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Commit | Line | Data |
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1da177e4 LT |
1 | /* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $ |
2 | * | |
3 | * CAPI 2.0 Interface for Linux | |
4 | * | |
5 | * Copyright 1996 by Carsten Paeth <calle@calle.de> | |
6 | * | |
7 | * This software may be used and distributed according to the terms | |
8 | * of the GNU General Public License, incorporated herein by reference. | |
9 | * | |
10 | */ | |
11 | ||
1da177e4 LT |
12 | #include <linux/module.h> |
13 | #include <linux/errno.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/major.h> | |
16 | #include <linux/sched.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/fcntl.h> | |
19 | #include <linux/fs.h> | |
20 | #include <linux/signal.h> | |
9ea6e5d8 | 21 | #include <linux/mutex.h> |
1da177e4 | 22 | #include <linux/mm.h> |
a237f3bb | 23 | #include <linux/smp_lock.h> |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/wait.h> | |
1da177e4 | 26 | #include <linux/tty.h> |
1da177e4 LT |
27 | #include <linux/netdevice.h> |
28 | #include <linux/ppp_defs.h> | |
29 | #include <linux/if_ppp.h> | |
1da177e4 LT |
30 | #include <linux/skbuff.h> |
31 | #include <linux/proc_fs.h> | |
9a58a80a | 32 | #include <linux/seq_file.h> |
1da177e4 LT |
33 | #include <linux/poll.h> |
34 | #include <linux/capi.h> | |
35 | #include <linux/kernelcapi.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/device.h> | |
38 | #include <linux/moduleparam.h> | |
1da177e4 LT |
39 | #include <linux/isdn/capiutil.h> |
40 | #include <linux/isdn/capicmd.h> | |
90926f0e | 41 | |
1da177e4 | 42 | #include "capifs.h" |
1da177e4 | 43 | |
1da177e4 LT |
44 | MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); |
45 | MODULE_AUTHOR("Carsten Paeth"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
48 | #undef _DEBUG_REFCOUNT /* alloc/free and open/close debug */ | |
49 | #undef _DEBUG_TTYFUNCS /* call to tty_driver */ | |
50 | #undef _DEBUG_DATAFLOW /* data flow */ | |
51 | ||
52 | /* -------- driver information -------------------------------------- */ | |
53 | ||
56b22935 | 54 | static struct class *capi_class; |
408b664a | 55 | static int capi_major = 68; /* allocated */ |
501c87a9 JK |
56 | |
57 | module_param_named(major, capi_major, uint, 0); | |
58 | ||
1da177e4 | 59 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
501c87a9 | 60 | #define CAPINC_NR_PORTS 32 |
1da177e4 | 61 | #define CAPINC_MAX_PORTS 256 |
501c87a9 | 62 | |
408b664a | 63 | static int capi_ttyminors = CAPINC_NR_PORTS; |
1da177e4 | 64 | |
1da177e4 LT |
65 | module_param_named(ttyminors, capi_ttyminors, uint, 0); |
66 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
67 | ||
68 | /* -------- defines ------------------------------------------------- */ | |
69 | ||
70 | #define CAPINC_MAX_RECVQUEUE 10 | |
71 | #define CAPINC_MAX_SENDQUEUE 10 | |
72 | #define CAPI_MAX_BLKSIZE 2048 | |
73 | ||
74 | /* -------- data structures ----------------------------------------- */ | |
75 | ||
76 | struct capidev; | |
77 | struct capincci; | |
1da177e4 LT |
78 | struct capiminor; |
79 | ||
6aa65472 MB |
80 | struct datahandle_queue { |
81 | struct list_head list; | |
82 | u16 datahandle; | |
83 | }; | |
84 | ||
1da177e4 | 85 | struct capiminor { |
0159d549 JK |
86 | struct kref kref; |
87 | ||
1da177e4 | 88 | unsigned int minor; |
90926f0e | 89 | struct dentry *capifs_dentry; |
1da177e4 LT |
90 | |
91 | struct capi20_appl *ap; | |
92 | u32 ncci; | |
93 | u16 datahandle; | |
94 | u16 msgid; | |
95 | ||
fb4b4881 | 96 | struct tty_port port; |
1da177e4 LT |
97 | int ttyinstop; |
98 | int ttyoutstop; | |
99 | struct sk_buff *ttyskb; | |
100 | atomic_t ttyopencount; | |
101 | ||
102 | struct sk_buff_head inqueue; | |
103 | int inbytes; | |
104 | struct sk_buff_head outqueue; | |
105 | int outbytes; | |
106 | ||
107 | /* transmit path */ | |
6aa65472 | 108 | struct list_head ackqueue; |
1da177e4 | 109 | int nack; |
6aa65472 | 110 | spinlock_t ackqlock; |
1da177e4 | 111 | }; |
1da177e4 | 112 | |
053b47ff MB |
113 | /* FIXME: The following lock is a sledgehammer-workaround to a |
114 | * locking issue with the capiminor (and maybe other) data structure(s). | |
115 | * Access to this data is done in a racy way and crashes the machine with | |
116 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
117 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
118 | * The correct (and scalable) fix for the issue seems to require | |
119 | * an API change to the drivers... . */ | |
120 | static DEFINE_SPINLOCK(workaround_lock); | |
121 | ||
1da177e4 | 122 | struct capincci { |
884f5c44 | 123 | struct list_head list; |
1da177e4 LT |
124 | u32 ncci; |
125 | struct capidev *cdev; | |
126 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
127 | struct capiminor *minorp; | |
128 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
129 | }; | |
130 | ||
131 | struct capidev { | |
132 | struct list_head list; | |
133 | struct capi20_appl ap; | |
134 | u16 errcode; | |
135 | unsigned userflags; | |
136 | ||
137 | struct sk_buff_head recvqueue; | |
138 | wait_queue_head_t recvwait; | |
139 | ||
884f5c44 | 140 | struct list_head nccis; |
1da177e4 | 141 | |
05b41494 | 142 | struct mutex lock; |
1da177e4 LT |
143 | }; |
144 | ||
145 | /* -------- global variables ---------------------------------------- */ | |
146 | ||
b8f433dc | 147 | static DEFINE_MUTEX(capidev_list_lock); |
1da177e4 LT |
148 | static LIST_HEAD(capidev_list); |
149 | ||
150 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
501c87a9 | 151 | |
81d17fe5 JK |
152 | static DEFINE_RWLOCK(capiminors_lock); |
153 | static struct capiminor **capiminors; | |
1da177e4 | 154 | |
40fb2d0d JK |
155 | static struct tty_driver *capinc_tty_driver; |
156 | ||
1da177e4 LT |
157 | /* -------- datahandles --------------------------------------------- */ |
158 | ||
501c87a9 | 159 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
1da177e4 | 160 | { |
6aa65472 MB |
161 | struct datahandle_queue *n; |
162 | unsigned long flags; | |
1da177e4 LT |
163 | |
164 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
165 | if (unlikely(!n)) { |
166 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
167 | return -1; | |
1da177e4 | 168 | } |
1da177e4 | 169 | n->datahandle = datahandle; |
6aa65472 MB |
170 | INIT_LIST_HEAD(&n->list); |
