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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> | |
26 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
27 | #include <linux/tty.h> | |
28 | #ifdef CONFIG_PPP | |
29 | #include <linux/netdevice.h> | |
30 | #include <linux/ppp_defs.h> | |
31 | #include <linux/if_ppp.h> | |
32 | #endif /* CONFIG_PPP */ | |
33 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
34 | #include <linux/skbuff.h> | |
35 | #include <linux/proc_fs.h> | |
36 | #include <linux/poll.h> | |
37 | #include <linux/capi.h> | |
38 | #include <linux/kernelcapi.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/device.h> | |
41 | #include <linux/moduleparam.h> | |
1da177e4 LT |
42 | #include <linux/isdn/capiutil.h> |
43 | #include <linux/isdn/capicmd.h> | |
44 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) | |
45 | #include "capifs.h" | |
46 | #endif | |
47 | ||
48 | static char *revision = "$Revision: 1.1.2.7 $"; | |
49 | ||
50 | MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); | |
51 | MODULE_AUTHOR("Carsten Paeth"); | |
52 | MODULE_LICENSE("GPL"); | |
53 | ||
54 | #undef _DEBUG_REFCOUNT /* alloc/free and open/close debug */ | |
55 | #undef _DEBUG_TTYFUNCS /* call to tty_driver */ | |
56 | #undef _DEBUG_DATAFLOW /* data flow */ | |
57 | ||
58 | /* -------- driver information -------------------------------------- */ | |
59 | ||
56b22935 | 60 | static struct class *capi_class; |
1da177e4 | 61 | |
408b664a | 62 | static int capi_major = 68; /* allocated */ |
1da177e4 LT |
63 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
64 | #define CAPINC_NR_PORTS 32 | |
65 | #define CAPINC_MAX_PORTS 256 | |
408b664a AB |
66 | static int capi_ttymajor = 191; |
67 | static int capi_ttyminors = CAPINC_NR_PORTS; | |
1da177e4 LT |
68 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
69 | ||
70 | module_param_named(major, capi_major, uint, 0); | |
71 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
72 | module_param_named(ttymajor, capi_ttymajor, uint, 0); | |
73 | module_param_named(ttyminors, capi_ttyminors, uint, 0); | |
74 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
75 | ||
76 | /* -------- defines ------------------------------------------------- */ | |
77 | ||
78 | #define CAPINC_MAX_RECVQUEUE 10 | |
79 | #define CAPINC_MAX_SENDQUEUE 10 | |
80 | #define CAPI_MAX_BLKSIZE 2048 | |
81 | ||
82 | /* -------- data structures ----------------------------------------- */ | |
83 | ||
84 | struct capidev; | |
85 | struct capincci; | |
86 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
87 | struct capiminor; | |
88 | ||
6aa65472 MB |
89 | struct datahandle_queue { |
90 | struct list_head list; | |
91 | u16 datahandle; | |
92 | }; | |
93 | ||
1da177e4 LT |
94 | struct capiminor { |
95 | struct list_head list; | |
96 | struct capincci *nccip; | |
97 | unsigned int minor; | |
98 | ||
99 | struct capi20_appl *ap; | |
100 | u32 ncci; | |
101 | u16 datahandle; | |
102 | u16 msgid; | |
103 | ||
104 | struct tty_struct *tty; | |
105 | int ttyinstop; | |
106 | int ttyoutstop; | |
107 | struct sk_buff *ttyskb; | |
108 | atomic_t ttyopencount; | |
109 | ||
110 | struct sk_buff_head inqueue; | |
111 | int inbytes; | |
112 | struct sk_buff_head outqueue; | |
113 | int outbytes; | |
114 | ||
115 | /* transmit path */ | |
6aa65472 | 116 | struct list_head ackqueue; |
1da177e4 | 117 | int nack; |
6aa65472 | 118 | spinlock_t ackqlock; |
1da177e4 LT |
119 | }; |
120 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
121 | ||
053b47ff MB |
122 | /* FIXME: The following lock is a sledgehammer-workaround to a |
123 | * locking issue with the capiminor (and maybe other) data structure(s). | |
124 | * Access to this data is done in a racy way and crashes the machine with | |
125 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
126 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
127 | * The correct (and scalable) fix for the issue seems to require | |
128 | * an API change to the drivers... . */ | |
129 | static DEFINE_SPINLOCK(workaround_lock); | |
130 | ||
1da177e4 LT |
131 | struct capincci { |
132 | struct capincci *next; | |
133 | u32 ncci; | |
134 | struct capidev *cdev; | |
135 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
136 | struct capiminor *minorp; | |
137 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
138 | }; | |
139 | ||
140 | struct capidev { | |
141 | struct list_head list; | |
142 | struct capi20_appl ap; | |
143 | u16 errcode; | |
144 | unsigned userflags; | |
145 | ||
146 | struct sk_buff_head recvqueue; | |
147 | wait_queue_head_t recvwait; | |
148 | ||
149 | struct capincci *nccis; | |
150 | ||
9ea6e5d8 | 151 | struct mutex ncci_list_mtx; |
1da177e4 LT |
152 | }; |
153 | ||
154 | /* -------- global variables ---------------------------------------- */ | |
155 | ||
156 | static DEFINE_RWLOCK(capidev_list_lock); | |
157 | static LIST_HEAD(capidev_list); | |
158 | ||
159 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
160 | static DEFINE_RWLOCK(capiminor_list_lock); | |
161 | static LIST_HEAD(capiminor_list); | |
162 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
163 | ||
164 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
165 | /* -------- datahandles --------------------------------------------- */ | |
166 | ||
167 | static int capincci_add_ack(struct capiminor *mp, u16 datahandle) | |
168 | { | |
6aa65472 MB |
169 | struct datahandle_queue *n; |
170 | unsigned long flags; | |
1da177e4 LT |
171 | |
172 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
173 | if (unlikely(!n)) { |
174 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
175 | return -1; | |
1da177e4 | 176 | } |
1da177e4 | 177 | n->datahandle = datahandle; |
6aa65472 MB |
178 | INIT_LIST_HEAD(&n->list); |
179 | spin_lock_irqsave(&mp->ackqlock, flags); | |
180 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 181 | mp->nack++; |
6aa65472 | 182 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
183 | return 0; |
184 | } | |
185 | ||
186 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
187 | { | |
6aa65472 MB |
188 | struct datahandle_queue *p, *tmp; |
189 | unsigned long flags; | |
1da177e4 | 190 | |
6aa65472 MB |
191 | spin_lock_irqsave(&mp->ackqlock, flags); |
192 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
193 | if (p->datahandle == datahandle) { | |
194 | list_del(&p->list); | |
1da177e4 LT |
195 | kfree(p); |
196 | mp->nack--; | |
6aa65472 | 197 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
198 | return 0; |
199 | } | |
200 | } | |
6aa65472 | 201 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
202 | return -1; |
203 | } | |
204 | ||
