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TTY: i4l, add tty install
[deliverable/linux.git] / drivers / isdn / i4l / isdn_tty.c
CommitLineData
1ca6711e 1/*
1da177e4
LT		 2 * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
3 *
4 * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
5 * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11#undef ISDN_TTY_STAT_DEBUG
12
1da177e4 13#include <linux/isdn.h>
6776a2f0 14#include <linux/serial.h> /* ASYNC_* flags */
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
1da177e4
LT		 51/* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
52 * to stuff incoming data directly into a tty's flip-buffer. This
53 * is done to speed up tty-receiving if the receive-queue is empty.
54 * This routine MUST be called with interrupts off.
55 * Return:
56 * 1 = Success
57 * 0 = Failure, data has to be buffered and later processed by
58 * isdn_tty_readmodem().
59 */
60static int
475be4d8 61isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
1da177e4
LT		 62{
63 int c;
64 int len;
65 struct tty_struct *tty;
33f0f88f 66 char last;
1da177e4 67
37630f40
JS		 68 if (!info->online)
69 return 0;
70
ba43294d 71 tty = info->port.tty;
37630f40
JS		 72 if (!tty)
73 return 0;
74
75 if (!(info->mcr & UART_MCR_RTS))
76 return 0;
77
78 len = skb->len
1da177e4 79#ifdef CONFIG_ISDN_AUDIO
37630f40 80 + ISDN_AUDIO_SKB_DLECOUNT(skb)
1da177e4 81#endif
37630f40
JS		 82 ;
83
84 c = tty_buffer_request_room(tty, len);
85 if (c < len)
86 return 0;
33f0f88f 87
1da177e4 88#ifdef CONFIG_ISDN_AUDIO
37630f40
JS		 89 if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
90 int l = skb->len;
91 unsigned char *dp = skb->data;
92 while (--l) {
93 if (*dp == DLE)
94 tty_insert_flip_char(tty, DLE, 0);
95 tty_insert_flip_char(tty, *dp++, 0);
96 }
97 if (*dp == DLE)
98 tty_insert_flip_char(tty, DLE, 0);
99 last = *dp;
100 } else {
1da177e4 101#endif
37630f40
JS		 102 if (len > 1)
103 tty_insert_flip_string(tty, skb->data, len - 1);
104 last = skb->data[len - 1];
105#ifdef CONFIG_ISDN_AUDIO
1da177e4 106 }
37630f40
JS		 107#endif
108 if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
109 tty_insert_flip_char(tty, last, 0xFF);
110 else
111 tty_insert_flip_char(tty, last, TTY_NORMAL);
112 tty_flip_buffer_push(tty);
113 kfree_skb(skb);
114
115 return 1;
1da177e4
LT		 116}
117
118/* isdn_tty_readmodem() is called periodically from within timer-interrupt.
119 * It tries getting received data from the receive queue an stuff it into
120 * the tty's flip-buffer.
121 */
122void
123isdn_tty_readmodem(void)
124{
125 int resched = 0;
126 int midx;
127 int i;
1da177e4
LT		 128 int r;
129 struct tty_struct *tty;
130 modem_info *info;
131
132 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
37630f40
JS		 133 midx = dev->m_idx[i];
134 if (midx < 0)
135 continue;
136
137 info = &dev->mdm.info[midx];
138 if (!info->online)
139 continue;
140
141 r = 0;
1da177e4 142#ifdef CONFIG_ISDN_AUDIO
37630f40
JS		 143 isdn_audio_eval_dtmf(info);
144 if ((info->vonline & 1) && (info->emu.vpar[1]))
145 isdn_audio_eval_silence(info);
146#endif
ba43294d 147 tty = info->port.tty;
37630f40
JS		 148 if (tty) {
149 if (info->mcr & UART_MCR_RTS) {
150 /* CISCO AsyncPPP Hack */
151 if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
152 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
153 else
154 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
155 if (r)
156 tty_flip_buffer_push(tty);
157 } else
158 r = 1;
159 } else
160 r = 1;
161 if (r) {
162 info->rcvsched = 0;
163 resched = 1;
164 } else
165 info->rcvsched = 1;
1da177e4
LT		 166 }
167 if (!resched)
168 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
169}
170
171int
172isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
173{
174 ulong flags;
175 int midx;
176#ifdef CONFIG_ISDN_AUDIO
177 int ifmt;
178#endif
179 modem_info *info;
180
181 if ((midx = dev->m_idx[i]) < 0) {
182 /* if midx is invalid, packet is not for tty */
183 return 0;
184 }
185 info = &dev->mdm.info[midx];
186#ifdef CONFIG_ISDN_AUDIO
187 ifmt = 1;
475be4d8 188
1da177e4
LT		 189 if ((info->vonline) && (!info->emu.vpar[4]))
190 isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
191 if ((info->vonline & 1) && (info->emu.vpar[1]))
192 isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
193#endif
194 if ((info->online < 2)
195#ifdef CONFIG_ISDN_AUDIO
196 && (!(info->vonline & 1))
197#endif
198 ) {
199 /* If Modem not listening, drop data */
200 kfree_skb(skb);
201 return 1;
202 }
203 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
204 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
205 /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
206 if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
207 skb_pull(skb, 4);
208 else
209 if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
210 skb_pull(skb, 2);
211 } else
212 /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
213 if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
214 skb_pull(skb, 4);
215 }
216#ifdef CONFIG_ISDN_AUDIO
217 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
218 ISDN_AUDIO_SKB_LOCK(skb) = 0;
219 if (info->vonline & 1) {
220 /* voice conversion/compression */
221 switch (info->emu.vpar[3]) {
475be4d8
JP		 222 case 2:
223 case 3:
224 case 4:
225 /* adpcm
226 * Since compressed data takes less
227 * space, we can overwrite the buffer.
228 */
229 skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
230 ifmt,
231 skb->data,
232 skb->data,
233 skb->len));
234 break;
235 case 5:
236 /* a-law */
237 if (!ifmt)
238 isdn_audio_ulaw2alaw(skb->data, skb->len);
239 break;
240 case 6:
241 /* u-law */
242 if (ifmt)
243 isdn_audio_alaw2ulaw(skb->data, skb->len);
244 break;
1da177e4
LT		 245 }
246 ISDN_AUDIO_SKB_DLECOUNT(skb) =
247 isdn_tty_countDLE(skb->data, skb->len);
248 }
249#ifdef CONFIG_ISDN_TTY_FAX
250 else {
251 if (info->faxonline & 2) {
252 isdn_tty_fax_bitorder(info, skb);
253 ISDN_AUDIO_SKB_DLECOUNT(skb) =
254 isdn_tty_countDLE(skb->data, skb->len);
255 }
256 }
257#endif
258#endif
33f0f88f 259 /* Try to deliver directly via tty-buf if queue is empty */
1da177e4
LT		 260 spin_lock_irqsave(&info->readlock, flags);
261 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
262 if (isdn_tty_try_read(info, skb)) {
263 spin_unlock_irqrestore(&info->readlock, flags);
264 return 1;
265 }
266 /* Direct deliver failed or queue wasn't empty.
267 * Queue up for later dequeueing via timer-irq.
268 */
269 __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
270 dev->drv[di]->rcvcount[channel] +=
271 (skb->len
272#ifdef CONFIG_ISDN_AUDIO
273 + ISDN_AUDIO_SKB_DLECOUNT(skb)
274#endif
275 );
276 spin_unlock_irqrestore(&info->readlock, flags);
277 /* Schedule dequeuing */
278 if ((dev->modempoll) && (info->rcvsched))
279 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
280 return 1;
281}
282
3e206b0a 283static void
475be4d8 284isdn_tty_cleanup_xmit(modem_info *info)
1da177e4
LT		 285{
286 skb_queue_purge(&info->xmit_queue);
287#ifdef CONFIG_ISDN_AUDIO
288 skb_queue_purge(&info->dtmf_queue);
289#endif
290}
291
292static void
475be4d8 293isdn_tty_tint(modem_info *info)
1da177e4
LT		 294{
295 struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
296 int len, slen;
297
298 if (!skb)
299 return;
300 len = skb->len;
301 if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
302 info->isdn_channel, 1, skb)) == len) {
ba43294d 303 struct tty_struct *tty = info->port.tty;
1da177e4
LT		 304 info->send_outstanding++;
305 info->msr &= ~UART_MSR_CTS;
306 info->lsr &= ~UART_LSR_TEMT;
307 tty_wakeup(tty);
308 return;
309 }
310 if (slen < 0) {
311 /* Error: no channel, already shutdown, or wrong parameter */
312 dev_kfree_skb(skb);
313 return;
314 }
315 skb_queue_head(&info->xmit_queue, skb);
316}
317
318#ifdef CONFIG_ISDN_AUDIO
319static int
320isdn_tty_countDLE(unsigned char *buf, int len)
321{
322 int count = 0;
323
324 while (len--)
325 if (*buf++ == DLE)
326 count++;
327 return count;
328}
329
330/* This routine is called from within isdn_tty_write() to perform
331 * DLE-decoding when sending audio-data.
332 */
333static int
475be4d8 334isdn_tty_handleDLEdown(modem_info *info, atemu *m, int len)
1da177e4 335{
82e46b31 336 unsigned char *p = &info->port.xmit_buf[info->xmit_count];
1da177e4
LT		 337 int count = 0;
338
339 while (len > 0) {
340 if (m->lastDLE) {
341 m->lastDLE = 0;
342 switch (*p) {
475be4d8
JP		 343 case DLE:
344 /* Escape code */
345 if (len > 1)
346 memmove(p, p + 1, len - 1);
347 p--;
348 count++;
349 break;
350 case ETX:
351 /* End of data */
352 info->vonline |= 4;
353 return count;
354 case DC4:
355 /* Abort RX */
356 info->vonline &= ~1;
1da177e4 357#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 358 printk(KERN_DEBUG
359 "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
360 info->line);
1da177e4 361#endif
475be4d8
JP		 362 isdn_tty_at_cout("\020\003", info);
363 if (!info->vonline) {
1da177e4 364#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 365 printk(KERN_DEBUG
366 "DLEdown: send VCON on ttyI%d\n",
367 info->line);
1da177e4 368#endif
475be4d8
JP		 369 isdn_tty_at_cout("\r\nVCON\r\n", info);
370 }
371 /* Fall through */
372 case 'q':
373 case 's':
374 /* Silence */
375 if (len > 1)
376 memmove(p, p + 1, len - 1);
377 p--;
378 break;
1da177e4
LT		 379 }
380 } else {
381 if (*p == DLE)
382 m->lastDLE = 1;
383 else
384 count++;
385 }
386 p++;
387 len--;
388 }
389 if (len < 0) {
390 printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
391 return 0;
392 }
393 return count;
394}
395
396/* This routine is called from within isdn_tty_write() when receiving
397 * audio-data. It interrupts receiving, if an character other than
398 * ^S or ^Q is sent.
399 */
400static int
401isdn_tty_end_vrx(const char *buf, int c)
402{
403 char ch;
404
405 while (c--) {
406 ch = *buf;
407 if ((ch != 0x11) && (ch != 0x13))
408 return 1;
409 buf++;
410 }
411 return 0;
412}
413
414static int voice_cf[7] =
415{0, 0, 4, 3, 2, 0, 0};
416
417#endif /* CONFIG_ISDN_AUDIO */
418
419/* isdn_tty_senddown() is called either directly from within isdn_tty_write()
420 * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
421 * outgoing data from the tty's xmit-buffer, handles voice-decompression or
422 * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
423 */
424static void
475be4d8 425isdn_tty_senddown(modem_info *info)
1da177e4
LT		 426{
427 int buflen;
428 int skb_res;
429#ifdef CONFIG_ISDN_AUDIO
430 int audio_len;
431#endif
432 struct sk_buff *skb;
433
434#ifdef CONFIG_ISDN_AUDIO
435 if (info->vonline & 4) {
436 info->vonline &= ~6;
437 if (!info->vonline) {
438#ifdef ISDN_DEBUG_MODEM_VOICE
439 printk(KERN_DEBUG
440 "senddown: send VCON on ttyI%d\n",
441 info->line);
442#endif
443 isdn_tty_at_cout("\r\nVCON\r\n", info);
444 }
445 }
446#endif
447 if (!(buflen = info->xmit_count))
448 return;
475be4d8 449 if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
1da177e4 450 info->msr &= ~UART_MSR_CTS;
475be4d8 451 info->lsr &= ~UART_LSR_TEMT;
1da177e4
LT		 452 /* info->xmit_count is modified here and in isdn_tty_write().
453 * So we return here if isdn_tty_write() is in the
454 * critical section.
455 */
456 atomic_inc(&info->xmit_lock);
457 if (!(atomic_dec_and_test(&info->xmit_lock)))
458 return;
459 if (info->isdn_driver < 0) {
460 info->xmit_count = 0;
461 return;
462 }
463 skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
464#ifdef CONFIG_ISDN_AUDIO
465 if (info->vonline & 2)
466 audio_len = buflen * voice_cf[info->emu.vpar[3]];
467 else
468 audio_len = 0;
469 skb = dev_alloc_skb(skb_res + buflen + audio_len);
470#else
471 skb = dev_alloc_skb(skb_res + buflen);
472#endif
473 if (!skb) {
474 printk(KERN_WARNING
475 "isdn_tty: Out of memory in ttyI%d senddown\n",
476 info->line);
477 return;
478 }
479 skb_reserve(skb, skb_res);
82e46b31 480 memcpy(skb_put(skb, buflen), info->port.xmit_buf, buflen);
1da177e4
LT		 481 info->xmit_count = 0;
482#ifdef CONFIG_ISDN_AUDIO
483 if (info->vonline & 2) {
484 /* For now, ifmt is fixed to 1 (alaw), since this
485 * is used with ISDN everywhere in the world, except
486 * US, Canada and Japan.
487 * Later, when US-ISDN protocols are implemented,
488 * this setting will depend on the D-channel protocol.
489 */
490 int ifmt = 1;
491
492 /* voice conversion/decompression */
493 switch (info->emu.vpar[3]) {
475be4d8
JP		 494 case 2:
495 case 3:
496 case 4:
497 /* adpcm, compatible to ZyXel 1496 modem
498 * with ROM revision 6.01
499 */
500 audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
501 ifmt,
502 skb->data,
503 skb_put(skb, audio_len),
504 buflen);
505 skb_pull(skb, buflen);
506 skb_trim(skb, audio_len);
507 break;
508 case 5:
509 /* a-law */
510 if (!ifmt)
511 isdn_audio_alaw2ulaw(skb->data,
512 buflen);
513 break;
514 case 6:
515 /* u-law */
516 if (ifmt)
517 isdn_audio_ulaw2alaw(skb->data,
518 buflen);
519 break;
1da177e4
LT		 520 }
521 }
522#endif /* CONFIG_ISDN_AUDIO */
523 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
524 /* Add T.70 simplified header */
525 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT)
526 memcpy(skb_push(skb, 2), "\1\0", 2);
527 else
528 memcpy(skb_push(skb, 4), "\1\0\1\0", 4);
529 }
530 skb_queue_tail(&info->xmit_queue, skb);
531}
532
533/************************************************************
534 *
535 * Modem-functions
536 *
537 * mostly "stolen" from original Linux-serial.c and friends.
538 *
539 ************************************************************/
540
541/* The next routine is called once from within timer-interrupt
542 * triggered within isdn_tty_modem_ncarrier(). It calls
543 * isdn_tty_modem_result() to stuff a "NO CARRIER" Message
33f0f88f 544 * into the tty's buffer.
1da177e4
LT		 545 */
546static void
547isdn_tty_modem_do_ncarrier(unsigned long data)
548{
549 modem_info *info = (modem_info *) data;
550 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
551}
552
553/* Next routine is called, whenever the DTR-signal is raised.
