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
   8 #include <isapnp.h>
   9
  10 #define NDEBUG
  11 #include <debug.h>
  12
  13 NTSTATUS
  14 NTAPI
  15 IsaPdoQueryDeviceRelations(
  16   IN PISAPNP_LOGICAL_DEVICE LogDev,
  17   IN PIRP Irp,
  18   IN PIO_STACK_LOCATION IrpSp)
  19 {
  20   PDEVICE_RELATIONS DeviceRelations;
  21
  22   if (IrpSp->Parameters.QueryDeviceRelations.Type != TargetDeviceRelation)
  23       return Irp->IoStatus.Status;
  24
  25   DeviceRelations = ExAllocatePool(PagedPool, sizeof(*DeviceRelations));
  26   if (!DeviceRelations)
  27       return STATUS_INSUFFICIENT_RESOURCES;
  28
  29   DeviceRelations->Count = 1;
  30   DeviceRelations->Objects[0] = LogDev->Common.Self;
  31   ObReferenceObject(LogDev->Common.Self);
  32
  33   Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
  34
  35   return STATUS_SUCCESS;
  36 }
  37
  38 NTSTATUS
  39 NTAPI
  40 IsaPdoPnp(
  41   IN PISAPNP_LOGICAL_DEVICE LogDev,
  42   IN PIRP Irp,
  43   IN PIO_STACK_LOCATION IrpSp)
  44 {
  45   NTSTATUS Status = Irp->IoStatus.Status;
  46
  47   switch (IrpSp->MinorFunction)
  48   {
  49      case IRP_MN_START_DEVICE:
  50        Status = IsaHwActivateDevice(LogDev);
  51
  52        if (NT_SUCCESS(Status))
  53            LogDev->Common.State = dsStarted;
  54        break;
  55
  56      case IRP_MN_STOP_DEVICE:
  57        Status = IsaHwDeactivateDevice(LogDev);
  58
  59        if (NT_SUCCESS(Status))
  60            LogDev->Common.State = dsStopped;
  61        break;
  62
  63      case IRP_MN_QUERY_DEVICE_RELATIONS:
  64        Status = IsaPdoQueryDeviceRelations(LogDev, Irp, IrpSp);
  65        break;
  66
  67      case IRP_MN_QUERY_RESOURCES:
  68        DPRINT1("IRP_MN_QUERY_RESOURCES is UNIMPLEMENTED!\n");
  69        break;
  70
  71      case IRP_MN_QUERY_RESOURCE_REQUIREMENTS:
  72        DPRINT1("IRP_MN_QUERY_RESOURCE_REQUIREMENTS is UNIMPLEMENTED!\n");
  73        break;
  74
  75      default:
  76        DPRINT1("Unknown PnP code: %x\n", IrpSp->MinorFunction);
  77        break;
  78   }
  79
  80   Irp->IoStatus.Status = Status;
  81   IoCompleteRequest(Irp, IO_NO_INCREMENT);
  82
  83   return Status;
  84 }