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-rw-r--r--drivers/isdn/gigaset/common.c1203
-rw-r--r--drivers/isdn/gigaset/gigaset.h938
2 files changed, 2141 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
new file mode 100644
index 000000000000..64371995c1a9
--- /dev/null
+++ b/drivers/isdn/gigaset/common.c
@@ -0,0 +1,1203 @@
1/*
2 * Stuff used by all variants of the driver
3 *
4 * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>,
5 * Hansjoerg Lipp <hjlipp@web.de>,
6 * Tilman Schmidt <tilman@imap.cc>.
7 *
8 * =====================================================================
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 * =====================================================================
14 * ToDo: ...
15 * =====================================================================
16 * Version: $Id: common.c,v 1.104.4.22 2006/02/04 18:28:16 hjlipp Exp $
17 * =====================================================================
18 */
19
20#include "gigaset.h"
21#include <linux/ctype.h>
22#include <linux/module.h>
23#include <linux/moduleparam.h>
24
25/* Version Information */
26#define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Tilman Schmidt <tilman@imap.cc>, Stefan Eilers <Eilers.Stefan@epost.de>"
27#define DRIVER_DESC "Driver for Gigaset 307x"
28
29/* Module parameters */
30int gigaset_debuglevel = DEBUG_DEFAULT;
31EXPORT_SYMBOL_GPL(gigaset_debuglevel);
32module_param_named(debug, gigaset_debuglevel, int, S_IRUGO|S_IWUSR);
33MODULE_PARM_DESC(debug, "debug level");
34
35/*======================================================================
36 Prototypes of internal functions
37 */
38
39//static void gigaset_process_response(int resp_code, int parameter,
40// struct at_state_t *at_state,
41// unsigned char ** pstring);
42static struct cardstate *alloc_cs(struct gigaset_driver *drv);
43static void free_cs(struct cardstate *cs);
44static void make_valid(struct cardstate *cs, unsigned mask);
45static void make_invalid(struct cardstate *cs, unsigned mask);
46
47#define VALID_MINOR 0x01
48#define VALID_ID 0x02
49#define ASSIGNED 0x04
50
51/* bitwise byte inversion table */
52__u8 gigaset_invtab[256] = {
53 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
54 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
55 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
56 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
57 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
58 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
59 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
60 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
61 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
62 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
63 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
64 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
65 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
66 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
67 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
68 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
69 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
70 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
71 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
72 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
73 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
74 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
75 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
76 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
77 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
78 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
79 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
80 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
81 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
82 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
83 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
84 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
85};
86EXPORT_SYMBOL_GPL(gigaset_invtab);
87
88void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
89 size_t len, const unsigned char *buf, int from_user)
90{
91 unsigned char outbuf[80];
92 unsigned char inbuf[80 - 1];
93 size_t numin;
94 const unsigned char *in;
95 size_t space = sizeof outbuf - 1;
96 unsigned char *out = outbuf;
97
98 if (!from_user) {
99 in = buf;
100 numin = len;
101 } else {
102 numin = len < sizeof inbuf ? len : sizeof inbuf;
103 in = inbuf;
104 if (copy_from_user(inbuf, (const unsigned char __user *) buf, numin)) {
105 strncpy(inbuf, "<FAULT>", sizeof inbuf);
106 numin = sizeof "<FAULT>" - 1;
107 }
108 }
109
110 for (; numin && space; --numin, ++in) {
111 --space;
112 if (*in >= 32)
113 *out++ = *in;
114 else {
115 *out++ = '^';
116 if (space) {
117 *out++ = '@' + *in;
118 --space;
119 }
120 }
121 }
122 *out = 0;
123
124 dbg(level, "%s (%u bytes): %s", msg, (unsigned) len, outbuf);
125}
126EXPORT_SYMBOL_GPL(gigaset_dbg_buffer);
127
128static int setflags(struct cardstate *cs, unsigned flags, unsigned delay)
129{
130 int r;
131
132 r = cs->ops->set_modem_ctrl(cs, cs->control_state, flags);
133 cs->control_state = flags;
134 if (r < 0)
135 return r;
136
137 if (delay) {
138 set_current_state(TASK_INTERRUPTIBLE);
139 schedule_timeout(delay * HZ / 1000);
140 }
141
142 return 0;
143}
144
145int gigaset_enterconfigmode(struct cardstate *cs)
146{
147 int i, r;
148
149 if (!atomic_read(&cs->connected)) {
150 err("not connected!");
151 return -1;
152 }
153
154 cs->control_state = TIOCM_RTS; //FIXME
155
156 r = setflags(cs, TIOCM_DTR, 200);
157 if (r < 0)
158 goto error;
159 r = setflags(cs, 0, 200);
160 if (r < 0)
161 goto error;
162 for (i = 0; i < 5; ++i) {
163 r = setflags(cs, TIOCM_RTS, 100);
164 if (r < 0)
165 goto error;
166 r = setflags(cs, 0, 100);
167 if (r < 0)
168 goto error;
169 }
170 r = setflags(cs, TIOCM_RTS|TIOCM_DTR, 800);
171 if (r < 0)
172 goto error;
173
174 return 0;
175
176error:
177 err("error %d on setuartbits!\n", -r);
178 cs->control_state = TIOCM_RTS|TIOCM_DTR; // FIXME is this a good value?
179 cs->ops->set_modem_ctrl(cs, 0, TIOCM_RTS|TIOCM_DTR);
180
181 return -1; //r
182}
183
184static int test_timeout(struct at_state_t *at_state)
185{
186 if (!at_state->timer_expires)
187 return 0;
188
189 if (--at_state->timer_expires) {
190 dbg(DEBUG_MCMD, "decreased timer of %p to %lu",
191 at_state, at_state->timer_expires);
192 return 0;
193 }
194
195 if (!gigaset_add_event(at_state->cs, at_state, EV_TIMEOUT, NULL,
196 atomic_read(&at_state->timer_index), NULL)) {
197 //FIXME what should we do?
198 }
199
200 return 1;
201}
202
203static void timer_tick(unsigned long data)
204{
205 struct cardstate *cs = (struct cardstate *) data;
206 unsigned long flags;
207 unsigned channel;
208 struct at_state_t *at_state;
209 int timeout = 0;
210
211 spin_lock_irqsave(&cs->lock, flags);
212
213 for (channel = 0; channel < cs->channels; ++channel)
214 if (test_timeout(&cs->bcs[channel].at_state))
215 timeout = 1;
216
217 if (test_timeout(&cs->at_state))
218 timeout = 1;
219
220 list_for_each_entry(at_state, &cs->temp_at_states, list)
221 if (test_timeout(at_state))
222 timeout = 1;
223
224 if (atomic_read(&cs->running)) {
225 mod_timer(&cs->timer, jiffies + GIG_TICK);
226 if (timeout) {
227 dbg(DEBUG_CMD, "scheduling timeout");
228 tasklet_schedule(&cs->event_tasklet);
229 }
230 }
231
232 spin_unlock_irqrestore(&cs->lock, flags);
233}
234
235int gigaset_get_channel(struct bc_state *bcs)
236{
237 unsigned long flags;
238
239 spin_lock_irqsave(&bcs->cs->lock, flags);
240 if (bcs->use_count) {
241 dbg(DEBUG_ANY, "could not allocate channel %d", bcs->channel);
242 spin_unlock_irqrestore(&bcs->cs->lock, flags);
243 return 0;
244 }
245 ++bcs->use_count;
246 bcs->busy = 1;
247 dbg(DEBUG_ANY, "allocated channel %d", bcs->channel);
248 spin_unlock_irqrestore(&bcs->cs->lock, flags);
249 return 1;
250}
251
252void gigaset_free_channel(struct bc_state *bcs)
253{
254 unsigned long flags;
255
256 spin_lock_irqsave(&bcs->cs->lock, flags);
257 if (!bcs->busy) {
258 dbg(DEBUG_ANY, "could not free channel %d", bcs->channel);
259 spin_unlock_irqrestore(&bcs->cs->lock, flags);
260 return;
261 }
262 --bcs->use_count;
263 bcs->busy = 0;
264 dbg(DEBUG_ANY, "freed channel %d", bcs->channel);
265 spin_unlock_irqrestore(&bcs->cs->lock, flags);
266}
267
268int gigaset_get_channels(struct cardstate *cs)
269{
270 unsigned long flags;
271 int i;
272
273 spin_lock_irqsave(&cs->lock, flags);
274 for (i = 0; i < cs->channels; ++i)
275 if (cs->bcs[i].use_count) {
276 spin_unlock_irqrestore(&cs->lock, flags);
277 dbg(DEBUG_ANY, "could not allocated all channels");
278 return 0;
279 }
280 for (i = 0; i < cs->channels; ++i)
281 ++cs->bcs[i].use_count;
282 spin_unlock_irqrestore(&cs->lock, flags);
283
284 dbg(DEBUG_ANY, "allocated all channels");
285
286 return 1;
287}
288
289void gigaset_free_channels(struct cardstate *cs)
290{
291 unsigned long flags;
292 int i;
293
294 dbg(DEBUG_ANY, "unblocking all channels");
295 spin_lock_irqsave(&cs->lock, flags);
296 for (i = 0; i < cs->channels; ++i)
297 --cs->bcs[i].use_count;
298 spin_unlock_irqrestore(&cs->lock, flags);
299}
300
301void gigaset_block_channels(struct cardstate *cs)
302{
303 unsigned long flags;
304 int i;
305
306 dbg(DEBUG_ANY, "blocking all channels");
307 spin_lock_irqsave(&cs->lock, flags);
