Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6
[linux-2.6] / drivers / usb / serial / kobil_sct.c
1 /*
2  *  KOBIL USB Smart Card Terminal Driver
3  *
4  *  Copyright (C) 2002  KOBIL Systems GmbH 
5  *  Author: Thomas Wahrenbruch
6  *
7  *  Contact: linuxusb@kobil.de
8  *
9  *  This program is largely derived from work by the linux-usb group
10  *  and associated source files.  Please see the usb/serial files for
11  *  individual credits and copyrights.
12  *
13  *  This program is free software; you can redistribute it and/or modify
14  *  it under the terms of the GNU General Public License as published by
15  *  the Free Software Foundation; either version 2 of the License, or
16  *  (at your option) any later version.
17  *
18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
19  *  patience.
20  *
21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
23  * 
24  * (21/05/2004) tw
25  *      Fix bug with P'n'P readers
26  *
27  * (28/05/2003) tw
28  *      Add support for KAAN SIM
29  *
30  * (12/09/2002) tw
31  *      Adapted to 2.5.
32  *
33  * (11/08/2002) tw
34  *      Initial version.
35  */
36
37
38 #include <linux/config.h>
39 #include <linux/kernel.h>
40 #include <linux/errno.h>
41 #include <linux/init.h>
42 #include <linux/slab.h>
43 #include <linux/tty.h>
44 #include <linux/tty_driver.h>
45 #include <linux/tty_flip.h>
46 #include <linux/module.h>
47 #include <linux/spinlock.h>
48 #include <asm/uaccess.h>
49 #include <linux/usb.h>
50 #include <linux/ioctl.h>
51 #include "usb-serial.h"
52 #include "kobil_sct.h"
53
54 static int debug;
55
56 /* Version Information */
57 #define DRIVER_VERSION "21/05/2004"
58 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
59 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
60
61 #define KOBIL_VENDOR_ID                 0x0D46
62 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
63 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
64 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
65 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
66
67 #define KOBIL_TIMEOUT           500
68 #define KOBIL_BUF_LENGTH        300
69
70
71 /* Function prototypes */
72 static int  kobil_startup (struct usb_serial *serial);
73 static void kobil_shutdown (struct usb_serial *serial);
74 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
75 static void kobil_close (struct usb_serial_port *port, struct file *filp);
76 static int  kobil_write (struct usb_serial_port *port, 
77                          const unsigned char *buf, int count);
78 static int  kobil_write_room(struct usb_serial_port *port);
79 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
80                         unsigned int cmd, unsigned long arg);
81 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
82 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
83                            unsigned int set, unsigned int clear);
84 static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
85 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
86
87
88 static struct usb_device_id id_table [] = {
89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
93         { }                     /* Terminating entry */
94 };
95
96
97 MODULE_DEVICE_TABLE (usb, id_table);
98
99 static struct usb_driver kobil_driver = {
100         .name =         "kobil",
101         .probe =        usb_serial_probe,
102         .disconnect =   usb_serial_disconnect,
103         .id_table =     id_table,
104         .no_dynamic_id =        1,
105 };
106
107
108 static struct usb_serial_driver kobil_device = {
109         .driver = {
110                 .owner =        THIS_MODULE,
111                 .name =         "kobil",
112         },
113         .description =          "KOBIL USB smart card terminal",
114         .id_table =             id_table,
115         .num_interrupt_in =     NUM_DONT_CARE,
116         .num_bulk_in =          0,
117         .num_bulk_out =         0,
118         .num_ports =            1,
119         .attach =               kobil_startup,
120         .shutdown =             kobil_shutdown,
121         .ioctl =                kobil_ioctl,
122         .tiocmget =             kobil_tiocmget,
123         .tiocmset =             kobil_tiocmset,
124         .open =                 kobil_open,
125         .close =                kobil_close,
126         .write =                kobil_write,
127         .write_room =           kobil_write_room,
128         .read_int_callback =    kobil_read_int_callback,
129 };
130
131
132 struct kobil_private {
133         int write_int_endpoint_address;
134         int read_int_endpoint_address;
135         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
136         int filled;  // index of the last char in buf
137         int cur_pos; // index of the next char to send in buf
138         __u16 device_type;
139         int line_state;
140         struct termios internal_termios;
141 };
142
143
144 static int kobil_startup (struct usb_serial *serial)
145 {
146         int i;
147         struct kobil_private *priv;
148         struct usb_device *pdev;
149         struct usb_host_config *actconfig;
150         struct usb_interface *interface;
151         struct usb_host_interface *altsetting;
152         struct usb_host_endpoint *endpoint;
153
154         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
155         if (!priv){
156                 return -ENOMEM;
157         }
158
159         priv->filled = 0;
160         priv->cur_pos = 0;
161         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
162         priv->line_state = 0;
163
164         switch (priv->device_type){
165         case KOBIL_ADAPTER_B_PRODUCT_ID:
166                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
167                 break;
168         case KOBIL_ADAPTER_K_PRODUCT_ID:
169                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
170                 break;
171         case KOBIL_USBTWIN_PRODUCT_ID:
172                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
173                 break;
174         case KOBIL_KAAN_SIM_PRODUCT_ID:
