projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
TTY: call tty_port_destroy in the rest of drivers
[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 int c;
64 int len;
65 struct tty_struct *tty;
66 char last;
67
68 if (!info->online)
69 return 0;
70
71 tty = info->port.tty;
72 if (!tty)
73 return 0;
74
75 if (!(info->mcr & UART_MCR_RTS))
76 return 0;
77
78 len = skb->len
79 #ifdef CONFIG_ISDN_AUDIO
80 + ISDN_AUDIO_SKB_DLECOUNT(skb)
81 #endif
82 ;
83
84 c = tty_buffer_request_room(tty, len);
85 if (c < len)
86 return 0;
87
88 #ifdef CONFIG_ISDN_AUDIO
89 if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
90 int l = skb->len;
91 unsigned char *dp = skb->data;
92 while (--l) {
93 if (*dp == DLE)
94 tty_insert_flip_char(tty, DLE, 0);
95 tty_insert_flip_char(tty, *dp++, 0);
96 }
97 if (*dp == DLE)
98 tty_insert_flip_char(tty, DLE, 0);
99 last = *dp;
100 } else {
101 #endif
102 if (len > 1)
103 tty_insert_flip_string(tty, skb->data, len - 1);
104 last = skb->data[len - 1];
105 #ifdef CONFIG_ISDN_AUDIO
106 }
107 #endif
108 if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
109 tty_insert_flip_char(tty, last, 0xFF);
110 else
111 tty_insert_flip_char(tty, last, TTY_NORMAL);
112 tty_flip_buffer_push(tty);
113 kfree_skb(skb);
114
115 return 1;
116 }
117
118 /* isdn_tty_readmodem() is called periodically from within timer-interrupt.
119 * It tries getting received data from the receive queue an stuff it into
120 * the tty's flip-buffer.
121 */
122 void
123 isdn_tty_readmodem(void)
124 {
125 int resched = 0;
126 int midx;
127 int i;
128 int r;
129 struct tty_struct *tty;
130 modem_info *info;
131
132 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
133 midx = dev->m_idx[i];
134 if (midx < 0)
135 continue;
136
137 info = &dev->mdm.info[midx];
138 if (!info->online)
139 continue;
140
141 r = 0;
142 #ifdef CONFIG_ISDN_AUDIO
143 isdn_audio_eval_dtmf(info);
144 if ((info->vonline & 1) && (info->emu.vpar[1]))
145 isdn_audio_eval_silence(info);
146 #endif
147 tty = info->port.tty;
148 if (tty) {
149 if (info->mcr & UART_MCR_RTS) {
150 /* CISCO AsyncPPP Hack */
151 if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
152 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
153 else
154 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
155 if (r)
156 tty_flip_buffer_push(tty);
157 } else
158 r = 1;
159 } else
160 r = 1;
161 if (r) {
162 info->rcvsched = 0;
163 resched = 1;
164 } else
165 info->rcvsched = 1;
166 }
167 if (!resched)
168 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
169 }
170
171 int
172 isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
173 {
174 ulong flags;
175 int midx;
176 #ifdef CONFIG_ISDN_AUDIO
177 int ifmt;
178 #endif
179 modem_info *info;
180
181 if ((midx = dev->m_idx[i]) < 0) {
182 /* if midx is invalid, packet is not for tty */
183 return 0;
184 }
185 info = &dev->mdm.info[midx];
186 #ifdef CONFIG_ISDN_AUDIO
187 ifmt = 1;
188
189 if ((info->vonline) && (!info->emu.vpar[4]))
190 isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
191 if ((info->vonline & 1) && (info->emu.vpar[1]))
192 isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
193 #endif
194 if ((info->online < 2)
195 #ifdef CONFIG_ISDN_AUDIO
196 && (!(info->vonline & 1))
197 #endif
198 ) {
199 /* If Modem not listening, drop data */
200 kfree_skb(skb);
201 return 1;
202 }
203 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
204 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
205 /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
206 if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
207 skb_pull(skb, 4);
208 else
209 if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
210 skb_pull(skb, 2);
211 } else
212 /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
213 if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
214 skb_pull(skb, 4);
215 }
216 #ifdef CONFIG_ISDN_AUDIO
217 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
218 ISDN_AUDIO_SKB_LOCK(skb) = 0;
219 if (info->vonline & 1) {
220 /* voice conversion/compression */
221 switch (info->emu.vpar[3]) {
222 case 2:
223 case 3:
224 case 4:
225 /* adpcm
226 * Since compressed data takes less
227 * space, we can overwrite the buffer.
228 */
229 skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
230 ifmt,
231 skb->data,
232 skb->data,
233 skb->len));
234 break;
235 case 5:
236 /* a-law */
237 if (!ifmt)
238 isdn_audio_ulaw2alaw(skb->data, skb->len);
239 break;
240 case 6:
241 /* u-law */
242 if (ifmt)
243 isdn_audio_alaw2ulaw(skb->data, skb->len);
244 break;
245 }
246 ISDN_AUDIO_SKB_DLECOUNT(skb) =
247 isdn_tty_countDLE(skb->data, skb->len);
248 }
249 #ifdef CONFIG_ISDN_TTY_FAX
250 else {
251 if (info->faxonline & 2) {
252 isdn_tty_fax_bitorder(info, skb);
253 ISDN_AUDIO_SKB_DLECOUNT(skb) =
254 isdn_tty_countDLE(skb->data, skb->len);
255 }
256 }
257 #endif
258 #endif
259 /* Try to deliver directly via tty-buf if queue is empty */
260 spin_lock_irqsave(&info->readlock, flags);
261 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
262 if (isdn_tty_try_read(info, skb)) {
263 spin_unlock_irqrestore(&info->readlock, flags);
264 return 1;
265 }
266 /* Direct deliver failed or queue wasn't empty.
267 * Queue up for later dequeueing via timer-irq.
268 */
269 __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
270 dev->drv[di]->rcvcount[channel] +=
271 (skb->len
272 #ifdef CONFIG_ISDN_AUDIO
273 + ISDN_AUDIO_SKB_DLECOUNT(skb)
274 #endif
275 );
276 spin_unlock_irqrestore(&info->readlock, flags);
277 /* Schedule dequeuing */
278 if ((dev->modempoll) && (info->rcvsched))
279 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
280 return 1;
281 }
282
283 static void
284 isdn_tty_cleanup_xmit(modem_info *info)
285 {
286 skb_queue_purge(&info->xmit_queue);
287 #ifdef CONFIG_ISDN_AUDIO
288 skb_queue_purge(&info->dtmf_queue);
289 #endif
290 }
291
292 static void
293 isdn_tty_tint(modem_info *info)
294 {
295 struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
296 int len, slen;
297
298 if (!skb)
299 return;
300 len = skb->len;
301 if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
302 info->isdn_channel, 1, skb)) == len) {
303 struct tty_struct *tty = info->port.tty;
304 info->send_outstanding++;
305 info->msr &= ~UART_MSR_CTS;
306 info->lsr &= ~UART_LSR_TEMT;
307 tty_wakeup(tty);
308 return;
309 }
310 if (slen < 0) {
311 /* Error: no channel, already shutdown, or wrong parameter */
312 dev_kfree_skb(skb);
313 return;
314 }
315 skb_queue_head(&info->xmit_queue, skb);
316 }
317
318 #ifdef CONFIG_ISDN_AUDIO
319 static int
320 isdn_tty_countDLE(unsigned char *buf, int len)
321 {
322 int count = 0;
323
324 while (len--)
325 if (*buf++ == DLE)
326 count++;
327 return count;
328 }
329
330 /* This routine is called from within isdn_tty_write() to perform
331 * DLE-decoding when sending audio-data.
332 */
333 static int
334 isdn_tty_handleDLEdown(modem_info *info, atemu *m, int len)
335 {
336 unsigned char *p = &info->port.xmit_buf[info->xmit_count];
337 int count = 0;
338
339 while (len > 0) {
340 if (m->lastDLE) {
341 m->lastDLE = 0;
342 switch (*p) {
343 case DLE:
344 /* Escape code */
345 if (len > 1)
346 memmove(p, p + 1, len - 1);
347 p--;
348 count++;
349 break;
350 case ETX:
351 /* End of data */
352 info->vonline |= 4;
353 return count;
354 case DC4:
355 /* Abort RX */
356 info->vonline &= ~1;
357 #ifdef ISDN_DEBUG_MODEM_VOICE
358 printk(KERN_DEBUG
359 "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
360 info->line);
361 #endif
362 isdn_tty_at_cout("\020\003", info);
363 if (!info->vonline) {
364 #ifdef ISDN_DEBUG_MODEM_VOICE
365 printk(KERN_DEBUG
366 "DLEdown: send VCON on ttyI%d\n",
367 info->line);
368 #endif
369 isdn_tty_at_cout("\r\nVCON\r\n", info);
370 }
371 /* Fall through */
372 case 'q':
373 case 's':
374 /* Silence */
375 if (len > 1)
376 memmove(p, p + 1, len - 1);
377 p--;
378 break;
379 }
380 } else {
381 if (*p == DLE)
382 m->lastDLE = 1;
383 else
384 count++;
385 }
386 p++;
387 len--;
388 }
389 if (len < 0) {
390 printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
391 return 0;
392 }
393 return count;
394 }
395
396 /* This routine is called from within isdn_tty_write() when receiving
397 * audio-data. It interrupts receiving, if an character other than
398 * ^S or ^Q is sent.
399 */
400 static int
401 isdn_tty_end_vrx(const char *buf, int c)
402 {
403 char ch;
404
405 while (c--) {
406 ch = *buf;
407 if ((ch != 0x11) && (ch != 0x13))
408 return 1;
409 buf++;
410 }
411 return 0;
412 }
413
414 static int voice_cf[7] =
415 {0, 0, 4, 3, 2, 0, 0};
416
417 #endif /* CONFIG_ISDN_AUDIO */
418
419 /* isdn_tty_senddown() is called either directly from within isdn_tty_write()
420 * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
421 * outgoing data from the tty's xmit-buffer, handles voice-decompression or
422 * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
423 */
424 static void
425 isdn_tty_senddown(modem_info *info)
426 {
427 int buflen;
428 int skb_res;
429 #ifdef CONFIG_ISDN_AUDIO
430 int audio_len;
431 #endif
432 struct sk_buff *skb;
433
434 #ifdef CONFIG_ISDN_AUDIO
435 if (info->vonline & 4) {
436 info->vonline &= ~6;
437 if (!info->vonline) {
438 #ifdef ISDN_DEBUG_MODEM_VOICE
439 printk(KERN_DEBUG
440 "senddown: send VCON on ttyI%d\n",
441 info->line);
442 #endif
443 isdn_tty_at_cout("\r\nVCON\r\n", info);
444 }
445 }
446 #endif
447 if (!(buflen = info->xmit_count))
448 return;
449 if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
450 info->msr &= ~UART_MSR_CTS;
451 info->lsr &= ~UART_LSR_TEMT;
452 /* info->xmit_count is modified here and in isdn_tty_write().
453 * So we return here if isdn_tty_write() is in the
454 * critical section.
455 */
456 atomic_inc(&info->xmit_lock);
457 if (!(atomic_dec_and_test(&info->xmit_lock)))
458 return;
459 if (info->isdn_driver < 0) {
460 info->xmit_count = 0;
461 return;
462 }
463 skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
464 #ifdef CONFIG_ISDN_AUDIO
465 if (info->vonline & 2)
466 audio_len = buflen * voice_cf[info->emu.vpar[3]];
467 else
468 audio_len = 0;
469 skb = dev_alloc_skb(skb_res + buflen + audio_len);
470 #else
471 skb = dev_alloc_skb(skb_res + buflen);
472 #endif
473 if (!skb) {
474 printk(KERN_WARNING
475 "isdn_tty: Out of memory in ttyI%d senddown\n",
476 info->line);
477 return;
478 }
479 skb_reserve(skb, skb_res);
480 memcpy(skb_put(skb, buflen), info->port.xmit_buf, buflen);
481 info->xmit_count = 0;
482 #ifdef CONFIG_ISDN_AUDIO
483 if (info->vonline & 2) {
484 /* For now, ifmt is fixed to 1 (alaw), since this
485 * is used with ISDN everywhere in the world, except
486 * US, Canada and Japan.
487 * Later, when US-ISDN protocols are implemented,
488 * this setting will depend on the D-channel protocol.
489 */
490 int ifmt = 1;
491
492 /* voice conversion/decompression */
493 switch (info->emu.vpar[3]) {
494 case 2:
495 case 3:
496 case 4:
497 /* adpcm, compatible to ZyXel 1496 modem
498 * with ROM revision 6.01
499 */
500 audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
501 ifmt,
502 skb->data,
503 skb_put(skb, audio_len),
504 buflen);
505 skb_pull(skb, buflen);
506 skb_trim(skb, audio_len);
507 break;
508 case 5:
509 /* a-law */
510 if (!ifmt)
511 isdn_audio_alaw2ulaw(skb->data,
512 buflen);
513 break;
514 case 6:
515 /* u-law */
516 if (ifmt)
517 isdn_audio_ulaw2alaw(skb->data,
518 buflen);
519 break;
520 }
521 }
522 #endif /* CONFIG_ISDN_AUDIO */
523 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
524 /* Add T.70 simplified header */
525 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT)
526 memcpy(skb_push(skb, 2), "\1\0", 2);
527 else
528 memcpy(skb_push(skb, 4), "\1\0\1\0", 4);
529 }
530 skb_queue_tail(&info->xmit_queue, skb);
531 }
532
533 /************************************************************
534 *
535 * Modem-functions
536 *
537 * mostly "stolen" from original Linux-serial.c and friends.
538 *
539 ************************************************************/
540
541 /* The next routine is called once from within timer-interrupt
542 * triggered within isdn_tty_modem_ncarrier(). It calls
543 * isdn_tty_modem_result() to stuff a "NO CARRIER" Message
544 * into the tty's buffer.
545 */
546 static void
547 isdn_tty_modem_do_ncarrier(unsigned long data)
548 {
549 modem_info *info = (modem_info *) data;
550 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
551 }
552
553 /* Next routine is called, whenever the DTR-signal is raised.
554 * It checks the ncarrier-flag, and triggers the above routine
555 * when necessary. The ncarrier-flag is set, whenever DTR goes
556 * low.
