435 lines
14 KiB
C
435 lines
14 KiB
C
/* $NetBSD: nsload.c,v 1.3 2007/12/11 13:16:13 lukem Exp $ */
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/******************************************************************************
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*
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* Module Name: nsload - namespace loading/expanding/contracting procedures
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* $Revision: 1.3 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: nsload.c,v 1.3 2007/12/11 13:16:13 lukem Exp $");
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#define __NSLOAD_C__
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#include <dist/acpica/acpi.h>
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#include <dist/acpica/acnamesp.h>
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#include <dist/acpica/acdispat.h>
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#include <dist/acpica/actables.h>
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME ("nsload")
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/* Local prototypes */
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#ifdef ACPI_FUTURE_IMPLEMENTATION
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ACPI_STATUS
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AcpiNsUnloadNamespace (
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ACPI_HANDLE Handle);
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static ACPI_STATUS
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AcpiNsDeleteSubtree (
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ACPI_HANDLE StartHandle);
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#endif
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#ifndef ACPI_NO_METHOD_EXECUTION
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsLoadTable
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*
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* PARAMETERS: TableIndex - Index for table to be loaded
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* Node - Owning NS node
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load one ACPI table into the namespace
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsLoadTable (
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ACPI_NATIVE_UINT TableIndex,
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ACPI_NAMESPACE_NODE *Node)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (NsLoadTable);
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/*
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* Parse the table and load the namespace with all named
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* objects found within. Control methods are NOT parsed
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* at this time. In fact, the control methods cannot be
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* parsed until the entire namespace is loaded, because
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* if a control method makes a forward reference (call)
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* to another control method, we can't continue parsing
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* because we don't know how many arguments to parse next!
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*/
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* If table already loaded into namespace, just return */
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if (AcpiTbIsTableLoaded (TableIndex))
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{
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Status = AE_ALREADY_EXISTS;
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goto Unlock;
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"**** Loading table into namespace ****\n"));
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Status = AcpiTbAllocateOwnerId (TableIndex);
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if (ACPI_FAILURE (Status))
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{
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goto Unlock;
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}
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Status = AcpiNsParseTable (TableIndex, Node->Child);
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if (ACPI_SUCCESS (Status))
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{
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AcpiTbSetTableLoadedFlag (TableIndex, TRUE);
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}
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else
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{
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AcpiTbReleaseOwnerId (TableIndex);
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}
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Unlock:
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(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* Now we can parse the control methods. We always parse
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* them here for a sanity check, and if configured for
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* just-in-time parsing, we delete the control method
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* parse trees.
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"**** Begin Table Method Parsing and Object Initialization ****\n"));
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Status = AcpiDsInitializeObjects (TableIndex, Node);
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"**** Completed Table Method Parsing and Object Initialization ****\n"));
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return_ACPI_STATUS (Status);
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}
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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/*******************************************************************************
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*
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* FUNCTION: AcpiLoadNamespace
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load the name space from what ever is pointed to by DSDT.
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* (DSDT points to either the BIOS or a buffer.)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsLoadNamespace (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiLoadNameSpace);
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/* There must be at least a DSDT installed */
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if (AcpiGbl_DSDT == NULL)
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{
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ACPI_ERROR ((AE_INFO, "DSDT is not in memory"));
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/*
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* Load the namespace. The DSDT is required,
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* but the SSDT and PSDT tables are optional.
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*/
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Status = AcpiNsLoadTableByType (ACPI_TABLE_ID_DSDT);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Ignore exceptions from these */
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(void) AcpiNsLoadTableByType (ACPI_TABLE_ID_SSDT);
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(void) AcpiNsLoadTableByType (ACPI_TABLE_ID_PSDT);
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"ACPI Namespace successfully loaded at root %p\n",
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AcpiGbl_RootNode));
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return_ACPI_STATUS (Status);
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}
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#endif
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#ifdef ACPI_FUTURE_IMPLEMENTATION
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsDeleteSubtree
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*
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* PARAMETERS: StartHandle - Handle in namespace where search begins
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*
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* RETURNS Status
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*
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* DESCRIPTION: Walks the namespace starting at the given handle and deletes
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* all objects, entries, and scopes in the entire subtree.
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*
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* Namespace/Interpreter should be locked or the subsystem should
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* be in shutdown before this routine is called.
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiNsDeleteSubtree (
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ACPI_HANDLE StartHandle)
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{
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ACPI_STATUS Status;
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ACPI_HANDLE ChildHandle;
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ACPI_HANDLE ParentHandle;
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ACPI_HANDLE NextChildHandle;
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ACPI_HANDLE Dummy;
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UINT32 Level;
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ACPI_FUNCTION_TRACE (NsDeleteSubtree);
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ParentHandle = StartHandle;
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ChildHandle = NULL;
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Level = 1;
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/*
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* Traverse the tree of objects until we bubble back up
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* to where we started.
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*/
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while (Level > 0)
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{
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/* Attempt to get the next object in this scope */
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Status = AcpiGetNextObject (ACPI_TYPE_ANY, ParentHandle,
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ChildHandle, &NextChildHandle);
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ChildHandle = NextChildHandle;
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/* Did we get a new object? */
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if (ACPI_SUCCESS (Status))
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{
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/* Check if this object has any children */
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if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY, ChildHandle,
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NULL, &Dummy)))
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{
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/*
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* There is at least one child of this object,
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* visit the object
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*/
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Level++;
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ParentHandle = ChildHandle;
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ChildHandle = NULL;
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}
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}
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else
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{
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/*
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* No more children in this object, go back up to
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* the object's parent
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*/
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Level--;
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/* Delete all children now */
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AcpiNsDeleteChildren (ChildHandle);
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ChildHandle = ParentHandle;
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Status = AcpiGetParent (ParentHandle, &ParentHandle);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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}
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/* Now delete the starting object, and we are done */
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AcpiNsDeleteNode (ChildHandle);
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsUnloadNameSpace
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*
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* PARAMETERS: Handle - Root of namespace subtree to be deleted
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*
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* RETURN: Status
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*
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* DESCRIPTION: Shrinks the namespace, typically in response to an undocking
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* event. Deletes an entire subtree starting from (and
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* including) the given handle.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsUnloadNamespace (
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ACPI_HANDLE Handle)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (NsUnloadNameSpace);
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/* Parameter validation */
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if (!AcpiGbl_RootNode)
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{
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return_ACPI_STATUS (AE_NO_NAMESPACE);
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}
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if (!Handle)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* This function does the real work */
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Status = AcpiNsDeleteSubtree (Handle);
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return_ACPI_STATUS (Status);
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}
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#endif
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#endif
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