171 | spin_lock_irqsave(&mp->ackqlock, flags); | |
172 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 173 | mp->nack++; |
6aa65472 | 174 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
175 | return 0; |
176 | } | |
177 | ||
178 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
179 | { | |
6aa65472 MB |
180 | struct datahandle_queue *p, *tmp; |
181 | unsigned long flags; | |
1da177e4 | 182 | |
6aa65472 MB |
183 | spin_lock_irqsave(&mp->ackqlock, flags); |
184 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
185 | if (p->datahandle == datahandle) { | |
186 | list_del(&p->list); | |
1da177e4 LT |
187 | kfree(p); |
188 | mp->nack--; | |
6aa65472 | 189 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
190 | return 0; |
191 | } | |
192 | } | |
6aa65472 | 193 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
194 | return -1; |
195 | } | |
196 | ||
197 | static void capiminor_del_all_ack(struct capiminor *mp) | |
198 | { | |
6aa65472 MB |
199 | struct datahandle_queue *p, *tmp; |
200 | unsigned long flags; | |
1da177e4 | 201 | |
6aa65472 MB |
202 | spin_lock_irqsave(&mp->ackqlock, flags); |
203 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
204 | list_del(&p->list); | |
1da177e4 LT |
205 | kfree(p); |
206 | mp->nack--; | |
207 | } | |
6aa65472 | 208 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
209 | } |
210 | ||
211 | ||
212 | /* -------- struct capiminor ---------------------------------------- */ | |
213 | ||
fb4b4881 JK |
214 | static const struct tty_port_operations capiminor_port_ops; /* we have none */ |
215 | ||
1da177e4 LT |
216 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) |
217 | { | |
81d17fe5 | 218 | struct capiminor *mp; |
40fb2d0d | 219 | struct device *dev; |
81d17fe5 | 220 | unsigned int minor; |
1da177e4 LT |
221 | unsigned long flags; |
222 | ||
54f0fad3 | 223 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
1da177e4 LT |
224 | if (!mp) { |
225 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
226 | return NULL; | |
227 | } | |
228 | ||
0159d549 JK |
229 | kref_init(&mp->kref); |
230 | ||
1da177e4 LT |
231 | mp->ap = ap; |
232 | mp->ncci = ncci; | |
233 | mp->msgid = 0; | |
234 | atomic_set(&mp->ttyopencount,0); | |
6aa65472 MB |
235 | INIT_LIST_HEAD(&mp->ackqueue); |
236 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
237 | |
238 | skb_queue_head_init(&mp->inqueue); | |
239 | skb_queue_head_init(&mp->outqueue); | |
240 | ||
fb4b4881 JK |
241 | tty_port_init(&mp->port); |
242 | mp->port.ops = &capiminor_port_ops; | |
243 | ||
81d17fe5 JK |
244 | /* Allocate the least unused minor number. */ |
245 | write_lock_irqsave(&capiminors_lock, flags); | |
246 | for (minor = 0; minor < capi_ttyminors; minor++) | |
247 | if (!capiminors[minor]) { | |
248 | capiminors[minor] = mp; | |
249 | break; | |
1da177e4 | 250 | } |
81d17fe5 | 251 | write_unlock_irqrestore(&capiminors_lock, flags); |
1da177e4 | 252 | |
81d17fe5 | 253 | if (minor == capi_ttyminors) { |
1da177e4 | 254 | printk(KERN_NOTICE "capi: out of minors\n"); |
40fb2d0d | 255 | goto err_out1; |
1da177e4 LT |
256 | } |
257 | ||
81d17fe5 JK |
258 | mp->minor = minor; |
259 | ||
40fb2d0d JK |
260 | dev = tty_register_device(capinc_tty_driver, minor, NULL); |
261 | if (IS_ERR(dev)) | |
262 | goto err_out2; | |
263 | ||
1da177e4 | 264 | return mp; |
40fb2d0d JK |
265 | |
266 | err_out2: | |
267 | write_lock_irqsave(&capiminors_lock, flags); | |
268 | capiminors[minor] = NULL; | |
269 | write_unlock_irqrestore(&capiminors_lock, flags); | |
270 | ||
271 | err_out1: | |
272 | kfree(mp); | |
273 | return NULL; | |
1da177e4 LT |
274 | } |
275 | ||
0159d549 | 276 | static void capiminor_destroy(struct kref *kref) |
1da177e4 | 277 | { |
0159d549 | 278 | struct capiminor *mp = container_of(kref, struct capiminor, kref); |
1da177e4 | 279 | |
d46604e1 | 280 | kfree_skb(mp->ttyskb); |
1da177e4 LT |
281 | skb_queue_purge(&mp->inqueue); |
282 | skb_queue_purge(&mp->outqueue); | |
283 | capiminor_del_all_ack(mp); | |
284 | kfree(mp); | |
285 | } | |
286 | ||
40fb2d0d | 287 | static struct capiminor *capiminor_get(unsigned int minor) |
1da177e4 | 288 | { |
81d17fe5 | 289 | struct capiminor *mp; |
1da177e4 | 290 | |
81d17fe5 JK |
291 | read_lock(&capiminors_lock); |
292 | mp = capiminors[minor]; | |
0159d549 JK |
293 | if (mp) |
294 | kref_get(&mp->kref); | |
81d17fe5 JK |
295 | read_unlock(&capiminors_lock); |
296 | ||
297 | return mp; | |
1da177e4 | 298 | } |
1da177e4 | 299 | |
0159d549 JK |
300 | static inline void capiminor_put(struct capiminor *mp) |
301 | { | |
302 | kref_put(&mp->kref, capiminor_destroy); | |
303 | } | |
304 | ||
305 | static void capiminor_free(struct capiminor *mp) | |
306 | { | |
307 | unsigned long flags; | |
308 | ||
309 | tty_unregister_device(capinc_tty_driver, mp->minor); | |
310 | ||
311 | write_lock_irqsave(&capiminors_lock, flags); | |
312 | capiminors[mp->minor] = NULL; | |
313 | write_unlock_irqrestore(&capiminors_lock, flags); | |
314 | ||
315 | capiminor_put(mp); | |
316 | } | |
317 | ||
1da177e4 LT |
318 | /* -------- struct capincci ----------------------------------------- */ |
319 | ||
501c87a9 | 320 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
1da177e4 | 321 | { |
501c87a9 | 322 | struct capiminor *mp; |
e95ac143 | 323 | dev_t device; |
1da177e4 | 324 | |
501c87a9 JK |
325 | if (!(cdev->userflags & CAPIFLAG_HIGHJACKING)) |
326 | return; | |
327 | ||
328 | mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci); | |
1da177e4 | 329 | if (mp) { |
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; | |
fb4b4881 | 338 | struct tty_struct *tty; |
501c87a9 JK |
339 | |
340 | if (mp) { | |
341 | capifs_free_ncci(mp->capifs_dentry); | |
fb4b4881 JK |
342 | |
343 | tty = tty_port_tty_get(&mp->port); | |
344 | if (tty) { | |
30bced91 | 345 | tty_vhangup(tty); |
fb4b4881 | 346 | tty_kref_put(tty); |
501c87a9 | 347 | } |
fb4b4881 JK |
348 | |
349 | capiminor_free(mp); | |
501c87a9 JK |
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 | { | |
fb4b4881 | 436 | struct tty_struct *tty; |
1da177e4 LT |
437 | struct sk_buff *nskb; |
438 | int datalen; | |
439 | u16 errcode, datahandle; | |
440 | struct tty_ldisc *ld; | |
fb4b4881 JK |
441 | int ret = -1; |
442 | ||
1da177e4 | 443 | datalen = skb->len - CAPIMSG_LEN(skb->data); |
fb4b4881 JK |
444 | |
445 | tty = tty_port_tty_get(&mp->port); | |
446 | if (!tty) { | |
1da177e4 LT |
