644 lines
23 KiB
C
644 lines
23 KiB
C
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/******************************************************************************
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*
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* Module Name: exprep - ACPI AML (p-code) execution - field prep utilities
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* $Revision: 95 $
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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 __EXPREP_C__
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#include "acpi.h"
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#include "acinterp.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "acparser.h"
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#define _COMPONENT ACPI_EXECUTER
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MODULE_NAME ("exprep")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExDecodeFieldAccessType
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*
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* PARAMETERS: Access - Encoded field access bits
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* Length - Field length.
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*
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* RETURN: Field granularity (8, 16, 32 or 64)
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*
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* DESCRIPTION: Decode the AccessType bits of a field definition.
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*
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******************************************************************************/
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static UINT32
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AcpiExDecodeFieldAccessType (
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UINT32 Access,
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UINT16 Length,
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UINT32 *Alignment)
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{
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PROC_NAME ("ExDecodeFieldAccessType");
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switch (Access)
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{
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case ACCESS_ANY_ACC:
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*Alignment = 8;
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/* Use the length to set the access type */
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if (Length <= 8)
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{
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return (8);
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}
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else if (Length <= 16)
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{
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return (16);
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}
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else if (Length <= 32)
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{
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return (32);
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}
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else if (Length <= 64)
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{
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return (64);
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}
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/* Default is 8 (byte) */
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return (8);
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break;
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case ACCESS_BYTE_ACC:
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*Alignment = 8;
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return (8);
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break;
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case ACCESS_WORD_ACC:
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*Alignment = 16;
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return (16);
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break;
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case ACCESS_DWORD_ACC:
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*Alignment = 32;
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return (32);
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break;
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case ACCESS_QWORD_ACC: /* ACPI 2.0 */
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*Alignment = 64;
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return (64);
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break;
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default:
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/* Invalid field access type */
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Unknown field access type %x\n",
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Access));
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return (0);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExPrepCommonFieldObject
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*
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* PARAMETERS: ObjDesc - The field object
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* FieldFlags - Access, LockRule, and UpdateRule.
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* The format of a FieldFlag is described
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* in the ACPI specification
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* FieldBitPosition - Field start position
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* FieldBitLength - Field length in number of bits
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize the areas of the field object that are common
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* to the various types of fields.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExPrepCommonFieldObject (
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ACPI_OPERAND_OBJECT *ObjDesc,
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UINT8 FieldFlags,
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UINT32 FieldBitPosition,
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UINT32 FieldBitLength)
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{
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UINT32 AccessBitWidth;
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UINT32 Alignment;
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UINT32 NearestByteAddress;
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FUNCTION_TRACE ("ExPrepCommonFieldObject");
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/*
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* Note: the structure being initialized is the
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* ACPI_COMMON_FIELD_INFO; No structure fields outside of the common area
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* are initialized by this procedure.
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*/
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/* Demultiplex the FieldFlags byte */
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ObjDesc->CommonField.LockRule = (UINT8) ((FieldFlags & LOCK_RULE_MASK)
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>> LOCK_RULE_SHIFT);
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ObjDesc->CommonField.UpdateRule = (UINT8) ((FieldFlags & UPDATE_RULE_MASK)
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>> UPDATE_RULE_SHIFT);
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/* Other misc fields */
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ObjDesc->CommonField.BitLength = (UINT16) FieldBitLength;
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/*
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* Decode the access type so we can compute offsets. The access type gives
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* two pieces of information - the width of each field access and the
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* necessary alignment of the access. For AnyAcc, the width used is the
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* largest necessary/possible in an attempt to access the whole field in one
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* I/O operation. However, for AnyAcc, the alignment is 8. For all other
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* access types (Byte, Word, Dword, Qword), the width is the same as the
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* alignment.
