495 lines
17 KiB
C
495 lines
17 KiB
C
/******************************************************************************
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*
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* Module Name: utosi - Support for the _OSI predefined control method
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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 - 2011, 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 __UTOSI_C__
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#include "acpi.h"
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#include "accommon.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME ("utosi")
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/*
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* Strings supported by the _OSI predefined control method (which is
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* implemented internally within this module.)
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*
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* March 2009: Removed "Linux" as this host no longer wants to respond true
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* for this string. Basically, the only safe OS strings are windows-related
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* and in many or most cases represent the only test path within the
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* BIOS-provided ASL code.
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*
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* The last element of each entry is used to track the newest version of
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* Windows that the BIOS has requested.
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*/
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static ACPI_INTERFACE_INFO AcpiDefaultSupportedInterfaces[] =
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{
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/* Operating System Vendor Strings */
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{"Windows 2000", NULL, 0, ACPI_OSI_WIN_2000}, /* Windows 2000 */
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{"Windows 2001", NULL, 0, ACPI_OSI_WIN_XP}, /* Windows XP */
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{"Windows 2001 SP1", NULL, 0, ACPI_OSI_WIN_XP_SP1}, /* Windows XP SP1 */
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{"Windows 2001.1", NULL, 0, ACPI_OSI_WINSRV_2003}, /* Windows Server 2003 */
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{"Windows 2001 SP2", NULL, 0, ACPI_OSI_WIN_XP_SP2}, /* Windows XP SP2 */
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{"Windows 2001.1 SP1", NULL, 0, ACPI_OSI_WINSRV_2003_SP1}, /* Windows Server 2003 SP1 - Added 03/2006 */
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{"Windows 2006", NULL, 0, ACPI_OSI_WIN_VISTA}, /* Windows Vista - Added 03/2006 */
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{"Windows 2006.1", NULL, 0, ACPI_OSI_WINSRV_2008}, /* Windows Server 2008 - Added 09/2009 */
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{"Windows 2006 SP1", NULL, 0, ACPI_OSI_WIN_VISTA_SP1}, /* Windows Vista SP1 - Added 09/2009 */
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{"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2}, /* Windows Vista SP2 - Added 09/2010 */
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{"Windows 2009", NULL, 0, ACPI_OSI_WIN_7}, /* Windows 7 and Server 2008 R2 - Added 09/2009 */
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/* Feature Group Strings */
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{"Extended Address Space Descriptor", NULL, 0, 0}
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/*
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* All "optional" feature group strings (features that are implemented
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* by the host) should be dynamically added by the host via
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* AcpiInstallInterface and should not be manually added here.
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*
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* Examples of optional feature group strings:
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*
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* "Module Device"
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* "Processor Device"
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* "3.0 Thermal Model"
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* "3.0 _SCP Extensions"
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* "Processor Aggregator Device"
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*/
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};
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtInitializeInterfaces
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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: Initialize the global _OSI supported interfaces list
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtInitializeInterfaces (
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void)
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{
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UINT32 i;
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(void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
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AcpiGbl_SupportedInterfaces = AcpiDefaultSupportedInterfaces;
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/* Link the static list of supported interfaces */
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for (i = 0; i < (ACPI_ARRAY_LENGTH (AcpiDefaultSupportedInterfaces) - 1); i++)
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{
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AcpiDefaultSupportedInterfaces[i].Next =
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&AcpiDefaultSupportedInterfaces[(ACPI_SIZE) i + 1];
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}
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AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtInterfaceTerminate
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Delete all interfaces in the global list. Sets
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* AcpiGbl_SupportedInterfaces to NULL.
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*
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******************************************************************************/
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void
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AcpiUtInterfaceTerminate (
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void)
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{
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ACPI_INTERFACE_INFO *NextInterface;
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(void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
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NextInterface = AcpiGbl_SupportedInterfaces;
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while (NextInterface)
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{
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AcpiGbl_SupportedInterfaces = NextInterface->Next;
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/* Only interfaces added at runtime can be freed */
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if (NextInterface->Flags & ACPI_OSI_DYNAMIC)
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{
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ACPI_FREE (NextInterface->Name);
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ACPI_FREE (NextInterface);
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}
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NextInterface = AcpiGbl_SupportedInterfaces;
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}
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AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtInstallInterface
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*
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* PARAMETERS: InterfaceName - The interface to install
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install the interface into the global interface list.
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* Caller MUST hold AcpiGbl_OsiMutex
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtInstallInterface (
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ACPI_STRING InterfaceName)
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{
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ACPI_INTERFACE_INFO *InterfaceInfo;
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/* Allocate info block and space for the name string */
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InterfaceInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_INTERFACE_INFO));
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if (!InterfaceInfo)
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{
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return (AE_NO_MEMORY);
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}
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InterfaceInfo->Name = ACPI_ALLOCATE_ZEROED (ACPI_STRLEN (InterfaceName) + 1);
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if (!InterfaceInfo->Name)
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{
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ACPI_FREE (InterfaceInfo);
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return (AE_NO_MEMORY);
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}
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/* Initialize new info and insert at the head of the global list */
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ACPI_STRCPY (InterfaceInfo->Name, InterfaceName);
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InterfaceInfo->Flags = ACPI_OSI_DYNAMIC;
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InterfaceInfo->Next = AcpiGbl_SupportedInterfaces;
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AcpiGbl_SupportedInterfaces = InterfaceInfo;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtRemoveInterface
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*
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* PARAMETERS: InterfaceName - The interface to remove
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*
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* RETURN: Status
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*
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* DESCRIPTION: Remove the interface from the global interface list.
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* Caller MUST hold AcpiGbl_OsiMutex
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtRemoveInterface (
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ACPI_STRING InterfaceName)
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{
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ACPI_INTERFACE_INFO *PreviousInterface;
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ACPI_INTERFACE_INFO *NextInterface;
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PreviousInterface = NextInterface = AcpiGbl_SupportedInterfaces;
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while (NextInterface)
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{
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if (!ACPI_STRCMP (InterfaceName, NextInterface->Name))
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{
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/* Found: name is in either the static list or was added at runtime */
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if (NextInterface->Flags & ACPI_OSI_DYNAMIC)
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{
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/* Interface was added dynamically, remove and free it */
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if (PreviousInterface == NextInterface)
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{
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AcpiGbl_SupportedInterfaces = NextInterface->Next;
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}
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else
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{
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PreviousInterface->Next = NextInterface->Next;
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}
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ACPI_FREE (NextInterface->Name);
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ACPI_FREE (NextInterface);
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}
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else
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{
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/*
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* Interface is in static list. If marked invalid, then it
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* does not actually exist. Else, mark it invalid.
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*/
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if (NextInterface->Flags & ACPI_OSI_INVALID)
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{
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return (AE_NOT_EXIST);
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}
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NextInterface->Flags |= ACPI_OSI_INVALID;
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}
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return (AE_OK);
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}
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PreviousInterface = NextInterface;
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NextInterface = NextInterface->Next;
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}
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/* Interface was not found */
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return (AE_NOT_EXIST);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtGetInterface
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*
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* PARAMETERS: InterfaceName - The interface to find
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*
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* RETURN: ACPI_INTERFACE_INFO if found. NULL if not found.
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*
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* DESCRIPTION: Search for the specified interface name in the global list.
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* Caller MUST hold AcpiGbl_OsiMutex
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*
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******************************************************************************/
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ACPI_INTERFACE_INFO *
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AcpiUtGetInterface (
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ACPI_STRING InterfaceName)
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{
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ACPI_INTERFACE_INFO *NextInterface;
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NextInterface = AcpiGbl_SupportedInterfaces;
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while (NextInterface)
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{
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if (!ACPI_STRCMP (InterfaceName, NextInterface->Name))
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{
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return (NextInterface);
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}
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NextInterface = NextInterface->Next;
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}
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return (NULL);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtOsiImplementation
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*
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* PARAMETERS: WalkState - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Implementation of the _OSI predefined control method. When
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* an invocation of _OSI is encountered in the system AML,
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* control is transferred to this function.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtOsiImplementation (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT *StringDesc;
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ACPI_OPERAND_OBJECT *ReturnDesc;
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ACPI_INTERFACE_INFO *InterfaceInfo;
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ACPI_INTERFACE_HANDLER InterfaceHandler;
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UINT32 ReturnValue;
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ACPI_FUNCTION_TRACE (UtOsiImplementation);
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/* Validate the string input argument (from the AML caller) */
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StringDesc = WalkState->Arguments[0].Object;
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if (!StringDesc ||
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(StringDesc->Common.Type != ACPI_TYPE_STRING))
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{
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return_ACPI_STATUS (AE_TYPE);
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}
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/* Create a return object */
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ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!ReturnDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Default return value is 0, NOT SUPPORTED */
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ReturnValue = 0;
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(void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
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/* Lookup the interface in the global _OSI list */
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InterfaceInfo = AcpiUtGetInterface (StringDesc->String.Pointer);
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if (InterfaceInfo &&
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!(InterfaceInfo->Flags & ACPI_OSI_INVALID))
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{
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/*
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* The interface is supported.
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* Update the OsiData if necessary. We keep track of the latest
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* version of Windows that has been requested by the BIOS.
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*/
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if (InterfaceInfo->Value > AcpiGbl_OsiData)
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{
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AcpiGbl_OsiData = InterfaceInfo->Value;
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}
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ReturnValue = ACPI_UINT32_MAX;
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}
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AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
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/*
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* Invoke an optional _OSI interface handler. The host OS may wish
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* to do some interface-specific handling. For example, warn about
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* certain interfaces or override the true/false support value.
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*/
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InterfaceHandler = AcpiGbl_InterfaceHandler;
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if (InterfaceHandler)
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{
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ReturnValue = InterfaceHandler (
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StringDesc->String.Pointer, ReturnValue);
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}
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO,
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"ACPI: BIOS _OSI(\"%s\") is %ssupported\n",
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StringDesc->String.Pointer, ReturnValue == 0 ? "not " : ""));
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/* Complete the return object */
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ReturnDesc->Integer.Value = ReturnValue;
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WalkState->ReturnDesc = ReturnDesc;
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return_ACPI_STATUS (AE_OK);
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}
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