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TTY: isdn, define tty_port_operations
[linux.git] / drivers / isdn / i4l / isdn_tty.c
CommitLineData
1ca6711e 1/*
1da177e4
LT		 2 * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
3 *
4 * Copyright 1994-1999 by Fritz Elfert ([email protected])
5 * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11#undef ISDN_TTY_STAT_DEBUG
12
1da177e4 13#include <linux/isdn.h>
6776a2f0 14#include <linux/serial.h> /* ASYNC_* flags */
5a0e3ad6 15#include <linux/slab.h>
1da177e4 16#include <linux/delay.h>
72250d44 17#include <linux/mutex.h>
1da177e4
LT		 18#include "isdn_common.h"
19#include "isdn_tty.h"
20#ifdef CONFIG_ISDN_AUDIO
21#include "isdn_audio.h"
22#define VBUF 0x3e0
23#define VBUFX (VBUF/16)
24#endif
25
26#define FIX_FILE_TRANSFER
27#define DUMMY_HAYES_AT
28
29/* Prototypes */
30
72250d44 31static DEFINE_MUTEX(modem_info_mutex);
1da177e4
LT		 32static int isdn_tty_edit_at(const char *, int, modem_info *);
33static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *);
34static void isdn_tty_modem_reset_regs(modem_info *, int);
35static void isdn_tty_cmd_ATA(modem_info *);
36static void isdn_tty_flush_buffer(struct tty_struct *);
37static void isdn_tty_modem_result(int, modem_info *);
38#ifdef CONFIG_ISDN_AUDIO
39static int isdn_tty_countDLE(unsigned char *, int);
40#endif
41
42/* Leave this unchanged unless you know what you do! */
43#define MODEM_PARANOIA_CHECK
44#define MODEM_DO_RESTART
45
46static int bit2si[8] =
47{1, 5, 7, 7, 7, 7, 7, 7};
48static int si2bit[8] =
49{4, 1, 4, 4, 4, 4, 4, 4};
50
1da177e4
LT		 51/* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
52 * to stuff incoming data directly into a tty's flip-buffer. This
53 * is done to speed up tty-receiving if the receive-queue is empty.
54 * This routine MUST be called with interrupts off.
55 * Return:
56 * 1 = Success
57 * 0 = Failure, data has to be buffered and later processed by
58 * isdn_tty_readmodem().
59 */
60static int
475be4d8 61isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
1da177e4
LT		 62{
63 int c;
64 int len;
65 struct tty_struct *tty;
33f0f88f 66 char last;
1da177e4 67
37630f40
JS		 68 if (!info->online)
69 return 0;
70
ba43294d 71 tty = info->port.tty;
37630f40
JS		 72 if (!tty)
73 return 0;
74
75 if (!(info->mcr & UART_MCR_RTS))
76 return 0;
77
78 len = skb->len
1da177e4 79#ifdef CONFIG_ISDN_AUDIO
37630f40 80 + ISDN_AUDIO_SKB_DLECOUNT(skb)
1da177e4 81#endif
37630f40
JS		 82 ;
83
84 c = tty_buffer_request_room(tty, len);
85 if (c < len)
86 return 0;
33f0f88f 87
1da177e4 88#ifdef CONFIG_ISDN_AUDIO
37630f40
JS		 89 if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
90 int l = skb->len;
91 unsigned char *dp = skb->data;
92 while (--l) {
93 if (*dp == DLE)
94 tty_insert_flip_char(tty, DLE, 0);
95 tty_insert_flip_char(tty, *dp++, 0);
96 }
97 if (*dp == DLE)
98 tty_insert_flip_char(tty, DLE, 0);
99 last = *dp;
100 } else {
1da177e4 101#endif
37630f40
JS		 102 if (len > 1)
103 tty_insert_flip_string(tty, skb->data, len - 1);
104 last = skb->data[len - 1];
105#ifdef CONFIG_ISDN_AUDIO
1da177e4 106 }
37630f40
JS		 107#endif
108 if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
109 tty_insert_flip_char(tty, last, 0xFF);
110 else
111 tty_insert_flip_char(tty, last, TTY_NORMAL);
112 tty_flip_buffer_push(tty);
113 kfree_skb(skb);
114
115 return 1;
1da177e4
LT		 116}
117
118/* isdn_tty_readmodem() is called periodically from within timer-interrupt.
119 * It tries getting received data from the receive queue an stuff it into
120 * the tty's flip-buffer.
121 */
122void
123isdn_tty_readmodem(void)
124{
125 int resched = 0;
126 int midx;
127 int i;
1da177e4
LT		 128 int r;
129 struct tty_struct *tty;
130 modem_info *info;
131
132 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
37630f40
JS		 133 midx = dev->m_idx[i];
134 if (midx < 0)
135 continue;
136
137 info = &dev->mdm.info[midx];
138 if (!info->online)
139 continue;
140
141 r = 0;
1da177e4 142#ifdef CONFIG_ISDN_AUDIO
37630f40
JS		 143 isdn_audio_eval_dtmf(info);
144 if ((info->vonline & 1) && (info->emu.vpar[1]))
145 isdn_audio_eval_silence(info);
146#endif
ba43294d 147 tty = info->port.tty;
37630f40
JS		 148 if (tty) {
149 if (info->mcr & UART_MCR_RTS) {
150 /* CISCO AsyncPPP Hack */
151 if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
152 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
153 else
154 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
155 if (r)
156 tty_flip_buffer_push(tty);
157 } else
158 r = 1;
159 } else
160 r = 1;
161 if (r) {
162 info->rcvsched = 0;
163 resched = 1;
164 } else
165 info->rcvsched = 1;
1da177e4
LT		 166 }
167 if (!resched)
168 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
169}
170
171int
172isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
173{
174 ulong flags;
175 int midx;
176#ifdef CONFIG_ISDN_AUDIO
177 int ifmt;
178#endif
179 modem_info *info;
180
181 if ((midx = dev->m_idx[i]) < 0) {
182 /* if midx is invalid, packet is not for tty */
183 return 0;
184 }
185 info = &dev->mdm.info[midx];
186#ifdef CONFIG_ISDN_AUDIO
187 ifmt = 1;
475be4d8 188
1da177e4
LT		 189 if ((info->vonline) && (!info->emu.vpar[4]))
190 isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
191 if ((info->vonline & 1) && (info->emu.vpar[1]))
192 isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
193#endif
194 if ((info->online < 2)
195#ifdef CONFIG_ISDN_AUDIO
196 && (!(info->vonline & 1))
197#endif
198 ) {
199 /* If Modem not listening, drop data */
200 kfree_skb(skb);
201 return 1;
202 }
203 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
204 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
205 /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
206 if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
207 skb_pull(skb, 4);
208 else
209 if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
210 skb_pull(skb, 2);
211 } else
212 /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
213 if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
214 skb_pull(skb, 4);
215 }
216#ifdef CONFIG_ISDN_AUDIO
217 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
218 ISDN_AUDIO_SKB_LOCK(skb) = 0;
219 if (info->vonline & 1) {
220 /* voice conversion/compression */
221 switch (info->emu.vpar[3]) {
475be4d8
JP		 222 case 2:
223 case 3:
224 case 4:
225 /* adpcm
226 * Since compressed data takes less
227 * space, we can overwrite the buffer.
228 */
229 skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
230 ifmt,
231 skb->data,
232 skb->data,
233 skb->len));
234 break;
235 case 5:
236 /* a-law */
237 if (!ifmt)
238 isdn_audio_ulaw2alaw(skb->data, skb->len);
239 break;
240 case 6:
241 /* u-law */
242 if (ifmt)
243 isdn_audio_alaw2ulaw(skb->data, skb->len);
244 break;
1da177e4
LT		 245 }
246 ISDN_AUDIO_SKB_DLECOUNT(skb) =
247 isdn_tty_countDLE(skb->data, skb->len);
248 }
249#ifdef CONFIG_ISDN_TTY_FAX
250 else {
251 if (info->faxonline & 2) {
252 isdn_tty_fax_bitorder(info, skb);
253 ISDN_AUDIO_SKB_DLECOUNT(skb) =
254 isdn_tty_countDLE(skb->data, skb->len);
255 }
256 }
257#endif
258#endif
33f0f88f 259 /* Try to deliver directly via tty-buf if queue is empty */
1da177e4
LT		 260 spin_lock_irqsave(&info->readlock, flags);
261 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
262 if (isdn_tty_try_read(info, skb)) {
263 spin_unlock_irqrestore(&info->readlock, flags);
264 return 1;
265 }
266 /* Direct deliver failed or queue wasn't empty.
267 * Queue up for later dequeueing via timer-irq.
268 */
269 __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
270 dev->drv[di]->rcvcount[channel] +=
271 (skb->len
272#ifdef CONFIG_ISDN_AUDIO
273 + ISDN_AUDIO_SKB_DLECOUNT(skb)
274#endif
275 );
276 spin_unlock_irqrestore(&info->readlock, flags);
277 /* Schedule dequeuing */
278 if ((dev->modempoll) && (info->rcvsched))
279 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
280 return 1;
281}
282
3e206b0a 283static void
475be4d8 284isdn_tty_cleanup_xmit(modem_info *info)
1da177e4
LT		 285{
286 skb_queue_purge(&info->xmit_queue);
287#ifdef CONFIG_ISDN_AUDIO
288 skb_queue_purge(&info->dtmf_queue);
289#endif
290}
291
292static void
475be4d8 293isdn_tty_tint(modem_info *info)
1da177e4
LT		 294{
295 struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
296 int len, slen;
297
298 if (!skb)
299 return;
300 len = skb->len;
301 if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
302 info->isdn_channel, 1, skb)) == len) {
ba43294d 303 struct tty_struct *tty = info->port.tty;
1da177e4
LT		 304 info->send_outstanding++;
305 info->msr &= ~UART_MSR_CTS;
306 info->lsr &= ~UART_LSR_TEMT;
307 tty_wakeup(tty);
308 return;
309 }
310 if (slen < 0) {
311 /* Error: no channel, already shutdown, or wrong parameter */
312 dev_kfree_skb(skb);
313 return;
314 }
315 skb_queue_head(&info->xmit_queue, skb);
316}
317
318#ifdef CONFIG_ISDN_AUDIO
319static int
320isdn_tty_countDLE(unsigned char *buf, int len)
321{
322 int count = 0;
323
324 while (len--)
325 if (*buf++ == DLE)
326 count++;
327 return count;
328}
329
330/* This routine is called from within isdn_tty_write() to perform
331 * DLE-decoding when sending audio-data.
332 */
333static int
475be4d8 334isdn_tty_handleDLEdown(modem_info *info, atemu *m, int len)
1da177e4 335{
82e46b31 336 unsigned char *p = &info->port.xmit_buf[info->xmit_count];
1da177e4
LT		 337 int count = 0;
338
339 while (len > 0) {
340 if (m->lastDLE) {
341 m->lastDLE = 0;
342 switch (*p) {
475be4d8
JP		 343 case DLE:
344 /* Escape code */
345 if (len > 1)
346 memmove(p, p + 1, len - 1);
347 p--;
348 count++;
349 break;
350 case ETX:
351 /* End of data */
352 info->vonline |= 4;
353 return count;
354 case DC4:
355 /* Abort RX */
356 info->vonline &= ~1;
1da177e4 357#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 358 printk(KERN_DEBUG
359 "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
360 info->line);
1da177e4 361#endif
475be4d8
JP		 362 isdn_tty_at_cout("\020\003", info);
363 if (!info->vonline) {
1da177e4 364#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 365 printk(KERN_DEBUG
366 "DLEdown: send VCON on ttyI%d\n",
367 info->line);
1da177e4 368#endif
475be4d8
JP		 369 isdn_tty_at_cout("\r\nVCON\r\n", info);
370 }
371 /* Fall through */
372 case 'q':
373 case 's':
374 /* Silence */
375 if (len > 1)
376 memmove(p, p + 1, len - 1);
377 p--;
378 break;
1da177e4
LT		 379 }
380 } else {
381 if (*p == DLE)
382 m->lastDLE = 1;
383 else
384 count++;
385 }
386 p++;
387 len--;
388 }
389 if (len < 0) {
390 printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
391 return 0;
392 }
393 return count;
394}
395
396/* This routine is called from within isdn_tty_write() when receiving
397 * audio-data. It interrupts receiving, if an character other than
398 * ^S or ^Q is sent.
399 */
400static int
401isdn_tty_end_vrx(const char *buf, int c)
402{
403 char ch;
404
405 while (c--) {
406 ch = *buf;
407 if ((ch != 0x11) && (ch != 0x13))
408 return 1;
409 buf++;
410 }
411 return 0;
412}
413
414static int voice_cf[7] =
415{0, 0, 4, 3, 2, 0, 0};
416
417#endif /* CONFIG_ISDN_AUDIO */
418
419/* isdn_tty_senddown() is called either directly from within isdn_tty_write()
420 * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
421 * outgoing data from the tty's xmit-buffer, handles voice-decompression or
422 * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
423 */
424static void
475be4d8 425isdn_tty_senddown(modem_info *info)
1da177e4
LT		 426{
427 int buflen;
428 int skb_res;
429#ifdef CONFIG_ISDN_AUDIO
430 int audio_len;
431#endif
432 struct sk_buff *skb;
433
434#ifdef CONFIG_ISDN_AUDIO
435 if (info->vonline & 4) {
436 info->vonline &= ~6;
437 if (!info->vonline) {
438#ifdef ISDN_DEBUG_MODEM_VOICE
439 printk(KERN_DEBUG
440 "senddown: send VCON on ttyI%d\n",
441 info->line);
442#endif
443 isdn_tty_at_cout("\r\nVCON\r\n", info);
444 }
445 }
446#endif
447 if (!(buflen = info->xmit_count))
448 return;
475be4d8 449 if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
1da177e4 450 info->msr &= ~UART_MSR_CTS;
475be4d8 451 info->lsr &= ~UART_LSR_TEMT;
1da177e4
LT		 452 /* info->xmit_count is modified here and in isdn_tty_write().
453 * So we return here if isdn_tty_write() is in the
454 * critical section.
