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Commit | Line | Data |
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1da177e4 LT |
1 | /* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $ |
2 | * | |
3 | * CAPI 2.0 Interface for Linux | |
4 | * | |
5 | * Copyright 1996 by Carsten Paeth <calle@calle.de> | |
6 | * | |
7 | * This software may be used and distributed according to the terms | |
8 | * of the GNU General Public License, incorporated herein by reference. | |
9 | * | |
10 | */ | |
11 | ||
1da177e4 LT |
12 | #include <linux/module.h> |
13 | #include <linux/errno.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/major.h> | |
16 | #include <linux/sched.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/fcntl.h> | |
19 | #include <linux/fs.h> | |
20 | #include <linux/signal.h> | |
9ea6e5d8 | 21 | #include <linux/mutex.h> |
1da177e4 | 22 | #include <linux/mm.h> |
a237f3bb | 23 | #include <linux/smp_lock.h> |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/wait.h> | |
1da177e4 | 26 | #include <linux/tty.h> |
1da177e4 LT |
27 | #include <linux/netdevice.h> |
28 | #include <linux/ppp_defs.h> | |
29 | #include <linux/if_ppp.h> | |
1da177e4 LT |
30 | #include <linux/skbuff.h> |
31 | #include <linux/proc_fs.h> | |
9a58a80a | 32 | #include <linux/seq_file.h> |
1da177e4 LT |
33 | #include <linux/poll.h> |
34 | #include <linux/capi.h> | |
35 | #include <linux/kernelcapi.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/device.h> | |
38 | #include <linux/moduleparam.h> | |
1da177e4 LT |
39 | #include <linux/isdn/capiutil.h> |
40 | #include <linux/isdn/capicmd.h> | |
90926f0e | 41 | |
1da177e4 | 42 | #include "capifs.h" |
1da177e4 | 43 | |
1da177e4 LT |
44 | MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); |
45 | MODULE_AUTHOR("Carsten Paeth"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
48 | #undef _DEBUG_REFCOUNT /* alloc/free and open/close debug */ | |
49 | #undef _DEBUG_TTYFUNCS /* call to tty_driver */ | |
50 | #undef _DEBUG_DATAFLOW /* data flow */ | |
51 | ||
52 | /* -------- driver information -------------------------------------- */ | |
53 | ||
56b22935 | 54 | static struct class *capi_class; |
408b664a | 55 | static int capi_major = 68; /* allocated */ |
501c87a9 JK |
56 | |
57 | module_param_named(major, capi_major, uint, 0); | |
58 | ||
1da177e4 | 59 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
501c87a9 | 60 | #define CAPINC_NR_PORTS 32 |
1da177e4 | 61 | #define CAPINC_MAX_PORTS 256 |
501c87a9 | 62 | |
408b664a | 63 | static int capi_ttyminors = CAPINC_NR_PORTS; |
1da177e4 | 64 | |
1da177e4 LT |
65 | module_param_named(ttyminors, capi_ttyminors, uint, 0); |
66 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
67 | ||
68 | /* -------- defines ------------------------------------------------- */ | |
69 | ||
70 | #define CAPINC_MAX_RECVQUEUE 10 | |
71 | #define CAPINC_MAX_SENDQUEUE 10 | |
72 | #define CAPI_MAX_BLKSIZE 2048 | |
73 | ||
74 | /* -------- data structures ----------------------------------------- */ | |
75 | ||
76 | struct capidev; | |
77 | struct capincci; | |
1da177e4 LT |
78 | struct capiminor; |
79 | ||
6aa65472 MB |
80 | struct datahandle_queue { |
81 | struct list_head list; | |
82 | u16 datahandle; | |
83 | }; | |
84 | ||
1da177e4 | 85 | struct capiminor { |
1da177e4 LT |
86 | struct capincci *nccip; |
87 | unsigned int minor; | |
90926f0e | 88 | struct dentry *capifs_dentry; |
1da177e4 LT |
89 | |
90 | struct capi20_appl *ap; | |
91 | u32 ncci; | |
92 | u16 datahandle; | |
93 | u16 msgid; | |
94 | ||
95 | struct tty_struct *tty; | |
96 | int ttyinstop; | |
97 | int ttyoutstop; | |
98 | struct sk_buff *ttyskb; | |
99 | atomic_t ttyopencount; | |
100 | ||
101 | struct sk_buff_head inqueue; | |
102 | int inbytes; | |
103 | struct sk_buff_head outqueue; | |
104 | int outbytes; | |
105 | ||
106 | /* transmit path */ | |
6aa65472 | 107 | struct list_head ackqueue; |
1da177e4 | 108 | int nack; |
6aa65472 | 109 | spinlock_t ackqlock; |
1da177e4 | 110 | }; |
1da177e4 | 111 | |
053b47ff MB |
112 | /* FIXME: The following lock is a sledgehammer-workaround to a |
113 | * locking issue with the capiminor (and maybe other) data structure(s). | |
114 | * Access to this data is done in a racy way and crashes the machine with | |
115 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
116 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
117 | * The correct (and scalable) fix for the issue seems to require | |
118 | * an API change to the drivers... . */ | |
119 | static DEFINE_SPINLOCK(workaround_lock); | |
120 | ||
1da177e4 | 121 | struct capincci { |
884f5c44 | 122 | struct list_head list; |
1da177e4 LT |
123 | u32 ncci; |
124 | struct capidev *cdev; | |
125 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
126 | struct capiminor *minorp; | |
127 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
128 | }; | |
129 | ||
130 | struct capidev { | |
131 | struct list_head list; | |
132 | struct capi20_appl ap; | |
133 | u16 errcode; | |
134 | unsigned userflags; | |
135 | ||
136 | struct sk_buff_head recvqueue; | |
137 | wait_queue_head_t recvwait; | |
138 | ||
884f5c44 | 139 | struct list_head nccis; |
1da177e4 | 140 | |
05b41494 | 141 | struct mutex lock; |
1da177e4 LT |
142 | }; |
143 | ||
144 | /* -------- global variables ---------------------------------------- */ | |
145 | ||
b8f433dc | 146 | static DEFINE_MUTEX(capidev_list_lock); |
1da177e4 LT |
147 | static LIST_HEAD(capidev_list); |
148 | ||
149 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
501c87a9 | 150 | |
81d17fe5 JK |
151 | static DEFINE_RWLOCK(capiminors_lock); |
152 | static struct capiminor **capiminors; | |
1da177e4 | 153 | |
40fb2d0d JK |
154 | static struct tty_driver *capinc_tty_driver; |
155 | ||
1da177e4 LT |
156 | /* -------- datahandles --------------------------------------------- */ |
157 | ||
501c87a9 | 158 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
1da177e4 | 159 | { |
6aa65472 MB |
160 | struct datahandle_queue *n; |
161 | unsigned long flags; | |
1da177e4 LT |
162 | |
163 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
164 | if (unlikely(!n)) { |
165 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
166 | return -1; | |
1da177e4 | 167 | } |
1da177e4 | 168 | n->datahandle = datahandle; |
6aa65472 MB |
169 | INIT_LIST_HEAD(&n->list); |
170 | spin_lock_irqsave(&mp->ackqlock, flags); | |
171 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 172 | mp->nack++; |
6aa65472 | 173 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
174 | return 0; |
175 | } | |
176 | ||
