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26#include <linux/kernel.h>
27#include <linux/errno.h>
28#include <linux/slab.h>
29#include <linux/tty.h>
30#include <linux/tty_driver.h>
31#include <linux/tty_flip.h>
32#include <linux/module.h>
33#include <linux/spinlock.h>
34#include <linux/uaccess.h>
35#include <linux/usb.h>
36#include <linux/usb/serial.h>
37#include <linux/ioctl.h>
38#include "kobil_sct.h"
39
40#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
41#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
42
43#define KOBIL_VENDOR_ID 0x0D46
44#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
45#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
46#define KOBIL_USBTWIN_PRODUCT_ID 0x0078
47#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
48
49#define KOBIL_TIMEOUT 500
50#define KOBIL_BUF_LENGTH 300
51
52
53
54static int kobil_port_probe(struct usb_serial_port *probe);
55static int kobil_port_remove(struct usb_serial_port *probe);
56static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
57static void kobil_close(struct usb_serial_port *port);
58static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
59 const unsigned char *buf, int count);
60static int kobil_write_room(struct tty_struct *tty);
61static int kobil_ioctl(struct tty_struct *tty,
62 unsigned int cmd, unsigned long arg);
63static int kobil_tiocmget(struct tty_struct *tty);
64static int kobil_tiocmset(struct tty_struct *tty,
65 unsigned int set, unsigned int clear);
66static void kobil_read_int_callback(struct urb *urb);
67static void kobil_write_int_callback(struct urb *urb);
68static void kobil_set_termios(struct tty_struct *tty,
69 struct usb_serial_port *port, struct ktermios *old);
70static void kobil_init_termios(struct tty_struct *tty);
71
72static const struct usb_device_id id_table[] = {
73 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
74 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
75 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
76 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
77 { }
78};
79MODULE_DEVICE_TABLE(usb, id_table);
80
81static struct usb_serial_driver kobil_device = {
82 .driver = {
83 .owner = THIS_MODULE,
84 .name = "kobil",
85 },
86 .description = "KOBIL USB smart card terminal",
87 .id_table = id_table,
88 .num_ports = 1,
89 .port_probe = kobil_port_probe,
90 .port_remove = kobil_port_remove,
91 .ioctl = kobil_ioctl,
92 .set_termios = kobil_set_termios,
93 .init_termios = kobil_init_termios,
94 .tiocmget = kobil_tiocmget,
95 .tiocmset = kobil_tiocmset,
96 .open = kobil_open,
97 .close = kobil_close,
98 .write = kobil_write,
99 .write_room = kobil_write_room,
100 .read_int_callback = kobil_read_int_callback,
101 .write_int_callback = kobil_write_int_callback,
102};
103
104static struct usb_serial_driver * const serial_drivers[] = {
105 &kobil_device, NULL
106};
107
108struct kobil_private {
109 unsigned char buf[KOBIL_BUF_LENGTH];
110 int filled;
111 int cur_pos;
112 __u16 device_type;
113};
114
115
116static int kobil_port_probe(struct usb_serial_port *port)
117{
118 struct usb_serial *serial = port->serial;
119 struct kobil_private *priv;
120
121 priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
122 if (!priv)
123 return -ENOMEM;
124
125 priv->filled = 0;
126 priv->cur_pos = 0;
127 priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
128
129 switch (priv->device_type) {
130 case KOBIL_ADAPTER_B_PRODUCT_ID:
131 dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
132 break;
133 case KOBIL_ADAPTER_K_PRODUCT_ID:
134 dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
135 break;
136 case KOBIL_USBTWIN_PRODUCT_ID:
137 dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
138 break;
139 case KOBIL_KAAN_SIM_PRODUCT_ID:
140 dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
141 break;
142 }
143 usb_set_serial_port_data(port, priv);
144
145 return 0;
146}
147
148
149static int kobil_port_remove(struct usb_serial_port *port)
150{
151 struct kobil_private *priv;
152
153 priv = usb_get_serial_port_data(port);
154 kfree(priv);
155
156 return 0;
157}
158
159static void kobil_init_termios(struct tty_struct *tty)
160{
161
162 tty->termios.c_lflag = 0;
163 tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
164 tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
165
166 tty->termios.c_oflag &= ~ONLCR;
167}
168
169static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
170{
171 struct device *dev = &port->dev;
172 int result = 0;
173 struct kobil_private *priv;
174 unsigned char *transfer_buffer;
175 int transfer_buffer_length = 8;
176
177 priv = usb_get_serial_port_data(port);
178
179
180 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
181 if (!transfer_buffer)
182 return -ENOMEM;
183
184
185 result = usb_control_msg(port->serial->dev,
186 usb_rcvctrlpipe(port->serial->dev, 0),
187 SUSBCRequest_GetMisc,
188 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
