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 { |
0159d549 JK |
86 | struct kref kref; |
87 | ||
1da177e4 LT |
88 | struct capincci *nccip; |
89 | unsigned int minor; | |
90926f0e | 90 | struct dentry *capifs_dentry; |
1da177e4 LT |
91 | |
92 | struct capi20_appl *ap; | |
93 | u32 ncci; | |
94 | u16 datahandle; | |
95 | u16 msgid; | |
96 | ||
97 | struct tty_struct *tty; | |
98 | int ttyinstop; | |
99 | int ttyoutstop; | |
100 | struct sk_buff *ttyskb; | |
101 | atomic_t ttyopencount; | |
102 | ||
103 | struct sk_buff_head inqueue; | |
104 | int inbytes; | |
105 | struct sk_buff_head outqueue; | |
106 | int outbytes; | |
107 | ||
108 | /* transmit path */ | |
6aa65472 | 109 | struct list_head ackqueue; |
1da177e4 | 110 | int nack; |
6aa65472 | 111 | spinlock_t ackqlock; |
1da177e4 | 112 | }; |
1da177e4 | 113 | |
053b47ff MB |
114 | /* FIXME: The following lock is a sledgehammer-workaround to a |
115 | * locking issue with the capiminor (and maybe other) data structure(s). | |
116 | * Access to this data is done in a racy way and crashes the machine with | |
117 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
118 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
119 | * The correct (and scalable) fix for the issue seems to require | |
120 | * an API change to the drivers... . */ | |
121 | static DEFINE_SPINLOCK(workaround_lock); | |
122 | ||
1da177e4 | 123 | struct capincci { |
884f5c44 | 124 | struct list_head list; |
1da177e4 LT |
125 | u32 ncci; |
126 | struct capidev *cdev; | |
127 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
128 | struct capiminor *minorp; | |
129 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
130 | }; | |
131 | ||
132 | struct capidev { | |
133 | struct list_head list; | |
134 | struct capi20_appl ap; | |
135 | u16 errcode; | |
136 | unsigned userflags; | |
137 | ||
138 | struct sk_buff_head recvqueue; | |
139 | wait_queue_head_t recvwait; | |
140 | ||
884f5c44 | 141 | struct list_head nccis; |
1da177e4 | 142 | |
05b41494 | 143 | struct mutex lock; |
1da177e4 LT |
144 | }; |
145 | ||
146 | /* -------- global variables ---------------------------------------- */ | |
147 | ||
b8f433dc | 148 | static DEFINE_MUTEX(capidev_list_lock); |
1da177e4 LT |
149 | static LIST_HEAD(capidev_list); |
150 | ||
151 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
501c87a9 | 152 | |
81d17fe5 JK |
153 | static DEFINE_RWLOCK(capiminors_lock); |
154 | static struct capiminor **capiminors; | |
1da177e4 | 155 | |
40fb2d0d JK |
156 | static struct tty_driver *capinc_tty_driver; |
157 | ||
1da177e4 LT |
158 | /* -------- datahandles --------------------------------------------- */ |
159 | ||
501c87a9 | 160 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
1da177e4 | 161 | { |
6aa65472 MB |
162 | struct datahandle_queue *n; |
163 | unsigned long flags; | |
1da177e4 LT |
164 | |
165 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
166 | if (unlikely(!n)) { |
167 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
168 | return -1; | |
1da177e4 | 169 | } |
1da177e4 | 170 | n->datahandle = datahandle; |
6aa65472 MB |
171 | INIT_LIST_HEAD(&n->list); |
172 | spin_lock_irqsave(&mp->ackqlock, flags); | |
173 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 174 | mp->nack++; |
6aa65472 | 175 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
176 | return 0; |
177 | } | |
178 | ||
179 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
180 | { | |
6aa65472 MB |
181 | struct datahandle_queue *p, *tmp; |
182 | unsigned long flags; | |
1da177e4 | 183 | |
6aa65472 MB |
184 | spin_lock_irqsave(&mp->ackqlock, flags); |
185 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
186 | if (p->datahandle == datahandle) { | |
187 | list_del(&p->list); | |
1da177e4 LT |
188 | kfree(p); |
189 | mp->nack--; | |
6aa65472 | 190 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
191 | return 0; |
192 | } | |
193 | } | |
6aa65472 | 194 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
195 | return -1; |
196 | } | |
197 | ||
198 | static void capiminor_del_all_ack(struct capiminor *mp) | |
199 | { | |
6aa65472 MB |
200 | struct datahandle_queue *p, *tmp; |
201 | unsigned long flags; | |
1da177e4 | 202 | |
6aa65472 MB |
203 | spin_lock_irqsave(&mp->ackqlock, flags); |
204 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
205 | list_del(&p->list); | |
1da177e4 LT |
206 | kfree(p); |
207 | mp->nack--; | |
208 | } | |
6aa65472 | 209 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
210 | } |
211 | ||
212 | ||
213 | /* -------- struct capiminor ---------------------------------------- */ | |
214 | ||
215 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) | |
216 | { | |
81d17fe5 | 217 | struct capiminor *mp; |
40fb2d0d | 218 | struct device *dev; |
81d17fe5 | 219 | unsigned int minor; |
1da177e4 LT |
220 | unsigned long flags; |
221 | ||
54f0fad3 | 222 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
1da177e4 LT |
223 | if (!mp) { |
224 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
225 | return NULL; | |
226 | } | |
227 | ||
0159d549 JK |
228 | kref_init(&mp->kref); |
229 | ||
1da177e4 LT |
230 | mp->ap = ap; |
231 | mp->ncci = ncci; | |
232 | mp->msgid = 0; | |
233 | atomic_set(&mp->ttyopencount,0); | |
6aa65472 MB |
234 | INIT_LIST_HEAD(&mp->ackqueue); |
235 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
236 | |
237 | skb_queue_head_init(&mp->inqueue); | |
238 | skb_queue_head_init(&mp->outqueue); | |
239 | ||
81d17fe5 JK |
240 | /* Allocate the least unused minor number. */ |
241 | write_lock_irqsave(&capiminors_lock, flags); | |
242 | for (minor = 0; minor < capi_ttyminors; minor++) | |
243 | if (!capiminors[minor]) { | |
244 | capiminors[minor] = mp; | |
245 | break; | |
1da177e4 | 246 | } |
81d17fe5 | 247 | write_unlock_irqrestore(&capiminors_lock, flags); |
1da177e4 | 248 | |
81d17fe5 | 249 | if (minor == capi_ttyminors) { |
1da177e4 | 250 | printk(KERN_NOTICE "capi: out of minors\n"); |
40fb2d0d | 251 | goto err_out1; |
1da177e4 LT |
252 | } |
253 | ||
81d17fe5 JK |
254 | mp->minor = minor; |
255 | ||
40fb2d0d JK |
256 | dev = tty_register_device(capinc_tty_driver, minor, NULL); |
257 | if (IS_ERR(dev)) | |
258 | goto err_out2; | |
259 | ||
1da177e4 | 260 | return mp; |
40fb2d0d JK |
261 | |
262 | err_out2: | |
263 | write_lock_irqsave(&capiminors_lock, flags); | |