175                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
176                 break;
177         }
178         usb_set_serial_port_data(serial->port[0], priv);
179
180         // search for the necessary endpoints
181         pdev = serial->dev;
182         actconfig = pdev->actconfig;
183         interface = actconfig->interface[0];
184         altsetting = interface->cur_altsetting;
185         endpoint = altsetting->endpoint;
186   
187         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
188                 endpoint = &altsetting->endpoint[i];
189                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && 
190                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
191                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
192                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
193                 }
194                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && 
195                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
196                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
197                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
198                 }
199         }
200         return 0;
201 }
202
203
204 static void kobil_shutdown (struct usb_serial *serial)
205 {
206         int i;
207         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
208
209         for (i=0; i < serial->num_ports; ++i) {
210                 while (serial->port[i]->open_count > 0) {
211                         kobil_close (serial->port[i], NULL);
212                 }
213                 kfree(usb_get_serial_port_data(serial->port[i]));
214                 usb_set_serial_port_data(serial->port[i], NULL);
215         }
216 }
217
218
219 static int kobil_open (struct usb_serial_port *port, struct file *filp)
220 {
221         int i, result = 0;
222         struct kobil_private *priv;
223         unsigned char *transfer_buffer;
224         int transfer_buffer_length = 8;
225         int write_urb_transfer_buffer_length = 8;
226
227         dbg("%s - port %d", __FUNCTION__, port->number);
228         priv = usb_get_serial_port_data(port);
229         priv->line_state = 0;
230
231         // someone sets the dev to 0 if the close method has been called
232         port->interrupt_in_urb->dev = port->serial->dev;
233
234
235         /* force low_latency on so that our tty_push actually forces
236          * the data through, otherwise it is scheduled, and with high
237          * data rates (like with OHCI) data can get lost.
238          */
239         port->tty->low_latency = 1;
240
241         // without this, every push_tty_char is echoed :-(  
242         port->tty->termios->c_lflag = 0;
243         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
244         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
245         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
246         
247         // set up internal termios structure 
248         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
249         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
250         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
251         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
252
253         for (i=0; i<NCCS; i++) {
254                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
255         }
256         
257         // allocate memory for transfer buffer
258         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
259         if (! transfer_buffer) {
260                 return -ENOMEM;
261         }
262         
263         // allocate write_urb
264         if (!port->write_urb) { 
265                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
266                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);  
267                 if (!port->write_urb) {
268                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
269                         kfree(transfer_buffer);
270                         return -ENOMEM;
271                 }
272         }
273
274         // allocate memory for write_urb transfer buffer
275         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
276         if (! port->write_urb->transfer_buffer) {
277                 kfree(transfer_buffer);
278                 usb_free_urb(port->write_urb);
279                 port->write_urb = NULL;
280                 return -ENOMEM;
281         } 
282
283         // get hardware version
284         result = usb_control_msg( port->serial->dev, 
285                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
286                                   SUSBCRequest_GetMisc,
287                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
288                                   SUSBCR_MSC_GetHWVersion,
289                                   0,
290                                   transfer_buffer,
291                                   transfer_buffer_length,
292                                   KOBIL_TIMEOUT
293                 );
294         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
295         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
296         
297         // get firmware version
298         result = usb_control_msg( port->serial->dev, 
299                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
300                                   SUSBCRequest_GetMisc,
301                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
302                                   SUSBCR_MSC_GetFWVersion,
303                                   0,
304                                   transfer_buffer,
305                                   transfer_buffer_length,
306                                   KOBIL_TIMEOUT
307                 );
308         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
309         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
310
311         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
312                 // Setting Baudrate, Parity and Stopbits
313                 result = usb_control_msg( port->serial->dev, 
