/****************************************************************************** * * Module Name: nsxfname - Public interfaces to the ACPI subsystem * ACPI Namespace oriented interfaces * $Revision: 1.110 $ * *****************************************************************************/ /****************************************************************************** * * 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 * 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 __NSXFNAME_C__ #include "acpi.h" #include "acnamesp.h" #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME ("nsxfname") /****************************************************************************** * * FUNCTION: AcpiGetHandle * * PARAMETERS: Parent - Object to search under (search scope). * Pathname - Pointer to an asciiz string containing the * name * RetHandle - Where the return handle is returned * * RETURN: Status * * DESCRIPTION: This routine will search for a caller specified name in the * name space. The caller can restrict the search region by * specifying a non NULL parent. The parent value is itself a * namespace handle. * ******************************************************************************/ ACPI_STATUS AcpiGetHandle ( ACPI_HANDLE Parent, ACPI_STRING Pathname, ACPI_HANDLE *RetHandle) { ACPI_STATUS Status; ACPI_NAMESPACE_NODE *Node = NULL; ACPI_NAMESPACE_NODE *PrefixNode = NULL; ACPI_FUNCTION_ENTRY (); /* Parameter Validation */ if (!RetHandle || !Pathname) { return (AE_BAD_PARAMETER); } /* Convert a parent handle to a prefix node */ if (Parent) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } PrefixNode = AcpiNsMapHandleToNode (Parent); if (!PrefixNode) { (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return (AE_BAD_PARAMETER); } Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } } /* Special case for root, since we can't search for it */ if (ACPI_STRCMP (Pathname, ACPI_NS_ROOT_PATH) == 0) { *RetHandle = AcpiNsConvertEntryToHandle (AcpiGbl_RootNode); return (AE_OK); } /* * Find the Node and convert to a handle */ Status = AcpiNsGetNode (PrefixNode, Pathname, ACPI_NS_NO_UPSEARCH, &Node); *RetHandle = NULL; if (ACPI_SUCCESS (Status)) { *RetHandle = AcpiNsConvertEntryToHandle (Node); } return (Status); } ACPI_EXPORT_SYMBOL (AcpiGetHandle) /****************************************************************************** * * FUNCTION: AcpiGetName * * PARAMETERS: Handle - Handle to be converted to a pathname * NameType - Full pathname or single segment * Buffer - Buffer for returned path * * RETURN: Pointer to a string containing the fully qualified Name. * * DESCRIPTION: This routine returns the fully qualified name associated with * the Handle parameter. This and the AcpiPathnameToHandle are * complementary functions. * ******************************************************************************/ ACPI_STATUS AcpiGetName ( ACPI_HANDLE Handle, UINT32 NameType, ACPI_BUFFER *Buffer) { ACPI_STATUS Status; ACPI_NAMESPACE_NODE *Node; /* Parameter validation */ if (NameType > ACPI_NAME_TYPE_MAX) { return (AE_BAD_PARAMETER); } Status = AcpiUtValidateBuffer (Buffer); if (ACPI_FAILURE (Status)) { return (Status); } if (NameType == ACPI_FULL_PATHNAME) { /* Get the full pathname (From the namespace root) */ Status = AcpiNsHandleToPathname (Handle, Buffer); return (Status); } /* * Wants the single segment ACPI name. * Validate handle and convert to a namespace Node */ Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } Node = AcpiNsMapHandleToNode (Handle); if (!Node) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Validate/Allocate/Clear caller buffer */ Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } /* Just copy the ACPI name from the Node and zero terminate it */ ACPI_STRNCPY (Buffer->Pointer, AcpiUtGetNodeName (Node), ACPI_NAME_SIZE); ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0; Status = AE_OK; UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return (Status); } ACPI_EXPORT_SYMBOL (AcpiGetName) /****************************************************************************** * * FUNCTION: AcpiGetObjectInfo * * PARAMETERS: Handle - Object Handle * Buffer - Where the info is returned * * RETURN: Status * * DESCRIPTION: Returns information about an object as gleaned from the * namespace node and possibly by running several standard * control methods (Such as in the case of a device.) * ******************************************************************************/ ACPI_STATUS AcpiGetObjectInfo ( ACPI_HANDLE Handle, ACPI_BUFFER *Buffer) { ACPI_STATUS Status; ACPI_NAMESPACE_NODE *Node; ACPI_DEVICE_INFO *Info; ACPI_DEVICE_INFO *ReturnInfo; ACPI_COMPATIBLE_ID_LIST *CidList = NULL; ACPI_SIZE Size; /* Parameter validation */ if (!Handle || !Buffer) { return (AE_BAD_PARAMETER); } Status = AcpiUtValidateBuffer (Buffer); if (ACPI_FAILURE (Status)) { return (Status); } Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_INFO)); if (!Info) { return (AE_NO_MEMORY); } Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { goto Cleanup; } Node = AcpiNsMapHandleToNode (Handle); if (!Node) { (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); goto Cleanup; } /* Init return structure */ Size = sizeof (ACPI_DEVICE_INFO); Info->Type = Node->Type; Info->Name = Node->Name.Integer; Info->Valid = 0; Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* If not a device, we are all done */ if (Info->Type == ACPI_TYPE_DEVICE) { /* * Get extra info for ACPI Devices objects only: * Run the Device _HID, _UID, _CID, _STA, _ADR and _SxD methods. * * Note: none of these methods are required, so they may or may * not be present for this device. The Info->Valid bitfield is used * to indicate which methods were found and ran successfully. */ /* Execute the Device._HID method */ Status = AcpiUtExecute_HID (Node, &Info->HardwareId); if (ACPI_SUCCESS (Status)) { Info->Valid |= ACPI_VALID_HID; } /* Execute the Device._UID method */ Status = AcpiUtExecute_UID (Node, &Info->UniqueId); if (ACPI_SUCCESS (Status)) { Info->Valid |= ACPI_VALID_UID; } /* Execute the Device._CID method */ Status = AcpiUtExecute_CID (Node, &CidList); if (ACPI_SUCCESS (Status)) { Size += CidList->Size; Info->Valid |= ACPI_VALID_CID; } /* Execute the Device._STA method */ Status = AcpiUtExecute_STA (Node, &Info->CurrentStatus); if (ACPI_SUCCESS (Status)) { Info->Valid |= ACPI_VALID_STA; } /* Execute the Device._ADR method */ Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node, &Info->Address); if (ACPI_SUCCESS (Status)) { Info->Valid |= ACPI_VALID_ADR; } /* Execute the Device._SxD methods */ Status = AcpiUtExecute_Sxds (Node, Info->HighestDstates); if (ACPI_SUCCESS (Status)) { Info->Valid |= ACPI_VALID_SXDS; } } /* Validate/Allocate/Clear caller buffer */ Status = AcpiUtInitializeBuffer (Buffer, Size); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Populate the return buffer */ ReturnInfo = Buffer->Pointer; ACPI_MEMCPY (ReturnInfo, Info, sizeof (ACPI_DEVICE_INFO)); if (CidList) { ACPI_MEMCPY (&ReturnInfo->CompatibilityId, CidList, CidList->Size); } Cleanup: ACPI_FREE (Info); if (CidList) { ACPI_FREE (CidList); } return (Status); } ACPI_EXPORT_SYMBOL (AcpiGetObjectInfo)