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tty: move the termios object into the tty
[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
1da177e4
LT		 1489/*
1490 * This routine is called whenever a serial port is opened. It
1491 * enables interrupts for a serial port, linking in its async structure into
1492 * the IRQ chain. It also performs the serial-specific
1493 * initialization for the tty structure.
1494 */
1495static int
1496isdn_tty_open(struct tty_struct *tty, struct file *filp)
1497{
265d6f00 1498 struct tty_port *port;
1da177e4 1499 modem_info *info;
410235fd 1500 int retval;
1da177e4 1501
410235fd 1502 info = &dev->mdm.info[tty->index];
1da177e4
LT		 1503 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))
1504 return -ENODEV;
265d6f00 1505 port = &info->port;
1da177e4 1506#ifdef ISDN_DEBUG_MODEM_OPEN
475be4d8 1507 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
265d6f00 1508 port->count);
1da177e4 1509#endif
265d6f00 1510 port->count++;
1da177e4 1511 tty->driver_data = info;
265d6f00
JS		 1512 port->tty = tty;
1513 tty->port = port;
1da177e4
LT		 1514 /*
1515 * Start up serial port
1516 */
1517 retval = isdn_tty_startup(info);
1518 if (retval) {
1519#ifdef ISDN_DEBUG_MODEM_OPEN
1520 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1521#endif
1da177e4
LT		 1522 return retval;
1523 }
875d54aa 1524 retval = tty_port_block_til_ready(port, tty, filp);
1da177e4
LT		 1525 if (retval) {
1526#ifdef ISDN_DEBUG_MODEM_OPEN
1527 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1528#endif
1da177e4
LT		 1529 return retval;
1530 }
1531#ifdef ISDN_DEBUG_MODEM_OPEN
1532 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1533#endif
1534 dev->modempoll++;
1535#ifdef ISDN_DEBUG_MODEM_OPEN
1536 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1537#endif
1538 return 0;
1539}
1540
1541static void
1542isdn_tty_close(struct tty_struct *tty, struct file *filp)
1543{
1544 modem_info *info = (modem_info *) tty->driver_data;
265d6f00 1545 struct tty_port *port = &info->port;
1da177e4
LT		 1546 ulong timeout;
1547
1548 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1549 return;
1550 if (tty_hung_up_p(filp)) {
1551#ifdef ISDN_DEBUG_MODEM_OPEN
1552 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1553#endif
1554 return;
1555 }
265d6f00 1556 if ((tty->count == 1) && (port->count != 1)) {
1da177e4
LT		 1557 /*
1558 * Uh, oh. tty->count is 1, which means that the tty
1559 * structure will be freed. Info->count should always
1560 * be one in these conditions. If it's greater than
1561 * one, we've got real problems, since it means the
1562 * serial port won't be shutdown.
1563 */
1564 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
265d6f00
JS		 1565 "info->count is %d\n", port->count);
1566 port->count = 1;
1da177e4 1567 }
265d6f00 1568 if (--port->count < 0) {
1da177e4 1569 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
265d6f00
JS		 1570 info->line, port->count);
1571 port->count = 0;
1da177e4 1572 }
265d6f00 1573 if (port->count) {
1da177e4
LT		 1574#ifdef ISDN_DEBUG_MODEM_OPEN
1575 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1576#endif
1577 return;
1578 }
265d6f00 1579 port->flags |= ASYNC_CLOSING;
1da177e4
LT		 1580
1581 tty->closing = 1;
1582 /*
1583 * At this point we stop accepting input. To do this, we
1584 * disable the receive line status interrupts, and tell the
1585 * interrupt driver to stop checking the data ready bit in the
1586 * line status register.
1587 */
265d6f00 1588 if (port->flags & ASYNC_INITIALIZED) {
0b058353 1589 tty_wait_until_sent_from_close(tty, 3000); /* 30 seconds timeout */
1da177e4
LT		 1590 /*
1591 * Before we drop DTR, make sure the UART transmitter
1592 * has completely drained; this is especially
1593 * important if there is a transmit FIFO!
1594 */
1595 timeout = jiffies + HZ;
1596 while (!(info->lsr & UART_LSR_TEMT)) {
24763c48 1597 schedule_timeout_interruptible(20);
475be4d8 1598 if (time_after(jiffies, timeout))
1da177e4
LT		 1599 break;
1600 }
1601 }
1602 dev->modempoll--;
1603 isdn_tty_shutdown(info);
978e595f 1604 isdn_tty_flush_buffer(tty);
1da177e4 1605 tty_ldisc_flush(tty);
265d6f00 1606 port->tty = NULL;
1da177e4 1607 info->ncarrier = 0;
4330d663
JS		 1608
1609 tty_port_close_end(port, tty);
1da177e4
LT		 1610#ifdef ISDN_DEBUG_MODEM_OPEN
1611 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1612#endif
1613}
1614
1615/*
1616 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1617 */
1618static void
1619isdn_tty_hangup(struct tty_struct *tty)
1620{
1621 modem_info *info = (modem_info *) tty->driver_data;
265d6f00 1622 struct tty_port *port = &info->port;
1da177e4
LT		 1623
1624 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1625 return;
1626 isdn_tty_shutdown(info);
265d6f00
JS		 1627 port->count = 0;
1628 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1629 port->tty = NULL;
1630 wake_up_interruptible(&port->open_wait);
1da177e4
LT		 1631}
1632
1633/* This routine initializes all emulator-data.
1634 */
1635static void
475be4d8 1636isdn_tty_reset_profile(atemu *m)
1da177e4
LT		 1637{
1638 m->profile[0] = 0;
1639 m->profile[1] = 0;
1640 m->profile[2] = 43;
1641 m->profile[3] = 13;
1642 m->profile[4] = 10;
1643 m->profile[5] = 8;
1644 m->profile[6] = 3;
1645 m->profile[7] = 60;
1646 m->profile[8] = 2;
1647 m->profile[9] = 6;
1648 m->profile[10] = 7;
1649 m->profile[11] = 70;
1650 m->profile[12] = 0x45;
1651 m->profile[13] = 4;
1652 m->profile[14] = ISDN_PROTO_L2_X75I;
1653 m->profile[15] = ISDN_PROTO_L3_TRANS;
1654 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1655 m->profile[17] = ISDN_MODEM_WINSIZE;
1656 m->profile[18] = 4;
1657 m->profile[19] = 0;
1658 m->profile[20] = 0;
1659 m->profile[23] = 0;
1660 m->pmsn[0] = '\0';
1661 m->plmsn[0] = '\0';
1662}
1663
1664#ifdef CONFIG_ISDN_AUDIO
1665static void
475be4d8 1666isdn_tty_modem_reset_vpar(atemu *m)
1da177e4
LT		 1667{
1668 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1669 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1670 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1671 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1672 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1673 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1674}
1675#endif
1676
1677#ifdef CONFIG_ISDN_TTY_FAX
1678static void
475be4d8 1679isdn_tty_modem_reset_faxpar(modem_info *info)
1da177e4
LT		 1680{
1681 T30_s *f = info->fax;
1682
1683 f->code = 0;
1684 f->phase = ISDN_FAX_PHASE_IDLE;
1685 f->direction = 0;
1686 f->resolution = 1; /* fine */
1687 f->rate = 5; /* 14400 bit/s */
1688 f->width = 0;
1689 f->length = 0;
1690 f->compression = 0;
1691 f->ecm = 0;
1692 f->binary = 0;
1693 f->scantime = 0;
1694 memset(&f->id[0], 32, FAXIDLEN - 1);
1695 f->id[FAXIDLEN - 1] = 0;
1696 f->badlin = 0;
1697 f->badmul = 0;
1698 f->bor = 0;
1699 f->nbc = 0;
1700 f->cq = 0;
1701 f->cr = 0;
1702 f->ctcrty = 0;
1703 f->minsp = 0;
1704 f->phcto = 30;
1705 f->rel = 0;
1706 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1707 f->pollid[FAXIDLEN - 1] = 0;
1708}
1709#endif
1710
1711static void
475be4d8 1712isdn_tty_modem_reset_regs(modem_info *info, int force)
1da177e4
LT		 1713{
1714 atemu *m = &info->emu;
1715 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1716 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1717 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1718 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1719 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1720 }
1721#ifdef CONFIG_ISDN_AUDIO
1722 isdn_tty_modem_reset_vpar(m);
1723#endif
1724#ifdef CONFIG_ISDN_TTY_FAX
1725 isdn_tty_modem_reset_faxpar(info);
1726#endif
1727 m->mdmcmdl = 0;
1728}
1729
1730static void
475be4d8 1731modem_write_profile(atemu *m)
1da177e4
LT		 1732{
1733 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1734 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1735 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1736 if (dev->profd)
1737 send_sig(SIGIO, dev->profd, 1);
1738}
1739
b68e31d0 1740static const struct tty_operations modem_ops = {
475be4d8 1741 .open = isdn_tty_open,
1da177e4
LT		 1742 .close = isdn_tty_close,
1743 .write = isdn_tty_write,
1744 .flush_chars = isdn_tty_flush_chars,
1745 .write_room = isdn_tty_write_room,
1746 .chars_in_buffer = isdn_tty_chars_in_buffer,
1747 .flush_buffer = isdn_tty_flush_buffer,
1748 .ioctl = isdn_tty_ioctl,
1749 .throttle = isdn_tty_throttle,
1750 .unthrottle = isdn_tty_unthrottle,
1751 .set_termios = isdn_tty_set_termios,
1752 .hangup = isdn_tty_hangup,
1753 .tiocmget = isdn_tty_tiocmget,
1754 .tiocmset = isdn_tty_tiocmset,
1755};
1756
042b9e7c
JS		 1757static int isdn_tty_carrier_raised(struct tty_port *port)
1758{
1759 modem_info *info = container_of(port, modem_info, port);
1760 return info->msr & UART_MSR_DCD;
1761}
1762
1763static const struct tty_port_operations isdn_tty_port_ops = {
1764 .carrier_raised = isdn_tty_carrier_raised,
1765};
1766
1da177e4
LT		 1767int
1768isdn_tty_modem_init(void)
1769{
1770 isdn_modem_t *m;
1771 int i, retval;
1772 modem_info *info;
1773
1774 m = &dev->mdm;
1775 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1776 if (!m->tty_modem)
1777 return -ENOMEM;
1778 m->tty_modem->name = "ttyI";
1da177e4
LT		 1779 m->tty_modem->major = ISDN_TTY_MAJOR;
1780 m->tty_modem->minor_start = 0;
1781 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1782 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1783 m->tty_modem->init_termios = tty_std_termios;
1784 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
331b8319 1785 m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1da177e4
LT		 1786 m->tty_modem->driver_name = "isdn_tty";
1787 tty_set_operations(m->tty_modem, &modem_ops);
1788 retval = tty_register_driver(m->tty_modem);
1789 if (retval) {
1790 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1791 goto err;
1792 }
1793 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1794 info = &m->info[i];
1795#ifdef CONFIG_ISDN_TTY_FAX
1796 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1797 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1798 retval = -ENOMEM;
