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NetBSD/sys/dev/acpi/acpica/Subsystem/dsobject.c

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/******************************************************************************
*
* Module Name: dsobject - Dispatcher object management routines
* $Revision: 1.3 $
*
*****************************************************************************/
/******************************************************************************
*
* 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.
*
*****************************************************************************/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dsobject.c,v 1.3 2002/06/15 01:47:15 thorpej Exp $");
#define __DSOBJECT_C__
#include "acpi.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dsobject")
/*******************************************************************************
*
* FUNCTION: AcpiDsInitOneObject
*
* PARAMETERS: ObjHandle - Node
* Level - Current nesting level
* Context - Points to a init info struct
* ReturnValue - Not used
*
* RETURN: Status
*
* DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
* within the namespace.
*
* Currently, the only objects that require initialization are:
* 1) Methods
* 2) Operation Regions
*
******************************************************************************/
ACPI_STATUS
AcpiDsInitOneObject (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue)
{
ACPI_OBJECT_TYPE Type;
ACPI_STATUS Status;
ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
ACPI_FUNCTION_NAME ("DsInitOneObject");
/*
* We are only interested in objects owned by the table that
* was just loaded
*/
if (((ACPI_NAMESPACE_NODE *) ObjHandle)->OwnerId !=
Info->TableDesc->TableId)
{
return (AE_OK);
}
Info->ObjectCount++;
/* And even then, we are only interested in a few object types */
Type = AcpiNsGetType (ObjHandle);
switch (Type)
{
case ACPI_TYPE_REGION:
Status = AcpiDsInitializeRegion (ObjHandle);
if (ACPI_FAILURE (Status))
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region %p [%4.4s] - Init failure, %s\n",
ObjHandle, ((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii,
AcpiFormatException (Status)));
}
Info->OpRegionCount++;
break;
case ACPI_TYPE_METHOD:
Info->MethodCount++;
if (!(AcpiDbgLevel & ACPI_LV_INIT))
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "."));
}
/*
* Set the execution data width (32 or 64) based upon the
* revision number of the parent ACPI table.
* TBD: This is really for possible future support of integer width
* on a per-table basis. Currently, we just use a global for the width.
*/
if (Info->TableDesc->Pointer->Revision == 1)
{
((ACPI_NAMESPACE_NODE *) ObjHandle)->Flags |= ANOBJ_DATA_WIDTH_32;
}
/*
* Always parse methods to detect errors, we may delete
* the parse tree below
*/
Status = AcpiDsParseMethod (ObjHandle);
if (ACPI_FAILURE (Status))
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",
ObjHandle, ((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Ascii,
AcpiFormatException (Status)));
/* This parse failed, but we will continue parsing more methods */
break;
}
/*
* Delete the parse tree. We simple re-parse the method
* for every execution since there isn't much overhead
*/
AcpiNsDeleteNamespaceSubtree (ObjHandle);
AcpiNsDeleteNamespaceByOwner (((ACPI_NAMESPACE_NODE *) ObjHandle)->Object->Method.OwningId);
break;
case ACPI_TYPE_DEVICE:
Info->DeviceCount++;
break;
default:
break;
}
/*
* We ignore errors from above, and always return OK, since
* we don't want to abort the walk on a single error.
*/
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsInitializeObjects
*
* PARAMETERS: TableDesc - Descriptor for parent ACPI table
* StartNode - Root of subtree to be initialized.
*
* RETURN: Status
*
* DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
* necessary initialization on the objects found therein
*
******************************************************************************/
ACPI_STATUS
AcpiDsInitializeObjects (
ACPI_TABLE_DESC *TableDesc,
ACPI_NAMESPACE_NODE *StartNode)
{
ACPI_STATUS Status;
ACPI_INIT_WALK_INFO Info;
ACPI_FUNCTION_TRACE ("DsInitializeObjects");
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"**** Starting initialization of namespace objects ****\n"));
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "Parsing Methods:"));
Info.MethodCount = 0;
Info.OpRegionCount = 0;
Info.ObjectCount = 0;
Info.DeviceCount = 0;
Info.TableDesc = TableDesc;
/* Walk entire namespace from the supplied root */
Status = AcpiWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
AcpiDsInitOneObject, &Info, NULL);
if (ACPI_FAILURE (Status))
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed, %s\n",
AcpiFormatException (Status)));
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
"\nTable [%4.4s] - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
TableDesc->Pointer->Signature, Info.ObjectCount,
Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"%hd Methods, %hd Regions\n", Info.MethodCount, Info.OpRegionCount));
return_ACPI_STATUS (AE_OK);
}
/*****************************************************************************
*
* FUNCTION: AcpiDsInitObjectFromOp
*
* PARAMETERS: WalkState - Current walk state
* Op - Parser op used to init the internal object
* Opcode - AML opcode associated with the object
* RetObjDesc - Namespace object to be initialized
*
* RETURN: Status
*
* DESCRIPTION: Initialize a namespace object from a parser Op and its
* associated arguments. The namespace object is a more compact
* representation of the Op and its arguments.
