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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 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 { } /* Terminating entry */
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]; /* 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 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 /* Default to echo off and other sane device settings */
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 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
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 /* allocate memory for transfer buffer */
177 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
178 if (!transfer_buffer)
179 return -ENOMEM;
180
181 /* get hardware version */
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 if (result >= 3) {
194 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
195 transfer_buffer[1], transfer_buffer[2]);
196 }
197
198 /* get firmware version */
199 result = usb_control_msg(port->serial->dev,
200 usb_rcvctrlpipe(port->serial->dev, 0),
201 SUSBCRequest_GetMisc,
202 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
203 SUSBCR_MSC_GetFWVersion,
204 0,
205 transfer_buffer,
206 transfer_buffer_length,
207 KOBIL_TIMEOUT
208 );
209 dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
210 if (result >= 3) {
211 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
212 transfer_buffer[1], transfer_buffer[2]);
213 }
214
215 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
216 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
217 /* Setting Baudrate, Parity and Stopbits */
218 result = usb_control_msg(port->serial->dev,
219 usb_sndctrlpipe(port->serial->dev, 0),
220 SUSBCRequest_SetBaudRateParityAndStopBits,
221 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
222 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
223 SUSBCR_SPASB_1StopBit,
224 0,
225 NULL,
226 0,
227 KOBIL_TIMEOUT
228 );
229 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
230
231 /* reset all queues */
232 result = usb_control_msg(port->serial->dev,
233 usb_sndctrlpipe(port->serial->dev, 0),
234 SUSBCRequest_Misc,
235 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
236 SUSBCR_MSC_ResetAllQueues,
237 0,
238 NULL,
239 0,
240 KOBIL_TIMEOUT
241 );
242 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
243 }
244 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
245 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
246 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
247 /* start reading (Adapter B 'cause PNP string) */
248 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
249 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
250 }
251
252 kfree(transfer_buffer);
253 return 0;
254}
255
256
257static void kobil_close(struct usb_serial_port *port)
258{
259 /* FIXME: Add rts/dtr methods */
260 usb_kill_urb(port->interrupt_out_urb);
261 usb_kill_urb(port->interrupt_in_urb);
262}
263
264
265static void kobil_read_int_callback(struct urb *urb)
266{
267 int result;
268 struct usb_serial_port *port = urb->context;
269 unsigned char *data = urb->transfer_buffer;
270 int status = urb->status;
271
272 if (status) {
273 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
274 return;
275 }
276
277 if (urb->actual_length) {
278 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
279 data);
280 tty_insert_flip_string(&port->port, data, urb->actual_length);
281 tty_flip_buffer_push(&port->port);
282 }
283
284 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
285 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
286}
287
288
289static void kobil_write_int_callback(struct urb *urb)
290{
291}
292
293
294static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
295 const unsigned char *buf, int count)
296{
297 int length = 0;
298 int result = 0;
299 int todo = 0;
300 struct kobil_private *priv;
301
302 if (count == 0) {
303 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
304 return 0;
305 }
306
307 priv = usb_get_serial_port_data(port);
308
309 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
310 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
311 return -ENOMEM;
312 }
313
314 /* Copy data to buffer */
315 memcpy(priv->buf + priv->filled, buf, count);
316 usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
317 priv->filled = priv->filled + count;
318
319 /* only send complete block. TWIN, KAAN SIM and adapter K
320 use the same protocol. */
321 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
322 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
323 /* stop reading (except TWIN and KAAN SIM) */
324 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
325 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
326 usb_kill_urb(port->interrupt_in_urb);
327
328 todo = priv->filled - priv->cur_pos;
329
330 while (todo > 0) {
331 /* max 8 byte in one urb (endpoint size) */
332 length = min(todo, port->interrupt_out_size);
333 /* copy data to transfer buffer */
334 memcpy(port->interrupt_out_buffer,
335 priv->buf + priv->cur_pos, length);
336 port->interrupt_out_urb->transfer_buffer_length = length;
337
338 priv->cur_pos = priv->cur_pos + length;
339 result = usb_submit_urb(port->interrupt_out_urb,
340 GFP_ATOMIC);
341 dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
342 todo = priv->filled - priv->cur_pos;
343
344 if (todo > 0)
345 msleep(24);
346 }
347
348 priv->filled = 0;
349 priv->cur_pos = 0;
350
351 /* start reading (except TWIN and KAAN SIM) */
352 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
353 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
354 result = usb_submit_urb(port->interrupt_in_urb,
355 GFP_ATOMIC);
356 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
357 }
358 }