308 for (i = 0; i < cs->channels; ++i)
309 ++cs->bcs[i].use_count;
310 spin_unlock_irqrestore(&cs->lock, flags);
311}
312
313static void clear_events(struct cardstate *cs)
314{
315 struct event_t *ev;
316 unsigned head, tail;
317
318 /* no locking needed (no reader/writer allowed) */
319
320 head = atomic_read(&cs->ev_head);
321 tail = atomic_read(&cs->ev_tail);
322
323 while (tail != head) {
324 ev = cs->events + head;
325 kfree(ev->ptr);
326
327 head = (head + 1) % MAX_EVENTS;
328 }
329
330 atomic_set(&cs->ev_head, tail);
331}
332
333struct event_t *gigaset_add_event(struct cardstate *cs,
334 struct at_state_t *at_state, int type,
335 void *ptr, int parameter, void *arg)
336{
337 unsigned long flags;
338 unsigned next, tail;
339 struct event_t *event = NULL;
340
341 spin_lock_irqsave(&cs->ev_lock, flags);
342
343 tail = atomic_read(&cs->ev_tail);
344 next = (tail + 1) % MAX_EVENTS;
345 if (unlikely(next == atomic_read(&cs->ev_head)))
346 err("event queue full");
347 else {
348 event = cs->events + tail;
349 event->type = type;
350 event->at_state = at_state;
351 event->cid = -1;
352 event->ptr = ptr;
353 event->arg = arg;
354 event->parameter = parameter;
355 atomic_set(&cs->ev_tail, next);
356 }
357
358 spin_unlock_irqrestore(&cs->ev_lock, flags);
359
360 return event;
361}
362EXPORT_SYMBOL_GPL(gigaset_add_event);
363
364static void free_strings(struct at_state_t *at_state)
365{
366 int i;
367
368 for (i = 0; i < STR_NUM; ++i) {
369 kfree(at_state->str_var[i]);
370 at_state->str_var[i] = NULL;
371 }
372}
373
374static void clear_at_state(struct at_state_t *at_state)
375{
376 free_strings(at_state);
377}
378
379static void dealloc_at_states(struct cardstate *cs)
380{
381 struct at_state_t *cur, *next;
382
383 list_for_each_entry_safe(cur, next, &cs->temp_at_states, list) {
384 list_del(&cur->list);
385 free_strings(cur);
386 kfree(cur);
387 }
388}
389
390static void gigaset_freebcs(struct bc_state *bcs)
391{
392 int i;
393
394 dbg(DEBUG_INIT, "freeing bcs[%d]->hw", bcs->channel);
395 if (!bcs->cs->ops->freebcshw(bcs)) {
396 dbg(DEBUG_INIT, "failed");
397 }
398
399 dbg(DEBUG_INIT, "clearing bcs[%d]->at_state", bcs->channel);
400 clear_at_state(&bcs->at_state);
401 dbg(DEBUG_INIT, "freeing bcs[%d]->skb", bcs->channel);
402
403 if (bcs->skb)
404 dev_kfree_skb(bcs->skb);
405 for (i = 0; i < AT_NUM; ++i) {
406 kfree(bcs->commands[i]);
407 bcs->commands[i] = NULL;
408 }
409}
410
411void gigaset_freecs(struct cardstate *cs)
412{
413 int i;
414 unsigned long flags;
415
416 if (!cs)
417 return;
418
419 down(&cs->sem);
420
421 if (!cs->bcs)
422 goto f_cs;
423 if (!cs->inbuf)
424 goto f_bcs;
425
426 spin_lock_irqsave(&cs->lock, flags);
427 atomic_set(&cs->running, 0);
428 spin_unlock_irqrestore(&cs->lock, flags); /* event handler and timer are not rescheduled below */
429
430 tasklet_kill(&cs->event_tasklet);
431 del_timer_sync(&cs->timer);
432
433 switch (cs->cs_init) {
434 default:
435 gigaset_if_free(cs);
436
437 dbg(DEBUG_INIT, "clearing hw");
438 cs->ops->freecshw(cs);
439
440 //FIXME cmdbuf
441
442 /* fall through */
443 case 2: /* error in initcshw */
444 /* Deregister from LL */
445 make_invalid(cs, VALID_ID);
446 dbg(DEBUG_INIT, "clearing iif");
447 gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD);
448
449 /* fall through */
450 case 1: /* error when regestering to LL */
451 dbg(DEBUG_INIT, "clearing at_state");
452 clear_at_state(&cs->at_state);
453 dealloc_at_states(cs);
454
455 /* fall through */
456 case 0: /* error in one call to initbcs */
457 for (i = 0; i < cs->channels; ++i) {
458 dbg(DEBUG_INIT, "clearing bcs[%d]", i);
459 gigaset_freebcs(cs->bcs + i);
460 }
461
462 clear_events(cs);
463 dbg(DEBUG_INIT, "freeing inbuf");
464 kfree(cs->inbuf);
465 }
466f_bcs: dbg(DEBUG_INIT, "freeing bcs[]");
467 kfree(cs->bcs);
468f_cs: dbg(DEBUG_INIT, "freeing cs");
469 up(&cs->sem);
470 free_cs(cs);
471}
472EXPORT_SYMBOL_GPL(gigaset_freecs);
473
474void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
475 struct cardstate *cs, int cid)
476{
477 int i;
478
479 INIT_LIST_HEAD(&at_state->list);
480 at_state->waiting = 0;
481 at_state->getstring = 0;
482 at_state->pending_commands = 0;
483 at_state->timer_expires = 0;
484 at_state->timer_active = 0;
485 atomic_set(&at_state->timer_index, 0);
486 atomic_set(&at_state->seq_index, 0);
487 at_state->ConState = 0;
488 for (i = 0; i < STR_NUM; ++i)
489 at_state->str_var[i] = NULL;
490 at_state->int_var[VAR_ZDLE] = 0;
491 at_state->int_var[VAR_ZCTP] = -1;
492 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
493 at_state->cs = cs;
494 at_state->bcs = bcs;
495 at_state->cid = cid;
496 if (!cid)
497 at_state->replystruct = cs->tabnocid;
498 else
499 at_state->replystruct = cs->tabcid;
500}
501
502
503static void gigaset_inbuf_init(struct inbuf_t *inbuf, struct bc_state *bcs,
504 struct cardstate *cs, int inputstate)
505/* inbuf->read must be allocated before! */
506{
507 atomic_set(&inbuf->head, 0);
508 atomic_set(&inbuf->tail, 0);
509 inbuf->cs = cs;
510 inbuf->bcs = bcs; /*base driver: NULL*/
511 inbuf->rcvbuf = NULL; //FIXME
512 inbuf->inputstate = inputstate;
513}
514
515/* Initialize the b-channel structure */
516static struct bc_state *gigaset_initbcs(struct bc_state *bcs,
517 struct cardstate *cs, int channel)
518{
519 int i;
520
521 bcs->tx_skb = NULL; //FIXME -> hw part
522
523 skb_queue_head_init(&bcs->squeue);
524
525 bcs->corrupted = 0;
526 bcs->trans_down = 0;
527 bcs->trans_up = 0;
528
529 dbg(DEBUG_INIT, "setting up bcs[%d]->at_state", channel);
530 gigaset_at_init(&bcs->at_state, bcs, cs, -1);
531
532 bcs->rcvbytes = 0;
533
534#ifdef CONFIG_GIGASET_DEBUG
535 bcs->emptycount = 0;
536#endif
537
538 dbg(DEBUG_INIT, "allocating bcs[%d]->skb", channel);
539 bcs->fcs = PPP_INITFCS;
540 bcs->inputstate = 0;
541 if (cs->ignoreframes) {
542 bcs->inputstate |= INS_skip_frame;
543 bcs->skb = NULL;
544 } else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
545 skb_reserve(bcs->skb, HW_HDR_LEN);
546 else {
547 warn("could not allocate skb");
548 bcs->inputstate |= INS_skip_frame;
549 }
550
551 bcs->channel = channel;
552 bcs->cs = cs;
553
554 bcs->chstate = 0;
555 bcs->use_count = 1;
556 bcs->busy = 0;
557 bcs->ignore = cs->ignoreframes;
558
559 for (i = 0; i < AT_NUM; ++i)
560 bcs->commands[i] = NULL;
561
562 dbg(DEBUG_INIT, " setting up bcs[%d]->hw", channel);
563 if (cs->ops->initbcshw(bcs))
564 return bcs;
565
566//error:
567 dbg(DEBUG_INIT, " failed");
568
569 dbg(DEBUG_INIT, " freeing bcs[%d]->skb", channel);
570 if (bcs->skb)
571 dev_kfree_skb(bcs->skb);
572
573 return NULL;
574}
575
576/* gigaset_initcs
577 * Allocate and initialize cardstate structure for Gigaset driver
578 * Calls hardware dependent gigaset_initcshw() function
579 * Calls B channel initialization function gigaset_initbcs() for each B channel
580 * parameters:
581 * drv hardware driver the device belongs to
582 * channels number of B channels supported by device
583 * onechannel !=0: B channel data and AT commands share one communication channel
584 * ==0: B channels have separate communication channels
585 * ignoreframes number of frames to ignore after setting up B channel
586 * cidmode !=0: start in CallID mode
587 * modulename name of driver module (used for I4L registration)
588 * return value:
589 * pointer to cardstate structure
590 */
591struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
592 int onechannel, int ignoreframes,
593 int cidmode, const char *modulename)
594{
595 struct cardstate *cs = NULL;
596 int i;
597
598 dbg(DEBUG_INIT, "allocating cs");
599 cs = alloc_cs(drv);
600 if (!cs)
601 goto error;
602 dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1);
603 cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL);
604 if (!cs->bcs)
605 goto error;
606 dbg(DEBUG_INIT, "allocating inbuf");
607 cs->inbuf = kmalloc(sizeof(struct inbuf_t), GFP_KERNEL);
608 if (!cs->inbuf)
609 goto error;
610
611 cs->cs_init = 0;
612 cs->channels = channels;
613 cs->onechannel = onechannel;
614 cs->ignoreframes = ignoreframes;
615 INIT_LIST_HEAD(&cs->temp_at_states);
616 atomic_set(&cs->running, 0);
617 init_timer(&cs->timer); /* clear next & prev */
618 spin_lock_init(&cs->ev_lock);
619 atomic_set(&cs->ev_tail, 0);
620 atomic_set(&cs->ev_head, 0);
621 init_MUTEX_LOCKED(&cs->sem);
622 tasklet_init(&cs->event_tasklet, &gigaset_handle_event, (unsigned long) cs);
623 atomic_set(&cs->commands_pending, 0);
624 cs->cur_at_seq = 0;
625 cs->gotfwver = -1;
626 cs->open_count = 0;
627 cs->tty = NULL;
628 atomic_set(&cs->cidmode, cidmode != 0);
629
630 //if(onechannel) { //FIXME
631 cs->tabnocid = gigaset_tab_nocid_m10x;
632 cs->tabcid = gigaset_tab_cid_m10x;
633 //} else {
634 // cs->tabnocid = gigaset_tab_nocid;
635 // cs->tabcid = gigaset_tab_cid;
636 //}
637
638 init_waitqueue_head(&cs->waitqueue);
639 cs->waiting = 0;
640
641 atomic_set(&cs->mode, M_UNKNOWN);
642 atomic_set(&cs->mstate, MS_UNINITIALIZED);
643
644 for (i = 0; i < channels; ++i) {
645 dbg(DEBUG_INIT, "setting up bcs[%d].read", i);
646 if (!gigaset_initbcs(cs->bcs + i, cs, i))
647 goto error;
648 }
649
650 ++cs->cs_init;
651
652 dbg(DEBUG_INIT, "setting up at_state");
653 spin_lock_init(&cs->lock);
654 gigaset_at_init(&cs->at_state, NULL, cs, 0);
655 cs->dle = 0;
656 cs->cbytes = 0;
657
658 dbg(DEBUG_INIT, "setting up inbuf");
659 if (onechannel) { //FIXME distinction necessary?