554 * It checks the ncarrier-flag, and triggers the above routine
555 * when necessary. The ncarrier-flag is set, whenever DTR goes
556 * low.
557 */
558static void
475be4d8 559isdn_tty_modem_ncarrier(modem_info *info)
1da177e4
LT		 560{
561 if (info->ncarrier) {
562 info->nc_timer.expires = jiffies + HZ;
563 add_timer(&info->nc_timer);
564 }
565}
566
567/*
568 * return the usage calculated by si and layer 2 protocol
569 */
3e206b0a 570static int
1da177e4
LT		 571isdn_calc_usage(int si, int l2)
572{
573 int usg = ISDN_USAGE_MODEM;
574
575#ifdef CONFIG_ISDN_AUDIO
576 if (si == 1) {
475be4d8
JP		 577 switch (l2) {
578 case ISDN_PROTO_L2_MODEM:
579 usg = ISDN_USAGE_MODEM;
580 break;
1da177e4 581#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 582 case ISDN_PROTO_L2_FAX:
583 usg = ISDN_USAGE_FAX;
584 break;
1da177e4 585#endif
475be4d8
JP		 586 case ISDN_PROTO_L2_TRANS:
587 default:
588 usg = ISDN_USAGE_VOICE;
589 break;
1da177e4
LT		 590 }
591 }
592#endif
475be4d8 593 return (usg);
1da177e4
LT		 594}
595
596/* isdn_tty_dial() performs dialing of a tty an the necessary
597 * setup of the lower levels before that.
598 */
599static void
475be4d8 600isdn_tty_dial(char *n, modem_info *info, atemu *m)
1da177e4
LT		 601{
602 int usg = ISDN_USAGE_MODEM;
603 int si = 7;
604 int l2 = m->mdmreg[REG_L2PROT];
605 u_long flags;
606 isdn_ctrl cmd;
607 int i;
608 int j;
609
610 for (j = 7; j >= 0; j--)
611 if (m->mdmreg[REG_SI1] & (1 << j)) {
612 si = bit2si[j];
613 break;
614 }
615 usg = isdn_calc_usage(si, l2);
616#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 617 if ((si == 1) &&
618 (l2 != ISDN_PROTO_L2_MODEM)
1da177e4 619#ifdef CONFIG_ISDN_TTY_FAX
475be4d8 620 && (l2 != ISDN_PROTO_L2_FAX)
1da177e4
LT		 621#endif
622 ) {
623 l2 = ISDN_PROTO_L2_TRANS;
624 usg = ISDN_USAGE_VOICE;
625 }
626#endif
627 m->mdmreg[REG_SI1I] = si2bit[si];
628 spin_lock_irqsave(&dev->lock, flags);
629 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
630 if (i < 0) {
631 spin_unlock_irqrestore(&dev->lock, flags);
632 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
633 } else {
634 info->isdn_driver = dev->drvmap[i];
635 info->isdn_channel = dev->chanmap[i];
636 info->drv_index = i;
637 dev->m_idx[i] = info->line;
638 dev->usage[i] |= ISDN_USAGE_OUTGOING;
639 info->last_dir = 1;
640 strcpy(info->last_num, n);
641 isdn_info_update();
642 spin_unlock_irqrestore(&dev->lock, flags);
643 cmd.driver = info->isdn_driver;
644 cmd.arg = info->isdn_channel;
645 cmd.command = ISDN_CMD_CLREAZ;
646 isdn_command(&cmd);
647 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
648 cmd.driver = info->isdn_driver;
649 cmd.command = ISDN_CMD_SETEAZ;
650 isdn_command(&cmd);
651 cmd.driver = info->isdn_driver;
652 cmd.command = ISDN_CMD_SETL2;
653 info->last_l2 = l2;
654 cmd.arg = info->isdn_channel + (l2 << 8);
655 isdn_command(&cmd);
656 cmd.driver = info->isdn_driver;
657 cmd.command = ISDN_CMD_SETL3;
658 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
659#ifdef CONFIG_ISDN_TTY_FAX
660 if (l2 == ISDN_PROTO_L2_FAX) {
661 cmd.parm.fax = info->fax;
662 info->fax->direction = ISDN_TTY_FAX_CONN_OUT;
663 }
664#endif
665 isdn_command(&cmd);
666 cmd.driver = info->isdn_driver;
667 cmd.arg = info->isdn_channel;
668 sprintf(cmd.parm.setup.phone, "%s", n);
669 sprintf(cmd.parm.setup.eazmsn, "%s",
670 isdn_map_eaz2msn(m->msn, info->isdn_driver));
671 cmd.parm.setup.si1 = si;
672 cmd.parm.setup.si2 = m->mdmreg[REG_SI2];
673 cmd.command = ISDN_CMD_DIAL;
674 info->dialing = 1;
675 info->emu.carrierwait = 0;
676 strcpy(dev->num[i], n);
677 isdn_info_update();
678 isdn_command(&cmd);
679 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
680 }
681}
682
683/* isdn_tty_hangup() disassociates a tty from the real
684 * ISDN-line (hangup). The usage-status is cleared
685 * and some cleanup is done also.
686 */
687void
475be4d8 688isdn_tty_modem_hup(modem_info *info, int local)
1da177e4
LT		 689{
690 isdn_ctrl cmd;
691 int di, ch;
692
693 if (!info)
694 return;
695
696 di = info->isdn_driver;
697 ch = info->isdn_channel;
698 if (di < 0 || ch < 0)
699 return;
700
701 info->isdn_driver = -1;
702 info->isdn_channel = -1;
703
704#ifdef ISDN_DEBUG_MODEM_HUP
705 printk(KERN_DEBUG "Mhup ttyI%d\n", info->line);
706#endif
707 info->rcvsched = 0;
ba43294d 708 isdn_tty_flush_buffer(info->port.tty);
1da177e4
LT		 709 if (info->online) {
710 info->last_lhup = local;
711 info->online = 0;
712 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
713 }
714#ifdef CONFIG_ISDN_AUDIO
715 info->vonline = 0;
716#ifdef CONFIG_ISDN_TTY_FAX
717 info->faxonline = 0;
718 info->fax->phase = ISDN_FAX_PHASE_IDLE;
719#endif
720 info->emu.vpar[4] = 0;
721 info->emu.vpar[5] = 8;
3c7208f2
JJ		 722 kfree(info->dtmf_state);
723 info->dtmf_state = NULL;
724 kfree(info->silence_state);
725 info->silence_state = NULL;
726 kfree(info->adpcms);
727 info->adpcms = NULL;
728 kfree(info->adpcmr);
729 info->adpcmr = NULL;
1da177e4
LT		 730#endif
731 if ((info->msr & UART_MSR_RI) &&
475be4d8 732 (info->emu.mdmreg[REG_RUNG] & BIT_RUNG))
1da177e4
LT		 733 isdn_tty_modem_result(RESULT_RUNG, info);
734 info->msr &= ~(UART_MSR_DCD | UART_MSR_RI);
735 info->lsr |= UART_LSR_TEMT;
736
737 if (local) {
738 cmd.driver = di;
739 cmd.command = ISDN_CMD_HANGUP;
740 cmd.arg = ch;
741 isdn_command(&cmd);
742 }
743
744 isdn_all_eaz(di, ch);
745 info->emu.mdmreg[REG_RINGCNT] = 0;
746 isdn_free_channel(di, ch, 0);
747
748 if (info->drv_index >= 0) {
749 dev->m_idx[info->drv_index] = -1;
750 info->drv_index = -1;
751 }
752}
753
754/*
475be4d8 755 * Begin of a CAPI like interface, currently used only for
1da177e4
LT		 756 * supplementary service (CAPI 2.0 part III)
757 */
758#include <linux/isdn/capicmd.h>
07a97fe8 759#include <linux/module.h>
1da177e4
LT		 760
761int
762isdn_tty_capi_facility(capi_msg *cm) {
475be4d8 763 return (-1); /* dummy */
1da177e4
LT		 764}
765
766/* isdn_tty_suspend() tries to suspend the current tty connection
767 */
768static void
475be4d8 769isdn_tty_suspend(char *id, modem_info *info, atemu *m)
1da177e4
LT		 770{
771 isdn_ctrl cmd;
475be4d8 772
1da177e4
LT		 773 int l;
774
775 if (!info)
776 return;
777
778#ifdef ISDN_DEBUG_MODEM_SERVICES
779 printk(KERN_DEBUG "Msusp ttyI%d\n", info->line);
780#endif
781 l = strlen(id);
782 if ((info->isdn_driver >= 0)) {
475be4d8 783 cmd.parm.cmsg.Length = l + 18;
1da177e4
LT		 784 cmd.parm.cmsg.Command = CAPI_FACILITY;
785 cmd.parm.cmsg.Subcommand = CAPI_REQ;
786 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
787 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
788 cmd.parm.cmsg.para[1] = 0;
789 cmd.parm.cmsg.para[2] = l + 3;
790 cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */
791 cmd.parm.cmsg.para[4] = 0;
792 cmd.parm.cmsg.para[5] = l;
793 strncpy(&cmd.parm.cmsg.para[6], id, l);
794 cmd.command = CAPI_PUT_MESSAGE;
795 cmd.driver = info->isdn_driver;
796 cmd.arg = info->isdn_channel;
797 isdn_command(&cmd);
798 }
799}
800
801/* isdn_tty_resume() tries to resume a suspended call
25985edc 802 * setup of the lower levels before that. unfortunately here is no
1da177e4
LT		 803 * checking for compatibility of used protocols implemented by Q931
804 * It does the same things like isdn_tty_dial, the last command
805 * is different, may be we can merge it.
806 */
807
808static void
475be4d8 809isdn_tty_resume(char *id, modem_info *info, atemu *m)
1da177e4
LT		 810{
811 int usg = ISDN_USAGE_MODEM;
812 int si = 7;
813 int l2 = m->mdmreg[REG_L2PROT];
814 isdn_ctrl cmd;
815 ulong flags;
816 int i;
817 int j;
818 int l;
819
820 l = strlen(id);
821 for (j = 7; j >= 0; j--)
822 if (m->mdmreg[REG_SI1] & (1 << j)) {
823 si = bit2si[j];
824 break;
825 }
826 usg = isdn_calc_usage(si, l2);
827#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 828 if ((si == 1) &&
829 (l2 != ISDN_PROTO_L2_MODEM)
1da177e4 830#ifdef CONFIG_ISDN_TTY_FAX
475be4d8 831 && (l2 != ISDN_PROTO_L2_FAX)
1da177e4
LT		 832#endif
833 ) {
834 l2 = ISDN_PROTO_L2_TRANS;
835 usg = ISDN_USAGE_VOICE;
836 }
837#endif
838 m->mdmreg[REG_SI1I] = si2bit[si];
839 spin_lock_irqsave(&dev->lock, flags);
840 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
841 if (i < 0) {
842 spin_unlock_irqrestore(&dev->lock, flags);
843 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
844 } else {
845 info->isdn_driver = dev->drvmap[i];
846 info->isdn_channel = dev->chanmap[i];
847 info->drv_index = i;
848 dev->m_idx[i] = info->line;
849 dev->usage[i] |= ISDN_USAGE_OUTGOING;
850 info->last_dir = 1;
851// strcpy(info->last_num, n);
852 isdn_info_update();
853 spin_unlock_irqrestore(&dev->lock, flags);
854 cmd.driver = info->isdn_driver;
855 cmd.arg = info->isdn_channel;
856 cmd.command = ISDN_CMD_CLREAZ;
857 isdn_command(&cmd);
858 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
859 cmd.driver = info->isdn_driver;
860 cmd.command = ISDN_CMD_SETEAZ;
861 isdn_command(&cmd);
862 cmd.driver = info->isdn_driver;
863 cmd.command = ISDN_CMD_SETL2;
864 info->last_l2 = l2;
865 cmd.arg = info->isdn_channel + (l2 << 8);
866 isdn_command(&cmd);
867 cmd.driver = info->isdn_driver;
868 cmd.command = ISDN_CMD_SETL3;
869 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
870 isdn_command(&cmd);
871 cmd.driver = info->isdn_driver;
872 cmd.arg = info->isdn_channel;
475be4d8 873 cmd.parm.cmsg.Length = l + 18;
1da177e4
LT		 874 cmd.parm.cmsg.Command = CAPI_FACILITY;
875 cmd.parm.cmsg.Subcommand = CAPI_REQ;
876 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
877 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
878 cmd.parm.cmsg.para[1] = 0;
475be4d8 879 cmd.parm.cmsg.para[2] = l + 3;
1da177e4
LT		 880 cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */
881 cmd.parm.cmsg.para[4] = 0;
882 cmd.parm.cmsg.para[5] = l;
883 strncpy(&cmd.parm.cmsg.para[6], id, l);
475be4d8 884 cmd.command = CAPI_PUT_MESSAGE;
1da177e4
LT		 885 info->dialing = 1;
886// strcpy(dev->num[i], n);
887 isdn_info_update();
888 isdn_command(&cmd);
889 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
890 }
891}
892
893/* isdn_tty_send_msg() sends a message to a HL driver
894 * This is used for hybrid modem cards to send AT commands to it
895 */
896
897static void
475be4d8 898isdn_tty_send_msg(modem_info *info, atemu *m, char *msg)
1da177e4
LT		 899{
900 int usg = ISDN_USAGE_MODEM;
901 int si = 7;
902 int l2 = m->mdmreg[REG_L2PROT];
903 isdn_ctrl cmd;
904 ulong flags;
905 int i;
906 int j;
907 int l;
908
909 l = strlen(msg);
910 if (!l) {
911 isdn_tty_modem_result(RESULT_ERROR, info);
912 return;
913 }
914 for (j = 7; j >= 0; j--)
915 if (m->mdmreg[REG_SI1] & (1 << j)) {
916 si = bit2si[j];
917 break;
918 }
919 usg = isdn_calc_usage(si, l2);
920#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 921 if ((si == 1) &&
922 (l2 != ISDN_PROTO_L2_MODEM)
1da177e4 923#ifdef CONFIG_ISDN_TTY_FAX
475be4d8 924 && (l2 != ISDN_PROTO_L2_FAX)
1da177e4
LT		 925#endif
926 ) {
927 l2 = ISDN_PROTO_L2_TRANS;
928 usg = ISDN_USAGE_VOICE;
929 }
930#endif
931 m->mdmreg[REG_SI1I] = si2bit[si];
932 spin_lock_irqsave(&dev->lock, flags);
933 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
934 if (i < 0) {
935 spin_unlock_irqrestore(&dev->lock, flags);
936 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
937 } else {
938 info->isdn_driver = dev->drvmap[i];
939 info->isdn_channel = dev->chanmap[i];
940 info->drv_index = i;
941 dev->m_idx[i] = info->line;
942 dev->usage[i] |= ISDN_USAGE_OUTGOING;
943 info->last_dir = 1;
944 isdn_info_update();
945 spin_unlock_irqrestore(&dev->lock, flags);
946 cmd.driver = info->isdn_driver;
947 cmd.arg = info->isdn_channel;
948 cmd.command = ISDN_CMD_CLREAZ;
949 isdn_command(&cmd);
950 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
951 cmd.driver = info->isdn_driver;
952 cmd.command = ISDN_CMD_SETEAZ;
953 isdn_command(&cmd);
954 cmd.driver = info->isdn_driver;
955 cmd.command = ISDN_CMD_SETL2;
956 info->last_l2 = l2;
957 cmd.arg = info->isdn_channel + (l2 << 8);
958 isdn_command(&cmd);
959 cmd.driver = info->isdn_driver;
960 cmd.command = ISDN_CMD_SETL3;
961 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
962 isdn_command(&cmd);
963 cmd.driver = info->isdn_driver;
964 cmd.arg = info->isdn_channel;
475be4d8 965 cmd.parm.cmsg.Length = l + 14;
1da177e4
LT		 966 cmd.parm.cmsg.Command = CAPI_MANUFACTURER;
967 cmd.parm.cmsg.Subcommand = CAPI_REQ;
968 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
475be4d8 969 cmd.parm.cmsg.para[0] = l + 1;
1da177e4 970 strncpy(&cmd.parm.cmsg.para[1], msg, l);
475be4d8
JP		 971 cmd.parm.cmsg.para[l + 1] = 0xd;
972 cmd.command = CAPI_PUT_MESSAGE;
1da177e4
LT		 973/* info->dialing = 1;
974 strcpy(dev->num[i], n);
975 isdn_info_update();
976*/
977 isdn_command(&cmd);
978 }
979}
980
981static inline int
982isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine)
983{
984#ifdef MODEM_PARANOIA_CHECK
985 if (!info) {
986 printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n",
475be4d8 987 name, routine);
1da177e4
LT		 988 return 1;
989 }
990 if (info->magic != ISDN_ASYNC_MAGIC) {
991 printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n",
992 name, routine);
993 return 1;
994 }
995#endif
996 return 0;
997}
998
999/*
1000 * This routine is called to set the UART divisor registers to match
1001 * the specified baud rate for a serial port.