189 SUSBCR_MSC_GetHWVersion,
190 0,
191 transfer_buffer,
192 transfer_buffer_length,
193 KOBIL_TIMEOUT
194 );
195 dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
196 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
197 transfer_buffer[1], transfer_buffer[2]);
198
199
200 result = usb_control_msg(port->serial->dev,
201 usb_rcvctrlpipe(port->serial->dev, 0),
202 SUSBCRequest_GetMisc,
203 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
204 SUSBCR_MSC_GetFWVersion,
205 0,
206 transfer_buffer,
207 transfer_buffer_length,
208 KOBIL_TIMEOUT
209 );
210 dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
211 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
212 transfer_buffer[1], transfer_buffer[2]);
213
214 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
215 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
216
217 result = usb_control_msg(port->serial->dev,
218 usb_sndctrlpipe(port->serial->dev, 0),
219 SUSBCRequest_SetBaudRateParityAndStopBits,
220 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
221 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
222 SUSBCR_SPASB_1StopBit,
223 0,
224 NULL,
225 0,
226 KOBIL_TIMEOUT
227 );
228 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
229
230
231 result = usb_control_msg(port->serial->dev,
232 usb_sndctrlpipe(port->serial->dev, 0),
233 SUSBCRequest_Misc,
234 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
235 SUSBCR_MSC_ResetAllQueues,
236 0,
237 NULL,
238 0,
239 KOBIL_TIMEOUT
240 );
241 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
242 }
243 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
244 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
245 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
246
247 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
248 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
249 }
250
251 kfree(transfer_buffer);
252 return 0;
253}
254
255
256static void kobil_close(struct usb_serial_port *port)
257{
258
259 usb_kill_urb(port->interrupt_out_urb);
260 usb_kill_urb(port->interrupt_in_urb);
261}
262
263
264static void kobil_read_int_callback(struct urb *urb)
265{
266 int result;
267 struct usb_serial_port *port = urb->context;
268 unsigned char *data = urb->transfer_buffer;
269 int status = urb->status;
270
271 if (status) {
272 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
273 return;
274 }
275
276 if (urb->actual_length) {
277 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
278 data);
279 tty_insert_flip_string(&port->port, data, urb->actual_length);
280 tty_flip_buffer_push(&port->port);
281 }
282
283 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
284 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
285}
286
287
288static void kobil_write_int_callback(struct urb *urb)
289{
290}
291
292
293static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
294 const unsigned char *buf, int count)
295{
296 int length = 0;
297 int result = 0;
298 int todo = 0;
299 struct kobil_private *priv;
300
301 if (count == 0) {
302 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
303 return 0;
304 }
305
306 priv = usb_get_serial_port_data(port);
307
308 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
309 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
310 return -ENOMEM;
311 }
312
313
314 memcpy(priv->buf + priv->filled, buf, count);
315 usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
316 priv->filled = priv->filled + count;
317
318
319
320 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
321 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
322
323 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
324 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
325 usb_kill_urb(port->interrupt_in_urb);
326
327 todo = priv->filled - priv->cur_pos;
328
329 while (todo > 0) {
330
331 length = min(todo, port->interrupt_out_size);
332
333 memcpy(port->interrupt_out_buffer,
334 priv->buf + priv->cur_pos, length);
335 port->interrupt_out_urb->transfer_buffer_length = length;
336
337 priv->cur_pos = priv->cur_pos + length;
338 result = usb_submit_urb(port->interrupt_out_urb,
339 GFP_ATOMIC);
340 dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
341 todo = priv->filled - priv->cur_pos;
342
343 if (todo > 0)
344 msleep(24);
345 }
346
347 priv->filled = 0;
348 priv->cur_pos = 0;
349
350
351 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
352 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
353 result = usb_submit_urb(port->interrupt_in_urb,
354 GFP_ATOMIC);
355 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
356 }
357 }
358 return count;
359}
360
361
362static int kobil_write_room(struct tty_struct *tty)
363{
364
365 return 8;
366}
367
368
369static int kobil_tiocmget(struct tty_struct *tty)
370{
371 struct usb_serial_port *port = tty->driver_data;
372 struct kobil_private *priv;
373 int result;