660 gigaset_inbuf_init(cs->inbuf, cs->bcs, cs, INS_command);
661 } else
662 gigaset_inbuf_init(cs->inbuf, NULL, cs, INS_command);
663
664 atomic_set(&cs->connected, 0);
665
666 dbg(DEBUG_INIT, "setting up cmdbuf");
667 cs->cmdbuf = cs->lastcmdbuf = NULL;
668 spin_lock_init(&cs->cmdlock);
669 cs->curlen = 0;
670 cs->cmdbytes = 0;
671
672 /*
673 * Tell the ISDN4Linux subsystem (the LL) that
674 * a driver for a USB-Device is available !
675 * If this is done, "isdnctrl" is able to bind a device for this driver even
676 * if no physical usb-device is currently connected.
677 * But this device will just be accessable if a physical USB device is connected
678 * (via "gigaset_probe") .
679 */
680 dbg(DEBUG_INIT, "setting up iif");
681 if (!gigaset_register_to_LL(cs, modulename)) {
682 err("register_isdn=>error");
683 goto error;
684 }
685
686 make_valid(cs, VALID_ID);
687 ++cs->cs_init;
688 dbg(DEBUG_INIT, "setting up hw");
689 if (!cs->ops->initcshw(cs))
690 goto error;
691
692 ++cs->cs_init;
693
694 gigaset_if_init(cs);
695
696 atomic_set(&cs->running, 1);
697 cs->timer.data = (unsigned long) cs;
698 cs->timer.function = timer_tick;
699 cs->timer.expires = jiffies + GIG_TICK;
700 /* FIXME: can jiffies increase too much until the timer is added?
701 * Same problem(?) with mod_timer() in timer_tick(). */
702 add_timer(&cs->timer);
703
704 dbg(DEBUG_INIT, "cs initialized!");
705 up(&cs->sem);
706 return cs;
707
708error: if (cs)
709 up(&cs->sem);
710 dbg(DEBUG_INIT, "failed");
711 gigaset_freecs(cs);
712 return NULL;
713}
714EXPORT_SYMBOL_GPL(gigaset_initcs);
715
716/* ReInitialize the b-channel structure */ /* e.g. called on hangup, disconnect */
717void gigaset_bcs_reinit(struct bc_state *bcs)
718{
719 struct sk_buff *skb;
720 struct cardstate *cs = bcs->cs;
721 unsigned long flags;
722
723 while ((skb = skb_dequeue(&bcs->squeue)) != NULL)
724 dev_kfree_skb(skb);
725
726 spin_lock_irqsave(&cs->lock, flags); //FIXME
727 clear_at_state(&bcs->at_state);
728 bcs->at_state.ConState = 0;
729 bcs->at_state.timer_active = 0;
730 bcs->at_state.timer_expires = 0;
731 bcs->at_state.cid = -1; /* No CID defined */
732 spin_unlock_irqrestore(&cs->lock, flags);
733
734 bcs->inputstate = 0;
735
736#ifdef CONFIG_GIGASET_DEBUG
737 bcs->emptycount = 0;
738#endif
739
740 bcs->fcs = PPP_INITFCS;
741 bcs->chstate = 0;
742
743 bcs->ignore = cs->ignoreframes;
744 if (bcs->ignore)
745 bcs->inputstate |= INS_skip_frame;
746
747
748 cs->ops->reinitbcshw(bcs);
749}
750
751static void cleanup_cs(struct cardstate *cs)
752{
753 struct cmdbuf_t *cb, *tcb;
754 int i;
755 unsigned long flags;
756
757 spin_lock_irqsave(&cs->lock, flags);
758
759 atomic_set(&cs->mode, M_UNKNOWN);
760 atomic_set(&cs->mstate, MS_UNINITIALIZED);
761
762 clear_at_state(&cs->at_state);
763 dealloc_at_states(cs);
764 free_strings(&cs->at_state);
765 gigaset_at_init(&cs->at_state, NULL, cs, 0);
766
767 kfree(cs->inbuf->rcvbuf);
768 cs->inbuf->rcvbuf = NULL;
769 cs->inbuf->inputstate = INS_command;
770 atomic_set(&cs->inbuf->head, 0);
771 atomic_set(&cs->inbuf->tail, 0);
772
773 cb = cs->cmdbuf;
774 while (cb) {
775 tcb = cb;
776 cb = cb->next;
777 kfree(tcb);
778 }
779 cs->cmdbuf = cs->lastcmdbuf = NULL;
780 cs->curlen = 0;
781 cs->cmdbytes = 0;
782 cs->gotfwver = -1;
783 cs->dle = 0;
784 cs->cur_at_seq = 0;
785 atomic_set(&cs->commands_pending, 0);
786 cs->cbytes = 0;
787
788 spin_unlock_irqrestore(&cs->lock, flags);
789
790 for (i = 0; i < cs->channels; ++i) {
791 gigaset_freebcs(cs->bcs + i);
792 if (!gigaset_initbcs(cs->bcs + i, cs, i))
793 break; //FIXME error handling
794 }
795
796 if (cs->waiting) {
797 cs->cmd_result = -ENODEV;
798 cs->waiting = 0;
799 wake_up_interruptible(&cs->waitqueue);
800 }
801}
802
803
804int gigaset_start(struct cardstate *cs)
805{
806 if (down_interruptible(&cs->sem))
807 return 0;
808 //info("USB device for Gigaset 307x now attached to Dev %d", ucs->minor);
809
810 atomic_set(&cs->connected, 1);
811
812 if (atomic_read(&cs->mstate) != MS_LOCKED) {
813 cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS);
814 cs->ops->baud_rate(cs, B115200);
815 cs->ops->set_line_ctrl(cs, CS8);
816 cs->control_state = TIOCM_DTR|TIOCM_RTS;
817 } else {
818 //FIXME use some saved values?
819 }
820
821 cs->waiting = 1;
822
823 if (!gigaset_add_event(cs, &cs->at_state, EV_START, NULL, 0, NULL)) {
824 cs->waiting = 0;
825 //FIXME what should we do?
826 goto error;
827 }
828
829 dbg(DEBUG_CMD, "scheduling START");
830 gigaset_schedule_event(cs);
831
832 wait_event(cs->waitqueue, !cs->waiting);
833
834 up(&cs->sem);
835 return 1;
836
837error:
838 up(&cs->sem);
839 return 0;
840}
841EXPORT_SYMBOL_GPL(gigaset_start);
842
843void gigaset_shutdown(struct cardstate *cs)
844{
845 down(&cs->sem);
846
847 cs->waiting = 1;
848
849 if (!gigaset_add_event(cs, &cs->at_state, EV_SHUTDOWN, NULL, 0, NULL)) {
850 //FIXME what should we do?
