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