455 */
456 atomic_inc(&info->xmit_lock);
457 if (!(atomic_dec_and_test(&info->xmit_lock)))
458 return;
459 if (info->isdn_driver < 0) {
460 info->xmit_count = 0;
461 return;
462 }
463 skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
464#ifdef CONFIG_ISDN_AUDIO
465 if (info->vonline & 2)
466 audio_len = buflen * voice_cf[info->emu.vpar[3]];
467 else
468 audio_len = 0;
469 skb = dev_alloc_skb(skb_res + buflen + audio_len);
470#else
471 skb = dev_alloc_skb(skb_res + buflen);
472#endif
473 if (!skb) {
474 printk(KERN_WARNING
475 "isdn_tty: Out of memory in ttyI%d senddown\n",
476 info->line);
477 return;
478 }
479 skb_reserve(skb, skb_res);
82e46b31 480 memcpy(skb_put(skb, buflen), info->port.xmit_buf, buflen);
1da177e4
LT		 481 info->xmit_count = 0;
482#ifdef CONFIG_ISDN_AUDIO
483 if (info->vonline & 2) {
484 /* For now, ifmt is fixed to 1 (alaw), since this
485 * is used with ISDN everywhere in the world, except
486 * US, Canada and Japan.
487 * Later, when US-ISDN protocols are implemented,
488 * this setting will depend on the D-channel protocol.
489 */
490 int ifmt = 1;
491
492 /* voice conversion/decompression */
493 switch (info->emu.vpar[3]) {
475be4d8
JP		 494 case 2:
495 case 3:
496 case 4:
497 /* adpcm, compatible to ZyXel 1496 modem
498 * with ROM revision 6.01
499 */
500 audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
501 ifmt,
502 skb->data,
503 skb_put(skb, audio_len),
504 buflen);
505 skb_pull(skb, buflen);
506 skb_trim(skb, audio_len);
507 break;
508 case 5:
509 /* a-law */
510 if (!ifmt)
511 isdn_audio_alaw2ulaw(skb->data,
512 buflen);
513 break;
514 case 6:
515 /* u-law */
516 if (ifmt)
517 isdn_audio_ulaw2alaw(skb->data,
518 buflen);
519 break;
1da177e4
LT		 520 }
521 }
522#endif /* CONFIG_ISDN_AUDIO */
523 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
524 /* Add T.70 simplified header */
525 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT)
526 memcpy(skb_push(skb, 2), "\1\0", 2);
527 else
528 memcpy(skb_push(skb, 4), "\1\0\1\0", 4);
529 }
530 skb_queue_tail(&info->xmit_queue, skb);
531}
532
533/************************************************************
534 *
535 * Modem-functions
536 *
537 * mostly "stolen" from original Linux-serial.c and friends.
538 *
539 ************************************************************/
540
541/* The next routine is called once from within timer-interrupt
542 * triggered within isdn_tty_modem_ncarrier(). It calls
543 * isdn_tty_modem_result() to stuff a "NO CARRIER" Message
33f0f88f 544 * into the tty's buffer.
1da177e4
LT		 545 */
546static void
547isdn_tty_modem_do_ncarrier(unsigned long data)
548{
549 modem_info *info = (modem_info *) data;
550 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
551}
552
553/* Next routine is called, whenever the DTR-signal is raised.
554 * It checks the ncarrier-flag, and triggers the above routine
555 * when necessary. The ncarrier-flag is set, whenever DTR goes
556 * low.
557 */
558static void
475be4d8 559isdn_tty_modem_ncarrier(modem_info *info)
1da177e4
LT		 560{
561 if (info->ncarrier) {
562 info->nc_timer.expires = jiffies + HZ;
563 add_timer(&info->nc_timer);
564 }
565}
566
567/*
568 * return the usage calculated by si and layer 2 protocol
569 */
3e206b0a 570static int
1da177e4
LT		 571isdn_calc_usage(int si, int l2)
572{
573 int usg = ISDN_USAGE_MODEM;
574
575#ifdef CONFIG_ISDN_AUDIO
576 if (si == 1) {
475be4d8
JP		 577 switch (l2) {
578 case ISDN_PROTO_L2_MODEM:
579 usg = ISDN_USAGE_MODEM;
580 break;
1da177e4 581#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 582 case ISDN_PROTO_L2_FAX:
583 usg = ISDN_USAGE_FAX;
584 break;
1da177e4 585#endif
475be4d8
JP		 586 case ISDN_PROTO_L2_TRANS:
587 default:
588 usg = ISDN_USAGE_VOICE;
589 break;
1da177e4
LT		 590 }
591 }
592#endif
475be4d8 593 return (usg);
1da177e4
LT		 594}
595
596/* isdn_tty_dial() performs dialing of a tty an the necessary
597 * setup of the lower levels before that.
598 */
599static void
475be4d8 600isdn_tty_dial(char *n, modem_info *info, atemu *m)
1da177e4
LT		 601{
602 int usg = ISDN_USAGE_MODEM;
603 int si = 7;
604 int l2 = m->mdmreg[REG_L2PROT];
605 u_long flags;
606 isdn_ctrl cmd;
607 int i;
608 int j;
609
610 for (j = 7; j >= 0; j--)
611 if (m->mdmreg[REG_SI1] & (1 << j)) {
612 si = bit2si[j];
613 break;
614 }
615 usg = isdn_calc_usage(si, l2);
616#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 617 if ((si == 1) &&
618 (l2 != ISDN_PROTO_L2_MODEM)
1da177e4 619#ifdef CONFIG_ISDN_TTY_FAX
475be4d8 620 && (l2 != ISDN_PROTO_L2_FAX)
1da177e4
LT		 621#endif
622 ) {
623 l2 = ISDN_PROTO_L2_TRANS;
624 usg = ISDN_USAGE_VOICE;
625 }
626#endif
627 m->mdmreg[REG_SI1I] = si2bit[si];
628 spin_lock_irqsave(&dev->lock, flags);
629 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
630 if (i < 0) {
631 spin_unlock_irqrestore(&dev->lock, flags);
632 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
633 } else {
634 info->isdn_driver = dev->drvmap[i];
635 info->isdn_channel = dev->chanmap[i];
636 info->drv_index = i;
637 dev->m_idx[i] = info->line;
638 dev->usage[i] |= ISDN_USAGE_OUTGOING;
639 info->last_dir = 1;
640 strcpy(info->last_num, n);
641 isdn_info_update();
642 spin_unlock_irqrestore(&dev->lock, flags);
643 cmd.driver = info->isdn_driver;
644 cmd.arg = info->isdn_channel;
645 cmd.command = ISDN_CMD_CLREAZ;
646 isdn_command(&cmd);
647 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
648 cmd.driver = info->isdn_driver;
649 cmd.command = ISDN_CMD_SETEAZ;
650 isdn_command(&cmd);
651 cmd.driver = info->isdn_driver;
652 cmd.command = ISDN_CMD_SETL2;
653 info->last_l2 = l2;
654 cmd.arg = info->isdn_channel + (l2 << 8);
655 isdn_command(&cmd);
656 cmd.driver = info->isdn_driver;
657 cmd.command = ISDN_CMD_SETL3;
658 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
659#ifdef CONFIG_ISDN_TTY_FAX
660 if (l2 == ISDN_PROTO_L2_FAX) {
661 cmd.parm.fax = info->fax;
662 info->fax->direction = ISDN_TTY_FAX_CONN_OUT;
663 }
664#endif
665 isdn_command(&cmd);
666 cmd.driver = info->isdn_driver;
667 cmd.arg = info->isdn_channel;
668 sprintf(cmd.parm.setup.phone, "%s", n);
669 sprintf(cmd.parm.setup.eazmsn, "%s",
670 isdn_map_eaz2msn(m->msn, info->isdn_driver));
671 cmd.parm.setup.si1 = si;
672 cmd.parm.setup.si2 = m->mdmreg[REG_SI2];
673 cmd.command = ISDN_CMD_DIAL;
674 info->dialing = 1;
675 info->emu.carrierwait = 0;
676 strcpy(dev->num[i], n);
677 isdn_info_update();
678 isdn_command(&cmd);
679 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
680 }
681}
682
683/* isdn_tty_hangup() disassociates a tty from the real
684 * ISDN-line (hangup). The usage-status is cleared
685 * and some cleanup is done also.
686 */
687void
475be4d8 688isdn_tty_modem_hup(modem_info *info, int local)
1da177e4
LT		 689{
690 isdn_ctrl cmd;
691 int di, ch;
692
693 if (!info)
694 return;
695
696 di = info->isdn_driver;
697 ch = info->isdn_channel;
698 if (di < 0 || ch < 0)
699 return;
700
701 info->isdn_driver = -1;
702 info->isdn_channel = -1;
703
704#ifdef ISDN_DEBUG_MODEM_HUP
705 printk(KERN_DEBUG "Mhup ttyI%d\n", info->line);
706#endif
707 info->rcvsched = 0;
ba43294d 708 isdn_tty_flush_buffer(info->port.tty);
1da177e4
LT		 709 if (info->online) {
710 info->last_lhup = local;
711 info->online = 0;
712 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
713 }
714#ifdef CONFIG_ISDN_AUDIO
715 info->vonline = 0;
716#ifdef CONFIG_ISDN_TTY_FAX
717 info->faxonline = 0;
718 info->fax->phase = ISDN_FAX_PHASE_IDLE;
719#endif
720 info->emu.vpar[4] = 0;
721 info->emu.vpar[5] = 8;
3c7208f2
JJ		 722 kfree(info->dtmf_state);
723 info->dtmf_state = NULL;
724 kfree(info->silence_state);
725 info->silence_state = NULL;
726 kfree(info->adpcms);
727 info->adpcms = NULL;
728 kfree(info->adpcmr);
729 info->adpcmr = NULL;
1da177e4
LT		 730#endif
731 if ((info->msr & UART_MSR_RI) &&
475be4d8 732 (info->emu.mdmreg[REG_RUNG] & BIT_RUNG))
1da177e4
LT		 733 isdn_tty_modem_result(RESULT_RUNG, info);
734 info->msr &= ~(UART_MSR_DCD | UART_MSR_RI);
735 info->lsr |= UART_LSR_TEMT;
736
737 if (local) {
738 cmd.driver = di;
739 cmd.command = ISDN_CMD_HANGUP;
740 cmd.arg = ch;
741 isdn_command(&cmd);
742 }
743
744 isdn_all_eaz(di, ch);
745 info->emu.mdmreg[REG_RINGCNT] = 0;
746 isdn_free_channel(di, ch, 0);
747
748 if (info->drv_index >= 0) {
749 dev->m_idx[info->drv_index] = -1;
750 info->drv_index = -1;
751 }
752}
753
754/*
475be4d8 755 * Begin of a CAPI like interface, currently used only for
1da177e4
LT		 756 * supplementary service (CAPI 2.0 part III)
757 */
758#include <linux/isdn/capicmd.h>
07a97fe8 759#include <linux/module.h>
1da177e4
LT		 760
761int
762isdn_tty_capi_facility(capi_msg *cm) {
475be4d8 763 return (-1); /* dummy */
1da177e4
LT		 764}
765
766/* isdn_tty_suspend() tries to suspend the current tty connection
767 */
768static void
475be4d8 769isdn_tty_suspend(char *id, modem_info *info, atemu *m)
1da177e4
LT		 770{
771 isdn_ctrl cmd;
475be4d8 772
1da177e4
LT		 773 int l;
774
775 if (!info)
776 return;
777
778#ifdef ISDN_DEBUG_MODEM_SERVICES
779 printk(KERN_DEBUG "Msusp ttyI%d\n", info->line);
780#endif
781 l = strlen(id);
782 if ((info->isdn_driver >= 0)) {
475be4d8 783 cmd.parm.cmsg.Length = l + 18;
1da177e4
LT		 784 cmd.parm.cmsg.Command = CAPI_FACILITY;
785 cmd.parm.cmsg.Subcommand = CAPI_REQ;
786 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
787 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
788 cmd.parm.cmsg.para[1] = 0;
789 cmd.parm.cmsg.para[2] = l + 3;
790 cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */
791 cmd.parm.cmsg.para[4] = 0;
792 cmd.parm.cmsg.para[5] = l;
793 strncpy(&cmd.parm.cmsg.para[6], id, l);
794 cmd.command = CAPI_PUT_MESSAGE;
795 cmd.driver = info->isdn_driver;
796 cmd.arg = info->isdn_channel;
797 isdn_command(&cmd);
798 }
799}
800
801/* isdn_tty_resume() tries to resume a suspended call
25985edc 802 * setup of the lower levels before that. unfortunately here is no
1da177e4
LT		 803 * checking for compatibility of used protocols implemented by Q931
804 * It does the same things like isdn_tty_dial, the last command
805 * is different, may be we can merge it.
