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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 int 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 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 int 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 return 0;
154}
155
156static void kobil_init_termios(struct tty_struct *tty)
157{
158
159 tty->termios.c_lflag = 0;
160 tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
161 tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
162
163 tty->termios.c_oflag &= ~ONLCR;
164}
165
166static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
167{
168 struct device *dev = &port->dev;
169 int result = 0;
170 struct kobil_private *priv;
171 unsigned char *transfer_buffer;
172 int transfer_buffer_length = 8;
173
174 priv = usb_get_serial_port_data(port);
175
176
177 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
178 if (!transfer_buffer)
179 return -ENOMEM;
180
181
182 result = usb_control_msg(port->serial->dev,
183 usb_rcvctrlpipe(port->serial->dev, 0),
184 SUSBCRequest_GetMisc,
185 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
186 SUSBCR_MSC_GetHWVersion,
187 0,
188 transfer_buffer,
189 transfer_buffer_length,
190 KOBIL_TIMEOUT
191 );
192 dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
193 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
194 transfer_buffer[1], transfer_buffer[2]);
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 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
209 transfer_buffer[1], transfer_buffer[2]);
210
211 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
212 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
213
214 result = usb_control_msg(port->serial->dev,
215 usb_sndctrlpipe(port->serial->dev, 0),
216 SUSBCRequest_SetBaudRateParityAndStopBits,
217 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
218 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
219 SUSBCR_SPASB_1StopBit,
220 0,
221 NULL,
222 0,
223 KOBIL_TIMEOUT
224 );
225 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
226
227
228 result = usb_control_msg(port->serial->dev,
229 usb_sndctrlpipe(port->serial->dev, 0),
230 SUSBCRequest_Misc,
231 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
232 SUSBCR_MSC_ResetAllQueues,
233 0,
234 NULL,
235 0,
236 KOBIL_TIMEOUT
237 );
238 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
239 }
240 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
241 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
242 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
243
244 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
245 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
246 }
247
248 kfree(transfer_buffer);
249 return 0;
250}
251
252
253static void kobil_close(struct usb_serial_port *port)
254{
255
256 usb_kill_urb(port->interrupt_out_urb);
257 usb_kill_urb(port->interrupt_in_urb);
258}
259
260
261static void kobil_read_int_callback(struct urb *urb)
262{
263 int result;
264 struct usb_serial_port *port = urb->context;
265 unsigned char *data = urb->transfer_buffer;
266 int status = urb->status;
267
268 if (status) {
269 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
270 return;
271 }
272
273 if (urb->actual_length) {
274 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
275 data);
276 tty_insert_flip_string(&port->port, data, urb->actual_length);
277 tty_flip_buffer_push(&port->port);
278 }
279
280 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
281 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
282}
283
284
285static void kobil_write_int_callback(struct urb *urb)
286{
287}
288
289
290static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
291 const unsigned char *buf, int count)
292{
293 int length = 0;
294 int result = 0;
295 int todo = 0;
296 struct kobil_private *priv;
297
298 if (count == 0) {
299 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
300 return 0;
301 }
302
303 priv = usb_get_serial_port_data(port);
304
305 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
306 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
307 return -ENOMEM;
308 }
309
310
311 memcpy(priv->buf + priv->filled, buf, count);
312 usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
313 priv->filled = priv->filled + count;
314
315
316
317 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
318 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
319
320 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
321 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
322 usb_kill_urb(port->interrupt_in_urb);
323
324 todo = priv->filled - priv->cur_pos;
325
326 while (todo > 0) {
327
328 length = min(todo, port->interrupt_out_size);
329
330 memcpy(port->interrupt_out_buffer,
331 priv->buf + priv->cur_pos, length);
332 port->interrupt_out_urb->transfer_buffer_length = length;
333
334 priv->cur_pos = priv->cur_pos + length;
335 result = usb_submit_urb(port->interrupt_out_urb,
336 GFP_ATOMIC);
337 dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
338 todo = priv->filled - priv->cur_pos;
339
340 if (todo > 0)
341 msleep(24);
342 }
343
344 priv->filled = 0;
345 priv->cur_pos = 0;
346
347
348 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
349 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
350 result = usb_submit_urb(port->interrupt_in_urb,