447 | #ifdef _DEBUG_DATAFLOW |
448 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
449 | #endif | |
450 | return -1; | |
451 | } | |
452 | ||
fb4b4881 JK |
453 | ld = tty_ldisc_ref(tty); |
454 | if (!ld) | |
455 | goto out1; | |
456 | ||
a352def2 | 457 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
458 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
459 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
460 | #endif | |
fb4b4881 | 461 | goto out2; |
1da177e4 LT |
462 | } |
463 | if (mp->ttyinstop) { | |
464 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
465 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
466 | #endif | |
fb4b4881 | 467 | goto out2; |
1da177e4 | 468 | } |
fb4b4881 | 469 | if (tty->receive_room < datalen) { |
1da177e4 LT |
470 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
471 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
472 | #endif | |
fb4b4881 | 473 | goto out2; |
1da177e4 | 474 | } |
2f9e9b6d | 475 | if ((nskb = gen_data_b3_resp_for(mp, skb)) == NULL) { |
1da177e4 | 476 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
fb4b4881 | 477 | goto out2; |
1da177e4 LT |
478 | } |
479 | datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4); | |
480 | errcode = capi20_put_message(mp->ap, nskb); | |
481 | if (errcode != CAPI_NOERROR) { | |
482 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", | |
483 | errcode); | |
484 | kfree_skb(nskb); | |
fb4b4881 | 485 | goto out2; |
1da177e4 LT |
486 | } |
487 | (void)skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
488 | #ifdef _DEBUG_DATAFLOW | |
489 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
490 | datahandle, skb->len); | |
491 | #endif | |
fb4b4881 | 492 | ld->ops->receive_buf(tty, skb->data, NULL, skb->len); |
1da177e4 | 493 | kfree_skb(skb); |
fb4b4881 JK |
494 | ret = 0; |
495 | out2: | |
1da177e4 | 496 | tty_ldisc_deref(ld); |
fb4b4881 JK |
497 | out1: |
498 | tty_kref_put(tty); | |
499 | return ret; | |
1da177e4 LT |
500 | } |
501 | ||
502 | static void handle_minor_recv(struct capiminor *mp) | |
503 | { | |
504 | struct sk_buff *skb; | |
2f9e9b6d | 505 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) { |
1da177e4 LT |
506 | unsigned int len = skb->len; |
507 | mp->inbytes -= len; | |
508 | if (handle_recv_skb(mp, skb) < 0) { | |
509 | skb_queue_head(&mp->inqueue, skb); | |
510 | mp->inbytes += len; | |
511 | return; | |
512 | } | |
513 | } | |
514 | } | |
515 | ||
516 | static int handle_minor_send(struct capiminor *mp) | |
517 | { | |
fb4b4881 | 518 | struct tty_struct *tty; |
1da177e4 LT |
519 | struct sk_buff *skb; |
520 | u16 len; | |
521 | int count = 0; | |
522 | u16 errcode; | |
523 | u16 datahandle; | |
524 | ||
fb4b4881 JK |
525 | tty = tty_port_tty_get(&mp->port); |
526 | if (!tty) | |
527 | return 0; | |
528 | ||
529 | if (mp->ttyoutstop) { | |
1da177e4 LT |
530 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
531 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
532 | #endif | |
fb4b4881 | 533 | tty_kref_put(tty); |
1da177e4 LT |
534 | return 0; |
535 | } | |
536 | ||
2f9e9b6d | 537 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
1da177e4 LT |
538 | datahandle = mp->datahandle; |
539 | len = (u16)skb->len; | |
540 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
541 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
542 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
543 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
544 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
545 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
546 | capimsg_setu16(skb->data, 6, mp->msgid++); | |
547 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ | |
5e6c20a9 | 548 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
549 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
550 | capimsg_setu16(skb->data, 18, datahandle); | |
551 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
552 | ||
501c87a9 | 553 | if (capiminor_add_ack(mp, datahandle) < 0) { |
1da177e4 LT |
554 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
555 | skb_queue_head(&mp->outqueue, skb); | |
fb4b4881 | 556 | tty_kref_put(tty); |
1da177e4 LT |
557 | return count; |
558 | } | |
559 | errcode = capi20_put_message(mp->ap, skb); | |
560 | if (errcode == CAPI_NOERROR) { | |
561 | mp->datahandle++; | |
562 | count++; | |
563 | mp->outbytes -= len; | |
564 | #ifdef _DEBUG_DATAFLOW | |
565 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
566 | datahandle, len); | |
567 | #endif | |
568 | continue; | |
569 | } | |
570 | capiminor_del_ack(mp, datahandle); | |
571 | ||
572 | if (errcode == CAPI_SENDQUEUEFULL) { | |
573 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
574 | skb_queue_head(&mp->outqueue, skb); | |
575 | break; | |
576 | } | |
577 | ||
578 | /* ups, drop packet */ | |
579 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
580 | mp->outbytes -= len; | |
581 | kfree_skb(skb); | |
582 | } | |
fb4b4881 | 583 | tty_kref_put(tty); |
1da177e4 LT |
584 | return count; |
585 | } | |
586 | ||
587 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
588 | /* -------- function called by lower level -------------------------- */ | |
589 | ||
590 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
591 | { | |
592 | struct capidev *cdev = ap->private; | |
593 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
fb4b4881 | 594 | struct tty_struct *tty; |
1da177e4 LT |
595 | struct capiminor *mp; |
596 | u16 datahandle; | |
597 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
598 | struct capincci *np; | |
053b47ff | 599 | unsigned long flags; |
1da177e4 | 600 | |
05b41494 JK |
601 | mutex_lock(&cdev->lock); |
602 | ||
1da177e4 LT |
603 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
604 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
05b41494 | 605 | if ((info & 0xff00) == 0) |
1da177e4 | 606 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
1da177e4 | 607 | } |
05b41494 | 608 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
1da177e4 | 609 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 610 | |
053b47ff | 611 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
612 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
613 | skb_queue_tail(&cdev->recvqueue, skb); | |
614 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 615 | goto unlock_out; |
1da177e4 | 616 | } |