806 */
807
808static void
475be4d8 809isdn_tty_resume(char *id, modem_info *info, atemu *m)
1da177e4
LT		 810{
811 int usg = ISDN_USAGE_MODEM;
812 int si = 7;
813 int l2 = m->mdmreg[REG_L2PROT];
814 isdn_ctrl cmd;
815 ulong flags;
816 int i;
817 int j;
818 int l;
819
820 l = strlen(id);
821 for (j = 7; j >= 0; j--)
822 if (m->mdmreg[REG_SI1] & (1 << j)) {
823 si = bit2si[j];
824 break;
825 }
826 usg = isdn_calc_usage(si, l2);
827#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 828 if ((si == 1) &&
829 (l2 != ISDN_PROTO_L2_MODEM)
1da177e4 830#ifdef CONFIG_ISDN_TTY_FAX
475be4d8 831 && (l2 != ISDN_PROTO_L2_FAX)
1da177e4
LT		 832#endif
833 ) {
834 l2 = ISDN_PROTO_L2_TRANS;
835 usg = ISDN_USAGE_VOICE;
836 }
837#endif
838 m->mdmreg[REG_SI1I] = si2bit[si];
839 spin_lock_irqsave(&dev->lock, flags);
840 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
841 if (i < 0) {
842 spin_unlock_irqrestore(&dev->lock, flags);
843 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
844 } else {
845 info->isdn_driver = dev->drvmap[i];
846 info->isdn_channel = dev->chanmap[i];
847 info->drv_index = i;
848 dev->m_idx[i] = info->line;
849 dev->usage[i] |= ISDN_USAGE_OUTGOING;
850 info->last_dir = 1;
851// strcpy(info->last_num, n);
852 isdn_info_update();
853 spin_unlock_irqrestore(&dev->lock, flags);
854 cmd.driver = info->isdn_driver;
855 cmd.arg = info->isdn_channel;
856 cmd.command = ISDN_CMD_CLREAZ;
857 isdn_command(&cmd);
858 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
859 cmd.driver = info->isdn_driver;
860 cmd.command = ISDN_CMD_SETEAZ;
861 isdn_command(&cmd);
862 cmd.driver = info->isdn_driver;
863 cmd.command = ISDN_CMD_SETL2;
864 info->last_l2 = l2;
865 cmd.arg = info->isdn_channel + (l2 << 8);
866 isdn_command(&cmd);
867 cmd.driver = info->isdn_driver;
868 cmd.command = ISDN_CMD_SETL3;
869 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
870 isdn_command(&cmd);
871 cmd.driver = info->isdn_driver;
872 cmd.arg = info->isdn_channel;
475be4d8 873 cmd.parm.cmsg.Length = l + 18;
1da177e4
LT		 874 cmd.parm.cmsg.Command = CAPI_FACILITY;
875 cmd.parm.cmsg.Subcommand = CAPI_REQ;
876 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
877 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
878 cmd.parm.cmsg.para[1] = 0;
475be4d8 879 cmd.parm.cmsg.para[2] = l + 3;
1da177e4
LT		 880 cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */
881 cmd.parm.cmsg.para[4] = 0;
882 cmd.parm.cmsg.para[5] = l;
883 strncpy(&cmd.parm.cmsg.para[6], id, l);
475be4d8 884 cmd.command = CAPI_PUT_MESSAGE;
1da177e4
LT		 885 info->dialing = 1;
886// strcpy(dev->num[i], n);
887 isdn_info_update();
888 isdn_command(&cmd);
889 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
890 }
891}
892
893/* isdn_tty_send_msg() sends a message to a HL driver
894 * This is used for hybrid modem cards to send AT commands to it
895 */
896
897static void
475be4d8 898isdn_tty_send_msg(modem_info *info, atemu *m, char *msg)
1da177e4
LT		 899{
900 int usg = ISDN_USAGE_MODEM;
901 int si = 7;
902 int l2 = m->mdmreg[REG_L2PROT];
903 isdn_ctrl cmd;
904 ulong flags;
905 int i;
906 int j;
907 int l;
908
909 l = strlen(msg);
910 if (!l) {
911 isdn_tty_modem_result(RESULT_ERROR, info);
912 return;
913 }
914 for (j = 7; j >= 0; j--)
915 if (m->mdmreg[REG_SI1] & (1 << j)) {
916 si = bit2si[j];
917 break;
918 }
919 usg = isdn_calc_usage(si, l2);
920#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 921 if ((si == 1) &&
922 (l2 != ISDN_PROTO_L2_MODEM)
1da177e4 923#ifdef CONFIG_ISDN_TTY_FAX
475be4d8 924 && (l2 != ISDN_PROTO_L2_FAX)
1da177e4
LT		 925#endif
926 ) {
927 l2 = ISDN_PROTO_L2_TRANS;
928 usg = ISDN_USAGE_VOICE;
929 }
930#endif
931 m->mdmreg[REG_SI1I] = si2bit[si];
932 spin_lock_irqsave(&dev->lock, flags);
933 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
934 if (i < 0) {
935 spin_unlock_irqrestore(&dev->lock, flags);
936 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
937 } else {
938 info->isdn_driver = dev->drvmap[i];
939 info->isdn_channel = dev->chanmap[i];
940 info->drv_index = i;
941 dev->m_idx[i] = info->line;
942 dev->usage[i] |= ISDN_USAGE_OUTGOING;
943 info->last_dir = 1;
944 isdn_info_update();
945 spin_unlock_irqrestore(&dev->lock, flags);
946 cmd.driver = info->isdn_driver;
947 cmd.arg = info->isdn_channel;
948 cmd.command = ISDN_CMD_CLREAZ;
949 isdn_command(&cmd);
950 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
951 cmd.driver = info->isdn_driver;
952 cmd.command = ISDN_CMD_SETEAZ;
953 isdn_command(&cmd);
954 cmd.driver = info->isdn_driver;
955 cmd.command = ISDN_CMD_SETL2;
956 info->last_l2 = l2;
957 cmd.arg = info->isdn_channel + (l2 << 8);
958 isdn_command(&cmd);
959 cmd.driver = info->isdn_driver;
960 cmd.command = ISDN_CMD_SETL3;
961 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
962 isdn_command(&cmd);
963 cmd.driver = info->isdn_driver;
964 cmd.arg = info->isdn_channel;
475be4d8 965 cmd.parm.cmsg.Length = l + 14;
1da177e4
LT		 966 cmd.parm.cmsg.Command = CAPI_MANUFACTURER;
967 cmd.parm.cmsg.Subcommand = CAPI_REQ;
968 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
475be4d8 969 cmd.parm.cmsg.para[0] = l + 1;
1da177e4 970 strncpy(&cmd.parm.cmsg.para[1], msg, l);
475be4d8
JP		 971 cmd.parm.cmsg.para[l + 1] = 0xd;
972 cmd.command = CAPI_PUT_MESSAGE;
1da177e4
LT		 973/* info->dialing = 1;
974 strcpy(dev->num[i], n);
975 isdn_info_update();
976*/
977 isdn_command(&cmd);
978 }
979}
980
981static inline int
982isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine)
983{
984#ifdef MODEM_PARANOIA_CHECK
985 if (!info) {
986 printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n",
475be4d8 987 name, routine);
1da177e4
LT		 988 return 1;
989 }
990 if (info->magic != ISDN_ASYNC_MAGIC) {
991 printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n",
992 name, routine);
993 return 1;
994 }
995#endif
996 return 0;
997}
998
999/*
1000 * This routine is called to set the UART divisor registers to match
1001 * the specified baud rate for a serial port.
1002 */
1003static void
475be4d8 1004isdn_tty_change_speed(modem_info *info)
1da177e4 1005{
265d6f00 1006 struct tty_port *port = &info->port;
1da177e4 1007 uint cflag,
475be4d8
JP		 1008 cval,
1009 quot;
1da177e4
LT		 1010 int i;
1011
265d6f00 1012 if (!port->tty || !port->tty->termios)
1da177e4 1013 return;
265d6f00 1014 cflag = port->tty->termios->c_cflag;
1da177e4
LT		 1015
1016 quot = i = cflag & CBAUD;
1017 if (i & CBAUDEX) {
1018 i &= ~CBAUDEX;
1019 if (i < 1 || i > 2)
265d6f00 1020 port->tty->termios->c_cflag &= ~CBAUDEX;
1da177e4
LT		 1021 else
1022 i += 15;
1023 }
1024 if (quot) {
1025 info->mcr |= UART_MCR_DTR;
1026 isdn_tty_modem_ncarrier(info);
1027 } else {
1028 info->mcr &= ~UART_MCR_DTR;
1029 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1030#ifdef ISDN_DEBUG_MODEM_HUP
1031 printk(KERN_DEBUG "Mhup in changespeed\n");
1032#endif
1033 if (info->online)
1034 info->ncarrier = 1;
1035 isdn_tty_modem_reset_regs(info, 0);
1036 isdn_tty_modem_hup(info, 1);
1037 }
1038 return;
1039 }
1040 /* byte size and parity */
1041 cval = cflag & (CSIZE | CSTOPB);
1042 cval >>= 4;
1043 if (cflag & PARENB)
1044 cval |= UART_LCR_PARITY;
1045 if (!(cflag & PARODD))
1046 cval |= UART_LCR_EPAR;
1da177e4
LT		 1047
1048 /* CTS flow control flag and modem status interrupts */
1049 if (cflag & CRTSCTS) {
265d6f00 1050 port->flags |= ASYNC_CTS_FLOW;
1da177e4 1051 } else
265d6f00 1052 port->flags &= ~ASYNC_CTS_FLOW;
1da177e4 1053 if (cflag & CLOCAL)
265d6f00 1054 port->flags &= ~ASYNC_CHECK_CD;
1da177e4 1055 else {
265d6f00 1056 port->flags |= ASYNC_CHECK_CD;
1da177e4
LT		 1057 }
1058}
1059
1060static int
475be4d8 1061isdn_tty_startup(modem_info *info)
1da177e4 1062{
48decc1c 1063 if (info->port.flags & ASYNC_INITIALIZED)
1da177e4
LT		 1064 return 0;
1065 isdn_lock_drivers();
1066#ifdef ISDN_DEBUG_MODEM_OPEN
1067 printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line);
1068#endif
1069 /*
1070 * Now, initialize the UART
1071 */
1072 info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
ba43294d
JS		 1073 if (info->port.tty)
1074 clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
1da177e4
LT		 1075 /*
1076 * and set the speed of the serial port
1077 */
1078 isdn_tty_change_speed(info);
1079
48decc1c 1080 info->port.flags |= ASYNC_INITIALIZED;
1da177e4
LT		 1081 info->msr |= (UART_MSR_DSR | UART_MSR_CTS);
1082 info->send_outstanding = 0;
1083 return 0;
1084}
1085
1086/*
1087 * This routine will shutdown a serial port; interrupts are disabled, and
1088 * DTR is dropped if the hangup on close termio flag is on.
1089 */
1090static void
475be4d8 1091isdn_tty_shutdown(modem_info *info)
1da177e4 1092{
48decc1c 1093 if (!(info->port.flags & ASYNC_INITIALIZED))
1da177e4
LT		 1094 return;
1095#ifdef ISDN_DEBUG_MODEM_OPEN
1096 printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line);
1097#endif
1098 isdn_unlock_drivers();
1099 info->msr &= ~UART_MSR_RI;
ba43294d 1100 if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) {
1da177e4
LT		 1101 info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
1102 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1103 isdn_tty_modem_reset_regs(info, 0);
1104#ifdef ISDN_DEBUG_MODEM_HUP
1105 printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n");
1106#endif
1107 isdn_tty_modem_hup(info, 1);
1108 }
1109 }
ba43294d
JS		 1110 if (info->port.tty)
1111 set_bit(TTY_IO_ERROR, &info->port.tty->flags);
1da177e4 1112
48decc1c 1113 info->port.flags &= ~ASYNC_INITIALIZED;
1da177e4
LT		 1114}
1115
1116/* isdn_tty_write() is the main send-routine. It is called from the upper
1117 * levels within the kernel to perform sending data. Depending on the
1118 * online-flag it either directs output to the at-command-interpreter or
1119 * to the lower level. Additional tasks done here:
1120 * - If online, check for escape-sequence (+++)
1121 * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes.
1122 * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed.
1123 * - If dialing, abort dial.
1124 */
1125static int
475be4d8 1126isdn_tty_write(struct tty_struct *tty, const u_char *buf, int count)
1da177e4
LT		 1127{
1128 int c;
1129 int total = 0;
1130 modem_info *info = (modem_info *) tty->driver_data;
1131 atemu *m = &info->emu;
1132
1133 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write"))
1134 return 0;
1135 /* See isdn_tty_senddown() */
1136 atomic_inc(&info->xmit_lock);
1137 while (1) {
1138 c = count;
1139 if (c > info->xmit_size - info->xmit_count)
1140 c = info->xmit_size - info->xmit_count;
1141 if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize)
1142 c = dev->drv[info->isdn_driver]->maxbufsize;
1143 if (c <= 0)
1144 break;
1145 if ((info->online > 1)
1146#ifdef CONFIG_ISDN_AUDIO
1147 || (info->vonline & 3)
1148#endif
1149 ) {
1150#ifdef CONFIG_ISDN_AUDIO
1151 if (!info->vonline)
1152#endif
1153 isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c,
1154 &(m->pluscount),
1155 &(m->lastplus));
82e46b31 1156 memcpy(&info->port.xmit_buf[info->xmit_count], buf, c);
1da177e4
LT		 1157#ifdef CONFIG_ISDN_AUDIO
1158 if (info->vonline) {
1159 int cc = isdn_tty_handleDLEdown(info, m, c);
1160 if (info->vonline & 2) {
1161 if (!cc) {
1162 /* If DLE decoding results in zero-transmit, but
1163 * c originally was non-zero, do a wakeup.
1164 */
1165 tty_wakeup(tty);
1166 info->msr |= UART_MSR_CTS;
1167 info->lsr |= UART_LSR_TEMT;
1168 }
1169 info->xmit_count += cc;
1170 }
1171 if ((info->vonline & 3) == 1) {
1172 /* Do NOT handle Ctrl-Q or Ctrl-S
1173 * when in full-duplex audio mode.
