usbcore.c

ReactOs中的USB驱动

/*
   ReactOS specific functions for usbcore module
   by Aleksey Bragin ([e-mail])
*/

#include <ntddk.h>
#include <debug.h>
#include "../miniport/usb_wrapper.h"

USBPORT_INTERFACE UsbPortInterface;

void STDCALL RegisterPortDriver(PDRIVER_OBJECT pDrvObj, PUSBPORT_INTERFACE pUsbPortIntf)
{
	// copy struct to global var
	DPRINT("Miniport 0x%08X registered\n", (ULONG)pDrvObj);
	memcpy(&UsbPortInterface.KbdConnectData, &pUsbPortIntf->KbdConnectData, sizeof(CONNECT_DATA));
	memcpy(&UsbPortInterface.MouseConnectData, &pUsbPortIntf->MouseConnectData, sizeof(CONNECT_DATA));
}

NTSTATUS STDCALL
AddDevice(PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT pdo)
{
	DbgPrint("usbcore: AddDevice called\n");
	
	/* we need to do kind of this stuff here (as usual)
	PDEVICE_OBJECT fdo;
	IoCreateDevice(..., &fdo);
	pdx->LowerDeviceObject = 
	IoAttachDeviceToDeviceStack(fdo, pdo);*/

	return STATUS_SUCCESS;
}

VOID STDCALL
DriverUnload(PDRIVER_OBJECT DriverObject)
{
	// nothing to do here yet
}

// Dispatch PNP
NTSTATUS STDCALL
DispatchPnp(PDEVICE_OBJECT fdo, PIRP Irp)
{
	ULONG fcn;
	PIO_STACK_LOCATION stack;
	
	stack = IoGetCurrentIrpStackLocation(Irp);
	fcn = stack->MinorFunction; 
	DbgPrint("IRP_MJ_PNP, fcn=%d\n", fcn);

	if (fcn == IRP_MN_REMOVE_DEVICE)
	{
		IoDeleteDevice(fdo);
    }

	return STATUS_SUCCESS;
}

NTSTATUS STDCALL
DispatchPower(PDEVICE_OBJECT fido, PIRP Irp)
{
	DbgPrint("IRP_MJ_POWER dispatch\n");
	return STATUS_SUCCESS;
}

/*
 * Standard DriverEntry method.
 */
NTSTATUS STDCALL
DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegPath)
{
	DriverObject->DriverUnload = DriverUnload;
	DriverObject->DriverExtension->AddDevice = AddDevice;
	DriverObject->MajorFunction[IRP_MJ_PNP] = DispatchPnp;
	DriverObject->MajorFunction[IRP_MJ_POWER] = DispatchPower;

	return STATUS_SUCCESS;
}