/****************************************************************************** * * Module Name: utxface - External interfaces for "global" ACPI functions * $Revision: 1.128 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2008, 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 __UTXFACE_C__ #include "acpi.h" #include "acevents.h" #include "acnamesp.h" #include "acdebug.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("utxface") #ifndef ACPI_ASL_COMPILER /******************************************************************************* * * FUNCTION: AcpiInitializeSubsystem * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Initializes all global variables. This is the first function * called, so any early initialization belongs here. * ******************************************************************************/ ACPI_STATUS AcpiInitializeSubsystem ( void) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem); AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE; ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ()); /* Initialize the OS-Dependent layer */ Status = AcpiOsInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization")); return_ACPI_STATUS (Status); } /* Initialize all globals used by the subsystem */ Status = AcpiUtInitGlobals (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals")); return_ACPI_STATUS (Status); } /* Create the default mutex objects */ Status = AcpiUtMutexInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation")); return_ACPI_STATUS (Status); } /* * Initialize the namespace manager and * the root of the namespace tree */ Status = AcpiNsRootInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization")); return_ACPI_STATUS (Status); } /* If configured, initialize the AML debugger */ ACPI_DEBUGGER_EXEC (Status = AcpiDbInitialize ()); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiInitializeSubsystem) /******************************************************************************* * * FUNCTION: AcpiEnableSubsystem * * PARAMETERS: Flags - Init/enable Options * * RETURN: Status * * DESCRIPTION: Completes the subsystem initialization including hardware. * Puts system into ACPI mode if it isn't already. * ******************************************************************************/ ACPI_STATUS AcpiEnableSubsystem ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); /* Enable ACPI mode */ if (!(Flags & ACPI_NO_ACPI_ENABLE)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); AcpiGbl_OriginalMode = AcpiHwGetMode(); Status = AcpiEnable (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); return_ACPI_STATUS (Status); } } /* * Install the default OpRegion handlers. These are installed unless * other handlers have already been installed via the * InstallAddressSpaceHandler interface. */ if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing default address space handlers\n")); Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Initialize ACPI Event handling (Fixed and General Purpose) * * Note1: We must have the hardware and events initialized before we can * execute any control methods safely. Any control method can require * ACPI hardware support, so the hardware must be fully initialized before * any method execution! * * Note2: Fixed events are initialized and enabled here. GPEs are * initialized, but cannot be enabled until after the hardware is * completely initialized (SCI and GlobalLock activated) and the various * initialization control methods are run (_REG, _STA, _INI) on the * entire namespace. */ if (!(Flags & ACPI_NO_EVENT_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n")); Status = AcpiEvInitializeEvents (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Install the SCI handler and Global Lock handler. This completes the * hardware initialization. */ if (!(Flags & ACPI_NO_HANDLER_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL handlers\n")); Status = AcpiEvInstallXruptHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiEnableSubsystem) /******************************************************************************* * * FUNCTION: AcpiInitializeObjects * * PARAMETERS: Flags - Init/enable Options * * RETURN: Status * * DESCRIPTION: Completes namespace initialization by initializing device * objects and executing AML code for Regions, buffers, etc. * ******************************************************************************/ ACPI_STATUS AcpiInitializeObjects ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiInitializeObjects); /* * Run all _REG methods * * Note: Any objects accessed by the _REG methods will be automatically * initialized, even if they contain executable AML (see the call to * AcpiNsInitializeObjects below). */ if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Executing _REG OpRegion methods\n")); Status = AcpiEvInitializeOpRegions (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Initialize the objects that remain uninitialized. This runs the * executable AML that may be part of the declaration of these objects: * OperationRegions, BufferFields, Buffers, and Packages. */ if (!(Flags & ACPI_NO_OBJECT_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Completing Initialization of ACPI Objects\n")); Status = AcpiNsInitializeObjects (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Initialize all device objects in the namespace. This runs the device * _STA and _INI methods. */ if (!(Flags & ACPI_NO_DEVICE_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI Devices\n")); Status = AcpiNsInitializeDevices (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Initialize the GPE blocks defined in the FADT (GPE block 0 and 1). * The runtime GPEs are enabled here. * * This is where the _PRW methods are executed for the GPEs. These * methods can only be executed after the SCI and Global Lock handlers are * installed and initialized. * * GPEs can only be enabled after the _REG, _STA, and _INI methods have * been run. This ensures that all Operation Regions and all Devices have * been initialized and are ready. */ if (!(Flags & ACPI_NO_EVENT_INIT)) { Status = AcpiEvInstallFadtGpes (); if (ACPI_FAILURE (Status)) { return (Status); } } /* * Empty the caches (delete the cached objects) on the assumption that * the table load filled them up more than they will be at runtime -- * thus wasting non-paged memory. */ Status = AcpiPurgeCachedObjects (); AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiInitializeObjects) #endif /******************************************************************************* * * FUNCTION: AcpiTerminate * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources. * ******************************************************************************/ ACPI_STATUS AcpiTerminate ( void) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiTerminate); /* Terminate the AML Debugger if present */ ACPI_DEBUGGER_EXEC(AcpiGbl_DbTerminateThreads = TRUE); /* Shutdown and free all resources */ AcpiUtSubsystemShutdown (); /* Free the mutex objects */ AcpiUtMutexTerminate (); #ifdef ACPI_DEBUGGER /* Shut down the debugger */ AcpiDbTerminate (); #endif /* Now we can shutdown the OS-dependent layer */ Status = AcpiOsTerminate (); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (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; ACPI_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) #endif