*
****************************************************************************/
ACPI_STATUS
AcpiDsInitObjectFromOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
UINT16 Opcode,
ACPI_OPERAND_OBJECT **RetObjDesc)
{
const ACPI_OPCODE_INFO *OpInfo;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE ("DsInitObjectFromOp");
ObjDesc = *RetObjDesc;
OpInfo = AcpiPsGetOpcodeInfo (Opcode);
if (OpInfo->Class == AML_CLASS_UNKNOWN)
{
/* Unknown opcode */
return_ACPI_STATUS (AE_TYPE);
}
/* Perform per-object initialization */
switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
{
case ACPI_TYPE_BUFFER:
/*
* Defer evaluation of Buffer TermArg operand
*/
ObjDesc->Buffer.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
ObjDesc->Buffer.AmlStart = Op->Named.Data;
ObjDesc->Buffer.AmlLength = Op->Named.Length;
break;
case ACPI_TYPE_PACKAGE:
/*
* Defer evaluation of Package TermArg operand
*/
ObjDesc->Package.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
ObjDesc->Package.AmlStart = Op->Named.Data;
ObjDesc->Package.AmlLength = Op->Named.Length;
break;
case ACPI_TYPE_INTEGER:
switch (OpInfo->Type)
{
case AML_TYPE_CONSTANT:
/*
* Resolve AML Constants here - AND ONLY HERE!
* All constants are integers.
* We mark the integer with a flag that indicates that it started life
* as a constant -- so that stores to constants will perform as expected (noop).
* (ZeroOp is used as a placeholder for optional target operands.)
*/
ObjDesc->Common.Flags = AOPOBJ_AML_CONSTANT;
switch (Opcode)
{
case AML_ZERO_OP:
ObjDesc->Integer.Value = 0;
break;
case AML_ONE_OP:
ObjDesc->Integer.Value = 1;
break;
case AML_ONES_OP:
ObjDesc->Integer.Value = ACPI_INTEGER_MAX;
/* Truncate value if we are executing from a 32-bit ACPI table */
AcpiExTruncateFor32bitTable (ObjDesc);
break;
case AML_REVISION_OP:
ObjDesc->Integer.Value = ACPI_CA_SUPPORT_LEVEL;
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown constant opcode %X\n", Opcode));
Status = AE_AML_OPERAND_TYPE;
break;
}
break;
case AML_TYPE_LITERAL:
ObjDesc->Integer.Value = Op->Common.Value.Integer;
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Integer type %X\n", OpInfo->Type));
Status = AE_AML_OPERAND_TYPE;
break;
}
break;
case ACPI_TYPE_STRING:
ObjDesc->String.Pointer = Op->Common.Value.String;
ObjDesc->String.Length = ACPI_STRLEN (Op->Common.Value.String);
/*
* The string is contained in the ACPI table, don't ever try
* to delete it
*/
ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER;
break;
case ACPI_TYPE_METHOD:
break;
case INTERNAL_TYPE_REFERENCE:
switch (OpInfo->Type)
{
case AML_TYPE_LOCAL_VARIABLE:
/* Split the opcode into a base opcode + offset */
ObjDesc->Reference.Opcode = AML_LOCAL_OP;
ObjDesc->Reference.Offset = Opcode - AML_LOCAL_OP;
break;
case AML_TYPE_METHOD_ARGUMENT:
/* Split the opcode into a base opcode + offset */
ObjDesc->Reference.Opcode = AML_ARG_OP;
ObjDesc->Reference.Offset = Opcode - AML_ARG_OP;
break;
default: /* Other literals, etc.. */
if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
{
/* Node was saved in Op */
ObjDesc->Reference.Node = Op->Common.Node;
}
ObjDesc->Reference.Opcode = Opcode;
break;
}
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unimplemented data type: %X\n",
ACPI_GET_OBJECT_TYPE (ObjDesc)));
Status = AE_AML_OPERAND_TYPE;
break;
}
return_ACPI_STATUS (Status);
}
/*****************************************************************************
*
* FUNCTION: AcpiDsBuildInternalObject
*
* PARAMETERS: WalkState - Current walk state
* Op - Parser object to be translated
* ObjDescPtr - Where the ACPI internal object is returned
*
* RETURN: Status
*
* DESCRIPTION: Translate a parser Op object to the equivalent namespace object
* Simple objects are any objects other than a package object!
