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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
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, struct ktermios *old);
66static void kobil_init_termios(struct tty_struct *tty);
67
68static const struct usb_device_id id_table[] = {
69 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
70 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
71 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
72 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
73 { }
74};
75MODULE_DEVICE_TABLE(usb, id_table);
76
77static struct usb_serial_driver kobil_device = {
78 .driver = {
79 .owner = THIS_MODULE,
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];
107 int filled;
108 int cur_pos;
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
157 tty->termios.c_lflag = 0;
158 tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
159 tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
160
161 tty->termios.c_oflag &= ~ONLCR;
162}
163
164static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
165{
166 struct device *dev = &port->dev;
167 int result = 0;
168 struct kobil_private *priv;
169 unsigned char *transfer_buffer;
170 int transfer_buffer_length = 8;
171
172 priv = usb_get_serial_port_data(port);
173
174
175 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
176 if (!transfer_buffer)
177 return -ENOMEM;
178
179
180 result = usb_control_msg(port->serial->dev,
181 usb_rcvctrlpipe(port->serial->dev, 0),
182 SUSBCRequest_GetMisc,
183 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
184 SUSBCR_MSC_GetHWVersion,
185 0,
186 transfer_buffer,
187 transfer_buffer_length,
188 KOBIL_TIMEOUT
189 );
190 dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
191 if (result >= 3) {
192 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
193 transfer_buffer[1], transfer_buffer[2]);
194 }
195
196
197 result = usb_control_msg(port->serial->dev,
198 usb_rcvctrlpipe(port->serial->dev, 0),
199 SUSBCRequest_GetMisc,
200 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
201 SUSBCR_MSC_GetFWVersion,
202 0,
203 transfer_buffer,
204 transfer_buffer_length,
205 KOBIL_TIMEOUT
206 );
207 dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
208 if (result >= 3) {
209 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
210 transfer_buffer[1], transfer_buffer[2]);
211 }
212
213 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
214 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
215
216 result = usb_control_msg(port->serial->dev,
217 usb_sndctrlpipe(port->serial->dev, 0),
218 SUSBCRequest_SetBaudRateParityAndStopBits,
219 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
220 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
221 SUSBCR_SPASB_1StopBit,
222 0,
223 NULL,
224 0,
225 KOBIL_TIMEOUT
226 );
227 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
228
229
230 result = usb_control_msg(port->serial->dev,
231 usb_sndctrlpipe(port->serial->dev, 0),
232 SUSBCRequest_Misc,
233 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
234 SUSBCR_MSC_ResetAllQueues,
235 0,
236 NULL,
237 0,
238 KOBIL_TIMEOUT
239 );
240 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
241 }
242 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
243 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
244 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
245
246 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
247 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
248 }
249
250 kfree(transfer_buffer);
251 return 0;
252}
253
254
255static void kobil_close(struct usb_serial_port *port)
256{
257
258 usb_kill_urb(port->interrupt_out_urb);
259 usb_kill_urb(port->interrupt_in_urb);
260}
261
262
263static void kobil_read_int_callback(struct urb *urb)
264{
265 int result;
266 struct usb_serial_port *port = urb->context;
267 unsigned char *data = urb->transfer_buffer;
268 int status = urb->status;
269
270 if (status) {
271 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
272 return;
273 }
274
275 if (urb->actual_length) {
276 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
277 data);
278 tty_insert_flip_string(&port->port, data, urb->actual_length);
279 tty_flip_buffer_push(&port->port);
280 }
281
282 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
283 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
284}
285
286
287static void kobil_write_int_callback(struct urb *urb)
288{
289}
290
291
292static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
293 const unsigned char *buf, int count)
294{
295 int length = 0;
296 int result = 0;
297 int todo = 0;
298 struct kobil_private *priv;
299
300 if (count == 0) {
301 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
302 return 0;