557 */
558 static void
559 isdn_tty_modem_ncarrier(modem_info *info)
560 {
561 if (info->ncarrier) {
562 info->nc_timer.expires = jiffies + HZ;
563 add_timer(&info->nc_timer);
564 }
565 }
566
567 /*
568 * return the usage calculated by si and layer 2 protocol
569 */
570 static int
571 isdn_calc_usage(int si, int l2)
572 {
573 int usg = ISDN_USAGE_MODEM;
574
575 #ifdef CONFIG_ISDN_AUDIO
576 if (si == 1) {
577 switch (l2) {
578 case ISDN_PROTO_L2_MODEM:
579 usg = ISDN_USAGE_MODEM;
580 break;
581 #ifdef CONFIG_ISDN_TTY_FAX
582 case ISDN_PROTO_L2_FAX:
583 usg = ISDN_USAGE_FAX;
584 break;
585 #endif
586 case ISDN_PROTO_L2_TRANS:
587 default:
588 usg = ISDN_USAGE_VOICE;
589 break;
590 }
591 }
592 #endif
593 return (usg);
594 }
595
596 /* isdn_tty_dial() performs dialing of a tty an the necessary
597 * setup of the lower levels before that.
598 */
599 static void
600 isdn_tty_dial(char *n, modem_info *info, atemu *m)
601 {
602 int usg = ISDN_USAGE_MODEM;
603 int si = 7;
604 int l2 = m->mdmreg[REG_L2PROT];
605 u_long flags;
606 isdn_ctrl cmd;
607 int i;
608 int j;
609
610 for (j = 7; j >= 0; j--)
611 if (m->mdmreg[REG_SI1] & (1 << j)) {
612 si = bit2si[j];
613 break;
614 }
615 usg = isdn_calc_usage(si, l2);
616 #ifdef CONFIG_ISDN_AUDIO
617 if ((si == 1) &&
618 (l2 != ISDN_PROTO_L2_MODEM)
619 #ifdef CONFIG_ISDN_TTY_FAX
620 && (l2 != ISDN_PROTO_L2_FAX)
621 #endif
622 ) {
623 l2 = ISDN_PROTO_L2_TRANS;
624 usg = ISDN_USAGE_VOICE;
625 }
626 #endif
627 m->mdmreg[REG_SI1I] = si2bit[si];
628 spin_lock_irqsave(&dev->lock, flags);
629 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
630 if (i < 0) {
631 spin_unlock_irqrestore(&dev->lock, flags);
632 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
633 } else {
634 info->isdn_driver = dev->drvmap[i];
635 info->isdn_channel = dev->chanmap[i];
636 info->drv_index = i;
637 dev->m_idx[i] = info->line;
638 dev->usage[i] |= ISDN_USAGE_OUTGOING;
639 info->last_dir = 1;
640 strcpy(info->last_num, n);
641 isdn_info_update();
642 spin_unlock_irqrestore(&dev->lock, flags);
643 cmd.driver = info->isdn_driver;
644 cmd.arg = info->isdn_channel;
645 cmd.command = ISDN_CMD_CLREAZ;
646 isdn_command(&cmd);
647 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
648 cmd.driver = info->isdn_driver;
649 cmd.command = ISDN_CMD_SETEAZ;
650 isdn_command(&cmd);
651 cmd.driver = info->isdn_driver;
652 cmd.command = ISDN_CMD_SETL2;
653 info->last_l2 = l2;
654 cmd.arg = info->isdn_channel + (l2 << 8);
655 isdn_command(&cmd);
656 cmd.driver = info->isdn_driver;
657 cmd.command = ISDN_CMD_SETL3;
658 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
659 #ifdef CONFIG_ISDN_TTY_FAX
660 if (l2 == ISDN_PROTO_L2_FAX) {
661 cmd.parm.fax = info->fax;
662 info->fax->direction = ISDN_TTY_FAX_CONN_OUT;
663 }
664 #endif
665 isdn_command(&cmd);
666 cmd.driver = info->isdn_driver;
667 cmd.arg = info->isdn_channel;
668 sprintf(cmd.parm.setup.phone, "%s", n);
669 sprintf(cmd.parm.setup.eazmsn, "%s",
670 isdn_map_eaz2msn(m->msn, info->isdn_driver));
671 cmd.parm.setup.si1 = si;
672 cmd.parm.setup.si2 = m->mdmreg[REG_SI2];
673 cmd.command = ISDN_CMD_DIAL;
674 info->dialing = 1;
675 info->emu.carrierwait = 0;
676 strcpy(dev->num[i], n);
677 isdn_info_update();
678 isdn_command(&cmd);
679 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
680 }
681 }
682
683 /* isdn_tty_hangup() disassociates a tty from the real
684 * ISDN-line (hangup). The usage-status is cleared
685 * and some cleanup is done also.
686 */
687 void
688 isdn_tty_modem_hup(modem_info *info, int local)
689 {
690 isdn_ctrl cmd;
691 int di, ch;
692
693 if (!info)
694 return;
695
696 di = info->isdn_driver;
697 ch = info->isdn_channel;
698 if (di < 0 || ch < 0)
699 return;
700
701 info->isdn_driver = -1;
702 info->isdn_channel = -1;
703
704 #ifdef ISDN_DEBUG_MODEM_HUP
705 printk(KERN_DEBUG "Mhup ttyI%d\n", info->line);
706 #endif
707 info->rcvsched = 0;
708 isdn_tty_flush_buffer(info->port.tty);
709 if (info->online) {
710 info->last_lhup = local;
711 info->online = 0;
712 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
713 }
714 #ifdef CONFIG_ISDN_AUDIO
715 info->vonline = 0;
716 #ifdef CONFIG_ISDN_TTY_FAX
717 info->faxonline = 0;
718 info->fax->phase = ISDN_FAX_PHASE_IDLE;
719 #endif
720 info->emu.vpar[4] = 0;
721 info->emu.vpar[5] = 8;
722 kfree(info->dtmf_state);
723 info->dtmf_state = NULL;
724 kfree(info->silence_state);
725 info->silence_state = NULL;
726 kfree(info->adpcms);
727 info->adpcms = NULL;
728 kfree(info->adpcmr);
729 info->adpcmr = NULL;
730 #endif
731 if ((info->msr & UART_MSR_RI) &&
732 (info->emu.mdmreg[REG_RUNG] & BIT_RUNG))
733 isdn_tty_modem_result(RESULT_RUNG, info);
734 info->msr &= ~(UART_MSR_DCD | UART_MSR_RI);
735 info->lsr |= UART_LSR_TEMT;
736
737 if (local) {
738 cmd.driver = di;
739 cmd.command = ISDN_CMD_HANGUP;
740 cmd.arg = ch;
741 isdn_command(&cmd);
742 }
743
744 isdn_all_eaz(di, ch);
745 info->emu.mdmreg[REG_RINGCNT] = 0;
746 isdn_free_channel(di, ch, 0);
747
748 if (info->drv_index >= 0) {
749 dev->m_idx[info->drv_index] = -1;
750 info->drv_index = -1;
751 }
752 }
753
754 /*
755 * Begin of a CAPI like interface, currently used only for
756 * supplementary service (CAPI 2.0 part III)
757 */
758 #include <linux/isdn/capicmd.h>
759 #include <linux/module.h>
760
761 int
762 isdn_tty_capi_facility(capi_msg *cm) {
763 return (-1); /* dummy */
764 }
765
766 /* isdn_tty_suspend() tries to suspend the current tty connection
767 */
768 static void
769 isdn_tty_suspend(char *id, modem_info *info, atemu *m)
770 {
771 isdn_ctrl cmd;
772
773 int l;
774
775 if (!info)
776 return;
777
778 #ifdef ISDN_DEBUG_MODEM_SERVICES
779 printk(KERN_DEBUG "Msusp ttyI%d\n", info->line);
780 #endif
781 l = strlen(id);
782 if ((info->isdn_driver >= 0)) {
783 cmd.parm.cmsg.Length = l + 18;
784 cmd.parm.cmsg.Command = CAPI_FACILITY;
785 cmd.parm.cmsg.Subcommand = CAPI_REQ;
786 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
787 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
788 cmd.parm.cmsg.para[1] = 0;
789 cmd.parm.cmsg.para[2] = l + 3;
790 cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */
791 cmd.parm.cmsg.para[4] = 0;
792 cmd.parm.cmsg.para[5] = l;
793 strncpy(&cmd.parm.cmsg.para[6], id, l);
794 cmd.command = CAPI_PUT_MESSAGE;
795 cmd.driver = info->isdn_driver;
796 cmd.arg = info->isdn_channel;
797 isdn_command(&cmd);
798 }
799 }
800
801 /* isdn_tty_resume() tries to resume a suspended call
802 * setup of the lower levels before that. unfortunately here is no
803 * checking for compatibility of used protocols implemented by Q931
804 * It does the same things like isdn_tty_dial, the last command
805 * is different, may be we can merge it.
806 */
807
808 static void
809 isdn_tty_resume(char *id, modem_info *info, atemu *m)
810 {
811 int usg = ISDN_USAGE_MODEM;
812 int si = 7;
813 int l2 = m->mdmreg[REG_L2PROT];
814 isdn_ctrl cmd;
815 ulong flags;
816 int i;
817 int j;
818 int l;
819
820 l = strlen(id);
821 for (j = 7; j >= 0; j--)
822 if (m->mdmreg[REG_SI1] & (1 << j)) {
823 si = bit2si[j];
824 break;
825 }
826 usg = isdn_calc_usage(si, l2);
827 #ifdef CONFIG_ISDN_AUDIO
828 if ((si == 1) &&
829 (l2 != ISDN_PROTO_L2_MODEM)
830 #ifdef CONFIG_ISDN_TTY_FAX
831 && (l2 != ISDN_PROTO_L2_FAX)
832 #endif
833 ) {
834 l2 = ISDN_PROTO_L2_TRANS;
835 usg = ISDN_USAGE_VOICE;
836 }
837 #endif
838 m->mdmreg[REG_SI1I] = si2bit[si];
839 spin_lock_irqsave(&dev->lock, flags);
840 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
841 if (i < 0) {
842 spin_unlock_irqrestore(&dev->lock, flags);
843 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
844 } else {
845 info->isdn_driver = dev->drvmap[i];
846 info->isdn_channel = dev->chanmap[i];
847 info->drv_index = i;
848 dev->m_idx[i] = info->line;
849 dev->usage[i] |= ISDN_USAGE_OUTGOING;
850 info->last_dir = 1;
851 // strcpy(info->last_num, n);
852 isdn_info_update();
853 spin_unlock_irqrestore(&dev->lock, flags);
854 cmd.driver = info->isdn_driver;
855 cmd.arg = info->isdn_channel;
856 cmd.command = ISDN_CMD_CLREAZ;
857 isdn_command(&cmd);
858 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
859 cmd.driver = info->isdn_driver;
860 cmd.command = ISDN_CMD_SETEAZ;
861 isdn_command(&cmd);
862 cmd.driver = info->isdn_driver;
863 cmd.command = ISDN_CMD_SETL2;
864 info->last_l2 = l2;
865 cmd.arg = info->isdn_channel + (l2 << 8);
866 isdn_command(&cmd);
867 cmd.driver = info->isdn_driver;
868 cmd.command = ISDN_CMD_SETL3;
869 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
870 isdn_command(&cmd);
871 cmd.driver = info->isdn_driver;
872 cmd.arg = info->isdn_channel;
873 cmd.parm.cmsg.Length = l + 18;
874 cmd.parm.cmsg.Command = CAPI_FACILITY;
875 cmd.parm.cmsg.Subcommand = CAPI_REQ;
876 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
877 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
878 cmd.parm.cmsg.para[1] = 0;
879 cmd.parm.cmsg.para[2] = l + 3;
880 cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */
881 cmd.parm.cmsg.para[4] = 0;
882 cmd.parm.cmsg.para[5] = l;
883 strncpy(&cmd.parm.cmsg.para[6], id, l);
884 cmd.command = CAPI_PUT_MESSAGE;
885 info->dialing = 1;
886 // strcpy(dev->num[i], n);
887 isdn_info_update();
888 isdn_command(&cmd);
889 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
890 }
891 }
892
893 /* isdn_tty_send_msg() sends a message to a HL driver
894 * This is used for hybrid modem cards to send AT commands to it
895 */
896
897 static void
898 isdn_tty_send_msg(modem_info *info, atemu *m, char *msg)
899 {
900 int usg = ISDN_USAGE_MODEM;
901 int si = 7;
902 int l2 = m->mdmreg[REG_L2PROT];
903 isdn_ctrl cmd;
904 ulong flags;
905 int i;
906 int j;
907 int l;
908
909 l = strlen(msg);
910 if (!l) {
911 isdn_tty_modem_result(RESULT_ERROR, info);
912 return;
913 }
914 for (j = 7; j >= 0; j--)
915 if (m->mdmreg[REG_SI1] & (1 << j)) {
916 si = bit2si[j];
917 break;
918 }
919 usg = isdn_calc_usage(si, l2);
920 #ifdef CONFIG_ISDN_AUDIO
921 if ((si == 1) &&
922 (l2 != ISDN_PROTO_L2_MODEM)
923 #ifdef CONFIG_ISDN_TTY_FAX
924 && (l2 != ISDN_PROTO_L2_FAX)
925 #endif
926 ) {
927 l2 = ISDN_PROTO_L2_TRANS;
928 usg = ISDN_USAGE_VOICE;
929 }
930 #endif
931 m->mdmreg[REG_SI1I] = si2bit[si];
932 spin_lock_irqsave(&dev->lock, flags);
933 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
934 if (i < 0) {
935 spin_unlock_irqrestore(&dev->lock, flags);
936 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
937 } else {
938 info->isdn_driver = dev->drvmap[i];
939 info->isdn_channel = dev->chanmap[i];
940 info->drv_index = i;
941 dev->m_idx[i] = info->line;
942 dev->usage[i] |= ISDN_USAGE_OUTGOING;
943 info->last_dir = 1;
944 isdn_info_update();
945 spin_unlock_irqrestore(&dev->lock, flags);
946 cmd.driver = info->isdn_driver;
947 cmd.arg = info->isdn_channel;
948 cmd.command = ISDN_CMD_CLREAZ;
949 isdn_command(&cmd);
950 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
951 cmd.driver = info->isdn_driver;
952 cmd.command = ISDN_CMD_SETEAZ;
953 isdn_command(&cmd);
954 cmd.driver = info->isdn_driver;
955 cmd.command = ISDN_CMD_SETL2;
956 info->last_l2 = l2;
957 cmd.arg = info->isdn_channel + (l2 << 8);
958 isdn_command(&cmd);
959 cmd.driver = info->isdn_driver;
960 cmd.command = ISDN_CMD_SETL3;
961 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
962 isdn_command(&cmd);
963 cmd.driver = info->isdn_driver;
964 cmd.arg = info->isdn_channel;
965 cmd.parm.cmsg.Length = l + 14;
966 cmd.parm.cmsg.Command = CAPI_MANUFACTURER;
967 cmd.parm.cmsg.Subcommand = CAPI_REQ;
968 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
969 cmd.parm.cmsg.para[0] = l + 1;
970 strncpy(&cmd.parm.cmsg.para[1], msg, l);
971 cmd.parm.cmsg.para[l + 1] = 0xd;
972 cmd.command = CAPI_PUT_MESSAGE;
973 /* info->dialing = 1;
974 strcpy(dev->num[i], n);
975 isdn_info_update();
976 */
977 isdn_command(&cmd);
978 }
979 }
980
981 static inline int
982 isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine)
983 {
984 #ifdef MODEM_PARANOIA_CHECK
985 if (!info) {
986 printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n",
987 name, routine);
988 return 1;
989 }
990 if (info->magic != ISDN_ASYNC_MAGIC) {
991 printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n",
992 name, routine);
993 return 1;
994 }
995 #endif
996 return 0;
997 }
998
999 /*
1000 * This routine is called to set the UART divisor registers to match
1001 * the specified baud rate for a serial port.
