www.pudn.com > LS120--USB.zip > usbbulk.cpp

// UsbBulk.h - a simple USB bulk driver 
// 
//============================================================================= 
// 
// Compuware Corporation 
// NuMega Lab 
// 9 Townsend West 
// Nashua, NH 03060  USA 
// 
// Copyright (c) 1998 Compuware Corporation. All Rights Reserved. 
// Unpublished - rights reserved under the Copyright laws of the 
// United States. 
// 
//============================================================================= 
 
#define VDW_MAIN 
#include         // Base Driver::Works includes 
#include  
 
#include "bulkdev.h" 
#include "usbbulk.h" 
 
KTrace Tracer("UsbBulk"); 
 
///////////////////////////////////////////////////////////////////// 
// Begin INIT section 
#pragma code_seg("INIT") 
 
DECLARE_DRIVER_CLASS(UsbBulkDriver, NULL) 
 
 
///////////////////////////////////////////////////////////////////// 
// Driver Entry 
//  
// This is the first entry point called by the system when the driver 
// is loaded. 
 
NTSTATUS UsbBulkDriver::DriverEntry(PUNICODE_STRING RegistryPath) 
{ 
	Tracer << "In Driver Entry"; 
 
    m_Unit = 0; 
 
    return STATUS_SUCCESS; 
} 
 
#pragma code_seg() 
// End INIT section 
///////////////////////////////////////////////////////////////////// 
 
 
 
///////////////////////////////////////////////////////////////////// 
// Add Device 
// 
// The system calls this entry point when it detects a device for which 
// this driver is responsible. 
// 
// Input 
//   Pdo      Physical Device Object. This is a pointer to a system device 
//            object that represents the physical device. 
// 
// This function creates the Functional Device Object, or FDO. The FDO 
// enables this driver to handle requests for the physical device.  
 
NTSTATUS UsbBulkDriver::AddDevice(PDEVICE_OBJECT Pdo) 
{ 
	Tracer << "Into AddDevice\n"; 
 
    UsbBulkDevice* pDevice =  
        new (NonPagedPool) UsbBulkDevice(Pdo, m_Unit); 
 
    if (pDevice) 
    { 
        NTSTATUS status = pDevice->ConstructorStatus(); 
 
        if ( !NT_SUCCESS(status) ) { 
			Tracer << "Error constructing device UsbBulk" 
					<< (ULONG)m_Unit << "\n"; 
 
            delete pDevice; 
 
        } else { 
            m_Unit++; 
        } 
 
        return status; 
    } 
    else { 
		Tracer << "Error creating device UsbBulk" 
				<< (ULONG)m_Unit << "\n"; 
 
        return STATUS_INSUFFICIENT_RESOURCES; 
    } 
}