05b41494 JK |
617 | |
618 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); | |
1da177e4 LT |
619 | if (!np) { |
620 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
621 | skb_queue_tail(&cdev->recvqueue, skb); | |
622 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 623 | goto unlock_out; |
1da177e4 | 624 | } |
501c87a9 | 625 | |
1da177e4 LT |
626 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
627 | skb_queue_tail(&cdev->recvqueue, skb); | |
628 | wake_up_interruptible(&cdev->recvwait); | |
501c87a9 | 629 | |
1da177e4 | 630 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
501c87a9 | 631 | |
1da177e4 LT |
632 | mp = np->minorp; |
633 | if (!mp) { | |
634 | skb_queue_tail(&cdev->recvqueue, skb); | |
635 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 636 | goto unlock_out; |
1da177e4 | 637 | } |
1da177e4 | 638 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
1da177e4 LT |
639 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); |
640 | #ifdef _DEBUG_DATAFLOW | |
641 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
642 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
643 | #endif | |
644 | skb_queue_tail(&mp->inqueue, skb); | |
645 | mp->inbytes += skb->len; | |
646 | handle_minor_recv(mp); | |
647 | ||
648 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
649 | ||
650 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
651 | #ifdef _DEBUG_DATAFLOW | |
652 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
653 | datahandle, | |
654 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
655 | #endif | |
656 | kfree_skb(skb); | |
657 | (void)capiminor_del_ack(mp, datahandle); | |
fb4b4881 JK |
658 | tty = tty_port_tty_get(&mp->port); |
659 | if (tty) { | |
660 | tty_wakeup(tty); | |
661 | tty_kref_put(tty); | |
662 | } | |
1da177e4 LT |
663 | (void)handle_minor_send(mp); |
664 | ||
665 | } else { | |
666 | /* ups, let capi application handle it :-) */ | |
667 | skb_queue_tail(&cdev->recvqueue, skb); | |
668 | wake_up_interruptible(&cdev->recvwait); | |
669 | } | |
670 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
501c87a9 | 671 | |
05b41494 | 672 | unlock_out: |
053b47ff | 673 | spin_unlock_irqrestore(&workaround_lock, flags); |
05b41494 | 674 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
675 | } |
676 | ||
677 | /* -------- file_operations for capidev ----------------------------- */ | |
678 | ||
679 | static ssize_t | |
680 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
681 | { | |
682 | struct capidev *cdev = (struct capidev *)file->private_data; | |
683 | struct sk_buff *skb; | |
684 | size_t copied; | |
28a1dbb6 | 685 | int err; |
1da177e4 LT |
686 | |
687 | if (!cdev->ap.applid) | |
688 | return -ENODEV; | |
689 | ||
28a1dbb6 JK |
690 | skb = skb_dequeue(&cdev->recvqueue); |
691 | if (!skb) { | |
1da177e4 LT |
692 | if (file->f_flags & O_NONBLOCK) |
693 | return -EAGAIN; | |
28a1dbb6 JK |
694 | err = wait_event_interruptible(cdev->recvwait, |
695 | (skb = skb_dequeue(&cdev->recvqueue))); | |
696 | if (err) | |
697 | return err; | |
1da177e4 LT |
698 | } |
699 | if (skb->len > count) { | |
700 | skb_queue_head(&cdev->recvqueue, skb); | |
701 | return -EMSGSIZE; | |
702 | } | |
703 | if (copy_to_user(buf, skb->data, skb->len)) { | |
704 | skb_queue_head(&cdev->recvqueue, skb); | |
705 | return -EFAULT; | |
706 | } | |
707 | copied = skb->len; | |
708 | ||
709 | kfree_skb(skb); | |
710 | ||
711 | return copied; | |
712 | } | |
713 | ||
714 | static ssize_t | |
715 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
716 | { | |
717 | struct capidev *cdev = (struct capidev *)file->private_data; | |
718 | struct sk_buff *skb; | |
719 | u16 mlen; | |
720 | ||
721 | if (!cdev->ap.applid) | |
722 | return -ENODEV; | |
723 | ||
724 | skb = alloc_skb(count, GFP_USER); | |
725 | if (!skb) | |
726 | return -ENOMEM; | |
727 | ||
728 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
729 | kfree_skb(skb); | |
730 | return -EFAULT; | |
731 | } | |
732 | mlen = CAPIMSG_LEN(skb->data); | |
733 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
734 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
735 | kfree_skb(skb); | |
736 | return -EINVAL; | |
737 | } | |
738 | } else { | |
739 | if (mlen != count) { | |
740 | kfree_skb(skb); | |
741 | return -EINVAL; | |
742 | } | |
743 | } | |
744 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
745 | ||
746 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
05b41494 | 747 | mutex_lock(&cdev->lock); |
1da177e4 | 748 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 749 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
750 | } |
751 | ||
752 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
753 | ||
754 | if (cdev->errcode) { | |
755 | kfree_skb(skb); | |
756 | return -EIO; | |
757 | } | |
758 | return count; | |
759 | } | |
760 | ||
761 | static unsigned int | |
762 | capi_poll(struct file *file, poll_table * wait) | |
763 | { | |
764 | struct capidev *cdev = (struct capidev *)file->private_data; | |
765 | unsigned int mask = 0; | |
766 | ||
767 | if (!cdev->ap.applid) | |
768 | return POLLERR; | |
769 | ||
770 | poll_wait(file, &(cdev->recvwait), wait); | |
771 | mask = POLLOUT | POLLWRNORM; | |
772 | if (!skb_queue_empty(&cdev->recvqueue)) | |
773 | mask |= POLLIN | POLLRDNORM; | |
774 | return mask; | |
775 | } | |
776 | ||
777 | static int | |
778 | capi_ioctl(struct inode *inode, struct file *file, | |
779 | unsigned int cmd, unsigned long arg) | |
780 | { | |
781 | struct capidev *cdev = file->private_data; | |
1da177e4 LT |
782 | capi_ioctl_struct data; |
783 | int retval = -EINVAL; | |
784 | void __user *argp = (void __user *)arg; | |
785 | ||
786 | switch (cmd) { | |
787 | case CAPI_REGISTER: | |
05b41494 | 788 | mutex_lock(&cdev->lock); |
1da177e4 | 789 | |
05b41494 JK |
790 | if (cdev->ap.applid) { |
791 | retval = -EEXIST; | |
792 | goto register_out; | |
793 | } | |
794 | if (copy_from_user(&cdev->ap.rparam, argp, | |
795 | sizeof(struct capi_register_params))) { | |
796 | retval = -EFAULT; | |
797 | goto register_out; | |
798 | } | |
799 | cdev->ap.private = cdev; | |
800 | cdev->ap.recv_message = capi_recv_message; | |
801 | cdev->errcode = capi20_register(&cdev->ap); | |
802 | retval = (int)cdev->ap.applid; | |
803 | if (cdev->errcode) { | |
804 | cdev->ap.applid = 0; | |
805 | retval = -EIO; | |
1da177e4 | 806 | } |
