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freebsd-dev/sys/contrib/dev/acpica/exmisc.c
Mike Smith 0065eb1222 Import the 20010518 Intel ACPI CA release. Note that Intel's directory layout 
keeps changing, so to reduce repository thrash everything has been moved into
a single directory.  (repo copy involved)
2001-05-29 19:52:40 +00:00

672 lines
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/******************************************************************************
*
* Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
* $Revision: 77 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __EXMISC_C__
#include "acpi.h"
#include "acparser.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acdispat.h"
#define _COMPONENT ACPI_EXECUTER
MODULE_NAME ("exmisc")
/*******************************************************************************
*
* FUNCTION: AcpiExFatal
*
* PARAMETERS: none
*
* RETURN: Status. If the OS returns from the OSD call, we just keep
* on going.
*
* DESCRIPTION: Execute Fatal operator
*
* ACPI SPECIFICATION REFERENCES:
* DefFatal := FatalOp FatalType FatalCode FatalArg
* FatalType := ByteData
* FatalCode := DWordData
* FatalArg := TermArg=>Integer
*
******************************************************************************/
ACPI_STATUS
AcpiExFatal (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *TypeDesc;
ACPI_OPERAND_OBJECT *CodeDesc;
ACPI_OPERAND_OBJECT *ArgDesc;
ACPI_STATUS Status;
FUNCTION_TRACE ("ExFatal");
/* Resolve operands */
Status = AcpiExResolveOperands (AML_FATAL_OP, WALK_OPERANDS, WalkState);
DUMP_OPERANDS (WALK_OPERANDS, IMODE_EXECUTE,
AcpiPsGetOpcodeName (AML_FATAL_OP),
3, "after AcpiExResolveOperands");
/* Get operands */
Status |= AcpiDsObjStackPopObject (&ArgDesc, WalkState);
Status |= AcpiDsObjStackPopObject (&CodeDesc, WalkState);
Status |= AcpiDsObjStackPopObject (&TypeDesc, WalkState);
if (ACPI_FAILURE (Status))
{
/* Invalid parameters on object stack */
DEBUG_PRINTP (ACPI_ERROR, ("bad operand(s) (Status=%X)\n",
Status));
goto Cleanup;
}
/* DefFatal := FatalOp FatalType FatalCode FatalArg */
DEBUG_PRINTP (ACPI_INFO,
("Type %x Code %x Arg %x <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
TypeDesc->Integer.Value, CodeDesc->Integer.Value, ArgDesc->Integer.Value));
/*
* TBD: [Unhandled] call OSD interface to notify OS of fatal error
* requiring shutdown!
*/
Cleanup:
/* Free the operands */
AcpiUtRemoveReference (ArgDesc);
AcpiUtRemoveReference (CodeDesc);
AcpiUtRemoveReference (TypeDesc);
/* If we get back from the OS call, we might as well keep going. */
REPORT_WARNING (("An AML \"Fatal\" Opcode (FatalOp) was executed\n"));
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExIndex
*
* PARAMETERS: none
*
* RETURN: Status
*
* DESCRIPTION: Execute Index operator
*
* ALLOCATION: Deletes one operand descriptor -- other remains on stack
*
* ACPI SPECIFICATION REFERENCES:
* DefIndex := IndexOp BuffPkgObj IndexValue Result
* IndexValue := TermArg=>Integer
* NameString := <RootChar NamePath> | <PrefixPath NamePath>
* Result := SuperName
* SuperName := NameString | ArgObj | LocalObj | DebugObj | DefIndex
* Local4Op | Local5Op | Local6Op | Local7Op
*
******************************************************************************/
ACPI_STATUS
AcpiExIndex (
ACPI_WALK_STATE *WalkState,
ACPI_OPERAND_OBJECT **ReturnDesc)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT *IdxDesc;
ACPI_OPERAND_OBJECT *ResDesc;
ACPI_OPERAND_OBJECT *RetDesc = NULL;
ACPI_OPERAND_OBJECT *TmpDesc;
ACPI_STATUS Status;
FUNCTION_TRACE ("ExIndex");
/* Resolve operands */
/* First operand can be either a package or a buffer */
Status = AcpiExResolveOperands (AML_INDEX_OP, WALK_OPERANDS, WalkState);
DUMP_OPERANDS (WALK_OPERANDS, IMODE_EXECUTE,
AcpiPsGetOpcodeName (AML_INDEX_OP),
3, "after AcpiExResolveOperands");
/* Get all operands */
Status |= AcpiDsObjStackPopObject (&ResDesc, WalkState);
Status |= AcpiDsObjStackPopObject (&IdxDesc, WalkState);
Status |= AcpiDsObjStackPopObject (&ObjDesc, WalkState);
if (ACPI_FAILURE (Status))
{
/* Invalid parameters on object stack */
DEBUG_PRINTP (ACPI_ERROR, ("bad operand(s) (Status=%X)\n",
Status));
goto Cleanup;
}
/* Create the internal return object */
RetDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REFERENCE);
if (!RetDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* At this point, the ObjDesc operand is either a Package or a Buffer
*/
if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE)
{
/* Object to be indexed is a Package */
if (IdxDesc->Integer.Value >= ObjDesc->Package.Count)
{
DEBUG_PRINTP (ACPI_ERROR, ("Index value beyond package end\n"));
Status = AE_AML_PACKAGE_LIMIT;
goto Cleanup;
}
if ((ResDesc->Common.Type == INTERNAL_TYPE_REFERENCE) &&
(ResDesc->Reference.Opcode == AML_ZERO_OP))
{
/*
* There is no actual result descriptor (the ZeroOp Result
* descriptor is a placeholder), so just delete the placeholder and
* return a reference to the package element
*/
AcpiUtRemoveReference (ResDesc);
}
else
{
/*
* Each element of the package is an internal object. Get the one
* we are after.