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*/
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AccessBitWidth = AcpiExDecodeFieldAccessType (
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((FieldFlags & ACCESS_TYPE_MASK) >> ACCESS_TYPE_SHIFT),
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ObjDesc->Field.BitLength, &Alignment);
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if (!AccessBitWidth)
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{
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return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
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}
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/* Setup width (access granularity) fields */
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ObjDesc->CommonField.AccessBitWidth = (UINT8) AccessBitWidth; /* 8, 16, 32, 64 */
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ObjDesc->CommonField.AccessByteWidth = (UINT8) DIV_8 (AccessBitWidth); /* 1, 2, 4, 8 */
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if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
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{
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/*
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* BufferField access can be on any byte boundary, so the
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* alignment is always 8 (regardless of any alignment implied by the
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* field access type.)
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*/
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Alignment = 8;
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}
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/*
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* BaseByteOffset is the address of the start of the field within the region. It is
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* the byte address of the first *datum* (field-width data unit) of the field.
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* (i.e., the first datum that contains at least the first *bit* of the field.)
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*/
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NearestByteAddress = ROUND_BITS_DOWN_TO_BYTES (FieldBitPosition);
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ObjDesc->CommonField.BaseByteOffset = ROUND_DOWN (NearestByteAddress,
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DIV_8 (Alignment));
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/*
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* StartFieldBitOffset is the offset of the first bit of the field within a field datum.
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* This is calculated as the number of bits from the BaseByteOffset. In other words,
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* the start of the field is relative to a byte address, regardless of the access type
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* of the field.
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*/
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ObjDesc->CommonField.StartFieldBitOffset = (UINT8) (MOD_8 (FieldBitPosition));
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/*
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* DatumValidBits is the number of valid field bits in the first field datum.
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*/
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ObjDesc->CommonField.DatumValidBits = (UINT8) (AccessBitWidth -
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ObjDesc->CommonField.StartFieldBitOffset);
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/*
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* Valid bits -- the number of bits that compose a partial datum,
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* 1) At the end of the field within the region (arbitrary starting bit offset)
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* 2) At the end of a buffer used to contain the field (starting offset always zero)
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*/
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ObjDesc->CommonField.EndFieldValidBits = (UINT8) ((ObjDesc->CommonField.StartFieldBitOffset +
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FieldBitLength) % AccessBitWidth);
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ObjDesc->CommonField.EndBufferValidBits = (UINT8) (FieldBitLength % AccessBitWidth); /* StartBufferBitOffset always = 0 */
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/*
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* Does the entire field fit within a single field access element
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* (datum)? (without crossing a datum boundary)
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*/
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if ((ObjDesc->CommonField.StartFieldBitOffset + ObjDesc->CommonField.BitLength) <=
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(UINT16) ObjDesc->CommonField.AccessBitWidth)
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{
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ObjDesc->CommonField.AccessFlags |= AFIELD_SINGLE_DATUM;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExPrepRegionFieldValue
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*
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* PARAMETERS: Node - Owning Node
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* RegionNode - Region in which field is being defined
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* FieldFlags - Access, LockRule, and UpdateRule.