374 unsigned char *transfer_buffer;
375 int transfer_buffer_length = 8;
376
377 priv = usb_get_serial_port_data(port);
378 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
379 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
380
381 return -EINVAL;
382 }
383
384
385 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
386 if (!transfer_buffer)
387 return -ENOMEM;
388
389 result = usb_control_msg(port->serial->dev,
390 usb_rcvctrlpipe(port->serial->dev, 0),
391 SUSBCRequest_GetStatusLineState,
392 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
393 0,
394 0,
395 transfer_buffer,
396 transfer_buffer_length,
397 KOBIL_TIMEOUT);
398
399 dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
400 __func__, result, transfer_buffer[0]);
401
402 result = 0;
403 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
404 result = TIOCM_DSR;
405 kfree(transfer_buffer);
406 return result;
407}
408
409static int kobil_tiocmset(struct tty_struct *tty,
410 unsigned int set, unsigned int clear)
411{
412 struct usb_serial_port *port = tty->driver_data;
413 struct device *dev = &port->dev;
414 struct kobil_private *priv;
415 int result;
416 int dtr = 0;
417 int rts = 0;
418
419
420 priv = usb_get_serial_port_data(port);
421 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
422 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
423
424 return -EINVAL;
425 }
426
427 if (set & TIOCM_RTS)
428 rts = 1;
429 if (set & TIOCM_DTR)
430 dtr = 1;
431 if (clear & TIOCM_RTS)
432 rts = 0;
433 if (clear & TIOCM_DTR)
434 dtr = 0;
435
436 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
437 if (dtr != 0)
438 dev_dbg(dev, "%s - Setting DTR\n", __func__);
439 else
440 dev_dbg(dev, "%s - Clearing DTR\n", __func__);
441 result = usb_control_msg(port->serial->dev,
442 usb_sndctrlpipe(port->serial->dev, 0),
443 SUSBCRequest_SetStatusLinesOrQueues,
444 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
445 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
446 0,
447 NULL,
448 0,
449 KOBIL_TIMEOUT);
450 } else {
451 if (rts != 0)
452 dev_dbg(dev, "%s - Setting RTS\n", __func__);
453 else
454 dev_dbg(dev, "%s - Clearing RTS\n", __func__);
455 result = usb_control_msg(port->serial->dev,
456 usb_sndctrlpipe(port->serial->dev, 0),
457 SUSBCRequest_SetStatusLinesOrQueues,
458 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
459 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
460 0,
461 NULL,
462 0,
463 KOBIL_TIMEOUT);
464 }
465 dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
466 return (result < 0) ? result : 0;
467}
468
469static void kobil_set_termios(struct tty_struct *tty,
470 struct usb_serial_port *port, struct ktermios *old)
471{
472 struct kobil_private *priv;
473 int result;
474 unsigned short urb_val = 0;
475 int c_cflag = tty->termios.c_cflag;
476 speed_t speed;
477
478 priv = usb_get_serial_port_data(port);
479 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
480 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
481
482 tty_termios_copy_hw(&tty->termios, old);
483 return;
484 }
485
486 speed = tty_get_baud_rate(tty);
487 switch (speed) {
488 case 1200:
489 urb_val = SUSBCR_SBR_1200;
490 break;
491 default:
492 speed = 9600;
493 case 9600:
494 urb_val = SUSBCR_SBR_9600;
495 break;
496 }
497 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
498 SUSBCR_SPASB_1StopBit;
499 if (c_cflag & PARENB) {
500 if (c_cflag & PARODD)
501 urb_val |= SUSBCR_SPASB_OddParity;
502 else
503 urb_val |= SUSBCR_SPASB_EvenParity;
504 } else
505 urb_val |= SUSBCR_SPASB_NoParity;
506 tty->termios.c_cflag &= ~CMSPAR;
507 tty_encode_baud_rate(tty, speed, speed);
508
509 result = usb_control_msg(port->serial->dev,
510 usb_sndctrlpipe(port->serial->dev, 0),
511 SUSBCRequest_SetBaudRateParityAndStopBits,
512 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
513 urb_val,
514 0,
515 NULL,
516 0,
517 KOBIL_TIMEOUT
518 );
519}
520
521static int kobil_ioctl(struct tty_struct *tty,
522 unsigned int cmd, unsigned long arg)
523{
524 struct usb_serial_port *port = tty->driver_data;
525 struct kobil_private *priv = usb_get_serial_port_data(port);
526 int result;
527
528 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
529 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
530
531 return -ENOIOCTLCMD;
532
533 switch (cmd) {
534 case TCFLSH:
535 result = usb_control_msg(port->serial->dev,
536 usb_sndctrlpipe(port->serial->dev, 0),
537 SUSBCRequest_Misc,
538 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
539 SUSBCR_MSC_ResetAllQueues,
540 0,
541 NULL,
542 0,
543 KOBIL_TIMEOUT
544 );
545
546 dev_dbg(&port->dev,
547 "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
548 __func__, result);
549 return (result < 0) ? -EIO: 0;
550 default:
551 return -ENOIOCTLCMD;
552 }
553}
554
555module_usb_serial_driver(serial_drivers, id_table);
556
557MODULE_AUTHOR(DRIVER_AUTHOR);
558MODULE_DESCRIPTION(DRIVER_DESC);
559MODULE_LICENSE("GPL");
560