*
****************************************************************************/
ACPI_STATUS
AcpiDsBuildInternalObject (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
ACPI_OPERAND_OBJECT **ObjDescPtr)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
char *Name;
ACPI_FUNCTION_TRACE ("DsBuildInternalObject");
if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
{
/*
* This is an named object reference. If this name was
* previously looked up in the namespace, it was stored in this op.
* Otherwise, go ahead and look it up now
*/
if (!Op->Common.Node)
{
Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
(ACPI_NAMESPACE_NODE **) &(Op->Common.Node));
if (ACPI_FAILURE (Status))
{
if (Status == AE_NOT_FOUND)
{
Name = NULL;
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Common.Value.String, NULL, &Name);
if (ACPI_SUCCESS (Status))
{
ACPI_REPORT_WARNING (("Reference %s at AML %X not found\n",
Name, Op->Common.AmlOffset));
ACPI_MEM_FREE (Name);
}
else
{
ACPI_REPORT_WARNING (("Reference %s at AML %X not found\n",
Op->Common.Value.String, Op->Common.AmlOffset));
}
*ObjDescPtr = NULL;
}
else
{
return_ACPI_STATUS (Status);
}
}
}
}
/* Create and init the internal ACPI object */
ObjDesc = AcpiUtCreateInternalObject ((AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode))->ObjectType);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Status = AcpiDsInitObjectFromOp (WalkState, Op, Op->Common.AmlOpcode, &ObjDesc);
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
*ObjDescPtr = ObjDesc;
return_ACPI_STATUS (AE_OK);
}
/*****************************************************************************
*
* FUNCTION: AcpiDsBuildInternalBufferObj
*
* PARAMETERS: WalkState - Current walk state
* Op - Parser object to be translated
* BufferLength - Length of the buffer
* ObjDescPtr - Where the ACPI internal object is returned
*
* RETURN: Status
*
* DESCRIPTION: Translate a parser Op package object to the equivalent
* namespace object
*
****************************************************************************/
ACPI_STATUS
AcpiDsBuildInternalBufferObj (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
UINT32 BufferLength,
ACPI_OPERAND_OBJECT **ObjDescPtr)
{
ACPI_PARSE_OBJECT *Arg;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_PARSE_OBJECT *ByteList;
UINT32 ByteListLength = 0;
ACPI_FUNCTION_TRACE ("DsBuildInternalBufferObj");
ObjDesc = *ObjDescPtr;
if (ObjDesc)
{
/*
* We are evaluating a Named buffer object "Name (xxxx, Buffer)".
* The buffer object already exists (from the NS node)
*/
}
else
{
/* Create a new buffer object */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
*ObjDescPtr = ObjDesc;
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
}
/*
* Second arg is the buffer data (optional) ByteList can be either
* individual bytes or a string initializer. In either case, a
* ByteList appears in the AML.
*/
Arg = Op->Common.Value.Arg; /* skip first arg */
ByteList = Arg->Named.Next;
if (ByteList)
{
if (ByteList->Common.AmlOpcode != AML_INT_BYTELIST_OP)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Expecting bytelist, got AML opcode %X in op %p\n",
ByteList->Common.AmlOpcode, ByteList));
AcpiUtRemoveReference (ObjDesc);
return (AE_TYPE);
}
ByteListLength = ByteList->Common.Value.Integer32;
}
/*
* The buffer length (number of bytes) will be the larger of:
* 1) The specified buffer length and
* 2) The length of the initializer byte list
*/
ObjDesc->Buffer.Length = BufferLength;
if (ByteListLength > BufferLength)
{
ObjDesc->Buffer.Length = ByteListLength;
}
/* Allocate the buffer */
if (ObjDesc->Buffer.Length == 0)
{
ObjDesc->Buffer.Pointer = NULL;
ACPI_REPORT_WARNING (("Buffer created with zero length in AML\n"));
return_ACPI_STATUS (AE_OK);
}
ObjDesc->Buffer.Pointer = ACPI_MEM_CALLOCATE (
ObjDesc->Buffer.Length);
if (!ObjDesc->Buffer.Pointer)
{
AcpiUtDeleteObjectDesc (ObjDesc);
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize buffer from the ByteList (if present) */
if (ByteList)
{
ACPI_MEMCPY (ObjDesc->Buffer.Pointer, ByteList->Named.Data,
ByteListLength);
}
ObjDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
Op->Common.Node = (ACPI_NAMESPACE_NODE *) ObjDesc;
return_ACPI_STATUS (AE_OK);
}
