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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 | ||
1da177e4 LT |
48 | #undef _DEBUG_TTYFUNCS /* call to tty_driver */ |
49 | #undef _DEBUG_DATAFLOW /* data flow */ | |
50 | ||
51 | /* -------- driver information -------------------------------------- */ | |
52 | ||
56b22935 | 53 | static struct class *capi_class; |
408b664a | 54 | static int capi_major = 68; /* allocated */ |
501c87a9 JK |
55 | |
56 | module_param_named(major, capi_major, uint, 0); | |
57 | ||
1da177e4 | 58 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
501c87a9 | 59 | #define CAPINC_NR_PORTS 32 |
1da177e4 | 60 | #define CAPINC_MAX_PORTS 256 |
501c87a9 | 61 | |
408b664a | 62 | static int capi_ttyminors = CAPINC_NR_PORTS; |
1da177e4 | 63 | |
1da177e4 LT |
64 | module_param_named(ttyminors, capi_ttyminors, uint, 0); |
65 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
66 | ||
67 | /* -------- defines ------------------------------------------------- */ | |
68 | ||
69 | #define CAPINC_MAX_RECVQUEUE 10 | |
70 | #define CAPINC_MAX_SENDQUEUE 10 | |
71 | #define CAPI_MAX_BLKSIZE 2048 | |
72 | ||
73 | /* -------- data structures ----------------------------------------- */ | |
74 | ||
75 | struct capidev; | |
76 | struct capincci; | |
1da177e4 LT |
77 | struct capiminor; |
78 | ||
6aa65472 MB |
79 | struct datahandle_queue { |
80 | struct list_head list; | |
81 | u16 datahandle; | |
82 | }; | |
83 | ||
1da177e4 | 84 | struct capiminor { |
0159d549 JK |
85 | struct kref kref; |
86 | ||
1da177e4 | 87 | unsigned int minor; |
90926f0e | 88 | struct dentry *capifs_dentry; |
1da177e4 LT |
89 | |
90 | struct capi20_appl *ap; | |
91 | u32 ncci; | |
92 | u16 datahandle; | |
93 | u16 msgid; | |
94 | ||
fb4b4881 | 95 | struct tty_port port; |
1da177e4 LT |
96 | int ttyinstop; |
97 | int ttyoutstop; | |
98 | struct sk_buff *ttyskb; | |
1da177e4 LT |
99 | |
100 | struct sk_buff_head inqueue; | |
101 | int inbytes; | |
102 | struct sk_buff_head outqueue; | |
103 | int outbytes; | |
104 | ||
105 | /* transmit path */ | |
6aa65472 | 106 | struct list_head ackqueue; |
1da177e4 | 107 | int nack; |
6aa65472 | 108 | spinlock_t ackqlock; |
1da177e4 | 109 | }; |
1da177e4 | 110 | |
053b47ff MB |
111 | /* FIXME: The following lock is a sledgehammer-workaround to a |
112 | * locking issue with the capiminor (and maybe other) data structure(s). | |
113 | * Access to this data is done in a racy way and crashes the machine with | |
114 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
115 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
116 | * The correct (and scalable) fix for the issue seems to require | |
117 | * an API change to the drivers... . */ | |
118 | static DEFINE_SPINLOCK(workaround_lock); | |
119 | ||
1da177e4 | 120 | struct capincci { |
884f5c44 | 121 | struct list_head list; |
1da177e4 LT |
122 | u32 ncci; |
123 | struct capidev *cdev; | |
124 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
125 | struct capiminor *minorp; | |
126 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
127 | }; | |
128 | ||
129 | struct capidev { | |
130 | struct list_head list; | |
131 | struct capi20_appl ap; | |
132 | u16 errcode; | |
133 | unsigned userflags; | |
134 | ||
135 | struct sk_buff_head recvqueue; | |
136 | wait_queue_head_t recvwait; | |
137 | ||
884f5c44 | 138 | struct list_head nccis; |
1da177e4 | 139 | |
05b41494 | 140 | struct mutex lock; |
1da177e4 LT |
141 | }; |
142 | ||
143 | /* -------- global variables ---------------------------------------- */ | |
144 | ||
b8f433dc | 145 | static DEFINE_MUTEX(capidev_list_lock); |
1da177e4 LT |
146 | static LIST_HEAD(capidev_list); |
147 | ||
148 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
501c87a9 | 149 | |
3d5d30fe | 150 | static DEFINE_SPINLOCK(capiminors_lock); |
81d17fe5 | 151 | static struct capiminor **capiminors; |
1da177e4 | 152 | |
40fb2d0d JK |
153 | static struct tty_driver *capinc_tty_driver; |
154 | ||
1da177e4 LT |
155 | /* -------- datahandles --------------------------------------------- */ |
156 | ||
501c87a9 | 157 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
1da177e4 | 158 | { |
6aa65472 MB |
159 | struct datahandle_queue *n; |
160 | unsigned long flags; | |
1da177e4 LT |
161 | |
162 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
163 | if (unlikely(!n)) { |
164 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
165 | return -1; | |
1da177e4 | 166 | } |
1da177e4 | 167 | n->datahandle = datahandle; |
6aa65472 MB |
168 | INIT_LIST_HEAD(&n->list); |
169 | spin_lock_irqsave(&mp->ackqlock, flags); | |
170 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 171 | mp->nack++; |
6aa65472 | 172 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
173 | return 0; |
174 | } | |
175 | ||
176 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
177 | { | |
6aa65472 MB |
178 | struct datahandle_queue *p, *tmp; |
179 | unsigned long flags; | |
1da177e4 | 180 | |
6aa65472 MB |
181 | spin_lock_irqsave(&mp->ackqlock, flags); |
182 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
183 | if (p->datahandle == datahandle) { | |
184 | list_del(&p->list); | |
1da177e4 LT |
185 | kfree(p); |
186 | mp->nack--; | |
6aa65472 | 187 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
188 | return 0; |
189 | } | |
190 | } | |
6aa65472 | 191 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
192 | return -1; |
193 | } | |
194 | ||
195 | static void capiminor_del_all_ack(struct capiminor *mp) | |
196 | { | |
6aa65472 MB |
197 | struct datahandle_queue *p, *tmp; |
198 | unsigned long flags; | |
1da177e4 | 199 | |
6aa65472 MB |
200 | spin_lock_irqsave(&mp->ackqlock, flags); |
201 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
202 | list_del(&p->list); | |
1da177e4 LT |
203 | kfree(p); |
204 | mp->nack--; | |
205 | } | |
6aa65472 | 206 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
207 | } |
208 | ||
209 | ||
210 | /* -------- struct capiminor ---------------------------------------- */ | |
211 | ||
fb4b4881 JK |
212 | static const struct tty_port_operations capiminor_port_ops; /* we have none */ |
213 | ||
1da177e4 LT |
214 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) |
215 | { | |
81d17fe5 | 216 | struct capiminor *mp; |
40fb2d0d | 217 | struct device *dev; |
81d17fe5 | 218 | unsigned int minor; |
1da177e4 | 219 | |
