/****************************************************************************** * * Module Name: utxface - External interfaces, miscellaneous utility functions * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2018, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * 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. * * 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 MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * 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 DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #define EXPORT_ACPI_INTERFACES #include "acpi.h" #include "accommon.h" #include "acdebug.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("utxface") /******************************************************************************* * * FUNCTION: AcpiTerminate * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources. * ******************************************************************************/ ACPI_STATUS ACPI_INIT_FUNCTION AcpiTerminate ( void) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiTerminate); /* Shutdown and free all resources */ AcpiUtSubsystemShutdown (); /* Free the mutex objects */ AcpiUtMutexTerminate (); /* Now we can shutdown the OS-dependent layer */ Status = AcpiOsTerminate (); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL_INIT (AcpiTerminate) #ifndef ACPI_ASL_COMPILER /******************************************************************************* * * FUNCTION: AcpiSubsystemStatus * * PARAMETERS: None * * RETURN: Status of the ACPI subsystem * * DESCRIPTION: Other drivers that use the ACPI subsystem should call this * before making any other calls, to ensure the subsystem * initialized successfully. * ******************************************************************************/ ACPI_STATUS AcpiSubsystemStatus ( void) { if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK) { return (AE_OK); } else { return (AE_ERROR); } } ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus) /******************************************************************************* * * FUNCTION: AcpiGetSystemInfo * * PARAMETERS: OutBuffer - A buffer to receive the resources for the * device * * RETURN: Status - the status of the call * * DESCRIPTION: This function is called to get information about the current * state of the ACPI subsystem. It will return system information * in the OutBuffer. * * If the function fails an appropriate status will be returned * and the value of OutBuffer is undefined. * ******************************************************************************/ ACPI_STATUS AcpiGetSystemInfo ( ACPI_BUFFER *OutBuffer) { ACPI_SYSTEM_INFO *InfoPtr; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiGetSystemInfo); /* Parameter validation */ Status = AcpiUtValidateBuffer (OutBuffer); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Validate/Allocate/Clear caller buffer */ Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO)); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Populate the return buffer */ InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer; InfoPtr->AcpiCaVersion = ACPI_CA_VERSION; /* System flags (ACPI capabilities) */ InfoPtr->Flags = ACPI_SYS_MODE_ACPI; /* Timer resolution - 24 or 32 bits */ if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) { InfoPtr->TimerResolution = 24; } else { InfoPtr->TimerResolution = 32; } /* Clear the reserved fields */ InfoPtr->Reserved1 = 0; InfoPtr->Reserved2 = 0; /* Current debug levels */ InfoPtr->DebugLayer = AcpiDbgLayer; InfoPtr->DebugLevel = AcpiDbgLevel; return_ACPI_STATUS (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiGetSystemInfo) /******************************************************************************* * * FUNCTION: AcpiGetStatistics * * PARAMETERS: Stats - Where the statistics are returned * * RETURN: Status - the status of the call * * DESCRIPTION: Get the contents of the various system counters * ******************************************************************************/ ACPI_STATUS AcpiGetStatistics ( ACPI_STATISTICS *Stats) { ACPI_FUNCTION_TRACE (AcpiGetStatistics); /* Parameter validation */ if (!Stats) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Various interrupt-based event counters */ Stats->SciCount = AcpiSciCount; Stats->GpeCount = AcpiGpeCount; memcpy (Stats->FixedEventCount, AcpiFixedEventCount, sizeof (AcpiFixedEventCount)); /* Other counters */ Stats->MethodCount = AcpiMethodCount; return_ACPI_STATUS (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiGetStatistics) /***************************************************************************** * * FUNCTION: AcpiInstallInitializationHandler * * PARAMETERS: Handler - Callback procedure * Function - Not (currently) used, see below * * RETURN: Status * * DESCRIPTION: Install an initialization handler * * TBD: When a second function is added, must save the Function also. * ****************************************************************************/ ACPI_STATUS AcpiInstallInitializationHandler ( ACPI_INIT_HANDLER Handler, UINT32 Function) { if (!Handler) { return (AE_BAD_PARAMETER); } if (AcpiGbl_InitHandler) { return (AE_ALREADY_EXISTS); } AcpiGbl_InitHandler = Handler; return (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiInstallInitializationHandler) /***************************************************************************** * * FUNCTION: AcpiPurgeCachedObjects * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Empty all caches (delete the cached objects) * ****************************************************************************/ ACPI_STATUS AcpiPurgeCachedObjects ( void) { ACPI_FUNCTION_TRACE (AcpiPurgeCachedObjects); (void) AcpiOsPurgeCache (AcpiGbl_StateCache); (void) AcpiOsPurgeCache (AcpiGbl_OperandCache); (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache); (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache); return_ACPI_STATUS (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiPurgeCachedObjects) /***************************************************************************** * * FUNCTION: AcpiInstallInterface * * PARAMETERS: InterfaceName - The interface to install * * RETURN: Status * * DESCRIPTION: Install an _OSI interface to the global list * ****************************************************************************/ ACPI_STATUS AcpiInstallInterface ( ACPI_STRING InterfaceName) { ACPI_STATUS Status; ACPI_INTERFACE_INFO *InterfaceInfo; /* Parameter validation */ if (!InterfaceName || (strlen (InterfaceName) == 0)) { return (AE_BAD_PARAMETER); } Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE (Status)) { return (Status); } /* Check if the interface name is already in the global list */ InterfaceInfo = AcpiUtGetInterface (InterfaceName); if (InterfaceInfo) { /* * The interface already exists in the list. This is OK if the * interface has been marked invalid -- just clear the bit. */ if (InterfaceInfo->Flags & ACPI_OSI_INVALID) { InterfaceInfo->Flags &= ~ACPI_OSI_INVALID; Status = AE_OK; } else { Status = AE_ALREADY_EXISTS; } } else { /* New interface name, install into the global list */ Status = AcpiUtInstallInterface (InterfaceName); } AcpiOsReleaseMutex (AcpiGbl_OsiMutex); return (Status); } ACPI_EXPORT_SYMBOL (AcpiInstallInterface) /***************************************************************************** * * FUNCTION: AcpiRemoveInterface * * PARAMETERS: InterfaceName - The interface to remove * * RETURN: Status * * DESCRIPTION: Remove an _OSI interface from the global list * ****************************************************************************/ ACPI_STATUS AcpiRemoveInterface ( ACPI_STRING InterfaceName) { ACPI_STATUS Status; /* Parameter validation */ if (!InterfaceName || (strlen (InterfaceName) == 0)) { return (AE_BAD_PARAMETER); } Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE (Status)) { return (Status); } Status = AcpiUtRemoveInterface (InterfaceName); AcpiOsReleaseMutex (AcpiGbl_OsiMutex); return (Status); } ACPI_EXPORT_SYMBOL (AcpiRemoveInterface) /***************************************************************************** * * FUNCTION: AcpiInstallInterfaceHandler * * PARAMETERS: Handler - The _OSI interface handler to install * NULL means "remove existing handler" * * RETURN: Status * * DESCRIPTION: Install a handler for the predefined _OSI ACPI method. * invoked during execution of the internal implementation of * _OSI. A NULL handler simply removes any existing handler. * ****************************************************************************/ ACPI_STATUS AcpiInstallInterfaceHandler ( ACPI_INTERFACE_HANDLER Handler) { ACPI_STATUS Status; Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE (Status)) { return (Status); } if (Handler && AcpiGbl_InterfaceHandler) { Status = AE_ALREADY_EXISTS; } else { AcpiGbl_InterfaceHandler = Handler; } AcpiOsReleaseMutex (AcpiGbl_OsiMutex); return (Status); } ACPI_EXPORT_SYMBOL (AcpiInstallInterfaceHandler) /***************************************************************************** * * FUNCTION: AcpiUpdateInterfaces * * PARAMETERS: Action - Actions to be performed during the * update * * RETURN: Status * * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor * string or/and feature group strings. * ****************************************************************************/ ACPI_STATUS AcpiUpdateInterfaces ( UINT8 Action) { ACPI_STATUS Status; Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE (Status)) { return (Status); } Status = AcpiUtUpdateInterfaces (Action); AcpiOsReleaseMutex (AcpiGbl_OsiMutex); return (Status); } /***************************************************************************** * * FUNCTION: AcpiCheckAddressRange * * PARAMETERS: SpaceId - Address space ID * Address - Start address * Length - Length * Warn - TRUE if warning on overlap desired * * RETURN: Count of the number of conflicts detected. * * DESCRIPTION: Check if the input address range overlaps any of the * ASL operation region address ranges. * ****************************************************************************/ UINT32 AcpiCheckAddressRange ( ACPI_ADR_SPACE_TYPE SpaceId, ACPI_PHYSICAL_ADDRESS Address, ACPI_SIZE Length, BOOLEAN Warn) { UINT32 Overlaps; ACPI_STATUS Status; Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (0); } Overlaps = AcpiUtCheckAddressRange (SpaceId, Address, (UINT32) Length, Warn); (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return (Overlaps); } ACPI_EXPORT_SYMBOL (AcpiCheckAddressRange) #endif /* !ACPI_ASL_COMPILER */ /******************************************************************************* * * FUNCTION: AcpiDecodePldBuffer * * PARAMETERS: InBuffer - Buffer returned by _PLD method * Length - Length of the InBuffer * ReturnBuffer - Where the decode buffer is returned * * RETURN: Status and the decoded _PLD buffer. User must deallocate * the buffer via ACPI_FREE. * * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into * a local struct that is much more useful to an ACPI driver. * ******************************************************************************/ ACPI_STATUS AcpiDecodePldBuffer ( UINT8 *InBuffer, ACPI_SIZE Length, ACPI_PLD_INFO **ReturnBuffer) { ACPI_PLD_INFO *PldInfo; UINT32 *Buffer = ACPI_CAST_PTR (UINT32, InBuffer); UINT32 Dword; /* Parameter validation */ if (!InBuffer || !ReturnBuffer || (Length < ACPI_PLD_REV1_BUFFER_SIZE)) { return (AE_BAD_PARAMETER); } PldInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PLD_INFO)); if (!PldInfo) { return (AE_NO_MEMORY); } /* First 32-bit DWord */ ACPI_MOVE_32_TO_32 (&Dword, &Buffer[0]); PldInfo->Revision = ACPI_PLD_GET_REVISION (&Dword); PldInfo->IgnoreColor = ACPI_PLD_GET_IGNORE_COLOR (&Dword); PldInfo->Red = ACPI_PLD_GET_RED (&Dword); PldInfo->Green = ACPI_PLD_GET_GREEN (&Dword); PldInfo->Blue = ACPI_PLD_GET_BLUE (&Dword); /* Second 32-bit DWord */ ACPI_MOVE_32_TO_32 (&Dword, &Buffer[1]); PldInfo->Width = ACPI_PLD_GET_WIDTH (&Dword); PldInfo->Height = ACPI_PLD_GET_HEIGHT(&Dword); /* Third 32-bit DWord */ ACPI_MOVE_32_TO_32 (&Dword, &Buffer[2]); PldInfo->UserVisible = ACPI_PLD_GET_USER_VISIBLE (&Dword); PldInfo->Dock = ACPI_PLD_GET_DOCK (&Dword); PldInfo->Lid = ACPI_PLD_GET_LID (&Dword); PldInfo->Panel = ACPI_PLD_GET_PANEL (&Dword); PldInfo->VerticalPosition = ACPI_PLD_GET_VERTICAL (&Dword); PldInfo->HorizontalPosition = ACPI_PLD_GET_HORIZONTAL (&Dword); PldInfo->Shape = ACPI_PLD_GET_SHAPE (&Dword); PldInfo->GroupOrientation = ACPI_PLD_GET_ORIENTATION (&Dword); PldInfo->GroupToken = ACPI_PLD_GET_TOKEN (&Dword); PldInfo->GroupPosition = ACPI_PLD_GET_POSITION (&Dword); PldInfo->Bay = ACPI_PLD_GET_BAY (&Dword); /* Fourth 32-bit DWord */ ACPI_MOVE_32_TO_32 (&Dword, &Buffer[3]); PldInfo->Ejectable = ACPI_PLD_GET_EJECTABLE (&Dword); PldInfo->OspmEjectRequired = ACPI_PLD_GET_OSPM_EJECT (&Dword); PldInfo->CabinetNumber = ACPI_PLD_GET_CABINET (&Dword); PldInfo->CardCageNumber = ACPI_PLD_GET_CARD_CAGE (&Dword); PldInfo->Reference = ACPI_PLD_GET_REFERENCE (&Dword); PldInfo->Rotation = ACPI_PLD_GET_ROTATION (&Dword); PldInfo->Order = ACPI_PLD_GET_ORDER (&Dword); if (Length >= ACPI_PLD_REV2_BUFFER_SIZE) { /* Fifth 32-bit DWord (Revision 2 of _PLD) */ ACPI_MOVE_32_TO_32 (&Dword, &Buffer[4]); PldInfo->VerticalOffset = ACPI_PLD_GET_VERT_OFFSET (&Dword); PldInfo->HorizontalOffset = ACPI_PLD_GET_HORIZ_OFFSET (&Dword); } *ReturnBuffer = PldInfo; return (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiDecodePldBuffer)