626 lines
19 KiB
C
626 lines
19 KiB
C
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/******************************************************************************
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*
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* Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
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* xRevision: 118 $
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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 - 2004, 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: exmisc.c,v 1.10 2004/02/14 16:57:24 kochi Exp $");
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#define __EXMISC_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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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exmisc")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExGetObjectReference
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*
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* PARAMETERS: ObjDesc - Create a reference to this object
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* ReturnDesc - Where to store the reference
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* WalkState - Current state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Obtain and return a "reference" to the target object
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* Common code for the RefOfOp and the CondRefOfOp.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExGetObjectReference (
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ACPI_OPERAND_OBJECT *ObjDesc,
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ACPI_OPERAND_OBJECT **ReturnDesc,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *ReferenceObj;
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ACPI_OPERAND_OBJECT *ReferencedObj;
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ACPI_FUNCTION_TRACE_PTR ("ExGetObjectReference", ObjDesc);
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*ReturnDesc = NULL;
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switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
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{
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case ACPI_DESC_TYPE_OPERAND:
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if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_LOCAL_REFERENCE)
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{
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/*
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* Must be a reference to a Local or Arg
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*/
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switch (ObjDesc->Reference.Opcode)
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{
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case AML_LOCAL_OP:
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case AML_ARG_OP:
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/* The referenced object is the pseudo-node for the local/arg */
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ReferencedObj = ObjDesc->Reference.Object;
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break;
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default:
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ACPI_REPORT_ERROR (("Unknown Reference subtype in get ref %X\n",
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ObjDesc->Reference.Opcode));
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return_ACPI_STATUS (AE_AML_INTERNAL);
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}
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break;
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case ACPI_DESC_TYPE_NAMED:
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/*
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* A named reference that has already been resolved to a Node
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*/
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ReferencedObj = ObjDesc;
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break;
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default:
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ACPI_REPORT_ERROR (("Invalid descriptor type in get ref: %X\n",
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ACPI_GET_DESCRIPTOR_TYPE (ObjDesc)));
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return_ACPI_STATUS (AE_TYPE);
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}
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/* Create a new reference object */
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ReferenceObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
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if (!ReferenceObj)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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ReferenceObj->Reference.Opcode = AML_REF_OF_OP;
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ReferenceObj->Reference.Object = ReferencedObj;
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*ReturnDesc = ReferenceObj;
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p Type [%s], returning Reference %p\n",
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ObjDesc, AcpiUtGetObjectTypeName (ObjDesc), *ReturnDesc));
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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: AcpiExConcatTemplate
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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 walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Concatenate two resource templates
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExConcatTemplate (
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ACPI_OPERAND_OBJECT *ObjDesc1,
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ACPI_OPERAND_OBJECT *ObjDesc2,
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ACPI_OPERAND_OBJECT **ActualReturnDesc,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *ReturnDesc;
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UINT8 *NewBuf;
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UINT8 *EndTag1;
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UINT8 *EndTag2;
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ACPI_SIZE Length1;
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ACPI_SIZE Length2;
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ACPI_FUNCTION_TRACE ("ExConcatTemplate");
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/* Find the EndTags in each resource template */
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EndTag1 = AcpiUtGetResourceEndTag (ObjDesc1);
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EndTag2 = AcpiUtGetResourceEndTag (ObjDesc2);
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if (!EndTag1 || !EndTag2)
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{
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Compute the length of each part */
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Length1 = ACPI_PTR_DIFF (EndTag1, ObjDesc1->Buffer.Pointer);
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Length2 = ACPI_PTR_DIFF (EndTag2, ObjDesc2->Buffer.Pointer) +
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2; /* Size of END_TAG */
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/* Create a new buffer object for the result */
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ReturnDesc = AcpiUtCreateBufferObject (Length1 + Length2);
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if (!ReturnDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the templates to the new descriptor */
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NewBuf = ReturnDesc->Buffer.Pointer;
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ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer, Length1);
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ACPI_MEMCPY (NewBuf + Length1, ObjDesc2->Buffer.Pointer, Length2);
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/* Compute the new checksum */
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NewBuf[ReturnDesc->Buffer.Length - 1] =
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AcpiUtGenerateChecksum (ReturnDesc->Buffer.Pointer,
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(ReturnDesc->Buffer.Length - 1));
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/* Return the completed template descriptor */
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*ActualReturnDesc = ReturnDesc;
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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: AcpiExDoConcatenate
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*
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* PARAMETERS: ObjDesc1 - First source object