205 | static void capiminor_del_all_ack(struct capiminor *mp) | |
206 | { | |
6aa65472 MB |
207 | struct datahandle_queue *p, *tmp; |
208 | unsigned long flags; | |
1da177e4 | 209 | |
6aa65472 MB |
210 | spin_lock_irqsave(&mp->ackqlock, flags); |
211 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
212 | list_del(&p->list); | |
1da177e4 LT |
213 | kfree(p); |
214 | mp->nack--; | |
215 | } | |
6aa65472 | 216 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
217 | } |
218 | ||
219 | ||
220 | /* -------- struct capiminor ---------------------------------------- */ | |
221 | ||
222 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) | |
223 | { | |
224 | struct capiminor *mp, *p; | |
225 | unsigned int minor = 0; | |
226 | unsigned long flags; | |
227 | ||
41f96935 | 228 | mp = kzalloc(sizeof(*mp), GFP_ATOMIC); |
1da177e4 LT |
229 | if (!mp) { |
230 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
231 | return NULL; | |
232 | } | |
233 | ||
1da177e4 LT |
234 | mp->ap = ap; |
235 | mp->ncci = ncci; | |
236 | mp->msgid = 0; | |
237 | atomic_set(&mp->ttyopencount,0); | |
6aa65472 MB |
238 | INIT_LIST_HEAD(&mp->ackqueue); |
239 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
240 | |
241 | skb_queue_head_init(&mp->inqueue); | |
242 | skb_queue_head_init(&mp->outqueue); | |
243 | ||
244 | /* Allocate the least unused minor number. | |
245 | */ | |
246 | write_lock_irqsave(&capiminor_list_lock, flags); | |
247 | if (list_empty(&capiminor_list)) | |
248 | list_add(&mp->list, &capiminor_list); | |
249 | else { | |
250 | list_for_each_entry(p, &capiminor_list, list) { | |
251 | if (p->minor > minor) | |
252 | break; | |
253 | minor++; | |
254 | } | |
255 | ||
256 | if (minor < capi_ttyminors) { | |
257 | mp->minor = minor; | |
258 | list_add(&mp->list, p->list.prev); | |
259 | } | |
260 | } | |
261 | write_unlock_irqrestore(&capiminor_list_lock, flags); | |
262 | ||
263 | if (!(minor < capi_ttyminors)) { | |
264 | printk(KERN_NOTICE "capi: out of minors\n"); | |
265 | kfree(mp); | |
266 | return NULL; | |
267 | } | |
268 | ||
269 | return mp; | |
270 | } | |
271 | ||
272 | static void capiminor_free(struct capiminor *mp) | |
273 | { | |
274 | unsigned long flags; | |
275 | ||
276 | write_lock_irqsave(&capiminor_list_lock, flags); | |
277 | list_del(&mp->list); | |
278 | write_unlock_irqrestore(&capiminor_list_lock, flags); | |
279 | ||
280 | if (mp->ttyskb) kfree_skb(mp->ttyskb); | |
281 | mp->ttyskb = NULL; | |
282 | skb_queue_purge(&mp->inqueue); | |
283 | skb_queue_purge(&mp->outqueue); | |
284 | capiminor_del_all_ack(mp); | |
285 | kfree(mp); | |
286 | } | |
287 | ||
408b664a | 288 | static struct capiminor *capiminor_find(unsigned int minor) |
1da177e4 LT |
289 | { |
290 | struct list_head *l; | |
291 | struct capiminor *p = NULL; | |
292 | ||
293 | read_lock(&capiminor_list_lock); | |
294 | list_for_each(l, &capiminor_list) { | |
295 | p = list_entry(l, struct capiminor, list); | |
296 | if (p->minor == minor) | |
297 | break; | |
298 | } | |
299 | read_unlock(&capiminor_list_lock); | |
300 | if (l == &capiminor_list) | |
301 | return NULL; | |
302 | ||
303 | return p; | |
304 | } | |
305 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
306 | ||
307 | /* -------- struct capincci ----------------------------------------- */ | |
308 | ||
309 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) | |
310 | { | |
311 | struct capincci *np, **pp; | |
312 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
313 | struct capiminor *mp = NULL; | |
314 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
315 | ||
41f96935 | 316 | np = kzalloc(sizeof(*np), GFP_ATOMIC); |
1da177e4 LT |
317 | if (!np) |
318 | return NULL; | |
1da177e4 LT |
319 | np->ncci = ncci; |
320 | np->cdev = cdev; | |
321 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
322 | mp = NULL; | |
323 | if (cdev->userflags & CAPIFLAG_HIGHJACKING) | |
324 | mp = np->minorp = capiminor_alloc(&cdev->ap, ncci); | |
325 | if (mp) { | |
326 | mp->nccip = np; | |
327 | #ifdef _DEBUG_REFCOUNT | |
328 | printk(KERN_DEBUG "set mp->nccip\n"); | |
329 | #endif | |
330 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) | |
331 | capifs_new_ncci(mp->minor, MKDEV(capi_ttymajor, mp->minor)); | |
332 | #endif | |
333 | } | |
334 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
335 | for (pp=&cdev->nccis; *pp; pp = &(*pp)->next) | |
336 | ; | |
337 | *pp = np; | |
338 | return np; | |
339 | } | |
340 | ||
341 | static void capincci_free(struct capidev *cdev, u32 ncci) | |
342 | { | |
343 | struct capincci *np, **pp; | |
344 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
345 | struct capiminor *mp; | |
346 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
347 | ||
348 | pp=&cdev->nccis; | |
349 | while (*pp) { | |
350 | np = *pp; | |
351 | if (ncci == 0xffffffff || np->ncci == ncci) { | |
352 | *pp = (*pp)->next; | |
353 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
2f9e9b6d | 354 | if ((mp = np->minorp) != NULL) { |
1da177e4 LT |
355 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
356 | capifs_free_ncci(mp->minor); | |
357 | #endif | |
358 | if (mp->tty) { | |
359 | mp->nccip = NULL; | |
360 | #ifdef _DEBUG_REFCOUNT | |
361 | printk(KERN_DEBUG "reset mp->nccip\n"); | |
362 | #endif | |
363 | tty_hangup(mp->tty); | |
364 | } else { | |
365 | capiminor_free(mp); | |
366 | } | |
367 | } | |
368 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
369 | kfree(np); | |
2f9e9b6d | 370 | if (*pp == NULL) return; |
1da177e4 LT |
371 | } else { |
372 | pp = &(*pp)->next; | |
373 | } | |
374 | } | |
375 | } | |
376 | ||
377 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) | |
378 | { | |
379 | struct capincci *p; | |
380 | ||
381 | for (p=cdev->nccis; p ; p = p->next) { | |
382 | if (p->ncci == ncci) | |
383 | break; | |
384 | } | |
385 | return p; | |
386 | } | |
387 | ||
388 | /* -------- struct capidev ------------------------------------------ */ | |
389 | ||
390 | static struct capidev *capidev_alloc(void) | |
391 | { | |
392 | struct capidev *cdev; | |
393 | unsigned long flags; | |
394 | ||
41f96935 | 395 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); |
1da177e4 LT |
396 | if (!cdev) |
397 | return NULL; | |
1da177e4 | 398 | |
9ea6e5d8 | 399 | mutex_init(&cdev->ncci_list_mtx); |
1da177e4 LT |
400 | skb_queue_head_init(&cdev->recvqueue); |
401 | init_waitqueue_head(&cdev->recvwait); | |
402 | write_lock_irqsave(&capidev_list_lock, flags); | |
403 | list_add_tail(&cdev->list, &capidev_list); | |
404 | write_unlock_irqrestore(&capidev_list_lock, flags); | |
405 | return cdev; | |
406 | } | |
407 | ||
408 | static void capidev_free(struct capidev *cdev) | |
