reactos/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     InitializeListHead(&FDODeviceExtension->ResetPortListHead);
  47     InitializeListHead(&FDODeviceExtension->CyclePortListHead);
  48     KeInitializeSpinLock(&FDODeviceExtension->Lock);
  49
  50     FDODeviceExtension->NextDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject);
  51     if (!FDODeviceExtension->NextDeviceObject)
  52     {
  53         // failed to attach
  54         DPRINT1("USBCCGP_AddDevice failed to attach device\n");
  55         IoDeleteDevice(DeviceObject);
  56         return STATUS_DEVICE_REMOVED;
  57     }
  58
  59     // set device flags
  60     DeviceObject->Flags |= DO_BUFFERED_IO | DO_POWER_PAGABLE;
  61
  62     // device is initialized
  63     DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
  64
  65     // device initialized
  66     return Status;
  67 }
  68
  69 NTSTATUS
  70 NTAPI
  71 USBCCGP_CreateClose(
  72     PDEVICE_OBJECT DeviceObject,
  73     PIRP Irp)
  74 {
  75     PCOMMON_DEVICE_EXTENSION DeviceExtension;
  76     PFDO_DEVICE_EXTENSION FDODeviceExtension;
  77
  78     // get common device extension
  79     DeviceExtension = (PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  80
  81     // is it a fdo
  82     if (DeviceExtension->IsFDO)
  83     {
  84         // forward and forget
  85         IoSkipCurrentIrpStackLocation(Irp);
  86
  87         // get fdo
  88         FDODeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  89
  90         // call lower driver
  91         return IoCallDriver(FDODeviceExtension->NextDeviceObject, Irp);
  92     }
  93     else
  94     {
  95         // pdo not supported
  96         Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
  97         IoCompleteRequest(Irp, IO_NO_INCREMENT);
  98         return STATUS_NOT_SUPPORTED;
  99     }
 100 }
 101
 102 NTSTATUS
 103 NTAPI
 104 USBCCGP_Dispatch(
 105     PDEVICE_OBJECT DeviceObject,
 106     PIRP Irp)
 107 {
 108     PCOMMON_DEVICE_EXTENSION DeviceExtension;
 109     PIO_STACK_LOCATION IoStack;
 110
 111     // get common device extension
 112     DeviceExtension = (PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
 113
 114     // get current stack location
 115     IoStack = IoGetCurrentIrpStackLocation(Irp);
 116
 117     if (IoStack->MajorFunction == IRP_MJ_CREATE || IoStack->MajorFunction == IRP_MJ_CLOSE)
 118     {
 119         // dispatch to default handler
 120         return USBCCGP_CreateClose(DeviceObject, Irp);
 121     }
 122
 123     if (DeviceExtension->IsFDO)
 124     {
 125         // handle request for FDO
 126         return FDO_Dispatch(DeviceObject, Irp);
 127     }
 128     else
 129     {
 130         // handle request for PDO
 131         return PDO_Dispatch(DeviceObject, Irp);
 132     }
 133 }
 134
 135 NTSTATUS
 136 NTAPI
 137 DriverEntry(
 138     PDRIVER_OBJECT DriverObject,
 139     PUNICODE_STRING RegistryPath)
 140 {
 141
 142     // initialize driver object
 143     DPRINT("[USBCCGP] DriverEntry\n");
 144     DriverObject->DriverExtension->AddDevice = USBCCGP_AddDevice;
 145     DriverObject->MajorFunction[IRP_MJ_CREATE] = USBCCGP_Dispatch;
 146     DriverObject->MajorFunction[IRP_MJ_CLOSE] = USBCCGP_Dispatch;
 147     DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = USBCCGP_Dispatch;
 148     DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = USBCCGP_Dispatch;
 149     DriverObject->MajorFunction[IRP_MJ_POWER] = USBCCGP_Dispatch;
 150     DriverObject->MajorFunction[IRP_MJ_PNP] = USBCCGP_Dispatch;
 151
 152     // FIMXE query GenericCompositeUSBDeviceString
 153
 154     return STATUS_SUCCESS;
 155 }