712 lines
23 KiB
C
712 lines
23 KiB
C
/******************************************************************************
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*
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* Module Name: nsinit - namespace initialization
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* $Revision: 1.6 $
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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 - 2008, 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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#define __NSXFINIT_C__
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#include "acpi.h"
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#include "acnamesp.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME ("nsinit")
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/* Local prototypes */
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static ACPI_STATUS
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AcpiNsInitOneObject (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue);
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static ACPI_STATUS
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AcpiNsInitOneDevice (
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ACPI_HANDLE ObjHandle,
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UINT32 NestingLevel,
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void *Context,
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void **ReturnValue);
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static ACPI_STATUS
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AcpiNsFindIniMethods (
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ACPI_HANDLE ObjHandle,
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UINT32 NestingLevel,
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void *Context,
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void **ReturnValue);
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsInitializeObjects
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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: Walk the entire namespace and perform any necessary
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* initialization on the objects found therein
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsInitializeObjects (
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void)
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{
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ACPI_STATUS Status;
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ACPI_INIT_WALK_INFO Info;
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ACPI_FUNCTION_TRACE (NsInitializeObjects);
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"**** Starting initialization of namespace objects ****\n"));
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"Completing Region/Field/Buffer/Package initialization:"));
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/* Set all init info to zero */
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ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
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/* Walk entire namespace from the supplied root */
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Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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ACPI_UINT32_MAX, AcpiNsInitOneObject,
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&Info, NULL);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
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}
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n",
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Info.OpRegionInit, Info.OpRegionCount,
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Info.FieldInit, Info.FieldCount,
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Info.BufferInit, Info.BufferCount,
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Info.PackageInit, Info.PackageCount, Info.ObjectCount));
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"%hd Control Methods found\n", Info.MethodCount));
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"%hd Op Regions found\n", Info.OpRegionCount));
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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: AcpiNsInitializeDevices
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*
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* PARAMETERS: None
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*
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* RETURN: ACPI_STATUS
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*
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* DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
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* This means running _INI on all present devices.
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*
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* Note: We install PCI config space handler on region access,
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* not here.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsInitializeDevices (
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void)
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{
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ACPI_STATUS Status;
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ACPI_DEVICE_WALK_INFO Info;
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ACPI_FUNCTION_TRACE (NsInitializeDevices);
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/* Init counters */
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Info.DeviceCount = 0;
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Info.Num_STA = 0;
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Info.Num_INI = 0;
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"Initializing Device/Processor/Thermal objects by executing _INI methods:"));
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/* Tree analysis: find all subtrees that contain _INI methods */
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Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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ACPI_UINT32_MAX, FALSE, AcpiNsFindIniMethods, &Info, NULL);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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/* Allocate the evaluation information block */
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Info.EvaluateInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
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if (!Info.EvaluateInfo)
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{
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Status = AE_NO_MEMORY;
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goto ErrorExit;
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}
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/* Walk namespace to execute all _INIs on present devices */
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Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL);
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ACPI_FREE (Info.EvaluateInfo);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
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"\nExecuted %hd _INI methods requiring %hd _STA executions (examined %hd objects)\n",
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Info.Num_INI, Info.Num_STA, Info.DeviceCount));
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return_ACPI_STATUS (Status);
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ErrorExit:
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ACPI_EXCEPTION ((AE_INFO, Status, "During device initialization"));
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsInitOneObject
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*
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* PARAMETERS: ObjHandle - Node
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* Level - Current nesting level
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* Context - Points to a init info struct
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* ReturnValue - Not used
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*
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* RETURN: Status
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*
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* DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
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* within the namespace.
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*
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* Currently, the only objects that require initialization are:
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* 1) Methods
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* 2) Op Regions
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiNsInitOneObject (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue)
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{
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ACPI_OBJECT_TYPE Type;
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ACPI_STATUS Status = AE_OK;
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ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context;
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ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_FUNCTION_NAME (NsInitOneObject);
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Info->ObjectCount++;
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/* And even then, we are only interested in a few object types */
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Type = AcpiNsGetType (ObjHandle);
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ObjDesc = AcpiNsGetAttachedObject (Node);
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if (!ObjDesc)
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{
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return (AE_OK);
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}
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/* Increment counters for object types we are looking for */
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switch (Type)
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{
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case ACPI_TYPE_REGION:
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Info->OpRegionCount++;
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break;
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case ACPI_TYPE_BUFFER_FIELD:
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Info->FieldCount++;
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break;
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case ACPI_TYPE_LOCAL_BANK_FIELD:
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Info->FieldCount++;
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break;
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case ACPI_TYPE_BUFFER:
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Info->BufferCount++;
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break;
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case ACPI_TYPE_PACKAGE:
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Info->PackageCount++;
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break;
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default:
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/* No init required, just exit now */
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return (AE_OK);
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}
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/*
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* If the object is already initialized, nothing else to do
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*/
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if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
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{
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return (AE_OK);
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}
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/*
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* Must lock the interpreter before executing AML code
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*/
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AcpiExEnterInterpreter ();
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/*
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* Each of these types can contain executable AML code within the
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* declaration.