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* ObjDesc2 - Second source object
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* ActualReturnDesc - Where to place the return object
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* WalkState - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Concatenate two objects OF THE SAME TYPE.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExDoConcatenate (
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ACPI_OPERAND_OBJECT *ObjDesc1,
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ACPI_OPERAND_OBJECT *ObjDesc2,
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ACPI_OPERAND_OBJECT **ActualReturnDesc,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status;
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UINT32 i;
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ACPI_INTEGER ThisInteger;
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ACPI_OPERAND_OBJECT *ReturnDesc;
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char *NewBuf;
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ACPI_FUNCTION_ENTRY ();
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/*
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* There are three cases to handle:
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*
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* 1) Two Integers concatenated to produce a new Buffer
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* 2) Two Strings concatenated to produce a new String
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* 3) Two Buffers concatenated to produce a new Buffer
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*/
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switch (ACPI_GET_OBJECT_TYPE (ObjDesc1))
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{
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case ACPI_TYPE_INTEGER:
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/* Result of two Integers is a Buffer */
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/* Need enough buffer space for two integers */
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ReturnDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth * 2);
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if (!ReturnDesc)
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{
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return (AE_NO_MEMORY);
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}
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NewBuf = (char *) ReturnDesc->Buffer.Pointer;
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/* Convert the first integer */
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ThisInteger = ObjDesc1->Integer.Value;
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for (i = 0; i < AcpiGbl_IntegerByteWidth; i++)
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{
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NewBuf[i] = (char) ThisInteger;
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ThisInteger >>= 8;
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}
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/* Convert the second integer */
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ThisInteger = ObjDesc2->Integer.Value;
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for (; i < (ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); i++)
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{
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NewBuf[i] = (char) ThisInteger;
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ThisInteger >>= 8;
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}
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break;
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case ACPI_TYPE_STRING:
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/* Result of two Strings is a String */
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ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
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if (!ReturnDesc)
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{
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return (AE_NO_MEMORY);
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}
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/* Operand0 is string */
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NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) ObjDesc1->String.Length +
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(ACPI_SIZE) ObjDesc2->String.Length + 1);
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if (!NewBuf)
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{
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ACPI_REPORT_ERROR
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(("ExDoConcatenate: String allocation failure\n"));
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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/* Concatenate the strings */
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ACPI_STRCPY (NewBuf, ObjDesc1->String.Pointer);
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ACPI_STRCPY (NewBuf + ObjDesc1->String.Length,
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ObjDesc2->String.Pointer);
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/* Complete the String object initialization */
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ReturnDesc->String.Pointer = NewBuf;
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ReturnDesc->String.Length = ObjDesc1->String.Length +
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ObjDesc2->String.Length;
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break;
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case ACPI_TYPE_BUFFER:
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/* Result of two Buffers is a Buffer */
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ReturnDesc = AcpiUtCreateBufferObject (
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(ACPI_SIZE) ObjDesc1->Buffer.Length +
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(ACPI_SIZE) ObjDesc2->Buffer.Length);
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if (!ReturnDesc)
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{
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return (AE_NO_MEMORY);
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}
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NewBuf = (char *) ReturnDesc->Buffer.Pointer;
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/* Concatenate the buffers */
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ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer,
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ObjDesc1->Buffer.Length);
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ACPI_MEMCPY (NewBuf + ObjDesc1->Buffer.Length, ObjDesc2->Buffer.Pointer,
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ObjDesc2->Buffer.Length);
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break;
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default:
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/* Invalid object type, should not happen here */
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ACPI_REPORT_ERROR (("Concat - invalid obj type: %X\n",
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ACPI_GET_OBJECT_TYPE (ObjDesc1)));
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Status = AE_AML_INTERNAL;
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ReturnDesc = NULL;
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}
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*ActualReturnDesc = ReturnDesc;
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return (AE_OK);
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Cleanup:
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AcpiUtRemoveReference (ReturnDesc);
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return (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExDoMathOp
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*
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* PARAMETERS: Opcode - AML opcode
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* Operand0 - Integer operand #0
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* Operand1 - Integer operand #1
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*
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* RETURN: Integer result of the operation
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*
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* DESCRIPTION: Execute a math AML opcode. The purpose of having all of the
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* math functions here is to prevent a lot of pointer dereferencing
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* to obtain the operands.
