示例#1
0
void
AcpiTerminateDebugger (
    void)
{

    /* Terminate the AML Debugger */

    AcpiGbl_DbTerminateLoop = TRUE;

    if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
    {
        AcpiOsReleaseMutex (AcpiGbl_DbCommandReady);

        /* Wait the AML Debugger threads */

        while (!AcpiGbl_DbThreadsTerminated)
        {
            AcpiOsSleep (100);
        }
    }

    if (AcpiGbl_DbBuffer)
    {
        AcpiOsFree (AcpiGbl_DbBuffer);
        AcpiGbl_DbBuffer = NULL;
    }

    /* Ensure that debug output is now disabled */

    AcpiGbl_DbOutputFlags = ACPI_DB_DISABLE_OUTPUT;
}
示例#2
0
void ACPI_SYSTEM_XFACE
AcpiDbExecuteThread (
    void                    *Context)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_STATUS             MStatus;


    while (Status != AE_CTRL_TERMINATE)
    {
        AcpiGbl_MethodExecuting = FALSE;
        AcpiGbl_StepToNextCall = FALSE;

        MStatus = AcpiOsAcquireMutex (AcpiGbl_DbCommandReady,
            ACPI_WAIT_FOREVER);
        if (ACPI_FAILURE (MStatus))
        {
            return;
        }

        Status = AcpiDbCommandDispatch (AcpiGbl_DbLineBuf, NULL, NULL);

        AcpiOsReleaseMutex (AcpiGbl_DbCommandComplete);
    }
}
示例#3
0
ACPI_STATUS
AcpiUtInitializeInterfaces (
    void)
{
    ACPI_STATUS             Status;
    UINT32                  i;


    Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    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);
}
示例#4
0
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);
}
示例#5
0
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);
}
示例#6
0
文件: utosi.c 项目: rchander/freebsd
ACPI_STATUS
AcpiUtInterfaceTerminate (
    void)
{
    ACPI_STATUS             Status;
    ACPI_INTERFACE_INFO     *NextInterface;


    Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    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);
    return (AE_OK);
}
示例#7
0
void
AcpiUtReleaseWriteLock (
    ACPI_RW_LOCK            *Lock)
{

    AcpiOsReleaseMutex (Lock->WriterMutex);
}
示例#8
0
文件: utosi.c 项目: ornarium/freebsd
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);
}
示例#9
0
ACPI_STATUS
AcpiOsNotifyCommandComplete (
    void)
{

    if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED)
    {
        AcpiOsReleaseMutex (AcpiGbl_DbCommandComplete);
    }
    return (AE_OK);
}
示例#10
0
文件: exmutex.c 项目: matter123/mossy
void
AcpiExReleaseAllMutexes (
    ACPI_THREAD_STATE       *Thread)
{
    ACPI_OPERAND_OBJECT     *Next = Thread->AcquiredMutexList;
    ACPI_OPERAND_OBJECT     *ObjDesc;


    ACPI_FUNCTION_TRACE (ExReleaseAllMutexes);


    /* Traverse the list of owned mutexes, releasing each one */

    while (Next)
    {
        ObjDesc = Next;
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "Mutex [%4.4s] force-release, SyncLevel %u Depth %u\n",
            ObjDesc->Mutex.Node->Name.Ascii, ObjDesc->Mutex.SyncLevel,
            ObjDesc->Mutex.AcquisitionDepth));

        /* Release the mutex, special case for Global Lock */

        if (ObjDesc == AcpiGbl_GlobalLockMutex)
        {
            /* Ignore errors */

            (void) AcpiEvReleaseGlobalLock ();
        }
        else
        {
            AcpiOsReleaseMutex (ObjDesc->Mutex.OsMutex);
        }

        /* Update Thread SyncLevel (Last mutex is the important one) */

        Thread->CurrentSyncLevel = ObjDesc->Mutex.OriginalSyncLevel;

        /* Mark mutex unowned */

        Next = ObjDesc->Mutex.Next;

        ObjDesc->Mutex.Prev = NULL;
        ObjDesc->Mutex.Next = NULL;
        ObjDesc->Mutex.AcquisitionDepth = 0;
        ObjDesc->Mutex.OwnerThread = NULL;
        ObjDesc->Mutex.ThreadId = 0;
    }

    return_VOID;
}
示例#11
0
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);
}
示例#12
0
ACPI_STATUS
AcpiExReleaseMutexObject (
    ACPI_OPERAND_OBJECT     *ObjDesc)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (ExReleaseMutexObject);


    if (ObjDesc->Mutex.AcquisitionDepth == 0)
    {
        return_ACPI_STATUS (AE_NOT_ACQUIRED);
    }

