patch-2.4.21 linux-2.4.21/drivers/usb/serial/kobil_sct.c

• Lines: 716
• Date: 2003-06-13 07:51:37.000000000 -0700
• Orig file: linux-2.4.20/drivers/usb/serial/kobil_sct.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/drivers/usb/serial/kobil_sct.c linux-2.4.21/drivers/usb/serial/kobil_sct.c
@@ -0,0 +1,715 @@
+/*
+ *  KOBIL USB Smart Card Terminal Driver
+ *
+ *  Copyright (C) 2002  KOBIL Systems GmbH 
+ *  Author: Thomas Wahrenbruch
+ *
+ *  Contact: linuxusb@kobil.de
+ *
+ *  This program is largely derived from work by the linux-usb group
+ *  and associated source files.  Please see the usb/serial files for
+ *  individual credits and copyrights.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
+ *  patience.
+ *
+ * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
+ * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
+ * 
+ * TODO: High baudrates
+ *
+ * (12/03/2002) tw
+ *      Fixed bug with Pro-readers and PNP
+ *
+ * (11/13/2002) tw
+ *      Initial version.
+ */
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+
+#include <linux/ioctl.h>
+
+
+#include "kobil_sct.h"
+
+#ifdef CONFIG_USB_SERIAL_DEBUG
+	static int debug = 1;
+#else
+	static int debug;
+#endif
+
+#include "usb-serial.h"
+
+/* Version Information */
+#define DRIVER_VERSION "12/03/2002"
+#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
+#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
+
+#define KOBIL_VENDOR_ID	           0x0D46
+#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
+#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
+#define KOBIL_USBTWIN_PRODUCT_ID   0x0078
+
+#define KOBIL_TIMEOUT    500
+#define KOBIL_BUF_LENGTH 300
+
+
+/* Function prototypes */
+static int  kobil_startup (struct usb_serial *serial);
+static void kobil_shutdown (struct usb_serial *serial);
+static int  kobil_open (struct usb_serial_port *port, struct file *filp);
+static void kobil_close (struct usb_serial_port *port, struct file *filp);
+static int  kobil_write (struct usb_serial_port *port, int from_user, 
+			 const unsigned char *buf, int count);
+static int  kobil_write_room(struct usb_serial_port *port);
+static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
+			unsigned int cmd, unsigned long arg);
+static void kobil_read_int_callback( struct urb *urb );
+static void kobil_write_callback( struct urb *purb );
+
+
+static struct usb_device_id id_table [] = {
+	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
+	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
+	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
+	{ }			/* Terminating entry */
+};
+
+
+MODULE_DEVICE_TABLE (usb, id_table);
+
+struct usb_serial_device_type kobil_device = {
+	.owner =                THIS_MODULE,
+	.name =			"KOBIL USB smart card terminal",
+	.id_table =		id_table,
+	.num_interrupt_in =	NUM_DONT_CARE,
+	.num_bulk_in =		0,
+	.num_bulk_out =		0,
+	.num_ports =		1,
+	.startup =		kobil_startup,
+	.shutdown =		kobil_shutdown,
+	.ioctl =		kobil_ioctl,
+	.open =			kobil_open,
+	.close =		kobil_close,
+	.write =		kobil_write,
+	.write_room =           kobil_write_room,
+	.read_int_callback =	kobil_read_int_callback,
+};
+
+
+struct kobil_private {
+	int write_int_endpoint_address;
+	int read_int_endpoint_address;
+	unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
+	int filled;  // index of the last char in buf
+	int cur_pos; // index of the next char to send in buf
+	__u16 device_type;
+	int line_state;
+	struct termios internal_termios;
+};
+
+
+static int kobil_startup (struct usb_serial *serial)
+{
+	int i;
+	struct kobil_private *priv;
+	struct usb_device *pdev;
+	struct usb_config_descriptor *actconfig;
+	struct usb_interface *interface;
+	struct usb_interface_descriptor *altsetting;
+	struct usb_endpoint_descriptor *endpoint;
+
+	serial->port->private = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
+	if (!serial->port->private){
+		return -1;
+	}
+ 
+	priv = (struct kobil_private *) serial->port->private;
+	priv->filled = 0;
+	priv->cur_pos = 0;
+	priv->device_type = serial->product;
+	priv->line_state = 0;
+	
+	switch (priv->device_type){
+	case KOBIL_ADAPTER_B_PRODUCT_ID:
+		printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