05b41494 JK |
807 | |
808 | register_out: | |
809 | mutex_unlock(&cdev->lock); | |
810 | return retval; | |
1da177e4 LT |
811 | |
812 | case CAPI_GET_VERSION: | |
813 | { | |
814 | if (copy_from_user(&data.contr, argp, | |
815 | sizeof(data.contr))) | |
816 | return -EFAULT; | |
817 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
818 | if (cdev->errcode) | |
819 | return -EIO; | |
820 | if (copy_to_user(argp, &data.version, | |
821 | sizeof(data.version))) | |
822 | return -EFAULT; | |
823 | } | |
824 | return 0; | |
825 | ||
826 | case CAPI_GET_SERIAL: | |
827 | { | |
828 | if (copy_from_user(&data.contr, argp, | |
829 | sizeof(data.contr))) | |
830 | return -EFAULT; | |
831 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
832 | if (cdev->errcode) | |
833 | return -EIO; | |
834 | if (copy_to_user(argp, data.serial, | |
835 | sizeof(data.serial))) | |
836 | return -EFAULT; | |
837 | } | |
838 | return 0; | |
839 | case CAPI_GET_PROFILE: | |
840 | { | |
841 | if (copy_from_user(&data.contr, argp, | |
842 | sizeof(data.contr))) | |
843 | return -EFAULT; | |
844 | ||
845 | if (data.contr == 0) { | |
846 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
847 | if (cdev->errcode) | |
848 | return -EIO; | |
849 | ||
850 | retval = copy_to_user(argp, | |
851 | &data.profile.ncontroller, | |
852 | sizeof(data.profile.ncontroller)); | |
853 | ||
854 | } else { | |
855 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
856 | if (cdev->errcode) | |
857 | return -EIO; | |
858 | ||
859 | retval = copy_to_user(argp, &data.profile, | |
860 | sizeof(data.profile)); | |
861 | } | |
862 | if (retval) | |
863 | return -EFAULT; | |
864 | } | |
865 | return 0; | |
866 | ||
867 | case CAPI_GET_MANUFACTURER: | |
868 | { | |
869 | if (copy_from_user(&data.contr, argp, | |
870 | sizeof(data.contr))) | |
871 | return -EFAULT; | |
872 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
873 | if (cdev->errcode) | |
874 | return -EIO; | |
875 | ||
876 | if (copy_to_user(argp, data.manufacturer, | |
877 | sizeof(data.manufacturer))) | |
878 | return -EFAULT; | |
879 | ||
880 | } | |
881 | return 0; | |
882 | case CAPI_GET_ERRCODE: | |
883 | data.errcode = cdev->errcode; | |
884 | cdev->errcode = CAPI_NOERROR; | |
885 | if (arg) { | |
886 | if (copy_to_user(argp, &data.errcode, | |
887 | sizeof(data.errcode))) | |
888 | return -EFAULT; | |
889 | } | |
890 | return data.errcode; | |
891 | ||
892 | case CAPI_INSTALLED: | |
893 | if (capi20_isinstalled() == CAPI_NOERROR) | |
894 | return 0; | |
895 | return -ENXIO; | |
896 | ||
897 | case CAPI_MANUFACTURER_CMD: | |
898 | { | |
899 | struct capi_manufacturer_cmd mcmd; | |
900 | if (!capable(CAP_SYS_ADMIN)) | |
901 | return -EPERM; | |
902 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
903 | return -EFAULT; | |
904 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
905 | } | |
906 | return 0; | |
907 | ||
908 | case CAPI_SET_FLAGS: | |
05b41494 JK |
909 | case CAPI_CLR_FLAGS: { |
910 | unsigned userflags; | |
911 | ||
912 | if (copy_from_user(&userflags, argp, sizeof(userflags))) | |
913 | return -EFAULT; | |
1da177e4 | 914 | |
05b41494 JK |
915 | mutex_lock(&cdev->lock); |
916 | if (cmd == CAPI_SET_FLAGS) | |
917 | cdev->userflags |= userflags; | |
918 | else | |
919 | cdev->userflags &= ~userflags; | |
920 | mutex_unlock(&cdev->lock); | |
921 | return 0; | |
922 | } | |
1da177e4 LT |
923 | case CAPI_GET_FLAGS: |
924 | if (copy_to_user(argp, &cdev->userflags, | |
925 | sizeof(cdev->userflags))) | |
926 | return -EFAULT; | |
927 | return 0; | |
928 | ||
05b41494 JK |
929 | case CAPI_NCCI_OPENCOUNT: { |
930 | struct capincci *nccip; | |
931 | unsigned ncci; | |
932 | int count = 0; | |
1da177e4 | 933 | |
05b41494 JK |
934 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
935 | return -EFAULT; | |
936 | ||
937 | mutex_lock(&cdev->lock); | |
938 | nccip = capincci_find(cdev, (u32)ncci); | |
939 | if (nccip) | |
940 | count = capincci_minor_opencount(nccip); | |
941 | mutex_unlock(&cdev->lock); | |
942 | return count; | |
943 | } | |
1da177e4 LT |
944 | |
945 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
05b41494 JK |
946 | case CAPI_NCCI_GETUNIT: { |
947 | struct capincci *nccip; | |
948 | struct capiminor *mp; | |
949 | unsigned ncci; | |
950 | int unit = -ESRCH; | |
951 | ||
952 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
953 | return -EFAULT; | |
954 | ||
955 | mutex_lock(&cdev->lock); | |
956 | nccip = capincci_find(cdev, (u32)ncci); | |
957 | if (nccip) { | |
958 | mp = nccip->minorp; | |
959 | if (mp) | |
960 | unit = mp->minor; | |
1da177e4 | 961 | } |
05b41494 JK |
962 | mutex_unlock(&cdev->lock); |
963 | return unit; | |
964 | } | |
1da177e4 | 965 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
05b41494 JK |
966 | |
967 | default: | |
968 | return -EINVAL; | |
1da177e4 | 969 | } |
1da177e4 LT |
970 | } |
971 | ||
eca39dd8 | 972 | static int capi_open(struct inode *inode, struct file *file) |
1da177e4 | 973 | { |
eca39dd8 JK |
974 | struct capidev *cdev; |
975 | ||
976 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); | |
977 | if (!cdev) | |
978 | return -ENOMEM; | |
979 | ||
05b41494 | 980 | mutex_init(&cdev->lock); |
eca39dd8 JK |
981 | skb_queue_head_init(&cdev->recvqueue); |
982 | init_waitqueue_head(&cdev->recvwait); | |
884f5c44 | 983 | INIT_LIST_HEAD(&cdev->nccis); |
eca39dd8 JK |
984 | file->private_data = cdev; |
985 | ||
986 | mutex_lock(&capidev_list_lock); | |
987 | list_add_tail(&cdev->list, &capidev_list); | |
988 | mutex_unlock(&capidev_list_lock); | |
989 | ||
990 | return nonseekable_open(inode, file); | |
1da177e4 LT |
991 | } |
992 | ||
eca39dd8 | 993 | static int capi_release(struct inode *inode, struct file *file) |
1da177e4 | 994 | { |
eca39dd8 | 995 | struct capidev *cdev = file->private_data; |
1da177e4 | 996 | |
eca39dd8 JK |
997 | mutex_lock(&capidev_list_lock); |
998 | list_del(&cdev->list); | |
999 | mutex_unlock(&capidev_list_lock); | |
1000 | ||
05b41494 | 1001 | if (cdev->ap.applid) |
eca39dd8 | 1002 | capi20_release(&cdev->ap); |
eca39dd8 | 1003 | skb_queue_purge(&cdev->recvqueue); |
eca39dd8 | 1004 | capincci_free(cdev, 0xffffffff); |
eca39dd8 JK |
1005 | |
1006 | kfree(cdev); | |
1da177e4 LT |
1007 | return 0; |
1008 | } | |
1009 | ||
2b8693c0 | 1010 | static const struct file_operations capi_fops = |
1da177e4 LT |
1011 | { |