177 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
178 | { | |
6aa65472 MB |
179 | struct datahandle_queue *p, *tmp; |
180 | unsigned long flags; | |
1da177e4 | 181 | |
6aa65472 MB |
182 | spin_lock_irqsave(&mp->ackqlock, flags); |
183 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
184 | if (p->datahandle == datahandle) { | |
185 | list_del(&p->list); | |
1da177e4 LT |
186 | kfree(p); |
187 | mp->nack--; | |
6aa65472 | 188 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
189 | return 0; |
190 | } | |
191 | } | |
6aa65472 | 192 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
193 | return -1; |
194 | } | |
195 | ||
196 | static void capiminor_del_all_ack(struct capiminor *mp) | |
197 | { | |
6aa65472 MB |
198 | struct datahandle_queue *p, *tmp; |
199 | unsigned long flags; | |
1da177e4 | 200 | |
6aa65472 MB |
201 | spin_lock_irqsave(&mp->ackqlock, flags); |
202 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
203 | list_del(&p->list); | |
1da177e4 LT |
204 | kfree(p); |
205 | mp->nack--; | |
206 | } | |
6aa65472 | 207 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
208 | } |
209 | ||
210 | ||
211 | /* -------- struct capiminor ---------------------------------------- */ | |
212 | ||
213 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) | |
214 | { | |
81d17fe5 | 215 | struct capiminor *mp; |
40fb2d0d | 216 | struct device *dev; |
81d17fe5 | 217 | unsigned int minor; |
1da177e4 LT |
218 | unsigned long flags; |
219 | ||
54f0fad3 | 220 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
1da177e4 LT |
221 | if (!mp) { |
222 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
223 | return NULL; | |
224 | } | |
225 | ||
1da177e4 LT |
226 | mp->ap = ap; |
227 | mp->ncci = ncci; | |
228 | mp->msgid = 0; | |
229 | atomic_set(&mp->ttyopencount,0); | |
6aa65472 MB |
230 | INIT_LIST_HEAD(&mp->ackqueue); |
231 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
232 | |
233 | skb_queue_head_init(&mp->inqueue); | |
234 | skb_queue_head_init(&mp->outqueue); | |
235 | ||
81d17fe5 JK |
236 | /* Allocate the least unused minor number. */ |
237 | write_lock_irqsave(&capiminors_lock, flags); | |
238 | for (minor = 0; minor < capi_ttyminors; minor++) | |
239 | if (!capiminors[minor]) { | |
240 | capiminors[minor] = mp; | |
241 | break; | |
1da177e4 | 242 | } |
81d17fe5 | 243 | write_unlock_irqrestore(&capiminors_lock, flags); |
1da177e4 | 244 | |
81d17fe5 | 245 | if (minor == capi_ttyminors) { |
1da177e4 | 246 | printk(KERN_NOTICE "capi: out of minors\n"); |
40fb2d0d | 247 | goto err_out1; |
1da177e4 LT |
248 | } |
249 | ||
81d17fe5 JK |
250 | mp->minor = minor; |
251 | ||
40fb2d0d JK |
252 | dev = tty_register_device(capinc_tty_driver, minor, NULL); |
253 | if (IS_ERR(dev)) | |
254 | goto err_out2; | |
255 | ||
1da177e4 | 256 | return mp; |
40fb2d0d JK |
257 | |
258 | err_out2: | |
259 | write_lock_irqsave(&capiminors_lock, flags); | |
260 | capiminors[minor] = NULL; | |
261 | write_unlock_irqrestore(&capiminors_lock, flags); | |
262 | ||
263 | err_out1: | |
264 | kfree(mp); | |
265 | return NULL; | |
1da177e4 LT |
266 | } |
267 | ||
268 | static void capiminor_free(struct capiminor *mp) | |
269 | { | |
270 | unsigned long flags; | |
271 | ||
40fb2d0d JK |
272 | tty_unregister_device(capinc_tty_driver, mp->minor); |
273 | ||
81d17fe5 JK |
274 | write_lock_irqsave(&capiminors_lock, flags); |
275 | capiminors[mp->minor] = NULL; | |
276 | write_unlock_irqrestore(&capiminors_lock, flags); | |
1da177e4 | 277 | |
d46604e1 | 278 | kfree_skb(mp->ttyskb); |
1da177e4 LT |
279 | mp->ttyskb = NULL; |
280 | skb_queue_purge(&mp->inqueue); | |
281 | skb_queue_purge(&mp->outqueue); | |
282 | capiminor_del_all_ack(mp); | |
283 | kfree(mp); | |
284 | } | |
285 | ||
40fb2d0d | 286 | static struct capiminor *capiminor_get(unsigned int minor) |
1da177e4 | 287 | { |
81d17fe5 | 288 | struct capiminor *mp; |
1da177e4 | 289 | |
81d17fe5 JK |
290 | read_lock(&capiminors_lock); |
291 | mp = capiminors[minor]; | |
292 | read_unlock(&capiminors_lock); | |
293 | ||
294 | return mp; | |
1da177e4 | 295 | } |
1da177e4 LT |
296 | |
297 | /* -------- struct capincci ----------------------------------------- */ | |
298 | ||
501c87a9 | 299 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
1da177e4 | 300 | { |
501c87a9 | 301 | struct capiminor *mp; |
e95ac143 | 302 | dev_t device; |
1da177e4 | 303 | |
501c87a9 JK |
304 | if (!(cdev->userflags & CAPIFLAG_HIGHJACKING)) |
305 | return; | |
306 | ||
307 | mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci); | |
1da177e4 LT |
308 | if (mp) { |
309 | mp->nccip = np; | |
310 | #ifdef _DEBUG_REFCOUNT | |
311 | printk(KERN_DEBUG "set mp->nccip\n"); | |
312 | #endif | |
e95ac143 JK |
313 | device = MKDEV(capinc_tty_driver->major, mp->minor); |
314 | mp->capifs_dentry = capifs_new_ncci(mp->minor, device); | |
1da177e4 | 315 | } |
501c87a9 JK |
316 | } |
317 | ||
318 | static void capincci_free_minor(struct capincci *np) | |
319 | { | |
320 | struct capiminor *mp = np->minorp; | |
321 | ||
322 | if (mp) { | |
323 | capifs_free_ncci(mp->capifs_dentry); | |
324 | if (mp->tty) { | |
325 | mp->nccip = NULL; | |
326 | #ifdef _DEBUG_REFCOUNT | |
327 | printk(KERN_DEBUG "reset mp->nccip\n"); | |
328 | #endif | |
329 | tty_hangup(mp->tty); | |
330 | } else { | |
331 | capiminor_free(mp); | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
336 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
337 | { | |
338 | struct capiminor *mp = np->minorp; | |
339 | ||
340 | return mp ? atomic_read(&mp->ttyopencount) : 0; | |
341 | } | |
342 | ||
343 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
344 | ||
345 | static inline void | |
346 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } | |
347 | static inline void capincci_free_minor(struct capincci *np) { } | |
348 | ||
349 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
350 | { | |
351 | return 0; | |
352 | } | |
353 | ||
354 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
355 | ||
356 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) | |
357 | { | |
884f5c44 | 358 | struct capincci *np; |
501c87a9 | 359 | |
54f0fad3 | 360 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
501c87a9 JK |
361 | if (!np) |
362 | return NULL; | |
363 | np->ncci = ncci; | |
364 | np->cdev = cdev; | |
365 | ||
366 | capincci_alloc_minor(cdev, np); | |
367 | ||
884f5c44 JK |
368 | list_add_tail(&np->list, &cdev->nccis); |
369 | ||
370 | return np; | |
1da177e4 LT |
371 | } |
372 | ||
373 | static void capincci_free(struct capidev *cdev, u32 ncci) | |
374 | { | |
884f5c44 | 375 | struct capincci *np, *tmp; |