+		break;
+	case KOBIL_ADAPTER_K_PRODUCT_ID:
+		printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
+		break;
+	case KOBIL_USBTWIN_PRODUCT_ID:
+		printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
+		break;
+	}
+
+	// search for the neccessary endpoints
+	pdev = serial->dev;
+ 	actconfig = pdev->actconfig;
+ 	interface = actconfig->interface;
+	altsetting = interface->altsetting;
+ 	endpoint = altsetting->endpoint;
+  
+ 	for (i = 0; i < altsetting->bNumEndpoints; i++) {
+		endpoint = &altsetting->endpoint[i];
+		if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && 
+ 		    ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
+		 	dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->bEndpointAddress);
+		 	priv->write_int_endpoint_address = endpoint->bEndpointAddress;
+ 		}
+ 		if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && 
+ 		    ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
+		 	dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->bEndpointAddress);
+		 	priv->read_int_endpoint_address = endpoint->bEndpointAddress;
+	 	}
+	}
+	return 0;
+}
+
+
+static void kobil_shutdown (struct usb_serial *serial)
+{
+	int i;
+  	dbg("%s - port %d", __FUNCTION__, serial->port->number);
+
+	for (i=0; i < serial->num_ports; ++i) {
+		while (serial->port[i].open_count > 0) {
+			kobil_close (&serial->port[i], NULL);
+		}
+		if (serial->port[i].private) {
+			kfree(serial->port[i].private);
+		}
+	} 
+}
+
+
+static int kobil_open (struct usb_serial_port *port, struct file *filp)
+{
+	int i, result = 0;
+	struct kobil_private *priv;
+	unsigned char *transfer_buffer;
+	int transfer_buffer_length = 8;
+	int write_urb_transfer_buffer_length = 8;
+	
+  	dbg("%s - port %d", __FUNCTION__, port->number);
+	priv = (struct kobil_private *) port->private;
+	priv->line_state = 0;
+
+	if (port_paranoia_check (port, __FUNCTION__))
+		return -ENODEV;
+	
+	// someone sets the dev to 0 if the close method has been called
+	port->interrupt_in_urb->dev = port->serial->dev;
+
+	
+	/* force low_latency on so that our tty_push actually forces
+	 * the data through, otherwise it is scheduled, and with high
+	 * data rates (like with OHCI) data can get lost.
+	 */
+	port->tty->low_latency = 1;
+
+	// without this, every push_tty_char is echoed :-(  
+	port->tty->termios->c_lflag = 0;
+	port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
+	port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
+	port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
+	
+	// set up internal termios structure 
+	priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
+	priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
+	priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
+	priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
+	
+	for (i=0; i<NCCS; i++) {
+		priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
+	}
+	
+	// allocate memory for transfer buffer
+	transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
+	if (! transfer_buffer) {
+		return -1;
+	} else {
+		memset(transfer_buffer, 0, transfer_buffer_length);
+	}
+	
+	// allocate write_urb
+	if (!port->write_urb) { 
+		dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
+		port->write_urb = usb_alloc_urb(0);  
+		if (!port->write_urb) {
+			dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
+			kfree(transfer_buffer);
+			return -1;
+		}
+	}
+ 
+	// allocate memory for write_urb transfer buffer
+	port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
+	if (! port->write_urb->transfer_buffer) {
+		kfree(transfer_buffer);
+		return -1;
+	} 
+
+	// get hardware version
+	result = usb_control_msg( port->serial->dev, 
+				  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+				  SUSBCRequest_GetMisc,
+				  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
+				  SUSBCR_MSC_GetHWVersion,
+				  0,
+				  transfer_buffer,
+				  transfer_buffer_length,
+				  KOBIL_TIMEOUT
+		);
+	dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
+	dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
+	
+	// get firmware version
+	result = usb_control_msg( port->serial->dev, 
+				  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+				  SUSBCRequest_GetMisc,
