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 | ||
42651b5c | 79 | struct ackqueue_entry { |
6aa65472 MB |
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 | 89 | |
42792713 JK |
90 | struct capi20_appl *ap; |
91 | u32 ncci; | |
92 | atomic_t datahandle; | |
93 | atomic_t msgid; | |
1da177e4 | 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; | |
1da177e4 LT |
101 | struct sk_buff_head outqueue; |
102 | int outbytes; | |
103 | ||
104 | /* transmit path */ | |
6aa65472 | 105 | struct list_head ackqueue; |
1da177e4 | 106 | int nack; |
6aa65472 | 107 | spinlock_t ackqlock; |
1da177e4 | 108 | }; |
1da177e4 | 109 | |
053b47ff MB |
110 | /* FIXME: The following lock is a sledgehammer-workaround to a |
111 | * locking issue with the capiminor (and maybe other) data structure(s). | |
112 | * Access to this data is done in a racy way and crashes the machine with | |
113 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
114 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
115 | * The correct (and scalable) fix for the issue seems to require | |
116 | * an API change to the drivers... . */ | |
117 | static DEFINE_SPINLOCK(workaround_lock); | |
118 | ||
1da177e4 | 119 | struct capincci { |
884f5c44 | 120 | struct list_head list; |
1da177e4 LT |
121 | u32 ncci; |
122 | struct capidev *cdev; | |
123 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
124 | struct capiminor *minorp; | |
125 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
126 | }; | |
127 | ||
128 | struct capidev { | |
129 | struct list_head list; | |
130 | struct capi20_appl ap; | |
131 | u16 errcode; | |
132 | unsigned userflags; | |
133 | ||
134 | struct sk_buff_head recvqueue; | |
135 | wait_queue_head_t recvwait; | |
136 | ||
884f5c44 | 137 | struct list_head nccis; |
1da177e4 | 138 | |
05b41494 | 139 | struct mutex lock; |
1da177e4 LT |
140 | }; |
141 | ||
142 | /* -------- global variables ---------------------------------------- */ | |
143 | ||
b8f433dc | 144 | static DEFINE_MUTEX(capidev_list_lock); |
1da177e4 LT |
145 | static LIST_HEAD(capidev_list); |
146 | ||
147 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
501c87a9 | 148 | |
3d5d30fe | 149 | static DEFINE_SPINLOCK(capiminors_lock); |
81d17fe5 | 150 | static struct capiminor **capiminors; |
1da177e4 | 151 | |
40fb2d0d JK |
152 | static struct tty_driver *capinc_tty_driver; |
153 | ||
1da177e4 LT |
154 | /* -------- datahandles --------------------------------------------- */ |
155 | ||
501c87a9 | 156 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
1da177e4 | 157 | { |
42651b5c | 158 | struct ackqueue_entry *n; |
6aa65472 | 159 | unsigned long flags; |
1da177e4 LT |
160 | |
161 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
162 | if (unlikely(!n)) { |
163 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
164 | return -1; | |
1da177e4 | 165 | } |
1da177e4 | 166 | n->datahandle = datahandle; |
6aa65472 MB |
167 | INIT_LIST_HEAD(&n->list); |
168 | spin_lock_irqsave(&mp->ackqlock, flags); | |
169 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 170 | mp->nack++; |
6aa65472 | 171 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
172 | return 0; |
173 | } | |
174 | ||
175 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
176 | { | |
42651b5c | 177 | struct ackqueue_entry *p, *tmp; |
6aa65472 | 178 | unsigned long flags; |
1da177e4 | 179 | |
6aa65472 MB |
180 | spin_lock_irqsave(&mp->ackqlock, flags); |
181 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
182 | if (p->datahandle == datahandle) { | |
183 | list_del(&p->list); | |
1da177e4 LT |
184 | kfree(p); |
185 | mp->nack--; | |
6aa65472 | 186 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
187 | return 0; |
188 | } | |
189 | } | |
6aa65472 | 190 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
191 | return -1; |
192 | } | |
193 | ||
194 | static void capiminor_del_all_ack(struct capiminor *mp) | |
195 | { | |
42651b5c | 196 | struct ackqueue_entry *p, *tmp; |
6aa65472 | 197 | unsigned long flags; |
1da177e4 | 198 | |
6aa65472 MB |
199 | spin_lock_irqsave(&mp->ackqlock, flags); |
200 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
201 | list_del(&p->list); | |
1da177e4 LT |
202 | kfree(p); |
203 | mp->nack--; | |
204 | } | |
6aa65472 | 205 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
206 | } |
207 | ||
208 | ||
209 | /* -------- struct capiminor ---------------------------------------- */ | |
210 | ||
fb4b4881 JK |
211 | static const struct tty_port_operations capiminor_port_ops; /* we have none */ |
212 | ||
1da177e4 LT |
213 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) |
214 | { | |
81d17fe5 | 215 | struct capiminor *mp; |
40fb2d0d | 216 | struct device *dev; |
81d17fe5 | 217 | unsigned int minor; |
1da177e4 | 218 | |
54f0fad3 | 219 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
1da177e4 LT |
220 | if (!mp) { |
221 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
222 | return NULL; | |
223 | } | |
224 | ||
0159d549 JK |
225 | kref_init(&mp->kref); |
226 | ||
1da177e4 LT |
227 | mp->ap = ap; |
228 | mp->ncci = ncci; | |
6aa65472 MB |
229 | INIT_LIST_HEAD(&mp->ackqueue); |
230 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
231 | |
232 | skb_queue_head_init(&mp->inqueue); | |
233 | skb_queue_head_init(&mp->outqueue); | |
234 | ||
fb4b4881 JK |
235 | tty_port_init(&mp->port); |
236 | mp->port.ops = &capiminor_port_ops; | |
237 | ||
81d17fe5 | 238 | /* Allocate the least unused minor number. */ |
3d5d30fe | 239 | spin_lock(&capiminors_lock); |
81d17fe5 JK |
240 | for (minor = 0; minor < capi_ttyminors; minor++) |
241 | if (!capiminors[minor]) { | |
242 | capiminors[minor] = mp; | |
243 | break; | |
1da177e4 | 244 | } |
3d5d30fe | 245 | spin_unlock(&capiminors_lock); |
1da177e4 | 246 | |
81d17fe5 | 247 | if (minor == capi_ttyminors) { |
1da177e4 | 248 | printk(KERN_NOTICE "capi: out of minors\n"); |
40fb2d0d | 249 | goto err_out1; |
1da177e4 LT |
250 | } |
251 | ||
81d17fe5 JK |
252 | mp->minor = minor; |
253 | ||
40fb2d0d JK |
254 | dev = tty_register_device(capinc_tty_driver, minor, NULL); |
255 | if (IS_ERR(dev)) | |
256 | goto err_out2; | |
257 | ||
1da177e4 | 258 | return mp; |
40fb2d0d JK |
259 | |
260 | err_out2: | |
3d5d30fe | 261 | spin_lock(&capiminors_lock); |
40fb2d0d | 262 | capiminors[minor] = NULL; |
