Automatic merge of /spare/repo/libata-dev branch ahci-msi
[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         .owner =        THIS_MODULE,
101         .name =         "kobil",
102         .probe =        usb_serial_probe,
103         .disconnect =   usb_serial_disconnect,
104         .id_table =     id_table,
105 };
106
107
108 static struct usb_serial_device_type kobil_device = {
109         .owner =                THIS_MODULE,
110         .name =                 "KOBIL USB smart card terminal",
111         .id_table =             id_table,
112         .num_interrupt_in =     NUM_DONT_CARE,
113         .num_bulk_in =          0,
114         .num_bulk_out =         0,
115         .num_ports =            1,
116         .attach =               kobil_startup,
117         .shutdown =             kobil_shutdown,
118         .ioctl =                kobil_ioctl,
119         .tiocmget =             kobil_tiocmget,
120         .tiocmset =             kobil_tiocmset,
121         .open =                 kobil_open,
122         .close =                kobil_close,
123         .write =                kobil_write,
124         .write_room =           kobil_write_room,
125         .read_int_callback =    kobil_read_int_callback,
126 };
127
128
129 struct kobil_private {
130         int write_int_endpoint_address;
131         int read_int_endpoint_address;
132         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
133         int filled;  // index of the last char in buf
134         int cur_pos; // index of the next char to send in buf
135         __u16 device_type;
136         int line_state;
137         struct termios internal_termios;
138 };
139
140
141 static int kobil_startup (struct usb_serial *serial)
142 {
143         int i;
144         struct kobil_private *priv;
145         struct usb_device *pdev;
146         struct usb_host_config *actconfig;
147         struct usb_interface *interface;
148         struct usb_host_interface *altsetting;
149         struct usb_host_endpoint *endpoint;
150
151         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
152         if (!priv){
153                 return -ENOMEM;
154         }
155
156         priv->filled = 0;
157         priv->cur_pos = 0;
158         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
159         priv->line_state = 0;
160
161         switch (priv->device_type){
162         case KOBIL_ADAPTER_B_PRODUCT_ID:
163                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
164                 break;
165         case KOBIL_ADAPTER_K_PRODUCT_ID:
166                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
167                 break;
168         case KOBIL_USBTWIN_PRODUCT_ID:
169                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
170                 break;
171         case KOBIL_KAAN_SIM_PRODUCT_ID:
172                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
173                 break;
174         }
175         usb_set_serial_port_data(serial->port[0], priv);
176
177         // search for the necessary endpoints
178         pdev = serial->dev;
179         actconfig = pdev->actconfig;
180         interface = actconfig->interface[0];
181         altsetting = interface->cur_altsetting;
182         endpoint = altsetting->endpoint;
183   
184         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
185                 endpoint = &altsetting->endpoint[i];
186                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && 
187                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
188                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
189                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
190                 }
191                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && 
192                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
193                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
194                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
195                 }
196         }
197         return 0;
198 }
199
200
201 static void kobil_shutdown (struct usb_serial *serial)
202 {
203         int i;
204         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
205
206         for (i=0; i < serial->num_ports; ++i) {
207                 while (serial->port[i]->open_count > 0) {
208                         kobil_close (serial->port[i], NULL);
209                 }
210                 kfree(usb_get_serial_port_data(serial->port[i]));
211                 usb_set_serial_port_data(serial->port[i], NULL);
212         }
213 }
214
215
216 static int kobil_open (struct usb_serial_port *port, struct file *filp)
217 {
218         int i, result = 0;
219         struct kobil_private *priv;
220         unsigned char *transfer_buffer;
221         int transfer_buffer_length = 8;
222         int write_urb_transfer_buffer_length = 8;
223
224         dbg("%s - port %d", __FUNCTION__, port->number);
225         priv = usb_get_serial_port_data(port);
226         priv->line_state = 0;
227
228         // someone sets the dev to 0 if the close method has been called
229         port->interrupt_in_urb->dev = port->serial->dev;
230
231
232         /* force low_latency on so that our tty_push actually forces
233          * the data through, otherwise it is scheduled, and with high
234          * data rates (like with OHCI) data can get lost.
