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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / usb / serial / cyberjack.c
blob290799ccbcf54980a41543fff53ec37263a678fc
1 /*
2 * REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver
3 *
4 * Copyright (C) 2001 REINER SCT
5 * Author: Matthias Bruestle
6 *
7 * Contact: support@reiner-sct.com (see MAINTAINERS)
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 * In case of problems, please write to the contact e-mail address
22 * mentioned above.
23 *
24 * Please note that later models of the cyberjack reader family are
25 * supported by a libusb-based userspace device driver.
26 *
27 * Homepage: http://www.reiner-sct.de/support/treiber_cyberjack.php#linux
28 */
29
30
31 #include <linux/kernel.h>
32 #include <linux/errno.h>
33 #include <linux/init.h>
34 #include <linux/slab.h>
35 #include <linux/tty.h>
36 #include <linux/tty_driver.h>
37 #include <linux/tty_flip.h>
38 #include <linux/module.h>
39 #include <linux/spinlock.h>
40 #include <linux/uaccess.h>
41 #include <linux/usb.h>
42 #include <linux/usb/serial.h>
43
44 #define CYBERJACK_LOCAL_BUF_SIZE 32
45
46 static int debug;
47
48 /*
49 * Version Information
50 */
51 #define DRIVER_VERSION "v1.01"
52 #define DRIVER_AUTHOR "Matthias Bruestle"
53 #define DRIVER_DESC "REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver"
54
55
56 #define CYBERJACK_VENDOR_ID 0x0C4B
57 #define CYBERJACK_PRODUCT_ID 0x0100
58
59 /* Function prototypes */
60 static int cyberjack_startup(struct usb_serial *serial);
61 static void cyberjack_disconnect(struct usb_serial *serial);
62 static void cyberjack_release(struct usb_serial *serial);
63 static int cyberjack_open(struct tty_struct *tty,
64 struct usb_serial_port *port);
65 static void cyberjack_close(struct usb_serial_port *port);
66 static int cyberjack_write(struct tty_struct *tty,
67 struct usb_serial_port *port, const unsigned char *buf, int count);
68 static int cyberjack_write_room(struct tty_struct *tty);
69 static void cyberjack_read_int_callback(struct urb *urb);
70 static void cyberjack_read_bulk_callback(struct urb *urb);
71 static void cyberjack_write_bulk_callback(struct urb *urb);
72
73 static const struct usb_device_id id_table[] = {
74 { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) },
75 { } /* Terminating entry */
76 };
77
78 MODULE_DEVICE_TABLE(usb, id_table);
79
80 static struct usb_driver cyberjack_driver = {
81 .name = "cyberjack",
82 .probe = usb_serial_probe,
83 .disconnect = usb_serial_disconnect,
84 .id_table = id_table,
85 .no_dynamic_id = 1,
86 };
87
88 static struct usb_serial_driver cyberjack_device = {
89 .driver = {
90 .owner = THIS_MODULE,
91 .name = "cyberjack",
92 },
93 .description = "Reiner SCT Cyberjack USB card reader",
94 .usb_driver = &cyberjack_driver,
95 .id_table = id_table,
96 .num_ports = 1,
97 .attach = cyberjack_startup,
98 .disconnect = cyberjack_disconnect,
99 .release = cyberjack_release,
100 .open = cyberjack_open,
101 .close = cyberjack_close,
102 .write = cyberjack_write,
103 .write_room = cyberjack_write_room,
104 .read_int_callback = cyberjack_read_int_callback,
105 .read_bulk_callback = cyberjack_read_bulk_callback,
106 .write_bulk_callback = cyberjack_write_bulk_callback,
107 };
108
109 struct cyberjack_private {
110 spinlock_t lock; /* Lock for SMP */
111 short rdtodo; /* Bytes still to read */
112 unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */
113 short wrfilled; /* Overall data size we already got */
114 short wrsent; /* Data already sent */
115 };
116
117 /* do some startup allocations not currently performed by usb_serial_probe() */
118 static int cyberjack_startup(struct usb_serial *serial)
119 {
120 struct cyberjack_private *priv;
121 int i;
122