1002 */
1003static void
475be4d8 1004isdn_tty_change_speed(modem_info *info)
1da177e4 1005{
265d6f00 1006 struct tty_port *port = &info->port;
1da177e4 1007 uint cflag,
475be4d8
JP		 1008 cval,
1009 quot;
1da177e4
LT		 1010 int i;
1011
adc8d746 1012 if (!port->tty)
1da177e4 1013 return;
adc8d746 1014 cflag = port->tty->termios.c_cflag;
1da177e4
LT		 1015
1016 quot = i = cflag & CBAUD;
1017 if (i & CBAUDEX) {
1018 i &= ~CBAUDEX;
1019 if (i < 1 || i > 2)
adc8d746 1020 port->tty->termios.c_cflag &= ~CBAUDEX;
1da177e4
LT		 1021 else
1022 i += 15;
1023 }
1024 if (quot) {
1025 info->mcr |= UART_MCR_DTR;
1026 isdn_tty_modem_ncarrier(info);
1027 } else {
1028 info->mcr &= ~UART_MCR_DTR;
1029 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1030#ifdef ISDN_DEBUG_MODEM_HUP
1031 printk(KERN_DEBUG "Mhup in changespeed\n");
1032#endif
1033 if (info->online)
1034 info->ncarrier = 1;
1035 isdn_tty_modem_reset_regs(info, 0);
1036 isdn_tty_modem_hup(info, 1);
1037 }
1038 return;
1039 }
1040 /* byte size and parity */
1041 cval = cflag & (CSIZE | CSTOPB);
1042 cval >>= 4;
1043 if (cflag & PARENB)
1044 cval |= UART_LCR_PARITY;
1045 if (!(cflag & PARODD))
1046 cval |= UART_LCR_EPAR;
1da177e4
LT		 1047
1048 /* CTS flow control flag and modem status interrupts */
1049 if (cflag & CRTSCTS) {
265d6f00 1050 port->flags |= ASYNC_CTS_FLOW;
1da177e4 1051 } else
265d6f00 1052 port->flags &= ~ASYNC_CTS_FLOW;
1da177e4 1053 if (cflag & CLOCAL)
265d6f00 1054 port->flags &= ~ASYNC_CHECK_CD;
1da177e4 1055 else {
265d6f00 1056 port->flags |= ASYNC_CHECK_CD;
1da177e4
LT		 1057 }
1058}
1059
1060static int
475be4d8 1061isdn_tty_startup(modem_info *info)
1da177e4 1062{
48decc1c 1063 if (info->port.flags & ASYNC_INITIALIZED)
1da177e4
LT		 1064 return 0;
1065 isdn_lock_drivers();
1066#ifdef ISDN_DEBUG_MODEM_OPEN
1067 printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line);
1068#endif
1069 /*
1070 * Now, initialize the UART
1071 */
1072 info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
ba43294d
JS		 1073 if (info->port.tty)
1074 clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
1da177e4
LT		 1075 /*
1076 * and set the speed of the serial port
1077 */
1078 isdn_tty_change_speed(info);
1079
48decc1c 1080 info->port.flags |= ASYNC_INITIALIZED;
1da177e4
LT		 1081 info->msr |= (UART_MSR_DSR | UART_MSR_CTS);
1082 info->send_outstanding = 0;
1083 return 0;
1084}
1085
1086/*
1087 * This routine will shutdown a serial port; interrupts are disabled, and
1088 * DTR is dropped if the hangup on close termio flag is on.
1089 */
1090static void
475be4d8 1091isdn_tty_shutdown(modem_info *info)
1da177e4 1092{
48decc1c 1093 if (!(info->port.flags & ASYNC_INITIALIZED))
1da177e4
LT		 1094 return;
1095#ifdef ISDN_DEBUG_MODEM_OPEN
1096 printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line);
1097#endif
1098 isdn_unlock_drivers();
1099 info->msr &= ~UART_MSR_RI;
adc8d746 1100 if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {
1da177e4
LT		 1101 info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
1102 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1103 isdn_tty_modem_reset_regs(info, 0);
1104#ifdef ISDN_DEBUG_MODEM_HUP
1105 printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n");
1106#endif
1107 isdn_tty_modem_hup(info, 1);
1108 }
1109 }
ba43294d
JS		 1110 if (info->port.tty)
1111 set_bit(TTY_IO_ERROR, &info->port.tty->flags);
1da177e4 1112
48decc1c 1113 info->port.flags &= ~ASYNC_INITIALIZED;
1da177e4
LT		 1114}
1115
1116/* isdn_tty_write() is the main send-routine. It is called from the upper
1117 * levels within the kernel to perform sending data. Depending on the
1118 * online-flag it either directs output to the at-command-interpreter or
1119 * to the lower level. Additional tasks done here:
1120 * - If online, check for escape-sequence (+++)
1121 * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes.
1122 * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed.
1123 * - If dialing, abort dial.
1124 */
1125static int
475be4d8 1126isdn_tty_write(struct tty_struct *tty, const u_char *buf, int count)
1da177e4
LT		 1127{
1128 int c;
1129 int total = 0;
1130 modem_info *info = (modem_info *) tty->driver_data;
1131 atemu *m = &info->emu;
1132
1133 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write"))
1134 return 0;
1135 /* See isdn_tty_senddown() */
1136 atomic_inc(&info->xmit_lock);
1137 while (1) {
1138 c = count;
1139 if (c > info->xmit_size - info->xmit_count)
1140 c = info->xmit_size - info->xmit_count;
1141 if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize)
1142 c = dev->drv[info->isdn_driver]->maxbufsize;
1143 if (c <= 0)
1144 break;
1145 if ((info->online > 1)
1146#ifdef CONFIG_ISDN_AUDIO
1147 || (info->vonline & 3)
1148#endif
1149 ) {
1150#ifdef CONFIG_ISDN_AUDIO
1151 if (!info->vonline)
1152#endif
1153 isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c,
1154 &(m->pluscount),
1155 &(m->lastplus));
82e46b31 1156 memcpy(&info->port.xmit_buf[info->xmit_count], buf, c);
1da177e4
LT		 1157#ifdef CONFIG_ISDN_AUDIO
1158 if (info->vonline) {
1159 int cc = isdn_tty_handleDLEdown(info, m, c);
1160 if (info->vonline & 2) {
1161 if (!cc) {
1162 /* If DLE decoding results in zero-transmit, but
1163 * c originally was non-zero, do a wakeup.
1164 */
1165 tty_wakeup(tty);
1166 info->msr |= UART_MSR_CTS;
1167 info->lsr |= UART_LSR_TEMT;
1168 }
1169 info->xmit_count += cc;
1170 }
1171 if ((info->vonline & 3) == 1) {
1172 /* Do NOT handle Ctrl-Q or Ctrl-S
1173 * when in full-duplex audio mode.
1174 */
1175 if (isdn_tty_end_vrx(buf, c)) {
1176 info->vonline &= ~1;
1177#ifdef ISDN_DEBUG_MODEM_VOICE
1178 printk(KERN_DEBUG
1179 "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n",
1180 info->line);
1181#endif
1182 isdn_tty_at_cout("\020\003\r\nVCON\r\n", info);
1183 }
1184 }
1185 } else
475be4d8
JP		 1186 if (TTY_IS_FCLASS1(info)) {
1187 int cc = isdn_tty_handleDLEdown(info, m, c);
1188
1189 if (info->vonline & 4) { /* ETX seen */
1190 isdn_ctrl c;
1191
1192 c.command = ISDN_CMD_FAXCMD;
1193 c.driver = info->isdn_driver;
1194 c.arg = info->isdn_channel;
1195 c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL;
1196 c.parm.aux.subcmd = ETX;
1197 isdn_command(&c);
1198 }
1199 info->vonline = 0;
1da177e4 1200#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8 1201 printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c);
1da177e4 1202#endif
475be4d8
JP		 1203 info->xmit_count += cc;
1204 } else
1da177e4 1205#endif
475be4d8 1206 info->xmit_count += c;
1da177e4
LT		 1207 } else {
1208 info->msr |= UART_MSR_CTS;
1209 info->lsr |= UART_LSR_TEMT;
1210 if (info->dialing) {
1211 info->dialing = 0;
1212#ifdef ISDN_DEBUG_MODEM_HUP
1213 printk(KERN_DEBUG "Mhup in isdn_tty_write\n");
1214#endif
1215 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
1216 isdn_tty_modem_hup(info, 1);
1217 } else
1218 c = isdn_tty_edit_at(buf, c, info);
1219 }
1220 buf += c;
1221 count -= c;
1222 total += c;
1223 }
1224 atomic_dec(&info->xmit_lock);
b03efcfb 1225 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
1da177e4
LT		 1226 if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
1227 isdn_tty_senddown(info);
1228 isdn_tty_tint(info);
1229 }
1230 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1231 }
1232 return total;
1233}
1234
1235static int
1236isdn_tty_write_room(struct tty_struct *tty)
1237{
1238 modem_info *info = (modem_info *) tty->driver_data;
1239 int ret;
1240
1241 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room"))
1242 return 0;
1243 if (!info->online)
1244 return info->xmit_size;
1245 ret = info->xmit_size - info->xmit_count;
1246 return (ret < 0) ? 0 : ret;
1247}
1248
1249static int
1250isdn_tty_chars_in_buffer(struct tty_struct *tty)
1251{
1252 modem_info *info = (modem_info *) tty->driver_data;
1253
1254 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer"))
1255 return 0;
1256 if (!info->online)
1257 return 0;
1258 return (info->xmit_count);
1259}
1260
1261static void
1262isdn_tty_flush_buffer(struct tty_struct *tty)
1263{
1264 modem_info *info;
1265
1266 if (!tty) {
1267 return;
1268 }
1269 info = (modem_info *) tty->driver_data;
1270 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) {
1271 return;
1272 }
1273 isdn_tty_cleanup_xmit(info);
1274 info->xmit_count = 0;
1da177e4
LT		 1275 tty_wakeup(tty);
1276}
1277
1278static void
1279isdn_tty_flush_chars(struct tty_struct *tty)
1280{
1281 modem_info *info = (modem_info *) tty->driver_data;
1282
1283 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
1284 return;
b03efcfb 1285 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
1da177e4
LT		 1286 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1287}
1288
1289/*
1290 * ------------------------------------------------------------
1291 * isdn_tty_throttle()
1292 *
1293 * This routine is called by the upper-layer tty layer to signal that
1294 * incoming characters should be throttled.
1295 * ------------------------------------------------------------
1296 */
1297static void
1298isdn_tty_throttle(struct tty_struct *tty)
1299{
1300 modem_info *info = (modem_info *) tty->driver_data;
1301
1302 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle"))
1303 return;
1304 if (I_IXOFF(tty))
1305 info->x_char = STOP_CHAR(tty);
1306 info->mcr &= ~UART_MCR_RTS;
1307}
1308
1309static void
1310isdn_tty_unthrottle(struct tty_struct *tty)
1311{
1312 modem_info *info = (modem_info *) tty->driver_data;
1313
1314 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle"))
1315 return;
1316 if (I_IXOFF(tty)) {
1317 if (info->x_char)
1318 info->x_char = 0;
1319 else
1320 info->x_char = START_CHAR(tty);
1321 }
1322 info->mcr |= UART_MCR_RTS;
1323}
1324
1325/*
1326 * ------------------------------------------------------------
1327 * isdn_tty_ioctl() and friends
1328 * ------------------------------------------------------------
1329 */
1330
1331/*
1332 * isdn_tty_get_lsr_info - get line status register info
1333 *
1334 * Purpose: Let user call ioctl() to get info when the UART physically
1335 * is emptied. On bus types like RS485, the transmitter must
1336 * release the bus after transmitting. This must be done when
1337 * the transmit shift register is empty, not be done when the
1338 * transmit holding register is empty. This functionality
1339 * allows RS485 driver to be written in user space.