409 | { | |
410 | unsigned long flags; | |
411 | ||
412 | if (cdev->ap.applid) { | |
413 | capi20_release(&cdev->ap); | |
414 | cdev->ap.applid = 0; | |
415 | } | |
416 | skb_queue_purge(&cdev->recvqueue); | |
417 | ||
9ea6e5d8 | 418 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 419 | capincci_free(cdev, 0xffffffff); |
9ea6e5d8 | 420 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
421 | |
422 | write_lock_irqsave(&capidev_list_lock, flags); | |
423 | list_del(&cdev->list); | |
424 | write_unlock_irqrestore(&capidev_list_lock, flags); | |
425 | kfree(cdev); | |
426 | } | |
427 | ||
428 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
429 | /* -------- handle data queue --------------------------------------- */ | |
430 | ||
431 | static struct sk_buff * | |
432 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) | |
433 | { | |
434 | struct sk_buff *nskb; | |
435 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC); | |
436 | if (nskb) { | |
437 | u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2); | |
438 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); | |
439 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); | |
440 | capimsg_setu16(s, 2, mp->ap->applid); | |
441 | capimsg_setu8 (s, 4, CAPI_DATA_B3); | |
442 | capimsg_setu8 (s, 5, CAPI_RESP); | |
443 | capimsg_setu16(s, 6, mp->msgid++); | |
444 | capimsg_setu32(s, 8, mp->ncci); | |
445 | capimsg_setu16(s, 12, datahandle); | |
446 | } | |
447 | return nskb; | |
448 | } | |
449 | ||
450 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) | |
451 | { | |
452 | struct sk_buff *nskb; | |
453 | int datalen; | |
454 | u16 errcode, datahandle; | |
455 | struct tty_ldisc *ld; | |
456 | ||
457 | datalen = skb->len - CAPIMSG_LEN(skb->data); | |
458 | if (mp->tty == NULL) | |
459 | { | |
460 | #ifdef _DEBUG_DATAFLOW | |
461 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
462 | #endif | |
463 | return -1; | |
464 | } | |
465 | ||
466 | ld = tty_ldisc_ref(mp->tty); | |
467 | if (ld == NULL) | |
468 | return -1; | |
a352def2 | 469 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
470 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
471 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
472 | #endif | |
473 | goto bad; | |
474 | } | |
475 | if (mp->ttyinstop) { | |
476 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
477 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
478 | #endif | |
479 | goto bad; | |
480 | } | |
33f0f88f | 481 | if (mp->tty->receive_room < datalen) { |
1da177e4 LT |
482 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
483 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
484 | #endif | |
485 | goto bad; | |
486 | } | |
2f9e9b6d | 487 | if ((nskb = gen_data_b3_resp_for(mp, skb)) == NULL) { |
1da177e4 LT |
488 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
489 | goto bad; | |
490 | } | |
491 | datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4); | |
492 | errcode = capi20_put_message(mp->ap, nskb); | |
493 | if (errcode != CAPI_NOERROR) { | |
494 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", | |
495 | errcode); | |
496 | kfree_skb(nskb); | |
497 | goto bad; | |
498 | } | |
499 | (void)skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
500 | #ifdef _DEBUG_DATAFLOW | |
501 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
502 | datahandle, skb->len); | |
503 | #endif | |
a352def2 | 504 | ld->ops->receive_buf(mp->tty, skb->data, NULL, skb->len); |
1da177e4 LT |
505 | kfree_skb(skb); |
506 | tty_ldisc_deref(ld); | |
507 | return 0; | |
508 | bad: | |
509 | tty_ldisc_deref(ld); | |
510 | return -1; | |
511 | } | |
512 | ||
513 | static void handle_minor_recv(struct capiminor *mp) | |
514 | { | |
515 | struct sk_buff *skb; | |
2f9e9b6d | 516 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) { |
1da177e4 LT |
517 | unsigned int len = skb->len; |
518 | mp->inbytes -= len; | |
519 | if (handle_recv_skb(mp, skb) < 0) { | |
520 | skb_queue_head(&mp->inqueue, skb); | |
521 | mp->inbytes += len; | |
522 | return; | |
523 | } | |
524 | } | |
525 | } | |
526 | ||
527 | static int handle_minor_send(struct capiminor *mp) | |
528 | { | |
529 | struct sk_buff *skb; | |
530 | u16 len; | |
531 | int count = 0; | |
532 | u16 errcode; | |
533 | u16 datahandle; | |
534 | ||
535 | if (mp->tty && mp->ttyoutstop) { | |
536 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
537 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
538 | #endif | |
539 | return 0; | |
540 | } | |
541 | ||
2f9e9b6d | 542 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
1da177e4 LT |
543 | datahandle = mp->datahandle; |
544 | len = (u16)skb->len; | |
545 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
546 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
547 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
548 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
549 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
550 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
551 | capimsg_setu16(skb->data, 6, mp->msgid++); | |
552 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ | |
5e6c20a9 | 553 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
554 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
555 | capimsg_setu16(skb->data, 18, datahandle); | |
556 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
557 | ||
558 | if (capincci_add_ack(mp, datahandle) < 0) { | |
559 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
560 | skb_queue_head(&mp->outqueue, skb); | |
561 | return count; | |
562 | } | |
563 | errcode = capi20_put_message(mp->ap, skb); | |
564 | if (errcode == CAPI_NOERROR) { | |
565 | mp->datahandle++; | |
566 | count++; | |
567 | mp->outbytes -= len; | |
568 | #ifdef _DEBUG_DATAFLOW | |
569 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
570 | datahandle, len); | |
571 | #endif | |
572 | continue; | |
573 | } | |
574 | capiminor_del_ack(mp, datahandle); | |
575 | ||
576 | if (errcode == CAPI_SENDQUEUEFULL) { | |
577 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
578 | skb_queue_head(&mp->outqueue, skb); | |
579 | break; | |
580 | } | |
581 | ||
582 | /* ups, drop packet */ | |
583 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
584 | mp->outbytes -= len; | |
585 | kfree_skb(skb); | |
586 | } | |
587 | return count; | |
588 | } | |
589 | ||
590 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
591 | /* -------- function called by lower level -------------------------- */ | |
592 | ||
593 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
594 | { | |
595 | struct capidev *cdev = ap->private; | |
596 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