1002 */
1003 static void
1004 isdn_tty_change_speed(modem_info *info)
1005 {
1006 struct tty_port *port = &info->port;
1007 uint cflag,
1008 cval,
1009 quot;
1010 int i;
1011
1012 if (!port->tty)
1013 return;
1014 cflag = port->tty->termios.c_cflag;
1015
1016 quot = i = cflag & CBAUD;
1017 if (i & CBAUDEX) {
1018 i &= ~CBAUDEX;
1019 if (i < 1 || i > 2)
1020 port->tty->termios.c_cflag &= ~CBAUDEX;
1021 else
1022 i += 15;
1023 }
1024 if (quot) {
1025 info->mcr |= UART_MCR_DTR;
1026 isdn_tty_modem_ncarrier(info);
1027 } else {
1028 info->mcr &= ~UART_MCR_DTR;
1029 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1030 #ifdef ISDN_DEBUG_MODEM_HUP
1031 printk(KERN_DEBUG "Mhup in changespeed\n");
1032 #endif
1033 if (info->online)
1034 info->ncarrier = 1;
1035 isdn_tty_modem_reset_regs(info, 0);
1036 isdn_tty_modem_hup(info, 1);
1037 }
1038 return;
1039 }
1040 /* byte size and parity */
1041 cval = cflag & (CSIZE | CSTOPB);
1042 cval >>= 4;
1043 if (cflag & PARENB)
1044 cval |= UART_LCR_PARITY;
1045 if (!(cflag & PARODD))
1046 cval |= UART_LCR_EPAR;
1047
1048 /* CTS flow control flag and modem status interrupts */
1049 if (cflag & CRTSCTS) {
1050 port->flags |= ASYNC_CTS_FLOW;
1051 } else
1052 port->flags &= ~ASYNC_CTS_FLOW;
1053 if (cflag & CLOCAL)
1054 port->flags &= ~ASYNC_CHECK_CD;
1055 else {
1056 port->flags |= ASYNC_CHECK_CD;
1057 }
1058 }
1059
1060 static int
1061 isdn_tty_startup(modem_info *info)
1062 {
1063 if (info->port.flags & ASYNC_INITIALIZED)
1064 return 0;
1065 isdn_lock_drivers();
1066 #ifdef ISDN_DEBUG_MODEM_OPEN
1067 printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line);
1068 #endif
1069 /*
1070 * Now, initialize the UART
1071 */
1072 info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
1073 if (info->port.tty)
1074 clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
1075 /*
1076 * and set the speed of the serial port
1077 */
1078 isdn_tty_change_speed(info);
1079
1080 info->port.flags |= ASYNC_INITIALIZED;
1081 info->msr |= (UART_MSR_DSR | UART_MSR_CTS);
1082 info->send_outstanding = 0;
1083 return 0;
1084 }
1085
1086 /*
1087 * This routine will shutdown a serial port; interrupts are disabled, and
1088 * DTR is dropped if the hangup on close termio flag is on.
1089 */
1090 static void
1091 isdn_tty_shutdown(modem_info *info)
1092 {
1093 if (!(info->port.flags & ASYNC_INITIALIZED))
1094 return;
1095 #ifdef ISDN_DEBUG_MODEM_OPEN
1096 printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line);
1097 #endif
1098 isdn_unlock_drivers();
1099 info->msr &= ~UART_MSR_RI;
1100 if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {
1101 info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
1102 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1103 isdn_tty_modem_reset_regs(info, 0);
1104 #ifdef ISDN_DEBUG_MODEM_HUP
1105 printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n");
1106 #endif
1107 isdn_tty_modem_hup(info, 1);
1108 }
1109 }
1110 if (info->port.tty)
1111 set_bit(TTY_IO_ERROR, &info->port.tty->flags);
1112
1113 info->port.flags &= ~ASYNC_INITIALIZED;
1114 }
1115
1116 /* isdn_tty_write() is the main send-routine. It is called from the upper
1117 * levels within the kernel to perform sending data. Depending on the
1118 * online-flag it either directs output to the at-command-interpreter or
1119 * to the lower level. Additional tasks done here:
1120 * - If online, check for escape-sequence (+++)
1121 * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes.
1122 * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed.
1123 * - If dialing, abort dial.
1124 */
1125 static int
1126 isdn_tty_write(struct tty_struct *tty, const u_char *buf, int count)
1127 {
1128 int c;
1129 int total = 0;
1130 modem_info *info = (modem_info *) tty->driver_data;
1131 atemu *m = &info->emu;
1132
1133 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write"))
1134 return 0;
1135 /* See isdn_tty_senddown() */
1136 atomic_inc(&info->xmit_lock);
1137 while (1) {
1138 c = count;
1139 if (c > info->xmit_size - info->xmit_count)
1140 c = info->xmit_size - info->xmit_count;
1141 if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize)
1142 c = dev->drv[info->isdn_driver]->maxbufsize;
1143 if (c <= 0)
1144 break;
1145 if ((info->online > 1)
1146 #ifdef CONFIG_ISDN_AUDIO
1147 || (info->vonline & 3)
1148 #endif
1149 ) {
1150 #ifdef CONFIG_ISDN_AUDIO
1151 if (!info->vonline)
1152 #endif
1153 isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c,
1154 &(m->pluscount),
1155 &(m->lastplus));
1156 memcpy(&info->port.xmit_buf[info->xmit_count], buf, c);
1157 #ifdef CONFIG_ISDN_AUDIO
1158 if (info->vonline) {
1159 int cc = isdn_tty_handleDLEdown(info, m, c);
1160 if (info->vonline & 2) {
1161 if (!cc) {
1162 /* If DLE decoding results in zero-transmit, but
1163 * c originally was non-zero, do a wakeup.
1164 */
1165 tty_wakeup(tty);
1166 info->msr |= UART_MSR_CTS;
1167 info->lsr |= UART_LSR_TEMT;
1168 }
1169 info->xmit_count += cc;
1170 }
1171 if ((info->vonline & 3) == 1) {
1172 /* Do NOT handle Ctrl-Q or Ctrl-S
1173 * when in full-duplex audio mode.
1174 */
1175 if (isdn_tty_end_vrx(buf, c)) {
1176 info->vonline &= ~1;
1177 #ifdef ISDN_DEBUG_MODEM_VOICE
1178 printk(KERN_DEBUG
1179 "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n",
1180 info->line);
1181 #endif
1182 isdn_tty_at_cout("\020\003\r\nVCON\r\n", info);
1183 }
1184 }
1185 } else
1186 if (TTY_IS_FCLASS1(info)) {
1187 int cc = isdn_tty_handleDLEdown(info, m, c);
1188
1189 if (info->vonline & 4) { /* ETX seen */
1190 isdn_ctrl c;
1191
1192 c.command = ISDN_CMD_FAXCMD;
1193 c.driver = info->isdn_driver;
1194 c.arg = info->isdn_channel;
1195 c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL;
1196 c.parm.aux.subcmd = ETX;
1197 isdn_command(&c);
1198 }
1199 info->vonline = 0;
1200 #ifdef ISDN_DEBUG_MODEM_VOICE
1201 printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c);
1202 #endif
1203 info->xmit_count += cc;
1204 } else
1205 #endif
1206 info->xmit_count += c;
1207 } else {
1208 info->msr |= UART_MSR_CTS;
1209 info->lsr |= UART_LSR_TEMT;
1210 if (info->dialing) {
1211 info->dialing = 0;
1212 #ifdef ISDN_DEBUG_MODEM_HUP
1213 printk(KERN_DEBUG "Mhup in isdn_tty_write\n");
1214 #endif
1215 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
1216 isdn_tty_modem_hup(info, 1);
1217 } else
1218 c = isdn_tty_edit_at(buf, c, info);
1219 }
1220 buf += c;
1221 count -= c;
1222 total += c;
1223 }
1224 atomic_dec(&info->xmit_lock);
1225 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
1226 if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
1227 isdn_tty_senddown(info);
1228 isdn_tty_tint(info);
1229 }
1230 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1231 }
1232 return total;
1233 }
1234
1235 static int
1236 isdn_tty_write_room(struct tty_struct *tty)
1237 {
1238 modem_info *info = (modem_info *) tty->driver_data;
1239 int ret;
1240
1241 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room"))
1242 return 0;
1243 if (!info->online)
1244 return info->xmit_size;
1245 ret = info->xmit_size - info->xmit_count;
1246 return (ret < 0) ? 0 : ret;
1247 }
1248
1249 static int
1250 isdn_tty_chars_in_buffer(struct tty_struct *tty)
1251 {
1252 modem_info *info = (modem_info *) tty->driver_data;
1253
1254 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer"))
1255 return 0;
1256 if (!info->online)
1257 return 0;
1258 return (info->xmit_count);
1259 }
1260
1261 static void
1262 isdn_tty_flush_buffer(struct tty_struct *tty)
1263 {
1264 modem_info *info;
1265
1266 if (!tty) {
1267 return;
1268 }
1269 info = (modem_info *) tty->driver_data;
1270 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) {
1271 return;
1272 }
1273 isdn_tty_cleanup_xmit(info);
1274 info->xmit_count = 0;
1275 tty_wakeup(tty);
1276 }
1277
1278 static void
1279 isdn_tty_flush_chars(struct tty_struct *tty)
1280 {
1281 modem_info *info = (modem_info *) tty->driver_data;
1282
1283 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
1284 return;
1285 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
1286 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1287 }
1288
1289 /*
1290 * ------------------------------------------------------------
1291 * isdn_tty_throttle()
1292 *
1293 * This routine is called by the upper-layer tty layer to signal that
1294 * incoming characters should be throttled.
1295 * ------------------------------------------------------------
1296 */
1297 static void
1298 isdn_tty_throttle(struct tty_struct *tty)
1299 {
1300 modem_info *info = (modem_info *) tty->driver_data;
1301
1302 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle"))
1303 return;
1304 if (I_IXOFF(tty))
1305 info->x_char = STOP_CHAR(tty);
1306 info->mcr &= ~UART_MCR_RTS;
1307 }
1308
1309 static void
1310 isdn_tty_unthrottle(struct tty_struct *tty)
1311 {
1312 modem_info *info = (modem_info *) tty->driver_data;
1313
1314 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle"))
1315 return;
1316 if (I_IXOFF(tty)) {
1317 if (info->x_char)
1318 info->x_char = 0;
1319 else
1320 info->x_char = START_CHAR(tty);
1321 }
1322 info->mcr |= UART_MCR_RTS;
1323 }
1324
1325 /*
1326 * ------------------------------------------------------------
1327 * isdn_tty_ioctl() and friends
1328 * ------------------------------------------------------------
1329 */
1330
1331 /*
1332 * isdn_tty_get_lsr_info - get line status register info
1333 *
1334 * Purpose: Let user call ioctl() to get info when the UART physically
1335 * is emptied. On bus types like RS485, the transmitter must
1336 * release the bus after transmitting. This must be done when
1337 * the transmit shift register is empty, not be done when the
1338 * transmit holding register is empty. This functionality
1339 * allows RS485 driver to be written in user space.
