394 lines
14 KiB
C
394 lines
14 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exresnte - AML Interpreter object resolution
|
|
* $Revision: 50 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, 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 __EXRESNTE_C__
|
|
|
|
#include "acpi.h"
|
|
#include "amlcode.h"
|
|
#include "acparser.h"
|
|
#include "acdispat.h"
|
|
#include "acinterp.h"
|
|
#include "acnamesp.h"
|
|
#include "actables.h"
|
|
#include "acevents.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME ("exresnte")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExResolveNodeToValue
|
|
*
|
|
* PARAMETERS: ObjectPtr - Pointer to a location that contains
|
|
* a pointer to a NS node, and will receive a
|
|
* pointer to the resolved object.
|
|
* WalkState - Current state. Valid only if executing AML
|
|
* code. NULL if simply resolving an object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Resolve a Namespace node to a valued object
|
|
*
|
|
* Note: for some of the data types, the pointer attached to the Node
|
|
* can be either a pointer to an actual internal object or a pointer into the
|
|
* AML stream itself. These types are currently:
|
|
*
|
|
* ACPI_TYPE_INTEGER
|
|
* ACPI_TYPE_STRING
|
|
* ACPI_TYPE_BUFFER
|
|
* ACPI_TYPE_MUTEX
|
|
* ACPI_TYPE_PACKAGE
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExResolveNodeToValue (
|
|
ACPI_NAMESPACE_NODE **ObjectPtr,
|
|
ACPI_WALK_STATE *WalkState)
|
|
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_OPERAND_OBJECT *SourceDesc;
|
|
ACPI_OPERAND_OBJECT *ObjDesc = NULL;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_OBJECT_TYPE EntryType;
|
|
ACPI_INTEGER TempVal;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExResolveNodeToValue");
|
|
|
|
|
|
/*
|
|
* The stack pointer points to a ACPI_NAMESPACE_NODE (Node). Get the
|
|
* object that is attached to the Node.
|
|
*/
|
|
Node = *ObjectPtr;
|
|
SourceDesc = AcpiNsGetAttachedObject (Node);
|
|
EntryType = AcpiNsGetType ((ACPI_HANDLE) Node);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Entry=%p SourceDesc=%p Type=%X\n",
|
|
Node, SourceDesc, EntryType));
|
|
|
|
/*
|
|
* Several object types require no further processing:
|
|
* 1) Devices rarely have an attached object, return the Node
|
|
* 2) Method locals and arguments have a pseudo-Node
|
|
*/
|
|
if (EntryType == ACPI_TYPE_DEVICE ||
|
|
(Node->Flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL)))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
if (!SourceDesc)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No object attached to node %p\n",
|
|
Node));
|
|
return_ACPI_STATUS (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
/*
|
|
* Action is based on the type of the Node, which indicates the type
|
|
* of the attached object or pointer
|
|
*/
|
|
switch (EntryType)
|
|
{
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
if (ACPI_TYPE_PACKAGE != SourceDesc->Common.Type)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Package, type %s\n",
|
|
AcpiUtGetTypeName (SourceDesc->Common.Type)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
ObjDesc = SourceDesc;
|
|
AcpiUtAddReference (ObjDesc);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
if (ACPI_TYPE_BUFFER != SourceDesc->Common.Type)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Buffer, type %s\n",
|
|
AcpiUtGetTypeName (SourceDesc->Common.Type)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
ObjDesc = SourceDesc;
|
|
AcpiUtAddReference (ObjDesc);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
if (ACPI_TYPE_STRING != SourceDesc->Common.Type)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a String, type %s\n",
|
|
AcpiUtGetTypeName (SourceDesc->Common.Type)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
ObjDesc = SourceDesc;
|
|
AcpiUtAddReference (ObjDesc);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
if (ACPI_TYPE_INTEGER != SourceDesc->Common.Type)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Integer, type %s\n",
|
|
AcpiUtGetTypeName (SourceDesc->Common.Type)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
ObjDesc = SourceDesc;
|
|
AcpiUtAddReference (ObjDesc);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
case INTERNAL_TYPE_REGION_FIELD:
|
|
case INTERNAL_TYPE_BANK_FIELD:
|
|
case INTERNAL_TYPE_INDEX_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "FieldRead Node=%p SourceDesc=%p Type=%X\n",
|
|
Node, SourceDesc, EntryType));
|
|
|
|
Status = AcpiExReadDataFromField (SourceDesc, &ObjDesc);
|
|
break;
|
|
|
|
/*
|
|
* For these objects, just return the object attached to the Node
|
|
*/
|
|
case ACPI_TYPE_MUTEX:
|
|
case ACPI_TYPE_METHOD:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_THERMAL:
|
|
case ACPI_TYPE_EVENT:
|
|
case ACPI_TYPE_REGION:
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
ObjDesc = SourceDesc;
|
|
AcpiUtAddReference (ObjDesc);
|
|
break;
|
|
|
|
|
|
/* TYPE_Any is untyped, and thus there is no object associated with it */
|
|
|
|
case ACPI_TYPE_ANY:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Untyped entry %p, no attached object!\n",
|
|
Node));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */
|
|
|
|
|
|
/*
|
|
* The only named references allowed are named constants
|
|
* e.g. -- Name (\OSFL, Ones)
|
|
*/
|
|
case INTERNAL_TYPE_REFERENCE:
|
|
|
|
switch (SourceDesc->Reference.Opcode)
|
|
{
|
|
|
|
case AML_ZERO_OP:
|
|
|
|
TempVal = 0;
|
|
break;
|
|
|
|
case AML_ONE_OP:
|
|
|
|
TempVal = 1;
|
|
break;
|
|
|
|
case AML_ONES_OP:
|
|
|
|
TempVal = ACPI_INTEGER_MAX;
|
|
break;
|
|
|
|
case AML_REVISION_OP:
|
|
|
|
TempVal = ACPI_CA_SUPPORT_LEVEL;
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported reference opcode %X\n",
|
|
SourceDesc->Reference.Opcode));
|
|
|
|
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
|
|
}
|
|
|
|
/* Create object for result */
|
|
|
|
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
ObjDesc->Integer.Value = TempVal;
|
|
|
|
/*
|
|
* Truncate value if we are executing from a 32-bit ACPI table
|
|
* AND actually executing AML code. If we are resolving
|
|
* an object in the namespace via an external call to the
|
|
* subsystem, we will have a null WalkState
|
|
*/
|
|
if (WalkState)
|
|
{
|
|
AcpiExTruncateFor32bitTable (ObjDesc, WalkState);
|
|
}
|
|
break;
|
|
|
|
|
|
/* Default case is for unknown types */
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Node %p - Unknown object type %X\n",
|
|
Node, EntryType));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
|
|
} /* switch (EntryType) */
|
|
|
|
|
|
/* Put the object descriptor on the stack */
|
|
|
|
*ObjectPtr = (void *) ObjDesc;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|