+				  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
+				  SUSBCR_MSC_GetFWVersion,
+				  0,
+				  transfer_buffer,
+				  transfer_buffer_length,
+				  KOBIL_TIMEOUT
+		);
+	dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
+	dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
+
+	if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
+		// Setting Baudrate, Parity and Stopbits
+		result = usb_control_msg( port->serial->dev, 
+					  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+					  SUSBCRequest_SetBaudRateParityAndStopBits,
+					  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+					  SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
+					  0,
+					  transfer_buffer,
+					  0,
+					  KOBIL_TIMEOUT
+			);
+		dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
+		
+		// reset all queues
+		result = usb_control_msg( port->serial->dev, 
+					  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+					  SUSBCRequest_Misc,
+					  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+					  SUSBCR_MSC_ResetAllQueues,
+					  0,
+					  transfer_buffer,
+					  0,
+					  KOBIL_TIMEOUT
+			);
+		dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
+	}
+
+	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
+		// start reading (Adapter B 'cause PNP string)
+		result = usb_submit_urb( port->interrupt_in_urb ); 
+		dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
+	}
+
+	kfree(transfer_buffer);
+	return 0;
+}
+
+
+static void kobil_close (struct usb_serial_port *port, struct file *filp)
+{
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (port->write_urb){
+		usb_unlink_urb( port->write_urb );
+		usb_free_urb( port->write_urb );
+		port->write_urb = 0;
+	}
+	if (port->interrupt_in_urb){
+		usb_unlink_urb (port->interrupt_in_urb);
+	}
+}
+
+
+static void kobil_read_int_callback( struct urb *purb )
+{  
+	int i;
+	struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
+	struct tty_struct *tty;
+	unsigned char *data = purb->transfer_buffer;
+	char *dbg_data;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (purb->status) {
+		dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
+		return;
+	}
+	
+	tty = port->tty; 
+	if (purb->actual_length) {
+		
+		// BEGIN DEBUG
+		dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);  
+		if (! dbg_data) {
+			return;
+		}
+		memset(dbg_data, 0, (3 *  purb->actual_length + 10));
+		for (i = 0; i < purb->actual_length; i++) { 
+			sprintf(dbg_data +3*i, "%02X ", data[i]); 
+		}
+		dbg(" <-- %s", dbg_data );
+		kfree(dbg_data);
+		// END DEBUG
+
+		for (i = 0; i < purb->actual_length; ++i) {
+			// if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
+			if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
+				tty_flip_buffer_push(tty);
+			}
+			// this doesn't actually push the data through unless tty->low_latency is set
+			tty_insert_flip_char(tty, data[i], 0);
+		}
+		tty_flip_buffer_push(tty);
+	}
+}
+
+
+static void kobil_write_callback( struct urb *purb )
+{
+}
+
+
+static int kobil_write (struct usb_serial_port *port, int from_user, 
+			const unsigned char *buf, int count)
+{
+	int length = 0;
+	int result = 0;
+	int todo = 0;
+	struct kobil_private * priv;
+	int i;
+	char *data;
+
+	if (count == 0) {
+		dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
+		return 0;
+	}
+
+	priv = (struct kobil_private *) port->private;
+
+	if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
+		dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
+		return -ENOMEM;
+	}
+	
+	// BEGIN DEBUG
+	data = (unsigned char *) kmalloc((3 * count + 10) * sizeof(char), GFP_KERNEL);  
+	if (! data) {
+		return (-1);
+	}
+	memset(data, 0, (3 * count + 10));
+	for (i = 0; i < count; i++) { 
+		sprintf(data +3*i, "%02X ", buf[i]); 
+	} 
+	dbg(" %d --> %s", port->number, data );
+	kfree(data);
+	// END DEBUG
+
+	// Copy data to buffer
+	if (from_user) {
+		if (copy_from_user(priv->buf + priv->filled, buf, count)) {
+			return -EFAULT;
+		}
+	} else {
+		memcpy (priv->buf + priv->filled, buf, count);
+	}
+
+	priv->filled = priv->filled + count;
+  
+
+	// only send complete block. TWIN and adapter K use the same protocol.
