722 lines
22 KiB
C
722 lines
22 KiB
C
/******************************************************************************
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*
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* Module Name: utobject - ACPI object create/delete/size/cache routines
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* $Revision: 79 $
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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 - 2002, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __UTOBJECT_C__
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#include "acpi.h"
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#include "acnamesp.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME ("utobject")
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtCreateInternalObjectDbg
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*
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* PARAMETERS: ModuleName - Source file name of caller
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* LineNumber - Line number of caller
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* ComponentId - Component type of caller
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* Type - ACPI Type of the new object
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*
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* RETURN: Object - The new object. Null on failure
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*
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* DESCRIPTION: Create and initialize a new internal object.
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*
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* NOTE: We always allocate the worst-case object descriptor because
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* these objects are cached, and we want them to be
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* one-size-satisifies-any-request. This in itself may not be
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* the most memory efficient, but the efficiency of the object
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* cache should more than make up for this!
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*
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******************************************************************************/
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ACPI_OPERAND_OBJECT *
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AcpiUtCreateInternalObjectDbg (
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NATIVE_CHAR *ModuleName,
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UINT32 LineNumber,
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UINT32 ComponentId,
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ACPI_OBJECT_TYPE Type)
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{
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ACPI_OPERAND_OBJECT *Object;
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ACPI_OPERAND_OBJECT *SecondObject;
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ACPI_FUNCTION_TRACE_STR ("UtCreateInternalObjectDbg", AcpiUtGetTypeName (Type));
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/* Allocate the raw object descriptor */
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Object = AcpiUtAllocateObjectDescDbg (ModuleName, LineNumber, ComponentId);
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if (!Object)
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{
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return_PTR (NULL);
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}
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switch (Type)
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{
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case ACPI_TYPE_REGION:
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case ACPI_TYPE_BUFFER_FIELD:
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/* These types require a secondary object */
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SecondObject = AcpiUtAllocateObjectDescDbg (ModuleName, LineNumber, ComponentId);
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if (!SecondObject)
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{
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AcpiUtDeleteObjectDesc (Object);
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return_PTR (NULL);
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}
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SecondObject->Common.Type = ACPI_TYPE_LOCAL_EXTRA;
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SecondObject->Common.ReferenceCount = 1;
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/* Link the second object to the first */
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Object->Common.NextObject = SecondObject;
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break;
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default:
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/* All others have no secondary object */
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break;
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}
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/* Save the object type in the object descriptor */
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Object->Common.Type = (UINT8) Type;
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/* Init the reference count */
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Object->Common.ReferenceCount = 1;
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/* Any per-type initialization should go here */
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return_PTR (Object);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtCreateBufferObject
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*
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* PARAMETERS: BufferSize - Size of buffer to be created
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*
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* RETURN: Pointer to a new Buffer object
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*
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* DESCRIPTION: Create a fully initialized buffer object
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*
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******************************************************************************/
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ACPI_OPERAND_OBJECT *
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AcpiUtCreateBufferObject (
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ACPI_SIZE BufferSize)
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{
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ACPI_OPERAND_OBJECT *BufferDesc;
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UINT8 *Buffer;
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ACPI_FUNCTION_TRACE_U32 ("UtCreateBufferObject", BufferSize);
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/*
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* Create a new Buffer object
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*/
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BufferDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
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if (!BufferDesc)
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{
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return_PTR (NULL);
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}
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/* Allocate the actual buffer */
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Buffer = ACPI_MEM_CALLOCATE (BufferSize);
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if (!Buffer)
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{
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ACPI_REPORT_ERROR (("CreateBuffer: could not allocate size %X\n",
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(UINT32) BufferSize));
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AcpiUtRemoveReference (BufferDesc);
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return_PTR (NULL);
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}
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/* Complete buffer object initialization */
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BufferDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
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BufferDesc->Buffer.Pointer = Buffer;
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BufferDesc->Buffer.Length = (UINT32) BufferSize;
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/* Return the new buffer descriptor */
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return_PTR (BufferDesc);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtValidInternalObject
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*
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* PARAMETERS: Object - Object to be validated
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*
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* RETURN: Validate a pointer to be an ACPI_OPERAND_OBJECT
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*
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******************************************************************************/
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BOOLEAN
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AcpiUtValidInternalObject (
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void *Object)
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{
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ACPI_FUNCTION_NAME ("UtValidInternalObject");
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/* Check for a null pointer */
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if (!Object)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Null Object Ptr\n"));
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return (FALSE);
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}
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/* Check the descriptor type field */
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switch (ACPI_GET_DESCRIPTOR_TYPE (Object))
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{
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case ACPI_DESC_TYPE_OPERAND:
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/* The object appears to be a valid ACPI_OPERAND_OBJECT */
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return (TRUE);
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case ACPI_DESC_TYPE_NAMED:
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"**** Obj %p is a named obj, not ACPI obj\n", Object));
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break;
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case ACPI_DESC_TYPE_PARSER:
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"**** Obj %p is a parser obj, not ACPI obj\n", Object));
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break;
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case ACPI_DESC_TYPE_CACHED:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"**** Obj %p has already been released to internal cache\n", Object));
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"**** Obj %p has unknown descriptor type %X\n", Object,
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ACPI_GET_DESCRIPTOR_TYPE (Object)));
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break;
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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: AcpiUtAllocateObjectDescDbg
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*
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* PARAMETERS: ModuleName - Caller's module name (for error output)
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* LineNumber - Caller's line number (for error output)
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* ComponentId - Caller's component ID (for error output)
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*
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* RETURN: Pointer to newly allocated object descriptor. Null on error
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*
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* DESCRIPTION: Allocate a new object descriptor. Gracefully handle
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* error conditions.
