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authorHansjoerg Lipp <hjlipp@web.de>2006-03-26 04:38:29 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 11:57:05 -0500
commit6fd5ea63f85e30fda55b80939b4f379ea5db62b1 (patch)
treee1f3d46ccb136535b0e7a6818b394c1d57173a24 /drivers/isdn/gigaset
parent0a34eb8f55a71678c379b47c25f562050c80efcc (diff)
[PATCH] isdn4linux: Siemens Gigaset drivers - common module
And: Tilman Schmidt <tilman@imap.cc> This patch adds the common include file for the Siemens Gigaset drivers, providing definitions used by all of the Gigaset ISDN driver source files. It also adds the main source file of the gigaset module which manages common functions not specific to the type of connection to the device. Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <kkeil@suse.de> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/isdn/gigaset')
-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
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