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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 <linux/uaccess.h>
48#include <linux/usb.h>
49#include <linux/usb/serial.h>
50#include <linux/ioctl.h>
51#include "kobil_sct.h"
52
53static 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 */
71static int kobil_startup(struct usb_serial *serial);
72static void kobil_release(struct usb_serial *serial);
73static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
74static void kobil_close(struct usb_serial_port *port);
75static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
76 const unsigned char *buf, int count);
77static int kobil_write_room(struct tty_struct *tty);
78static int kobil_ioctl(struct tty_struct *tty,
79 unsigned int cmd, unsigned long arg);
80static int kobil_tiocmget(struct tty_struct *tty);
81static int kobil_tiocmset(struct tty_struct *tty,
82 unsigned int set, unsigned int clear);
83static void kobil_read_int_callback(struct urb *urb);
84static void kobil_write_callback(struct urb *purb);
85static void kobil_set_termios(struct tty_struct *tty,
86 struct usb_serial_port *port, struct ktermios *old);
87static void kobil_init_termios(struct tty_struct *tty);
88
89static const struct usb_device_id id_table[] = {
90 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
91 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
92 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
93 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
94 { } /* Terminating entry */
95};
96
97
98MODULE_DEVICE_TABLE(usb, id_table);
99
100static struct usb_driver kobil_driver = {
101 .name = "kobil",
102 .probe = usb_serial_probe,
103 .disconnect = usb_serial_disconnect,
104 .id_table = id_table,
105 .no_dynamic_id = 1,
106};
107
108
109static struct usb_serial_driver kobil_device = {
110 .driver = {
111 .owner = THIS_MODULE,
112 .name = "kobil",
113 },
114 .description = "KOBIL USB smart card terminal",
115 .usb_driver = &kobil_driver,
116 .id_table = id_table,
117 .num_ports = 1,
118 .attach = kobil_startup,
119 .release = kobil_release,
120 .ioctl = kobil_ioctl,
121 .set_termios = kobil_set_termios,
122 .init_termios = kobil_init_termios,
123 .tiocmget = kobil_tiocmget,
124 .tiocmset = kobil_tiocmset,
125 .open = kobil_open,
126 .close = kobil_close,
127 .write = kobil_write,
128 .write_room = kobil_write_room,
129 .read_int_callback = kobil_read_int_callback,
130};
131
132
133struct kobil_private {
134 int write_int_endpoint_address;
135 int read_int_endpoint_address;
136 unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
137 int filled; /* index of the last char in buf */
138 int cur_pos; /* index of the next char to send in buf */
139 __u16 device_type;
140};
141
142
143static 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 priv->filled = 0;
158 priv->cur_pos = 0;
159 priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
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
167 "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
168 break;
169 case KOBIL_USBTWIN_PRODUCT_ID:
170 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
171 break;
172 case KOBIL_KAAN_SIM_PRODUCT_ID:
173 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
174 break;
175 }
176 usb_set_serial_port_data(serial->port[0], priv);
177
178 /* search for the necessary endpoints */
179 pdev = serial->dev;
180 actconfig = pdev->actconfig;
181 interface = actconfig->interface[0];
182 altsetting = interface->cur_altsetting;
183 endpoint = altsetting->endpoint;
184
185 for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
186 endpoint = &altsetting->endpoint[i];
187 if (usb_endpoint_is_int_out(&endpoint->desc)) {
188 dbg("%s Found interrupt out endpoint. Address: %d",
189 __func__, endpoint->desc.bEndpointAddress);
190 priv->write_int_endpoint_address =
191 endpoint->desc.bEndpointAddress;
192 }
193 if (usb_endpoint_is_int_in(&endpoint->desc)) {
194 dbg("%s Found interrupt in endpoint. Address: %d",
195 __func__, endpoint->desc.bEndpointAddress);
196 priv->read_int_endpoint_address =
197 endpoint->desc.bEndpointAddress;
198 }
199 }
200 return 0;
201}
202
203
204static void kobil_release(struct usb_serial *serial)
205{
206 int i;
207 dbg("%s - port %d", __func__, serial->port[0]->number);
208
209 for (i = 0; i < serial->num_ports; ++i)
210 kfree(usb_get_serial_port_data(serial->port[i]));
211}
212
213static void kobil_init_termios(struct tty_struct *tty)
214{
215 /* Default to echo off and other sane device settings */
216 tty->termios->c_lflag = 0;