1340 */
1341 static int
1342 isdn_tty_get_lsr_info(modem_info *info, uint __user *value)
1343 {
1344 u_char status;
1345 uint result;
1346
1347 status = info->lsr;
1348 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1349 return put_user(result, value);
1350 }
1351
1352
1353 static int
1354 isdn_tty_tiocmget(struct tty_struct *tty)
1355 {
1356 modem_info *info = (modem_info *) tty->driver_data;
1357 u_char control, status;
1358
1359 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1360 return -ENODEV;
1361 if (tty->flags & (1 << TTY_IO_ERROR))
1362 return -EIO;
1363
1364 mutex_lock(&modem_info_mutex);
1365 #ifdef ISDN_DEBUG_MODEM_IOCTL
1366 printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
1367 #endif
1368
1369 control = info->mcr;
1370 status = info->msr;
1371 mutex_unlock(&modem_info_mutex);
1372 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
1373 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
1374 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
1375 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
1376 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
1377 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1378 }
1379
1380 static int
1381 isdn_tty_tiocmset(struct tty_struct *tty,
1382 unsigned int set, unsigned int clear)
1383 {
1384 modem_info *info = (modem_info *) tty->driver_data;
1385
1386 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1387 return -ENODEV;
1388 if (tty->flags & (1 << TTY_IO_ERROR))
1389 return -EIO;
1390
1391 #ifdef ISDN_DEBUG_MODEM_IOCTL
1392 printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
1393 #endif
1394
1395 mutex_lock(&modem_info_mutex);
1396 if (set & TIOCM_RTS)
1397 info->mcr |= UART_MCR_RTS;
1398 if (set & TIOCM_DTR) {
1399 info->mcr |= UART_MCR_DTR;
1400 isdn_tty_modem_ncarrier(info);
1401 }
1402
1403 if (clear & TIOCM_RTS)
1404 info->mcr &= ~UART_MCR_RTS;
1405 if (clear & TIOCM_DTR) {
1406 info->mcr &= ~UART_MCR_DTR;
1407 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1408 isdn_tty_modem_reset_regs(info, 0);
1409 #ifdef ISDN_DEBUG_MODEM_HUP
1410 printk(KERN_DEBUG "Mhup in TIOCMSET\n");
1411 #endif
1412 if (info->online)
1413 info->ncarrier = 1;
1414 isdn_tty_modem_hup(info, 1);
1415 }
1416 }
1417 mutex_unlock(&modem_info_mutex);
1418 return 0;
1419 }
1420
1421 static int
1422 isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg)
1423 {
1424 modem_info *info = (modem_info *) tty->driver_data;
1425 int retval;
1426
1427 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
1428 return -ENODEV;
1429 if (tty->flags & (1 << TTY_IO_ERROR))
1430 return -EIO;
1431 switch (cmd) {
1432 case TCSBRK: /* SVID version: non-zero arg --> no break */
1433 #ifdef ISDN_DEBUG_MODEM_IOCTL
1434 printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
1435 #endif
1436 retval = tty_check_change(tty);
1437 if (retval)
1438 return retval;
1439 tty_wait_until_sent(tty, 0);
1440 return 0;
1441 case TCSBRKP: /* support for POSIX tcsendbreak() */
1442 #ifdef ISDN_DEBUG_MODEM_IOCTL
1443 printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
1444 #endif
1445 retval = tty_check_change(tty);
1446 if (retval)
1447 return retval;
1448 tty_wait_until_sent(tty, 0);
1449 return 0;
1450 case TIOCSERGETLSR: /* Get line status register */
1451 #ifdef ISDN_DEBUG_MODEM_IOCTL
1452 printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
1453 #endif
1454 return isdn_tty_get_lsr_info(info, (uint __user *) arg);
1455 default:
1456 #ifdef ISDN_DEBUG_MODEM_IOCTL
1457 printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line);
1458 #endif
1459 return -ENOIOCTLCMD;
1460 }
1461 return 0;
1462 }
1463
1464 static void
1465 isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1466 {
1467 modem_info *info = (modem_info *) tty->driver_data;
1468
1469 if (!old_termios)
1470 isdn_tty_change_speed(info);
1471 else {
1472 if (tty->termios.c_cflag == old_termios->c_cflag &&
1473 tty->termios.c_ispeed == old_termios->c_ispeed &&
1474 tty->termios.c_ospeed == old_termios->c_ospeed)
1475 return;
1476 isdn_tty_change_speed(info);
1477 if ((old_termios->c_cflag & CRTSCTS) &&
1478 !(tty->termios.c_cflag & CRTSCTS))
1479 tty->hw_stopped = 0;
1480 }
1481 }
1482
1483 /*
1484 * ------------------------------------------------------------
1485 * isdn_tty_open() and friends
1486 * ------------------------------------------------------------
1487 */
1488
1489 static int isdn_tty_install(struct tty_driver *driver, struct tty_struct *tty)
1490 {
1491 modem_info *info = &dev->mdm.info[tty->index];
1492
1493 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1494 return -ENODEV;
1495
1496 tty->driver_data = info;
1497
1498 return tty_port_install(&info->port, driver, tty);
1499 }
1500
1501 /*
1502 * This routine is called whenever a serial port is opened. It
1503 * enables interrupts for a serial port, linking in its async structure into
1504 * the IRQ chain. It also performs the serial-specific
1505 * initialization for the tty structure.
1506 */
1507 static int
1508 isdn_tty_open(struct tty_struct *tty, struct file *filp)
1509 {
1510 modem_info *info = tty->driver_data;
1511 struct tty_port *port = &info->port;
1512 int retval;
1513
1514 #ifdef ISDN_DEBUG_MODEM_OPEN
1515 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
1516 port->count);
1517 #endif
1518 port->count++;
1519 port->tty = tty;
1520 /*
1521 * Start up serial port
1522 */
1523 retval = isdn_tty_startup(info);
1524 if (retval) {
1525 #ifdef ISDN_DEBUG_MODEM_OPEN
1526 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1527 #endif
1528 return retval;
1529 }
1530 retval = tty_port_block_til_ready(port, tty, filp);
1531 if (retval) {
1532 #ifdef ISDN_DEBUG_MODEM_OPEN
1533 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1534 #endif
1535 return retval;
1536 }
1537 #ifdef ISDN_DEBUG_MODEM_OPEN
1538 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1539 #endif
1540 dev->modempoll++;
1541 #ifdef ISDN_DEBUG_MODEM_OPEN
1542 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1543 #endif
1544 return 0;
1545 }
1546
1547 static void
1548 isdn_tty_close(struct tty_struct *tty, struct file *filp)
1549 {
1550 modem_info *info = (modem_info *) tty->driver_data;
1551 struct tty_port *port = &info->port;
1552 ulong timeout;
1553
1554 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1555 return;
1556 if (tty_hung_up_p(filp)) {
1557 #ifdef ISDN_DEBUG_MODEM_OPEN
1558 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1559 #endif
1560 return;
1561 }
1562 if ((tty->count == 1) && (port->count != 1)) {
1563 /*
1564 * Uh, oh. tty->count is 1, which means that the tty
1565 * structure will be freed. Info->count should always
1566 * be one in these conditions. If it's greater than
1567 * one, we've got real problems, since it means the
1568 * serial port won't be shutdown.
1569 */
1570 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
1571 "info->count is %d\n", port->count);
1572 port->count = 1;
1573 }
1574 if (--port->count < 0) {
1575 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
1576 info->line, port->count);
1577 port->count = 0;
1578 }
1579 if (port->count) {
1580 #ifdef ISDN_DEBUG_MODEM_OPEN
1581 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1582 #endif
1583 return;
1584 }
1585 port->flags |= ASYNC_CLOSING;
1586
1587 tty->closing = 1;
1588 /*
1589 * At this point we stop accepting input. To do this, we
1590 * disable the receive line status interrupts, and tell the
1591 * interrupt driver to stop checking the data ready bit in the
1592 * line status register.
1593 */
1594 if (port->flags & ASYNC_INITIALIZED) {
1595 tty_wait_until_sent_from_close(tty, 3000); /* 30 seconds timeout */
1596 /*
1597 * Before we drop DTR, make sure the UART transmitter
1598 * has completely drained; this is especially
1599 * important if there is a transmit FIFO!
1600 */
1601 timeout = jiffies + HZ;
1602 while (!(info->lsr & UART_LSR_TEMT)) {
1603 schedule_timeout_interruptible(20);
1604 if (time_after(jiffies, timeout))
1605 break;
1606 }
1607 }
1608 dev->modempoll--;
1609 isdn_tty_shutdown(info);
1610 isdn_tty_flush_buffer(tty);
1611 tty_ldisc_flush(tty);
1612 port->tty = NULL;
1613 info->ncarrier = 0;
1614
1615 tty_port_close_end(port, tty);
1616 #ifdef ISDN_DEBUG_MODEM_OPEN
1617 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1618 #endif
1619 }
1620
1621 /*
1622 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1623 */
1624 static void
1625 isdn_tty_hangup(struct tty_struct *tty)
1626 {
1627 modem_info *info = (modem_info *) tty->driver_data;
1628 struct tty_port *port = &info->port;
1629
1630 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1631 return;
1632 isdn_tty_shutdown(info);
1633 port->count = 0;
1634 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1635 port->tty = NULL;
1636 wake_up_interruptible(&port->open_wait);
1637 }
1638
1639 /* This routine initializes all emulator-data.
1640 */
1641 static void
1642 isdn_tty_reset_profile(atemu *m)
1643 {
1644 m->profile[0] = 0;
1645 m->profile[1] = 0;
1646 m->profile[2] = 43;
1647 m->profile[3] = 13;
1648 m->profile[4] = 10;
1649 m->profile[5] = 8;
1650 m->profile[6] = 3;
1651 m->profile[7] = 60;
1652 m->profile[8] = 2;
1653 m->profile[9] = 6;
1654 m->profile[10] = 7;
1655 m->profile[11] = 70;
1656 m->profile[12] = 0x45;
1657 m->profile[13] = 4;
1658 m->profile[14] = ISDN_PROTO_L2_X75I;
1659 m->profile[15] = ISDN_PROTO_L3_TRANS;
1660 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1661 m->profile[17] = ISDN_MODEM_WINSIZE;
1662 m->profile[18] = 4;
1663 m->profile[19] = 0;
1664 m->profile[20] = 0;
1665 m->profile[23] = 0;
1666 m->pmsn[0] = '\0';
1667 m->plmsn[0] = '\0';
1668 }
1669
1670 #ifdef CONFIG_ISDN_AUDIO
1671 static void
1672 isdn_tty_modem_reset_vpar(atemu *m)
1673 {
1674 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1675 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1676 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1677 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1678 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1679 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1680 }
1681 #endif
1682
1683 #ifdef CONFIG_ISDN_TTY_FAX
1684 static void
1685 isdn_tty_modem_reset_faxpar(modem_info *info)
1686 {
1687 T30_s *f = info->fax;
1688
1689 f->code = 0;
1690 f->phase = ISDN_FAX_PHASE_IDLE;
1691 f->direction = 0;
1692 f->resolution = 1; /* fine */
1693 f->rate = 5; /* 14400 bit/s */
1694 f->width = 0;
1695 f->length = 0;
1696 f->compression = 0;
1697 f->ecm = 0;
1698 f->binary = 0;
1699 f->scantime = 0;
1700 memset(&f->id[0], 32, FAXIDLEN - 1);
1701 f->id[FAXIDLEN - 1] = 0;
1702 f->badlin = 0;
1703 f->badmul = 0;
1704 f->bor = 0;
1705 f->nbc = 0;
1706 f->cq = 0;
1707 f->cr = 0;
1708 f->ctcrty = 0;
1709 f->minsp = 0;
1710 f->phcto = 30;
1711 f->rel = 0;
1712 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1713 f->pollid[FAXIDLEN - 1] = 0;
1714 }
1715 #endif
1716
1717 static void
1718 isdn_tty_modem_reset_regs(modem_info *info, int force)
1719 {
1720 atemu *m = &info->emu;
1721 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1722 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1723 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1724 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1725 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1726 }
1727 #ifdef CONFIG_ISDN_AUDIO
1728 isdn_tty_modem_reset_vpar(m);
1729 #endif
1730 #ifdef CONFIG_ISDN_TTY_FAX
1731 isdn_tty_modem_reset_faxpar(info);
1732 #endif
1733 m->mdmcmdl = 0;
1734 }
1735
1736 static void
1737 modem_write_profile(atemu *m)
1738 {
1739 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1740 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1741 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1742 if (dev->profd)
1743 send_sig(SIGIO, dev->profd, 1);
1744 }
1745
1746 static const struct tty_operations modem_ops = {
1747 .install = isdn_tty_install,
1748 .open = isdn_tty_open,
1749 .close = isdn_tty_close,
1750 .write = isdn_tty_write,
1751 .flush_chars = isdn_tty_flush_chars,
1752 .write_room = isdn_tty_write_room,
1753 .chars_in_buffer = isdn_tty_chars_in_buffer,
1754 .flush_buffer = isdn_tty_flush_buffer,
1755 .ioctl = isdn_tty_ioctl,
1756 .throttle = isdn_tty_throttle,
1757 .unthrottle = isdn_tty_unthrottle,
1758 .set_termios = isdn_tty_set_termios,
1759 .hangup = isdn_tty_hangup,
1760 .tiocmget = isdn_tty_tiocmget,
1761 .tiocmset = isdn_tty_tiocmset,
1762 };
1763
1764 static int isdn_tty_carrier_raised(struct tty_port *port)
1765 {
1766 modem_info *info = container_of(port, modem_info, port);
1767 return info->msr & UART_MSR_DCD;
1768 }
1769
1770 static const struct tty_port_operations isdn_tty_port_ops = {
1771 .carrier_raised = isdn_tty_carrier_raised,
1772 };
1773
1774 int
1775 isdn_tty_modem_init(void)
1776 {
1777 isdn_modem_t *m;
1778 int i, retval;
1779 modem_info *info;
1780
1781 m = &dev->mdm;
1782 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1783 if (!m->tty_modem)
1784 return -ENOMEM;
1785 m->tty_modem->name = "ttyI";
1786 m->tty_modem->major = ISDN_TTY_MAJOR;
1787 m->tty_modem->minor_start = 0;
1788 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1789 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1790 m->tty_modem->init_termios = tty_std_termios;
1791 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
1792 m->tty_modem->flags = TTY_DRIVER_REAL_RAW;
1793 m->tty_modem->driver_name = "isdn_tty";
1794 tty_set_operations(m->tty_modem, &modem_ops);
1795 retval = tty_register_driver(m->tty_modem);
1796 if (retval) {
1797 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1798 goto err;
1799 }
1800 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1801 info = &m->info[i];
1802 #ifdef CONFIG_ISDN_TTY_FAX
1803 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1804 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1805 retval = -ENOMEM;
1806 goto err_unregister;
1807 }
1808 #endif
1809 tty_port_init(&info->port);
1810 info->port.ops = &isdn_tty_port_ops;
1811 spin_lock_init(&info->readlock);
1812 sprintf(info->last_cause, "0000");
1813 sprintf(info->last_num, "none");
1814 info->last_dir = 0;
1815 info->last_lhup = 1;
1816 info->last_l2 = -1;
1817 info->last_si = 0;
1818 isdn_tty_reset_profile(&info->emu);
1819 isdn_tty_modem_reset_regs(info, 1);
1820 info->magic = ISDN_ASYNC_MAGIC;
1821 info->line = i;
1822 info->x_char = 0;
1823 info->isdn_driver = -1;
1824 info->isdn_channel = -1;
1825 info->drv_index = -1;
1826 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1827 init_timer(&info->nc_timer);
1828 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1829 info->nc_timer.data = (unsigned long) info;
1830 skb_queue_head_init(&info->xmit_queue);
1831 #ifdef CONFIG_ISDN_AUDIO
1832 skb_queue_head_init(&info->dtmf_queue);
1833 #endif
1834 info->port.xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5,
1835 GFP_KERNEL);
1836 if (!info->port.xmit_buf) {
1837 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1838 retval = -ENOMEM;
1839 goto err_unregister;
1840 }
1841 /* Make room for T.70 header */
1842 info->port.xmit_buf += 4;
1843 }
1844 return 0;
1845 err_unregister:
1846 for (i--; i >= 0; i--) {
1847 info = &m->info[i];
1848 #ifdef CONFIG_ISDN_TTY_FAX
1849 kfree(info->fax);
1850 #endif
1851 kfree(info->port.xmit_buf - 4);
1852 info->port.xmit_buf = NULL;
1853 tty_port_destroy(&info->port);
1854 }
1855 tty_unregister_driver(m->tty_modem);
1856 err:
1857 put_tty_driver(m->tty_modem);
1858 m->tty_modem = NULL;
1859 return retval;
1860 }
1861
1862 void
1863 isdn_tty_exit(void)
1864 {
1865 modem_info *info;
1866 int i;
1867
1868 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1869 info = &dev->mdm.info[i];
1870 isdn_tty_cleanup_xmit(info);
1871 #ifdef CONFIG_ISDN_TTY_FAX
1872 kfree(info->fax);
1873 #endif
1874 kfree(info->port.xmit_buf - 4);
1875 info->port.xmit_buf = NULL;
1876 tty_port_destroy(&info->port);
1877 }
1878 tty_unregister_driver(dev->mdm.tty_modem);
1879 put_tty_driver(dev->mdm.tty_modem);
1880 dev->mdm.tty_modem = NULL;
1881 }
1882
1883
1884 /*
1885 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1886 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1887 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1888 */
1889
1890 static int
1891 isdn_tty_match_icall(char *cid, atemu *emu, int di)
1892 {
1893 #ifdef ISDN_DEBUG_MODEM_ICALL
1894 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1895 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1896 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1897 #endif
1898 if (strlen(emu->lmsn)) {
1899 char *p = emu->lmsn;
1900 char *q;
1901 int tmp;
1902 int ret = 0;
1903
1904 while (1) {
1905 if ((q = strchr(p, ';')))
1906 *q = '\0';
1907 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
1908 ret = tmp;
1909 #ifdef ISDN_DEBUG_MODEM_ICALL
1910 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
1911 p, isdn_map_eaz2msn(emu->msn, di), tmp);
1912 #endif
1913 if (q) {
1914 *q = ';';
1915 p = q;
1916 p++;
1917 }
1918 if (!tmp)
1919 return 0;
1920 if (!q)
1921 break;
1922 }
1923 return ret;
1924 } else {
1925 int tmp;
1926 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
1927 #ifdef ISDN_DEBUG_MODEM_ICALL
1928 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
1929 isdn_map_eaz2msn(emu->msn, di), tmp);
1930 #endif
1931 return tmp;
1932 }
1933 }
1934
1935 /*
1936 * An incoming call-request has arrived.