235          */
236         port->tty->low_latency = 1;
237
238         // without this, every push_tty_char is echoed :-(  
239         port->tty->termios->c_lflag = 0;
240         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
241         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
242         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
243         
244         // set up internal termios structure 
245         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
246         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
247         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
248         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
249
250         for (i=0; i<NCCS; i++) {
251                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
252         }
253         
254         // allocate memory for transfer buffer
255         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
256         if (! transfer_buffer) {
257                 return -ENOMEM;
258         } else {
259                 memset(transfer_buffer, 0, transfer_buffer_length);
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 i;
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 = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
385                   if (! dbg_data) {
386                   return;
387                   }
388                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
389                   for (i = 0; i < purb->actual_length; i++) { 
390                   sprintf(dbg_data +3*i, "%02X ", data[i]); 
391                   }
392                   dbg(" <-- %s", dbg_data );
393                   kfree(dbg_data);
394                 */
395                 // END DEBUG
396
397                 for (i = 0; i < purb->actual_length; ++i) {
398                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
399                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
400                                 tty_flip_buffer_push(tty);
401                         }
402                         // this doesn't actually push the data through unless tty->low_latency is set
403                         tty_insert_flip_char(tty, data[i], 0);
404                 }
405                 tty_flip_buffer_push(tty);
406         }
407
408         // someone sets the dev to 0 if the close method has been called
409         port->interrupt_in_urb->dev = port->serial->dev;
410
411         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC ); 
412         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
413 }
414
415
416 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
417 {
418 }
419
420
421 static int kobil_write (struct usb_serial_port *port, 
422                         const unsigned char *buf, int count)
423 {
424         int length = 0;
425         int result = 0;
426         int todo = 0;
427         struct kobil_private * priv;
428
429         if (count == 0) {
430                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
431                 return 0;
432         }
433
434         priv = usb_get_serial_port_data(port);
435
436         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
437                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
438                 return -ENOMEM;
439         }
440
441         // Copy data to buffer
442         memcpy (priv->buf + priv->filled, buf, count);
443
444         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
445
446         priv->filled = priv->filled + count;
447
448
449         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
450         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) || 
451              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
452                 
453                 // stop reading (except TWIN and KAAN SIM)
454                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
455                         usb_kill_urb(port->interrupt_in_urb);
456
457                 todo = priv->filled - priv->cur_pos;
458
459                 while(todo > 0) {
460                         // max 8 byte in one urb (endpoint size)
461                         length = (todo < 8) ? todo : 8;
462                         // copy data to transfer buffer
463                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
464                         usb_fill_int_urb( port->write_urb,
465                                           port->serial->dev,
466                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
467                                           port->write_urb->transfer_buffer,
468                                           length,
469                                           kobil_write_callback,
470                                           port,
471                                           8
472                                 );
473
474                         priv->cur_pos = priv->cur_pos + length;
475                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
476                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
477                         todo = priv->filled - priv->cur_pos;
478
479                         if (todo > 0) {
480                                 msleep(24);
481                         }
482
483                 } // end while
484                 
485                 priv->filled = 0;
486                 priv->cur_pos = 0;
487
488                 // someone sets the dev to 0 if the close method has been called
489                 port->interrupt_in_urb->dev = port->serial->dev;
490                 
491                 // start reading (except TWIN and KAAN SIM)
492                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
493                         // someone sets the dev to 0 if the close method has been called
494                         port->interrupt_in_urb->dev = port->serial->dev;
495                         
496                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO ); 
497                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
498                 }
499         }
500         return count;
501 }
502
503
504 static int kobil_write_room (struct usb_serial_port *port)
505 {
506         //dbg("%s - port %d", __FUNCTION__, port->number);
507         return 8;
508 }
509
510
511 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
512 {
513         struct kobil_private * priv;
514         int result;
515         unsigned char *transfer_buffer;
516         int transfer_buffer_length = 8;
517
518         priv = usb_get_serial_port_data(port);
519         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
520                 // This device doesn't support ioctl calls
521                 return -EINVAL;
522         }
523
524         // allocate memory for transfer buffer
525         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
526         if (!transfer_buffer) {
527                 return -ENOMEM;
528         }
529         memset(transfer_buffer, 0, transfer_buffer_length);
530
531         result = usb_control_msg( port->serial->dev, 
532                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
533                                   SUSBCRequest_GetStatusLineState,
534                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
535                                   0,
536                                   0,
537                                   transfer_buffer,
538                                   transfer_buffer_length,
539                                   KOBIL_TIMEOUT);
540
541         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x", 
542             __FUNCTION__, port->number, result, transfer_buffer[0]);
543
544         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
545                 priv->line_state |= TIOCM_DSR;
546         } else {
547                 priv->line_state &= ~TIOCM_DSR; 
548         }
549
550         kfree(transfer_buffer);
551         return priv->line_state;
552 }
553
554 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
555                            unsigned int set, unsigned int clear)
556 {
557         struct kobil_private * priv;
558         int result;
559         int dtr = 0;
560         int rts = 0;
561         unsigned char *transfer_buffer;
562         int transfer_buffer_length = 8;
563
564         priv = usb_get_serial_port_data(port);
565         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
566                 // This device doesn't support ioctl calls
567                 return -EINVAL;
568         }
569