597 | struct capiminor *mp; | |
598 | u16 datahandle; | |
599 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
600 | struct capincci *np; | |
601 | u32 ncci; | |
053b47ff | 602 | unsigned long flags; |
1da177e4 LT |
603 | |
604 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { | |
605 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
606 | if (info == 0) { | |
9ea6e5d8 | 607 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 608 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
9ea6e5d8 | 609 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
610 | } |
611 | } | |
612 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) { | |
9ea6e5d8 | 613 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 614 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
9ea6e5d8 | 615 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 | 616 | } |
053b47ff | 617 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
618 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
619 | skb_queue_tail(&cdev->recvqueue, skb); | |
620 | wake_up_interruptible(&cdev->recvwait); | |
053b47ff | 621 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
622 | return; |
623 | } | |
624 | ncci = CAPIMSG_CONTROL(skb->data); | |
625 | for (np = cdev->nccis; np && np->ncci != ncci; np = np->next) | |
626 | ; | |
627 | if (!np) { | |
628 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
629 | skb_queue_tail(&cdev->recvqueue, skb); | |
630 | wake_up_interruptible(&cdev->recvwait); | |
053b47ff | 631 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
632 | return; |
633 | } | |
634 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE | |
635 | skb_queue_tail(&cdev->recvqueue, skb); | |
636 | wake_up_interruptible(&cdev->recvwait); | |
637 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
638 | mp = np->minorp; | |
639 | if (!mp) { | |
640 | skb_queue_tail(&cdev->recvqueue, skb); | |
641 | wake_up_interruptible(&cdev->recvwait); | |
053b47ff | 642 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
643 | return; |
644 | } | |
645 | ||
646 | ||
647 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { | |
648 | ||
649 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); | |
650 | #ifdef _DEBUG_DATAFLOW | |
651 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
652 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
653 | #endif | |
654 | skb_queue_tail(&mp->inqueue, skb); | |
655 | mp->inbytes += skb->len; | |
656 | handle_minor_recv(mp); | |
657 | ||
658 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
659 | ||
660 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
661 | #ifdef _DEBUG_DATAFLOW | |
662 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
663 | datahandle, | |
664 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
665 | #endif | |
666 | kfree_skb(skb); | |
667 | (void)capiminor_del_ack(mp, datahandle); | |
668 | if (mp->tty) | |
669 | tty_wakeup(mp->tty); | |
670 | (void)handle_minor_send(mp); | |
671 | ||
672 | } else { | |
673 | /* ups, let capi application handle it :-) */ | |
674 | skb_queue_tail(&cdev->recvqueue, skb); | |
675 | wake_up_interruptible(&cdev->recvwait); | |
676 | } | |
677 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
053b47ff | 678 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
679 | } |
680 | ||
681 | /* -------- file_operations for capidev ----------------------------- */ | |
682 | ||
683 | static ssize_t | |
684 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
685 | { | |
686 | struct capidev *cdev = (struct capidev *)file->private_data; | |
687 | struct sk_buff *skb; | |
688 | size_t copied; | |
689 | ||
690 | if (!cdev->ap.applid) | |
691 | return -ENODEV; | |
692 | ||
2f9e9b6d | 693 | if ((skb = skb_dequeue(&cdev->recvqueue)) == NULL) { |
1da177e4 LT |
694 | |
695 | if (file->f_flags & O_NONBLOCK) | |
696 | return -EAGAIN; | |
697 | ||
698 | for (;;) { | |
699 | interruptible_sleep_on(&cdev->recvwait); | |
2f9e9b6d | 700 | if ((skb = skb_dequeue(&cdev->recvqueue)) != NULL) |
1da177e4 LT |
701 | break; |
702 | if (signal_pending(current)) | |
703 | break; | |
704 | } | |
2f9e9b6d | 705 | if (skb == NULL) |
1da177e4 LT |
706 | return -ERESTARTNOHAND; |
707 | } | |
708 | if (skb->len > count) { | |
709 | skb_queue_head(&cdev->recvqueue, skb); | |
710 | return -EMSGSIZE; | |
711 | } | |
712 | if (copy_to_user(buf, skb->data, skb->len)) { | |
713 | skb_queue_head(&cdev->recvqueue, skb); | |
714 | return -EFAULT; | |
715 | } | |
716 | copied = skb->len; | |
717 | ||
718 | kfree_skb(skb); | |
719 | ||
720 | return copied; | |
721 | } | |
722 | ||
723 | static ssize_t | |
724 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
725 | { | |
726 | struct capidev *cdev = (struct capidev *)file->private_data; | |
727 | struct sk_buff *skb; | |
728 | u16 mlen; | |
729 | ||
730 | if (!cdev->ap.applid) | |
731 | return -ENODEV; | |
732 | ||
733 | skb = alloc_skb(count, GFP_USER); | |
734 | if (!skb) | |
735 | return -ENOMEM; | |
736 | ||
737 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
738 | kfree_skb(skb); | |
739 | return -EFAULT; | |
740 | } | |
741 | mlen = CAPIMSG_LEN(skb->data); | |
742 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
743 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
744 | kfree_skb(skb); | |
745 | return -EINVAL; | |
746 | } | |
747 | } else { | |
748 | if (mlen != count) { | |
749 | kfree_skb(skb); | |
750 | return -EINVAL; | |
751 | } | |
752 | } | |
753 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
754 | ||
755 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
9ea6e5d8 | 756 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 757 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
9ea6e5d8 | 758 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
759 | } |
760 | ||
761 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
762 | ||
763 | if (cdev->errcode) { | |
764 | kfree_skb(skb); | |
765 | return -EIO; | |
766 | } | |
767 | return count; | |
768 | } | |
769 | ||
770 | static unsigned int | |
771 | capi_poll(struct file *file, poll_table * wait) | |
772 | { | |
773 | struct capidev *cdev = (struct capidev *)file->private_data; | |
774 | unsigned int mask = 0; | |
775 | ||
776 | if (!cdev->ap.applid) | |
777 | return POLLERR; | |
778 | ||
779 | poll_wait(file, &(cdev->recvwait), wait); | |
780 | mask = POLLOUT | POLLWRNORM; | |
781 | if (!skb_queue_empty(&cdev->recvqueue)) | |
782 | mask |= POLLIN | POLLRDNORM; | |
783 | return mask; | |
784 | } | |
785 | ||
786 | static int | |
787 | capi_ioctl(struct inode *inode, struct file *file, | |
788 | unsigned int cmd, unsigned long arg) | |
789 | { | |
