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  1. /******************************************************************************
  2.  *
  3.  * Module Name: dsinit - Object initialization namespace walk
  4.  *
  5.  *****************************************************************************/
  6.  
  7. /******************************************************************************
  8.  *
  9.  * 1. Copyright Notice
  10.  *
  11.  * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
  12.  * All rights reserved.
  13.  *
  14.  * 2. License
  15.  *
  16.  * 2.1. This is your license from Intel Corp. under its intellectual property
  17.  * rights.  You may have additional license terms from the party that provided
  18.  * you this software, covering your right to use that party's intellectual
  19.  * property rights.
  20.  *
  21.  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22.  * copy of the source code appearing in this file ("Covered Code") an
  23.  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24.  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25.  * make derivatives, distribute, use and display any portion of the Covered
  26.  * Code in any form, with the right to sublicense such rights; and
  27.  *
  28.  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29.  * license (with the right to sublicense), under only those claims of Intel
  30.  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31.  * offer to sell, and import the Covered Code and derivative works thereof
  32.  * solely to the minimum extent necessary to exercise the above copyright
  33.  * license, and in no event shall the patent license extend to any additions
  34.  * to or modifications of the Original Intel Code.  No other license or right
  35.  * is granted directly or by implication, estoppel or otherwise;
  36.  *
  37.  * The above copyright and patent license is granted only if the following
  38.  * conditions are met:
  39.  *
  40.  * 3. Conditions
  41.  *
  42.  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43.  * Redistribution of source code of any substantial portion of the Covered
  44.  * Code or modification with rights to further distribute source must include
  45.  * the above Copyright Notice, the above License, this list of Conditions,
  46.  * and the following Disclaimer and Export Compliance provision.  In addition,
  47.  * Licensee must cause all Covered Code to which Licensee contributes to
  48.  * contain a file documenting the changes Licensee made to create that Covered
  49.  * Code and the date of any change.  Licensee must include in that file the
  50.  * documentation of any changes made by any predecessor Licensee.  Licensee
  51.  * must include a prominent statement that the modification is derived,
  52.  * directly or indirectly, from Original Intel Code.
  53.  *
  54.  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55.  * Redistribution of source code of any substantial portion of the Covered
  56.  * Code or modification without rights to further distribute source must
  57.  * include the following Disclaimer and Export Compliance provision in the
  58.  * documentation and/or other materials provided with distribution.  In
  59.  * addition, Licensee may not authorize further sublicense of source of any
  60.  * portion of the Covered Code, and must include terms to the effect that the
  61.  * license from Licensee to its licensee is limited to the intellectual
  62.  * property embodied in the software Licensee provides to its licensee, and
  63.  * not to intellectual property embodied in modifications its licensee may
  64.  * make.
  65.  *
  66.  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67.  * substantial portion of the Covered Code or modification must reproduce the
  68.  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69.  * provision in the documentation and/or other materials provided with the
  70.  * distribution.
  71.  *
  72.  * 3.4. Intel retains all right, title, and interest in and to the Original
  73.  * Intel Code.
  74.  *
  75.  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76.  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77.  * other dealings in products derived from or relating to the Covered Code
  78.  * without prior written authorization from Intel.
  79.  *
  80.  * 4. Disclaimer and Export Compliance
  81.  *
  82.  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83.  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84.  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  85.  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  86.  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  87.  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  88.  * PARTICULAR PURPOSE.
  89.  *
  90.  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  91.  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  92.  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  93.  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  94.  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  95.  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  96.  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  97.  * LIMITED REMEDY.
  98.  *
  99.  * 4.3. Licensee shall not export, either directly or indirectly, any of this
  100.  * software or system incorporating such software without first obtaining any
  101.  * required license or other approval from the U. S. Department of Commerce or
  102.  * any other agency or department of the United States Government.  In the
  103.  * event Licensee exports any such software from the United States or
  104.  * re-exports any such software from a foreign destination, Licensee shall
  105.  * ensure that the distribution and export/re-export of the software is in
  106.  * compliance with all laws, regulations, orders, or other restrictions of the
  107.  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
  108.  * any of its subsidiaries will export/re-export any technical data, process,
  109.  * software, or service, directly or indirectly, to any country for which the
  110.  * United States government or any agency thereof requires an export license,
  111.  * other governmental approval, or letter of assurance, without first obtaining
  112.  * such license, approval or letter.
  113.  *
  114.  *****************************************************************************/
  115.  
  116. #define __DSINIT_C__
  117.  
  118. #include "acpi.h"
  119. #include "accommon.h"
  120. #include "acdispat.h"
  121. #include "acnamesp.h"
  122. #include "actables.h"
  123.  
  124. #define _COMPONENT          ACPI_DISPATCHER
  125.         ACPI_MODULE_NAME    ("dsinit")
  126.  
  127. /* Local prototypes */
  128.  
  129. static ACPI_STATUS
  130. AcpiDsInitOneObject (
  131.     ACPI_HANDLE             ObjHandle,
  132.     UINT32                  Level,
  133.     void                    *Context,
  134.     void                    **ReturnValue);
  135.  
  136.  