3d5d30fe | 263 | spin_unlock(&capiminors_lock); |
40fb2d0d JK |
264 | |
265 | err_out1: | |
266 | kfree(mp); | |
267 | return NULL; | |
1da177e4 LT |
268 | } |
269 | ||
0159d549 | 270 | static void capiminor_destroy(struct kref *kref) |
1da177e4 | 271 | { |
0159d549 | 272 | struct capiminor *mp = container_of(kref, struct capiminor, kref); |
1da177e4 | 273 | |
d46604e1 | 274 | kfree_skb(mp->ttyskb); |
1da177e4 LT |
275 | skb_queue_purge(&mp->inqueue); |
276 | skb_queue_purge(&mp->outqueue); | |
277 | capiminor_del_all_ack(mp); | |
278 | kfree(mp); | |
279 | } | |
280 | ||
40fb2d0d | 281 | static struct capiminor *capiminor_get(unsigned int minor) |
1da177e4 | 282 | { |
81d17fe5 | 283 | struct capiminor *mp; |
1da177e4 | 284 | |
3d5d30fe | 285 | spin_lock(&capiminors_lock); |
81d17fe5 | 286 | mp = capiminors[minor]; |
0159d549 JK |
287 | if (mp) |
288 | kref_get(&mp->kref); | |
3d5d30fe | 289 | spin_unlock(&capiminors_lock); |
81d17fe5 JK |
290 | |
291 | return mp; | |
1da177e4 | 292 | } |
1da177e4 | 293 | |
0159d549 JK |
294 | static inline void capiminor_put(struct capiminor *mp) |
295 | { | |
296 | kref_put(&mp->kref, capiminor_destroy); | |
297 | } | |
298 | ||
299 | static void capiminor_free(struct capiminor *mp) | |
300 | { | |
0159d549 JK |
301 | tty_unregister_device(capinc_tty_driver, mp->minor); |
302 | ||
3d5d30fe | 303 | spin_lock(&capiminors_lock); |
0159d549 | 304 | capiminors[mp->minor] = NULL; |
3d5d30fe | 305 | spin_unlock(&capiminors_lock); |
0159d549 JK |
306 | |
307 | capiminor_put(mp); | |
308 | } | |
309 | ||
1da177e4 LT |
310 | /* -------- struct capincci ----------------------------------------- */ |
311 | ||
501c87a9 | 312 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
1da177e4 | 313 | { |
501c87a9 | 314 | struct capiminor *mp; |
e95ac143 | 315 | dev_t device; |
1da177e4 | 316 | |
501c87a9 JK |
317 | if (!(cdev->userflags & CAPIFLAG_HIGHJACKING)) |
318 | return; | |
319 | ||
320 | mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci); | |
1da177e4 | 321 | if (mp) { |
e95ac143 JK |
322 | device = MKDEV(capinc_tty_driver->major, mp->minor); |
323 | mp->capifs_dentry = capifs_new_ncci(mp->minor, device); | |
1da177e4 | 324 | } |
501c87a9 JK |
325 | } |
326 | ||
327 | static void capincci_free_minor(struct capincci *np) | |
328 | { | |
329 | struct capiminor *mp = np->minorp; | |
fb4b4881 | 330 | struct tty_struct *tty; |
501c87a9 JK |
331 | |
332 | if (mp) { | |
333 | capifs_free_ncci(mp->capifs_dentry); | |
fb4b4881 JK |
334 | |
335 | tty = tty_port_tty_get(&mp->port); | |
336 | if (tty) { | |
30bced91 | 337 | tty_vhangup(tty); |
fb4b4881 | 338 | tty_kref_put(tty); |
501c87a9 | 339 | } |
fb4b4881 JK |
340 | |
341 | capiminor_free(mp); | |
501c87a9 JK |
342 | } |
343 | } | |
344 | ||
345 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
346 | { | |
347 | struct capiminor *mp = np->minorp; | |
a84fdf41 JK |
348 | unsigned int count = 0; |
349 | struct tty_struct *tty; | |
501c87a9 | 350 | |
a84fdf41 JK |
351 | if (mp) { |
352 | tty = tty_port_tty_get(&mp->port); | |
353 | if (tty) { | |
354 | count = tty->count; | |
355 | tty_kref_put(tty); | |
356 | } | |
357 | } | |
358 | return count; | |
501c87a9 JK |
359 | } |
360 | ||
361 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
362 | ||
363 | static inline void | |
364 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } | |
365 | static inline void capincci_free_minor(struct capincci *np) { } | |
366 | ||
367 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
368 | { | |
369 | return 0; | |
370 | } | |
371 | ||
372 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
373 | ||
374 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) | |
375 | { | |
884f5c44 | 376 | struct capincci *np; |
501c87a9 | 377 | |
54f0fad3 | 378 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
501c87a9 JK |
379 | if (!np) |
380 | return NULL; | |
381 | np->ncci = ncci; | |
382 | np->cdev = cdev; | |
383 | ||
384 | capincci_alloc_minor(cdev, np); | |
385 | ||
884f5c44 JK |
386 | list_add_tail(&np->list, &cdev->nccis); |
387 | ||
388 | return np; | |
1da177e4 LT |
389 | } |
390 | ||
391 | static void capincci_free(struct capidev *cdev, u32 ncci) | |
392 | { | |
884f5c44 | 393 | struct capincci *np, *tmp; |
1da177e4 | 394 | |
884f5c44 | 395 | list_for_each_entry_safe(np, tmp, &cdev->nccis, list) |
1da177e4 | 396 | if (ncci == 0xffffffff || np->ncci == ncci) { |
501c87a9 | 397 | capincci_free_minor(np); |
884f5c44 | 398 | list_del(&np->list); |
1da177e4 | 399 | kfree(np); |
1da177e4 | 400 | } |
1da177e4 LT |
401 | } |
402 | ||
403 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) | |
404 | { | |
884f5c44 | 405 | struct capincci *np; |
1da177e4 | 406 | |
884f5c44 JK |
407 | list_for_each_entry(np, &cdev->nccis, list) |
408 | if (np->ncci == ncci) | |
409 | return np; | |
410 | return NULL; | |
1da177e4 LT |
411 | } |
412 | ||
1da177e4 LT |
413 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
414 | /* -------- handle data queue --------------------------------------- */ | |
415 | ||
416 | static struct sk_buff * | |
417 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) | |
418 | { | |
419 | struct sk_buff *nskb; | |
420 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC); | |
421 | if (nskb) { | |
422 | u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2); | |
423 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); | |
424 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); | |
425 | capimsg_setu16(s, 2, mp->ap->applid); | |
426 | capimsg_setu8 (s, 4, CAPI_DATA_B3); | |
427 | capimsg_setu8 (s, 5, CAPI_RESP); | |
42792713 | 428 | capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid)); |
1da177e4 LT |
429 | capimsg_setu32(s, 8, mp->ncci); |
430 | capimsg_setu16(s, 12, datahandle); | |
431 | } | |
432 | return nskb; | |
433 | } | |
434 | ||
435 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) | |
436 | { | |
a11ef7be | 437 | unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data); |
fb4b4881 | 438 | struct tty_struct *tty; |
1da177e4 | 439 | struct sk_buff *nskb; |
1da177e4 LT |
440 | u16 errcode, datahandle; |
441 | struct tty_ldisc *ld; | |
fb4b4881 JK |
442 | int ret = -1; |
443 | ||
fb4b4881 JK |
444 | tty = tty_port_tty_get(&mp->port); |
445 | if (!tty) { | |
1da177e4 LT |
446 | #ifdef _DEBUG_DATAFLOW |