1937 * Search the tty-devices for an appropriate device and bind
1938 * it to the ISDN-Channel.
1939 * Return:
1940 *
1941 * 0 = No matching device found.
1942 * 1 = A matching device found.
1943 * 3 = No match found, but eventually would match, if
1944 * CID is longer.
1945 */
1946 int
1947 isdn_tty_find_icall(int di, int ch, setup_parm *setup)
1948 {
1949 char *eaz;
1950 int i;
1951 int wret;
1952 int idx;
1953 int si1;
1954 int si2;
1955 char *nr;
1956 ulong flags;
1957
1958 if (!setup->phone[0]) {
1959 nr = "0";
1960 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
1961 } else
1962 nr = setup->phone;
1963 si1 = (int) setup->si1;
1964 si2 = (int) setup->si2;
1965 if (!setup->eazmsn[0]) {
1966 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
1967 eaz = "0";
1968 } else
1969 eaz = setup->eazmsn;
1970 #ifdef ISDN_DEBUG_MODEM_ICALL
1971 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
1972 #endif
1973 wret = 0;
1974 spin_lock_irqsave(&dev->lock, flags);
1975 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1976 modem_info *info = &dev->mdm.info[i];
1977
1978 if (info->port.count == 0)
1979 continue;
1980 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
1981 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
1982 idx = isdn_dc2minor(di, ch);
1983 #ifdef ISDN_DEBUG_MODEM_ICALL
1984 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
1985 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
1986 info->port.flags, info->isdn_driver,
1987 info->isdn_channel, dev->usage[idx]);
1988 #endif
1989 if (
1990 #ifndef FIX_FILE_TRANSFER
1991 (info->port.flags & ASYNC_NORMAL_ACTIVE) &&
1992 #endif
1993 (info->isdn_driver == -1) &&
1994 (info->isdn_channel == -1) &&
1995 (USG_NONE(dev->usage[idx]))) {
1996 int matchret;
1997
1998 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
1999 wret = matchret;
2000 if (!matchret) { /* EAZ is matching */
2001 info->isdn_driver = di;
2002 info->isdn_channel = ch;
2003 info->drv_index = idx;
2004 dev->m_idx[idx] = info->line;
2005 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
2006 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
2007 strcpy(dev->num[idx], nr);
2008 strcpy(info->emu.cpn, eaz);
2009 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
2010 info->emu.mdmreg[REG_PLAN] = setup->plan;
2011 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2012 isdn_info_update();
2013 spin_unlock_irqrestore(&dev->lock, flags);
2014 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2015 info->line);
2016 info->msr |= UART_MSR_RI;
2017 isdn_tty_modem_result(RESULT_RING, info);
2018 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2019 return 1;
2020 }
2021 }
2022 }
2023 }
2024 spin_unlock_irqrestore(&dev->lock, flags);
2025 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
2026 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2)) ? "rejected" : "ignored");
2027 return (wret == 2) ? 3 : 0;
2028 }
2029
2030 #define TTY_IS_ACTIVE(info) (info->port.flags & ASYNC_NORMAL_ACTIVE)
2031
2032 int
2033 isdn_tty_stat_callback(int i, isdn_ctrl *c)
2034 {
2035 int mi;
2036 modem_info *info;
2037 char *e;
2038
2039 if (i < 0)
2040 return 0;
2041 if ((mi = dev->m_idx[i]) >= 0) {
2042 info = &dev->mdm.info[mi];
2043 switch (c->command) {
2044 case ISDN_STAT_CINF:
2045 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2046 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2047 if (e == (char *)c->parm.num)
2048 info->emu.charge = 0;
2049
2050 break;
2051 case ISDN_STAT_BSENT:
2052 #ifdef ISDN_TTY_STAT_DEBUG
2053 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
2054 #endif
2055 if ((info->isdn_driver == c->driver) &&
2056 (info->isdn_channel == c->arg)) {
2057 info->msr |= UART_MSR_CTS;
2058 if (info->send_outstanding)
2059 if (!(--info->send_outstanding))
2060 info->lsr |= UART_LSR_TEMT;
2061 isdn_tty_tint(info);
2062 return 1;
2063 }
2064 break;
2065 case ISDN_STAT_CAUSE:
2066 #ifdef ISDN_TTY_STAT_DEBUG
2067 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2068 #endif
2069 /* Signal cause to tty-device */
2070 strncpy(info->last_cause, c->parm.num, 5);
2071 return 1;
2072 case ISDN_STAT_DISPLAY:
2073 #ifdef ISDN_TTY_STAT_DEBUG
2074 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
2075 #endif
2076 /* Signal display to tty-device */
2077 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2078 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2079 isdn_tty_at_cout("\r\n", info);
2080 isdn_tty_at_cout("DISPLAY: ", info);
2081 isdn_tty_at_cout(c->parm.display, info);
2082 isdn_tty_at_cout("\r\n", info);
2083 }
2084 return 1;
2085 case ISDN_STAT_DCONN:
2086 #ifdef ISDN_TTY_STAT_DEBUG
2087 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2088 #endif
2089 if (TTY_IS_ACTIVE(info)) {
2090 if (info->dialing == 1) {
2091 info->dialing = 2;
2092 return 1;
2093 }
2094 }
2095 break;
2096 case ISDN_STAT_DHUP:
2097 #ifdef ISDN_TTY_STAT_DEBUG
2098 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
2099 #endif
2100 if (TTY_IS_ACTIVE(info)) {
2101 if (info->dialing == 1)
2102 isdn_tty_modem_result(RESULT_BUSY, info);
2103 if (info->dialing > 1)
2104 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2105 info->dialing = 0;
2106 #ifdef ISDN_DEBUG_MODEM_HUP
2107 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
2108 #endif
2109 isdn_tty_modem_hup(info, 0);
2110 return 1;
2111 }
2112 break;
2113 case ISDN_STAT_BCONN:
2114 #ifdef ISDN_TTY_STAT_DEBUG
2115 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2116 #endif
2117 /* Wake up any processes waiting
2118 * for incoming call of this device when
2119 * DCD follow the state of incoming carrier
2120 */
2121 if (info->port.blocked_open &&
2122 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
2123 wake_up_interruptible(&info->port.open_wait);
2124 }
2125
2126 /* Schedule CONNECT-Message to any tty
2127 * waiting for it and
2128 * set DCD-bit of its modem-status.
2129 */
2130 if (TTY_IS_ACTIVE(info) ||
2131 (info->port.blocked_open &&
2132 (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
2133 info->msr |= UART_MSR_DCD;
2134 info->emu.charge = 0;
2135 if (info->dialing & 0xf)
2136 info->last_dir = 1;
2137 else
2138 info->last_dir = 0;
2139 info->dialing = 0;
2140 info->rcvsched = 1;
2141 if (USG_MODEM(dev->usage[i])) {
2142 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2143 strcpy(info->emu.connmsg, c->parm.num);
2144 isdn_tty_modem_result(RESULT_CONNECT, info);
2145 } else
2146 isdn_tty_modem_result(RESULT_CONNECT64000, info);
2147 }
2148 if (USG_VOICE(dev->usage[i]))
2149 isdn_tty_modem_result(RESULT_VCON, info);
2150 return 1;
2151 }
2152 break;
2153 case ISDN_STAT_BHUP:
2154 #ifdef ISDN_TTY_STAT_DEBUG
2155 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
2156 #endif
2157 if (TTY_IS_ACTIVE(info)) {
2158 #ifdef ISDN_DEBUG_MODEM_HUP
2159 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
2160 #endif
2161 isdn_tty_modem_hup(info, 0);
2162 return 1;
2163 }
2164 break;
2165 case ISDN_STAT_NODCH:
2166 #ifdef ISDN_TTY_STAT_DEBUG
2167 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2168 #endif
2169 if (TTY_IS_ACTIVE(info)) {
2170 if (info->dialing) {
2171 info->dialing = 0;
2172 info->last_l2 = -1;
2173 info->last_si = 0;
2174 sprintf(info->last_cause, "0000");
2175 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
2176 }
2177 isdn_tty_modem_hup(info, 0);
2178 return 1;
2179 }
2180 break;
2181 case ISDN_STAT_UNLOAD:
2182 #ifdef ISDN_TTY_STAT_DEBUG
2183 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
2184 #endif
2185 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2186 info = &dev->mdm.info[i];
2187 if (info->isdn_driver == c->driver) {
2188 if (info->online)
2189 isdn_tty_modem_hup(info, 1);
2190 }
2191 }
2192 return 1;
2193 #ifdef CONFIG_ISDN_TTY_FAX
2194 case ISDN_STAT_FAXIND:
2195 if (TTY_IS_ACTIVE(info)) {
2196 isdn_tty_fax_command(info, c);
2197 }
2198 break;
2199 #endif
2200 #ifdef CONFIG_ISDN_AUDIO
2201 case ISDN_STAT_AUDIO:
2202 if (TTY_IS_ACTIVE(info)) {
2203 switch (c->parm.num[0]) {
2204 case ISDN_AUDIO_DTMF:
2205 if (info->vonline) {
2206 isdn_audio_put_dle_code(info,
2207 c->parm.num[1]);
2208 }
2209 break;
2210 }
2211 }
2212 break;
2213 #endif
2214 }
2215 }
2216 return 0;
2217 }
2218
2219 /*********************************************************************
2220 Modem-Emulator-Routines
2221 *********************************************************************/
2222
2223 #define cmdchar(c) ((c >= ' ') && (c <= 0x7f))
2224
2225 /*
2226 * Put a message from the AT-emulator into receive-buffer of tty,
2227 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2228 */
2229 void
2230 isdn_tty_at_cout(char *msg, modem_info *info)
2231 {
2232 struct tty_struct *tty;
2233 atemu *m = &info->emu;
2234 char *p;
2235 char c;
2236 u_long flags;
2237 struct sk_buff *skb = NULL;
2238 char *sp = NULL;
2239 int l;
2240
2241 if (!msg) {
2242 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2243 return;
2244 }
2245
2246 l = strlen(msg);
2247
2248 spin_lock_irqsave(&info->readlock, flags);
2249 tty = info->port.tty;
2250 if ((info->port.flags & ASYNC_CLOSING) || (!tty)) {
2251 spin_unlock_irqrestore(&info->readlock, flags);
2252 return;
2253 }
2254
2255 /* use queue instead of direct, if online and */
2256 /* data is in queue or buffer is full */
2257 if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
2258 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
2259 skb = alloc_skb(l, GFP_ATOMIC);
2260 if (!skb) {
2261 spin_unlock_irqrestore(&info->readlock, flags);
2262 return;
2263 }
2264 sp = skb_put(skb, l);
2265 #ifdef CONFIG_ISDN_AUDIO
2266 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2267 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2268 #endif
2269 }
2270
2271 for (p = msg; *p; p++) {
2272 switch (*p) {
2273 case '\r':
2274 c = m->mdmreg[REG_CR];
2275 break;
2276 case '\n':
2277 c = m->mdmreg[REG_LF];
2278 break;
2279 case '\b':
2280 c = m->mdmreg[REG_BS];
2281 break;
2282 default:
2283 c = *p;
2284 }
2285 if (skb) {
2286 *sp++ = c;
2287 } else {
2288 if (tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
2289 break;
2290 }
2291 }
2292 if (skb) {
2293 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2294 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2295 spin_unlock_irqrestore(&info->readlock, flags);
2296 /* Schedule dequeuing */
2297 if (dev->modempoll && info->rcvsched)
2298 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2299
2300 } else {
2301 spin_unlock_irqrestore(&info->readlock, flags);
2302 tty_flip_buffer_push(tty);
2303 }
2304 }
2305
2306 /*
2307 * Perform ATH Hangup
2308 */
2309 static void
2310 isdn_tty_on_hook(modem_info *info)
2311 {
2312 if (info->isdn_channel >= 0) {
2313 #ifdef ISDN_DEBUG_MODEM_HUP
2314 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2315 #endif
2316 isdn_tty_modem_hup(info, 1);
2317 }
2318 }
2319
2320 static void
2321 isdn_tty_off_hook(void)
2322 {
2323 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2324 }
2325
2326 #define PLUSWAIT1 (HZ / 2) /* 0.5 sec. */
2327 #define PLUSWAIT2 (HZ * 3 / 2) /* 1.5 sec */
2328
2329 /*
2330 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2331 * isdn_tty_modem_escape() if sequence found.
