]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/isdn/i4l/isdn_tty.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[net-next-2.6.git] / drivers / isdn / i4l / isdn_tty.c
CommitLineData
1da177e4
LT		 1/* $Id: isdn_tty.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $
2 *
3 * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
4 *
5 * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
6 * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
7 *
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
10 *
11 */
12#undef ISDN_TTY_STAT_DEBUG
13
1da177e4 14#include <linux/isdn.h>
5a0e3ad6 15#include <linux/slab.h>
1da177e4 16#include <linux/delay.h>
72250d44 17#include <linux/mutex.h>
1da177e4
LT		 18#include "isdn_common.h"
19#include "isdn_tty.h"
20#ifdef CONFIG_ISDN_AUDIO
21#include "isdn_audio.h"
22#define VBUF 0x3e0
23#define VBUFX (VBUF/16)
24#endif
25
26#define FIX_FILE_TRANSFER
27#define DUMMY_HAYES_AT
28
29/* Prototypes */
30
72250d44 31static DEFINE_MUTEX(modem_info_mutex);
1da177e4
LT		 32static int isdn_tty_edit_at(const char *, int, modem_info *);
33static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *);
34static void isdn_tty_modem_reset_regs(modem_info *, int);
35static void isdn_tty_cmd_ATA(modem_info *);
36static void isdn_tty_flush_buffer(struct tty_struct *);
37static void isdn_tty_modem_result(int, modem_info *);
38#ifdef CONFIG_ISDN_AUDIO
39static int isdn_tty_countDLE(unsigned char *, int);
40#endif
41
42/* Leave this unchanged unless you know what you do! */
43#define MODEM_PARANOIA_CHECK
44#define MODEM_DO_RESTART
45
46static int bit2si[8] =
47{1, 5, 7, 7, 7, 7, 7, 7};
48static int si2bit[8] =
49{4, 1, 4, 4, 4, 4, 4, 4};
50
51char *isdn_tty_revision = "$Revision: 1.1.2.3 $";
52
53
54/* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
55 * to stuff incoming data directly into a tty's flip-buffer. This
56 * is done to speed up tty-receiving if the receive-queue is empty.
57 * This routine MUST be called with interrupts off.
58 * Return:
59 * 1 = Success
60 * 0 = Failure, data has to be buffered and later processed by
61 * isdn_tty_readmodem().
62 */
63static int
64isdn_tty_try_read(modem_info * info, struct sk_buff *skb)
65{
66 int c;
67 int len;
68 struct tty_struct *tty;
33f0f88f 69 char last;
1da177e4
LT		 70
71 if (info->online) {
72 if ((tty = info->tty)) {
73 if (info->mcr & UART_MCR_RTS) {
1da177e4
LT		 74 len = skb->len
75#ifdef CONFIG_ISDN_AUDIO
76 + ISDN_AUDIO_SKB_DLECOUNT(skb)
77#endif
78 ;
33f0f88f
AC		 79
80 c = tty_buffer_request_room(tty, len);
1da177e4
LT		 81 if (c >= len) {
82#ifdef CONFIG_ISDN_AUDIO
33f0f88f
AC		 83 if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
84 int l = skb->len;
85 unsigned char *dp = skb->data;
86 while (--l) {
ca6f8792 87 if (*dp == DLE)
1da177e4 88 tty_insert_flip_char(tty, DLE, 0);
33f0f88f
AC		 89 tty_insert_flip_char(tty, *dp++, 0);
90 }
7fde4d77
MG		 91 if (*dp == DLE)
92 tty_insert_flip_char(tty, DLE, 0);
33f0f88f 93 last = *dp;
1da177e4
LT		 94 } else {
95#endif
33f0f88f
AC		 96 if(len > 1)
97 tty_insert_flip_string(tty, skb->data, len - 1);
98 last = skb->data[len - 1];
1da177e4
LT		 99#ifdef CONFIG_ISDN_AUDIO
100 }
101#endif
102 if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
33f0f88f
AC		 103 tty_insert_flip_char(tty, last, 0xFF);
104 else
105 tty_insert_flip_char(tty, last, TTY_NORMAL);
106 tty_flip_buffer_push(tty);
1da177e4
LT		 107 kfree_skb(skb);
108 return 1;
109 }
110 }
111 }
112 }
113 return 0;
114}
115
116/* isdn_tty_readmodem() is called periodically from within timer-interrupt.
117 * It tries getting received data from the receive queue an stuff it into
118 * the tty's flip-buffer.
119 */
120void
121isdn_tty_readmodem(void)
122{
123 int resched = 0;
124 int midx;
125 int i;
1da177e4
LT		 126 int r;
127 struct tty_struct *tty;
128 modem_info *info;
129
130 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
131 if ((midx = dev->m_idx[i]) >= 0) {
132 info = &dev->mdm.info[midx];
133 if (info->online) {
134 r = 0;
135#ifdef CONFIG_ISDN_AUDIO
136 isdn_audio_eval_dtmf(info);
137 if ((info->vonline & 1) && (info->emu.vpar[1]))
138 isdn_audio_eval_silence(info);
139#endif
140 if ((tty = info->tty)) {
141 if (info->mcr & UART_MCR_RTS) {
33f0f88f
AC		 142 /* CISCO AsyncPPP Hack */
143 if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
144 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
145 else
146 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
147 if (r)
148 tty_flip_buffer_push(tty);
1da177e4
LT		 149 } else
150 r = 1;
151 } else
152 r = 1;
153 if (r) {
154 info->rcvsched = 0;
155 resched = 1;
156 } else
157 info->rcvsched = 1;
158 }
159 }
160 }
161 if (!resched)
162 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
163}
164
165int
166isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
167{
168 ulong flags;
169 int midx;
170#ifdef CONFIG_ISDN_AUDIO
171 int ifmt;
172#endif
173 modem_info *info;
174
175 if ((midx = dev->m_idx[i]) < 0) {
176 /* if midx is invalid, packet is not for tty */
177 return 0;
178 }
179 info = &dev->mdm.info[midx];
180#ifdef CONFIG_ISDN_AUDIO
181 ifmt = 1;
182
183 if ((info->vonline) && (!info->emu.vpar[4]))
184 isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
185 if ((info->vonline & 1) && (info->emu.vpar[1]))
186 isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
187#endif
188 if ((info->online < 2)
189#ifdef CONFIG_ISDN_AUDIO
190 && (!(info->vonline & 1))
191#endif
192 ) {
193 /* If Modem not listening, drop data */
194 kfree_skb(skb);
195 return 1;
196 }
197 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
198 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
199 /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
200 if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
201 skb_pull(skb, 4);
202 else
203 if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
204 skb_pull(skb, 2);
205 } else
206 /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
207 if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
208 skb_pull(skb, 4);
209 }
210#ifdef CONFIG_ISDN_AUDIO
211 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
212 ISDN_AUDIO_SKB_LOCK(skb) = 0;
213 if (info->vonline & 1) {
214 /* voice conversion/compression */
215 switch (info->emu.vpar[3]) {
216 case 2:
217 case 3:
218 case 4:
219 /* adpcm
220 * Since compressed data takes less
221 * space, we can overwrite the buffer.
222 */
223 skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
224 ifmt,
225 skb->data,
226 skb->data,
227 skb->len));
228 break;
229 case 5:
230 /* a-law */
231 if (!ifmt)
232 isdn_audio_ulaw2alaw(skb->data, skb->len);
233 break;
234 case 6:
235 /* u-law */
236 if (ifmt)
237 isdn_audio_alaw2ulaw(skb->data, skb->len);
238 break;
239 }
240 ISDN_AUDIO_SKB_DLECOUNT(skb) =
241 isdn_tty_countDLE(skb->data, skb->len);
242 }
243#ifdef CONFIG_ISDN_TTY_FAX
244 else {
245 if (info->faxonline & 2) {
246 isdn_tty_fax_bitorder(info, skb);
247 ISDN_AUDIO_SKB_DLECOUNT(skb) =
248 isdn_tty_countDLE(skb->data, skb->len);
249 }
250 }
251#endif
252#endif
33f0f88f 253 /* Try to deliver directly via tty-buf if queue is empty */
1da177e4
LT		 254 spin_lock_irqsave(&info->readlock, flags);
255 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
256 if (isdn_tty_try_read(info, skb)) {
257 spin_unlock_irqrestore(&info->readlock, flags);
258 return 1;
259 }
260 /* Direct deliver failed or queue wasn't empty.
261 * Queue up for later dequeueing via timer-irq.
262 */
263 __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
264 dev->drv[di]->rcvcount[channel] +=
265 (skb->len
266#ifdef CONFIG_ISDN_AUDIO
267 + ISDN_AUDIO_SKB_DLECOUNT(skb)
268#endif
269 );
270 spin_unlock_irqrestore(&info->readlock, flags);
271 /* Schedule dequeuing */
272 if ((dev->modempoll) && (info->rcvsched))
273 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
274 return 1;
275}
276
3e206b0a 277static void
1da177e4
LT		 278isdn_tty_cleanup_xmit(modem_info * info)
279{
280 skb_queue_purge(&info->xmit_queue);
281#ifdef CONFIG_ISDN_AUDIO
282 skb_queue_purge(&info->dtmf_queue);
283#endif
284}
285
286static void
287isdn_tty_tint(modem_info * info)
288{
289 struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
290 int len, slen;
291
292 if (!skb)
293 return;
294 len = skb->len;
295 if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
296 info->isdn_channel, 1, skb)) == len) {
297 struct tty_struct *tty = info->tty;
298 info->send_outstanding++;
299 info->msr &= ~UART_MSR_CTS;
300 info->lsr &= ~UART_LSR_TEMT;
301 tty_wakeup(tty);
302 return;
303 }
304 if (slen < 0) {
305 /* Error: no channel, already shutdown, or wrong parameter */
306 dev_kfree_skb(skb);
307 return;
308 }
309 skb_queue_head(&info->xmit_queue, skb);
310}
311
312#ifdef CONFIG_ISDN_AUDIO
313static int
314isdn_tty_countDLE(unsigned char *buf, int len)
315{
316 int count = 0;
317
318 while (len--)
319 if (*buf++ == DLE)
320 count++;
321 return count;
322}
323
324/* This routine is called from within isdn_tty_write() to perform
325 * DLE-decoding when sending audio-data.
326 */
327static int
328isdn_tty_handleDLEdown(modem_info * info, atemu * m, int len)
329{
330 unsigned char *p = &info->xmit_buf[info->xmit_count];
331 int count = 0;
332
333 while (len > 0) {
334 if (m->lastDLE) {
335 m->lastDLE = 0;
336 switch (*p) {
337 case DLE:
338 /* Escape code */
339 if (len > 1)
340 memmove(p, p + 1, len - 1);
341 p--;
342 count++;
343 break;
344 case ETX:
345 /* End of data */
346 info->vonline |= 4;
347 return count;
348 case DC4:
349 /* Abort RX */
350 info->vonline &= ~1;
351#ifdef ISDN_DEBUG_MODEM_VOICE
352 printk(KERN_DEBUG
353 "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
354 info->line);
355#endif
356 isdn_tty_at_cout("\020\003", info);
357 if (!info->vonline) {
358#ifdef ISDN_DEBUG_MODEM_VOICE
359 printk(KERN_DEBUG
360 "DLEdown: send VCON on ttyI%d\n",
361 info->line);
362#endif
363 isdn_tty_at_cout("\r\nVCON\r\n", info);
364 }
365 /* Fall through */
366 case 'q':
367 case 's':
368 /* Silence */
369 if (len > 1)
370 memmove(p, p + 1, len - 1);
371 p--;
372 break;
373 }
374 } else {
375 if (*p == DLE)
376 m->lastDLE = 1;
377 else
378 count++;
379 }
380 p++;
381 len--;
382 }
383 if (len < 0) {
384 printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
385 return 0;
386 }
387 return count;
388}
389
390/* This routine is called from within isdn_tty_write() when receiving
391 * audio-data. It interrupts receiving, if an character other than
392 * ^S or ^Q is sent.
393 */
394static int
395isdn_tty_end_vrx(const char *buf, int c)
396{
397 char ch;
398
399 while (c--) {
400 ch = *buf;
401 if ((ch != 0x11) && (ch != 0x13))
402 return 1;
403 buf++;
404 }
405 return 0;
406}
407
408static int voice_cf[7] =
409{0, 0, 4, 3, 2, 0, 0};
410
411#endif /* CONFIG_ISDN_AUDIO */
412
413/* isdn_tty_senddown() is called either directly from within isdn_tty_write()
414 * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
415 * outgoing data from the tty's xmit-buffer, handles voice-decompression or
416 * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
417 */
418static void
419isdn_tty_senddown(modem_info * info)
420{
421 int buflen;
422 int skb_res;
423#ifdef CONFIG_ISDN_AUDIO
424 int audio_len;
425#endif
426 struct sk_buff *skb;
427
428#ifdef CONFIG_ISDN_AUDIO
429 if (info->vonline & 4) {
430 info->vonline &= ~6;
431 if (!info->vonline) {
432#ifdef ISDN_DEBUG_MODEM_VOICE
433 printk(KERN_DEBUG
434 "senddown: send VCON on ttyI%d\n",
435 info->line);
436#endif
437 isdn_tty_at_cout("\r\nVCON\r\n", info);
438 }
439 }
440#endif
441 if (!(buflen = info->xmit_count))
442 return;
443 if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
444 info->msr &= ~UART_MSR_CTS;
445 info->lsr &= ~UART_LSR_TEMT;
446 /* info->xmit_count is modified here and in isdn_tty_write().
447 * So we return here if isdn_tty_write() is in the
448 * critical section.
449 */
450 atomic_inc(&info->xmit_lock);
451 if (!(atomic_dec_and_test(&info->xmit_lock)))
452 return;
453 if (info->isdn_driver < 0) {
454 info->xmit_count = 0;
455 return;
456 }
457 skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
458#ifdef CONFIG_ISDN_AUDIO
459 if (info->vonline & 2)
460 audio_len = buflen * voice_cf[info->emu.vpar[3]];
461 else
462 audio_len = 0;
463 skb = dev_alloc_skb(skb_res + buflen + audio_len);
464#else
465 skb = dev_alloc_skb(skb_res + buflen);
466#endif
467 if (!skb) {
468 printk(KERN_WARNING
469 "isdn_tty: Out of memory in ttyI%d senddown\n",
470 info->line);
471 return;
472 }
473 skb_reserve(skb, skb_res);
474 memcpy(skb_put(skb, buflen), info->xmit_buf, buflen);
475 info->xmit_count = 0;
476#ifdef CONFIG_ISDN_AUDIO
477 if (info->vonline & 2) {
478 /* For now, ifmt is fixed to 1 (alaw), since this
479 * is used with ISDN everywhere in the world, except
480 * US, Canada and Japan.
481 * Later, when US-ISDN protocols are implemented,
482 * this setting will depend on the D-channel protocol.