123 dbg("%s", __func__);
124
125 /* allocate the private data structure */
126 priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL);
127 if (!priv)
128 return -ENOMEM;
129
130 /* set initial values */
131 spin_lock_init(&priv->lock);
132 priv->rdtodo = 0;
133 priv->wrfilled = 0;
134 priv->wrsent = 0;
135 usb_set_serial_port_data(serial->port[0], priv);
136
137 init_waitqueue_head(&serial->port[0]->write_wait);
138
139 for (i = 0; i < serial->num_ports; ++i) {
140 int result;
141 serial->port[i]->interrupt_in_urb->dev = serial->dev;
142 result = usb_submit_urb(serial->port[i]->interrupt_in_urb,
143 GFP_KERNEL);
144 if (result)
145 dev_err(&serial->dev->dev,
146 "usb_submit_urb(read int) failed\n");
147 dbg("%s - usb_submit_urb(int urb)", __func__);
148 }
149
150 return 0;
151 }
152
153 static void cyberjack_disconnect(struct usb_serial *serial)
154 {
155 int i;
156
157 dbg("%s", __func__);
158
159 for (i = 0; i < serial->num_ports; ++i)
160 usb_kill_urb(serial->port[i]->interrupt_in_urb);
161 }
162
163 static void cyberjack_release(struct usb_serial *serial)
164 {
165 int i;
166
167 dbg("%s", __func__);
168
169 for (i = 0; i < serial->num_ports; ++i) {
170 /* My special items, the standard routines free my urbs */
171 kfree(usb_get_serial_port_data(serial->port[i]));
172 }
173 }
174
175 static int cyberjack_open(struct tty_struct *tty,
176 struct usb_serial_port *port)
177 {
178 struct cyberjack_private *priv;
179 unsigned long flags;
180 int result = 0;
181
182 dbg("%s - port %d", __func__, port->number);
183
184 dbg("%s - usb_clear_halt", __func__);
185 usb_clear_halt(port->serial->dev, port->write_urb->pipe);
186
187 priv = usb_get_serial_port_data(port);
188 spin_lock_irqsave(&priv->lock, flags);
189 priv->rdtodo = 0;
190 priv->wrfilled = 0;
191 priv->wrsent = 0;
192 spin_unlock_irqrestore(&priv->lock, flags);
193
194 return result;
195 }
196
197 static void cyberjack_close(struct usb_serial_port *port)
198 {
199 dbg("%s - port %d", __func__, port->number);
200
201 if (port->serial->dev) {
202 /* shutdown any bulk reads that might be going on */
203 usb_kill_urb(port->write_urb);
204 usb_kill_urb(port->read_urb);
205 }
206 }
207
208 static int cyberjack_write(struct tty_struct *tty,
209 struct usb_serial_port *port, const unsigned char *buf, int count)
210 {
211 struct usb_serial *serial = port->serial;
212 struct cyberjack_private *priv = usb_get_serial_port_data(port);
213 unsigned long flags;
214 int result;
215 int wrexpected;
216
217 dbg("%s - port %d", __func__, port->number);
218
219 if (count == 0) {
220 dbg("%s - write request of 0 bytes", __func__);
221 return 0;
222 }
223
224 spin_lock_bh(&port->lock);
225 if (port->write_urb_busy) {
226 spin_unlock_bh(&port->lock);
227 dbg("%s - already writing", __func__);
228 return 0;
229 }
230 port->write_urb_busy = 1;
231 spin_unlock_bh(&port->lock);
232
233 spin_lock_irqsave(&priv->lock, flags);
234
235 if (count+priv->wrfilled > sizeof(priv->wrbuf)) {
236 /* To much data for buffer. Reset buffer. */
237 priv->wrfilled = 0;
238 port->write_urb_busy = 0;
239 spin_unlock_irqrestore(&priv->lock, flags);
240 return 0;
241 }
242
243 /* Copy data */
244 memcpy(priv->wrbuf + priv->wrfilled, buf, count);
245
246 usb_serial_debug_data(debug, &port->dev, __func__, count,
247 priv->wrbuf + priv->wrfilled);
248 priv->wrfilled += count;
249
250 if (priv->wrfilled >= 3) {
251 wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3;
252 dbg("%s - expected data: %d", __func__, wrexpected);
253 } else
254 wrexpected = sizeof(priv->wrbuf);
255
256 if (priv->wrfilled >= wrexpected) {
257 /* We have enough data to begin transmission */
258 int length;
259
260 dbg("%s - transmitting data (frame 1)", __func__);
261 length = (wrexpected > port->bulk_out_size) ?