2332 *
2333 * Parameters:
2334 * p pointer to databuffer
2335 * plus escape-character
2336 * count length of buffer
2337 * pluscount count of valid escape-characters so far
2338 * lastplus timestamp of last character
2339 */
2340 static void
2341 isdn_tty_check_esc(const u_char *p, u_char plus, int count, int *pluscount,
2342 u_long *lastplus)
2343 {
2344 if (plus > 127)
2345 return;
2346 if (count > 3) {
2347 p += count - 3;
2348 count = 3;
2349 *pluscount = 0;
2350 }
2351 while (count > 0) {
2352 if (*(p++) == plus) {
2353 if ((*pluscount)++) {
2354 /* Time since last '+' > 0.5 sec. ? */
2355 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2356 *pluscount = 1;
2357 } else {
2358 /* Time since last non-'+' < 1.5 sec. ? */
2359 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2360 *pluscount = 0;
2361 }
2362 if ((*pluscount == 3) && (count == 1))
2363 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2364 if (*pluscount > 3)
2365 *pluscount = 1;
2366 } else
2367 *pluscount = 0;
2368 *lastplus = jiffies;
2369 count--;
2370 }
2371 }
2372
2373 /*
2374 * Return result of AT-emulator to tty-receive-buffer, depending on
2375 * modem-register 12, bit 0 and 1.
2376 * For CONNECT-messages also switch to online-mode.
2377 * For RING-message handle auto-ATA if register 0 != 0
2378 */
2379
2380 static void
2381 isdn_tty_modem_result(int code, modem_info *info)
2382 {
2383 atemu *m = &info->emu;
2384 static char *msg[] =
2385 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2386 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2387 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2388 char s[ISDN_MSNLEN + 10];
2389
2390 switch (code) {
2391 case RESULT_RING:
2392 m->mdmreg[REG_RINGCNT]++;
2393 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2394 /* Automatically accept incoming call */
2395 isdn_tty_cmd_ATA(info);
2396 break;
2397 case RESULT_NO_CARRIER:
2398 #ifdef ISDN_DEBUG_MODEM_HUP
2399 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
2400 (info->port.flags & ASYNC_CLOSING),
2401 (!info->port.tty));
2402 #endif
2403 m->mdmreg[REG_RINGCNT] = 0;
2404 del_timer(&info->nc_timer);
2405 info->ncarrier = 0;
2406 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
2407 return;
2408
2409 #ifdef CONFIG_ISDN_AUDIO
2410 if (info->vonline & 1) {
2411 #ifdef ISDN_DEBUG_MODEM_VOICE
2412 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2413 info->line);
2414 #endif
2415 /* voice-recording, add DLE-ETX */
2416 isdn_tty_at_cout("\020\003", info);
2417 }
2418 if (info->vonline & 2) {
2419 #ifdef ISDN_DEBUG_MODEM_VOICE
2420 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2421 info->line);
2422 #endif
2423 /* voice-playing, add DLE-DC4 */
2424 isdn_tty_at_cout("\020\024", info);
2425 }
2426 #endif
2427 break;
2428 case RESULT_CONNECT:
2429 case RESULT_CONNECT64000:
2430 sprintf(info->last_cause, "0000");
2431 if (!info->online)
2432 info->online = 2;
2433 break;
2434 case RESULT_VCON:
2435 #ifdef ISDN_DEBUG_MODEM_VOICE
2436 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2437 info->line);
2438 #endif
2439 sprintf(info->last_cause, "0000");
2440 if (!info->online)
2441 info->online = 1;
2442 break;
2443 } /* switch (code) */
2444
2445 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2446 /* Show results */
2447 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2448 /* Show numeric results only */
2449 sprintf(s, "\r\n%d\r\n", code);
2450 isdn_tty_at_cout(s, info);
2451 } else {
2452 if (code == RESULT_RING) {
2453 /* return if "show RUNG" and ringcounter>1 */
2454 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
2455 (m->mdmreg[REG_RINGCNT] > 1))
2456 return;
2457 /* print CID, _before_ _every_ ring */
2458 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2459 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2460 isdn_tty_at_cout(dev->num[info->drv_index], info);
2461 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2462 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2463 isdn_tty_at_cout(info->emu.cpn, info);
2464 }
2465 }
2466 }
2467 isdn_tty_at_cout("\r\n", info);
2468 isdn_tty_at_cout(msg[code], info);
2469 switch (code) {
2470 case RESULT_CONNECT:
2471 switch (m->mdmreg[REG_L2PROT]) {
2472 case ISDN_PROTO_L2_MODEM:
2473 isdn_tty_at_cout(" ", info);
2474 isdn_tty_at_cout(m->connmsg, info);
2475 break;
2476 }
2477 break;
2478 case RESULT_RING:
2479 /* Append CPN, if enabled */
2480 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2481 sprintf(s, "/%s", m->cpn);
2482 isdn_tty_at_cout(s, info);
2483 }
2484 /* Print CID only once, _after_ 1st RING */
2485 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2486 (m->mdmreg[REG_RINGCNT] == 1)) {
2487 isdn_tty_at_cout("\r\n", info);
2488 isdn_tty_at_cout("CALLER NUMBER: ", info);
2489 isdn_tty_at_cout(dev->num[info->drv_index], info);
2490 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2491 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2492 isdn_tty_at_cout(info->emu.cpn, info);
2493 }
2494 }
2495 break;
2496 case RESULT_NO_CARRIER:
2497 case RESULT_NO_DIALTONE:
2498 case RESULT_BUSY:
2499 case RESULT_NO_ANSWER:
2500 m->mdmreg[REG_RINGCNT] = 0;
2501 /* Append Cause-Message if enabled */
2502 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2503 sprintf(s, "/%s", info->last_cause);
2504 isdn_tty_at_cout(s, info);
2505 }
2506 break;
2507 case RESULT_CONNECT64000:
2508 /* Append Protocol to CONNECT message */
2509 switch (m->mdmreg[REG_L2PROT]) {
2510 case ISDN_PROTO_L2_X75I:
2511 case ISDN_PROTO_L2_X75UI:
2512 case ISDN_PROTO_L2_X75BUI:
2513 isdn_tty_at_cout("/X.75", info);
2514 break;
2515 case ISDN_PROTO_L2_HDLC:
2516 isdn_tty_at_cout("/HDLC", info);
2517 break;
2518 case ISDN_PROTO_L2_V11096:
2519 isdn_tty_at_cout("/V110/9600", info);
2520 break;
2521 case ISDN_PROTO_L2_V11019:
2522 isdn_tty_at_cout("/V110/19200", info);
2523 break;
2524 case ISDN_PROTO_L2_V11038:
2525 isdn_tty_at_cout("/V110/38400", info);
2526 break;
2527 }
2528 if (m->mdmreg[REG_T70] & BIT_T70) {
2529 isdn_tty_at_cout("/T.70", info);
2530 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2531 isdn_tty_at_cout("+", info);
2532 }
2533 break;
2534 }
2535 isdn_tty_at_cout("\r\n", info);
2536 }
2537 }
2538 if (code == RESULT_NO_CARRIER) {
2539 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
2540 return;
2541
2542 if (info->port.flags & ASYNC_CHECK_CD)
2543 tty_hangup(info->port.tty);
2544 }
2545 }
2546
2547
2548 /*
2549 * Display a modem-register-value.
2550 */
2551 static void
2552 isdn_tty_show_profile(int ridx, modem_info *info)
2553 {
2554 char v[6];
2555
2556 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2557 isdn_tty_at_cout(v, info);
2558 }
2559
2560 /*
2561 * Get MSN-string from char-pointer, set pointer to end of number
2562 */
2563 static void
2564 isdn_tty_get_msnstr(char *n, char **p)
2565 {
2566 int limit = ISDN_MSNLEN - 1;
2567
2568 while (((*p[0] >= '0' && *p[0] <= '9') ||
2569 /* Why a comma ??? */
2570 (*p[0] == ',') || (*p[0] == ':')) &&
2571 (limit--))
2572 *n++ = *p[0]++;
2573 *n = '\0';
2574 }
2575
2576 /*
2577 * Get phone-number from modem-commandbuffer
2578 */
2579 static void
2580 isdn_tty_getdial(char *p, char *q, int cnt)
2581 {
2582 int first = 1;
2583 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
2584 buffer overflow */
2585
2586 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt > 0) {
2587 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
2588 ((*p == 'R') && first) ||
2589 (*p == '*') || (*p == '#')) {
2590 *q++ = *p;
2591 limit--;
2592 }
2593 if (!limit)
2594 break;
2595 p++;
2596 first = 0;
2597 }
2598 *q = 0;
2599 }
2600
2601 #define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2602 #define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2603
2604 static void
2605 isdn_tty_report(modem_info *info)
2606 {
2607 atemu *m = &info->emu;
2608 char s[80];
2609
2610 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2611 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2612 isdn_tty_at_cout(s, info);
2613 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2614 isdn_tty_at_cout(s, info);
2615 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2616 switch (info->last_l2) {
2617 case ISDN_PROTO_L2_X75I:
2618 isdn_tty_at_cout("X.75i", info);
2619 break;
2620 case ISDN_PROTO_L2_X75UI:
2621 isdn_tty_at_cout("X.75ui", info);
2622 break;
2623 case ISDN_PROTO_L2_X75BUI:
2624 isdn_tty_at_cout("X.75bui", info);
2625 break;
2626 case ISDN_PROTO_L2_HDLC:
2627 isdn_tty_at_cout("HDLC", info);
2628 break;
2629 case ISDN_PROTO_L2_V11096:
2630 isdn_tty_at_cout("V.110 9600 Baud", info);
2631 break;
2632 case ISDN_PROTO_L2_V11019:
2633 isdn_tty_at_cout("V.110 19200 Baud", info);
2634 break;
2635 case ISDN_PROTO_L2_V11038:
2636 isdn_tty_at_cout("V.110 38400 Baud", info);
2637 break;
2638 case ISDN_PROTO_L2_TRANS:
2639 isdn_tty_at_cout("transparent", info);
2640 break;
2641 case ISDN_PROTO_L2_MODEM:
2642 isdn_tty_at_cout("modem", info);
2643 break;
2644 case ISDN_PROTO_L2_FAX:
2645 isdn_tty_at_cout("fax", info);
2646 break;
2647 default:
2648 isdn_tty_at_cout("unknown", info);
2649 break;
2650 }
2651 if (m->mdmreg[REG_T70] & BIT_T70) {
2652 isdn_tty_at_cout("/T.70", info);
2653 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2654 isdn_tty_at_cout("+", info);
2655 }
2656 isdn_tty_at_cout("\r\n", info);
2657 isdn_tty_at_cout(" Service: ", info);
2658 switch (info->last_si) {
2659 case 1:
2660 isdn_tty_at_cout("audio\r\n", info);
2661 break;
2662 case 5:
2663 isdn_tty_at_cout("btx\r\n", info);
2664 break;
2665 case 7:
2666 isdn_tty_at_cout("data\r\n", info);
2667 break;
2668 default:
2669 sprintf(s, "%d\r\n", info->last_si);
2670 isdn_tty_at_cout(s, info);
2671 break;
2672 }
2673 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2674 isdn_tty_at_cout(s, info);
2675 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2676 isdn_tty_at_cout(s, info);
2677 }
2678
2679 /*
2680 * Parse AT&.. commands.