264 | capiminors[minor] = NULL; | |
265 | write_unlock_irqrestore(&capiminors_lock, flags); | |
266 | ||
267 | err_out1: | |
268 | kfree(mp); | |
269 | return NULL; | |
1da177e4 LT |
270 | } |
271 | ||
0159d549 | 272 | static void capiminor_destroy(struct kref *kref) |
1da177e4 | 273 | { |
0159d549 | 274 | struct capiminor *mp = container_of(kref, struct capiminor, kref); |
1da177e4 | 275 | |
d46604e1 | 276 | kfree_skb(mp->ttyskb); |
1da177e4 LT |
277 | skb_queue_purge(&mp->inqueue); |
278 | skb_queue_purge(&mp->outqueue); | |
279 | capiminor_del_all_ack(mp); | |
280 | kfree(mp); | |
281 | } | |
282 | ||
40fb2d0d | 283 | static struct capiminor *capiminor_get(unsigned int minor) |
1da177e4 | 284 | { |
81d17fe5 | 285 | struct capiminor *mp; |
1da177e4 | 286 | |
81d17fe5 JK |
287 | read_lock(&capiminors_lock); |
288 | mp = capiminors[minor]; | |
0159d549 JK |
289 | if (mp) |
290 | kref_get(&mp->kref); | |
81d17fe5 JK |
291 | read_unlock(&capiminors_lock); |
292 | ||
293 | return mp; | |
1da177e4 | 294 | } |
1da177e4 | 295 | |
0159d549 JK |
296 | static inline void capiminor_put(struct capiminor *mp) |
297 | { | |
298 | kref_put(&mp->kref, capiminor_destroy); | |
299 | } | |
300 | ||
301 | static void capiminor_free(struct capiminor *mp) | |
302 | { | |
303 | unsigned long flags; | |
304 | ||
305 | tty_unregister_device(capinc_tty_driver, mp->minor); | |
306 | ||
307 | write_lock_irqsave(&capiminors_lock, flags); | |
308 | capiminors[mp->minor] = NULL; | |
309 | write_unlock_irqrestore(&capiminors_lock, flags); | |
310 | ||
311 | capiminor_put(mp); | |
312 | } | |
313 | ||
1da177e4 LT |
314 | /* -------- struct capincci ----------------------------------------- */ |
315 | ||
501c87a9 | 316 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
1da177e4 | 317 | { |
501c87a9 | 318 | struct capiminor *mp; |
e95ac143 | 319 | dev_t device; |
1da177e4 | 320 | |
501c87a9 JK |
321 | if (!(cdev->userflags & CAPIFLAG_HIGHJACKING)) |
322 | return; | |
323 | ||
324 | mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci); | |
1da177e4 LT |
325 | if (mp) { |
326 | mp->nccip = np; | |
327 | #ifdef _DEBUG_REFCOUNT | |
328 | printk(KERN_DEBUG "set mp->nccip\n"); | |
329 | #endif | |
e95ac143 JK |
330 | device = MKDEV(capinc_tty_driver->major, mp->minor); |
331 | mp->capifs_dentry = capifs_new_ncci(mp->minor, device); | |
1da177e4 | 332 | } |
501c87a9 JK |
333 | } |
334 | ||
335 | static void capincci_free_minor(struct capincci *np) | |
336 | { | |
337 | struct capiminor *mp = np->minorp; | |
338 | ||
339 | if (mp) { | |
340 | capifs_free_ncci(mp->capifs_dentry); | |
341 | if (mp->tty) { | |
342 | mp->nccip = NULL; | |
343 | #ifdef _DEBUG_REFCOUNT | |
344 | printk(KERN_DEBUG "reset mp->nccip\n"); | |
345 | #endif | |
346 | tty_hangup(mp->tty); | |
347 | } else { | |
348 | capiminor_free(mp); | |
349 | } | |
350 | } | |
351 | } | |
352 | ||
353 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
354 | { | |
355 | struct capiminor *mp = np->minorp; | |
356 | ||
357 | return mp ? atomic_read(&mp->ttyopencount) : 0; | |
358 | } | |
359 | ||
360 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
361 | ||
362 | static inline void | |
363 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } | |
364 | static inline void capincci_free_minor(struct capincci *np) { } | |
365 | ||
366 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
367 | { | |
368 | return 0; | |
369 | } | |
370 | ||
371 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
372 | ||
373 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) | |
374 | { | |
884f5c44 | 375 | struct capincci *np; |
501c87a9 | 376 | |
54f0fad3 | 377 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
501c87a9 JK |
378 | if (!np) |
379 | return NULL; | |
380 | np->ncci = ncci; | |
381 | np->cdev = cdev; | |
382 | ||
383 | capincci_alloc_minor(cdev, np); | |
384 | ||
884f5c44 JK |
385 | list_add_tail(&np->list, &cdev->nccis); |
386 | ||
387 | return np; | |
1da177e4 LT |
388 | } |
389 | ||
390 | static void capincci_free(struct capidev *cdev, u32 ncci) | |
391 | { | |
884f5c44 | 392 | struct capincci *np, *tmp; |
1da177e4 | 393 | |
884f5c44 | 394 | list_for_each_entry_safe(np, tmp, &cdev->nccis, list) |
1da177e4 | 395 | if (ncci == 0xffffffff || np->ncci == ncci) { |
501c87a9 | 396 | capincci_free_minor(np); |
884f5c44 | 397 | list_del(&np->list); |
1da177e4 | 398 | kfree(np); |
1da177e4 | 399 | } |
1da177e4 LT |
400 | } |
401 | ||
402 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) | |
403 | { | |
884f5c44 | 404 | struct capincci *np; |
1da177e4 | 405 | |
884f5c44 JK |
406 | list_for_each_entry(np, &cdev->nccis, list) |
407 | if (np->ncci == ncci) | |
408 | return np; | |
409 | return NULL; | |
1da177e4 LT |
410 | } |
411 | ||
1da177e4 LT |
412 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
413 | /* -------- handle data queue --------------------------------------- */ | |
414 | ||
415 | static struct sk_buff * | |
416 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) | |
417 | { | |
418 | struct sk_buff *nskb; | |
419 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC); | |
420 | if (nskb) { | |
421 | u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2); | |
422 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); | |
423 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); | |
424 | capimsg_setu16(s, 2, mp->ap->applid); | |
425 | capimsg_setu8 (s, 4, CAPI_DATA_B3); | |
426 | capimsg_setu8 (s, 5, CAPI_RESP); | |
427 | capimsg_setu16(s, 6, mp->msgid++); | |
428 | capimsg_setu32(s, 8, mp->ncci); | |
429 | capimsg_setu16(s, 12, datahandle); | |
430 | } | |
431 | return nskb; | |
432 | } | |
433 | ||
434 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) | |
435 | { | |
436 | struct sk_buff *nskb; | |
437 | int datalen; | |
438 | u16 errcode, datahandle; | |
439 | struct tty_ldisc *ld; | |
440 | ||
441 | datalen = skb->len - CAPIMSG_LEN(skb->data); | |
442 | if (mp->tty == NULL) | |
443 | { | |
444 | #ifdef _DEBUG_DATAFLOW | |
445 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
446 | #endif | |
447 | return -1; | |
448 | } | |
449 | ||
450 | ld = tty_ldisc_ref(mp->tty); | |
451 | if (ld == NULL) | |
452 | return -1; | |
a352def2 | 453 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
454 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