    /* 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);
    }

    if (ObjDesc->Mutex.OwnerThread)
    {
        /* Unlink the mutex from the owner's list */

        AcpiExUnlinkMutex (ObjDesc);
        ObjDesc->Mutex.OwnerThread = NULL;
    }

    /* Release the mutex, special case for Global Lock */

    if (ObjDesc == AcpiGbl_GlobalLockMutex)
    {
        Status = AcpiEvReleaseGlobalLock ();
    }
    else
    {
        AcpiOsReleaseMutex (ObjDesc->Mutex.OsMutex);
    }

    /* Clear mutex info */

    ObjDesc->Mutex.ThreadId = 0;
    return_ACPI_STATUS (Status);
}
示例#13
0
ACPI_STATUS
AcpiUtReleaseReadLock (
    ACPI_RW_LOCK            *Lock)
{
    ACPI_STATUS             Status;


    Status = AcpiOsAcquireMutex (Lock->ReaderMutex, ACPI_WAIT_FOREVER);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* Release the write lock only for the very last reader */

    Lock->NumReaders--;
    if (Lock->NumReaders == 0)
    {
        AcpiOsReleaseMutex (Lock->WriterMutex);
    }

    AcpiOsReleaseMutex (Lock->ReaderMutex);
    return (Status);
}
示例#14
0
ACPI_STATUS
AcpiEvReleaseGlobalLock (
    void)
{
    BOOLEAN                 Pending = FALSE;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (EvReleaseGlobalLock);


    /* Lock must be already acquired */

    if (!AcpiGbl_GlobalLockAcquired)
    {
        ACPI_WARNING ((AE_INFO,
            "Cannot release the ACPI Global Lock, it has not been acquired"));
        return_ACPI_STATUS (AE_NOT_ACQUIRED);
    }

    if (AcpiGbl_GlobalLockPresent)
    {
        /* Allow any thread to release the lock */

        ACPI_RELEASE_GLOBAL_LOCK (AcpiGbl_FACS, Pending);

        /*
         * If the pending bit was set, we must write GBL_RLS to the control
         * register
         */
        if (Pending)
        {
            Status = AcpiWriteBitRegister (
                        ACPI_BITREG_GLOBAL_LOCK_RELEASE, ACPI_ENABLE_EVENT);
        }

        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Released hardware Global Lock\n"));
    }

    AcpiGbl_GlobalLockAcquired = FALSE;

    /* Release the local GL mutex */

    AcpiOsReleaseMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex);
    return_ACPI_STATUS (Status);
}
示例#15
0
ACPI_STATUS
AcpiUtInterfaceTerminate (
    void)
{
    ACPI_STATUS             Status;
    ACPI_INTERFACE_INFO     *NextInterface;


    Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    NextInterface = AcpiGbl_SupportedInterfaces;
    while (NextInterface)
    {
        AcpiGbl_SupportedInterfaces = NextInterface->Next;

        if (NextInterface->Flags & ACPI_OSI_DYNAMIC)
        {
            /* Only interfaces added at runtime can be freed */

            ACPI_FREE (NextInterface->Name);
            ACPI_FREE (NextInterface);
        }
        else
        {
            /* Interface is in static list. Reset it to invalid or valid. */

            if (NextInterface->Flags & ACPI_OSI_DEFAULT_INVALID)
            {
                NextInterface->Flags |= ACPI_OSI_INVALID;
            }
            else
            {
                NextInterface->Flags &= ~ACPI_OSI_INVALID;
            }
        }

        NextInterface = AcpiGbl_SupportedInterfaces;
    }

    AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
    return (AE_OK);
}
示例#16
0
文件: exmutex.c 项目: CoryXie/CellOS
void
AcpiExReleaseAllMutexes (
    ACPI_THREAD_STATE       *Thread)
{
    ACPI_OPERAND_OBJECT     *Next = Thread->AcquiredMutexList;
    ACPI_OPERAND_OBJECT     *ObjDesc;


    ACPI_FUNCTION_ENTRY ();