1799 goto err_unregister;
1800 }
1da177e4 1801#endif
48decc1c 1802 tty_port_init(&info->port);
042b9e7c 1803 info->port.ops = &isdn_tty_port_ops;
1da177e4 1804 spin_lock_init(&info->readlock);
1da177e4
LT		 1805 sprintf(info->last_cause, "0000");
1806 sprintf(info->last_num, "none");
1807 info->last_dir = 0;
1808 info->last_lhup = 1;
1809 info->last_l2 = -1;
1810 info->last_si = 0;
1811 isdn_tty_reset_profile(&info->emu);
1812 isdn_tty_modem_reset_regs(info, 1);
1813 info->magic = ISDN_ASYNC_MAGIC;
1814 info->line = i;
1da177e4 1815 info->x_char = 0;
1da177e4
LT		 1816 info->isdn_driver = -1;
1817 info->isdn_channel = -1;
1818 info->drv_index = -1;
1819 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1820 init_timer(&info->nc_timer);
1821 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1822 info->nc_timer.data = (unsigned long) info;
1823 skb_queue_head_init(&info->xmit_queue);
1824#ifdef CONFIG_ISDN_AUDIO
1825 skb_queue_head_init(&info->dtmf_queue);
1826#endif
82e46b31
JS		 1827 info->port.xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5,
1828 GFP_KERNEL);
1829 if (!info->port.xmit_buf) {
1da177e4
LT		 1830 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1831 retval = -ENOMEM;
1832 goto err_unregister;
1833 }
1834 /* Make room for T.70 header */
82e46b31 1835 info->port.xmit_buf += 4;
1da177e4
LT		 1836 }
1837 return 0;
1838err_unregister:
1839 for (i--; i >= 0; i--) {
1840 info = &m->info[i];
1841#ifdef CONFIG_ISDN_TTY_FAX
1842 kfree(info->fax);
1843#endif
82e46b31 1844 kfree(info->port.xmit_buf - 4);
1da177e4
LT		 1845 }
1846 tty_unregister_driver(m->tty_modem);
475be4d8 1847err:
1da177e4
LT		 1848 put_tty_driver(m->tty_modem);
1849 m->tty_modem = NULL;
1850 return retval;
1851}
1852
1853void
1854isdn_tty_exit(void)
1855{
1856 modem_info *info;
1857 int i;
1858
1859 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1860 info = &dev->mdm.info[i];
1861 isdn_tty_cleanup_xmit(info);
1862#ifdef CONFIG_ISDN_TTY_FAX
1863 kfree(info->fax);
1864#endif
82e46b31 1865 kfree(info->port.xmit_buf - 4);
1da177e4
LT		 1866 }
1867 tty_unregister_driver(dev->mdm.tty_modem);
1868 put_tty_driver(dev->mdm.tty_modem);
1869 dev->mdm.tty_modem = NULL;
1870}
1871
1872
1873/*
1874 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1875 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1876 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1877 */
1878
1879static int
1880isdn_tty_match_icall(char *cid, atemu *emu, int di)
1881{
1882#ifdef ISDN_DEBUG_MODEM_ICALL
1883 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1884 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1885 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1886#endif
1887 if (strlen(emu->lmsn)) {
1888 char *p = emu->lmsn;
1889 char *q;
1890 int tmp;
1891 int ret = 0;
1892
1893 while (1) {
1894 if ((q = strchr(p, ';')))
1895 *q = '\0';
1896 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
1897 ret = tmp;
1898#ifdef ISDN_DEBUG_MODEM_ICALL
1899 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
1900 p, isdn_map_eaz2msn(emu->msn, di), tmp);
1901#endif
1902 if (q) {
1903 *q = ';';
1904 p = q;
1905 p++;
1906 }
1907 if (!tmp)
1908 return 0;
1909 if (!q)
1910 break;
1911 }
1912 return ret;
1913 } else {
1914 int tmp;
1915 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
1916#ifdef ISDN_DEBUG_MODEM_ICALL
475be4d8
JP		 1917 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
1918 isdn_map_eaz2msn(emu->msn, di), tmp);
1da177e4
LT		 1919#endif
1920 return tmp;
1921 }
1922}
1923
1924/*
1925 * An incoming call-request has arrived.
1926 * Search the tty-devices for an appropriate device and bind
1927 * it to the ISDN-Channel.
1928 * Return:
1929 *
1930 * 0 = No matching device found.
1931 * 1 = A matching device found.
1932 * 3 = No match found, but eventually would match, if
1933 * CID is longer.
1934 */
1935int
1936isdn_tty_find_icall(int di, int ch, setup_parm *setup)
1937{
1938 char *eaz;
1939 int i;
1940 int wret;
1941 int idx;
1942 int si1;
1943 int si2;
1944 char *nr;
1945 ulong flags;
1946
1947 if (!setup->phone[0]) {
1948 nr = "0";
1949 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
1950 } else
1951 nr = setup->phone;
1952 si1 = (int) setup->si1;
1953 si2 = (int) setup->si2;
1954 if (!setup->eazmsn[0]) {
1955 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
1956 eaz = "0";
1957 } else
1958 eaz = setup->eazmsn;
1959#ifdef ISDN_DEBUG_MODEM_ICALL
1960 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
1961#endif
1962 wret = 0;
1963 spin_lock_irqsave(&dev->lock, flags);
1964 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1965 modem_info *info = &dev->mdm.info[i];
1966
1b05f030 1967 if (info->port.count == 0)
475be4d8 1968 continue;
1da177e4
LT		 1969 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
1970 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
1971 idx = isdn_dc2minor(di, ch);
1972#ifdef ISDN_DEBUG_MODEM_ICALL
1973 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
1974 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
48decc1c
JS		 1975 info->port.flags, info->isdn_driver,
1976 info->isdn_channel, dev->usage[idx]);
1da177e4
LT		 1977#endif
1978 if (
1979#ifndef FIX_FILE_TRANSFER
48decc1c 1980 (info->port.flags & ASYNC_NORMAL_ACTIVE) &&
1da177e4
LT		 1981#endif
1982 (info->isdn_driver == -1) &&
1983 (info->isdn_channel == -1) &&
1984 (USG_NONE(dev->usage[idx]))) {
1985 int matchret;
1986
1987 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
1988 wret = matchret;
1989 if (!matchret) { /* EAZ is matching */
1990 info->isdn_driver = di;
1991 info->isdn_channel = ch;
1992 info->drv_index = idx;
1993 dev->m_idx[idx] = info->line;
1994 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
475be4d8 1995 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
1da177e4
LT		 1996 strcpy(dev->num[idx], nr);
1997 strcpy(info->emu.cpn, eaz);
1998 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
1999 info->emu.mdmreg[REG_PLAN] = setup->plan;
2000 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2001 isdn_info_update();
2002 spin_unlock_irqrestore(&dev->lock, flags);
2003 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2004 info->line);
2005 info->msr |= UART_MSR_RI;
2006 isdn_tty_modem_result(RESULT_RING, info);
2007 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2008 return 1;
2009 }
2010 }
2011 }
2012 }
2013 spin_unlock_irqrestore(&dev->lock, flags);
2014 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
475be4d8
JP		 2015 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2)) ? "rejected" : "ignored");
2016 return (wret == 2) ? 3 : 0;
1da177e4
LT		 2017}
2018
48decc1c 2019#define TTY_IS_ACTIVE(info) (info->port.flags & ASYNC_NORMAL_ACTIVE)
1da177e4
LT		 2020
2021int
2022isdn_tty_stat_callback(int i, isdn_ctrl *c)
2023{
2024 int mi;
2025 modem_info *info;
2026 char *e;
2027
2028 if (i < 0)
2029 return 0;
2030 if ((mi = dev->m_idx[i]) >= 0) {
2031 info = &dev->mdm.info[mi];
2032 switch (c->command) {
475be4d8
JP		 2033 case ISDN_STAT_CINF:
2034 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2035 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2036 if (e == (char *)c->parm.num)
2037 info->emu.charge = 0;
2038
2039 break;
2040 case ISDN_STAT_BSENT:
1da177e4 2041#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2042 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
1da177e4 2043#endif
475be4d8
JP		 2044 if ((info->isdn_driver == c->driver) &&
2045 (info->isdn_channel == c->arg)) {
2046 info->msr |= UART_MSR_CTS;
2047 if (info->send_outstanding)
2048 if (!(--info->send_outstanding))
2049 info->lsr |= UART_LSR_TEMT;
2050 isdn_tty_tint(info);
1da177e4 2051 return 1;
475be4d8
JP		 2052 }
2053 break;
2054 case ISDN_STAT_CAUSE:
1da177e4 2055#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2056 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2057#endif
2058 /* Signal cause to tty-device */
2059 strncpy(info->last_cause, c->parm.num, 5);
2060 return 1;
2061 case ISDN_STAT_DISPLAY:
1da177e4 2062#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2063 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
1da177e4 2064#endif
475be4d8
JP		 2065 /* Signal display to tty-device */
2066 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2067 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2068 isdn_tty_at_cout("\r\n", info);
2069 isdn_tty_at_cout("DISPLAY: ", info);
2070 isdn_tty_at_cout(c->parm.display, info);
2071 isdn_tty_at_cout("\r\n", info);
2072 }
2073 return 1;
2074 case ISDN_STAT_DCONN:
2075#ifdef ISDN_TTY_STAT_DEBUG
2076 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2077#endif
2078 if (TTY_IS_ACTIVE(info)) {
2079 if (info->dialing == 1) {
2080 info->dialing = 2;
2081 return 1;
1da177e4 2082 }
475be4d8
JP		 2083 }
2084 break;
2085 case ISDN_STAT_DHUP:
1da177e4 2086#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2087 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
1da177e4 2088#endif
475be4d8
JP		 2089 if (TTY_IS_ACTIVE(info)) {
2090 if (info->dialing == 1)
2091 isdn_tty_modem_result(RESULT_BUSY, info);
2092 if (info->dialing > 1)
2093 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2094 info->dialing = 0;
1da177e4 2095#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2096 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
1da177e4 2097#endif
475be4d8
JP		 2098 isdn_tty_modem_hup(info, 0);
2099 return 1;
2100 }
2101 break;
2102 case ISDN_STAT_BCONN:
1da177e4 2103#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2104 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2105#endif
2106 /* Wake up any processes waiting
2107 * for incoming call of this device when
2108 * DCD follow the state of incoming carrier
2109 */
1b05f030 2110 if (info->port.blocked_open &&
475be4d8 2111 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
c6e92b63 2112 wake_up_interruptible(&info->port.open_wait);
475be4d8 2113 }
1da177e4 2114
475be4d8
JP		 2115 /* Schedule CONNECT-Message to any tty
2116 * waiting for it and
2117 * set DCD-bit of its modem-status.