1174 */
1175 if (isdn_tty_end_vrx(buf, c)) {
1176 info->vonline &= ~1;
1177#ifdef ISDN_DEBUG_MODEM_VOICE
1178 printk(KERN_DEBUG
1179 "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n",
1180 info->line);
1181#endif
1182 isdn_tty_at_cout("\020\003\r\nVCON\r\n", info);
1183 }
1184 }
1185 } else
475be4d8
JP		 1186 if (TTY_IS_FCLASS1(info)) {
1187 int cc = isdn_tty_handleDLEdown(info, m, c);
1188
1189 if (info->vonline & 4) { /* ETX seen */
1190 isdn_ctrl c;
1191
1192 c.command = ISDN_CMD_FAXCMD;
1193 c.driver = info->isdn_driver;
1194 c.arg = info->isdn_channel;
1195 c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL;
1196 c.parm.aux.subcmd = ETX;
1197 isdn_command(&c);
1198 }
1199 info->vonline = 0;
1da177e4 1200#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8 1201 printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c);
1da177e4 1202#endif
475be4d8
JP		 1203 info->xmit_count += cc;
1204 } else
1da177e4 1205#endif
475be4d8 1206 info->xmit_count += c;
1da177e4
LT		 1207 } else {
1208 info->msr |= UART_MSR_CTS;
1209 info->lsr |= UART_LSR_TEMT;
1210 if (info->dialing) {
1211 info->dialing = 0;
1212#ifdef ISDN_DEBUG_MODEM_HUP
1213 printk(KERN_DEBUG "Mhup in isdn_tty_write\n");
1214#endif
1215 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
1216 isdn_tty_modem_hup(info, 1);
1217 } else
1218 c = isdn_tty_edit_at(buf, c, info);
1219 }
1220 buf += c;
1221 count -= c;
1222 total += c;
1223 }
1224 atomic_dec(&info->xmit_lock);
b03efcfb 1225 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
1da177e4
LT		 1226 if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
1227 isdn_tty_senddown(info);
1228 isdn_tty_tint(info);
1229 }
1230 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1231 }
1232 return total;
1233}
1234
1235static int
1236isdn_tty_write_room(struct tty_struct *tty)
1237{
1238 modem_info *info = (modem_info *) tty->driver_data;
1239 int ret;
1240
1241 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room"))
1242 return 0;
1243 if (!info->online)
1244 return info->xmit_size;
1245 ret = info->xmit_size - info->xmit_count;
1246 return (ret < 0) ? 0 : ret;
1247}
1248
1249static int
1250isdn_tty_chars_in_buffer(struct tty_struct *tty)
1251{
1252 modem_info *info = (modem_info *) tty->driver_data;
1253
1254 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer"))
1255 return 0;
1256 if (!info->online)
1257 return 0;
1258 return (info->xmit_count);
1259}
1260
1261static void
1262isdn_tty_flush_buffer(struct tty_struct *tty)
1263{
1264 modem_info *info;
1265
1266 if (!tty) {
1267 return;
1268 }
1269 info = (modem_info *) tty->driver_data;
1270 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) {
1271 return;
1272 }
1273 isdn_tty_cleanup_xmit(info);
1274 info->xmit_count = 0;
1da177e4
LT		 1275 tty_wakeup(tty);
1276}
1277
1278static void
1279isdn_tty_flush_chars(struct tty_struct *tty)
1280{
1281 modem_info *info = (modem_info *) tty->driver_data;
1282
1283 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
1284 return;
b03efcfb 1285 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
1da177e4
LT		 1286 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1287}
1288
1289/*
1290 * ------------------------------------------------------------
1291 * isdn_tty_throttle()
1292 *
1293 * This routine is called by the upper-layer tty layer to signal that
1294 * incoming characters should be throttled.
1295 * ------------------------------------------------------------
1296 */
1297static void
1298isdn_tty_throttle(struct tty_struct *tty)
1299{
1300 modem_info *info = (modem_info *) tty->driver_data;
1301
1302 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle"))
1303 return;
1304 if (I_IXOFF(tty))
1305 info->x_char = STOP_CHAR(tty);
1306 info->mcr &= ~UART_MCR_RTS;
1307}
1308
1309static void
1310isdn_tty_unthrottle(struct tty_struct *tty)
1311{
1312 modem_info *info = (modem_info *) tty->driver_data;
1313
1314 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle"))
1315 return;
1316 if (I_IXOFF(tty)) {
1317 if (info->x_char)
1318 info->x_char = 0;
1319 else
1320 info->x_char = START_CHAR(tty);
1321 }
1322 info->mcr |= UART_MCR_RTS;
1323}
1324
1325/*
1326 * ------------------------------------------------------------
1327 * isdn_tty_ioctl() and friends
1328 * ------------------------------------------------------------
1329 */
1330
1331/*
1332 * isdn_tty_get_lsr_info - get line status register info
1333 *
1334 * Purpose: Let user call ioctl() to get info when the UART physically
1335 * is emptied. On bus types like RS485, the transmitter must
1336 * release the bus after transmitting. This must be done when
1337 * the transmit shift register is empty, not be done when the
1338 * transmit holding register is empty. This functionality
1339 * allows RS485 driver to be written in user space.
1340 */
1341static int
475be4d8 1342isdn_tty_get_lsr_info(modem_info *info, uint __user *value)
1da177e4
LT		 1343{
1344 u_char status;
1345 uint result;
1346
1347 status = info->lsr;
1348 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1349 return put_user(result, value);
1350}
1351
1352
1353static int
60b33c13 1354isdn_tty_tiocmget(struct tty_struct *tty)
1da177e4
LT		 1355{
1356 modem_info *info = (modem_info *) tty->driver_data;
1357 u_char control, status;
1358
156f1ed6 1359 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1da177e4
LT		 1360 return -ENODEV;
1361 if (tty->flags & (1 << TTY_IO_ERROR))
1362 return -EIO;
1363
72250d44 1364 mutex_lock(&modem_info_mutex);
1da177e4
LT		 1365#ifdef ISDN_DEBUG_MODEM_IOCTL
1366 printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
1367#endif
1368
1369 control = info->mcr;
1370 status = info->msr;
72250d44 1371 mutex_unlock(&modem_info_mutex);
1da177e4 1372 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
475be4d8
JP		 1373 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
1374 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
1375 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
1376 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
1377 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1da177e4
LT		 1378}
1379
1380static int
20b9d177 1381isdn_tty_tiocmset(struct tty_struct *tty,
475be4d8 1382 unsigned int set, unsigned int clear)
1da177e4
LT		 1383{
1384 modem_info *info = (modem_info *) tty->driver_data;
1385
156f1ed6 1386 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1da177e4
LT		 1387 return -ENODEV;
1388 if (tty->flags & (1 << TTY_IO_ERROR))
1389 return -EIO;
1390
1391#ifdef ISDN_DEBUG_MODEM_IOCTL
1392 printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
1393#endif
1394
72250d44 1395 mutex_lock(&modem_info_mutex);
1da177e4
LT		 1396 if (set & TIOCM_RTS)
1397 info->mcr |= UART_MCR_RTS;
1398 if (set & TIOCM_DTR) {
1399 info->mcr |= UART_MCR_DTR;
1400 isdn_tty_modem_ncarrier(info);
1401 }
1402
1403 if (clear & TIOCM_RTS)
1404 info->mcr &= ~UART_MCR_RTS;
1405 if (clear & TIOCM_DTR) {
1406 info->mcr &= ~UART_MCR_DTR;
1407 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1408 isdn_tty_modem_reset_regs(info, 0);
1409#ifdef ISDN_DEBUG_MODEM_HUP
1410 printk(KERN_DEBUG "Mhup in TIOCMSET\n");
1411#endif
1412 if (info->online)
1413 info->ncarrier = 1;
1414 isdn_tty_modem_hup(info, 1);
1415 }
1416 }
72250d44 1417 mutex_unlock(&modem_info_mutex);
1da177e4
LT		 1418 return 0;
1419}
1420
1421static int
6caa76b7 1422isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg)
1da177e4
LT		 1423{
1424 modem_info *info = (modem_info *) tty->driver_data;
1425 int retval;
1426
1427 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
1428 return -ENODEV;
1429 if (tty->flags & (1 << TTY_IO_ERROR))
1430 return -EIO;
1431 switch (cmd) {
475be4d8 1432 case TCSBRK: /* SVID version: non-zero arg --> no break */
1da177e4 1433#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8
JP		 1434 printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
1435#endif
1436 retval = tty_check_change(tty);
1437 if (retval)
1438 return retval;
1439 tty_wait_until_sent(tty, 0);
1440 return 0;
1441 case TCSBRKP: /* support for POSIX tcsendbreak() */
1da177e4 1442#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8
JP		 1443 printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
1444#endif
1445 retval = tty_check_change(tty);
1446 if (retval)
1447 return retval;
1448 tty_wait_until_sent(tty, 0);
1449 return 0;
1450 case TIOCSERGETLSR: /* Get line status register */
1da177e4 1451#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8 1452 printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
1da177e4 1453#endif
475be4d8
JP		 1454 return isdn_tty_get_lsr_info(info, (uint __user *) arg);
1455 default:
1da177e4 1456#ifdef ISDN_DEBUG_MODEM_IOCTL
475be4d8 1457 printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line);
1da177e4 1458#endif
475be4d8 1459 return -ENOIOCTLCMD;
1da177e4
LT		 1460 }
1461 return 0;
1462}
1463
1464static void
606d099c 1465isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4
LT		 1466{
1467 modem_info *info = (modem_info *) tty->driver_data;
1468
1469 if (!old_termios)
1470 isdn_tty_change_speed(info);
1471 else {
6e4d376c
AC		 1472 if (tty->termios->c_cflag == old_termios->c_cflag &&
1473 tty->termios->c_ispeed == old_termios->c_ispeed &&
1474 tty->termios->c_ospeed == old_termios->c_ospeed)
1da177e4
LT		 1475 return;
1476 isdn_tty_change_speed(info);
1477 if ((old_termios->c_cflag & CRTSCTS) &&
6e4d376c 1478 !(tty->termios->c_cflag & CRTSCTS))
1da177e4 1479 tty->hw_stopped = 0;
1da177e4
LT		 1480 }
1481}
1482
1483/*
1484 * ------------------------------------------------------------
1485 * isdn_tty_open() and friends
1486 * ------------------------------------------------------------
1487 */
042b9e7c 1488
1da177e4 1489static int
475be4d8 1490isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *info)
1da177e4 1491{
265d6f00 1492 struct tty_port *port = &info->port;
1da177e4
LT		 1493 DECLARE_WAITQUEUE(wait, NULL);
1494 int do_clocal = 0;
1495 int retval;
1496
1497 /*
1498 * If the device is in the middle of being closed, then block
1499 * until it's done, and then try again.
1500 */
1501 if (tty_hung_up_p(filp) ||
265d6f00
JS		 1502 (port->flags & ASYNC_CLOSING)) {
1503 if (port->flags & ASYNC_CLOSING)
1504 interruptible_sleep_on(&port->close_wait);
1da177e4 1505#ifdef MODEM_DO_RESTART
265d6f00 1506 if (port->flags & ASYNC_HUP_NOTIFY)
1da177e4
LT		 1507 return -EAGAIN;
1508 else
1509 return -ERESTARTSYS;
1510#else
1511 return -EAGAIN;
1512#endif
1513 }
1514 /*
1515 * If non-blocking mode is set, then make the check up front
1516 * and then exit.
1517 */
1518 if ((filp->f_flags & O_NONBLOCK) ||
1519 (tty->flags & (1 << TTY_IO_ERROR))) {
265d6f00 1520 port->flags |= ASYNC_NORMAL_ACTIVE;
1da177e4
LT		 1521 return 0;
1522 }
05eb48be
JS		 1523 if (tty->termios->c_cflag & CLOCAL)
1524 do_clocal = 1;
1da177e4
LT		 1525 /*
1526 * Block waiting for the carrier detect and the line to become
1527 * free (i.e., not in use by the callout). While we are in
1528 * this loop, info->count is dropped by one, so that
1529 * isdn_tty_close() knows when to free things. We restore it upon
1530 * exit, either normal or abnormal.
1531 */
1532 retval = 0;
265d6f00 1533 add_wait_queue(&port->open_wait, &wait);
1da177e4
LT		 1534#ifdef ISDN_DEBUG_MODEM_OPEN
1535 printk(KERN_DEBUG "isdn_tty_block_til_ready before block: ttyi%d, count = %d\n",
1536 info->line, info->count);
1537#endif
1538 if (!(tty_hung_up_p(filp)))
265d6f00
JS		 1539 port->count--;
1540 port->blocked_open++;
1da177e4
LT		 1541 while (1) {
1542 set_current_state(TASK_INTERRUPTIBLE);
1543 if (tty_hung_up_p(filp) ||
265d6f00 1544 !(port->flags & ASYNC_INITIALIZED)) {
1da177e4 1545#ifdef MODEM_DO_RESTART
265d6f00 1546 if (port->flags & ASYNC_HUP_NOTIFY)
1da177e4
LT		 1547 retval = -EAGAIN;
1548 else
1549 retval = -ERESTARTSYS;
1550#else
1551 retval = -EAGAIN;
1552#endif
1553 break;
1554 }
265d6f00 1555 if (!(port->flags & ASYNC_CLOSING) &&
042b9e7c 1556 (do_clocal || tty_port_carrier_raised(port))) {
1da177e4
LT		 1557 break;
1558 }
1559 if (signal_pending(current)) {
1560 retval = -ERESTARTSYS;
1561 break;
1562 }
1563#ifdef ISDN_DEBUG_MODEM_OPEN
1564 printk(KERN_DEBUG "isdn_tty_block_til_ready blocking: ttyi%d, count = %d\n",
265d6f00 1565 info->line, port->count);
1da177e4
LT		 1566#endif
1567 schedule();
1568 }
1569 current->state = TASK_RUNNING;
265d6f00 1570 remove_wait_queue(&port->open_wait, &wait);
1da177e4 1571 if (!tty_hung_up_p(filp))
265d6f00
JS		 1572 port->count++;
1573 port->blocked_open--;
1da177e4
LT		 1574#ifdef ISDN_DEBUG_MODEM_OPEN
1575 printk(KERN_DEBUG "isdn_tty_block_til_ready after blocking: ttyi%d, count = %d\n",
265d6f00 1576 info->line, port->count);
1da177e4
LT		 1577#endif
1578 if (retval)
1579 return retval;
265d6f00 1580 port->flags |= ASYNC_NORMAL_ACTIVE;
1da177e4
LT		 1581 return 0;
1582}
1583
1584/*
1585 * This routine is called whenever a serial port is opened. It
1586 * enables interrupts for a serial port, linking in its async structure into
1587 * the IRQ chain. It also performs the serial-specific
1588 * initialization for the tty structure.
1589 */
1590static int
1591isdn_tty_open(struct tty_struct *tty, struct file *filp)
1592{
265d6f00 1593 struct tty_port *port;
1da177e4 1594 modem_info *info;
410235fd 1595 int retval;
1da177e4 1596
410235fd 1597 info = &dev->mdm.info[tty->index];
1da177e4
LT		 1598 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))
1599 return -ENODEV;
265d6f00 1600 port = &info->port;
1da177e4 1601#ifdef ISDN_DEBUG_MODEM_OPEN
475be4d8 1602 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
265d6f00 1603 port->count);
1da177e4 1604#endif
265d6f00 1605 port->count++;
1da177e4 1606 tty->driver_data = info;
265d6f00
JS		 1607 port->tty = tty;
1608 tty->port = port;
1da177e4
LT		 1609 /*
1610 * Start up serial port
1611 */
1612 retval = isdn_tty_startup(info);
1613 if (retval) {
1614#ifdef ISDN_DEBUG_MODEM_OPEN
1615 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1616#endif
1da177e4
LT		 1617 return retval;
1618 }
1619 retval = isdn_tty_block_til_ready(tty, filp, info);
1620 if (retval) {
1621#ifdef ISDN_DEBUG_MODEM_OPEN
1622 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1623#endif
1da177e4
LT		 1624 return retval;
1625 }
1626#ifdef ISDN_DEBUG_MODEM_OPEN
1627 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1628#endif
1629 dev->modempoll++;
1630#ifdef ISDN_DEBUG_MODEM_OPEN
1631 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1632#endif
1633 return 0;
1634}
1635
1636static void
1637isdn_tty_close(struct tty_struct *tty, struct file *filp)
1638{
1639 modem_info *info = (modem_info *) tty->driver_data;
265d6f00 1640 struct tty_port *port = &info->port;
1da177e4
LT		 1641 ulong timeout;
1642
1643 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1644 return;
1645 if (tty_hung_up_p(filp)) {
1646#ifdef ISDN_DEBUG_MODEM_OPEN
1647 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1648#endif
1649 return;
1650 }
265d6f00 1651 if ((tty->count == 1) && (port->count != 1)) {
1da177e4
LT		 1652 /*
1653 * Uh, oh. tty->count is 1, which means that the tty
1654 * structure will be freed. Info->count should always
1655 * be one in these conditions. If it's greater than
1656 * one, we've got real problems, since it means the
1657 * serial port won't be shutdown.