1da177e4 | 376 | |
884f5c44 | 377 | list_for_each_entry_safe(np, tmp, &cdev->nccis, list) |
1da177e4 | 378 | if (ncci == 0xffffffff || np->ncci == ncci) { |
501c87a9 | 379 | capincci_free_minor(np); |
884f5c44 | 380 | list_del(&np->list); |
1da177e4 | 381 | kfree(np); |
1da177e4 | 382 | } |
1da177e4 LT |
383 | } |
384 | ||
385 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) | |
386 | { | |
884f5c44 | 387 | struct capincci *np; |
1da177e4 | 388 | |
884f5c44 JK |
389 | list_for_each_entry(np, &cdev->nccis, list) |
390 | if (np->ncci == ncci) | |
391 | return np; | |
392 | return NULL; | |
1da177e4 LT |
393 | } |
394 | ||
1da177e4 LT |
395 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
396 | /* -------- handle data queue --------------------------------------- */ | |
397 | ||
398 | static struct sk_buff * | |
399 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) | |
400 | { | |
401 | struct sk_buff *nskb; | |
402 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC); | |
403 | if (nskb) { | |
404 | u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2); | |
405 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); | |
406 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); | |
407 | capimsg_setu16(s, 2, mp->ap->applid); | |
408 | capimsg_setu8 (s, 4, CAPI_DATA_B3); | |
409 | capimsg_setu8 (s, 5, CAPI_RESP); | |
410 | capimsg_setu16(s, 6, mp->msgid++); | |
411 | capimsg_setu32(s, 8, mp->ncci); | |
412 | capimsg_setu16(s, 12, datahandle); | |
413 | } | |
414 | return nskb; | |
415 | } | |
416 | ||
417 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) | |
418 | { | |
419 | struct sk_buff *nskb; | |
420 | int datalen; | |
421 | u16 errcode, datahandle; | |
422 | struct tty_ldisc *ld; | |
423 | ||
424 | datalen = skb->len - CAPIMSG_LEN(skb->data); | |
425 | if (mp->tty == NULL) | |
426 | { | |
427 | #ifdef _DEBUG_DATAFLOW | |
428 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
429 | #endif | |
430 | return -1; | |
431 | } | |
432 | ||
433 | ld = tty_ldisc_ref(mp->tty); | |
434 | if (ld == NULL) | |
435 | return -1; | |
a352def2 | 436 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
437 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
438 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
439 | #endif | |
440 | goto bad; | |
441 | } | |
442 | if (mp->ttyinstop) { | |
443 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
444 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
445 | #endif | |
446 | goto bad; | |
447 | } | |
33f0f88f | 448 | if (mp->tty->receive_room < datalen) { |
1da177e4 LT |
449 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
450 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
451 | #endif | |
452 | goto bad; | |
453 | } | |
2f9e9b6d | 454 | if ((nskb = gen_data_b3_resp_for(mp, skb)) == NULL) { |
1da177e4 LT |
455 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
456 | goto bad; | |
457 | } | |
458 | datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4); | |
459 | errcode = capi20_put_message(mp->ap, nskb); | |
460 | if (errcode != CAPI_NOERROR) { | |
461 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", | |
462 | errcode); | |
463 | kfree_skb(nskb); | |
464 | goto bad; | |
465 | } | |
466 | (void)skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
467 | #ifdef _DEBUG_DATAFLOW | |
468 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
469 | datahandle, skb->len); | |
470 | #endif | |
a352def2 | 471 | ld->ops->receive_buf(mp->tty, skb->data, NULL, skb->len); |
1da177e4 LT |
472 | kfree_skb(skb); |
473 | tty_ldisc_deref(ld); | |
474 | return 0; | |
475 | bad: | |
476 | tty_ldisc_deref(ld); | |
477 | return -1; | |
478 | } | |
479 | ||
480 | static void handle_minor_recv(struct capiminor *mp) | |
481 | { | |
482 | struct sk_buff *skb; | |
2f9e9b6d | 483 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) { |
1da177e4 LT |
484 | unsigned int len = skb->len; |
485 | mp->inbytes -= len; | |
486 | if (handle_recv_skb(mp, skb) < 0) { | |
487 | skb_queue_head(&mp->inqueue, skb); | |
488 | mp->inbytes += len; | |
489 | return; | |
490 | } | |
491 | } | |
492 | } | |
493 | ||
494 | static int handle_minor_send(struct capiminor *mp) | |
495 | { | |
496 | struct sk_buff *skb; | |
497 | u16 len; | |
498 | int count = 0; | |
499 | u16 errcode; | |
500 | u16 datahandle; | |
501 | ||
502 | if (mp->tty && mp->ttyoutstop) { | |
503 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
504 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
505 | #endif | |
506 | return 0; | |
507 | } | |
508 | ||
2f9e9b6d | 509 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
1da177e4 LT |
510 | datahandle = mp->datahandle; |
511 | len = (u16)skb->len; | |
512 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
513 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
514 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
515 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
516 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
517 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
518 | capimsg_setu16(skb->data, 6, mp->msgid++); | |
519 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ | |
5e6c20a9 | 520 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
521 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
522 | capimsg_setu16(skb->data, 18, datahandle); | |
523 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
524 | ||
501c87a9 | 525 | if (capiminor_add_ack(mp, datahandle) < 0) { |
1da177e4 LT |
526 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
527 | skb_queue_head(&mp->outqueue, skb); | |
528 | return count; | |
529 | } | |
530 | errcode = capi20_put_message(mp->ap, skb); | |
531 | if (errcode == CAPI_NOERROR) { | |
532 | mp->datahandle++; | |
533 | count++; | |
534 | mp->outbytes -= len; | |
535 | #ifdef _DEBUG_DATAFLOW | |
536 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
537 | datahandle, len); | |
538 | #endif | |
539 | continue; | |
540 | } | |
541 | capiminor_del_ack(mp, datahandle); | |
542 | ||
543 | if (errcode == CAPI_SENDQUEUEFULL) { | |
544 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
545 | skb_queue_head(&mp->outqueue, skb); | |
546 | break; | |
547 | } | |
548 | ||
549 | /* ups, drop packet */ | |
550 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
551 | mp->outbytes -= len; | |
552 | kfree_skb(skb); | |
553 | } | |
554 | return count; | |
555 | } | |
556 | ||
557 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
558 | /* -------- function called by lower level -------------------------- */ | |