1012 | .owner = THIS_MODULE, | |
1013 | .llseek = no_llseek, | |
1014 | .read = capi_read, | |
1015 | .write = capi_write, | |
1016 | .poll = capi_poll, | |
1017 | .ioctl = capi_ioctl, | |
1018 | .open = capi_open, | |
1019 | .release = capi_release, | |
1020 | }; | |
1021 | ||
1022 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1023 | /* -------- tty_operations for capincci ----------------------------- */ | |
1024 | ||
46324511 JK |
1025 | static int |
1026 | capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) | |
1da177e4 | 1027 | { |
46324511 JK |
1028 | int idx = tty->index; |
1029 | struct capiminor *mp = capiminor_get(idx); | |
1030 | int ret = tty_init_termios(tty); | |
1031 | ||
1032 | if (ret == 0) { | |
1033 | tty_driver_kref_get(driver); | |
1034 | tty->count++; | |
1035 | tty->driver_data = mp; | |
1036 | driver->ttys[idx] = tty; | |
1037 | } else | |
1038 | capiminor_put(mp); | |
1039 | return ret; | |
1040 | } | |
1da177e4 | 1041 | |
46324511 JK |
1042 | static void capinc_tty_cleanup(struct tty_struct *tty) |
1043 | { | |
1044 | struct capiminor *mp = tty->driver_data; | |
1045 | tty->driver_data = NULL; | |
1046 | capiminor_put(mp); | |
1047 | } | |
1da177e4 | 1048 | |
fb4b4881 | 1049 | static int capinc_tty_open(struct tty_struct *tty, struct file *filp) |
46324511 JK |
1050 | { |
1051 | struct capiminor *mp = tty->driver_data; | |
1052 | unsigned long flags; | |
fb4b4881 JK |
1053 | int err; |
1054 | ||
1055 | err = tty_port_open(&mp->port, tty, filp); | |
1056 | if (err) | |
1057 | return err; | |
1da177e4 | 1058 | |
053b47ff | 1059 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1060 | atomic_inc(&mp->ttyopencount); |
1061 | #ifdef _DEBUG_REFCOUNT | |
1062 | printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1063 | #endif | |
1064 | handle_minor_recv(mp); | |
053b47ff | 1065 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1066 | return 0; |
1067 | } | |
1068 | ||
fb4b4881 | 1069 | static void capinc_tty_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1070 | { |
46324511 | 1071 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1072 | |
1da177e4 LT |
1073 | if (atomic_dec_and_test(&mp->ttyopencount)) { |
1074 | #ifdef _DEBUG_REFCOUNT | |
1075 | printk(KERN_DEBUG "capinc_tty_close lastclose\n"); | |
1076 | #endif | |
1da177e4 LT |
1077 | } |
1078 | #ifdef _DEBUG_REFCOUNT | |
1079 | printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1080 | #endif | |
0159d549 | 1081 | |
1da177e4 LT |
1082 | #ifdef _DEBUG_REFCOUNT |
1083 | printk(KERN_DEBUG "capinc_tty_close\n"); | |
1084 | #endif | |
fb4b4881 | 1085 | tty_port_close(&mp->port, tty, filp); |
1da177e4 LT |
1086 | } |
1087 | ||
6576c289 | 1088 | static int capinc_tty_write(struct tty_struct *tty, |
1da177e4 LT |
1089 | const unsigned char *buf, int count) |
1090 | { | |
2c8df722 | 1091 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1092 | struct sk_buff *skb; |
053b47ff | 1093 | unsigned long flags; |
1da177e4 LT |
1094 | |
1095 | #ifdef _DEBUG_TTYFUNCS | |
1096 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1097 | #endif | |
1098 | ||
053b47ff | 1099 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1100 | skb = mp->ttyskb; |
1101 | if (skb) { | |
1102 | mp->ttyskb = NULL; | |
1103 | skb_queue_tail(&mp->outqueue, skb); | |
1104 | mp->outbytes += skb->len; | |
1105 | } | |
1106 | ||
1107 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1108 | if (!skb) { | |
1109 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1110 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1111 | return -ENOMEM; |
1112 | } | |
1113 | ||
1114 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1115 | memcpy(skb_put(skb, count), buf, count); | |
1116 | ||
1117 | skb_queue_tail(&mp->outqueue, skb); | |
1118 | mp->outbytes += skb->len; | |
1119 | (void)handle_minor_send(mp); | |
1120 | (void)handle_minor_recv(mp); | |
053b47ff | 1121 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1122 | return count; |
1123 | } | |
1124 | ||
f2545a75 | 1125 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1126 | { |
2c8df722 | 1127 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1128 | struct sk_buff *skb; |
053b47ff | 1129 | unsigned long flags; |
f2545a75 | 1130 | int ret = 1; |
1da177e4 LT |
1131 | |
1132 | #ifdef _DEBUG_TTYFUNCS | |
1133 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1134 | #endif | |
1135 | ||
053b47ff | 1136 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1137 | skb = mp->ttyskb; |
1138 | if (skb) { | |
1139 | if (skb_tailroom(skb) > 0) { | |
1140 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1141 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1142 | return 1; |
1da177e4 LT |
1143 | } |
1144 | mp->ttyskb = NULL; | |
1145 | skb_queue_tail(&mp->outqueue, skb); | |
1146 | mp->outbytes += skb->len; | |
1147 | (void)handle_minor_send(mp); | |
1148 | } | |
1149 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1150 | if (skb) { | |
1151 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1152 | *(skb_put(skb, 1)) = ch; | |
1153 | mp->ttyskb = skb; | |
1154 | } else { | |
1155 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1156 | ret = 0; |
1da177e4 | 1157 | } |
053b47ff | 1158 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1159 | return ret; |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1163 | { | |
2c8df722 | 1164 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1165 | struct sk_buff *skb; |
053b47ff | 1166 | unsigned long flags; |
1da177e4 LT |
1167 | |
1168 | #ifdef _DEBUG_TTYFUNCS | |
1169 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1170 | #endif | |
1171 | ||
053b47ff | 1172 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1173 | skb = mp->ttyskb; |
1174 | if (skb) { | |
1175 | mp->ttyskb = NULL; | |
1176 | skb_queue_tail(&mp->outqueue, skb); | |
1177 | mp->outbytes += skb->len; | |
1178 | (void)handle_minor_send(mp); | |
1179 | } | |
1180 | (void)handle_minor_recv(mp); | |
053b47ff | 1181 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1182 | } |
1183 | ||
1184 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1185 | { | |
2c8df722 | 1186 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1187 | int room; |
2c8df722 | 1188 | |
1da177e4 LT |
1189 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); |
1190 | room *= CAPI_MAX_BLKSIZE; | |
1191 | #ifdef _DEBUG_TTYFUNCS | |