1658 */
1659 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
265d6f00
JS		 1660 "info->count is %d\n", port->count);
1661 port->count = 1;
1da177e4 1662 }
265d6f00 1663 if (--port->count < 0) {
1da177e4 1664 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
265d6f00
JS		 1665 info->line, port->count);
1666 port->count = 0;
1da177e4 1667 }
265d6f00 1668 if (port->count) {
1da177e4
LT		 1669#ifdef ISDN_DEBUG_MODEM_OPEN
1670 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1671#endif
1672 return;
1673 }
265d6f00 1674 port->flags |= ASYNC_CLOSING;
1da177e4
LT		 1675
1676 tty->closing = 1;
1677 /*
1678 * At this point we stop accepting input. To do this, we
1679 * disable the receive line status interrupts, and tell the
1680 * interrupt driver to stop checking the data ready bit in the
1681 * line status register.
1682 */
265d6f00 1683 if (port->flags & ASYNC_INITIALIZED) {
0b058353 1684 tty_wait_until_sent_from_close(tty, 3000); /* 30 seconds timeout */
1da177e4
LT		 1685 /*
1686 * Before we drop DTR, make sure the UART transmitter
1687 * has completely drained; this is especially
1688 * important if there is a transmit FIFO!
1689 */
1690 timeout = jiffies + HZ;
1691 while (!(info->lsr & UART_LSR_TEMT)) {
24763c48 1692 schedule_timeout_interruptible(20);
475be4d8 1693 if (time_after(jiffies, timeout))
1da177e4
LT		 1694 break;
1695 }
1696 }
1697 dev->modempoll--;
1698 isdn_tty_shutdown(info);
978e595f 1699 isdn_tty_flush_buffer(tty);
1da177e4 1700 tty_ldisc_flush(tty);
265d6f00 1701 port->tty = NULL;
1da177e4 1702 info->ncarrier = 0;
4330d663
JS		 1703
1704 tty_port_close_end(port, tty);
1da177e4
LT		 1705#ifdef ISDN_DEBUG_MODEM_OPEN
1706 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1707#endif
1708}
1709
1710/*
1711 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1712 */
1713static void
1714isdn_tty_hangup(struct tty_struct *tty)
1715{
1716 modem_info *info = (modem_info *) tty->driver_data;
265d6f00 1717 struct tty_port *port = &info->port;
1da177e4
LT		 1718
1719 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1720 return;
1721 isdn_tty_shutdown(info);
265d6f00
JS		 1722 port->count = 0;
1723 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1724 port->tty = NULL;
1725 wake_up_interruptible(&port->open_wait);
1da177e4
LT		 1726}
1727
1728/* This routine initializes all emulator-data.
1729 */
1730static void
475be4d8 1731isdn_tty_reset_profile(atemu *m)
1da177e4
LT		 1732{
1733 m->profile[0] = 0;
1734 m->profile[1] = 0;
1735 m->profile[2] = 43;
1736 m->profile[3] = 13;
1737 m->profile[4] = 10;
1738 m->profile[5] = 8;
1739 m->profile[6] = 3;
1740 m->profile[7] = 60;
1741 m->profile[8] = 2;
1742 m->profile[9] = 6;
1743 m->profile[10] = 7;
1744 m->profile[11] = 70;
1745 m->profile[12] = 0x45;
1746 m->profile[13] = 4;
1747 m->profile[14] = ISDN_PROTO_L2_X75I;
1748 m->profile[15] = ISDN_PROTO_L3_TRANS;
1749 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1750 m->profile[17] = ISDN_MODEM_WINSIZE;
1751 m->profile[18] = 4;
1752 m->profile[19] = 0;
1753 m->profile[20] = 0;
1754 m->profile[23] = 0;
1755 m->pmsn[0] = '\0';
1756 m->plmsn[0] = '\0';
1757}
1758
1759#ifdef CONFIG_ISDN_AUDIO
1760static void
475be4d8 1761isdn_tty_modem_reset_vpar(atemu *m)
1da177e4
LT		 1762{
1763 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1764 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1765 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1766 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1767 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1768 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1769}
1770#endif
1771
1772#ifdef CONFIG_ISDN_TTY_FAX
1773static void
475be4d8 1774isdn_tty_modem_reset_faxpar(modem_info *info)
1da177e4
LT		 1775{
1776 T30_s *f = info->fax;
1777
1778 f->code = 0;
1779 f->phase = ISDN_FAX_PHASE_IDLE;
1780 f->direction = 0;
1781 f->resolution = 1; /* fine */
1782 f->rate = 5; /* 14400 bit/s */
1783 f->width = 0;
1784 f->length = 0;
1785 f->compression = 0;
1786 f->ecm = 0;
1787 f->binary = 0;
1788 f->scantime = 0;
1789 memset(&f->id[0], 32, FAXIDLEN - 1);
1790 f->id[FAXIDLEN - 1] = 0;
1791 f->badlin = 0;
1792 f->badmul = 0;
1793 f->bor = 0;
1794 f->nbc = 0;
1795 f->cq = 0;
1796 f->cr = 0;
1797 f->ctcrty = 0;
1798 f->minsp = 0;
1799 f->phcto = 30;
1800 f->rel = 0;
1801 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1802 f->pollid[FAXIDLEN - 1] = 0;
1803}
1804#endif
1805
1806static void
475be4d8 1807isdn_tty_modem_reset_regs(modem_info *info, int force)
1da177e4
LT		 1808{
1809 atemu *m = &info->emu;
1810 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1811 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1812 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1813 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1814 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1815 }
1816#ifdef CONFIG_ISDN_AUDIO
1817 isdn_tty_modem_reset_vpar(m);
1818#endif
1819#ifdef CONFIG_ISDN_TTY_FAX
1820 isdn_tty_modem_reset_faxpar(info);
1821#endif
1822 m->mdmcmdl = 0;
1823}
1824
1825static void
475be4d8 1826modem_write_profile(atemu *m)
1da177e4
LT		 1827{
1828 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1829 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1830 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1831 if (dev->profd)
1832 send_sig(SIGIO, dev->profd, 1);
1833}
1834
b68e31d0 1835static const struct tty_operations modem_ops = {
475be4d8 1836 .open = isdn_tty_open,
1da177e4
LT		 1837 .close = isdn_tty_close,
1838 .write = isdn_tty_write,
1839 .flush_chars = isdn_tty_flush_chars,
1840 .write_room = isdn_tty_write_room,
1841 .chars_in_buffer = isdn_tty_chars_in_buffer,
1842 .flush_buffer = isdn_tty_flush_buffer,
1843 .ioctl = isdn_tty_ioctl,
1844 .throttle = isdn_tty_throttle,
1845 .unthrottle = isdn_tty_unthrottle,
1846 .set_termios = isdn_tty_set_termios,
1847 .hangup = isdn_tty_hangup,
1848 .tiocmget = isdn_tty_tiocmget,
1849 .tiocmset = isdn_tty_tiocmset,
1850};
1851
042b9e7c
JS		 1852static int isdn_tty_carrier_raised(struct tty_port *port)
1853{
1854 modem_info *info = container_of(port, modem_info, port);
1855 return info->msr & UART_MSR_DCD;
1856}
1857
1858static const struct tty_port_operations isdn_tty_port_ops = {
1859 .carrier_raised = isdn_tty_carrier_raised,
1860};
1861
1da177e4
LT		 1862int
1863isdn_tty_modem_init(void)
1864{
1865 isdn_modem_t *m;
1866 int i, retval;
1867 modem_info *info;
1868
1869 m = &dev->mdm;
1870 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1871 if (!m->tty_modem)
1872 return -ENOMEM;
1873 m->tty_modem->name = "ttyI";
1da177e4
LT		 1874 m->tty_modem->major = ISDN_TTY_MAJOR;
1875 m->tty_modem->minor_start = 0;
1876 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1877 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1878 m->tty_modem->init_termios = tty_std_termios;
1879 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
331b8319 1880 m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1da177e4
LT		 1881 m->tty_modem->driver_name = "isdn_tty";
1882 tty_set_operations(m->tty_modem, &modem_ops);
1883 retval = tty_register_driver(m->tty_modem);
1884 if (retval) {
1885 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1886 goto err;
1887 }
1888 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1889 info = &m->info[i];
1890#ifdef CONFIG_ISDN_TTY_FAX
1891 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1892 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1893 retval = -ENOMEM;
1894 goto err_unregister;
1895 }
1da177e4 1896#endif
48decc1c 1897 tty_port_init(&info->port);
042b9e7c 1898 info->port.ops = &isdn_tty_port_ops;
1da177e4 1899 spin_lock_init(&info->readlock);
1da177e4
LT		 1900 sprintf(info->last_cause, "0000");
1901 sprintf(info->last_num, "none");
1902 info->last_dir = 0;
1903 info->last_lhup = 1;
1904 info->last_l2 = -1;
1905 info->last_si = 0;
1906 isdn_tty_reset_profile(&info->emu);
1907 isdn_tty_modem_reset_regs(info, 1);
1908 info->magic = ISDN_ASYNC_MAGIC;
1909 info->line = i;
1da177e4 1910 info->x_char = 0;
1da177e4
LT		 1911 info->isdn_driver = -1;
1912 info->isdn_channel = -1;
1913 info->drv_index = -1;
1914 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1915 init_timer(&info->nc_timer);
1916 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1917 info->nc_timer.data = (unsigned long) info;
1918 skb_queue_head_init(&info->xmit_queue);
1919#ifdef CONFIG_ISDN_AUDIO
1920 skb_queue_head_init(&info->dtmf_queue);
1921#endif
82e46b31
JS		 1922 info->port.xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5,
1923 GFP_KERNEL);
1924 if (!info->port.xmit_buf) {
1da177e4
LT		 1925 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1926 retval = -ENOMEM;
1927 goto err_unregister;
1928 }
1929 /* Make room for T.70 header */
82e46b31 1930 info->port.xmit_buf += 4;
1da177e4
LT		 1931 }
1932 return 0;
1933err_unregister:
1934 for (i--; i >= 0; i--) {
1935 info = &m->info[i];
1936#ifdef CONFIG_ISDN_TTY_FAX
1937 kfree(info->fax);
1938#endif
82e46b31 1939 kfree(info->port.xmit_buf - 4);
1da177e4
LT		 1940 }
1941 tty_unregister_driver(m->tty_modem);
475be4d8 1942err:
1da177e4
LT		 1943 put_tty_driver(m->tty_modem);
1944 m->tty_modem = NULL;
1945 return retval;
1946}
1947
1948void
1949isdn_tty_exit(void)
1950{
1951 modem_info *info;
1952 int i;
1953
1954 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1955 info = &dev->mdm.info[i];
1956 isdn_tty_cleanup_xmit(info);
1957#ifdef CONFIG_ISDN_TTY_FAX
1958 kfree(info->fax);
1959#endif
82e46b31 1960 kfree(info->port.xmit_buf - 4);
1da177e4
LT		 1961 }
1962 tty_unregister_driver(dev->mdm.tty_modem);
1963 put_tty_driver(dev->mdm.tty_modem);
1964 dev->mdm.tty_modem = NULL;
1965}
1966
1967
1968/*
1969 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1970 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1971 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1972 */
1973
1974static int
1975isdn_tty_match_icall(char *cid, atemu *emu, int di)
1976{
1977#ifdef ISDN_DEBUG_MODEM_ICALL
1978 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1979 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1980 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1981#endif
1982 if (strlen(emu->lmsn)) {
1983 char *p = emu->lmsn;
1984 char *q;
1985 int tmp;
1986 int ret = 0;
1987
1988 while (1) {
1989 if ((q = strchr(p, ';')))
1990 *q = '\0';
1991 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
1992 ret = tmp;
1993#ifdef ISDN_DEBUG_MODEM_ICALL
1994 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
1995 p, isdn_map_eaz2msn(emu->msn, di), tmp);
1996#endif
1997 if (q) {
1998 *q = ';';
1999 p = q;
2000 p++;
2001 }
2002 if (!tmp)
2003 return 0;
2004 if (!q)
2005 break;
2006 }
2007 return ret;
2008 } else {
2009 int tmp;
2010 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
2011#ifdef ISDN_DEBUG_MODEM_ICALL
475be4d8
JP		 2012 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
2013 isdn_map_eaz2msn(emu->msn, di), tmp);
1da177e4
LT		 2014#endif
2015 return tmp;
2016 }
2017}
2018
2019/*
2020 * An incoming call-request has arrived.
2021 * Search the tty-devices for an appropriate device and bind
2022 * it to the ISDN-Channel.
2023 * Return:
2024 *
2025 * 0 = No matching device found.
2026 * 1 = A matching device found.
2027 * 3 = No match found, but eventually would match, if
2028 * CID is longer.
