reactos/drivers/bus/isapnp/pdo.c

   1 /*
   2  * PROJECT:         ReactOS ISA PnP Bus driver
   3  * FILE:            pdo.c
   4  * PURPOSE:         PDO-specific code
   5  * PROGRAMMERS:     Cameron Gutman (cameron.gutman@reactos.org)
   6  */
   7 #include <isapnp.h>
   8
   9 #define NDEBUG
  10 #include <debug.h>
  11
  12 NTSTATUS
  13 NTAPI
  14 IsaPdoQueryDeviceRelations(
  15   IN PISAPNP_LOGICAL_DEVICE LogDev,
  16   IN PIRP Irp,
  17   IN PIO_STACK_LOCATION IrpSp)
  18 {
  19   PDEVICE_RELATIONS DeviceRelations;
  20
  21   if (IrpSp->Parameters.QueryDeviceRelations.Type != TargetDeviceRelation)
  22       return Irp->IoStatus.Status;
  23
  24   DeviceRelations = ExAllocatePool(PagedPool, sizeof(*DeviceRelations));
  25   if (!DeviceRelations)
  26       return STATUS_INSUFFICIENT_RESOURCES;
  27
  28   DeviceRelations->Count = 1;
  29   DeviceRelations->Objects[0] = LogDev->Common.Self;
  30   ObReferenceObject(LogDev->Common.Self);
  31
  32   Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
  33
  34   return STATUS_SUCCESS;
  35 }
  36
  37 NTSTATUS
  38 NTAPI
  39 IsaPdoPnp(
  40   IN PISAPNP_LOGICAL_DEVICE LogDev,
  41   IN PIRP Irp,
  42   IN PIO_STACK_LOCATION IrpSp)
  43 {
  44   NTSTATUS Status = Irp->IoStatus.Status;
  45
  46   switch (IrpSp->MinorFunction)
  47   {
  48      case IRP_MN_START_DEVICE:
  49        Status = IsaHwActivateDevice(LogDev);
  50
  51        if (NT_SUCCESS(Status))
  52            LogDev->Common.State = dsStarted;
  53        break;
  54
  55      case IRP_MN_STOP_DEVICE:
  56        Status = IsaHwDeactivateDevice(LogDev);
  57
  58        if (NT_SUCCESS(Status))
  59            LogDev->Common.State = dsStopped;
  60        break;
  61
  62      case IRP_MN_QUERY_DEVICE_RELATIONS:
  63        Status = IsaPdoQueryDeviceRelations(LogDev, Irp, IrpSp);
  64        break;
  65
  66      case IRP_MN_QUERY_RESOURCES:
  67        DPRINT1("IRP_MN_QUERY_RESOURCES is UNIMPLEMENTED!\n");
  68        break;
  69
  70      case IRP_MN_QUERY_RESOURCE_REQUIREMENTS:
  71        DPRINT1("IRP_MN_QUERY_RESOURCE_REQUIREMENTS is UNIMPLEMENTED!\n");
  72        break;
  73
  74      default:
  75        DPRINT1("Unknown PnP code: %x\n", IrpSp->MinorFunction);
  76        break;
  77   }
  78
  79   Irp->IoStatus.Status = Status;
  80   IoCompleteRequest(Irp, IO_NO_INCREMENT);
  81
  82   return Status;
  83 }