final object
|
|
*/
|
|
if ((Op->Asl.ParseOpcode != PARSEOP_ALIAS) &&
|
|
(Node->Type == ACPI_TYPE_LOCAL_ALIAS))
|
|
{
|
|
/* This node points back to the original PARSEOP_ALIAS */
|
|
|
|
NextOp = Node->Op;
|
|
|
|
/* The first child is the alias target op */
|
|
|
|
NextOp = NextOp->Asl.Child;
|
|
|
|
/* That in turn points back to original target alias node */
|
|
|
|
if (NextOp->Asl.Node)
|
|
{
|
|
Node = NextOp->Asl.Node;
|
|
}
|
|
|
|
/* Else - forward reference to alias, will be resolved later */
|
|
}
|
|
|
|
/* 2) Check for a reference to a resource descriptor */
|
|
|
|
if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) ||
|
|
(Node->Type == ACPI_TYPE_LOCAL_RESOURCE))
|
|
{
|
|
/*
|
|
* This was a reference to a field within a resource descriptor.
|
|
* Extract the associated field offset (either a bit or byte
|
|
* offset depending on the field type) and change the named
|
|
* reference into an integer for AML code generation
|
|
*/
|
|
Offset = Node->Value;
|
|
TagBitLength = Node->Length;
|
|
|
|
/*
|
|
* If a field is being created, generate the length (in bits) of
|
|
* the field. Note: Opcodes other than CreateXxxField and Index
|
|
* can come through here. For other opcodes, we just need to
|
|
* convert the resource tag reference to an integer offset.
|
|
*/
|
|
switch (Op->Asl.Parent->Asl.AmlOpcode)
|
|
{
|
|
case AML_CREATE_FIELD_OP: /* Variable "Length" field, in bits */
|
|
/*
|
|
* We know the length operand is an integer constant because
|
|
* we know that it contains a reference to a resource
|
|
* descriptor tag.
|
|
*/
|
|
FieldBitLength = (UINT32) Op->Asl.Next->Asl.Value.Integer;
|
|
break;
|
|
|
|
case AML_CREATE_BIT_FIELD_OP:
|
|
|
|
FieldBitLength = 1;
|
|
break;
|
|
|
|
case AML_CREATE_BYTE_FIELD_OP:
|
|
case AML_INDEX_OP:
|
|
|
|
FieldBitLength = 8;
|
|
break;
|
|
|
|
case AML_CREATE_WORD_FIELD_OP:
|
|
|
|
FieldBitLength = 16;
|
|
break;
|
|
|
|
case AML_CREATE_DWORD_FIELD_OP:
|
|
|
|
FieldBitLength = 32;
|
|
break;
|
|
|
|
case AML_CREATE_QWORD_FIELD_OP:
|
|
|
|
FieldBitLength = 64;
|
|
break;
|
|
|
|
default:
|
|
|
|
FieldBitLength = 0;
|
|
break;
|
|
}
|
|
|
|
/* Check the field length against the length of the resource tag */
|
|
|
|
if (FieldBitLength)
|
|
{
|
|
if (TagBitLength < FieldBitLength)
|
|
{
|
|
Message = ASL_MSG_TAG_SMALLER;
|
|
}
|
|
else if (TagBitLength > FieldBitLength)
|
|
{
|
|
Message = ASL_MSG_TAG_LARGER;
|
|
}
|
|
|
|
if (Message)
|
|
{
|
|
sprintf (MsgBuffer,
|
|
"Size mismatch, Tag: %u bit%s, Field: %u bit%s",
|
|
TagBitLength, (TagBitLength > 1) ? "s" : "",
|
|
FieldBitLength, (FieldBitLength > 1) ? "s" : "");
|
|
|
|
AslError (ASL_WARNING, Message, Op, MsgBuffer);
|
|
}
|
|
}
|
|
|
|
/* Convert the BitOffset to a ByteOffset for certain opcodes */
|
|
|
|
switch (Op->Asl.Parent->Asl.AmlOpcode)
|
|
{
|
|
case AML_CREATE_BYTE_FIELD_OP:
|
|
case AML_CREATE_WORD_FIELD_OP:
|
|
case AML_CREATE_DWORD_FIELD_OP:
|
|
case AML_CREATE_QWORD_FIELD_OP:
|
|
case AML_INDEX_OP:
|
|
|
|
Offset = ACPI_DIV_8 (Offset);
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
/* Now convert this node to an integer whose value is the field offset */
|
|
|
|
Op->Asl.AmlLength = 0;
|
|
Op->Asl.ParseOpcode = PARSEOP_INTEGER;
|
|
Op->Asl.Value.Integer = (UINT64) Offset;
|
|
Op->Asl.CompileFlags |= OP_IS_RESOURCE_FIELD;
|
|
|
|
OpcGenerateAmlOpcode (Op);
|
|
}
|
|
|
|
/* 3) Check for a method invocation */
|
|
|
|
else if ((((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG)) &&
|
|
(Node->Type == ACPI_TYPE_METHOD) &&
|
|
(Op->Asl.Parent) &&
|
|
(Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_METHOD)) ||
|
|
|
|
(Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
|
|
{
|
|
/*
|
|
* A reference to a method within one of these opcodes is not an
|
|
* invocation of the method, it is simply a reference to the method.