2118 */
2119 if (TTY_IS_ACTIVE(info) ||
1b05f030
JS		 2120 (info->port.blocked_open &&
2121 (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
475be4d8
JP		 2122 info->msr |= UART_MSR_DCD;
2123 info->emu.charge = 0;
2124 if (info->dialing & 0xf)
2125 info->last_dir = 1;
2126 else
2127 info->last_dir = 0;
2128 info->dialing = 0;
2129 info->rcvsched = 1;
2130 if (USG_MODEM(dev->usage[i])) {
2131 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2132 strcpy(info->emu.connmsg, c->parm.num);
2133 isdn_tty_modem_result(RESULT_CONNECT, info);
2134 } else
2135 isdn_tty_modem_result(RESULT_CONNECT64000, info);
1da177e4 2136 }
475be4d8
JP		 2137 if (USG_VOICE(dev->usage[i]))
2138 isdn_tty_modem_result(RESULT_VCON, info);
2139 return 1;
2140 }
2141 break;
2142 case ISDN_STAT_BHUP:
1da177e4 2143#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2144 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
1da177e4 2145#endif
475be4d8 2146 if (TTY_IS_ACTIVE(info)) {
1da177e4 2147#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2148 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
1da177e4 2149#endif
475be4d8
JP		 2150 isdn_tty_modem_hup(info, 0);
2151 return 1;
2152 }
2153 break;
2154 case ISDN_STAT_NODCH:
1da177e4 2155#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2156 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2157#endif
2158 if (TTY_IS_ACTIVE(info)) {
2159 if (info->dialing) {
2160 info->dialing = 0;
2161 info->last_l2 = -1;
2162 info->last_si = 0;
2163 sprintf(info->last_cause, "0000");
2164 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
1da177e4 2165 }
475be4d8
JP		 2166 isdn_tty_modem_hup(info, 0);
2167 return 1;
2168 }
2169 break;
2170 case ISDN_STAT_UNLOAD:
1da177e4 2171#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2172 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
1da177e4 2173#endif
475be4d8
JP		 2174 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2175 info = &dev->mdm.info[i];
2176 if (info->isdn_driver == c->driver) {
2177 if (info->online)
2178 isdn_tty_modem_hup(info, 1);
1da177e4 2179 }
475be4d8
JP		 2180 }
2181 return 1;
1da177e4 2182#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 2183 case ISDN_STAT_FAXIND:
2184 if (TTY_IS_ACTIVE(info)) {
2185 isdn_tty_fax_command(info, c);
2186 }
2187 break;
1da177e4
LT		 2188#endif
2189#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 2190 case ISDN_STAT_AUDIO:
2191 if (TTY_IS_ACTIVE(info)) {
2192 switch (c->parm.num[0]) {
2193 case ISDN_AUDIO_DTMF:
2194 if (info->vonline) {
2195 isdn_audio_put_dle_code(info,
1da177e4 2196 c->parm.num[1]);
1da177e4 2197 }
475be4d8 2198 break;
1da177e4 2199 }
475be4d8
JP		 2200 }
2201 break;
1da177e4
LT		 2202#endif
2203 }
2204 }
2205 return 0;
2206}
2207
2208/*********************************************************************
2209 Modem-Emulator-Routines
475be4d8 2210*********************************************************************/
1da177e4 2211
475be4d8 2212#define cmdchar(c) ((c >= ' ') && (c <= 0x7f))
1da177e4
LT		 2213
2214/*
2215 * Put a message from the AT-emulator into receive-buffer of tty,
2216 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2217 */
2218void
475be4d8 2219isdn_tty_at_cout(char *msg, modem_info *info)
1da177e4
LT		 2220{
2221 struct tty_struct *tty;
2222 atemu *m = &info->emu;
2223 char *p;
2224 char c;
2225 u_long flags;
2226 struct sk_buff *skb = NULL;
2227 char *sp = NULL;
1f4d4a80 2228 int l;
1da177e4
LT		 2229
2230 if (!msg) {
2231 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2232 return;
2233 }
1f4d4a80
AB		 2234
2235 l = strlen(msg);
2236
1da177e4 2237 spin_lock_irqsave(&info->readlock, flags);
ba43294d 2238 tty = info->port.tty;
48decc1c 2239 if ((info->port.flags & ASYNC_CLOSING) || (!tty)) {
1da177e4
LT		 2240 spin_unlock_irqrestore(&info->readlock, flags);
2241 return;
2242 }
2243
33f0f88f
AC		 2244 /* use queue instead of direct, if online and */
2245 /* data is in queue or buffer is full */
61b9a26a 2246 if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
475be4d8 2247 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
33f0f88f 2248 skb = alloc_skb(l, GFP_ATOMIC);
1da177e4
LT		 2249 if (!skb) {
2250 spin_unlock_irqrestore(&info->readlock, flags);
2251 return;
2252 }
33f0f88f 2253 sp = skb_put(skb, l);
1da177e4
LT		 2254#ifdef CONFIG_ISDN_AUDIO
2255 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2256 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2257#endif
2258 }
2259
2260 for (p = msg; *p; p++) {
2261 switch (*p) {
475be4d8
JP		 2262 case '\r':
2263 c = m->mdmreg[REG_CR];
2264 break;
2265 case '\n':
2266 c = m->mdmreg[REG_LF];
2267 break;
2268 case '\b':
2269 c = m->mdmreg[REG_BS];
2270 break;
2271 default:
2272 c = *p;
1da177e4
LT		 2273 }
2274 if (skb) {
2275 *sp++ = c;
2276 } else {
475be4d8 2277 if (tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
1da177e4 2278 break;
1da177e4
LT		 2279 }
2280 }
2281 if (skb) {
2282 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2283 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2284 spin_unlock_irqrestore(&info->readlock, flags);
2285 /* Schedule dequeuing */
33f0f88f 2286 if (dev->modempoll && info->rcvsched)
1da177e4
LT		 2287 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2288
2289 } else {
2290 spin_unlock_irqrestore(&info->readlock, flags);
33f0f88f 2291 tty_flip_buffer_push(tty);
1da177e4
LT		 2292 }
2293}
2294
2295/*
2296 * Perform ATH Hangup
2297 */
2298static void
475be4d8 2299isdn_tty_on_hook(modem_info *info)
1da177e4
LT		 2300{
2301 if (info->isdn_channel >= 0) {
2302#ifdef ISDN_DEBUG_MODEM_HUP
2303 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2304#endif
2305 isdn_tty_modem_hup(info, 1);
2306 }
2307}
2308
2309static void
2310isdn_tty_off_hook(void)
2311{
2312 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2313}
2314
475be4d8
JP		 2315#define PLUSWAIT1 (HZ / 2) /* 0.5 sec. */
2316#define PLUSWAIT2 (HZ * 3 / 2) /* 1.5 sec */
1da177e4
LT		 2317
2318/*
2319 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2320 * isdn_tty_modem_escape() if sequence found.