851 goto exit;
852 }
853
854 dbg(DEBUG_CMD, "scheduling SHUTDOWN");
855 gigaset_schedule_event(cs);
856
857 if (wait_event_interruptible(cs->waitqueue, !cs->waiting)) {
858 warn("aborted");
859 //FIXME
860 }
861
862 if (atomic_read(&cs->mstate) != MS_LOCKED) {
863 //FIXME?
864 //gigaset_baud_rate(cs, B115200);
865 //gigaset_set_line_ctrl(cs, CS8);
866 //gigaset_set_modem_ctrl(cs, TIOCM_DTR|TIOCM_RTS, 0);
867 //cs->control_state = 0;
868 } else {
869 //FIXME use some saved values?
870 }
871
872 cleanup_cs(cs);
873
874exit:
875 up(&cs->sem);
876}
877EXPORT_SYMBOL_GPL(gigaset_shutdown);
878
879void gigaset_stop(struct cardstate *cs)
880{
881 down(&cs->sem);
882
883 atomic_set(&cs->connected, 0);
884
885 cs->waiting = 1;
886
887 if (!gigaset_add_event(cs, &cs->at_state, EV_STOP, NULL, 0, NULL)) {
888 //FIXME what should we do?
889 goto exit;
890 }
891
892 dbg(DEBUG_CMD, "scheduling STOP");
893 gigaset_schedule_event(cs);
894
895 if (wait_event_interruptible(cs->waitqueue, !cs->waiting)) {
896 warn("aborted");
897 //FIXME
898 }
899
900 /* Tell the LL that the device is not available .. */
901 gigaset_i4l_cmd(cs, ISDN_STAT_STOP); // FIXME move to event layer?
902
903 cleanup_cs(cs);
904
905exit:
906 up(&cs->sem);
907}
908EXPORT_SYMBOL_GPL(gigaset_stop);
909
910static LIST_HEAD(drivers);
911static spinlock_t driver_lock = SPIN_LOCK_UNLOCKED;
912
913struct cardstate *gigaset_get_cs_by_id(int id)
914{
915 unsigned long flags;
916 static struct cardstate *ret = NULL;
917 static struct cardstate *cs;
918 struct gigaset_driver *drv;
919 unsigned i;
920
921 spin_lock_irqsave(&driver_lock, flags);
922 list_for_each_entry(drv, &drivers, list) {
923 spin_lock(&drv->lock);
924 for (i = 0; i < drv->minors; ++i) {
925 if (drv->flags[i] & VALID_ID) {
926 cs = drv->cs + i;
927 if (cs->myid == id)
928 ret = cs;
929 }
930 if (ret)
931 break;
932 }
933 spin_unlock(&drv->lock);
934 if (ret)
935 break;
936 }
937 spin_unlock_irqrestore(&driver_lock, flags);
938 return ret;
939}
940
941void gigaset_debugdrivers(void)
942{
943 unsigned long flags;
944 static struct cardstate *cs;
945 struct gigaset_driver *drv;
946 unsigned i;
947
948 spin_lock_irqsave(&driver_lock, flags);
949 list_for_each_entry(drv, &drivers, list) {
950 dbg(DEBUG_DRIVER, "driver %p", drv);
951 spin_lock(&drv->lock);
952 for (i = 0; i < drv->minors; ++i) {
953 dbg(DEBUG_DRIVER, " index %u", i);
954 dbg(DEBUG_DRIVER, " flags 0x%02x", drv->flags[i]);
955 cs = drv->cs + i;
956 dbg(DEBUG_DRIVER, " cardstate %p", cs);
957 dbg(DEBUG_DRIVER, " minor_index %u", cs->minor_index);
958 dbg(DEBUG_DRIVER, " driver %p", cs->driver);
959 dbg(DEBUG_DRIVER, " i4l id %d", cs->myid);
960 }
961 spin_unlock(&drv->lock);
962 }
963 spin_unlock_irqrestore(&driver_lock, flags);
964}
965EXPORT_SYMBOL_GPL(gigaset_debugdrivers);
966
967struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty)
968{
969 if (tty->index < 0 || tty->index >= tty->driver->num)
970 return NULL;
971 return gigaset_get_cs_by_minor(tty->index + tty->driver->minor_start);
972}
973
974struct cardstate *gigaset_get_cs_by_minor(unsigned minor)
975{
976 unsigned long flags;
977 static struct cardstate *ret = NULL;
978 struct gigaset_driver *drv;
979 unsigned index;
980
981 spin_lock_irqsave(&driver_lock, flags);
982 list_for_each_entry(drv, &drivers, list) {
983 if (minor < drv->minor || minor >= drv->minor + drv->minors)
984 continue;
985 index = minor - drv->minor;
986 spin_lock(&drv->lock);
987 if (drv->flags[index] & VALID_MINOR)
988 ret = drv->cs + index;
989 spin_unlock(&drv->lock);
990 if (ret)
991 break;
992 }
993 spin_unlock_irqrestore(&driver_lock, flags);
994 return ret;
995}
996
997void gigaset_freedriver(struct gigaset_driver *drv)
998{
999 unsigned long flags;
1000
1001 spin_lock_irqsave(&driver_lock, flags);
1002 list_del(&drv->list);
1003 spin_unlock_irqrestore(&driver_lock, flags);
1004
1005 gigaset_if_freedriver(drv);
1006 module_put(drv->owner);
1007
1008 kfree(drv->cs);
1009 kfree(drv->flags);
1010 kfree(drv);
1011}
1012EXPORT_SYMBOL_GPL(gigaset_freedriver);
1013
1014/* gigaset_initdriver
1015 * Allocate and initialize gigaset_driver structure. Initialize interface.
1016 * parameters:
1017 * minor First minor number
1018 * minors Number of minors this driver can handle
1019 * procname Name of the driver (e.g. for /proc/tty/drivers, path in /proc/driver)
1020 * devname Name of the device files (prefix without minor number)
1021 * devfsname Devfs name of the device files without %d
1022 * return value:
1023 * Pointer to the gigaset_driver structure on success, NULL on failure.
1024 */
1025struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
1026 const char *procname,
1027 const char *devname,
1028 const char *devfsname,
1029 const struct gigaset_ops *ops,
1030 struct module *owner)
1031{
1032 struct gigaset_driver *drv;
1033 unsigned long flags;
1034 unsigned i;
1035
1036 drv = kmalloc(sizeof *drv, GFP_KERNEL);
1037 if (!drv)
1038 return NULL;
1039 if (!try_module_get(owner))
1040 return NULL;
1041
1042 drv->cs = NULL;
1043 drv->have_tty = 0;
1044 drv->minor = minor;
1045 drv->minors = minors;
1046 spin_lock_init(&drv->lock);
1047 drv->blocked = 0;
1048 drv->ops = ops;
1049 drv->owner = owner;
1050 INIT_LIST_HEAD(&drv->list);
1051
1052 drv->cs = kmalloc(minors * sizeof *drv->cs, GFP_KERNEL);
1053 if (!drv->cs)
1054 goto out1;
1055 drv->flags = kmalloc(minors * sizeof *drv->flags, GFP_KERNEL);
1056 if (!drv->flags)
1057 goto out2;
1058
1059 for (i = 0; i < minors; ++i) {
1060 drv->flags[i] = 0;
1061 drv->cs[i].driver = drv;
1062 drv->cs[i].ops = drv->ops;
1063 drv->cs[i].minor_index = i;
1064 }
1065
1066 gigaset_if_initdriver(drv, procname, devname, devfsname);
1067
1068 spin_lock_irqsave(&driver_lock, flags);
1069 list_add(&drv->list, &drivers);
1070 spin_unlock_irqrestore(&driver_lock, flags);
1071
1072 return drv;
1073
1074out2:
1075 kfree(drv->cs);
1076out1:
1077 kfree(drv);
1078 module_put(owner);
1079 return NULL;
1080}
1081EXPORT_SYMBOL_GPL(gigaset_initdriver);
1082
1083static struct cardstate *alloc_cs(struct gigaset_driver *drv)
1084{
1085 unsigned long flags;
1086 unsigned i;
1087 static struct cardstate *ret = NULL;
1088
1089 spin_lock_irqsave(&drv->lock, flags);
1090 for (i = 0; i < drv->minors; ++i) {
1091 if (!(drv->flags[i] & VALID_MINOR)) {
1092 drv->flags[i] = VALID_MINOR;
1093 ret = drv->cs + i;
1094 }
1095 if (ret)
1096 break;
1097 }
1098 spin_unlock_irqrestore(&drv->lock, flags);
1099 return ret;
1100}
1101
1102static void free_cs(struct cardstate *cs)
1103{
1104 unsigned long flags;
1105 struct gigaset_driver *drv = cs->driver;
1106 spin_lock_irqsave(&drv->lock, flags);
1107 drv->flags[cs->minor_index] = 0;
1108 spin_unlock_irqrestore(&drv->lock, flags);
1109}
1110
1111static void make_valid(struct cardstate *cs, unsigned mask)
1112{
1113 unsigned long flags;
1114 struct gigaset_driver *drv = cs->driver;
1115 spin_lock_irqsave(&drv->lock, flags);
1116 drv->flags[cs->minor_index] |= mask;
1117 spin_unlock_irqrestore(&drv->lock, flags);
1118}
1119
1120static void make_invalid(struct cardstate *cs, unsigned mask)
1121{
1122 unsigned long flags;
1123 struct gigaset_driver *drv = cs->driver;
1124 spin_lock_irqsave(&drv->lock, flags);
1125 drv->flags[cs->minor_index] &= ~mask;
1126 spin_unlock_irqrestore(&drv->lock, flags);
1127}
1128
1129/* For drivers without fixed assignment device<->cardstate (usb) */
1130struct cardstate *gigaset_getunassignedcs(struct gigaset_driver *drv)
1131{
1132 unsigned long flags;
1133 struct cardstate *cs = NULL;
1134 unsigned i;
1135
1136 spin_lock_irqsave(&drv->lock, flags);
1137 if (drv->blocked)
1138 goto exit;
1139 for (i = 0; i < drv->minors; ++i) {
1140 if ((drv->flags[i] & VALID_MINOR) &&
1141 !(drv->flags[i] & ASSIGNED)) {
1142 drv->flags[i] |= ASSIGNED;
1143 cs = drv->cs + i;
1144 break;
1145 }
1146 }
1147exit:
1148 spin_unlock_irqrestore(&drv->lock, flags);
1149 return cs;
1150}
1151EXPORT_SYMBOL_GPL(gigaset_getunassignedcs);
1152
1153void gigaset_unassign(struct cardstate *cs)
1154{
1155 unsigned long flags;
1156 unsigned *minor_flags;
1157 struct gigaset_driver *drv;
1158
1159 if (!cs)