2681 */
2682 static int
2683 isdn_tty_cmd_ATand(char **p, modem_info *info)
2684 {
2685 atemu *m = &info->emu;
2686 int i;
2687 char rb[100];
2688
2689 #define MAXRB (sizeof(rb) - 1)
2690
2691 switch (*p[0]) {
2692 case 'B':
2693 /* &B - Set Buffersize */
2694 p[0]++;
2695 i = isdn_getnum(p);
2696 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2697 PARSE_ERROR1;
2698 #ifdef CONFIG_ISDN_AUDIO
2699 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2700 PARSE_ERROR1;
2701 #endif
2702 m->mdmreg[REG_PSIZE] = i / 16;
2703 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2704 switch (m->mdmreg[REG_L2PROT]) {
2705 case ISDN_PROTO_L2_V11096:
2706 case ISDN_PROTO_L2_V11019:
2707 case ISDN_PROTO_L2_V11038:
2708 info->xmit_size /= 10;
2709 }
2710 break;
2711 case 'C':
2712 /* &C - DCD Status */
2713 p[0]++;
2714 switch (isdn_getnum(p)) {
2715 case 0:
2716 m->mdmreg[REG_DCD] &= ~BIT_DCD;
2717 break;
2718 case 1:
2719 m->mdmreg[REG_DCD] |= BIT_DCD;
2720 break;
2721 default:
2722 PARSE_ERROR1
2723 }
2724 break;
2725 case 'D':
2726 /* &D - Set DTR-Low-behavior */
2727 p[0]++;
2728 switch (isdn_getnum(p)) {
2729 case 0:
2730 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2731 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2732 break;
2733 case 2:
2734 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2735 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2736 break;
2737 case 3:
2738 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2739 m->mdmreg[REG_DTRR] |= BIT_DTRR;
2740 break;
2741 default:
2742 PARSE_ERROR1
2743 }
2744 break;
2745 case 'E':
2746 /* &E -Set EAZ/MSN */
2747 p[0]++;
2748 isdn_tty_get_msnstr(m->msn, p);
2749 break;
2750 case 'F':
2751 /* &F -Set Factory-Defaults */
2752 p[0]++;
2753 if (info->msr & UART_MSR_DCD)
2754 PARSE_ERROR1;
2755 isdn_tty_reset_profile(m);
2756 isdn_tty_modem_reset_regs(info, 1);
2757 break;
2758 #ifdef DUMMY_HAYES_AT
2759 case 'K':
2760 /* only for be compilant with common scripts */
2761 /* &K Flowcontrol - no function */
2762 p[0]++;
2763 isdn_getnum(p);
2764 break;
2765 #endif
2766 case 'L':
2767 /* &L -Set Numbers to listen on */
2768 p[0]++;
2769 i = 0;
2770 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
2771 (i < ISDN_LMSNLEN - 1))
2772 m->lmsn[i++] = *p[0]++;
2773 m->lmsn[i] = '\0';
2774 break;
2775 case 'R':
2776 /* &R - Set V.110 bitrate adaption */
2777 p[0]++;
2778 i = isdn_getnum(p);
2779 switch (i) {
2780 case 0:
2781 /* Switch off V.110, back to X.75 */
2782 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2783 m->mdmreg[REG_SI2] = 0;
2784 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2785 break;
2786 case 9600:
2787 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2788 m->mdmreg[REG_SI2] = 197;
2789 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2790 break;
2791 case 19200:
2792 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2793 m->mdmreg[REG_SI2] = 199;
2794 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2795 break;
2796 case 38400:
2797 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2798 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2799 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2800 break;
2801 default:
2802 PARSE_ERROR1;
2803 }
2804 /* Switch off T.70 */
2805 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2806 /* Set Service 7 */
2807 m->mdmreg[REG_SI1] |= 4;
2808 break;
2809 case 'S':
2810 /* &S - Set Windowsize */
2811 p[0]++;
2812 i = isdn_getnum(p);
2813 if ((i > 0) && (i < 9))
2814 m->mdmreg[REG_WSIZE] = i;
2815 else
2816 PARSE_ERROR1;
2817 break;
2818 case 'V':
2819 /* &V - Show registers */
2820 p[0]++;
2821 isdn_tty_at_cout("\r\n", info);
2822 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2823 sprintf(rb, "S%02d=%03d%s", i,
2824 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2825 isdn_tty_at_cout(rb, info);
2826 }
2827 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2828 strlen(m->msn) ? m->msn : "None");
2829 isdn_tty_at_cout(rb, info);
2830 if (strlen(m->lmsn)) {
2831 isdn_tty_at_cout("\r\nListen: ", info);
2832 isdn_tty_at_cout(m->lmsn, info);
2833 isdn_tty_at_cout("\r\n", info);
2834 }
2835 break;
2836 case 'W':
2837 /* &W - Write Profile */
2838 p[0]++;
2839 switch (*p[0]) {
2840 case '0':
2841 p[0]++;
2842 modem_write_profile(m);
2843 break;
2844 default:
2845 PARSE_ERROR1;
2846 }
2847 break;
2848 case 'X':
2849 /* &X - Switch to BTX-Mode and T.70 */
2850 p[0]++;
2851 switch (isdn_getnum(p)) {
2852 case 0:
2853 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2854 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2855 break;
2856 case 1:
2857 m->mdmreg[REG_T70] |= BIT_T70;
2858 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2859 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2860 info->xmit_size = 112;
2861 m->mdmreg[REG_SI1] = 4;
2862 m->mdmreg[REG_SI2] = 0;
2863 break;
2864 case 2:
2865 m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT);
2866 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2867 info->xmit_size = 112;
2868 m->mdmreg[REG_SI1] = 4;
2869 m->mdmreg[REG_SI2] = 0;
2870 break;
2871 default:
2872 PARSE_ERROR1;
2873 }
2874 break;
2875 default:
2876 PARSE_ERROR1;
2877 }
2878 return 0;
2879 }
2880
2881 static int
2882 isdn_tty_check_ats(int mreg, int mval, modem_info *info, atemu *m)
2883 {
2884 /* Some plausibility checks */
2885 switch (mreg) {
2886 case REG_L2PROT:
2887 if (mval > ISDN_PROTO_L2_MAX)
2888 return 1;
2889 break;
2890 case REG_PSIZE:
2891 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2892 return 1;
2893 #ifdef CONFIG_ISDN_AUDIO
2894 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
2895 return 1;
2896 #endif
2897 info->xmit_size = mval * 16;
2898 switch (m->mdmreg[REG_L2PROT]) {
2899 case ISDN_PROTO_L2_V11096:
2900 case ISDN_PROTO_L2_V11019:
2901 case ISDN_PROTO_L2_V11038:
2902 info->xmit_size /= 10;
2903 }
2904 break;
2905 case REG_SI1I:
2906 case REG_PLAN:
2907 case REG_SCREEN:
2908 /* readonly registers */
2909 return 1;
2910 }
2911 return 0;
2912 }
2913
2914 /*
2915 * Perform ATS command
2916 */
2917 static int
2918 isdn_tty_cmd_ATS(char **p, modem_info *info)
2919 {
2920 atemu *m = &info->emu;
2921 int bitpos;
2922 int mreg;
2923 int mval;
2924 int bval;
2925
2926 mreg = isdn_getnum(p);
2927 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
2928 PARSE_ERROR1;
2929 switch (*p[0]) {
2930 case '=':
2931 p[0]++;
2932 mval = isdn_getnum(p);
2933 if (mval < 0 || mval > 255)
2934 PARSE_ERROR1;
2935 if (isdn_tty_check_ats(mreg, mval, info, m))
2936 PARSE_ERROR1;
2937 m->mdmreg[mreg] = mval;
2938 break;
2939 case '.':
2940 /* Set/Clear a single bit */
2941 p[0]++;
2942 bitpos = isdn_getnum(p);
2943 if ((bitpos < 0) || (bitpos > 7))
2944 PARSE_ERROR1;
2945 switch (*p[0]) {
2946 case '=':
2947 p[0]++;
2948 bval = isdn_getnum(p);
2949 if (bval < 0 || bval > 1)
2950 PARSE_ERROR1;
2951 if (bval)
2952 mval = m->mdmreg[mreg] | (1 << bitpos);
2953 else
2954 mval = m->mdmreg[mreg] & ~(1 << bitpos);
2955 if (isdn_tty_check_ats(mreg, mval, info, m))
2956 PARSE_ERROR1;
2957 m->mdmreg[mreg] = mval;
2958 break;
2959 case '?':
2960 p[0]++;
2961 isdn_tty_at_cout("\r\n", info);
2962 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
2963 info);
2964 break;
2965 default:
2966 PARSE_ERROR1;
2967 }
2968 break;
2969 case '?':
2970 p[0]++;
2971 isdn_tty_show_profile(mreg, info);
2972 break;
2973 default:
2974 PARSE_ERROR1;
2975 break;
2976 }
2977 return 0;
2978 }
2979
2980 /*
2981 * Perform ATA command
2982 */
2983 static void
2984 isdn_tty_cmd_ATA(modem_info *info)
2985 {
2986 atemu *m = &info->emu;
2987 isdn_ctrl cmd;
2988 int l2;
2989
2990 if (info->msr & UART_MSR_RI) {
2991 /* Accept incoming call */
2992 info->last_dir = 0;
2993 strcpy(info->last_num, dev->num[info->drv_index]);
2994 m->mdmreg[REG_RINGCNT] = 0;
2995 info->msr &= ~UART_MSR_RI;
2996 l2 = m->mdmreg[REG_L2PROT];
2997 #ifdef CONFIG_ISDN_AUDIO
2998 /* If more than one bit set in reg18, autoselect Layer2 */
2999 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
3000 if (m->mdmreg[REG_SI1I] == 1) {
3001 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
3002 l2 = ISDN_PROTO_L2_TRANS;
3003 } else
3004 l2 = ISDN_PROTO_L2_X75I;
3005 }
3006 #endif
3007 cmd.driver = info->isdn_driver;
3008 cmd.command = ISDN_CMD_SETL2;
3009 cmd.arg = info->isdn_channel + (l2 << 8);
3010 info->last_l2 = l2;
3011 isdn_command(&cmd);
3012 cmd.driver = info->isdn_driver;
3013 cmd.command = ISDN_CMD_SETL3;
3014 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3015 #ifdef CONFIG_ISDN_TTY_FAX
3016 if (l2 == ISDN_PROTO_L2_FAX) {
3017 cmd.parm.fax = info->fax;
3018 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3019 }
3020 #endif
3021 isdn_command(&cmd);
3022 cmd.driver = info->isdn_driver;
3023 cmd.arg = info->isdn_channel;
3024 cmd.command = ISDN_CMD_ACCEPTD;
3025 info->dialing = 16;
3026 info->emu.carrierwait = 0;
3027 isdn_command(&cmd);
3028 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3029 } else
3030 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3031 }
3032
3033 #ifdef CONFIG_ISDN_AUDIO
3034 /*
3035 * Parse AT+F.. commands
3036 */
3037 static int
3038 isdn_tty_cmd_PLUSF(char **p, modem_info *info)
3039 {
3040 atemu *m = &info->emu;
3041 char rs[20];
3042
3043 if (!strncmp(p[0], "CLASS", 5)) {
3044 p[0] += 5;
3045 switch (*p[0]) {
3046 case '?':
3047 p[0]++;
3048 sprintf(rs, "\r\n%d",
3049 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
3050 #ifdef CONFIG_ISDN_TTY_FAX
3051 if (TTY_IS_FCLASS2(info))
3052 sprintf(rs, "\r\n2");
3053 else if (TTY_IS_FCLASS1(info))
3054 sprintf(rs, "\r\n1");
3055 #endif
3056 isdn_tty_at_cout(rs, info);
3057 break;
3058 case '=':
3059 p[0]++;
3060 switch (*p[0]) {
3061 case '0':
3062 p[0]++;
3063 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3064 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3065 m->mdmreg[REG_SI1] = 4;
3066 info->xmit_size =
3067 m->mdmreg[REG_PSIZE] * 16;
3068 break;
3069 #ifdef CONFIG_ISDN_TTY_FAX
3070 case '1':
3071 p[0]++;
3072 if (!(dev->global_features &
3073 ISDN_FEATURE_L3_FCLASS1))
3074 PARSE_ERROR1;
3075 m->mdmreg[REG_SI1] = 1;
3076 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3077 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3078 info->xmit_size =
3079 m->mdmreg[REG_PSIZE] * 16;
3080 break;
3081 case '2':
3082 p[0]++;
3083 if (!(dev->global_features &
3084 ISDN_FEATURE_L3_FCLASS2))
3085 PARSE_ERROR1;
3086 m->mdmreg[REG_SI1] = 1;
3087 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3088 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3089 info->xmit_size =
3090 m->mdmreg[REG_PSIZE] * 16;
3091 break;
3092 #endif
3093 case '8':
3094 p[0]++;
3095 /* L2 will change on dialout with si=1 */
3096 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3097 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3098 m->mdmreg[REG_SI1] = 5;
3099 info->xmit_size = VBUF;
3100 break;
3101 case '?':
3102 p[0]++;
3103 strcpy(rs, "\r\n0,");
3104 #ifdef CONFIG_ISDN_TTY_FAX
3105 if (dev->global_features &
3106 ISDN_FEATURE_L3_FCLASS1)
3107 strcat(rs, "1,");
3108 if (dev->global_features &
3109 ISDN_FEATURE_L3_FCLASS2)
3110 strcat(rs, "2,");
3111 #endif
3112 strcat(rs, "8");
3113 isdn_tty_at_cout(rs, info);
3114 break;
3115 default:
3116 PARSE_ERROR1;
3117 }
3118 break;
3119 default:
3120 PARSE_ERROR1;
3121 }
3122 return 0;
3123 }
3124 #ifdef CONFIG_ISDN_TTY_FAX
3125 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3126 #else
3127 PARSE_ERROR1;
3128 #endif
3129 }
3130
3131 /*
3132 * Parse AT+V.. commands
3133 */
3134 static int
3135 isdn_tty_cmd_PLUSV(char **p, modem_info *info)
3136 {
3137 atemu *m = &info->emu;
3138 isdn_ctrl cmd;
3139 static char *vcmd[] =
3140 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
3141 int i;
3142 int par1;
3143 int par2;
3144 char rs[20];
3145
3146 i = 0;
3147 while (vcmd[i]) {
3148 if (!strncmp(vcmd[i], p[0], 2)) {
3149 p[0] += 2;
3150 break;
3151 }
3152 i++;
3153 }
3154 switch (i) {
3155 case 0:
3156 /* AT+VNH - Auto hangup feature */
3157 switch (*p[0]) {
3158 case '?':
3159 p[0]++;
3160 isdn_tty_at_cout("\r\n1", info);
3161 break;
3162 case '=':
3163 p[0]++;
3164 switch (*p[0]) {
3165 case '1':
3166 p[0]++;
3167 break;
3168 case '?':
3169 p[0]++;
3170 isdn_tty_at_cout("\r\n1", info);
3171 break;
3172 default:
3173 PARSE_ERROR1;
3174 }
3175 break;
3176 default:
3177 PARSE_ERROR1;
3178 }
3179 break;
3180 case 1:
3181 /* AT+VIP - Reset all voice parameters */
3182 isdn_tty_modem_reset_vpar(m);
3183 break;
3184 case 2:
3185 /* AT+VLS - Select device, accept incoming call */
3186 switch (*p[0]) {
3187 case '?':
3188 p[0]++;
3189 sprintf(rs, "\r\n%d", m->vpar[0]);
3190 isdn_tty_at_cout(rs, info);
3191 break;
3192 case '=':
3193 p[0]++;
3194 switch (*p[0]) {
3195 case '0':
3196 p[0]++;
3197 m->vpar[0] = 0;
3198 break;
3199 case '2':
3200 p[0]++;
3201 m->vpar[0] = 2;
3202 break;
3203 case '?':
3204 p[0]++;
3205 isdn_tty_at_cout("\r\n0,2", info);
3206 break;
3207 default:
3208 PARSE_ERROR1;
3209 }
3210 break;
3211 default:
3212 PARSE_ERROR1;
3213 }
3214 break;
3215 case 3:
3216 /* AT+VRX - Start recording */
3217 if (!m->vpar[0])
3218 PARSE_ERROR1;
3219 if (info->online != 1) {
3220 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3221 return 1;
3222 }
3223 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3224 if (!info->dtmf_state) {
3225 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3226 PARSE_ERROR1;
3227 }
3228 info->silence_state = isdn_audio_silence_init(info->silence_state);
3229 if (!info->silence_state) {
3230 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3231 PARSE_ERROR1;
3232 }
3233 if (m->vpar[3] < 5) {
3234 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3235 if (!info->adpcmr) {
3236 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3237 PARSE_ERROR1;
3238 }
3239 }
3240 #ifdef ISDN_DEBUG_AT
3241 printk(KERN_DEBUG "AT: +VRX\n");
3242 #endif
3243 info->vonline |= 1;
3244 isdn_tty_modem_result(RESULT_CONNECT, info);
3245 return 0;
3246 break;
3247 case 4:
3248 /* AT+VSD - Silence detection */
3249 switch (*p[0]) {
3250 case '?':
3251 p[0]++;
3252 sprintf(rs, "\r\n<%d>,<%d>",
3253 m->vpar[1],
3254 m->vpar[2]);
3255 isdn_tty_at_cout(rs, info);
3256 break;
3257 case '=':
3258 p[0]++;
3259 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3260 par1 = isdn_getnum(p);
3261 if ((par1 < 0) || (par1 > 31))
3262 PARSE_ERROR1;
3263 if (*p[0] != ',')
3264 PARSE_ERROR1;
3265 p[0]++;
3266 par2 = isdn_getnum(p);
3267 if ((par2 < 0) || (par2 > 255))
3268 PARSE_ERROR1;
3269 m->vpar[1] = par1;
3270 m->vpar[2] = par2;
3271 break;
3272 } else
3273 if (*p[0] == '?') {
3274 p[0]++;
3275 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3276 info);
3277 break;
3278 } else
3279 PARSE_ERROR1;
3280 break;
3281 default:
3282 PARSE_ERROR1;
3283 }
3284 break;
3285 case 5:
3286 /* AT+VSM - Select compression */
3287 switch (*p[0]) {
3288 case '?':
3289 p[0]++;
3290 sprintf(rs, "\r\n<%d>,<%d><8000>",
3291 m->vpar[3],
3292 m->vpar[1]);
3293 isdn_tty_at_cout(rs, info);
3294 break;
3295 case '=':
3296 p[0]++;
3297 switch (*p[0]) {
3298 case '2':
3299 case '3':
3300 case '4':
3301 case '5':
3302 case '6':
3303 par1 = isdn_getnum(p);
3304 if ((par1 < 2) || (par1 > 6))
3305 PARSE_ERROR1;
3306 m->vpar[3] = par1;
3307 break;
3308 case '?':
3309 p[0]++;
3310 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3311 info);
3312 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3313 info);
3314 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3315 info);
3316 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3317 info);
3318 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3319 info);
3320 break;
3321 default:
3322 PARSE_ERROR1;
3323 }
3324 break;
3325 default:
3326 PARSE_ERROR1;
3327 }
3328 break;
3329 case 6:
3330 /* AT+VTX - Start sending */
3331 if (!m->vpar[0])
3332 PARSE_ERROR1;
3333 if (info->online != 1) {
3334 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3335 return 1;
3336 }
3337 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3338 if (!info->dtmf_state) {
3339 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3340 PARSE_ERROR1;
3341 }
3342 if (m->vpar[3] < 5) {
3343 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3344 if (!info->adpcms) {
3345 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3346 PARSE_ERROR1;
3347 }
3348 }
3349 #ifdef ISDN_DEBUG_AT
3350 printk(KERN_DEBUG "AT: +VTX\n");
3351 #endif
3352 m->lastDLE = 0;
3353 info->vonline |= 2;
3354 isdn_tty_modem_result(RESULT_CONNECT, info);
3355 return 0;
3356 break;
3357 case 7:
3358 /* AT+VDD - DTMF detection */
3359 switch (*p[0]) {
3360 case '?':
3361 p[0]++;
3362 sprintf(rs, "\r\n<%d>,<%d>",
3363 m->vpar[4],
3364 m->vpar[5]);
3365 isdn_tty_at_cout(rs, info);
3366 break;
3367 case '=':
3368 p[0]++;
3369 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3370 if (info->online != 1)
3371 PARSE_ERROR1;
3372 par1 = isdn_getnum(p);
3373 if ((par1 < 0) || (par1 > 15))
3374 PARSE_ERROR1;
3375 if (*p[0] != ',')
3376 PARSE_ERROR1;
3377 p[0]++;
3378 par2 = isdn_getnum(p);
3379 if ((par2 < 0) || (par2 > 255))
3380 PARSE_ERROR1;
3381 m->vpar[4] = par1;
3382 m->vpar[5] = par2;
3383 cmd.driver = info->isdn_driver;
3384 cmd.command = ISDN_CMD_AUDIO;
3385 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3386 cmd.parm.num[0] = par1;
3387 cmd.parm.num[1] = par2;
3388 isdn_command(&cmd);
3389 break;
3390 } else
3391 if (*p[0] == '?') {
3392 p[0]++;
3393 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3394 info);
3395 break;
3396 } else
3397 PARSE_ERROR1;
3398 break;
3399 default:
3400 PARSE_ERROR1;
3401 }
3402 break;
3403 default:
3404 PARSE_ERROR1;
3405 }
3406 return 0;
3407 }
3408 #endif /* CONFIG_ISDN_AUDIO */
3409
3410 /*
3411 * Parse and perform an AT-command-line.
