drivers/serial/serenum/serenum.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Serial enumerator driver
   4  * FILE:            drivers/bus/serenum/serenum.c
   5  * PURPOSE:         Serial enumerator driver entry point
   6  *
   7  * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
   8  */
   9
  10 #define INITGUID
  11 #include "serenum.h"
  12
  13 static DRIVER_DISPATCH SerenumPnp;
  14 static DRIVER_DISPATCH IrpStub;
  15 static DRIVER_UNLOAD DriverUnload;
  16 DRIVER_INITIALIZE DriverEntry;
  17
  18 static NTSTATUS NTAPI
  19 SerenumPnp(
  20         IN PDEVICE_OBJECT DeviceObject,
  21         IN PIRP Irp)
  22 {
  23         if (((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
  24                 return SerenumFdoPnp(DeviceObject, Irp);
  25         else
  26                 return SerenumPdoPnp(DeviceObject, Irp);
  27 }
  28
  29 static VOID NTAPI
  30 DriverUnload(IN PDRIVER_OBJECT DriverObject)
  31 {
  32         // nothing to do here yet
  33 }
  34
  35 static NTSTATUS NTAPI
  36 IrpStub(
  37         IN PDEVICE_OBJECT DeviceObject,
  38         IN PIRP Irp)
  39 {
  40         if (((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
  41         {
  42                 /* Forward IRPs to lower device */
  43                 return ForwardIrpToLowerDeviceAndForget(DeviceObject, Irp);
  44         }
  45         else
  46         {
  47                 /* Forward IRPs to attached FDO */
  48                 return ForwardIrpToAttachedFdoAndForget(DeviceObject, Irp);
  49         }
  50 }
  51
  52 /*
  53  * Standard DriverEntry method.
  54  */
  55 NTSTATUS NTAPI
  56 DriverEntry(
  57         IN PDRIVER_OBJECT DriverObject,
  58         IN PUNICODE_STRING RegPath)
  59 {
  60         ULONG i;
  61
  62         DriverObject->DriverUnload = DriverUnload;
  63         DriverObject->DriverExtension->AddDevice = SerenumAddDevice;
  64
  65         for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
  66                 DriverObject->MajorFunction[i] = IrpStub;
  67
  68         //DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = SerialQueryInformation;
  69         DriverObject->MajorFunction[IRP_MJ_PNP] = SerenumPnp;
  70         //DriverObject->MajorFunction[IRP_MJ_POWER] = SerialPower;
  71
  72         return STATUS_SUCCESS;
  73 }