455 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
456 | #endif | |
457 | goto bad; | |
458 | } | |
459 | if (mp->ttyinstop) { | |
460 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
461 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
462 | #endif | |
463 | goto bad; | |
464 | } | |
33f0f88f | 465 | if (mp->tty->receive_room < datalen) { |
1da177e4 LT |
466 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
467 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
468 | #endif | |
469 | goto bad; | |
470 | } | |
2f9e9b6d | 471 | if ((nskb = gen_data_b3_resp_for(mp, skb)) == NULL) { |
1da177e4 LT |
472 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
473 | goto bad; | |
474 | } | |
475 | datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4); | |
476 | errcode = capi20_put_message(mp->ap, nskb); | |
477 | if (errcode != CAPI_NOERROR) { | |
478 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", | |
479 | errcode); | |
480 | kfree_skb(nskb); | |
481 | goto bad; | |
482 | } | |
483 | (void)skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
484 | #ifdef _DEBUG_DATAFLOW | |
485 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
486 | datahandle, skb->len); | |
487 | #endif | |
a352def2 | 488 | ld->ops->receive_buf(mp->tty, skb->data, NULL, skb->len); |
1da177e4 LT |
489 | kfree_skb(skb); |
490 | tty_ldisc_deref(ld); | |
491 | return 0; | |
492 | bad: | |
493 | tty_ldisc_deref(ld); | |
494 | return -1; | |
495 | } | |
496 | ||
497 | static void handle_minor_recv(struct capiminor *mp) | |
498 | { | |
499 | struct sk_buff *skb; | |
2f9e9b6d | 500 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) { |
1da177e4 LT |
501 | unsigned int len = skb->len; |
502 | mp->inbytes -= len; | |
503 | if (handle_recv_skb(mp, skb) < 0) { | |
504 | skb_queue_head(&mp->inqueue, skb); | |
505 | mp->inbytes += len; | |
506 | return; | |
507 | } | |
508 | } | |
509 | } | |
510 | ||
511 | static int handle_minor_send(struct capiminor *mp) | |
512 | { | |
513 | struct sk_buff *skb; | |
514 | u16 len; | |
515 | int count = 0; | |
516 | u16 errcode; | |
517 | u16 datahandle; | |
518 | ||
519 | if (mp->tty && mp->ttyoutstop) { | |
520 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
521 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
522 | #endif | |
523 | return 0; | |
524 | } | |
525 | ||
2f9e9b6d | 526 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
1da177e4 LT |
527 | datahandle = mp->datahandle; |
528 | len = (u16)skb->len; | |
529 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
530 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
531 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
532 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
533 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
534 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
535 | capimsg_setu16(skb->data, 6, mp->msgid++); | |
536 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ | |
5e6c20a9 | 537 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
538 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
539 | capimsg_setu16(skb->data, 18, datahandle); | |
540 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
541 | ||
501c87a9 | 542 | if (capiminor_add_ack(mp, datahandle) < 0) { |
1da177e4 LT |
543 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
544 | skb_queue_head(&mp->outqueue, skb); | |
545 | return count; | |
546 | } | |
547 | errcode = capi20_put_message(mp->ap, skb); | |
548 | if (errcode == CAPI_NOERROR) { | |
549 | mp->datahandle++; | |
550 | count++; | |
551 | mp->outbytes -= len; | |
552 | #ifdef _DEBUG_DATAFLOW | |
553 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
554 | datahandle, len); | |
555 | #endif | |
556 | continue; | |
557 | } | |
558 | capiminor_del_ack(mp, datahandle); | |
559 | ||
560 | if (errcode == CAPI_SENDQUEUEFULL) { | |
561 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
562 | skb_queue_head(&mp->outqueue, skb); | |
563 | break; | |
564 | } | |
565 | ||
566 | /* ups, drop packet */ | |
567 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
568 | mp->outbytes -= len; | |
569 | kfree_skb(skb); | |
570 | } | |
571 | return count; | |
572 | } | |
573 | ||
574 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
575 | /* -------- function called by lower level -------------------------- */ | |
576 | ||
577 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
578 | { | |
579 | struct capidev *cdev = ap->private; | |
580 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
581 | struct capiminor *mp; | |
582 | u16 datahandle; | |
583 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
584 | struct capincci *np; | |
053b47ff | 585 | unsigned long flags; |
1da177e4 | 586 | |
05b41494 JK |
587 | mutex_lock(&cdev->lock); |
588 | ||
1da177e4 LT |
589 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
590 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
05b41494 | 591 | if ((info & 0xff00) == 0) |
1da177e4 | 592 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
1da177e4 | 593 | } |
05b41494 | 594 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
1da177e4 | 595 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 596 | |
053b47ff | 597 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
598 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
599 | skb_queue_tail(&cdev->recvqueue, skb); | |
600 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 601 | goto unlock_out; |
1da177e4 | 602 | } |
05b41494 JK |
603 | |
604 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); | |
1da177e4 LT |
605 | if (!np) { |
606 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
607 | skb_queue_tail(&cdev->recvqueue, skb); | |
608 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 609 | goto unlock_out; |
1da177e4 | 610 | } |
501c87a9 | 611 | |
1da177e4 LT |
612 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
613 | skb_queue_tail(&cdev->recvqueue, skb); | |
614 | wake_up_interruptible(&cdev->recvwait); | |
501c87a9 | 615 | |
1da177e4 | 616 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
501c87a9 | 617 | |
1da177e4 LT |
618 | mp = np->minorp; |
619 | if (!mp) { | |
620 | skb_queue_tail(&cdev->recvqueue, skb); | |
621 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 622 | goto unlock_out; |