*/
TmpDesc = ObjDesc->Package.Elements[IdxDesc->Integer.Value];
RetDesc->Reference.Opcode = AML_INDEX_OP;
RetDesc->Reference.TargetType = TmpDesc->Common.Type;
RetDesc->Reference.Object = TmpDesc;
Status = AcpiExStore (RetDesc, ResDesc, WalkState);
RetDesc->Reference.Object = NULL;
}
/*
* The local return object must always be a reference to the package element,
* not the element itself.
*/
RetDesc->Reference.Opcode = AML_INDEX_OP;
RetDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
RetDesc->Reference.Where = &ObjDesc->Package.Elements[IdxDesc->Integer.Value];
}
else
{
/* Object to be indexed is a Buffer */
if (IdxDesc->Integer.Value >= ObjDesc->Buffer.Length)
{
DEBUG_PRINTP (ACPI_ERROR, ("Index value beyond end of buffer\n"));
Status = AE_AML_BUFFER_LIMIT;
goto Cleanup;
}
RetDesc->Reference.Opcode = AML_INDEX_OP;
RetDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
RetDesc->Reference.Object = ObjDesc;
RetDesc->Reference.Offset = (UINT32) IdxDesc->Integer.Value;
Status = AcpiExStore (RetDesc, ResDesc, WalkState);
}
Cleanup:
/* Always delete operands */
AcpiUtRemoveReference (ObjDesc);
AcpiUtRemoveReference (IdxDesc);
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ResDesc);
if (RetDesc)
{
AcpiUtRemoveReference (RetDesc);
RetDesc = NULL;
}
}
/* Set the return object and exit */
*ReturnDesc = RetDesc;
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExMatch
*
* PARAMETERS: none
*
* RETURN: Status
*
* DESCRIPTION: Execute Match operator
*
* ACPI SPECIFICATION REFERENCES:
* DefMatch := MatchOp SearchPkg Opcode1 Operand1
* Opcode2 Operand2 StartIndex
* Opcode1 := ByteData: MTR, MEQ, MLE, MLT, MGE, or MGT
* Opcode2 := ByteData: MTR, MEQ, MLE, MLT, MGE, or MGT
* Operand1 := TermArg=>Integer
* Operand2 := TermArg=>Integer
* SearchPkg := TermArg=>PackageObject
* StartIndex := TermArg=>Integer
*
******************************************************************************/
ACPI_STATUS
AcpiExMatch (
ACPI_WALK_STATE *WalkState,
ACPI_OPERAND_OBJECT **ReturnDesc)
{
ACPI_OPERAND_OBJECT *PkgDesc;
ACPI_OPERAND_OBJECT *Op1Desc;
ACPI_OPERAND_OBJECT *V1Desc;
ACPI_OPERAND_OBJECT *Op2Desc;
ACPI_OPERAND_OBJECT *V2Desc;
ACPI_OPERAND_OBJECT *StartDesc;
ACPI_OPERAND_OBJECT *RetDesc = NULL;
ACPI_STATUS Status;
UINT32 Index;
UINT32 MatchValue = (UINT32) -1;
FUNCTION_TRACE ("ExMatch");
/* Resolve all operands */
Status = AcpiExResolveOperands (AML_MATCH_OP, WALK_OPERANDS, WalkState);
DUMP_OPERANDS (WALK_OPERANDS, IMODE_EXECUTE,
AcpiPsGetOpcodeName (AML_MATCH_OP),
6, "after AcpiExResolveOperands");
/* Get all operands */
Status |= AcpiDsObjStackPopObject (&StartDesc, WalkState);
Status |= AcpiDsObjStackPopObject (&V2Desc, WalkState);
Status |= AcpiDsObjStackPopObject (&Op2Desc, WalkState);
Status |= AcpiDsObjStackPopObject (&V1Desc, WalkState);
Status |= AcpiDsObjStackPopObject (&Op1Desc, WalkState);
Status |= AcpiDsObjStackPopObject (&PkgDesc, WalkState);
if (ACPI_FAILURE (Status))
{
/* Invalid parameters on object stack */
DEBUG_PRINTP (ACPI_ERROR, ("bad operand(s) (Status=%X)\n",
Status));
goto Cleanup;
}
/* Validate match comparison sub-opcodes */
if ((Op1Desc->Integer.Value > MAX_MATCH_OPERATOR) ||
(Op2Desc->Integer.Value > MAX_MATCH_OPERATOR))
{
DEBUG_PRINTP (ACPI_ERROR, ("operation encoding out of range\n"));
Status = AE_AML_OPERAND_VALUE;
goto Cleanup;
}
