538 lines
16 KiB
C
538 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: cmxface - External interfaces for "global" ACPI functions
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* $Revision: 64 $
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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, 2000, 2001, 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 __CMXFACE_C__
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#include "acpi.h"
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#include "acevents.h"
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#include "achware.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#include "amlcode.h"
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#include "acdebug.h"
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#define _COMPONENT MISCELLANEOUS
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MODULE_NAME ("cmxface")
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/*******************************************************************************
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*
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* FUNCTION: AcpiInitializeSubsystem
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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: Initializes all global variables. This is the first function
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* called, so any early initialization belongs here.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiInitializeSubsystem (
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void)
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{
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ACPI_STATUS Status;
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FUNCTION_TRACE ("AcpiInitializeSubsystem");
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/* Initialize all globals used by the subsystem */
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AcpiCmInitGlobals ();
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/* Initialize the OS-Dependent layer */
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Status = AcpiOsInitialize ();
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("OSD failed to initialize, %s\n",
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AcpiCmFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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/* Create the default mutex objects */
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Status = AcpiCmMutexInitialize ();
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("Global mutex creation failure, %s\n",
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AcpiCmFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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/*
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* Initialize the namespace manager and
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* the root of the namespace tree
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*/
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Status = AcpiNsRootInitialize ();
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if (ACPI_FAILURE (Status))
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{
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REPORT_ERROR (("Namespace initialization failure, %s\n",
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AcpiCmFormatException (Status)));
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return_ACPI_STATUS (Status);
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}
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/* If configured, initialize the AML debugger */
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DEBUGGER_EXEC (AcpiDbInitialize ());
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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: AcpiEnableSubsystem
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*
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* PARAMETERS: Flags - Init/enable Options
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*
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* RETURN: Status
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*
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* DESCRIPTION: Completes the subsystem initialization including hardware.
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* Puts system into ACPI mode if it isn't already.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnableSubsystem (
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UINT32 Flags)
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{
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ACPI_STATUS Status = AE_OK;
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FUNCTION_TRACE ("AcpiEnableSubsystem");
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/* Sanity check the FADT for valid values */
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Status = AcpiCmValidateFadt ();
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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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* Install the default OpRegion handlers. These are
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* installed unless other handlers have already been
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* installed via the InstallAddressSpaceHandler interface
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*/
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if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
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{
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DEBUG_PRINT (TRACE_EXEC, ("[Init] Installing default address space handlers\n"));
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Status = AcpiEvInstallDefaultAddressSpaceHandlers ();
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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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* We must initialize the hardware before we can enable ACPI.
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*/
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if (!(Flags & ACPI_NO_HARDWARE_INIT))
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{
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DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI hardware\n"));
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Status = AcpiHwInitialize ();
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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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* Enable ACPI on this platform
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*/
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if (!(Flags & ACPI_NO_ACPI_ENABLE))
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{
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DEBUG_PRINT (TRACE_EXEC, ("[Init] Going into ACPI mode\n"));
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Status = AcpiEnable ();
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if (ACPI_FAILURE (Status))
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{
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DEBUG_PRINT(ACPI_WARN, ("AcpiEnable failed.\n"));
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* Note:
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* We must have the hardware AND events initialized before we can execute
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* ANY control methods SAFELY. Any control method can require ACPI hardware
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* support, so the hardware MUST be initialized before execution!
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*/
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if (!(Flags & ACPI_NO_EVENT_INIT))
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{
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DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI events\n"));
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Status = AcpiEvInitialize ();
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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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* Initialize all device objects in the namespace
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* This runs the _STA and _INI methods.
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*/
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if (!(Flags & ACPI_NO_DEVICE_INIT))
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{
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DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI Devices\n"));
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Status = AcpiNsInitializeDevices ();
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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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* Initialize the objects that remain uninitialized. This
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* runs the executable AML that is part of the declaration of OpRegions
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* and Fields.