483 */
484 int ifmt = 1;
485
486 /* voice conversion/decompression */
487 switch (info->emu.vpar[3]) {
488 case 2:
489 case 3:
490 case 4:
491 /* adpcm, compatible to ZyXel 1496 modem
492 * with ROM revision 6.01
493 */
494 audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
495 ifmt,
496 skb->data,
497 skb_put(skb, audio_len),
498 buflen);
499 skb_pull(skb, buflen);
500 skb_trim(skb, audio_len);
501 break;
502 case 5:
503 /* a-law */
504 if (!ifmt)
505 isdn_audio_alaw2ulaw(skb->data,
506 buflen);
507 break;
508 case 6:
509 /* u-law */
510 if (ifmt)
511 isdn_audio_ulaw2alaw(skb->data,
512 buflen);
513 break;
514 }
515 }
516#endif /* CONFIG_ISDN_AUDIO */
517 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
518 /* Add T.70 simplified header */
519 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT)
520 memcpy(skb_push(skb, 2), "\1\0", 2);
521 else
522 memcpy(skb_push(skb, 4), "\1\0\1\0", 4);
523 }
524 skb_queue_tail(&info->xmit_queue, skb);
525}
526
527/************************************************************
528 *
529 * Modem-functions
530 *
531 * mostly "stolen" from original Linux-serial.c and friends.
532 *
533 ************************************************************/
534
535/* The next routine is called once from within timer-interrupt
536 * triggered within isdn_tty_modem_ncarrier(). It calls
537 * isdn_tty_modem_result() to stuff a "NO CARRIER" Message
33f0f88f 538 * into the tty's buffer.
1da177e4
LT		 539 */
540static void
541isdn_tty_modem_do_ncarrier(unsigned long data)
542{
543 modem_info *info = (modem_info *) data;
544 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
545}
546
547/* Next routine is called, whenever the DTR-signal is raised.
548 * It checks the ncarrier-flag, and triggers the above routine
549 * when necessary. The ncarrier-flag is set, whenever DTR goes
550 * low.
551 */
552static void
553isdn_tty_modem_ncarrier(modem_info * info)
554{
555 if (info->ncarrier) {
556 info->nc_timer.expires = jiffies + HZ;
557 add_timer(&info->nc_timer);
558 }
559}
560
561/*
562 * return the usage calculated by si and layer 2 protocol
563 */
3e206b0a 564static int
1da177e4
LT		 565isdn_calc_usage(int si, int l2)
566{
567 int usg = ISDN_USAGE_MODEM;
568
569#ifdef CONFIG_ISDN_AUDIO
570 if (si == 1) {
571 switch(l2) {
572 case ISDN_PROTO_L2_MODEM:
573 usg = ISDN_USAGE_MODEM;
574 break;
575#ifdef CONFIG_ISDN_TTY_FAX
576 case ISDN_PROTO_L2_FAX:
577 usg = ISDN_USAGE_FAX;
578 break;
579#endif
580 case ISDN_PROTO_L2_TRANS:
581 default:
582 usg = ISDN_USAGE_VOICE;
583 break;
584 }
585 }
586#endif
587 return(usg);
588}
589
590/* isdn_tty_dial() performs dialing of a tty an the necessary
591 * setup of the lower levels before that.
592 */
593static void
594isdn_tty_dial(char *n, modem_info * info, atemu * m)
595{
596 int usg = ISDN_USAGE_MODEM;
597 int si = 7;
598 int l2 = m->mdmreg[REG_L2PROT];
599 u_long flags;
600 isdn_ctrl cmd;
601 int i;
602 int j;
603
604 for (j = 7; j >= 0; j--)
605 if (m->mdmreg[REG_SI1] & (1 << j)) {
606 si = bit2si[j];
607 break;
608 }
609 usg = isdn_calc_usage(si, l2);
610#ifdef CONFIG_ISDN_AUDIO
611 if ((si == 1) &&
612 (l2 != ISDN_PROTO_L2_MODEM)
613#ifdef CONFIG_ISDN_TTY_FAX
614 && (l2 != ISDN_PROTO_L2_FAX)
615#endif
616 ) {
617 l2 = ISDN_PROTO_L2_TRANS;
618 usg = ISDN_USAGE_VOICE;
619 }
620#endif
621 m->mdmreg[REG_SI1I] = si2bit[si];
622 spin_lock_irqsave(&dev->lock, flags);
623 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
624 if (i < 0) {
625 spin_unlock_irqrestore(&dev->lock, flags);
626 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
627 } else {
628 info->isdn_driver = dev->drvmap[i];
629 info->isdn_channel = dev->chanmap[i];
630 info->drv_index = i;
631 dev->m_idx[i] = info->line;
632 dev->usage[i] |= ISDN_USAGE_OUTGOING;
633 info->last_dir = 1;
634 strcpy(info->last_num, n);
635 isdn_info_update();
636 spin_unlock_irqrestore(&dev->lock, flags);
637 cmd.driver = info->isdn_driver;
638 cmd.arg = info->isdn_channel;
639 cmd.command = ISDN_CMD_CLREAZ;
640 isdn_command(&cmd);
641 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
642 cmd.driver = info->isdn_driver;
643 cmd.command = ISDN_CMD_SETEAZ;
644 isdn_command(&cmd);
645 cmd.driver = info->isdn_driver;
646 cmd.command = ISDN_CMD_SETL2;
647 info->last_l2 = l2;
648 cmd.arg = info->isdn_channel + (l2 << 8);
649 isdn_command(&cmd);
650 cmd.driver = info->isdn_driver;
651 cmd.command = ISDN_CMD_SETL3;
652 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
653#ifdef CONFIG_ISDN_TTY_FAX
654 if (l2 == ISDN_PROTO_L2_FAX) {
655 cmd.parm.fax = info->fax;
656 info->fax->direction = ISDN_TTY_FAX_CONN_OUT;
657 }
658#endif
659 isdn_command(&cmd);
660 cmd.driver = info->isdn_driver;
661 cmd.arg = info->isdn_channel;
662 sprintf(cmd.parm.setup.phone, "%s", n);
663 sprintf(cmd.parm.setup.eazmsn, "%s",
664 isdn_map_eaz2msn(m->msn, info->isdn_driver));
665 cmd.parm.setup.si1 = si;
666 cmd.parm.setup.si2 = m->mdmreg[REG_SI2];
667 cmd.command = ISDN_CMD_DIAL;
668 info->dialing = 1;
669 info->emu.carrierwait = 0;
670 strcpy(dev->num[i], n);
671 isdn_info_update();
672 isdn_command(&cmd);
673 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
674 }
675}
676
677/* isdn_tty_hangup() disassociates a tty from the real
678 * ISDN-line (hangup). The usage-status is cleared
679 * and some cleanup is done also.
680 */
681void
682isdn_tty_modem_hup(modem_info * info, int local)
683{
684 isdn_ctrl cmd;
685 int di, ch;
686
687 if (!info)
688 return;
689
690 di = info->isdn_driver;
691 ch = info->isdn_channel;
692 if (di < 0 || ch < 0)
693 return;
694
695 info->isdn_driver = -1;
696 info->isdn_channel = -1;
697
698#ifdef ISDN_DEBUG_MODEM_HUP
699 printk(KERN_DEBUG "Mhup ttyI%d\n", info->line);
700#endif
701 info->rcvsched = 0;
702 isdn_tty_flush_buffer(info->tty);
703 if (info->online) {
704 info->last_lhup = local;
705 info->online = 0;
706 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
707 }
708#ifdef CONFIG_ISDN_AUDIO
709 info->vonline = 0;
710#ifdef CONFIG_ISDN_TTY_FAX
711 info->faxonline = 0;
712 info->fax->phase = ISDN_FAX_PHASE_IDLE;
713#endif
714 info->emu.vpar[4] = 0;
715 info->emu.vpar[5] = 8;
3c7208f2
JJ		 716 kfree(info->dtmf_state);
717 info->dtmf_state = NULL;
718 kfree(info->silence_state);
719 info->silence_state = NULL;
720 kfree(info->adpcms);
721 info->adpcms = NULL;
722 kfree(info->adpcmr);
723 info->adpcmr = NULL;
1da177e4
LT		 724#endif
725 if ((info->msr & UART_MSR_RI) &&
726 (info->emu.mdmreg[REG_RUNG] & BIT_RUNG))
727 isdn_tty_modem_result(RESULT_RUNG, info);
728 info->msr &= ~(UART_MSR_DCD | UART_MSR_RI);
729 info->lsr |= UART_LSR_TEMT;
730
731 if (local) {
732 cmd.driver = di;
733 cmd.command = ISDN_CMD_HANGUP;
734 cmd.arg = ch;
735 isdn_command(&cmd);
736 }
737
738 isdn_all_eaz(di, ch);
739 info->emu.mdmreg[REG_RINGCNT] = 0;
740 isdn_free_channel(di, ch, 0);
741
742 if (info->drv_index >= 0) {
743 dev->m_idx[info->drv_index] = -1;
744 info->drv_index = -1;
745 }
746}
747
748/*
749 * Begin of a CAPI like interface, currently used only for
750 * supplementary service (CAPI 2.0 part III)
751 */
752#include <linux/isdn/capicmd.h>
753
754int
755isdn_tty_capi_facility(capi_msg *cm) {
756 return(-1); /* dummy */
757}
758
759/* isdn_tty_suspend() tries to suspend the current tty connection
760 */
761static void
762isdn_tty_suspend(char *id, modem_info * info, atemu * m)
763{
764 isdn_ctrl cmd;
765
766 int l;
767
768 if (!info)
769 return;
770
771#ifdef ISDN_DEBUG_MODEM_SERVICES
772 printk(KERN_DEBUG "Msusp ttyI%d\n", info->line);
773#endif
774 l = strlen(id);
775 if ((info->isdn_driver >= 0)) {
776 cmd.parm.cmsg.Length = l+18;
777 cmd.parm.cmsg.Command = CAPI_FACILITY;
778 cmd.parm.cmsg.Subcommand = CAPI_REQ;
779 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
780 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
781 cmd.parm.cmsg.para[1] = 0;
782 cmd.parm.cmsg.para[2] = l + 3;
783 cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */
784 cmd.parm.cmsg.para[4] = 0;
785 cmd.parm.cmsg.para[5] = l;
786 strncpy(&cmd.parm.cmsg.para[6], id, l);
787 cmd.command = CAPI_PUT_MESSAGE;
788 cmd.driver = info->isdn_driver;
789 cmd.arg = info->isdn_channel;
790 isdn_command(&cmd);
791 }
792}
793
794/* isdn_tty_resume() tries to resume a suspended call
795 * setup of the lower levels before that. unfortunatly here is no
796 * checking for compatibility of used protocols implemented by Q931
797 * It does the same things like isdn_tty_dial, the last command
798 * is different, may be we can merge it.
799 */
800
801static void
802isdn_tty_resume(char *id, modem_info * info, atemu * m)
803{
804 int usg = ISDN_USAGE_MODEM;
805 int si = 7;
806 int l2 = m->mdmreg[REG_L2PROT];
807 isdn_ctrl cmd;
808 ulong flags;
809 int i;
810 int j;
811 int l;
812
813 l = strlen(id);
814 for (j = 7; j >= 0; j--)
815 if (m->mdmreg[REG_SI1] & (1 << j)) {
816 si = bit2si[j];
817 break;
818 }
819 usg = isdn_calc_usage(si, l2);
820#ifdef CONFIG_ISDN_AUDIO
821 if ((si == 1) &&
822 (l2 != ISDN_PROTO_L2_MODEM)
823#ifdef CONFIG_ISDN_TTY_FAX
824 && (l2 != ISDN_PROTO_L2_FAX)
825#endif
826 ) {
827 l2 = ISDN_PROTO_L2_TRANS;
828 usg = ISDN_USAGE_VOICE;
829 }
830#endif
831 m->mdmreg[REG_SI1I] = si2bit[si];
832 spin_lock_irqsave(&dev->lock, flags);
833 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
834 if (i < 0) {
835 spin_unlock_irqrestore(&dev->lock, flags);
836 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
837 } else {
838 info->isdn_driver = dev->drvmap[i];
839 info->isdn_channel = dev->chanmap[i];
840 info->drv_index = i;
841 dev->m_idx[i] = info->line;
842 dev->usage[i] |= ISDN_USAGE_OUTGOING;
843 info->last_dir = 1;
844// strcpy(info->last_num, n);
845 isdn_info_update();
846 spin_unlock_irqrestore(&dev->lock, flags);
847 cmd.driver = info->isdn_driver;
848 cmd.arg = info->isdn_channel;
849 cmd.command = ISDN_CMD_CLREAZ;
850 isdn_command(&cmd);
851 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
852 cmd.driver = info->isdn_driver;
853 cmd.command = ISDN_CMD_SETEAZ;
854 isdn_command(&cmd);
855 cmd.driver = info->isdn_driver;
856 cmd.command = ISDN_CMD_SETL2;
857 info->last_l2 = l2;
858 cmd.arg = info->isdn_channel + (l2 << 8);
859 isdn_command(&cmd);
860 cmd.driver = info->isdn_driver;
861 cmd.command = ISDN_CMD_SETL3;
862 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
863 isdn_command(&cmd);
864 cmd.driver = info->isdn_driver;
865 cmd.arg = info->isdn_channel;
866 cmd.parm.cmsg.Length = l+18;
867 cmd.parm.cmsg.Command = CAPI_FACILITY;
868 cmd.parm.cmsg.Subcommand = CAPI_REQ;
869 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
870 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
871 cmd.parm.cmsg.para[1] = 0;
872 cmd.parm.cmsg.para[2] = l+3;
873 cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */
874 cmd.parm.cmsg.para[4] = 0;
875 cmd.parm.cmsg.para[5] = l;
876 strncpy(&cmd.parm.cmsg.para[6], id, l);
877 cmd.command =CAPI_PUT_MESSAGE;
878 info->dialing = 1;
879// strcpy(dev->num[i], n);
880 isdn_info_update();
881 isdn_command(&cmd);
882 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
883 }
884}
885
886/* isdn_tty_send_msg() sends a message to a HL driver
887 * This is used for hybrid modem cards to send AT commands to it
888 */
889
890static void
891isdn_tty_send_msg(modem_info * info, atemu * m, char *msg)
892{
893 int usg = ISDN_USAGE_MODEM;
894 int si = 7;
895 int l2 = m->mdmreg[REG_L2PROT];
896 isdn_ctrl cmd;
897 ulong flags;
898 int i;
899 int j;
900 int l;
901
902 l = strlen(msg);
903 if (!l) {
904 isdn_tty_modem_result(RESULT_ERROR, info);
905 return;
906 }
907 for (j = 7; j >= 0; j--)
908 if (m->mdmreg[REG_SI1] & (1 << j)) {
909 si = bit2si[j];
910 break;
911 }
912 usg = isdn_calc_usage(si, l2);
913#ifdef CONFIG_ISDN_AUDIO
914 if ((si == 1) &&
915 (l2 != ISDN_PROTO_L2_MODEM)
916#ifdef CONFIG_ISDN_TTY_FAX
917 && (l2 != ISDN_PROTO_L2_FAX)
918#endif
919 ) {
920 l2 = ISDN_PROTO_L2_TRANS;
921 usg = ISDN_USAGE_VOICE;
922 }
923#endif
924 m->mdmreg[REG_SI1I] = si2bit[si];
925 spin_lock_irqsave(&dev->lock, flags);
926 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
927 if (i < 0) {
928 spin_unlock_irqrestore(&dev->lock, flags);
929 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
930 } else {
931 info->isdn_driver = dev->drvmap[i];
932 info->isdn_channel = dev->chanmap[i];
933 info->drv_index = i;
934 dev->m_idx[i] = info->line;
935 dev->usage[i] |= ISDN_USAGE_OUTGOING;
936 info->last_dir = 1;
937 isdn_info_update();
938 spin_unlock_irqrestore(&dev->lock, flags);
939 cmd.driver = info->isdn_driver;
940 cmd.arg = info->isdn_channel;
941 cmd.command = ISDN_CMD_CLREAZ;
942 isdn_command(&cmd);
943 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
944 cmd.driver = info->isdn_driver;
945 cmd.command = ISDN_CMD_SETEAZ;
946 isdn_command(&cmd);
947 cmd.driver = info->isdn_driver;
948 cmd.command = ISDN_CMD_SETL2;
949 info->last_l2 = l2;
950 cmd.arg = info->isdn_channel + (l2 << 8);
951 isdn_command(&cmd);
952 cmd.driver = info->isdn_driver;
953 cmd.command = ISDN_CMD_SETL3;
954 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
955 isdn_command(&cmd);
956 cmd.driver = info->isdn_driver;
957 cmd.arg = info->isdn_channel;
958 cmd.parm.cmsg.Length = l+14;
959 cmd.parm.cmsg.Command = CAPI_MANUFACTURER;
960 cmd.parm.cmsg.Subcommand = CAPI_REQ;
961 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
962 cmd.parm.cmsg.para[0] = l+1;
963 strncpy(&cmd.parm.cmsg.para[1], msg, l);
964 cmd.parm.cmsg.para[l+1] = 0xd;
965 cmd.command =CAPI_PUT_MESSAGE;
966/* info->dialing = 1;
967 strcpy(dev->num[i], n);
968 isdn_info_update();
969*/
970 isdn_command(&cmd);
971 }
972}
973
974static inline int
975isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine)
976{
977#ifdef MODEM_PARANOIA_CHECK
978 if (!info) {
979 printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n",
980 name, routine);
981 return 1;
982 }
983 if (info->magic != ISDN_ASYNC_MAGIC) {
984 printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n",
985 name, routine);
986 return 1;
987 }
988#endif
989 return 0;
990}
991
992/*
993 * This routine is called to set the UART divisor registers to match
994 * the specified baud rate for a serial port.