262 port->bulk_out_size : wrexpected;
263
264 memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length);
265 priv->wrsent = length;
266
267 /* set up our urb */
268 usb_fill_bulk_urb(port->write_urb, serial->dev,
269 usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress),
270 port->write_urb->transfer_buffer, length,
271 ((serial->type->write_bulk_callback) ?
272 serial->type->write_bulk_callback :
273 cyberjack_write_bulk_callback),
274 port);
275
276 /* send the data out the bulk port */
277 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
278 if (result) {
279 dev_err(&port->dev,
280 "%s - failed submitting write urb, error %d",
281 __func__, result);
282 /* Throw away data. No better idea what to do with it. */
283 priv->wrfilled = 0;
284 priv->wrsent = 0;
285 spin_unlock_irqrestore(&priv->lock, flags);
286 port->write_urb_busy = 0;
287 return 0;
288 }
289
290 dbg("%s - priv->wrsent=%d", __func__, priv->wrsent);
291 dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled);
292
293 if (priv->wrsent >= priv->wrfilled) {
294 dbg("%s - buffer cleaned", __func__);
295 memset(priv->wrbuf, 0, sizeof(priv->wrbuf));
296 priv->wrfilled = 0;
297 priv->wrsent = 0;
298 }
299 }
300
301 spin_unlock_irqrestore(&priv->lock, flags);
302
303 return count;
304 }
305
306 static int cyberjack_write_room(struct tty_struct *tty)
307 {
308 return CYBERJACK_LOCAL_BUF_SIZE;
309 }
310
311 static void cyberjack_read_int_callback(struct urb *urb)
312 {
313 struct usb_serial_port *port = urb->context;
314 struct cyberjack_private *priv = usb_get_serial_port_data(port);
315 unsigned char *data = urb->transfer_buffer;
316 int status = urb->status;
317 int result;
318
319 dbg("%s - port %d", __func__, port->number);
320
321 /* the urb might have been killed. */
322 if (status)
323 return;
324
325 usb_serial_debug_data(debug, &port->dev, __func__,
326 urb->actual_length, data);
327
328 /* React only to interrupts signaling a bulk_in transfer */
329 if (urb->actual_length == 4 && data[0] == 0x01) {
330 short old_rdtodo;
331
332 /* This is a announcement of coming bulk_ins. */
333 unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3;
334
335 spin_lock(&priv->lock);
336
337 old_rdtodo = priv->rdtodo;
338
339 if (old_rdtodo + size < old_rdtodo) {
340 dbg("To many bulk_in urbs to do.");
341 spin_unlock(&priv->lock);
342 goto resubmit;
343 }
344
345 /* "+=" is probably more fault tollerant than "=" */
346 priv->rdtodo += size;
347
348 dbg("%s - rdtodo: %d", __func__, priv->rdtodo);
349
350 spin_unlock(&priv->lock);
351
352 if (!old_rdtodo) {
353 port->read_urb->dev = port->serial->dev;
354 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
355 if (result)
356 dev_err(&port->dev, "%s - failed resubmitting "
357 "read urb, error %d\n",
358 __func__, result);
359 dbg("%s - usb_submit_urb(read urb)", __func__);
360 }
361 }
362
363 resubmit:
364 port->interrupt_in_urb->dev = port->serial->dev;
365 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
366 if (result)
367 dev_err(&port->dev, "usb_submit_urb(read int) failed\n");
368 dbg("%s - usb_submit_urb(int urb)", __func__);
369 }
370
371 static void cyberjack_read_bulk_callback(struct urb *urb)
372 {
373 struct usb_serial_port *port = urb->context;
374 struct cyberjack_private *priv = usb_get_serial_port_data(port);
375 struct tty_struct *tty;
376 unsigned char *data = urb->transfer_buffer;
377 short todo;
378 int result;
379 int status = urb->status;
380
381 dbg("%s - port %d", __func__, port->number);
382
383 usb_serial_debug_data(debug, &port->dev, __func__,
384 urb->actual_length, data);
385 if (status) {
386 dbg("%s - nonzero read bulk status received: %d",
387 __func__, status);
388 return;
389 }
390
391 tty = tty_port_tty_get(&port->port);
392 if (!tty) {
393 dbg("%s - ignoring since device not open", __func__);
394 return;
395 }
396 if (urb->actual_length) {
397 tty_insert_flip_string(tty, data, urb->actual_length);