217 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
218 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
219 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
220 tty->termios->c_oflag &= ~ONLCR;
221}
222
223static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
224{
225 int result = 0;
226 struct kobil_private *priv;
227 unsigned char *transfer_buffer;
228 int transfer_buffer_length = 8;
229 int write_urb_transfer_buffer_length = 8;
230
231 dbg("%s - port %d", __func__, port->number);
232 priv = usb_get_serial_port_data(port);
233
234 /* someone sets the dev to 0 if the close method has been called */
235 port->interrupt_in_urb->dev = port->serial->dev;
236
237 /* allocate memory for transfer buffer */
238 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
239 if (!transfer_buffer)
240 return -ENOMEM;
241
242 /* allocate write_urb */
243 if (!port->write_urb) {
244 dbg("%s - port %d Allocating port->write_urb",
245 __func__, port->number);
246 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
247 if (!port->write_urb) {
248 dbg("%s - port %d usb_alloc_urb failed",
249 __func__, port->number);
250 kfree(transfer_buffer);
251 return -ENOMEM;
252 }
253 }
254
255 /* allocate memory for write_urb transfer buffer */
256 port->write_urb->transfer_buffer =
257 kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
258 if (!port->write_urb->transfer_buffer) {
259 kfree(transfer_buffer);
260 usb_free_urb(port->write_urb);
261 port->write_urb = NULL;
262 return -ENOMEM;
263 }
264
265 /* get hardware version */
266 result = usb_control_msg(port->serial->dev,
267 usb_rcvctrlpipe(port->serial->dev, 0),
268 SUSBCRequest_GetMisc,
269 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
270 SUSBCR_MSC_GetHWVersion,
271 0,
272 transfer_buffer,
273 transfer_buffer_length,
274 KOBIL_TIMEOUT
275 );
276 dbg("%s - port %d Send get_HW_version URB returns: %i",
277 __func__, port->number, result);
278 dbg("Harware version: %i.%i.%i",
279 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
280
281 /* get firmware version */
282 result = usb_control_msg(port->serial->dev,
283 usb_rcvctrlpipe(port->serial->dev, 0),
284 SUSBCRequest_GetMisc,
285 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
286 SUSBCR_MSC_GetFWVersion,
287 0,
288 transfer_buffer,
289 transfer_buffer_length,
290 KOBIL_TIMEOUT
291 );
292 dbg("%s - port %d Send get_FW_version URB returns: %i",
293 __func__, port->number, result);
294 dbg("Firmware version: %i.%i.%i",
295 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
296
297 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
298 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
299 /* Setting Baudrate, Parity and Stopbits */
300 result = usb_control_msg(port->serial->dev,
301 usb_rcvctrlpipe(port->serial->dev, 0),
302 SUSBCRequest_SetBaudRateParityAndStopBits,
303 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
304 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
305 SUSBCR_SPASB_1StopBit,
306 0,
307 transfer_buffer,
308 0,
309 KOBIL_TIMEOUT
310 );
311 dbg("%s - port %d Send set_baudrate URB returns: %i",
312 __func__, port->number, result);
313
314 /* reset all queues */
315 result = usb_control_msg(port->serial->dev,
316 usb_rcvctrlpipe(port->serial->dev, 0),
317 SUSBCRequest_Misc,
318 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
319 SUSBCR_MSC_ResetAllQueues,
320 0,
321 transfer_buffer,
322 0,
323 KOBIL_TIMEOUT
324 );
325 dbg("%s - port %d Send reset_all_queues URB returns: %i",
326 __func__, port->number, result);
327 }
328 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
329 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
330 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
331 /* start reading (Adapter B 'cause PNP string) */
332 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
333 dbg("%s - port %d Send read URB returns: %i",
334 __func__, port->number, result);
335 }
336
337 kfree(transfer_buffer);
338 return 0;
339}
340
341
342static void kobil_close(struct usb_serial_port *port)
343{
344 dbg("%s - port %d", __func__, port->number);
345
346 /* FIXME: Add rts/dtr methods */
347 if (port->write_urb) {
348 usb_poison_urb(port->write_urb);
349 kfree(port->write_urb->transfer_buffer);
350 usb_free_urb(port->write_urb);
351 port->write_urb = NULL;
352 }
353 usb_kill_urb(port->interrupt_in_urb);
354}
355
356
357static void kobil_read_int_callback(struct urb *urb)
358{
359 int result;
360 struct usb_serial_port *port = urb->context;
361 struct tty_struct *tty;