2321 *
2322 * Parameters:
2323 * p pointer to databuffer
2324 * plus escape-character
2325 * count length of buffer
2326 * pluscount count of valid escape-characters so far
2327 * lastplus timestamp of last character
2328 */
2329static void
475be4d8 2330isdn_tty_check_esc(const u_char *p, u_char plus, int count, int *pluscount,
1da177e4
LT		 2331 u_long *lastplus)
2332{
2333 if (plus > 127)
2334 return;
2335 if (count > 3) {
2336 p += count - 3;
2337 count = 3;
2338 *pluscount = 0;
2339 }
2340 while (count > 0) {
2341 if (*(p++) == plus) {
2342 if ((*pluscount)++) {
2343 /* Time since last '+' > 0.5 sec. ? */
2344 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2345 *pluscount = 1;
2346 } else {
2347 /* Time since last non-'+' < 1.5 sec. ? */
2348 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2349 *pluscount = 0;
2350 }
2351 if ((*pluscount == 3) && (count == 1))
2352 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2353 if (*pluscount > 3)
2354 *pluscount = 1;
2355 } else
2356 *pluscount = 0;
2357 *lastplus = jiffies;
2358 count--;
2359 }
2360}
2361
2362/*
2363 * Return result of AT-emulator to tty-receive-buffer, depending on
2364 * modem-register 12, bit 0 and 1.
2365 * For CONNECT-messages also switch to online-mode.
2366 * For RING-message handle auto-ATA if register 0 != 0
2367 */
2368
2369static void
475be4d8 2370isdn_tty_modem_result(int code, modem_info *info)
1da177e4
LT		 2371{
2372 atemu *m = &info->emu;
2373 static char *msg[] =
475be4d8
JP		 2374 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2375 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2376 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2377 char s[ISDN_MSNLEN + 10];
1da177e4
LT		 2378
2379 switch (code) {
475be4d8
JP		 2380 case RESULT_RING:
2381 m->mdmreg[REG_RINGCNT]++;
2382 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2383 /* Automatically accept incoming call */
2384 isdn_tty_cmd_ATA(info);
2385 break;
2386 case RESULT_NO_CARRIER:
1da177e4 2387#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2388 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
48decc1c 2389 (info->port.flags & ASYNC_CLOSING),
ba43294d 2390 (!info->port.tty));
475be4d8
JP		 2391#endif
2392 m->mdmreg[REG_RINGCNT] = 0;
2393 del_timer(&info->nc_timer);
2394 info->ncarrier = 0;
ba43294d 2395 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
475be4d8 2396 return;
6776a2f0 2397
1da177e4 2398#ifdef CONFIG_ISDN_AUDIO
475be4d8 2399 if (info->vonline & 1) {
1da177e4 2400#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2401 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2402 info->line);
1da177e4 2403#endif
475be4d8
JP		 2404 /* voice-recording, add DLE-ETX */
2405 isdn_tty_at_cout("\020\003", info);
2406 }
2407 if (info->vonline & 2) {
1da177e4 2408#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2409 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2410 info->line);
1da177e4 2411#endif
475be4d8
JP		 2412 /* voice-playing, add DLE-DC4 */
2413 isdn_tty_at_cout("\020\024", info);
2414 }
1da177e4 2415#endif
475be4d8
JP		 2416 break;
2417 case RESULT_CONNECT:
2418 case RESULT_CONNECT64000:
2419 sprintf(info->last_cause, "0000");
2420 if (!info->online)
2421 info->online = 2;
2422 break;
2423 case RESULT_VCON:
1da177e4 2424#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2425 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2426 info->line);
1da177e4 2427#endif
475be4d8
JP		 2428 sprintf(info->last_cause, "0000");
2429 if (!info->online)
2430 info->online = 1;
2431 break;
2432 } /* switch (code) */
1da177e4
LT		 2433
2434 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2435 /* Show results */
2436 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2437 /* Show numeric results only */
2438 sprintf(s, "\r\n%d\r\n", code);
2439 isdn_tty_at_cout(s, info);
2440 } else {
2441 if (code == RESULT_RING) {
475be4d8
JP		 2442 /* return if "show RUNG" and ringcounter>1 */
2443 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
1da177e4 2444 (m->mdmreg[REG_RINGCNT] > 1))
475be4d8
JP		 2445 return;
2446 /* print CID, _before_ _every_ ring */
2447 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2448 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2449 isdn_tty_at_cout(dev->num[info->drv_index], info);
2450 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2451 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2452 isdn_tty_at_cout(info->emu.cpn, info);
2453 }
2454 }
1da177e4
LT		 2455 }
2456 isdn_tty_at_cout("\r\n", info);
2457 isdn_tty_at_cout(msg[code], info);
2458 switch (code) {
475be4d8
JP		 2459 case RESULT_CONNECT:
2460 switch (m->mdmreg[REG_L2PROT]) {
2461 case ISDN_PROTO_L2_MODEM:
2462 isdn_tty_at_cout(" ", info);
2463 isdn_tty_at_cout(m->connmsg, info);
1da177e4 2464 break;
475be4d8
JP		 2465 }
2466 break;
2467 case RESULT_RING:
2468 /* Append CPN, if enabled */
2469 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2470 sprintf(s, "/%s", m->cpn);
2471 isdn_tty_at_cout(s, info);
2472 }
2473 /* Print CID only once, _after_ 1st RING */
2474 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2475 (m->mdmreg[REG_RINGCNT] == 1)) {
2476 isdn_tty_at_cout("\r\n", info);
2477 isdn_tty_at_cout("CALLER NUMBER: ", info);
2478 isdn_tty_at_cout(dev->num[info->drv_index], info);
2479 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2480 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2481 isdn_tty_at_cout(info->emu.cpn, info);
1da177e4 2482 }
475be4d8
JP		 2483 }
2484 break;
2485 case RESULT_NO_CARRIER:
2486 case RESULT_NO_DIALTONE:
2487 case RESULT_BUSY:
2488 case RESULT_NO_ANSWER:
2489 m->mdmreg[REG_RINGCNT] = 0;
2490 /* Append Cause-Message if enabled */
2491 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2492 sprintf(s, "/%s", info->last_cause);
2493 isdn_tty_at_cout(s, info);
2494 }
2495 break;
2496 case RESULT_CONNECT64000:
2497 /* Append Protocol to CONNECT message */
2498 switch (m->mdmreg[REG_L2PROT]) {
2499 case ISDN_PROTO_L2_X75I:
2500 case ISDN_PROTO_L2_X75UI:
2501 case ISDN_PROTO_L2_X75BUI:
2502 isdn_tty_at_cout("/X.75", info);
1da177e4 2503 break;
475be4d8
JP		 2504 case ISDN_PROTO_L2_HDLC:
2505 isdn_tty_at_cout("/HDLC", info);
1da177e4 2506 break;
475be4d8
JP		 2507 case ISDN_PROTO_L2_V11096:
2508 isdn_tty_at_cout("/V110/9600", info);
2509 break;
2510 case ISDN_PROTO_L2_V11019:
2511 isdn_tty_at_cout("/V110/19200", info);
2512 break;
2513 case ISDN_PROTO_L2_V11038:
2514 isdn_tty_at_cout("/V110/38400", info);
1da177e4 2515 break;
475be4d8
JP		 2516 }
2517 if (m->mdmreg[REG_T70] & BIT_T70) {
2518 isdn_tty_at_cout("/T.70", info);
2519 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2520 isdn_tty_at_cout("+", info);
2521 }
2522 break;
1da177e4
LT		 2523 }
2524 isdn_tty_at_cout("\r\n", info);
2525 }
2526 }
2527 if (code == RESULT_NO_CARRIER) {
ba43294d 2528 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
1da177e4 2529 return;
6776a2f0 2530
48decc1c 2531 if (info->port.flags & ASYNC_CHECK_CD)
ba43294d 2532 tty_hangup(info->port.tty);
1da177e4
LT		 2533 }
2534}
2535
2536
2537/*
2538 * Display a modem-register-value.