398 tty_flip_buffer_push(tty);
399 }
400 tty_kref_put(tty);
401
402 spin_lock(&priv->lock);
403
404 /* Reduce urbs to do by one. */
405 priv->rdtodo -= urb->actual_length;
406 /* Just to be sure */
407 if (priv->rdtodo < 0)
408 priv->rdtodo = 0;
409 todo = priv->rdtodo;
410
411 spin_unlock(&priv->lock);
412
413 dbg("%s - rdtodo: %d", __func__, todo);
414
415 /* Continue to read if we have still urbs to do. */
416 if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) {
417 port->read_urb->dev = port->serial->dev;
418 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
419 if (result)
420 dev_err(&port->dev, "%s - failed resubmitting read "
421 "urb, error %d\n", __func__, result);
422 dbg("%s - usb_submit_urb(read urb)", __func__);
423 }
424 }
425
426 static void cyberjack_write_bulk_callback(struct urb *urb)
427 {
428 struct usb_serial_port *port = urb->context;
429 struct cyberjack_private *priv = usb_get_serial_port_data(port);
430 int status = urb->status;
431
432 dbg("%s - port %d", __func__, port->number);
433
434 port->write_urb_busy = 0;
435 if (status) {
436 dbg("%s - nonzero write bulk status received: %d",
437 __func__, status);
438 return;
439 }
440
441 spin_lock(&priv->lock);
442
443 /* only do something if we have more data to send */
444 if (priv->wrfilled) {
445 int length, blksize, result;
446
447 dbg("%s - transmitting data (frame n)", __func__);
448
449 length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ?
450 port->bulk_out_size : (priv->wrfilled - priv->wrsent);
451
452 memcpy(port->write_urb->transfer_buffer,
453 priv->wrbuf + priv->wrsent, length);
454 priv->wrsent += length;
455
456 /* set up our urb */
457 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
458 usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress),
459 port->write_urb->transfer_buffer, length,
460 ((port->serial->type->write_bulk_callback) ?
461 port->serial->type->write_bulk_callback :
462 cyberjack_write_bulk_callback),
463 port);
464
465 /* send the data out the bulk port */
466 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
467 if (result) {
468 dev_err(&port->dev,
469 "%s - failed submitting write urb, error %d\n",
470 __func__, result);
471 /* Throw away data. No better idea what to do with it. */
472 priv->wrfilled = 0;
473 priv->wrsent = 0;
474 goto exit;
475 }
476
477 dbg("%s - priv->wrsent=%d", __func__, priv->wrsent);
478 dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled);
479
480 blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3;
481
482 if (priv->wrsent >= priv->wrfilled ||
483 priv->wrsent >= blksize) {
484 dbg("%s - buffer cleaned", __func__);
485 memset(priv->wrbuf, 0, sizeof(priv->wrbuf));
486 priv->wrfilled = 0;
487 priv->wrsent = 0;
488 }
489 }
490
491 exit:
492 spin_unlock(&priv->lock);
493 usb_serial_port_softint(port);
494 }
495
496 static int __init cyberjack_init(void)
497 {
498 int retval;
499 retval = usb_serial_register(&cyberjack_device);
500 if (retval)
501 goto failed_usb_serial_register;
502 retval = usb_register(&cyberjack_driver);
503 if (retval)
504 goto failed_usb_register;
505
506 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION " "
507 DRIVER_AUTHOR "\n");
508 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
509
510 return 0;
511 failed_usb_register:
512 usb_serial_deregister(&cyberjack_device);
513 failed_usb_serial_register:
514 return retval;
515 }
516
517 static void __exit cyberjack_exit(void)
518 {
519 usb_deregister(&cyberjack_driver);
520 usb_serial_deregister(&cyberjack_device);
521 }
522
523 module_init(cyberjack_init);
524 module_exit(cyberjack_exit);
525
526 MODULE_AUTHOR(DRIVER_AUTHOR);
527 MODULE_DESCRIPTION(DRIVER_DESC);
528 MODULE_VERSION(DRIVER_VERSION);
529 MODULE_LICENSE("GPL");
530
531 module_param(debug, bool, S_IRUGO | S_IWUSR);
532 MODULE_PARM_DESC(debug, "Debug enabled or not");
Tomato firmware and modifications.