  137. /*******************************************************************************
  138.  *
  139.  * FUNCTION:    AcpiDsInitOneObject
  140.  *
  141.  * PARAMETERS:  ObjHandle       - Node for the object
  142.  *              Level           - Current nesting level
  143.  *              Context         - Points to a init info struct
  144.  *              ReturnValue     - Not used
  145.  *
  146.  * RETURN:      Status
  147.  *
  148.  * DESCRIPTION: Callback from AcpiWalkNamespace.  Invoked for every object
  149.  *              within the namespace.
  150.  *
  151.  *              Currently, the only objects that require initialization are:
  152.  *              1) Methods
  153.  *              2) Operation Regions
  154.  *
  155.  ******************************************************************************/
  156.  
  157. static ACPI_STATUS
  158. AcpiDsInitOneObject (
  159.     ACPI_HANDLE             ObjHandle,
  160.     UINT32                  Level,
  161.     void                    *Context,
  162.     void                    **ReturnValue)
  163. {
  164.     ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;
  165.     ACPI_NAMESPACE_NODE     *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
  166.     ACPI_OBJECT_TYPE        Type;
  167.     ACPI_STATUS             Status;
  168.  
  169.  
  170.     ACPI_FUNCTION_ENTRY ();
  171.  
  172.  
  173.     /*
  174.      * We are only interested in NS nodes owned by the table that
  175.      * was just loaded
  176.      */
  177.     if (Node->OwnerId != Info->OwnerId)
  178.     {
  179.         return (AE_OK);
  180.     }
  181.  
  182.     Info->ObjectCount++;
  183.  
  184.     /* And even then, we are only interested in a few object types */
  185.  
  186.     Type = AcpiNsGetType (ObjHandle);
  187.  
  188.     switch (Type)
  189.     {
  190.     case ACPI_TYPE_REGION:
  191.  
  192.         Status = AcpiDsInitializeRegion (ObjHandle);
  193.         if (ACPI_FAILURE (Status))
  194.         {
  195.             ACPI_EXCEPTION ((AE_INFO, Status,
  196.                 "During Region initialization %p [%4.4s]",
  197.                 ObjHandle, AcpiUtGetNodeName (ObjHandle)));
  198.         }
  199.  
  200.         Info->OpRegionCount++;
  201.         break;
  202.  
  203.  
  204.     case ACPI_TYPE_METHOD:
  205.  
  206.         Info->MethodCount++;
  207.         break;
  208.  
  209.  
  210.     case ACPI_TYPE_DEVICE:
  211.  
  212.         Info->DeviceCount++;
  213.         break;
  214.  
  215.  
  216.     default:
  217.         break;
  218.     }
  219.  
  220.     /*
  221.      * We ignore errors from above, and always return OK, since
  222.      * we don't want to abort the walk on a single error.
  223.      */
  224.     return (AE_OK);
  225. }
  226.  
  227.  
  228. /*******************************************************************************
  229.  *
  230.  * FUNCTION:    AcpiDsInitializeObjects
  231.  *
  232.  * PARAMETERS:  TableDesc       - Descriptor for parent ACPI table
  233.  *              StartNode       - Root of subtree to be initialized.
  234.  *
  235.  * RETURN:      Status
  236.  *
  237.  * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
  238.  *              necessary initialization on the objects found therein
  239.  *
  240.  ******************************************************************************/
  241.  
  242. ACPI_STATUS
  243. AcpiDsInitializeObjects (
  244.     UINT32                  TableIndex,
  245.     ACPI_NAMESPACE_NODE     *StartNode)
  246. {
  247.     ACPI_STATUS             Status;
  248.     ACPI_INIT_WALK_INFO     Info;
  249.     ACPI_TABLE_HEADER       *Table;
  250.     ACPI_OWNER_ID           OwnerId;
  251.  
  252.  
  253.     ACPI_FUNCTION_TRACE (DsInitializeObjects);
  254.  
  255.  
  256.     Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
  257.     if (ACPI_FAILURE (Status))
  258.     {
  259.         return_ACPI_STATUS (Status);
  260.     }
  261.  
  262.     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
  263.         "**** Starting initialization of namespace objects ****\n"));
  264.     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));
  265.  
  266.     /* Set all init info to zero */
  267.  
  268.     ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
  269.  
  270.     Info.OwnerId = OwnerId;
  271.     Info.TableIndex = TableIndex;
  272.  
  273.     /* Walk entire namespace from the supplied root */
  274.  
  275.     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
  276.     if (ACPI_FAILURE (Status))
  277.     {
  278.         return_ACPI_STATUS (Status);
  279.     }
  280.  
  281.     /*
  282.      * We don't use AcpiWalkNamespace since we do not want to acquire
  283.      * the namespace reader lock.
  284.      */
  285.     Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
  286.                 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
  287.     if (ACPI_FAILURE (Status))
  288.     {
  289.         ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
  290.     }
  291.     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
  292.  
  293.     Status = AcpiGetTableByIndex (TableIndex, &Table);
  294.     if (ACPI_FAILURE (Status))
  295.     {
  296.         return_ACPI_STATUS (Status);
  297.     }
  298.  
  299.     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
  300.         "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n",
  301.         Table->Signature, OwnerId, Info.ObjectCount,
  302.         Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));
  303.  
  304.     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
  305.         "%u Methods, %u Regions\n", Info.MethodCount, Info.OpRegionCount));
  306.  
  307.     return_ACPI_STATUS (AE_OK);
  308. }
  309.  
  310.  
  311.