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