790 | struct capidev *cdev = file->private_data; | |
791 | struct capi20_appl *ap = &cdev->ap; | |
792 | capi_ioctl_struct data; | |
793 | int retval = -EINVAL; | |
794 | void __user *argp = (void __user *)arg; | |
795 | ||
796 | switch (cmd) { | |
797 | case CAPI_REGISTER: | |
798 | { | |
799 | if (ap->applid) | |
800 | return -EEXIST; | |
801 | ||
802 | if (copy_from_user(&cdev->ap.rparam, argp, | |
803 | sizeof(struct capi_register_params))) | |
804 | return -EFAULT; | |
805 | ||
806 | cdev->ap.private = cdev; | |
807 | cdev->ap.recv_message = capi_recv_message; | |
808 | cdev->errcode = capi20_register(ap); | |
809 | if (cdev->errcode) { | |
810 | ap->applid = 0; | |
811 | return -EIO; | |
812 | } | |
813 | } | |
814 | return (int)ap->applid; | |
815 | ||
816 | case CAPI_GET_VERSION: | |
817 | { | |
818 | if (copy_from_user(&data.contr, argp, | |
819 | sizeof(data.contr))) | |
820 | return -EFAULT; | |
821 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
822 | if (cdev->errcode) | |
823 | return -EIO; | |
824 | if (copy_to_user(argp, &data.version, | |
825 | sizeof(data.version))) | |
826 | return -EFAULT; | |
827 | } | |
828 | return 0; | |
829 | ||
830 | case CAPI_GET_SERIAL: | |
831 | { | |
832 | if (copy_from_user(&data.contr, argp, | |
833 | sizeof(data.contr))) | |
834 | return -EFAULT; | |
835 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
836 | if (cdev->errcode) | |
837 | return -EIO; | |
838 | if (copy_to_user(argp, data.serial, | |
839 | sizeof(data.serial))) | |
840 | return -EFAULT; | |
841 | } | |
842 | return 0; | |
843 | case CAPI_GET_PROFILE: | |
844 | { | |
845 | if (copy_from_user(&data.contr, argp, | |
846 | sizeof(data.contr))) | |
847 | return -EFAULT; | |
848 | ||
849 | if (data.contr == 0) { | |
850 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
851 | if (cdev->errcode) | |
852 | return -EIO; | |
853 | ||
854 | retval = copy_to_user(argp, | |
855 | &data.profile.ncontroller, | |
856 | sizeof(data.profile.ncontroller)); | |
857 | ||
858 | } else { | |
859 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
860 | if (cdev->errcode) | |
861 | return -EIO; | |
862 | ||
863 | retval = copy_to_user(argp, &data.profile, | |
864 | sizeof(data.profile)); | |
865 | } | |
866 | if (retval) | |
867 | return -EFAULT; | |
868 | } | |
869 | return 0; | |
870 | ||
871 | case CAPI_GET_MANUFACTURER: | |
872 | { | |
873 | if (copy_from_user(&data.contr, argp, | |
874 | sizeof(data.contr))) | |
875 | return -EFAULT; | |
876 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
877 | if (cdev->errcode) | |
878 | return -EIO; | |
879 | ||
880 | if (copy_to_user(argp, data.manufacturer, | |
881 | sizeof(data.manufacturer))) | |
882 | return -EFAULT; | |
883 | ||
884 | } | |
885 | return 0; | |
886 | case CAPI_GET_ERRCODE: | |
887 | data.errcode = cdev->errcode; | |
888 | cdev->errcode = CAPI_NOERROR; | |
889 | if (arg) { | |
890 | if (copy_to_user(argp, &data.errcode, | |
891 | sizeof(data.errcode))) | |
892 | return -EFAULT; | |
893 | } | |
894 | return data.errcode; | |
895 | ||
896 | case CAPI_INSTALLED: | |
897 | if (capi20_isinstalled() == CAPI_NOERROR) | |
898 | return 0; | |
899 | return -ENXIO; | |
900 | ||
901 | case CAPI_MANUFACTURER_CMD: | |
902 | { | |
903 | struct capi_manufacturer_cmd mcmd; | |
904 | if (!capable(CAP_SYS_ADMIN)) | |
905 | return -EPERM; | |
906 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
907 | return -EFAULT; | |
908 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
909 | } | |
910 | return 0; | |
911 | ||
912 | case CAPI_SET_FLAGS: | |
913 | case CAPI_CLR_FLAGS: | |
914 | { | |
915 | unsigned userflags; | |
916 | if (copy_from_user(&userflags, argp, | |
917 | sizeof(userflags))) | |
918 | return -EFAULT; | |
919 | if (cmd == CAPI_SET_FLAGS) | |
920 | cdev->userflags |= userflags; | |
921 | else | |
922 | cdev->userflags &= ~userflags; | |
923 | } | |
924 | return 0; | |
925 | ||
926 | case CAPI_GET_FLAGS: | |
927 | if (copy_to_user(argp, &cdev->userflags, | |
928 | sizeof(cdev->userflags))) | |
929 | return -EFAULT; | |
930 | return 0; | |
931 | ||
932 | case CAPI_NCCI_OPENCOUNT: | |
933 | { | |
934 | struct capincci *nccip; | |
935 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
936 | struct capiminor *mp; | |
937 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
938 | unsigned ncci; | |
939 | int count = 0; | |
940 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
941 | return -EFAULT; | |
942 | ||
9ea6e5d8 | 943 | mutex_lock(&cdev->ncci_list_mtx); |
2f9e9b6d | 944 | if ((nccip = capincci_find(cdev, (u32) ncci)) == NULL) { |
9ea6e5d8 | 945 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
946 | return 0; |
947 | } | |
948 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
2f9e9b6d | 949 | if ((mp = nccip->minorp) != NULL) { |
1da177e4 LT |
950 | count += atomic_read(&mp->ttyopencount); |
951 | } | |
952 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
9ea6e5d8 | 953 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
954 | return count; |
955 | } | |
956 | return 0; | |
957 | ||
958 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
959 | case CAPI_NCCI_GETUNIT: | |
960 | { | |
961 | struct capincci *nccip; | |
962 | struct capiminor *mp; | |
963 | unsigned ncci; | |
964 | int unit = 0; | |
965 | if (copy_from_user(&ncci, argp, | |
966 | sizeof(ncci))) | |
967 | return -EFAULT; | |
9ea6e5d8 | 968 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 969 | nccip = capincci_find(cdev, (u32) ncci); |
2f9e9b6d | 970 | if (!nccip || (mp = nccip->minorp) == NULL) { |
9ea6e5d8 | 971 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
972 | return -ESRCH; |
973 | } | |
974 | unit = mp->minor; | |
9ea6e5d8 | 975 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
976 | return unit; |
977 | } | |
978 | return 0; | |
979 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
980 | } | |
981 | return -EINVAL; | |
982 | } | |
983 | ||
984 | static int | |
985 | capi_open(struct inode *inode, struct file *file) | |
986 | { | |
a237f3bb JC |
987 | int ret; |
988 | ||
989 | lock_kernel(); | |
1da177e4 | 990 | if (file->private_data) |
a237f3bb JC |
991 | ret = -EEXIST; |
992 | else if ((file->private_data = capidev_alloc()) == NULL) | |
993 | ret = -ENOMEM; | |
994 | else | |
995 | ret = nonseekable_open(inode, file); | |
996 | unlock_kernel(); | |
997 | return ret; | |
1da177e4 LT |
998 | } |
999 | ||
1000 | static int | |
1001 | capi_release(struct inode *inode, struct file *file) | |
1002 | { | |
1003 | struct capidev *cdev = (struct capidev *)file->private_data; | |
1004 | ||
1005 | capidev_free(cdev); | |
1006 | file->private_data = NULL; | |
1007 | ||