1160 return;
1161 drv = cs->driver;
1162 spin_lock_irqsave(&drv->lock, flags);
1163 minor_flags = drv->flags + cs->minor_index;
1164 if (*minor_flags & VALID_MINOR)
1165 *minor_flags &= ~ASSIGNED;
1166 spin_unlock_irqrestore(&drv->lock, flags);
1167}
1168EXPORT_SYMBOL_GPL(gigaset_unassign);
1169
1170void gigaset_blockdriver(struct gigaset_driver *drv)
1171{
1172 unsigned long flags;
1173 spin_lock_irqsave(&drv->lock, flags);
1174 drv->blocked = 1;
1175 spin_unlock_irqrestore(&drv->lock, flags);
1176}
1177EXPORT_SYMBOL_GPL(gigaset_blockdriver);
1178
1179static int __init gigaset_init_module(void)
1180{
1181 /* in accordance with the principle of least astonishment,
1182 * setting the 'debug' parameter to 1 activates a sensible
1183 * set of default debug levels
1184 */
1185 if (gigaset_debuglevel == 1)
1186 gigaset_debuglevel = DEBUG_DEFAULT;
1187
1188 info(DRIVER_AUTHOR);
1189 info(DRIVER_DESC);
1190 return 0;
1191}
1192
1193static void __exit gigaset_exit_module(void)
1194{
1195}
1196
1197module_init(gigaset_init_module);
1198module_exit(gigaset_exit_module);
1199
1200MODULE_AUTHOR(DRIVER_AUTHOR);
1201MODULE_DESCRIPTION(DRIVER_DESC);
1202
1203MODULE_LICENSE("GPL");
diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h
new file mode 100644
index 000000000000..729edcdb6dac
--- /dev/null
+++ b/drivers/isdn/gigaset/gigaset.h
@@ -0,0 +1,938 @@
1/* Siemens Gigaset 307x driver
2 * Common header file for all connection variants
3 *
4 * Written by Stefan Eilers <Eilers.Stefan@epost.de>
5 * and Hansjoerg Lipp <hjlipp@web.de>
6 *
7 * Version: $Id: gigaset.h,v 1.97.4.26 2006/02/04 18:28:16 hjlipp Exp $
8 * ===========================================================================
9 */
10
11#ifndef GIGASET_H
12#define GIGASET_H
13
14#include <linux/config.h>
15#include <linux/kernel.h>
16#include <linux/compiler.h>
17#include <linux/types.h>
18#include <asm/atomic.h>
19#include <linux/spinlock.h>
20#include <linux/isdnif.h>
21#include <linux/usb.h>
22#include <linux/skbuff.h>
23#include <linux/netdevice.h>
24#include <linux/ppp_defs.h>
25#include <linux/timer.h>
26#include <linux/interrupt.h>
27#include <linux/tty.h>
28#include <linux/tty_driver.h>
29#include <linux/list.h>
30
31#define GIG_VERSION {0,5,0,0}
32#define GIG_COMPAT {0,4,0,0}
33
34#define MAX_REC_PARAMS 10 /* Max. number of params in response string */
35#define MAX_RESP_SIZE 512 /* Max. size of a response string */
36#define HW_HDR_LEN 2 /* Header size used to store ack info */
37
38#define MAX_EVENTS 64 /* size of event queue */
39
40#define RBUFSIZE 8192
41#define SBUFSIZE 4096 /* sk_buff payload size */
42
43#define MAX_BUF_SIZE (SBUFSIZE - 2) /* Max. size of a data packet from LL */
44#define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
45
46/* compile time options */
47#define GIG_MAJOR 0
48
49#define GIG_MAYINITONDIAL
50#define GIG_RETRYCID
51#define GIG_X75
52
53#define MAX_TIMER_INDEX 1000
54#define MAX_SEQ_INDEX 1000
55
56#define GIG_TICK (HZ / 10)
57
58/* timeout values (unit: 1 sec) */
59#define INIT_TIMEOUT 1
60
61/* timeout values (unit: 0.1 sec) */
62#define RING_TIMEOUT 3 /* for additional parameters to RING */
63#define BAS_TIMEOUT 20 /* for response to Base USB ops */
64#define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */
65
66#define BAS_RETRY 3 /* max. retries for base USB ops */
67
68#define MAXACT 3
69
70#define IFNULL(a) if (unlikely(!(a)))
71#define IFNULLRET(a) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); return; }
72#define IFNULLRETVAL(a,b) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); return (b); }
73#define IFNULLCONT(a) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); continue; }
74#define IFNULLGOTO(a,b) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); goto b; }
75
76extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */
77
78/* any combination of these can be given with the 'debug=' parameter to insmod, e.g.
79 * 'insmod usb_gigaset.o debug=0x2c' will set DEBUG_OPEN, DEBUG_CMD and DEBUG_INTR. */
80enum debuglevel { /* up to 24 bits (atomic_t) */
81 DEBUG_REG = 0x0002, /* serial port I/O register operations */
82 DEBUG_OPEN = 0x0004, /* open/close serial port */
83 DEBUG_INTR = 0x0008, /* interrupt processing */
84 DEBUG_INTR_DUMP = 0x0010, /* Activating hexdump debug output on interrupt
85 requests, not available as run-time option */
86 DEBUG_CMD = 0x00020, /* sent/received LL commands */
87 DEBUG_STREAM = 0x00040, /* application data stream I/O events */
88 DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */
89 DEBUG_LLDATA = 0x00100, /* sent/received LL data */
90 DEBUG_INTR_0 = 0x00200, /* serial port output interrupt processing */
91 DEBUG_DRIVER = 0x00400, /* driver structure */
92 DEBUG_HDLC = 0x00800, /* M10x HDLC processing */
93 DEBUG_WRITE = 0x01000, /* M105 data write */
94 DEBUG_TRANSCMD = 0x02000, /*AT-COMMANDS+RESPONSES*/
95 DEBUG_MCMD = 0x04000, /*COMMANDS THAT ARE SENT VERY OFTEN*/
96 DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data structures */
97 DEBUG_LOCK = 0x10000, /* semaphore operations */
98 DEBUG_OUTPUT = 0x20000, /* output to device */
99 DEBUG_ISO = 0x40000, /* isochronous transfers */
100 DEBUG_IF = 0x80000, /* character device operations */
101 DEBUG_USBREQ = 0x100000, /* USB communication (except payload data) */
102 DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when MS_LOCKED */
103
104 DEBUG_ANY = 0x3fffff, /* print message if any of the others is activated */
105};
106
107#ifdef CONFIG_GIGASET_DEBUG
108#define DEBUG_DEFAULT (DEBUG_INIT | DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ)
109//#define DEBUG_DEFAULT (DEBUG_LOCK | DEBUG_INIT | DEBUG_TRANSCMD | DEBUG_CMD | DEBUF_IF | DEBUG_DRIVER | DEBUG_OUTPUT | DEBUG_INTR)
110#else
111#define DEBUG_DEFAULT 0
112#endif
113
114/* redefine syslog macros to prepend module name instead of entire source path */
115/* The space before the comma in ", ##" is needed by gcc 2.95 */
116#undef info
117#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg)
118
119#undef notice
120#define notice(format, arg...) printk(KERN_NOTICE "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg)
121
122#undef warn
123#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg)
124
125#undef err
126#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg)
127
128#undef dbg
129#ifdef CONFIG_GIGASET_DEBUG
130#define dbg(level, format, arg...) do { if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \
131 printk(KERN_DEBUG "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg); } while (0)
132#else
133#define dbg(level, format, arg...) do {} while (0)
134#endif
135
136void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
137 size_t len, const unsigned char *buf, int from_user);
138
139/* connection state */
140#define ZSAU_NONE 0
141#define ZSAU_DISCONNECT_IND 4
142#define ZSAU_OUTGOING_CALL_PROCEEDING 1
143#define ZSAU_PROCEEDING 1
144#define ZSAU_CALL_DELIVERED 2
145#define ZSAU_ACTIVE 3
146#define ZSAU_NULL 5
147#define ZSAU_DISCONNECT_REQ 6
148#define ZSAU_UNKNOWN -1
149
150/* USB control transfer requests */
151#define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
152#define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
153
154/* int-in-events 3070 */
155#define HD_B1_FLOW_CONTROL 0x80
156#define HD_B2_FLOW_CONTROL 0x81
157#define HD_RECEIVEATDATA_ACK (0x35) // 3070 // att: HD_RECEIVE>>AT<<DATA_ACK
158#define HD_READY_SEND_ATDATA (0x36) // 3070
159#define HD_OPEN_ATCHANNEL_ACK (0x37) // 3070
160#define HD_CLOSE_ATCHANNEL_ACK (0x38) // 3070
161#define HD_DEVICE_INIT_OK (0x11) // ISurf USB + 3070
162#define HD_OPEN_B1CHANNEL_ACK (0x51) // ISurf USB + 3070
163#define HD_OPEN_B2CHANNEL_ACK (0x52) // ISurf USB + 3070
164#define HD_CLOSE_B1CHANNEL_ACK (0x53) // ISurf USB + 3070
165#define HD_CLOSE_B2CHANNEL_ACK (0x54) // ISurf USB + 3070
166// Powermangment
167#define HD_SUSPEND_END (0x61) // ISurf USB
168// Configuration
169#define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) // ISurf USB + 3070
170
171/* control requests 3070 */
172#define HD_OPEN_B1CHANNEL (0x23) // ISurf USB + 3070