|
|
*
|
|
* September 2016: Removed DeRefOf from this list
|
|
*/
|
|
if ((Op->Asl.Parent) &&
|
|
((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_REFOF) ||
|
|
(Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_PACKAGE) ||
|
|
(Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE)||
|
|
(Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_OBJECTTYPE)))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* There are two types of method invocation:
|
|
* 1) Invocation with arguments -- the parser recognizes this
|
|
* as a METHODCALL.
|
|
* 2) Invocation with no arguments --the parser cannot determine that
|
|
* this is a method invocation, therefore we have to figure it out
|
|
* here.
|
|
*/
|
|
if (Node->Type != ACPI_TYPE_METHOD)
|
|
{
|
|
sprintf (MsgBuffer, "%s is a %s",
|
|
Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_NOT_METHOD, Op, MsgBuffer);
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Save the method node in the caller's op */
|
|
|
|
Op->Asl.Node = Node;
|
|
if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* This is a method invocation, with or without arguments.
|
|
* Count the number of arguments, each appears as a child
|
|
* under the parent node
|
|
*/
|
|
Op->Asl.ParseOpcode = PARSEOP_METHODCALL;
|
|
UtSetParseOpName (Op);
|
|
|
|
PassedArgs = 0;
|
|
NextOp = Op->Asl.Child;
|
|
|
|
while (NextOp)
|
|
{
|
|
PassedArgs++;
|
|
NextOp = NextOp->Asl.Next;
|
|
}
|
|
|
|
if (Node->Value != ASL_EXTERNAL_METHOD &&
|
|
Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_EXTERNAL)
|
|
{
|
|
/*
|
|
* Check the parsed arguments with the number expected by the
|
|
* method declaration itself
|
|
*/
|
|
if (PassedArgs != Node->Value)
|
|
{
|
|
sprintf (MsgBuffer, "%s requires %u", Op->Asl.ExternalName,
|
|
Node->Value);
|
|
|
|
if (PassedArgs < Node->Value)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_LO, Op, MsgBuffer);
|
|
}
|
|
else
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_HI, Op, MsgBuffer);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 4) Check for an ASL Field definition */
|
|
|
|
else if ((Op->Asl.Parent) &&
|
|
((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_FIELD) ||
|
|
(Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_BANKFIELD)))
|
|
{
|
|
/*
|
|
* Offset checking for fields. If the parent operation region has a
|
|
* constant length (known at compile time), we can check fields
|
|
* defined in that region against the region length. This will catch
|
|
* fields and field units that cannot possibly fit within the region.
|
|
*
|
|
* Note: Index fields do not directly reference an operation region,
|
|
* thus they are not included in this check.
|
|
*/
|
|
if (Op == Op->Asl.Parent->Asl.Child)
|
|
{
|
|
/*
|
|
* This is the first child of the field node, which is
|
|
* the name of the region. Get the parse node for the
|
|
* region -- which contains the length of the region.