1da177e4 | 623 | } |
1da177e4 | 624 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
1da177e4 LT |
625 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); |
626 | #ifdef _DEBUG_DATAFLOW | |
627 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
628 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
629 | #endif | |
630 | skb_queue_tail(&mp->inqueue, skb); | |
631 | mp->inbytes += skb->len; | |
632 | handle_minor_recv(mp); | |
633 | ||
634 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
635 | ||
636 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
637 | #ifdef _DEBUG_DATAFLOW | |
638 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
639 | datahandle, | |
640 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
641 | #endif | |
642 | kfree_skb(skb); | |
643 | (void)capiminor_del_ack(mp, datahandle); | |
644 | if (mp->tty) | |
645 | tty_wakeup(mp->tty); | |
646 | (void)handle_minor_send(mp); | |
647 | ||
648 | } else { | |
649 | /* ups, let capi application handle it :-) */ | |
650 | skb_queue_tail(&cdev->recvqueue, skb); | |
651 | wake_up_interruptible(&cdev->recvwait); | |
652 | } | |
653 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
501c87a9 | 654 | |
05b41494 | 655 | unlock_out: |
053b47ff | 656 | spin_unlock_irqrestore(&workaround_lock, flags); |
05b41494 | 657 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
658 | } |
659 | ||
660 | /* -------- file_operations for capidev ----------------------------- */ | |
661 | ||
662 | static ssize_t | |
663 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
664 | { | |
665 | struct capidev *cdev = (struct capidev *)file->private_data; | |
666 | struct sk_buff *skb; | |
667 | size_t copied; | |
28a1dbb6 | 668 | int err; |
1da177e4 LT |
669 | |
670 | if (!cdev->ap.applid) | |
671 | return -ENODEV; | |
672 | ||
28a1dbb6 JK |
673 | skb = skb_dequeue(&cdev->recvqueue); |
674 | if (!skb) { | |
1da177e4 LT |
675 | if (file->f_flags & O_NONBLOCK) |
676 | return -EAGAIN; | |
28a1dbb6 JK |
677 | err = wait_event_interruptible(cdev->recvwait, |
678 | (skb = skb_dequeue(&cdev->recvqueue))); | |
679 | if (err) | |
680 | return err; | |
1da177e4 LT |
681 | } |
682 | if (skb->len > count) { | |
683 | skb_queue_head(&cdev->recvqueue, skb); | |
684 | return -EMSGSIZE; | |
685 | } | |
686 | if (copy_to_user(buf, skb->data, skb->len)) { | |
687 | skb_queue_head(&cdev->recvqueue, skb); | |
688 | return -EFAULT; | |
689 | } | |
690 | copied = skb->len; | |
691 | ||
692 | kfree_skb(skb); | |
693 | ||
694 | return copied; | |
695 | } | |
696 | ||
697 | static ssize_t | |
698 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
699 | { | |
700 | struct capidev *cdev = (struct capidev *)file->private_data; | |
701 | struct sk_buff *skb; | |
702 | u16 mlen; | |
703 | ||
704 | if (!cdev->ap.applid) | |
705 | return -ENODEV; | |
706 | ||
707 | skb = alloc_skb(count, GFP_USER); | |
708 | if (!skb) | |
709 | return -ENOMEM; | |
710 | ||
711 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
712 | kfree_skb(skb); | |
713 | return -EFAULT; | |
714 | } | |
715 | mlen = CAPIMSG_LEN(skb->data); | |
716 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
717 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
718 | kfree_skb(skb); | |
719 | return -EINVAL; | |
720 | } | |
721 | } else { | |
722 | if (mlen != count) { | |
723 | kfree_skb(skb); | |
724 | return -EINVAL; | |
725 | } | |
726 | } | |
727 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
728 | ||
729 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
05b41494 | 730 | mutex_lock(&cdev->lock); |
1da177e4 | 731 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 732 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
733 | } |
734 | ||
735 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
736 | ||
737 | if (cdev->errcode) { | |
738 | kfree_skb(skb); | |
739 | return -EIO; | |
740 | } | |
741 | return count; | |
742 | } | |
743 | ||
744 | static unsigned int | |
745 | capi_poll(struct file *file, poll_table * wait) | |
746 | { | |
747 | struct capidev *cdev = (struct capidev *)file->private_data; | |
748 | unsigned int mask = 0; | |
749 | ||
750 | if (!cdev->ap.applid) | |
751 | return POLLERR; | |
752 | ||
753 | poll_wait(file, &(cdev->recvwait), wait); | |
754 | mask = POLLOUT | POLLWRNORM; | |
755 | if (!skb_queue_empty(&cdev->recvqueue)) | |
756 | mask |= POLLIN | POLLRDNORM; | |
757 | return mask; | |
758 | } | |
759 | ||
760 | static int | |
761 | capi_ioctl(struct inode *inode, struct file *file, | |
762 | unsigned int cmd, unsigned long arg) | |
763 | { | |
764 | struct capidev *cdev = file->private_data; | |
1da177e4 LT |
765 | capi_ioctl_struct data; |
766 | int retval = -EINVAL; | |
767 | void __user *argp = (void __user *)arg; | |
768 | ||
769 | switch (cmd) { | |
770 | case CAPI_REGISTER: | |
05b41494 | 771 | mutex_lock(&cdev->lock); |
1da177e4 | 772 | |
05b41494 JK |
773 | if (cdev->ap.applid) { |
774 | retval = -EEXIST; | |
775 | goto register_out; | |
776 | } | |
777 | if (copy_from_user(&cdev->ap.rparam, argp, | |
778 | sizeof(struct capi_register_params))) { | |
779 | retval = -EFAULT; | |
780 | goto register_out; | |
781 | } | |
782 | cdev->ap.private = cdev; | |
783 | cdev->ap.recv_message = capi_recv_message; | |
784 | cdev->errcode = capi20_register(&cdev->ap); | |
785 | retval = (int)cdev->ap.applid; | |
786 | if (cdev->errcode) { | |
787 | cdev->ap.applid = 0; | |
788 | retval = -EIO; | |
1da177e4 | 789 | } |
05b41494 JK |
790 | |
791 | register_out: | |
792 | mutex_unlock(&cdev->lock); | |
793 | return retval; | |
1da177e4 LT |
794 | |
795 | case CAPI_GET_VERSION: | |
796 | { | |
797 | if (copy_from_user(&data.contr, argp, | |
798 | sizeof(data.contr))) | |
799 | return -EFAULT; | |
800 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
801 | if (cdev->errcode) | |
802 | return -EIO; | |
803 | if (copy_to_user(argp, &data.version, | |
804 | sizeof(data.version))) | |
805 | return -EFAULT; | |
806 | } | |
807 | return 0; | |
808 | ||
809 | case CAPI_GET_SERIAL: | |
810 | { | |
811 | if (copy_from_user(&data.contr, argp, | |
812 | sizeof(data.contr))) | |
813 | return -EFAULT; | |
814 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
815 | if (cdev->errcode) | |
816 | return -EIO; | |
817 | if (copy_to_user(argp, data.serial, | |
818 | sizeof(data.serial))) | |