1340 */
1341static int
475be4d8 1342isdn_tty_get_lsr_info(modem_info *info, uint __user *value)
1da177e4
LT		 1343{
1344 u_char status;
1345 uint result;
1346
1347 status = info->lsr;
1348 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1349 return put_user(result, value);
1350}
1351
1352
1353static int
60b33c13 1354isdn_tty_tiocmget(struct tty_struct *tty)
1da177e4
LT		 1355{
1356 modem_info *info = (modem_info *) tty->driver_data;
1357 u_char control, status;
1358
156f1ed6 1359 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1da177e4
LT		 1360 return -ENODEV;
1361 if (tty->flags & (1 << TTY_IO_ERROR))
1362 return -EIO;
1363
72250d44 1364 mutex_lock(&modem_info_mutex);
1da177e4
LT		 1365#ifdef ISDN_DEBUG_MODEM_IOCTL
1366 printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
1367#endif
1368
1369 control = info->mcr;
1370 status = info->msr;
72250d44 1371 mutex_unlock(&modem_info_mutex);
1da177e4 1372 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
475be4d8
JP		 1373 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
1374 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
1375 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
1376 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
1377 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1da177e4
LT		 1378}
1379
1380static int
20b9d177 1381isdn_tty_tiocmset(struct tty_struct *tty,
475be4d8 1382 unsigned int set, unsigned int clear)
1da177e4
LT		 1383{
1384 modem_info *info = (modem_info *) tty->driver_data;
1385
156f1ed6 1386 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1da177e4
LT		 1387 return -ENODEV;
1388 if (tty->flags & (1 << TTY_IO_ERROR))
1389 return -EIO;
1390
1391#ifdef ISDN_DEBUG_MODEM_IOCTL
1392 printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
1393#endif
1394
72250d44 1395 mutex_lock(&modem_info_mutex);
1da177e4
LT		 1396 if (set & TIOCM_RTS)
1397 info->mcr |= UART_MCR_RTS;
1398 if (set & TIOCM_DTR) {
1399 info->mcr |= UART_MCR_DTR;
1400 isdn_tty_modem_ncarrier(info);
1401 }
1402
1403 if (clear & TIOCM_RTS)
1404 info->mcr &= ~UART_MCR_RTS;
1405 if (clear & TIOCM_DTR) {
1406 info->mcr &= ~UART_MCR_DTR;
1407 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1408 isdn_tty_modem_reset_regs(info, 0);
1409#ifdef ISDN_DEBUG_MODEM_HUP
1410 printk(KERN_DEBUG "Mhup in TIOCMSET\n");
1411#endif
1412 if (info->online)
1413 info->ncarrier = 1;
1414 isdn_tty_modem_hup(info, 1);
1415 }
1416 }
72250d44 1417 mutex_unlock(&modem_info_mutex);
1da177e4
LT		 1418 return 0;
1419}
1420
1421static int
6caa76b7 1422isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg)
1da177e4
LT		 1423{
1424 modem_info *info = (modem_info *) tty->driver_data;
1425 int retval;
1426
1427 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
1428 return -ENODEV;
1429 if (tty->flags & (1 << TTY_IO_ERROR))
1430 return -EIO;
1431 switch (cmd) {
475be4d8 1432 case TCSBRK: /* SVID version: non-zero arg --> no break */
1da177e4 1433#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8
JP		 1434 printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
1435#endif
1436 retval = tty_check_change(tty);
1437 if (retval)
1438 return retval;
1439 tty_wait_until_sent(tty, 0);
1440 return 0;
1441 case TCSBRKP: /* support for POSIX tcsendbreak() */
1da177e4 1442#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8
JP		 1443 printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
1444#endif
1445 retval = tty_check_change(tty);
1446 if (retval)
1447 return retval;
1448 tty_wait_until_sent(tty, 0);
1449 return 0;
1450 case TIOCSERGETLSR: /* Get line status register */
1da177e4 1451#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8 1452 printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
1da177e4 1453#endif
475be4d8
JP		 1454 return isdn_tty_get_lsr_info(info, (uint __user *) arg);
1455 default:
1da177e4 1456#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8 1457 printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line);
1da177e4 1458#endif
475be4d8 1459 return -ENOIOCTLCMD;
1da177e4
LT		 1460 }
1461 return 0;
1462}
1463
1464static void
606d099c 1465isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4
LT		 1466{
1467 modem_info *info = (modem_info *) tty->driver_data;
1468
1469 if (!old_termios)
1470 isdn_tty_change_speed(info);
1471 else {
adc8d746
AC		 1472 if (tty->termios.c_cflag == old_termios->c_cflag &&
1473 tty->termios.c_ispeed == old_termios->c_ispeed &&
1474 tty->termios.c_ospeed == old_termios->c_ospeed)
1da177e4
LT		 1475 return;
1476 isdn_tty_change_speed(info);
1477 if ((old_termios->c_cflag & CRTSCTS) &&
adc8d746 1478 !(tty->termios.c_cflag & CRTSCTS))
1da177e4 1479 tty->hw_stopped = 0;
1da177e4
LT		 1480 }
1481}
1482
1483/*
1484 * ------------------------------------------------------------
1485 * isdn_tty_open() and friends
1486 * ------------------------------------------------------------
1487 */
042b9e7c 1488
f7e0405e
JS		 1489static int isdn_tty_install(struct tty_driver *driver, struct tty_struct *tty)
1490{
1491 modem_info *info = &dev->mdm.info[tty->index];
1492
1493 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1494 return -ENODEV;
1495
1496 tty->driver_data = info;
1497
1498 return tty_port_install(&info->port, driver, tty);
1499}
1500
1da177e4
LT		 1501/*
1502 * This routine is called whenever a serial port is opened. It
1503 * enables interrupts for a serial port, linking in its async structure into
1504 * the IRQ chain. It also performs the serial-specific
1505 * initialization for the tty structure.
1506 */
1507static int
1508isdn_tty_open(struct tty_struct *tty, struct file *filp)
1509{
f7e0405e
JS		 1510 modem_info *info = tty->driver_data;
1511 struct tty_port *port = &info->port;
410235fd 1512 int retval;
1da177e4 1513
1da177e4 1514#ifdef ISDN_DEBUG_MODEM_OPEN
475be4d8 1515 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
265d6f00 1516 port->count);
1da177e4 1517#endif
265d6f00 1518 port->count++;
265d6f00 1519 port->tty = tty;
1da177e4
LT		 1520 /*
1521 * Start up serial port
1522 */
1523 retval = isdn_tty_startup(info);
1524 if (retval) {
1525#ifdef ISDN_DEBUG_MODEM_OPEN
1526 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1527#endif
1da177e4
LT		 1528 return retval;
1529 }
875d54aa 1530 retval = tty_port_block_til_ready(port, tty, filp);
1da177e4
LT		 1531 if (retval) {
1532#ifdef ISDN_DEBUG_MODEM_OPEN
1533 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1534#endif
1da177e4
LT		 1535 return retval;
1536 }
1537#ifdef ISDN_DEBUG_MODEM_OPEN
1538 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1539#endif
1540 dev->modempoll++;
1541#ifdef ISDN_DEBUG_MODEM_OPEN
1542 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1543#endif
1544 return 0;
1545}
1546
1547static void
1548isdn_tty_close(struct tty_struct *tty, struct file *filp)
1549{
1550 modem_info *info = (modem_info *) tty->driver_data;
265d6f00 1551 struct tty_port *port = &info->port;
1da177e4
LT		 1552 ulong timeout;
1553
1554 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1555 return;
1556 if (tty_hung_up_p(filp)) {
1557#ifdef ISDN_DEBUG_MODEM_OPEN
1558 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1559#endif
1560 return;
1561 }
265d6f00 1562 if ((tty->count == 1) && (port->count != 1)) {
1da177e4
LT		 1563 /*
1564 * Uh, oh. tty->count is 1, which means that the tty
1565 * structure will be freed. Info->count should always
1566 * be one in these conditions. If it's greater than
1567 * one, we've got real problems, since it means the
1568 * serial port won't be shutdown.
1569 */
1570 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
265d6f00
JS		 1571 "info->count is %d\n", port->count);
1572 port->count = 1;
1da177e4 1573 }
265d6f00 1574 if (--port->count < 0) {
1da177e4 1575 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
265d6f00
JS		 1576 info->line, port->count);
1577 port->count = 0;
1da177e4 1578 }
265d6f00 1579 if (port->count) {
1da177e4
LT		 1580#ifdef ISDN_DEBUG_MODEM_OPEN
1581 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1582#endif
1583 return;
1584 }
265d6f00 1585 port->flags |= ASYNC_CLOSING;
1da177e4
LT		 1586
1587 tty->closing = 1;
1588 /*
1589 * At this point we stop accepting input. To do this, we
1590 * disable the receive line status interrupts, and tell the
1591 * interrupt driver to stop checking the data ready bit in the
1592 * line status register.
1593 */
265d6f00 1594 if (port->flags & ASYNC_INITIALIZED) {
0b058353 1595 tty_wait_until_sent_from_close(tty, 3000); /* 30 seconds timeout */
1da177e4
LT		 1596 /*
1597 * Before we drop DTR, make sure the UART transmitter
1598 * has completely drained; this is especially
1599 * important if there is a transmit FIFO!
1600 */
1601 timeout = jiffies + HZ;
1602 while (!(info->lsr & UART_LSR_TEMT)) {
24763c48 1603 schedule_timeout_interruptible(20);
475be4d8 1604 if (time_after(jiffies, timeout))
1da177e4
LT		 1605 break;
1606 }
1607 }
1608 dev->modempoll--;
1609 isdn_tty_shutdown(info);
978e595f 1610 isdn_tty_flush_buffer(tty);
1da177e4 1611 tty_ldisc_flush(tty);
265d6f00 1612 port->tty = NULL;
1da177e4 1613 info->ncarrier = 0;
4330d663
JS		 1614
1615 tty_port_close_end(port, tty);
1da177e4
LT		 1616#ifdef ISDN_DEBUG_MODEM_OPEN
1617 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1618#endif
1619}
1620
1621/*
1622 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1623 */
1624static void
1625isdn_tty_hangup(struct tty_struct *tty)
1626{
1627 modem_info *info = (modem_info *) tty->driver_data;
265d6f00 1628 struct tty_port *port = &info->port;
1da177e4
LT		 1629
1630 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1631 return;
1632 isdn_tty_shutdown(info);
265d6f00
JS		 1633 port->count = 0;
1634 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1635 port->tty = NULL;
1636 wake_up_interruptible(&port->open_wait);
1da177e4
LT		 1637}
1638
1639/* This routine initializes all emulator-data.
1640 */
1641static void
475be4d8 1642isdn_tty_reset_profile(atemu *m)
1da177e4
LT		 1643{
1644 m->profile[0] = 0;
1645 m->profile[1] = 0;
1646 m->profile[2] = 43;
1647 m->profile[3] = 13;
1648 m->profile[4] = 10;
1649 m->profile[5] = 8;
1650 m->profile[6] = 3;
1651 m->profile[7] = 60;
1652 m->profile[8] = 2;
1653 m->profile[9] = 6;
1654 m->profile[10] = 7;
1655 m->profile[11] = 70;
1656 m->profile[12] = 0x45;
1657 m->profile[13] = 4;
1658 m->profile[14] = ISDN_PROTO_L2_X75I;
1659 m->profile[15] = ISDN_PROTO_L3_TRANS;
1660 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1661 m->profile[17] = ISDN_MODEM_WINSIZE;
1662 m->profile[18] = 4;
1663 m->profile[19] = 0;
1664 m->profile[20] = 0;
1665 m->profile[23] = 0;
1666 m->pmsn[0] = '\0';
1667 m->plmsn[0] = '\0';
1668}
1669
1670#ifdef CONFIG_ISDN_AUDIO
1671static void
475be4d8 1672isdn_tty_modem_reset_vpar(atemu *m)
1da177e4
LT		 1673{
1674 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1675 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1676 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1677 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1678 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1679 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1680}
1681#endif
1682
1683#ifdef CONFIG_ISDN_TTY_FAX
1684static void
475be4d8 1685isdn_tty_modem_reset_faxpar(modem_info *info)
1da177e4
LT		 1686{
1687 T30_s *f = info->fax;
1688
1689 f->code = 0;
1690 f->phase = ISDN_FAX_PHASE_IDLE;
1691 f->direction = 0;
1692 f->resolution = 1; /* fine */
1693 f->rate = 5; /* 14400 bit/s */
1694 f->width = 0;
1695 f->length = 0;
1696 f->compression = 0;
1697 f->ecm = 0;
1698 f->binary = 0;
1699 f->scantime = 0;
1700 memset(&f->id[0], 32, FAXIDLEN - 1);
1701 f->id[FAXIDLEN - 1] = 0;
1702 f->badlin = 0;
1703 f->badmul = 0;
1704 f->bor = 0;
1705 f->nbc = 0;
1706 f->cq = 0;
1707 f->cr = 0;
1708 f->ctcrty = 0;
1709 f->minsp = 0;
1710 f->phcto = 30;
1711 f->rel = 0;
1712 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1713 f->pollid[FAXIDLEN - 1] = 0;
1714}
1715#endif
1716
1717static void
475be4d8 1718isdn_tty_modem_reset_regs(modem_info *info, int force)
1da177e4
LT		 1719{
1720 atemu *m = &info->emu;
1721 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1722 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1723 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1724 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1725 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1726 }
1727#ifdef CONFIG_ISDN_AUDIO
1728 isdn_tty_modem_reset_vpar(m);
1729#endif
1730#ifdef CONFIG_ISDN_TTY_FAX
1731 isdn_tty_modem_reset_faxpar(info);
1732#endif
1733 m->mdmcmdl = 0;
1734}
1735
1736static void
475be4d8 1737modem_write_profile(atemu *m)
1da177e4
LT		 1738{
1739 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1740 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1741 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1742 if (dev->profd)
1743 send_sig(SIGIO, dev->profd, 1);
1744}
1745
b68e31d0 1746static const struct tty_operations modem_ops = {
f7e0405e 1747 .install = isdn_tty_install,
475be4d8 1748 .open = isdn_tty_open,
1da177e4
LT		 1749 .close = isdn_tty_close,
1750 .write = isdn_tty_write,
1751 .flush_chars = isdn_tty_flush_chars,
1752 .write_room = isdn_tty_write_room,
1753 .chars_in_buffer = isdn_tty_chars_in_buffer,
1754 .flush_buffer = isdn_tty_flush_buffer,
1755 .ioctl = isdn_tty_ioctl,
1756 .throttle = isdn_tty_throttle,
1757 .unthrottle = isdn_tty_unthrottle,
1758 .set_termios = isdn_tty_set_termios,
1759 .hangup = isdn_tty_hangup,
1760 .tiocmget = isdn_tty_tiocmget,
1761 .tiocmset = isdn_tty_tiocmset,
1762};
1763
042b9e7c
JS		 1764static int isdn_tty_carrier_raised(struct tty_port *port)
1765{
1766 modem_info *info = container_of(port, modem_info, port);
1767 return info->msr & UART_MSR_DCD;
1768}
1769
1770static const struct tty_port_operations isdn_tty_port_ops = {
1771 .carrier_raised = isdn_tty_carrier_raised,
1772};
1773
1da177e4
LT		 1774int
1775isdn_tty_modem_init(void)
1776{
1777 isdn_modem_t *m;
1778 int i, retval;
1779 modem_info *info;
1780
1781 m = &dev->mdm;
1782 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1783 if (!m->tty_modem)
1784 return -ENOMEM;
1785 m->tty_modem->name = "ttyI";
1da177e4
LT		 1786 m->tty_modem->major = ISDN_TTY_MAJOR;
1787 m->tty_modem->minor_start = 0;
1788 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1789 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1790 m->tty_modem->init_termios = tty_std_termios;
1791 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
c4d6ebeb 1792 m->tty_modem->flags = TTY_DRIVER_REAL_RAW;
1da177e4
LT		 1793 m->tty_modem->driver_name = "isdn_tty";
1794 tty_set_operations(m->tty_modem, &modem_ops);
1795 retval = tty_register_driver(m->tty_modem);
1796 if (retval) {
1797 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1798 goto err;
1799 }
1800 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1801 info = &m->info[i];
1802#ifdef CONFIG_ISDN_TTY_FAX
1803 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1804 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1805 retval = -ENOMEM;
1806 goto err_unregister;
1807 }
1da177e4 1808#endif
48decc1c 1809 tty_port_init(&info->port);
042b9e7c 1810 info->port.ops = &isdn_tty_port_ops;
1da177e4 1811 spin_lock_init(&info->readlock);
1da177e4
LT		 1812 sprintf(info->last_cause, "0000");
1813 sprintf(info->last_num, "none");
1814 info->last_dir = 0;
1815 info->last_lhup = 1;
1816 info->last_l2 = -1;
1817 info->last_si = 0;
1818 isdn_tty_reset_profile(&info->emu);
1819 isdn_tty_modem_reset_regs(info, 1);
1820 info->magic = ISDN_ASYNC_MAGIC;
1821 info->line = i;
1da177e4 1822 info->x_char = 0;
1da177e4
LT		 1823 info->isdn_driver = -1;
1824 info->isdn_channel = -1;
1825 info->drv_index = -1;
1826 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1827 init_timer(&info->nc_timer);
1828 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1829 info->nc_timer.data = (unsigned long) info;
1830 skb_queue_head_init(&info->xmit_queue);
1831#ifdef CONFIG_ISDN_AUDIO
1832 skb_queue_head_init(&info->dtmf_queue);
1833#endif
82e46b31
JS		 1834 info->port.xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5,
1835 GFP_KERNEL);
1836 if (!info->port.xmit_buf) {
1da177e4
LT		 1837 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1838 retval = -ENOMEM;
1839 goto err_unregister;
1840 }
1841 /* Make room for T.70 header */
82e46b31 1842 info->port.xmit_buf += 4;
1da177e4
LT		 1843 }
1844 return 0;
1845err_unregister:
1846 for (i--; i >= 0; i--) {
1847 info = &m->info[i];
1848#ifdef CONFIG_ISDN_TTY_FAX
1849 kfree(info->fax);
1850#endif
82e46b31 1851 kfree(info->port.xmit_buf - 4);
1da177e4
LT		 1852 }
1853 tty_unregister_driver(m->tty_modem);
475be4d8 1854err:
1da177e4
LT		 1855 put_tty_driver(m->tty_modem);
1856 m->tty_modem = NULL;
1857 return retval;
1858}
1859
1860void
1861isdn_tty_exit(void)
1862{
1863 modem_info *info;
1864 int i;
1865
1866 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1867 info = &dev->mdm.info[i];
1868 isdn_tty_cleanup_xmit(info);
1869#ifdef CONFIG_ISDN_TTY_FAX
1870 kfree(info->fax);
1871#endif
82e46b31 1872 kfree(info->port.xmit_buf - 4);
1da177e4
LT		 1873 }
1874 tty_unregister_driver(dev->mdm.tty_modem);
1875 put_tty_driver(dev->mdm.tty_modem);
1876 dev->mdm.tty_modem = NULL;
1877}
1878
1879
1880/*
1881 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1882 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1883 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1884 */
1885
1886static int
1887isdn_tty_match_icall(char *cid, atemu *emu, int di)
1888{
1889#ifdef ISDN_DEBUG_MODEM_ICALL
1890 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1891 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1892 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1893#endif
1894 if (strlen(emu->lmsn)) {
1895 char *p = emu->lmsn;
1896 char *q;
1897 int tmp;
1898 int ret = 0;
1899
1900 while (1) {
1901 if ((q = strchr(p, ';')))
1902 *q = '\0';
1903 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
1904 ret = tmp;
1905#ifdef ISDN_DEBUG_MODEM_ICALL
1906 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
1907 p, isdn_map_eaz2msn(emu->msn, di), tmp);
1908#endif
1909 if (q) {
1910 *q = ';';
1911 p = q;
1912 p++;
1913 }
1914 if (!tmp)
1915 return 0;
1916 if (!q)
1917 break;
1918 }
1919 return ret;
1920 } else {
1921 int tmp;
1922 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
1923#ifdef ISDN_DEBUG_MODEM_ICALL
475be4d8
JP		 1924 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
1925 isdn_map_eaz2msn(emu->msn, di), tmp);
1da177e4
LT		 1926#endif
1927 return tmp;
1928 }
1929}
1930
1931/*
1932 * An incoming call-request has arrived.
