reactos/drivers/usb/usbhub/usbhub.c

   1 /*
   2  * ReactOS USB hub driver
   3  * Copyright (C) 2004 Aleksey Bragin
   4  *           (C) 2005 Mark Tempel
   5  *           (C) 2005 Herv� Poussineau
   6  *           (C) 2010 Michael Martin
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  */
  23
  24 /* INCLUDES *******************************************************************/
  25 //#define NDEBUG
  26 #include "usbhub.h"
  27
  28 /* PUBLIC AND PRIVATE FUNCTIONS ***********************************************/
  29
  30 NTSTATUS NTAPI
  31 UsbhubAddDevice(
  32     IN PDRIVER_OBJECT DriverObject,
  33     IN PDEVICE_OBJECT Pdo)
  34 {
  35     PDEVICE_OBJECT Fdo;
  36     PHUB_DEVICE_EXTENSION DeviceExtension;
  37     NTSTATUS Status;
  38
  39     Status = IoCreateDevice(DriverObject,
  40         sizeof(HUB_DEVICE_EXTENSION),
  41         NULL, /* DeviceName */
  42         FILE_DEVICE_BUS_EXTENDER,
  43         FILE_AUTOGENERATED_DEVICE_NAME,
  44         FALSE,
  45         &Fdo);
  46
  47     if (!NT_SUCCESS(Status))
  48     {
  49         DPRINT1("Usbhub: IoCreateDevice() failed with status 0x%08lx\n", Status);
  50         return Status;
  51     }
  52
  53     // zerofill device extension
  54     DeviceExtension = (PHUB_DEVICE_EXTENSION)Fdo->DeviceExtension;
  55     RtlZeroMemory(DeviceExtension, sizeof(HUB_DEVICE_EXTENSION));
  56
  57     DeviceExtension->IsFDO = TRUE;
  58     Fdo->Flags |= DO_POWER_PAGABLE;
  59     //Status = IoAttachDeviceToDeviceStackSafe(Fdo, Pdo, &DeviceExtension->LowerDevice);
  60     DeviceExtension->LowerDevice = IoAttachDeviceToDeviceStack(Fdo, Pdo);
  61     if (!NT_SUCCESS(Status))
  62     {
  63         DPRINT("Usbhub: IoAttachDeviceToDeviceStackSafe() failed with status 0x%08lx\n", Status);
  64         IoDeleteDevice(Fdo);
  65         return Status;
  66     }
  67     Fdo->Flags |= DO_BUFFERED_IO;
  68
  69     Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
  70
  71     return STATUS_SUCCESS;
  72 }
  73
  74 static NTSTATUS NTAPI
  75 IrpStub(
  76     IN PDEVICE_OBJECT DeviceObject,
  77     IN PIRP Irp)
  78 {
  79     NTSTATUS Status;
  80
  81     if (((PHUB_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
  82     {
  83         DPRINT1("Usbhub: FDO stub for major function 0x%lx\n",
  84             IoGetCurrentIrpStackLocation(Irp)->MajorFunction);
  85         return ForwardIrpAndForget(DeviceObject, Irp);
  86     }
  87     else
  88     {
  89         /* We can't forward request to the lower driver, because
  90          * we are a Pdo, so we don't have lower driver...
  91          */
  92         DPRINT1("Usbhub: PDO stub for major function 0x%lx\n",
  93             IoGetCurrentIrpStackLocation(Irp)->MajorFunction);
  94 #ifndef NDEBUG
  95         DbgBreakPoint();
  96 #endif
  97     }
  98
  99     Status = Irp->IoStatus.Status;
 100     IoCompleteRequest(Irp, IO_NO_INCREMENT);
 101     return Status;
 102 }
 103
 104 static NTSTATUS NTAPI
 105 DispatchDeviceControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
 106 {
 107     DPRINT1("Usbhub: DispatchDeviceControl\n");
 108     if (((PHUB_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
 109         return UsbhubDeviceControlFdo(DeviceObject, Irp);
 110     else
 111         return IrpStub(DeviceObject, Irp);
 112 }
 113
 114 static NTSTATUS NTAPI
 115 DispatchInternalDeviceControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
 116 {
 117     DPRINT1("Usbhub: DispatchInternalDeviceControl\n");
 118     if (((PHUB_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
 119         return IrpStub(DeviceObject, Irp);
 120     else
 121         return UsbhubInternalDeviceControlPdo(DeviceObject, Irp);
 122 }
 123
 124 static NTSTATUS NTAPI
 125 DispatchPnp(PDEVICE_OBJECT DeviceObject, PIRP Irp)
 126 {
 127     DPRINT1("Usbhub: DispatchPnp\n");
 128     if (((PHUB_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
 129         return UsbhubPnpFdo(DeviceObject, Irp);
 130     else
 131         return UsbhubPnpPdo(DeviceObject, Irp);
 132 }
 133
 134 /*
 135  * Standard DriverEntry method.
 136  */
 137 NTSTATUS NTAPI
 138 DriverEntry(
 139     IN PDRIVER_OBJECT DriverObject,
 140     IN PUNICODE_STRING RegistryPath)
 141 {
 142     ULONG i;
 143
 144     DriverObject->DriverExtension->AddDevice = UsbhubAddDevice;
 145     DPRINT1("Usbhub: DriverEntry\n");
 146
 147     for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
 148         DriverObject->MajorFunction[i] = IrpStub;
 149
 150     DriverObject->MajorFunction[IRP_MJ_CREATE] = UsbhubCreate;
 151     DriverObject->MajorFunction[IRP_MJ_CLOSE] = UsbhubClose;
 152     DriverObject->MajorFunction[IRP_MJ_CLEANUP] = UsbhubCleanup;
 153     DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = DispatchDeviceControl;
 154     DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = DispatchInternalDeviceControl;
 155     DriverObject->MajorFunction[IRP_MJ_PNP] = DispatchPnp;
 156
 157     return STATUS_SUCCESS;
 158 }
 159