[PATCH] USB: remove .owner field from struct usb_driver
[linux-2.6.git] / 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 = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
259         if (! transfer_buffer) {
260                 return -ENOMEM;
261         } else {
262                 memset(transfer_buffer, 0, transfer_buffer_length);
263         }
264         
265         // allocate write_urb
266         if (!port->write_urb) { 
267                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
268                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);  
269                 if (!port->write_urb) {
270                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
271                         kfree(transfer_buffer);
272                         return -ENOMEM;
273                 }
274         }
275
276         // allocate memory for write_urb transfer buffer
277         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
278         if (! port->write_urb->transfer_buffer) {
279                 kfree(transfer_buffer);
280                 usb_free_urb(port->write_urb);
281                 port->write_urb = NULL;
282                 return -ENOMEM;
283         } 
284
285         // get hardware version
286         result = usb_control_msg( port->serial->dev, 
287                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
288                                   SUSBCRequest_GetMisc,
289                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
290                                   SUSBCR_MSC_GetHWVersion,
291                                   0,
292                                   transfer_buffer,
293                                   transfer_buffer_length,
294                                   KOBIL_TIMEOUT
295                 );
296         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
297         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
298         
299         // get firmware version
300         result = usb_control_msg( port->serial->dev, 
301                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
302                                   SUSBCRequest_GetMisc,
303                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
304                                   SUSBCR_MSC_GetFWVersion,
305                                   0,
306                                   transfer_buffer,
307                                   transfer_buffer_length,
308                                   KOBIL_TIMEOUT
309                 );
310         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
311         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
312
313         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
314                 // Setting Baudrate, Parity and Stopbits
315                 result = usb_control_msg( port->serial->dev, 
316                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
317                                           SUSBCRequest_SetBaudRateParityAndStopBits,
318                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
319                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
320                                           0,
321                                           transfer_buffer,
322                                           0,
323                                           KOBIL_TIMEOUT
324                         );
325                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
326                 
327                 // reset all queues
328                 result = usb_control_msg( port->serial->dev, 
329                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
330                                           SUSBCRequest_Misc,
331                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
332                                           SUSBCR_MSC_ResetAllQueues,
333                                           0,
334                                           transfer_buffer,
335                                           0,
336                                           KOBIL_TIMEOUT
337                         );
338                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
339         }
340         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
341             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
342                 // start reading (Adapter B 'cause PNP string)
343                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  ); 
344                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
345         }
346
347         kfree(transfer_buffer);
348         return 0;
349 }
350
351
352 static void kobil_close (struct usb_serial_port *port, struct file *filp)
353 {
354         dbg("%s - port %d", __FUNCTION__, port->number);
355
356         if (port->write_urb) {
357                 usb_kill_urb(port->write_urb);
358                 usb_free_urb( port->write_urb );
359                 port->write_urb = NULL;
360         }
361         if (port->interrupt_in_urb)
362                 usb_kill_urb(port->interrupt_in_urb);
363 }
364
365
366 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
367 {
368         int i;
369         int result;
370         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
371         struct tty_struct *tty;
372         unsigned char *data = purb->transfer_buffer;
373 //      char *dbg_data;
374
375         dbg("%s - port %d", __FUNCTION__, port->number);
376
377         if (purb->status) {
378                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
379                 return;
380         }
381         
382         tty = port->tty; 
383         if (purb->actual_length) {
384                 
385                 // BEGIN DEBUG
386                 /*
387                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
388                   if (! dbg_data) {
389                   return;
390                   }
391                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
392                   for (i = 0; i < purb->actual_length; i++) { 
393                   sprintf(dbg_data +3*i, "%02X ", data[i]); 
394                   }
395                   dbg(" <-- %s", dbg_data );
396                   kfree(dbg_data);
397                 */
398                 // END DEBUG
399
400                 for (i = 0; i < purb->actual_length; ++i) {
401                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
402                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
403                                 tty_flip_buffer_push(tty);
404                         }
405                         // this doesn't actually push the data through unless tty->low_latency is set
406                         tty_insert_flip_char(tty, data[i], 0);
407                 }
408                 tty_flip_buffer_push(tty);
409         }
410
411         // someone sets the dev to 0 if the close method has been called
412         port->interrupt_in_urb->dev = port->serial->dev;
413
414         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC ); 
415         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
416 }
417
418
419 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
420 {