1933 * Search the tty-devices for an appropriate device and bind
1934 * it to the ISDN-Channel.
1935 * Return:
1936 *
1937 * 0 = No matching device found.
1938 * 1 = A matching device found.
1939 * 3 = No match found, but eventually would match, if
1940 * CID is longer.
1941 */
1942int
1943isdn_tty_find_icall(int di, int ch, setup_parm *setup)
1944{
1945 char *eaz;
1946 int i;
1947 int wret;
1948 int idx;
1949 int si1;
1950 int si2;
1951 char *nr;
1952 ulong flags;
1953
1954 if (!setup->phone[0]) {
1955 nr = "0";
1956 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
1957 } else
1958 nr = setup->phone;
1959 si1 = (int) setup->si1;
1960 si2 = (int) setup->si2;
1961 if (!setup->eazmsn[0]) {
1962 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
1963 eaz = "0";
1964 } else
1965 eaz = setup->eazmsn;
1966#ifdef ISDN_DEBUG_MODEM_ICALL
1967 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
1968#endif
1969 wret = 0;
1970 spin_lock_irqsave(&dev->lock, flags);
1971 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1972 modem_info *info = &dev->mdm.info[i];
1973
1b05f030 1974 if (info->port.count == 0)
475be4d8 1975 continue;
1da177e4
LT		 1976 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
1977 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
1978 idx = isdn_dc2minor(di, ch);
1979#ifdef ISDN_DEBUG_MODEM_ICALL
1980 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
1981 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
48decc1c
JS		 1982 info->port.flags, info->isdn_driver,
1983 info->isdn_channel, dev->usage[idx]);
1da177e4
LT		 1984#endif
1985 if (
1986#ifndef FIX_FILE_TRANSFER
48decc1c 1987 (info->port.flags & ASYNC_NORMAL_ACTIVE) &&
1da177e4
LT		 1988#endif
1989 (info->isdn_driver == -1) &&
1990 (info->isdn_channel == -1) &&
1991 (USG_NONE(dev->usage[idx]))) {
1992 int matchret;
1993
1994 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
1995 wret = matchret;
1996 if (!matchret) { /* EAZ is matching */
1997 info->isdn_driver = di;
1998 info->isdn_channel = ch;
1999 info->drv_index = idx;
2000 dev->m_idx[idx] = info->line;
2001 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
475be4d8 2002 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
1da177e4
LT		 2003 strcpy(dev->num[idx], nr);
2004 strcpy(info->emu.cpn, eaz);
2005 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
2006 info->emu.mdmreg[REG_PLAN] = setup->plan;
2007 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2008 isdn_info_update();
2009 spin_unlock_irqrestore(&dev->lock, flags);
2010 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2011 info->line);
2012 info->msr |= UART_MSR_RI;
2013 isdn_tty_modem_result(RESULT_RING, info);
2014 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2015 return 1;
2016 }
2017 }
2018 }
2019 }
2020 spin_unlock_irqrestore(&dev->lock, flags);
2021 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
475be4d8
JP		 2022 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2)) ? "rejected" : "ignored");
2023 return (wret == 2) ? 3 : 0;
1da177e4
LT		 2024}
2025
48decc1c 2026#define TTY_IS_ACTIVE(info) (info->port.flags & ASYNC_NORMAL_ACTIVE)
1da177e4
LT		 2027
2028int
2029isdn_tty_stat_callback(int i, isdn_ctrl *c)
2030{
2031 int mi;
2032 modem_info *info;
2033 char *e;
2034
2035 if (i < 0)
2036 return 0;
2037 if ((mi = dev->m_idx[i]) >= 0) {
2038 info = &dev->mdm.info[mi];
2039 switch (c->command) {
475be4d8
JP		 2040 case ISDN_STAT_CINF:
2041 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2042 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2043 if (e == (char *)c->parm.num)
2044 info->emu.charge = 0;
2045
2046 break;
2047 case ISDN_STAT_BSENT:
1da177e4 2048#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2049 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
1da177e4 2050#endif
475be4d8
JP		 2051 if ((info->isdn_driver == c->driver) &&
2052 (info->isdn_channel == c->arg)) {
2053 info->msr |= UART_MSR_CTS;
2054 if (info->send_outstanding)
2055 if (!(--info->send_outstanding))
2056 info->lsr |= UART_LSR_TEMT;
2057 isdn_tty_tint(info);
1da177e4 2058 return 1;
475be4d8
JP		 2059 }
2060 break;
2061 case ISDN_STAT_CAUSE:
1da177e4 2062#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2063 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2064#endif
2065 /* Signal cause to tty-device */
2066 strncpy(info->last_cause, c->parm.num, 5);
2067 return 1;
2068 case ISDN_STAT_DISPLAY:
1da177e4 2069#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2070 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
1da177e4 2071#endif
475be4d8
JP		 2072 /* Signal display to tty-device */
2073 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2074 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2075 isdn_tty_at_cout("\r\n", info);
2076 isdn_tty_at_cout("DISPLAY: ", info);
2077 isdn_tty_at_cout(c->parm.display, info);
2078 isdn_tty_at_cout("\r\n", info);
2079 }
2080 return 1;
2081 case ISDN_STAT_DCONN:
2082#ifdef ISDN_TTY_STAT_DEBUG
2083 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2084#endif
2085 if (TTY_IS_ACTIVE(info)) {
2086 if (info->dialing == 1) {
2087 info->dialing = 2;
2088 return 1;
1da177e4 2089 }
475be4d8
JP		 2090 }
2091 break;
2092 case ISDN_STAT_DHUP:
1da177e4 2093#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2094 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
1da177e4 2095#endif
475be4d8
JP		 2096 if (TTY_IS_ACTIVE(info)) {
2097 if (info->dialing == 1)
2098 isdn_tty_modem_result(RESULT_BUSY, info);
2099 if (info->dialing > 1)
2100 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2101 info->dialing = 0;
1da177e4 2102#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2103 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
1da177e4 2104#endif
475be4d8
JP		 2105 isdn_tty_modem_hup(info, 0);
2106 return 1;
2107 }
2108 break;
2109 case ISDN_STAT_BCONN:
1da177e4 2110#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2111 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2112#endif
2113 /* Wake up any processes waiting
2114 * for incoming call of this device when
2115 * DCD follow the state of incoming carrier
2116 */
1b05f030 2117 if (info->port.blocked_open &&
475be4d8 2118 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
c6e92b63 2119 wake_up_interruptible(&info->port.open_wait);
475be4d8 2120 }
1da177e4 2121
475be4d8
JP		 2122 /* Schedule CONNECT-Message to any tty
2123 * waiting for it and
2124 * set DCD-bit of its modem-status.
2125 */
2126 if (TTY_IS_ACTIVE(info) ||
1b05f030
JS		 2127 (info->port.blocked_open &&
2128 (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
475be4d8
JP		 2129 info->msr |= UART_MSR_DCD;
2130 info->emu.charge = 0;
2131 if (info->dialing & 0xf)
2132 info->last_dir = 1;
2133 else
2134 info->last_dir = 0;
2135 info->dialing = 0;
2136 info->rcvsched = 1;
2137 if (USG_MODEM(dev->usage[i])) {
2138 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2139 strcpy(info->emu.connmsg, c->parm.num);
2140 isdn_tty_modem_result(RESULT_CONNECT, info);
2141 } else
2142 isdn_tty_modem_result(RESULT_CONNECT64000, info);
1da177e4 2143 }
475be4d8
JP		 2144 if (USG_VOICE(dev->usage[i]))
2145 isdn_tty_modem_result(RESULT_VCON, info);
2146 return 1;
2147 }
2148 break;
2149 case ISDN_STAT_BHUP:
1da177e4 2150#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2151 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
1da177e4 2152#endif
475be4d8 2153 if (TTY_IS_ACTIVE(info)) {
1da177e4 2154#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2155 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
1da177e4 2156#endif
475be4d8
JP		 2157 isdn_tty_modem_hup(info, 0);
2158 return 1;
2159 }
2160 break;
2161 case ISDN_STAT_NODCH:
1da177e4 2162#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2163 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2164#endif
2165 if (TTY_IS_ACTIVE(info)) {
2166 if (info->dialing) {
2167 info->dialing = 0;
2168 info->last_l2 = -1;
2169 info->last_si = 0;
2170 sprintf(info->last_cause, "0000");
2171 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
1da177e4 2172 }
475be4d8
JP		 2173 isdn_tty_modem_hup(info, 0);
2174 return 1;
2175 }
2176 break;
2177 case ISDN_STAT_UNLOAD:
1da177e4 2178#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2179 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
1da177e4 2180#endif
475be4d8
JP		 2181 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2182 info = &dev->mdm.info[i];
2183 if (info->isdn_driver == c->driver) {
2184 if (info->online)
2185 isdn_tty_modem_hup(info, 1);
1da177e4 2186 }
475be4d8
JP		 2187 }
2188 return 1;
1da177e4 2189#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 2190 case ISDN_STAT_FAXIND:
2191 if (TTY_IS_ACTIVE(info)) {
2192 isdn_tty_fax_command(info, c);
2193 }
2194 break;
1da177e4
LT		 2195#endif
2196#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 2197 case ISDN_STAT_AUDIO:
2198 if (TTY_IS_ACTIVE(info)) {
2199 switch (c->parm.num[0]) {
2200 case ISDN_AUDIO_DTMF:
2201 if (info->vonline) {
2202 isdn_audio_put_dle_code(info,
1da177e4 2203 c->parm.num[1]);
1da177e4 2204 }
475be4d8 2205 break;
1da177e4 2206 }
475be4d8
JP		 2207 }
2208 break;
1da177e4
LT		 2209#endif
2210 }
2211 }
2212 return 0;
2213}
2214
2215/*********************************************************************
2216 Modem-Emulator-Routines
475be4d8 2217*********************************************************************/
1da177e4 2218
475be4d8 2219#define cmdchar(c) ((c >= ' ') && (c <= 0x7f))
1da177e4
LT		 2220
2221/*
2222 * Put a message from the AT-emulator into receive-buffer of tty,
2223 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2224 */
2225void
475be4d8 2226isdn_tty_at_cout(char *msg, modem_info *info)
1da177e4
LT		 2227{
2228 struct tty_struct *tty;
2229 atemu *m = &info->emu;
2230 char *p;
2231 char c;
2232 u_long flags;
2233 struct sk_buff *skb = NULL;
2234 char *sp = NULL;
1f4d4a80 2235 int l;
1da177e4
LT		 2236
2237 if (!msg) {
2238 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2239 return;
2240 }
1f4d4a80
AB		 2241
2242 l = strlen(msg);
2243
1da177e4 2244 spin_lock_irqsave(&info->readlock, flags);
ba43294d 2245 tty = info->port.tty;
48decc1c 2246 if ((info->port.flags & ASYNC_CLOSING) || (!tty)) {
1da177e4
LT		 2247 spin_unlock_irqrestore(&info->readlock, flags);
2248 return;
2249 }
2250
33f0f88f
AC		 2251 /* use queue instead of direct, if online and */
2252 /* data is in queue or buffer is full */
61b9a26a 2253 if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
475be4d8 2254 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
33f0f88f 2255 skb = alloc_skb(l, GFP_ATOMIC);
1da177e4
LT		 2256 if (!skb) {
2257 spin_unlock_irqrestore(&info->readlock, flags);
2258 return;
2259 }
33f0f88f 2260 sp = skb_put(skb, l);
1da177e4
LT		 2261#ifdef CONFIG_ISDN_AUDIO
2262 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2263 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2264#endif
2265 }
2266
2267 for (p = msg; *p; p++) {
2268 switch (*p) {
475be4d8
JP		 2269 case '\r':
2270 c = m->mdmreg[REG_CR];
2271 break;
2272 case '\n':
2273 c = m->mdmreg[REG_LF];
2274 break;
2275 case '\b':
2276 c = m->mdmreg[REG_BS];
2277 break;
2278 default:
2279 c = *p;
1da177e4
LT		 2280 }
2281 if (skb) {
2282 *sp++ = c;
2283 } else {
475be4d8 2284 if (tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
1da177e4 2285 break;
1da177e4
LT		 2286 }
2287 }
2288 if (skb) {
2289 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2290 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2291 spin_unlock_irqrestore(&info->readlock, flags);
2292 /* Schedule dequeuing */
33f0f88f 2293 if (dev->modempoll && info->rcvsched)
1da177e4
LT		 2294 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2295
2296 } else {
2297 spin_unlock_irqrestore(&info->readlock, flags);
33f0f88f 2298 tty_flip_buffer_push(tty);
1da177e4
LT		 2299 }
2300}
2301
2302/*
2303 * Perform ATH Hangup
2304 */
2305static void
475be4d8 2306isdn_tty_on_hook(modem_info *info)
1da177e4
LT		 2307{
2308 if (info->isdn_channel >= 0) {
2309#ifdef ISDN_DEBUG_MODEM_HUP
2310 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2311#endif
2312 isdn_tty_modem_hup(info, 1);
2313 }
2314}
2315
2316static void
2317isdn_tty_off_hook(void)
2318{
2319 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2320}
2321
475be4d8
JP		 2322#define PLUSWAIT1 (HZ / 2) /* 0.5 sec. */
2323#define PLUSWAIT2 (HZ * 3 / 2) /* 1.5 sec */
1da177e4
LT		 2324
2325/*
2326 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2327 * isdn_tty_modem_escape() if sequence found.
