707 lines
21 KiB
C
707 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: exconvrt - Object conversion routines
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* $Revision: 16 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __EXCONVRT_C__
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#include "acpi.h"
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#include "acparser.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#include "acevents.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#define _COMPONENT ACPI_EXECUTER
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MODULE_NAME ("exconvrt")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToInteger
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*
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* PARAMETERS: *ObjDesc - Object to be converted. Must be an
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* Integer, Buffer, or String
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an ACPI Object to an integer.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToInteger (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ResultDesc,
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ACPI_WALK_STATE *WalkState)
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{
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UINT32 i;
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ACPI_OPERAND_OBJECT *RetDesc;
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UINT32 Count;
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char *Pointer;
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ACPI_INTEGER Result;
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UINT32 IntegerSize = sizeof (ACPI_INTEGER);
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_INTEGER:
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*ResultDesc = ObjDesc;
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return (AE_OK);
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case ACPI_TYPE_STRING:
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Pointer = ObjDesc->String.Pointer;
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Count = ObjDesc->String.Length;
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break;
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case ACPI_TYPE_BUFFER:
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Pointer = (char *) ObjDesc->Buffer.Pointer;
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Count = ObjDesc->Buffer.Length;
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break;
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default:
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return (AE_TYPE);
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}
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/*
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* Create a new integer
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*/
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RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!RetDesc)
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{
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return (AE_NO_MEMORY);
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}
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/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
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if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32)
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{
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/*
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* We are running a method that exists in a 32-bit ACPI table.
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* Truncate the value to 32 bits by zeroing out the upper 32-bit field
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*/
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IntegerSize = sizeof (UINT32);
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}
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/*
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* Convert the buffer/string to an integer. Note that both buffers and
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* strings are treated as raw data - we don't convert ascii to hex for
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* strings.
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*
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* There are two terminating conditions for the loop:
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* 1) The size of an integer has been reached, or
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* 2) The end of the buffer or string has been reached
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*/
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Result = 0;
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/* Transfer no more than an integer's worth of data */
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if (Count > IntegerSize)
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{
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Count = IntegerSize;
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}
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/*
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* String conversion is different than Buffer conversion
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*/
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_STRING:
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/* TBD: Need to use 64-bit STRTOUL */
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/*
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* Convert string to an integer
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* String must be hexadecimal as per the ACPI specification
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*/
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Result = STRTOUL (Pointer, NULL, 16);
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break;
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case ACPI_TYPE_BUFFER:
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/*
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* Buffer conversion - we simply grab enough raw data from the
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* buffer to fill an integer
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*/
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for (i = 0; i < Count; i++)
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{
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/*
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* Get next byte and shift it into the Result.
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* Little endian is used, meaning that the first byte of the buffer
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* is the LSB of the integer
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*/
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Result |= (((ACPI_INTEGER) Pointer[i]) << (i * 8));
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}
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break;
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}
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/* Save the Result, delete original descriptor, store new descriptor */
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RetDesc->Integer.Value = Result;
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if (*ResultDesc == ObjDesc)
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{
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if (WalkState->Opcode != AML_STORE_OP)
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{
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AcpiUtRemoveReference (ObjDesc);
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}
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}
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*ResultDesc = RetDesc;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToBuffer
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*
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* PARAMETERS: *ObjDesc - Object to be converted. Must be an
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* Integer, Buffer, or String
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an ACPI Object to an Buffer
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToBuffer (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ResultDesc,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *RetDesc;
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UINT32 i;
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UINT32 IntegerSize = sizeof (ACPI_INTEGER);
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UINT8 *NewBuf;
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_INTEGER:
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/*
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* Create a new Buffer
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*/
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RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
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if (!RetDesc)
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{
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return (AE_NO_MEMORY);
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}
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/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
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if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32)
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{
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/*
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* We are running a method that exists in a 32-bit ACPI table.