314                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
315                                           SUSBCRequest_SetBaudRateParityAndStopBits,
316                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
317                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
318                                           0,
319                                           transfer_buffer,
320                                           0,
321                                           KOBIL_TIMEOUT
322                         );
323                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
324                 
325                 // reset all queues
326                 result = usb_control_msg( port->serial->dev, 
327                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
328                                           SUSBCRequest_Misc,
329                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
330                                           SUSBCR_MSC_ResetAllQueues,
331                                           0,
332                                           transfer_buffer,
333                                           0,
334                                           KOBIL_TIMEOUT
335                         );
336                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
337         }
338         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
339             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
340                 // start reading (Adapter B 'cause PNP string)
341                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  ); 
342                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
343         }
344
345         kfree(transfer_buffer);
346         return 0;
347 }
348
349
350 static void kobil_close (struct usb_serial_port *port, struct file *filp)
351 {
352         dbg("%s - port %d", __FUNCTION__, port->number);
353
354         if (port->write_urb) {
355                 usb_kill_urb(port->write_urb);
356                 usb_free_urb( port->write_urb );
357                 port->write_urb = NULL;
358         }
359         if (port->interrupt_in_urb)
360                 usb_kill_urb(port->interrupt_in_urb);
361 }
362
363
364 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
365 {
366         int result;
367         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
368         struct tty_struct *tty;
369         unsigned char *data = purb->transfer_buffer;
370 //      char *dbg_data;
371
372         dbg("%s - port %d", __FUNCTION__, port->number);
373
374         if (purb->status) {
375                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
376                 return;
377         }
378         
379         tty = port->tty; 
380         if (purb->actual_length) {
381                 
382                 // BEGIN DEBUG
383                 /*
384                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
385                   if (! dbg_data) {
386                   return;
387                   }
388                   for (i = 0; i < purb->actual_length; i++) { 
389                   sprintf(dbg_data +3*i, "%02X ", data[i]); 
390                   }
391                   dbg(" <-- %s", dbg_data );
392                   kfree(dbg_data);
393                 */
394                 // END DEBUG
395
396                 tty_buffer_request_room(tty, purb->actual_length);
397                 tty_insert_flip_string(tty, data, purb->actual_length);
398                 tty_flip_buffer_push(tty);
399         }
400
401         // someone sets the dev to 0 if the close method has been called
402         port->interrupt_in_urb->dev = port->serial->dev;
403
404         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC ); 
405         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
406 }
407
408
409 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
410 {
411 }
412
413
414 static int kobil_write (struct usb_serial_port *port, 
415                         const unsigned char *buf, int count)
416 {
417         int length = 0;
418         int result = 0;
419         int todo = 0;
420         struct kobil_private * priv;
421
422         if (count == 0) {
423                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
424                 return 0;
425         }
426
427         priv = usb_get_serial_port_data(port);
428
429         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
430                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
431                 return -ENOMEM;
432         }
433
434         // Copy data to buffer
435         memcpy (priv->buf + priv->filled, buf, count);
436
437         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
438
439         priv->filled = priv->filled + count;
440
441
442         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
443         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) || 
444              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
445                 
446                 // stop reading (except TWIN and KAAN SIM)
447                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
448                         usb_kill_urb(port->interrupt_in_urb);
449
450                 todo = priv->filled - priv->cur_pos;
451
452                 while(todo > 0) {
453                         // max 8 byte in one urb (endpoint size)
454                         length = (todo < 8) ? todo : 8;
455                         // copy data to transfer buffer
456                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
457                         usb_fill_int_urb( port->write_urb,
458                                           port->serial->dev,
459                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
460                                           port->write_urb->transfer_buffer,
461                                           length,
462                                           kobil_write_callback,
463                                           port,
