| /****************************************************************************** |
| * |
| * Module Name: utosi - Support for the _OSI predefined control method |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME ("utosi") |
| |
| |
| /****************************************************************************** |
| * |
| * ACPICA policy for new _OSI strings: |
| * |
| * It is the stated policy of ACPICA that new _OSI strings will be integrated |
| * into this module as soon as possible after they are defined. It is strongly |
| * recommended that all ACPICA hosts mirror this policy and integrate any |
| * changes to this module as soon as possible. There are several historical |
| * reasons behind this policy: |
| * |
| * 1) New BIOSs tend to test only the case where the host responds TRUE to |
| * the latest version of Windows, which would respond to the latest/newest |
| * _OSI string. Not responding TRUE to the latest version of Windows will |
| * risk executing untested code paths throughout the DSDT and SSDTs. |
| * |
| * 2) If a new _OSI string is recognized only after a significant delay, this |
| * has the potential to cause problems on existing working machines because |
| * of the possibility that a new and different path through the ASL code |
| * will be executed. |
| * |
| * 3) New _OSI strings are tending to come out about once per year. A delay |
| * in recognizing a new string for a significant amount of time risks the |
| * release of another string which only compounds the initial problem. |
| * |
| *****************************************************************************/ |
| |
| |
| /* |
| * Strings supported by the _OSI predefined control method (which is |
| * implemented internally within this module.) |
| * |
| * March 2009: Removed "Linux" as this host no longer wants to respond true |
| * for this string. Basically, the only safe OS strings are windows-related |
| * and in many or most cases represent the only test path within the |
| * BIOS-provided ASL code. |
| * |
| * The last element of each entry is used to track the newest version of |
| * Windows that the BIOS has requested. |
| */ |
| static ACPI_INTERFACE_INFO AcpiDefaultSupportedInterfaces[] = |
| { |
| /* Operating System Vendor Strings */ |
| |
| {"Windows 2000", NULL, 0, ACPI_OSI_WIN_2000}, /* Windows 2000 */ |
| {"Windows 2001", NULL, 0, ACPI_OSI_WIN_XP}, /* Windows XP */ |
| {"Windows 2001 SP1", NULL, 0, ACPI_OSI_WIN_XP_SP1}, /* Windows XP SP1 */ |
| {"Windows 2001.1", NULL, 0, ACPI_OSI_WINSRV_2003}, /* Windows Server 2003 */ |
| {"Windows 2001 SP2", NULL, 0, ACPI_OSI_WIN_XP_SP2}, /* Windows XP SP2 */ |
| {"Windows 2001.1 SP1", NULL, 0, ACPI_OSI_WINSRV_2003_SP1}, /* Windows Server 2003 SP1 - Added 03/2006 */ |
| {"Windows 2006", NULL, 0, ACPI_OSI_WIN_VISTA}, /* Windows Vista - Added 03/2006 */ |
| {"Windows 2006.1", NULL, 0, ACPI_OSI_WINSRV_2008}, /* Windows Server 2008 - Added 09/2009 */ |
| {"Windows 2006 SP1", NULL, 0, ACPI_OSI_WIN_VISTA_SP1}, /* Windows Vista SP1 - Added 09/2009 */ |
| {"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2}, /* Windows Vista SP2 - Added 09/2010 */ |
| {"Windows 2009", NULL, 0, ACPI_OSI_WIN_7}, /* Windows 7 and Server 2008 R2 - Added 09/2009 */ |
| {"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and Server 2012 - Added 08/2012 */ |
| {"Windows 2013", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8.1 and Server 2012 R2 - Added 01/2014 */ |
| {"Windows 2015", NULL, 0, ACPI_OSI_WIN_10}, /* Windows 10 - Added 03/2015 */ |
| |
| /* Feature Group Strings */ |
| |
| {"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0}, |
| |
| /* |
| * All "optional" feature group strings (features that are implemented |
| * by the host) should be dynamically modified to VALID by the host via |
| * AcpiInstallInterface or AcpiUpdateInterfaces. Such optional feature |
| * group strings are set as INVALID by default here. |
| */ |
| |
| {"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, |
| {"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, |
| {"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, |
| {"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, |
| {"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0} |
| }; |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtInitializeInterfaces |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize the global _OSI supported interfaces list |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtInitializeInterfaces ( |
