926328c406
is Intel's reference implementation of the core operating-system ACPI support. (This import is on the vendor branch.)
515 lines
16 KiB
C
515 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: nsinit - namespace initialization
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* $Revision: 4 $
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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, Intel Corp. All rights
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* 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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#define _COMPONENT NAMESPACE
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MODULE_NAME ("nsinit")
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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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FUNCTION_TRACE ("NsInitializeObjects");
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DEBUG_PRINT (TRACE_DISPATCH,
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("NsInitializeObjects: **** Starting initialization of namespace objects ****\n"));
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DEBUG_PRINT_RAW (ACPI_OK, ("Completing Region and Field initialization:"));
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Info.FieldCount = 0;
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Info.FieldInit = 0;
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Info.OpRegionCount = 0;
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Info.OpRegionInit = 0;
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Info.ObjectCount = 0;
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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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DEBUG_PRINT (ACPI_ERROR,
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("NsInitializeObjects: WalkNamespace failed! %x\n", Status));
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}
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DEBUG_PRINT_RAW (ACPI_OK,
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("\n%d/%d Regions, %d/%d Fields initialized (%d nodes total)\n",
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Info.OpRegionInit, Info.OpRegionCount, Info.FieldInit, Info.FieldCount, Info.ObjectCount));
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DEBUG_PRINT (TRACE_DISPATCH,
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("NsInitializeObjects: %d Control Methods found\n", Info.MethodCount));
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DEBUG_PRINT (TRACE_DISPATCH,
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("NsInitializeObjects: %d 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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* Also: Install PCI config space handler for all PCI root bridges.
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* A PCI root bridge is found by searching for devices containing
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* a HID with the value EISAID("PNP0A03")
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*
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*****************************************************************************/
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ACPI_STATUS
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AcpiNsInitializeDevices (
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UINT32 Flags)
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{
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ACPI_STATUS Status;
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ACPI_DEVICE_WALK_INFO Info;
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FUNCTION_TRACE ("NsInitializeDevices");
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Info.Flags = Flags;
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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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Info.Num_HID = 0;
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Info.Num_PCI = 0;
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DEBUG_PRINT_RAW (ACPI_OK, ("Executing device _INI methods:"));
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Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
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FALSE, AcpiNsInitOneDevice, &Info, NULL);
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if (ACPI_FAILURE (Status))
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{
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DEBUG_PRINT (ACPI_ERROR,
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("NsInitializeDevices: WalkNamespace failed! %x\n", Status));
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}
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DEBUG_PRINT_RAW (ACPI_OK,
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("\n%d Devices found: %d _STA, %d _INI, %d _HID, %d PCIRoot\n",
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Info.DeviceCount, Info.Num_STA, Info.Num_INI,
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Info.Num_HID, Info.Num_PCI));
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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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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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OBJECT_TYPE_INTERNAL Type;
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ACPI_STATUS Status;
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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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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 = Node->Object;
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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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switch (Type)
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{
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case ACPI_TYPE_REGION:
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Info->OpRegionCount++;
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if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
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{
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break;
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}
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Info->OpRegionInit++;
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Status = AcpiDsGetRegionArguments (ObjDesc);
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DEBUG_PRINT_RAW (ACPI_OK, ("."));
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break;
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case ACPI_TYPE_FIELD_UNIT:
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Info->FieldCount++;
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if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
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{
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break;
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}
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Info->FieldInit++;
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Status = AcpiDsGetFieldUnitArguments (ObjDesc);
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DEBUG_PRINT_RAW (ACPI_OK, ("."));
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break;
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default:
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break;
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}
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/*
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* We ignore errors from above, and always return OK, since
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* we don't want to abort the walk on a single error.
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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: The usual "I'm a namespace callback" stuff
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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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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_STATUS Status;
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ACPI_OPERAND_OBJECT *RetObj = NULL;
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ACPI_NAMESPACE_NODE *Node;
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UINT32 Flags;
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ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context;
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FUNCTION_TRACE ("AcpiNsInitOneDevice");
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DEBUG_PRINT_RAW (ACPI_OK, ("."));
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Info->DeviceCount++;
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AcpiCmAcquireMutex (ACPI_MTX_NAMESPACE);
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Node = AcpiNsConvertHandleToEntry (ObjHandle);
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if (!Node)
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{
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AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE);
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return (AE_BAD_PARAMETER);
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}
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AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE);
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/*
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* Run _STA to determine if we can run _INI on the device.
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*/
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Status = AcpiCmExecute_STA (Node, &Flags);
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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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Info->Num_STA++;
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if (!(Flags & 0x01))
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{
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/* don't look at children of a not present device */
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return_ACPI_STATUS(AE_CTRL_DEPTH);
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}
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/*
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* The device is present. Run _INI.
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*/
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Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL);
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if (AE_NOT_FOUND == Status)
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{
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/* No _INI means device requires no initialization */
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}
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else if (ACPI_FAILURE (Status))
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{
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#ifdef ACPI_DEBUG
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NATIVE_CHAR *ScopeName = AcpiNsGetTablePathname (ObjHandle);
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DEBUG_PRINT (ACPI_ERROR, ("%s._INI failed: %s\n",
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ScopeName, AcpiCmFormatException (Status)));
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AcpiCmFree (ScopeName);
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#endif
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return_ACPI_STATUS (Status);
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}
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else
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{
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Info->Num_INI++;
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}
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/*
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* Examine the HID of the device. _HID can be an executable
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* control method -- it simply has to return a string or number
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* containing the HID.
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*/
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if (RetObj)
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{
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AcpiCmRemoveReference (RetObj);
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}
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RetObj = NULL;
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Status = AcpiNsEvaluateRelative (ObjHandle, "_HID", NULL, &RetObj);
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if (AE_NOT_FOUND == Status)
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{
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/* No _HID --> Can't be a PCI root bridge */
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return_ACPI_STATUS (AE_OK);
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}
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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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Info->Num_HID++;
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/*
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* Found an _HID object.
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* Check for a PCI Root Bridge. We need to install the PCI_CONFIG space
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* handler on all PCI Root Bridges found within the namespace
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*
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* A PCI Root Bridge has an HID with the value EISAID("PNP0A03")
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* The HID can be either a number or a string.
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*/
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switch (RetObj->Common.Type)
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{
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case ACPI_TYPE_NUMBER:
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if (RetObj->Number.Value != PCI_ROOT_HID_VALUE)
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{
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goto Cleanup;
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}
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break;
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case ACPI_TYPE_STRING:
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if (STRNCMP (RetObj->String.Pointer, PCI_ROOT_HID_STRING,
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sizeof (PCI_ROOT_HID_STRING)))
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{
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goto Cleanup;
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}
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break;
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default:
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goto Cleanup;
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}
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/*
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* We found a valid PCI_ROOT_HID.
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* The parent of the HID entry is the PCI device; Install the default PCI
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* handler for this PCI device.
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*/
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Info->Num_PCI++;
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if (!(Info->Flags & ACPI_NO_PCI_INIT))
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{
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Status = AcpiInstallAddressSpaceHandler (ObjHandle,
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ADDRESS_SPACE_PCI_CONFIG,
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ACPI_DEFAULT_HANDLER, NULL, NULL);
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}
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Cleanup:
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if (RetObj)
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{
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AcpiCmRemoveReference (RetObj);
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}
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return_ACPI_STATUS (AE_OK);
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}
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