+	if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) || 
+	     ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
+		
+		// stop reading (except TWIN)
+		if (priv->device_type != KOBIL_USBTWIN_PRODUCT_ID) {
+			usb_unlink_urb( port->interrupt_in_urb );
+		}
+		
+		todo = priv->filled - priv->cur_pos;
+
+		while(todo > 0) {
+			// max 8 byte in one urb (endpoint size)
+			length = (todo < 8) ? todo : 8;
+			// copy data to transfer buffer
+			memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
+			
+			usb_fill_bulk_urb( port->write_urb,
+					   port->serial->dev,
+					   usb_sndbulkpipe( port->serial->dev, priv->write_int_endpoint_address),
+					   port->write_urb->transfer_buffer,
+					   length,
+					   kobil_write_callback,
+					   port
+				);
+
+			priv->cur_pos = priv->cur_pos + length;
+			result = usb_submit_urb( port->write_urb );
+			dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
+			todo = priv->filled - priv->cur_pos;
+
+			if (todo > 0) {
+				//mdelay(16);
+				set_current_state(TASK_UNINTERRUPTIBLE);
+				schedule_timeout(24 * HZ / 1000);
+			}
+
+		} // end while
+		
+		priv->filled = 0;
+		priv->cur_pos = 0;
+				
+		// start reading (except TWIN)	
+		if (priv->device_type != KOBIL_USBTWIN_PRODUCT_ID) {
+			// someone sets the dev to 0 if the close method has been called
+			port->interrupt_in_urb->dev = port->serial->dev;
+		
+			// start reading
+			result = usb_submit_urb( port->interrupt_in_urb ); 
+			dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
+		}
+		
+	}
+	return count;  
+}
+
+
+static int kobil_write_room (struct usb_serial_port *port)
+{
+	return 8;
+}
+
+
+static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
+			unsigned int cmd, unsigned long arg)
+{
+	struct kobil_private * priv;
+	int mask;
+	int result;
+	unsigned short urb_val = 0;
+	unsigned char *transfer_buffer;
+	int transfer_buffer_length = 8;
+	char *settings;
+
+	priv = (struct kobil_private *) port->private;
+	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) {
+		// This device doesn't support ioctl calls
+		return 0;
+	}
+
+	switch (cmd) {
+	case TCGETS:   // 0x5401
+		result = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct termios));
+		if (result) {
+			dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
+			return(result);
+		}
+		kernel_termios_to_user_termios((struct termios *)arg, &priv->internal_termios);
+		return 0;
+
+	case TCSETS:   // 0x5402
+		if (! &port->tty->termios) {
+			dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
+			return -ENOTTY;
+		}
+		result = verify_area(VERIFY_READ, (void *)arg, sizeof(struct termios));
+		if (result) {
+			dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
+			return result;
+		}
+		user_termios_to_kernel_termios( &priv->internal_termios, (struct termios *)arg);
+		
+		settings = (unsigned char *) kmalloc(50, GFP_KERNEL);  
+		if (! settings) {
+			return -ENOBUFS;
+		}
+		memset(settings, 0, 50);
+
+		switch (priv->internal_termios.c_cflag & CBAUD) {
+		case B1200:
+			urb_val = SUSBCR_SBR_1200;
+			strcat(settings, "1200 ");
+			break;
+		case B9600:
+		default:
+			urb_val = SUSBCR_SBR_9600;
+			strcat(settings, "9600 ");
+			break;
+		}
+
+		urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
+		strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
+		
+		if (priv->internal_termios.c_cflag & PARENB) {
+			if  (priv->internal_termios.c_cflag & PARODD) {
+				urb_val |= SUSBCR_SPASB_OddParity;
+				strcat(settings, "Odd Parity");
+			} else {
+				urb_val |= SUSBCR_SPASB_EvenParity;
+				strcat(settings, "Even Parity");
+			}
+		} else {
+			urb_val |= SUSBCR_SPASB_NoParity;
+			strcat(settings, "No Parity");
+		}
+		dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