559 | ||
560 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
561 | { | |
562 | struct capidev *cdev = ap->private; | |
563 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
564 | struct capiminor *mp; | |
565 | u16 datahandle; | |
566 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
567 | struct capincci *np; | |
053b47ff | 568 | unsigned long flags; |
1da177e4 | 569 | |
05b41494 JK |
570 | mutex_lock(&cdev->lock); |
571 | ||
1da177e4 LT |
572 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
573 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
05b41494 | 574 | if ((info & 0xff00) == 0) |
1da177e4 | 575 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
1da177e4 | 576 | } |
05b41494 | 577 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
1da177e4 | 578 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 579 | |
053b47ff | 580 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
581 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
582 | skb_queue_tail(&cdev->recvqueue, skb); | |
583 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 584 | goto unlock_out; |
1da177e4 | 585 | } |
05b41494 JK |
586 | |
587 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); | |
1da177e4 LT |
588 | if (!np) { |
589 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
590 | skb_queue_tail(&cdev->recvqueue, skb); | |
591 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 592 | goto unlock_out; |
1da177e4 | 593 | } |
501c87a9 | 594 | |
1da177e4 LT |
595 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
596 | skb_queue_tail(&cdev->recvqueue, skb); | |
597 | wake_up_interruptible(&cdev->recvwait); | |
501c87a9 | 598 | |
1da177e4 | 599 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
501c87a9 | 600 | |
1da177e4 LT |
601 | mp = np->minorp; |
602 | if (!mp) { | |
603 | skb_queue_tail(&cdev->recvqueue, skb); | |
604 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 605 | goto unlock_out; |
1da177e4 | 606 | } |
1da177e4 | 607 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
1da177e4 LT |
608 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); |
609 | #ifdef _DEBUG_DATAFLOW | |
610 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
611 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
612 | #endif | |
613 | skb_queue_tail(&mp->inqueue, skb); | |
614 | mp->inbytes += skb->len; | |
615 | handle_minor_recv(mp); | |
616 | ||
617 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
618 | ||
619 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
620 | #ifdef _DEBUG_DATAFLOW | |
621 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
622 | datahandle, | |
623 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
624 | #endif | |
625 | kfree_skb(skb); | |
626 | (void)capiminor_del_ack(mp, datahandle); | |
627 | if (mp->tty) | |
628 | tty_wakeup(mp->tty); | |
629 | (void)handle_minor_send(mp); | |
630 | ||
631 | } else { | |
632 | /* ups, let capi application handle it :-) */ | |
633 | skb_queue_tail(&cdev->recvqueue, skb); | |
634 | wake_up_interruptible(&cdev->recvwait); | |
635 | } | |
636 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
501c87a9 | 637 | |
05b41494 | 638 | unlock_out: |
053b47ff | 639 | spin_unlock_irqrestore(&workaround_lock, flags); |
05b41494 | 640 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
641 | } |
642 | ||
643 | /* -------- file_operations for capidev ----------------------------- */ | |
644 | ||
645 | static ssize_t | |
646 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
647 | { | |
648 | struct capidev *cdev = (struct capidev *)file->private_data; | |
649 | struct sk_buff *skb; | |
650 | size_t copied; | |
28a1dbb6 | 651 | int err; |
1da177e4 LT |
652 | |
653 | if (!cdev->ap.applid) | |
654 | return -ENODEV; | |
655 | ||
28a1dbb6 JK |
656 | skb = skb_dequeue(&cdev->recvqueue); |
657 | if (!skb) { | |
1da177e4 LT |
658 | if (file->f_flags & O_NONBLOCK) |
659 | return -EAGAIN; | |
28a1dbb6 JK |
660 | err = wait_event_interruptible(cdev->recvwait, |
661 | (skb = skb_dequeue(&cdev->recvqueue))); | |
662 | if (err) | |
663 | return err; | |
1da177e4 LT |
664 | } |
665 | if (skb->len > count) { | |
666 | skb_queue_head(&cdev->recvqueue, skb); | |
667 | return -EMSGSIZE; | |
668 | } | |
669 | if (copy_to_user(buf, skb->data, skb->len)) { | |
670 | skb_queue_head(&cdev->recvqueue, skb); | |
671 | return -EFAULT; | |
672 | } | |
673 | copied = skb->len; | |
674 | ||
675 | kfree_skb(skb); | |
676 | ||
677 | return copied; | |
678 | } | |
679 | ||
680 | static ssize_t | |
681 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
682 | { | |
683 | struct capidev *cdev = (struct capidev *)file->private_data; | |
684 | struct sk_buff *skb; | |
685 | u16 mlen; | |
686 | ||
687 | if (!cdev->ap.applid) | |
688 | return -ENODEV; | |
689 | ||
690 | skb = alloc_skb(count, GFP_USER); | |
691 | if (!skb) | |
692 | return -ENOMEM; | |
693 | ||
694 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
695 | kfree_skb(skb); | |
696 | return -EFAULT; | |
697 | } | |
698 | mlen = CAPIMSG_LEN(skb->data); | |
699 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
700 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
701 | kfree_skb(skb); | |
702 | return -EINVAL; | |
703 | } | |
704 | } else { | |
705 | if (mlen != count) { | |
706 | kfree_skb(skb); | |
707 | return -EINVAL; | |
708 | } | |
709 | } | |
710 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
711 | ||
712 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
05b41494 | 713 | mutex_lock(&cdev->lock); |
1da177e4 | 714 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 715 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
716 | } |
717 | ||
718 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
719 | ||
720 | if (cdev->errcode) { | |
721 | kfree_skb(skb); | |
722 | return -EIO; | |
723 | } | |
724 | return count; | |
725 | } | |
726 | ||
727 | static unsigned int | |
728 | capi_poll(struct file *file, poll_table * wait) | |
729 | { | |
730 | struct capidev *cdev = (struct capidev *)file->private_data; | |
731 | unsigned int mask = 0; | |
732 | ||
733 | if (!cdev->ap.applid) | |
734 | return POLLERR; | |
735 | ||
736 | poll_wait(file, &(cdev->recvwait), wait); | |
737 | mask = POLLOUT | POLLWRNORM; | |
738 | if (!skb_queue_empty(&cdev->recvqueue)) | |
739 | mask |= POLLIN | POLLRDNORM; | |
740 | return mask; | |
741 | } | |
742 | ||
743 | static int | |
744 | capi_ioctl(struct inode *inode, struct file *file, | |
745 | unsigned int cmd, unsigned long arg) | |
746 | { | |
747 | struct capidev *cdev = file->private_data; | |
