diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/namespace/nsxfobj.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/namespace/nsxfobj.c | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/namespace/nsxfobj.c b/sys/contrib/dev/acpica/components/namespace/nsxfobj.c new file mode 100644 index 0000000..687f3c0 --- /dev/null +++ b/sys/contrib/dev/acpica/components/namespace/nsxfobj.c @@ -0,0 +1,285 @@ +/******************************************************************************* + * + * Module Name: nsxfobj - Public interfaces to the ACPI subsystem + * ACPI Object oriented interfaces + * + ******************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + + +#define __NSXFOBJ_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/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) + |