54f0fad3 | 220 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
1da177e4 LT |
221 | if (!mp) { |
222 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
223 | return NULL; | |
224 | } | |
225 | ||
0159d549 JK |
226 | kref_init(&mp->kref); |
227 | ||
1da177e4 LT |
228 | mp->ap = ap; |
229 | mp->ncci = ncci; | |
230 | mp->msgid = 0; | |
6aa65472 MB |
231 | INIT_LIST_HEAD(&mp->ackqueue); |
232 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
233 | |
234 | skb_queue_head_init(&mp->inqueue); | |
235 | skb_queue_head_init(&mp->outqueue); | |
236 | ||
fb4b4881 JK |
237 | tty_port_init(&mp->port); |
238 | mp->port.ops = &capiminor_port_ops; | |
239 | ||
81d17fe5 | 240 | /* Allocate the least unused minor number. */ |
3d5d30fe | 241 | spin_lock(&capiminors_lock); |
81d17fe5 JK |
242 | for (minor = 0; minor < capi_ttyminors; minor++) |
243 | if (!capiminors[minor]) { | |
244 | capiminors[minor] = mp; | |
245 | break; | |
1da177e4 | 246 | } |
3d5d30fe | 247 | spin_unlock(&capiminors_lock); |
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: | |
3d5d30fe | 263 | spin_lock(&capiminors_lock); |
40fb2d0d | 264 | capiminors[minor] = NULL; |
3d5d30fe | 265 | spin_unlock(&capiminors_lock); |
40fb2d0d JK |
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 | |
3d5d30fe | 287 | spin_lock(&capiminors_lock); |
81d17fe5 | 288 | mp = capiminors[minor]; |
0159d549 JK |
289 | if (mp) |
290 | kref_get(&mp->kref); | |
3d5d30fe | 291 | spin_unlock(&capiminors_lock); |
81d17fe5 JK |
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 | { | |
0159d549 JK |
303 | tty_unregister_device(capinc_tty_driver, mp->minor); |
304 | ||
3d5d30fe | 305 | spin_lock(&capiminors_lock); |
0159d549 | 306 | capiminors[mp->minor] = NULL; |
3d5d30fe | 307 | spin_unlock(&capiminors_lock); |
0159d549 JK |
308 | |
309 | capiminor_put(mp); | |
310 | } | |
311 | ||
1da177e4 LT |
312 | /* -------- struct capincci ----------------------------------------- */ |
313 | ||
501c87a9 | 314 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
1da177e4 | 315 | { |
501c87a9 | 316 | struct capiminor *mp; |
e95ac143 | 317 | dev_t device; |
1da177e4 | 318 | |
501c87a9 JK |
319 | if (!(cdev->userflags & CAPIFLAG_HIGHJACKING)) |
320 | return; | |
321 | ||
322 | mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci); | |
1da177e4 | 323 | if (mp) { |
e95ac143 JK |
324 | device = MKDEV(capinc_tty_driver->major, mp->minor); |
325 | mp->capifs_dentry = capifs_new_ncci(mp->minor, device); | |
1da177e4 | 326 | } |
501c87a9 JK |
327 | } |
328 | ||
329 | static void capincci_free_minor(struct capincci *np) | |
330 | { | |
331 | struct capiminor *mp = np->minorp; | |
fb4b4881 | 332 | struct tty_struct *tty; |
501c87a9 JK |
333 | |
334 | if (mp) { | |
335 | capifs_free_ncci(mp->capifs_dentry); | |
fb4b4881 JK |
336 | |
337 | tty = tty_port_tty_get(&mp->port); | |
338 | if (tty) { | |
30bced91 | 339 | tty_vhangup(tty); |
fb4b4881 | 340 | tty_kref_put(tty); |
501c87a9 | 341 | } |
fb4b4881 JK |
342 | |
343 | capiminor_free(mp); | |
501c87a9 JK |
344 | } |
345 | } | |
346 | ||
347 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
348 | { | |
349 | struct capiminor *mp = np->minorp; | |
a84fdf41 JK |
350 | unsigned int count = 0; |
351 | struct tty_struct *tty; | |
501c87a9 | 352 | |
a84fdf41 JK |
353 | if (mp) { |
354 | tty = tty_port_tty_get(&mp->port); | |
355 | if (tty) { | |
356 | count = tty->count; | |
357 | tty_kref_put(tty); | |
358 | } | |
359 | } | |
360 | return count; | |
501c87a9 JK |
361 | } |
362 | ||
363 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
364 | ||
365 | static inline void | |
366 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } | |
367 | static inline void capincci_free_minor(struct capincci *np) { } | |
368 | ||
369 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
370 | { | |
371 | return 0; | |
372 | } | |
373 | ||
374 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
375 | ||
376 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) | |
377 | { | |
884f5c44 | 378 | struct capincci *np; |
501c87a9 | 379 | |
54f0fad3 | 380 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
501c87a9 JK |
381 | if (!np) |
382 | return NULL; | |
383 | np->ncci = ncci; | |
384 | np->cdev = cdev; | |
385 | ||
386 | capincci_alloc_minor(cdev, np); | |
387 | ||
884f5c44 JK |
388 | list_add_tail(&np->list, &cdev->nccis); |
389 | ||
390 | return np; | |
1da177e4 LT |
391 | } |
392 | ||
393 | static void capincci_free(struct capidev *cdev, u32 ncci) | |
394 | { | |
884f5c44 | 395 | struct capincci *np, *tmp; |
1da177e4 | 396 | |
884f5c44 | 397 | list_for_each_entry_safe(np, tmp, &cdev->nccis, list) |
1da177e4 | 398 | if (ncci == 0xffffffff || np->ncci == ncci) { |
501c87a9 | 399 | capincci_free_minor(np); |
884f5c44 | 400 | list_del(&np->list); |
1da177e4 | 401 | kfree(np); |
1da177e4 | 402 | } |
1da177e4 LT |
403 | } |
404 | ||
405 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) | |
406 | { | |
884f5c44 | 407 | struct capincci *np; |
1da177e4 | 408 | |
884f5c44 JK |
409 | list_for_each_entry(np, &cdev->nccis, list) |
410 | if (np->ncci == ncci) | |
411 | return np; | |
412 | return NULL; | |
1da177e4 LT |
413 | } |
414 | ||
1da177e4 LT |
415 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
416 | /* -------- handle data queue --------------------------------------- */ | |
417 | ||
418 | static struct sk_buff * | |
419 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) | |
420 | { | |
421 | struct sk_buff *nskb; | |
422 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC); | |
423 | if (nskb) { | |
424 | u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2); | |
425 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); | |
426 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); | |
427 | capimsg_setu16(s, 2, mp->ap->applid); | |
428 | capimsg_setu8 (s, 4, CAPI_DATA_B3); | |
429 | capimsg_setu8 (s, 5, CAPI_RESP); | |
430 | capimsg_setu16(s, 6, mp->msgid++); | |
431 | capimsg_setu32(s, 8, mp->ncci); | |
432 | capimsg_setu16(s, 12, datahandle); | |
433 | } | |
434 | return nskb; | |
435 | } | |
436 | ||
437 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) | |
438 | { | |
a11ef7be | 439 | unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data); |
fb4b4881 | 440 | struct tty_struct *tty; |
1da177e4 | 441 | struct sk_buff *nskb; |
1da177e4 LT |
442 | u16 errcode, datahandle; |