464                                           8
465                                 );
466
467                         priv->cur_pos = priv->cur_pos + length;
468                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
469                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
470                         todo = priv->filled - priv->cur_pos;
471
472                         if (todo > 0) {
473                                 msleep(24);
474                         }
475
476                 } // end while
477                 
478                 priv->filled = 0;
479                 priv->cur_pos = 0;
480
481                 // someone sets the dev to 0 if the close method has been called
482                 port->interrupt_in_urb->dev = port->serial->dev;
483                 
484                 // start reading (except TWIN and KAAN SIM)
485                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
486                         // someone sets the dev to 0 if the close method has been called
487                         port->interrupt_in_urb->dev = port->serial->dev;
488                         
489                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO ); 
490                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
491                 }
492         }
493         return count;
494 }
495
496
497 static int kobil_write_room (struct usb_serial_port *port)
498 {
499         //dbg("%s - port %d", __FUNCTION__, port->number);
500         return 8;
501 }
502
503
504 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
505 {
506         struct kobil_private * priv;
507         int result;
508         unsigned char *transfer_buffer;
509         int transfer_buffer_length = 8;
510
511         priv = usb_get_serial_port_data(port);
512         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
513                 // This device doesn't support ioctl calls
514                 return -EINVAL;
515         }
516
517         // allocate memory for transfer buffer
518         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
519         if (!transfer_buffer) {
520                 return -ENOMEM;
521         }
522
523         result = usb_control_msg( port->serial->dev, 
524                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
525                                   SUSBCRequest_GetStatusLineState,
526                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
527                                   0,
528                                   0,
529                                   transfer_buffer,
530                                   transfer_buffer_length,
531                                   KOBIL_TIMEOUT);
532
533         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x", 
534             __FUNCTION__, port->number, result, transfer_buffer[0]);
535
536         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
537                 priv->line_state |= TIOCM_DSR;
538         } else {
539                 priv->line_state &= ~TIOCM_DSR; 
540         }
541
542         kfree(transfer_buffer);
543         return priv->line_state;
544 }
545
546 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
547                            unsigned int set, unsigned int clear)
548 {
549         struct kobil_private * priv;
550         int result;
551         int dtr = 0;
552         int rts = 0;
553         unsigned char *transfer_buffer;
554         int transfer_buffer_length = 8;
555
556         priv = usb_get_serial_port_data(port);
557         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
558                 // This device doesn't support ioctl calls
559                 return -EINVAL;
560         }
561
562         // allocate memory for transfer buffer
563         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
564         if (! transfer_buffer) {
565                 return -ENOMEM;
566         }
567
568         if (set & TIOCM_RTS)
569                 rts = 1;
570         if (set & TIOCM_DTR)
571                 dtr = 1;
572         if (clear & TIOCM_RTS)
573                 rts = 0;
574         if (clear & TIOCM_DTR)
575                 dtr = 0;
576
577         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
578                 if (dtr != 0)
579                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
580                 else
581                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
582                 result = usb_control_msg( port->serial->dev, 
583                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
584                                           SUSBCRequest_SetStatusLinesOrQueues,
585                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
586                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
587                                           0,
588                                           transfer_buffer,
589                                           0,
590                                           KOBIL_TIMEOUT);
591         } else {
592                 if (rts != 0)
593                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
594                 else
595                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
596                 result = usb_control_msg( port->serial->dev, 
597                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
598                                           SUSBCRequest_SetStatusLinesOrQueues,
599                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
600                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
601                                           0,
602                                           transfer_buffer,
603                                           0,
604                                           KOBIL_TIMEOUT);
605         }
606         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
607         kfree(transfer_buffer);
608         return (result < 0) ? result : 0;
609 }
610
611
612 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