    /* Traverse the list of owned mutexes, releasing each one */

    while (Next)
    {
        ObjDesc = Next;
        Next = ObjDesc->Mutex.Next;

        ObjDesc->Mutex.Prev = NULL;
        ObjDesc->Mutex.Next = NULL;
        ObjDesc->Mutex.AcquisitionDepth = 0;

        /* Release the mutex, special case for Global Lock */

        if (ObjDesc == AcpiGbl_GlobalLockMutex)
        {
            /* Ignore errors */

            (void) AcpiEvReleaseGlobalLock ();
        }
        else
        {
            AcpiOsReleaseMutex (ObjDesc->Mutex.OsMutex);
        }

        /* Mark mutex unowned */

        ObjDesc->Mutex.OwnerThread = NULL;
        ObjDesc->Mutex.ThreadId = 0;

        /* Update Thread SyncLevel (Last mutex is the important one) */

        Thread->CurrentSyncLevel = ObjDesc->Mutex.OriginalSyncLevel;
    }
}
示例#17
0
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);
}
示例#18
0
ACPI_STATUS
AcpiReleaseMutex (
    ACPI_HANDLE             Handle,
    ACPI_STRING             Pathname)
{
    ACPI_STATUS             Status;
    ACPI_OPERAND_OBJECT     *MutexObj;


    /* Get the low-level mutex associated with Handle:Pathname */

    Status = AcpiUtGetMutexObject (Handle, Pathname, &MutexObj);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* Release the OS mutex */

    AcpiOsReleaseMutex (MutexObj->Mutex.OsMutex);
    return (AE_OK);
}
示例#19
0
static void
AcpiDbRunRemoteDebugger (
    char                    *BatchBuffer)
{
    ACPI_STATUS             Status;
    char                    *Ptr = BatchBuffer;
    char                    *Cmd = Ptr;


    while (!AcpiGbl_DbTerminateLoop)
    {
        if (BatchBuffer)
        {
            if (*Ptr)
            {
                while (*Ptr)
                {
                    if (*Ptr == ',')
                    {
                        /* Convert commas to spaces */
                        *Ptr = ' ';
                    }
                    else if (*Ptr == ';')
                    {
                        *Ptr = '\0';
                        continue;
                    }

                    Ptr++;
                }

                strncpy (AcpiGbl_DbLineBuf, Cmd, ACPI_DB_LINE_BUFFER_SIZE);
                Ptr++;
                Cmd = Ptr;
            }
            else
            {
                return;
            }
        }
        else
        {
            /* Force output to console until a command is entered */

            AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);

            /* Different prompt if method is executing */

            if (!AcpiGbl_MethodExecuting)
            {
                AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
            }
            else
            {
                AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
            }

            /* Get the user input line */

            Status = AcpiOsGetLine (AcpiGbl_DbLineBuf,
                ACPI_DB_LINE_BUFFER_SIZE, NULL);
            if (ACPI_FAILURE (Status))
            {
                return;
            }
        }

        /*
         * Signal the debug thread that we have a command to execute,
         * and wait for the command to complete.
         */
        AcpiOsReleaseMutex (AcpiGbl_DbCommandReady);

        Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandComplete,
            ACPI_WAIT_FOREVER);
        if (ACPI_FAILURE (Status))
        {
            return;
        }
    }
}
示例#20
0
void
AcpiDbDisplayInterfaces (
    char                    *ActionArg,
    char                    *InterfaceNameArg)
{
    ACPI_INTERFACE_INFO     *NextInterface;
    char                    *SubString;
    ACPI_STATUS             Status;


    /* If no arguments, just display current interface list */

    if (!ActionArg)
    {
        (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex,
                    ACPI_WAIT_FOREVER);

        NextInterface = AcpiGbl_SupportedInterfaces;

        while (NextInterface)
        {
            if (!(NextInterface->Flags & ACPI_OSI_INVALID))
            {
                AcpiOsPrintf ("%s\n", NextInterface->Name);
            }
            NextInterface = NextInterface->Next;
        }

        AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
        return;
    }

    /* If ActionArg exists, so must InterfaceNameArg */

    if (!InterfaceNameArg)
    {
        AcpiOsPrintf ("Missing Interface Name argument\n");
        return;
    }

    /* Uppercase the action for match below */

    AcpiUtStrupr (ActionArg);