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* Truncate the value to 32 bits by zeroing out the upper
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* 32-bit field
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*/
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IntegerSize = sizeof (UINT32);
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}
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/* Need enough space for one integers */
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RetDesc->Buffer.Length = IntegerSize;
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NewBuf = ACPI_MEM_CALLOCATE (IntegerSize);
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if (!NewBuf)
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{
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REPORT_ERROR
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(("ExDyadic2R/ConcatOp: Buffer allocation failure\n"));
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AcpiUtRemoveReference (RetDesc);
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return (AE_NO_MEMORY);
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}
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/* Copy the integer to the buffer */
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for (i = 0; i < IntegerSize; i++)
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{
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NewBuf[i] = (UINT8) (ObjDesc->Integer.Value >> (i * 8));
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}
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RetDesc->Buffer.Pointer = NewBuf;
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/* Return the new buffer descriptor */
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if (*ResultDesc == ObjDesc)
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{
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if (WalkState->Opcode != AML_STORE_OP)
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{
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AcpiUtRemoveReference (ObjDesc);
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}
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}
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*ResultDesc = RetDesc;
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break;
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case ACPI_TYPE_STRING:
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*ResultDesc = ObjDesc;
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break;
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case ACPI_TYPE_BUFFER:
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*ResultDesc = ObjDesc;
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break;
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default:
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return (AE_TYPE);
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break;
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToString
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*
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* PARAMETERS: *ObjDesc - Object to be converted. Must be an
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* Integer, Buffer, or String
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an ACPI Object to a string
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToString (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ResultDesc,
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UINT32 MaxLength,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *RetDesc;
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UINT32 i;
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UINT32 j;
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UINT32 Index;
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UINT32 StringLength;
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UINT32 IntegerSize = sizeof (ACPI_INTEGER);
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UINT8 *NewBuf;
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UINT8 *Pointer;
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_INTEGER:
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/*
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* Create a new String
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*/
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RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
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if (!RetDesc)
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{
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return (AE_NO_MEMORY);
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}
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/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
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if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32)
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{
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/*
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* We are running a method that exists in a 32-bit ACPI table.
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* Truncate the value to 32 bits by zeroing out the upper
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* 32-bit field
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*/
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IntegerSize = sizeof (UINT32);
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}
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/* Need enough space for one ASCII integer plus null terminator */
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RetDesc->String.Length = (IntegerSize * 2) + 1;
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NewBuf = ACPI_MEM_CALLOCATE (RetDesc->String.Length);
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if (!NewBuf)
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{
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REPORT_ERROR
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(("ExConvertToString: Buffer allocation failure\n"));
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AcpiUtRemoveReference (RetDesc);
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return (AE_NO_MEMORY);
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}
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/* Copy the integer to the buffer */
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for (i = 0, j = ((IntegerSize * 2) -1); i < (IntegerSize * 2); i++, j--)
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{
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NewBuf[i] = AcpiGbl_HexToAscii [(ObjDesc->Integer.Value >> (j * 4)) & 0xF];
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}
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/* Null terminate at the correct place */
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if (MaxLength < i)
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{
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NewBuf[MaxLength] = 0;
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}
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else
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{
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NewBuf [i] = 0;
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}
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RetDesc->Buffer.Pointer = NewBuf;
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/* Return the new buffer descriptor */
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if (*ResultDesc == ObjDesc)
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{
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if (WalkState->Opcode != AML_STORE_OP)
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{
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AcpiUtRemoveReference (ObjDesc);
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}
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}
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*ResultDesc = RetDesc;
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break;
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case ACPI_TYPE_BUFFER:
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StringLength = ObjDesc->Buffer.Length * 3;
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if (MaxLength > ACPI_MAX_STRING_CONVERSION)
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{
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if (StringLength > ACPI_MAX_STRING_CONVERSION)
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{
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return (AE_AML_STRING_LIMIT);
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}
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}
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/*
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* Create a new string object
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*/
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RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
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if (!RetDesc)
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{
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return (AE_NO_MEMORY);
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}
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/* String length is the lesser of the Max or the actual length */
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if (MaxLength < StringLength)
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{
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StringLength = MaxLength;
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}
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NewBuf = ACPI_MEM_CALLOCATE (StringLength + 1);
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if (!NewBuf)
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{
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REPORT_ERROR
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(("ExConvertToString: Buffer allocation failure\n"));
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AcpiUtRemoveReference (RetDesc);
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return (AE_NO_MEMORY);
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}
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/*
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* Convert each byte of the buffer to two ASCII characters plus a space.