1da177e4 LT |
748 | capi_ioctl_struct data; |
749 | int retval = -EINVAL; | |
750 | void __user *argp = (void __user *)arg; | |
751 | ||
752 | switch (cmd) { | |
753 | case CAPI_REGISTER: | |
05b41494 | 754 | mutex_lock(&cdev->lock); |
1da177e4 | 755 | |
05b41494 JK |
756 | if (cdev->ap.applid) { |
757 | retval = -EEXIST; | |
758 | goto register_out; | |
759 | } | |
760 | if (copy_from_user(&cdev->ap.rparam, argp, | |
761 | sizeof(struct capi_register_params))) { | |
762 | retval = -EFAULT; | |
763 | goto register_out; | |
764 | } | |
765 | cdev->ap.private = cdev; | |
766 | cdev->ap.recv_message = capi_recv_message; | |
767 | cdev->errcode = capi20_register(&cdev->ap); | |
768 | retval = (int)cdev->ap.applid; | |
769 | if (cdev->errcode) { | |
770 | cdev->ap.applid = 0; | |
771 | retval = -EIO; | |
1da177e4 | 772 | } |
05b41494 JK |
773 | |
774 | register_out: | |
775 | mutex_unlock(&cdev->lock); | |
776 | return retval; | |
1da177e4 LT |
777 | |
778 | case CAPI_GET_VERSION: | |
779 | { | |
780 | if (copy_from_user(&data.contr, argp, | |
781 | sizeof(data.contr))) | |
782 | return -EFAULT; | |
783 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
784 | if (cdev->errcode) | |
785 | return -EIO; | |
786 | if (copy_to_user(argp, &data.version, | |
787 | sizeof(data.version))) | |
788 | return -EFAULT; | |
789 | } | |
790 | return 0; | |
791 | ||
792 | case CAPI_GET_SERIAL: | |
793 | { | |
794 | if (copy_from_user(&data.contr, argp, | |
795 | sizeof(data.contr))) | |
796 | return -EFAULT; | |
797 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
798 | if (cdev->errcode) | |
799 | return -EIO; | |
800 | if (copy_to_user(argp, data.serial, | |
801 | sizeof(data.serial))) | |
802 | return -EFAULT; | |
803 | } | |
804 | return 0; | |
805 | case CAPI_GET_PROFILE: | |
806 | { | |
807 | if (copy_from_user(&data.contr, argp, | |
808 | sizeof(data.contr))) | |
809 | return -EFAULT; | |
810 | ||
811 | if (data.contr == 0) { | |
812 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
813 | if (cdev->errcode) | |
814 | return -EIO; | |
815 | ||
816 | retval = copy_to_user(argp, | |
817 | &data.profile.ncontroller, | |
818 | sizeof(data.profile.ncontroller)); | |
819 | ||
820 | } else { | |
821 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
822 | if (cdev->errcode) | |
823 | return -EIO; | |
824 | ||
825 | retval = copy_to_user(argp, &data.profile, | |
826 | sizeof(data.profile)); | |
827 | } | |
828 | if (retval) | |
829 | return -EFAULT; | |
830 | } | |
831 | return 0; | |
832 | ||
833 | case CAPI_GET_MANUFACTURER: | |
834 | { | |
835 | if (copy_from_user(&data.contr, argp, | |
836 | sizeof(data.contr))) | |
837 | return -EFAULT; | |
838 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
839 | if (cdev->errcode) | |
840 | return -EIO; | |
841 | ||
842 | if (copy_to_user(argp, data.manufacturer, | |
843 | sizeof(data.manufacturer))) | |
844 | return -EFAULT; | |
845 | ||
846 | } | |
847 | return 0; | |
848 | case CAPI_GET_ERRCODE: | |
849 | data.errcode = cdev->errcode; | |
850 | cdev->errcode = CAPI_NOERROR; | |
851 | if (arg) { | |
852 | if (copy_to_user(argp, &data.errcode, | |
853 | sizeof(data.errcode))) | |
854 | return -EFAULT; | |
855 | } | |
856 | return data.errcode; | |
857 | ||
858 | case CAPI_INSTALLED: | |
859 | if (capi20_isinstalled() == CAPI_NOERROR) | |
860 | return 0; | |
861 | return -ENXIO; | |
862 | ||
863 | case CAPI_MANUFACTURER_CMD: | |
864 | { | |
865 | struct capi_manufacturer_cmd mcmd; | |
866 | if (!capable(CAP_SYS_ADMIN)) | |
867 | return -EPERM; | |
868 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
869 | return -EFAULT; | |
870 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
871 | } | |
872 | return 0; | |
873 | ||
874 | case CAPI_SET_FLAGS: | |
05b41494 JK |
875 | case CAPI_CLR_FLAGS: { |
876 | unsigned userflags; | |
877 | ||
878 | if (copy_from_user(&userflags, argp, sizeof(userflags))) | |
879 | return -EFAULT; | |
1da177e4 | 880 | |
05b41494 JK |
881 | mutex_lock(&cdev->lock); |
882 | if (cmd == CAPI_SET_FLAGS) | |
883 | cdev->userflags |= userflags; | |
884 | else | |
885 | cdev->userflags &= ~userflags; | |
886 | mutex_unlock(&cdev->lock); | |
887 | return 0; | |
888 | } | |
1da177e4 LT |
889 | case CAPI_GET_FLAGS: |
890 | if (copy_to_user(argp, &cdev->userflags, | |
891 | sizeof(cdev->userflags))) | |
892 | return -EFAULT; | |
893 | return 0; | |
894 | ||
05b41494 JK |
895 | case CAPI_NCCI_OPENCOUNT: { |
896 | struct capincci *nccip; | |
897 | unsigned ncci; | |
898 | int count = 0; | |
1da177e4 | 899 | |
05b41494 JK |
900 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
901 | return -EFAULT; | |
902 | ||
903 | mutex_lock(&cdev->lock); | |
904 | nccip = capincci_find(cdev, (u32)ncci); | |
905 | if (nccip) | |
906 | count = capincci_minor_opencount(nccip); | |
907 | mutex_unlock(&cdev->lock); | |
908 | return count; | |
909 | } | |
1da177e4 LT |
910 | |
911 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
05b41494 JK |
912 | case CAPI_NCCI_GETUNIT: { |
913 | struct capincci *nccip; | |
914 | struct capiminor *mp; | |
915 | unsigned ncci; | |
916 | int unit = -ESRCH; | |
917 | ||
918 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
919 | return -EFAULT; | |
920 | ||
921 | mutex_lock(&cdev->lock); | |
922 | nccip = capincci_find(cdev, (u32)ncci); | |
923 | if (nccip) { | |
924 | mp = nccip->minorp; | |
925 | if (mp) | |
926 | unit = mp->minor; | |
1da177e4 | 927 | } |
05b41494 JK |
928 | mutex_unlock(&cdev->lock); |
929 | return unit; | |
930 | } | |
1da177e4 | 931 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
05b41494 JK |
932 | |
933 | default: | |
934 | return -EINVAL; | |
1da177e4 | 935 | } |
1da177e4 LT |
936 | } |
937 | ||
eca39dd8 | 938 | static int capi_open(struct inode *inode, struct file *file) |
1da177e4 | 939 | { |
eca39dd8 JK |
940 | struct capidev *cdev; |
941 | ||
942 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); | |
943 | if (!cdev) | |
944 | return -ENOMEM; | |
945 | ||
05b41494 | 946 | mutex_init(&cdev->lock); |
eca39dd8 JK |
947 | skb_queue_head_init(&cdev->recvqueue); |
948 | init_waitqueue_head(&cdev->recvwait); | |
884f5c44 | 949 | INIT_LIST_HEAD(&cdev->nccis); |
eca39dd8 JK |
950 | file->private_data = cdev; |
951 | ||
952 | mutex_lock(&capidev_list_lock); | |
953 | list_add_tail(&cdev->list, &capidev_list); | |
954 | mutex_unlock(&capidev_list_lock); | |
955 | ||
956 | return nonseekable_open(inode, file); | |
1da177e4 LT |
957 | } |
958 | ||
eca39dd8 | 959 | static int capi_release(struct inode *inode, struct file *file) |