173#define HD_CLOSE_B1CHANNEL (0x24) // ISurf USB + 3070
174#define HD_OPEN_B2CHANNEL (0x25) // ISurf USB + 3070
175#define HD_CLOSE_B2CHANNEL (0x26) // ISurf USB + 3070
176#define HD_RESET_INTERRUPT_PIPE (0x27) // ISurf USB + 3070
177#define HD_DEVICE_INIT_ACK (0x34) // ISurf USB + 3070
178#define HD_WRITE_ATMESSAGE (0x12) // 3070
179#define HD_READ_ATMESSAGE (0x13) // 3070
180#define HD_OPEN_ATCHANNEL (0x28) // 3070
181#define HD_CLOSE_ATCHANNEL (0x29) // 3070
182
183/* USB frames for isochronous transfer */
184#define BAS_FRAMETIME 1 /* number of milliseconds between frames */
185#define BAS_NUMFRAMES 8 /* number of frames per URB */
186#define BAS_MAXFRAME 16 /* allocated bytes per frame */
187#define BAS_NORMFRAME 8 /* send size without flow control */
188#define BAS_HIGHFRAME 10 /* " " with positive flow control */
189#define BAS_LOWFRAME 5 /* " " with negative flow control */
190#define BAS_CORRFRAMES 4 /* flow control multiplicator */
191
192#define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES) /* size of isochronous input buffer per URB */
193#define BAS_OUTBUFSIZE 4096 /* size of common isochronous output buffer */
194#define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isochronous output buffer */
195
196#define BAS_INURBS 3
197#define BAS_OUTURBS 3
198
199/* variable commands in struct bc_state */
200#define AT_ISO 0
201#define AT_DIAL 1
202#define AT_MSN 2
203#define AT_BC 3
204#define AT_PROTO 4
205#define AT_TYPE 5
206#define AT_HLC 6
207#define AT_NUM 7
208
209/* variables in struct at_state_t */
210#define VAR_ZSAU 0
211#define VAR_ZDLE 1
212#define VAR_ZVLS 2
213#define VAR_ZCTP 3
214#define VAR_NUM 4
215
216#define STR_NMBR 0
217#define STR_ZCPN 1
218#define STR_ZCON 2
219#define STR_ZBC 3
220#define STR_ZHLC 4
221#define STR_NUM 5
222
223#define EV_TIMEOUT -105
224#define EV_IF_VER -106
225#define EV_PROC_CIDMODE -107
226#define EV_SHUTDOWN -108
227#define EV_START -110
228#define EV_STOP -111
229#define EV_IF_LOCK -112
230#define EV_PROTO_L2 -113
231#define EV_ACCEPT -114
232#define EV_DIAL -115
233#define EV_HUP -116
234#define EV_BC_OPEN -117
235#define EV_BC_CLOSED -118
236
237/* input state */
238#define INS_command 0x0001
239#define INS_DLE_char 0x0002
240#define INS_byte_stuff 0x0004
241#define INS_have_data 0x0008
242#define INS_skip_frame 0x0010
243#define INS_DLE_command 0x0020
244#define INS_flag_hunt 0x0040
245
246/* channel state */
247#define CHS_D_UP 0x01
248#define CHS_B_UP 0x02
249#define CHS_NOTIFY_LL 0x04
250
251#define ICALL_REJECT 0
252#define ICALL_ACCEPT 1
253#define ICALL_IGNORE 2
254
255/* device state */
256#define MS_UNINITIALIZED 0
257#define MS_INIT 1
258#define MS_LOCKED 2
259#define MS_SHUTDOWN 3
260#define MS_RECOVER 4
261#define MS_READY 5
262
263/* mode */
264#define M_UNKNOWN 0
265#define M_CONFIG 1
266#define M_UNIMODEM 2
267#define M_CID 3
268
269/* start mode */
270#define SM_LOCKED 0
271#define SM_ISDN 1 /* default */
272
273struct gigaset_ops;
274struct gigaset_driver;
275
276struct usb_cardstate;
277struct ser_cardstate;
278struct bas_cardstate;
279
280struct bc_state;
281struct usb_bc_state;
282struct ser_bc_state;
283struct bas_bc_state;
284
285struct reply_t {
286 int resp_code; /* RSP_XXXX */
287 int min_ConState; /* <0 => ignore */
288 int max_ConState; /* <0 => ignore */
289 int parameter; /* e.g. ZSAU_XXXX <0: ignore*/
290 int new_ConState; /* <0 => ignore */
291 int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/
292 int action[MAXACT]; /* ACT_XXXX */
293 char *command; /* NULL==none */
294};
295
296extern struct reply_t gigaset_tab_cid_m10x[];
297extern struct reply_t gigaset_tab_nocid_m10x[];
298
299struct inbuf_t {
300 unsigned char *rcvbuf; /* usb-gigaset receive buffer */
301 struct bc_state *bcs;
302 struct cardstate *cs;
303 int inputstate;
304
305 atomic_t head, tail;
306 unsigned char data[RBUFSIZE];
307};
308
309/* isochronous write buffer structure
310 * circular buffer with pad area for extraction of complete USB frames
311 * - data[read..nextread-1] is valid data already submitted to the USB subsystem
312 * - data[nextread..write-1] is valid data yet to be sent
313 * - data[write] is the next byte to write to
314 * - in byte-oriented L2 procotols, it is completely free
315 * - in bit-oriented L2 procotols, it may contain a partial byte of valid data
316 * - data[write+1..read-1] is free
317 * - wbits is the number of valid data bits in data[write], starting at the LSB
318 * - writesem is the semaphore for writing to the buffer:
319 * if writesem <= 0, data[write..read-1] is currently being written to
320 * - idle contains the byte value to repeat when the end of valid data is
321 * reached; if nextread==write (buffer contains no data to send), either the
322 * BAS_OUTBUFPAD bytes immediately before data[write] (if write>=BAS_OUTBUFPAD)
323 * or those of the pad area (if write<BAS_OUTBUFPAD) are also filled with that
324 * value
325 * - optionally, the following statistics on the buffer's usage can be collected:
326 * maxfill: maximum number of bytes occupied
327 * idlefills: number of times a frame of idle bytes is prepared
328 * emptygets: number of times the buffer was empty when a data frame was requested
329 * backtoback: number of times two data packets were entered into the buffer
330 * without intervening idle flags
331 * nakedback: set if no idle flags have been inserted since the last data packet
332 */
333struct isowbuf_t {
334 atomic_t read;
335 atomic_t nextread;
336 atomic_t write;
337 atomic_t writesem;
338 int wbits;
339 unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD];
340 unsigned char idle;
341};
342
343/* isochronous write URB context structure
344 * data to be stored along with the URB and retrieved when it is returned
345 * as completed by the USB subsystem
346 * - urb: pointer to the URB itself
347 * - bcs: pointer to the B Channel control structure
348 * - limit: end of write buffer area covered by this URB
349 */
350struct isow_urbctx_t {
351 struct urb *urb;
352 struct bc_state *bcs;
353 int limit;
354};
355
356/* AT state structure
357 * data associated with the state of an ISDN connection, whether or not
358 * it is currently assigned a B channel
359 */
360struct at_state_t {
361 struct list_head list;
362 int waiting;
363 int getstring;
364 atomic_t timer_index;
365 unsigned long timer_expires;
366 int timer_active;
367 unsigned int ConState; /* State of connection */
368 struct reply_t *replystruct;
369 int cid;
370 int int_var[VAR_NUM]; /* see VAR_XXXX */
371 char *str_var[STR_NUM]; /* see STR_XXXX */
372 unsigned pending_commands; /* see PC_XXXX */
373 atomic_t seq_index;
374
375 struct cardstate *cs;
376 struct bc_state *bcs;
377};
378
379struct resp_type_t {
380 unsigned char *response;
381 int resp_code; /* RSP_XXXX */
382 int type; /* RT_XXXX */
383};
384
385struct prot_skb {
386 atomic_t empty;
387 struct semaphore *sem;
388 struct sk_buff *skb;
389};
390
391struct event_t {
392 int type;
393 void *ptr, *arg;
394 int parameter;
395 int cid;
396 struct at_state_t *at_state;
397};
398
399/* This buffer holds all information about the used B-Channel */
400struct bc_state {
401 struct sk_buff *tx_skb; /* Current transfer buffer to modem */
402 struct sk_buff_head squeue; /* B-Channel send Queue */
403
404 /* Variables for debugging .. */
405 int corrupted; /* Counter for corrupted packages */
406 int trans_down; /* Counter of packages (downstream) */
407 int trans_up; /* Counter of packages (upstream) */
408
409 struct at_state_t at_state;
410 unsigned long rcvbytes;
411
412 __u16 fcs;
413 struct sk_buff *skb;
414 int inputstate; /* see INS_XXXX */
415
416 int channel;
417
418 struct cardstate *cs;
419
420 unsigned chstate; /* bitmap (CHS_*) */
421 int ignore;
422 unsigned proto2; /* Layer 2 protocol (ISDN_PROTO_L2_*) */
423 char *commands[AT_NUM]; /* see AT_XXXX */
424
425#ifdef CONFIG_GIGASET_DEBUG
426 int emptycount;
427#endif
428 int busy;
429 int use_count;
430
431 /* hardware drivers */
432 union {
433 struct ser_bc_state *ser; /* private data of serial hardware driver */
434 struct usb_bc_state *usb; /* private data of usb hardware driver */