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*
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******************************************************************************/
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ACPI_INTEGER
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AcpiExDoMathOp (
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UINT16 Opcode,
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ACPI_INTEGER Operand0,
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ACPI_INTEGER Operand1)
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{
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|
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switch (Opcode)
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{
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case AML_ADD_OP: /* Add (Operand0, Operand1, Result) */
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return (Operand0 + Operand1);
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case AML_BIT_AND_OP: /* And (Operand0, Operand1, Result) */
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return (Operand0 & Operand1);
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case AML_BIT_NAND_OP: /* NAnd (Operand0, Operand1, Result) */
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return (~(Operand0 & Operand1));
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case AML_BIT_OR_OP: /* Or (Operand0, Operand1, Result) */
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return (Operand0 | Operand1);
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case AML_BIT_NOR_OP: /* NOr (Operand0, Operand1, Result) */
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return (~(Operand0 | Operand1));
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case AML_BIT_XOR_OP: /* XOr (Operand0, Operand1, Result) */
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return (Operand0 ^ Operand1);
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case AML_MULTIPLY_OP: /* Multiply (Operand0, Operand1, Result) */
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return (Operand0 * Operand1);
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case AML_SHIFT_LEFT_OP: /* ShiftLeft (Operand, ShiftCount, Result) */
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return (Operand0 << Operand1);
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case AML_SHIFT_RIGHT_OP: /* ShiftRight (Operand, ShiftCount, Result) */
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return (Operand0 >> Operand1);
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case AML_SUBTRACT_OP: /* Subtract (Operand0, Operand1, Result) */
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return (Operand0 - Operand1);
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default:
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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: AcpiExDoLogicalOp
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*
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* PARAMETERS: Opcode - AML opcode
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* Operand0 - Integer operand #0
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* Operand1 - Integer operand #1
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*
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* RETURN: TRUE/FALSE result of the operation
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*
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* DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the
|
|
* functions here is to prevent a lot of pointer dereferencing
|
|
* to obtain the operands and to simplify the generation of the
|
|
* logical value.
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|
*
|
|
* Note: cleanest machine code seems to be produced by the code
|
|
* below, rather than using statements of the form:
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|
* Result = (Operand0 == Operand1);
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|
*
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|
******************************************************************************/
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|
|
|
BOOLEAN
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|
AcpiExDoLogicalOp (
|
|
UINT16 Opcode,
|
|
ACPI_INTEGER Operand0,
|
|
ACPI_INTEGER Operand1)
|
|
{
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|
|
|
|
|
switch (Opcode)
|
|
{
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|
|
|
case AML_LAND_OP: /* LAnd (Operand0, Operand1) */
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|
|
|
if (Operand0 && Operand1)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */
|
|
|
|
if (Operand0 == Operand1)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */
|
|
|
|
if (Operand0 > Operand1)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_LLESS_OP: /* LLess (Operand0, Operand1) */
|
|
|
|
if (Operand0 < Operand1)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_LOR_OP: /* LOr (Operand0, Operand1) */
|
|
|
|
if (Operand0 || Operand1)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (FALSE);
|
|
}
|
|
|
|
|