2539 */
2540static void
475be4d8 2541isdn_tty_show_profile(int ridx, modem_info *info)
1da177e4
LT		 2542{
2543 char v[6];
2544
2545 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2546 isdn_tty_at_cout(v, info);
2547}
2548
2549/*
2550 * Get MSN-string from char-pointer, set pointer to end of number
2551 */
2552static void
2553isdn_tty_get_msnstr(char *n, char **p)
2554{
2555 int limit = ISDN_MSNLEN - 1;
2556
2557 while (((*p[0] >= '0' && *p[0] <= '9') ||
2558 /* Why a comma ??? */
2559 (*p[0] == ',') || (*p[0] == ':')) &&
475be4d8 2560 (limit--))
1da177e4
LT		 2561 *n++ = *p[0]++;
2562 *n = '\0';
2563}
2564
2565/*
2566 * Get phone-number from modem-commandbuffer
2567 */
2568static void
475be4d8 2569isdn_tty_getdial(char *p, char *q, int cnt)
1da177e4
LT		 2570{
2571 int first = 1;
2572 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
475be4d8 2573 buffer overflow */
1da177e4 2574
475be4d8 2575 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt > 0) {
1da177e4 2576 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
924ad158 2577 ((*p == 'R') && first) ||
1da177e4
LT		 2578 (*p == '*') || (*p == '#')) {
2579 *q++ = *p;
2580 limit--;
2581 }
475be4d8 2582 if (!limit)
1da177e4
LT		 2583 break;
2584 p++;
2585 first = 0;
2586 }
2587 *q = 0;
2588}
2589
2590#define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2591#define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2592
2593static void
475be4d8 2594isdn_tty_report(modem_info *info)
1da177e4
LT		 2595{
2596 atemu *m = &info->emu;
2597 char s[80];
2598
2599 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2600 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2601 isdn_tty_at_cout(s, info);
2602 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2603 isdn_tty_at_cout(s, info);
2604 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2605 switch (info->last_l2) {
475be4d8
JP		 2606 case ISDN_PROTO_L2_X75I:
2607 isdn_tty_at_cout("X.75i", info);
2608 break;
2609 case ISDN_PROTO_L2_X75UI:
2610 isdn_tty_at_cout("X.75ui", info);
2611 break;
2612 case ISDN_PROTO_L2_X75BUI:
2613 isdn_tty_at_cout("X.75bui", info);
2614 break;
2615 case ISDN_PROTO_L2_HDLC:
2616 isdn_tty_at_cout("HDLC", info);
2617 break;
2618 case ISDN_PROTO_L2_V11096:
2619 isdn_tty_at_cout("V.110 9600 Baud", info);
2620 break;
2621 case ISDN_PROTO_L2_V11019:
2622 isdn_tty_at_cout("V.110 19200 Baud", info);
2623 break;
2624 case ISDN_PROTO_L2_V11038:
2625 isdn_tty_at_cout("V.110 38400 Baud", info);
2626 break;
2627 case ISDN_PROTO_L2_TRANS:
2628 isdn_tty_at_cout("transparent", info);
2629 break;
2630 case ISDN_PROTO_L2_MODEM:
2631 isdn_tty_at_cout("modem", info);
2632 break;
2633 case ISDN_PROTO_L2_FAX:
2634 isdn_tty_at_cout("fax", info);
2635 break;
2636 default:
2637 isdn_tty_at_cout("unknown", info);
2638 break;
1da177e4
LT		 2639 }
2640 if (m->mdmreg[REG_T70] & BIT_T70) {
2641 isdn_tty_at_cout("/T.70", info);
2642 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2643 isdn_tty_at_cout("+", info);
2644 }
2645 isdn_tty_at_cout("\r\n", info);
2646 isdn_tty_at_cout(" Service: ", info);
2647 switch (info->last_si) {
475be4d8
JP		 2648 case 1:
2649 isdn_tty_at_cout("audio\r\n", info);
2650 break;
2651 case 5:
2652 isdn_tty_at_cout("btx\r\n", info);
2653 break;
2654 case 7:
2655 isdn_tty_at_cout("data\r\n", info);
2656 break;
2657 default:
2658 sprintf(s, "%d\r\n", info->last_si);
2659 isdn_tty_at_cout(s, info);
2660 break;
1da177e4
LT		 2661 }
2662 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2663 isdn_tty_at_cout(s, info);
2664 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2665 isdn_tty_at_cout(s, info);
2666}
2667
2668/*
2669 * Parse AT&.. commands.
2670 */
2671static int
475be4d8 2672isdn_tty_cmd_ATand(char **p, modem_info *info)
1da177e4
LT		 2673{
2674 atemu *m = &info->emu;
2675 int i;
2676 char rb[100];
2677
2678#define MAXRB (sizeof(rb) - 1)
2679
2680 switch (*p[0]) {
475be4d8
JP		 2681 case 'B':
2682 /* &B - Set Buffersize */
2683 p[0]++;
2684 i = isdn_getnum(p);
2685 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2686 PARSE_ERROR1;
1da177e4 2687#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 2688 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2689 PARSE_ERROR1;
1da177e4 2690#endif
475be4d8
JP		 2691 m->mdmreg[REG_PSIZE] = i / 16;
2692 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2693 switch (m->mdmreg[REG_L2PROT]) {
2694 case ISDN_PROTO_L2_V11096:
2695 case ISDN_PROTO_L2_V11019:
2696 case ISDN_PROTO_L2_V11038:
2697 info->xmit_size /= 10;
2698 }
2699 break;
2700 case 'C':
2701 /* &C - DCD Status */
2702 p[0]++;
2703 switch (isdn_getnum(p)) {
2704 case 0:
2705 m->mdmreg[REG_DCD] &= ~BIT_DCD;
1da177e4 2706 break;
475be4d8
JP		 2707 case 1:
2708 m->mdmreg[REG_DCD] |= BIT_DCD;
1da177e4 2709 break;
475be4d8
JP		 2710 default:
2711 PARSE_ERROR1
2712 }
2713 break;
2714 case 'D':
2715 /* &D - Set DTR-Low-behavior */
2716 p[0]++;
2717 switch (isdn_getnum(p)) {
2718 case 0:
2719 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2720 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
1da177e4 2721 break;
475be4d8
JP		 2722 case 2:
2723 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2724 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2725 break;
2726 case 3:
2727 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2728 m->mdmreg[REG_DTRR] |= BIT_DTRR;
1da177e4 2729 break;
475be4d8
JP		 2730 default:
2731 PARSE_ERROR1
2732 }
2733 break;
2734 case 'E':
2735 /* &E -Set EAZ/MSN */
2736 p[0]++;
2737 isdn_tty_get_msnstr(m->msn, p);
2738 break;
2739 case 'F':
2740 /* &F -Set Factory-Defaults */
2741 p[0]++;
2742 if (info->msr & UART_MSR_DCD)
2743 PARSE_ERROR1;
2744 isdn_tty_reset_profile(m);
2745 isdn_tty_modem_reset_regs(info, 1);
2746 break;
1da177e4 2747#ifdef DUMMY_HAYES_AT
475be4d8
JP		 2748 case 'K':
2749 /* only for be compilant with common scripts */
2750 /* &K Flowcontrol - no function */
2751 p[0]++;
2752 isdn_getnum(p);
2753 break;
2754#endif
2755 case 'L':
2756 /* &L -Set Numbers to listen on */
2757 p[0]++;
2758 i = 0;
2759 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
2760 (i < ISDN_LMSNLEN - 1))
2761 m->lmsn[i++] = *p[0]++;
2762 m->lmsn[i] = '\0';
2763 break;
2764 case 'R':
2765 /* &R - Set V.110 bitrate adaption */
2766 p[0]++;
2767 i = isdn_getnum(p);
2768 switch (i) {
2769 case 0:
2770 /* Switch off V.110, back to X.75 */
2771 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2772 m->mdmreg[REG_SI2] = 0;
2773 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1da177e4 2774 break;
475be4d8
JP		 2775 case 9600:
2776 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2777 m->mdmreg[REG_SI2] = 197;
2778 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2779 break;
475be4d8
JP		 2780 case 19200:
2781 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2782 m->mdmreg[REG_SI2] = 199;
2783 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2784 break;
475be4d8
JP		 2785 case 38400:
2786 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2787 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2788 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2789 break;
475be4d8
JP		 2790 default:
2791 PARSE_ERROR1;
2792 }
2793 /* Switch off T.70 */
2794 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2795 /* Set Service 7 */
2796 m->mdmreg[REG_SI1] |= 4;
2797 break;
2798 case 'S':
2799 /* &S - Set Windowsize */
2800 p[0]++;
2801 i = isdn_getnum(p);
2802 if ((i > 0) && (i < 9))
2803 m->mdmreg[REG_WSIZE] = i;
2804 else
2805 PARSE_ERROR1;
2806 break;
2807 case 'V':
2808 /* &V - Show registers */
2809 p[0]++;