    /* Install - install an interface */

    SubString = ACPI_STRSTR ("INSTALL", ActionArg);
    if (SubString)
    {
        Status = AcpiInstallInterface (InterfaceNameArg);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("%s, while installing \"%s\"\n",
                AcpiFormatException (Status), InterfaceNameArg);
        }
        return;
    }

    /* Remove - remove an interface */

    SubString = ACPI_STRSTR ("REMOVE", ActionArg);
    if (SubString)
    {
        Status = AcpiRemoveInterface (InterfaceNameArg);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("%s, while removing \"%s\"\n",
                AcpiFormatException (Status), InterfaceNameArg);
        }
        return;
    }

    /* Invalid ActionArg */

    AcpiOsPrintf ("Invalid action argument: %s\n", ActionArg);
    return;
}
示例#21
0
ACPI_STATUS
AcpiDsBeginMethodExecution (
    ACPI_NAMESPACE_NODE     *MethodNode,
    ACPI_OPERAND_OBJECT     *ObjDesc,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE_PTR (DsBeginMethodExecution, MethodNode);


    if (!MethodNode)
    {
        return_ACPI_STATUS (AE_NULL_ENTRY);
    }

    /* Prevent wraparound of thread count */

    if (ObjDesc->Method.ThreadCount == ACPI_UINT8_MAX)
    {
        ACPI_ERROR ((AE_INFO,
            "Method reached maximum reentrancy limit (255)"));
        return_ACPI_STATUS (AE_AML_METHOD_LIMIT);
    }

    /*
     * If this method is serialized, we need to acquire the method mutex.
     */
    if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)
    {
        /*
         * Create a mutex for the method if it is defined to be Serialized
         * and a mutex has not already been created. We defer the mutex creation
         * until a method is actually executed, to minimize the object count
         */
        if (!ObjDesc->Method.Mutex)
        {
            Status = AcpiDsCreateMethodMutex (ObjDesc);
            if (ACPI_FAILURE (Status))
            {
                return_ACPI_STATUS (Status);
            }
        }

        /*
         * The CurrentSyncLevel (per-thread) must be less than or equal to
         * the sync level of the method. This mechanism provides some
         * deadlock prevention
         *
         * Top-level method invocation has no walk state at this point
         */
        if (WalkState &&
            (WalkState->Thread->CurrentSyncLevel > ObjDesc->Method.Mutex->Mutex.SyncLevel))
        {
            ACPI_ERROR ((AE_INFO,
                "Cannot acquire Mutex for method [%4.4s], current SyncLevel is too large (%u)",
                AcpiUtGetNodeName (MethodNode),
                WalkState->Thread->CurrentSyncLevel));

            return_ACPI_STATUS (AE_AML_MUTEX_ORDER);
        }

        /*
         * Obtain the method mutex if necessary. Do not acquire mutex for a
         * recursive call.
         */
        if (!WalkState ||
            !ObjDesc->Method.Mutex->Mutex.ThreadId ||
            (WalkState->Thread->ThreadId != ObjDesc->Method.Mutex->Mutex.ThreadId))
        {
            /*
             * Acquire the method mutex. This releases the interpreter if we
             * block (and reacquires it before it returns)
             */
            Status = AcpiExSystemWaitMutex (ObjDesc->Method.Mutex->Mutex.OsMutex,
                        ACPI_WAIT_FOREVER);
            if (ACPI_FAILURE (Status))
            {
                return_ACPI_STATUS (Status);
            }

            /* Update the mutex and walk info and save the original SyncLevel */

            if (WalkState)
            {
                ObjDesc->Method.Mutex->Mutex.OriginalSyncLevel =
                    WalkState->Thread->CurrentSyncLevel;

                ObjDesc->Method.Mutex->Mutex.ThreadId = WalkState->Thread->ThreadId;
                WalkState->Thread->CurrentSyncLevel = ObjDesc->Method.SyncLevel;
            }
            else
            {
                ObjDesc->Method.Mutex->Mutex.OriginalSyncLevel =
                    ObjDesc->Method.Mutex->Mutex.SyncLevel;
            }
        }

        /* Always increase acquisition depth */

        ObjDesc->Method.Mutex->Mutex.AcquisitionDepth++;
    }

    /*
     * Allocate an Owner ID for this method, only if this is the first thread
     * to begin concurrent execution. We only need one OwnerId, even if the
     * method is invoked recursively.
     */
    if (!ObjDesc->Method.OwnerId)
    {
        Status = AcpiUtAllocateOwnerId (&ObjDesc->Method.OwnerId);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }
    }