+
+		result = usb_control_msg( port->serial->dev, 
+					  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+					  SUSBCRequest_SetBaudRateParityAndStopBits,
+					  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+					  urb_val,
+					  0,
+					  settings,
+					  0,
+					  KOBIL_TIMEOUT
+			);
+		
+		dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
+		kfree(settings);
+		return 0;
+    
+	case TCFLSH:   // 0x540B
+		result = usb_control_msg( port->serial->dev, 
+		 			  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+					  SUSBCRequest_Misc,
+					  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+					  SUSBCR_MSC_ResetAllQueues,
+					  0,
+					  NULL,
+					  0,
+					  KOBIL_TIMEOUT
+			);
+		
+		dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
+		return ((result < 0) ? -EFAULT : 0);
+
+	case TIOCMGET: // 0x5415
+		// allocate memory for transfer buffer
+		transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
+		if (! transfer_buffer) {
+			return -ENOBUFS;
+		} else {
+			memset(transfer_buffer, 0, transfer_buffer_length);
+		}
+
+		result = usb_control_msg( port->serial->dev, 
+					  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+					  SUSBCRequest_GetStatusLineState,
+					  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
+					  0,
+					  0,
+					  transfer_buffer,
+					  transfer_buffer_length,
+					  KOBIL_TIMEOUT
+			);
+	
+		dbg("%s - port %d Send get_status_line_state (TIOCMGET) URB returns: %i. Statusline: %02x", 
+		    __FUNCTION__, port->number, result, transfer_buffer[0]);
+	
+		if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
+			priv->line_state |= TIOCM_DSR;
+		} else {
+			priv->line_state &= ~TIOCM_DSR; 
+		}
+		
+		kfree(transfer_buffer);
+		return put_user(priv->line_state, (unsigned long *) arg);
+		
+	case TIOCMSET: // 0x5418
+		if (get_user(mask, (unsigned long *) arg)){
+			return -EFAULT;
+		}
+		if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
+			if ((mask & TIOCM_DTR) != 0){
+				dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
+			} else {
+				dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
+			} 
+			result = usb_control_msg( port->serial->dev, 
+						  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+						  SUSBCRequest_SetStatusLinesOrQueues,
+						  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+						  ( ((mask & TIOCM_DTR) != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
+						  0,
+						  NULL,
+						  0,
+						  KOBIL_TIMEOUT
+				);
+			
+		} else {
+			if ((mask & TIOCM_RTS) != 0){
+				dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
+			} else {
+				dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
+			}
+			result = usb_control_msg( port->serial->dev, 
+						  usb_rcvctrlpipe(port->serial->dev, 0 ), 
+						  SUSBCRequest_SetStatusLinesOrQueues,
+						  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+						  (((mask & TIOCM_RTS) != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
+						  0,
+						  NULL,
+						  0,
+						  KOBIL_TIMEOUT
+				);
+		}
+		dbg("%s - port %d Send set_status_line (TIOCMSET) URB returns: %i", __FUNCTION__, port->number, result);
+		return ((result < 0) ? -EFAULT : 0);
+	}
+	return 0;
+}
+
+
+static int __init kobil_init (void)
+{
+	usb_serial_register (&kobil_device);
+
+	info(DRIVER_VERSION " " DRIVER_AUTHOR);
+	info(DRIVER_DESC);
+
+	return 0;
+}
+
+
+static void __exit kobil_exit (void)
+{
+	usb_serial_deregister (&kobil_device);
+}
+
+module_init(kobil_init);
+module_exit(kobil_exit);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE( "GPL" );
+
+MODULE_PARM(debug, "i");
+MODULE_PARM_DESC(debug, "Debug enabled or not");