Index = (UINT32) StartDesc->Integer.Value;
if (Index >= (UINT32) PkgDesc->Package.Count)
{
DEBUG_PRINTP (ACPI_ERROR, ("Start position value out of range\n"));
Status = AE_AML_PACKAGE_LIMIT;
goto Cleanup;
}
RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!RetDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Examine each element until a match is found. Within the loop,
* "continue" signifies that the current element does not match
* and the next should be examined.
* Upon finding a match, the loop will terminate via "break" at
* the bottom. If it terminates "normally", MatchValue will be -1
* (its initial value) indicating that no match was found. When
* returned as a Number, this will produce the Ones value as specified.
*/
for ( ; Index < PkgDesc->Package.Count; ++Index)
{
/*
* Treat any NULL or non-numeric elements as non-matching.
* TBD [Unhandled] - if an element is a Name,
* should we examine its value?
*/
if (!PkgDesc->Package.Elements[Index] ||
ACPI_TYPE_INTEGER != PkgDesc->Package.Elements[Index]->Common.Type)
{
continue;
}
/*
* Within these switch statements:
* "break" (exit from the switch) signifies a match;
* "continue" (proceed to next iteration of enclosing
* "for" loop) signifies a non-match.
*/
switch (Op1Desc->Integer.Value)
{
case MATCH_MTR: /* always true */
break;
case MATCH_MEQ: /* true if equal */
if (PkgDesc->Package.Elements[Index]->Integer.Value
!= V1Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MLE: /* true if less than or equal */
if (PkgDesc->Package.Elements[Index]->Integer.Value
> V1Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MLT: /* true if less than */
if (PkgDesc->Package.Elements[Index]->Integer.Value
>= V1Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MGE: /* true if greater than or equal */
if (PkgDesc->Package.Elements[Index]->Integer.Value
< V1Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MGT: /* true if greater than */
if (PkgDesc->Package.Elements[Index]->Integer.Value
<= V1Desc->Integer.Value)
{
continue;
}
break;
default: /* undefined */
continue;
}
switch(Op2Desc->Integer.Value)
{
case MATCH_MTR:
break;
case MATCH_MEQ:
if (PkgDesc->Package.Elements[Index]->Integer.Value
!= V2Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MLE:
if (PkgDesc->Package.Elements[Index]->Integer.Value
> V2Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MLT:
if (PkgDesc->Package.Elements[Index]->Integer.Value
>= V2Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MGE:
if (PkgDesc->Package.Elements[Index]->Integer.Value
< V2Desc->Integer.Value)
{
continue;
}
break;
case MATCH_MGT:
if (PkgDesc->Package.Elements[Index]->Integer.Value
<= V2Desc->Integer.Value)
{
continue;
}
break;
default:
continue;
}
/* Match found: exit from loop */
MatchValue = Index;
break;
}
/* MatchValue is the return value */
RetDesc->Integer.Value = MatchValue;
Cleanup:
/* Free the operands */
AcpiUtRemoveReference (StartDesc);
AcpiUtRemoveReference (V2Desc);
AcpiUtRemoveReference (Op2Desc);
AcpiUtRemoveReference (V1Desc);
AcpiUtRemoveReference (Op1Desc);
AcpiUtRemoveReference (PkgDesc);
/* Delete return object on error */
if (ACPI_FAILURE (Status) &&
(RetDesc))
{
AcpiUtRemoveReference (RetDesc);
RetDesc = NULL;
}
/* Set the return object and exit */
*ReturnDesc = RetDesc;
return_ACPI_STATUS (Status);
}
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