1008 | return 0; | |
1009 | } | |
1010 | ||
2b8693c0 | 1011 | static const struct file_operations capi_fops = |
1da177e4 LT |
1012 | { |
1013 | .owner = THIS_MODULE, | |
1014 | .llseek = no_llseek, | |
1015 | .read = capi_read, | |
1016 | .write = capi_write, | |
1017 | .poll = capi_poll, | |
1018 | .ioctl = capi_ioctl, | |
1019 | .open = capi_open, | |
1020 | .release = capi_release, | |
1021 | }; | |
1022 | ||
1023 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1024 | /* -------- tty_operations for capincci ----------------------------- */ | |
1025 | ||
1026 | static int capinc_tty_open(struct tty_struct * tty, struct file * file) | |
1027 | { | |
1028 | struct capiminor *mp; | |
053b47ff | 1029 | unsigned long flags; |
1da177e4 | 1030 | |
2f9e9b6d | 1031 | if ((mp = capiminor_find(iminor(file->f_path.dentry->d_inode))) == NULL) |
1da177e4 | 1032 | return -ENXIO; |
2f9e9b6d | 1033 | if (mp->nccip == NULL) |
1da177e4 LT |
1034 | return -ENXIO; |
1035 | ||
1036 | tty->driver_data = (void *)mp; | |
1037 | ||
053b47ff | 1038 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1039 | if (atomic_read(&mp->ttyopencount) == 0) |
1040 | mp->tty = tty; | |
1041 | atomic_inc(&mp->ttyopencount); | |
1042 | #ifdef _DEBUG_REFCOUNT | |
1043 | printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1044 | #endif | |
1045 | handle_minor_recv(mp); | |
053b47ff | 1046 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1047 | return 0; |
1048 | } | |
1049 | ||
1050 | static void capinc_tty_close(struct tty_struct * tty, struct file * file) | |
1051 | { | |
1052 | struct capiminor *mp; | |
1053 | ||
1054 | mp = (struct capiminor *)tty->driver_data; | |
1055 | if (mp) { | |
1056 | if (atomic_dec_and_test(&mp->ttyopencount)) { | |
1057 | #ifdef _DEBUG_REFCOUNT | |
1058 | printk(KERN_DEBUG "capinc_tty_close lastclose\n"); | |
1059 | #endif | |
1060 | tty->driver_data = NULL; | |
1061 | mp->tty = NULL; | |
1062 | } | |
1063 | #ifdef _DEBUG_REFCOUNT | |
1064 | printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1065 | #endif | |
2f9e9b6d | 1066 | if (mp->nccip == NULL) |
1da177e4 LT |
1067 | capiminor_free(mp); |
1068 | } | |
1069 | ||
1070 | #ifdef _DEBUG_REFCOUNT | |
1071 | printk(KERN_DEBUG "capinc_tty_close\n"); | |
1072 | #endif | |
1073 | } | |
1074 | ||
1075 | static int capinc_tty_write(struct tty_struct * tty, | |
1076 | const unsigned char *buf, int count) | |
1077 | { | |
1078 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1079 | struct sk_buff *skb; | |
053b47ff | 1080 | unsigned long flags; |
1da177e4 LT |
1081 | |
1082 | #ifdef _DEBUG_TTYFUNCS | |
1083 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1084 | #endif | |
1085 | ||
1086 | if (!mp || !mp->nccip) { | |
1087 | #ifdef _DEBUG_TTYFUNCS | |
1088 | printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n"); | |
1089 | #endif | |
1090 | return 0; | |
1091 | } | |
1092 | ||
053b47ff | 1093 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1094 | skb = mp->ttyskb; |
1095 | if (skb) { | |
1096 | mp->ttyskb = NULL; | |
1097 | skb_queue_tail(&mp->outqueue, skb); | |
1098 | mp->outbytes += skb->len; | |
1099 | } | |
1100 | ||
1101 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1102 | if (!skb) { | |
1103 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1104 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1105 | return -ENOMEM; |
1106 | } | |
1107 | ||
1108 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1109 | memcpy(skb_put(skb, count), buf, count); | |
1110 | ||
1111 | skb_queue_tail(&mp->outqueue, skb); | |
1112 | mp->outbytes += skb->len; | |
1113 | (void)handle_minor_send(mp); | |
1114 | (void)handle_minor_recv(mp); | |
053b47ff | 1115 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1116 | return count; |
1117 | } | |
1118 | ||
f2545a75 | 1119 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 LT |
1120 | { |
1121 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1122 | struct sk_buff *skb; | |
053b47ff | 1123 | unsigned long flags; |
f2545a75 | 1124 | int ret = 1; |
1da177e4 LT |
1125 | |
1126 | #ifdef _DEBUG_TTYFUNCS | |
1127 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1128 | #endif | |
1129 | ||
1130 | if (!mp || !mp->nccip) { | |
1131 | #ifdef _DEBUG_TTYFUNCS | |
1132 | printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n"); | |
1133 | #endif | |
f2545a75 | 1134 | return 0; |
1da177e4 LT |
1135 | } |
1136 | ||
053b47ff | 1137 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1138 | skb = mp->ttyskb; |
1139 | if (skb) { | |
1140 | if (skb_tailroom(skb) > 0) { | |
1141 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1142 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1143 | return 1; |
1da177e4 LT |
1144 | } |
1145 | mp->ttyskb = NULL; | |
1146 | skb_queue_tail(&mp->outqueue, skb); | |
1147 | mp->outbytes += skb->len; | |
1148 | (void)handle_minor_send(mp); | |
1149 | } | |
1150 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1151 | if (skb) { | |
1152 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1153 | *(skb_put(skb, 1)) = ch; | |
1154 | mp->ttyskb = skb; | |
1155 | } else { | |
1156 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1157 | ret = 0; |
1da177e4 | 1158 | } |
053b47ff | 1159 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1160 | return ret; |
1da177e4 LT |
1161 | } |
1162 | ||
1163 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1164 | { | |
1165 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1166 | struct sk_buff *skb; | |
053b47ff | 1167 | unsigned long flags; |
1da177e4 LT |
1168 | |
1169 | #ifdef _DEBUG_TTYFUNCS | |
1170 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1171 | #endif | |
1172 | ||
1173 | if (!mp || !mp->nccip) { | |
1174 | #ifdef _DEBUG_TTYFUNCS | |
1175 | printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n"); | |
1176 | #endif | |
1177 | return; | |
1178 | } | |
1179 | ||
053b47ff | 1180 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1181 | skb = mp->ttyskb; |
1182 | if (skb) { | |
1183 | mp->ttyskb = NULL; | |
1184 | skb_queue_tail(&mp->outqueue, skb); | |
1185 | mp->outbytes += skb->len; | |
1186 | (void)handle_minor_send(mp); | |
1187 | } | |
1188 | (void)handle_minor_recv(mp); | |
053b47ff | 1189 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1193 | { | |
1194 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1195 | int room; | |
1196 | if (!mp || !mp->nccip) { | |
1197 | #ifdef _DEBUG_TTYFUNCS | |
1198 | printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n"); | |
1199 | #endif | |
1200 | return 0; | |
1201 | } | |
1202 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); | |
1203 | room *= CAPI_MAX_BLKSIZE; | |