447 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
448 | #endif | |
449 | return -1; | |
450 | } | |
451 | ||
fb4b4881 | 452 | ld = tty_ldisc_ref(tty); |
a11ef7be JK |
453 | if (!ld) { |
454 | /* fatal error, do not requeue */ | |
455 | ret = 0; | |
456 | kfree_skb(skb); | |
457 | goto deref_tty; | |
458 | } | |
fb4b4881 | 459 | |
a352def2 | 460 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
461 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
462 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
463 | #endif | |
a11ef7be JK |
464 | /* fatal error, do not requeue */ |
465 | goto free_skb; | |
1da177e4 LT |
466 | } |
467 | if (mp->ttyinstop) { | |
468 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
469 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
470 | #endif | |
a11ef7be | 471 | goto deref_ldisc; |
1da177e4 | 472 | } |
a11ef7be | 473 | |
fb4b4881 | 474 | if (tty->receive_room < datalen) { |
1da177e4 LT |
475 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
476 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
477 | #endif | |
a11ef7be | 478 | goto deref_ldisc; |
1da177e4 | 479 | } |
a11ef7be JK |
480 | |
481 | nskb = gen_data_b3_resp_for(mp, skb); | |
482 | if (!nskb) { | |
1da177e4 | 483 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
a11ef7be | 484 | goto deref_ldisc; |
1da177e4 | 485 | } |
a11ef7be JK |
486 | |
487 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); | |
488 | ||
1da177e4 | 489 | errcode = capi20_put_message(mp->ap, nskb); |
a11ef7be JK |
490 | |
491 | if (errcode == CAPI_NOERROR) { | |
492 | skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
493 | #ifdef _DEBUG_DATAFLOW | |
494 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
495 | datahandle, skb->len); | |
496 | #endif | |
497 | ld->ops->receive_buf(tty, skb->data, NULL, skb->len); | |
498 | } else { | |
1da177e4 LT |
499 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", |
500 | errcode); | |
501 | kfree_skb(nskb); | |
a11ef7be JK |
502 | |
503 | if (errcode == CAPI_SENDQUEUEFULL) | |
504 | goto deref_ldisc; | |
1da177e4 | 505 | } |
a11ef7be JK |
506 | |
507 | free_skb: | |
fb4b4881 | 508 | ret = 0; |
a11ef7be JK |
509 | kfree_skb(skb); |
510 | ||
511 | deref_ldisc: | |
1da177e4 | 512 | tty_ldisc_deref(ld); |
a11ef7be JK |
513 | |
514 | deref_tty: | |
fb4b4881 JK |
515 | tty_kref_put(tty); |
516 | return ret; | |
1da177e4 LT |
517 | } |
518 | ||
519 | static void handle_minor_recv(struct capiminor *mp) | |
520 | { | |
521 | struct sk_buff *skb; | |
68d7347b JK |
522 | |
523 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) | |
1da177e4 LT |
524 | if (handle_recv_skb(mp, skb) < 0) { |
525 | skb_queue_head(&mp->inqueue, skb); | |
1da177e4 LT |
526 | return; |
527 | } | |
1da177e4 LT |
528 | } |
529 | ||
530 | static int handle_minor_send(struct capiminor *mp) | |
531 | { | |
fb4b4881 | 532 | struct tty_struct *tty; |
1da177e4 LT |
533 | struct sk_buff *skb; |
534 | u16 len; | |
535 | int count = 0; | |
536 | u16 errcode; | |
537 | u16 datahandle; | |
538 | ||
fb4b4881 JK |
539 | tty = tty_port_tty_get(&mp->port); |
540 | if (!tty) | |
541 | return 0; | |
542 | ||
543 | if (mp->ttyoutstop) { | |
1da177e4 LT |
544 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
545 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
546 | #endif | |
fb4b4881 | 547 | tty_kref_put(tty); |
1da177e4 LT |
548 | return 0; |
549 | } | |
550 | ||
2f9e9b6d | 551 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
42792713 | 552 | datahandle = atomic_inc_return(&mp->datahandle); |
1da177e4 LT |
553 | len = (u16)skb->len; |
554 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
555 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
556 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
557 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
558 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
559 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
42792713 | 560 | capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid)); |
1da177e4 | 561 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ |
5e6c20a9 | 562 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
563 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
564 | capimsg_setu16(skb->data, 18, datahandle); | |
565 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
566 | ||
501c87a9 | 567 | if (capiminor_add_ack(mp, datahandle) < 0) { |
1da177e4 LT |
568 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
569 | skb_queue_head(&mp->outqueue, skb); | |
fb4b4881 | 570 | tty_kref_put(tty); |
1da177e4 LT |
571 | return count; |
572 | } | |
573 | errcode = capi20_put_message(mp->ap, skb); | |
574 | if (errcode == CAPI_NOERROR) { | |
1da177e4 LT |
575 | count++; |
576 | mp->outbytes -= len; | |
577 | #ifdef _DEBUG_DATAFLOW | |
578 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
579 | datahandle, len); | |
580 | #endif | |
581 | continue; | |
582 | } | |
583 | capiminor_del_ack(mp, datahandle); | |
584 | ||
585 | if (errcode == CAPI_SENDQUEUEFULL) { | |
586 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
587 | skb_queue_head(&mp->outqueue, skb); | |
588 | break; | |
589 | } | |
590 | ||
591 | /* ups, drop packet */ | |
592 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
593 | mp->outbytes -= len; | |
594 | kfree_skb(skb); | |
595 | } | |
fb4b4881 | 596 | tty_kref_put(tty); |
1da177e4 LT |
597 | return count; |
598 | } | |
599 | ||
600 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
601 | /* -------- function called by lower level -------------------------- */ | |
602 | ||
603 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
604 | { | |
605 | struct capidev *cdev = ap->private; | |
606 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
fb4b4881 | 607 | struct tty_struct *tty; |
1da177e4 LT |
608 | struct capiminor *mp; |
609 | u16 datahandle; | |
610 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
611 | struct capincci *np; | |
053b47ff | 612 | unsigned long flags; |
1da177e4 | 613 | |
05b41494 JK |
614 | mutex_lock(&cdev->lock); |
615 | ||
1da177e4 LT |
616 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
617 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
05b41494 | 618 | if ((info & 0xff00) == 0) |
1da177e4 | 619 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
1da177e4 | 620 | } |
