diff options
Diffstat (limited to 'sys/contrib/dev/acpica/nsxfeval.c')
| -rw-r--r-- | sys/contrib/dev/acpica/nsxfeval.c | 891 |
1 files changed, 0 insertions, 891 deletions
diff --git a/sys/contrib/dev/acpica/nsxfeval.c b/sys/contrib/dev/acpica/nsxfeval.c deleted file mode 100644 index 617002c..0000000 --- a/sys/contrib/dev/acpica/nsxfeval.c +++ /dev/null @@ -1,891 +0,0 @@ -/******************************************************************************* - * - * Module Name: nsxfeval - Public interfaces to the ACPI subsystem - * ACPI Object evaluation interfaces - * $Revision: 1.30 $ - * - ******************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, 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 __NSXFEVAL_C__ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acnamesp.h> -#include <contrib/dev/acpica/acinterp.h> - - -#define _COMPONENT ACPI_NAMESPACE - ACPI_MODULE_NAME ("nsxfeval") - - -/******************************************************************************* - * - * FUNCTION: AcpiEvaluateObjectTyped - * - * PARAMETERS: Handle - Object handle (optional) - * Pathname - Object pathname (optional) - * ExternalParams - List of parameters to pass to method, - * terminated by NULL. May be NULL - * if no parameters are being passed. - * ReturnBuffer - Where to put method's return value (if - * any). If NULL, no value is returned. - * ReturnType - Expected type of return object - * - * RETURN: Status - * - * DESCRIPTION: Find and evaluate the given object, passing the given - * parameters if necessary. One of "Handle" or "Pathname" must - * be valid (non-null) - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvaluateObjectTyped ( - ACPI_HANDLE Handle, - ACPI_STRING Pathname, - ACPI_OBJECT_LIST *ExternalParams, - ACPI_BUFFER *ReturnBuffer, - ACPI_OBJECT_TYPE ReturnType) -{ - ACPI_STATUS Status; - BOOLEAN MustFree = FALSE; - - - ACPI_FUNCTION_TRACE (AcpiEvaluateObjectTyped); - - - /* Return buffer must be valid */ - - if (!ReturnBuffer) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - if (ReturnBuffer->Length == ACPI_ALLOCATE_BUFFER) - { - MustFree = TRUE; - } - - /* Evaluate the object */ - - Status = AcpiEvaluateObject (Handle, Pathname, ExternalParams, ReturnBuffer); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Type ANY means "don't care" */ - - if (ReturnType == ACPI_TYPE_ANY) - { - return_ACPI_STATUS (AE_OK); - } - - if (ReturnBuffer->Length == 0) - { - /* Error because caller specifically asked for a return value */ - - ACPI_ERROR ((AE_INFO, "No return value")); - return_ACPI_STATUS (AE_NULL_OBJECT); - } - - /* Examine the object type returned from EvaluateObject */ - - if (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type == ReturnType) - { - return_ACPI_STATUS (AE_OK); - } - - /* Return object type does not match requested type */ - - ACPI_ERROR ((AE_INFO, - "Incorrect return type [%s] requested [%s]", - AcpiUtGetTypeName (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type), - AcpiUtGetTypeName (ReturnType))); - - if (MustFree) - { - /* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */ - - AcpiOsFree (ReturnBuffer->Pointer); - ReturnBuffer->Pointer = NULL; - } - - ReturnBuffer->Length = 0; - return_ACPI_STATUS (AE_TYPE); -} - -ACPI_EXPORT_SYMBOL (AcpiEvaluateObjectTyped) - - -/******************************************************************************* - * - * FUNCTION: AcpiEvaluateObject - * - * PARAMETERS: Handle - Object handle (optional) - * Pathname - Object pathname (optional) - * ExternalParams - List of parameters to pass to method, - * terminated by NULL. May be NULL - * if no parameters are being passed. - * ReturnBuffer - Where to put method's return value (if - * any). If NULL, no value is returned. - * - * RETURN: Status - * - * DESCRIPTION: Find and evaluate the given object, passing the given - * parameters if necessary. One of "Handle" or "Pathname" must - * be valid (non-null) - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvaluateObject ( - ACPI_HANDLE Handle, - ACPI_STRING Pathname, - ACPI_OBJECT_LIST *ExternalParams, - ACPI_BUFFER *ReturnBuffer) -{ - ACPI_STATUS Status; - ACPI_EVALUATE_INFO *Info; - ACPI_SIZE BufferSpaceNeeded; - UINT32 i; - - - ACPI_FUNCTION_TRACE (AcpiEvaluateObject); - - - /* Allocate and initialize the evaluation information block */ - - Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); - if (!Info) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - Info->Pathname = Pathname; - Info->ParameterType = ACPI_PARAM_ARGS; - - /* Convert and validate the device handle */ - - Info->PrefixNode = AcpiNsMapHandleToNode (Handle); - if (!Info->PrefixNode) - { - Status = AE_BAD_PARAMETER; - goto Cleanup; - } - - /* - * If there are parameters to be passed to a control method, the external - * objects must all be converted to internal objects - */ - if (ExternalParams && ExternalParams->Count) - { - /* - * Allocate a new parameter block for the internal objects - * Add 1 to count to allow for null terminated internal list - */ - Info->Parameters = ACPI_ALLOCATE_ZEROED ( - ((ACPI_SIZE) ExternalParams->Count + 1) * sizeof (void *)); - if (!Info->Parameters) - { - Status = AE_NO_MEMORY; - goto Cleanup; - } - - /* Convert each external object in the list to an internal object */ - - for (i = 0; i < ExternalParams->Count; i++) - { - Status = AcpiUtCopyEobjectToIobject ( - &ExternalParams->Pointer[i], &Info->Parameters[i]); - if (ACPI_FAILURE (Status)) - { - goto Cleanup; - } - } - Info->Parameters[ExternalParams->Count] = NULL; - } - - /* - * Three major cases: - * 1) Fully qualified pathname - * 2) No handle, not fully qualified pathname (error) - * 3) Valid handle - */ - if ((Pathname) && - (AcpiNsValidRootPrefix (Pathname[0]))) - { - /* The path is fully qualified, just evaluate by name */ - - Info->PrefixNode = NULL; - Status = AcpiNsEvaluate (Info); - } - else if (!Handle) - { - /* - * A handle is optional iff a fully qualified pathname is specified. - * Since we've already handled fully qualified names above, this is - * an error - */ - if (!Pathname) - { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Both Handle and Pathname are NULL")); - } - else - { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Null Handle with relative pathname [%s]", Pathname)); - } - - Status = AE_BAD_PARAMETER; - } - else - { - /* We have a namespace a node and a possible relative path */ - - Status = AcpiNsEvaluate (Info); - } - - /* - * If we are expecting a return value, and all went well above, - * copy the return value to an external object. - */ - if (ReturnBuffer) - { - if (!Info->ReturnObject) - { - ReturnBuffer->Length = 0; - } - else - { - if (ACPI_GET_DESCRIPTOR_TYPE (Info->ReturnObject) == - ACPI_DESC_TYPE_NAMED) - { - /* - * If we received a NS Node as a return object, this means that - * the object we are evaluating has nothing interesting to - * return (such as a mutex, etc.) We return an error because - * these types are essentially unsupported by this interface. - * We don't check up front because this makes it easier to add - * support for various types at a later date if necessary. - */ - Status = AE_TYPE; - Info->ReturnObject = NULL; /* No need to delete a NS Node */ - ReturnBuffer->Length = 0; - } - - if (ACPI_SUCCESS (Status)) - { - /* Get the size of the returned object */ - - Status = AcpiUtGetObjectSize (Info->ReturnObject, - &BufferSpaceNeeded); - if (ACPI_SUCCESS (Status)) - { - /* Validate/Allocate/Clear caller buffer */ - - Status = AcpiUtInitializeBuffer (ReturnBuffer, - BufferSpaceNeeded); - if (ACPI_FAILURE (Status)) - { - /* - * Caller's buffer is too small or a new one can't - * be allocated - */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Needed buffer size %X, %s\n", - (UINT32) BufferSpaceNeeded, - AcpiFormatException (Status))); - } - else - { - /* We have enough space for the object, build it */ - - Status = AcpiUtCopyIobjectToEobject (Info->ReturnObject, - ReturnBuffer); - } - } - } - } - } - - if (Info->ReturnObject) - { - /* - * Delete the internal return object. NOTE: Interpreter must be - * locked to avoid race condition. - */ - AcpiExEnterInterpreter (); - - /* Remove one reference on the return object (should delete it) */ - - AcpiUtRemoveReference (Info->ReturnObject); - AcpiExExitInterpreter (); - } - - -Cleanup: - - /* Free the input parameter list (if we created one) */ - - if (Info->Parameters) - { - /* Free the allocated parameter block */ - - AcpiUtDeleteInternalObjectList (Info->Parameters); - } - - ACPI_FREE (Info); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiEvaluateObject) - - -/******************************************************************************* - * - * FUNCTION: AcpiWalkNamespace - * - * PARAMETERS: Type - ACPI_OBJECT_TYPE to search for - * StartObject - Handle in namespace where search begins - * MaxDepth - Depth to which search is to reach - * UserFunction - Called when an object of "Type" is found - * Context - Passed to user function - * ReturnValue - Location where return value of - * UserFunction is put if terminated early - * - * RETURNS Return value from the UserFunction if terminated early. - * Otherwise, returns NULL. - * - * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, - * starting (and ending) at the object specified by StartHandle. - * The UserFunction is called whenever an object that matches - * the type parameter is found. If the user function returns - * a non-zero value, the search is terminated immediately and this - * value is returned to the caller. - * - * The point of this procedure is to provide a generic namespace - * walk routine that can be called from multiple places to - * provide multiple services; the User Function can be tailored - * to each task, whether it is a print function, a compare - * function, etc. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiWalkNamespace ( - ACPI_OBJECT_TYPE Type, - ACPI_HANDLE StartObject, - UINT32 MaxDepth, - ACPI_WALK_CALLBACK UserFunction, - void *Context, - void **ReturnValue) -{ - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiWalkNamespace); - - - /* Parameter validation */ - - if ((Type > ACPI_TYPE_LOCAL_MAX) || - (!MaxDepth) || - (!UserFunction)) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* - * Lock the namespace around the walk. - * The namespace will be unlocked/locked around each call - * to the user function - since this function - * must be allowed to make Acpi calls itself. - */ - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - Status = AcpiNsWalkNamespace (Type, StartObject, MaxDepth, - ACPI_NS_WALK_UNLOCK, - UserFunction, Context, ReturnValue); - - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiWalkNamespace) - - -/******************************************************************************* - * - * FUNCTION: AcpiNsGetDeviceCallback - * - * PARAMETERS: Callback from AcpiGetDevice - * - * RETURN: Status - * - * DESCRIPTION: Takes callbacks from WalkNamespace and filters out all non- - * present devices, or if they specified a HID, it filters based - * on that. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiNsGetDeviceCallback ( - ACPI_HANDLE ObjHandle, - UINT32 NestingLevel, - void *Context, - void **ReturnValue) -{ - ACPI_GET_DEVICES_INFO *Info = Context; - ACPI_STATUS Status; - ACPI_NAMESPACE_NODE *Node; - UINT32 Flags; - ACPI_DEVICE_ID Hid; - ACPI_COMPATIBLE_ID_LIST *Cid; - ACPI_NATIVE_UINT i; - - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - Node = AcpiNsMapHandleToNode (ObjHandle); - Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - if (!Node) - { - return (AE_BAD_PARAMETER); - } - - /* Run _STA to determine if device is present */ - - Status = AcpiUtExecute_STA (Node, &Flags); - if (ACPI_FAILURE (Status)) - { - return (AE_CTRL_DEPTH); - } - - if (!(Flags & ACPI_STA_DEVICE_PRESENT)) - { - /* Don't examine children of the device if not present */ - - return (AE_CTRL_DEPTH); - } - - /* Filter based on device HID & CID */ - - if (Info->Hid != NULL) - { - Status = AcpiUtExecute_HID (Node, &Hid); - if (Status == AE_NOT_FOUND) - { - return (AE_OK); - } - else if (ACPI_FAILURE (Status)) - { - return (AE_CTRL_DEPTH); - } - - if (ACPI_STRNCMP (Hid.Value, Info->Hid, sizeof (Hid.Value)) != 0) - { - /* Get the list of Compatible IDs */ - - Status = AcpiUtExecute_CID (Node, &Cid); - if (Status == AE_NOT_FOUND) - { - return (AE_OK); - } - else if (ACPI_FAILURE (Status)) - { - return (AE_CTRL_DEPTH); - } - - /* Walk the CID list */ - - for (i = 0; i < Cid->Count; i++) - { - if (ACPI_STRNCMP (Cid->Id[i].Value, Info->Hid, - sizeof (ACPI_COMPATIBLE_ID)) != 0) - { - ACPI_FREE (Cid); - return (AE_OK); - } - } - ACPI_FREE (Cid); - } - } - - Status = Info->UserFunction (ObjHandle, NestingLevel, Info->Context, - ReturnValue); - return (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiGetDevices - * - * PARAMETERS: HID - HID to search for. Can be NULL. - * UserFunction - Called when a matching object is found - * Context - Passed to user function - * ReturnValue - Location where return value of - * UserFunction is put if terminated early - * - * RETURNS Return value from the UserFunction if terminated early. - * Otherwise, returns NULL. - * - * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, - * starting (and ending) at the object specified by StartHandle. - * The UserFunction is called whenever an object of type - * Device is found. If the user function returns - * a non-zero value, the search is terminated immediately and this - * value is returned to the caller. - * - * This is a wrapper for WalkNamespace, but the callback performs - * additional filtering. Please see AcpiGetDeviceCallback. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiGetDevices ( - char *HID, - ACPI_WALK_CALLBACK UserFunction, - void *Context, - void **ReturnValue) -{ - ACPI_STATUS Status; - ACPI_GET_DEVICES_INFO Info; - - - ACPI_FUNCTION_TRACE (AcpiGetDevices); - - - /* Parameter validation */ - - if (!UserFunction) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* - * We're going to call their callback from OUR callback, so we need - * to know what it is, and their context parameter. - */ - Info.Hid = HID; - Info.Context = Context; - Info.UserFunction = UserFunction; - - /* - * Lock the namespace around the walk. - * The namespace will be unlocked/locked around each call - * to the user function - since this function - * must be allowed to make Acpi calls itself. - */ - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - AcpiNsGetDeviceCallback, &Info, ReturnValue); - - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiGetDevices) - - -/******************************************************************************* - * - * FUNCTION: AcpiAttachData - * - * PARAMETERS: ObjHandle - Namespace node - * Handler - Handler for this attachment - * Data - Pointer to data to be attached - * - * RETURN: Status - * - * DESCRIPTION: Attach arbitrary data and handler to a namespace node. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiAttachData ( - ACPI_HANDLE ObjHandle, - ACPI_OBJECT_HANDLER Handler, - void *Data) -{ - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - /* Parameter validation */ - - if (!ObjHandle || - !Handler || - !Data) - { - return (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* Convert and validate the handle */ - - Node = AcpiNsMapHandleToNode (ObjHandle); - if (!Node) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - Status = AcpiNsAttachData (Node, Handler, Data); - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiAttachData) - - -/******************************************************************************* - * - * FUNCTION: AcpiDetachData - * - * PARAMETERS: ObjHandle - Namespace node handle - * Handler - Handler used in call to AcpiAttachData - * - * RETURN: Status - * - * DESCRIPTION: Remove data that was previously attached to a node. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDetachData ( - ACPI_HANDLE ObjHandle, - ACPI_OBJECT_HANDLER Handler) -{ - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - /* Parameter validation */ - - if (!ObjHandle || - !Handler) - { - return (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* Convert and validate the handle */ - - Node = AcpiNsMapHandleToNode (ObjHandle); - if (!Node) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - Status = AcpiNsDetachData (Node, Handler); - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiDetachData) - - -/******************************************************************************* - * - * FUNCTION: AcpiGetData - * - * PARAMETERS: ObjHandle - Namespace node - * Handler - Handler used in call to AttachData - * Data - Where the data is returned - * - * RETURN: Status - * - * DESCRIPTION: Retrieve data that was previously attached to a namespace node. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiGetData ( - ACPI_HANDLE ObjHandle, - ACPI_OBJECT_HANDLER Handler, - void **Data) -{ - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - /* Parameter validation */ - - if (!ObjHandle || - !Handler || - !Data) - { - return (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* Convert and validate the handle */ - - Node = AcpiNsMapHandleToNode (ObjHandle); - if (!Node) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - Status = AcpiNsGetAttachedData (Node, Handler, Data); - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiGetData) - - |