421 }
422
423
424 static int kobil_write (struct usb_serial_port *port, 
425                         const unsigned char *buf, int count)
426 {
427         int length = 0;
428         int result = 0;
429         int todo = 0;
430         struct kobil_private * priv;
431
432         if (count == 0) {
433                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
434                 return 0;
435         }
436
437         priv = usb_get_serial_port_data(port);
438
439         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
440                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
441                 return -ENOMEM;
442         }
443
444         // Copy data to buffer
445         memcpy (priv->buf + priv->filled, buf, count);
446
447         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
448
449         priv->filled = priv->filled + count;
450
451
452         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
453         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) || 
454              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
455                 
456                 // stop reading (except TWIN and KAAN SIM)
457                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
458                         usb_kill_urb(port->interrupt_in_urb);
459
460                 todo = priv->filled - priv->cur_pos;
461
462                 while(todo > 0) {
463                         // max 8 byte in one urb (endpoint size)
464                         length = (todo < 8) ? todo : 8;
465                         // copy data to transfer buffer
466                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
467                         usb_fill_int_urb( port->write_urb,
468                                           port->serial->dev,
469                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
470                                           port->write_urb->transfer_buffer,
471                                           length,
472                                           kobil_write_callback,
473                                           port,
474                                           8
475                                 );
476
477                         priv->cur_pos = priv->cur_pos + length;
478                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
479                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
480                         todo = priv->filled - priv->cur_pos;
481
482                         if (todo > 0) {
483                                 msleep(24);
484                         }
485
486                 } // end while
487                 
488                 priv->filled = 0;
489                 priv->cur_pos = 0;
490
491                 // someone sets the dev to 0 if the close method has been called
492                 port->interrupt_in_urb->dev = port->serial->dev;
493                 
494                 // start reading (except TWIN and KAAN SIM)
495                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
496                         // someone sets the dev to 0 if the close method has been called
497                         port->interrupt_in_urb->dev = port->serial->dev;
498                         
499                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO ); 
500                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
501                 }
502         }
503         return count;
504 }
505
506
507 static int kobil_write_room (struct usb_serial_port *port)
508 {
509         //dbg("%s - port %d", __FUNCTION__, port->number);
510         return 8;
511 }
512
513
514 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
515 {
516         struct kobil_private * priv;
517         int result;
518         unsigned char *transfer_buffer;
519         int transfer_buffer_length = 8;
520
521         priv = usb_get_serial_port_data(port);
522         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
523                 // This device doesn't support ioctl calls
524                 return -EINVAL;
525         }
526
527         // allocate memory for transfer buffer
528         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
529         if (!transfer_buffer) {
530                 return -ENOMEM;
531         }
532         memset(transfer_buffer, 0, transfer_buffer_length);
533
534         result = usb_control_msg( port->serial->dev, 
535                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
536                                   SUSBCRequest_GetStatusLineState,
537                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
538                                   0,
539                                   0,
540                                   transfer_buffer,
541                                   transfer_buffer_length,
542                                   KOBIL_TIMEOUT);
543
544         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x", 
545             __FUNCTION__, port->number, result, transfer_buffer[0]);
546
547         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
548                 priv->line_state |= TIOCM_DSR;
549         } else {
550                 priv->line_state &= ~TIOCM_DSR; 
551         }
552
553         kfree(transfer_buffer);
554         return priv->line_state;
555 }
556
557 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
558                            unsigned int set, unsigned int clear)
559 {
560         struct kobil_private * priv;
561         int result;
562         int dtr = 0;
563         int rts = 0;
564         unsigned char *transfer_buffer;
565         int transfer_buffer_length = 8;
566
567         priv = usb_get_serial_port_data(port);
568         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
569                 // This device doesn't support ioctl calls
570                 return -EINVAL;
571         }
572
573         // allocate memory for transfer buffer
574         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
575         if (! transfer_buffer) {
576                 return -ENOMEM;
577         }
578         memset(transfer_buffer, 0, transfer_buffer_length);
579
580         if (set & TIOCM_RTS)
581                 rts = 1;
582         if (set & TIOCM_DTR)
583                 dtr = 1;
584         if (clear & TIOCM_RTS)
585                 rts = 0;
586         if (clear & TIOCM_DTR)
587                 dtr = 0;
588
589         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
590                 if (dtr != 0)
591                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
592                 else
593                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
594                 result = usb_control_msg( port->serial->dev, 
595                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
596                                           SUSBCRequest_SetStatusLinesOrQueues,
597                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
598                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
599                                           0,
600                                           transfer_buffer,
601                                           0,