05b41494 | 621 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
1da177e4 | 622 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 623 | |
053b47ff | 624 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
625 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
626 | skb_queue_tail(&cdev->recvqueue, skb); | |
627 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 628 | goto unlock_out; |
1da177e4 | 629 | } |
05b41494 JK |
630 | |
631 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); | |
1da177e4 LT |
632 | if (!np) { |
633 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
634 | skb_queue_tail(&cdev->recvqueue, skb); | |
635 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 636 | goto unlock_out; |
1da177e4 | 637 | } |
501c87a9 | 638 | |
1da177e4 LT |
639 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
640 | skb_queue_tail(&cdev->recvqueue, skb); | |
641 | wake_up_interruptible(&cdev->recvwait); | |
501c87a9 | 642 | |
1da177e4 | 643 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
501c87a9 | 644 | |
1da177e4 LT |
645 | mp = np->minorp; |
646 | if (!mp) { | |
647 | skb_queue_tail(&cdev->recvqueue, skb); | |
648 | wake_up_interruptible(&cdev->recvwait); | |
05b41494 | 649 | goto unlock_out; |
1da177e4 | 650 | } |
1da177e4 | 651 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
1da177e4 LT |
652 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); |
653 | #ifdef _DEBUG_DATAFLOW | |
654 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
655 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
656 | #endif | |
657 | skb_queue_tail(&mp->inqueue, skb); | |
68d7347b | 658 | |
1da177e4 LT |
659 | handle_minor_recv(mp); |
660 | ||
661 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
662 | ||
663 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
664 | #ifdef _DEBUG_DATAFLOW | |
665 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
666 | datahandle, | |
667 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
668 | #endif | |
669 | kfree_skb(skb); | |
670 | (void)capiminor_del_ack(mp, datahandle); | |
fb4b4881 JK |
671 | tty = tty_port_tty_get(&mp->port); |
672 | if (tty) { | |
673 | tty_wakeup(tty); | |
674 | tty_kref_put(tty); | |
675 | } | |
1da177e4 LT |
676 | (void)handle_minor_send(mp); |
677 | ||
678 | } else { | |
679 | /* ups, let capi application handle it :-) */ | |
680 | skb_queue_tail(&cdev->recvqueue, skb); | |
681 | wake_up_interruptible(&cdev->recvwait); | |
682 | } | |
683 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
501c87a9 | 684 | |
05b41494 | 685 | unlock_out: |
053b47ff | 686 | spin_unlock_irqrestore(&workaround_lock, flags); |
05b41494 | 687 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
688 | } |
689 | ||
690 | /* -------- file_operations for capidev ----------------------------- */ | |
691 | ||
692 | static ssize_t | |
693 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
694 | { | |
695 | struct capidev *cdev = (struct capidev *)file->private_data; | |
696 | struct sk_buff *skb; | |
697 | size_t copied; | |
28a1dbb6 | 698 | int err; |
1da177e4 LT |
699 | |
700 | if (!cdev->ap.applid) | |
701 | return -ENODEV; | |
702 | ||
28a1dbb6 JK |
703 | skb = skb_dequeue(&cdev->recvqueue); |
704 | if (!skb) { | |
1da177e4 LT |
705 | if (file->f_flags & O_NONBLOCK) |
706 | return -EAGAIN; | |
28a1dbb6 JK |
707 | err = wait_event_interruptible(cdev->recvwait, |
708 | (skb = skb_dequeue(&cdev->recvqueue))); | |
709 | if (err) | |
710 | return err; | |
1da177e4 LT |
711 | } |
712 | if (skb->len > count) { | |
713 | skb_queue_head(&cdev->recvqueue, skb); | |
714 | return -EMSGSIZE; | |
715 | } | |
716 | if (copy_to_user(buf, skb->data, skb->len)) { | |
717 | skb_queue_head(&cdev->recvqueue, skb); | |
718 | return -EFAULT; | |
719 | } | |
720 | copied = skb->len; | |
721 | ||
722 | kfree_skb(skb); | |
723 | ||
724 | return copied; | |
725 | } | |
726 | ||
727 | static ssize_t | |
728 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
729 | { | |
730 | struct capidev *cdev = (struct capidev *)file->private_data; | |
731 | struct sk_buff *skb; | |
732 | u16 mlen; | |
733 | ||
734 | if (!cdev->ap.applid) | |
735 | return -ENODEV; | |
736 | ||
737 | skb = alloc_skb(count, GFP_USER); | |
738 | if (!skb) | |
739 | return -ENOMEM; | |
740 | ||
741 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
742 | kfree_skb(skb); | |
743 | return -EFAULT; | |
744 | } | |
745 | mlen = CAPIMSG_LEN(skb->data); | |
746 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
747 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
748 | kfree_skb(skb); | |
749 | return -EINVAL; | |
750 | } | |
751 | } else { | |
752 | if (mlen != count) { | |
753 | kfree_skb(skb); | |
754 | return -EINVAL; | |
755 | } | |
756 | } | |
757 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
758 | ||
759 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
05b41494 | 760 | mutex_lock(&cdev->lock); |
1da177e4 | 761 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
05b41494 | 762 | mutex_unlock(&cdev->lock); |
1da177e4 LT |
763 | } |
764 | ||
765 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
766 | ||
767 | if (cdev->errcode) { | |
768 | kfree_skb(skb); | |
769 | return -EIO; | |
770 | } | |
771 | return count; | |
772 | } | |
773 | ||
774 | static unsigned int | |
775 | capi_poll(struct file *file, poll_table * wait) | |
776 | { | |
777 | struct capidev *cdev = (struct capidev *)file->private_data; | |
778 | unsigned int mask = 0; | |
779 | ||
780 | if (!cdev->ap.applid) | |
781 | return POLLERR; | |
782 | ||
783 | poll_wait(file, &(cdev->recvwait), wait); | |
784 | mask = POLLOUT | POLLWRNORM; | |
785 | if (!skb_queue_empty(&cdev->recvqueue)) | |
786 | mask |= POLLIN | POLLRDNORM; | |
787 | return mask; | |
788 | } | |
789 | ||
790 | static int | |
791 | capi_ioctl(struct inode *inode, struct file *file, | |
792 | unsigned int cmd, unsigned long arg) | |
793 | { | |
794 | struct capidev *cdev = file->private_data; | |
1da177e4 LT |
795 | capi_ioctl_struct data; |
796 | int retval = -EINVAL; | |
797 | void __user *argp = (void __user *)arg; | |
798 | ||
799 | switch (cmd) { | |
800 | case CAPI_REGISTER: | |
05b41494 | 801 | mutex_lock(&cdev->lock); |
1da177e4 | 802 | |
05b41494 JK |
803 | if (cdev->ap.applid) { |
804 | retval = -EEXIST; | |
805 | goto register_out; | |
806 | } | |
