nsobject.c revision ae115bc77f6fcde83175c75b4206dc2e50747966
/*******************************************************************************
*
* Module Name: nsobject - Utilities for objects attached to namespace
* table entries
* $Revision: 1.97 $
*
******************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2006, 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
* 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
* 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
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* 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 __NSOBJECT_C__
#include "acpi.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME ("nsobject")
/*******************************************************************************
*
* FUNCTION: AcpiNsAttachObject
*
* PARAMETERS: Node - Parent Node
* Object - Object to be attached
* Type - Type of object, or ACPI_TYPE_ANY if not
* known
*
* RETURN: Status
*
* DESCRIPTION: Record the given object as the value associated with the
* name whose ACPI_HANDLE is passed. If Object is NULL
* and Type is ACPI_TYPE_ANY, set the name as having no value.
* Note: Future may require that the Node->Flags field be passed
* as a parameter.
*
* MUTEX: Assumes namespace is locked
*
******************************************************************************/
{
/*
* Parameter validation
*/
if (!Node)
{
/* Invalid handle */
}
{
/* Null object */
"Null object, but type not ACPI_TYPE_ANY"));
}
{
/* Not a name handle */
}
/* Check if this object is already attached */
{
"Obj %p already installed in NameObj %p\n",
}
/* If null object, we will just install it */
if (!Object)
{
}
/*
* If the source object is a namespace Node with an attached object,
* we will use that (attached) object
*/
{
/*
* Value passed is a name handle and that name has a
* non-null value. Use that name's value and type.
*/
}
/*
* Otherwise, we will use the parameter object, but we must type
* it first
*/
else
{
/* Use the given type */
ObjectType = Type;
}
/* Detach an existing attached object if present */
{
}
if (ObjDesc)
{
/*
* Must increment the new value's reference count
* (if it is an internal object)
*/
/*
* Handle objects with multiple descriptors - walk
* to the end of the descriptor list
*/
{
}
/* Install the object at the front of the object list */
}
}
/*******************************************************************************
*
* FUNCTION: AcpiNsDetachObject
*
* PARAMETERS: Node - A Namespace node whose object will be detached
*
* RETURN: None.
*
* if the object is an allocated object, it is freed.
* Otherwise, the field is simply cleared.
*
******************************************************************************/
void
{
if (!ObjDesc ||
{
}
/* Clear the entry in all cases */
{
{
}
}
/* Reset the node type to untyped */
/* Remove one reference on the object (and all subobjects) */
}
/*******************************************************************************
*
* FUNCTION: AcpiNsGetAttachedObject
*
* PARAMETERS: Node - Namespace node
*
* RETURN: Current value of the object field from the Node whose
* handle is passed
*
* DESCRIPTION: Obtain the object attached to a namespace node.
*
******************************************************************************/
{
if (!Node)
{
return_PTR (NULL);
}
{
return_PTR (NULL);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiNsGetSecondaryObject
*
* PARAMETERS: Node - Namespace node
*
* RETURN: Current value of the object field from the Node whose
* handle is passed.
*
* DESCRIPTION: Obtain a secondary object associated with a namespace node.
*
******************************************************************************/
{
if ((!ObjDesc) ||
{
return_PTR (NULL);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiNsAttachData
*
* PARAMETERS: Node - Namespace node
* Handler - Handler to be associated with the data
* Data - Data to be attached
*
* RETURN: Status
*
* DESCRIPTION: Low-level attach data. Create and attach a Data object.
*
******************************************************************************/
void *Data)
{
/* We only allow one attachment per handler */
PrevObjDesc = NULL;
while (ObjDesc)
{
{
return (AE_ALREADY_EXISTS);
}
}
/* Create an internal object for the data */
if (!DataDesc)
{
return (AE_NO_MEMORY);
}
/* Install the data object */
if (PrevObjDesc)
{
}
else
{
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsDetachData
*
* PARAMETERS: Node - Namespace node
* Handler - Handler associated with the data
*
* RETURN: Status
*
* DESCRIPTION: Low-level detach data. Delete the data node, but the caller
* is responsible for the actual data.
*
******************************************************************************/
{
PrevObjDesc = NULL;
while (ObjDesc)
{
{
if (PrevObjDesc)
{
}
else
{
}
return (AE_OK);
}
}
return (AE_NOT_FOUND);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsGetAttachedData
*
* PARAMETERS: Node - Namespace node
* Handler - Handler associated with the data
* Data - Where the data is returned
*
* RETURN: Status
*
* DESCRIPTION: Low level interface to obtain data previously associated with
* a namespace node.
*
******************************************************************************/
void **Data)
{
while (ObjDesc)
{
{
return (AE_OK);
}
}
return (AE_NOT_FOUND);
}