505 lines
15 KiB
C
505 lines
15 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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* Copyright (C) 2000 - 2013, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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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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{"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and Server 2012 - Added 08/2012 */
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/* Feature Group Strings */
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{"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 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 modified to VALID by the host via
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* AcpiInstallInterface or AcpiUpdateInterfaces. Such optional feature
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* group strings are set as INVALID by default here.
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*/
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{"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
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{"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
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{"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
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{"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
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{"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}
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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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ACPI_STATUS Status;
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UINT32 i;
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Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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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: Status
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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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ACPI_STATUS
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AcpiUtInterfaceTerminate (
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void)
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{
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ACPI_STATUS Status;
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ACPI_INTERFACE_INFO *NextInterface;
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Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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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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if (NextInterface->Flags & ACPI_OSI_DYNAMIC)
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{
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/* Only interfaces added at runtime can be freed */
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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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/* Interface is in static list. Reset it to invalid or valid. */
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if (NextInterface->Flags & ACPI_OSI_DEFAULT_INVALID)
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{
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NextInterface->Flags |= ACPI_OSI_INVALID;
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}
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else
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{
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NextInterface->Flags &= ~ACPI_OSI_INVALID;
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}
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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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return (AE_OK);
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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: AcpiUtUpdateInterfaces
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*
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* PARAMETERS: Action - Actions to be performed during the
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* update
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*
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* RETURN: Status
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*
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* DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
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* strings or/and feature group strings.
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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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AcpiUtUpdateInterfaces (
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UINT8 Action)
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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 (((NextInterface->Flags & ACPI_OSI_FEATURE) &&
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(Action & ACPI_FEATURE_STRINGS)) ||
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(!(NextInterface->Flags & ACPI_OSI_FEATURE) &&
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(Action & ACPI_VENDOR_STRINGS)))
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{
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if (Action & ACPI_DISABLE_INTERFACES)
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{
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/* Mark the interfaces as invalid */
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NextInterface->Flags |= ACPI_OSI_INVALID;
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}
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else
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{
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/* Mark the interfaces as valid */
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NextInterface->Flags &= ~ACPI_OSI_INVALID;
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}
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}
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NextInterface = NextInterface->Next;
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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: 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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ACPI_STATUS Status;
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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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Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
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if (ACPI_FAILURE (Status))
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{
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AcpiUtRemoveReference (ReturnDesc);
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return_ACPI_STATUS (Status);
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}
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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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