819 | return -EFAULT; | |
820 | } | |
821 | return 0; | |
822 | case CAPI_GET_PROFILE: | |
823 | { | |
824 | if (copy_from_user(&data.contr, argp, | |
825 | sizeof(data.contr))) | |
826 | return -EFAULT; | |
827 | ||
828 | if (data.contr == 0) { | |
829 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
830 | if (cdev->errcode) | |
831 | return -EIO; | |
832 | ||
833 | retval = copy_to_user(argp, | |
834 | &data.profile.ncontroller, | |
835 | sizeof(data.profile.ncontroller)); | |
836 | ||
837 | } else { | |
838 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
839 | if (cdev->errcode) | |
840 | return -EIO; | |
841 | ||
842 | retval = copy_to_user(argp, &data.profile, | |
843 | sizeof(data.profile)); | |
844 | } | |
845 | if (retval) | |
846 | return -EFAULT; | |
847 | } | |
848 | return 0; | |
849 | ||
850 | case CAPI_GET_MANUFACTURER: | |
851 | { | |
852 | if (copy_from_user(&data.contr, argp, | |
853 | sizeof(data.contr))) | |
854 | return -EFAULT; | |
855 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
856 | if (cdev->errcode) | |
857 | return -EIO; | |
858 | ||
859 | if (copy_to_user(argp, data.manufacturer, | |
860 | sizeof(data.manufacturer))) | |
861 | return -EFAULT; | |
862 | ||
863 | } | |
864 | return 0; | |
865 | case CAPI_GET_ERRCODE: | |
866 | data.errcode = cdev->errcode; | |
867 | cdev->errcode = CAPI_NOERROR; | |
868 | if (arg) { | |
869 | if (copy_to_user(argp, &data.errcode, | |
870 | sizeof(data.errcode))) | |
871 | return -EFAULT; | |
872 | } | |
873 | return data.errcode; | |
874 | ||
875 | case CAPI_INSTALLED: | |
876 | if (capi20_isinstalled() == CAPI_NOERROR) | |
877 | return 0; | |
878 | return -ENXIO; | |
879 | ||
880 | case CAPI_MANUFACTURER_CMD: | |
881 | { | |
882 | struct capi_manufacturer_cmd mcmd; | |
883 | if (!capable(CAP_SYS_ADMIN)) | |
884 | return -EPERM; | |
885 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
886 | return -EFAULT; | |
887 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
888 | } | |
889 | return 0; | |
890 | ||
891 | case CAPI_SET_FLAGS: | |
05b41494 JK |
892 | case CAPI_CLR_FLAGS: { |
893 | unsigned userflags; | |
894 | ||
895 | if (copy_from_user(&userflags, argp, sizeof(userflags))) | |
896 | return -EFAULT; | |
1da177e4 | 897 | |
05b41494 JK |
898 | mutex_lock(&cdev->lock); |
899 | if (cmd == CAPI_SET_FLAGS) | |
900 | cdev->userflags |= userflags; | |
901 | else | |
902 | cdev->userflags &= ~userflags; | |
903 | mutex_unlock(&cdev->lock); | |
904 | return 0; | |
905 | } | |
1da177e4 LT |
906 | case CAPI_GET_FLAGS: |
907 | if (copy_to_user(argp, &cdev->userflags, | |
908 | sizeof(cdev->userflags))) | |
909 | return -EFAULT; | |
910 | return 0; | |
911 | ||
05b41494 JK |
912 | case CAPI_NCCI_OPENCOUNT: { |
913 | struct capincci *nccip; | |
914 | unsigned ncci; | |
915 | int count = 0; | |
1da177e4 | 916 | |
05b41494 JK |
917 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
918 | return -EFAULT; | |
919 | ||
920 | mutex_lock(&cdev->lock); | |
921 | nccip = capincci_find(cdev, (u32)ncci); | |
922 | if (nccip) | |
923 | count = capincci_minor_opencount(nccip); | |
924 | mutex_unlock(&cdev->lock); | |
925 | return count; | |
926 | } | |
1da177e4 LT |
927 | |
928 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
05b41494 JK |
929 | case CAPI_NCCI_GETUNIT: { |
930 | struct capincci *nccip; | |
931 | struct capiminor *mp; | |
932 | unsigned ncci; | |
933 | int unit = -ESRCH; | |
934 | ||
935 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
936 | return -EFAULT; | |
937 | ||
938 | mutex_lock(&cdev->lock); | |
939 | nccip = capincci_find(cdev, (u32)ncci); | |
940 | if (nccip) { | |
941 | mp = nccip->minorp; | |
942 | if (mp) | |
943 | unit = mp->minor; | |
1da177e4 | 944 | } |
05b41494 JK |
945 | mutex_unlock(&cdev->lock); |
946 | return unit; | |
947 | } | |
1da177e4 | 948 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
05b41494 JK |
949 | |
950 | default: | |
951 | return -EINVAL; | |
1da177e4 | 952 | } |
1da177e4 LT |
953 | } |
954 | ||
eca39dd8 | 955 | static int capi_open(struct inode *inode, struct file *file) |
1da177e4 | 956 | { |
eca39dd8 JK |
957 | struct capidev *cdev; |
958 | ||
959 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); | |
960 | if (!cdev) | |
961 | return -ENOMEM; | |
962 | ||
05b41494 | 963 | mutex_init(&cdev->lock); |
eca39dd8 JK |
964 | skb_queue_head_init(&cdev->recvqueue); |
965 | init_waitqueue_head(&cdev->recvwait); | |
884f5c44 | 966 | INIT_LIST_HEAD(&cdev->nccis); |
eca39dd8 JK |
967 | file->private_data = cdev; |
968 | ||
969 | mutex_lock(&capidev_list_lock); | |
970 | list_add_tail(&cdev->list, &capidev_list); | |
971 | mutex_unlock(&capidev_list_lock); | |
972 | ||
973 | return nonseekable_open(inode, file); | |
1da177e4 LT |
974 | } |
975 | ||
eca39dd8 | 976 | static int capi_release(struct inode *inode, struct file *file) |
1da177e4 | 977 | { |
eca39dd8 | 978 | struct capidev *cdev = file->private_data; |
1da177e4 | 979 | |
eca39dd8 JK |
980 | mutex_lock(&capidev_list_lock); |
981 | list_del(&cdev->list); | |
982 | mutex_unlock(&capidev_list_lock); | |
983 | ||
05b41494 | 984 | if (cdev->ap.applid) |
eca39dd8 | 985 | capi20_release(&cdev->ap); |
eca39dd8 | 986 | skb_queue_purge(&cdev->recvqueue); |
eca39dd8 | 987 | capincci_free(cdev, 0xffffffff); |
eca39dd8 JK |
988 | |
989 | kfree(cdev); | |
1da177e4 LT |
990 | return 0; |
991 | } | |
992 | ||
2b8693c0 | 993 | static const struct file_operations capi_fops = |
1da177e4 LT |
994 | { |
995 | .owner = THIS_MODULE, | |
996 | .llseek = no_llseek, | |
997 | .read = capi_read, | |
998 | .write = capi_write, | |
999 | .poll = capi_poll, | |
1000 | .ioctl = capi_ioctl, | |
1001 | .open = capi_open, | |
1002 | .release = capi_release, | |
1003 | }; | |
1004 | ||
1005 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1006 | /* -------- tty_operations for capincci ----------------------------- */ | |
1007 | ||
46324511 JK |
1008 | static int |
1009 | capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) | |
1da177e4 | 1010 | { |
46324511 JK |
1011 | int idx = tty->index; |
1012 | struct capiminor *mp = capiminor_get(idx); | |
1013 | int ret = tty_init_termios(tty); | |
1014 | ||
1015 | if (ret == 0) { | |
1016 | tty_driver_kref_get(driver); | |
1017 | tty->count++; | |
1018 | tty->driver_data = mp; | |
1019 | driver->ttys[idx] = tty; | |
