| 0,0 → 1,357 |
|---|
| /******************************************************************************* |
| * |
| * Module Name: nsxfobj - Public interfaces to the ACPI subsystem |
| * ACPI Object oriented interfaces |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 __NSXFOBJ_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acnamesp.h" |
| |
| |
| #define _COMPONENT ACPI_NAMESPACE |
| ACPI_MODULE_NAME ("nsxfobj") |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetType |
| * |
| * PARAMETERS: Handle - Handle of object whose type is desired |
| * RetType - Where the type will be placed |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This routine returns the type associatd with a particular handle |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetType ( |
| ACPI_HANDLE Handle, |
| ACPI_OBJECT_TYPE *RetType) |
| { |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_STATUS Status; |
| |
| |
| /* Parameter Validation */ |
| |
| if (!RetType) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| /* |
| * Special case for the predefined Root Node |
| * (return type ANY) |
| */ |
| if (Handle == ACPI_ROOT_OBJECT) |
| { |
| *RetType = ACPI_TYPE_ANY; |
| return (AE_OK); |
| } |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Convert and validate the handle */ |
| |
| Node = AcpiNsValidateHandle (Handle); |
| if (!Node) |
| { |
| (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| return (AE_BAD_PARAMETER); |
| } |
| |
| *RetType = Node->Type; |
| |
| |
| Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| return (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetType) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetParent |
| * |
| * PARAMETERS: Handle - Handle of object whose parent is desired |
| * RetHandle - Where the parent handle will be placed |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Returns a handle to the parent of the object represented by |
| * Handle. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetParent ( |
| ACPI_HANDLE Handle, |
| ACPI_HANDLE *RetHandle) |
| { |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_NAMESPACE_NODE *ParentNode; |
| ACPI_STATUS Status; |
| |
| |
| if (!RetHandle) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| /* Special case for the predefined Root Node (no parent) */ |
| |
| if (Handle == ACPI_ROOT_OBJECT) |
| { |
| return (AE_NULL_ENTRY); |
| } |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Convert and validate the handle */ |
| |
| Node = AcpiNsValidateHandle (Handle); |
| if (!Node) |
| { |
| Status = AE_BAD_PARAMETER; |
| goto UnlockAndExit; |
| } |
| |
| /* Get the parent entry */ |
| |
| ParentNode = Node->Parent; |
| *RetHandle = ACPI_CAST_PTR (ACPI_HANDLE, ParentNode); |
| |
| /* Return exception if parent is null */ |
| |
| if (!ParentNode) |
| { |
| Status = AE_NULL_ENTRY; |
| } |
| |
| |
| UnlockAndExit: |
| |
| (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| return (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetParent) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetNextObject |
| * |
| * PARAMETERS: Type - Type of object to be searched for |
| * Parent - Parent object whose children we are getting |
| * LastChild - Previous child that was found. |
| * The NEXT child will be returned |
| * RetHandle - Where handle to the next object is placed |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Return the next peer object within the namespace. If Handle is |
| * valid, Scope is ignored. Otherwise, the first object within |
| * Scope is returned. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetNextObject ( |
| ACPI_OBJECT_TYPE Type, |
| ACPI_HANDLE Parent, |
| ACPI_HANDLE Child, |
| ACPI_HANDLE *RetHandle) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_NAMESPACE_NODE *ParentNode = NULL; |
| ACPI_NAMESPACE_NODE *ChildNode = NULL; |
| |
| |
| /* Parameter validation */ |
| |
| if (Type > ACPI_TYPE_EXTERNAL_MAX) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* If null handle, use the parent */ |
| |
| if (!Child) |
| { |
| /* Start search at the beginning of the specified scope */ |
| |
| ParentNode = AcpiNsValidateHandle (Parent); |
| if (!ParentNode) |
| { |
| Status = AE_BAD_PARAMETER; |
| goto UnlockAndExit; |
| } |
| } |
| else |
| { |
| /* Non-null handle, ignore the parent */ |
| /* Convert and validate the handle */ |
| |
| ChildNode = AcpiNsValidateHandle (Child); |
| if (!ChildNode) |
| { |
| Status = AE_BAD_PARAMETER; |
| goto UnlockAndExit; |
| } |
| } |
| |
| /* Internal function does the real work */ |
| |
| Node = AcpiNsGetNextNodeTyped (Type, ParentNode, ChildNode); |
| if (!Node) |
| { |
| Status = AE_NOT_FOUND; |
| goto UnlockAndExit; |
| } |
| |
| if (RetHandle) |
| { |
| *RetHandle = ACPI_CAST_PTR (ACPI_HANDLE, Node); |
| } |
| |
| |
| UnlockAndExit: |
| |
| (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| return (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetNextObject) |
| |