1204 | #ifdef _DEBUG_TTYFUNCS | |
1205 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1206 | #endif | |
1207 | return room; | |
1208 | } | |
1209 | ||
408b664a | 1210 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 LT |
1211 | { |
1212 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1213 | if (!mp || !mp->nccip) { | |
1214 | #ifdef _DEBUG_TTYFUNCS | |
1215 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n"); | |
1216 | #endif | |
1217 | return 0; | |
1218 | } | |
1219 | #ifdef _DEBUG_TTYFUNCS | |
1220 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1221 | mp->outbytes, mp->nack, | |
1222 | skb_queue_len(&mp->outqueue), | |
1223 | skb_queue_len(&mp->inqueue)); | |
1224 | #endif | |
1225 | return mp->outbytes; | |
1226 | } | |
1227 | ||
1228 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1229 | unsigned int cmd, unsigned long arg) | |
1230 | { | |
1231 | int error = 0; | |
1232 | switch (cmd) { | |
1233 | default: | |
1234 | error = n_tty_ioctl (tty, file, cmd, arg); | |
1235 | break; | |
1236 | } | |
1237 | return error; | |
1238 | } | |
1239 | ||
606d099c | 1240 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1241 | { |
1242 | #ifdef _DEBUG_TTYFUNCS | |
1243 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1244 | #endif | |
1245 | } | |
1246 | ||
1247 | static void capinc_tty_throttle(struct tty_struct * tty) | |
1248 | { | |
1249 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1250 | #ifdef _DEBUG_TTYFUNCS | |
1251 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1252 | #endif | |
1253 | if (mp) | |
1254 | mp->ttyinstop = 1; | |
1255 | } | |
1256 | ||
1257 | static void capinc_tty_unthrottle(struct tty_struct * tty) | |
1258 | { | |
1259 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1260 | unsigned long flags; |
1da177e4 LT |
1261 | #ifdef _DEBUG_TTYFUNCS |
1262 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1263 | #endif | |
1264 | if (mp) { | |
053b47ff | 1265 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1266 | mp->ttyinstop = 0; |
1267 | handle_minor_recv(mp); | |
053b47ff | 1268 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1269 | } |
1270 | } | |
1271 | ||
1272 | static void capinc_tty_stop(struct tty_struct *tty) | |
1273 | { | |
1274 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1275 | #ifdef _DEBUG_TTYFUNCS | |
1276 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1277 | #endif | |
1278 | if (mp) { | |
1279 | mp->ttyoutstop = 1; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | static void capinc_tty_start(struct tty_struct *tty) | |
1284 | { | |
1285 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1286 | unsigned long flags; |
1da177e4 LT |
1287 | #ifdef _DEBUG_TTYFUNCS |
1288 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1289 | #endif | |
1290 | if (mp) { | |
053b47ff | 1291 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1292 | mp->ttyoutstop = 0; |
1293 | (void)handle_minor_send(mp); | |
053b47ff | 1294 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1295 | } |
1296 | } | |
1297 | ||
1298 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1299 | { | |
1300 | #ifdef _DEBUG_TTYFUNCS | |
1301 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1302 | #endif | |
1303 | } | |
1304 | ||
9e98966c | 1305 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1306 | { |
1307 | #ifdef _DEBUG_TTYFUNCS | |
1308 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1309 | #endif | |
9e98966c | 1310 | return 0; |
1da177e4 LT |
1311 | } |
1312 | ||
1313 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1314 | { | |
1315 | #ifdef _DEBUG_TTYFUNCS | |
1316 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1317 | #endif | |
1318 | } | |
1319 | ||
1320 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1321 | { | |
1322 | #ifdef _DEBUG_TTYFUNCS | |
1323 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1324 | #endif | |
1325 | } | |
1326 | ||
1327 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1328 | { | |
1329 | #ifdef _DEBUG_TTYFUNCS | |
1330 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1331 | #endif | |
1332 | } | |
1333 | ||
1334 | static int capinc_tty_read_proc(char *page, char **start, off_t off, | |
1335 | int count, int *eof, void *data) | |
1336 | { | |
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | static struct tty_driver *capinc_tty_driver; | |
1341 | ||
b68e31d0 | 1342 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1343 | .open = capinc_tty_open, |
1344 | .close = capinc_tty_close, | |
1345 | .write = capinc_tty_write, | |
1346 | .put_char = capinc_tty_put_char, | |
1347 | .flush_chars = capinc_tty_flush_chars, | |
1348 | .write_room = capinc_tty_write_room, | |
1349 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1350 | .ioctl = capinc_tty_ioctl, | |
1351 | .set_termios = capinc_tty_set_termios, | |
1352 | .throttle = capinc_tty_throttle, | |
1353 | .unthrottle = capinc_tty_unthrottle, | |
1354 | .stop = capinc_tty_stop, | |
1355 | .start = capinc_tty_start, | |
1356 | .hangup = capinc_tty_hangup, | |
1357 | .break_ctl = capinc_tty_break_ctl, | |
1358 | .flush_buffer = capinc_tty_flush_buffer, | |
1359 | .set_ldisc = capinc_tty_set_ldisc, | |
1360 | .send_xchar = capinc_tty_send_xchar, | |
1361 | .read_proc = capinc_tty_read_proc, | |
1362 | }; | |
1363 | ||
1364 | static int capinc_tty_init(void) | |
1365 | { | |
1366 | struct tty_driver *drv; | |
1367 | ||
1368 | if (capi_ttyminors > CAPINC_MAX_PORTS) | |
1369 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1370 | if (capi_ttyminors <= 0) | |
1371 | capi_ttyminors = CAPINC_NR_PORTS; | |
1372 | ||
1373 | drv = alloc_tty_driver(capi_ttyminors); | |
1374 | if (!drv) | |
1375 | return -ENOMEM; | |
1376 | ||
1377 | drv->owner = THIS_MODULE; | |
1378 | drv->driver_name = "capi_nc"; | |
1da177e4 LT |
1379 | drv->name = "capi"; |
1380 | drv->major = capi_ttymajor; | |
1381 | drv->minor_start = 0; | |
1382 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1383 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1384 | drv->init_termios = tty_std_termios; | |
1385 | drv->init_termios.c_iflag = ICRNL; | |
1386 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1387 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1388 | drv->init_termios.c_lflag = 0; | |
1389 | drv->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_RESET_TERMIOS; | |
1390 | tty_set_operations(drv, &capinc_ops); | |
1391 | if (tty_register_driver(drv)) { | |
1392 | put_tty_driver(drv); | |
1393 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); | |
1394 | return -1; | |
1395 | } | |
1396 | capinc_tty_driver = drv; | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | static void capinc_tty_exit(void) | |
