/******************************************************************************* * * Module Name: nsobject - Utilities for objects attached to namespace * table entries * ******************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2022, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * 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. * * 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 MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * 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 DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include #include #include #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 * ******************************************************************************/ ACPI_STATUS AcpiNsAttachObject ( ACPI_NAMESPACE_NODE *Node, ACPI_OPERAND_OBJECT *Object, ACPI_OBJECT_TYPE Type) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *LastObjDesc; ACPI_OBJECT_TYPE ObjectType = ACPI_TYPE_ANY; ACPI_FUNCTION_TRACE (NsAttachObject); /* * Parameter validation */ if (!Node) { /* Invalid handle */ ACPI_ERROR ((AE_INFO, "Null NamedObj handle")); return_ACPI_STATUS (AE_BAD_PARAMETER); } if (!Object && (ACPI_TYPE_ANY != Type)) { /* Null object */ ACPI_ERROR ((AE_INFO, "Null object, but type not ACPI_TYPE_ANY")); return_ACPI_STATUS (AE_BAD_PARAMETER); } if (ACPI_GET_DESCRIPTOR_TYPE (Node) != ACPI_DESC_TYPE_NAMED) { /* Not a name handle */ ACPI_ERROR ((AE_INFO, "Invalid handle %p [%s]", Node, AcpiUtGetDescriptorName (Node))); return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Check if this object is already attached */ if (Node->Object == Object) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj %p already installed in NameObj %p\n", Object, Node)); return_ACPI_STATUS (AE_OK); } /* If null object, we will just install it */ if (!Object) { ObjDesc = NULL; ObjectType = ACPI_TYPE_ANY; } /* * If the source object is a namespace Node with an attached object, * we will use that (attached) object */ else if ((ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED) && ((ACPI_NAMESPACE_NODE *) Object)->Object) { /* * Value passed is a name handle and that name has a * non-null value. Use that name's value and type. */ ObjDesc = ((ACPI_NAMESPACE_NODE *) Object)->Object; ObjectType = ((ACPI_NAMESPACE_NODE *) Object)->Type; } /* * Otherwise, we will use the parameter object, but we must type * it first */ else { ObjDesc = (ACPI_OPERAND_OBJECT *) Object; /* Use the given type */ ObjectType = Type; } ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Installing %p into Node %p [%4.4s]\n", ObjDesc, Node, AcpiUtGetNodeName (Node))); /* Detach an existing attached object if present */ if (Node->Object) { AcpiNsDetachObject (Node); } if (ObjDesc) { /* * Must increment the new value's reference count * (if it is an internal object) */ AcpiUtAddReference (ObjDesc); /* * Handle objects with multiple descriptors - walk * to the end of the descriptor list */ LastObjDesc = ObjDesc; while (LastObjDesc->Common.NextObject) { LastObjDesc = LastObjDesc->Common.NextObject; } /* Install the object at the front of the object list */ LastObjDesc->Common.NextObject = Node->Object; } Node->Type = (UINT8) ObjectType; Node->Object = ObjDesc; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiNsDetachObject * * PARAMETERS: Node - A Namespace node whose object will be detached * * RETURN: None. * * DESCRIPTION: Detach/delete an object associated with a namespace node. * if the object is an allocated object, it is freed. * Otherwise, the field is simply cleared. * ******************************************************************************/ void AcpiNsDetachObject ( ACPI_NAMESPACE_NODE *Node) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_FUNCTION_TRACE (NsDetachObject); ObjDesc = Node->Object; if (!ObjDesc || (ObjDesc->Common.Type == ACPI_TYPE_LOCAL_DATA)) { return_VOID; } if (Node->Flags & ANOBJ_ALLOCATED_BUFFER) { /* Free the dynamic aml buffer */ if (ObjDesc->Common.Type == ACPI_TYPE_METHOD) { ACPI_FREE (ObjDesc->Method.AmlStart); } } if (ObjDesc->Common.Type == ACPI_TYPE_REGION) { AcpiUtRemoveAddressRange(ObjDesc->Region.SpaceId, Node); } /* Clear the Node entry in all cases */ Node->Object = NULL; if (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) == ACPI_DESC_TYPE_OPERAND) { /* Unlink object from front of possible object list */ Node->Object = ObjDesc->Common.NextObject; /* Handle possible 2-descriptor object */ if (Node->Object && (Node->Object->Common.Type != ACPI_TYPE_LOCAL_DATA)) { Node->Object = Node->Object->Common.NextObject; } /* * Detach the object from any data objects (which are still held by * the namespace node) */ if (ObjDesc->Common.NextObject && ((ObjDesc->Common.NextObject)->Common.Type == ACPI_TYPE_LOCAL_DATA)) { ObjDesc->Common.NextObject = NULL; } } /* Reset the node type to untyped */ Node->Type = ACPI_TYPE_ANY; ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "Node %p [%4.4s] Object %p\n", Node, AcpiUtGetNodeName (Node), ObjDesc)); /* Remove one reference on the object (and all subobjects) */ AcpiUtRemoveReference (ObjDesc); return_VOID; } /******************************************************************************* * * 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. * ******************************************************************************/ ACPI_OPERAND_OBJECT * AcpiNsGetAttachedObject ( ACPI_NAMESPACE_NODE *Node) { ACPI_FUNCTION_TRACE_PTR (NsGetAttachedObject, Node); if (!Node) { ACPI_WARNING ((AE_INFO, "Null Node ptr")); return_PTR (NULL); } if (!Node->Object || ((ACPI_GET_DESCRIPTOR_TYPE (Node->Object) != ACPI_DESC_TYPE_OPERAND) && (ACPI_GET_DESCRIPTOR_TYPE (Node->Object) != ACPI_DESC_TYPE_NAMED)) || ((Node->Object)->Common.Type == ACPI_TYPE_LOCAL_DATA)) { return_PTR (NULL); } return_PTR (Node->Object); } /******************************************************************************* * * 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. * ******************************************************************************/ ACPI_OPERAND_OBJECT * AcpiNsGetSecondaryObject ( ACPI_OPERAND_OBJECT *ObjDesc) { ACPI_FUNCTION_TRACE_PTR (NsGetSecondaryObject, ObjDesc); if ((!ObjDesc) || (ObjDesc->Common.Type== ACPI_TYPE_LOCAL_DATA) || (!ObjDesc->Common.NextObject) || ((ObjDesc->Common.NextObject)->Common.Type == ACPI_TYPE_LOCAL_DATA)) { return_PTR (NULL); } return_PTR (ObjDesc->Common.NextObject); } /******************************************************************************* * * 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. * ******************************************************************************/ ACPI_STATUS AcpiNsAttachData ( ACPI_NAMESPACE_NODE *Node, ACPI_OBJECT_HANDLER Handler, void *Data) { ACPI_OPERAND_OBJECT *PrevObjDesc; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *DataDesc; /* We only allow one attachment per handler */ PrevObjDesc = NULL; ObjDesc = Node->Object; while (ObjDesc) { if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_DATA) && (ObjDesc->Data.Handler == Handler)) { return (AE_ALREADY_EXISTS); } PrevObjDesc = ObjDesc; ObjDesc = ObjDesc->Common.NextObject; } /* Create an internal object for the data */ DataDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_DATA); if (!DataDesc) { return (AE_NO_MEMORY); } DataDesc->Data.Handler = Handler; DataDesc->Data.Pointer = Data; /* Install the data object */ if (PrevObjDesc) { PrevObjDesc->Common.NextObject = DataDesc; } else { Node->Object = DataDesc; } 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. * ******************************************************************************/ ACPI_STATUS AcpiNsDetachData ( ACPI_NAMESPACE_NODE *Node, ACPI_OBJECT_HANDLER Handler) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *PrevObjDesc; PrevObjDesc = NULL; ObjDesc = Node->Object; while (ObjDesc) { if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_DATA) && (ObjDesc->Data.Handler == Handler)) { if (PrevObjDesc) { PrevObjDesc->Common.NextObject = ObjDesc->Common.NextObject; } else { Node->Object = ObjDesc->Common.NextObject; } AcpiUtRemoveReference (ObjDesc); return (AE_OK); } PrevObjDesc = ObjDesc; ObjDesc = ObjDesc->Common.NextObject; } 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. * ******************************************************************************/ ACPI_STATUS AcpiNsGetAttachedData ( ACPI_NAMESPACE_NODE *Node, ACPI_OBJECT_HANDLER Handler, void **Data) { ACPI_OPERAND_OBJECT *ObjDesc; ObjDesc = Node->Object; while (ObjDesc) { if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_DATA) && (ObjDesc->Data.Handler == Handler)) { *Data = ObjDesc->Data.Pointer; return (AE_OK); } ObjDesc = ObjDesc->Common.NextObject; } return (AE_NOT_FOUND); }