443 | struct tty_ldisc *ld; | |
fb4b4881 JK |
444 | int ret = -1; |
445 | ||
fb4b4881 JK |
446 | tty = tty_port_tty_get(&mp->port); |
447 | if (!tty) { | |
1da177e4 LT |
448 | #ifdef _DEBUG_DATAFLOW |
449 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
450 | #endif | |
451 | return -1; | |
452 | } | |
453 | ||
fb4b4881 | 454 | ld = tty_ldisc_ref(tty); |
a11ef7be JK |
455 | if (!ld) { |
456 | /* fatal error, do not requeue */ | |
457 | ret = 0; | |
458 | kfree_skb(skb); | |
459 | goto deref_tty; | |
460 | } | |
fb4b4881 | 461 | |
a352def2 | 462 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
463 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
464 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
465 | #endif | |
a11ef7be JK |
466 | /* fatal error, do not requeue */ |
467 | goto free_skb; | |
1da177e4 LT |
468 | } |
469 | if (mp->ttyinstop) { | |
470 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
471 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
472 | #endif | |
a11ef7be | 473 | goto deref_ldisc; |
1da177e4 | 474 | } |
a11ef7be | 475 | |
fb4b4881 | 476 | if (tty->receive_room < datalen) { |
1da177e4 LT |
477 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
478 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
479 | #endif | |
a11ef7be | 480 | goto deref_ldisc; |
1da177e4 | 481 | } |
a11ef7be JK |
482 | |
483 | nskb = gen_data_b3_resp_for(mp, skb); | |
484 | if (!nskb) { | |
1da177e4 | 485 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
a11ef7be | 486 | goto deref_ldisc; |
1da177e4 | 487 | } |
a11ef7be JK |
488 | |
489 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); | |
490 | ||
1da177e4 | 491 | errcode = capi20_put_message(mp->ap, nskb); |
a11ef7be JK |
492 | |
493 | if (errcode == CAPI_NOERROR) { | |
494 | skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
495 | #ifdef _DEBUG_DATAFLOW | |
496 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
497 | datahandle, skb->len); | |
498 | #endif | |
499 | ld->ops->receive_buf(tty, skb->data, NULL, skb->len); | |
500 | } else { | |
1da177e4 LT |
501 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", |
502 | errcode); | |
503 | kfree_skb(nskb); | |
a11ef7be JK |
504 | |
505 | if (errcode == CAPI_SENDQUEUEFULL) | |
506 | goto deref_ldisc; | |
1da177e4 | 507 | } |
a11ef7be JK |
508 | |
509 | free_skb: | |
fb4b4881 | 510 | ret = 0; |
a11ef7be JK |
511 | kfree_skb(skb); |
512 | ||
513 | deref_ldisc: | |
1da177e4 | 514 | tty_ldisc_deref(ld); |
a11ef7be JK |
515 | |
516 | deref_tty: | |
fb4b4881 JK |
517 | tty_kref_put(tty); |
518 | return ret; | |
1da177e4 LT |
519 | } |
520 | ||
521 | static void handle_minor_recv(struct capiminor *mp) | |
522 | { | |
523 | struct sk_buff *skb; | |
2f9e9b6d | 524 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) { |
1da177e4 LT |
525 | unsigned int len = skb->len; |
526 | mp->inbytes -= len; | |
527 | if (handle_recv_skb(mp, skb) < 0) { | |
528 | skb_queue_head(&mp->inqueue, skb); | |
529 | mp->inbytes += len; | |
530 | return; | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
535 | static int handle_minor_send(struct capiminor *mp) | |
536 | { | |
fb4b4881 | 537 | struct tty_struct *tty; |
1da177e4 LT |
538 | struct sk_buff *skb; |
539 | u16 len; | |
540 | int count = 0; | |
541 | u16 errcode; | |
542 | u16 datahandle; | |
543 | ||
fb4b4881 JK |
544 | tty = tty_port_tty_get(&mp->port); |
545 | if (!tty) | |
546 | return 0; | |
547 | ||
548 | if (mp->ttyoutstop) { | |
1da177e4 LT |
549 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
550 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
551 | #endif | |
fb4b4881 | 552 | tty_kref_put(tty); |
1da177e4 LT |
553 | return 0; |
554 | } | |
555 | ||
2f9e9b6d | 556 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
1da177e4 LT |
557 | datahandle = mp->datahandle; |
558 | len = (u16)skb->len; | |
559 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
560 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
561 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
562 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
563 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
564 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
565 | capimsg_setu16(skb->data, 6, mp->msgid++); | |
566 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ | |
5e6c20a9 | 567 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
568 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
569 | capimsg_setu16(skb->data, 18, datahandle); | |
570 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
571 | ||
501c87a9 | 572 | if (capiminor_add_ack(mp, datahandle) < 0) { |
1da177e4 LT |
573 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
574 | skb_queue_head(&mp->outqueue, skb); | |
fb4b4881 | 575 | tty_kref_put(tty); |
1da177e4 LT |
576 | return count; |
577 | } | |
578 | errcode = capi20_put_message(mp->ap, skb); | |
579 | if (errcode == CAPI_NOERROR) { | |
580 | mp->datahandle++; | |
581 | count++; | |
582 | mp->outbytes -= len; | |
583 | #ifdef _DEBUG_DATAFLOW | |
584 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
585 | datahandle, len); | |
586 | #endif | |
587 | continue; | |
588 | } | |
589 | capiminor_del_ack(mp, datahandle); | |
590 | ||
591 | if (errcode == CAPI_SENDQUEUEFULL) { | |
592 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
593 | skb_queue_head(&mp->outqueue, skb); | |
594 | break; | |
595 | } | |
596 | ||
597 | /* ups, drop packet */ | |
598 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
599 | mp->outbytes -= len; | |
600 | kfree_skb(skb); | |
601 | } | |
fb4b4881 | 602 | tty_kref_put(tty); |
1da177e4 LT |
603 | return count; |
604 | } | |
605 | ||
606 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
607 | /* -------- function called by lower level -------------------------- */ | |
608 | ||
609 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
610 | { | |
611 | struct capidev *cdev = ap->private; | |
612 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
fb4b4881 | 613 | struct tty_struct *tty; |
1da177e4 LT |
614 | struct capiminor *mp; |
615 | u16 datahandle; | |
616 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
617 | struct capincci *np; | |
053b47ff | 618 | unsigned long flags; |
1da177e4 | 619 | |
05b41494 JK |
620 | mutex_lock(&cdev->lock); |
621 | ||
1da177e4 LT |
622 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