570         // allocate memory for transfer buffer
571         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
572         if (! transfer_buffer) {
573                 return -ENOMEM;
574         }
575         memset(transfer_buffer, 0, transfer_buffer_length);
576
577         if (set & TIOCM_RTS)
578                 rts = 1;
579         if (set & TIOCM_DTR)
580                 dtr = 1;
581         if (clear & TIOCM_RTS)
582                 rts = 0;
583         if (clear & TIOCM_DTR)
584                 dtr = 0;
585
586         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
587                 if (dtr != 0)
588                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
589                 else
590                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
591                 result = usb_control_msg( port->serial->dev, 
592                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
593                                           SUSBCRequest_SetStatusLinesOrQueues,
594                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
595                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
596                                           0,
597                                           transfer_buffer,
598                                           0,
599                                           KOBIL_TIMEOUT);
600         } else {
601                 if (rts != 0)
602                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
603                 else
604                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
605                 result = usb_control_msg( port->serial->dev, 
606                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
607                                           SUSBCRequest_SetStatusLinesOrQueues,
608                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
609                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
610                                           0,
611                                           transfer_buffer,
612                                           0,
613                                           KOBIL_TIMEOUT);
614         }
615         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
616         kfree(transfer_buffer);
617         return (result < 0) ? result : 0;
618 }
619
620
621 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
622                         unsigned int cmd, unsigned long arg)
623 {
624         struct kobil_private * priv;
625         int result;
626         unsigned short urb_val = 0;
627         unsigned char *transfer_buffer;
628         int transfer_buffer_length = 8;
629         char *settings;
630         void __user *user_arg = (void __user *)arg;
631
632         priv = usb_get_serial_port_data(port);
633         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
634                 // This device doesn't support ioctl calls
635                 return 0;
636         }
637
638         switch (cmd) {
639         case TCGETS:   // 0x5401
640                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
641                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
642                         return -EFAULT;
643                 }
644                 if (kernel_termios_to_user_termios((struct termios __user *)arg,
645                                                    &priv->internal_termios))
646                         return -EFAULT;
647                 return 0;
648
649         case TCSETS:   // 0x5402
650                 if (!(port->tty->termios)) {
651                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
652                         return -ENOTTY;
653                 }
654                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
655                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
656                         return -EFAULT;
657                 }
658                 if (user_termios_to_kernel_termios(&priv->internal_termios,
659                                                    (struct termios __user *)arg))
660                         return -EFAULT;
661                 
662                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);  
663                 if (! settings) {
664                         return -ENOBUFS;
665                 }
666                 memset(settings, 0, 50);
667
668                 switch (priv->internal_termios.c_cflag & CBAUD) {
669                 case B1200:
670                         urb_val = SUSBCR_SBR_1200;
671                         strcat(settings, "1200 ");
672                         break;
673                 case B9600:
674                 default:
675                         urb_val = SUSBCR_SBR_9600;
676                         strcat(settings, "9600 ");
677                         break;
678                 }
679
680                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
681                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
682
683                 if (priv->internal_termios.c_cflag & PARENB) {
684                         if  (priv->internal_termios.c_cflag & PARODD) {
685                                 urb_val |= SUSBCR_SPASB_OddParity;
686                                 strcat(settings, "Odd Parity");
687                         } else {
688                                 urb_val |= SUSBCR_SPASB_EvenParity;
689                                 strcat(settings, "Even Parity");
690                         }
691                 } else {
692                         urb_val |= SUSBCR_SPASB_NoParity;
693                         strcat(settings, "No Parity");
694                 }
695                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
696
697                 result = usb_control_msg( port->serial->dev, 
698                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
699                                           SUSBCRequest_SetBaudRateParityAndStopBits,
700                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
701                                           urb_val,
702                                           0,
703                                           settings,
704                                           0,
705                                           KOBIL_TIMEOUT
706                         );
707
708                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
709                 kfree(settings);
710                 return 0;
711
712         case TCFLSH:   // 0x540B
713                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
714                 if (! transfer_buffer) {
715                         return -ENOBUFS;
716                 }
717
718                 result = usb_control_msg( port->serial->dev, 
719                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
720                                           SUSBCRequest_Misc,
721                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
722                                           SUSBCR_MSC_ResetAllQueues,
723                                           0,
724                                           NULL,//transfer_buffer,
725                                           0,
726                                           KOBIL_TIMEOUT
727                         );
728                 
729                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
730
731                 kfree(transfer_buffer);
732                 return ((result < 0) ? -EFAULT : 0);
733
734         }
735         return -ENOIOCTLCMD;
736 }
737
738
739 static int __init kobil_init (void)
740 {
741         int retval;
742         retval = usb_serial_register(&kobil_device);
743         if (retval)
744                 goto failed_usb_serial_register;
745         retval = usb_register(&kobil_driver);
746         if (retval) 
747                 goto failed_usb_register;
748
749         info(DRIVER_VERSION " " DRIVER_AUTHOR);
750         info(DRIVER_DESC);
751
752         return 0;
753 failed_usb_register:
754         usb_serial_deregister(&kobil_device);
755 failed_usb_serial_register:
756         return retval;
757 }
758
759
760 static void __exit kobil_exit (void)
761 {
762         usb_deregister (&kobil_driver);
763         usb_serial_deregister (&kobil_device);
764 }
765
766 module_init(kobil_init);
767 module_exit(kobil_exit);
768
769 MODULE_AUTHOR( DRIVER_AUTHOR );
770 MODULE_DESCRIPTION( DRIVER_DESC );
771 MODULE_LICENSE( "GPL" );
772
773 module_param(debug, bool, S_IRUGO | S_IWUSR);
774 MODULE_PARM_DESC(debug, "Debug enabled or not");