613                         unsigned int cmd, unsigned long arg)
614 {
615         struct kobil_private * priv;
616         int result;
617         unsigned short urb_val = 0;
618         unsigned char *transfer_buffer;
619         int transfer_buffer_length = 8;
620         char *settings;
621         void __user *user_arg = (void __user *)arg;
622
623         priv = usb_get_serial_port_data(port);
624         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
625                 // This device doesn't support ioctl calls
626                 return 0;
627         }
628
629         switch (cmd) {
630         case TCGETS:   // 0x5401
631                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
632                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
633                         return -EFAULT;
634                 }
635                 if (kernel_termios_to_user_termios((struct termios __user *)arg,
636                                                    &priv->internal_termios))
637                         return -EFAULT;
638                 return 0;
639
640         case TCSETS:   // 0x5402
641                 if (!(port->tty->termios)) {
642                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
643                         return -ENOTTY;
644                 }
645                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
646                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
647                         return -EFAULT;
648                 }
649                 if (user_termios_to_kernel_termios(&priv->internal_termios,
650                                                    (struct termios __user *)arg))
651                         return -EFAULT;
652                 
653                 settings = kzalloc(50, GFP_KERNEL);
654                 if (! settings) {
655                         return -ENOBUFS;
656                 }
657
658                 switch (priv->internal_termios.c_cflag & CBAUD) {
659                 case B1200:
660                         urb_val = SUSBCR_SBR_1200;
661                         strcat(settings, "1200 ");
662                         break;
663                 case B9600:
664                 default:
665                         urb_val = SUSBCR_SBR_9600;
666                         strcat(settings, "9600 ");
667                         break;
668                 }
669
670                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
671                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
672
673                 if (priv->internal_termios.c_cflag & PARENB) {
674                         if  (priv->internal_termios.c_cflag & PARODD) {
675                                 urb_val |= SUSBCR_SPASB_OddParity;
676                                 strcat(settings, "Odd Parity");
677                         } else {
678                                 urb_val |= SUSBCR_SPASB_EvenParity;
679                                 strcat(settings, "Even Parity");
680                         }
681                 } else {
682                         urb_val |= SUSBCR_SPASB_NoParity;
683                         strcat(settings, "No Parity");
684                 }
685                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
686
687                 result = usb_control_msg( port->serial->dev, 
688                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
689                                           SUSBCRequest_SetBaudRateParityAndStopBits,
690                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
691                                           urb_val,
692                                           0,
693                                           settings,
694                                           0,
695                                           KOBIL_TIMEOUT
696                         );
697
698                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
699                 kfree(settings);
700                 return 0;
701
702         case TCFLSH:   // 0x540B
703                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
704                 if (! transfer_buffer) {
705                         return -ENOBUFS;
706                 }
707
708                 result = usb_control_msg( port->serial->dev, 
709                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
710                                           SUSBCRequest_Misc,
711                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
712                                           SUSBCR_MSC_ResetAllQueues,
713                                           0,
714                                           NULL,//transfer_buffer,
715                                           0,
716                                           KOBIL_TIMEOUT
717                         );
718                 
719                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
720
721                 kfree(transfer_buffer);
722                 return ((result < 0) ? -EFAULT : 0);
723
724         }
725         return -ENOIOCTLCMD;
726 }
727
728
729 static int __init kobil_init (void)
730 {
731         int retval;
732         retval = usb_serial_register(&kobil_device);
733         if (retval)
734                 goto failed_usb_serial_register;
735         retval = usb_register(&kobil_driver);
736         if (retval) 
737                 goto failed_usb_register;
738
739         info(DRIVER_VERSION " " DRIVER_AUTHOR);
740         info(DRIVER_DESC);
741
742         return 0;
743 failed_usb_register:
744         usb_serial_deregister(&kobil_device);
745 failed_usb_serial_register:
746         return retval;
747 }
748
749
750 static void __exit kobil_exit (void)
751 {
752         usb_deregister (&kobil_driver);
753         usb_serial_deregister (&kobil_device);
754 }
755
756 module_init(kobil_init);
757 module_exit(kobil_exit);
758
759 MODULE_AUTHOR( DRIVER_AUTHOR );
760 MODULE_DESCRIPTION( DRIVER_DESC );
761 MODULE_LICENSE( "GPL" );
762
763 module_param(debug, bool, S_IRUGO | S_IWUSR);
764 MODULE_PARM_DESC(debug, "Debug enabled or not");