623 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
05b41494 | 624 | if ((info & 0xff00) == 0) |
1da177e4 | 625 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
1da177e4 | 626 | } |
05b41494 | 627 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
1da177e4 | 628 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 629 | |
053b47ff | 630 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
631 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
632 | skb_queue_tail(&cdev->recvqueue, skb); | |
633 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 634 | goto unlock_out; |
1da177e4 | 635 | } |
05b41494 JK |
636 | |
637 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); | |
1da177e4 LT |
638 | if (!np) { |
639 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
640 | skb_queue_tail(&cdev->recvqueue, skb); | |
641 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 642 | goto unlock_out; |
1da177e4 | 643 | } |
501c87a9 | 644 | |
1da177e4 LT |
645 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
646 | skb_queue_tail(&cdev->recvqueue, skb); | |
647 | wake_up_interruptible(&cdev->recvwait); | |
501c87a9 | 648 | |
1da177e4 | 649 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
501c87a9 | 650 | |
1da177e4 LT |
651 | mp = np->minorp; |
652 | if (!mp) { | |
653 | skb_queue_tail(&cdev->recvqueue, skb); | |
654 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 655 | goto unlock_out; |
1da177e4 | 656 | } |
1da177e4 | 657 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
1da177e4 LT |
658 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); |
659 | #ifdef _DEBUG_DATAFLOW | |
660 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
661 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
662 | #endif | |
663 | skb_queue_tail(&mp->inqueue, skb); | |
664 | mp->inbytes += skb->len; | |
665 | handle_minor_recv(mp); | |
666 | ||
667 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
668 | ||
669 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
670 | #ifdef _DEBUG_DATAFLOW | |
671 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
672 | datahandle, | |
673 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
674 | #endif | |
675 | kfree_skb(skb); | |
676 | (void)capiminor_del_ack(mp, datahandle); | |
fb4b4881 JK |
677 | tty = tty_port_tty_get(&mp->port); |
678 | if (tty) { | |
679 | tty_wakeup(tty); | |
680 | tty_kref_put(tty); | |
681 | } | |
1da177e4 LT |
682 | (void)handle_minor_send(mp); |
683 | ||
684 | } else { | |
685 | /* ups, let capi application handle it :-) */ | |
686 | skb_queue_tail(&cdev->recvqueue, skb); | |
687 | wake_up_interruptible(&cdev->recvwait); | |
688 | } | |
689 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
501c87a9 | 690 | |
05b41494 | 691 | unlock_out: |
053b47ff | 692 | spin_unlock_irqrestore(&workaround_lock, flags); |
05b41494 | 693 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
694 | } |
695 | ||
696 | /* -------- file_operations for capidev ----------------------------- */ | |
697 | ||
698 | static ssize_t | |
699 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
700 | { | |
701 | struct capidev *cdev = (struct capidev *)file->private_data; | |
702 | struct sk_buff *skb; | |
703 | size_t copied; | |
28a1dbb6 | 704 | int err; |
1da177e4 LT |
705 | |
706 | if (!cdev->ap.applid) | |
707 | return -ENODEV; | |
708 | ||
28a1dbb6 JK |
709 | skb = skb_dequeue(&cdev->recvqueue); |
710 | if (!skb) { | |
1da177e4 LT |
711 | if (file->f_flags & O_NONBLOCK) |
712 | return -EAGAIN; | |
28a1dbb6 JK |
713 | err = wait_event_interruptible(cdev->recvwait, |
714 | (skb = skb_dequeue(&cdev->recvqueue))); | |
715 | if (err) | |
716 | return err; | |
1da177e4 LT |
717 | } |
718 | if (skb->len > count) { | |
719 | skb_queue_head(&cdev->recvqueue, skb); | |
720 | return -EMSGSIZE; | |
721 | } | |
722 | if (copy_to_user(buf, skb->data, skb->len)) { | |
723 | skb_queue_head(&cdev->recvqueue, skb); | |
724 | return -EFAULT; | |
725 | } | |
726 | copied = skb->len; | |
727 | ||
728 | kfree_skb(skb); | |
729 | ||
730 | return copied; | |
731 | } | |
732 | ||
733 | static ssize_t | |
734 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
735 | { | |
736 | struct capidev *cdev = (struct capidev *)file->private_data; | |
737 | struct sk_buff *skb; | |
738 | u16 mlen; | |
739 | ||
740 | if (!cdev->ap.applid) | |
741 | return -ENODEV; | |
742 | ||
743 | skb = alloc_skb(count, GFP_USER); | |
744 | if (!skb) | |
745 | return -ENOMEM; | |
746 | ||
747 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
748 | kfree_skb(skb); | |
749 | return -EFAULT; | |
750 | } | |
751 | mlen = CAPIMSG_LEN(skb->data); | |
752 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
753 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
754 | kfree_skb(skb); | |
755 | return -EINVAL; | |
756 | } | |
757 | } else { | |
758 | if (mlen != count) { | |
759 | kfree_skb(skb); | |
760 | return -EINVAL; | |
761 | } | |
762 | } | |
763 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
764 | ||
765 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
05b41494 | 766 | mutex_lock(&cdev->lock); |
1da177e4 | 767 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 768 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
769 | } |
770 | ||
771 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
772 | ||
773 | if (cdev->errcode) { | |
774 | kfree_skb(skb); | |
775 | return -EIO; | |
776 | } | |
777 | return count; | |
778 | } | |
779 | ||
780 | static unsigned int | |
781 | capi_poll(struct file *file, poll_table * wait) | |
782 | { | |
783 | struct capidev *cdev = (struct capidev *)file->private_data; | |
784 | unsigned int mask = 0; | |
785 | ||
786 | if (!cdev->ap.applid) | |
787 | return POLLERR; | |
788 | ||
789 | poll_wait(file, &(cdev->recvwait), wait); | |
790 | mask = POLLOUT | POLLWRNORM; | |
791 | if (!skb_queue_empty(&cdev->recvqueue)) | |
792 | mask |= POLLIN | POLLRDNORM; | |
793 | return mask; | |
794 | } | |
795 | ||
796 | static int | |
797 | capi_ioctl(struct inode *inode, struct file *file, | |
798 | unsigned int cmd, unsigned long arg) | |
799 | { | |
800 | struct capidev *cdev = file->private_data; | |
1da177e4 LT |
801 | capi_ioctl_struct data; |
802 | int retval = -EINVAL; | |
803 | void __user *argp = (void __user *)arg; | |
804 | ||
805 | switch (cmd) { | |
806 | case CAPI_REGISTER: | |