1401 | { | |
1402 | struct tty_driver *drv = capinc_tty_driver; | |
1403 | int retval; | |
1404 | if ((retval = tty_unregister_driver(drv))) | |
1405 | printk(KERN_ERR "capi: failed to unregister capi_nc driver (%d)\n", retval); | |
1406 | put_tty_driver(drv); | |
1407 | } | |
1408 | ||
1409 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1410 | ||
1411 | /* -------- /proc functions ----------------------------------------- */ | |
1412 | ||
1413 | /* | |
1414 | * /proc/capi/capi20: | |
1415 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1416 | */ | |
1417 | static int proc_capidev_read_proc(char *page, char **start, off_t off, | |
1418 | int count, int *eof, void *data) | |
1419 | { | |
1420 | struct capidev *cdev; | |
1421 | struct list_head *l; | |
1422 | int len = 0; | |
1423 | ||
1424 | read_lock(&capidev_list_lock); | |
1425 | list_for_each(l, &capidev_list) { | |
1426 | cdev = list_entry(l, struct capidev, list); | |
1427 | len += sprintf(page+len, "0 %d %lu %lu %lu %lu\n", | |
1428 | cdev->ap.applid, | |
1429 | cdev->ap.nrecvctlpkt, | |
1430 | cdev->ap.nrecvdatapkt, | |
1431 | cdev->ap.nsentctlpkt, | |
1432 | cdev->ap.nsentdatapkt); | |
1433 | if (len <= off) { | |
1434 | off -= len; | |
1435 | len = 0; | |
1436 | } else { | |
1437 | if (len-off > count) | |
1438 | goto endloop; | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | endloop: | |
1443 | read_unlock(&capidev_list_lock); | |
1444 | if (len < count) | |
1445 | *eof = 1; | |
1446 | if (len > count) len = count; | |
1447 | if (len < 0) len = 0; | |
1448 | return len; | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * /proc/capi/capi20ncci: | |
1453 | * applid ncci | |
1454 | */ | |
1455 | static int proc_capincci_read_proc(char *page, char **start, off_t off, | |
1456 | int count, int *eof, void *data) | |
1457 | { | |
1458 | struct capidev *cdev; | |
1459 | struct capincci *np; | |
1460 | struct list_head *l; | |
1461 | int len = 0; | |
1462 | ||
1463 | read_lock(&capidev_list_lock); | |
1464 | list_for_each(l, &capidev_list) { | |
1465 | cdev = list_entry(l, struct capidev, list); | |
1466 | for (np=cdev->nccis; np; np = np->next) { | |
1467 | len += sprintf(page+len, "%d 0x%x\n", | |
1468 | cdev->ap.applid, | |
1469 | np->ncci); | |
1470 | if (len <= off) { | |
1471 | off -= len; | |
1472 | len = 0; | |
1473 | } else { | |
1474 | if (len-off > count) | |
1475 | goto endloop; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | endloop: | |
1480 | read_unlock(&capidev_list_lock); | |
1481 | *start = page+off; | |
1482 | if (len < count) | |
1483 | *eof = 1; | |
1484 | if (len>count) len = count; | |
1485 | if (len<0) len = 0; | |
1486 | return len; | |
1487 | } | |
1488 | ||
1489 | static struct procfsentries { | |
1490 | char *name; | |
1491 | mode_t mode; | |
1492 | int (*read_proc)(char *page, char **start, off_t off, | |
1493 | int count, int *eof, void *data); | |
1494 | struct proc_dir_entry *procent; | |
1495 | } procfsentries[] = { | |
1496 | /* { "capi", S_IFDIR, 0 }, */ | |
1497 | { "capi/capi20", 0 , proc_capidev_read_proc }, | |
1498 | { "capi/capi20ncci", 0 , proc_capincci_read_proc }, | |
1499 | }; | |
1500 | ||
1501 | static void __init proc_init(void) | |
1502 | { | |
fd863db9 | 1503 | int nelem = ARRAY_SIZE(procfsentries); |
1da177e4 LT |
1504 | int i; |
1505 | ||
1506 | for (i=0; i < nelem; i++) { | |
1507 | struct procfsentries *p = procfsentries + i; | |
1508 | p->procent = create_proc_entry(p->name, p->mode, NULL); | |
1509 | if (p->procent) p->procent->read_proc = p->read_proc; | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | static void __exit proc_exit(void) | |
1514 | { | |
fd863db9 | 1515 | int nelem = ARRAY_SIZE(procfsentries); |
1da177e4 LT |
1516 | int i; |
1517 | ||
1518 | for (i=nelem-1; i >= 0; i--) { | |
1519 | struct procfsentries *p = procfsentries + i; | |
1520 | if (p->procent) { | |
1521 | remove_proc_entry(p->name, NULL); | |
1522 | p->procent = NULL; | |
1523 | } | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | /* -------- init function and module interface ---------------------- */ | |
1528 | ||
1529 | ||
1530 | static char rev[32]; | |
1531 | ||
1532 | static int __init capi_init(void) | |
1533 | { | |
1534 | char *p; | |
1535 | char *compileinfo; | |
6d9eac34 | 1536 | int major_ret; |
1da177e4 | 1537 | |
2f9e9b6d | 1538 | if ((p = strchr(revision, ':')) != NULL && p[1]) { |
1da177e4 | 1539 | strlcpy(rev, p + 2, sizeof(rev)); |
2f9e9b6d | 1540 | if ((p = strchr(rev, '$')) != NULL && p > rev) |
1da177e4 LT |
1541 | *(p-1) = 0; |
1542 | } else | |
1543 | strcpy(rev, "1.0"); | |
1544 | ||
6d9eac34 AM |
1545 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1546 | if (major_ret < 0) { | |
1da177e4 | 1547 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1548 | return major_ret; |
1da177e4 | 1549 | } |
56b22935 | 1550 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1551 | if (IS_ERR(capi_class)) { |
1552 | unregister_chrdev(capi_major, "capi20"); | |
1553 | return PTR_ERR(capi_class); | |
1554 | } | |
1555 | ||
d78b0368 | 1556 | device_create(capi_class, NULL, MKDEV(capi_major, 0), "capi"); |
1da177e4 LT |
1557 | |
1558 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1559 | if (capinc_tty_init() < 0) { | |
d78b0368 | 1560 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1561 | class_destroy(capi_class); |
1da177e4 LT |
1562 | unregister_chrdev(capi_major, "capi20"); |
1563 | return -ENOMEM; | |
1564 | } | |
1565 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1566 | ||
1567 | proc_init(); | |
1568 | ||
1569 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1570 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) | |
1571 | compileinfo = " (middleware+capifs)"; | |
1572 | #else | |
1573 | compileinfo = " (no capifs)"; | |
1574 | #endif | |
1575 | #else | |
1576 | compileinfo = " (no middleware)"; | |
1577 | #endif | |
1578 | printk(KERN_NOTICE "capi20: Rev %s: started up with major %d%s\n", | |
1579 | rev, capi_major, compileinfo); | |
1580 | ||
1581 | return 0; | |
1582 | } | |
1583 | ||
1584 | static void __exit capi_exit(void) | |
1585 | { | |
1586 | proc_exit(); | |
1587 | ||
d78b0368 | 1588 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1589 | class_destroy(capi_class); |
1da177e4 | 1590 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 LT |
1591 | |
1592 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1593 | capinc_tty_exit(); | |
1594 | #endif | |
1595 | printk(KERN_NOTICE "capi: Rev %s: unloaded\n", rev); | |
1596 | } | |
1597 | ||
1598 | module_init(capi_init); | |
1599 | module_exit(capi_exit); |