/****************************************************************************** * * Module Name: evmisc - Miscellaneous event manager support 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. * *****************************************************************************/ #include "acpi.h" #include "accommon.h" #include "acevents.h" #include "acnamesp.h" #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME ("evmisc") /* Local prototypes */ static void ACPI_SYSTEM_XFACE AcpiEvNotifyDispatch ( void *Context); /******************************************************************************* * * FUNCTION: AcpiEvIsNotifyObject * * PARAMETERS: Node - Node to check * * RETURN: TRUE if notifies allowed on this object * * DESCRIPTION: Check type of node for a object that supports notifies. * * TBD: This could be replaced by a flag bit in the node. * ******************************************************************************/ BOOLEAN AcpiEvIsNotifyObject ( ACPI_NAMESPACE_NODE *Node) { switch (Node->Type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: /* * These are the ONLY objects that can receive ACPI notifications */ return (TRUE); default: return (FALSE); } } /******************************************************************************* * * FUNCTION: AcpiEvQueueNotifyRequest * * PARAMETERS: Node - NS node for the notified object * NotifyValue - Value from the Notify() request * * RETURN: Status * * DESCRIPTION: Dispatch a device notification event to a previously * installed handler. * ******************************************************************************/ ACPI_STATUS AcpiEvQueueNotifyRequest ( ACPI_NAMESPACE_NODE *Node, UINT32 NotifyValue) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerListHead = NULL; ACPI_GENERIC_STATE *Info; UINT8 HandlerListId = 0; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_NAME (EvQueueNotifyRequest); /* Are Notifies allowed on this object? */ if (!AcpiEvIsNotifyObject (Node)) { return (AE_TYPE); } /* Get the correct notify list type (System or Device) */ if (NotifyValue <= ACPI_MAX_SYS_NOTIFY) { HandlerListId = ACPI_SYSTEM_HANDLER_LIST; } else { HandlerListId = ACPI_DEVICE_HANDLER_LIST; } /* Get the notify object attached to the namespace Node */ ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* We have an attached object, Get the correct handler list */ HandlerListHead = ObjDesc->CommonNotify.NotifyList[HandlerListId]; } /* * If there is no notify handler (Global or Local) * for this object, just ignore the notify */ if (!AcpiGbl_GlobalNotify[HandlerListId].Handler && !HandlerListHead) { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "No notify handler for Notify, ignoring (%4.4s, %X) node %p\n", AcpiUtGetNodeName (Node), NotifyValue, Node)); return (AE_OK); } /* Setup notify info and schedule the notify dispatcher */ Info = AcpiUtCreateGenericState (); if (!Info) { return (AE_NO_MEMORY); } Info->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY; Info->Notify.Node = Node; Info->Notify.Value = (UINT16) NotifyValue; Info->Notify.HandlerListId = HandlerListId; Info->Notify.HandlerListHead = HandlerListHead; Info->Notify.Global = &AcpiGbl_GlobalNotify[HandlerListId]; ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n", AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type), NotifyValue, AcpiUtGetNotifyName (NotifyValue, ACPI_TYPE_ANY), Node)); Status = AcpiOsExecute (OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, Info); if (ACPI_FAILURE (Status)) { AcpiUtDeleteGenericState (Info); } return (Status); } /******************************************************************************* * * FUNCTION: AcpiEvNotifyDispatch * * PARAMETERS: Context - To be passed to the notify handler * * RETURN: None. * * DESCRIPTION: Dispatch a device notification event to a previously * installed handler. * ******************************************************************************/ static void ACPI_SYSTEM_XFACE AcpiEvNotifyDispatch ( void *Context) { ACPI_GENERIC_STATE *Info = (ACPI_GENERIC_STATE *) Context; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_FUNCTION_ENTRY (); /* Invoke a global notify handler if installed */ if (Info->Notify.Global->Handler) { Info->Notify.Global->Handler (Info->Notify.Node, Info->Notify.Value, Info->Notify.Global->Context); } /* Now invoke the local notify handler(s) if any are installed */ HandlerObj = Info->Notify.HandlerListHead; while (HandlerObj) { HandlerObj->Notify.Handler (Info->Notify.Node, Info->Notify.Value, HandlerObj->Notify.Context); HandlerObj = HandlerObj->Notify.Next[Info->Notify.HandlerListId]; } /* All done with the info object */ AcpiUtDeleteGenericState (Info); } #if (!ACPI_REDUCED_HARDWARE) /****************************************************************************** * * FUNCTION: AcpiEvTerminate * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Disable events and free memory allocated for table storage. * ******************************************************************************/ void AcpiEvTerminate ( void) { UINT32 i; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (EvTerminate); if (AcpiGbl_EventsInitialized) { /* * Disable all event-related functionality. In all cases, on error, * print a message but obviously we don't abort. */ /* Disable all fixed events */ for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { Status = AcpiDisableEvent (i, 0); if (ACPI_FAILURE (Status)) { ACPI_ERROR ((AE_INFO, "Could not disable fixed event %u", (UINT32) i)); } } /* Disable all GPEs in all GPE blocks */ Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL); Status = AcpiEvRemoveGlobalLockHandler (); if (ACPI_FAILURE(Status)) { ACPI_ERROR ((AE_INFO, "Could not remove Global Lock handler")); } AcpiGbl_EventsInitialized = FALSE; } /* Remove SCI handlers */ Status = AcpiEvRemoveAllSciHandlers (); if (ACPI_FAILURE(Status)) { ACPI_ERROR ((AE_INFO, "Could not remove SCI handler")); } /* Deallocate all handler objects installed within GPE info structs */ Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL); /* Return to original mode if necessary */ if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY) { Status = AcpiDisable (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "AcpiDisable failed")); } } return_VOID; } #endif /* !ACPI_REDUCED_HARDWARE */