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Commit | Line | Data |
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099dc4fb DS |
1 | /* |
2 | * IPWireless 3G PCMCIA Network Driver | |
3 | * | |
4 | * Original code | |
5 | * by Stephen Blackheath <stephen@blacksapphire.com>, | |
6 | * Ben Martel <benm@symmetric.co.nz> | |
7 | * | |
8 | * Copyrighted as follows: | |
9 | * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) | |
10 | * | |
11 | * Various driver changes and rewrites, port to new kernels | |
12 | * Copyright (C) 2006-2007 Jiri Kosina | |
13 | * | |
14 | * Misc code cleanups and updates | |
15 | * Copyright (C) 2007 David Sterba | |
16 | */ | |
17 | ||
099dc4fb DS |
18 | #include <linux/kernel.h> |
19 | #include <linux/module.h> | |
20 | #include <linux/mutex.h> | |
21 | #include <linux/ppp_defs.h> | |
22 | #include <linux/if.h> | |
4b32da2b | 23 | #include <linux/ppp-ioctl.h> |
099dc4fb DS |
24 | #include <linux/sched.h> |
25 | #include <linux/serial.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/tty.h> | |
28 | #include <linux/tty_driver.h> | |
29 | #include <linux/tty_flip.h> | |
30 | #include <linux/uaccess.h> | |
099dc4fb DS |
31 | |
32 | #include "tty.h" | |
33 | #include "network.h" | |
34 | #include "hardware.h" | |
35 | #include "main.h" | |
36 | ||
37 | #define IPWIRELESS_PCMCIA_START (0) | |
38 | #define IPWIRELESS_PCMCIA_MINORS (24) | |
39 | #define IPWIRELESS_PCMCIA_MINOR_RANGE (8) | |
40 | ||
41 | #define TTYTYPE_MODEM (0) | |
42 | #define TTYTYPE_MONITOR (1) | |
43 | #define TTYTYPE_RAS_RAW (2) | |
44 | ||
45 | struct ipw_tty { | |
7393af80 | 46 | struct tty_port port; |
099dc4fb DS |
47 | int index; |
48 | struct ipw_hardware *hardware; | |
49 | unsigned int channel_idx; | |
50 | unsigned int secondary_channel_idx; | |
51 | int tty_type; | |
52 | struct ipw_network *network; | |
099dc4fb DS |
53 | unsigned int control_lines; |
54 | struct mutex ipw_tty_mutex; | |
55 | int tx_bytes_queued; | |
56 | int closing; | |
57 | }; | |
58 | ||
59 | static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS]; | |
60 | ||
61 | static struct tty_driver *ipw_tty_driver; | |
62 | ||
63 | static char *tty_type_name(int tty_type) | |
64 | { | |
65 | static char *channel_names[] = { | |
66 | "modem", | |
67 | "monitor", | |
68 | "RAS-raw" | |
69 | }; | |
70 | ||
71 | return channel_names[tty_type]; | |
72 | } | |
73 | ||
ecaa3bda | 74 | static struct ipw_tty *get_tty(int index) |
099dc4fb | 75 | { |
ecaa3bda JS |
76 | /* |
77 | * The 'ras_raw' channel is only available when 'loopback' mode | |
78 | * is enabled. | |
79 | * Number of minor starts with 16 (_RANGE * _RAS_RAW). | |
80 | */ | |
81 | if (!ipwireless_loopback && index >= | |
82 | IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW) | |
099dc4fb | 83 | return NULL; |
ecaa3bda JS |
84 | |
85 | return ttys[index]; | |
099dc4fb DS |
86 | } |
87 | ||
88 | static int ipw_open(struct tty_struct *linux_tty, struct file *filp) | |
89 | { | |
ecaa3bda | 90 | struct ipw_tty *tty = get_tty(linux_tty->index); |
099dc4fb DS |
91 | |
92 | if (!tty) | |
93 | return -ENODEV; | |
94 | ||
95 | mutex_lock(&tty->ipw_tty_mutex); | |
7393af80 | 96 | if (tty->port.count == 0) |
099dc4fb DS |
97 | tty->tx_bytes_queued = 0; |
98 | ||
7393af80 | 99 | tty->port.count++; |
099dc4fb | 100 | |
19ef1b71 | 101 | tty->port.tty = linux_tty; |
099dc4fb | 102 | linux_tty->driver_data = tty; |
d6c53c0e | 103 | tty->port.low_latency = 1; |
099dc4fb DS |
104 | |
105 | if (tty->tty_type == TTYTYPE_MODEM) | |
106 | ipwireless_ppp_open(tty->network); | |
107 | ||
108 | mutex_unlock(&tty->ipw_tty_mutex); | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | static void do_ipw_close(struct ipw_tty *tty) | |
114 | { | |
7393af80 | 115 | tty->port.count--; |
099dc4fb | 116 | |
7393af80 | 117 | if (tty->port.count == 0) { |
19ef1b71 | 118 | struct tty_struct *linux_tty = tty->port.tty; |
099dc4fb DS |
119 | |
120 | if (linux_tty != NULL) { | |
19ef1b71 | 121 | tty->port.tty = NULL; |
099dc4fb DS |
122 | linux_tty->driver_data = NULL; |
123 | ||
124 | if (tty->tty_type == TTYTYPE_MODEM) | |
125 | ipwireless_ppp_close(tty->network); | |
126 | } | |
127 | } | |
128 | } | |
129 | ||
130 | static void ipw_hangup(struct tty_struct *linux_tty) | |
131 | { | |
132 | struct ipw_tty *tty = linux_tty->driver_data; | |
133 | ||
134 | if (!tty) | |
135 | return; | |
136 | ||
137 | mutex_lock(&tty->ipw_tty_mutex); | |
7393af80 | 138 | if (tty->port.count == 0) { |
099dc4fb DS |
139 | mutex_unlock(&tty->ipw_tty_mutex); |
140 | return; | |
141 | } | |
142 | ||
143 | do_ipw_close(tty); | |
144 | ||
145 | mutex_unlock(&tty->ipw_tty_mutex); | |
146 | } | |
147 | ||
148 | static void ipw_close(struct tty_struct *linux_tty, struct file *filp) | |
149 | { | |
150 | ipw_hangup(linux_tty); | |
151 | } | |
152 | ||
153 | /* Take data received from hardware, and send it out the tty */ | |
154 | void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, | |
155 | unsigned int length) | |
156 | { | |
099dc4fb DS |
157 | int work = 0; |
158 | ||
159 | mutex_lock(&tty->ipw_tty_mutex); | |
099dc4fb | 160 | |
7393af80 | 161 | if (!tty->port.count) { |
099dc4fb DS |
162 | mutex_unlock(&tty->ipw_tty_mutex); |
163 | return; | |
164 | } | |
165 | mutex_unlock(&tty->ipw_tty_mutex); | |
166 | ||
05c7cd39 | 167 | work = tty_insert_flip_string(&tty->port, data, length); |
099dc4fb DS |
168 | |
169 | if (work != length) | |
170 | printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME | |
171 | ": %d chars not inserted to flip buffer!\n", | |
172 | length - work); | |
173 | ||
099dc4fb | 174 | if (work) |
2e124b4a | 175 | tty_flip_buffer_push(&tty->port); |
099dc4fb DS |
176 | } |
177 | ||
178 | static void ipw_write_packet_sent_callback(void *callback_data, | |
179 | unsigned int packet_length) | |
180 | { | |
181 | struct ipw_tty *tty = callback_data; | |
182 | ||
183 | /* | |
184 | * Packet has been sent, so we subtract the number of bytes from our | |
185 | * tally of outstanding TX bytes. | |
186 | */ | |
187 | tty->tx_bytes_queued -= packet_length; | |
188 | } | |
189 | ||
190 | static int ipw_write(struct tty_struct *linux_tty, | |
191 | const unsigned char *buf, int count) | |
192 | { | |
193 | struct ipw_tty *tty = linux_tty->driver_data; | |
194 | int room, ret; | |
195 | ||
196 | if (!tty) | |
197 | return -ENODEV; | |
198 | ||
199 | mutex_lock(&tty->ipw_tty_mutex); | |
7393af80 | 200 | if (!tty->port.count) { |
099dc4fb DS |
201 | mutex_unlock(&tty->ipw_tty_mutex); |
202 | return -EINVAL; | |
203 | } | |
204 | ||
205 | room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; | |
206 | if (room < 0) | |
207 | room = 0; | |
208 | /* Don't allow caller to write any more than we have room for */ | |
209 | if (count > room) | |
210 | count = room; | |
211 | ||
212 | if (count == 0) { | |
213 | mutex_unlock(&tty->ipw_tty_mutex); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS, | |
ff3e990e | 218 | buf, count, |
099dc4fb DS |
219 | ipw_write_packet_sent_callback, tty); |
220 | if (ret == -1) { | |
221 | mutex_unlock(&tty->ipw_tty_mutex); | |
222 | return 0; | |
223 | } | |
224 | ||
225 | tty->tx_bytes_queued += count; | |
226 | mutex_unlock(&tty->ipw_tty_mutex); | |
227 | ||
228 | return count; | |
229 | } | |
230 | ||
231 | static int ipw_write_room(struct tty_struct *linux_tty) | |
232 | { | |
233 | struct ipw_tty *tty = linux_tty->driver_data; | |
234 | int room; | |
235 | ||
5aaa70a8 | 236 | /* FIXME: Exactly how is the tty object locked here .. */ |
099dc4fb DS |
237 | if (!tty) |
238 | return -ENODEV; | |
239 | ||
7393af80 | 240 | if (!tty->port.count) |
099dc4fb DS |
241 | return -EINVAL; |
242 | ||
243 | room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; | |
244 | if (room < 0) | |
245 | room = 0; | |
246 | ||
247 | return room; | |
248 | } | |
249 | ||
250 | static int ipwireless_get_serial_info(struct ipw_tty *tty, | |
251 | struct serial_struct __user *retinfo) | |
252 | { | |
253 | struct serial_struct tmp; | |
254 | ||
099dc4fb DS |
255 | memset(&tmp, 0, sizeof(tmp)); |
256 | tmp.type = PORT_UNKNOWN; | |
257 | tmp.line = tty->index; | |
099dc4fb | 258 | tmp.baud_base = 115200; |
fec4daec | 259 | |
099dc4fb DS |
260 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
261 | return -EFAULT; | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static int ipw_chars_in_buffer(struct tty_struct *linux_tty) | |
267 | { | |
268 | struct ipw_tty *tty = linux_tty->driver_data; | |
269 | ||
270 | if (!tty) | |
23198fda | 271 | return 0; |
099dc4fb | 272 | |
7393af80 | 273 | if (!tty->port.count) |
23198fda | 274 | return 0; |
099dc4fb DS |
275 | |
276 | return tty->tx_bytes_queued; | |
277 | } | |
278 | ||
279 | static int get_control_lines(struct ipw_tty *tty) | |
280 | { | |
281 | unsigned int my = tty->control_lines; | |
282 | unsigned int out = 0; | |
283 | ||
284 | if (my & IPW_CONTROL_LINE_RTS) | |
285 | out |= TIOCM_RTS; | |
286 | if (my & IPW_CONTROL_LINE_DTR) | |
287 | out |= TIOCM_DTR; | |
288 | if (my & IPW_CONTROL_LINE_CTS) | |
289 | out |= TIOCM_CTS; | |
290 | if (my & IPW_CONTROL_LINE_DSR) | |
291 | out |= TIOCM_DSR; | |
292 | if (my & IPW_CONTROL_LINE_DCD) | |
293 | out |= TIOCM_CD; | |
294 | ||
295 | return out; | |
296 | } | |
297 | ||
298 | static int set_control_lines(struct ipw_tty *tty, unsigned int set, | |
299 | unsigned int clear) | |
300 | { | |
301 | int ret; | |
302 | ||
303 | if (set & TIOCM_RTS) { | |
304 | ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1); | |
305 | if (ret) | |
306 | return ret; | |
307 | if (tty->secondary_channel_idx != -1) { | |
308 | ret = ipwireless_set_RTS(tty->hardware, | |
309 | tty->secondary_channel_idx, 1); | |
310 | if (ret) | |
311 | return ret; | |
312 | } | |
313 | } | |
314 | if (set & TIOCM_DTR) { | |
315 | ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1); | |
316 | if (ret) | |
317 | return ret; | |
318 | if (tty->secondary_channel_idx != -1) { | |
319 | ret = ipwireless_set_DTR(tty->hardware, | |
320 | tty->secondary_channel_idx, 1); | |
321 | if (ret) | |
322 | return ret; | |
323 | } | |
324 | } | |
325 | if (clear & TIOCM_RTS) { | |
326 | ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0); | |
327 | if (tty->secondary_channel_idx != -1) { | |
328 | ret = ipwireless_set_RTS(tty->hardware, | |
329 | tty->secondary_channel_idx, 0); | |
330 | if (ret) | |
331 | return ret; | |
332 | } | |
333 | } | |
334 | if (clear & TIOCM_DTR) { | |
335 | ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0); | |
336 | if (tty->secondary_channel_idx != -1) { | |
337 | ret = ipwireless_set_DTR(tty->hardware, | |
338 | tty->secondary_channel_idx, 0); | |
339 | if (ret) | |
340 | return ret; | |
341 | } | |
342 | } | |
343 | return 0; | |
344 | } | |
345 | ||
60b33c13 | 346 | static int ipw_tiocmget(struct tty_struct *linux_tty) |
099dc4fb DS |
347 | { |
348 | struct ipw_tty *tty = linux_tty->driver_data; | |
5aaa70a8 | 349 | /* FIXME: Exactly how is the tty object locked here .. */ |
099dc4fb DS |
350 | |
351 | if (!tty) | |
352 | return -ENODEV; | |
353 | ||
7393af80 | 354 | if (!tty->port.count) |
099dc4fb DS |
355 | return -EINVAL; |
356 | ||
357 | return get_control_lines(tty); | |
358 | } | |
359 | ||
360 | static int | |
20b9d177 | 361 | ipw_tiocmset(struct tty_struct *linux_tty, |
099dc4fb DS |
362 | unsigned int set, unsigned int clear) |
363 | { | |
364 | struct ipw_tty *tty = linux_tty->driver_data; | |
5aaa70a8 | 365 | /* FIXME: Exactly how is the tty object locked here .. */ |
099dc4fb DS |
366 | |
367 | if (!tty) | |
368 | return -ENODEV; | |
369 | ||
7393af80 | 370 | if (!tty->port.count) |
099dc4fb DS |
371 | return -EINVAL; |
372 | ||
373 | return set_control_lines(tty, set, clear); | |
374 | } | |
375 | ||
6caa76b7 | 376 | static int ipw_ioctl(struct tty_struct *linux_tty, |
099dc4fb DS |
377 | unsigned int cmd, unsigned long arg) |
378 | { | |
379 | struct ipw_tty *tty = linux_tty->driver_data; | |
380 | ||
381 | if (!tty) | |
382 | return -ENODEV; | |
383 | ||
7393af80 | 384 | if (!tty->port.count) |
099dc4fb DS |
385 | return -EINVAL; |
386 | ||
5aaa70a8 AC |
387 | /* FIXME: Exactly how is the tty object locked here .. */ |
388 | ||
099dc4fb DS |
389 | switch (cmd) { |
390 | case TIOCGSERIAL: | |
391 | return ipwireless_get_serial_info(tty, (void __user *) arg); | |
392 | ||
393 | case TIOCSSERIAL: | |
394 | return 0; /* Keeps the PCMCIA scripts happy. */ | |
395 | } | |
396 | ||
397 | if (tty->tty_type == TTYTYPE_MODEM) { | |
398 | switch (cmd) { | |
399 | case PPPIOCGCHAN: | |
400 | { | |
401 | int chan = ipwireless_ppp_channel_index( | |
402 | tty->network); | |
403 | ||
404 | if (chan < 0) | |
405 | return -ENODEV; | |
406 | if (put_user(chan, (int __user *) arg)) | |
407 | return -EFAULT; | |
408 | } | |
409 | return 0; | |
410 | ||
411 | case PPPIOCGUNIT: | |
412 | { | |
413 | int unit = ipwireless_ppp_unit_number( | |
414 | tty->network); | |
415 | ||
416 | if (unit < 0) | |
417 | return -ENODEV; | |
418 | if (put_user(unit, (int __user *) arg)) | |
419 | return -EFAULT; | |
420 | } | |
421 | return 0; | |
422 | ||
099dc4fb DS |
423 | case FIONREAD: |
424 | { | |
425 | int val = 0; | |
426 | ||
427 | if (put_user(val, (int __user *) arg)) | |
428 | return -EFAULT; | |
429 | } | |
430 | return 0; | |
5aaa70a8 AC |
431 | case TCFLSH: |
432 | return tty_perform_flush(linux_tty, arg); | |
099dc4fb DS |
433 | } |
434 | } | |
6caa76b7 | 435 | return -ENOIOCTLCMD; |
099dc4fb DS |
436 | } |
437 | ||
b498ada6 | 438 | static int add_tty(int j, |
099dc4fb DS |
439 | struct ipw_hardware *hardware, |
440 | struct ipw_network *network, int channel_idx, | |
441 | int secondary_channel_idx, int tty_type) | |
442 | { | |
443 | ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL); | |