2328 *
2329 * Parameters:
2330 * p pointer to databuffer
2331 * plus escape-character
2332 * count length of buffer
2333 * pluscount count of valid escape-characters so far
2334 * lastplus timestamp of last character
2335 */
2336static void
475be4d8 2337isdn_tty_check_esc(const u_char *p, u_char plus, int count, int *pluscount,
1da177e4
LT		 2338 u_long *lastplus)
2339{
2340 if (plus > 127)
2341 return;
2342 if (count > 3) {
2343 p += count - 3;
2344 count = 3;
2345 *pluscount = 0;
2346 }
2347 while (count > 0) {
2348 if (*(p++) == plus) {
2349 if ((*pluscount)++) {
2350 /* Time since last '+' > 0.5 sec. ? */
2351 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2352 *pluscount = 1;
2353 } else {
2354 /* Time since last non-'+' < 1.5 sec. ? */
2355 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2356 *pluscount = 0;
2357 }
2358 if ((*pluscount == 3) && (count == 1))
2359 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2360 if (*pluscount > 3)
2361 *pluscount = 1;
2362 } else
2363 *pluscount = 0;
2364 *lastplus = jiffies;
2365 count--;
2366 }
2367}
2368
2369/*
2370 * Return result of AT-emulator to tty-receive-buffer, depending on
2371 * modem-register 12, bit 0 and 1.
2372 * For CONNECT-messages also switch to online-mode.
2373 * For RING-message handle auto-ATA if register 0 != 0
2374 */
2375
2376static void
475be4d8 2377isdn_tty_modem_result(int code, modem_info *info)
1da177e4
LT		 2378{
2379 atemu *m = &info->emu;
2380 static char *msg[] =
475be4d8
JP		 2381 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2382 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2383 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2384 char s[ISDN_MSNLEN + 10];
1da177e4
LT		 2385
2386 switch (code) {
475be4d8
JP		 2387 case RESULT_RING:
2388 m->mdmreg[REG_RINGCNT]++;
2389 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2390 /* Automatically accept incoming call */
2391 isdn_tty_cmd_ATA(info);
2392 break;
2393 case RESULT_NO_CARRIER:
1da177e4 2394#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2395 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
48decc1c 2396 (info->port.flags & ASYNC_CLOSING),
ba43294d 2397 (!info->port.tty));
475be4d8
JP		 2398#endif
2399 m->mdmreg[REG_RINGCNT] = 0;
2400 del_timer(&info->nc_timer);
2401 info->ncarrier = 0;
ba43294d 2402 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
475be4d8 2403 return;
6776a2f0 2404
1da177e4 2405#ifdef CONFIG_ISDN_AUDIO
475be4d8 2406 if (info->vonline & 1) {
1da177e4 2407#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2408 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2409 info->line);
1da177e4 2410#endif
475be4d8
JP		 2411 /* voice-recording, add DLE-ETX */
2412 isdn_tty_at_cout("\020\003", info);
2413 }
2414 if (info->vonline & 2) {
1da177e4 2415#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2416 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2417 info->line);
1da177e4 2418#endif
475be4d8
JP		 2419 /* voice-playing, add DLE-DC4 */
2420 isdn_tty_at_cout("\020\024", info);
2421 }
1da177e4 2422#endif
475be4d8
JP		 2423 break;
2424 case RESULT_CONNECT:
2425 case RESULT_CONNECT64000:
2426 sprintf(info->last_cause, "0000");
2427 if (!info->online)
2428 info->online = 2;
2429 break;
2430 case RESULT_VCON:
1da177e4 2431#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2432 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2433 info->line);
1da177e4 2434#endif
475be4d8
JP		 2435 sprintf(info->last_cause, "0000");
2436 if (!info->online)
2437 info->online = 1;
2438 break;
2439 } /* switch (code) */
1da177e4
LT		 2440
2441 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2442 /* Show results */
2443 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2444 /* Show numeric results only */
2445 sprintf(s, "\r\n%d\r\n", code);
2446 isdn_tty_at_cout(s, info);
2447 } else {
2448 if (code == RESULT_RING) {
475be4d8
JP		 2449 /* return if "show RUNG" and ringcounter>1 */
2450 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
1da177e4 2451 (m->mdmreg[REG_RINGCNT] > 1))
475be4d8
JP		 2452 return;
2453 /* print CID, _before_ _every_ ring */
2454 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2455 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2456 isdn_tty_at_cout(dev->num[info->drv_index], info);
2457 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2458 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2459 isdn_tty_at_cout(info->emu.cpn, info);
2460 }
2461 }
1da177e4
LT		 2462 }
2463 isdn_tty_at_cout("\r\n", info);
2464 isdn_tty_at_cout(msg[code], info);
2465 switch (code) {
475be4d8
JP		 2466 case RESULT_CONNECT:
2467 switch (m->mdmreg[REG_L2PROT]) {
2468 case ISDN_PROTO_L2_MODEM:
2469 isdn_tty_at_cout(" ", info);
2470 isdn_tty_at_cout(m->connmsg, info);
1da177e4 2471 break;
475be4d8
JP		 2472 }
2473 break;
2474 case RESULT_RING:
2475 /* Append CPN, if enabled */
2476 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2477 sprintf(s, "/%s", m->cpn);
2478 isdn_tty_at_cout(s, info);
2479 }
2480 /* Print CID only once, _after_ 1st RING */
2481 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2482 (m->mdmreg[REG_RINGCNT] == 1)) {
2483 isdn_tty_at_cout("\r\n", info);
2484 isdn_tty_at_cout("CALLER NUMBER: ", info);
2485 isdn_tty_at_cout(dev->num[info->drv_index], info);
2486 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2487 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2488 isdn_tty_at_cout(info->emu.cpn, info);
1da177e4 2489 }
475be4d8
JP		 2490 }
2491 break;
2492 case RESULT_NO_CARRIER:
2493 case RESULT_NO_DIALTONE:
2494 case RESULT_BUSY:
2495 case RESULT_NO_ANSWER:
2496 m->mdmreg[REG_RINGCNT] = 0;
2497 /* Append Cause-Message if enabled */
2498 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2499 sprintf(s, "/%s", info->last_cause);
2500 isdn_tty_at_cout(s, info);
2501 }
2502 break;
2503 case RESULT_CONNECT64000:
2504 /* Append Protocol to CONNECT message */
2505 switch (m->mdmreg[REG_L2PROT]) {
2506 case ISDN_PROTO_L2_X75I:
2507 case ISDN_PROTO_L2_X75UI:
2508 case ISDN_PROTO_L2_X75BUI:
2509 isdn_tty_at_cout("/X.75", info);
1da177e4 2510 break;
475be4d8
JP		 2511 case ISDN_PROTO_L2_HDLC:
2512 isdn_tty_at_cout("/HDLC", info);
1da177e4 2513 break;
475be4d8
JP		 2514 case ISDN_PROTO_L2_V11096:
2515 isdn_tty_at_cout("/V110/9600", info);
2516 break;
2517 case ISDN_PROTO_L2_V11019:
2518 isdn_tty_at_cout("/V110/19200", info);
2519 break;
2520 case ISDN_PROTO_L2_V11038:
2521 isdn_tty_at_cout("/V110/38400", info);
1da177e4 2522 break;
475be4d8
JP		 2523 }
2524 if (m->mdmreg[REG_T70] & BIT_T70) {
2525 isdn_tty_at_cout("/T.70", info);
2526 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2527 isdn_tty_at_cout("+", info);
2528 }
2529 break;
1da177e4
LT		 2530 }
2531 isdn_tty_at_cout("\r\n", info);
2532 }
2533 }
2534 if (code == RESULT_NO_CARRIER) {
ba43294d 2535 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
1da177e4 2536 return;
6776a2f0 2537
48decc1c 2538 if (info->port.flags & ASYNC_CHECK_CD)
ba43294d 2539 tty_hangup(info->port.tty);
1da177e4
LT		 2540 }
2541}
2542
2543
2544/*
2545 * Display a modem-register-value.
2546 */
2547static void
475be4d8 2548isdn_tty_show_profile(int ridx, modem_info *info)
1da177e4
LT		 2549{
2550 char v[6];
2551
2552 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2553 isdn_tty_at_cout(v, info);
2554}
2555
2556/*
2557 * Get MSN-string from char-pointer, set pointer to end of number
2558 */
2559static void
2560isdn_tty_get_msnstr(char *n, char **p)
2561{
2562 int limit = ISDN_MSNLEN - 1;
2563
2564 while (((*p[0] >= '0' && *p[0] <= '9') ||
2565 /* Why a comma ??? */
2566 (*p[0] == ',') || (*p[0] == ':')) &&
475be4d8 2567 (limit--))
1da177e4
LT		 2568 *n++ = *p[0]++;
2569 *n = '\0';
2570}
2571
2572/*
2573 * Get phone-number from modem-commandbuffer
2574 */
2575static void
475be4d8 2576isdn_tty_getdial(char *p, char *q, int cnt)
1da177e4
LT		 2577{
2578 int first = 1;
2579 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
475be4d8 2580 buffer overflow */
1da177e4 2581
475be4d8 2582 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt > 0) {
1da177e4 2583 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
924ad158 2584 ((*p == 'R') && first) ||
1da177e4
LT		 2585 (*p == '*') || (*p == '#')) {
2586 *q++ = *p;
2587 limit--;
2588 }
475be4d8 2589 if (!limit)
1da177e4
LT		 2590 break;
2591 p++;
2592 first = 0;
2593 }
2594 *q = 0;
2595}
2596
2597#define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2598#define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2599
2600static void
475be4d8 2601isdn_tty_report(modem_info *info)
1da177e4
LT		 2602{
2603 atemu *m = &info->emu;
2604 char s[80];
2605
2606 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2607 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2608 isdn_tty_at_cout(s, info);
2609 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2610 isdn_tty_at_cout(s, info);
2611 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2612 switch (info->last_l2) {
475be4d8
JP		 2613 case ISDN_PROTO_L2_X75I:
2614 isdn_tty_at_cout("X.75i", info);
2615 break;
2616 case ISDN_PROTO_L2_X75UI:
2617 isdn_tty_at_cout("X.75ui", info);
2618 break;
2619 case ISDN_PROTO_L2_X75BUI:
2620 isdn_tty_at_cout("X.75bui", info);
2621 break;
2622 case ISDN_PROTO_L2_HDLC:
2623 isdn_tty_at_cout("HDLC", info);
2624 break;
2625 case ISDN_PROTO_L2_V11096:
2626 isdn_tty_at_cout("V.110 9600 Baud", info);
2627 break;
2628 case ISDN_PROTO_L2_V11019:
2629 isdn_tty_at_cout("V.110 19200 Baud", info);
2630 break;
2631 case ISDN_PROTO_L2_V11038:
2632 isdn_tty_at_cout("V.110 38400 Baud", info);
2633 break;
2634 case ISDN_PROTO_L2_TRANS:
2635 isdn_tty_at_cout("transparent", info);
2636 break;
2637 case ISDN_PROTO_L2_MODEM:
2638 isdn_tty_at_cout("modem", info);
2639 break;
2640 case ISDN_PROTO_L2_FAX:
2641 isdn_tty_at_cout("fax", info);
2642 break;
2643 default:
2644 isdn_tty_at_cout("unknown", info);
2645 break;
1da177e4
LT		 2646 }
2647 if (m->mdmreg[REG_T70] & BIT_T70) {
2648 isdn_tty_at_cout("/T.70", info);
2649 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2650 isdn_tty_at_cout("+", info);
2651 }
2652 isdn_tty_at_cout("\r\n", info);
2653 isdn_tty_at_cout(" Service: ", info);
2654 switch (info->last_si) {
475be4d8
JP		 2655 case 1:
2656 isdn_tty_at_cout("audio\r\n", info);
2657 break;
2658 case 5:
2659 isdn_tty_at_cout("btx\r\n", info);
2660 break;
2661 case 7:
2662 isdn_tty_at_cout("data\r\n", info);
2663 break;
2664 default:
2665 sprintf(s, "%d\r\n", info->last_si);
2666 isdn_tty_at_cout(s, info);
2667 break;
1da177e4
LT		 2668 }
2669 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2670 isdn_tty_at_cout(s, info);
2671 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2672 isdn_tty_at_cout(s, info);
2673}
2674
2675/*
2676 * Parse AT&.. commands.
