FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/dispatcher/dsinit.c

     /******************************************************************************
      *
      * Module Name: dsinit - Object initialization namespace walk
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 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/acnamesp.h>
   #include <contrib/dev/acpica/include/actables.h>
   #include <contrib/dev/acpica/include/acinterp.h>
   
   #define _COMPONENT          ACPI_DISPATCHER
           ACPI_MODULE_NAME    ("dsinit")
   
   
   /* Local prototypes */
   
   static ACPI_STATUS
   AcpiDsInitOneObject (
       ACPI_HANDLE             ObjHandle,
       UINT32                  Level,
       void                    *Context,
       void                    **ReturnValue);
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsInitOneObject
    *
    * PARAMETERS:  ObjHandle       - Node for the object
    *              Level           - Current nesting level
    *              Context         - Points to a init info struct
    *              ReturnValue     - Not used
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
    *              within the namespace.
    *
    *              Currently, the only objects that require initialization are:
    *              1) Methods
    *              2) Operation Regions
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiDsInitOneObject (
       ACPI_HANDLE             ObjHandle,
       UINT32                  Level,
       void                    *Context,
       void                    **ReturnValue)
   {
       ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;
       ACPI_NAMESPACE_NODE     *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
       ACPI_STATUS             Status;
       ACPI_OPERAND_OBJECT     *ObjDesc;
   
   
       ACPI_FUNCTION_ENTRY ();
   
   
       /*
        * We are only interested in NS nodes owned by the table that
        * was just loaded
        */
       if (Node->OwnerId != Info->OwnerId)
       {
           return (AE_OK);
       }
   
       Info->ObjectCount++;
   
       /* And even then, we are only interested in a few object types */
   
       switch (AcpiNsGetType (ObjHandle))
       {
       case ACPI_TYPE_REGION:
   
           Status = AcpiDsInitializeRegion (ObjHandle);
           if (ACPI_FAILURE (Status))
           {
               ACPI_EXCEPTION ((AE_INFO, Status,
                   "During Region initialization %p [%4.4s]",
                   ObjHandle, AcpiUtGetNodeName (ObjHandle)));
           }
   
           Info->OpRegionCount++;
           break;
   
       case ACPI_TYPE_METHOD:
           /*
            * Auto-serialization support. We will examine each method that is
            * NotSerialized to determine if it creates any Named objects. If
            * it does, it will be marked serialized to prevent problems if
            * the method is entered by two or more threads and an attempt is
            * made to create the same named object twice -- which results in
            * an AE_ALREADY_EXISTS exception and method abort.
            */
           Info->MethodCount++;
           ObjDesc = AcpiNsGetAttachedObject (Node);
           if (!ObjDesc)
           {
               break;
           }
   
           /* Ignore if already serialized */
   
           if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
           {
               Info->SerialMethodCount++;
               break;
           }
   
           if (AcpiGbl_AutoSerializeMethods)
           {
               /* Parse/scan method and serialize it if necessary */
   
               AcpiDsAutoSerializeMethod (Node, ObjDesc);
               if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
               {
                   /* Method was just converted to Serialized */
   
                   Info->SerialMethodCount++;
                   Info->SerializedMethodCount++;
                   break;
               }
           }
   
           Info->NonSerialMethodCount++;
           break;
   
       case ACPI_TYPE_DEVICE:
   
           Info->DeviceCount++;
           break;
   
       default:
   
           break;
       }
   
       /*
        * We ignore errors from above, and always return OK, since
        * we don't want to abort the walk on a single error.
        */
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsInitializeObjects
    *
    * PARAMETERS:  TableDesc       - Descriptor for parent ACPI table
    *              StartNode       - Root of subtree to be initialized.
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
    *              necessary initialization on the objects found therein
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsInitializeObjects (
       UINT32                  TableIndex,
       ACPI_NAMESPACE_NODE     *StartNode)
   {
       ACPI_STATUS             Status;
       ACPI_INIT_WALK_INFO     Info;
       ACPI_TABLE_HEADER       *Table;
       ACPI_OWNER_ID           OwnerId;
   
   
       ACPI_FUNCTION_TRACE (DsInitializeObjects);
   
   
       Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
           "**** Starting initialization of namespace objects ****\n"));
   
       /* Set all init info to zero */
   
       memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
   
       Info.OwnerId = OwnerId;
       Info.TableIndex = TableIndex;
   
       /* Walk entire namespace from the supplied root */
   
       /*
        * We don't use AcpiWalkNamespace since we do not want to acquire
        * the namespace reader lock.
        */
       Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
           ACPI_NS_WALK_NO_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
       if (ACPI_FAILURE (Status))
       {
           ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
       }
   
       Status = AcpiGetTableByIndex (TableIndex, &Table);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       /* DSDT is always the first AML table */
   
       if (ACPI_COMPARE_NAMESEG (Table->Signature, ACPI_SIG_DSDT))
       {
           ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
               "\nACPI table initialization:\n"));
       }
   
       /* Summary of objects initialized */
   
       ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
           "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
           "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
           Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount,
           Info.DeviceCount,Info.OpRegionCount, Info.MethodCount,
           Info.SerialMethodCount, Info.NonSerialMethodCount,
           Info.SerializedMethodCount));
   
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
           Info.MethodCount, Info.OpRegionCount));
   
       return_ACPI_STATUS (AE_OK);
   }

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