/*****************************************************************************
*
* FUNCTION: AcpiDsBuildInternalPackageObj
*
* PARAMETERS: WalkState - Current walk state
* Op - Parser object to be translated
* PackageLength - Number of elements in the package
* ObjDescPtr - Where the ACPI internal object is returned
*
* RETURN: Status
*
* DESCRIPTION: Translate a parser Op package object to the equivalent
* namespace object
*
****************************************************************************/
ACPI_STATUS
AcpiDsBuildInternalPackageObj (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
UINT32 PackageLength,
ACPI_OPERAND_OBJECT **ObjDescPtr)
{
ACPI_PARSE_OBJECT *Arg;
ACPI_PARSE_OBJECT *Parent;
ACPI_OPERAND_OBJECT *ObjDesc = NULL;
UINT32 PackageListLength;
ACPI_STATUS Status = AE_OK;
UINT32 i;
ACPI_FUNCTION_TRACE ("DsBuildInternalPackageObj");
/* Find the parent of a possibly nested package */
Parent = Op->Common.Parent;
while ((Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
(Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))
{
Parent = Parent->Common.Parent;
}
ObjDesc = *ObjDescPtr;
if (ObjDesc)
{
/*
* We are evaluating a Named package object "Name (xxxx, Package)".
* Get the existing package object from the NS node
*/
}
else
{
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
*ObjDescPtr = ObjDesc;
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
ObjDesc->Package.Node = Parent->Common.Node;
}
ObjDesc->Package.Count = PackageLength;
/* Count the number of items in the package list */
PackageListLength = 0;
Arg = Op->Common.Value.Arg;
Arg = Arg->Common.Next;
while (Arg)
{
PackageListLength++;
Arg = Arg->Common.Next;
}
/*
* The package length (number of elements) will be the greater
* of the specified length and the length of the initializer list
*/
if (PackageListLength > PackageLength)
{
ObjDesc->Package.Count = PackageListLength;
}
/*
* Allocate the pointer array (array of pointers to the
* individual objects). Add an extra pointer slot so
* that the list is always null terminated.
*/
ObjDesc->Package.Elements = ACPI_MEM_CALLOCATE (
((ACPI_SIZE) ObjDesc->Package.Count + 1) * sizeof (void *));
if (!ObjDesc->Package.Elements)
{
AcpiUtDeleteObjectDesc (ObjDesc);
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Now init the elements of the package
*/
i = 0;
Arg = Op->Common.Value.Arg;
Arg = Arg->Common.Next;
while (Arg)
{
if (Arg->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
{
/* Object (package or buffer) is already built */
ObjDesc->Package.Elements[i] = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Arg->Common.Node);
}
else
{
Status = AcpiDsBuildInternalObject (WalkState, Arg,
&ObjDesc->Package.Elements[i]);
}
i++;
Arg = Arg->Common.Next;
}
ObjDesc->Package.Flags |= AOPOBJ_DATA_VALID;
Op->Common.Node = (ACPI_NAMESPACE_NODE *) ObjDesc;
return_ACPI_STATUS (Status);
}
/*****************************************************************************
*
* FUNCTION: AcpiDsCreateNode
*
* PARAMETERS: WalkState - Current walk state
* Node - NS Node to be initialized
* Op - Parser object to be translated
*
* RETURN: Status
*
* DESCRIPTION: Create the object to be associated with a namespace node
*
****************************************************************************/
ACPI_STATUS
AcpiDsCreateNode (
ACPI_WALK_STATE *WalkState,
ACPI_NAMESPACE_NODE *Node,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE_PTR ("DsCreateNode", Op);
/*
* Because of the execution pass through the non-control-method
* parts of the table, we can arrive here twice. Only init
* the named object node the first time through
*/
if (AcpiNsGetAttachedObject (Node))
{
return_ACPI_STATUS (AE_OK);
}
if (!Op->Common.Value.Arg)
{
/* No arguments, there is nothing to do */
return_ACPI_STATUS (AE_OK);
}
/* Build an internal object for the argument(s) */
Status = AcpiDsBuildInternalObject (WalkState, Op->Common.Value.Arg, &ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Re-type the object according to it's argument */
Node->Type = ACPI_GET_OBJECT_TYPE (ObjDesc);
/* Attach obj to node */
Status = AcpiNsAttachObject (Node, ObjDesc, Node->Type);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
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