351 GFP_ATOMIC);
352 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
353 }
354 }
355 return count;
356}
357
358
359static int kobil_write_room(struct tty_struct *tty)
360{
361
362 return 8;
363}
364
365
366static int kobil_tiocmget(struct tty_struct *tty)
367{
368 struct usb_serial_port *port = tty->driver_data;
369 struct kobil_private *priv;
370 int result;
371 unsigned char *transfer_buffer;
372 int transfer_buffer_length = 8;
373
374 priv = usb_get_serial_port_data(port);
375 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
376 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
377
378 return -EINVAL;
379 }
380
381
382 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
383 if (!transfer_buffer)
384 return -ENOMEM;
385
386 result = usb_control_msg(port->serial->dev,
387 usb_rcvctrlpipe(port->serial->dev, 0),
388 SUSBCRequest_GetStatusLineState,
389 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
390 0,
391 0,
392 transfer_buffer,
393 transfer_buffer_length,
394 KOBIL_TIMEOUT);
395
396 dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
397 __func__, result, transfer_buffer[0]);
398
399 result = 0;
400 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
401 result = TIOCM_DSR;
402 kfree(transfer_buffer);
403 return result;
404}
405
406static int kobil_tiocmset(struct tty_struct *tty,
407 unsigned int set, unsigned int clear)
408{
409 struct usb_serial_port *port = tty->driver_data;
410 struct device *dev = &port->dev;
411 struct kobil_private *priv;
412 int result;
413 int dtr = 0;
414 int rts = 0;
415
416
417 priv = usb_get_serial_port_data(port);
418 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
419 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
420
421 return -EINVAL;
422 }
423
424 if (set & TIOCM_RTS)
425 rts = 1;
426 if (set & TIOCM_DTR)
427 dtr = 1;
428 if (clear & TIOCM_RTS)
429 rts = 0;
430 if (clear & TIOCM_DTR)
431 dtr = 0;
432
433 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
434 if (dtr != 0)
435 dev_dbg(dev, "%s - Setting DTR\n", __func__);
436 else
437 dev_dbg(dev, "%s - Clearing DTR\n", __func__);
438 result = usb_control_msg(port->serial->dev,
439 usb_sndctrlpipe(port->serial->dev, 0),
440 SUSBCRequest_SetStatusLinesOrQueues,
441 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
442 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
443 0,
444 NULL,
445 0,
446 KOBIL_TIMEOUT);
447 } else {
448 if (rts != 0)
449 dev_dbg(dev, "%s - Setting RTS\n", __func__);
450 else
451 dev_dbg(dev, "%s - Clearing RTS\n", __func__);
452 result = usb_control_msg(port->serial->dev,
453 usb_sndctrlpipe(port->serial->dev, 0),
454 SUSBCRequest_SetStatusLinesOrQueues,
455 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
456 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
457 0,
458 NULL,
459 0,
460 KOBIL_TIMEOUT);
461 }
462 dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
463 return (result < 0) ? result : 0;
464}
465
466static void kobil_set_termios(struct tty_struct *tty,
467 struct usb_serial_port *port, struct ktermios *old)
468{
469 struct kobil_private *priv;
470 int result;
471 unsigned short urb_val = 0;
472 int c_cflag = tty->termios.c_cflag;
473 speed_t speed;
474
475 priv = usb_get_serial_port_data(port);
476 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
477 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
478
479 tty_termios_copy_hw(&tty->termios, old);
480 return;
481 }
482
483 speed = tty_get_baud_rate(tty);
484 switch (speed) {
485 case 1200:
486 urb_val = SUSBCR_SBR_1200;
487 break;
488 default:
489 speed = 9600;
490
491 case 9600:
492 urb_val = SUSBCR_SBR_9600;
493 break;
494 }
495 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
496 SUSBCR_SPASB_1StopBit;
497 if (c_cflag & PARENB) {
498 if (c_cflag & PARODD)
499 urb_val |= SUSBCR_SPASB_OddParity;
500 else
501 urb_val |= SUSBCR_SPASB_EvenParity;
502 } else
503 urb_val |= SUSBCR_SPASB_NoParity;
504 tty->termios.c_cflag &= ~CMSPAR;
505 tty_encode_baud_rate(tty, speed, speed);
506
507 result = usb_control_msg(port->serial->dev,
508 usb_sndctrlpipe(port->serial->dev, 0),
509 SUSBCRequest_SetBaudRateParityAndStopBits,
510 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
511 urb_val,
512 0,
513 NULL,
514 0,
515 KOBIL_TIMEOUT
516 );
517}
518
519static int kobil_ioctl(struct tty_struct *tty,
520 unsigned int cmd, unsigned long arg)
521{
522 struct usb_serial_port *port = tty->driver_data;
523 struct kobil_private *priv = usb_get_serial_port_data(port);
524 int result;
525
526 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
527 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
528
529 return -ENOIOCTLCMD;
530
531 switch (cmd) {
532 case TCFLSH:
533 result = usb_control_msg(port->serial->dev,
534 usb_sndctrlpipe(port->serial->dev, 0),
535 SUSBCRequest_Misc,
536 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
537 SUSBCR_MSC_ResetAllQueues,
538 0,
539 NULL,
540 0,
541 KOBIL_TIMEOUT
542 );
543
544 dev_dbg(&port->dev,
545 "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
546 __func__, result);
547 return (result < 0) ? -EIO: 0;
548 default:
549 return -ENOIOCTLCMD;
550 }
551}
552
553module_usb_serial_driver(serial_drivers, id_table);
554
555MODULE_AUTHOR(DRIVER_AUTHOR);
556MODULE_DESCRIPTION(DRIVER_DESC);
557MODULE_LICENSE("GPL");
558