1da177e4 | 960 | { |
eca39dd8 | 961 | struct capidev *cdev = file->private_data; |
1da177e4 | 962 | |
eca39dd8 JK |
963 | mutex_lock(&capidev_list_lock); |
964 | list_del(&cdev->list); | |
965 | mutex_unlock(&capidev_list_lock); | |
966 | ||
05b41494 | 967 | if (cdev->ap.applid) |
eca39dd8 | 968 | capi20_release(&cdev->ap); |
eca39dd8 | 969 | skb_queue_purge(&cdev->recvqueue); |
eca39dd8 | 970 | capincci_free(cdev, 0xffffffff); |
eca39dd8 JK |
971 | |
972 | kfree(cdev); | |
1da177e4 LT |
973 | return 0; |
974 | } | |
975 | ||
2b8693c0 | 976 | static const struct file_operations capi_fops = |
1da177e4 LT |
977 | { |
978 | .owner = THIS_MODULE, | |
979 | .llseek = no_llseek, | |
980 | .read = capi_read, | |
981 | .write = capi_write, | |
982 | .poll = capi_poll, | |
983 | .ioctl = capi_ioctl, | |
984 | .open = capi_open, | |
985 | .release = capi_release, | |
986 | }; | |
987 | ||
988 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
989 | /* -------- tty_operations for capincci ----------------------------- */ | |
990 | ||
991 | static int capinc_tty_open(struct tty_struct * tty, struct file * file) | |
992 | { | |
993 | struct capiminor *mp; | |
053b47ff | 994 | unsigned long flags; |
1da177e4 | 995 | |
40fb2d0d | 996 | mp = capiminor_get(iminor(file->f_path.dentry->d_inode)); |
2f9e9b6d | 997 | if (mp->nccip == NULL) |
1da177e4 LT |
998 | return -ENXIO; |
999 | ||
1000 | tty->driver_data = (void *)mp; | |
1001 | ||
053b47ff | 1002 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1003 | if (atomic_read(&mp->ttyopencount) == 0) |
1004 | mp->tty = tty; | |
1005 | atomic_inc(&mp->ttyopencount); | |
1006 | #ifdef _DEBUG_REFCOUNT | |
1007 | printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1008 | #endif | |
1009 | handle_minor_recv(mp); | |
053b47ff | 1010 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1011 | return 0; |
1012 | } | |
1013 | ||
1014 | static void capinc_tty_close(struct tty_struct * tty, struct file * file) | |
1015 | { | |
1016 | struct capiminor *mp; | |
1017 | ||
1018 | mp = (struct capiminor *)tty->driver_data; | |
1019 | if (mp) { | |
1020 | if (atomic_dec_and_test(&mp->ttyopencount)) { | |
1021 | #ifdef _DEBUG_REFCOUNT | |
1022 | printk(KERN_DEBUG "capinc_tty_close lastclose\n"); | |
1023 | #endif | |
1024 | tty->driver_data = NULL; | |
1025 | mp->tty = NULL; | |
1026 | } | |
1027 | #ifdef _DEBUG_REFCOUNT | |
1028 | printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1029 | #endif | |
2f9e9b6d | 1030 | if (mp->nccip == NULL) |
1da177e4 LT |
1031 | capiminor_free(mp); |
1032 | } | |
1033 | ||
1034 | #ifdef _DEBUG_REFCOUNT | |
1035 | printk(KERN_DEBUG "capinc_tty_close\n"); | |
1036 | #endif | |
1037 | } | |
1038 | ||
1039 | static int capinc_tty_write(struct tty_struct * tty, | |
1040 | const unsigned char *buf, int count) | |
1041 | { | |
1042 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1043 | struct sk_buff *skb; | |
053b47ff | 1044 | unsigned long flags; |
1da177e4 LT |
1045 | |
1046 | #ifdef _DEBUG_TTYFUNCS | |
1047 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1048 | #endif | |
1049 | ||
1050 | if (!mp || !mp->nccip) { | |
1051 | #ifdef _DEBUG_TTYFUNCS | |
1052 | printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n"); | |
1053 | #endif | |
1054 | return 0; | |
1055 | } | |
1056 | ||
053b47ff | 1057 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1058 | skb = mp->ttyskb; |
1059 | if (skb) { | |
1060 | mp->ttyskb = NULL; | |
1061 | skb_queue_tail(&mp->outqueue, skb); | |
1062 | mp->outbytes += skb->len; | |
1063 | } | |
1064 | ||
1065 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1066 | if (!skb) { | |
1067 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1068 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1069 | return -ENOMEM; |
1070 | } | |
1071 | ||
1072 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1073 | memcpy(skb_put(skb, count), buf, count); | |
1074 | ||
1075 | skb_queue_tail(&mp->outqueue, skb); | |
1076 | mp->outbytes += skb->len; | |
1077 | (void)handle_minor_send(mp); | |
1078 | (void)handle_minor_recv(mp); | |
053b47ff | 1079 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1080 | return count; |
1081 | } | |
1082 | ||
f2545a75 | 1083 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 LT |
1084 | { |
1085 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1086 | struct sk_buff *skb; | |
053b47ff | 1087 | unsigned long flags; |
f2545a75 | 1088 | int ret = 1; |
1da177e4 LT |
1089 | |
1090 | #ifdef _DEBUG_TTYFUNCS | |
1091 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1092 | #endif | |
1093 | ||
1094 | if (!mp || !mp->nccip) { | |
1095 | #ifdef _DEBUG_TTYFUNCS | |
1096 | printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n"); | |
1097 | #endif | |
f2545a75 | 1098 | return 0; |
1da177e4 LT |
1099 | } |
1100 | ||
053b47ff | 1101 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1102 | skb = mp->ttyskb; |
1103 | if (skb) { | |
1104 | if (skb_tailroom(skb) > 0) { | |
1105 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1106 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1107 | return 1; |
1da177e4 LT |
1108 | } |
1109 | mp->ttyskb = NULL; | |
1110 | skb_queue_tail(&mp->outqueue, skb); | |
1111 | mp->outbytes += skb->len; | |
1112 | (void)handle_minor_send(mp); | |
1113 | } | |
1114 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1115 | if (skb) { | |
1116 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1117 | *(skb_put(skb, 1)) = ch; | |
1118 | mp->ttyskb = skb; | |
1119 | } else { | |
1120 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1121 | ret = 0; |
1da177e4 | 1122 | } |
053b47ff | 1123 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1124 | return ret; |
1da177e4 LT |
1125 | } |
1126 | ||
1127 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1128 | { | |
1129 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1130 | struct sk_buff *skb; | |
053b47ff | 1131 | unsigned long flags; |
1da177e4 LT |
1132 | |
1133 | #ifdef _DEBUG_TTYFUNCS | |
1134 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1135 | #endif | |
1136 | ||
1137 | if (!mp || !mp->nccip) { | |
1138 | #ifdef _DEBUG_TTYFUNCS | |
1139 | printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n"); | |
1140 | #endif | |
1141 | return; | |
1142 | } | |
1143 | ||
053b47ff | 1144 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1145 | skb = mp->ttyskb; |
1146 | if (skb) { | |
1147 | mp->ttyskb = NULL; | |
1148 | skb_queue_tail(&mp->outqueue, skb); | |
1149 | mp->outbytes += skb->len; | |
1150 | (void)handle_minor_send(mp); | |
1151 | } | |
