Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/usb/serial/kobil_sct.c

  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 
 25 
 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 /* Function prototypes */
 54 static int kobil_port_probe(struct usb_serial_port *probe);
 55 static int kobil_port_remove(struct usb_serial_port *probe);
 56 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
 57 static void kobil_close(struct usb_serial_port *port);
 58 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 59                          const unsigned char *buf, int count);
 60 static int  kobil_write_room(struct tty_struct *tty);
 61 static int  kobil_ioctl(struct tty_struct *tty,
 62                         unsigned int cmd, unsigned long arg);
 63 static int  kobil_tiocmget(struct tty_struct *tty);
 64 static int  kobil_tiocmset(struct tty_struct *tty,
 65                            unsigned int set, unsigned int clear);
 66 static void kobil_read_int_callback(struct urb *urb);
 67 static void kobil_write_int_callback(struct urb *urb);
 68 static void kobil_set_termios(struct tty_struct *tty,
 69                         struct usb_serial_port *port, struct ktermios *old);
 70 static void kobil_init_termios(struct tty_struct *tty);
 71 
 72 static 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         { }                     /* Terminating entry */
 78 };
 79 MODULE_DEVICE_TABLE(usb, id_table);
 80 
 81 static 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 
104 static struct usb_serial_driver * const serial_drivers[] = {
105         &kobil_device, NULL
106 };
107 
108 struct kobil_private {
109         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
110         int filled;  /* index of the last char in buf */
111         int cur_pos; /* index of the next char to send in buf */
112         __u16 device_type;
113 };
114 
115 
116 static 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 
149 static 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 
159 static void kobil_init_termios(struct tty_struct *tty)
160 {
161         /* Default to echo off and other sane device settings */
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         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
166         tty->termios.c_oflag &= ~ONLCR;
167 }
168 
169 static 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         /* allocate memory for transfer buffer */
180         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
181         if (!transfer_buffer)
182                 return -ENOMEM;
183 
184         /* get hardware version */
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         /* get firmware version */
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                 /* Setting Baudrate, Parity and Stopbits */
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                 /* reset all queues */
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                 /* start reading (Adapter B 'cause PNP string) */
247                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
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 
256 static void kobil_close(struct usb_serial_port *port)
257 {
258         /* FIXME: Add rts/dtr methods */
259         usb_kill_urb(port->interrupt_out_urb);
260         usb_kill_urb(port->interrupt_in_urb);
261 }
262 
263 
264 static 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 
288 static void kobil_write_int_callback(struct urb *urb)
289 {
290 }
291 
292 
293 static 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         /* Copy data to buffer */
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         /* only send complete block. TWIN, KAAN SIM and adapter K
319            use the same protocol. */
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                 /* stop reading (except TWIN and KAAN SIM) */
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                         /* max 8 byte in one urb (endpoint size) */
331                         length = min(todo, port->interrupt_out_size);
332                         /* copy data to transfer buffer */
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, GFP_NOIO);
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                 /* start reading (except TWIN and KAAN SIM) */
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_NOIO);
354                         dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
355                 }
356         }
357         return count;
358 }
359 
360 
361 static int kobil_write_room(struct tty_struct *tty)
362 {
363         /* FIXME */
364         return 8;
365 }
366 
367 
368 static 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                 /* This device doesn't support ioctl calls */
380                 return -EINVAL;
381         }
382 
383         /* allocate memory for transfer buffer */
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, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
399                 __func__, result, transfer_buffer[0]);
400 
401         result = 0;
402         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
403                 result = TIOCM_DSR;
404         kfree(transfer_buffer);
405         return result;
406 }
407 
408 static int kobil_tiocmset(struct tty_struct *tty,
409                            unsigned int set, unsigned int clear)
410 {
411         struct usb_serial_port *port = tty->driver_data;
412         struct device *dev = &port->dev;
413         struct kobil_private *priv;
414         int result;
415         int dtr = 0;
416         int rts = 0;
417         unsigned char *transfer_buffer;
418         int transfer_buffer_length = 8;
419 
420         /* FIXME: locking ? */
421         priv = usb_get_serial_port_data(port);
422         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
423                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
424                 /* This device doesn't support ioctl calls */
425                 return -EINVAL;
426         }
427 
428         /* allocate memory for transfer buffer */
429         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
430         if (!transfer_buffer)
431                 return -ENOMEM;
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         kfree(transfer_buffer);
473         return (result < 0) ? result : 0;
474 }
475 
476 static 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                 /* 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         case 9600:
501                 urb_val = SUSBCR_SBR_9600;
502                 break;
503         }
504         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
505                                                         SUSBCR_SPASB_1StopBit;
506         if (c_cflag & PARENB) {
507                 if  (c_cflag & PARODD)
508                         urb_val |= SUSBCR_SPASB_OddParity;
509                 else
510                         urb_val |= SUSBCR_SPASB_EvenParity;
511         } else
512                 urb_val |= SUSBCR_SPASB_NoParity;
513         tty->termios.c_cflag &= ~CMSPAR;
514         tty_encode_baud_rate(tty, speed, speed);
515 
516         result = usb_control_msg(port->serial->dev,
517                   usb_sndctrlpipe(port->serial->dev, 0),
518                   SUSBCRequest_SetBaudRateParityAndStopBits,
519                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
520                   urb_val,
521                   0,
522                   NULL,
523                   0,
524                   KOBIL_TIMEOUT
525                 );
526 }
527 
528 static int kobil_ioctl(struct tty_struct *tty,
529                                         unsigned int cmd, unsigned long arg)
530 {
531         struct usb_serial_port *port = tty->driver_data;
532         struct kobil_private *priv = usb_get_serial_port_data(port);
533         unsigned char *transfer_buffer;
534         int transfer_buffer_length = 8;
535         int result;
536 
537         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
538                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
539                 /* This device doesn't support ioctl calls */
540                 return -ENOIOCTLCMD;
541 
542         switch (cmd) {
543         case TCFLSH:
544                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
545                 if (!transfer_buffer)
546                         return -ENOBUFS;
547 
548                 result = usb_control_msg(port->serial->dev,
549                           usb_sndctrlpipe(port->serial->dev, 0),
550                           SUSBCRequest_Misc,
551                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
552                           SUSBCR_MSC_ResetAllQueues,
553                           0,
554                           NULL,
555                           0,
556                           KOBIL_TIMEOUT
557                         );
558 
559                 dev_dbg(&port->dev,
560                         "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
561                         __func__, result);
562                 kfree(transfer_buffer);
563                 return (result < 0) ? -EIO: 0;
564         default:
565                 return -ENOIOCTLCMD;
566         }
567 }
568 
569 module_usb_serial_driver(serial_drivers, id_table);
570 
571 MODULE_AUTHOR(DRIVER_AUTHOR);
572 MODULE_DESCRIPTION(DRIVER_DESC);
573 MODULE_LICENSE("GPL");
574 

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