drivers/usb/usbccgp/usbccgp.c

   1 /*
   2  * PROJECT:     ReactOS Universal Serial Bus Bulk Enhanced Host Controller Interface
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        drivers/usb/usbccgp/usbccgp.c
   5  * PURPOSE:     USB  device driver.
   6  * PROGRAMMERS:
   7  *              Michael Martin (michael.martin@reactos.org)
   8  *              Johannes Anderwald (johannes.anderwald@reactos.org)
   9  *              Cameron Gutman
  10  */
  11
  12 #include "usbccgp.h"
  13
  14 //
  15 // driver verifier
  16 //
  17 DRIVER_ADD_DEVICE USBCCGP_AddDevice;
  18
  19 NTSTATUS
  20 NTAPI
  21 USBCCGP_AddDevice(
  22     PDRIVER_OBJECT DriverObject,
  23     PDEVICE_OBJECT PhysicalDeviceObject)
  24 {
  25     NTSTATUS Status;
  26     PDEVICE_OBJECT DeviceObject;
  27     PFDO_DEVICE_EXTENSION FDODeviceExtension;
  28
  29     // lets create the device
  30     Status = IoCreateDevice(DriverObject, sizeof(FDO_DEVICE_EXTENSION), NULL, FILE_DEVICE_USB, FILE_AUTOGENERATED_DEVICE_NAME, FALSE, &DeviceObject);
  31     if (!NT_SUCCESS(Status))
  32     {
  33         // failed to create device
  34         DPRINT1("USBCCGP_AddDevice failed to create device with %x\n", Status);
  35         return Status;
  36     }
  37
  38     // get device extension
  39     FDODeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  40
  41     // init device extension
  42     RtlZeroMemory(FDODeviceExtension, sizeof(FDO_DEVICE_EXTENSION));
  43     FDODeviceExtension->Common.IsFDO = TRUE;
  44     FDODeviceExtension->DriverObject = DriverObject;
  45     FDODeviceExtension->PhysicalDeviceObject = PhysicalDeviceObject;
  46     FDODeviceExtension->NextDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject);
  47     if (!FDODeviceExtension->NextDeviceObject)
  48     {
  49         // failed to attach
  50         DPRINT1("USBCCGP_AddDevice failed to attach device\n");
  51         IoDeleteDevice(DeviceObject);
  52         return STATUS_DEVICE_REMOVED;
  53     }
  54
  55     // set device flags
  56     DeviceObject->Flags |= DO_BUFFERED_IO | DO_POWER_PAGABLE;
  57
  58     // device is initialized
  59     DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
  60
  61     // device initialized
  62     return Status;
  63 }
  64
  65 NTSTATUS
  66 NTAPI
  67 USBCCGP_CreateClose(
  68     PDEVICE_OBJECT DeviceObject,
  69     PIRP Irp)
  70 {
  71     PCOMMON_DEVICE_EXTENSION DeviceExtension;
  72     PFDO_DEVICE_EXTENSION FDODeviceExtension;
  73
  74     // get common device extension
  75     DeviceExtension = (PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  76
  77     // is it a fdo
  78     if (DeviceExtension->IsFDO)
  79     {
  80         // forward and forget
  81         IoSkipCurrentIrpStackLocation(Irp);
  82
  83         // get fdo
  84         FDODeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  85
  86         // call lower driver
  87         return IoCallDriver(FDODeviceExtension->NextDeviceObject, Irp);
  88     }
  89     else
  90     {
  91         // pdo not supported
  92         Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
  93         IoCompleteRequest(Irp, IO_NO_INCREMENT);
  94         return STATUS_NOT_SUPPORTED;
  95     }
  96 }
  97
  98 NTSTATUS
  99 NTAPI
 100 USBCCGP_Dispatch(
 101     PDEVICE_OBJECT DeviceObject,
 102     PIRP Irp)
 103 {
 104     PCOMMON_DEVICE_EXTENSION DeviceExtension;
 105     PIO_STACK_LOCATION IoStack;
 106
 107     // get common device extension
 108     DeviceExtension = (PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
 109
 110     // get current stack location
 111     IoStack = IoGetCurrentIrpStackLocation(Irp);
 112
 113     if (IoStack->MajorFunction == IRP_MJ_CREATE || IoStack->MajorFunction == IRP_MJ_CLOSE)
 114     {
 115         // dispatch to default handler
 116         return USBCCGP_CreateClose(DeviceObject, Irp);
 117     }
 118
 119     if (DeviceExtension->IsFDO)
 120     {
 121         // handle request for FDO
 122         return FDO_Dispatch(DeviceObject, Irp);
 123     }
 124     else
 125     {
 126         // handle request for PDO
 127         return PDO_Dispatch(DeviceObject, Irp);
 128     }
 129 }
 130
 131 NTSTATUS
 132 NTAPI
 133 DriverEntry(
 134     PDRIVER_OBJECT DriverObject,
 135     PUNICODE_STRING RegistryPath)
 136 {
 137
 138     // initialize driver object
 139     DriverObject->DriverExtension->AddDevice = USBCCGP_AddDevice;
 140     DriverObject->MajorFunction[IRP_MJ_CREATE] = USBCCGP_Dispatch;
 141     DriverObject->MajorFunction[IRP_MJ_CLOSE] = USBCCGP_Dispatch;
 142     DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = USBCCGP_Dispatch;
 143     DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = USBCCGP_Dispatch;
 144     DriverObject->MajorFunction[IRP_MJ_POWER] = USBCCGP_Dispatch;
 145     DriverObject->MajorFunction[IRP_MJ_PNP] = USBCCGP_Dispatch;
 146
 147     // FIMXE query GenericCompositeUSBDeviceString
 148
 149     return STATUS_SUCCESS;
 150 }