362 unsigned char *data = urb->transfer_buffer;
363 int status = urb->status;
364/* char *dbg_data; */
365
366 dbg("%s - port %d", __func__, port->number);
367
368 if (status) {
369 dbg("%s - port %d Read int status not zero: %d",
370 __func__, port->number, status);
371 return;
372 }
373
374 tty = tty_port_tty_get(&port->port);
375 if (tty && urb->actual_length) {
376
377 /* BEGIN DEBUG */
378 /*
379 dbg_data = kzalloc((3 * purb->actual_length + 10)
380 * sizeof(char), GFP_KERNEL);
381 if (! dbg_data) {
382 return;
383 }
384 for (i = 0; i < purb->actual_length; i++) {
385 sprintf(dbg_data +3*i, "%02X ", data[i]);
386 }
387 dbg(" <-- %s", dbg_data);
388 kfree(dbg_data);
389 */
390 /* END DEBUG */
391
392 tty_insert_flip_string(tty, data, urb->actual_length);
393 tty_flip_buffer_push(tty);
394 }
395 tty_kref_put(tty);
396 /* someone sets the dev to 0 if the close method has been called */
397 port->interrupt_in_urb->dev = port->serial->dev;
398
399 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
400 dbg("%s - port %d Send read URB returns: %i",
401 __func__, port->number, result);
402}
403
404
405static void kobil_write_callback(struct urb *purb)
406{
407}
408
409
410static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
411 const unsigned char *buf, int count)
412{
413 int length = 0;
414 int result = 0;
415 int todo = 0;
416 struct kobil_private *priv;
417
418 if (count == 0) {
419 dbg("%s - port %d write request of 0 bytes",
420 __func__, port->number);
421 return 0;
422 }
423
424 priv = usb_get_serial_port_data(port);
425
426 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
427 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
428 return -ENOMEM;
429 }
430
431 /* Copy data to buffer */
432 memcpy(priv->buf + priv->filled, buf, count);
433 usb_serial_debug_data(debug, &port->dev, __func__, count,
434 priv->buf + priv->filled);
435 priv->filled = priv->filled + count;
436
437 /* only send complete block. TWIN, KAAN SIM and adapter K
438 use the same protocol. */
439 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
440 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
441 /* stop reading (except TWIN and KAAN SIM) */
442 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
443 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
444 usb_kill_urb(port->interrupt_in_urb);
445
446 todo = priv->filled - priv->cur_pos;
447
448 while (todo > 0) {
449 /* max 8 byte in one urb (endpoint size) */
450 length = (todo < 8) ? todo : 8;
451 /* copy data to transfer buffer */
452 memcpy(port->write_urb->transfer_buffer,
453 priv->buf + priv->cur_pos, length);
454 usb_fill_int_urb(port->write_urb,
455 port->serial->dev,
456 usb_sndintpipe(port->serial->dev,
457 priv->write_int_endpoint_address),
458 port->write_urb->transfer_buffer,
459 length,
460 kobil_write_callback,
461 port,
462 8
463 );
464
465 priv->cur_pos = priv->cur_pos + length;
466 result = usb_submit_urb(port->write_urb, GFP_NOIO);
467 dbg("%s - port %d Send write URB returns: %i",
468 __func__, port->number, result);
469 todo = priv->filled - priv->cur_pos;
470
471 if (todo > 0)
472 msleep(24);
473 }
474
475 priv->filled = 0;
476 priv->cur_pos = 0;
477
478 /* someone sets the dev to 0 if the close method
479 has been called */
480 port->interrupt_in_urb->dev = port->serial->dev;
481
482 /* start reading (except TWIN and KAAN SIM) */
483 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
484 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
485 /* someone sets the dev to 0 if the close method has
486 been called */
487 port->interrupt_in_urb->dev = port->serial->dev;
488
489 result = usb_submit_urb(port->interrupt_in_urb,
490 GFP_NOIO);
491 dbg("%s - port %d Send read URB returns: %i",
492 __func__, port->number, result);
493 }
494 }
495 return count;
496}
497
498
499static int kobil_write_room(struct tty_struct *tty)
500{
501 /* dbg("%s - port %d", __func__, port->number); */
502 /* FIXME */
503 return 8;
504}
505
506
507static int kobil_tiocmget(struct tty_struct *tty)
508{
509 struct usb_serial_port *port = tty->driver_data;
510 struct kobil_private *priv;
511 int result;
512 unsigned char *transfer_buffer;
513 int transfer_buffer_length = 8;
514
515 priv = usb_get_serial_port_data(port);
516 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
517 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
518 /* This device doesn't support ioctl calls */
519 return -EINVAL;
520 }
521
522 /* allocate memory for transfer buffer */