    /*
     * Increment the method parse tree thread count since it has been
     * reentered one more time (even if it is the same thread)
     */
    ObjDesc->Method.ThreadCount++;
    AcpiMethodCount++;
    return_ACPI_STATUS (Status);


Cleanup:
    /* On error, must release the method mutex (if present) */

    if (ObjDesc->Method.Mutex)
    {
        AcpiOsReleaseMutex (ObjDesc->Method.Mutex->Mutex.OsMutex);
    }
    return_ACPI_STATUS (Status);
}
示例#22
0
ACPI_STATUS
AcpiDbUserCommands (
    char                    Prompt,
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_STATUS             Status = AE_OK;


    AcpiOsPrintf ("\n");

    /* TBD: [Restructure] Need a separate command line buffer for step mode */

    while (!AcpiGbl_DbTerminateThreads)
    {
        /* Force output to console until a command is entered */

        AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);

        /* Different prompt if method is executing */

        if (!AcpiGbl_MethodExecuting)
        {
            AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
        }
        else
        {
            AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
        }

        /* Get the user input line */

        Status = AcpiOsGetLine (AcpiGbl_DbLineBuf,
            ACPI_DB_LINE_BUFFER_SIZE, NULL);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status, "While parsing command line"));
            return (Status);
        }

        /* Check for single or multithreaded debug */

        if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
        {
            /*
             * Signal the debug thread that we have a command to execute,
             * and wait for the command to complete.
             */
            AcpiOsReleaseMutex (AcpiGbl_DbCommandReady);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }

            Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandComplete,
                ACPI_WAIT_FOREVER);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }
        }
        else
        {
            /* Just call to the command line interpreter */

            AcpiDbSingleThread ();
        }
    }

    /* Shut down the debugger */

    AcpiTerminateDebugger ();

    /*
     * Only this thread (the original thread) should actually terminate the
     * subsystem, because all the semaphores are deleted during termination
     */
    Status = AcpiTerminate ();
    return (Status);
}
示例#23
0
static ACPI_STATUS
AcpiDbStartCommand (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_STATUS             Status;


    /* TBD: [Investigate] are there namespace locking issues here? */

    /* AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); */

    /* Go into the command loop and await next user command */


    AcpiGbl_MethodExecuting = TRUE;
    Status = AE_CTRL_TRUE;
    while (Status == AE_CTRL_TRUE)
    {
        if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED)
        {
            /* Handshake with the front-end that gets user command lines */

            AcpiOsReleaseMutex (AcpiGbl_DbCommandComplete);

            Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandReady,
                ACPI_WAIT_FOREVER);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }
        }
        else
        {
            /* Single threaded, we must get a command line ourselves */

            /* Force output to console until a command is entered */

            AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);

            /* Different prompt if method is executing */

            if (!AcpiGbl_MethodExecuting)
            {
                AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
            }
            else
            {
                AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
            }

            /* Get the user input line */

            Status = AcpiOsGetLine (AcpiGbl_DbLineBuf,
                ACPI_DB_LINE_BUFFER_SIZE, NULL);
            if (ACPI_FAILURE (Status))
            {
                ACPI_EXCEPTION ((AE_INFO, Status,
                    "While parsing command line"));
                return (Status);
            }
        }

        Status = AcpiDbCommandDispatch (AcpiGbl_DbLineBuf, WalkState, Op);
    }

    /* AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); */

    return (Status);
}
示例#24
0
ACPI_STATUS
AcpiUtOsiImplementation (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     *StringDesc;
    ACPI_OPERAND_OBJECT     *ReturnDesc;
    ACPI_INTERFACE_INFO     *InterfaceInfo;
    ACPI_INTERFACE_HANDLER  InterfaceHandler;
    ACPI_STATUS             Status;
    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;
    Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ReturnDesc);
        return_ACPI_STATUS (Status);
    }

    /* 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);
}
示例#25
0
ACPI_STATUS
AcpiUtReleaseMutex (
    ACPI_MUTEX_HANDLE       MutexId)
{
    ACPI_THREAD_ID          ThisThreadId;


    ACPI_FUNCTION_NAME (UtReleaseMutex);