444 | if (!ttys[j]) | |
445 | return -ENOMEM; | |
446 | ttys[j]->index = j; | |
447 | ttys[j]->hardware = hardware; | |
448 | ttys[j]->channel_idx = channel_idx; | |
449 | ttys[j]->secondary_channel_idx = secondary_channel_idx; | |
450 | ttys[j]->network = network; | |
451 | ttys[j]->tty_type = tty_type; | |
452 | mutex_init(&ttys[j]->ipw_tty_mutex); | |
7393af80 | 453 | tty_port_init(&ttys[j]->port); |
099dc4fb | 454 | |
734cc178 | 455 | tty_port_register_device(&ttys[j]->port, ipw_tty_driver, j, NULL); |
099dc4fb DS |
456 | ipwireless_associate_network_tty(network, channel_idx, ttys[j]); |
457 | ||
458 | if (secondary_channel_idx != -1) | |
459 | ipwireless_associate_network_tty(network, | |
460 | secondary_channel_idx, | |
461 | ttys[j]); | |
e6df3cce JS |
462 | /* check if we provide raw device (if loopback is enabled) */ |
463 | if (get_tty(j)) | |
464 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME | |
465 | ": registering %s device ttyIPWp%d\n", | |
466 | tty_type_name(tty_type), j); | |
467 | ||
099dc4fb DS |
468 | return 0; |
469 | } | |
470 | ||
471 | struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware, | |
b498ada6 | 472 | struct ipw_network *network) |
099dc4fb DS |
473 | { |
474 | int i, j; | |
475 | ||
476 | for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) { | |
477 | int allfree = 1; | |
478 | ||
479 | for (j = i; j < IPWIRELESS_PCMCIA_MINORS; | |
480 | j += IPWIRELESS_PCMCIA_MINOR_RANGE) | |
481 | if (ttys[j] != NULL) { | |
482 | allfree = 0; | |
483 | break; | |
484 | } | |
485 | ||
486 | if (allfree) { | |
487 | j = i; | |
488 | ||
b498ada6 | 489 | if (add_tty(j, hardware, network, |
099dc4fb DS |
490 | IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS, |
491 | TTYTYPE_MODEM)) | |
492 | return NULL; | |
493 | ||
494 | j += IPWIRELESS_PCMCIA_MINOR_RANGE; | |
b498ada6 | 495 | if (add_tty(j, hardware, network, |
099dc4fb DS |
496 | IPW_CHANNEL_DIALLER, -1, |
497 | TTYTYPE_MONITOR)) | |
498 | return NULL; | |
499 | ||
500 | j += IPWIRELESS_PCMCIA_MINOR_RANGE; | |
b498ada6 | 501 | if (add_tty(j, hardware, network, |
099dc4fb DS |
502 | IPW_CHANNEL_RAS, -1, |
503 | TTYTYPE_RAS_RAW)) | |
504 | return NULL; | |
505 | ||
099dc4fb DS |
506 | return ttys[i]; |
507 | } | |
508 | } | |
509 | return NULL; | |
510 | } | |
511 | ||
512 | /* | |
513 | * Must be called before ipwireless_network_free(). | |
514 | */ | |
515 | void ipwireless_tty_free(struct ipw_tty *tty) | |
516 | { | |
517 | int j; | |
518 | struct ipw_network *network = ttys[tty->index]->network; | |
519 | ||
520 | for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS; | |
521 | j += IPWIRELESS_PCMCIA_MINOR_RANGE) { | |
522 | struct ipw_tty *ttyj = ttys[j]; | |
523 | ||
524 | if (ttyj) { | |
525 | mutex_lock(&ttyj->ipw_tty_mutex); | |
e6df3cce JS |
526 | if (get_tty(j)) |
527 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME | |
528 | ": deregistering %s device ttyIPWp%d\n", | |
529 | tty_type_name(ttyj->tty_type), j); | |
099dc4fb | 530 | ttyj->closing = 1; |
19ef1b71 | 531 | if (ttyj->port.tty != NULL) { |
099dc4fb | 532 | mutex_unlock(&ttyj->ipw_tty_mutex); |
19ef1b71 | 533 | tty_vhangup(ttyj->port.tty); |
5aaa70a8 AC |
534 | /* FIXME: Exactly how is the tty object locked here |
535 | against a parallel ioctl etc */ | |
de3a60a3 JS |
536 | /* FIXME2: hangup does not mean all processes |
537 | * are gone */ | |
099dc4fb DS |