995 */
996static void
997isdn_tty_change_speed(modem_info * info)
998{
999 uint cflag,
1000 cval,
1001 fcr,
1002 quot;
1003 int i;
1004
1005 if (!info->tty || !info->tty->termios)
1006 return;
1007 cflag = info->tty->termios->c_cflag;
1008
1009 quot = i = cflag & CBAUD;
1010 if (i & CBAUDEX) {
1011 i &= ~CBAUDEX;
1012 if (i < 1 || i > 2)
1013 info->tty->termios->c_cflag &= ~CBAUDEX;
1014 else
1015 i += 15;
1016 }
1017 if (quot) {
1018 info->mcr |= UART_MCR_DTR;
1019 isdn_tty_modem_ncarrier(info);
1020 } else {
1021 info->mcr &= ~UART_MCR_DTR;
1022 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1023#ifdef ISDN_DEBUG_MODEM_HUP
1024 printk(KERN_DEBUG "Mhup in changespeed\n");
1025#endif
1026 if (info->online)
1027 info->ncarrier = 1;
1028 isdn_tty_modem_reset_regs(info, 0);
1029 isdn_tty_modem_hup(info, 1);
1030 }
1031 return;
1032 }
1033 /* byte size and parity */
1034 cval = cflag & (CSIZE | CSTOPB);
1035 cval >>= 4;
1036 if (cflag & PARENB)
1037 cval |= UART_LCR_PARITY;
1038 if (!(cflag & PARODD))
1039 cval |= UART_LCR_EPAR;
1040 fcr = 0;
1041
1042 /* CTS flow control flag and modem status interrupts */
1043 if (cflag & CRTSCTS) {
1044 info->flags |= ISDN_ASYNC_CTS_FLOW;
1045 } else
1046 info->flags &= ~ISDN_ASYNC_CTS_FLOW;
1047 if (cflag & CLOCAL)
1048 info->flags &= ~ISDN_ASYNC_CHECK_CD;
1049 else {
1050 info->flags |= ISDN_ASYNC_CHECK_CD;
1051 }
1052}
1053
1054static int
1055isdn_tty_startup(modem_info * info)
1056{
1057 if (info->flags & ISDN_ASYNC_INITIALIZED)
1058 return 0;
1059 isdn_lock_drivers();
1060#ifdef ISDN_DEBUG_MODEM_OPEN
1061 printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line);
1062#endif
1063 /*
1064 * Now, initialize the UART
1065 */
1066 info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
1067 if (info->tty)
1068 clear_bit(TTY_IO_ERROR, &info->tty->flags);
1069 /*
1070 * and set the speed of the serial port
1071 */
1072 isdn_tty_change_speed(info);
1073
1074 info->flags |= ISDN_ASYNC_INITIALIZED;
1075 info->msr |= (UART_MSR_DSR | UART_MSR_CTS);
1076 info->send_outstanding = 0;
1077 return 0;
1078}
1079
1080/*
1081 * This routine will shutdown a serial port; interrupts are disabled, and
1082 * DTR is dropped if the hangup on close termio flag is on.
1083 */
1084static void
1085isdn_tty_shutdown(modem_info * info)
1086{
1087 if (!(info->flags & ISDN_ASYNC_INITIALIZED))
1088 return;
1089#ifdef ISDN_DEBUG_MODEM_OPEN
1090 printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line);
1091#endif
1092 isdn_unlock_drivers();
1093 info->msr &= ~UART_MSR_RI;
1094 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
1095 info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
1096 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1097 isdn_tty_modem_reset_regs(info, 0);
1098#ifdef ISDN_DEBUG_MODEM_HUP
1099 printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n");
1100#endif
1101 isdn_tty_modem_hup(info, 1);
1102 }
1103 }
1104 if (info->tty)
1105 set_bit(TTY_IO_ERROR, &info->tty->flags);
1106
1107 info->flags &= ~ISDN_ASYNC_INITIALIZED;
1108}
1109
1110/* isdn_tty_write() is the main send-routine. It is called from the upper
1111 * levels within the kernel to perform sending data. Depending on the
1112 * online-flag it either directs output to the at-command-interpreter or
1113 * to the lower level. Additional tasks done here:
1114 * - If online, check for escape-sequence (+++)
1115 * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes.
1116 * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed.
1117 * - If dialing, abort dial.
1118 */
1119static int
1120isdn_tty_write(struct tty_struct *tty, const u_char * buf, int count)
1121{
1122 int c;
1123 int total = 0;
1124 modem_info *info = (modem_info *) tty->driver_data;
1125 atemu *m = &info->emu;
1126
1127 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write"))
1128 return 0;
1129 /* See isdn_tty_senddown() */
1130 atomic_inc(&info->xmit_lock);
1131 while (1) {
1132 c = count;
1133 if (c > info->xmit_size - info->xmit_count)
1134 c = info->xmit_size - info->xmit_count;
1135 if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize)
1136 c = dev->drv[info->isdn_driver]->maxbufsize;
1137 if (c <= 0)
1138 break;
1139 if ((info->online > 1)
1140#ifdef CONFIG_ISDN_AUDIO
1141 || (info->vonline & 3)
1142#endif
1143 ) {
1144#ifdef CONFIG_ISDN_AUDIO
1145 if (!info->vonline)
1146#endif
1147 isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c,
1148 &(m->pluscount),
1149 &(m->lastplus));
1150 memcpy(&(info->xmit_buf[info->xmit_count]), buf, c);
1151#ifdef CONFIG_ISDN_AUDIO
1152 if (info->vonline) {
1153 int cc = isdn_tty_handleDLEdown(info, m, c);
1154 if (info->vonline & 2) {
1155 if (!cc) {
1156 /* If DLE decoding results in zero-transmit, but
1157 * c originally was non-zero, do a wakeup.
1158 */
1159 tty_wakeup(tty);
1160 info->msr |= UART_MSR_CTS;
1161 info->lsr |= UART_LSR_TEMT;
1162 }
1163 info->xmit_count += cc;
1164 }
1165 if ((info->vonline & 3) == 1) {
1166 /* Do NOT handle Ctrl-Q or Ctrl-S
1167 * when in full-duplex audio mode.
1168 */
1169 if (isdn_tty_end_vrx(buf, c)) {
1170 info->vonline &= ~1;
1171#ifdef ISDN_DEBUG_MODEM_VOICE
1172 printk(KERN_DEBUG
1173 "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n",
1174 info->line);
1175#endif
1176 isdn_tty_at_cout("\020\003\r\nVCON\r\n", info);
1177 }
1178 }
1179 } else
1180 if (TTY_IS_FCLASS1(info)) {
1181 int cc = isdn_tty_handleDLEdown(info, m, c);
1182
1183 if (info->vonline & 4) { /* ETX seen */
1184 isdn_ctrl c;
1185
1186 c.command = ISDN_CMD_FAXCMD;
1187 c.driver = info->isdn_driver;
1188 c.arg = info->isdn_channel;
1189 c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL;
1190 c.parm.aux.subcmd = ETX;
1191 isdn_command(&c);
1192 }
1193 info->vonline = 0;
1194#ifdef ISDN_DEBUG_MODEM_VOICE
1195 printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c);
1196#endif
1197 info->xmit_count += cc;
1198 } else
1199#endif
1200 info->xmit_count += c;
1201 } else {
1202 info->msr |= UART_MSR_CTS;
1203 info->lsr |= UART_LSR_TEMT;
1204 if (info->dialing) {
1205 info->dialing = 0;
1206#ifdef ISDN_DEBUG_MODEM_HUP
1207 printk(KERN_DEBUG "Mhup in isdn_tty_write\n");
1208#endif
1209 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
1210 isdn_tty_modem_hup(info, 1);
1211 } else
1212 c = isdn_tty_edit_at(buf, c, info);
1213 }
1214 buf += c;
1215 count -= c;
1216 total += c;
1217 }
1218 atomic_dec(&info->xmit_lock);
b03efcfb 1219 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
1da177e4
LT		 1220 if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
1221 isdn_tty_senddown(info);
1222 isdn_tty_tint(info);
1223 }
1224 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1225 }
1226 return total;
1227}
1228
1229static int
1230isdn_tty_write_room(struct tty_struct *tty)
1231{
1232 modem_info *info = (modem_info *) tty->driver_data;
1233 int ret;
1234
1235 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room"))
1236 return 0;
1237 if (!info->online)
1238 return info->xmit_size;
1239 ret = info->xmit_size - info->xmit_count;
1240 return (ret < 0) ? 0 : ret;
1241}
1242
1243static int
1244isdn_tty_chars_in_buffer(struct tty_struct *tty)
1245{
1246 modem_info *info = (modem_info *) tty->driver_data;
1247
1248 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer"))
1249 return 0;
1250 if (!info->online)
1251 return 0;
1252 return (info->xmit_count);
1253}
1254
1255static void
1256isdn_tty_flush_buffer(struct tty_struct *tty)
1257{
1258 modem_info *info;
1259
1260 if (!tty) {
1261 return;
1262 }
1263 info = (modem_info *) tty->driver_data;
1264 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) {
1265 return;
1266 }
1267 isdn_tty_cleanup_xmit(info);
1268 info->xmit_count = 0;
1da177e4
LT		 1269 tty_wakeup(tty);
1270}
1271
1272static void
1273isdn_tty_flush_chars(struct tty_struct *tty)
1274{
1275 modem_info *info = (modem_info *) tty->driver_data;
1276
1277 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
1278 return;
b03efcfb 1279 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
1da177e4
LT		 1280 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1281}
1282
1283/*
1284 * ------------------------------------------------------------
1285 * isdn_tty_throttle()
1286 *
1287 * This routine is called by the upper-layer tty layer to signal that
1288 * incoming characters should be throttled.
1289 * ------------------------------------------------------------
1290 */
1291static void
1292isdn_tty_throttle(struct tty_struct *tty)
1293{
1294 modem_info *info = (modem_info *) tty->driver_data;
1295
1296 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle"))
1297 return;
1298 if (I_IXOFF(tty))
1299 info->x_char = STOP_CHAR(tty);
1300 info->mcr &= ~UART_MCR_RTS;
1301}
1302
1303static void
1304isdn_tty_unthrottle(struct tty_struct *tty)
1305{
1306 modem_info *info = (modem_info *) tty->driver_data;
1307
1308 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle"))
1309 return;
1310 if (I_IXOFF(tty)) {
1311 if (info->x_char)
1312 info->x_char = 0;
1313 else
1314 info->x_char = START_CHAR(tty);
1315 }
1316 info->mcr |= UART_MCR_RTS;
1317}
1318
1319/*
1320 * ------------------------------------------------------------
1321 * isdn_tty_ioctl() and friends
1322 * ------------------------------------------------------------
1323 */
1324
1325/*
1326 * isdn_tty_get_lsr_info - get line status register info
1327 *
1328 * Purpose: Let user call ioctl() to get info when the UART physically
1329 * is emptied. On bus types like RS485, the transmitter must
1330 * release the bus after transmitting. This must be done when
1331 * the transmit shift register is empty, not be done when the
1332 * transmit holding register is empty. This functionality
1333 * allows RS485 driver to be written in user space.