2810 isdn_tty_at_cout("\r\n", info);
2811 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2812 sprintf(rb, "S%02d=%03d%s", i,
2813 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2814 isdn_tty_at_cout(rb, info);
2815 }
2816 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2817 strlen(m->msn) ? m->msn : "None");
2818 isdn_tty_at_cout(rb, info);
2819 if (strlen(m->lmsn)) {
2820 isdn_tty_at_cout("\r\nListen: ", info);
2821 isdn_tty_at_cout(m->lmsn, info);
2822 isdn_tty_at_cout("\r\n", info);
2823 }
2824 break;
2825 case 'W':
2826 /* &W - Write Profile */
2827 p[0]++;
2828 switch (*p[0]) {
2829 case '0':
1da177e4 2830 p[0]++;
475be4d8 2831 modem_write_profile(m);
1da177e4 2832 break;
475be4d8
JP		 2833 default:
2834 PARSE_ERROR1;
2835 }
2836 break;
2837 case 'X':
2838 /* &X - Switch to BTX-Mode and T.70 */
2839 p[0]++;
2840 switch (isdn_getnum(p)) {
2841 case 0:
2842 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2843 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2844 break;
2845 case 1:
2846 m->mdmreg[REG_T70] |= BIT_T70;
2847 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2848 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2849 info->xmit_size = 112;
2850 m->mdmreg[REG_SI1] = 4;
2851 m->mdmreg[REG_SI2] = 0;
2852 break;
2853 case 2:
2854 m->mdmreg[REG_T70] |= (BIT_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;
1da177e4
LT		 2859 break;
2860 default:
2861 PARSE_ERROR1;
475be4d8
JP		 2862 }
2863 break;
2864 default:
2865 PARSE_ERROR1;
1da177e4
LT		 2866 }
2867 return 0;
2868}
2869
2870static int
475be4d8 2871isdn_tty_check_ats(int mreg, int mval, modem_info *info, atemu *m)
1da177e4
LT		 2872{
2873 /* Some plausibility checks */
2874 switch (mreg) {
475be4d8
JP		 2875 case REG_L2PROT:
2876 if (mval > ISDN_PROTO_L2_MAX)
2877 return 1;
2878 break;
2879 case REG_PSIZE:
2880 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2881 return 1;
1da177e4 2882#ifdef CONFIG_ISDN_AUDIO
475be4d8 2883 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
1da177e4 2884 return 1;
475be4d8
JP		 2885#endif
2886 info->xmit_size = mval * 16;
2887 switch (m->mdmreg[REG_L2PROT]) {
2888 case ISDN_PROTO_L2_V11096:
2889 case ISDN_PROTO_L2_V11019:
2890 case ISDN_PROTO_L2_V11038:
2891 info->xmit_size /= 10;
2892 }
2893 break;
2894 case REG_SI1I:
2895 case REG_PLAN:
2896 case REG_SCREEN:
2897 /* readonly registers */
2898 return 1;
1da177e4
LT		 2899 }
2900 return 0;
2901}
2902
2903/*
2904 * Perform ATS command
2905 */
2906static int
475be4d8 2907isdn_tty_cmd_ATS(char **p, modem_info *info)
1da177e4
LT		 2908{
2909 atemu *m = &info->emu;
2910 int bitpos;
2911 int mreg;
2912 int mval;
2913 int bval;
2914
2915 mreg = isdn_getnum(p);
2916 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
2917 PARSE_ERROR1;
2918 switch (*p[0]) {
475be4d8
JP		 2919 case '=':
2920 p[0]++;
2921 mval = isdn_getnum(p);
2922 if (mval < 0 || mval > 255)
2923 PARSE_ERROR1;
2924 if (isdn_tty_check_ats(mreg, mval, info, m))
2925 PARSE_ERROR1;
2926 m->mdmreg[mreg] = mval;
2927 break;
2928 case '.':
2929 /* Set/Clear a single bit */
2930 p[0]++;
2931 bitpos = isdn_getnum(p);
2932 if ((bitpos < 0) || (bitpos > 7))
2933 PARSE_ERROR1;
2934 switch (*p[0]) {
1da177e4
LT		 2935 case '=':
2936 p[0]++;
475be4d8
JP		 2937 bval = isdn_getnum(p);
2938 if (bval < 0 || bval > 1)
1da177e4 2939 PARSE_ERROR1;
475be4d8
JP		 2940 if (bval)
2941 mval = m->mdmreg[mreg] | (1 << bitpos);
2942 else
2943 mval = m->mdmreg[mreg] & ~(1 << bitpos);
1da177e4
LT		 2944 if (isdn_tty_check_ats(mreg, mval, info, m))
2945 PARSE_ERROR1;
2946 m->mdmreg[mreg] = mval;
2947 break;
1da177e4
LT		 2948 case '?':
2949 p[0]++;
475be4d8
JP		 2950 isdn_tty_at_cout("\r\n", info);
2951 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
2952 info);
1da177e4
LT		 2953 break;
2954 default:
2955 PARSE_ERROR1;
475be4d8
JP		 2956 }
2957 break;
2958 case '?':
2959 p[0]++;
2960 isdn_tty_show_profile(mreg, info);
2961 break;
2962 default:
2963 PARSE_ERROR1;
2964 break;
1da177e4
LT		 2965 }
2966 return 0;
2967}
2968
2969/*
2970 * Perform ATA command
2971 */
2972static void
475be4d8 2973isdn_tty_cmd_ATA(modem_info *info)
1da177e4
LT		 2974{
2975 atemu *m = &info->emu;
2976 isdn_ctrl cmd;
2977 int l2;
2978
2979 if (info->msr & UART_MSR_RI) {
2980 /* Accept incoming call */
2981 info->last_dir = 0;
2982 strcpy(info->last_num, dev->num[info->drv_index]);
2983 m->mdmreg[REG_RINGCNT] = 0;
2984 info->msr &= ~UART_MSR_RI;
2985 l2 = m->mdmreg[REG_L2PROT];
2986#ifdef CONFIG_ISDN_AUDIO
2987 /* If more than one bit set in reg18, autoselect Layer2 */
2988 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
2989 if (m->mdmreg[REG_SI1I] == 1) {
2990 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
2991 l2 = ISDN_PROTO_L2_TRANS;
2992 } else
2993 l2 = ISDN_PROTO_L2_X75I;
2994 }
2995#endif
2996 cmd.driver = info->isdn_driver;
2997 cmd.command = ISDN_CMD_SETL2;
2998 cmd.arg = info->isdn_channel + (l2 << 8);
2999 info->last_l2 = l2;
3000 isdn_command(&cmd);
3001 cmd.driver = info->isdn_driver;
3002 cmd.command = ISDN_CMD_SETL3;
3003 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3004#ifdef CONFIG_ISDN_TTY_FAX
3005 if (l2 == ISDN_PROTO_L2_FAX) {
3006 cmd.parm.fax = info->fax;
3007 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3008 }
3009#endif
3010 isdn_command(&cmd);
3011 cmd.driver = info->isdn_driver;
3012 cmd.arg = info->isdn_channel;
3013 cmd.command = ISDN_CMD_ACCEPTD;
3014 info->dialing = 16;
3015 info->emu.carrierwait = 0;
3016 isdn_command(&cmd);
3017 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3018 } else
3019 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3020}
3021
3022#ifdef CONFIG_ISDN_AUDIO
3023/*
3024 * Parse AT+F.. commands
3025 */
3026static int
475be4d8 3027isdn_tty_cmd_PLUSF(char **p, modem_info *info)
1da177e4
LT		 3028{
3029 atemu *m = &info->emu;
3030 char rs[20];
3031
3032 if (!strncmp(p[0], "CLASS", 5)) {
3033 p[0] += 5;
3034 switch (*p[0]) {
475be4d8
JP		 3035 case '?':
3036 p[0]++;
3037 sprintf(rs, "\r\n%d",
3038 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
1da177e4 3039#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3040 if (TTY_IS_FCLASS2(info))
3041 sprintf(rs, "\r\n2");
3042 else if (TTY_IS_FCLASS1(info))
3043 sprintf(rs, "\r\n1");
1da177e4 3044#endif
475be4d8
JP		 3045 isdn_tty_at_cout(rs, info);
3046 break;
3047 case '=':
3048 p[0]++;
3049 switch (*p[0]) {
3050 case '0':
1da177e4 3051 p[0]++;
475be4d8
JP		 3052 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3053 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3054 m->mdmreg[REG_SI1] = 4;
3055 info->xmit_size =
3056 m->mdmreg[REG_PSIZE] * 16;
3057 break;
1da177e4 3058#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3059 case '1':
3060 p[0]++;
3061 if (!(dev->global_features &
3062 ISDN_FEATURE_L3_FCLASS1))
3063 PARSE_ERROR1;
3064 m->mdmreg[REG_SI1] = 1;
3065 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3066 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3067 info->xmit_size =
3068 m->mdmreg[REG_PSIZE] * 16;
3069 break;
3070 case '2':
3071 p[0]++;
3072 if (!(dev->global_features &
3073 ISDN_FEATURE_L3_FCLASS2))
3074 PARSE_ERROR1;
3075 m->mdmreg[REG_SI1] = 1;
3076 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3077 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3078 info->xmit_size =
3079 m->mdmreg[REG_PSIZE] * 16;
3080 break;
1da177e4 3081#endif
475be4d8
JP		 3082 case '8':
3083 p[0]++;
3084 /* L2 will change on dialout with si=1 */
3085 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3086 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3087 m->mdmreg[REG_SI1] = 5;