807 | if (copy_from_user(&cdev->ap.rparam, argp, | |
808 | sizeof(struct capi_register_params))) { | |
809 | retval = -EFAULT; | |
810 | goto register_out; | |
811 | } | |
812 | cdev->ap.private = cdev; | |
813 | cdev->ap.recv_message = capi_recv_message; | |
814 | cdev->errcode = capi20_register(&cdev->ap); | |
815 | retval = (int)cdev->ap.applid; | |
816 | if (cdev->errcode) { | |
817 | cdev->ap.applid = 0; | |
818 | retval = -EIO; | |
1da177e4 | 819 | } |
05b41494 JK |
820 | |
821 | register_out: | |
822 | mutex_unlock(&cdev->lock); | |
823 | return retval; | |
1da177e4 LT |
824 | |
825 | case CAPI_GET_VERSION: | |
826 | { | |
827 | if (copy_from_user(&data.contr, argp, | |
828 | sizeof(data.contr))) | |
829 | return -EFAULT; | |
830 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
831 | if (cdev->errcode) | |
832 | return -EIO; | |
833 | if (copy_to_user(argp, &data.version, | |
834 | sizeof(data.version))) | |
835 | return -EFAULT; | |
836 | } | |
837 | return 0; | |
838 | ||
839 | case CAPI_GET_SERIAL: | |
840 | { | |
841 | if (copy_from_user(&data.contr, argp, | |
842 | sizeof(data.contr))) | |
843 | return -EFAULT; | |
844 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
845 | if (cdev->errcode) | |
846 | return -EIO; | |
847 | if (copy_to_user(argp, data.serial, | |
848 | sizeof(data.serial))) | |
849 | return -EFAULT; | |
850 | } | |
851 | return 0; | |
852 | case CAPI_GET_PROFILE: | |
853 | { | |
854 | if (copy_from_user(&data.contr, argp, | |
855 | sizeof(data.contr))) | |
856 | return -EFAULT; | |
857 | ||
858 | if (data.contr == 0) { | |
859 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
860 | if (cdev->errcode) | |
861 | return -EIO; | |
862 | ||
863 | retval = copy_to_user(argp, | |
864 | &data.profile.ncontroller, | |
865 | sizeof(data.profile.ncontroller)); | |
866 | ||
867 | } else { | |
868 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
869 | if (cdev->errcode) | |
870 | return -EIO; | |
871 | ||
872 | retval = copy_to_user(argp, &data.profile, | |
873 | sizeof(data.profile)); | |
874 | } | |
875 | if (retval) | |
876 | return -EFAULT; | |
877 | } | |
878 | return 0; | |
879 | ||
880 | case CAPI_GET_MANUFACTURER: | |
881 | { | |
882 | if (copy_from_user(&data.contr, argp, | |
883 | sizeof(data.contr))) | |
884 | return -EFAULT; | |
885 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
886 | if (cdev->errcode) | |
887 | return -EIO; | |
888 | ||
889 | if (copy_to_user(argp, data.manufacturer, | |
890 | sizeof(data.manufacturer))) | |
891 | return -EFAULT; | |
892 | ||
893 | } | |
894 | return 0; | |
895 | case CAPI_GET_ERRCODE: | |
896 | data.errcode = cdev->errcode; | |
897 | cdev->errcode = CAPI_NOERROR; | |
898 | if (arg) { | |
899 | if (copy_to_user(argp, &data.errcode, | |
900 | sizeof(data.errcode))) | |
901 | return -EFAULT; | |
902 | } | |
903 | return data.errcode; | |
904 | ||
905 | case CAPI_INSTALLED: | |
906 | if (capi20_isinstalled() == CAPI_NOERROR) | |
907 | return 0; | |
908 | return -ENXIO; | |
909 | ||
910 | case CAPI_MANUFACTURER_CMD: | |
911 | { | |
912 | struct capi_manufacturer_cmd mcmd; | |
913 | if (!capable(CAP_SYS_ADMIN)) | |
914 | return -EPERM; | |
915 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
916 | return -EFAULT; | |
917 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
918 | } | |
919 | return 0; | |
920 | ||
921 | case CAPI_SET_FLAGS: | |
05b41494 JK |
922 | case CAPI_CLR_FLAGS: { |
923 | unsigned userflags; | |
924 | ||
925 | if (copy_from_user(&userflags, argp, sizeof(userflags))) | |
926 | return -EFAULT; | |
1da177e4 | 927 | |
05b41494 JK |
928 | mutex_lock(&cdev->lock); |
929 | if (cmd == CAPI_SET_FLAGS) | |
930 | cdev->userflags |= userflags; | |
931 | else | |
932 | cdev->userflags &= ~userflags; | |
933 | mutex_unlock(&cdev->lock); | |
934 | return 0; | |
935 | } | |
1da177e4 LT |
936 | case CAPI_GET_FLAGS: |
937 | if (copy_to_user(argp, &cdev->userflags, | |
938 | sizeof(cdev->userflags))) | |
939 | return -EFAULT; | |
940 | return 0; | |
941 | ||
05b41494 JK |
942 | case CAPI_NCCI_OPENCOUNT: { |
943 | struct capincci *nccip; | |
944 | unsigned ncci; | |
945 | int count = 0; | |
1da177e4 | 946 | |
05b41494 JK |
947 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
948 | return -EFAULT; | |
949 | ||
950 | mutex_lock(&cdev->lock); | |
951 | nccip = capincci_find(cdev, (u32)ncci); | |
952 | if (nccip) | |
953 | count = capincci_minor_opencount(nccip); | |
954 | mutex_unlock(&cdev->lock); | |
955 | return count; | |
956 | } | |
1da177e4 LT |
957 | |
958 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
05b41494 JK |
959 | case CAPI_NCCI_GETUNIT: { |
960 | struct capincci *nccip; | |
961 | struct capiminor *mp; | |
962 | unsigned ncci; | |
963 | int unit = -ESRCH; | |
964 | ||
965 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
966 | return -EFAULT; | |
967 | ||
968 | mutex_lock(&cdev->lock); | |
969 | nccip = capincci_find(cdev, (u32)ncci); | |
970 | if (nccip) { | |
971 | mp = nccip->minorp; | |
972 | if (mp) | |
973 | unit = mp->minor; | |
1da177e4 | 974 | } |
05b41494 JK |
975 | mutex_unlock(&cdev->lock); |
976 | return unit; | |
977 | } | |
1da177e4 | 978 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
05b41494 JK |
979 | |
980 | default: | |
981 | return -EINVAL; | |
1da177e4 | 982 | } |
1da177e4 LT |
983 | } |
984 | ||
eca39dd8 | 985 | static int capi_open(struct inode *inode, struct file *file) |
1da177e4 | 986 | { |
eca39dd8 JK |
987 | struct capidev *cdev; |
988 | ||
989 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); | |
990 | if (!cdev) | |
991 | return -ENOMEM; | |
992 | ||
05b41494 | 993 | mutex_init(&cdev->lock); |
eca39dd8 JK |
994 | skb_queue_head_init(&cdev->recvqueue); |
995 | init_waitqueue_head(&cdev->recvwait); | |
884f5c44 | 996 | INIT_LIST_HEAD(&cdev->nccis); |
eca39dd8 JK |
997 | file->private_data = cdev; |
998 | ||
999 | mutex_lock(&capidev_list_lock); | |
1000 | list_add_tail(&cdev->list, &capidev_list); | |
1001 | mutex_unlock(&capidev_list_lock); | |
1002 | ||
1003 | return nonseekable_open(inode, file); | |
1da177e4 LT |
1004 | } |
1005 | ||
eca39dd8 | 1006 | static int capi_release(struct inode *inode, struct file *file) |
1da177e4 | 1007 | { |
eca39dd8 | 1008 | struct capidev *cdev = file->private_data; |
1da177e4 | 1009 | |
eca39dd8 JK |
1010 | mutex_lock(&capidev_list_lock); |