| void) |
| { |
| ACPI_STATUS Status; |
| UINT32 i; |
| |
| |
| Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| AcpiGbl_SupportedInterfaces = AcpiDefaultSupportedInterfaces; |
| |
| /* Link the static list of supported interfaces */ |
| |
| for (i = 0; |
| i < (ACPI_ARRAY_LENGTH (AcpiDefaultSupportedInterfaces) - 1); |
| i++) |
| { |
| AcpiDefaultSupportedInterfaces[i].Next = |
| &AcpiDefaultSupportedInterfaces[(ACPI_SIZE) i + 1]; |
| } |
| |
| AcpiOsReleaseMutex (AcpiGbl_OsiMutex); |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtInterfaceTerminate |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Delete all interfaces in the global list. Sets |
| * AcpiGbl_SupportedInterfaces to NULL. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtInterfaceTerminate ( |
| void) |
| { |
| ACPI_STATUS Status; |
| ACPI_INTERFACE_INFO *NextInterface; |
| |
| |
| Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| NextInterface = AcpiGbl_SupportedInterfaces; |
| while (NextInterface) |
| { |
| AcpiGbl_SupportedInterfaces = NextInterface->Next; |
| |
| if (NextInterface->Flags & ACPI_OSI_DYNAMIC) |
| { |
| /* Only interfaces added at runtime can be freed */ |
| |
| ACPI_FREE (NextInterface->Name); |
| ACPI_FREE (NextInterface); |
| } |
| else |
| { |
| /* Interface is in static list. Reset it to invalid or valid. */ |
| |
| if (NextInterface->Flags & ACPI_OSI_DEFAULT_INVALID) |
| { |
| NextInterface->Flags |= ACPI_OSI_INVALID; |
| } |
| else |
| { |
| NextInterface->Flags &= ~ACPI_OSI_INVALID; |
| } |
| } |
| |
| NextInterface = AcpiGbl_SupportedInterfaces; |
| } |
| |
| AcpiOsReleaseMutex (AcpiGbl_OsiMutex); |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtInstallInterface |
| * |
| * PARAMETERS: InterfaceName - The interface to install |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Install the interface into the global interface list. |
| * Caller MUST hold AcpiGbl_OsiMutex |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtInstallInterface ( |
| ACPI_STRING InterfaceName) |
| { |
| ACPI_INTERFACE_INFO *InterfaceInfo; |
| |
| |
| /* Allocate info block and space for the name string */ |
| |
| InterfaceInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_INTERFACE_INFO)); |
| if (!InterfaceInfo) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| InterfaceInfo->Name = ACPI_ALLOCATE_ZEROED (strlen (InterfaceName) + 1); |
| if (!InterfaceInfo->Name) |
| { |
| ACPI_FREE (InterfaceInfo); |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Initialize new info and insert at the head of the global list */ |
| |
| strcpy (InterfaceInfo->Name, InterfaceName); |
| InterfaceInfo->Flags = ACPI_OSI_DYNAMIC; |
| InterfaceInfo->Next = AcpiGbl_SupportedInterfaces; |
| |
| AcpiGbl_SupportedInterfaces = InterfaceInfo; |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtRemoveInterface |
| * |
| * PARAMETERS: InterfaceName - The interface to remove |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Remove the interface from the global interface list. |
| * Caller MUST hold AcpiGbl_OsiMutex |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtRemoveInterface ( |
| ACPI_STRING InterfaceName) |
| { |
| ACPI_INTERFACE_INFO *PreviousInterface; |
| ACPI_INTERFACE_INFO *NextInterface; |
| |
| |
| PreviousInterface = NextInterface = AcpiGbl_SupportedInterfaces; |
| while (NextInterface) |
| { |
| if (!strcmp (InterfaceName, NextInterface->Name)) |
| { |
| /* |
| * Found: name is in either the static list |
| * or was added at runtime |
| */ |
| if (NextInterface->Flags & ACPI_OSI_DYNAMIC) |
| { |
| /* Interface was added dynamically, remove and free it */ |
| |
| if (PreviousInterface == NextInterface) |
| { |
| AcpiGbl_SupportedInterfaces = NextInterface->Next; |
| } |
| else |
| { |
| PreviousInterface->Next = NextInterface->Next; |
| } |
| |
| ACPI_FREE (NextInterface->Name); |
| ACPI_FREE (NextInterface); |
| } |
| else |
| { |
| /* |
| * Interface is in static list. If marked invalid, then |
| * it does not actually exist. Else, mark it invalid. |
| */ |
| if (NextInterface->Flags & ACPI_OSI_INVALID) |
| { |
| return (AE_NOT_EXIST); |
| } |
| |
| NextInterface->Flags |= ACPI_OSI_INVALID; |
| } |
| |
| return (AE_OK); |
| } |
| |
| PreviousInterface = NextInterface; |
| NextInterface = NextInterface->Next; |
| } |
| |
| /* Interface was not found */ |
| |
| return (AE_NOT_EXIST); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtUpdateInterfaces |
| * |
| * PARAMETERS: Action - Actions to be performed during the |
| * update |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor |
| * strings or/and feature group strings. |
| * Caller MUST hold AcpiGbl_OsiMutex |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtUpdateInterfaces ( |
| UINT8 Action) |
| { |
| ACPI_INTERFACE_INFO *NextInterface; |
| |
| |
| NextInterface = AcpiGbl_SupportedInterfaces; |
| while (NextInterface) |
| { |
| if (((NextInterface->Flags & ACPI_OSI_FEATURE) && |
| (Action & ACPI_FEATURE_STRINGS)) || |
| (!(NextInterface->Flags & ACPI_OSI_FEATURE) && |
| (Action & ACPI_VENDOR_STRINGS))) |
| { |
| if (Action & ACPI_DISABLE_INTERFACES) |
| { |
| /* Mark the interfaces as invalid */ |
| |
| NextInterface->Flags |= ACPI_OSI_INVALID; |
| } |
| else |
| { |
| /* Mark the interfaces as valid */ |
| |
| NextInterface->Flags &= ~ACPI_OSI_INVALID; |
| } |
| } |
| |
| NextInterface = NextInterface->Next; |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtGetInterface |
| * |
| * PARAMETERS: InterfaceName - The interface to find |
| * |
| * RETURN: ACPI_INTERFACE_INFO if found. NULL if not found. |
| * |
| * DESCRIPTION: Search for the specified interface name in the global list. |
| * Caller MUST hold AcpiGbl_OsiMutex |
| * |
| ******************************************************************************/ |
| |
| ACPI_INTERFACE_INFO * |
| AcpiUtGetInterface ( |
| ACPI_STRING InterfaceName) |
| { |
| ACPI_INTERFACE_INFO *NextInterface; |
| |
| |
| NextInterface = AcpiGbl_SupportedInterfaces; |
| while (NextInterface) |
| { |
| if (!strcmp (InterfaceName, NextInterface->Name)) |
| { |
| return (NextInterface); |
| } |
| |
| NextInterface = NextInterface->Next; |
| } |
| |
| return (NULL); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtOsiImplementation |
| * |
| * PARAMETERS: WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Implementation of the _OSI predefined control method. When |
| * an invocation of _OSI is encountered in the system AML, |
| * control is transferred to this function. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtOsiImplementation ( |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_OPERAND_OBJECT *StringDesc; |
| ACPI_OPERAND_OBJECT *ReturnDesc; |
| ACPI_INTERFACE_INFO *InterfaceInfo; |
| ACPI_INTERFACE_HANDLER InterfaceHandler; |
| ACPI_STATUS Status; |
| UINT32 ReturnValue; |
| |
| |
| ACPI_FUNCTION_TRACE (UtOsiImplementation); |
| |
| |
| /* Validate the string input argument (from the AML caller) */ |
| |
| StringDesc = WalkState->Arguments[0].Object; |
| if (!StringDesc || |
| (StringDesc->Common.Type != ACPI_TYPE_STRING)) |
| { |
| return_ACPI_STATUS (AE_TYPE); |
| } |
| |
| /* Create a return object */ |
| |
| ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); |
| if (!ReturnDesc) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* Default return value is 0, NOT SUPPORTED */ |
| |
| ReturnValue = 0; |
| Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); |
| if (ACPI_FAILURE (Status)) |
| { |
| AcpiUtRemoveReference (ReturnDesc); |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Lookup the interface in the global _OSI list */ |
| |
| InterfaceInfo = AcpiUtGetInterface (StringDesc->String.Pointer); |
| if (InterfaceInfo && |
| !(InterfaceInfo->Flags & ACPI_OSI_INVALID)) |
| { |
| /* |
| * The interface is supported. |
| * Update the OsiData if necessary. We keep track of the latest |
| * version of Windows that has been requested by the BIOS. |
| */ |
| if (InterfaceInfo->Value > AcpiGbl_OsiData) |
| { |
| AcpiGbl_OsiData = InterfaceInfo->Value; |
| } |
| |
| ReturnValue = ACPI_UINT32_MAX; |
| } |
| |
| AcpiOsReleaseMutex (AcpiGbl_OsiMutex); |
| |
| /* |
| * Invoke an optional _OSI interface handler. The host OS may wish |
| * to do some interface-specific handling. For example, warn about |
| * certain interfaces or override the true/false support value. |
| */ |
| InterfaceHandler = AcpiGbl_InterfaceHandler; |
| if (InterfaceHandler) |
| { |
| ReturnValue = InterfaceHandler ( |
| StringDesc->String.Pointer, ReturnValue); |
| } |
| |
| ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, |
| "ACPI: BIOS _OSI(\"%s\") is %ssupported\n", |
| StringDesc->String.Pointer, ReturnValue == 0 ? "not " : "")); |
| |
| /* Complete the return object */ |
| |
| ReturnDesc->Integer.Value = ReturnValue; |
| WalkState->ReturnDesc = ReturnDesc; |
| return_ACPI_STATUS (AE_OK); |
| } |
