mirror of
https://github.com/reactos/reactos.git
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134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/*
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* PROJECT: ReactOS Drivers
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* LICENSE: BSD - See COPYING.ARM in the top level directory
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* FILE: drivers/sac/driver/dispatch.c
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* PURPOSE: Driver for the Server Administration Console (SAC) for EMS
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* PROGRAMMERS: ReactOS Portable Systems Group
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*/
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/* INCLUDES *******************************************************************/
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#include "sacdrv.h"
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/* GLOBALS ********************************************************************/
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LONG TimerDpcCount;
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/* FUNCTIONS ******************************************************************/
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NTSTATUS
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NTAPI
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DispatchDeviceControl(IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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DispatchShutdownControl(IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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DispatchCreate(IN PSAC_DEVICE_EXTENSION DeviceExtension,
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IN PIRP Irp)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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DispatchClose(IN PSAC_DEVICE_EXTENSION DeviceExtension,
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IN PIRP Irp)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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Dispatch(IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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VOID
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NTAPI
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TimerDpcRoutine(IN PKDPC Dpc,
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IN PVOID DeferredContext,
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IN PVOID SystemArgument1,
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IN PVOID SystemArgument2)
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{
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HEADLESS_RSP_GET_BYTE ByteValue;
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SIZE_T ValueSize;
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BOOLEAN GotChar;
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NTSTATUS Status;
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PSAC_DEVICE_EXTENSION SacExtension;
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/* Update our counter */
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_InterlockedExchangeAdd(&TimerDpcCount, 1);
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/* Set defaults and loop for new characters */
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GotChar = FALSE;
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ValueSize = sizeof(ByteValue);
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do
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{
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/* Ask the kernel for a byte */
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Status = HeadlessDispatch(HeadlessCmdGetByte,
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NULL,
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0,
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&ByteValue,
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&ValueSize);
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/* Break out if there's nothing interesting */
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if (!NT_SUCCESS(Status)) break;
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if (!ByteValue.Value) break;
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/* Update the serial port buffer */
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SerialPortBuffer[SerialPortProducerIndex] = ByteValue.Value;
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GotChar = TRUE;
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/* Update the index, let it roll-over if needed */
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_InterlockedExchange(&SerialPortProducerIndex,
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(SerialPortProducerIndex + 1) &
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(SAC_SERIAL_PORT_BUFFER_SIZE - 1));
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} while (ByteValue.Value);
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/* Did we get anything */
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if (GotChar)
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{
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/* Signal the worker thread that there is work to do */
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SacExtension = DeferredContext;
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KeSetEvent(&SacExtension->Event, SacExtension->PriorityBoost, FALSE);
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}
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}
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VOID
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NTAPI
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UnloadHandler(IN PDRIVER_OBJECT DriverObject)
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{
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PDEVICE_OBJECT DeviceObject, NextDevice;
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SAC_DBG(SAC_DBG_ENTRY_EXIT, "SAC UnloadHandler: Entering.\n");
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/* Go over every device part of the driver */
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DeviceObject = DriverObject->DeviceObject;
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while (DeviceObject)
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{
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/* Free and delete the information about this device */
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NextDevice = DeviceObject->NextDevice;
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FreeDeviceData(DeviceObject);
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IoDeleteDevice(DeviceObject);
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/* Move on to the next one */
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DeviceObject = NextDevice;
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}
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/* Free the driver data and exit */
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FreeGlobalData();
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SAC_DBG(SAC_DBG_ENTRY_EXIT, "SAC UnloadHandler: Exiting.\n");
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}
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