1152 | (void)handle_minor_recv(mp); | |
053b47ff | 1153 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1157 | { | |
1158 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1159 | int room; | |
1160 | if (!mp || !mp->nccip) { | |
1161 | #ifdef _DEBUG_TTYFUNCS | |
1162 | printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n"); | |
1163 | #endif | |
1164 | return 0; | |
1165 | } | |
1166 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); | |
1167 | room *= CAPI_MAX_BLKSIZE; | |
1168 | #ifdef _DEBUG_TTYFUNCS | |
1169 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1170 | #endif | |
1171 | return room; | |
1172 | } | |
1173 | ||
408b664a | 1174 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 LT |
1175 | { |
1176 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1177 | if (!mp || !mp->nccip) { | |
1178 | #ifdef _DEBUG_TTYFUNCS | |
1179 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n"); | |
1180 | #endif | |
1181 | return 0; | |
1182 | } | |
1183 | #ifdef _DEBUG_TTYFUNCS | |
1184 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1185 | mp->outbytes, mp->nack, | |
1186 | skb_queue_len(&mp->outqueue), | |
1187 | skb_queue_len(&mp->inqueue)); | |
1188 | #endif | |
1189 | return mp->outbytes; | |
1190 | } | |
1191 | ||
1192 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1193 | unsigned int cmd, unsigned long arg) | |
1194 | { | |
1195 | int error = 0; | |
1196 | switch (cmd) { | |
1197 | default: | |
53e86317 | 1198 | error = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
1199 | break; |
1200 | } | |
1201 | return error; | |
1202 | } | |
1203 | ||
606d099c | 1204 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1205 | { |
1206 | #ifdef _DEBUG_TTYFUNCS | |
1207 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1208 | #endif | |
1209 | } | |
1210 | ||
1211 | static void capinc_tty_throttle(struct tty_struct * tty) | |
1212 | { | |
1213 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1214 | #ifdef _DEBUG_TTYFUNCS | |
1215 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1216 | #endif | |
1217 | if (mp) | |
1218 | mp->ttyinstop = 1; | |
1219 | } | |
1220 | ||
1221 | static void capinc_tty_unthrottle(struct tty_struct * tty) | |
1222 | { | |
1223 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1224 | unsigned long flags; |
1da177e4 LT |
1225 | #ifdef _DEBUG_TTYFUNCS |
1226 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1227 | #endif | |
1228 | if (mp) { | |
053b47ff | 1229 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1230 | mp->ttyinstop = 0; |
1231 | handle_minor_recv(mp); | |
053b47ff | 1232 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1233 | } |
1234 | } | |
1235 | ||
1236 | static void capinc_tty_stop(struct tty_struct *tty) | |
1237 | { | |
1238 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1239 | #ifdef _DEBUG_TTYFUNCS | |
1240 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1241 | #endif | |
1242 | if (mp) { | |
1243 | mp->ttyoutstop = 1; | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | static void capinc_tty_start(struct tty_struct *tty) | |
1248 | { | |
1249 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1250 | unsigned long flags; |
1da177e4 LT |
1251 | #ifdef _DEBUG_TTYFUNCS |
1252 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1253 | #endif | |
1254 | if (mp) { | |
053b47ff | 1255 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1256 | mp->ttyoutstop = 0; |
1257 | (void)handle_minor_send(mp); | |
053b47ff | 1258 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1259 | } |
1260 | } | |
1261 | ||
1262 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1263 | { | |
1264 | #ifdef _DEBUG_TTYFUNCS | |
1265 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1266 | #endif | |
1267 | } | |
1268 | ||
9e98966c | 1269 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1270 | { |
1271 | #ifdef _DEBUG_TTYFUNCS | |
1272 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1273 | #endif | |
9e98966c | 1274 | return 0; |
1da177e4 LT |
1275 | } |
1276 | ||
1277 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1278 | { | |
1279 | #ifdef _DEBUG_TTYFUNCS | |
1280 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1281 | #endif | |
1282 | } | |
1283 | ||
1284 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1285 | { | |
1286 | #ifdef _DEBUG_TTYFUNCS | |
1287 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1288 | #endif | |
1289 | } | |
1290 | ||
1291 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1292 | { | |
1293 | #ifdef _DEBUG_TTYFUNCS | |
1294 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1295 | #endif | |
1296 | } | |
1297 | ||
b68e31d0 | 1298 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1299 | .open = capinc_tty_open, |
1300 | .close = capinc_tty_close, | |
1301 | .write = capinc_tty_write, | |
1302 | .put_char = capinc_tty_put_char, | |
1303 | .flush_chars = capinc_tty_flush_chars, | |
1304 | .write_room = capinc_tty_write_room, | |
1305 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1306 | .ioctl = capinc_tty_ioctl, | |
1307 | .set_termios = capinc_tty_set_termios, | |
1308 | .throttle = capinc_tty_throttle, | |
1309 | .unthrottle = capinc_tty_unthrottle, | |
1310 | .stop = capinc_tty_stop, | |
1311 | .start = capinc_tty_start, | |
1312 | .hangup = capinc_tty_hangup, | |
1313 | .break_ctl = capinc_tty_break_ctl, | |
1314 | .flush_buffer = capinc_tty_flush_buffer, | |
1315 | .set_ldisc = capinc_tty_set_ldisc, | |
1316 | .send_xchar = capinc_tty_send_xchar, | |
1da177e4 LT |
1317 | }; |
1318 | ||
e76b1544 | 1319 | static int __init capinc_tty_init(void) |
1da177e4 LT |
1320 | { |
1321 | struct tty_driver *drv; | |
e76b1544 JK |
1322 | int err; |
1323 | ||
1da177e4 LT |
1324 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
1325 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1326 | if (capi_ttyminors <= 0) | |
1327 | capi_ttyminors = CAPINC_NR_PORTS; | |
1328 | ||
81d17fe5 JK |
1329 | capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, |
1330 | GFP_KERNEL); | |
1331 | if (!capiminors) | |
1da177e4 LT |
1332 | return -ENOMEM; |
1333 | ||
81d17fe5 JK |
1334 | drv = alloc_tty_driver(capi_ttyminors); |
1335 | if (!drv) { | |
1336 | kfree(capiminors); | |
1337 | return -ENOMEM; | |
1338 | } | |
1da177e4 LT |
1339 | drv->owner = THIS_MODULE; |
1340 | drv->driver_name = "capi_nc"; | |
1da177e4 | 1341 | drv->name = "capi"; |
e95ac143 | 1342 | drv->major = 0; |
1da177e4 LT |
1343 | drv->minor_start = 0; |
1344 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1345 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1346 | drv->init_termios = tty_std_termios; | |
1347 | drv->init_termios.c_iflag = ICRNL; | |
1348 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1349 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1350 | drv->init_termios.c_lflag = 0; | |
40fb2d0d JK |
1351 | drv->flags = |
1352 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | | |
1353 | TTY_DRIVER_DYNAMIC_DEV; | |
1da177e4 | 1354 | tty_set_operations(drv, &capinc_ops); |
e76b1544 JK |
1355 | |
1356 | err = tty_register_driver(drv); | |
1357 | if (err) { | |
1da177e4 | 1358 | put_tty_driver(drv); |
81d17fe5 | 1359 | kfree(capiminors); |
1da177e4 | 1360 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
e76b1544 | 1361 | return err; |
1da177e4 LT |
1362 | } |
1363 | capinc_tty_driver = drv; | |
1364 | return 0; | |
1365 | } | |
1366 | ||
e76b1544 | 1367 | static void __exit capinc_tty_exit(void) |
1da177e4 | 1368 | { |
e76b1544 JK |
1369 | tty_unregister_driver(capinc_tty_driver); |
1370 | put_tty_driver(capinc_tty_driver); | |
81d17fe5 | 1371 | kfree(capiminors); |
1da177e4 LT |
1372 | } |
1373 | ||
501c87a9 JK |
1374 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
1375 | ||
1376 | static inline int capinc_tty_init(void) | |
1377 | { | |
1378 | return 0; | |
1379 | } | |
1380 | ||
1381 | static inline void capinc_tty_exit(void) { } | |
1382 | ||
1383 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1da177e4 LT |
1384 | |
1385 | /* -------- /proc functions ----------------------------------------- */ | |
1386 | ||
1387 | /* | |
1388 | * /proc/capi/capi20: | |
1389 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1390 | */ | |
9a58a80a | 1391 | static int capi20_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1392 | { |
1393 | struct capidev *cdev; | |
1394 | struct list_head *l; | |
1da177e4 | 1395 | |
b8f433dc | 1396 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1397 | list_for_each(l, &capidev_list) { |
1398 | cdev = list_entry(l, struct capidev, list); | |
9a58a80a | 1399 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
1da177e4 LT |
1400 | cdev->ap.applid, |
1401 | cdev->ap.nrecvctlpkt, | |
1402 | cdev->ap.nrecvdatapkt, | |
1403 | cdev->ap.nsentctlpkt, | |
1404 | cdev->ap.nsentdatapkt); | |
1da177e4 | 1405 | } |
b8f433dc | 1406 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1407 | return 0; |
1da177e4 LT |
1408 | } |
1409 | ||
9a58a80a AD |
1410 | static int capi20_proc_open(struct inode *inode, struct file *file) |
1411 | { | |
1412 | return single_open(file, capi20_proc_show, NULL); | |
1413 | } | |
1414 | ||
1415 | static const struct file_operations capi20_proc_fops = { | |
1416 | .owner = THIS_MODULE, | |
1417 | .open = capi20_proc_open, | |
1418 | .read = seq_read, | |
1419 | .llseek = seq_lseek, | |
1420 | .release = single_release, | |
1421 | }; | |
1422 | ||
1da177e4 LT |
1423 | /* |
1424 | * /proc/capi/capi20ncci: | |
1425 | * applid ncci | |
1426 | */ | |
9a58a80a | 1427 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1428 | { |
884f5c44 JK |
1429 | struct capidev *cdev; |
1430 | struct capincci *np; | |
1da177e4 | 1431 | |
b8f433dc | 1432 | mutex_lock(&capidev_list_lock); |
884f5c44 | 1433 | list_for_each_entry(cdev, &capidev_list, list) { |
05b41494 | 1434 | mutex_lock(&cdev->lock); |
884f5c44 JK |
1435 | list_for_each_entry(np, &cdev->nccis, list) |
1436 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); | |
05b41494 | 1437 | mutex_unlock(&cdev->lock); |
1da177e4 | 1438 | } |
b8f433dc | 1439 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1440 | return 0; |
1da177e4 LT |
1441 | } |
1442 | ||
9a58a80a AD |
1443 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
1444 | { | |
1445 | return single_open(file, capi20ncci_proc_show, NULL); | |
1446 | } | |
1447 | ||
1448 | static const struct file_operations capi20ncci_proc_fops = { | |
1449 | .owner = THIS_MODULE, | |
1450 | .open = capi20ncci_proc_open, | |
1451 | .read = seq_read, | |
1452 | .llseek = seq_lseek, | |
1453 | .release = single_release, | |
1da177e4 LT |
1454 | }; |
1455 | ||
1456 | static void __init proc_init(void) | |
1457 | { | |
9a58a80a AD |
1458 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
1459 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); | |
1da177e4 LT |
1460 | } |
1461 | ||
1462 | static void __exit proc_exit(void) | |
1463 | { | |
9a58a80a AD |
1464 | remove_proc_entry("capi/capi20", NULL); |
1465 | remove_proc_entry("capi/capi20ncci", NULL); | |
1da177e4 LT |
1466 | } |
1467 | ||
1468 | /* -------- init function and module interface ---------------------- */ | |
1469 | ||
1470 | ||
1da177e4 LT |
1471 | static int __init capi_init(void) |
1472 | { | |
88549d6b | 1473 | const char *compileinfo; |
6d9eac34 | 1474 | int major_ret; |
1da177e4 | 1475 | |
6d9eac34 AM |
1476 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1477 | if (major_ret < 0) { | |
1da177e4 | 1478 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1479 | return major_ret; |
1da177e4 | 1480 | } |
56b22935 | 1481 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1482 | if (IS_ERR(capi_class)) { |
1483 | unregister_chrdev(capi_major, "capi20"); | |
1484 | return PTR_ERR(capi_class); | |
1485 | } | |
1486 | ||
a9b12619 | 1487 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
1da177e4 | 1488 | |
1da177e4 | 1489 | if (capinc_tty_init() < 0) { |
d78b0368 | 1490 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1491 | class_destroy(capi_class); |
1da177e4 LT |
1492 | unregister_chrdev(capi_major, "capi20"); |
1493 | return -ENOMEM; | |
1494 | } | |
1da177e4 LT |
1495 | |
1496 | proc_init(); | |
1497 | ||
1da177e4 LT |
1498 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
1499 | compileinfo = " (middleware+capifs)"; | |
501c87a9 | 1500 | #elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE) |
1da177e4 | 1501 | compileinfo = " (no capifs)"; |
1da177e4 LT |
1502 | #else |
1503 | compileinfo = " (no middleware)"; | |
1504 | #endif | |
88549d6b JK |
1505 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
1506 | capi_major, compileinfo); | |
1da177e4 LT |
1507 | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | static void __exit capi_exit(void) | |
1512 | { | |
1513 | proc_exit(); | |
1514 | ||
d78b0368 | 1515 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1516 | class_destroy(capi_class); |
1da177e4 | 1517 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 | 1518 | |
1da177e4 | 1519 | capinc_tty_exit(); |
1da177e4 LT |
1520 | } |
1521 | ||
1522 | module_init(capi_init); | |
1523 | module_exit(capi_exit); |