523 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
524 if (!transfer_buffer)
525 return -ENOMEM;
526
527 result = usb_control_msg(port->serial->dev,
528 usb_rcvctrlpipe(port->serial->dev, 0),
529 SUSBCRequest_GetStatusLineState,
530 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
531 0,
532 0,
533 transfer_buffer,
534 transfer_buffer_length,
535 KOBIL_TIMEOUT);
536
537 dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
538 __func__, port->number, result, transfer_buffer[0]);
539
540 result = 0;
541 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
542 result = TIOCM_DSR;
543 kfree(transfer_buffer);
544 return result;
545}
546
547static int kobil_tiocmset(struct tty_struct *tty,
548 unsigned int set, unsigned int clear)
549{
550 struct usb_serial_port *port = tty->driver_data;
551 struct kobil_private *priv;
552 int result;
553 int dtr = 0;
554 int rts = 0;
555 unsigned char *transfer_buffer;
556 int transfer_buffer_length = 8;
557
558 /* FIXME: locking ? */
559 priv = usb_get_serial_port_data(port);
560 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
561 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
562 /* This device doesn't support ioctl calls */
563 return -EINVAL;
564 }
565
566 /* allocate memory for transfer buffer */
567 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
568 if (!transfer_buffer)
569 return -ENOMEM;
570
571 if (set & TIOCM_RTS)
572 rts = 1;
573 if (set & TIOCM_DTR)
574 dtr = 1;
575 if (clear & TIOCM_RTS)
576 rts = 0;
577 if (clear & TIOCM_DTR)
578 dtr = 0;
579
580 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
581 if (dtr != 0)
582 dbg("%s - port %d Setting DTR",
583 __func__, port->number);
584 else
585 dbg("%s - port %d Clearing DTR",
586 __func__, port->number);
587 result = usb_control_msg(port->serial->dev,
588 usb_rcvctrlpipe(port->serial->dev, 0),
589 SUSBCRequest_SetStatusLinesOrQueues,
590 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
591 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
592 0,
593 transfer_buffer,
594 0,
595 KOBIL_TIMEOUT);
596 } else {
597 if (rts != 0)
598 dbg("%s - port %d Setting RTS",
599 __func__, port->number);
600 else
601 dbg("%s - port %d Clearing RTS",
602 __func__, port->number);
603 result = usb_control_msg(port->serial->dev,
604 usb_rcvctrlpipe(port->serial->dev, 0),
605 SUSBCRequest_SetStatusLinesOrQueues,
606 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
607 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
608 0,
609 transfer_buffer,
610 0,
611 KOBIL_TIMEOUT);
612 }
613 dbg("%s - port %d Send set_status_line URB returns: %i",
614 __func__, port->number, result);
615 kfree(transfer_buffer);
616 return (result < 0) ? result : 0;
617}
618
619static void kobil_set_termios(struct tty_struct *tty,
620 struct usb_serial_port *port, struct ktermios *old)
621{
622 struct kobil_private *priv;
623 int result;
624 unsigned short urb_val = 0;
625 int c_cflag = tty->termios->c_cflag;
626 speed_t speed;
627
628 priv = usb_get_serial_port_data(port);
629 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
630 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
631 /* This device doesn't support ioctl calls */
632 *tty->termios = *old;
633 return;
634 }
635
636 speed = tty_get_baud_rate(tty);
637 switch (speed) {
638 case 1200:
639 urb_val = SUSBCR_SBR_1200;
640 break;
641 default:
642 speed = 9600;
643 case 9600:
644 urb_val = SUSBCR_SBR_9600;
645 break;
646 }
647 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
648 SUSBCR_SPASB_1StopBit;
649 if (c_cflag & PARENB) {
650 if (c_cflag & PARODD)
651 urb_val |= SUSBCR_SPASB_OddParity;
652 else
653 urb_val |= SUSBCR_SPASB_EvenParity;
654 } else
655 urb_val |= SUSBCR_SPASB_NoParity;
656 tty->termios->c_cflag &= ~CMSPAR;
657 tty_encode_baud_rate(tty, speed, speed);
658
659 result = usb_control_msg(port->serial->dev,
660 usb_rcvctrlpipe(port->serial->dev, 0),
661 SUSBCRequest_SetBaudRateParityAndStopBits,
662 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
663 urb_val,
664 0,
665 NULL,
666 0,
667 KOBIL_TIMEOUT
668 );
669}
670
671static int kobil_ioctl(struct tty_struct *tty,
672 unsigned int cmd, unsigned long arg)
673{
674 struct usb_serial_port *port = tty->driver_data;
675 struct kobil_private *priv = usb_get_serial_port_data(port);
676 unsigned char *transfer_buffer;
677 int transfer_buffer_length = 8;
678 int result;
679
680 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
681 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
682 /* This device doesn't support ioctl calls */