435 struct bas_bc_state *bas;
436 } hw;
437};
438
439struct cardstate {
440 struct gigaset_driver *driver;
441 unsigned minor_index;
442
443 const struct gigaset_ops *ops;
444
445 /* Stuff to handle communication */
446 //wait_queue_head_t initwait;
447 wait_queue_head_t waitqueue;
448 int waiting;
449 atomic_t mode; /* see M_XXXX */
450 atomic_t mstate; /* Modem state: see MS_XXXX */
451 /* only changed by the event layer */
452 int cmd_result;
453
454 int channels;
455 struct bc_state *bcs; /* Array of struct bc_state */
456
457 int onechannel; /* data and commands transmitted in one stream (M10x) */
458
459 spinlock_t lock;
460 struct at_state_t at_state; /* at_state_t for cid == 0 */
461 struct list_head temp_at_states; /* list of temporary "struct at_state_t"s without B channel */
462
463 struct inbuf_t *inbuf;
464
465 struct cmdbuf_t *cmdbuf, *lastcmdbuf;
466 spinlock_t cmdlock;
467 unsigned curlen, cmdbytes;
468
469 unsigned open_count;
470 struct tty_struct *tty;
471 struct tasklet_struct if_wake_tasklet;
472 unsigned control_state;
473
474 unsigned fwver[4];
475 int gotfwver;
476
477 atomic_t running; /* !=0 if events are handled */
478 atomic_t connected; /* !=0 if hardware is connected */
479
480 atomic_t cidmode;
481
482 int myid; /* id for communication with LL */
483 isdn_if iif;
484
485 struct reply_t *tabnocid;
486 struct reply_t *tabcid;
487 int cs_init;
488 int ignoreframes; /* frames to ignore after setting up the B channel */
489 struct semaphore sem; /* locks this structure: */
490 /* connected is not changed, */
491 /* hardware_up is not changed, */
492 /* MState is not changed to or from MS_LOCKED */
493
494 struct timer_list timer;
495 int retry_count;
496 int dle; /* !=0 if modem commands/responses are dle encoded */
497 int cur_at_seq; /* sequence of AT commands being processed */
498 int curchannel; /* channel, those commands are meant for */
499 atomic_t commands_pending; /* flag(s) in xxx.commands_pending have been set */
500 struct tasklet_struct event_tasklet; /* tasklet for serializing AT commands. Scheduled
501 * -> for modem reponses (and incomming data for M10x)
502 * -> on timeout
503 * -> after setting bits in xxx.at_state.pending_command
504 * (e.g. command from LL) */
505 struct tasklet_struct write_tasklet; /* tasklet for serial output
506 * (not used in base driver) */
507
508 /* event queue */
509 struct event_t events[MAX_EVENTS];
510 atomic_t ev_tail, ev_head;
511 spinlock_t ev_lock;
512
513 /* current modem response */
514 unsigned char respdata[MAX_RESP_SIZE];
515 unsigned cbytes;
516
517 /* hardware drivers */
518 union {
519 struct usb_cardstate *usb; /* private data of USB hardware driver */
520 struct ser_cardstate *ser; /* private data of serial hardware driver */
521 struct bas_cardstate *bas; /* private data of base hardware driver */
522 } hw;
523};
524
525struct gigaset_driver {
526 struct list_head list;
527 spinlock_t lock; /* locks minor tables and blocked */
528 //struct semaphore sem; /* locks this structure */
529 struct tty_driver *tty;
530 unsigned have_tty;
531 unsigned minor;
532 unsigned minors;
533 struct cardstate *cs;
534 unsigned *flags;
535 int blocked;
536
537 const struct gigaset_ops *ops;
538 struct module *owner;
539};
540
541struct cmdbuf_t {
542 struct cmdbuf_t *next, *prev;
543 int len, offset;
544 struct tasklet_struct *wake_tasklet;
545 unsigned char buf[0];
546};
547
548struct bas_bc_state {
549 /* isochronous output state */
550 atomic_t running;
551 atomic_t corrbytes;
552 spinlock_t isooutlock;
553 struct isow_urbctx_t isoouturbs[BAS_OUTURBS];
554 struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl;
555 struct isowbuf_t *isooutbuf;
556 unsigned numsub; /* submitted URB counter (for diagnostic messages only) */
557 struct tasklet_struct sent_tasklet;
558
559 /* isochronous input state */
560 spinlock_t isoinlock;
561 struct urb *isoinurbs[BAS_INURBS];
562 unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS];
563 struct urb *isoindone; /* completed isoc read URB */
564 int loststatus; /* status of dropped URB */
565 unsigned isoinlost; /* number of bytes lost */
566 /* state of bit unstuffing algorithm (in addition to BC_state.inputstate) */
567 unsigned seqlen; /* number of '1' bits not yet unstuffed */
568 unsigned inbyte, inbits; /* collected bits for next byte */
569 /* statistics */
570 unsigned goodbytes; /* bytes correctly received */
571 unsigned alignerrs; /* frames with incomplete byte at end */
572 unsigned fcserrs; /* FCS errors */
573 unsigned frameerrs; /* framing errors */
574 unsigned giants; /* long frames */
575 unsigned runts; /* short frames */
576 unsigned aborts; /* HDLC aborts */
577 unsigned shared0s; /* '0' bits shared between flags */
578 unsigned stolen0s; /* '0' stuff bits also serving as leading flag bits */
579 struct tasklet_struct rcvd_tasklet;
580};
581
582struct gigaset_ops {
583 /* Called from ev-layer.c/interface.c for sending AT commands to the device */
584 int (*write_cmd)(struct cardstate *cs,
585 const unsigned char *buf, int len,
586 struct tasklet_struct *wake_tasklet);
587
588 /* Called from interface.c for additional device control */
589 int (*write_room)(struct cardstate *cs);
590 int (*chars_in_buffer)(struct cardstate *cs);
591 int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]);
592
593 /* Called from ev-layer.c after setting up connection
594 * Should call gigaset_bchannel_up(), when finished. */
595 int (*init_bchannel)(struct bc_state *bcs);
596
597 /* Called from ev-layer.c after hanging up
598 * Should call gigaset_bchannel_down(), when finished. */
599 int (*close_bchannel)(struct bc_state *bcs);
600
601 /* Called by gigaset_initcs() for setting up bcs->hw.xxx */
602 int (*initbcshw)(struct bc_state *bcs);
603
604 /* Called by gigaset_freecs() for freeing bcs->hw.xxx */
605 int (*freebcshw)(struct bc_state *bcs);
606
607 /* Called by gigaset_stop() or gigaset_bchannel_down() for resetting bcs->hw.xxx */
608 void (*reinitbcshw)(struct bc_state *bcs);
609
610 /* Called by gigaset_initcs() for setting up cs->hw.xxx */
611 int (*initcshw)(struct cardstate *cs);
612
613 /* Called by gigaset_freecs() for freeing cs->hw.xxx */
614 void (*freecshw)(struct cardstate *cs);
615
616 ///* Called by gigaset_stop() for killing URBs, shutting down the device, ...
617 // hardwareup: ==0: don't try to shut down the device, hardware is really not accessible
618 // !=0: hardware still up */
619 //void (*stophw)(struct cardstate *cs, int hardwareup);
620
621 /* Called from common.c/interface.c for additional serial port control */
622 int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state, unsigned new_state);
623 int (*baud_rate)(struct cardstate *cs, unsigned cflag);
624 int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag);
625
626 /* Called from i4l.c to put an skb into the send-queue. */
627 int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb);
628
629 /* Called from ev-layer.c to process a block of data
630 * received through the common/control channel. */
631 void (*handle_input)(struct inbuf_t *inbuf);
632
633};
634
635/* = Common structures and definitions ======================================= */
636
637/* Parser states for DLE-Event:
638 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
639 * <DLE_FLAG>: 0x10
640 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
641 */
642#define DLE_FLAG 0x10
643
644/* ===========================================================================
645 * Functions implemented in asyncdata.c
646 */
647
648/* Called from i4l.c to put an skb into the send-queue.
649 * After sending gigaset_skb_sent() should be called. */
650int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb);
651
652/* Called from ev-layer.c to process a block of data
653 * received through the common/control channel. */
654void gigaset_m10x_input(struct inbuf_t *inbuf);
655
656/* ===========================================================================
657 * Functions implemented in isocdata.c
658 */
659
660/* Called from i4l.c to put an skb into the send-queue.