    ThisThreadId = AcpiOsGetThreadId ();
    ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %u releasing Mutex [%s]\n",
        (UINT32) ThisThreadId, AcpiUtGetMutexName (MutexId)));

    if (MutexId > ACPI_MAX_MUTEX)
    {
        return (AE_BAD_PARAMETER);
    }

    /*
     * Mutex must be acquired in order to release it!
     */
    if (AcpiGbl_MutexInfo[MutexId].ThreadId == ACPI_MUTEX_NOT_ACQUIRED)
    {
        ACPI_ERROR ((AE_INFO,
            "Mutex [0x%X] is not acquired, cannot release", MutexId));

        return (AE_NOT_ACQUIRED);
    }

#ifdef ACPI_MUTEX_DEBUG
    {
        UINT32                  i;
        /*
         * Mutex debug code, for internal debugging only.
         *
         * Deadlock prevention.  Check if this thread owns any mutexes of value
         * greater than this one.  If so, the thread has violated the mutex
         * ordering rule.  This indicates a coding error somewhere in
         * the ACPI subsystem code.
         */
        for (i = MutexId; i < ACPI_NUM_MUTEX; i++)
        {
            if (AcpiGbl_MutexInfo[i].ThreadId == ThisThreadId)
            {
                if (i == MutexId)
                {
                    continue;
                }

                ACPI_ERROR ((AE_INFO,
                    "Invalid release order: owns [%s], releasing [%s]",
                    AcpiUtGetMutexName (i), AcpiUtGetMutexName (MutexId)));

                return (AE_RELEASE_DEADLOCK);
            }
        }
    }
#endif

    /* Mark unlocked FIRST */

    AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED;

    AcpiOsReleaseMutex (AcpiGbl_MutexInfo[MutexId].Mutex);
    return (AE_OK);
}
示例#26
0
void
AcpiDsTerminateControlMethod (
    ACPI_OPERAND_OBJECT     *MethodDesc,
    ACPI_WALK_STATE         *WalkState)
{

    ACPI_FUNCTION_TRACE_PTR (DsTerminateControlMethod, WalkState);


    /* MethodDesc is required, WalkState is optional */

    if (!MethodDesc)
    {
        return_VOID;
    }

    if (WalkState)
    {
        /* Delete all arguments and locals */

        AcpiDsMethodDataDeleteAll (WalkState);

        /*
         * If method is serialized, release the mutex and restore the
         * current sync level for this thread
         */
        if (MethodDesc->Method.Mutex)
        {
            /* Acquisition Depth handles recursive calls */

            MethodDesc->Method.Mutex->Mutex.AcquisitionDepth--;
            if (!MethodDesc->Method.Mutex->Mutex.AcquisitionDepth)
            {
                WalkState->Thread->CurrentSyncLevel =
                    MethodDesc->Method.Mutex->Mutex.OriginalSyncLevel;

                AcpiOsReleaseMutex (MethodDesc->Method.Mutex->Mutex.OsMutex);
                MethodDesc->Method.Mutex->Mutex.ThreadId = 0;
            }
        }

        /*
         * Delete any namespace objects created anywhere within the
         * namespace by the execution of this method. Unless:
         * 1) This method is a module-level executable code method, in which
         *    case we want make the objects permanent.
         * 2) There are other threads executing the method, in which case we
         *    will wait until the last thread has completed.
         */
        if (!(MethodDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL) &&
             (MethodDesc->Method.ThreadCount == 1))
        {
            /* Delete any direct children of (created by) this method */

            AcpiNsDeleteNamespaceSubtree (WalkState->MethodNode);

            /*
             * Delete any objects that were created by this method
             * elsewhere in the namespace (if any were created).
             * Use of the ACPI_METHOD_MODIFIED_NAMESPACE optimizes the
             * deletion such that we don't have to perform an entire
             * namespace walk for every control method execution.
             */
            if (MethodDesc->Method.InfoFlags & ACPI_METHOD_MODIFIED_NAMESPACE)
            {
                AcpiNsDeleteNamespaceByOwner (MethodDesc->Method.OwnerId);
                MethodDesc->Method.InfoFlags &= ~ACPI_METHOD_MODIFIED_NAMESPACE;
            }
        }
    }