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*/
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switch (Type)
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{
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case ACPI_TYPE_REGION:
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Info->OpRegionInit++;
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Status = AcpiDsGetRegionArguments (ObjDesc);
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break;
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case ACPI_TYPE_BUFFER_FIELD:
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Info->FieldInit++;
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Status = AcpiDsGetBufferFieldArguments (ObjDesc);
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break;
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case ACPI_TYPE_LOCAL_BANK_FIELD:
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Info->FieldInit++;
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Status = AcpiDsGetBankFieldArguments (ObjDesc);
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break;
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case ACPI_TYPE_BUFFER:
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Info->BufferInit++;
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Status = AcpiDsGetBufferArguments (ObjDesc);
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break;
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case ACPI_TYPE_PACKAGE:
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Info->PackageInit++;
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Status = AcpiDsGetPackageArguments (ObjDesc);
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break;
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default:
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/* No other types can get here */
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break;
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}
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not execute arguments for [%4.4s] (%s)",
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AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type)));
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}
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/*
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* Print a dot for each object unless we are going to print the entire
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* pathname
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*/
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if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
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{
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
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}
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/*
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* We ignore errors from above, and always return OK, since we don't want
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* to abort the walk on any single error.
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*/
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AcpiExExitInterpreter ();
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsFindIniMethods
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*
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* PARAMETERS: ACPI_WALK_CALLBACK
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*
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* RETURN: ACPI_STATUS
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*
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* DESCRIPTION: Called during namespace walk. Finds objects named _INI under
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* device/processor/thermal objects, and marks the entire subtree
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* with a SUBTREE_HAS_INI flag. This flag is used during the
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* subsequent device initialization walk to avoid entire subtrees
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* that do not contain an _INI.
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiNsFindIniMethods (
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ACPI_HANDLE ObjHandle,
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UINT32 NestingLevel,
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void *Context,
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void **ReturnValue)
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{
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ACPI_DEVICE_WALK_INFO *Info = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
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ACPI_NAMESPACE_NODE *Node;
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ACPI_NAMESPACE_NODE *ParentNode;
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/* Keep count of device/processor/thermal objects */
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Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
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if ((Node->Type == ACPI_TYPE_DEVICE) ||
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(Node->Type == ACPI_TYPE_PROCESSOR) ||
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(Node->Type == ACPI_TYPE_THERMAL))
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{
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Info->DeviceCount++;
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return (AE_OK);
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}
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/* We are only looking for methods named _INI */
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if (ACPI_STRNCMP (Node->Name.Ascii, METHOD_NAME__INI, 4))
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{
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return (AE_OK);
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}
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/*
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* The only _INI methods that we care about are those that are
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* present under Device, Processor, and Thermal objects.
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*/
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ParentNode = AcpiNsGetParentNode (Node);
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switch (ParentNode->Type)
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{
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_THERMAL:
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/* Mark parent and bubble up the INI present flag to the root */
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while (ParentNode)
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{
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ParentNode->Flags |= ANOBJ_SUBTREE_HAS_INI;
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ParentNode = AcpiNsGetParentNode (ParentNode);
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}
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break;
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default:
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break;
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsInitOneDevice
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*
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* PARAMETERS: ACPI_WALK_CALLBACK
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*
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* RETURN: ACPI_STATUS
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*
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* DESCRIPTION: This is called once per device soon after ACPI is enabled
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* to initialize each device. It determines if the device is
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* present, and if so, calls _INI.
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiNsInitOneDevice (
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ACPI_HANDLE ObjHandle,
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UINT32 NestingLevel,
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void *Context,
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void **ReturnValue)
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{
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ACPI_DEVICE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
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ACPI_EVALUATE_INFO *Info = WalkInfo->EvaluateInfo;
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UINT32 Flags;
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *DeviceNode;
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ACPI_FUNCTION_TRACE (NsInitOneDevice);
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/* We are interested in Devices, Processors and ThermalZones only */
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DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
|
|
if ((DeviceNode->Type != ACPI_TYPE_DEVICE) &&
|
|
(DeviceNode->Type != ACPI_TYPE_PROCESSOR) &&
|
|
(DeviceNode->Type != ACPI_TYPE_THERMAL))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Because of an earlier namespace analysis, all subtrees that contain an
|
|
* _INI method are tagged.
|
|
*
|
|
* If this device subtree does not contain any _INI methods, we
|
|
* can exit now and stop traversing this entire subtree.