|
|
*/
|
|
OwningOp = Node->Op;
|
|
Op->Asl.Parent->Asl.ExtraValue =
|
|
ACPI_MUL_8 ((UINT32) OwningOp->Asl.Value.Integer);
|
|
|
|
/* Examine the field access width */
|
|
|
|
switch ((UINT8) Op->Asl.Parent->Asl.Value.Integer)
|
|
{
|
|
case AML_FIELD_ACCESS_ANY:
|
|
case AML_FIELD_ACCESS_BYTE:
|
|
case AML_FIELD_ACCESS_BUFFER:
|
|
default:
|
|
|
|
MinimumLength = 1;
|
|
break;
|
|
|
|
case AML_FIELD_ACCESS_WORD:
|
|
|
|
MinimumLength = 2;
|
|
break;
|
|
|
|
case AML_FIELD_ACCESS_DWORD:
|
|
|
|
MinimumLength = 4;
|
|
break;
|
|
|
|
case AML_FIELD_ACCESS_QWORD:
|
|
|
|
MinimumLength = 8;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Is the region at least as big as the access width?
|
|
* Note: DataTableRegions have 0 length
|
|
*/
|
|
if (((UINT32) OwningOp->Asl.Value.Integer) &&
|
|
((UINT32) OwningOp->Asl.Value.Integer < MinimumLength))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_FIELD_ACCESS_WIDTH, Op, NULL);
|
|
}
|
|
|
|
/*
|
|
* Check EC/CMOS/SMBUS fields to make sure that the correct
|
|
* access type is used (BYTE for EC/CMOS, BUFFER for SMBUS)
|
|
*/
|
|
SpaceIdOp = OwningOp->Asl.Child->Asl.Next;
|
|
switch ((UINT32) SpaceIdOp->Asl.Value.Integer)
|
|
{
|
|
case ACPI_ADR_SPACE_EC:
|
|
case ACPI_ADR_SPACE_CMOS:
|
|
case ACPI_ADR_SPACE_GPIO:
|
|
|
|
if ((UINT8) Op->Asl.Parent->Asl.Value.Integer !=
|
|
AML_FIELD_ACCESS_BYTE)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_REGION_BYTE_ACCESS, Op, NULL);
|
|
}
|
|
break;
|
|
|
|
case ACPI_ADR_SPACE_SMBUS:
|
|
case ACPI_ADR_SPACE_IPMI:
|
|
case ACPI_ADR_SPACE_GSBUS:
|
|
|
|
if ((UINT8) Op->Asl.Parent->Asl.Value.Integer !=
|
|
AML_FIELD_ACCESS_BUFFER)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_REGION_BUFFER_ACCESS, Op, NULL);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Nothing to do for other address spaces */
|
|
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* This is one element of the field list. Check to make sure
|
|
* that it does not go beyond the end of the parent operation region.
|
|
*
|
|
* In the code below:
|
|
* Op->Asl.Parent->Asl.ExtraValue - Region Length (bits)
|
|
* Op->Asl.ExtraValue - Field start offset (bits)
|
|
* Op->Asl.Child->Asl.Value.Integer32 - Field length (bits)
|
|
* Op->Asl.Child->Asl.ExtraValue - Field access width (bits)
|
|
*/
|
|
if (Op->Asl.Parent->Asl.ExtraValue && Op->Asl.Child)
|
|
{
|
|
XfCheckFieldRange (Op,
|
|
Op->Asl.Parent->Asl.ExtraValue,
|
|
Op->Asl.ExtraValue,
|
|
(UINT32) Op->Asl.Child->Asl.Value.Integer,
|
|
Op->Asl.Child->Asl.ExtraValue);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 5) Check for a connection object */
|
|
#if 0
|
|
else if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONNECTION)
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
#endif
|
|
|
|
Op->Asl.Node = Node;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: XfNamespaceLocateEnd
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Ascending callback used during cross reference. We only
|
|
* need to worry about scope management here.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
XfNamespaceLocateEnd (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
|
|
const ACPI_OPCODE_INFO *OpInfo;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (XfNamespaceLocateEnd);
|
|
|
|
|
|
/* We are only interested in opcodes that have an associated name */
|
|
|
|
OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
|
|
if (!(OpInfo->Flags & AML_NAMED))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Not interested in name references, we did not open a scope for them */
|
|
|
|
if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_METHODCALL) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_EXTERNAL))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Pop the scope stack if necessary */
|
|
|
|
if (AcpiNsOpensScope (AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode)))
|
|
{
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"%s: Popping scope for Op %p\n",
|
|
AcpiUtGetTypeName (OpInfo->ObjectType), Op));
|
|
|
|
(void) AcpiDsScopeStackPop (WalkState);
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|