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*/
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if (!(Flags & ACPI_NO_OBJECT_INIT))
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{
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DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI Objects\n"));
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Status = AcpiNsInitializeObjects ();
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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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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTerminate
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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: Shutdown the ACPI subsystem. Release all resources.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTerminate (void)
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{
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FUNCTION_TRACE ("AcpiTerminate");
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/* Terminate the AML Debuger if present */
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DEBUGGER_EXEC(AcpiGbl_DbTerminateThreads = TRUE);
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/* TBD: [Investigate] This is no longer needed?*/
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/* AcpiCmReleaseMutex (ACPI_MTX_DEBUG_CMD_READY); */
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/* Shutdown and free all resources */
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AcpiCmSubsystemShutdown ();
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/* Free the mutex objects */
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AcpiCmMutexTerminate ();
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/* Now we can shutdown the OS-dependent layer */
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AcpiOsTerminate ();
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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: AcpiGetSystemInfo
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*
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* PARAMETERS: OutBuffer - a pointer to a buffer to receive the
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* resources for the device
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* BufferLength - the number of bytes available in the buffer
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*
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* RETURN: Status - the status of the call
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*
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* DESCRIPTION: This function is called to get information about the current
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* state of the ACPI subsystem. It will return system information
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* in the OutBuffer.
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*
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* If the function fails an appropriate status will be returned
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* and the value of OutBuffer is undefined.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetSystemInfo (
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ACPI_BUFFER *OutBuffer)
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{
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ACPI_SYSTEM_INFO *InfoPtr;
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UINT32 i;
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FUNCTION_TRACE ("AcpiGetSystemInfo");
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/*
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* Must have a valid buffer
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*/
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if ((!OutBuffer) ||
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(!OutBuffer->Pointer))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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if (OutBuffer->Length < sizeof (ACPI_SYSTEM_INFO))
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{
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/*
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* Caller's buffer is too small
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*/
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OutBuffer->Length = sizeof (ACPI_SYSTEM_INFO);
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return_ACPI_STATUS (AE_BUFFER_OVERFLOW);
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}
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/*
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* Set return length and get data
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*/
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OutBuffer->Length = sizeof (ACPI_SYSTEM_INFO);
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InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
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InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
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/* System flags (ACPI capabilities) */
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InfoPtr->Flags = AcpiGbl_SystemFlags;
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/* Timer resolution - 24 or 32 bits */
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if (!AcpiGbl_FADT)
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{
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InfoPtr->TimerResolution = 0;
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}
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else if (AcpiGbl_FADT->TmrValExt == 0)
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{
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InfoPtr->TimerResolution = 24;
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}
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else
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{
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InfoPtr->TimerResolution = 32;
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}
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/* Clear the reserved fields */
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InfoPtr->Reserved1 = 0;
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InfoPtr->Reserved2 = 0;
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/* Current debug levels */
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InfoPtr->DebugLayer = AcpiDbgLayer;
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InfoPtr->DebugLevel = AcpiDbgLevel;
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/* Current status of the ACPI tables, per table type */
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InfoPtr->NumTableTypes = NUM_ACPI_TABLES;
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for (i = 0; i < NUM_ACPI_TABLES; i++)
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{
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InfoPtr->TableInfo[i].Count = AcpiGbl_AcpiTables[i].Count;
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}
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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: AcpiFormatException
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*
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* PARAMETERS: OutBuffer - a pointer to a buffer to receive the
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* exception name
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*
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* RETURN: Status - the status of the call
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*
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* DESCRIPTION: This function translates an ACPI exception into an ASCII string.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiFormatException (
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ACPI_STATUS Exception,
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ACPI_BUFFER *OutBuffer)
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{
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UINT32 Length;
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NATIVE_CHAR *FormattedException;
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FUNCTION_TRACE ("AcpiFormatException");
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/*
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* Must have a valid buffer
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*/
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if ((!OutBuffer) ||
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(!OutBuffer->Pointer))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Convert the exception code (Handles bad exception codes) */
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FormattedException = AcpiCmFormatException (Exception);
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/*
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* Get length of string and check if it will fit in caller's buffer
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*/
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Length = STRLEN (FormattedException);
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if (OutBuffer->Length < Length)
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{
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OutBuffer->Length = Length;
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return_ACPI_STATUS (AE_BUFFER_OVERFLOW);
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}
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/* Copy the string, all done */
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STRCPY (OutBuffer->Pointer, FormattedException);
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return_ACPI_STATUS (AE_OK);
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}
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