2677 */
2678static int
475be4d8 2679isdn_tty_cmd_ATand(char **p, modem_info *info)
1da177e4
LT		 2680{
2681 atemu *m = &info->emu;
2682 int i;
2683 char rb[100];
2684
2685#define MAXRB (sizeof(rb) - 1)
2686
2687 switch (*p[0]) {
475be4d8
JP		 2688 case 'B':
2689 /* &B - Set Buffersize */
2690 p[0]++;
2691 i = isdn_getnum(p);
2692 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2693 PARSE_ERROR1;
1da177e4 2694#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 2695 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2696 PARSE_ERROR1;
1da177e4 2697#endif
475be4d8
JP		 2698 m->mdmreg[REG_PSIZE] = i / 16;
2699 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2700 switch (m->mdmreg[REG_L2PROT]) {
2701 case ISDN_PROTO_L2_V11096:
2702 case ISDN_PROTO_L2_V11019:
2703 case ISDN_PROTO_L2_V11038:
2704 info->xmit_size /= 10;
2705 }
2706 break;
2707 case 'C':
2708 /* &C - DCD Status */
2709 p[0]++;
2710 switch (isdn_getnum(p)) {
2711 case 0:
2712 m->mdmreg[REG_DCD] &= ~BIT_DCD;
1da177e4 2713 break;
475be4d8
JP		 2714 case 1:
2715 m->mdmreg[REG_DCD] |= BIT_DCD;
1da177e4 2716 break;
475be4d8
JP		 2717 default:
2718 PARSE_ERROR1
2719 }
2720 break;
2721 case 'D':
2722 /* &D - Set DTR-Low-behavior */
2723 p[0]++;
2724 switch (isdn_getnum(p)) {
2725 case 0:
2726 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2727 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
1da177e4 2728 break;
475be4d8
JP		 2729 case 2:
2730 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2731 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2732 break;
2733 case 3:
2734 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2735 m->mdmreg[REG_DTRR] |= BIT_DTRR;
1da177e4 2736 break;
475be4d8
JP		 2737 default:
2738 PARSE_ERROR1
2739 }
2740 break;
2741 case 'E':
2742 /* &E -Set EAZ/MSN */
2743 p[0]++;
2744 isdn_tty_get_msnstr(m->msn, p);
2745 break;
2746 case 'F':
2747 /* &F -Set Factory-Defaults */
2748 p[0]++;
2749 if (info->msr & UART_MSR_DCD)
2750 PARSE_ERROR1;
2751 isdn_tty_reset_profile(m);
2752 isdn_tty_modem_reset_regs(info, 1);
2753 break;
1da177e4 2754#ifdef DUMMY_HAYES_AT
475be4d8
JP		 2755 case 'K':
2756 /* only for be compilant with common scripts */
2757 /* &K Flowcontrol - no function */
2758 p[0]++;
2759 isdn_getnum(p);
2760 break;
2761#endif
2762 case 'L':
2763 /* &L -Set Numbers to listen on */
2764 p[0]++;
2765 i = 0;
2766 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
2767 (i < ISDN_LMSNLEN - 1))
2768 m->lmsn[i++] = *p[0]++;
2769 m->lmsn[i] = '\0';
2770 break;
2771 case 'R':
2772 /* &R - Set V.110 bitrate adaption */
2773 p[0]++;
2774 i = isdn_getnum(p);
2775 switch (i) {
2776 case 0:
2777 /* Switch off V.110, back to X.75 */
2778 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2779 m->mdmreg[REG_SI2] = 0;
2780 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1da177e4 2781 break;
475be4d8
JP		 2782 case 9600:
2783 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2784 m->mdmreg[REG_SI2] = 197;
2785 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2786 break;
475be4d8
JP		 2787 case 19200:
2788 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2789 m->mdmreg[REG_SI2] = 199;
2790 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2791 break;
475be4d8
JP		 2792 case 38400:
2793 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2794 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2795 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2796 break;
475be4d8
JP		 2797 default:
2798 PARSE_ERROR1;
2799 }
2800 /* Switch off T.70 */
2801 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2802 /* Set Service 7 */
2803 m->mdmreg[REG_SI1] |= 4;
2804 break;
2805 case 'S':
2806 /* &S - Set Windowsize */
2807 p[0]++;
2808 i = isdn_getnum(p);
2809 if ((i > 0) && (i < 9))
2810 m->mdmreg[REG_WSIZE] = i;
2811 else
2812 PARSE_ERROR1;
2813 break;
2814 case 'V':
2815 /* &V - Show registers */
2816 p[0]++;
2817 isdn_tty_at_cout("\r\n", info);
2818 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2819 sprintf(rb, "S%02d=%03d%s", i,
2820 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2821 isdn_tty_at_cout(rb, info);
2822 }
2823 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2824 strlen(m->msn) ? m->msn : "None");
2825 isdn_tty_at_cout(rb, info);
2826 if (strlen(m->lmsn)) {
2827 isdn_tty_at_cout("\r\nListen: ", info);
2828 isdn_tty_at_cout(m->lmsn, info);
2829 isdn_tty_at_cout("\r\n", info);
2830 }
2831 break;
2832 case 'W':
2833 /* &W - Write Profile */
2834 p[0]++;
2835 switch (*p[0]) {
2836 case '0':
1da177e4 2837 p[0]++;
475be4d8 2838 modem_write_profile(m);
1da177e4 2839 break;
475be4d8
JP		 2840 default:
2841 PARSE_ERROR1;
2842 }
2843 break;
2844 case 'X':
2845 /* &X - Switch to BTX-Mode and T.70 */
2846 p[0]++;
2847 switch (isdn_getnum(p)) {
2848 case 0:
2849 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2850 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2851 break;
2852 case 1:
2853 m->mdmreg[REG_T70] |= BIT_T70;
2854 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2855 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2856 info->xmit_size = 112;
2857 m->mdmreg[REG_SI1] = 4;
2858 m->mdmreg[REG_SI2] = 0;
2859 break;
2860 case 2:
2861 m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT);
2862 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2863 info->xmit_size = 112;
2864 m->mdmreg[REG_SI1] = 4;
2865 m->mdmreg[REG_SI2] = 0;
1da177e4
LT		 2866 break;
2867 default:
2868 PARSE_ERROR1;
475be4d8
JP		 2869 }
2870 break;
2871 default:
2872 PARSE_ERROR1;
1da177e4
LT		 2873 }
2874 return 0;
2875}
2876
2877static int
475be4d8 2878isdn_tty_check_ats(int mreg, int mval, modem_info *info, atemu *m)
1da177e4
LT		 2879{
2880 /* Some plausibility checks */
2881 switch (mreg) {
475be4d8
JP		 2882 case REG_L2PROT:
2883 if (mval > ISDN_PROTO_L2_MAX)
2884 return 1;
2885 break;
2886 case REG_PSIZE:
2887 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2888 return 1;
1da177e4 2889#ifdef CONFIG_ISDN_AUDIO
475be4d8 2890 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
1da177e4 2891 return 1;
475be4d8
JP		 2892#endif
2893 info->xmit_size = mval * 16;
2894 switch (m->mdmreg[REG_L2PROT]) {
2895 case ISDN_PROTO_L2_V11096:
2896 case ISDN_PROTO_L2_V11019:
2897 case ISDN_PROTO_L2_V11038:
2898 info->xmit_size /= 10;
2899 }
2900 break;
2901 case REG_SI1I:
2902 case REG_PLAN:
2903 case REG_SCREEN:
2904 /* readonly registers */
2905 return 1;
1da177e4
LT		 2906 }
2907 return 0;
2908}
2909
2910/*
2911 * Perform ATS command
2912 */
2913static int
475be4d8 2914isdn_tty_cmd_ATS(char **p, modem_info *info)
1da177e4
LT		 2915{
2916 atemu *m = &info->emu;
2917 int bitpos;
2918 int mreg;
2919 int mval;
2920 int bval;
2921
2922 mreg = isdn_getnum(p);
2923 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
2924 PARSE_ERROR1;
2925 switch (*p[0]) {
475be4d8
JP		 2926 case '=':
2927 p[0]++;
2928 mval = isdn_getnum(p);
2929 if (mval < 0 || mval > 255)
2930 PARSE_ERROR1;
2931 if (isdn_tty_check_ats(mreg, mval, info, m))
2932 PARSE_ERROR1;
2933 m->mdmreg[mreg] = mval;
2934 break;
2935 case '.':
2936 /* Set/Clear a single bit */
2937 p[0]++;
2938 bitpos = isdn_getnum(p);
2939 if ((bitpos < 0) || (bitpos > 7))
2940 PARSE_ERROR1;
2941 switch (*p[0]) {
1da177e4
LT		 2942 case '=':
2943 p[0]++;
475be4d8
JP		 2944 bval = isdn_getnum(p);
2945 if (bval < 0 || bval > 1)
1da177e4 2946 PARSE_ERROR1;
475be4d8
JP		 2947 if (bval)
2948 mval = m->mdmreg[mreg] | (1 << bitpos);
2949 else
2950 mval = m->mdmreg[mreg] & ~(1 << bitpos);
1da177e4
LT		 2951 if (isdn_tty_check_ats(mreg, mval, info, m))
2952 PARSE_ERROR1;
2953 m->mdmreg[mreg] = mval;
2954 break;
1da177e4
LT		 2955 case '?':
2956 p[0]++;
475be4d8
JP		 2957 isdn_tty_at_cout("\r\n", info);
2958 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
2959 info);
1da177e4
LT		 2960 break;
2961 default:
2962 PARSE_ERROR1;
475be4d8
JP		 2963 }
2964 break;
2965 case '?':
2966 p[0]++;
2967 isdn_tty_show_profile(mreg, info);
2968 break;
2969 default:
2970 PARSE_ERROR1;
2971 break;
1da177e4
LT		 2972 }
2973 return 0;
2974}
2975
2976/*
2977 * Perform ATA command
2978 */
2979static void
475be4d8 2980isdn_tty_cmd_ATA(modem_info *info)
1da177e4
LT		 2981{
2982 atemu *m = &info->emu;
2983 isdn_ctrl cmd;
2984 int l2;
2985
2986 if (info->msr & UART_MSR_RI) {
2987 /* Accept incoming call */
2988 info->last_dir = 0;
2989 strcpy(info->last_num, dev->num[info->drv_index]);
2990 m->mdmreg[REG_RINGCNT] = 0;
2991 info->msr &= ~UART_MSR_RI;
2992 l2 = m->mdmreg[REG_L2PROT];
2993#ifdef CONFIG_ISDN_AUDIO
2994 /* If more than one bit set in reg18, autoselect Layer2 */
2995 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
2996 if (m->mdmreg[REG_SI1I] == 1) {
2997 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
2998 l2 = ISDN_PROTO_L2_TRANS;
2999 } else
3000 l2 = ISDN_PROTO_L2_X75I;
3001 }
3002#endif
3003 cmd.driver = info->isdn_driver;
3004 cmd.command = ISDN_CMD_SETL2;
3005 cmd.arg = info->isdn_channel + (l2 << 8);
3006 info->last_l2 = l2;
3007 isdn_command(&cmd);
3008 cmd.driver = info->isdn_driver;
3009 cmd.command = ISDN_CMD_SETL3;
3010 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3011#ifdef CONFIG_ISDN_TTY_FAX
3012 if (l2 == ISDN_PROTO_L2_FAX) {
3013 cmd.parm.fax = info->fax;
3014 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3015 }
3016#endif
3017 isdn_command(&cmd);
3018 cmd.driver = info->isdn_driver;
3019 cmd.arg = info->isdn_channel;
3020 cmd.command = ISDN_CMD_ACCEPTD;
3021 info->dialing = 16;
3022 info->emu.carrierwait = 0;
3023 isdn_command(&cmd);
3024 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3025 } else
3026 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3027}
3028
3029#ifdef CONFIG_ISDN_AUDIO
3030/*
3031 * Parse AT+F.. commands
3032 */
3033static int
475be4d8 3034isdn_tty_cmd_PLUSF(char **p, modem_info *info)
1da177e4
LT		 3035{
3036 atemu *m = &info->emu;
3037 char rs[20];
3038
3039 if (!strncmp(p[0], "CLASS", 5)) {
3040 p[0] += 5;
3041 switch (*p[0]) {
475be4d8
JP		 3042 case '?':
3043 p[0]++;
3044 sprintf(rs, "\r\n%d",
3045 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
1da177e4 3046#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3047 if (TTY_IS_FCLASS2(info))
3048 sprintf(rs, "\r\n2");
3049 else if (TTY_IS_FCLASS1(info))
3050 sprintf(rs, "\r\n1");
1da177e4 3051#endif
475be4d8
JP		 3052 isdn_tty_at_cout(rs, info);
3053 break;
3054 case '=':
3055 p[0]++;
3056 switch (*p[0]) {
3057 case '0':
1da177e4 3058 p[0]++;
475be4d8
JP		 3059 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3060 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3061 m->mdmreg[REG_SI1] = 4;
3062 info->xmit_size =
3063 m->mdmreg[REG_PSIZE] * 16;
3064 break;
1da177e4 3065#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3066 case '1':
3067 p[0]++;
3068 if (!(dev->global_features &
3069 ISDN_FEATURE_L3_FCLASS1))
3070 PARSE_ERROR1;
3071 m->mdmreg[REG_SI1] = 1;
3072 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3073 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3074 info->xmit_size =
3075 m->mdmreg[REG_PSIZE] * 16;
3076 break;
3077 case '2':
3078 p[0]++;
3079 if (!(dev->global_features &
3080 ISDN_FEATURE_L3_FCLASS2))
3081 PARSE_ERROR1;
3082 m->mdmreg[REG_SI1] = 1;
3083 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3084 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3085 info->xmit_size =
3086 m->mdmreg[REG_PSIZE] * 16;
3087 break;
1da177e4 3088#endif
475be4d8
JP		 3089 case '8':
3090 p[0]++;
3091 /* L2 will change on dialout with si=1 */
3092 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3093 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3094 m->mdmreg[REG_SI1] = 5;
3095 info->xmit_size = VBUF;
3096 break;
3097 case '?':
3098 p[0]++;
3099 strcpy(rs, "\r\n0,");
1da177e4 3100#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3101 if (dev->global_features &
3102 ISDN_FEATURE_L3_FCLASS1)
3103 strcat(rs, "1,");
3104 if (dev->global_features &
3105 ISDN_FEATURE_L3_FCLASS2)
3106 strcat(rs, "2,");
3107#endif
3108 strcat(rs, "8");
3109 isdn_tty_at_cout(rs, info);
1da177e4
LT		 3110 break;
3111 default:
3112 PARSE_ERROR1;
475be4d8
JP		 3113 }
3114 break;
3115 default:
3116 PARSE_ERROR1;
1da177e4
LT		 3117 }
3118 return 0;
3119 }
3120#ifdef CONFIG_ISDN_TTY_FAX
3121 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3122#else
3123 PARSE_ERROR1;
3124#endif
3125}
3126
3127/*
3128 * Parse AT+V.. commands
3129 */
3130static int
475be4d8 3131isdn_tty_cmd_PLUSV(char **p, modem_info *info)
1da177e4
LT		 3132{
3133 atemu *m = &info->emu;
3134 isdn_ctrl cmd;
3135 static char *vcmd[] =
475be4d8 3136 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
1da177e4
LT		 3137 int i;
3138 int par1;
3139 int par2;
3140 char rs[20];
3141
3142 i = 0;
3143 while (vcmd[i]) {
3144 if (!strncmp(vcmd[i], p[0], 2)) {
3145 p[0] += 2;
3146 break;
3147 }
3148 i++;
3149 }
3150 switch (i) {
475be4d8
JP		 3151 case 0:
3152 /* AT+VNH - Auto hangup feature */
3153 switch (*p[0]) {
3154 case '?':
3155 p[0]++;
3156 isdn_tty_at_cout("\r\n1", info);
3157 break;
3158 case '=':
3159 p[0]++;
1da177e4 3160 switch (*p[0]) {
475be4d8
JP		 3161 case '1':
3162 p[0]++;
3163 break;
3164 case '?':
3165 p[0]++;
3166 isdn_tty_at_cout("\r\n1", info);
3167 break;
3168 default:
3169 PARSE_ERROR1;
1da177e4
LT		 3170 }
3171 break;
475be4d8
JP		 3172 default:
3173 PARSE_ERROR1;
3174 }
3175 break;
3176 case 1:
3177 /* AT+VIP - Reset all voice parameters */
3178 isdn_tty_modem_reset_vpar(m);
3179 break;
3180 case 2:
3181 /* AT+VLS - Select device, accept incoming call */
3182 switch (*p[0]) {
3183 case '?':
3184 p[0]++;
3185 sprintf(rs, "\r\n%d", m->vpar[0]);
3186 isdn_tty_at_cout(rs, info);
1da177e4 3187 break;
475be4d8
JP		 3188 case '=':
3189 p[0]++;
1da177e4 3190 switch (*p[0]) {
475be4d8
JP		 3191 case '0':
3192 p[0]++;
3193 m->vpar[0] = 0;
3194 break;
3195 case '2':
3196 p[0]++;
3197 m->vpar[0] = 2;
3198 break;
3199 case '?':
3200 p[0]++;
3201 isdn_tty_at_cout("\r\n0,2", info);
3202 break;
3203 default:
1da177e4
LT		 3204 PARSE_ERROR1;
3205 }
475be4d8
JP		 3206 break;
3207 default:
3208 PARSE_ERROR1;
3209 }
3210 break;
3211 case 3:
3212 /* AT+VRX - Start recording */
3213 if (!m->vpar[0])
3214 PARSE_ERROR1;
3215 if (info->online != 1) {
3216 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3217 return 1;
3218 }
3219 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3220 if (!info->dtmf_state) {
3221 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3222 PARSE_ERROR1;
3223 }
3224 info->silence_state = isdn_audio_silence_init(info->silence_state);
3225 if (!info->silence_state) {
3226 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3227 PARSE_ERROR1;
3228 }
3229 if (m->vpar[3] < 5) {
3230 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3231 if (!info->adpcmr) {
3232 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
1da177e4
LT		 3233 PARSE_ERROR1;
3234 }
475be4d8 3235 }
1da177e4 3236#ifdef ISDN_DEBUG_AT
475be4d8 3237 printk(KERN_DEBUG "AT: +VRX\n");
1da177e4 3238#endif
475be4d8
JP		 3239 info->vonline |= 1;
3240 isdn_tty_modem_result(RESULT_CONNECT, info);
3241 return 0;
3242 break;
3243 case 4:
3244 /* AT+VSD - Silence detection */
3245 switch (*p[0]) {
3246 case '?':
3247 p[0]++;
3248 sprintf(rs, "\r\n<%d>,<%d>",
3249 m->vpar[1],
3250 m->vpar[2]);
3251 isdn_tty_at_cout(rs, info);
1da177e4 3252 break;
475be4d8
JP		 3253 case '=':
3254 p[0]++;
3255 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3256 par1 = isdn_getnum(p);
3257 if ((par1 < 0) || (par1 > 31))
1da177e4 3258 PARSE_ERROR1;
475be4d8 3259 if (*p[0] != ',')
1da177e4 3260 PARSE_ERROR1;
475be4d8
JP		 3261 p[0]++;
3262 par2 = isdn_getnum(p);
3263 if ((par2 < 0) || (par2 > 255))
3264 PARSE_ERROR1;
3265 m->vpar[1] = par1;
3266 m->vpar[2] = par2;
3267 break;
3268 } else
3269 if (*p[0] == '?') {
1da177e4 3270 p[0]++;
475be4d8
JP		 3271 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3272 info);
1da177e4 3273 break;
475be4d8 3274 } else
1da177e4 3275 PARSE_ERROR1;
1da177e4 3276 break;
475be4d8
JP		 3277 default:
3278 PARSE_ERROR1;
3279 }
3280 break;
3281 case 5:
3282 /* AT+VSM - Select compression */
3283 switch (*p[0]) {
3284 case '?':
3285 p[0]++;
3286 sprintf(rs, "\r\n<%d>,<%d><8000>",
3287 m->vpar[3],
3288 m->vpar[1]);
3289 isdn_tty_at_cout(rs, info);
3290 break;
3291 case '=':
3292 p[0]++;
3293 switch (*p[0]) {
3294 case '2':
3295 case '3':
3296 case '4':
3297 case '5':
3298 case '6':
3299 par1 = isdn_getnum(p);
3300 if ((par1 < 2) || (par1 > 6))
3301 PARSE_ERROR1;
3302 m->vpar[3] = par1;
3303 break;
3304 case '?':
3305 p[0]++;
3306 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3307 info);
3308 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3309 info);
3310 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3311 info);
3312 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3313 info);
3314 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3315 info);
3316 break;
3317 default:
1da177e4 3318 PARSE_ERROR1;
1da177e4 3319 }
475be4d8
JP		 3320 break;
3321 default:
3322 PARSE_ERROR1;
3323 }
3324 break;
3325 case 6:
3326 /* AT+VTX - Start sending */
3327 if (!m->vpar[0])
3328 PARSE_ERROR1;
3329 if (info->online != 1) {
3330 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3331 return 1;
3332 }
3333 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3334 if (!info->dtmf_state) {
3335 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3336 PARSE_ERROR1;
3337 }
3338 if (m->vpar[3] < 5) {
3339 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3340 if (!info->adpcms) {
3341 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
1da177e4
LT		 3342 PARSE_ERROR1;
3343 }
475be4d8 3344 }
1da177e4 3345#ifdef ISDN_DEBUG_AT
475be4d8 3346 printk(KERN_DEBUG "AT: +VTX\n");
1da177e4 3347#endif
475be4d8
JP		 3348 m->lastDLE = 0;
3349 info->vonline |= 2;
3350 isdn_tty_modem_result(RESULT_CONNECT, info);
3351 return 0;
3352 break;
3353 case 7:
3354 /* AT+VDD - DTMF detection */
3355 switch (*p[0]) {
3356 case '?':
3357 p[0]++;
3358 sprintf(rs, "\r\n<%d>,<%d>",
3359 m->vpar[4],
3360 m->vpar[5]);
3361 isdn_tty_at_cout(rs, info);
1da177e4 3362 break;
475be4d8
JP		 3363 case '=':
3364 p[0]++;
3365 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3366 if (info->online != 1)
3367 PARSE_ERROR1;
3368 par1 = isdn_getnum(p);
3369 if ((par1 < 0) || (par1 > 15))
3370 PARSE_ERROR1;
3371 if (*p[0] != ',')
1da177e4 3372 PARSE_ERROR1;
475be4d8
JP		 3373 p[0]++;
3374 par2 = isdn_getnum(p);
3375 if ((par2 < 0) || (par2 > 255))
3376 PARSE_ERROR1;
3377 m->vpar[4] = par1;
3378 m->vpar[5] = par2;
3379 cmd.driver = info->isdn_driver;
3380 cmd.command = ISDN_CMD_AUDIO;
3381 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3382 cmd.parm.num[0] = par1;
3383 cmd.parm.num[1] = par2;
3384 isdn_command(&cmd);
3385 break;
3386 } else
3387 if (*p[0] == '?') {
3388 p[0]++;
3389 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3390 info);
1da177e4 3391 break;
475be4d8 3392 } else
1da177e4 3393 PARSE_ERROR1;
1da177e4
LT		 3394 break;
3395 default:
3396 PARSE_ERROR1;
475be4d8
JP		 3397 }
3398 break;
3399 default:
3400 PARSE_ERROR1;
1da177e4
LT		 3401 }
3402 return 0;
3403}
3404#endif /* CONFIG_ISDN_AUDIO */
3405
3406/*
3407 * Parse and perform an AT-command-line.