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*
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******************************************************************************/
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void *
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AcpiUtAllocateObjectDescDbg (
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NATIVE_CHAR *ModuleName,
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UINT32 LineNumber,
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UINT32 ComponentId)
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{
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ACPI_OPERAND_OBJECT *Object;
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ACPI_FUNCTION_TRACE ("UtAllocateObjectDescDbg");
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Object = AcpiUtAcquireFromCache (ACPI_MEM_LIST_OPERAND);
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if (!Object)
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{
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_ACPI_REPORT_ERROR (ModuleName, LineNumber, ComponentId,
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("Could not allocate an object descriptor\n"));
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return_PTR (NULL);
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}
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/* Mark the descriptor type */
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ACPI_SET_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_OPERAND);
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ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n",
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Object, (UINT32) sizeof (ACPI_OPERAND_OBJECT)));
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return_PTR (Object);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtDeleteObjectDesc
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*
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* PARAMETERS: Object - An Acpi internal object to be deleted
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*
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* RETURN: None.
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*
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* DESCRIPTION: Free an ACPI object descriptor or add it to the object cache
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*
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******************************************************************************/
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void
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AcpiUtDeleteObjectDesc (
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ACPI_OPERAND_OBJECT *Object)
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{
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ACPI_FUNCTION_TRACE_PTR ("UtDeleteObjectDesc", Object);
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/* Object must be an ACPI_OPERAND_OBJECT */
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if (ACPI_GET_DESCRIPTOR_TYPE (Object) != ACPI_DESC_TYPE_OPERAND)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Obj %p is not an ACPI object\n", Object));
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return_VOID;
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}
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AcpiUtReleaseToCache (ACPI_MEM_LIST_OPERAND, Object);
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtDeleteObjectCache
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Purge the global state object cache. Used during subsystem
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* termination.
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*
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******************************************************************************/
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void
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AcpiUtDeleteObjectCache (
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void)
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{
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ACPI_FUNCTION_TRACE ("UtDeleteObjectCache");
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AcpiUtDeleteGenericCache (ACPI_MEM_LIST_OPERAND);
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtGetSimpleObjectSize
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*
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* PARAMETERS: *InternalObject - Pointer to the object we are examining
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* *ObjLength - Where the length is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to determine the space required to
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* contain a simple object for return to an external user.
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*
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* The length includes the object structure plus any additional
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* needed space.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtGetSimpleObjectSize (
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ACPI_OPERAND_OBJECT *InternalObject,
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ACPI_SIZE *ObjLength)
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{
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ACPI_SIZE Length;
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE_PTR ("UtGetSimpleObjectSize", InternalObject);
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/* Handle a null object (Could be a uninitialized package element -- which is legal) */
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if (!InternalObject)
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{
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*ObjLength = 0;
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return_ACPI_STATUS (AE_OK);
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}
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/* Start with the length of the Acpi object */
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Length = sizeof (ACPI_OBJECT);
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if (ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_NAMED)
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{
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/* Object is a named object (reference), just return the length */
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*ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length);
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return_ACPI_STATUS (Status);
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}
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/*
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* The final length depends on the object type
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* Strings and Buffers are packed right up against the parent object and
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* must be accessed bytewise or there may be alignment problems on
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* certain processors
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*/
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switch (ACPI_GET_OBJECT_TYPE (InternalObject))
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{
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case ACPI_TYPE_STRING:
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Length += (ACPI_SIZE) InternalObject->String.Length + 1;
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break;
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case ACPI_TYPE_BUFFER:
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Length += (ACPI_SIZE) InternalObject->Buffer.Length;
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break;
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case ACPI_TYPE_INTEGER:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_POWER:
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/*
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* No extra data for these types
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*/
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break;
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case ACPI_TYPE_LOCAL_REFERENCE:
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switch (InternalObject->Reference.Opcode)
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{
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case AML_INT_NAMEPATH_OP:
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/*
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* Get the actual length of the full pathname to this object.
