mirror of
https://github.com/reactos/reactos.git
synced 2024-08-29 14:48:37 +00:00
296 lines
6.1 KiB
C
296 lines
6.1 KiB
C
/*
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* PROJECT: ReactOS Universal Serial Bus Bulk Storage Driver
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: drivers/usb/usbstor/usbstor.c
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* PURPOSE: USB block storage device driver.
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* PROGRAMMERS:
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* James Tabor
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Johannes Anderwald
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*/
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/* INCLUDES ******************************************************************/
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#include "usbstor.h"
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#define NDEBUG
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#include <debug.h>
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/* PUBLIC AND PRIVATE FUNCTIONS **********************************************/
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NTSTATUS
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NTAPI
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USBSTOR_AddDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT PhysicalDeviceObject)
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{
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NTSTATUS Status;
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PDEVICE_OBJECT DeviceObject;
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PFDO_DEVICE_EXTENSION DeviceExtension;
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//
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// lets create the device
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//
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Status = IoCreateDevice(DriverObject, sizeof(FDO_DEVICE_EXTENSION), 0, FILE_DEVICE_BUS_EXTENDER, FILE_AUTOGENERATED_DEVICE_NAME | FILE_DEVICE_SECURE_OPEN, FALSE, &DeviceObject);
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//
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// check for success
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//
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("USBSTOR_AddDevice: Failed to create FDO Status %x\n", Status);
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return Status;
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}
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//
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// get device extension
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//
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DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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ASSERT(DeviceExtension);
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//
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// zero device extension
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//
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RtlZeroMemory(DeviceExtension, sizeof(FDO_DEVICE_EXTENSION));
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//
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// initialize device extension
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//
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DeviceExtension->Common.IsFDO = TRUE;
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DeviceExtension->FunctionalDeviceObject = DeviceObject;
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DeviceExtension->PhysicalDeviceObject = PhysicalDeviceObject;
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DeviceExtension->LowerDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject);
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//
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// init timer
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//
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IoInitializeTimer(DeviceObject, USBSTOR_TimerRoutine, (PVOID)DeviceExtension);
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//
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// did attaching fail
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//
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if (!DeviceExtension->LowerDeviceObject)
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{
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//
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// device removed
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//
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IoDeleteDevice(DeviceObject);
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return STATUS_DEVICE_REMOVED;
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}
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//
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// set device flags
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//
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DeviceObject->Flags |= DO_BUFFERED_IO | DO_POWER_PAGABLE;
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//
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// device is initialized
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//
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DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
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//
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// done
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//
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return STATUS_SUCCESS;
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}
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VOID
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NTAPI
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USBSTOR_Unload(
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PDRIVER_OBJECT DriverObject)
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{
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//
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// no-op
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//
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}
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NTSTATUS
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NTAPI
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USBSTOR_DispatchClose(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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//
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// function always succeeds ;)
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//
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DPRINT("USBSTOR_DispatchClose\n");
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Irp->IoStatus.Information = 0;
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Irp->IoStatus.Status = STATUS_SUCCESS;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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USBSTOR_DispatchDeviceControl(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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NTSTATUS Status;
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//
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// handle requests
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//
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Status = USBSTOR_HandleDeviceControl(DeviceObject, Irp);
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//
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// complete request
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//
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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//
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// done
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//
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return Status;
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}
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NTSTATUS
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NTAPI
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USBSTOR_DispatchScsi(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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//
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// handle requests
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//
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return USBSTOR_HandleInternalDeviceControl(DeviceObject, Irp);
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}
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NTSTATUS
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NTAPI
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USBSTOR_DispatchReadWrite(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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//
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// read write ioctl is not supported
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//
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Irp->IoStatus.Information = 0;
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_INVALID_PARAMETER;
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}
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NTSTATUS
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NTAPI
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USBSTOR_DispatchPnp(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PUSBSTOR_COMMON_DEVICE_EXTENSION DeviceExtension;
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//
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// get common device extension
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//
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DeviceExtension = (PUSBSTOR_COMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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//
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// is it for the FDO
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//
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if (DeviceExtension->IsFDO)
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{
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//
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// dispatch pnp request to fdo pnp handler
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//
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return USBSTOR_FdoHandlePnp(DeviceObject, Irp);
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}
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else
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{
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//
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// dispatch request to pdo pnp handler
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//
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return USBSTOR_PdoHandlePnp(DeviceObject, Irp);
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}
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}
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NTSTATUS
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NTAPI
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USBSTOR_DispatchPower(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PFDO_DEVICE_EXTENSION DeviceExtension;
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// get common device extension
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DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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if (DeviceExtension->Common.IsFDO)
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{
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PoStartNextPowerIrp(Irp);
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IoSkipCurrentIrpStackLocation(Irp);
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return PoCallDriver(DeviceExtension->LowerDeviceObject, Irp);
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}
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else
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{
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PoStartNextPowerIrp(Irp);
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Irp->IoStatus.Status = STATUS_SUCCESS;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_SUCCESS;
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}
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}
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NTSTATUS
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NTAPI
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DriverEntry(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegPath)
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{
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DPRINT("********* USB Storage *********\n");
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//
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// driver unload routine
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//
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DriverObject->DriverUnload = USBSTOR_Unload;
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//
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// add device function
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//
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DriverObject->DriverExtension->AddDevice = USBSTOR_AddDevice;
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//
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// driver start i/o routine
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//
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DriverObject->DriverStartIo = USBSTOR_StartIo;
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//
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// create / close
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//
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DriverObject->MajorFunction[IRP_MJ_CREATE] = USBSTOR_DispatchClose;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = USBSTOR_DispatchClose;
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//
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// scsi pass through requests
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//
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = USBSTOR_DispatchDeviceControl;
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//
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// irp dispatch read / write
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//
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DriverObject->MajorFunction[IRP_MJ_READ] = USBSTOR_DispatchReadWrite;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = USBSTOR_DispatchReadWrite;
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//
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// scsi queue ioctl
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//
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DriverObject->MajorFunction[IRP_MJ_SCSI] = USBSTOR_DispatchScsi;
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//
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// pnp processing
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//
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DriverObject->MajorFunction[IRP_MJ_PNP] = USBSTOR_DispatchPnp;
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//
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// power processing
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//
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DriverObject->MajorFunction[IRP_MJ_POWER] = USBSTOR_DispatchPower;
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return STATUS_SUCCESS;
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}
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