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* FieldBitPosition - Field start position
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* FieldBitLength - Field length in number of bits
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*
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* RETURN: Status
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*
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* DESCRIPTION: Construct an ACPI_OPERAND_OBJECT of type DefField and
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* connect it to the parent Node.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExPrepRegionFieldValue (
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ACPI_NAMESPACE_NODE *Node,
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ACPI_HANDLE RegionNode,
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UINT8 FieldFlags,
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UINT32 FieldBitPosition,
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UINT32 FieldBitLength)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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UINT32 Type;
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ACPI_STATUS Status;
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FUNCTION_TRACE ("ExPrepRegionFieldValue");
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/* Parameter validation */
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if (!RegionNode)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null RegionNode\n"));
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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Type = AcpiNsGetType (RegionNode);
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if (Type != ACPI_TYPE_REGION)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Needed Region, found type %X %s\n",
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Type, AcpiUtGetTypeName (Type)));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Allocate a new object */
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ObjDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REGION_FIELD);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* ObjDesc and Region valid */
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DUMP_OPERANDS ((ACPI_OPERAND_OBJECT **) &Node, IMODE_EXECUTE,
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"ExPrepRegionFieldValue", 1, "case RegionField");
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DUMP_OPERANDS ((ACPI_OPERAND_OBJECT **) &RegionNode, IMODE_EXECUTE,
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"ExPrepRegionFieldValue", 1, "case RegionField");
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/* Initialize areas of the object that are common to all fields */
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Status = AcpiExPrepCommonFieldObject (ObjDesc, FieldFlags,
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FieldBitPosition, FieldBitLength);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Initialize areas of the object that are specific to this field type */
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ObjDesc->Field.RegionObj = AcpiNsGetAttachedObject (RegionNode);
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/* An additional reference for the container */
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AcpiUtAddReference (ObjDesc->Field.RegionObj);
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/* Debug info */
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Bitoff=%X Off=%X Gran=%X Region %p\n",
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ObjDesc->Field.StartFieldBitOffset, ObjDesc->Field.BaseByteOffset,
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ObjDesc->Field.AccessBitWidth, ObjDesc->Field.RegionObj));
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "set NamedObj %p (%4.4s) val = %p\n",
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Node, &(Node->Name), ObjDesc));
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/*
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* Store the constructed descriptor (ObjDesc) into the parent Node,
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* preserving the current type of that NamedObj.
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*/
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Status = AcpiNsAttachObject (Node, ObjDesc, (UINT8) AcpiNsGetType (Node));
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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: AcpiExPrepBankFieldValue
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*
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* PARAMETERS: Node - Owning Node
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* RegionNode - Region in which field is being defined
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* BankRegisterNode - Bank selection register node
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* BankVal - Value to store in selection register
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* FieldFlags - Access, LockRule, and UpdateRule
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* FieldBitPosition - Field start position
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* FieldBitLength - Field length in number of bits
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*
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* RETURN: Status
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*
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* DESCRIPTION: Construct an object of type BankField and attach it to the
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* parent Node.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExPrepBankFieldValue (
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ACPI_NAMESPACE_NODE *Node,
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ACPI_NAMESPACE_NODE *RegionNode,
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ACPI_NAMESPACE_NODE *BankRegisterNode,
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UINT32 BankVal,
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UINT8 FieldFlags,
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UINT32 FieldBitPosition,
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UINT32 FieldBitLength)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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UINT32 Type;
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ACPI_STATUS Status;
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FUNCTION_TRACE ("ExPrepBankFieldValue");
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|
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/* Parameter validation */
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if (!RegionNode)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null RegionNode\n"));
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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Type = AcpiNsGetType (RegionNode);
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if (Type != ACPI_TYPE_REGION)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Needed Region, found type %X %s\n",
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Type, AcpiUtGetTypeName (Type)));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Allocate a new object */
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ObjDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_BANK_FIELD);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* ObjDesc and Region valid */
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DUMP_OPERANDS ((ACPI_OPERAND_OBJECT **) &Node, IMODE_EXECUTE,
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"ExPrepBankFieldValue", 1, "case BankField");
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DUMP_OPERANDS ((ACPI_OPERAND_OBJECT **) &RegionNode, IMODE_EXECUTE,
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"ExPrepBankFieldValue", 1, "case BankField");
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/* Initialize areas of the object that are common to all fields */
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Status = AcpiExPrepCommonFieldObject (ObjDesc, FieldFlags,
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FieldBitPosition, FieldBitLength);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Initialize areas of the object that are specific to this field type */
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ObjDesc->BankField.Value = BankVal;
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ObjDesc->BankField.RegionObj = AcpiNsGetAttachedObject (RegionNode);
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ObjDesc->BankField.BankRegisterObj = AcpiNsGetAttachedObject (BankRegisterNode);
|
|
|
|
/* An additional reference for the attached objects */
|
|
|
|
AcpiUtAddReference (ObjDesc->BankField.RegionObj);
|
|
AcpiUtAddReference (ObjDesc->BankField.BankRegisterObj);
|
|
|
|
/* Debug info */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "BitOff=%X Off=%X Gran=%X Region %p BankReg %p\n",
|
|
ObjDesc->BankField.StartFieldBitOffset, ObjDesc->BankField.BaseByteOffset,
|
|
ObjDesc->Field.AccessBitWidth, ObjDesc->BankField.RegionObj,
|
|
ObjDesc->BankField.BankRegisterObj));
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Set NamedObj %p (%4.4s) val=%p\n",
|
|
Node, &(Node->Name), ObjDesc));
|
|
|
|
|
|
/*
|
|
* Store the constructed descriptor (ObjDesc) into the parent Node,
|
|
* preserving the current type of that NamedObj.