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*/
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Pointer = ObjDesc->Buffer.Pointer;
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Index = 0;
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for (i = 0; i < (StringLength/3); i++)
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{
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NewBuf[Index + 0] = AcpiGbl_HexToAscii [Pointer[i] & 0x0F];
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NewBuf[Index + 1] = AcpiGbl_HexToAscii [(Pointer[i] >> 4) & 0x0F];
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NewBuf[Index + 2] = ' ';
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Index += 3;
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}
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/* Null terminate */
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NewBuf [Index-1] = 0;
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RetDesc->Buffer.Pointer = NewBuf;
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RetDesc->String.Length = STRLEN ((char *) NewBuf);
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/* Return the new buffer descriptor */
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if (*ResultDesc == ObjDesc)
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{
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if (WalkState->Opcode != AML_STORE_OP)
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{
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AcpiUtRemoveReference (ObjDesc);
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}
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}
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*ResultDesc = RetDesc;
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break;
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case ACPI_TYPE_STRING:
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if (MaxLength >= ObjDesc->String.Length)
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{
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*ResultDesc = ObjDesc;
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}
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else
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{
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/* Must copy the string first and then truncate it */
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return (AE_NOT_IMPLEMENTED);
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}
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break;
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default:
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return (AE_TYPE);
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break;
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExConvertToTargetType
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*
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* PARAMETERS: *ObjDesc - Object to be converted.
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* WalkState - Current method state
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*
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* RETURN: Status
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*
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* DESCRIPTION:
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConvertToTargetType (
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ACPI_OBJECT_TYPE8 DestinationType,
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ACPI_OPERAND_OBJECT **ObjDesc,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status = AE_OK;
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FUNCTION_TRACE ("ExConvertToTargetType");
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/*
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* If required by the target,
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* perform implicit conversion on the source before we store it.
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*/
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switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs))
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{
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case ARGI_SIMPLE_TARGET:
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case ARGI_FIXED_TARGET:
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case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
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switch (DestinationType)
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{
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case INTERNAL_TYPE_REGION_FIELD:
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/*
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* Named field can always handle conversions
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*/
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break;
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default:
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/* No conversion allowed for these types */
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if (DestinationType != (*ObjDesc)->Common.Type)
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{
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DEBUG_PRINTP (ACPI_ERROR,
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("Target does not allow conversion of type %s to %s\n",
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AcpiUtGetTypeName ((*ObjDesc)->Common.Type),
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AcpiUtGetTypeName (DestinationType)));
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Status = AE_TYPE;
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}
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}
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break;
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case ARGI_TARGETREF:
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switch (DestinationType)
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{
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case ACPI_TYPE_INTEGER:
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case ACPI_TYPE_BUFFER_FIELD:
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case INTERNAL_TYPE_BANK_FIELD:
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case INTERNAL_TYPE_INDEX_FIELD:
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/*
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* These types require an Integer operand. We can convert
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* a Buffer or a String to an Integer if necessary.
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*/
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Status = AcpiExConvertToInteger (*ObjDesc, ObjDesc, WalkState);
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break;
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case ACPI_TYPE_STRING:
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/*
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* The operand must be a String. We can convert an
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* Integer or Buffer if necessary
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*/
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Status = AcpiExConvertToString (*ObjDesc, ObjDesc, ACPI_UINT32_MAX, WalkState);
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break;
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case ACPI_TYPE_BUFFER:
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/*
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* The operand must be a String. We can convert an
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* Integer or Buffer if necessary
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*/
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Status = AcpiExConvertToBuffer (*ObjDesc, ObjDesc, WalkState);
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break;
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}
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break;
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case ARGI_REFERENCE:
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/*
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* CreateXxxxField cases - we are storing the field object into the name
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*/
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break;
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default:
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DEBUG_PRINTP (ACPI_ERROR,
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("Unknown Target type ID 0x%X Op %s DestType %s\n",
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GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs),
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WalkState->OpInfo->Name, AcpiUtGetTypeName (DestinationType)));
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Status = AE_AML_INTERNAL;
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}
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/*
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* Source-to-Target conversion semantics:
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*
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* If conversion to the target type cannot be performed, then simply
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* overwrite the target with the new object and type.
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*/
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if (Status == AE_TYPE)
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{
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Status = AE_OK;
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}
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return_ACPI_STATUS (Status);
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}
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