/****************************************************************************** * * Module Name: utosi - Support for the _OSI predefined control method * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2012, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * *****************************************************************************/ #define __UTOSI_C__ #include "acpi.h" #include "accommon.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("utosi") /* * 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 */ /* Feature Group Strings */ {"Extended Address Space Descriptor", NULL, 0, 0} /* * All "optional" feature group strings (features that are implemented * by the host) should be dynamically added by the host via * AcpiInstallInterface and should not be manually added here. * * Examples of optional feature group strings: * * "Module Device" * "Processor Device" * "3.0 Thermal Model" * "3.0 _SCP Extensions" * "Processor Aggregator Device" */ }; /******************************************************************************* * * FUNCTION: AcpiUtInitializeInterfaces * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Initialize the global _OSI supported interfaces list * ******************************************************************************/ ACPI_STATUS AcpiUtInitializeInterfaces ( void) { UINT32 i; (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); 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: None * * DESCRIPTION: Delete all interfaces in the global list. Sets * AcpiGbl_SupportedInterfaces to NULL. * ******************************************************************************/ void AcpiUtInterfaceTerminate ( void) { ACPI_INTERFACE_INFO *NextInterface; (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); NextInterface = AcpiGbl_SupportedInterfaces; while (NextInterface) { AcpiGbl_SupportedInterfaces = NextInterface->Next; /* Only interfaces added at runtime can be freed */ if (NextInterface->Flags & ACPI_OSI_DYNAMIC) { ACPI_FREE (NextInterface->Name); ACPI_FREE (NextInterface); } NextInterface = AcpiGbl_SupportedInterfaces; } AcpiOsReleaseMutex (AcpiGbl_OsiMutex); } /******************************************************************************* * * 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 (ACPI_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 */ ACPI_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 (!ACPI_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: 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 (!ACPI_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; 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; (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); /* 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); }