683 return -ENOIOCTLCMD;
684
685 switch (cmd) {
686 case TCFLSH:
687 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
688 if (!transfer_buffer)
689 return -ENOBUFS;
690
691 result = usb_control_msg(port->serial->dev,
692 usb_rcvctrlpipe(port->serial->dev, 0),
693 SUSBCRequest_Misc,
694 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
695 SUSBCR_MSC_ResetAllQueues,
696 0,
697 NULL, /* transfer_buffer, */
698 0,
699 KOBIL_TIMEOUT
700 );
701
702 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
703 kfree(transfer_buffer);
704 return (result < 0) ? -EIO: 0;
705 default:
706 return -ENOIOCTLCMD;
707 }
708}
709
710static int __init kobil_init(void)
711{
712 int retval;
713 retval = usb_serial_register(&kobil_device);
714 if (retval)
715 goto failed_usb_serial_register;
716 retval = usb_register(&kobil_driver);
717 if (retval)
718 goto failed_usb_register;
719
720 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
721 DRIVER_DESC "\n");
722
723 return 0;
724failed_usb_register:
725 usb_serial_deregister(&kobil_device);
726failed_usb_serial_register:
727 return retval;
728}
729
730
731static void __exit kobil_exit(void)
732{
733 usb_deregister(&kobil_driver);
734 usb_serial_deregister(&kobil_device);
735}
736
737module_init(kobil_init);
738module_exit(kobil_exit);
739
740MODULE_AUTHOR(DRIVER_AUTHOR);
741MODULE_DESCRIPTION(DRIVER_DESC);
742MODULE_LICENSE("GPL");
743
744module_param(debug, bool, S_IRUGO | S_IWUSR);
745MODULE_PARM_DESC(debug, "Debug enabled or not");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * KOBIL USB Smart Card Terminal Driver
4 *
5 * Copyright (C) 2002 KOBIL Systems GmbH
6 * Author: Thomas Wahrenbruch
7 *
8 * Contact: linuxusb@kobil.de
9 *
10 * This program is largely derived from work by the linux-usb group
11 * and associated source files. Please see the usb/serial files for
12 * individual credits and copyrights.
13 *
14 * Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
15 * patience.
16 *
17 * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
18 * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
19 */
20
21
22#include <linux/kernel.h>
23#include <linux/errno.h>
24#include <linux/slab.h>
25#include <linux/tty.h>
26#include <linux/tty_driver.h>
27#include <linux/tty_flip.h>
28#include <linux/module.h>
29#include <linux/spinlock.h>
30#include <linux/uaccess.h>
31#include <linux/usb.h>
32#include <linux/usb/serial.h>
33#include <linux/ioctl.h>
34#include "kobil_sct.h"
35
36#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
37#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
38
39#define KOBIL_VENDOR_ID 0x0D46
40#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
41#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
42#define KOBIL_USBTWIN_PRODUCT_ID 0x0078
43#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
44
45#define KOBIL_TIMEOUT 500
46#define KOBIL_BUF_LENGTH 300
47
48
49/* Function prototypes */
50static int kobil_port_probe(struct usb_serial_port *probe);
51static void kobil_port_remove(struct usb_serial_port *probe);
52static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
53static void kobil_close(struct usb_serial_port *port);
54static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
55 const unsigned char *buf, int count);
56static unsigned int kobil_write_room(struct tty_struct *tty);
57static int kobil_ioctl(struct tty_struct *tty,
58 unsigned int cmd, unsigned long arg);
59static int kobil_tiocmget(struct tty_struct *tty);
60static int kobil_tiocmset(struct tty_struct *tty,
61 unsigned int set, unsigned int clear);
62static void kobil_read_int_callback(struct urb *urb);
63static void kobil_write_int_callback(struct urb *urb);
64static void kobil_set_termios(struct tty_struct *tty,
65 struct usb_serial_port *port,
66 const struct ktermios *old);
67static void kobil_init_termios(struct tty_struct *tty);
68
69static const struct usb_device_id id_table[] = {
70 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
71 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
72 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
73 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
74 { } /* Terminating entry */
75};
76MODULE_DEVICE_TABLE(usb, id_table);
77
78static struct usb_serial_driver kobil_device = {
79 .driver = {
80 .name = "kobil",
81 },
82 .description = "KOBIL USB smart card terminal",
83 .id_table = id_table,
84 .num_ports = 1,
85 .num_interrupt_out = 1,
86 .port_probe = kobil_port_probe,
87 .port_remove = kobil_port_remove,