1334 */
1335static int
1336isdn_tty_get_lsr_info(modem_info * info, uint __user * value)
1337{
1338 u_char status;
1339 uint result;
1340
1341 status = info->lsr;
1342 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1343 return put_user(result, value);
1344}
1345
1346
1347static int
1348isdn_tty_tiocmget(struct tty_struct *tty, struct file *file)
1349{
1350 modem_info *info = (modem_info *) tty->driver_data;
1351 u_char control, status;
1352
156f1ed6 1353 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1da177e4
LT		 1354 return -ENODEV;
1355 if (tty->flags & (1 << TTY_IO_ERROR))
1356 return -EIO;
1357
72250d44 1358 mutex_lock(&modem_info_mutex);
1da177e4
LT		 1359#ifdef ISDN_DEBUG_MODEM_IOCTL
1360 printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
1361#endif
1362
1363 control = info->mcr;
1364 status = info->msr;
72250d44 1365 mutex_unlock(&modem_info_mutex);
1da177e4
LT		 1366 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
1367 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
1368 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
1369 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
1370 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
1371 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1372}
1373
1374static int
1375isdn_tty_tiocmset(struct tty_struct *tty, struct file *file,
1376 unsigned int set, unsigned int clear)
1377{
1378 modem_info *info = (modem_info *) tty->driver_data;
1379
156f1ed6 1380 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1da177e4
LT		 1381 return -ENODEV;
1382 if (tty->flags & (1 << TTY_IO_ERROR))
1383 return -EIO;
1384
1385#ifdef ISDN_DEBUG_MODEM_IOCTL
1386 printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
1387#endif
1388
72250d44 1389 mutex_lock(&modem_info_mutex);
1da177e4
LT		 1390 if (set & TIOCM_RTS)
1391 info->mcr |= UART_MCR_RTS;
1392 if (set & TIOCM_DTR) {
1393 info->mcr |= UART_MCR_DTR;
1394 isdn_tty_modem_ncarrier(info);
1395 }
1396
1397 if (clear & TIOCM_RTS)
1398 info->mcr &= ~UART_MCR_RTS;
1399 if (clear & TIOCM_DTR) {
1400 info->mcr &= ~UART_MCR_DTR;
1401 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1402 isdn_tty_modem_reset_regs(info, 0);
1403#ifdef ISDN_DEBUG_MODEM_HUP
1404 printk(KERN_DEBUG "Mhup in TIOCMSET\n");
1405#endif
1406 if (info->online)
1407 info->ncarrier = 1;
1408 isdn_tty_modem_hup(info, 1);
1409 }
1410 }
72250d44 1411 mutex_unlock(&modem_info_mutex);
1da177e4
LT		 1412 return 0;
1413}
1414
1415static int
1416isdn_tty_ioctl(struct tty_struct *tty, struct file *file,
1417 uint cmd, ulong arg)
1418{
1419 modem_info *info = (modem_info *) tty->driver_data;
1420 int retval;
1421
1422 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
1423 return -ENODEV;
1424 if (tty->flags & (1 << TTY_IO_ERROR))
1425 return -EIO;
1426 switch (cmd) {
1427 case TCSBRK: /* SVID version: non-zero arg --> no break */
1428#ifdef ISDN_DEBUG_MODEM_IOCTL
1429 printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
1430#endif
1431 retval = tty_check_change(tty);
1432 if (retval)
1433 return retval;
1434 tty_wait_until_sent(tty, 0);
1435 return 0;
1436 case TCSBRKP: /* support for POSIX tcsendbreak() */
1437#ifdef ISDN_DEBUG_MODEM_IOCTL
1438 printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
1439#endif
1440 retval = tty_check_change(tty);
1441 if (retval)
1442 return retval;
1443 tty_wait_until_sent(tty, 0);
1444 return 0;
1da177e4
LT		 1445 case TIOCSERGETLSR: /* Get line status register */
1446#ifdef ISDN_DEBUG_MODEM_IOCTL
1447 printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
1448#endif
1449 return isdn_tty_get_lsr_info(info, (uint __user *) arg);
1450 default:
1451#ifdef ISDN_DEBUG_MODEM_IOCTL
1452 printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line);
1453#endif
1454 return -ENOIOCTLCMD;
1455 }
1456 return 0;
1457}
1458
1459static void
606d099c 1460isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4
LT		 1461{
1462 modem_info *info = (modem_info *) tty->driver_data;
1463
1464 if (!old_termios)
1465 isdn_tty_change_speed(info);
1466 else {
6e4d376c
AC		 1467 if (tty->termios->c_cflag == old_termios->c_cflag &&
1468 tty->termios->c_ispeed == old_termios->c_ispeed &&
1469 tty->termios->c_ospeed == old_termios->c_ospeed)
1da177e4
LT		 1470 return;
1471 isdn_tty_change_speed(info);
1472 if ((old_termios->c_cflag & CRTSCTS) &&
6e4d376c 1473 !(tty->termios->c_cflag & CRTSCTS))
1da177e4 1474 tty->hw_stopped = 0;
1da177e4
LT		 1475 }
1476}
1477
1478/*
1479 * ------------------------------------------------------------
1480 * isdn_tty_open() and friends
1481 * ------------------------------------------------------------
1482 */
1483static int
1484isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info * info)
1485{
1486 DECLARE_WAITQUEUE(wait, NULL);
1487 int do_clocal = 0;
1488 int retval;
1489
1490 /*
1491 * If the device is in the middle of being closed, then block
1492 * until it's done, and then try again.
1493 */
1494 if (tty_hung_up_p(filp) ||
1495 (info->flags & ISDN_ASYNC_CLOSING)) {
1496 if (info->flags & ISDN_ASYNC_CLOSING)
1497 interruptible_sleep_on(&info->close_wait);
1498#ifdef MODEM_DO_RESTART
1499 if (info->flags & ISDN_ASYNC_HUP_NOTIFY)
1500 return -EAGAIN;
1501 else
1502 return -ERESTARTSYS;
1503#else
1504 return -EAGAIN;
1505#endif
1506 }
1507 /*
1508 * If non-blocking mode is set, then make the check up front
1509 * and then exit.
1510 */
1511 if ((filp->f_flags & O_NONBLOCK) ||
1512 (tty->flags & (1 << TTY_IO_ERROR))) {
1513 if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
1514 return -EBUSY;
1515 info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
1516 return 0;
1517 }
1518 if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) {
1519 if (info->normal_termios.c_cflag & CLOCAL)
1520 do_clocal = 1;
1521 } else {
1522 if (tty->termios->c_cflag & CLOCAL)
1523 do_clocal = 1;
1524 }
1525 /*
1526 * Block waiting for the carrier detect and the line to become
1527 * free (i.e., not in use by the callout). While we are in
1528 * this loop, info->count is dropped by one, so that
1529 * isdn_tty_close() knows when to free things. We restore it upon
1530 * exit, either normal or abnormal.
1531 */
1532 retval = 0;
1533 add_wait_queue(&info->open_wait, &wait);
1534#ifdef ISDN_DEBUG_MODEM_OPEN
1535 printk(KERN_DEBUG "isdn_tty_block_til_ready before block: ttyi%d, count = %d\n",
1536 info->line, info->count);
1537#endif
1538 if (!(tty_hung_up_p(filp)))
1539 info->count--;
1540 info->blocked_open++;
1541 while (1) {
1542 set_current_state(TASK_INTERRUPTIBLE);
1543 if (tty_hung_up_p(filp) ||
1544 !(info->flags & ISDN_ASYNC_INITIALIZED)) {
1545#ifdef MODEM_DO_RESTART
1546 if (info->flags & ISDN_ASYNC_HUP_NOTIFY)
1547 retval = -EAGAIN;
1548 else
1549 retval = -ERESTARTSYS;
1550#else
1551 retval = -EAGAIN;
1552#endif
1553 break;
1554 }
1555 if (!(info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
1556 !(info->flags & ISDN_ASYNC_CLOSING) &&
1557 (do_clocal || (info->msr & UART_MSR_DCD))) {
1558 break;
1559 }
1560 if (signal_pending(current)) {
1561 retval = -ERESTARTSYS;
1562 break;
1563 }
1564#ifdef ISDN_DEBUG_MODEM_OPEN
1565 printk(KERN_DEBUG "isdn_tty_block_til_ready blocking: ttyi%d, count = %d\n",
1566 info->line, info->count);
1567#endif
1568 schedule();
1569 }
1570 current->state = TASK_RUNNING;
1571 remove_wait_queue(&info->open_wait, &wait);
1572 if (!tty_hung_up_p(filp))
1573 info->count++;
1574 info->blocked_open--;
1575#ifdef ISDN_DEBUG_MODEM_OPEN
1576 printk(KERN_DEBUG "isdn_tty_block_til_ready after blocking: ttyi%d, count = %d\n",
1577 info->line, info->count);
1578#endif
1579 if (retval)
1580 return retval;
1581 info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
1582 return 0;
1583}
1584
1585/*
1586 * This routine is called whenever a serial port is opened. It
1587 * enables interrupts for a serial port, linking in its async structure into
1588 * the IRQ chain. It also performs the serial-specific
1589 * initialization for the tty structure.
1590 */
1591static int
1592isdn_tty_open(struct tty_struct *tty, struct file *filp)
1593{
1594 modem_info *info;
1595 int retval, line;
1596
1597 line = tty->index;
395df11f 1598 if (line < 0 || line >= ISDN_MAX_CHANNELS)
1da177e4
LT		 1599 return -ENODEV;
1600 info = &dev->mdm.info[line];
1601 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))
1602 return -ENODEV;
1603 if (!try_module_get(info->owner)) {
156f1ed6 1604 printk(KERN_WARNING "%s: cannot reserve module\n", __func__);
1da177e4
LT		 1605 return -ENODEV;
1606 }
1607#ifdef ISDN_DEBUG_MODEM_OPEN
1608 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
1609 info->count);
1610#endif
1611 info->count++;
1612 tty->driver_data = info;
1613 info->tty = tty;
1614 /*
1615 * Start up serial port
1616 */
1617 retval = isdn_tty_startup(info);
1618 if (retval) {
1619#ifdef ISDN_DEBUG_MODEM_OPEN
1620 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1621#endif
1622 module_put(info->owner);
1623 return retval;
1624 }
1625 retval = isdn_tty_block_til_ready(tty, filp, info);
1626 if (retval) {
1627#ifdef ISDN_DEBUG_MODEM_OPEN
1628 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1629#endif
1630 module_put(info->owner);
1631 return retval;
1632 }
1633#ifdef ISDN_DEBUG_MODEM_OPEN
1634 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1635#endif
1636 dev->modempoll++;
1637#ifdef ISDN_DEBUG_MODEM_OPEN
1638 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1639#endif
1640 return 0;
1641}
1642
1643static void
1644isdn_tty_close(struct tty_struct *tty, struct file *filp)
1645{
1646 modem_info *info = (modem_info *) tty->driver_data;
1647 ulong timeout;
1648
1649 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1650 return;
1651 if (tty_hung_up_p(filp)) {
1652#ifdef ISDN_DEBUG_MODEM_OPEN
1653 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1654#endif
1655 return;
1656 }
1657 if ((tty->count == 1) && (info->count != 1)) {
1658 /*
1659 * Uh, oh. tty->count is 1, which means that the tty
1660 * structure will be freed. Info->count should always
1661 * be one in these conditions. If it's greater than
1662 * one, we've got real problems, since it means the
1663 * serial port won't be shutdown.
1664 */
1665 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
1666 "info->count is %d\n", info->count);
1667 info->count = 1;
1668 }
1669 if (--info->count < 0) {
1670 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
1671 info->line, info->count);
1672 info->count = 0;
1673 }
1674 if (info->count) {
1675#ifdef ISDN_DEBUG_MODEM_OPEN
1676 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1677#endif
7cb9478f 1678 module_put(info->owner);
1da177e4
LT		 1679 return;
1680 }
1681 info->flags |= ISDN_ASYNC_CLOSING;
1682 /*
1683 * Save the termios structure, since this port may have
1684 * separate termios for callout and dialin.
1685 */
1686 if (info->flags & ISDN_ASYNC_NORMAL_ACTIVE)
1687 info->normal_termios = *tty->termios;
1688 if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
1689 info->callout_termios = *tty->termios;
1690
1691 tty->closing = 1;
1692 /*
1693 * At this point we stop accepting input. To do this, we
1694 * disable the receive line status interrupts, and tell the
1695 * interrupt driver to stop checking the data ready bit in the
1696 * line status register.
1697 */
1698 if (info->flags & ISDN_ASYNC_INITIALIZED) {
1699 tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */
1700 /*
1701 * Before we drop DTR, make sure the UART transmitter
1702 * has completely drained; this is especially
1703 * important if there is a transmit FIFO!
1704 */
1705 timeout = jiffies + HZ;
1706 while (!(info->lsr & UART_LSR_TEMT)) {
24763c48 1707 schedule_timeout_interruptible(20);
1da177e4
LT		 1708 if (time_after(jiffies,timeout))
1709 break;
1710 }
1711 }
1712 dev->modempoll--;
1713 isdn_tty_shutdown(info);
978e595f 1714 isdn_tty_flush_buffer(tty);
1da177e4
LT		 1715 tty_ldisc_flush(tty);
1716 info->tty = NULL;
1717 info->ncarrier = 0;
1718 tty->closing = 0;
1719 module_put(info->owner);
1720 if (info->blocked_open) {
1721 msleep_interruptible(500);
1722 wake_up_interruptible(&info->open_wait);
1723 }
1724 info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CLOSING);
1725 wake_up_interruptible(&info->close_wait);
1726#ifdef ISDN_DEBUG_MODEM_OPEN
1727 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1728#endif
1729}
1730
1731/*
1732 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1733 */
1734static void
1735isdn_tty_hangup(struct tty_struct *tty)
1736{
1737 modem_info *info = (modem_info *) tty->driver_data;
1738
1739 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1740 return;
1741 isdn_tty_shutdown(info);
1742 info->count = 0;
1743 info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE);
1744 info->tty = NULL;
1745 wake_up_interruptible(&info->open_wait);
1746}
1747
1748/* This routine initializes all emulator-data.