303 }
304
305 priv = usb_get_serial_port_data(port);
306
307 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
308 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
309 return -ENOMEM;
310 }
311
312
313 memcpy(priv->buf + priv->filled, buf, count);
314 usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
315 priv->filled = priv->filled + count;
316
317
318
319 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
320 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
321
322 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
323 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
324 usb_kill_urb(port->interrupt_in_urb);
325
326 todo = priv->filled - priv->cur_pos;
327
328 while (todo > 0) {
329
330 length = min(todo, port->interrupt_out_size);
331
332 memcpy(port->interrupt_out_buffer,
333 priv->buf + priv->cur_pos, length);
334 port->interrupt_out_urb->transfer_buffer_length = length;
335
336 priv->cur_pos = priv->cur_pos + length;
337 result = usb_submit_urb(port->interrupt_out_urb,
338 GFP_ATOMIC);
339 dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
340 todo = priv->filled - priv->cur_pos;
341
342 if (todo > 0)
343 msleep(24);
344 }
345
346 priv->filled = 0;
347 priv->cur_pos = 0;
348
349
350 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
351 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
352 result = usb_submit_urb(port->interrupt_in_urb,
353 GFP_ATOMIC);
354 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
355 }
356 }
357 return count;
358}
359
360
361static unsigned int kobil_write_room(struct tty_struct *tty)
362{
363
364 return 8;
365}
366
367
368static int kobil_tiocmget(struct tty_struct *tty)
369{
370 struct usb_serial_port *port = tty->driver_data;
371 struct kobil_private *priv;
372 int result;
373 unsigned char *transfer_buffer;
374 int transfer_buffer_length = 8;
375
376 priv = usb_get_serial_port_data(port);
377 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
378 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
379
380 return -EINVAL;
381 }
382
383
384 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
385 if (!transfer_buffer)
386 return -ENOMEM;
387
388 result = usb_control_msg(port->serial->dev,
389 usb_rcvctrlpipe(port->serial->dev, 0),
390 SUSBCRequest_GetStatusLineState,
391 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
392 0,
393 0,
394 transfer_buffer,
395 transfer_buffer_length,
396 KOBIL_TIMEOUT);
397
398 dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
399 result);
400 if (result < 1) {
401 if (result >= 0)
402 result = -EIO;
403 goto out_free;
404 }
405
406 dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
407
408 result = 0;
409 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
410 result = TIOCM_DSR;
411out_free:
412 kfree(transfer_buffer);
413 return result;
414}
415
416static int kobil_tiocmset(struct tty_struct *tty,
417 unsigned int set, unsigned int clear)
418{
419 struct usb_serial_port *port = tty->driver_data;
420 struct device *dev = &port->dev;
421 struct kobil_private *priv;
422 int result;
423 int dtr = 0;
424 int rts = 0;
425
426
427 priv = usb_get_serial_port_data(port);
428 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
429 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
430
431 return -EINVAL;
432 }
433
434 if (set & TIOCM_RTS)
435 rts = 1;
436 if (set & TIOCM_DTR)
437 dtr = 1;
438 if (clear & TIOCM_RTS)
439 rts = 0;
440 if (clear & TIOCM_DTR)
441 dtr = 0;
442
443 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
444 if (dtr != 0)
445 dev_dbg(dev, "%s - Setting DTR\n", __func__);
446 else
447 dev_dbg(dev, "%s - Clearing DTR\n", __func__);
448 result = usb_control_msg(port->serial->dev,
449 usb_sndctrlpipe(port->serial->dev, 0),
450 SUSBCRequest_SetStatusLinesOrQueues,
451 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
452 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
453 0,
454 NULL,
455 0,
456 KOBIL_TIMEOUT);
457 } else {
458 if (rts != 0)
459 dev_dbg(dev, "%s - Setting RTS\n", __func__);
460 else
461 dev_dbg(dev, "%s - Clearing RTS\n", __func__);
462 result = usb_control_msg(port->serial->dev,
463 usb_sndctrlpipe(port->serial->dev, 0),
464 SUSBCRequest_SetStatusLinesOrQueues,
465 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
466 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
467 0,
468 NULL,
469 0,
470 KOBIL_TIMEOUT);
471 }
472 dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
473 return (result < 0) ? result : 0;
474}
475
476static void kobil_set_termios(struct tty_struct *tty,
477 struct usb_serial_port *port, 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
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
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");
572