3088 info->xmit_size = VBUF;
3089 break;
3090 case '?':
3091 p[0]++;
3092 strcpy(rs, "\r\n0,");
1da177e4 3093#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3094 if (dev->global_features &
3095 ISDN_FEATURE_L3_FCLASS1)
3096 strcat(rs, "1,");
3097 if (dev->global_features &
3098 ISDN_FEATURE_L3_FCLASS2)
3099 strcat(rs, "2,");
3100#endif
3101 strcat(rs, "8");
3102 isdn_tty_at_cout(rs, info);
1da177e4
LT		 3103 break;
3104 default:
3105 PARSE_ERROR1;
475be4d8
JP		 3106 }
3107 break;
3108 default:
3109 PARSE_ERROR1;
1da177e4
LT		 3110 }
3111 return 0;
3112 }
3113#ifdef CONFIG_ISDN_TTY_FAX
3114 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3115#else
3116 PARSE_ERROR1;
3117#endif
3118}
3119
3120/*
3121 * Parse AT+V.. commands
3122 */
3123static int
475be4d8 3124isdn_tty_cmd_PLUSV(char **p, modem_info *info)
1da177e4
LT		 3125{
3126 atemu *m = &info->emu;
3127 isdn_ctrl cmd;
3128 static char *vcmd[] =
475be4d8 3129 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
1da177e4
LT		 3130 int i;
3131 int par1;
3132 int par2;
3133 char rs[20];
3134
3135 i = 0;
3136 while (vcmd[i]) {
3137 if (!strncmp(vcmd[i], p[0], 2)) {
3138 p[0] += 2;
3139 break;
3140 }
3141 i++;
3142 }
3143 switch (i) {
475be4d8
JP		 3144 case 0:
3145 /* AT+VNH - Auto hangup feature */
3146 switch (*p[0]) {
3147 case '?':
3148 p[0]++;
3149 isdn_tty_at_cout("\r\n1", info);
3150 break;
3151 case '=':
3152 p[0]++;
1da177e4 3153 switch (*p[0]) {
475be4d8
JP		 3154 case '1':
3155 p[0]++;
3156 break;
3157 case '?':
3158 p[0]++;
3159 isdn_tty_at_cout("\r\n1", info);
3160 break;
3161 default:
3162 PARSE_ERROR1;
1da177e4
LT		 3163 }
3164 break;
475be4d8
JP		 3165 default:
3166 PARSE_ERROR1;
3167 }
3168 break;
3169 case 1:
3170 /* AT+VIP - Reset all voice parameters */
3171 isdn_tty_modem_reset_vpar(m);
3172 break;
3173 case 2:
3174 /* AT+VLS - Select device, accept incoming call */
3175 switch (*p[0]) {
3176 case '?':
3177 p[0]++;
3178 sprintf(rs, "\r\n%d", m->vpar[0]);
3179 isdn_tty_at_cout(rs, info);
1da177e4 3180 break;
475be4d8
JP		 3181 case '=':
3182 p[0]++;
1da177e4 3183 switch (*p[0]) {
475be4d8
JP		 3184 case '0':
3185 p[0]++;
3186 m->vpar[0] = 0;
3187 break;
3188 case '2':
3189 p[0]++;
3190 m->vpar[0] = 2;
3191 break;
3192 case '?':
3193 p[0]++;
3194 isdn_tty_at_cout("\r\n0,2", info);
3195 break;
3196 default:
1da177e4
LT		 3197 PARSE_ERROR1;
3198 }
475be4d8
JP		 3199 break;
3200 default:
3201 PARSE_ERROR1;
3202 }
3203 break;
3204 case 3:
3205 /* AT+VRX - Start recording */
3206 if (!m->vpar[0])
3207 PARSE_ERROR1;
3208 if (info->online != 1) {
3209 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3210 return 1;
3211 }
3212 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3213 if (!info->dtmf_state) {
3214 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3215 PARSE_ERROR1;
3216 }
3217 info->silence_state = isdn_audio_silence_init(info->silence_state);
3218 if (!info->silence_state) {
3219 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3220 PARSE_ERROR1;
3221 }
3222 if (m->vpar[3] < 5) {
3223 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3224 if (!info->adpcmr) {
3225 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
1da177e4
LT		 3226 PARSE_ERROR1;
3227 }
475be4d8 3228 }
1da177e4 3229#ifdef ISDN_DEBUG_AT
475be4d8 3230 printk(KERN_DEBUG "AT: +VRX\n");
1da177e4 3231#endif
475be4d8
JP		 3232 info->vonline |= 1;
3233 isdn_tty_modem_result(RESULT_CONNECT, info);
3234 return 0;
3235 break;
3236 case 4:
3237 /* AT+VSD - Silence detection */
3238 switch (*p[0]) {
3239 case '?':
3240 p[0]++;
3241 sprintf(rs, "\r\n<%d>,<%d>",
3242 m->vpar[1],
3243 m->vpar[2]);
3244 isdn_tty_at_cout(rs, info);
1da177e4 3245 break;
475be4d8
JP		 3246 case '=':
3247 p[0]++;
3248 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3249 par1 = isdn_getnum(p);
3250 if ((par1 < 0) || (par1 > 31))
1da177e4 3251 PARSE_ERROR1;
475be4d8 3252 if (*p[0] != ',')
1da177e4 3253 PARSE_ERROR1;
475be4d8
JP		 3254 p[0]++;
3255 par2 = isdn_getnum(p);
3256 if ((par2 < 0) || (par2 > 255))
3257 PARSE_ERROR1;
3258 m->vpar[1] = par1;
3259 m->vpar[2] = par2;
3260 break;
3261 } else
3262 if (*p[0] == '?') {
1da177e4 3263 p[0]++;
475be4d8
JP		 3264 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3265 info);
1da177e4 3266 break;
475be4d8 3267 } else
1da177e4 3268 PARSE_ERROR1;
1da177e4 3269 break;
475be4d8
JP		 3270 default:
3271 PARSE_ERROR1;
3272 }
3273 break;
3274 case 5:
3275 /* AT+VSM - Select compression */
3276 switch (*p[0]) {
3277 case '?':
3278 p[0]++;
3279 sprintf(rs, "\r\n<%d>,<%d><8000>",
3280 m->vpar[3],
3281 m->vpar[1]);
3282 isdn_tty_at_cout(rs, info);
3283 break;
3284 case '=':
3285 p[0]++;
3286 switch (*p[0]) {
3287 case '2':
3288 case '3':
3289 case '4':
3290 case '5':
3291 case '6':
3292 par1 = isdn_getnum(p);
3293 if ((par1 < 2) || (par1 > 6))
3294 PARSE_ERROR1;
3295 m->vpar[3] = par1;
3296 break;
3297 case '?':
3298 p[0]++;
3299 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3300 info);
3301 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3302 info);
3303 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3304 info);
3305 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3306 info);
3307 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3308 info);
3309 break;
3310 default:
1da177e4 3311 PARSE_ERROR1;
1da177e4 3312 }
475be4d8
JP		 3313 break;
3314 default:
3315 PARSE_ERROR1;
3316 }
3317 break;
3318 case 6:
3319 /* AT+VTX - Start sending */
3320 if (!m->vpar[0])
3321 PARSE_ERROR1;
3322 if (info->online != 1) {
3323 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3324 return 1;
3325 }
3326 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3327 if (!info->dtmf_state) {
3328 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3329 PARSE_ERROR1;
3330 }
3331 if (m->vpar[3] < 5) {
3332 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3333 if (!info->adpcms) {
3334 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
1da177e4
LT		 3335 PARSE_ERROR1;
3336 }
475be4d8 3337 }
1da177e4 3338#ifdef ISDN_DEBUG_AT
475be4d8 3339 printk(KERN_DEBUG "AT: +VTX\n");
1da177e4 3340#endif
475be4d8
JP		 3341 m->lastDLE = 0;
3342 info->vonline |= 2;
3343 isdn_tty_modem_result(RESULT_CONNECT, info);
3344 return 0;
3345 break;
3346 case 7:
3347 /* AT+VDD - DTMF detection */
3348 switch (*p[0]) {
3349 case '?':
3350 p[0]++;
3351 sprintf(rs, "\r\n<%d>,<%d>",
3352 m->vpar[4],
3353 m->vpar[5]);
3354 isdn_tty_at_cout(rs, info);
1da177e4 3355 break;
475be4d8
JP		 3356 case '=':
3357 p[0]++;
3358 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3359 if (info->online != 1)
3360 PARSE_ERROR1;
3361 par1 = isdn_getnum(p);
3362 if ((par1 < 0) || (par1 > 15))
3363 PARSE_ERROR1;
3364 if (*p[0] != ',')
1da177e4 3365 PARSE_ERROR1;
475be4d8
JP		 3366 p[0]++;
3367 par2 = isdn_getnum(p);
3368 if ((par2 < 0) || (par2 > 255))
3369 PARSE_ERROR1;
3370 m->vpar[4] = par1;
3371 m->vpar[5] = par2;
3372 cmd.driver = info->isdn_driver;
3373 cmd.command = ISDN_CMD_AUDIO;
3374 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3375 cmd.parm.num[0] = par1;
3376 cmd.parm.num[1] = par2;
3377 isdn_command(&cmd);
3378 break;
3379 } else
3380 if (*p[0] == '?') {
3381 p[0]++;
3382 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3383 info);
1da177e4 3384 break;
475be4d8 3385 } else
1da177e4 3386 PARSE_ERROR1;
1da177e4
LT		 3387 break;
3388 default:
3389 PARSE_ERROR1;
475be4d8
JP		 3390 }
3391 break;
3392 default:
3393 PARSE_ERROR1;
1da177e4
LT		 3394 }
3395 return 0;
3396}
3397#endif /* CONFIG_ISDN_AUDIO */
3398
3399/*
3400 * Parse and perform an AT-command-line.