1749 */
1750static void
1751isdn_tty_reset_profile(atemu * m)
1752{
1753 m->profile[0] = 0;
1754 m->profile[1] = 0;
1755 m->profile[2] = 43;
1756 m->profile[3] = 13;
1757 m->profile[4] = 10;
1758 m->profile[5] = 8;
1759 m->profile[6] = 3;
1760 m->profile[7] = 60;
1761 m->profile[8] = 2;
1762 m->profile[9] = 6;
1763 m->profile[10] = 7;
1764 m->profile[11] = 70;
1765 m->profile[12] = 0x45;
1766 m->profile[13] = 4;
1767 m->profile[14] = ISDN_PROTO_L2_X75I;
1768 m->profile[15] = ISDN_PROTO_L3_TRANS;
1769 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1770 m->profile[17] = ISDN_MODEM_WINSIZE;
1771 m->profile[18] = 4;
1772 m->profile[19] = 0;
1773 m->profile[20] = 0;
1774 m->profile[23] = 0;
1775 m->pmsn[0] = '\0';
1776 m->plmsn[0] = '\0';
1777}
1778
1779#ifdef CONFIG_ISDN_AUDIO
1780static void
1781isdn_tty_modem_reset_vpar(atemu * m)
1782{
1783 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1784 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1785 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1786 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1787 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1788 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1789}
1790#endif
1791
1792#ifdef CONFIG_ISDN_TTY_FAX
1793static void
1794isdn_tty_modem_reset_faxpar(modem_info * info)
1795{
1796 T30_s *f = info->fax;
1797
1798 f->code = 0;
1799 f->phase = ISDN_FAX_PHASE_IDLE;
1800 f->direction = 0;
1801 f->resolution = 1; /* fine */
1802 f->rate = 5; /* 14400 bit/s */
1803 f->width = 0;
1804 f->length = 0;
1805 f->compression = 0;
1806 f->ecm = 0;
1807 f->binary = 0;
1808 f->scantime = 0;
1809 memset(&f->id[0], 32, FAXIDLEN - 1);
1810 f->id[FAXIDLEN - 1] = 0;
1811 f->badlin = 0;
1812 f->badmul = 0;
1813 f->bor = 0;
1814 f->nbc = 0;
1815 f->cq = 0;
1816 f->cr = 0;
1817 f->ctcrty = 0;
1818 f->minsp = 0;
1819 f->phcto = 30;
1820 f->rel = 0;
1821 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1822 f->pollid[FAXIDLEN - 1] = 0;
1823}
1824#endif
1825
1826static void
1827isdn_tty_modem_reset_regs(modem_info * info, int force)
1828{
1829 atemu *m = &info->emu;
1830 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1831 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1832 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1833 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1834 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1835 }
1836#ifdef CONFIG_ISDN_AUDIO
1837 isdn_tty_modem_reset_vpar(m);
1838#endif
1839#ifdef CONFIG_ISDN_TTY_FAX
1840 isdn_tty_modem_reset_faxpar(info);
1841#endif
1842 m->mdmcmdl = 0;
1843}
1844
1845static void
1846modem_write_profile(atemu * m)
1847{
1848 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1849 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1850 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1851 if (dev->profd)
1852 send_sig(SIGIO, dev->profd, 1);
1853}
1854
b68e31d0 1855static const struct tty_operations modem_ops = {
1da177e4
LT		 1856 .open = isdn_tty_open,
1857 .close = isdn_tty_close,
1858 .write = isdn_tty_write,
1859 .flush_chars = isdn_tty_flush_chars,
1860 .write_room = isdn_tty_write_room,
1861 .chars_in_buffer = isdn_tty_chars_in_buffer,
1862 .flush_buffer = isdn_tty_flush_buffer,
1863 .ioctl = isdn_tty_ioctl,
1864 .throttle = isdn_tty_throttle,
1865 .unthrottle = isdn_tty_unthrottle,
1866 .set_termios = isdn_tty_set_termios,
1867 .hangup = isdn_tty_hangup,
1868 .tiocmget = isdn_tty_tiocmget,
1869 .tiocmset = isdn_tty_tiocmset,
1870};
1871
1872int
1873isdn_tty_modem_init(void)
1874{
1875 isdn_modem_t *m;
1876 int i, retval;
1877 modem_info *info;
1878
1879 m = &dev->mdm;
1880 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1881 if (!m->tty_modem)
1882 return -ENOMEM;
1883 m->tty_modem->name = "ttyI";
1da177e4
LT		 1884 m->tty_modem->major = ISDN_TTY_MAJOR;
1885 m->tty_modem->minor_start = 0;
1886 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1887 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1888 m->tty_modem->init_termios = tty_std_termios;
1889 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
331b8319 1890 m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1da177e4
LT		 1891 m->tty_modem->driver_name = "isdn_tty";
1892 tty_set_operations(m->tty_modem, &modem_ops);
1893 retval = tty_register_driver(m->tty_modem);
1894 if (retval) {
1895 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1896 goto err;
1897 }
1898 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1899 info = &m->info[i];
1900#ifdef CONFIG_ISDN_TTY_FAX
1901 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1902 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1903 retval = -ENOMEM;
1904 goto err_unregister;
1905 }
1906#endif
1907#ifdef MODULE
1908 info->owner = THIS_MODULE;
1909#endif
1910 spin_lock_init(&info->readlock);
1da177e4
LT		 1911 sprintf(info->last_cause, "0000");
1912 sprintf(info->last_num, "none");
1913 info->last_dir = 0;
1914 info->last_lhup = 1;
1915 info->last_l2 = -1;
1916 info->last_si = 0;
1917 isdn_tty_reset_profile(&info->emu);
1918 isdn_tty_modem_reset_regs(info, 1);
1919 info->magic = ISDN_ASYNC_MAGIC;
1920 info->line = i;
1921 info->tty = NULL;
1922 info->x_char = 0;
1923 info->count = 0;
1924 info->blocked_open = 0;
1925 init_waitqueue_head(&info->open_wait);
1926 init_waitqueue_head(&info->close_wait);
1927 info->isdn_driver = -1;
1928 info->isdn_channel = -1;
1929 info->drv_index = -1;
1930 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1931 init_timer(&info->nc_timer);
1932 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1933 info->nc_timer.data = (unsigned long) info;
1934 skb_queue_head_init(&info->xmit_queue);
1935#ifdef CONFIG_ISDN_AUDIO
1936 skb_queue_head_init(&info->dtmf_queue);
1937#endif
1938 if (!(info->xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5, GFP_KERNEL))) {
1939 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1940 retval = -ENOMEM;
1941 goto err_unregister;
1942 }
1943 /* Make room for T.70 header */
1944 info->xmit_buf += 4;
1945 }
1946 return 0;
1947err_unregister:
1948 for (i--; i >= 0; i--) {
1949 info = &m->info[i];
1950#ifdef CONFIG_ISDN_TTY_FAX
1951 kfree(info->fax);
1952#endif
1953 kfree(info->xmit_buf - 4);
1954 }
1955 tty_unregister_driver(m->tty_modem);
1956 err:
1957 put_tty_driver(m->tty_modem);
1958 m->tty_modem = NULL;
1959 return retval;
1960}
1961
1962void
1963isdn_tty_exit(void)
1964{
1965 modem_info *info;
1966 int i;
1967
1968 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1969 info = &dev->mdm.info[i];
1970 isdn_tty_cleanup_xmit(info);
1971#ifdef CONFIG_ISDN_TTY_FAX
1972 kfree(info->fax);
1973#endif
1974 kfree(info->xmit_buf - 4);
1975 }
1976 tty_unregister_driver(dev->mdm.tty_modem);
1977 put_tty_driver(dev->mdm.tty_modem);
1978 dev->mdm.tty_modem = NULL;
1979}
1980
1981
1982/*
1983 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1984 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1985 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1986 */
1987
1988static int
1989isdn_tty_match_icall(char *cid, atemu *emu, int di)
1990{
1991#ifdef ISDN_DEBUG_MODEM_ICALL
1992 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1993 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1994 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1995#endif
1996 if (strlen(emu->lmsn)) {
1997 char *p = emu->lmsn;
1998 char *q;
1999 int tmp;
2000 int ret = 0;
2001
2002 while (1) {
2003 if ((q = strchr(p, ';')))
2004 *q = '\0';
2005 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
2006 ret = tmp;
2007#ifdef ISDN_DEBUG_MODEM_ICALL
2008 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
2009 p, isdn_map_eaz2msn(emu->msn, di), tmp);
2010#endif
2011 if (q) {
2012 *q = ';';
2013 p = q;
2014 p++;
2015 }
2016 if (!tmp)
2017 return 0;
2018 if (!q)
2019 break;
2020 }
2021 return ret;
2022 } else {
2023 int tmp;
2024 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
2025#ifdef ISDN_DEBUG_MODEM_ICALL
2026 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
2027 isdn_map_eaz2msn(emu->msn, di), tmp);
2028#endif
2029 return tmp;
2030 }
2031}
2032
2033/*
2034 * An incoming call-request has arrived.
2035 * Search the tty-devices for an appropriate device and bind
2036 * it to the ISDN-Channel.
2037 * Return:
2038 *
2039 * 0 = No matching device found.
2040 * 1 = A matching device found.
2041 * 3 = No match found, but eventually would match, if
2042 * CID is longer.
2043 */
2044int
2045isdn_tty_find_icall(int di, int ch, setup_parm *setup)
2046{
2047 char *eaz;
2048 int i;
2049 int wret;
2050 int idx;
2051 int si1;
2052 int si2;
2053 char *nr;
2054 ulong flags;
2055
2056 if (!setup->phone[0]) {
2057 nr = "0";
2058 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
2059 } else
2060 nr = setup->phone;
2061 si1 = (int) setup->si1;
2062 si2 = (int) setup->si2;
2063 if (!setup->eazmsn[0]) {
2064 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
2065 eaz = "0";
2066 } else
2067 eaz = setup->eazmsn;
2068#ifdef ISDN_DEBUG_MODEM_ICALL
2069 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
2070#endif
2071 wret = 0;
2072 spin_lock_irqsave(&dev->lock, flags);
2073 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2074 modem_info *info = &dev->mdm.info[i];
2075
2076 if (info->count == 0)
2077 continue;
2078 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
2079 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
2080 idx = isdn_dc2minor(di, ch);
2081#ifdef ISDN_DEBUG_MODEM_ICALL
2082 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
2083 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
2084 info->flags, info->isdn_driver, info->isdn_channel,
2085 dev->usage[idx]);
2086#endif
2087 if (
2088#ifndef FIX_FILE_TRANSFER
2089 (info->flags & ISDN_ASYNC_NORMAL_ACTIVE) &&
2090#endif
2091 (info->isdn_driver == -1) &&
2092 (info->isdn_channel == -1) &&
2093 (USG_NONE(dev->usage[idx]))) {
2094 int matchret;
2095
2096 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
2097 wret = matchret;
2098 if (!matchret) { /* EAZ is matching */
2099 info->isdn_driver = di;
2100 info->isdn_channel = ch;
2101 info->drv_index = idx;
2102 dev->m_idx[idx] = info->line;
2103 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
2104 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
2105 strcpy(dev->num[idx], nr);
2106 strcpy(info->emu.cpn, eaz);
2107 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
2108 info->emu.mdmreg[REG_PLAN] = setup->plan;
2109 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2110 isdn_info_update();
2111 spin_unlock_irqrestore(&dev->lock, flags);
2112 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2113 info->line);
2114 info->msr |= UART_MSR_RI;
2115 isdn_tty_modem_result(RESULT_RING, info);
2116 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2117 return 1;
2118 }
2119 }
2120 }
2121 }
2122 spin_unlock_irqrestore(&dev->lock, flags);
2123 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
2124 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2))? "rejected" : "ignored");
2125 return (wret == 2)?3:0;
2126}
2127
2128#define TTY_IS_ACTIVE(info) \
2129 (info->flags & (ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE))
2130
2131int
2132isdn_tty_stat_callback(int i, isdn_ctrl *c)
2133{
2134 int mi;
2135 modem_info *info;
2136 char *e;
2137
2138 if (i < 0)
2139 return 0;
2140 if ((mi = dev->m_idx[i]) >= 0) {
2141 info = &dev->mdm.info[mi];
2142 switch (c->command) {
2143 case ISDN_STAT_CINF:
2144 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2145 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2146 if (e == (char *)c->parm.num)
2147 info->emu.charge = 0;
2148
2149 break;
2150 case ISDN_STAT_BSENT:
2151#ifdef ISDN_TTY_STAT_DEBUG
2152 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
2153#endif
2154 if ((info->isdn_driver == c->driver) &&
2155 (info->isdn_channel == c->arg)) {
2156 info->msr |= UART_MSR_CTS;
2157 if (info->send_outstanding)
2158 if (!(--info->send_outstanding))
2159 info->lsr |= UART_LSR_TEMT;
2160 isdn_tty_tint(info);
2161 return 1;
2162 }
2163 break;
2164 case ISDN_STAT_CAUSE:
2165#ifdef ISDN_TTY_STAT_DEBUG
2166 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2167#endif
2168 /* Signal cause to tty-device */
2169 strncpy(info->last_cause, c->parm.num, 5);
2170 return 1;
2171 case ISDN_STAT_DISPLAY:
2172#ifdef ISDN_TTY_STAT_DEBUG
2173 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
2174#endif
2175 /* Signal display to tty-device */
2176 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2177 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2178 isdn_tty_at_cout("\r\n", info);
2179 isdn_tty_at_cout("DISPLAY: ", info);
2180 isdn_tty_at_cout(c->parm.display, info);
2181 isdn_tty_at_cout("\r\n", info);
2182 }
2183 return 1;
2184 case ISDN_STAT_DCONN:
2185#ifdef ISDN_TTY_STAT_DEBUG
2186 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2187#endif
2188 if (TTY_IS_ACTIVE(info)) {
2189 if (info->dialing == 1) {
2190 info->dialing = 2;
2191 return 1;
2192 }
2193 }
2194 break;
2195 case ISDN_STAT_DHUP:
2196#ifdef ISDN_TTY_STAT_DEBUG
2197 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
2198#endif
2199 if (TTY_IS_ACTIVE(info)) {
2200 if (info->dialing == 1)
2201 isdn_tty_modem_result(RESULT_BUSY, info);
2202 if (info->dialing > 1)
2203 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2204 info->dialing = 0;
2205#ifdef ISDN_DEBUG_MODEM_HUP
2206 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
2207#endif
2208 isdn_tty_modem_hup(info, 0);
2209 return 1;
2210 }
2211 break;
2212 case ISDN_STAT_BCONN:
2213#ifdef ISDN_TTY_STAT_DEBUG
2214 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2215#endif
2216 /* Wake up any processes waiting
2217 * for incoming call of this device when
2218 * DCD follow the state of incoming carrier
2219 */
2220 if (info->blocked_open &&
2221 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
2222 wake_up_interruptible(&info->open_wait);
2223 }
2224
2225 /* Schedule CONNECT-Message to any tty
2226 * waiting for it and
2227 * set DCD-bit of its modem-status.
2228 */
2229 if (TTY_IS_ACTIVE(info) ||
2230 (info->blocked_open && (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
2231 info->msr |= UART_MSR_DCD;
2232 info->emu.charge = 0;
2233 if (info->dialing & 0xf)
2234 info->last_dir = 1;
2235 else
2236 info->last_dir = 0;
2237 info->dialing = 0;
2238 info->rcvsched = 1;
2239 if (USG_MODEM(dev->usage[i])) {
2240 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2241 strcpy(info->emu.connmsg, c->parm.num);
2242 isdn_tty_modem_result(RESULT_CONNECT, info);
2243 } else
2244 isdn_tty_modem_result(RESULT_CONNECT64000, info);
2245 }
2246 if (USG_VOICE(dev->usage[i]))
2247 isdn_tty_modem_result(RESULT_VCON, info);
2248 return 1;
2249 }
2250 break;
2251 case ISDN_STAT_BHUP:
2252#ifdef ISDN_TTY_STAT_DEBUG
2253 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
2254#endif
2255 if (TTY_IS_ACTIVE(info)) {
2256#ifdef ISDN_DEBUG_MODEM_HUP
2257 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
2258#endif
2259 isdn_tty_modem_hup(info, 0);
2260 return 1;
2261 }
2262 break;
2263 case ISDN_STAT_NODCH:
2264#ifdef ISDN_TTY_STAT_DEBUG
2265 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2266#endif
2267 if (TTY_IS_ACTIVE(info)) {
2268 if (info->dialing) {
2269 info->dialing = 0;
2270 info->last_l2 = -1;
2271 info->last_si = 0;
2272 sprintf(info->last_cause, "0000");
2273 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
2274 }
2275 isdn_tty_modem_hup(info, 0);
2276 return 1;
2277 }
2278 break;
2279 case ISDN_STAT_UNLOAD:
2280#ifdef ISDN_TTY_STAT_DEBUG
2281 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
2282#endif
2283 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2284 info = &dev->mdm.info[i];
2285 if (info->isdn_driver == c->driver) {
2286 if (info->online)
2287 isdn_tty_modem_hup(info, 1);
2288 }
2289 }
2290 return 1;
2291#ifdef CONFIG_ISDN_TTY_FAX
2292 case ISDN_STAT_FAXIND:
2293 if (TTY_IS_ACTIVE(info)) {
2294 isdn_tty_fax_command(info, c);
2295 }
2296 break;
2297#endif
2298#ifdef CONFIG_ISDN_AUDIO
2299 case ISDN_STAT_AUDIO:
2300 if (TTY_IS_ACTIVE(info)) {
2301 switch(c->parm.num[0]) {
2302 case ISDN_AUDIO_DTMF:
2303 if (info->vonline) {
2304 isdn_audio_put_dle_code(info,
2305 c->parm.num[1]);
2306 }
2307 break;
2308 }
2309 }
2310 break;
2311#endif
2312 }
2313 }
2314 return 0;
2315}
2316
2317/*********************************************************************
2318 Modem-Emulator-Routines
2319 *********************************************************************/
2320
2321#define cmdchar(c) ((c>=' ')&&(c<=0x7f))
2322
2323/*
2324 * Put a message from the AT-emulator into receive-buffer of tty,
2325 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2326 */
2327void
2328isdn_tty_at_cout(char *msg, modem_info * info)
2329{
2330 struct tty_struct *tty;
2331 atemu *m = &info->emu;
2332 char *p;
2333 char c;
2334 u_long flags;
2335 struct sk_buff *skb = NULL;
2336 char *sp = NULL;
1f4d4a80 2337 int l;
1da177e4
LT		 2338
2339 if (!msg) {
2340 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2341 return;
2342 }
1f4d4a80
AB		 2343
2344 l = strlen(msg);
2345
1da177e4
LT		 2346 spin_lock_irqsave(&info->readlock, flags);
2347 tty = info->tty;
2348 if ((info->flags & ISDN_ASYNC_CLOSING) || (!tty)) {
2349 spin_unlock_irqrestore(&info->readlock, flags);
2350 return;
2351 }
2352
33f0f88f
AC		 2353 /* use queue instead of direct, if online and */
2354 /* data is in queue or buffer is full */
61b9a26a
KK		 2355 if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
2356 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
33f0f88f 2357 skb = alloc_skb(l, GFP_ATOMIC);
1da177e4
LT		 2358 if (!skb) {
2359 spin_unlock_irqrestore(&info->readlock, flags);
2360 return;
2361 }
33f0f88f 2362 sp = skb_put(skb, l);
1da177e4
LT		 2363#ifdef CONFIG_ISDN_AUDIO
2364 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2365 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2366#endif
2367 }
2368
2369 for (p = msg; *p; p++) {
2370 switch (*p) {
2371 case '\r':
2372 c = m->mdmreg[REG_CR];
2373 break;
2374 case '\n':
2375 c = m->mdmreg[REG_LF];
2376 break;
2377 case '\b':
2378 c = m->mdmreg[REG_BS];
2379 break;
2380 default:
2381 c = *p;
2382 }
2383 if (skb) {
2384 *sp++ = c;
2385 } else {
33f0f88f 2386 if(tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
1da177e4 2387 break;
1da177e4
LT		 2388 }
2389 }
2390 if (skb) {
2391 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2392 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2393 spin_unlock_irqrestore(&info->readlock, flags);
2394 /* Schedule dequeuing */
33f0f88f 2395 if (dev->modempoll && info->rcvsched)
1da177e4
LT		 2396 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2397
2398 } else {
2399 spin_unlock_irqrestore(&info->readlock, flags);
33f0f88f 2400 tty_flip_buffer_push(tty);
1da177e4
LT		 2401 }
2402}
2403
2404/*
2405 * Perform ATH Hangup
2406 */
2407static void
2408isdn_tty_on_hook(modem_info * info)
2409{
2410 if (info->isdn_channel >= 0) {
2411#ifdef ISDN_DEBUG_MODEM_HUP
2412 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2413#endif
2414 isdn_tty_modem_hup(info, 1);
2415 }
2416}
2417
2418static void
2419isdn_tty_off_hook(void)
2420{
2421 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2422}
2423
2424#define PLUSWAIT1 (HZ/2) /* 0.5 sec. */
2425#define PLUSWAIT2 (HZ*3/2) /* 1.5 sec */
2426
2427/*
2428 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2429 * isdn_tty_modem_escape() if sequence found.