05b41494 | 807 | mutex_lock(&cdev->lock); |
1da177e4 | 808 | |
05b41494 JK |
809 | if (cdev->ap.applid) { |
810 | retval = -EEXIST; | |
811 | goto register_out; | |
812 | } | |
813 | if (copy_from_user(&cdev->ap.rparam, argp, | |
814 | sizeof(struct capi_register_params))) { | |
815 | retval = -EFAULT; | |
816 | goto register_out; | |
817 | } | |
818 | cdev->ap.private = cdev; | |
819 | cdev->ap.recv_message = capi_recv_message; | |
820 | cdev->errcode = capi20_register(&cdev->ap); | |
821 | retval = (int)cdev->ap.applid; | |
822 | if (cdev->errcode) { | |
823 | cdev->ap.applid = 0; | |
824 | retval = -EIO; | |
1da177e4 | 825 | } |
05b41494 JK |
826 | |
827 | register_out: | |
828 | mutex_unlock(&cdev->lock); | |
829 | return retval; | |
1da177e4 LT |
830 | |
831 | case CAPI_GET_VERSION: | |
832 | { | |
833 | if (copy_from_user(&data.contr, argp, | |
834 | sizeof(data.contr))) | |
835 | return -EFAULT; | |
836 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
837 | if (cdev->errcode) | |
838 | return -EIO; | |
839 | if (copy_to_user(argp, &data.version, | |
840 | sizeof(data.version))) | |
841 | return -EFAULT; | |
842 | } | |
843 | return 0; | |
844 | ||
845 | case CAPI_GET_SERIAL: | |
846 | { | |
847 | if (copy_from_user(&data.contr, argp, | |
848 | sizeof(data.contr))) | |
849 | return -EFAULT; | |
850 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
851 | if (cdev->errcode) | |
852 | return -EIO; | |
853 | if (copy_to_user(argp, data.serial, | |
854 | sizeof(data.serial))) | |
855 | return -EFAULT; | |
856 | } | |
857 | return 0; | |
858 | case CAPI_GET_PROFILE: | |
859 | { | |
860 | if (copy_from_user(&data.contr, argp, | |
861 | sizeof(data.contr))) | |
862 | return -EFAULT; | |
863 | ||
864 | if (data.contr == 0) { | |
865 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
866 | if (cdev->errcode) | |
867 | return -EIO; | |
868 | ||
869 | retval = copy_to_user(argp, | |
870 | &data.profile.ncontroller, | |
871 | sizeof(data.profile.ncontroller)); | |
872 | ||
873 | } else { | |
874 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
875 | if (cdev->errcode) | |
876 | return -EIO; | |
877 | ||
878 | retval = copy_to_user(argp, &data.profile, | |
879 | sizeof(data.profile)); | |
880 | } | |
881 | if (retval) | |
882 | return -EFAULT; | |
883 | } | |
884 | return 0; | |
885 | ||
886 | case CAPI_GET_MANUFACTURER: | |
887 | { | |
888 | if (copy_from_user(&data.contr, argp, | |
889 | sizeof(data.contr))) | |
890 | return -EFAULT; | |
891 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
892 | if (cdev->errcode) | |
893 | return -EIO; | |
894 | ||
895 | if (copy_to_user(argp, data.manufacturer, | |
896 | sizeof(data.manufacturer))) | |
897 | return -EFAULT; | |
898 | ||
899 | } | |
900 | return 0; | |
901 | case CAPI_GET_ERRCODE: | |
902 | data.errcode = cdev->errcode; | |
903 | cdev->errcode = CAPI_NOERROR; | |
904 | if (arg) { | |
905 | if (copy_to_user(argp, &data.errcode, | |
906 | sizeof(data.errcode))) | |
907 | return -EFAULT; | |
908 | } | |
909 | return data.errcode; | |
910 | ||
911 | case CAPI_INSTALLED: | |
912 | if (capi20_isinstalled() == CAPI_NOERROR) | |
913 | return 0; | |
914 | return -ENXIO; | |
915 | ||
916 | case CAPI_MANUFACTURER_CMD: | |
917 | { | |
918 | struct capi_manufacturer_cmd mcmd; | |
919 | if (!capable(CAP_SYS_ADMIN)) | |
920 | return -EPERM; | |
921 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
922 | return -EFAULT; | |
923 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
924 | } | |
925 | return 0; | |
926 | ||
927 | case CAPI_SET_FLAGS: | |
05b41494 JK |
928 | case CAPI_CLR_FLAGS: { |
929 | unsigned userflags; | |
930 | ||
931 | if (copy_from_user(&userflags, argp, sizeof(userflags))) | |
932 | return -EFAULT; | |
1da177e4 | 933 | |
05b41494 JK |
934 | mutex_lock(&cdev->lock); |
935 | if (cmd == CAPI_SET_FLAGS) | |
936 | cdev->userflags |= userflags; | |
937 | else | |
938 | cdev->userflags &= ~userflags; | |
939 | mutex_unlock(&cdev->lock); | |
940 | return 0; | |
941 | } | |
1da177e4 LT |
942 | case CAPI_GET_FLAGS: |
943 | if (copy_to_user(argp, &cdev->userflags, | |
944 | sizeof(cdev->userflags))) | |
945 | return -EFAULT; | |
946 | return 0; | |
947 | ||
05b41494 JK |
948 | case CAPI_NCCI_OPENCOUNT: { |
949 | struct capincci *nccip; | |
950 | unsigned ncci; | |
951 | int count = 0; | |
1da177e4 | 952 | |
05b41494 JK |
953 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
954 | return -EFAULT; | |
955 | ||
956 | mutex_lock(&cdev->lock); | |
957 | nccip = capincci_find(cdev, (u32)ncci); | |
958 | if (nccip) | |
959 | count = capincci_minor_opencount(nccip); | |
960 | mutex_unlock(&cdev->lock); | |
961 | return count; | |
962 | } | |
1da177e4 LT |
963 | |
964 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
05b41494 JK |
965 | case CAPI_NCCI_GETUNIT: { |
966 | struct capincci *nccip; | |
967 | struct capiminor *mp; | |
968 | unsigned ncci; | |
969 | int unit = -ESRCH; | |
970 | ||
971 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
972 | return -EFAULT; | |
973 | ||
974 | mutex_lock(&cdev->lock); | |
975 | nccip = capincci_find(cdev, (u32)ncci); | |
976 | if (nccip) { | |
977 | mp = nccip->minorp; | |
978 | if (mp) | |
979 | unit = mp->minor; | |
1da177e4 | 980 | } |
05b41494 JK |
981 | mutex_unlock(&cdev->lock); |
982 | return unit; | |
983 | } | |
1da177e4 | 984 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
05b41494 JK |
985 | |
986 | default: | |
987 | return -EINVAL; | |
1da177e4 | 988 | } |
1da177e4 LT |
989 | } |
990 | ||
eca39dd8 | 991 | static int capi_open(struct inode *inode, struct file *file) |
1da177e4 | 992 | { |
eca39dd8 JK |
993 | struct capidev *cdev; |
994 | ||
995 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); | |
996 | if (!cdev) | |
997 | return -ENOMEM; | |
998 | ||
05b41494 | 999 | mutex_init(&cdev->lock); |
eca39dd8 JK |
1000 | skb_queue_head_init(&cdev->recvqueue); |
1001 | init_waitqueue_head(&cdev->recvwait); | |
884f5c44 | 1002 | INIT_LIST_HEAD(&cdev->nccis); |
eca39dd8 JK |
1003 | file->private_data = cdev; |
1004 | ||
1005 | mutex_lock(&capidev_list_lock); | |
1006 | list_add_tail(&cdev->list, &capidev_list); | |
1007 | mutex_unlock(&capidev_list_lock); | |
1008 | ||
1009 | return nonseekable_open(inode, file); | |
1da177e4 LT |
1010 | } |
1011 | ||
eca39dd8 | 1012 | static int capi_release(struct inode *inode, struct file *file) |
1da177e4 | 1013 | { |