88 .ioctl = kobil_ioctl,
89 .set_termios = kobil_set_termios,
90 .init_termios = kobil_init_termios,
91 .tiocmget = kobil_tiocmget,
92 .tiocmset = kobil_tiocmset,
93 .open = kobil_open,
94 .close = kobil_close,
95 .write = kobil_write,
96 .write_room = kobil_write_room,
97 .read_int_callback = kobil_read_int_callback,
98 .write_int_callback = kobil_write_int_callback,
99};
100
101static struct usb_serial_driver * const serial_drivers[] = {
102 &kobil_device, NULL
103};
104
105struct kobil_private {
106 unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
107 int filled; /* index of the last char in buf */
108 int cur_pos; /* index of the next char to send in buf */
109 __u16 device_type;
110};
111
112
113static int kobil_port_probe(struct usb_serial_port *port)
114{
115 struct usb_serial *serial = port->serial;
116 struct kobil_private *priv;
117
118 priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
119 if (!priv)
120 return -ENOMEM;
121
122 priv->filled = 0;
123 priv->cur_pos = 0;
124 priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
125
126 switch (priv->device_type) {
127 case KOBIL_ADAPTER_B_PRODUCT_ID:
128 dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
129 break;
130 case KOBIL_ADAPTER_K_PRODUCT_ID:
131 dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
132 break;
133 case KOBIL_USBTWIN_PRODUCT_ID:
134 dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
135 break;
136 case KOBIL_KAAN_SIM_PRODUCT_ID:
137 dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
138 break;
139 }
140 usb_set_serial_port_data(port, priv);
141
142 return 0;
143}
144
145
146static void kobil_port_remove(struct usb_serial_port *port)
147{
148 struct kobil_private *priv;
149
150 priv = usb_get_serial_port_data(port);
151 kfree(priv);
152}
153
154static void kobil_init_termios(struct tty_struct *tty)
155{
156 /* Default to echo off and other sane device settings */
157 tty->termios.c_lflag = 0;
158 tty->termios.c_iflag = IGNBRK | IGNPAR | IXOFF;
159 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
160 tty->termios.c_oflag &= ~ONLCR;
161}
162
163static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
164{
165 struct device *dev = &port->dev;
166 int result = 0;
167 struct kobil_private *priv;
168 unsigned char *transfer_buffer;
169 int transfer_buffer_length = 8;
170
171 priv = usb_get_serial_port_data(port);
172
173 /* allocate memory for transfer buffer */
174 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
175 if (!transfer_buffer)
176 return -ENOMEM;
177
178 /* get hardware version */
179 result = usb_control_msg(port->serial->dev,
180 usb_rcvctrlpipe(port->serial->dev, 0),
181 SUSBCRequest_GetMisc,
182 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
183 SUSBCR_MSC_GetHWVersion,
184 0,
185 transfer_buffer,
186 transfer_buffer_length,
187 KOBIL_TIMEOUT
188 );
189 dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
190 if (result >= 3) {
191 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
192 transfer_buffer[1], transfer_buffer[2]);
193 }
194
195 /* get firmware version */
196 result = usb_control_msg(port->serial->dev,
197 usb_rcvctrlpipe(port->serial->dev, 0),
198 SUSBCRequest_GetMisc,
199 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
200 SUSBCR_MSC_GetFWVersion,
201 0,
202 transfer_buffer,
203 transfer_buffer_length,
204 KOBIL_TIMEOUT
205 );
206 dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
207 if (result >= 3) {
208 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
209 transfer_buffer[1], transfer_buffer[2]);
210 }
211
212 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
213 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
214 /* Setting Baudrate, Parity and Stopbits */
215 result = usb_control_msg(port->serial->dev,
216 usb_sndctrlpipe(port->serial->dev, 0),
217 SUSBCRequest_SetBaudRateParityAndStopBits,
218 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
219 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
220 SUSBCR_SPASB_1StopBit,
221 0,
222 NULL,
223 0,
224 KOBIL_TIMEOUT
225 );
226 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
227
228 /* reset all queues */
229 result = usb_control_msg(port->serial->dev,
230 usb_sndctrlpipe(port->serial->dev, 0),
231 SUSBCRequest_Misc,
232 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
233 SUSBCR_MSC_ResetAllQueues,
234 0,
235 NULL,
236 0,
237 KOBIL_TIMEOUT
238 );
239 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
240 }
241 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
242 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