3401 */
3402static void
475be4d8 3403isdn_tty_parse_at(modem_info *info)
1da177e4
LT		 3404{
3405 atemu *m = &info->emu;
3406 char *p;
f417f5e4 3407 char ds[ISDN_MSNLEN];
1da177e4
LT		 3408
3409#ifdef ISDN_DEBUG_AT
3410 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3411#endif
3412 for (p = &m->mdmcmd[2]; *p;) {
3413 switch (*p) {
475be4d8
JP		 3414 case ' ':
3415 p++;
3416 break;
3417 case 'A':
3418 /* A - Accept incoming call */
3419 p++;
3420 isdn_tty_cmd_ATA(info);
3421 return;
3422 break;
3423 case 'D':
3424 /* D - Dial */
3425 if (info->msr & UART_MSR_DCD)
3426 PARSE_ERROR;
3427 if (info->msr & UART_MSR_RI) {
3428 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3429 return;
3430 }
3431 isdn_tty_getdial(++p, ds, sizeof ds);
3432 p += strlen(p);
3433 if (!strlen(m->msn))
3434 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3435 else if (strlen(ds))
3436 isdn_tty_dial(ds, info, m);
3437 else
3438 PARSE_ERROR;
3439 return;
3440 case 'E':
3441 /* E - Turn Echo on/off */
3442 p++;
3443 switch (isdn_getnum(&p)) {
3444 case 0:
3445 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
1da177e4 3446 break;
475be4d8
JP		 3447 case 1:
3448 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3449 break;
3450 default:
3451 PARSE_ERROR;
3452 }
3453 break;
3454 case 'H':
3455 /* H - On/Off-hook */
3456 p++;
3457 switch (*p) {
3458 case '0':
1da177e4 3459 p++;
475be4d8 3460 isdn_tty_on_hook(info);
1da177e4 3461 break;
475be4d8 3462 case '1':
1da177e4 3463 p++;
475be4d8 3464 isdn_tty_off_hook();
1da177e4 3465 break;
475be4d8
JP		 3466 default:
3467 isdn_tty_on_hook(info);
3468 break;
3469 }
3470 break;
3471 case 'I':
3472 /* I - Information */
3473 p++;
3474 isdn_tty_at_cout("\r\nLinux ISDN", info);
3475 switch (*p) {
3476 case '0':
3477 case '1':
1da177e4 3478 p++;
1da177e4 3479 break;
475be4d8 3480 case '2':
1da177e4 3481 p++;
475be4d8 3482 isdn_tty_report(info);
1da177e4 3483 break;
475be4d8 3484 case '3':
1da177e4 3485 p++;
475be4d8
JP		 3486 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
3487 isdn_tty_at_cout(ds, info);
1da177e4 3488 break;
475be4d8
JP		 3489 default:;
3490 }
3491 break;
3492#ifdef DUMMY_HAYES_AT
3493 case 'L':
3494 case 'M':
3495 /* only for be compilant with common scripts */
3496 /* no function */
3497 p++;
3498 isdn_getnum(&p);
3499 break;
1da177e4 3500#endif
475be4d8
JP		 3501 case 'O':
3502 /* O - Go online */
3503 p++;
3504 if (info->msr & UART_MSR_DCD)
3505 /* if B-Channel is up */
3506 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT : RESULT_CONNECT64000, info);
3507 else
3508 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3509 return;
3510 case 'Q':
3511 /* Q - Turn Emulator messages on/off */
3512 p++;
3513 switch (isdn_getnum(&p)) {
3514 case 0:
3515 m->mdmreg[REG_RESP] |= BIT_RESP;
3516 break;
3517 case 1:
3518 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3519 break;
3520 default:
3521 PARSE_ERROR;
3522 }
3523 break;
3524 case 'S':
3525 /* S - Set/Get Register */
3526 p++;
3527 if (isdn_tty_cmd_ATS(&p, info))
1da177e4 3528 return;
475be4d8
JP		 3529 break;
3530 case 'V':
3531 /* V - Numeric or ASCII Emulator-messages */
3532 p++;
3533 switch (isdn_getnum(&p)) {
3534 case 0:
3535 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3536 break;
3537 case 1:
3538 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
1da177e4 3539 break;
475be4d8
JP		 3540 default:
3541 PARSE_ERROR;
3542 }
3543 break;
3544 case 'Z':
3545 /* Z - Load Registers from Profile */
3546 p++;
3547 if (info->msr & UART_MSR_DCD) {
3548 info->online = 0;
3549 isdn_tty_on_hook(info);
3550 }
3551 isdn_tty_modem_reset_regs(info, 1);
3552 break;
3553 case '+':
3554 p++;
3555 switch (*p) {
3556#ifdef CONFIG_ISDN_AUDIO
3557 case 'F':
1da177e4 3558 p++;
475be4d8 3559 if (isdn_tty_cmd_PLUSF(&p, info))
1da177e4
LT		 3560 return;
3561 break;
3562 case 'V':
475be4d8
JP		 3563 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3564 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3565 PARSE_ERROR;
1da177e4 3566 p++;
475be4d8
JP		 3567 if (isdn_tty_cmd_PLUSV(&p, info))
3568 return;
1da177e4 3569 break;
475be4d8
JP		 3570#endif /* CONFIG_ISDN_AUDIO */
3571 case 'S': /* SUSPEND */
1da177e4 3572 p++;
475be4d8
JP		 3573 isdn_tty_get_msnstr(ds, &p);
3574 isdn_tty_suspend(ds, info, m);
1da177e4 3575 break;
475be4d8 3576 case 'R': /* RESUME */
1da177e4 3577 p++;
475be4d8
JP		 3578 isdn_tty_get_msnstr(ds, &p);
3579 isdn_tty_resume(ds, info, m);
1da177e4 3580 break;
475be4d8 3581 case 'M': /* MESSAGE */
1da177e4 3582 p++;
475be4d8 3583 isdn_tty_send_msg(info, m, p);
1da177e4
LT		 3584 break;
3585 default:
3586 PARSE_ERROR;
475be4d8
JP		 3587 }
3588 break;
3589 case '&':
3590 p++;
3591 if (isdn_tty_cmd_ATand(&p, info))
3592 return;
3593 break;
3594 default:
3595 PARSE_ERROR;
1da177e4
LT		 3596 }
3597 }
3598#ifdef CONFIG_ISDN_AUDIO
3599 if (!info->vonline)
3600#endif
3601 isdn_tty_modem_result(RESULT_OK, info);
3602}
3603
3604/* Need own toupper() because standard-toupper is not available
3605 * within modules.
3606 */
475be4d8 3607#define my_toupper(c) (((c >= 'a') && (c <= 'z')) ? (c & 0xdf) : c)
1da177e4
LT		 3608
3609/*
3610 * Perform line-editing of AT-commands
3611 *
3612 * Parameters:
3613 * p inputbuffer
3614 * count length of buffer
3615 * channel index to line (minor-device)
3616 */
3617static int
475be4d8 3618isdn_tty_edit_at(const char *p, int count, modem_info *info)
1da177e4
LT		 3619{
3620 atemu *m = &info->emu;
3621 int total = 0;
3622 u_char c;
3623 char eb[2];
3624 int cnt;
3625
3626 for (cnt = count; cnt > 0; p++, cnt--) {
3627 c = *p;
3628 total++;
3629 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3630 /* Separator (CR or LF) */
3631 m->mdmcmd[m->mdmcmdl] = 0;
3632 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3633 eb[0] = c;
3634 eb[1] = 0;
3635 isdn_tty_at_cout(eb, info);
3636 }
3637 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3638 isdn_tty_parse_at(info);
3639 m->mdmcmdl = 0;
3640 continue;
3641 }
3642 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3643 /* Backspace-Function */
3644 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3645 if (m->mdmcmdl)
3646 m->mdmcmdl--;
3647 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3648 isdn_tty_at_cout("\b", info);
3649 }
3650 continue;
3651 }
3652 if (cmdchar(c)) {
3653 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3654 eb[0] = c;
3655 eb[1] = 0;
3656 isdn_tty_at_cout(eb, info);
3657 }
3658 if (m->mdmcmdl < 255) {
3659 c = my_toupper(c);
3660 switch (m->mdmcmdl) {
475be4d8
JP		 3661 case 1:
3662 if (c == 'T') {
3663 m->mdmcmd[m->mdmcmdl] = c;
3664 m->mdmcmd[++m->mdmcmdl] = 0;
1da177e4 3665 break;
475be4d8
JP		 3666 } else
3667 m->mdmcmdl = 0;
3668 /* Fall through, check for 'A' */
3669 case 0:
3670 if (c == 'A') {
1da177e4
LT		 3671 m->mdmcmd[m->mdmcmdl] = c;
3672 m->mdmcmd[++m->mdmcmdl] = 0;
475be4d8
JP		 3673 }
3674 break;
3675 default:
3676 m->mdmcmd[m->mdmcmdl] = c;
3677 m->mdmcmd[++m->mdmcmdl] = 0;
1da177e4
LT		 3678 }
3679 }
3680 }
3681 }
3682 return total;
3683}
3684
3685/*
3686 * Switch all modem-channels who are online and got a valid
3687 * escape-sequence 1.5 seconds ago, to command-mode.
3688 * This function is called every second via timer-interrupt from within
3689 * timer-dispatcher isdn_timer_function()
3690 */
3691void
3692isdn_tty_modem_escape(void)
3693{
3694 int ton = 0;
3695 int i;
3696 int midx;
3697
3698 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
37630f40
JS		 3699 if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) {
3700 modem_info *info = &dev->mdm.info[midx];
3701 if (info->online) {
3702 ton = 1;
3703 if ((info->emu.pluscount == 3) &&
3704 time_after(jiffies,
3705 info->emu.lastplus + PLUSWAIT2)) {
3706 info->emu.pluscount = 0;
3707 info->online = 0;
3708 isdn_tty_modem_result(RESULT_OK, info);
1da177e4
LT		 3709 }
3710 }
37630f40 3711 }
1da177e4
LT		 3712 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3713}
3714
3715/*
3716 * Put a RING-message to all modem-channels who have the RI-bit set.
3717 * This function is called every second via timer-interrupt from within
3718 * timer-dispatcher isdn_timer_function()
3719 */
3720void
3721isdn_tty_modem_ring(void)
3722{
3723 int ton = 0;
3724 int i;
3725
3726 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3727 modem_info *info = &dev->mdm.info[i];
3728 if (info->msr & UART_MSR_RI) {
3729 ton = 1;
3730 isdn_tty_modem_result(RESULT_RING, info);
3731 }
3732 }
3733 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3734}
3735
3736/*
3737 * For all online tty's, try sending data to
3738 * the lower levels.
3739 */
3740void
3741isdn_tty_modem_xmit(void)
3742{
3743 int ton = 1;
3744 int i;
3745
3746 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3747 modem_info *info = &dev->mdm.info[i];
3748 if (info->online) {
3749 ton = 1;
3750 isdn_tty_senddown(info);
3751 isdn_tty_tint(info);
3752 }
3753 }
3754 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3755}
3756
3757/*
3758 * Check all channels if we have a 'no carrier' timeout.
3759 * Timeout value is set by Register S7.
3760 */
3761void
3762isdn_tty_carrier_timeout(void)
3763{
3764 int ton = 0;
3765 int i;
3766
3767 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3768 modem_info *info = &dev->mdm.info[i];
37630f40
JS		 3769 if (!info->dialing)
3770 continue;
3771 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3772 info->dialing = 0;
3773 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3774 isdn_tty_modem_hup(info, 1);
3775 } else
3776 ton = 1;
1da177e4
LT		 3777 }
3778 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);
3779}
Linux kernel - Deliverables
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