1011 | list_del(&cdev->list); | |
1012 | mutex_unlock(&capidev_list_lock); | |
1013 | ||
05b41494 | 1014 | if (cdev->ap.applid) |
eca39dd8 | 1015 | capi20_release(&cdev->ap); |
eca39dd8 | 1016 | skb_queue_purge(&cdev->recvqueue); |
eca39dd8 | 1017 | capincci_free(cdev, 0xffffffff); |
eca39dd8 JK |
1018 | |
1019 | kfree(cdev); | |
1da177e4 LT |
1020 | return 0; |
1021 | } | |
1022 | ||
2b8693c0 | 1023 | static const struct file_operations capi_fops = |
1da177e4 LT |
1024 | { |
1025 | .owner = THIS_MODULE, | |
1026 | .llseek = no_llseek, | |
1027 | .read = capi_read, | |
1028 | .write = capi_write, | |
1029 | .poll = capi_poll, | |
1030 | .ioctl = capi_ioctl, | |
1031 | .open = capi_open, | |
1032 | .release = capi_release, | |
1033 | }; | |
1034 | ||
1035 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1036 | /* -------- tty_operations for capincci ----------------------------- */ | |
1037 | ||
46324511 JK |
1038 | static int |
1039 | capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) | |
1da177e4 | 1040 | { |
46324511 JK |
1041 | int idx = tty->index; |
1042 | struct capiminor *mp = capiminor_get(idx); | |
1043 | int ret = tty_init_termios(tty); | |
1044 | ||
1045 | if (ret == 0) { | |
1046 | tty_driver_kref_get(driver); | |
1047 | tty->count++; | |
1048 | tty->driver_data = mp; | |
1049 | driver->ttys[idx] = tty; | |
1050 | } else | |
1051 | capiminor_put(mp); | |
1052 | return ret; | |
1053 | } | |
1da177e4 | 1054 | |
46324511 JK |
1055 | static void capinc_tty_cleanup(struct tty_struct *tty) |
1056 | { | |
1057 | struct capiminor *mp = tty->driver_data; | |
1058 | tty->driver_data = NULL; | |
1059 | capiminor_put(mp); | |
1060 | } | |
1da177e4 | 1061 | |
fb4b4881 | 1062 | static int capinc_tty_open(struct tty_struct *tty, struct file *filp) |
46324511 JK |
1063 | { |
1064 | struct capiminor *mp = tty->driver_data; | |
1065 | unsigned long flags; | |
fb4b4881 JK |
1066 | int err; |
1067 | ||
1068 | err = tty_port_open(&mp->port, tty, filp); | |
1069 | if (err) | |
1070 | return err; | |
1da177e4 | 1071 | |
053b47ff | 1072 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 | 1073 | handle_minor_recv(mp); |
053b47ff | 1074 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1075 | return 0; |
1076 | } | |
1077 | ||
fb4b4881 | 1078 | static void capinc_tty_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1079 | { |
46324511 | 1080 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1081 | |
fb4b4881 | 1082 | tty_port_close(&mp->port, tty, filp); |
1da177e4 LT |
1083 | } |
1084 | ||
6576c289 | 1085 | static int capinc_tty_write(struct tty_struct *tty, |
1da177e4 LT |
1086 | const unsigned char *buf, int count) |
1087 | { | |
2c8df722 | 1088 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1089 | struct sk_buff *skb; |
053b47ff | 1090 | unsigned long flags; |
1da177e4 LT |
1091 | |
1092 | #ifdef _DEBUG_TTYFUNCS | |
1093 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1094 | #endif | |
1095 | ||
053b47ff | 1096 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1097 | skb = mp->ttyskb; |
1098 | if (skb) { | |
1099 | mp->ttyskb = NULL; | |
1100 | skb_queue_tail(&mp->outqueue, skb); | |
1101 | mp->outbytes += skb->len; | |
1102 | } | |
1103 | ||
1104 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1105 | if (!skb) { | |
1106 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1107 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1108 | return -ENOMEM; |
1109 | } | |
1110 | ||
1111 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1112 | memcpy(skb_put(skb, count), buf, count); | |
1113 | ||
1114 | skb_queue_tail(&mp->outqueue, skb); | |
1115 | mp->outbytes += skb->len; | |
1116 | (void)handle_minor_send(mp); | |
053b47ff | 1117 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1118 | return count; |
1119 | } | |
1120 | ||
f2545a75 | 1121 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1122 | { |
2c8df722 | 1123 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1124 | struct sk_buff *skb; |
053b47ff | 1125 | unsigned long flags; |
f2545a75 | 1126 | int ret = 1; |
1da177e4 LT |
1127 | |
1128 | #ifdef _DEBUG_TTYFUNCS | |
1129 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1130 | #endif | |
1131 | ||
053b47ff | 1132 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1133 | skb = mp->ttyskb; |
1134 | if (skb) { | |
1135 | if (skb_tailroom(skb) > 0) { | |
1136 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1137 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1138 | return 1; |
1da177e4 LT |
1139 | } |
1140 | mp->ttyskb = NULL; | |
1141 | skb_queue_tail(&mp->outqueue, skb); | |
1142 | mp->outbytes += skb->len; | |
1143 | (void)handle_minor_send(mp); | |
1144 | } | |
1145 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1146 | if (skb) { | |
1147 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1148 | *(skb_put(skb, 1)) = ch; | |
1149 | mp->ttyskb = skb; | |
1150 | } else { | |
1151 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1152 | ret = 0; |
1da177e4 | 1153 | } |
053b47ff | 1154 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1155 | return ret; |
1da177e4 LT |
1156 | } |
1157 | ||
1158 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1159 | { | |
2c8df722 | 1160 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1161 | struct sk_buff *skb; |
053b47ff | 1162 | unsigned long flags; |
1da177e4 LT |
1163 | |
1164 | #ifdef _DEBUG_TTYFUNCS | |
1165 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1166 | #endif | |
1167 | ||
053b47ff | 1168 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1169 | skb = mp->ttyskb; |
1170 | if (skb) { | |
1171 | mp->ttyskb = NULL; | |
1172 | skb_queue_tail(&mp->outqueue, skb); | |
1173 | mp->outbytes += skb->len; | |
1174 | (void)handle_minor_send(mp); | |
1175 | } | |
1176 | (void)handle_minor_recv(mp); | |
053b47ff | 1177 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1178 | } |
1179 | ||
1180 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1181 | { | |
2c8df722 | 1182 | struct capiminor *mp = tty->driver_data; |
1da177e4 | 1183 | int room; |
2c8df722 | 1184 | |
1da177e4 LT |
1185 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); |
1186 | room *= CAPI_MAX_BLKSIZE; | |
1187 | #ifdef _DEBUG_TTYFUNCS | |
1188 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1189 | #endif | |