359 return count;
360}
361
362
363static int kobil_write_room(struct tty_struct *tty)
364{
365 /* FIXME */
366 return 8;
367}
368
369
370static int kobil_tiocmget(struct tty_struct *tty)
371{
372 struct usb_serial_port *port = tty->driver_data;
373 struct kobil_private *priv;
374 int result;
375 unsigned char *transfer_buffer;
376 int transfer_buffer_length = 8;
377
378 priv = usb_get_serial_port_data(port);
379 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
380 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
381 /* This device doesn't support ioctl calls */
382 return -EINVAL;
383 }
384
385 /* allocate memory for transfer buffer */
386 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
387 if (!transfer_buffer)
388 return -ENOMEM;
389
390 result = usb_control_msg(port->serial->dev,
391 usb_rcvctrlpipe(port->serial->dev, 0),
392 SUSBCRequest_GetStatusLineState,
393 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
394 0,
395 0,
396 transfer_buffer,
397 transfer_buffer_length,
398 KOBIL_TIMEOUT);
399
400 dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
401 result);
402 if (result < 1) {
403 if (result >= 0)
404 result = -EIO;
405 goto out_free;
406 }
407
408 dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
409
410 result = 0;
411 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
412 result = TIOCM_DSR;
413out_free:
414 kfree(transfer_buffer);
415 return result;
416}
417
418static int kobil_tiocmset(struct tty_struct *tty,
419 unsigned int set, unsigned int clear)
420{
421 struct usb_serial_port *port = tty->driver_data;
422 struct device *dev = &port->dev;
423 struct kobil_private *priv;
424 int result;
425 int dtr = 0;
426 int rts = 0;
427
428 /* FIXME: locking ? */
429 priv = usb_get_serial_port_data(port);
430 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
431 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
432 /* This device doesn't support ioctl calls */
433 return -EINVAL;
434 }
435
436 if (set & TIOCM_RTS)
437 rts = 1;
438 if (set & TIOCM_DTR)
439 dtr = 1;
440 if (clear & TIOCM_RTS)
441 rts = 0;
442 if (clear & TIOCM_DTR)
443 dtr = 0;
444
445 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
446 if (dtr != 0)
447 dev_dbg(dev, "%s - Setting DTR\n", __func__);
448 else
449 dev_dbg(dev, "%s - Clearing DTR\n", __func__);
450 result = usb_control_msg(port->serial->dev,
451 usb_sndctrlpipe(port->serial->dev, 0),
452 SUSBCRequest_SetStatusLinesOrQueues,
453 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
454 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
455 0,
456 NULL,
457 0,
458 KOBIL_TIMEOUT);
459 } else {
460 if (rts != 0)
461 dev_dbg(dev, "%s - Setting RTS\n", __func__);
462 else
463 dev_dbg(dev, "%s - Clearing RTS\n", __func__);
464 result = usb_control_msg(port->serial->dev,
465 usb_sndctrlpipe(port->serial->dev, 0),
466 SUSBCRequest_SetStatusLinesOrQueues,
467 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
468 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
469 0,
470 NULL,
471 0,
472 KOBIL_TIMEOUT);
473 }
474 dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
475 return (result < 0) ? result : 0;
476}
477
478static void kobil_set_termios(struct tty_struct *tty,
479 struct usb_serial_port *port, struct ktermios *old)
480{
481 struct kobil_private *priv;
482 int result;
483 unsigned short urb_val = 0;
484 int c_cflag = tty->termios.c_cflag;
485 speed_t speed;
486
487 priv = usb_get_serial_port_data(port);
488 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
489 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
490 /* This device doesn't support ioctl calls */
491 tty_termios_copy_hw(&tty->termios, old);
492 return;
493 }
494
495 speed = tty_get_baud_rate(tty);
496 switch (speed) {
497 case 1200:
498 urb_val = SUSBCR_SBR_1200;
499 break;
500 default:
501 speed = 9600;
502 fallthrough;
503 case 9600:
504 urb_val = SUSBCR_SBR_9600;
505 break;
506 }
507 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
508 SUSBCR_SPASB_1StopBit;
509 if (c_cflag & PARENB) {
510 if (c_cflag & PARODD)
511 urb_val |= SUSBCR_SPASB_OddParity;
512 else
513 urb_val |= SUSBCR_SPASB_EvenParity;
514 } else
515 urb_val |= SUSBCR_SPASB_NoParity;
516 tty->termios.c_cflag &= ~CMSPAR;
517 tty_encode_baud_rate(tty, speed, speed);
518
519 result = usb_control_msg(port->serial->dev,
520 usb_sndctrlpipe(port->serial->dev, 0),
521 SUSBCRequest_SetBaudRateParityAndStopBits,
522 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
523 urb_val,
524 0,
525 NULL,
526 0,
527 KOBIL_TIMEOUT
528 );
529 if (result) {
530 dev_err(&port->dev, "failed to update line settings: %d\n",
531 result);
532 }
533}
534
535static int kobil_ioctl(struct tty_struct *tty,
536 unsigned int cmd, unsigned long arg)
537{
538 struct usb_serial_port *port = tty->driver_data;
539 struct kobil_private *priv = usb_get_serial_port_data(port);
540 int result;
541
542 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
543 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
544 /* This device doesn't support ioctl calls */
545 return -ENOIOCTLCMD;
546
547 switch (cmd) {
548 case TCFLSH:
549 result = usb_control_msg(port->serial->dev,
550 usb_sndctrlpipe(port->serial->dev, 0),
551 SUSBCRequest_Misc,
552 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
553 SUSBCR_MSC_ResetAllQueues,
554 0,
555 NULL,
556 0,
557 KOBIL_TIMEOUT
558 );
559
560 dev_dbg(&port->dev,
561 "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
562 __func__, result);
563 return (result < 0) ? -EIO: 0;
564 default:
565 return -ENOIOCTLCMD;
566 }
567}
568
569module_usb_serial_driver(serial_drivers, id_table);
570
571MODULE_AUTHOR(DRIVER_AUTHOR);
572MODULE_DESCRIPTION(DRIVER_DESC);
573MODULE_LICENSE("GPL");
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");