661 * After sending gigaset_skb_sent() should be called. */
662int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb);
663
664/* Called from ev-layer.c to process a block of data
665 * received through the common/control channel. */
666void gigaset_isoc_input(struct inbuf_t *inbuf);
667
668/* Called from bas-gigaset.c to process a block of data
669 * received through the isochronous channel */
670void gigaset_isoc_receive(unsigned char *src, unsigned count, struct bc_state *bcs);
671
672/* Called from bas-gigaset.c to put a block of data
673 * into the isochronous output buffer */
674int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len);
675
676/* Called from bas-gigaset.c to initialize the isochronous output buffer */
677void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle);
678
679/* Called from bas-gigaset.c to retrieve a block of bytes for sending */
680int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size);
681
682/* ===========================================================================
683 * Functions implemented in i4l.c/gigaset.h
684 */
685
686/* Called by gigaset_initcs() for setting up with the isdn4linux subsystem */
687int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid);
688
689/* Called from xxx-gigaset.c to indicate completion of sending an skb */
690void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
691
692/* Called from common.c/ev-layer.c to indicate events relevant to the LL */
693int gigaset_isdn_icall(struct at_state_t *at_state);
694int gigaset_isdn_setup_accept(struct at_state_t *at_state);
695int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data);
696
697void gigaset_i4l_cmd(struct cardstate *cs, int cmd);
698void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd);
699
700
701static inline void gigaset_isdn_rcv_err(struct bc_state *bcs)
702{
703 isdn_ctrl response;
704
705 /* error -> LL */
706 dbg(DEBUG_CMD, "sending L1ERR");
707 response.driver = bcs->cs->myid;
708 response.command = ISDN_STAT_L1ERR;
709 response.arg = bcs->channel;
710 response.parm.errcode = ISDN_STAT_L1ERR_RECV;
711 bcs->cs->iif.statcallb(&response);
712}
713
714/* ===========================================================================
715 * Functions implemented in ev-layer.c
716 */
717
718/* tasklet called from common.c to process queued events */
719void gigaset_handle_event(unsigned long data);
720
721/* called from isocdata.c / asyncdata.c
722 * when a complete modem response line has been received */
723void gigaset_handle_modem_response(struct cardstate *cs);
724
725/* ===========================================================================
726 * Functions implemented in proc.c
727 */
728
729/* initialize sysfs for device */
730void gigaset_init_dev_sysfs(struct usb_interface *interface);
731void gigaset_free_dev_sysfs(struct usb_interface *interface);
732
733/* ===========================================================================
734 * Functions implemented in common.c/gigaset.h
735 */
736
737void gigaset_bcs_reinit(struct bc_state *bcs);
738void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
739 struct cardstate *cs, int cid);
740int gigaset_get_channel(struct bc_state *bcs);
741void gigaset_free_channel(struct bc_state *bcs);
742int gigaset_get_channels(struct cardstate *cs);
743void gigaset_free_channels(struct cardstate *cs);
744void gigaset_block_channels(struct cardstate *cs);
745
746/* Allocate and initialize driver structure. */
747struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
748 const char *procname,
749 const char *devname,
750 const char *devfsname,
751 const struct gigaset_ops *ops,
752 struct module *owner);
753
754/* Deallocate driver structure. */
755void gigaset_freedriver(struct gigaset_driver *drv);
756void gigaset_debugdrivers(void);
757struct cardstate *gigaset_get_cs_by_minor(unsigned minor);
758struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty);
759struct cardstate *gigaset_get_cs_by_id(int id);
760
761/* For drivers without fixed assignment device<->cardstate (usb) */
762struct cardstate *gigaset_getunassignedcs(struct gigaset_driver *drv);
763void gigaset_unassign(struct cardstate *cs);
764void gigaset_blockdriver(struct gigaset_driver *drv);
765
766/* Allocate and initialize card state. Calls hardware dependent gigaset_init[b]cs(). */
767struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
768 int onechannel, int ignoreframes,
769 int cidmode, const char *modulename);
770
771/* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
772void gigaset_freecs(struct cardstate *cs);
773
774/* Tell common.c that hardware and driver are ready. */
775int gigaset_start(struct cardstate *cs);
776
777/* Tell common.c that the device is not present any more. */
778void gigaset_stop(struct cardstate *cs);
779
780/* Tell common.c that the driver is being unloaded. */
781void gigaset_shutdown(struct cardstate *cs);
782
783/* Tell common.c that an skb has been sent. */
784void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
785
786/* Append event to the queue.
787 * Returns NULL on failure or a pointer to the event on success.
788 * ptr must be kmalloc()ed (and not be freed by the caller).
789 */
790struct event_t *gigaset_add_event(struct cardstate *cs,
791 struct at_state_t *at_state, int type,
792 void *ptr, int parameter, void *arg);
793
794/* Called on CONFIG1 command from frontend. */
795int gigaset_enterconfigmode(struct cardstate *cs); //0: success <0: errorcode
796
797/* cs->lock must not be locked */
798static inline void gigaset_schedule_event(struct cardstate *cs)
799{
800 unsigned long flags;
801 spin_lock_irqsave(&cs->lock, flags);
802 if (atomic_read(&cs->running))
803 tasklet_schedule(&cs->event_tasklet);
804 spin_unlock_irqrestore(&cs->lock, flags);
805}
806
807/* Tell common.c that B channel has been closed. */
808/* cs->lock must not be locked */
809static inline void gigaset_bchannel_down(struct bc_state *bcs)
810{
811 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL);
812
813 dbg(DEBUG_CMD, "scheduling BC_CLOSED");
814 gigaset_schedule_event(bcs->cs);
815}
816
817/* Tell common.c that B channel has been opened. */
818/* cs->lock must not be locked */
819static inline void gigaset_bchannel_up(struct bc_state *bcs)
820{
821 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL);
822
823 dbg(DEBUG_CMD, "scheduling BC_OPEN");
824 gigaset_schedule_event(bcs->cs);
825}
826
827/* handling routines for sk_buff */
828/* ============================= */
829
830/* private version of __skb_put()
831 * append 'len' bytes to the content of 'skb', already knowing that the
832 * existing buffer can accomodate them
833 * returns a pointer to the location where the new bytes should be copied to
834 * This function does not take any locks so it must be called with the
835 * appropriate locks held only.
836 */
837static inline unsigned char *gigaset_skb_put_quick(struct sk_buff *skb,
838 unsigned int len)
839{
840 unsigned char *tmp = skb->tail;
841 /*SKB_LINEAR_ASSERT(skb);*/ /* not needed here */
842 skb->tail += len;
843 skb->len += len;
844 return tmp;
845}
846
847/* pass received skb to LL
848 * Warning: skb must not be accessed anymore!
849 */
850static inline void gigaset_rcv_skb(struct sk_buff *skb,
851 struct cardstate *cs,
852 struct bc_state *bcs)
853{
854 cs->iif.rcvcallb_skb(cs->myid, bcs->channel, skb);
855 bcs->trans_down++;
856}
857
858/* handle reception of corrupted skb
859 * Warning: skb must not be accessed anymore!
860 */
861static inline void gigaset_rcv_error(struct sk_buff *procskb,
862 struct cardstate *cs,
863 struct bc_state *bcs)
864{
865 if (procskb)
866 dev_kfree_skb(procskb);
867
868 if (bcs->ignore)
869 --bcs->ignore;
870 else {
871 ++bcs->corrupted;
872 gigaset_isdn_rcv_err(bcs);
873 }
874}
875
876
877/* bitwise byte inversion table */
878extern __u8 gigaset_invtab[]; /* in common.c */
879
880
881/* append received bytes to inbuf */
882static inline int gigaset_fill_inbuf(struct inbuf_t *inbuf,
883 const unsigned char *src,
884 unsigned numbytes)
885{
886 unsigned n, head, tail, bytesleft;
887
888 dbg(DEBUG_INTR, "received %u bytes", numbytes);
889
890 if (!numbytes)
891 return 0;
892
893 bytesleft = numbytes;
894 tail = atomic_read(&inbuf->tail);
895 head = atomic_read(&inbuf->head);
896 dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail);
897
898 while (bytesleft) {
899 if (head > tail)
900 n = head - 1 - tail;
901 else if (head == 0)
902 n = (RBUFSIZE-1) - tail;
903 else
904 n = RBUFSIZE - tail;
905 if (!n) {
906 err("buffer overflow (%u bytes lost)", bytesleft);
907 break;
908 }
909 if (n > bytesleft)
910 n = bytesleft;
911 memcpy(inbuf->data + tail, src, n);
912 bytesleft -= n;
913 tail = (tail + n) % RBUFSIZE;
914 src += n;
915 }
916 dbg(DEBUG_INTR, "setting tail to %u", tail);
917 atomic_set(&inbuf->tail, tail);
918 return numbytes != bytesleft;
919}
920
921/* ===========================================================================
922 * Functions implemented in interface.c
923 */
924
925/* initialize interface */
926void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
927 const char *devname, const char *devfsname);
928/* release interface */
929void gigaset_if_freedriver(struct gigaset_driver *drv);
930/* add minor */
931void gigaset_if_init(struct cardstate *cs);
932/* remove minor */
933void gigaset_if_free(struct cardstate *cs);
934/* device received data */
935void gigaset_if_receive(struct cardstate *cs,
936 unsigned char *buffer, size_t len);
937
938#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-11 18:43:15 -0500