1190 | return room; | |
1191 | } | |
1192 | ||
408b664a | 1193 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1194 | { |
2c8df722 JK |
1195 | struct capiminor *mp = tty->driver_data; |
1196 | ||
1da177e4 LT |
1197 | #ifdef _DEBUG_TTYFUNCS |
1198 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1199 | mp->outbytes, mp->nack, | |
1200 | skb_queue_len(&mp->outqueue), | |
1201 | skb_queue_len(&mp->inqueue)); | |
1202 | #endif | |
1203 | return mp->outbytes; | |
1204 | } | |
1205 | ||
1206 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1207 | unsigned int cmd, unsigned long arg) | |
1208 | { | |
1209 | int error = 0; | |
1210 | switch (cmd) { | |
1211 | default: | |
53e86317 | 1212 | error = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
1213 | break; |
1214 | } | |
1215 | return error; | |
1216 | } | |
1217 | ||
606d099c | 1218 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1219 | { |
1220 | #ifdef _DEBUG_TTYFUNCS | |
1221 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1222 | #endif | |
1223 | } | |
1224 | ||
2c8df722 | 1225 | static void capinc_tty_throttle(struct tty_struct *tty) |
1da177e4 | 1226 | { |
2c8df722 | 1227 | struct capiminor *mp = tty->driver_data; |
1da177e4 LT |
1228 | #ifdef _DEBUG_TTYFUNCS |
1229 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1230 | #endif | |
2c8df722 | 1231 | mp->ttyinstop = 1; |
1da177e4 LT |
1232 | } |
1233 | ||
2c8df722 | 1234 | static void capinc_tty_unthrottle(struct tty_struct *tty) |
1da177e4 | 1235 | { |
2c8df722 | 1236 | struct capiminor *mp = tty->driver_data; |
053b47ff | 1237 | unsigned long flags; |
2c8df722 | 1238 | |
1da177e4 LT |
1239 | #ifdef _DEBUG_TTYFUNCS |
1240 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1241 | #endif | |
2c8df722 JK |
1242 | spin_lock_irqsave(&workaround_lock, flags); |
1243 | mp->ttyinstop = 0; | |
1244 | handle_minor_recv(mp); | |
1245 | spin_unlock_irqrestore(&workaround_lock, flags); | |
1da177e4 LT |
1246 | } |
1247 | ||
1248 | static void capinc_tty_stop(struct tty_struct *tty) | |
1249 | { | |
2c8df722 JK |
1250 | struct capiminor *mp = tty->driver_data; |
1251 | ||
1da177e4 LT |
1252 | #ifdef _DEBUG_TTYFUNCS |
1253 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1254 | #endif | |
2c8df722 | 1255 | mp->ttyoutstop = 1; |
1da177e4 LT |
1256 | } |
1257 | ||
1258 | static void capinc_tty_start(struct tty_struct *tty) | |
1259 | { | |
2c8df722 | 1260 | struct capiminor *mp = tty->driver_data; |
053b47ff | 1261 | unsigned long flags; |
2c8df722 | 1262 | |
1da177e4 LT |
1263 | #ifdef _DEBUG_TTYFUNCS |
1264 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1265 | #endif | |
2c8df722 JK |
1266 | spin_lock_irqsave(&workaround_lock, flags); |
1267 | mp->ttyoutstop = 0; | |
1268 | (void)handle_minor_send(mp); | |
1269 | spin_unlock_irqrestore(&workaround_lock, flags); | |
1da177e4 LT |
1270 | } |
1271 | ||
1272 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1273 | { | |
fb4b4881 JK |
1274 | struct capiminor *mp = tty->driver_data; |
1275 | ||
1da177e4 LT |
1276 | #ifdef _DEBUG_TTYFUNCS |
1277 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1278 | #endif | |
fb4b4881 | 1279 | tty_port_hangup(&mp->port); |
1da177e4 LT |
1280 | } |
1281 | ||
9e98966c | 1282 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1283 | { |
1284 | #ifdef _DEBUG_TTYFUNCS | |
1285 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1286 | #endif | |
9e98966c | 1287 | return 0; |
1da177e4 LT |
1288 | } |
1289 | ||
1290 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1291 | { | |
1292 | #ifdef _DEBUG_TTYFUNCS | |
1293 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1294 | #endif | |
1295 | } | |
1296 | ||
1297 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1298 | { | |
1299 | #ifdef _DEBUG_TTYFUNCS | |
1300 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1301 | #endif | |
1302 | } | |
1303 | ||
1304 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1305 | { | |
1306 | #ifdef _DEBUG_TTYFUNCS | |
1307 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1308 | #endif | |
1309 | } | |
1310 | ||
b68e31d0 | 1311 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1312 | .open = capinc_tty_open, |
1313 | .close = capinc_tty_close, | |
1314 | .write = capinc_tty_write, | |
1315 | .put_char = capinc_tty_put_char, | |
1316 | .flush_chars = capinc_tty_flush_chars, | |
1317 | .write_room = capinc_tty_write_room, | |
1318 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1319 | .ioctl = capinc_tty_ioctl, | |
1320 | .set_termios = capinc_tty_set_termios, | |
1321 | .throttle = capinc_tty_throttle, | |
1322 | .unthrottle = capinc_tty_unthrottle, | |
1323 | .stop = capinc_tty_stop, | |
1324 | .start = capinc_tty_start, | |
1325 | .hangup = capinc_tty_hangup, | |
1326 | .break_ctl = capinc_tty_break_ctl, | |
1327 | .flush_buffer = capinc_tty_flush_buffer, | |
1328 | .set_ldisc = capinc_tty_set_ldisc, | |
1329 | .send_xchar = capinc_tty_send_xchar, | |
46324511 JK |
1330 | .install = capinc_tty_install, |
1331 | .cleanup = capinc_tty_cleanup, | |
1da177e4 LT |
1332 | }; |
1333 | ||
e76b1544 | 1334 | static int __init capinc_tty_init(void) |
1da177e4 LT |
1335 | { |
1336 | struct tty_driver *drv; | |
e76b1544 JK |
1337 | int err; |
1338 | ||
1da177e4 LT |
1339 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
1340 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1341 | if (capi_ttyminors <= 0) | |
1342 | capi_ttyminors = CAPINC_NR_PORTS; | |
1343 | ||
81d17fe5 JK |
1344 | capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, |
1345 | GFP_KERNEL); | |
1346 | if (!capiminors) | |
1da177e4 LT |
1347 | return -ENOMEM; |
1348 | ||
81d17fe5 JK |
1349 | drv = alloc_tty_driver(capi_ttyminors); |
1350 | if (!drv) { | |
1351 | kfree(capiminors); | |
1352 | return -ENOMEM; | |
1353 | } | |
1da177e4 LT |
1354 | drv->owner = THIS_MODULE; |
1355 | drv->driver_name = "capi_nc"; | |
1da177e4 | 1356 | drv->name = "capi"; |
e95ac143 | 1357 | drv->major = 0; |
1da177e4 LT |
1358 | drv->minor_start = 0; |
1359 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1360 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1361 | drv->init_termios = tty_std_termios; | |
1362 | drv->init_termios.c_iflag = ICRNL; | |
1363 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1364 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1365 | drv->init_termios.c_lflag = 0; | |