2430 *
2431 * Parameters:
2432 * p pointer to databuffer
2433 * plus escape-character
2434 * count length of buffer
2435 * pluscount count of valid escape-characters so far
2436 * lastplus timestamp of last character
2437 */
2438static void
2439isdn_tty_check_esc(const u_char * p, u_char plus, int count, int *pluscount,
2440 u_long *lastplus)
2441{
2442 if (plus > 127)
2443 return;
2444 if (count > 3) {
2445 p += count - 3;
2446 count = 3;
2447 *pluscount = 0;
2448 }
2449 while (count > 0) {
2450 if (*(p++) == plus) {
2451 if ((*pluscount)++) {
2452 /* Time since last '+' > 0.5 sec. ? */
2453 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2454 *pluscount = 1;
2455 } else {
2456 /* Time since last non-'+' < 1.5 sec. ? */
2457 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2458 *pluscount = 0;
2459 }
2460 if ((*pluscount == 3) && (count == 1))
2461 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2462 if (*pluscount > 3)
2463 *pluscount = 1;
2464 } else
2465 *pluscount = 0;
2466 *lastplus = jiffies;
2467 count--;
2468 }
2469}
2470
2471/*
2472 * Return result of AT-emulator to tty-receive-buffer, depending on
2473 * modem-register 12, bit 0 and 1.
2474 * For CONNECT-messages also switch to online-mode.
2475 * For RING-message handle auto-ATA if register 0 != 0
2476 */
2477
2478static void
2479isdn_tty_modem_result(int code, modem_info * info)
2480{
2481 atemu *m = &info->emu;
2482 static char *msg[] =
2483 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2484 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2485 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2486 char s[ISDN_MSNLEN+10];
2487
2488 switch (code) {
2489 case RESULT_RING:
2490 m->mdmreg[REG_RINGCNT]++;
2491 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2492 /* Automatically accept incoming call */
2493 isdn_tty_cmd_ATA(info);
2494 break;
2495 case RESULT_NO_CARRIER:
2496#ifdef ISDN_DEBUG_MODEM_HUP
2497 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
2498 (info->flags & ISDN_ASYNC_CLOSING),
2499 (!info->tty));
2500#endif
2501 m->mdmreg[REG_RINGCNT] = 0;
2502 del_timer(&info->nc_timer);
2503 info->ncarrier = 0;
2504 if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
2505 return;
2506 }
2507#ifdef CONFIG_ISDN_AUDIO
2508 if (info->vonline & 1) {
2509#ifdef ISDN_DEBUG_MODEM_VOICE
2510 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2511 info->line);
2512#endif
2513 /* voice-recording, add DLE-ETX */
2514 isdn_tty_at_cout("\020\003", info);
2515 }
2516 if (info->vonline & 2) {
2517#ifdef ISDN_DEBUG_MODEM_VOICE
2518 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2519 info->line);
2520#endif
2521 /* voice-playing, add DLE-DC4 */
2522 isdn_tty_at_cout("\020\024", info);
2523 }
2524#endif
2525 break;
2526 case RESULT_CONNECT:
2527 case RESULT_CONNECT64000:
2528 sprintf(info->last_cause, "0000");
2529 if (!info->online)
2530 info->online = 2;
2531 break;
2532 case RESULT_VCON:
2533#ifdef ISDN_DEBUG_MODEM_VOICE
2534 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2535 info->line);
2536#endif
2537 sprintf(info->last_cause, "0000");
2538 if (!info->online)
2539 info->online = 1;
2540 break;
2541 } /* switch(code) */
2542
2543 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2544 /* Show results */
2545 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2546 /* Show numeric results only */
2547 sprintf(s, "\r\n%d\r\n", code);
2548 isdn_tty_at_cout(s, info);
2549 } else {
2550 if (code == RESULT_RING) {
2551 /* return if "show RUNG" and ringcounter>1 */
2552 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
2553 (m->mdmreg[REG_RINGCNT] > 1))
2554 return;
2555 /* print CID, _before_ _every_ ring */
2556 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2557 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2558 isdn_tty_at_cout(dev->num[info->drv_index], info);
2559 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2560 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2561 isdn_tty_at_cout(info->emu.cpn, info);
2562 }
2563 }
2564 }
2565 isdn_tty_at_cout("\r\n", info);
2566 isdn_tty_at_cout(msg[code], info);
2567 switch (code) {
2568 case RESULT_CONNECT:
2569 switch (m->mdmreg[REG_L2PROT]) {
2570 case ISDN_PROTO_L2_MODEM:
2571 isdn_tty_at_cout(" ", info);
2572 isdn_tty_at_cout(m->connmsg, info);
2573 break;
2574 }
2575 break;
2576 case RESULT_RING:
2577 /* Append CPN, if enabled */
2578 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2579 sprintf(s, "/%s", m->cpn);
2580 isdn_tty_at_cout(s, info);
2581 }
2582 /* Print CID only once, _after_ 1st RING */
2583 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2584 (m->mdmreg[REG_RINGCNT] == 1)) {
2585 isdn_tty_at_cout("\r\n", info);
2586 isdn_tty_at_cout("CALLER NUMBER: ", info);
2587 isdn_tty_at_cout(dev->num[info->drv_index], info);
2588 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2589 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2590 isdn_tty_at_cout(info->emu.cpn, info);
2591 }
2592 }
2593 break;
2594 case RESULT_NO_CARRIER:
2595 case RESULT_NO_DIALTONE:
2596 case RESULT_BUSY:
2597 case RESULT_NO_ANSWER:
2598 m->mdmreg[REG_RINGCNT] = 0;
2599 /* Append Cause-Message if enabled */
2600 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2601 sprintf(s, "/%s", info->last_cause);
2602 isdn_tty_at_cout(s, info);
2603 }
2604 break;
2605 case RESULT_CONNECT64000:
2606 /* Append Protocol to CONNECT message */
2607 switch (m->mdmreg[REG_L2PROT]) {
2608 case ISDN_PROTO_L2_X75I:
2609 case ISDN_PROTO_L2_X75UI:
2610 case ISDN_PROTO_L2_X75BUI:
2611 isdn_tty_at_cout("/X.75", info);
2612 break;
2613 case ISDN_PROTO_L2_HDLC:
2614 isdn_tty_at_cout("/HDLC", info);
2615 break;
2616 case ISDN_PROTO_L2_V11096:
2617 isdn_tty_at_cout("/V110/9600", info);
2618 break;
2619 case ISDN_PROTO_L2_V11019:
2620 isdn_tty_at_cout("/V110/19200", info);
2621 break;
2622 case ISDN_PROTO_L2_V11038:
2623 isdn_tty_at_cout("/V110/38400", info);
2624 break;
2625 }
2626 if (m->mdmreg[REG_T70] & BIT_T70) {
2627 isdn_tty_at_cout("/T.70", info);
2628 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2629 isdn_tty_at_cout("+", info);
2630 }
2631 break;
2632 }
2633 isdn_tty_at_cout("\r\n", info);
2634 }
2635 }
2636 if (code == RESULT_NO_CARRIER) {
2637 if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
2638 return;
2639 }
1da177e4
LT		 2640 if ((info->flags & ISDN_ASYNC_CHECK_CD) &&
2641 (!((info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
2642 (info->flags & ISDN_ASYNC_CALLOUT_NOHUP)))) {
2643 tty_hangup(info->tty);
2644 }
2645 }
2646}
2647
2648
2649/*
2650 * Display a modem-register-value.
2651 */
2652static void
2653isdn_tty_show_profile(int ridx, modem_info * info)
2654{
2655 char v[6];
2656
2657 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2658 isdn_tty_at_cout(v, info);
2659}
2660
2661/*
2662 * Get MSN-string from char-pointer, set pointer to end of number
2663 */
2664static void
2665isdn_tty_get_msnstr(char *n, char **p)
2666{
2667 int limit = ISDN_MSNLEN - 1;
2668
2669 while (((*p[0] >= '0' && *p[0] <= '9') ||
2670 /* Why a comma ??? */
2671 (*p[0] == ',') || (*p[0] == ':')) &&
2672 (limit--))
2673 *n++ = *p[0]++;
2674 *n = '\0';
2675}
2676
2677/*
2678 * Get phone-number from modem-commandbuffer
2679 */
2680static void
2681isdn_tty_getdial(char *p, char *q,int cnt)
2682{
2683 int first = 1;
2684 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
2685 buffer overflow */
2686
924ad158 2687 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt>0) {
1da177e4 2688 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
924ad158 2689 ((*p == 'R') && first) ||
1da177e4
LT		 2690 (*p == '*') || (*p == '#')) {
2691 *q++ = *p;
2692 limit--;
2693 }
2694 if(!limit)
2695 break;
2696 p++;
2697 first = 0;
2698 }
2699 *q = 0;
2700}
2701
2702#define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2703#define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2704
2705static void
2706isdn_tty_report(modem_info * info)
2707{
2708 atemu *m = &info->emu;
2709 char s[80];
2710
2711 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2712 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2713 isdn_tty_at_cout(s, info);
2714 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2715 isdn_tty_at_cout(s, info);
2716 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2717 switch (info->last_l2) {
2718 case ISDN_PROTO_L2_X75I:
2719 isdn_tty_at_cout("X.75i", info);
2720 break;
2721 case ISDN_PROTO_L2_X75UI:
2722 isdn_tty_at_cout("X.75ui", info);
2723 break;
2724 case ISDN_PROTO_L2_X75BUI:
2725 isdn_tty_at_cout("X.75bui", info);
2726 break;
2727 case ISDN_PROTO_L2_HDLC:
2728 isdn_tty_at_cout("HDLC", info);
2729 break;
2730 case ISDN_PROTO_L2_V11096:
2731 isdn_tty_at_cout("V.110 9600 Baud", info);
2732 break;
2733 case ISDN_PROTO_L2_V11019:
2734 isdn_tty_at_cout("V.110 19200 Baud", info);
2735 break;
2736 case ISDN_PROTO_L2_V11038:
2737 isdn_tty_at_cout("V.110 38400 Baud", info);
2738 break;
2739 case ISDN_PROTO_L2_TRANS:
2740 isdn_tty_at_cout("transparent", info);
2741 break;
2742 case ISDN_PROTO_L2_MODEM:
2743 isdn_tty_at_cout("modem", info);
2744 break;
2745 case ISDN_PROTO_L2_FAX:
2746 isdn_tty_at_cout("fax", info);
2747 break;
2748 default:
2749 isdn_tty_at_cout("unknown", info);
2750 break;
2751 }
2752 if (m->mdmreg[REG_T70] & BIT_T70) {
2753 isdn_tty_at_cout("/T.70", info);
2754 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2755 isdn_tty_at_cout("+", info);
2756 }
2757 isdn_tty_at_cout("\r\n", info);
2758 isdn_tty_at_cout(" Service: ", info);
2759 switch (info->last_si) {
2760 case 1:
2761 isdn_tty_at_cout("audio\r\n", info);
2762 break;
2763 case 5:
2764 isdn_tty_at_cout("btx\r\n", info);
2765 break;
2766 case 7:
2767 isdn_tty_at_cout("data\r\n", info);
2768 break;
2769 default:
2770 sprintf(s, "%d\r\n", info->last_si);
2771 isdn_tty_at_cout(s, info);
2772 break;
2773 }
2774 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2775 isdn_tty_at_cout(s, info);
2776 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2777 isdn_tty_at_cout(s, info);
2778}
2779
2780/*
2781 * Parse AT&.. commands.