2029 */
2030int
2031isdn_tty_find_icall(int di, int ch, setup_parm *setup)
2032{
2033 char *eaz;
2034 int i;
2035 int wret;
2036 int idx;
2037 int si1;
2038 int si2;
2039 char *nr;
2040 ulong flags;
2041
2042 if (!setup->phone[0]) {
2043 nr = "0";
2044 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
2045 } else
2046 nr = setup->phone;
2047 si1 = (int) setup->si1;
2048 si2 = (int) setup->si2;
2049 if (!setup->eazmsn[0]) {
2050 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
2051 eaz = "0";
2052 } else
2053 eaz = setup->eazmsn;
2054#ifdef ISDN_DEBUG_MODEM_ICALL
2055 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
2056#endif
2057 wret = 0;
2058 spin_lock_irqsave(&dev->lock, flags);
2059 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2060 modem_info *info = &dev->mdm.info[i];
2061
1b05f030 2062 if (info->port.count == 0)
475be4d8 2063 continue;
1da177e4
LT		 2064 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
2065 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
2066 idx = isdn_dc2minor(di, ch);
2067#ifdef ISDN_DEBUG_MODEM_ICALL
2068 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
2069 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
48decc1c
JS		 2070 info->port.flags, info->isdn_driver,
2071 info->isdn_channel, dev->usage[idx]);
1da177e4
LT		 2072#endif
2073 if (
2074#ifndef FIX_FILE_TRANSFER
48decc1c 2075 (info->port.flags & ASYNC_NORMAL_ACTIVE) &&
1da177e4
LT		 2076#endif
2077 (info->isdn_driver == -1) &&
2078 (info->isdn_channel == -1) &&
2079 (USG_NONE(dev->usage[idx]))) {
2080 int matchret;
2081
2082 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
2083 wret = matchret;
2084 if (!matchret) { /* EAZ is matching */
2085 info->isdn_driver = di;
2086 info->isdn_channel = ch;
2087 info->drv_index = idx;
2088 dev->m_idx[idx] = info->line;
2089 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
475be4d8 2090 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
1da177e4
LT		 2091 strcpy(dev->num[idx], nr);
2092 strcpy(info->emu.cpn, eaz);
2093 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
2094 info->emu.mdmreg[REG_PLAN] = setup->plan;
2095 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2096 isdn_info_update();
2097 spin_unlock_irqrestore(&dev->lock, flags);
2098 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2099 info->line);
2100 info->msr |= UART_MSR_RI;
2101 isdn_tty_modem_result(RESULT_RING, info);
2102 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2103 return 1;
2104 }
2105 }
2106 }
2107 }
2108 spin_unlock_irqrestore(&dev->lock, flags);
2109 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
475be4d8
JP		 2110 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2)) ? "rejected" : "ignored");
2111 return (wret == 2) ? 3 : 0;
1da177e4
LT		 2112}
2113
48decc1c 2114#define TTY_IS_ACTIVE(info) (info->port.flags & ASYNC_NORMAL_ACTIVE)
1da177e4
LT		 2115
2116int
2117isdn_tty_stat_callback(int i, isdn_ctrl *c)
2118{
2119 int mi;
2120 modem_info *info;
2121 char *e;
2122
2123 if (i < 0)
2124 return 0;
2125 if ((mi = dev->m_idx[i]) >= 0) {
2126 info = &dev->mdm.info[mi];
2127 switch (c->command) {
475be4d8
JP		 2128 case ISDN_STAT_CINF:
2129 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2130 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2131 if (e == (char *)c->parm.num)
2132 info->emu.charge = 0;
2133
2134 break;
2135 case ISDN_STAT_BSENT:
1da177e4 2136#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2137 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
1da177e4 2138#endif
475be4d8
JP		 2139 if ((info->isdn_driver == c->driver) &&
2140 (info->isdn_channel == c->arg)) {
2141 info->msr |= UART_MSR_CTS;
2142 if (info->send_outstanding)
2143 if (!(--info->send_outstanding))
2144 info->lsr |= UART_LSR_TEMT;
2145 isdn_tty_tint(info);
1da177e4 2146 return 1;
475be4d8
JP		 2147 }
2148 break;
2149 case ISDN_STAT_CAUSE:
1da177e4 2150#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2151 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2152#endif
2153 /* Signal cause to tty-device */
2154 strncpy(info->last_cause, c->parm.num, 5);
2155 return 1;
2156 case ISDN_STAT_DISPLAY:
1da177e4 2157#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2158 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
1da177e4 2159#endif
475be4d8
JP		 2160 /* Signal display to tty-device */
2161 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2162 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2163 isdn_tty_at_cout("\r\n", info);
2164 isdn_tty_at_cout("DISPLAY: ", info);
2165 isdn_tty_at_cout(c->parm.display, info);
2166 isdn_tty_at_cout("\r\n", info);
2167 }
2168 return 1;
2169 case ISDN_STAT_DCONN:
2170#ifdef ISDN_TTY_STAT_DEBUG
2171 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2172#endif
2173 if (TTY_IS_ACTIVE(info)) {
2174 if (info->dialing == 1) {
2175 info->dialing = 2;
2176 return 1;
1da177e4 2177 }
475be4d8
JP		 2178 }
2179 break;
2180 case ISDN_STAT_DHUP:
1da177e4 2181#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2182 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
1da177e4 2183#endif
475be4d8
JP		 2184 if (TTY_IS_ACTIVE(info)) {
2185 if (info->dialing == 1)
2186 isdn_tty_modem_result(RESULT_BUSY, info);
2187 if (info->dialing > 1)
2188 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2189 info->dialing = 0;
1da177e4 2190#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2191 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
1da177e4 2192#endif
475be4d8
JP		 2193 isdn_tty_modem_hup(info, 0);
2194 return 1;
2195 }
2196 break;
2197 case ISDN_STAT_BCONN:
1da177e4 2198#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2199 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2200#endif
2201 /* Wake up any processes waiting
2202 * for incoming call of this device when
2203 * DCD follow the state of incoming carrier
2204 */
1b05f030 2205 if (info->port.blocked_open &&
475be4d8 2206 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
c6e92b63 2207 wake_up_interruptible(&info->port.open_wait);
475be4d8 2208 }
1da177e4 2209
475be4d8
JP		 2210 /* Schedule CONNECT-Message to any tty
2211 * waiting for it and
2212 * set DCD-bit of its modem-status.
2213 */
2214 if (TTY_IS_ACTIVE(info) ||
1b05f030
JS		 2215 (info->port.blocked_open &&
2216 (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
475be4d8
JP		 2217 info->msr |= UART_MSR_DCD;
2218 info->emu.charge = 0;
2219 if (info->dialing & 0xf)
2220 info->last_dir = 1;
2221 else
2222 info->last_dir = 0;
2223 info->dialing = 0;
2224 info->rcvsched = 1;
2225 if (USG_MODEM(dev->usage[i])) {
2226 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2227 strcpy(info->emu.connmsg, c->parm.num);
2228 isdn_tty_modem_result(RESULT_CONNECT, info);
2229 } else
2230 isdn_tty_modem_result(RESULT_CONNECT64000, info);
1da177e4 2231 }
475be4d8
JP		 2232 if (USG_VOICE(dev->usage[i]))
2233 isdn_tty_modem_result(RESULT_VCON, info);
2234 return 1;
2235 }
2236 break;
2237 case ISDN_STAT_BHUP:
1da177e4 2238#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2239 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
1da177e4 2240#endif
475be4d8 2241 if (TTY_IS_ACTIVE(info)) {
1da177e4 2242#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2243 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
1da177e4 2244#endif
475be4d8
JP		 2245 isdn_tty_modem_hup(info, 0);
2246 return 1;
2247 }
2248 break;
2249 case ISDN_STAT_NODCH:
1da177e4 2250#ifdef ISDN_TTY_STAT_DEBUG
475be4d8
JP		 2251 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2252#endif
2253 if (TTY_IS_ACTIVE(info)) {
2254 if (info->dialing) {
2255 info->dialing = 0;
2256 info->last_l2 = -1;
2257 info->last_si = 0;
2258 sprintf(info->last_cause, "0000");
2259 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
1da177e4 2260 }
475be4d8
JP		 2261 isdn_tty_modem_hup(info, 0);
2262 return 1;
2263 }
2264 break;
2265 case ISDN_STAT_UNLOAD:
1da177e4 2266#ifdef ISDN_TTY_STAT_DEBUG
475be4d8 2267 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
1da177e4 2268#endif
475be4d8
JP		 2269 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2270 info = &dev->mdm.info[i];
2271 if (info->isdn_driver == c->driver) {
2272 if (info->online)
2273 isdn_tty_modem_hup(info, 1);
1da177e4 2274 }
475be4d8
JP		 2275 }
2276 return 1;
1da177e4 2277#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 2278 case ISDN_STAT_FAXIND:
2279 if (TTY_IS_ACTIVE(info)) {
2280 isdn_tty_fax_command(info, c);
2281 }
2282 break;
1da177e4
LT		 2283#endif
2284#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 2285 case ISDN_STAT_AUDIO:
2286 if (TTY_IS_ACTIVE(info)) {
2287 switch (c->parm.num[0]) {
2288 case ISDN_AUDIO_DTMF:
2289 if (info->vonline) {
2290 isdn_audio_put_dle_code(info,
1da177e4 2291 c->parm.num[1]);
1da177e4 2292 }
475be4d8 2293 break;
1da177e4 2294 }
475be4d8
JP		 2295 }
2296 break;
1da177e4
LT		 2297#endif
2298 }
2299 }
2300 return 0;
2301}
2302
2303/*********************************************************************
2304 Modem-Emulator-Routines
475be4d8 2305*********************************************************************/
1da177e4 2306
475be4d8 2307#define cmdchar(c) ((c >= ' ') && (c <= 0x7f))
1da177e4
LT		 2308
2309/*
2310 * Put a message from the AT-emulator into receive-buffer of tty,
2311 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2312 */
2313void
475be4d8 2314isdn_tty_at_cout(char *msg, modem_info *info)
1da177e4
LT		 2315{
2316 struct tty_struct *tty;
2317 atemu *m = &info->emu;
2318 char *p;
2319 char c;
2320 u_long flags;
2321 struct sk_buff *skb = NULL;
2322 char *sp = NULL;
1f4d4a80 2323 int l;
1da177e4
LT		 2324
2325 if (!msg) {
2326 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2327 return;
2328 }
1f4d4a80
AB		 2329
2330 l = strlen(msg);
2331
1da177e4 2332 spin_lock_irqsave(&info->readlock, flags);
ba43294d 2333 tty = info->port.tty;
48decc1c 2334 if ((info->port.flags & ASYNC_CLOSING) || (!tty)) {
1da177e4
LT		 2335 spin_unlock_irqrestore(&info->readlock, flags);
2336 return;
2337 }
2338
33f0f88f
AC		 2339 /* use queue instead of direct, if online and */
2340 /* data is in queue or buffer is full */
61b9a26a 2341 if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
475be4d8 2342 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
33f0f88f 2343 skb = alloc_skb(l, GFP_ATOMIC);
1da177e4
LT		 2344 if (!skb) {
2345 spin_unlock_irqrestore(&info->readlock, flags);
2346 return;
2347 }
33f0f88f 2348 sp = skb_put(skb, l);
1da177e4
LT		 2349#ifdef CONFIG_ISDN_AUDIO
2350 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2351 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2352#endif
2353 }
2354
2355 for (p = msg; *p; p++) {
2356 switch (*p) {
475be4d8
JP		 2357 case '\r':
2358 c = m->mdmreg[REG_CR];
2359 break;
2360 case '\n':
2361 c = m->mdmreg[REG_LF];
2362 break;
2363 case '\b':
2364 c = m->mdmreg[REG_BS];
2365 break;
2366 default:
2367 c = *p;
1da177e4
LT		 2368 }
2369 if (skb) {
2370 *sp++ = c;
2371 } else {
475be4d8 2372 if (tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
1da177e4 2373 break;
1da177e4
LT		 2374 }
2375 }
2376 if (skb) {
2377 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2378 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2379 spin_unlock_irqrestore(&info->readlock, flags);
2380 /* Schedule dequeuing */
33f0f88f 2381 if (dev->modempoll && info->rcvsched)
1da177e4
LT		 2382 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2383
2384 } else {
2385 spin_unlock_irqrestore(&info->readlock, flags);
33f0f88f 2386 tty_flip_buffer_push(tty);
1da177e4
LT		 2387 }
2388}
2389
2390/*
2391 * Perform ATH Hangup
2392 */
2393static void
475be4d8 2394isdn_tty_on_hook(modem_info *info)
1da177e4
LT		 2395{
2396 if (info->isdn_channel >= 0) {
2397#ifdef ISDN_DEBUG_MODEM_HUP
2398 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2399#endif
2400 isdn_tty_modem_hup(info, 1);
2401 }
2402}
2403
2404static void
2405isdn_tty_off_hook(void)
2406{
2407 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2408}
2409
475be4d8
JP		 2410#define PLUSWAIT1 (HZ / 2) /* 0.5 sec. */
2411#define PLUSWAIT2 (HZ * 3 / 2) /* 1.5 sec */
1da177e4
LT		 2412
2413/*
2414 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2415 * isdn_tty_modem_escape() if sequence found.
2416 *
2417 * Parameters:
2418 * p pointer to databuffer
2419 * plus escape-character
2420 * count length of buffer
2421 * pluscount count of valid escape-characters so far
2422 * lastplus timestamp of last character
2423 */
2424static void
475be4d8 2425isdn_tty_check_esc(const u_char *p, u_char plus, int count, int *pluscount,
1da177e4
LT		 2426 u_long *lastplus)
2427{
2428 if (plus > 127)
2429 return;
2430 if (count > 3) {
2431 p += count - 3;
2432 count = 3;
2433 *pluscount = 0;
2434 }
2435 while (count > 0) {
2436 if (*(p++) == plus) {
2437 if ((*pluscount)++) {
2438 /* Time since last '+' > 0.5 sec. ? */
2439 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2440 *pluscount = 1;
2441 } else {
2442 /* Time since last non-'+' < 1.5 sec. ? */
2443 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2444 *pluscount = 0;
2445 }
2446 if ((*pluscount == 3) && (count == 1))
2447 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2448 if (*pluscount > 3)
2449 *pluscount = 1;
2450 } else
2451 *pluscount = 0;
2452 *lastplus = jiffies;
2453 count--;
2454 }
2455}
2456
2457/*
2458 * Return result of AT-emulator to tty-receive-buffer, depending on
2459 * modem-register 12, bit 0 and 1.
2460 * For CONNECT-messages also switch to online-mode.
