FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/executer/exresnte.c

     /******************************************************************************
      *
      * Module Name: exresnte - AML Interpreter object resolution
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 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 <contrib/dev/acpica/include/acpi.h>
   #include <contrib/dev/acpica/include/accommon.h>
   #include <contrib/dev/acpica/include/acdispat.h>
   #include <contrib/dev/acpica/include/acinterp.h>
   #include <contrib/dev/acpica/include/acnamesp.h>
   
   
   #define _COMPONENT          ACPI_EXECUTER
           ACPI_MODULE_NAME    ("exresnte")
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExResolveNodeToValue
    *
    * PARAMETERS:  ObjectPtr       - Pointer to a location that contains
    *                                a pointer to a NS node, and will receive a
    *                                pointer to the resolved object.
    *              WalkState       - Current state. Valid only if executing AML
    *                                code. NULL if simply resolving an object
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Resolve a Namespace node to a valued object
    *
    * Note: for some of the data types, the pointer attached to the Node
    * can be either a pointer to an actual internal object or a pointer into the
    * AML stream itself. These types are currently:
    *
    *      ACPI_TYPE_INTEGER
    *      ACPI_TYPE_STRING
    *      ACPI_TYPE_BUFFER
    *      ACPI_TYPE_MUTEX
    *      ACPI_TYPE_PACKAGE
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExResolveNodeToValue (
       ACPI_NAMESPACE_NODE     **ObjectPtr,
       ACPI_WALK_STATE         *WalkState)
   
   {
       ACPI_STATUS             Status = AE_OK;
       ACPI_OPERAND_OBJECT     *SourceDesc;
       ACPI_OPERAND_OBJECT     *ObjDesc = NULL;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_OBJECT_TYPE        EntryType;
   
   
       ACPI_FUNCTION_TRACE (ExResolveNodeToValue);
   
   
       /*
        * The stack pointer points to a ACPI_NAMESPACE_NODE (Node). Get the
        * object that is attached to the Node.
        */
       Node = *ObjectPtr;
       SourceDesc = AcpiNsGetAttachedObject (Node);
       EntryType = AcpiNsGetType ((ACPI_HANDLE) Node);
   
       ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Entry=%p SourceDesc=%p [%s]\n",
            Node, SourceDesc, AcpiUtGetTypeName (EntryType)));
   
       if ((EntryType == ACPI_TYPE_LOCAL_ALIAS) ||
           (EntryType == ACPI_TYPE_LOCAL_METHOD_ALIAS))
       {
           /* There is always exactly one level of indirection */
   
           Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Node->Object);
           SourceDesc = AcpiNsGetAttachedObject (Node);
           EntryType = AcpiNsGetType ((ACPI_HANDLE) Node);
           *ObjectPtr = Node;
       }
   
       /*
        * Several object types require no further processing:
        * 1) Device/Thermal objects don't have a "real" subobject, return Node
        * 2) Method locals and arguments have a pseudo-Node
        * 3) 10/2007: Added method type to assist with Package construction.
        */
       if ((EntryType == ACPI_TYPE_DEVICE)  ||
           (EntryType == ACPI_TYPE_THERMAL) ||
           (EntryType == ACPI_TYPE_METHOD)  ||
           (Node->Flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL)))
       {
           return_ACPI_STATUS (AE_OK);
       }
   
       if (!SourceDesc)
       {
           ACPI_ERROR ((AE_INFO, "No object attached to node [%4.4s] %p",
               Node->Name.Ascii, Node));
           return_ACPI_STATUS (AE_AML_UNINITIALIZED_NODE);
       }
   
       /*
        * Action is based on the type of the Node, which indicates the type
        * of the attached object or pointer
        */
       switch (EntryType)
       {
       case ACPI_TYPE_PACKAGE:
   
           if (SourceDesc->Common.Type != ACPI_TYPE_PACKAGE)
           {
               ACPI_ERROR ((AE_INFO, "Object not a Package, type %s",
                   AcpiUtGetObjectTypeName (SourceDesc)));
               return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
           }
   