3412 */
3413 static void
3414 isdn_tty_parse_at(modem_info *info)
3415 {
3416 atemu *m = &info->emu;
3417 char *p;
3418 char ds[ISDN_MSNLEN];
3419
3420 #ifdef ISDN_DEBUG_AT
3421 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3422 #endif
3423 for (p = &m->mdmcmd[2]; *p;) {
3424 switch (*p) {
3425 case ' ':
3426 p++;
3427 break;
3428 case 'A':
3429 /* A - Accept incoming call */
3430 p++;
3431 isdn_tty_cmd_ATA(info);
3432 return;
3433 break;
3434 case 'D':
3435 /* D - Dial */
3436 if (info->msr & UART_MSR_DCD)
3437 PARSE_ERROR;
3438 if (info->msr & UART_MSR_RI) {
3439 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3440 return;
3441 }
3442 isdn_tty_getdial(++p, ds, sizeof ds);
3443 p += strlen(p);
3444 if (!strlen(m->msn))
3445 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3446 else if (strlen(ds))
3447 isdn_tty_dial(ds, info, m);
3448 else
3449 PARSE_ERROR;
3450 return;
3451 case 'E':
3452 /* E - Turn Echo on/off */
3453 p++;
3454 switch (isdn_getnum(&p)) {
3455 case 0:
3456 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
3457 break;
3458 case 1:
3459 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3460 break;
3461 default:
3462 PARSE_ERROR;
3463 }
3464 break;
3465 case 'H':
3466 /* H - On/Off-hook */
3467 p++;
3468 switch (*p) {
3469 case '0':
3470 p++;
3471 isdn_tty_on_hook(info);
3472 break;
3473 case '1':
3474 p++;
3475 isdn_tty_off_hook();
3476 break;
3477 default:
3478 isdn_tty_on_hook(info);
3479 break;
3480 }
3481 break;
3482 case 'I':
3483 /* I - Information */
3484 p++;
3485 isdn_tty_at_cout("\r\nLinux ISDN", info);
3486 switch (*p) {
3487 case '0':
3488 case '1':
3489 p++;
3490 break;
3491 case '2':
3492 p++;
3493 isdn_tty_report(info);
3494 break;
3495 case '3':
3496 p++;
3497 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
3498 isdn_tty_at_cout(ds, info);
3499 break;
3500 default:;
3501 }
3502 break;
3503 #ifdef DUMMY_HAYES_AT
3504 case 'L':
3505 case 'M':
3506 /* only for be compilant with common scripts */
3507 /* no function */
3508 p++;
3509 isdn_getnum(&p);
3510 break;
3511 #endif
3512 case 'O':
3513 /* O - Go online */
3514 p++;
3515 if (info->msr & UART_MSR_DCD)
3516 /* if B-Channel is up */
3517 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT : RESULT_CONNECT64000, info);
3518 else
3519 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3520 return;
3521 case 'Q':
3522 /* Q - Turn Emulator messages on/off */
3523 p++;
3524 switch (isdn_getnum(&p)) {
3525 case 0:
3526 m->mdmreg[REG_RESP] |= BIT_RESP;
3527 break;
3528 case 1:
3529 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3530 break;
3531 default:
3532 PARSE_ERROR;
3533 }
3534 break;
3535 case 'S':
3536 /* S - Set/Get Register */
3537 p++;
3538 if (isdn_tty_cmd_ATS(&p, info))
3539 return;
3540 break;
3541 case 'V':
3542 /* V - Numeric or ASCII Emulator-messages */
3543 p++;
3544 switch (isdn_getnum(&p)) {
3545 case 0:
3546 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3547 break;
3548 case 1:
3549 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
3550 break;
3551 default:
3552 PARSE_ERROR;
3553 }
3554 break;
3555 case 'Z':
3556 /* Z - Load Registers from Profile */
3557 p++;
3558 if (info->msr & UART_MSR_DCD) {
3559 info->online = 0;
3560 isdn_tty_on_hook(info);
3561 }
3562 isdn_tty_modem_reset_regs(info, 1);
3563 break;
3564 case '+':
3565 p++;
3566 switch (*p) {
3567 #ifdef CONFIG_ISDN_AUDIO
3568 case 'F':
3569 p++;
3570 if (isdn_tty_cmd_PLUSF(&p, info))
3571 return;
3572 break;
3573 case 'V':
3574 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3575 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3576 PARSE_ERROR;
3577 p++;
3578 if (isdn_tty_cmd_PLUSV(&p, info))
3579 return;
3580 break;
3581 #endif /* CONFIG_ISDN_AUDIO */
3582 case 'S': /* SUSPEND */
3583 p++;
3584 isdn_tty_get_msnstr(ds, &p);
3585 isdn_tty_suspend(ds, info, m);
3586 break;
3587 case 'R': /* RESUME */
3588 p++;
3589 isdn_tty_get_msnstr(ds, &p);
3590 isdn_tty_resume(ds, info, m);
3591 break;
3592 case 'M': /* MESSAGE */
3593 p++;
3594 isdn_tty_send_msg(info, m, p);
3595 break;
3596 default:
3597 PARSE_ERROR;
3598 }
3599 break;
3600 case '&':
3601 p++;
3602 if (isdn_tty_cmd_ATand(&p, info))
3603 return;
3604 break;
3605 default:
3606 PARSE_ERROR;
3607 }
3608 }
3609 #ifdef CONFIG_ISDN_AUDIO
3610 if (!info->vonline)
3611 #endif
3612 isdn_tty_modem_result(RESULT_OK, info);
3613 }
3614
3615 /* Need own toupper() because standard-toupper is not available
3616 * within modules.
3617 */
3618 #define my_toupper(c) (((c >= 'a') && (c <= 'z')) ? (c & 0xdf) : c)
3619
3620 /*
3621 * Perform line-editing of AT-commands
3622 *
3623 * Parameters:
3624 * p inputbuffer
3625 * count length of buffer
3626 * channel index to line (minor-device)
3627 */
3628 static int
3629 isdn_tty_edit_at(const char *p, int count, modem_info *info)
3630 {
3631 atemu *m = &info->emu;
3632 int total = 0;
3633 u_char c;
3634 char eb[2];
3635 int cnt;
3636
3637 for (cnt = count; cnt > 0; p++, cnt--) {
3638 c = *p;
3639 total++;
3640 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3641 /* Separator (CR or LF) */
3642 m->mdmcmd[m->mdmcmdl] = 0;
3643 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3644 eb[0] = c;
3645 eb[1] = 0;
3646 isdn_tty_at_cout(eb, info);
3647 }
3648 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3649 isdn_tty_parse_at(info);
3650 m->mdmcmdl = 0;
3651 continue;
3652 }
3653 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3654 /* Backspace-Function */
3655 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3656 if (m->mdmcmdl)
3657 m->mdmcmdl--;
3658 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3659 isdn_tty_at_cout("\b", info);
3660 }
3661 continue;
3662 }
3663 if (cmdchar(c)) {
3664 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3665 eb[0] = c;
3666 eb[1] = 0;
3667 isdn_tty_at_cout(eb, info);
3668 }
3669 if (m->mdmcmdl < 255) {
3670 c = my_toupper(c);
3671 switch (m->mdmcmdl) {
3672 case 1:
3673 if (c == 'T') {
3674 m->mdmcmd[m->mdmcmdl] = c;
3675 m->mdmcmd[++m->mdmcmdl] = 0;
3676 break;
3677 } else
3678 m->mdmcmdl = 0;
3679 /* Fall through, check for 'A' */
3680 case 0:
3681 if (c == 'A') {
3682 m->mdmcmd[m->mdmcmdl] = c;
3683 m->mdmcmd[++m->mdmcmdl] = 0;
3684 }
3685 break;
3686 default:
3687 m->mdmcmd[m->mdmcmdl] = c;
3688 m->mdmcmd[++m->mdmcmdl] = 0;
3689 }
3690 }
3691 }
3692 }
3693 return total;
3694 }
3695
3696 /*
3697 * Switch all modem-channels who are online and got a valid
3698 * escape-sequence 1.5 seconds ago, to command-mode.
3699 * This function is called every second via timer-interrupt from within
3700 * timer-dispatcher isdn_timer_function()
3701 */
3702 void
3703 isdn_tty_modem_escape(void)
3704 {
3705 int ton = 0;
3706 int i;
3707 int midx;
3708
3709 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
3710 if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) {
3711 modem_info *info = &dev->mdm.info[midx];
3712 if (info->online) {
3713 ton = 1;
3714 if ((info->emu.pluscount == 3) &&
3715 time_after(jiffies,
3716 info->emu.lastplus + PLUSWAIT2)) {
3717 info->emu.pluscount = 0;
3718 info->online = 0;
3719 isdn_tty_modem_result(RESULT_OK, info);
3720 }
3721 }
3722 }
3723 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3724 }
3725
3726 /*
3727 * Put a RING-message to all modem-channels who have the RI-bit set.
3728 * This function is called every second via timer-interrupt from within
3729 * timer-dispatcher isdn_timer_function()
3730 */
3731 void
3732 isdn_tty_modem_ring(void)
3733 {
3734 int ton = 0;
3735 int i;
3736
3737 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3738 modem_info *info = &dev->mdm.info[i];
3739 if (info->msr & UART_MSR_RI) {
3740 ton = 1;
3741 isdn_tty_modem_result(RESULT_RING, info);
3742 }
3743 }
3744 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3745 }
3746
3747 /*
3748 * For all online tty's, try sending data to
3749 * the lower levels.
3750 */
3751 void
3752 isdn_tty_modem_xmit(void)
3753 {
3754 int ton = 1;
3755 int i;
3756
3757 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3758 modem_info *info = &dev->mdm.info[i];
3759 if (info->online) {
3760 ton = 1;
3761 isdn_tty_senddown(info);
3762 isdn_tty_tint(info);
3763 }
3764 }
3765 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3766 }
3767
3768 /*
3769 * Check all channels if we have a 'no carrier' timeout.
3770 * Timeout value is set by Register S7.
3771 */
3772 void
3773 isdn_tty_carrier_timeout(void)
3774 {
3775 int ton = 0;
3776 int i;
3777
3778 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3779 modem_info *info = &dev->mdm.info[i];
3780 if (!info->dialing)
3781 continue;
3782 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3783 info->dialing = 0;
3784 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3785 isdn_tty_modem_hup(info, 1);
3786 } else
3787 ton = 1;
3788 }
3789 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);
3790 }
Linux kernel - Deliverables
This page took 0.21582 seconds and 5 git commands to generate.