2461 * For RING-message handle auto-ATA if register 0 != 0
2462 */
2463
2464static void
475be4d8 2465isdn_tty_modem_result(int code, modem_info *info)
1da177e4
LT		 2466{
2467 atemu *m = &info->emu;
2468 static char *msg[] =
475be4d8
JP		 2469 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2470 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2471 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2472 char s[ISDN_MSNLEN + 10];
1da177e4
LT		 2473
2474 switch (code) {
475be4d8
JP		 2475 case RESULT_RING:
2476 m->mdmreg[REG_RINGCNT]++;
2477 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2478 /* Automatically accept incoming call */
2479 isdn_tty_cmd_ATA(info);
2480 break;
2481 case RESULT_NO_CARRIER:
1da177e4 2482#ifdef ISDN_DEBUG_MODEM_HUP
475be4d8 2483 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
48decc1c 2484 (info->port.flags & ASYNC_CLOSING),
ba43294d 2485 (!info->port.tty));
475be4d8
JP		 2486#endif
2487 m->mdmreg[REG_RINGCNT] = 0;
2488 del_timer(&info->nc_timer);
2489 info->ncarrier = 0;
ba43294d 2490 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
475be4d8 2491 return;
6776a2f0 2492
1da177e4 2493#ifdef CONFIG_ISDN_AUDIO
475be4d8 2494 if (info->vonline & 1) {
1da177e4 2495#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2496 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2497 info->line);
1da177e4 2498#endif
475be4d8
JP		 2499 /* voice-recording, add DLE-ETX */
2500 isdn_tty_at_cout("\020\003", info);
2501 }
2502 if (info->vonline & 2) {
1da177e4 2503#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2504 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2505 info->line);
1da177e4 2506#endif
475be4d8
JP		 2507 /* voice-playing, add DLE-DC4 */
2508 isdn_tty_at_cout("\020\024", info);
2509 }
1da177e4 2510#endif
475be4d8
JP		 2511 break;
2512 case RESULT_CONNECT:
2513 case RESULT_CONNECT64000:
2514 sprintf(info->last_cause, "0000");
2515 if (!info->online)
2516 info->online = 2;
2517 break;
2518 case RESULT_VCON:
1da177e4 2519#ifdef ISDN_DEBUG_MODEM_VOICE
475be4d8
JP		 2520 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2521 info->line);
1da177e4 2522#endif
475be4d8
JP		 2523 sprintf(info->last_cause, "0000");
2524 if (!info->online)
2525 info->online = 1;
2526 break;
2527 } /* switch (code) */
1da177e4
LT		 2528
2529 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2530 /* Show results */
2531 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2532 /* Show numeric results only */
2533 sprintf(s, "\r\n%d\r\n", code);
2534 isdn_tty_at_cout(s, info);
2535 } else {
2536 if (code == RESULT_RING) {
475be4d8
JP		 2537 /* return if "show RUNG" and ringcounter>1 */
2538 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
1da177e4 2539 (m->mdmreg[REG_RINGCNT] > 1))
475be4d8
JP		 2540 return;
2541 /* print CID, _before_ _every_ ring */
2542 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2543 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2544 isdn_tty_at_cout(dev->num[info->drv_index], info);
2545 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2546 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2547 isdn_tty_at_cout(info->emu.cpn, info);
2548 }
2549 }
1da177e4
LT		 2550 }
2551 isdn_tty_at_cout("\r\n", info);
2552 isdn_tty_at_cout(msg[code], info);
2553 switch (code) {
475be4d8
JP		 2554 case RESULT_CONNECT:
2555 switch (m->mdmreg[REG_L2PROT]) {
2556 case ISDN_PROTO_L2_MODEM:
2557 isdn_tty_at_cout(" ", info);
2558 isdn_tty_at_cout(m->connmsg, info);
1da177e4 2559 break;
475be4d8
JP		 2560 }
2561 break;
2562 case RESULT_RING:
2563 /* Append CPN, if enabled */
2564 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2565 sprintf(s, "/%s", m->cpn);
2566 isdn_tty_at_cout(s, info);
2567 }
2568 /* Print CID only once, _after_ 1st RING */
2569 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2570 (m->mdmreg[REG_RINGCNT] == 1)) {
2571 isdn_tty_at_cout("\r\n", info);
2572 isdn_tty_at_cout("CALLER NUMBER: ", info);
2573 isdn_tty_at_cout(dev->num[info->drv_index], info);
2574 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2575 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2576 isdn_tty_at_cout(info->emu.cpn, info);
1da177e4 2577 }
475be4d8
JP		 2578 }
2579 break;
2580 case RESULT_NO_CARRIER:
2581 case RESULT_NO_DIALTONE:
2582 case RESULT_BUSY:
2583 case RESULT_NO_ANSWER:
2584 m->mdmreg[REG_RINGCNT] = 0;
2585 /* Append Cause-Message if enabled */
2586 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2587 sprintf(s, "/%s", info->last_cause);
2588 isdn_tty_at_cout(s, info);
2589 }
2590 break;
2591 case RESULT_CONNECT64000:
2592 /* Append Protocol to CONNECT message */
2593 switch (m->mdmreg[REG_L2PROT]) {
2594 case ISDN_PROTO_L2_X75I:
2595 case ISDN_PROTO_L2_X75UI:
2596 case ISDN_PROTO_L2_X75BUI:
2597 isdn_tty_at_cout("/X.75", info);
1da177e4 2598 break;
475be4d8
JP		 2599 case ISDN_PROTO_L2_HDLC:
2600 isdn_tty_at_cout("/HDLC", info);
1da177e4 2601 break;
475be4d8
JP		 2602 case ISDN_PROTO_L2_V11096:
2603 isdn_tty_at_cout("/V110/9600", info);
2604 break;
2605 case ISDN_PROTO_L2_V11019:
2606 isdn_tty_at_cout("/V110/19200", info);
2607 break;
2608 case ISDN_PROTO_L2_V11038:
2609 isdn_tty_at_cout("/V110/38400", info);
1da177e4 2610 break;
475be4d8
JP		 2611 }
2612 if (m->mdmreg[REG_T70] & BIT_T70) {
2613 isdn_tty_at_cout("/T.70", info);
2614 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2615 isdn_tty_at_cout("+", info);
2616 }
2617 break;
1da177e4
LT		 2618 }
2619 isdn_tty_at_cout("\r\n", info);
2620 }
2621 }
2622 if (code == RESULT_NO_CARRIER) {
ba43294d 2623 if ((info->port.flags & ASYNC_CLOSING) || (!info->port.tty))
1da177e4 2624 return;
6776a2f0 2625
48decc1c 2626 if (info->port.flags & ASYNC_CHECK_CD)
ba43294d 2627 tty_hangup(info->port.tty);
1da177e4
LT		 2628 }
2629}
2630
2631
2632/*
2633 * Display a modem-register-value.
2634 */
2635static void
475be4d8 2636isdn_tty_show_profile(int ridx, modem_info *info)
1da177e4
LT		 2637{
2638 char v[6];
2639
2640 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2641 isdn_tty_at_cout(v, info);
2642}
2643
2644/*
2645 * Get MSN-string from char-pointer, set pointer to end of number
2646 */
2647static void
2648isdn_tty_get_msnstr(char *n, char **p)
2649{
2650 int limit = ISDN_MSNLEN - 1;
2651
2652 while (((*p[0] >= '0' && *p[0] <= '9') ||
2653 /* Why a comma ??? */
2654 (*p[0] == ',') || (*p[0] == ':')) &&
475be4d8 2655 (limit--))
1da177e4
LT		 2656 *n++ = *p[0]++;
2657 *n = '\0';
2658}
2659
2660/*
2661 * Get phone-number from modem-commandbuffer
2662 */
2663static void
475be4d8 2664isdn_tty_getdial(char *p, char *q, int cnt)
1da177e4
LT		 2665{
2666 int first = 1;
2667 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
475be4d8 2668 buffer overflow */
1da177e4 2669
475be4d8 2670 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt > 0) {
1da177e4 2671 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
924ad158 2672 ((*p == 'R') && first) ||
1da177e4
LT		 2673 (*p == '*') || (*p == '#')) {
2674 *q++ = *p;
2675 limit--;
2676 }
475be4d8 2677 if (!limit)
1da177e4
LT		 2678 break;
2679 p++;
2680 first = 0;
2681 }
2682 *q = 0;
2683}
2684
2685#define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2686#define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2687
2688static void
475be4d8 2689isdn_tty_report(modem_info *info)
1da177e4
LT		 2690{
2691 atemu *m = &info->emu;
2692 char s[80];
2693
2694 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2695 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2696 isdn_tty_at_cout(s, info);
2697 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2698 isdn_tty_at_cout(s, info);
2699 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2700 switch (info->last_l2) {
475be4d8
JP		 2701 case ISDN_PROTO_L2_X75I:
2702 isdn_tty_at_cout("X.75i", info);
2703 break;
2704 case ISDN_PROTO_L2_X75UI:
2705 isdn_tty_at_cout("X.75ui", info);
2706 break;
2707 case ISDN_PROTO_L2_X75BUI:
2708 isdn_tty_at_cout("X.75bui", info);
2709 break;
2710 case ISDN_PROTO_L2_HDLC:
2711 isdn_tty_at_cout("HDLC", info);
2712 break;
2713 case ISDN_PROTO_L2_V11096:
2714 isdn_tty_at_cout("V.110 9600 Baud", info);
2715 break;
2716 case ISDN_PROTO_L2_V11019:
2717 isdn_tty_at_cout("V.110 19200 Baud", info);
2718 break;
2719 case ISDN_PROTO_L2_V11038:
2720 isdn_tty_at_cout("V.110 38400 Baud", info);
2721 break;
2722 case ISDN_PROTO_L2_TRANS:
2723 isdn_tty_at_cout("transparent", info);
2724 break;
2725 case ISDN_PROTO_L2_MODEM:
2726 isdn_tty_at_cout("modem", info);
2727 break;
2728 case ISDN_PROTO_L2_FAX:
2729 isdn_tty_at_cout("fax", info);
2730 break;
2731 default:
2732 isdn_tty_at_cout("unknown", info);
2733 break;
1da177e4
LT		 2734 }
2735 if (m->mdmreg[REG_T70] & BIT_T70) {
2736 isdn_tty_at_cout("/T.70", info);
2737 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2738 isdn_tty_at_cout("+", info);
2739 }
2740 isdn_tty_at_cout("\r\n", info);
2741 isdn_tty_at_cout(" Service: ", info);
2742 switch (info->last_si) {
475be4d8
JP		 2743 case 1:
2744 isdn_tty_at_cout("audio\r\n", info);
2745 break;
2746 case 5:
2747 isdn_tty_at_cout("btx\r\n", info);
2748 break;
2749 case 7:
2750 isdn_tty_at_cout("data\r\n", info);
2751 break;
2752 default:
2753 sprintf(s, "%d\r\n", info->last_si);
2754 isdn_tty_at_cout(s, info);
2755 break;
1da177e4
LT		 2756 }
2757 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2758 isdn_tty_at_cout(s, info);
2759 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2760 isdn_tty_at_cout(s, info);
2761}
2762
2763/*
2764 * Parse AT&.. commands.