1020 | } else | |
1021 | capiminor_put(mp); | |
1022 | return ret; | |
1023 | } | |
1da177e4 | 1024 | |
46324511 JK |
1025 | static void capinc_tty_cleanup(struct tty_struct *tty) |
1026 | { | |
1027 | struct capiminor *mp = tty->driver_data; | |
1028 | tty->driver_data = NULL; | |
1029 | capiminor_put(mp); | |
1030 | } | |
1da177e4 | 1031 | |
46324511 JK |
1032 | static int capinc_tty_open(struct tty_struct * tty, struct file * file) |
1033 | { | |
1034 | struct capiminor *mp = tty->driver_data; | |
1035 | unsigned long flags; | |
1da177e4 | 1036 | |
053b47ff | 1037 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1038 | if (atomic_read(&mp->ttyopencount) == 0) |
1039 | mp->tty = tty; | |
1040 | atomic_inc(&mp->ttyopencount); | |
1041 | #ifdef _DEBUG_REFCOUNT | |
1042 | printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1043 | #endif | |
1044 | handle_minor_recv(mp); | |
053b47ff | 1045 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1046 | return 0; |
1047 | } | |
1048 | ||
1049 | static void capinc_tty_close(struct tty_struct * tty, struct file * file) | |
1050 | { | |
46324511 | 1051 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1052 | |
1da177e4 LT |
1053 | if (atomic_dec_and_test(&mp->ttyopencount)) { |
1054 | #ifdef _DEBUG_REFCOUNT | |
1055 | printk(KERN_DEBUG "capinc_tty_close lastclose\n"); | |
1056 | #endif | |
1da177e4 LT |
1057 | mp->tty = NULL; |
1058 | } | |
1059 | #ifdef _DEBUG_REFCOUNT | |
1060 | printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1061 | #endif | |
2f9e9b6d | 1062 | if (mp->nccip == NULL) |
1da177e4 | 1063 | capiminor_free(mp); |
0159d549 | 1064 | |
1da177e4 LT |
1065 | #ifdef _DEBUG_REFCOUNT |
1066 | printk(KERN_DEBUG "capinc_tty_close\n"); | |
1067 | #endif | |
1068 | } | |
1069 | ||
1070 | static int capinc_tty_write(struct tty_struct * tty, | |
1071 | const unsigned char *buf, int count) | |
1072 | { | |
1073 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1074 | struct sk_buff *skb; | |
053b47ff | 1075 | unsigned long flags; |
1da177e4 LT |
1076 | |
1077 | #ifdef _DEBUG_TTYFUNCS | |
1078 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1079 | #endif | |
1080 | ||
1081 | if (!mp || !mp->nccip) { | |
1082 | #ifdef _DEBUG_TTYFUNCS | |
1083 | printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n"); | |
1084 | #endif | |
1085 | return 0; | |
1086 | } | |
1087 | ||
053b47ff | 1088 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1089 | skb = mp->ttyskb; |
1090 | if (skb) { | |
1091 | mp->ttyskb = NULL; | |
1092 | skb_queue_tail(&mp->outqueue, skb); | |
1093 | mp->outbytes += skb->len; | |
1094 | } | |
1095 | ||
1096 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1097 | if (!skb) { | |
1098 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1099 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1100 | return -ENOMEM; |
1101 | } | |
1102 | ||
1103 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1104 | memcpy(skb_put(skb, count), buf, count); | |
1105 | ||
1106 | skb_queue_tail(&mp->outqueue, skb); | |
1107 | mp->outbytes += skb->len; | |
1108 | (void)handle_minor_send(mp); | |
1109 | (void)handle_minor_recv(mp); | |
053b47ff | 1110 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1111 | return count; |
1112 | } | |
1113 | ||
f2545a75 | 1114 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 LT |
1115 | { |
1116 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1117 | struct sk_buff *skb; | |
053b47ff | 1118 | unsigned long flags; |
f2545a75 | 1119 | int ret = 1; |
1da177e4 LT |
1120 | |
1121 | #ifdef _DEBUG_TTYFUNCS | |
1122 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1123 | #endif | |
1124 | ||
1125 | if (!mp || !mp->nccip) { | |
1126 | #ifdef _DEBUG_TTYFUNCS | |
1127 | printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n"); | |
1128 | #endif | |
f2545a75 | 1129 | return 0; |
1da177e4 LT |
1130 | } |
1131 | ||
053b47ff | 1132 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1133 | skb = mp->ttyskb; |
1134 | if (skb) { | |
1135 | if (skb_tailroom(skb) > 0) { | |
1136 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1137 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1138 | return 1; |
1da177e4 LT |
1139 | } |
1140 | mp->ttyskb = NULL; | |
1141 | skb_queue_tail(&mp->outqueue, skb); | |
1142 | mp->outbytes += skb->len; | |
1143 | (void)handle_minor_send(mp); | |
1144 | } | |
1145 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1146 | if (skb) { | |
1147 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1148 | *(skb_put(skb, 1)) = ch; | |
1149 | mp->ttyskb = skb; | |
1150 | } else { | |
1151 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1152 | ret = 0; |
1da177e4 | 1153 | } |
053b47ff | 1154 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1155 | return ret; |
1da177e4 LT |
1156 | } |
1157 | ||
1158 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1159 | { | |
1160 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1161 | struct sk_buff *skb; | |
053b47ff | 1162 | unsigned long flags; |
1da177e4 LT |
1163 | |
1164 | #ifdef _DEBUG_TTYFUNCS | |
1165 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1166 | #endif | |
1167 | ||
1168 | if (!mp || !mp->nccip) { | |
1169 | #ifdef _DEBUG_TTYFUNCS | |
1170 | printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n"); | |
1171 | #endif | |
1172 | return; | |
1173 | } | |
1174 | ||
053b47ff | 1175 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1176 | skb = mp->ttyskb; |
1177 | if (skb) { | |
1178 | mp->ttyskb = NULL; | |
1179 | skb_queue_tail(&mp->outqueue, skb); | |
1180 | mp->outbytes += skb->len; | |
1181 | (void)handle_minor_send(mp); | |
1182 | } | |
1183 | (void)handle_minor_recv(mp); | |
053b47ff | 1184 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1185 | } |
1186 | ||
1187 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1188 | { | |
1189 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1190 | int room; | |
1191 | if (!mp || !mp->nccip) { | |
1192 | #ifdef _DEBUG_TTYFUNCS | |
1193 | printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n"); | |
1194 | #endif | |
1195 | return 0; | |
1196 | } | |
1197 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); | |
1198 | room *= CAPI_MAX_BLKSIZE; | |
1199 | #ifdef _DEBUG_TTYFUNCS | |
1200 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1201 | #endif | |