3408 */
3409static void
475be4d8 3410isdn_tty_parse_at(modem_info *info)
1da177e4
LT		 3411{
3412 atemu *m = &info->emu;
3413 char *p;
f417f5e4 3414 char ds[ISDN_MSNLEN];
1da177e4
LT		 3415
3416#ifdef ISDN_DEBUG_AT
3417 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3418#endif
3419 for (p = &m->mdmcmd[2]; *p;) {
3420 switch (*p) {
475be4d8
JP		 3421 case ' ':
3422 p++;
3423 break;
3424 case 'A':
3425 /* A - Accept incoming call */
3426 p++;
3427 isdn_tty_cmd_ATA(info);
3428 return;
3429 break;
3430 case 'D':
3431 /* D - Dial */
3432 if (info->msr & UART_MSR_DCD)
3433 PARSE_ERROR;
3434 if (info->msr & UART_MSR_RI) {
3435 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3436 return;
3437 }
3438 isdn_tty_getdial(++p, ds, sizeof ds);
3439 p += strlen(p);
3440 if (!strlen(m->msn))
3441 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3442 else if (strlen(ds))
3443 isdn_tty_dial(ds, info, m);
3444 else
3445 PARSE_ERROR;
3446 return;
3447 case 'E':
3448 /* E - Turn Echo on/off */
3449 p++;
3450 switch (isdn_getnum(&p)) {
3451 case 0:
3452 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
1da177e4 3453 break;
475be4d8
JP		 3454 case 1:
3455 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3456 break;
3457 default:
3458 PARSE_ERROR;
3459 }
3460 break;
3461 case 'H':
3462 /* H - On/Off-hook */
3463 p++;
3464 switch (*p) {
3465 case '0':
1da177e4 3466 p++;
475be4d8 3467 isdn_tty_on_hook(info);
1da177e4 3468 break;
475be4d8 3469 case '1':
1da177e4 3470 p++;
475be4d8 3471 isdn_tty_off_hook();
1da177e4 3472 break;
475be4d8
JP		 3473 default:
3474 isdn_tty_on_hook(info);
3475 break;
3476 }
3477 break;
3478 case 'I':
3479 /* I - Information */
3480 p++;
3481 isdn_tty_at_cout("\r\nLinux ISDN", info);
3482 switch (*p) {
3483 case '0':
3484 case '1':
1da177e4 3485 p++;
1da177e4 3486 break;
475be4d8 3487 case '2':
1da177e4 3488 p++;
475be4d8 3489 isdn_tty_report(info);
1da177e4 3490 break;
475be4d8 3491 case '3':
1da177e4 3492 p++;
475be4d8
JP		 3493 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
3494 isdn_tty_at_cout(ds, info);
1da177e4 3495 break;
475be4d8
JP		 3496 default:;
3497 }
3498 break;
3499#ifdef DUMMY_HAYES_AT
3500 case 'L':
3501 case 'M':
3502 /* only for be compilant with common scripts */
3503 /* no function */
3504 p++;
3505 isdn_getnum(&p);
3506 break;
1da177e4 3507#endif
475be4d8
JP		 3508 case 'O':
3509 /* O - Go online */
3510 p++;
3511 if (info->msr & UART_MSR_DCD)
3512 /* if B-Channel is up */
3513 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT : RESULT_CONNECT64000, info);
3514 else
3515 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3516 return;
3517 case 'Q':
3518 /* Q - Turn Emulator messages on/off */
3519 p++;
3520 switch (isdn_getnum(&p)) {
3521 case 0:
3522 m->mdmreg[REG_RESP] |= BIT_RESP;
3523 break;
3524 case 1:
3525 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3526 break;
3527 default:
3528 PARSE_ERROR;
3529 }
3530 break;
3531 case 'S':
3532 /* S - Set/Get Register */
3533 p++;
3534 if (isdn_tty_cmd_ATS(&p, info))
1da177e4 3535 return;
475be4d8
JP		 3536 break;
3537 case 'V':
3538 /* V - Numeric or ASCII Emulator-messages */
3539 p++;
3540 switch (isdn_getnum(&p)) {
3541 case 0:
3542 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3543 break;
3544 case 1:
3545 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
1da177e4 3546 break;
475be4d8
JP		 3547 default:
3548 PARSE_ERROR;
3549 }
3550 break;
3551 case 'Z':
3552 /* Z - Load Registers from Profile */
3553 p++;
3554 if (info->msr & UART_MSR_DCD) {
3555 info->online = 0;
3556 isdn_tty_on_hook(info);
3557 }
3558 isdn_tty_modem_reset_regs(info, 1);
3559 break;
3560 case '+':
3561 p++;
3562 switch (*p) {
3563#ifdef CONFIG_ISDN_AUDIO
3564 case 'F':
1da177e4 3565 p++;
475be4d8 3566 if (isdn_tty_cmd_PLUSF(&p, info))
1da177e4
LT		 3567 return;
3568 break;
3569 case 'V':
475be4d8
JP		 3570 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3571 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3572 PARSE_ERROR;
1da177e4 3573 p++;
475be4d8
JP		 3574 if (isdn_tty_cmd_PLUSV(&p, info))
3575 return;
1da177e4 3576 break;
475be4d8
JP		 3577#endif /* CONFIG_ISDN_AUDIO */
3578 case 'S': /* SUSPEND */
1da177e4 3579 p++;
475be4d8
JP		 3580 isdn_tty_get_msnstr(ds, &p);
3581 isdn_tty_suspend(ds, info, m);
1da177e4 3582 break;
475be4d8 3583 case 'R': /* RESUME */
1da177e4 3584 p++;
475be4d8
JP		 3585 isdn_tty_get_msnstr(ds, &p);
3586 isdn_tty_resume(ds, info, m);
1da177e4 3587 break;
475be4d8 3588 case 'M': /* MESSAGE */
1da177e4 3589 p++;
475be4d8 3590 isdn_tty_send_msg(info, m, p);
1da177e4
LT		 3591 break;
3592 default:
3593 PARSE_ERROR;
475be4d8
JP		 3594 }
3595 break;
3596 case '&':
3597 p++;
3598 if (isdn_tty_cmd_ATand(&p, info))
3599 return;
3600 break;
3601 default:
3602 PARSE_ERROR;
1da177e4
LT		 3603 }
3604 }
3605#ifdef CONFIG_ISDN_AUDIO
3606 if (!info->vonline)
3607#endif
3608 isdn_tty_modem_result(RESULT_OK, info);
3609}
3610
3611/* Need own toupper() because standard-toupper is not available
3612 * within modules.
3613 */
475be4d8 3614#define my_toupper(c) (((c >= 'a') && (c <= 'z')) ? (c & 0xdf) : c)
1da177e4
LT		 3615
3616/*
3617 * Perform line-editing of AT-commands
3618 *
3619 * Parameters:
3620 * p inputbuffer
3621 * count length of buffer
3622 * channel index to line (minor-device)
3623 */
3624static int
475be4d8 3625isdn_tty_edit_at(const char *p, int count, modem_info *info)
1da177e4
LT		 3626{
3627 atemu *m = &info->emu;
3628 int total = 0;
3629 u_char c;
3630 char eb[2];
3631 int cnt;
3632
3633 for (cnt = count; cnt > 0; p++, cnt--) {
3634 c = *p;
3635 total++;
3636 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3637 /* Separator (CR or LF) */
3638 m->mdmcmd[m->mdmcmdl] = 0;
3639 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3640 eb[0] = c;
3641 eb[1] = 0;
3642 isdn_tty_at_cout(eb, info);
3643 }
3644 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3645 isdn_tty_parse_at(info);
3646 m->mdmcmdl = 0;
3647 continue;
3648 }
3649 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3650 /* Backspace-Function */
3651 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3652 if (m->mdmcmdl)
3653 m->mdmcmdl--;
3654 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3655 isdn_tty_at_cout("\b", info);
3656 }
3657 continue;
3658 }
3659 if (cmdchar(c)) {
3660 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3661 eb[0] = c;
3662 eb[1] = 0;
3663 isdn_tty_at_cout(eb, info);
3664 }
3665 if (m->mdmcmdl < 255) {
3666 c = my_toupper(c);
3667 switch (m->mdmcmdl) {
475be4d8
JP		 3668 case 1:
3669 if (c == 'T') {
3670 m->mdmcmd[m->mdmcmdl] = c;
3671 m->mdmcmd[++m->mdmcmdl] = 0;
1da177e4 3672 break;
475be4d8
JP		 3673 } else
3674 m->mdmcmdl = 0;
3675 /* Fall through, check for 'A' */
3676 case 0:
3677 if (c == 'A') {
1da177e4
LT		 3678 m->mdmcmd[m->mdmcmdl] = c;
3679 m->mdmcmd[++m->mdmcmdl] = 0;
475be4d8
JP		 3680 }
3681 break;
3682 default:
3683 m->mdmcmd[m->mdmcmdl] = c;
3684 m->mdmcmd[++m->mdmcmdl] = 0;
1da177e4
LT		 3685 }
3686 }
3687 }
3688 }
3689 return total;
3690}
3691
3692/*
3693 * Switch all modem-channels who are online and got a valid
3694 * escape-sequence 1.5 seconds ago, to command-mode.
3695 * This function is called every second via timer-interrupt from within
3696 * timer-dispatcher isdn_timer_function()
3697 */
3698void
3699isdn_tty_modem_escape(void)
3700{
3701 int ton = 0;
3702 int i;
3703 int midx;
3704
3705 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
37630f40
JS		 3706 if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) {
3707 modem_info *info = &dev->mdm.info[midx];
3708 if (info->online) {
3709 ton = 1;
3710 if ((info->emu.pluscount == 3) &&
3711 time_after(jiffies,
3712 info->emu.lastplus + PLUSWAIT2)) {
3713 info->emu.pluscount = 0;
3714 info->online = 0;
3715 isdn_tty_modem_result(RESULT_OK, info);
1da177e4
LT		 3716 }
3717 }
37630f40 3718 }
1da177e4
LT		 3719 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3720}
3721
3722/*
3723 * Put a RING-message to all modem-channels who have the RI-bit set.
3724 * This function is called every second via timer-interrupt from within
3725 * timer-dispatcher isdn_timer_function()
3726 */
3727void
3728isdn_tty_modem_ring(void)
3729{
3730 int ton = 0;
3731 int i;
3732
3733 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3734 modem_info *info = &dev->mdm.info[i];
3735 if (info->msr & UART_MSR_RI) {
3736 ton = 1;
3737 isdn_tty_modem_result(RESULT_RING, info);
3738 }
3739 }
3740 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3741}
3742
3743/*
3744 * For all online tty's, try sending data to
3745 * the lower levels.
3746 */
3747void
3748isdn_tty_modem_xmit(void)
3749{
3750 int ton = 1;
3751 int i;
3752
3753 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3754 modem_info *info = &dev->mdm.info[i];
3755 if (info->online) {
3756 ton = 1;
3757 isdn_tty_senddown(info);
3758 isdn_tty_tint(info);
3759 }
3760 }
3761 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3762}
3763
3764/*
3765 * Check all channels if we have a 'no carrier' timeout.
3766 * Timeout value is set by Register S7.
3767 */
3768void
3769isdn_tty_carrier_timeout(void)
3770{
3771 int ton = 0;
3772 int i;
3773
3774 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3775 modem_info *info = &dev->mdm.info[i];
37630f40
JS		 3776 if (!info->dialing)
3777 continue;
3778 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3779 info->dialing = 0;
3780 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3781 isdn_tty_modem_hup(info, 1);
3782 } else
3783 ton = 1;
1da177e4
LT		 3784 }
3785 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);
3786}
Linux kernel - Deliverables
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