1192 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1193 | #endif | |
1194 | return room; | |
1195 | } | |
1196 | ||
408b664a | 1197 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1198 | { |
2c8df722 JK |
1199 | struct capiminor *mp = tty->driver_data; |
1200 | ||
1da177e4 LT |
1201 | #ifdef _DEBUG_TTYFUNCS |
1202 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1203 | mp->outbytes, mp->nack, | |
1204 | skb_queue_len(&mp->outqueue), | |
1205 | skb_queue_len(&mp->inqueue)); | |
1206 | #endif | |
1207 | return mp->outbytes; | |
1208 | } | |
1209 | ||
1210 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1211 | unsigned int cmd, unsigned long arg) | |
1212 | { | |
1213 | int error = 0; | |
1214 | switch (cmd) { | |
1215 | default: | |
53e86317 | 1216 | error = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
1217 | break; |
1218 | } | |
1219 | return error; | |
1220 | } | |
1221 | ||
606d099c | 1222 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1223 | { |
1224 | #ifdef _DEBUG_TTYFUNCS | |
1225 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1226 | #endif | |
1227 | } | |
1228 | ||
2c8df722 | 1229 | static void capinc_tty_throttle(struct tty_struct *tty) |
1da177e4 | 1230 | { |
2c8df722 | 1231 | struct capiminor *mp = tty->driver_data; |
1da177e4 LT |
1232 | #ifdef _DEBUG_TTYFUNCS |
1233 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1234 | #endif | |
2c8df722 | 1235 | mp->ttyinstop = 1; |
1da177e4 LT |
1236 | } |
1237 | ||
2c8df722 | 1238 | static void capinc_tty_unthrottle(struct tty_struct *tty) |
1da177e4 | 1239 | { |
2c8df722 | 1240 | struct capiminor *mp = tty->driver_data; |
053b47ff | 1241 | unsigned long flags; |
2c8df722 | 1242 | |
1da177e4 LT |
1243 | #ifdef _DEBUG_TTYFUNCS |
1244 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1245 | #endif | |
2c8df722 JK |
1246 | spin_lock_irqsave(&workaround_lock, flags); |
1247 | mp->ttyinstop = 0; | |
1248 | handle_minor_recv(mp); | |
1249 | spin_unlock_irqrestore(&workaround_lock, flags); | |
1da177e4 LT |
1250 | } |
1251 | ||
1252 | static void capinc_tty_stop(struct tty_struct *tty) | |
1253 | { | |
2c8df722 JK |
1254 | struct capiminor *mp = tty->driver_data; |
1255 | ||
1da177e4 LT |
1256 | #ifdef _DEBUG_TTYFUNCS |
1257 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1258 | #endif | |
2c8df722 | 1259 | mp->ttyoutstop = 1; |
1da177e4 LT |
1260 | } |
1261 | ||
1262 | static void capinc_tty_start(struct tty_struct *tty) | |
1263 | { | |
2c8df722 | 1264 | struct capiminor *mp = tty->driver_data; |
053b47ff | 1265 | unsigned long flags; |
2c8df722 | 1266 | |
1da177e4 LT |
1267 | #ifdef _DEBUG_TTYFUNCS |
1268 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1269 | #endif | |
2c8df722 JK |
1270 | spin_lock_irqsave(&workaround_lock, flags); |
1271 | mp->ttyoutstop = 0; | |
1272 | (void)handle_minor_send(mp); | |
1273 | spin_unlock_irqrestore(&workaround_lock, flags); | |
1da177e4 LT |
1274 | } |
1275 | ||
1276 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1277 | { | |
fb4b4881 JK |
1278 | struct capiminor *mp = tty->driver_data; |
1279 | ||
1da177e4 LT |
1280 | #ifdef _DEBUG_TTYFUNCS |
1281 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1282 | #endif | |
fb4b4881 | 1283 | tty_port_hangup(&mp->port); |
1da177e4 LT |
1284 | } |
1285 | ||
9e98966c | 1286 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1287 | { |
1288 | #ifdef _DEBUG_TTYFUNCS | |
1289 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1290 | #endif | |
9e98966c | 1291 | return 0; |
1da177e4 LT |
1292 | } |
1293 | ||
1294 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1295 | { | |
1296 | #ifdef _DEBUG_TTYFUNCS | |
1297 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1298 | #endif | |
1299 | } | |
1300 | ||
1301 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1302 | { | |
1303 | #ifdef _DEBUG_TTYFUNCS | |
1304 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1305 | #endif | |
1306 | } | |
1307 | ||
1308 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1309 | { | |
1310 | #ifdef _DEBUG_TTYFUNCS | |
1311 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1312 | #endif | |
1313 | } | |
1314 | ||
b68e31d0 | 1315 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1316 | .open = capinc_tty_open, |
1317 | .close = capinc_tty_close, | |
1318 | .write = capinc_tty_write, | |
1319 | .put_char = capinc_tty_put_char, | |
1320 | .flush_chars = capinc_tty_flush_chars, | |
1321 | .write_room = capinc_tty_write_room, | |
1322 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1323 | .ioctl = capinc_tty_ioctl, | |
1324 | .set_termios = capinc_tty_set_termios, | |
1325 | .throttle = capinc_tty_throttle, | |
1326 | .unthrottle = capinc_tty_unthrottle, | |
1327 | .stop = capinc_tty_stop, | |
1328 | .start = capinc_tty_start, | |
1329 | .hangup = capinc_tty_hangup, | |
1330 | .break_ctl = capinc_tty_break_ctl, | |
1331 | .flush_buffer = capinc_tty_flush_buffer, | |
1332 | .set_ldisc = capinc_tty_set_ldisc, | |
1333 | .send_xchar = capinc_tty_send_xchar, | |
46324511 JK |
1334 | .install = capinc_tty_install, |
1335 | .cleanup = capinc_tty_cleanup, | |
1da177e4 LT |
1336 | }; |
1337 | ||
e76b1544 | 1338 | static int __init capinc_tty_init(void) |
1da177e4 LT |
1339 | { |
1340 | struct tty_driver *drv; | |
e76b1544 JK |
1341 | int err; |
1342 | ||
1da177e4 LT |
1343 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
1344 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1345 | if (capi_ttyminors <= 0) | |
1346 | capi_ttyminors = CAPINC_NR_PORTS; | |
1347 | ||
81d17fe5 JK |
1348 | capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, |
1349 | GFP_KERNEL); | |
1350 | if (!capiminors) | |
1da177e4 LT |
1351 | return -ENOMEM; |
1352 | ||
81d17fe5 JK |
1353 | drv = alloc_tty_driver(capi_ttyminors); |
1354 | if (!drv) { | |
1355 | kfree(capiminors); | |
1356 | return -ENOMEM; | |
1357 | } | |
1da177e4 LT |
1358 | drv->owner = THIS_MODULE; |
1359 | drv->driver_name = "capi_nc"; | |
1da177e4 | 1360 | drv->name = "capi"; |
e95ac143 | 1361 | drv->major = 0; |
1da177e4 LT |
1362 | drv->minor_start = 0; |
1363 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1364 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1365 | drv->init_termios = tty_std_termios; | |
1366 | drv->init_termios.c_iflag = ICRNL; | |
1367 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1368 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1369 | drv->init_termios.c_lflag = 0; | |