1202 | return room; | |
1203 | } | |
1204 | ||
408b664a | 1205 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 LT |
1206 | { |
1207 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1208 | if (!mp || !mp->nccip) { | |
1209 | #ifdef _DEBUG_TTYFUNCS | |
1210 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n"); | |
1211 | #endif | |
1212 | return 0; | |
1213 | } | |
1214 | #ifdef _DEBUG_TTYFUNCS | |
1215 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1216 | mp->outbytes, mp->nack, | |
1217 | skb_queue_len(&mp->outqueue), | |
1218 | skb_queue_len(&mp->inqueue)); | |
1219 | #endif | |
1220 | return mp->outbytes; | |
1221 | } | |
1222 | ||
1223 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1224 | unsigned int cmd, unsigned long arg) | |
1225 | { | |
1226 | int error = 0; | |
1227 | switch (cmd) { | |
1228 | default: | |
53e86317 | 1229 | error = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
1230 | break; |
1231 | } | |
1232 | return error; | |
1233 | } | |
1234 | ||
606d099c | 1235 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1236 | { |
1237 | #ifdef _DEBUG_TTYFUNCS | |
1238 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1239 | #endif | |
1240 | } | |
1241 | ||
1242 | static void capinc_tty_throttle(struct tty_struct * tty) | |
1243 | { | |
1244 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1245 | #ifdef _DEBUG_TTYFUNCS | |
1246 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1247 | #endif | |
1248 | if (mp) | |
1249 | mp->ttyinstop = 1; | |
1250 | } | |
1251 | ||
1252 | static void capinc_tty_unthrottle(struct tty_struct * tty) | |
1253 | { | |
1254 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1255 | unsigned long flags; |
1da177e4 LT |
1256 | #ifdef _DEBUG_TTYFUNCS |
1257 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1258 | #endif | |
1259 | if (mp) { | |
053b47ff | 1260 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1261 | mp->ttyinstop = 0; |
1262 | handle_minor_recv(mp); | |
053b47ff | 1263 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1264 | } |
1265 | } | |
1266 | ||
1267 | static void capinc_tty_stop(struct tty_struct *tty) | |
1268 | { | |
1269 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1270 | #ifdef _DEBUG_TTYFUNCS | |
1271 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1272 | #endif | |
1273 | if (mp) { | |
1274 | mp->ttyoutstop = 1; | |
1275 | } | |
1276 | } | |
1277 | ||
1278 | static void capinc_tty_start(struct tty_struct *tty) | |
1279 | { | |
1280 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1281 | unsigned long flags; |
1da177e4 LT |
1282 | #ifdef _DEBUG_TTYFUNCS |
1283 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1284 | #endif | |
1285 | if (mp) { | |
053b47ff | 1286 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1287 | mp->ttyoutstop = 0; |
1288 | (void)handle_minor_send(mp); | |
053b47ff | 1289 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1290 | } |
1291 | } | |
1292 | ||
1293 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1294 | { | |
1295 | #ifdef _DEBUG_TTYFUNCS | |
1296 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1297 | #endif | |
1298 | } | |
1299 | ||
9e98966c | 1300 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1301 | { |
1302 | #ifdef _DEBUG_TTYFUNCS | |
1303 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1304 | #endif | |
9e98966c | 1305 | return 0; |
1da177e4 LT |
1306 | } |
1307 | ||
1308 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1309 | { | |
1310 | #ifdef _DEBUG_TTYFUNCS | |
1311 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1312 | #endif | |
1313 | } | |
1314 | ||
1315 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1316 | { | |
1317 | #ifdef _DEBUG_TTYFUNCS | |
1318 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1319 | #endif | |
1320 | } | |
1321 | ||
1322 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1323 | { | |
1324 | #ifdef _DEBUG_TTYFUNCS | |
1325 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1326 | #endif | |
1327 | } | |
1328 | ||
b68e31d0 | 1329 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1330 | .open = capinc_tty_open, |
1331 | .close = capinc_tty_close, | |
1332 | .write = capinc_tty_write, | |
1333 | .put_char = capinc_tty_put_char, | |
1334 | .flush_chars = capinc_tty_flush_chars, | |
1335 | .write_room = capinc_tty_write_room, | |
1336 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1337 | .ioctl = capinc_tty_ioctl, | |
1338 | .set_termios = capinc_tty_set_termios, | |
1339 | .throttle = capinc_tty_throttle, | |
1340 | .unthrottle = capinc_tty_unthrottle, | |
1341 | .stop = capinc_tty_stop, | |
1342 | .start = capinc_tty_start, | |
1343 | .hangup = capinc_tty_hangup, | |
1344 | .break_ctl = capinc_tty_break_ctl, | |
1345 | .flush_buffer = capinc_tty_flush_buffer, | |
1346 | .set_ldisc = capinc_tty_set_ldisc, | |
1347 | .send_xchar = capinc_tty_send_xchar, | |
46324511 JK |
1348 | .install = capinc_tty_install, |
1349 | .cleanup = capinc_tty_cleanup, | |
1da177e4 LT |
1350 | }; |
1351 | ||
e76b1544 | 1352 | static int __init capinc_tty_init(void) |
1da177e4 LT |
1353 | { |
1354 | struct tty_driver *drv; | |
e76b1544 JK |
1355 | int err; |
1356 | ||
1da177e4 LT |
1357 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
1358 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1359 | if (capi_ttyminors <= 0) | |
1360 | capi_ttyminors = CAPINC_NR_PORTS; | |
1361 | ||
81d17fe5 JK |
1362 | capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, |
1363 | GFP_KERNEL); | |
1364 | if (!capiminors) | |
1da177e4 LT |
1365 | return -ENOMEM; |
1366 | ||
81d17fe5 JK |
1367 | drv = alloc_tty_driver(capi_ttyminors); |
1368 | if (!drv) { | |
1369 | kfree(capiminors); | |
1370 | return -ENOMEM; | |
1371 | } | |
1da177e4 LT |
1372 | drv->owner = THIS_MODULE; |
1373 | drv->driver_name = "capi_nc"; | |
1da177e4 | 1374 | drv->name = "capi"; |
e95ac143 | 1375 | drv->major = 0; |
1da177e4 LT |
1376 | drv->minor_start = 0; |
1377 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1378 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1379 | drv->init_termios = tty_std_termios; | |
1380 | drv->init_termios.c_iflag = ICRNL; | |
1381 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1382 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1383 | drv->init_termios.c_lflag = 0; | |