eca39dd8 | 1014 | struct capidev *cdev = file->private_data; |
1da177e4 | 1015 | |
eca39dd8 JK |
1016 | mutex_lock(&capidev_list_lock); |
1017 | list_del(&cdev->list); | |
1018 | mutex_unlock(&capidev_list_lock); | |
1019 | ||
05b41494 | 1020 | if (cdev->ap.applid) |
eca39dd8 | 1021 | capi20_release(&cdev->ap); |
eca39dd8 | 1022 | skb_queue_purge(&cdev->recvqueue); |
eca39dd8 | 1023 | capincci_free(cdev, 0xffffffff); |
eca39dd8 JK |
1024 | |
1025 | kfree(cdev); | |
1da177e4 LT |
1026 | return 0; |
1027 | } | |
1028 | ||
2b8693c0 | 1029 | static const struct file_operations capi_fops = |
1da177e4 LT |
1030 | { |
1031 | .owner = THIS_MODULE, | |
1032 | .llseek = no_llseek, | |
1033 | .read = capi_read, | |
1034 | .write = capi_write, | |
1035 | .poll = capi_poll, | |
1036 | .ioctl = capi_ioctl, | |
1037 | .open = capi_open, | |
1038 | .release = capi_release, | |
1039 | }; | |
1040 | ||
1041 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1042 | /* -------- tty_operations for capincci ----------------------------- */ | |
1043 | ||
46324511 JK |
1044 | static int |
1045 | capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) | |
1da177e4 | 1046 | { |
46324511 JK |
1047 | int idx = tty->index; |
1048 | struct capiminor *mp = capiminor_get(idx); | |
1049 | int ret = tty_init_termios(tty); | |
1050 | ||
1051 | if (ret == 0) { | |
1052 | tty_driver_kref_get(driver); | |
1053 | tty->count++; | |
1054 | tty->driver_data = mp; | |
1055 | driver->ttys[idx] = tty; | |
1056 | } else | |
1057 | capiminor_put(mp); | |
1058 | return ret; | |
1059 | } | |
1da177e4 | 1060 | |
46324511 JK |
1061 | static void capinc_tty_cleanup(struct tty_struct *tty) |
1062 | { | |
1063 | struct capiminor *mp = tty->driver_data; | |
1064 | tty->driver_data = NULL; | |
1065 | capiminor_put(mp); | |
1066 | } | |
1da177e4 | 1067 | |
fb4b4881 | 1068 | static int capinc_tty_open(struct tty_struct *tty, struct file *filp) |
46324511 JK |
1069 | { |
1070 | struct capiminor *mp = tty->driver_data; | |
1071 | unsigned long flags; | |
fb4b4881 JK |
1072 | int err; |
1073 | ||
1074 | err = tty_port_open(&mp->port, tty, filp); | |
1075 | if (err) | |
1076 | return err; | |
1da177e4 | 1077 | |
053b47ff | 1078 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 | 1079 | handle_minor_recv(mp); |
053b47ff | 1080 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1081 | return 0; |
1082 | } | |
1083 | ||
fb4b4881 | 1084 | static void capinc_tty_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1085 | { |
46324511 | 1086 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1087 | |
fb4b4881 | 1088 | tty_port_close(&mp->port, tty, filp); |
1da177e4 LT |
1089 | } |
1090 | ||
6576c289 | 1091 | static int capinc_tty_write(struct tty_struct *tty, |
1da177e4 LT |
1092 | const unsigned char *buf, int count) |
1093 | { | |
2c8df722 | 1094 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1095 | struct sk_buff *skb; |
053b47ff | 1096 | unsigned long flags; |
1da177e4 LT |
1097 | |
1098 | #ifdef _DEBUG_TTYFUNCS | |
1099 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1100 | #endif | |
1101 | ||
053b47ff | 1102 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1103 | skb = mp->ttyskb; |
1104 | if (skb) { | |
1105 | mp->ttyskb = NULL; | |
1106 | skb_queue_tail(&mp->outqueue, skb); | |
1107 | mp->outbytes += skb->len; | |
1108 | } | |
1109 | ||
1110 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1111 | if (!skb) { | |
1112 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1113 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1114 | return -ENOMEM; |
1115 | } | |
1116 | ||
1117 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1118 | memcpy(skb_put(skb, count), buf, count); | |
1119 | ||
1120 | skb_queue_tail(&mp->outqueue, skb); | |
1121 | mp->outbytes += skb->len; | |
1122 | (void)handle_minor_send(mp); | |
053b47ff | 1123 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1124 | return count; |
1125 | } | |
1126 | ||
f2545a75 | 1127 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1128 | { |
2c8df722 | 1129 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1130 | struct sk_buff *skb; |
053b47ff | 1131 | unsigned long flags; |
f2545a75 | 1132 | int ret = 1; |
1da177e4 LT |
1133 | |
1134 | #ifdef _DEBUG_TTYFUNCS | |
1135 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1136 | #endif | |
1137 | ||
053b47ff | 1138 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1139 | skb = mp->ttyskb; |
1140 | if (skb) { | |
1141 | if (skb_tailroom(skb) > 0) { | |
1142 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1143 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1144 | return 1; |
1da177e4 LT |
1145 | } |
1146 | mp->ttyskb = NULL; | |
1147 | skb_queue_tail(&mp->outqueue, skb); | |
1148 | mp->outbytes += skb->len; | |
1149 | (void)handle_minor_send(mp); | |
1150 | } | |
1151 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1152 | if (skb) { | |
1153 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1154 | *(skb_put(skb, 1)) = ch; | |
1155 | mp->ttyskb = skb; | |
1156 | } else { | |
1157 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1158 | ret = 0; |
1da177e4 | 1159 | } |
053b47ff | 1160 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1161 | return ret; |
1da177e4 LT |
1162 | } |
1163 | ||
1164 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1165 | { | |
2c8df722 | 1166 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1167 | struct sk_buff *skb; |
053b47ff | 1168 | unsigned long flags; |
1da177e4 LT |
1169 | |
1170 | #ifdef _DEBUG_TTYFUNCS | |
1171 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1172 | #endif | |
1173 | ||
053b47ff | 1174 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1175 | skb = mp->ttyskb; |
1176 | if (skb) { | |
1177 | mp->ttyskb = NULL; | |
1178 | skb_queue_tail(&mp->outqueue, skb); | |
1179 | mp->outbytes += skb->len; | |
1180 | (void)handle_minor_send(mp); | |
1181 | } | |
1182 | (void)handle_minor_recv(mp); | |
053b47ff | 1183 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1184 | } |
1185 | ||
1186 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1187 | { | |
2c8df722 | 1188 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1189 | int room; |
2c8df722 | 1190 | |
1da177e4 LT |
1191 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); |
1192 | room *= CAPI_MAX_BLKSIZE; | |
1193 | #ifdef _DEBUG_TTYFUNCS | |