243 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
244 /* start reading (Adapter B 'cause PNP string) */
245 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
246 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
247 }
248
249 kfree(transfer_buffer);
250 return 0;
251}
252
253
254static void kobil_close(struct usb_serial_port *port)
255{
256 /* FIXME: Add rts/dtr methods */
257 usb_kill_urb(port->interrupt_out_urb);
258 usb_kill_urb(port->interrupt_in_urb);
259}
260
261
262static void kobil_read_int_callback(struct urb *urb)
263{
264 int result;
265 struct usb_serial_port *port = urb->context;
266 unsigned char *data = urb->transfer_buffer;
267 int status = urb->status;
268
269 if (status) {
270 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
271 return;
272 }
273
274 if (urb->actual_length) {
275 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
276 data);
277 tty_insert_flip_string(&port->port, data, urb->actual_length);
278 tty_flip_buffer_push(&port->port);
279 }
280
281 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
282 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
283}
284
285
286static void kobil_write_int_callback(struct urb *urb)
287{
288}
289
290
291static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
292 const unsigned char *buf, int count)
293{
294 int length = 0;
295 int result = 0;
296 int todo = 0;
297 struct kobil_private *priv;
298
299 if (count == 0) {
300 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
301 return 0;
302 }
303
304 priv = usb_get_serial_port_data(port);
305
306 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
307 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
308 return -ENOMEM;
309 }
310
311 /* Copy data to buffer */
312 memcpy(priv->buf + priv->filled, buf, count);
313 usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
314 priv->filled = priv->filled + count;
315
316 /* only send complete block. TWIN, KAAN SIM and adapter K
317 use the same protocol. */
318 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
319 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
320 /* stop reading (except TWIN and KAAN SIM) */
321 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
322 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
323 usb_kill_urb(port->interrupt_in_urb);
324
325 todo = priv->filled - priv->cur_pos;
326
327 while (todo > 0) {
328 /* max 8 byte in one urb (endpoint size) */
329 length = min(todo, port->interrupt_out_size);
330 /* copy data to transfer buffer */
331 memcpy(port->interrupt_out_buffer,
332 priv->buf + priv->cur_pos, length);
333 port->interrupt_out_urb->transfer_buffer_length = length;
334
335 priv->cur_pos = priv->cur_pos + length;
336 result = usb_submit_urb(port->interrupt_out_urb,
337 GFP_ATOMIC);
338 dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
339 todo = priv->filled - priv->cur_pos;
340
341 if (todo > 0)
342 msleep(24);
343 }
344
345 priv->filled = 0;
346 priv->cur_pos = 0;
347
348 /* start reading (except TWIN and KAAN SIM) */
349 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
350 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
351 result = usb_submit_urb(port->interrupt_in_urb,
352 GFP_ATOMIC);
353 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
354 }
355 }
356 return count;
357}
358
359
360static unsigned int kobil_write_room(struct tty_struct *tty)
361{
362 /* FIXME */
363 return 8;
364}
365
366
367static int kobil_tiocmget(struct tty_struct *tty)
368{
369 struct usb_serial_port *port = tty->driver_data;
370 struct kobil_private *priv;
371 int result;
372 unsigned char *transfer_buffer;
373 int transfer_buffer_length = 8;
374
375 priv = usb_get_serial_port_data(port);
376 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
377 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
378 /* This device doesn't support ioctl calls */
379 return -EINVAL;
380 }
381
382 /* allocate memory for transfer buffer */
383 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
384 if (!transfer_buffer)
385 return -ENOMEM;
386
387 result = usb_control_msg(port->serial->dev,
388 usb_rcvctrlpipe(port->serial->dev, 0),
389 SUSBCRequest_GetStatusLineState,
390 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
391 0,
392 0,
393 transfer_buffer,
394 transfer_buffer_length,
395 KOBIL_TIMEOUT);
396
397 dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
398 result);
399 if (result < 1) {
400 if (result >= 0)
401 result = -EIO;
402 goto out_free;
403 }
404