2782 */
2783static int
2784isdn_tty_cmd_ATand(char **p, modem_info * info)
2785{
2786 atemu *m = &info->emu;
2787 int i;
2788 char rb[100];
2789
2790#define MAXRB (sizeof(rb) - 1)
2791
2792 switch (*p[0]) {
2793 case 'B':
2794 /* &B - Set Buffersize */
2795 p[0]++;
2796 i = isdn_getnum(p);
2797 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2798 PARSE_ERROR1;
2799#ifdef CONFIG_ISDN_AUDIO
2800 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2801 PARSE_ERROR1;
2802#endif
2803 m->mdmreg[REG_PSIZE] = i / 16;
2804 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2805 switch (m->mdmreg[REG_L2PROT]) {
2806 case ISDN_PROTO_L2_V11096:
2807 case ISDN_PROTO_L2_V11019:
2808 case ISDN_PROTO_L2_V11038:
2809 info->xmit_size /= 10;
2810 }
2811 break;
2812 case 'C':
2813 /* &C - DCD Status */
2814 p[0]++;
2815 switch (isdn_getnum(p)) {
2816 case 0:
2817 m->mdmreg[REG_DCD] &= ~BIT_DCD;
2818 break;
2819 case 1:
2820 m->mdmreg[REG_DCD] |= BIT_DCD;
2821 break;
2822 default:
2823 PARSE_ERROR1
2824 }
2825 break;
2826 case 'D':
2827 /* &D - Set DTR-Low-behavior */
2828 p[0]++;
2829 switch (isdn_getnum(p)) {
2830 case 0:
2831 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2832 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2833 break;
2834 case 2:
2835 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2836 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2837 break;
2838 case 3:
2839 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2840 m->mdmreg[REG_DTRR] |= BIT_DTRR;
2841 break;
2842 default:
2843 PARSE_ERROR1
2844 }
2845 break;
2846 case 'E':
2847 /* &E -Set EAZ/MSN */
2848 p[0]++;
2849 isdn_tty_get_msnstr(m->msn, p);
2850 break;
2851 case 'F':
2852 /* &F -Set Factory-Defaults */
2853 p[0]++;
2854 if (info->msr & UART_MSR_DCD)
2855 PARSE_ERROR1;
2856 isdn_tty_reset_profile(m);
2857 isdn_tty_modem_reset_regs(info, 1);
2858 break;
2859#ifdef DUMMY_HAYES_AT
2860 case 'K':
2861 /* only for be compilant with common scripts */
2862 /* &K Flowcontrol - no function */
2863 p[0]++;
2864 isdn_getnum(p);
2865 break;
2866#endif
2867 case 'L':
2868 /* &L -Set Numbers to listen on */
2869 p[0]++;
2870 i = 0;
2871 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
a6a61c54 2872 (i < ISDN_LMSNLEN - 1))
1da177e4
LT		 2873 m->lmsn[i++] = *p[0]++;
2874 m->lmsn[i] = '\0';
2875 break;
2876 case 'R':
2877 /* &R - Set V.110 bitrate adaption */
2878 p[0]++;
2879 i = isdn_getnum(p);
2880 switch (i) {
2881 case 0:
2882 /* Switch off V.110, back to X.75 */
2883 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2884 m->mdmreg[REG_SI2] = 0;
2885 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2886 break;
2887 case 9600:
2888 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2889 m->mdmreg[REG_SI2] = 197;
2890 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2891 break;
2892 case 19200:
2893 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2894 m->mdmreg[REG_SI2] = 199;
2895 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2896 break;
2897 case 38400:
2898 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2899 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2900 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2901 break;
2902 default:
2903 PARSE_ERROR1;
2904 }
2905 /* Switch off T.70 */
2906 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2907 /* Set Service 7 */
2908 m->mdmreg[REG_SI1] |= 4;
2909 break;
2910 case 'S':
2911 /* &S - Set Windowsize */
2912 p[0]++;
2913 i = isdn_getnum(p);
2914 if ((i > 0) && (i < 9))
2915 m->mdmreg[REG_WSIZE] = i;
2916 else
2917 PARSE_ERROR1;
2918 break;
2919 case 'V':
2920 /* &V - Show registers */
2921 p[0]++;
2922 isdn_tty_at_cout("\r\n", info);
2923 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2924 sprintf(rb, "S%02d=%03d%s", i,
2925 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2926 isdn_tty_at_cout(rb, info);
2927 }
2928 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2929 strlen(m->msn) ? m->msn : "None");
2930 isdn_tty_at_cout(rb, info);
2931 if (strlen(m->lmsn)) {
2932 isdn_tty_at_cout("\r\nListen: ", info);
2933 isdn_tty_at_cout(m->lmsn, info);
2934 isdn_tty_at_cout("\r\n", info);
2935 }
2936 break;
2937 case 'W':
2938 /* &W - Write Profile */
2939 p[0]++;
2940 switch (*p[0]) {
2941 case '0':
2942 p[0]++;
2943 modem_write_profile(m);
2944 break;
2945 default:
2946 PARSE_ERROR1;
2947 }
2948 break;
2949 case 'X':
2950 /* &X - Switch to BTX-Mode and T.70 */
2951 p[0]++;
2952 switch (isdn_getnum(p)) {
2953 case 0:
2954 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2955 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2956 break;
2957 case 1:
2958 m->mdmreg[REG_T70] |= BIT_T70;
2959 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2960 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2961 info->xmit_size = 112;
2962 m->mdmreg[REG_SI1] = 4;
2963 m->mdmreg[REG_SI2] = 0;
2964 break;
2965 case 2:
2966 m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT);
2967 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2968 info->xmit_size = 112;
2969 m->mdmreg[REG_SI1] = 4;
2970 m->mdmreg[REG_SI2] = 0;
2971 break;
2972 default:
2973 PARSE_ERROR1;
2974 }
2975 break;
2976 default:
2977 PARSE_ERROR1;
2978 }
2979 return 0;
2980}
2981
2982static int
2983isdn_tty_check_ats(int mreg, int mval, modem_info * info, atemu * m)
2984{
2985 /* Some plausibility checks */
2986 switch (mreg) {
2987 case REG_L2PROT:
2988 if (mval > ISDN_PROTO_L2_MAX)
2989 return 1;
2990 break;
2991 case REG_PSIZE:
2992 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2993 return 1;
2994#ifdef CONFIG_ISDN_AUDIO
2995 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
2996 return 1;
2997#endif
2998 info->xmit_size = mval * 16;
2999 switch (m->mdmreg[REG_L2PROT]) {
3000 case ISDN_PROTO_L2_V11096:
3001 case ISDN_PROTO_L2_V11019:
3002 case ISDN_PROTO_L2_V11038:
3003 info->xmit_size /= 10;
3004 }
3005 break;
3006 case REG_SI1I:
3007 case REG_PLAN:
3008 case REG_SCREEN:
3009 /* readonly registers */
3010 return 1;
3011 }
3012 return 0;
3013}
3014
3015/*
3016 * Perform ATS command
3017 */
3018static int
3019isdn_tty_cmd_ATS(char **p, modem_info * info)
3020{
3021 atemu *m = &info->emu;
3022 int bitpos;
3023 int mreg;
3024 int mval;
3025 int bval;
3026
3027 mreg = isdn_getnum(p);
3028 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
3029 PARSE_ERROR1;
3030 switch (*p[0]) {
3031 case '=':
3032 p[0]++;
3033 mval = isdn_getnum(p);
3034 if (mval < 0 || mval > 255)
3035 PARSE_ERROR1;
3036 if (isdn_tty_check_ats(mreg, mval, info, m))
3037 PARSE_ERROR1;
3038 m->mdmreg[mreg] = mval;
3039 break;
3040 case '.':
3041 /* Set/Clear a single bit */
3042 p[0]++;
3043 bitpos = isdn_getnum(p);
3044 if ((bitpos < 0) || (bitpos > 7))
3045 PARSE_ERROR1;
3046 switch (*p[0]) {
3047 case '=':
3048 p[0]++;
3049 bval = isdn_getnum(p);
3050 if (bval < 0 || bval > 1)
3051 PARSE_ERROR1;
3052 if (bval)
3053 mval = m->mdmreg[mreg] | (1 << bitpos);
3054 else
3055 mval = m->mdmreg[mreg] & ~(1 << bitpos);
3056 if (isdn_tty_check_ats(mreg, mval, info, m))
3057 PARSE_ERROR1;
3058 m->mdmreg[mreg] = mval;
3059 break;
3060 case '?':
3061 p[0]++;
3062 isdn_tty_at_cout("\r\n", info);
3063 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
3064 info);
3065 break;
3066 default:
3067 PARSE_ERROR1;
3068 }
3069 break;
3070 case '?':
3071 p[0]++;
3072 isdn_tty_show_profile(mreg, info);
3073 break;
3074 default:
3075 PARSE_ERROR1;
3076 break;
3077 }
3078 return 0;
3079}
3080
3081/*
3082 * Perform ATA command
3083 */
3084static void
3085isdn_tty_cmd_ATA(modem_info * info)
3086{
3087 atemu *m = &info->emu;
3088 isdn_ctrl cmd;
3089 int l2;
3090
3091 if (info->msr & UART_MSR_RI) {
3092 /* Accept incoming call */
3093 info->last_dir = 0;
3094 strcpy(info->last_num, dev->num[info->drv_index]);
3095 m->mdmreg[REG_RINGCNT] = 0;
3096 info->msr &= ~UART_MSR_RI;
3097 l2 = m->mdmreg[REG_L2PROT];
3098#ifdef CONFIG_ISDN_AUDIO
3099 /* If more than one bit set in reg18, autoselect Layer2 */
3100 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
3101 if (m->mdmreg[REG_SI1I] == 1) {
3102 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
3103 l2 = ISDN_PROTO_L2_TRANS;
3104 } else
3105 l2 = ISDN_PROTO_L2_X75I;
3106 }
3107#endif
3108 cmd.driver = info->isdn_driver;
3109 cmd.command = ISDN_CMD_SETL2;
3110 cmd.arg = info->isdn_channel + (l2 << 8);
3111 info->last_l2 = l2;
3112 isdn_command(&cmd);
3113 cmd.driver = info->isdn_driver;
3114 cmd.command = ISDN_CMD_SETL3;
3115 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3116#ifdef CONFIG_ISDN_TTY_FAX
3117 if (l2 == ISDN_PROTO_L2_FAX) {
3118 cmd.parm.fax = info->fax;
3119 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3120 }
3121#endif
3122 isdn_command(&cmd);
3123 cmd.driver = info->isdn_driver;
3124 cmd.arg = info->isdn_channel;
3125 cmd.command = ISDN_CMD_ACCEPTD;
3126 info->dialing = 16;
3127 info->emu.carrierwait = 0;
3128 isdn_command(&cmd);
3129 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3130 } else
3131 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3132}
3133
3134#ifdef CONFIG_ISDN_AUDIO
3135/*
3136 * Parse AT+F.. commands
3137 */
3138static int
3139isdn_tty_cmd_PLUSF(char **p, modem_info * info)
3140{
3141 atemu *m = &info->emu;
3142 char rs[20];
3143
3144 if (!strncmp(p[0], "CLASS", 5)) {
3145 p[0] += 5;
3146 switch (*p[0]) {
3147 case '?':
3148 p[0]++;
3149 sprintf(rs, "\r\n%d",
3150 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
3151#ifdef CONFIG_ISDN_TTY_FAX
3152 if (TTY_IS_FCLASS2(info))
3153 sprintf(rs, "\r\n2");
3154 else if (TTY_IS_FCLASS1(info))
3155 sprintf(rs, "\r\n1");
3156#endif
3157 isdn_tty_at_cout(rs, info);
3158 break;
3159 case '=':
3160 p[0]++;
3161 switch (*p[0]) {
3162 case '0':
3163 p[0]++;
3164 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3165 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3166 m->mdmreg[REG_SI1] = 4;
3167 info->xmit_size =
3168 m->mdmreg[REG_PSIZE] * 16;
3169 break;
3170#ifdef CONFIG_ISDN_TTY_FAX
3171 case '1':
3172 p[0]++;
3173 if (!(dev->global_features &
3174 ISDN_FEATURE_L3_FCLASS1))
3175 PARSE_ERROR1;
3176 m->mdmreg[REG_SI1] = 1;
3177 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3178 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3179 info->xmit_size =
3180 m->mdmreg[REG_PSIZE] * 16;
3181 break;
3182 case '2':
3183 p[0]++;
3184 if (!(dev->global_features &
3185 ISDN_FEATURE_L3_FCLASS2))
3186 PARSE_ERROR1;
3187 m->mdmreg[REG_SI1] = 1;
3188 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3189 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3190 info->xmit_size =
3191 m->mdmreg[REG_PSIZE] * 16;
3192 break;
3193#endif
3194 case '8':
3195 p[0]++;
3196 /* L2 will change on dialout with si=1 */
3197 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3198 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3199 m->mdmreg[REG_SI1] = 5;
3200 info->xmit_size = VBUF;
3201 break;
3202 case '?':
3203 p[0]++;
3204 strcpy(rs, "\r\n0,");
3205#ifdef CONFIG_ISDN_TTY_FAX
3206 if (dev->global_features &
3207 ISDN_FEATURE_L3_FCLASS1)
3208 strcat(rs, "1,");
3209 if (dev->global_features &
3210 ISDN_FEATURE_L3_FCLASS2)
3211 strcat(rs, "2,");
3212#endif
3213 strcat(rs, "8");
3214 isdn_tty_at_cout(rs, info);
3215 break;
3216 default:
3217 PARSE_ERROR1;
3218 }
3219 break;
3220 default:
3221 PARSE_ERROR1;
3222 }
3223 return 0;
3224 }
3225#ifdef CONFIG_ISDN_TTY_FAX
3226 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3227#else
3228 PARSE_ERROR1;
3229#endif
3230}
3231
3232/*
3233 * Parse AT+V.. commands
3234 */
3235static int
3236isdn_tty_cmd_PLUSV(char **p, modem_info * info)
3237{
3238 atemu *m = &info->emu;
3239 isdn_ctrl cmd;
3240 static char *vcmd[] =
3241 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
3242 int i;
3243 int par1;
3244 int par2;
3245 char rs[20];
3246
3247 i = 0;
3248 while (vcmd[i]) {
3249 if (!strncmp(vcmd[i], p[0], 2)) {
3250 p[0] += 2;
3251 break;
3252 }
3253 i++;
3254 }
3255 switch (i) {
3256 case 0:
3257 /* AT+VNH - Auto hangup feature */
3258 switch (*p[0]) {
3259 case '?':
3260 p[0]++;
3261 isdn_tty_at_cout("\r\n1", info);
3262 break;
3263 case '=':
3264 p[0]++;
3265 switch (*p[0]) {
3266 case '1':
3267 p[0]++;
3268 break;
3269 case '?':
3270 p[0]++;
3271 isdn_tty_at_cout("\r\n1", info);
3272 break;
3273 default:
3274 PARSE_ERROR1;
3275 }
3276 break;
3277 default:
3278 PARSE_ERROR1;
3279 }
3280 break;
3281 case 1:
3282 /* AT+VIP - Reset all voice parameters */
3283 isdn_tty_modem_reset_vpar(m);
3284 break;
3285 case 2:
3286 /* AT+VLS - Select device, accept incoming call */
3287 switch (*p[0]) {
3288 case '?':
3289 p[0]++;
3290 sprintf(rs, "\r\n%d", m->vpar[0]);
3291 isdn_tty_at_cout(rs, info);
3292 break;
3293 case '=':
3294 p[0]++;
3295 switch (*p[0]) {
3296 case '0':
3297 p[0]++;
3298 m->vpar[0] = 0;
3299 break;
3300 case '2':
3301 p[0]++;
3302 m->vpar[0] = 2;
3303 break;
3304 case '?':
3305 p[0]++;
3306 isdn_tty_at_cout("\r\n0,2", info);
3307 break;
3308 default:
3309 PARSE_ERROR1;
3310 }
3311 break;
3312 default:
3313 PARSE_ERROR1;
3314 }
3315 break;
3316 case 3:
3317 /* AT+VRX - Start recording */
3318 if (!m->vpar[0])
3319 PARSE_ERROR1;
3320 if (info->online != 1) {
3321 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3322 return 1;
3323 }
3324 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3325 if (!info->dtmf_state) {