40fb2d0d JK |
1366 | drv->flags = |
1367 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | | |
1368 | TTY_DRIVER_DYNAMIC_DEV; | |
1da177e4 | 1369 | tty_set_operations(drv, &capinc_ops); |
e76b1544 JK |
1370 | |
1371 | err = tty_register_driver(drv); | |
1372 | if (err) { | |
1da177e4 | 1373 | put_tty_driver(drv); |
81d17fe5 | 1374 | kfree(capiminors); |
1da177e4 | 1375 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
e76b1544 | 1376 | return err; |
1da177e4 LT |
1377 | } |
1378 | capinc_tty_driver = drv; | |
1379 | return 0; | |
1380 | } | |
1381 | ||
e76b1544 | 1382 | static void __exit capinc_tty_exit(void) |
1da177e4 | 1383 | { |
e76b1544 JK |
1384 | tty_unregister_driver(capinc_tty_driver); |
1385 | put_tty_driver(capinc_tty_driver); | |
81d17fe5 | 1386 | kfree(capiminors); |
1da177e4 LT |
1387 | } |
1388 | ||
501c87a9 JK |
1389 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
1390 | ||
1391 | static inline int capinc_tty_init(void) | |
1392 | { | |
1393 | return 0; | |
1394 | } | |
1395 | ||
1396 | static inline void capinc_tty_exit(void) { } | |
1397 | ||
1398 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1da177e4 LT |
1399 | |
1400 | /* -------- /proc functions ----------------------------------------- */ | |
1401 | ||
1402 | /* | |
1403 | * /proc/capi/capi20: | |
1404 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1405 | */ | |
9a58a80a | 1406 | static int capi20_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1407 | { |
1408 | struct capidev *cdev; | |
1409 | struct list_head *l; | |
1da177e4 | 1410 | |
b8f433dc | 1411 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1412 | list_for_each(l, &capidev_list) { |
1413 | cdev = list_entry(l, struct capidev, list); | |
9a58a80a | 1414 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
1da177e4 LT |
1415 | cdev->ap.applid, |
1416 | cdev->ap.nrecvctlpkt, | |
1417 | cdev->ap.nrecvdatapkt, | |
1418 | cdev->ap.nsentctlpkt, | |
1419 | cdev->ap.nsentdatapkt); | |
1da177e4 | 1420 | } |
b8f433dc | 1421 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1422 | return 0; |
1da177e4 LT |
1423 | } |
1424 | ||
9a58a80a AD |
1425 | static int capi20_proc_open(struct inode *inode, struct file *file) |
1426 | { | |
1427 | return single_open(file, capi20_proc_show, NULL); | |
1428 | } | |
1429 | ||
1430 | static const struct file_operations capi20_proc_fops = { | |
1431 | .owner = THIS_MODULE, | |
1432 | .open = capi20_proc_open, | |
1433 | .read = seq_read, | |
1434 | .llseek = seq_lseek, | |
1435 | .release = single_release, | |
1436 | }; | |
1437 | ||
1da177e4 LT |
1438 | /* |
1439 | * /proc/capi/capi20ncci: | |
1440 | * applid ncci | |
1441 | */ | |
9a58a80a | 1442 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1443 | { |
884f5c44 JK |
1444 | struct capidev *cdev; |
1445 | struct capincci *np; | |
1da177e4 | 1446 | |
b8f433dc | 1447 | mutex_lock(&capidev_list_lock); |
884f5c44 | 1448 | list_for_each_entry(cdev, &capidev_list, list) { |
05b41494 | 1449 | mutex_lock(&cdev->lock); |
884f5c44 JK |
1450 | list_for_each_entry(np, &cdev->nccis, list) |
1451 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); | |
05b41494 | 1452 | mutex_unlock(&cdev->lock); |
1da177e4 | 1453 | } |
b8f433dc | 1454 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1455 | return 0; |
1da177e4 LT |
1456 | } |
1457 | ||
9a58a80a AD |
1458 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
1459 | { | |
1460 | return single_open(file, capi20ncci_proc_show, NULL); | |
1461 | } | |
1462 | ||
1463 | static const struct file_operations capi20ncci_proc_fops = { | |
1464 | .owner = THIS_MODULE, | |
1465 | .open = capi20ncci_proc_open, | |
1466 | .read = seq_read, | |
1467 | .llseek = seq_lseek, | |
1468 | .release = single_release, | |
1da177e4 LT |
1469 | }; |
1470 | ||
1471 | static void __init proc_init(void) | |
1472 | { | |
9a58a80a AD |
1473 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
1474 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); | |
1da177e4 LT |
1475 | } |
1476 | ||
1477 | static void __exit proc_exit(void) | |
1478 | { | |
9a58a80a AD |
1479 | remove_proc_entry("capi/capi20", NULL); |
1480 | remove_proc_entry("capi/capi20ncci", NULL); | |
1da177e4 LT |
1481 | } |
1482 | ||
1483 | /* -------- init function and module interface ---------------------- */ | |
1484 | ||
1485 | ||
1da177e4 LT |
1486 | static int __init capi_init(void) |
1487 | { | |
88549d6b | 1488 | const char *compileinfo; |
6d9eac34 | 1489 | int major_ret; |
1da177e4 | 1490 | |
6d9eac34 AM |
1491 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1492 | if (major_ret < 0) { | |
1da177e4 | 1493 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1494 | return major_ret; |
1da177e4 | 1495 | } |
56b22935 | 1496 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1497 | if (IS_ERR(capi_class)) { |
1498 | unregister_chrdev(capi_major, "capi20"); | |
1499 | return PTR_ERR(capi_class); | |
1500 | } | |
1501 | ||
a9b12619 | 1502 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
1da177e4 | 1503 | |
1da177e4 | 1504 | if (capinc_tty_init() < 0) { |
d78b0368 | 1505 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1506 | class_destroy(capi_class); |
1da177e4 LT |
1507 | unregister_chrdev(capi_major, "capi20"); |
1508 | return -ENOMEM; | |
1509 | } | |
1da177e4 LT |
1510 | |
1511 | proc_init(); | |
1512 | ||
1da177e4 LT |
1513 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
1514 | compileinfo = " (middleware+capifs)"; | |
501c87a9 | 1515 | #elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE) |
1da177e4 | 1516 | compileinfo = " (no capifs)"; |
1da177e4 LT |
1517 | #else |
1518 | compileinfo = " (no middleware)"; | |
1519 | #endif | |
88549d6b JK |
1520 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
1521 | capi_major, compileinfo); | |
1da177e4 LT |
1522 | |
1523 | return 0; | |
1524 | } | |
1525 | ||
1526 | static void __exit capi_exit(void) | |
1527 | { | |
1528 | proc_exit(); | |
1529 | ||
d78b0368 | 1530 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1531 | class_destroy(capi_class); |
1da177e4 | 1532 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 | 1533 | |
1da177e4 | 1534 | capinc_tty_exit(); |
1da177e4 LT |
1535 | } |
1536 | ||
1537 | module_init(capi_init); | |
1538 | module_exit(capi_exit); |