405 dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
406
407 result = 0;
408 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
409 result = TIOCM_DSR;
410out_free:
411 kfree(transfer_buffer);
412 return result;
413}
414
415static int kobil_tiocmset(struct tty_struct *tty,
416 unsigned int set, unsigned int clear)
417{
418 struct usb_serial_port *port = tty->driver_data;
419 struct device *dev = &port->dev;
420 struct kobil_private *priv;
421 int result;
422 int dtr = 0;
423 int rts = 0;
424
425 /* FIXME: locking ? */
426 priv = usb_get_serial_port_data(port);
427 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
428 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
429 /* This device doesn't support ioctl calls */
430 return -EINVAL;
431 }
432
433 if (set & TIOCM_RTS)
434 rts = 1;
435 if (set & TIOCM_DTR)
436 dtr = 1;
437 if (clear & TIOCM_RTS)
438 rts = 0;
439 if (clear & TIOCM_DTR)
440 dtr = 0;
441
442 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
443 if (dtr != 0)
444 dev_dbg(dev, "%s - Setting DTR\n", __func__);
445 else
446 dev_dbg(dev, "%s - Clearing DTR\n", __func__);
447 result = usb_control_msg(port->serial->dev,
448 usb_sndctrlpipe(port->serial->dev, 0),
449 SUSBCRequest_SetStatusLinesOrQueues,
450 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
451 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
452 0,
453 NULL,
454 0,
455 KOBIL_TIMEOUT);
456 } else {
457 if (rts != 0)
458 dev_dbg(dev, "%s - Setting RTS\n", __func__);
459 else
460 dev_dbg(dev, "%s - Clearing RTS\n", __func__);
461 result = usb_control_msg(port->serial->dev,
462 usb_sndctrlpipe(port->serial->dev, 0),
463 SUSBCRequest_SetStatusLinesOrQueues,
464 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
465 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
466 0,
467 NULL,
468 0,
469 KOBIL_TIMEOUT);
470 }
471 dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
472 return (result < 0) ? result : 0;
473}
474
475static void kobil_set_termios(struct tty_struct *tty,
476 struct usb_serial_port *port,
477 const struct ktermios *old)
478{
479 struct kobil_private *priv;
480 int result;
481 unsigned short urb_val = 0;
482 int c_cflag = tty->termios.c_cflag;
483 speed_t speed;
484
485 priv = usb_get_serial_port_data(port);
486 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
487 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
488 /* This device doesn't support ioctl calls */
489 tty_termios_copy_hw(&tty->termios, old);
490 return;
491 }
492
493 speed = tty_get_baud_rate(tty);
494 switch (speed) {
495 case 1200:
496 urb_val = SUSBCR_SBR_1200;
497 break;
498 default:
499 speed = 9600;
500 fallthrough;
501 case 9600:
502 urb_val = SUSBCR_SBR_9600;
503 break;
504 }
505 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
506 SUSBCR_SPASB_1StopBit;
507 if (c_cflag & PARENB) {
508 if (c_cflag & PARODD)
509 urb_val |= SUSBCR_SPASB_OddParity;
510 else
511 urb_val |= SUSBCR_SPASB_EvenParity;
512 } else
513 urb_val |= SUSBCR_SPASB_NoParity;
514 tty->termios.c_cflag &= ~CMSPAR;
515 tty_encode_baud_rate(tty, speed, speed);
516
517 result = usb_control_msg(port->serial->dev,
518 usb_sndctrlpipe(port->serial->dev, 0),
519 SUSBCRequest_SetBaudRateParityAndStopBits,
520 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
521 urb_val,
522 0,
523 NULL,
524 0,
525 KOBIL_TIMEOUT
526 );
527 if (result) {
528 dev_err(&port->dev, "failed to update line settings: %d\n",
529 result);
530 }
531}
532
533static int kobil_ioctl(struct tty_struct *tty,
534 unsigned int cmd, unsigned long arg)
535{
536 struct usb_serial_port *port = tty->driver_data;
537 struct kobil_private *priv = usb_get_serial_port_data(port);
538 int result;
539
540 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
541 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
542 /* This device doesn't support ioctl calls */
543 return -ENOIOCTLCMD;
544
545 switch (cmd) {
546 case TCFLSH:
547 result = usb_control_msg(port->serial->dev,
548 usb_sndctrlpipe(port->serial->dev, 0),
549 SUSBCRequest_Misc,
550 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
551 SUSBCR_MSC_ResetAllQueues,
552 0,
553 NULL,
554 0,
555 KOBIL_TIMEOUT
556 );
557
558 dev_dbg(&port->dev,
559 "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
560 __func__, result);
561 return (result < 0) ? -EIO: 0;
562 default:
563 return -ENOIOCTLCMD;
564 }
565}
566
567module_usb_serial_driver(serial_drivers, id_table);
568
569MODULE_AUTHOR(DRIVER_AUTHOR);
570MODULE_DESCRIPTION(DRIVER_DESC);
571MODULE_LICENSE("GPL");