3326 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3327 PARSE_ERROR1;
3328 }
3329 info->silence_state = isdn_audio_silence_init(info->silence_state);
3330 if (!info->silence_state) {
3331 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3332 PARSE_ERROR1;
3333 }
3334 if (m->vpar[3] < 5) {
3335 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3336 if (!info->adpcmr) {
3337 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3338 PARSE_ERROR1;
3339 }
3340 }
3341#ifdef ISDN_DEBUG_AT
3342 printk(KERN_DEBUG "AT: +VRX\n");
3343#endif
3344 info->vonline |= 1;
3345 isdn_tty_modem_result(RESULT_CONNECT, info);
3346 return 0;
3347 break;
3348 case 4:
3349 /* AT+VSD - Silence detection */
3350 switch (*p[0]) {
3351 case '?':
3352 p[0]++;
3353 sprintf(rs, "\r\n<%d>,<%d>",
3354 m->vpar[1],
3355 m->vpar[2]);
3356 isdn_tty_at_cout(rs, info);
3357 break;
3358 case '=':
3359 p[0]++;
3360 if ((*p[0]>='0') && (*p[0]<='9')) {
3361 par1 = isdn_getnum(p);
3362 if ((par1 < 0) || (par1 > 31))
3363 PARSE_ERROR1;
3364 if (*p[0] != ',')
3365 PARSE_ERROR1;
3366 p[0]++;
3367 par2 = isdn_getnum(p);
3368 if ((par2 < 0) || (par2 > 255))
3369 PARSE_ERROR1;
3370 m->vpar[1] = par1;
3371 m->vpar[2] = par2;
3372 break;
3373 } else
3374 if (*p[0] == '?') {
3375 p[0]++;
3376 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3377 info);
3378 break;
3379 } else
3380 PARSE_ERROR1;
3381 break;
3382 default:
3383 PARSE_ERROR1;
3384 }
3385 break;
3386 case 5:
3387 /* AT+VSM - Select compression */
3388 switch (*p[0]) {
3389 case '?':
3390 p[0]++;
3391 sprintf(rs, "\r\n<%d>,<%d><8000>",
3392 m->vpar[3],
3393 m->vpar[1]);
3394 isdn_tty_at_cout(rs, info);
3395 break;
3396 case '=':
3397 p[0]++;
3398 switch (*p[0]) {
3399 case '2':
3400 case '3':
3401 case '4':
3402 case '5':
3403 case '6':
3404 par1 = isdn_getnum(p);
3405 if ((par1 < 2) || (par1 > 6))
3406 PARSE_ERROR1;
3407 m->vpar[3] = par1;
3408 break;
3409 case '?':
3410 p[0]++;
3411 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3412 info);
3413 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3414 info);
3415 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3416 info);
3417 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3418 info);
3419 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3420 info);
3421 break;
3422 default:
3423 PARSE_ERROR1;
3424 }
3425 break;
3426 default:
3427 PARSE_ERROR1;
3428 }
3429 break;
3430 case 6:
3431 /* AT+VTX - Start sending */
3432 if (!m->vpar[0])
3433 PARSE_ERROR1;
3434 if (info->online != 1) {
3435 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3436 return 1;
3437 }
3438 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3439 if (!info->dtmf_state) {
3440 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3441 PARSE_ERROR1;
3442 }
3443 if (m->vpar[3] < 5) {
3444 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3445 if (!info->adpcms) {
3446 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3447 PARSE_ERROR1;
3448 }
3449 }
3450#ifdef ISDN_DEBUG_AT
3451 printk(KERN_DEBUG "AT: +VTX\n");
3452#endif
3453 m->lastDLE = 0;
3454 info->vonline |= 2;
3455 isdn_tty_modem_result(RESULT_CONNECT, info);
3456 return 0;
3457 break;
3458 case 7:
3459 /* AT+VDD - DTMF detection */
3460 switch (*p[0]) {
3461 case '?':
3462 p[0]++;
3463 sprintf(rs, "\r\n<%d>,<%d>",
3464 m->vpar[4],
3465 m->vpar[5]);
3466 isdn_tty_at_cout(rs, info);
3467 break;
3468 case '=':
3469 p[0]++;
3470 if ((*p[0]>='0') && (*p[0]<='9')) {
3471 if (info->online != 1)
3472 PARSE_ERROR1;
3473 par1 = isdn_getnum(p);
3474 if ((par1 < 0) || (par1 > 15))
3475 PARSE_ERROR1;
3476 if (*p[0] != ',')
3477 PARSE_ERROR1;
3478 p[0]++;
3479 par2 = isdn_getnum(p);
3480 if ((par2 < 0) || (par2 > 255))
3481 PARSE_ERROR1;
3482 m->vpar[4] = par1;
3483 m->vpar[5] = par2;
3484 cmd.driver = info->isdn_driver;
3485 cmd.command = ISDN_CMD_AUDIO;
3486 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3487 cmd.parm.num[0] = par1;
3488 cmd.parm.num[1] = par2;
3489 isdn_command(&cmd);
3490 break;
3491 } else
3492 if (*p[0] == '?') {
3493 p[0]++;
3494 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3495 info);
3496 break;
3497 } else
3498 PARSE_ERROR1;
3499 break;
3500 default:
3501 PARSE_ERROR1;
3502 }
3503 break;
3504 default:
3505 PARSE_ERROR1;
3506 }
3507 return 0;
3508}
3509#endif /* CONFIG_ISDN_AUDIO */
3510
3511/*
3512 * Parse and perform an AT-command-line.
3513 */
3514static void
3515isdn_tty_parse_at(modem_info * info)
3516{
3517 atemu *m = &info->emu;
3518 char *p;
f417f5e4 3519 char ds[ISDN_MSNLEN];
1da177e4
LT		 3520
3521#ifdef ISDN_DEBUG_AT
3522 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3523#endif
3524 for (p = &m->mdmcmd[2]; *p;) {
3525 switch (*p) {
3526 case ' ':
3527 p++;
3528 break;
3529 case 'A':
3530 /* A - Accept incoming call */
3531 p++;
3532 isdn_tty_cmd_ATA(info);
3533 return;
3534 break;
3535 case 'D':
3536 /* D - Dial */
3537 if (info->msr & UART_MSR_DCD)
3538 PARSE_ERROR;
3539 if (info->msr & UART_MSR_RI) {
3540 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3541 return;
3542 }
3543 isdn_tty_getdial(++p, ds, sizeof ds);
3544 p += strlen(p);
3545 if (!strlen(m->msn))
3546 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3547 else if (strlen(ds))
3548 isdn_tty_dial(ds, info, m);
3549 else
3550 PARSE_ERROR;
3551 return;
3552 case 'E':
3553 /* E - Turn Echo on/off */
3554 p++;
3555 switch (isdn_getnum(&p)) {
3556 case 0:
3557 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
3558 break;
3559 case 1:
3560 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3561 break;
3562 default:
3563 PARSE_ERROR;
3564 }
3565 break;
3566 case 'H':
3567 /* H - On/Off-hook */
3568 p++;
3569 switch (*p) {
3570 case '0':
3571 p++;
3572 isdn_tty_on_hook(info);
3573 break;
3574 case '1':
3575 p++;
3576 isdn_tty_off_hook();
3577 break;
3578 default:
3579 isdn_tty_on_hook(info);
3580 break;
3581 }
3582 break;
3583 case 'I':
3584 /* I - Information */
3585 p++;
3586 isdn_tty_at_cout("\r\nLinux ISDN", info);
3587 switch (*p) {
3588 case '0':
3589 case '1':
3590 p++;
3591 break;
3592 case '2':
3593 p++;
3594 isdn_tty_report(info);
3595 break;
3596 case '3':
3597 p++;
f417f5e4 3598 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
1da177e4
LT		 3599 isdn_tty_at_cout(ds, info);
3600 break;
3601 default:;
3602 }
3603 break;
3604#ifdef DUMMY_HAYES_AT
3605 case 'L':
3606 case 'M':
3607 /* only for be compilant with common scripts */
3608 /* no function */
3609 p++;
3610 isdn_getnum(&p);
3611 break;
3612#endif
3613 case 'O':
3614 /* O - Go online */
3615 p++;
3616 if (info->msr & UART_MSR_DCD)
3617 /* if B-Channel is up */
3618 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT:RESULT_CONNECT64000, info);
3619 else
3620 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3621 return;
3622 case 'Q':
3623 /* Q - Turn Emulator messages on/off */
3624 p++;
3625 switch (isdn_getnum(&p)) {
3626 case 0:
3627 m->mdmreg[REG_RESP] |= BIT_RESP;
3628 break;
3629 case 1:
3630 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3631 break;
3632 default:
3633 PARSE_ERROR;
3634 }
3635 break;
3636 case 'S':
3637 /* S - Set/Get Register */
3638 p++;
3639 if (isdn_tty_cmd_ATS(&p, info))
3640 return;
3641 break;
3642 case 'V':
3643 /* V - Numeric or ASCII Emulator-messages */
3644 p++;
3645 switch (isdn_getnum(&p)) {
3646 case 0:
3647 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3648 break;
3649 case 1:
3650 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
3651 break;
3652 default:
3653 PARSE_ERROR;
3654 }
3655 break;
3656 case 'Z':
3657 /* Z - Load Registers from Profile */
3658 p++;
3659 if (info->msr & UART_MSR_DCD) {
3660 info->online = 0;
3661 isdn_tty_on_hook(info);
3662 }
3663 isdn_tty_modem_reset_regs(info, 1);
3664 break;
3665 case '+':
3666 p++;
3667 switch (*p) {
3668#ifdef CONFIG_ISDN_AUDIO
3669 case 'F':
3670 p++;
3671 if (isdn_tty_cmd_PLUSF(&p, info))
3672 return;
3673 break;
3674 case 'V':
3675 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3676 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3677 PARSE_ERROR;
3678 p++;
3679 if (isdn_tty_cmd_PLUSV(&p, info))
3680 return;
3681 break;
3682#endif /* CONFIG_ISDN_AUDIO */
3683 case 'S': /* SUSPEND */
3684 p++;
3685 isdn_tty_get_msnstr(ds, &p);
3686 isdn_tty_suspend(ds, info, m);
3687 break;
3688 case 'R': /* RESUME */
3689 p++;
3690 isdn_tty_get_msnstr(ds, &p);
3691 isdn_tty_resume(ds, info, m);
3692 break;
3693 case 'M': /* MESSAGE */
3694 p++;
3695 isdn_tty_send_msg(info, m, p);
3696 break;
3697 default:
3698 PARSE_ERROR;
3699 }
3700 break;
3701 case '&':
3702 p++;
3703 if (isdn_tty_cmd_ATand(&p, info))
3704 return;
3705 break;
3706 default:
3707 PARSE_ERROR;
3708 }
3709 }
3710#ifdef CONFIG_ISDN_AUDIO
3711 if (!info->vonline)
3712#endif
3713 isdn_tty_modem_result(RESULT_OK, info);
3714}
3715
3716/* Need own toupper() because standard-toupper is not available
3717 * within modules.
3718 */
3719#define my_toupper(c) (((c>='a')&&(c<='z'))?(c&0xdf):c)
3720
3721/*
3722 * Perform line-editing of AT-commands
3723 *
3724 * Parameters:
3725 * p inputbuffer
3726 * count length of buffer
3727 * channel index to line (minor-device)
3728 */
3729static int
3730isdn_tty_edit_at(const char *p, int count, modem_info * info)
3731{
3732 atemu *m = &info->emu;
3733 int total = 0;
3734 u_char c;
3735 char eb[2];
3736 int cnt;
3737
3738 for (cnt = count; cnt > 0; p++, cnt--) {
3739 c = *p;
3740 total++;
3741 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3742 /* Separator (CR or LF) */
3743 m->mdmcmd[m->mdmcmdl] = 0;
3744 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3745 eb[0] = c;
3746 eb[1] = 0;
3747 isdn_tty_at_cout(eb, info);
3748 }
3749 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3750 isdn_tty_parse_at(info);
3751 m->mdmcmdl = 0;
3752 continue;
3753 }
3754 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3755 /* Backspace-Function */
3756 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3757 if (m->mdmcmdl)
3758 m->mdmcmdl--;
3759 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3760 isdn_tty_at_cout("\b", info);
3761 }
3762 continue;
3763 }
3764 if (cmdchar(c)) {
3765 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3766 eb[0] = c;
3767 eb[1] = 0;
3768 isdn_tty_at_cout(eb, info);
3769 }
3770 if (m->mdmcmdl < 255) {
3771 c = my_toupper(c);
3772 switch (m->mdmcmdl) {
3773 case 1:
3774 if (c == 'T') {
3775 m->mdmcmd[m->mdmcmdl] = c;
3776 m->mdmcmd[++m->mdmcmdl] = 0;
3777 break;
3778 } else
3779 m->mdmcmdl = 0;
3780 /* Fall through, check for 'A' */
3781 case 0:
3782 if (c == 'A') {
3783 m->mdmcmd[m->mdmcmdl] = c;
3784 m->mdmcmd[++m->mdmcmdl] = 0;
3785 }
3786 break;
3787 default:
3788 m->mdmcmd[m->mdmcmdl] = c;
3789 m->mdmcmd[++m->mdmcmdl] = 0;
3790 }
3791 }
3792 }
3793 }
3794 return total;
3795}
3796
3797/*
3798 * Switch all modem-channels who are online and got a valid
3799 * escape-sequence 1.5 seconds ago, to command-mode.
3800 * This function is called every second via timer-interrupt from within
3801 * timer-dispatcher isdn_timer_function()
3802 */
3803void
3804isdn_tty_modem_escape(void)
3805{
3806 int ton = 0;
3807 int i;
3808 int midx;
3809
3810 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
3811 if (USG_MODEM(dev->usage[i]))
3812 if ((midx = dev->m_idx[i]) >= 0) {
3813 modem_info *info = &dev->mdm.info[midx];
3814 if (info->online) {
3815 ton = 1;
3816 if ((info->emu.pluscount == 3) &&
3817 time_after(jiffies , info->emu.lastplus + PLUSWAIT2)) {
3818 info->emu.pluscount = 0;
3819 info->online = 0;
3820 isdn_tty_modem_result(RESULT_OK, info);
3821 }
3822 }
3823 }
3824 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3825}
3826
3827/*
3828 * Put a RING-message to all modem-channels who have the RI-bit set.
3829 * This function is called every second via timer-interrupt from within
3830 * timer-dispatcher isdn_timer_function()
3831 */
3832void
3833isdn_tty_modem_ring(void)
3834{
3835 int ton = 0;
3836 int i;
3837
3838 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3839 modem_info *info = &dev->mdm.info[i];
3840 if (info->msr & UART_MSR_RI) {
3841 ton = 1;
3842 isdn_tty_modem_result(RESULT_RING, info);
3843 }
3844 }
3845 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3846}
3847
3848/*
3849 * For all online tty's, try sending data to
3850 * the lower levels.
3851 */
3852void
3853isdn_tty_modem_xmit(void)
3854{
3855 int ton = 1;
3856 int i;
3857
3858 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3859 modem_info *info = &dev->mdm.info[i];
3860 if (info->online) {
3861 ton = 1;
3862 isdn_tty_senddown(info);
3863 isdn_tty_tint(info);
3864 }
3865 }
3866 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3867}
3868
3869/*
3870 * Check all channels if we have a 'no carrier' timeout.
3871 * Timeout value is set by Register S7.
3872 */
3873void
3874isdn_tty_carrier_timeout(void)
3875{
3876 int ton = 0;
3877 int i;
3878
3879 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3880 modem_info *info = &dev->mdm.info[i];
3881 if (info->dialing) {
3882 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3883 info->dialing = 0;
3884 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3885 isdn_tty_modem_hup(info, 1);
3886 }
3887 else
3888 ton = 1;
3889 }
3890 }
3891 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);
3892}
Clone of davem's net-next-2.6 tree