    /* Decrement the thread count on the method */

    if (MethodDesc->Method.ThreadCount)
    {
        MethodDesc->Method.ThreadCount--;
    }
    else
    {
        ACPI_ERROR ((AE_INFO,
            "Invalid zero thread count in method"));
    }

    /* Are there any other threads currently executing this method? */

    if (MethodDesc->Method.ThreadCount)
    {
        /*
         * Additional threads. Do not release the OwnerId in this case,
         * we immediately reuse it for the next thread executing this method
         */
        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
            "*** Completed execution of one thread, %u threads remaining\n",
            MethodDesc->Method.ThreadCount));
    }
    else
    {
        /* This is the only executing thread for this method */

        /*
         * Support to dynamically change a method from NotSerialized to
         * Serialized if it appears that the method is incorrectly written and
         * does not support multiple thread execution. The best example of this
         * is if such a method creates namespace objects and blocks. A second
         * thread will fail with an AE_ALREADY_EXISTS exception.
         *
         * This code is here because we must wait until the last thread exits
         * before marking the method as serialized.
         */
        if (MethodDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED_PENDING)
        {
            if (WalkState)
            {
                ACPI_INFO ((AE_INFO,
                    "Marking method %4.4s as Serialized because of AE_ALREADY_EXISTS error",
                    WalkState->MethodNode->Name.Ascii));
            }

            /*
             * Method tried to create an object twice and was marked as
             * "pending serialized". The probable cause is that the method
             * cannot handle reentrancy.
             *
             * The method was created as NotSerialized, but it tried to create
             * a named object and then blocked, causing the second thread
             * entrance to begin and then fail. Workaround this problem by
             * marking the method permanently as Serialized when the last
             * thread exits here.
             */
            MethodDesc->Method.InfoFlags &= ~ACPI_METHOD_SERIALIZED_PENDING;
            MethodDesc->Method.InfoFlags |= ACPI_METHOD_SERIALIZED;
            MethodDesc->Method.SyncLevel = 0;
        }

        /* No more threads, we can free the OwnerId */

        if (!(MethodDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL))
        {
            AcpiUtReleaseOwnerId (&MethodDesc->Method.OwnerId);
        }
    }

    return_VOID;
}
示例#27
0
文件: exmutex.c 项目: andreiw/polaris
ACPI_STATUS
AcpiExReleaseMutex (
    ACPI_OPERAND_OBJECT     *ObjDesc,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_STATUS             Status = AE_OK;


    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_ERROR ((AE_INFO, "Cannot release Mutex [%4.4s], not acquired",
            AcpiUtGetNodeName (ObjDesc->Mutex.Node)));
        return_ACPI_STATUS (AE_AML_MUTEX_NOT_ACQUIRED);
    }

    /* Sanity check: we must have a valid thread ID */

    if (!WalkState->Thread)
    {
        ACPI_ERROR ((AE_INFO, "Cannot release Mutex [%4.4s], null thread info",
            AcpiUtGetNodeName (ObjDesc->Mutex.Node)));
        return_ACPI_STATUS (AE_AML_INTERNAL);
    }

    /*
     * The Mutex is owned, but this thread must be the owner.
     * Special case for Global Lock, any thread can release
     */
    if ((ObjDesc->Mutex.OwnerThread->ThreadId != WalkState->Thread->ThreadId) &&
        (ObjDesc->Mutex.OsMutex != AcpiGbl_GlobalLockMutex))
    {
        ACPI_ERROR ((AE_INFO,
            "Thread %X cannot release Mutex [%4.4s] acquired by thread %X",
            WalkState->Thread->ThreadId,
            AcpiUtGetNodeName (ObjDesc->Mutex.Node),
            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_ERROR ((AE_INFO,
            "Cannot release Mutex [%4.4s], incorrect SyncLevel",
            AcpiUtGetNodeName (ObjDesc->Mutex.Node)));
        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, special case for Global Lock */

    if (ObjDesc->Mutex.OsMutex == AcpiGbl_GlobalLockMutex)
    {
        Status = AcpiEvReleaseGlobalLock ();
    }
    else
    {
        AcpiOsReleaseMutex (ObjDesc->Mutex.OsMutex);
    }

    /* Update the mutex and restore SyncLevel */

    ObjDesc->Mutex.OwnerThread = NULL;
    WalkState->Thread->CurrentSyncLevel = ObjDesc->Mutex.OriginalSyncLevel;

    return_ACPI_STATUS (Status);
}