40fb2d0d JK |
1384 | drv->flags = |
1385 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | | |
1386 | TTY_DRIVER_DYNAMIC_DEV; | |
1da177e4 | 1387 | tty_set_operations(drv, &capinc_ops); |
e76b1544 JK |
1388 | |
1389 | err = tty_register_driver(drv); | |
1390 | if (err) { | |
1da177e4 | 1391 | put_tty_driver(drv); |
81d17fe5 | 1392 | kfree(capiminors); |
1da177e4 | 1393 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
e76b1544 | 1394 | return err; |
1da177e4 LT |
1395 | } |
1396 | capinc_tty_driver = drv; | |
1397 | return 0; | |
1398 | } | |
1399 | ||
e76b1544 | 1400 | static void __exit capinc_tty_exit(void) |
1da177e4 | 1401 | { |
e76b1544 JK |
1402 | tty_unregister_driver(capinc_tty_driver); |
1403 | put_tty_driver(capinc_tty_driver); | |
81d17fe5 | 1404 | kfree(capiminors); |
1da177e4 LT |
1405 | } |
1406 | ||
501c87a9 JK |
1407 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
1408 | ||
1409 | static inline int capinc_tty_init(void) | |
1410 | { | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static inline void capinc_tty_exit(void) { } | |
1415 | ||
1416 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1da177e4 LT |
1417 | |
1418 | /* -------- /proc functions ----------------------------------------- */ | |
1419 | ||
1420 | /* | |
1421 | * /proc/capi/capi20: | |
1422 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1423 | */ | |
9a58a80a | 1424 | static int capi20_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1425 | { |
1426 | struct capidev *cdev; | |
1427 | struct list_head *l; | |
1da177e4 | 1428 | |
b8f433dc | 1429 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1430 | list_for_each(l, &capidev_list) { |
1431 | cdev = list_entry(l, struct capidev, list); | |
9a58a80a | 1432 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
1da177e4 LT |
1433 | cdev->ap.applid, |
1434 | cdev->ap.nrecvctlpkt, | |
1435 | cdev->ap.nrecvdatapkt, | |
1436 | cdev->ap.nsentctlpkt, | |
1437 | cdev->ap.nsentdatapkt); | |
1da177e4 | 1438 | } |
b8f433dc | 1439 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1440 | return 0; |
1da177e4 LT |
1441 | } |
1442 | ||
9a58a80a AD |
1443 | static int capi20_proc_open(struct inode *inode, struct file *file) |
1444 | { | |
1445 | return single_open(file, capi20_proc_show, NULL); | |
1446 | } | |
1447 | ||
1448 | static const struct file_operations capi20_proc_fops = { | |
1449 | .owner = THIS_MODULE, | |
1450 | .open = capi20_proc_open, | |
1451 | .read = seq_read, | |
1452 | .llseek = seq_lseek, | |
1453 | .release = single_release, | |
1454 | }; | |
1455 | ||
1da177e4 LT |
1456 | /* |
1457 | * /proc/capi/capi20ncci: | |
1458 | * applid ncci | |
1459 | */ | |
9a58a80a | 1460 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1461 | { |
884f5c44 JK |
1462 | struct capidev *cdev; |
1463 | struct capincci *np; | |
1da177e4 | 1464 | |
b8f433dc | 1465 | mutex_lock(&capidev_list_lock); |
884f5c44 | 1466 | list_for_each_entry(cdev, &capidev_list, list) { |
05b41494 | 1467 | mutex_lock(&cdev->lock); |
884f5c44 JK |
1468 | list_for_each_entry(np, &cdev->nccis, list) |
1469 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); | |
05b41494 | 1470 | mutex_unlock(&cdev->lock); |
1da177e4 | 1471 | } |
b8f433dc | 1472 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1473 | return 0; |
1da177e4 LT |
1474 | } |
1475 | ||
9a58a80a AD |
1476 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
1477 | { | |
1478 | return single_open(file, capi20ncci_proc_show, NULL); | |
1479 | } | |
1480 | ||
1481 | static const struct file_operations capi20ncci_proc_fops = { | |
1482 | .owner = THIS_MODULE, | |
1483 | .open = capi20ncci_proc_open, | |
1484 | .read = seq_read, | |
1485 | .llseek = seq_lseek, | |
1486 | .release = single_release, | |
1da177e4 LT |
1487 | }; |
1488 | ||
1489 | static void __init proc_init(void) | |
1490 | { | |
9a58a80a AD |
1491 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
1492 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); | |
1da177e4 LT |
1493 | } |
1494 | ||
1495 | static void __exit proc_exit(void) | |
1496 | { | |
9a58a80a AD |
1497 | remove_proc_entry("capi/capi20", NULL); |
1498 | remove_proc_entry("capi/capi20ncci", NULL); | |
1da177e4 LT |
1499 | } |
1500 | ||
1501 | /* -------- init function and module interface ---------------------- */ | |
1502 | ||
1503 | ||
1da177e4 LT |
1504 | static int __init capi_init(void) |
1505 | { | |
88549d6b | 1506 | const char *compileinfo; |
6d9eac34 | 1507 | int major_ret; |
1da177e4 | 1508 | |
6d9eac34 AM |
1509 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1510 | if (major_ret < 0) { | |
1da177e4 | 1511 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1512 | return major_ret; |
1da177e4 | 1513 | } |
56b22935 | 1514 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1515 | if (IS_ERR(capi_class)) { |
1516 | unregister_chrdev(capi_major, "capi20"); | |
1517 | return PTR_ERR(capi_class); | |
1518 | } | |
1519 | ||
a9b12619 | 1520 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
1da177e4 | 1521 | |
1da177e4 | 1522 | if (capinc_tty_init() < 0) { |
d78b0368 | 1523 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1524 | class_destroy(capi_class); |
1da177e4 LT |
1525 | unregister_chrdev(capi_major, "capi20"); |
1526 | return -ENOMEM; | |
1527 | } | |
1da177e4 LT |
1528 | |
1529 | proc_init(); | |
1530 | ||
1da177e4 LT |
1531 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
1532 | compileinfo = " (middleware+capifs)"; | |
501c87a9 | 1533 | #elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE) |
1da177e4 | 1534 | compileinfo = " (no capifs)"; |
1da177e4 LT |
1535 | #else |
1536 | compileinfo = " (no middleware)"; | |
1537 | #endif | |
88549d6b JK |
1538 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
1539 | capi_major, compileinfo); | |
1da177e4 LT |
1540 | |
1541 | return 0; | |
1542 | } | |
1543 | ||
1544 | static void __exit capi_exit(void) | |
1545 | { | |
1546 | proc_exit(); | |
1547 | ||
d78b0368 | 1548 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1549 | class_destroy(capi_class); |
1da177e4 | 1550 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 | 1551 | |
1da177e4 | 1552 | capinc_tty_exit(); |
1da177e4 LT |
1553 | } |
1554 | ||
1555 | module_init(capi_init); | |
1556 | module_exit(capi_exit); |