|
|
*/
|
|
Status = AcpiNsAttachObject (Node, ObjDesc, (UINT8) AcpiNsGetType (Node));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExPrepIndexFieldValue
|
|
*
|
|
* PARAMETERS: Node - Owning Node
|
|
* IndexReg - Index register
|
|
* DataReg - Data register
|
|
* FieldFlags - Access, LockRule, and UpdateRule
|
|
* FieldBitPosition - Field start position
|
|
* FieldBitLength - Field length in number of bits
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Construct an ACPI_OPERAND_OBJECT of type IndexField and
|
|
* connect it to the parent Node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExPrepIndexFieldValue (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_NAMESPACE_NODE *IndexReg,
|
|
ACPI_NAMESPACE_NODE *DataReg,
|
|
UINT8 FieldFlags,
|
|
UINT32 FieldBitPosition,
|
|
UINT32 FieldBitLength)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
FUNCTION_TRACE ("ExPrepIndexFieldValue");
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!IndexReg || !DataReg)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null handle\n"));
|
|
return_ACPI_STATUS (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
/* Allocate a new object descriptor */
|
|
|
|
ObjDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_INDEX_FIELD);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Initialize areas of the object that are common to all fields */
|
|
|
|
Status = AcpiExPrepCommonFieldObject (ObjDesc, FieldFlags,
|
|
FieldBitPosition, FieldBitLength);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Initialize areas of the object that are specific to this field type */
|
|
|
|
ObjDesc->IndexField.DataObj = AcpiNsGetAttachedObject (DataReg);
|
|
ObjDesc->IndexField.IndexObj = AcpiNsGetAttachedObject (IndexReg);
|
|
ObjDesc->IndexField.Value = (UINT32) (FieldBitPosition /
|
|
ObjDesc->Field.AccessBitWidth);
|
|
|
|
/* An additional reference for the attached objects */
|
|
|
|
AcpiUtAddReference (ObjDesc->IndexField.DataObj);
|
|
AcpiUtAddReference (ObjDesc->IndexField.IndexObj);
|
|
|
|
/* Debug info */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "bitoff=%X off=%X gran=%X Index %p Data %p\n",
|
|
ObjDesc->IndexField.StartFieldBitOffset, ObjDesc->IndexField.BaseByteOffset,
|
|
ObjDesc->Field.AccessBitWidth, ObjDesc->IndexField.IndexObj,
|
|
ObjDesc->IndexField.DataObj));
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "set NamedObj %p (%4.4s) val = %p\n",
|
|
Node, &(Node->Name), ObjDesc));
|
|
|
|
|
|
/*
|
|
* Store the constructed descriptor (ObjDesc) into the parent Node,
|
|
* preserving the current type of that NamedObj.
|
|
*/
|
|
Status = AcpiNsAttachObject (Node, ObjDesc, (UINT8) AcpiNsGetType (Node));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|