602                                           KOBIL_TIMEOUT);
603         } else {
604                 if (rts != 0)
605                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
606                 else
607                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
608                 result = usb_control_msg( port->serial->dev, 
609                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
610                                           SUSBCRequest_SetStatusLinesOrQueues,
611                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
612                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
613                                           0,
614                                           transfer_buffer,
615                                           0,
616                                           KOBIL_TIMEOUT);
617         }
618         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
619         kfree(transfer_buffer);
620         return (result < 0) ? result : 0;
621 }
622
623
624 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
625                         unsigned int cmd, unsigned long arg)
626 {
627         struct kobil_private * priv;
628         int result;
629         unsigned short urb_val = 0;
630         unsigned char *transfer_buffer;
631         int transfer_buffer_length = 8;
632         char *settings;
633         void __user *user_arg = (void __user *)arg;
634
635         priv = usb_get_serial_port_data(port);
636         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
637                 // This device doesn't support ioctl calls
638                 return 0;
639         }
640
641         switch (cmd) {
642         case TCGETS:   // 0x5401
643                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
644                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
645                         return -EFAULT;
646                 }
647                 if (kernel_termios_to_user_termios((struct termios __user *)arg,
648                                                    &priv->internal_termios))
649                         return -EFAULT;
650                 return 0;
651
652         case TCSETS:   // 0x5402
653                 if (!(port->tty->termios)) {
654                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
655                         return -ENOTTY;
656                 }
657                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
658                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
659                         return -EFAULT;
660                 }
661                 if (user_termios_to_kernel_termios(&priv->internal_termios,
662                                                    (struct termios __user *)arg))
663                         return -EFAULT;
664                 
665                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);  
666                 if (! settings) {
667                         return -ENOBUFS;
668                 }
669                 memset(settings, 0, 50);
670
671                 switch (priv->internal_termios.c_cflag & CBAUD) {
672                 case B1200:
673                         urb_val = SUSBCR_SBR_1200;
674                         strcat(settings, "1200 ");
675                         break;
676                 case B9600:
677                 default:
678                         urb_val = SUSBCR_SBR_9600;
679                         strcat(settings, "9600 ");
680                         break;
681                 }
682
683                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
684                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
685
686                 if (priv->internal_termios.c_cflag & PARENB) {
687                         if  (priv->internal_termios.c_cflag & PARODD) {
688                                 urb_val |= SUSBCR_SPASB_OddParity;
689                                 strcat(settings, "Odd Parity");
690                         } else {
691                                 urb_val |= SUSBCR_SPASB_EvenParity;
692                                 strcat(settings, "Even Parity");
693                         }
694                 } else {
695                         urb_val |= SUSBCR_SPASB_NoParity;
696                         strcat(settings, "No Parity");
697                 }
698                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
699
700                 result = usb_control_msg( port->serial->dev, 
701                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
702                                           SUSBCRequest_SetBaudRateParityAndStopBits,
703                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
704                                           urb_val,
705                                           0,
706                                           settings,
707                                           0,
708                                           KOBIL_TIMEOUT
709                         );
710
711                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
712                 kfree(settings);
713                 return 0;
714
715         case TCFLSH:   // 0x540B
716                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
717                 if (! transfer_buffer) {
718                         return -ENOBUFS;
719                 }
720
721                 result = usb_control_msg( port->serial->dev, 
722                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
723                                           SUSBCRequest_Misc,
724                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
725                                           SUSBCR_MSC_ResetAllQueues,
726                                           0,
727                                           NULL,//transfer_buffer,
728                                           0,
729                                           KOBIL_TIMEOUT
730                         );
731                 
732                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
733
734                 kfree(transfer_buffer);
735                 return ((result < 0) ? -EFAULT : 0);
736
737         }
738         return -ENOIOCTLCMD;
739 }
740
741
742 static int __init kobil_init (void)
743 {
744         int retval;
745         retval = usb_serial_register(&kobil_device);
746         if (retval)
747                 goto failed_usb_serial_register;
748         retval = usb_register(&kobil_driver);
749         if (retval) 
750                 goto failed_usb_register;
751
752         info(DRIVER_VERSION " " DRIVER_AUTHOR);
753         info(DRIVER_DESC);
754
755         return 0;
756 failed_usb_register:
757         usb_serial_deregister(&kobil_device);
758 failed_usb_serial_register:
759         return retval;
760 }
761
762
763 static void __exit kobil_exit (void)
764 {
765         usb_deregister (&kobil_driver);
766         usb_serial_deregister (&kobil_device);
767 }
768
769 module_init(kobil_init);
770 module_exit(kobil_exit);
771
772 MODULE_AUTHOR( DRIVER_AUTHOR );
773 MODULE_DESCRIPTION( DRIVER_DESC );
774 MODULE_LICENSE( "GPL" );
775
776 module_param(debug, bool, S_IRUGO | S_IWUSR);
777 MODULE_PARM_DESC(debug, "Debug enabled or not");