40fb2d0d JK |
1370 | drv->flags = |
1371 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | | |
1372 | TTY_DRIVER_DYNAMIC_DEV; | |
1da177e4 | 1373 | tty_set_operations(drv, &capinc_ops); |
e76b1544 JK |
1374 | |
1375 | err = tty_register_driver(drv); | |
1376 | if (err) { | |
1da177e4 | 1377 | put_tty_driver(drv); |
81d17fe5 | 1378 | kfree(capiminors); |
1da177e4 | 1379 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
e76b1544 | 1380 | return err; |
1da177e4 LT |
1381 | } |
1382 | capinc_tty_driver = drv; | |
1383 | return 0; | |
1384 | } | |
1385 | ||
e76b1544 | 1386 | static void __exit capinc_tty_exit(void) |
1da177e4 | 1387 | { |
e76b1544 JK |
1388 | tty_unregister_driver(capinc_tty_driver); |
1389 | put_tty_driver(capinc_tty_driver); | |
81d17fe5 | 1390 | kfree(capiminors); |
1da177e4 LT |
1391 | } |
1392 | ||
501c87a9 JK |
1393 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
1394 | ||
1395 | static inline int capinc_tty_init(void) | |
1396 | { | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | static inline void capinc_tty_exit(void) { } | |
1401 | ||
1402 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1da177e4 LT |
1403 | |
1404 | /* -------- /proc functions ----------------------------------------- */ | |
1405 | ||
1406 | /* | |
1407 | * /proc/capi/capi20: | |
1408 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1409 | */ | |
9a58a80a | 1410 | static int capi20_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1411 | { |
1412 | struct capidev *cdev; | |
1413 | struct list_head *l; | |
1da177e4 | 1414 | |
b8f433dc | 1415 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1416 | list_for_each(l, &capidev_list) { |
1417 | cdev = list_entry(l, struct capidev, list); | |
9a58a80a | 1418 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
1da177e4 LT |
1419 | cdev->ap.applid, |
1420 | cdev->ap.nrecvctlpkt, | |
1421 | cdev->ap.nrecvdatapkt, | |
1422 | cdev->ap.nsentctlpkt, | |
1423 | cdev->ap.nsentdatapkt); | |
1da177e4 | 1424 | } |
b8f433dc | 1425 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1426 | return 0; |
1da177e4 LT |
1427 | } |
1428 | ||
9a58a80a AD |
1429 | static int capi20_proc_open(struct inode *inode, struct file *file) |
1430 | { | |
1431 | return single_open(file, capi20_proc_show, NULL); | |
1432 | } | |
1433 | ||
1434 | static const struct file_operations capi20_proc_fops = { | |
1435 | .owner = THIS_MODULE, | |
1436 | .open = capi20_proc_open, | |
1437 | .read = seq_read, | |
1438 | .llseek = seq_lseek, | |
1439 | .release = single_release, | |
1440 | }; | |
1441 | ||
1da177e4 LT |
1442 | /* |
1443 | * /proc/capi/capi20ncci: | |
1444 | * applid ncci | |
1445 | */ | |
9a58a80a | 1446 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1447 | { |
884f5c44 JK |
1448 | struct capidev *cdev; |
1449 | struct capincci *np; | |
1da177e4 | 1450 | |
b8f433dc | 1451 | mutex_lock(&capidev_list_lock); |
884f5c44 | 1452 | list_for_each_entry(cdev, &capidev_list, list) { |
05b41494 | 1453 | mutex_lock(&cdev->lock); |
884f5c44 JK |
1454 | list_for_each_entry(np, &cdev->nccis, list) |
1455 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); | |
05b41494 | 1456 | mutex_unlock(&cdev->lock); |
1da177e4 | 1457 | } |
b8f433dc | 1458 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1459 | return 0; |
1da177e4 LT |
1460 | } |
1461 | ||
9a58a80a AD |
1462 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
1463 | { | |
1464 | return single_open(file, capi20ncci_proc_show, NULL); | |
1465 | } | |
1466 | ||
1467 | static const struct file_operations capi20ncci_proc_fops = { | |
1468 | .owner = THIS_MODULE, | |
1469 | .open = capi20ncci_proc_open, | |
1470 | .read = seq_read, | |
1471 | .llseek = seq_lseek, | |
1472 | .release = single_release, | |
1da177e4 LT |
1473 | }; |
1474 | ||
1475 | static void __init proc_init(void) | |
1476 | { | |
9a58a80a AD |
1477 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
1478 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); | |
1da177e4 LT |
1479 | } |
1480 | ||
1481 | static void __exit proc_exit(void) | |
1482 | { | |
9a58a80a AD |
1483 | remove_proc_entry("capi/capi20", NULL); |
1484 | remove_proc_entry("capi/capi20ncci", NULL); | |
1da177e4 LT |
1485 | } |
1486 | ||
1487 | /* -------- init function and module interface ---------------------- */ | |
1488 | ||
1489 | ||
1da177e4 LT |
1490 | static int __init capi_init(void) |
1491 | { | |
88549d6b | 1492 | const char *compileinfo; |
6d9eac34 | 1493 | int major_ret; |
1da177e4 | 1494 | |
6d9eac34 AM |
1495 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1496 | if (major_ret < 0) { | |
1da177e4 | 1497 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1498 | return major_ret; |
1da177e4 | 1499 | } |
56b22935 | 1500 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1501 | if (IS_ERR(capi_class)) { |
1502 | unregister_chrdev(capi_major, "capi20"); | |
1503 | return PTR_ERR(capi_class); | |
1504 | } | |
1505 | ||
a9b12619 | 1506 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
1da177e4 | 1507 | |
1da177e4 | 1508 | if (capinc_tty_init() < 0) { |
d78b0368 | 1509 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1510 | class_destroy(capi_class); |
1da177e4 LT |
1511 | unregister_chrdev(capi_major, "capi20"); |
1512 | return -ENOMEM; | |
1513 | } | |
1da177e4 LT |
1514 | |
1515 | proc_init(); | |
1516 | ||
1da177e4 LT |
1517 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
1518 | compileinfo = " (middleware+capifs)"; | |
501c87a9 | 1519 | #elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE) |
1da177e4 | 1520 | compileinfo = " (no capifs)"; |
1da177e4 LT |
1521 | #else |
1522 | compileinfo = " (no middleware)"; | |
1523 | #endif | |
88549d6b JK |
1524 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
1525 | capi_major, compileinfo); | |
1da177e4 LT |
1526 | |
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | static void __exit capi_exit(void) | |
1531 | { | |
1532 | proc_exit(); | |
1533 | ||
d78b0368 | 1534 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1535 | class_destroy(capi_class); |
1da177e4 | 1536 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 | 1537 | |
1da177e4 | 1538 | capinc_tty_exit(); |
1da177e4 LT |
1539 | } |
1540 | ||
1541 | module_init(capi_init); | |
1542 | module_exit(capi_exit); |