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Diffstat (limited to 'sys/contrib/dev/acpica/exmutex.c')
| -rw-r--r-- | sys/contrib/dev/acpica/exmutex.c | 445 |
1 files changed, 0 insertions, 445 deletions
diff --git a/sys/contrib/dev/acpica/exmutex.c b/sys/contrib/dev/acpica/exmutex.c deleted file mode 100644 index 6b87cc5e0e28..000000000000 --- a/sys/contrib/dev/acpica/exmutex.c +++ /dev/null @@ -1,445 +0,0 @@ - -/****************************************************************************** - * - * Module Name: exmutex - ASL Mutex Acquire/Release functions - * $Revision: 18 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2003, 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 __EXMUTEX_C__ - -#include "acpi.h" -#include "acinterp.h" - -#define _COMPONENT ACPI_EXECUTER - ACPI_MODULE_NAME ("exmutex") - - -/******************************************************************************* - * - * FUNCTION: AcpiExUnlinkMutex - * - * PARAMETERS: *ObjDesc - The mutex to be unlinked - * - * RETURN: Status - * - * DESCRIPTION: Remove a mutex from the "AcquiredMutex" list - * - ******************************************************************************/ - -void -AcpiExUnlinkMutex ( - ACPI_OPERAND_OBJECT *ObjDesc) -{ - ACPI_THREAD_STATE *Thread = ObjDesc->Mutex.OwnerThread; - - - if (!Thread) - { - return; - } - - if (ObjDesc->Mutex.Next) - { - (ObjDesc->Mutex.Next)->Mutex.Prev = ObjDesc->Mutex.Prev; - } - - if (ObjDesc->Mutex.Prev) - { - (ObjDesc->Mutex.Prev)->Mutex.Next = ObjDesc->Mutex.Next; - } - else - { - Thread->AcquiredMutexList = ObjDesc->Mutex.Next; - } -} - - -/******************************************************************************* - * - * FUNCTION: AcpiExLinkMutex - * - * PARAMETERS: *ObjDesc - The mutex to be linked - * *ListHead - head of the "AcquiredMutex" list - * - * RETURN: Status - * - * DESCRIPTION: Add a mutex to the "AcquiredMutex" list for this walk - * - ******************************************************************************/ - -void -AcpiExLinkMutex ( - ACPI_OPERAND_OBJECT *ObjDesc, - ACPI_THREAD_STATE *Thread) -{ - ACPI_OPERAND_OBJECT *ListHead; - - - ListHead = Thread->AcquiredMutexList; - - /* This object will be the first object in the list */ - - ObjDesc->Mutex.Prev = NULL; - ObjDesc->Mutex.Next = ListHead; - - /* Update old first object to point back to this object */ - - if (ListHead) - { - ListHead->Mutex.Prev = ObjDesc; - } - - /* Update list head */ - - Thread->AcquiredMutexList = ObjDesc; -} - - -/******************************************************************************* - * - * FUNCTION: AcpiExAcquireMutex - * - * PARAMETERS: *TimeDesc - The 'time to delay' object descriptor - * *ObjDesc - The object descriptor for this op - * - * RETURN: Status - * - * DESCRIPTION: Acquire an AML mutex - * - ******************************************************************************/ - -ACPI_STATUS -AcpiExAcquireMutex ( - ACPI_OPERAND_OBJECT *TimeDesc, - ACPI_OPERAND_OBJECT *ObjDesc, - ACPI_WALK_STATE *WalkState) -{ - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE_PTR ("ExAcquireMutex", ObjDesc); - - - if (!ObjDesc) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* Sanity check -- we must have a valid thread ID */ - - if (!WalkState->Thread) - { - ACPI_REPORT_ERROR (("Cannot acquire Mutex [%4.4s], null thread info\n", - ObjDesc->Mutex.Node->Name.Ascii)); - return_ACPI_STATUS (AE_AML_INTERNAL); - } - - /* - * Current Sync must be less than or equal to the sync level of the - * mutex. This mechanism provides some deadlock prevention - */ - if (WalkState->Thread->CurrentSyncLevel > ObjDesc->Mutex.SyncLevel) - { - ACPI_REPORT_ERROR (("Cannot acquire Mutex [%4.4s], incorrect SyncLevel\n", - ObjDesc->Mutex.Node->Name.Ascii)); - return_ACPI_STATUS (AE_AML_MUTEX_ORDER); - } - - /* - * Support for multiple acquires by the owning thread - */ - - if ((ObjDesc->Mutex.OwnerThread) && - (ObjDesc->Mutex.OwnerThread->ThreadId == WalkState->Thread->ThreadId)) - { - /* - * The mutex is already owned by this thread, - * just increment the acquisition depth - */ - ObjDesc->Mutex.AcquisitionDepth++; - return_ACPI_STATUS (AE_OK); - } - - /* Acquire the mutex, wait if necessary */ - - Status = AcpiExSystemAcquireMutex (TimeDesc, ObjDesc); - if (ACPI_FAILURE (Status)) - { - /* Includes failure from a timeout on TimeDesc */ - - return_ACPI_STATUS (Status); - } - - /* Have the mutex, update mutex and walk info */ - - ObjDesc->Mutex.OwnerThread = WalkState->Thread; - ObjDesc->Mutex.AcquisitionDepth = 1; - - WalkState->Thread->CurrentSyncLevel = ObjDesc->Mutex.SyncLevel; - - /* Link the mutex to the current thread for force-unlock at method exit */ - - AcpiExLinkMutex (ObjDesc, WalkState->Thread); - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiExReleaseMutex - * - * PARAMETERS: *ObjDesc - The object descriptor for this op - * - * RETURN: Status - * - * DESCRIPTION: Release a previously acquired Mutex. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiExReleaseMutex ( - ACPI_OPERAND_OBJECT *ObjDesc, - ACPI_WALK_STATE *WalkState) -{ - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE ("ExReleaseMutex"); - - - if (!ObjDesc) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* The mutex must have been previously acquired in order to release it */ - - if (!ObjDesc->Mutex.OwnerThread) - { - ACPI_REPORT_ERROR (("Cannot release Mutex [%4.4s], not acquired\n", - ObjDesc->Mutex.Node->Name.Ascii)); - return_ACPI_STATUS (AE_AML_MUTEX_NOT_ACQUIRED); - } - - /* Sanity check -- we must have a valid thread ID */ - - if (!WalkState->Thread) - { - ACPI_REPORT_ERROR (("Cannot release Mutex [%4.4s], null thread info\n", - ObjDesc->Mutex.Node->Name.Ascii)); - return_ACPI_STATUS (AE_AML_INTERNAL); - } - - /* The Mutex is owned, but this thread must be the owner */ - - if (ObjDesc->Mutex.OwnerThread->ThreadId != WalkState->Thread->ThreadId) - { - ACPI_REPORT_ERROR (( - "Thread %X cannot release Mutex [%4.4s] acquired by thread %X\n", - WalkState->Thread->ThreadId, - ObjDesc->Mutex.Node->Name.Ascii, - ObjDesc->Mutex.OwnerThread->ThreadId)); - return_ACPI_STATUS (AE_AML_NOT_OWNER); - } - - /* - * The sync level of the mutex must be less than or - * equal to the current sync level - */ - if (ObjDesc->Mutex.SyncLevel > WalkState->Thread->CurrentSyncLevel) - { - ACPI_REPORT_ERROR (("Cannot release Mutex [%4.4s], incorrect SyncLevel\n", - ObjDesc->Mutex.Node->Name.Ascii)); - return_ACPI_STATUS (AE_AML_MUTEX_ORDER); - } - - /* - * Match multiple Acquires with multiple Releases - */ - ObjDesc->Mutex.AcquisitionDepth--; - if (ObjDesc->Mutex.AcquisitionDepth != 0) - { - /* Just decrement the depth and return */ - - return_ACPI_STATUS (AE_OK); - } - - /* Unlink the mutex from the owner's list */ - - AcpiExUnlinkMutex (ObjDesc); - - /* Release the mutex */ - - Status = AcpiExSystemReleaseMutex (ObjDesc); - - /* Update the mutex and walk state */ - - ObjDesc->Mutex.OwnerThread = NULL; - WalkState->Thread->CurrentSyncLevel = ObjDesc->Mutex.SyncLevel; - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiExReleaseAllMutexes - * - * PARAMETERS: *MutexList - Head of the mutex list - * - * RETURN: Status - * - * DESCRIPTION: Release all mutexes in the list - * - ******************************************************************************/ - -void -AcpiExReleaseAllMutexes ( - ACPI_THREAD_STATE *Thread) -{ - ACPI_OPERAND_OBJECT *Next = Thread->AcquiredMutexList; - ACPI_OPERAND_OBJECT *This; - ACPI_STATUS Status; - - - ACPI_FUNCTION_ENTRY (); - - - /* - * Traverse the list of owned mutexes, releasing each one. - */ - while (Next) - { - This = Next; - Next = This->Mutex.Next; - - This->Mutex.AcquisitionDepth = 1; - This->Mutex.Prev = NULL; - This->Mutex.Next = NULL; - - /* Release the mutex */ - - Status = AcpiExSystemReleaseMutex (This); - if (ACPI_FAILURE (Status)) - { - continue; - } - - /* Mark mutex unowned */ - - This->Mutex.OwnerThread = NULL; - } -} - - |