538 | mutex_lock(&ttyj->ipw_tty_mutex); |
539 | } | |
7393af80 | 540 | while (ttyj->port.count) |
099dc4fb DS |
541 | do_ipw_close(ttyj); |
542 | ipwireless_disassociate_network_ttys(network, | |
543 | ttyj->channel_idx); | |
544 | tty_unregister_device(ipw_tty_driver, j); | |
191c5f10 | 545 | tty_port_destroy(&ttyj->port); |
099dc4fb DS |
546 | ttys[j] = NULL; |
547 | mutex_unlock(&ttyj->ipw_tty_mutex); | |
548 | kfree(ttyj); | |
549 | } | |
550 | } | |
551 | } | |
552 | ||
1cceefd3 | 553 | static const struct tty_operations tty_ops = { |
099dc4fb DS |
554 | .open = ipw_open, |
555 | .close = ipw_close, | |
556 | .hangup = ipw_hangup, | |
557 | .write = ipw_write, | |
558 | .write_room = ipw_write_room, | |
559 | .ioctl = ipw_ioctl, | |
560 | .chars_in_buffer = ipw_chars_in_buffer, | |
561 | .tiocmget = ipw_tiocmget, | |
562 | .tiocmset = ipw_tiocmset, | |
563 | }; | |
564 | ||
565 | int ipwireless_tty_init(void) | |
566 | { | |
567 | int result; | |
568 | ||
569 | ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS); | |
570 | if (!ipw_tty_driver) | |
571 | return -ENOMEM; | |
572 | ||
099dc4fb DS |
573 | ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME; |
574 | ipw_tty_driver->name = "ttyIPWp"; | |
575 | ipw_tty_driver->major = 0; | |
576 | ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START; | |
577 | ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
578 | ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL; | |
579 | ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; | |
580 | ipw_tty_driver->init_termios = tty_std_termios; | |
581 | ipw_tty_driver->init_termios.c_cflag = | |
582 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
583 | ipw_tty_driver->init_termios.c_ispeed = 9600; | |
584 | ipw_tty_driver->init_termios.c_ospeed = 9600; | |
585 | tty_set_operations(ipw_tty_driver, &tty_ops); | |
586 | result = tty_register_driver(ipw_tty_driver); | |
587 | if (result) { | |
588 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME | |
589 | ": failed to register tty driver\n"); | |
590 | put_tty_driver(ipw_tty_driver); | |
591 | return result; | |
592 | } | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | void ipwireless_tty_release(void) | |
598 | { | |
599 | int ret; | |
600 | ||
601 | ret = tty_unregister_driver(ipw_tty_driver); | |
602 | put_tty_driver(ipw_tty_driver); | |
603 | if (ret != 0) | |
604 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME | |
605 | ": tty_unregister_driver failed with code %d\n", ret); | |
606 | } | |
607 | ||
608 | int ipwireless_tty_is_modem(struct ipw_tty *tty) | |
609 | { | |
610 | return tty->tty_type == TTYTYPE_MODEM; | |
611 | } | |
612 | ||
613 | void | |
614 | ipwireless_tty_notify_control_line_change(struct ipw_tty *tty, | |
615 | unsigned int channel_idx, | |
616 | unsigned int control_lines, | |
617 | unsigned int changed_mask) | |
618 | { | |
619 | unsigned int old_control_lines = tty->control_lines; | |
620 | ||
621 | tty->control_lines = (tty->control_lines & ~changed_mask) | |
622 | | (control_lines & changed_mask); | |
623 | ||
624 | /* | |
625 | * If DCD is de-asserted, we close the tty so pppd can tell that we | |
626 | * have gone offline. | |
627 | */ | |
628 | if ((old_control_lines & IPW_CONTROL_LINE_DCD) | |
629 | && !(tty->control_lines & IPW_CONTROL_LINE_DCD) | |
19ef1b71 JS |
630 | && tty->port.tty) { |
631 | tty_hangup(tty->port.tty); | |
099dc4fb DS |
632 | } |
633 | } | |
634 |