           Status = AcpiDsGetPackageArguments (SourceDesc);
           if (ACPI_SUCCESS (Status))
           {
               /* Return an additional reference to the object */
   
               ObjDesc = SourceDesc;
               AcpiUtAddReference (ObjDesc);
           }
           break;
   
       case ACPI_TYPE_BUFFER:
   
           if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER)
           {
               ACPI_ERROR ((AE_INFO, "Object not a Buffer, type %s",
                   AcpiUtGetObjectTypeName (SourceDesc)));
               return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
           }
   
           Status = AcpiDsGetBufferArguments (SourceDesc);
           if (ACPI_SUCCESS (Status))
           {
               /* Return an additional reference to the object */
   
               ObjDesc = SourceDesc;
               AcpiUtAddReference (ObjDesc);
           }
           break;
   
       case ACPI_TYPE_STRING:
   
           if (SourceDesc->Common.Type != ACPI_TYPE_STRING)
           {
               ACPI_ERROR ((AE_INFO, "Object not a String, type %s",
                   AcpiUtGetObjectTypeName (SourceDesc)));
               return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
           }
   
           /* Return an additional reference to the object */
   
           ObjDesc = SourceDesc;
           AcpiUtAddReference (ObjDesc);
           break;
   
       case ACPI_TYPE_INTEGER:
   
           if (SourceDesc->Common.Type != ACPI_TYPE_INTEGER)
           {
               ACPI_ERROR ((AE_INFO, "Object not a Integer, type %s",
                   AcpiUtGetObjectTypeName (SourceDesc)));
               return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
           }
   
           /* Return an additional reference to the object */
   
           ObjDesc = SourceDesc;
           AcpiUtAddReference (ObjDesc);
           break;
   
       case ACPI_TYPE_BUFFER_FIELD:
       case ACPI_TYPE_LOCAL_REGION_FIELD:
       case ACPI_TYPE_LOCAL_BANK_FIELD:
       case ACPI_TYPE_LOCAL_INDEX_FIELD:
   
           ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
               "FieldRead Node=%p SourceDesc=%p Type=%X\n",
               Node, SourceDesc, EntryType));
   
           Status = AcpiExReadDataFromField (WalkState, SourceDesc, &ObjDesc);
           break;
   
       /* For these objects, just return the object attached to the Node */
   
       case ACPI_TYPE_MUTEX:
       case ACPI_TYPE_POWER:
       case ACPI_TYPE_PROCESSOR:
       case ACPI_TYPE_EVENT:
       case ACPI_TYPE_REGION:
   
           /* Return an additional reference to the object */
   
           ObjDesc = SourceDesc;
           AcpiUtAddReference (ObjDesc);
           break;
   
       /* TYPE_ANY is untyped, and thus there is no object associated with it */
   
       case ACPI_TYPE_ANY:
   
           ACPI_ERROR ((AE_INFO,
               "Untyped entry %p, no attached object!", Node));
   
           return_ACPI_STATUS (AE_AML_OPERAND_TYPE);  /* Cannot be AE_TYPE */
   
       case ACPI_TYPE_LOCAL_REFERENCE:
   
           switch (SourceDesc->Reference.Class)
           {
           case ACPI_REFCLASS_TABLE:   /* This is a DdbHandle */
           case ACPI_REFCLASS_REFOF:
           case ACPI_REFCLASS_INDEX:
   
               /* Return an additional reference to the object */
   
               ObjDesc = SourceDesc;
               AcpiUtAddReference (ObjDesc);
               break;
   
           default:
   
               /* No named references are allowed here */
   
               ACPI_ERROR ((AE_INFO,
                   "Unsupported Reference type 0x%X",
                   SourceDesc->Reference.Class));
   
               return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
           }
           break;
   
       default:
   
           /* Default case is for unknown types */
   
           ACPI_ERROR ((AE_INFO,
               "Node %p - Unknown object type 0x%X",
               Node, EntryType));
   
           return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
   
       } /* switch (EntryType) */
   
   
       /* Return the object descriptor */
   
       *ObjectPtr = (void *) ObjDesc;
       return_ACPI_STATUS (Status);
   }

Cache object: cd0fff12a9889dda53e3462cda8ae0f2