1194 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1195 | #endif | |
1196 | return room; | |
1197 | } | |
1198 | ||
408b664a | 1199 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1200 | { |
2c8df722 JK |
1201 | struct capiminor *mp = tty->driver_data; |
1202 | ||
1da177e4 LT |
1203 | #ifdef _DEBUG_TTYFUNCS |
1204 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1205 | mp->outbytes, mp->nack, | |
1206 | skb_queue_len(&mp->outqueue), | |
1207 | skb_queue_len(&mp->inqueue)); | |
1208 | #endif | |
1209 | return mp->outbytes; | |
1210 | } | |
1211 | ||
1212 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1213 | unsigned int cmd, unsigned long arg) | |
1214 | { | |
1215 | int error = 0; | |
1216 | switch (cmd) { | |
1217 | default: | |
53e86317 | 1218 | error = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
1219 | break; |
1220 | } | |
1221 | return error; | |
1222 | } | |
1223 | ||
606d099c | 1224 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1225 | { |
1226 | #ifdef _DEBUG_TTYFUNCS | |
1227 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1228 | #endif | |
1229 | } | |
1230 | ||
2c8df722 | 1231 | static void capinc_tty_throttle(struct tty_struct *tty) |
1da177e4 | 1232 | { |
2c8df722 | 1233 | struct capiminor *mp = tty->driver_data; |
1da177e4 LT |
1234 | #ifdef _DEBUG_TTYFUNCS |
1235 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1236 | #endif | |
2c8df722 | 1237 | mp->ttyinstop = 1; |
1da177e4 LT |
1238 | } |
1239 | ||
2c8df722 | 1240 | static void capinc_tty_unthrottle(struct tty_struct *tty) |
1da177e4 | 1241 | { |
2c8df722 | 1242 | struct capiminor *mp = tty->driver_data; |
053b47ff | 1243 | unsigned long flags; |
2c8df722 | 1244 | |
1da177e4 LT |
1245 | #ifdef _DEBUG_TTYFUNCS |
1246 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1247 | #endif | |
2c8df722 JK |
1248 | spin_lock_irqsave(&workaround_lock, flags); |
1249 | mp->ttyinstop = 0; | |
1250 | handle_minor_recv(mp); | |
1251 | spin_unlock_irqrestore(&workaround_lock, flags); | |
1da177e4 LT |
1252 | } |
1253 | ||
1254 | static void capinc_tty_stop(struct tty_struct *tty) | |
1255 | { | |
2c8df722 JK |
1256 | struct capiminor *mp = tty->driver_data; |
1257 | ||
1da177e4 LT |
1258 | #ifdef _DEBUG_TTYFUNCS |
1259 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1260 | #endif | |
2c8df722 | 1261 | mp->ttyoutstop = 1; |
1da177e4 LT |
1262 | } |
1263 | ||
1264 | static void capinc_tty_start(struct tty_struct *tty) | |
1265 | { | |
2c8df722 | 1266 | struct capiminor *mp = tty->driver_data; |
053b47ff | 1267 | unsigned long flags; |
2c8df722 | 1268 | |
1da177e4 LT |
1269 | #ifdef _DEBUG_TTYFUNCS |
1270 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1271 | #endif | |
2c8df722 JK |
1272 | spin_lock_irqsave(&workaround_lock, flags); |
1273 | mp->ttyoutstop = 0; | |
1274 | (void)handle_minor_send(mp); | |
1275 | spin_unlock_irqrestore(&workaround_lock, flags); | |
1da177e4 LT |
1276 | } |
1277 | ||
1278 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1279 | { | |
fb4b4881 JK |
1280 | struct capiminor *mp = tty->driver_data; |
1281 | ||
1da177e4 LT |
1282 | #ifdef _DEBUG_TTYFUNCS |
1283 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1284 | #endif | |
fb4b4881 | 1285 | tty_port_hangup(&mp->port); |
1da177e4 LT |
1286 | } |
1287 | ||
9e98966c | 1288 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1289 | { |
1290 | #ifdef _DEBUG_TTYFUNCS | |
1291 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1292 | #endif | |
9e98966c | 1293 | return 0; |
1da177e4 LT |
1294 | } |
1295 | ||
1296 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1297 | { | |
1298 | #ifdef _DEBUG_TTYFUNCS | |
1299 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1300 | #endif | |
1301 | } | |
1302 | ||
1303 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1304 | { | |
1305 | #ifdef _DEBUG_TTYFUNCS | |
1306 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1307 | #endif | |
1308 | } | |
1309 | ||
1310 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1311 | { | |
1312 | #ifdef _DEBUG_TTYFUNCS | |
1313 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1314 | #endif | |
1315 | } | |
1316 | ||
b68e31d0 | 1317 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1318 | .open = capinc_tty_open, |
1319 | .close = capinc_tty_close, | |
1320 | .write = capinc_tty_write, | |
1321 | .put_char = capinc_tty_put_char, | |
1322 | .flush_chars = capinc_tty_flush_chars, | |
1323 | .write_room = capinc_tty_write_room, | |
1324 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1325 | .ioctl = capinc_tty_ioctl, | |
1326 | .set_termios = capinc_tty_set_termios, | |
1327 | .throttle = capinc_tty_throttle, | |
1328 | .unthrottle = capinc_tty_unthrottle, | |
1329 | .stop = capinc_tty_stop, | |
1330 | .start = capinc_tty_start, | |
1331 | .hangup = capinc_tty_hangup, | |
1332 | .break_ctl = capinc_tty_break_ctl, | |
1333 | .flush_buffer = capinc_tty_flush_buffer, | |
1334 | .set_ldisc = capinc_tty_set_ldisc, | |
1335 | .send_xchar = capinc_tty_send_xchar, | |
46324511 JK |
1336 | .install = capinc_tty_install, |
1337 | .cleanup = capinc_tty_cleanup, | |
1da177e4 LT |
1338 | }; |
1339 | ||
e76b1544 | 1340 | static int __init capinc_tty_init(void) |
1da177e4 LT |
1341 | { |
1342 | struct tty_driver *drv; | |
e76b1544 JK |
1343 | int err; |
1344 | ||
1da177e4 LT |
1345 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
1346 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1347 | if (capi_ttyminors <= 0) | |
1348 | capi_ttyminors = CAPINC_NR_PORTS; | |
1349 | ||
81d17fe5 JK |
1350 | capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, |
1351 | GFP_KERNEL); | |
1352 | if (!capiminors) | |
1da177e4 LT |
1353 | return -ENOMEM; |
1354 | ||
81d17fe5 JK |
1355 | drv = alloc_tty_driver(capi_ttyminors); |
1356 | if (!drv) { | |
1357 | kfree(capiminors); | |
1358 | return -ENOMEM; | |
1359 | } | |
1da177e4 LT |
1360 | drv->owner = THIS_MODULE; |
1361 | drv->driver_name = "capi_nc"; | |
1da177e4 | 1362 | drv->name = "capi"; |
e95ac143 | 1363 | drv->major = 0; |
1da177e4 LT |
1364 | drv->minor_start = 0; |
1365 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1366 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1367 | drv->init_termios = tty_std_termios; | |
1368 | drv->init_termios.c_iflag = ICRNL; | |