|
|
*/
|
|
if (!(DeviceNode->Flags & ANOBJ_SUBTREE_HAS_INI))
|
|
{
|
|
return_ACPI_STATUS (AE_CTRL_DEPTH);
|
|
}
|
|
|
|
/*
|
|
* Run _STA to determine if this device is present and functioning. We
|
|
* must know this information for two important reasons (from ACPI spec):
|
|
*
|
|
* 1) We can only run _INI if the device is present.
|
|
* 2) We must abort the device tree walk on this subtree if the device is
|
|
* not present and is not functional (we will not examine the children)
|
|
*
|
|
* The _STA method is not required to be present under the device, we
|
|
* assume the device is present if _STA does not exist.
|
|
*/
|
|
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
|
|
ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__STA));
|
|
|
|
Status = AcpiUtExecute_STA (DeviceNode, &Flags);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
/* Ignore error and move on to next device */
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Flags == -1 means that _STA was not found. In this case, we assume that
|
|
* the device is both present and functional.
|
|
*
|
|
* From the ACPI spec, description of _STA:
|
|
*
|
|
* "If a device object (including the processor object) does not have an
|
|
* _STA object, then OSPM assumes that all of the above bits are set (in
|
|
* other words, the device is present, ..., and functioning)"
|
|
*/
|
|
if (Flags != ACPI_UINT32_MAX)
|
|
{
|
|
WalkInfo->Num_STA++;
|
|
}
|
|
|
|
/*
|
|
* Examine the PRESENT and FUNCTIONING status bits
|
|
*
|
|
* Note: ACPI spec does not seem to specify behavior for the present but
|
|
* not functioning case, so we assume functioning if present.
|
|
*/
|
|
if (!(Flags & ACPI_STA_DEVICE_PRESENT))
|
|
{
|
|
/* Device is not present, we must examine the Functioning bit */
|
|
|
|
if (Flags & ACPI_STA_DEVICE_FUNCTIONING)
|
|
{
|
|
/*
|
|
* Device is not present but is "functioning". In this case,
|
|
* we will not run _INI, but we continue to examine the children
|
|
* of this device.
|
|
*
|
|
* From the ACPI spec, description of _STA: (Note - no mention
|
|
* of whether to run _INI or not on the device in question)
|
|
*
|
|
* "_STA may return bit 0 clear (not present) with bit 3 set
|
|
* (device is functional). This case is used to indicate a valid
|
|
* device for which no device driver should be loaded (for example,
|
|
* a bridge device.) Children of this device may be present and
|
|
* valid. OSPM should continue enumeration below a device whose
|
|
* _STA returns this bit combination"
|
|
*/
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Device is not present and is not functioning. We must abort the
|
|
* walk of this subtree immediately -- don't look at the children
|
|
* of such a device.
|
|
*
|
|
* From the ACPI spec, description of _INI:
|
|
*
|
|
* "If the _STA method indicates that the device is not present,
|
|
* OSPM will not run the _INI and will not examine the children
|
|
* of the device for _INI methods"
|
|
*/
|
|
return_ACPI_STATUS (AE_CTRL_DEPTH);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The device is present or is assumed present if no _STA exists.
|
|
* Run the _INI if it exists (not required to exist)
|
|
*
|
|
* Note: We know there is an _INI within this subtree, but it may not be
|
|
* under this particular device, it may be lower in the branch.
|
|
*/
|
|
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
|
|
ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI));
|
|
|
|
Info->PrefixNode = DeviceNode;
|
|
Info->Pathname = METHOD_NAME__INI;
|
|
Info->Parameters = NULL;
|
|
Info->ParameterType = ACPI_PARAM_ARGS;
|
|
Info->Flags = ACPI_IGNORE_RETURN_VALUE;
|
|
|
|
Status = AcpiNsEvaluate (Info);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
WalkInfo->Num_INI++;
|
|
|
|
if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) &&
|
|
(!(AcpiDbgLevel & ACPI_LV_INFO)))
|
|
{
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
|
|
}
|
|
}
|
|
|
|
#ifdef ACPI_DEBUG_OUTPUT
|
|
else if (Status != AE_NOT_FOUND)
|
|
{
|
|
/* Ignore error and move on to next device */
|
|
|
|
char *ScopeName = AcpiNsGetExternalPathname (Info->ResolvedNode);
|
|
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution",
|
|
ScopeName));
|
|
ACPI_FREE (ScopeName);
|
|
}
|
|
#endif
|
|
|
|
/* Ignore errors from above */
|
|
|
|
Status = AE_OK;
|
|
|
|
/*
|
|
* The _INI method has been run if present; call the Global Initialization
|
|
* Handler for this device.
|
|
*/
|
|
if (AcpiGbl_InitHandler)
|
|
{
|
|
Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|