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* The reference will be converted to the pathname to the object
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*/
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Length += ACPI_ROUND_UP_TO_NATIVE_WORD (AcpiNsGetPathnameLength (InternalObject->Reference.Node));
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break;
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default:
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/*
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* No other reference opcodes are supported.
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* Notably, Locals and Args are not supported, but this may be
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* required eventually.
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Unsupported Reference opcode=%X in object %p\n",
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InternalObject->Reference.Opcode, InternalObject));
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Status = AE_TYPE;
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break;
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}
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported type=%X in object %p\n",
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ACPI_GET_OBJECT_TYPE (InternalObject), InternalObject));
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Status = AE_TYPE;
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break;
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}
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/*
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* Account for the space required by the object rounded up to the next
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* multiple of the machine word size. This keeps each object aligned
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* on a machine word boundary. (preventing alignment faults on some
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* machines.)
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*/
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*ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtGetElementLength
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*
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|
* PARAMETERS: ACPI_PKG_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get the length of one package element.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtGetElementLength (
|
|
UINT8 ObjectType,
|
|
ACPI_OPERAND_OBJECT *SourceObject,
|
|
ACPI_GENERIC_STATE *State,
|
|
void *Context)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context;
|
|
ACPI_SIZE ObjectSpace;
|
|
|
|
|
|
switch (ObjectType)
|
|
{
|
|
case ACPI_COPY_TYPE_SIMPLE:
|
|
|
|
/*
|
|
* Simple object - just get the size (Null object/entry is handled
|
|
* here also) and sum it into the running package length
|
|
*/
|
|
Status = AcpiUtGetSimpleObjectSize (SourceObject, &ObjectSpace);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Info->Length += ObjectSpace;
|
|
break;
|
|
|
|
|
|
case ACPI_COPY_TYPE_PACKAGE:
|
|
|
|
/* Package object - nothing much to do here, let the walk handle it */
|
|
|
|
Info->NumPackages++;
|
|
State->Pkg.ThisTargetObj = NULL;
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
/* No other types allowed */
|
|
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetPackageObjectSize
|
|
*
|
|
* PARAMETERS: *InternalObject - Pointer to the object we are examining
|
|
* *ObjLength - Where the length is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This function is called to determine the space required to
|
|
* contain a package object for return to an external user.
|
|
*
|
|
* This is moderately complex since a package contains other
|
|
* objects including packages.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtGetPackageObjectSize (
|
|
ACPI_OPERAND_OBJECT *InternalObject,
|
|
ACPI_SIZE *ObjLength)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_PKG_INFO Info;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("UtGetPackageObjectSize", InternalObject);
|
|
|
|
|
|
Info.Length = 0;
|
|
Info.ObjectSpace = 0;
|
|
Info.NumPackages = 1;
|
|
|
|
Status = AcpiUtWalkPackageTree (InternalObject, NULL,
|
|
AcpiUtGetElementLength, &Info);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* We have handled all of the objects in all levels of the package.
|
|
* just add the length of the package objects themselves.
|
|
* Round up to the next machine word.
|
|
*/
|
|
Info.Length += ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)) *
|
|
(ACPI_SIZE) Info.NumPackages;
|
|
|
|
/* Return the total package length */
|
|
|
|
*ObjLength = Info.Length;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetObjectSize
|
|
*
|
|
* PARAMETERS: *InternalObject - Pointer to the object we are examining
|
|
* *ObjLength - Where the length will be returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This function is called to determine the space required to
|
|
* contain an object for return to an API user.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtGetObjectSize(
|
|
ACPI_OPERAND_OBJECT *InternalObject,
|
|
ACPI_SIZE *ObjLength)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
if ((ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_OPERAND) &&
|
|
(ACPI_GET_OBJECT_TYPE (InternalObject) == ACPI_TYPE_PACKAGE))
|
|
{
|
|
Status = AcpiUtGetPackageObjectSize (InternalObject, ObjLength);
|
|
}
|
|
else
|
|
{
|
|
Status = AcpiUtGetSimpleObjectSize (InternalObject, ObjLength);
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|