1369 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1370 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1371 | drv->init_termios.c_lflag = 0; | |
40fb2d0d JK |
1372 | drv->flags = |
1373 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | | |
1374 | TTY_DRIVER_DYNAMIC_DEV; | |
1da177e4 | 1375 | tty_set_operations(drv, &capinc_ops); |
e76b1544 JK |
1376 | |
1377 | err = tty_register_driver(drv); | |
1378 | if (err) { | |
1da177e4 | 1379 | put_tty_driver(drv); |
81d17fe5 | 1380 | kfree(capiminors); |
1da177e4 | 1381 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
e76b1544 | 1382 | return err; |
1da177e4 LT |
1383 | } |
1384 | capinc_tty_driver = drv; | |
1385 | return 0; | |
1386 | } | |
1387 | ||
e76b1544 | 1388 | static void __exit capinc_tty_exit(void) |
1da177e4 | 1389 | { |
e76b1544 JK |
1390 | tty_unregister_driver(capinc_tty_driver); |
1391 | put_tty_driver(capinc_tty_driver); | |
81d17fe5 | 1392 | kfree(capiminors); |
1da177e4 LT |
1393 | } |
1394 | ||
501c87a9 JK |
1395 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
1396 | ||
1397 | static inline int capinc_tty_init(void) | |
1398 | { | |
1399 | return 0; | |
1400 | } | |
1401 | ||
1402 | static inline void capinc_tty_exit(void) { } | |
1403 | ||
1404 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1da177e4 LT |
1405 | |
1406 | /* -------- /proc functions ----------------------------------------- */ | |
1407 | ||
1408 | /* | |
1409 | * /proc/capi/capi20: | |
1410 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1411 | */ | |
9a58a80a | 1412 | static int capi20_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1413 | { |
1414 | struct capidev *cdev; | |
1415 | struct list_head *l; | |
1da177e4 | 1416 | |
b8f433dc | 1417 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1418 | list_for_each(l, &capidev_list) { |
1419 | cdev = list_entry(l, struct capidev, list); | |
9a58a80a | 1420 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
1da177e4 LT |
1421 | cdev->ap.applid, |
1422 | cdev->ap.nrecvctlpkt, | |
1423 | cdev->ap.nrecvdatapkt, | |
1424 | cdev->ap.nsentctlpkt, | |
1425 | cdev->ap.nsentdatapkt); | |
1da177e4 | 1426 | } |
b8f433dc | 1427 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1428 | return 0; |
1da177e4 LT |
1429 | } |
1430 | ||
9a58a80a AD |
1431 | static int capi20_proc_open(struct inode *inode, struct file *file) |
1432 | { | |
1433 | return single_open(file, capi20_proc_show, NULL); | |
1434 | } | |
1435 | ||
1436 | static const struct file_operations capi20_proc_fops = { | |
1437 | .owner = THIS_MODULE, | |
1438 | .open = capi20_proc_open, | |
1439 | .read = seq_read, | |
1440 | .llseek = seq_lseek, | |
1441 | .release = single_release, | |
1442 | }; | |
1443 | ||
1da177e4 LT |
1444 | /* |
1445 | * /proc/capi/capi20ncci: | |
1446 | * applid ncci | |
1447 | */ | |
9a58a80a | 1448 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1449 | { |
884f5c44 JK |
1450 | struct capidev *cdev; |
1451 | struct capincci *np; | |
1da177e4 | 1452 | |
b8f433dc | 1453 | mutex_lock(&capidev_list_lock); |
884f5c44 | 1454 | list_for_each_entry(cdev, &capidev_list, list) { |
05b41494 | 1455 | mutex_lock(&cdev->lock); |
884f5c44 JK |
1456 | list_for_each_entry(np, &cdev->nccis, list) |
1457 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); | |
05b41494 | 1458 | mutex_unlock(&cdev->lock); |
1da177e4 | 1459 | } |
b8f433dc | 1460 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1461 | return 0; |
1da177e4 LT |
1462 | } |
1463 | ||
9a58a80a AD |
1464 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
1465 | { | |
1466 | return single_open(file, capi20ncci_proc_show, NULL); | |
1467 | } | |
1468 | ||
1469 | static const struct file_operations capi20ncci_proc_fops = { | |
1470 | .owner = THIS_MODULE, | |
1471 | .open = capi20ncci_proc_open, | |
1472 | .read = seq_read, | |
1473 | .llseek = seq_lseek, | |
1474 | .release = single_release, | |
1da177e4 LT |
1475 | }; |
1476 | ||
1477 | static void __init proc_init(void) | |
1478 | { | |
9a58a80a AD |
1479 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
1480 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); | |
1da177e4 LT |
1481 | } |
1482 | ||
1483 | static void __exit proc_exit(void) | |
1484 | { | |
9a58a80a AD |
1485 | remove_proc_entry("capi/capi20", NULL); |
1486 | remove_proc_entry("capi/capi20ncci", NULL); | |
1da177e4 LT |
1487 | } |
1488 | ||
1489 | /* -------- init function and module interface ---------------------- */ | |
1490 | ||
1491 | ||
1da177e4 LT |
1492 | static int __init capi_init(void) |
1493 | { | |
88549d6b | 1494 | const char *compileinfo; |
6d9eac34 | 1495 | int major_ret; |
1da177e4 | 1496 | |
6d9eac34 AM |
1497 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1498 | if (major_ret < 0) { | |
1da177e4 | 1499 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1500 | return major_ret; |
1da177e4 | 1501 | } |
56b22935 | 1502 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1503 | if (IS_ERR(capi_class)) { |
1504 | unregister_chrdev(capi_major, "capi20"); | |
1505 | return PTR_ERR(capi_class); | |
1506 | } | |
1507 | ||
a9b12619 | 1508 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
1da177e4 | 1509 | |
1da177e4 | 1510 | if (capinc_tty_init() < 0) { |
d78b0368 | 1511 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1512 | class_destroy(capi_class); |
1da177e4 LT |
1513 | unregister_chrdev(capi_major, "capi20"); |
1514 | return -ENOMEM; | |
1515 | } | |
1da177e4 LT |
1516 | |
1517 | proc_init(); | |
1518 | ||
1da177e4 LT |
1519 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
1520 | compileinfo = " (middleware+capifs)"; | |
501c87a9 | 1521 | #elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE) |
1da177e4 | 1522 | compileinfo = " (no capifs)"; |
1da177e4 LT |
1523 | #else |
1524 | compileinfo = " (no middleware)"; | |
1525 | #endif | |
88549d6b JK |
1526 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
1527 | capi_major, compileinfo); | |
1da177e4 LT |
1528 | |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | static void __exit capi_exit(void) | |
1533 | { | |
1534 | proc_exit(); | |
1535 | ||
d78b0368 | 1536 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1537 | class_destroy(capi_class); |
1da177e4 | 1538 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 | 1539 | |
1da177e4 | 1540 | capinc_tty_exit(); |
1da177e4 LT |
1541 | } |
1542 | ||
1543 | module_init(capi_init); | |
1544 | module_exit(capi_exit); |