2765 */
2766static int
475be4d8 2767isdn_tty_cmd_ATand(char **p, modem_info *info)
1da177e4
LT		 2768{
2769 atemu *m = &info->emu;
2770 int i;
2771 char rb[100];
2772
2773#define MAXRB (sizeof(rb) - 1)
2774
2775 switch (*p[0]) {
475be4d8
JP		 2776 case 'B':
2777 /* &B - Set Buffersize */
2778 p[0]++;
2779 i = isdn_getnum(p);
2780 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2781 PARSE_ERROR1;
1da177e4 2782#ifdef CONFIG_ISDN_AUDIO
475be4d8
JP		 2783 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2784 PARSE_ERROR1;
1da177e4 2785#endif
475be4d8
JP		 2786 m->mdmreg[REG_PSIZE] = i / 16;
2787 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2788 switch (m->mdmreg[REG_L2PROT]) {
2789 case ISDN_PROTO_L2_V11096:
2790 case ISDN_PROTO_L2_V11019:
2791 case ISDN_PROTO_L2_V11038:
2792 info->xmit_size /= 10;
2793 }
2794 break;
2795 case 'C':
2796 /* &C - DCD Status */
2797 p[0]++;
2798 switch (isdn_getnum(p)) {
2799 case 0:
2800 m->mdmreg[REG_DCD] &= ~BIT_DCD;
1da177e4 2801 break;
475be4d8
JP		 2802 case 1:
2803 m->mdmreg[REG_DCD] |= BIT_DCD;
1da177e4 2804 break;
475be4d8
JP		 2805 default:
2806 PARSE_ERROR1
2807 }
2808 break;
2809 case 'D':
2810 /* &D - Set DTR-Low-behavior */
2811 p[0]++;
2812 switch (isdn_getnum(p)) {
2813 case 0:
2814 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2815 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
1da177e4 2816 break;
475be4d8
JP		 2817 case 2:
2818 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2819 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2820 break;
2821 case 3:
2822 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2823 m->mdmreg[REG_DTRR] |= BIT_DTRR;
1da177e4 2824 break;
475be4d8
JP		 2825 default:
2826 PARSE_ERROR1
2827 }
2828 break;
2829 case 'E':
2830 /* &E -Set EAZ/MSN */
2831 p[0]++;
2832 isdn_tty_get_msnstr(m->msn, p);
2833 break;
2834 case 'F':
2835 /* &F -Set Factory-Defaults */
2836 p[0]++;
2837 if (info->msr & UART_MSR_DCD)
2838 PARSE_ERROR1;
2839 isdn_tty_reset_profile(m);
2840 isdn_tty_modem_reset_regs(info, 1);
2841 break;
1da177e4 2842#ifdef DUMMY_HAYES_AT
475be4d8
JP		 2843 case 'K':
2844 /* only for be compilant with common scripts */
2845 /* &K Flowcontrol - no function */
2846 p[0]++;
2847 isdn_getnum(p);
2848 break;
2849#endif
2850 case 'L':
2851 /* &L -Set Numbers to listen on */
2852 p[0]++;
2853 i = 0;
2854 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
2855 (i < ISDN_LMSNLEN - 1))
2856 m->lmsn[i++] = *p[0]++;
2857 m->lmsn[i] = '\0';
2858 break;
2859 case 'R':
2860 /* &R - Set V.110 bitrate adaption */
2861 p[0]++;
2862 i = isdn_getnum(p);
2863 switch (i) {
2864 case 0:
2865 /* Switch off V.110, back to X.75 */
2866 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2867 m->mdmreg[REG_SI2] = 0;
2868 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1da177e4 2869 break;
475be4d8
JP		 2870 case 9600:
2871 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2872 m->mdmreg[REG_SI2] = 197;
2873 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2874 break;
475be4d8
JP		 2875 case 19200:
2876 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2877 m->mdmreg[REG_SI2] = 199;
2878 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2879 break;
475be4d8
JP		 2880 case 38400:
2881 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2882 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2883 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
1da177e4 2884 break;
475be4d8
JP		 2885 default:
2886 PARSE_ERROR1;
2887 }
2888 /* Switch off T.70 */
2889 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2890 /* Set Service 7 */
2891 m->mdmreg[REG_SI1] |= 4;
2892 break;
2893 case 'S':
2894 /* &S - Set Windowsize */
2895 p[0]++;
2896 i = isdn_getnum(p);
2897 if ((i > 0) && (i < 9))
2898 m->mdmreg[REG_WSIZE] = i;
2899 else
2900 PARSE_ERROR1;
2901 break;
2902 case 'V':
2903 /* &V - Show registers */
2904 p[0]++;
2905 isdn_tty_at_cout("\r\n", info);
2906 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2907 sprintf(rb, "S%02d=%03d%s", i,
2908 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2909 isdn_tty_at_cout(rb, info);
2910 }
2911 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2912 strlen(m->msn) ? m->msn : "None");
2913 isdn_tty_at_cout(rb, info);
2914 if (strlen(m->lmsn)) {
2915 isdn_tty_at_cout("\r\nListen: ", info);
2916 isdn_tty_at_cout(m->lmsn, info);
2917 isdn_tty_at_cout("\r\n", info);
2918 }
2919 break;
2920 case 'W':
2921 /* &W - Write Profile */
2922 p[0]++;
2923 switch (*p[0]) {
2924 case '0':
1da177e4 2925 p[0]++;
475be4d8 2926 modem_write_profile(m);
1da177e4 2927 break;
475be4d8
JP		 2928 default:
2929 PARSE_ERROR1;
2930 }
2931 break;
2932 case 'X':
2933 /* &X - Switch to BTX-Mode and T.70 */
2934 p[0]++;
2935 switch (isdn_getnum(p)) {
2936 case 0:
2937 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2938 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2939 break;
2940 case 1:
2941 m->mdmreg[REG_T70] |= BIT_T70;
2942 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2943 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2944 info->xmit_size = 112;
2945 m->mdmreg[REG_SI1] = 4;
2946 m->mdmreg[REG_SI2] = 0;
2947 break;
2948 case 2:
2949 m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT);
2950 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2951 info->xmit_size = 112;
2952 m->mdmreg[REG_SI1] = 4;
2953 m->mdmreg[REG_SI2] = 0;
1da177e4
LT		 2954 break;
2955 default:
2956 PARSE_ERROR1;
475be4d8
JP		 2957 }
2958 break;
2959 default:
2960 PARSE_ERROR1;
1da177e4
LT		 2961 }
2962 return 0;
2963}
2964
2965static int
475be4d8 2966isdn_tty_check_ats(int mreg, int mval, modem_info *info, atemu *m)
1da177e4
LT		 2967{
2968 /* Some plausibility checks */
2969 switch (mreg) {
475be4d8
JP		 2970 case REG_L2PROT:
2971 if (mval > ISDN_PROTO_L2_MAX)
2972 return 1;
2973 break;
2974 case REG_PSIZE:
2975 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2976 return 1;
1da177e4 2977#ifdef CONFIG_ISDN_AUDIO
475be4d8 2978 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
1da177e4 2979 return 1;
475be4d8
JP		 2980#endif
2981 info->xmit_size = mval * 16;
2982 switch (m->mdmreg[REG_L2PROT]) {
2983 case ISDN_PROTO_L2_V11096:
2984 case ISDN_PROTO_L2_V11019:
2985 case ISDN_PROTO_L2_V11038:
2986 info->xmit_size /= 10;
2987 }
2988 break;
2989 case REG_SI1I:
2990 case REG_PLAN:
2991 case REG_SCREEN:
2992 /* readonly registers */
2993 return 1;
1da177e4
LT		 2994 }
2995 return 0;
2996}
2997
2998/*
2999 * Perform ATS command
3000 */
3001static int
475be4d8 3002isdn_tty_cmd_ATS(char **p, modem_info *info)
1da177e4
LT		 3003{
3004 atemu *m = &info->emu;
3005 int bitpos;
3006 int mreg;
3007 int mval;
3008 int bval;
3009
3010 mreg = isdn_getnum(p);
3011 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
3012 PARSE_ERROR1;
3013 switch (*p[0]) {
475be4d8
JP		 3014 case '=':
3015 p[0]++;
3016 mval = isdn_getnum(p);
3017 if (mval < 0 || mval > 255)
3018 PARSE_ERROR1;
3019 if (isdn_tty_check_ats(mreg, mval, info, m))
3020 PARSE_ERROR1;
3021 m->mdmreg[mreg] = mval;
3022 break;
3023 case '.':
3024 /* Set/Clear a single bit */
3025 p[0]++;
3026 bitpos = isdn_getnum(p);
3027 if ((bitpos < 0) || (bitpos > 7))
3028 PARSE_ERROR1;
3029 switch (*p[0]) {
1da177e4
LT		 3030 case '=':
3031 p[0]++;
475be4d8
JP		 3032 bval = isdn_getnum(p);
3033 if (bval < 0 || bval > 1)
1da177e4 3034 PARSE_ERROR1;
475be4d8
JP		 3035 if (bval)
3036 mval = m->mdmreg[mreg] | (1 << bitpos);
3037 else
3038 mval = m->mdmreg[mreg] & ~(1 << bitpos);
1da177e4
LT		 3039 if (isdn_tty_check_ats(mreg, mval, info, m))
3040 PARSE_ERROR1;
3041 m->mdmreg[mreg] = mval;
3042 break;
1da177e4
LT		 3043 case '?':
3044 p[0]++;
475be4d8
JP		 3045 isdn_tty_at_cout("\r\n", info);
3046 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
3047 info);
1da177e4
LT		 3048 break;
3049 default:
3050 PARSE_ERROR1;
475be4d8
JP		 3051 }
3052 break;
3053 case '?':
3054 p[0]++;
3055 isdn_tty_show_profile(mreg, info);
3056 break;
3057 default:
3058 PARSE_ERROR1;
3059 break;
1da177e4
LT		 3060 }
3061 return 0;
3062}
3063
3064/*
3065 * Perform ATA command
3066 */
3067static void
475be4d8 3068isdn_tty_cmd_ATA(modem_info *info)
1da177e4
LT		 3069{
3070 atemu *m = &info->emu;
3071 isdn_ctrl cmd;
3072 int l2;
3073
3074 if (info->msr & UART_MSR_RI) {
3075 /* Accept incoming call */
3076 info->last_dir = 0;
3077 strcpy(info->last_num, dev->num[info->drv_index]);
3078 m->mdmreg[REG_RINGCNT] = 0;
3079 info->msr &= ~UART_MSR_RI;
3080 l2 = m->mdmreg[REG_L2PROT];
3081#ifdef CONFIG_ISDN_AUDIO
3082 /* If more than one bit set in reg18, autoselect Layer2 */
3083 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
3084 if (m->mdmreg[REG_SI1I] == 1) {
3085 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
3086 l2 = ISDN_PROTO_L2_TRANS;
3087 } else
3088 l2 = ISDN_PROTO_L2_X75I;
3089 }
3090#endif
3091 cmd.driver = info->isdn_driver;
3092 cmd.command = ISDN_CMD_SETL2;
3093 cmd.arg = info->isdn_channel + (l2 << 8);
3094 info->last_l2 = l2;
3095 isdn_command(&cmd);
3096 cmd.driver = info->isdn_driver;
3097 cmd.command = ISDN_CMD_SETL3;
3098 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3099#ifdef CONFIG_ISDN_TTY_FAX
3100 if (l2 == ISDN_PROTO_L2_FAX) {
3101 cmd.parm.fax = info->fax;
3102 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3103 }
3104#endif
3105 isdn_command(&cmd);
3106 cmd.driver = info->isdn_driver;
3107 cmd.arg = info->isdn_channel;
3108 cmd.command = ISDN_CMD_ACCEPTD;
3109 info->dialing = 16;
3110 info->emu.carrierwait = 0;
3111 isdn_command(&cmd);
3112 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3113 } else
3114 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3115}
3116
3117#ifdef CONFIG_ISDN_AUDIO
3118/*
3119 * Parse AT+F.. commands
3120 */
3121static int
475be4d8 3122isdn_tty_cmd_PLUSF(char **p, modem_info *info)
1da177e4
LT		 3123{
3124 atemu *m = &info->emu;
3125 char rs[20];
3126
3127 if (!strncmp(p[0], "CLASS", 5)) {
3128 p[0] += 5;
3129 switch (*p[0]) {
475be4d8
JP		 3130 case '?':
3131 p[0]++;
3132 sprintf(rs, "\r\n%d",
3133 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
1da177e4 3134#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3135 if (TTY_IS_FCLASS2(info))
3136 sprintf(rs, "\r\n2");
3137 else if (TTY_IS_FCLASS1(info))
3138 sprintf(rs, "\r\n1");
1da177e4 3139#endif
475be4d8
JP		 3140 isdn_tty_at_cout(rs, info);
3141 break;
3142 case '=':
3143 p[0]++;
3144 switch (*p[0]) {
3145 case '0':
1da177e4 3146 p[0]++;
475be4d8
JP		 3147 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3148 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3149 m->mdmreg[REG_SI1] = 4;
3150 info->xmit_size =
3151 m->mdmreg[REG_PSIZE] * 16;
3152 break;
1da177e4 3153#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3154 case '1':
3155 p[0]++;
3156 if (!(dev->global_features &
3157 ISDN_FEATURE_L3_FCLASS1))
3158 PARSE_ERROR1;
3159 m->mdmreg[REG_SI1] = 1;
3160 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3161 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3162 info->xmit_size =
3163 m->mdmreg[REG_PSIZE] * 16;
3164 break;
3165 case '2':
3166 p[0]++;
3167 if (!(dev->global_features &
3168 ISDN_FEATURE_L3_FCLASS2))
3169 PARSE_ERROR1;
3170 m->mdmreg[REG_SI1] = 1;
3171 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3172 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3173 info->xmit_size =
3174 m->mdmreg[REG_PSIZE] * 16;
3175 break;
1da177e4 3176#endif
475be4d8
JP		 3177 case '8':
3178 p[0]++;
3179 /* L2 will change on dialout with si=1 */
3180 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3181 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3182 m->mdmreg[REG_SI1] = 5;
3183 info->xmit_size = VBUF;
3184 break;
3185 case '?':
3186 p[0]++;
3187 strcpy(rs, "\r\n0,");
1da177e4 3188#ifdef CONFIG_ISDN_TTY_FAX
475be4d8
JP		 3189 if (dev->global_features &
3190 ISDN_FEATURE_L3_FCLASS1)
3191 strcat(rs, "1,");
3192 if (dev->global_features &
3193 ISDN_FEATURE_L3_FCLASS2)
3194 strcat(rs, "2,");
3195#endif
3196 strcat(rs, "8");
3197 isdn_tty_at_cout(rs, info);
1da177e4
LT		 3198 break;
3199 default:
3200 PARSE_ERROR1;
475be4d8
JP		 3201 }
3202 break;
3203 default:
3204 PARSE_ERROR1;
1da177e4
LT		 3205 }
3206 return 0;
3207 }
3208#ifdef CONFIG_ISDN_TTY_FAX
3209 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3210#else
3211 PARSE_ERROR1;
3212#endif
3213}
3214
3215/*
3216 * Parse AT+V.. commands
3217 */
3218static int
475be4d8 3219isdn_tty_cmd_PLUSV(char **p, modem_info *info)
1da177e4
LT		 3220{
3221 atemu *m = &info->emu;
3222 isdn_ctrl cmd;
3223 static char *vcmd[] =
475be4d8 3224 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
1da177e4
LT		 3225 int i;
3226 int par1;
3227 int par2;
3228 char rs[20];
3229
3230 i = 0;
3231 while (vcmd[i]) {
3232 if (!strncmp(vcmd[i], p[0], 2)) {
3233 p[0] += 2;
3234 break;
3235 }
3236 i++;
3237 }
3238 switch (i) {
475be4d8
JP		 3239 case 0:
3240 /* AT+VNH - Auto hangup feature */
3241 switch (*p[0]) {
3242 case '?':
3243 p[0]++;
3244 isdn_tty_at_cout("\r\n1", info);
3245 break;
3246 case '=':
3247 p[0]++;
1da177e4 3248 switch (*p[0]) {
475be4d8
JP		 3249 case '1':
3250 p[0]++;
3251 break;
3252 case '?':
3253 p[0]++;
3254 isdn_tty_at_cout("\r\n1", info);
3255 break;
3256 default:
3257 PARSE_ERROR1;
1da177e4
LT		 3258 }
3259 break;
475be4d8
JP		 3260 default:
3261 PARSE_ERROR1;
3262 }
3263 break;
3264 case 1:
3265 /* AT+VIP - Reset all voice parameters */
3266 isdn_tty_modem_reset_vpar(m);
3267 break;
3268 case 2:
3269 /* AT+VLS - Select device, accept incoming call */
3270 switch (*p[0]) {
3271 case '?':
3272 p[0]++;
3273 sprintf(rs, "\r\n%d", m->vpar[0]);
3274 isdn_tty_at_cout(rs, info);
1da177e4 3275 break;
475be4d8
JP		 3276 case '=':
3277 p[0]++;
1da177e4 3278 switch (*p[0]) {
475be4d8
JP		 3279 case '0':
3280 p[0]++;
3281 m->vpar[0] = 0;
3282 break;
3283 case '2':
3284 p[0]++;
3285 m->vpar[0] = 2;
3286 break;
3287 case '?':
3288 p[0]++;
3289 isdn_tty_at_cout("\r\n0,2", info);
3290 break;
3291 default:
1da177e4
LT		 3292 PARSE_ERROR1;
3293 }
475be4d8
JP		 3294 break;
3295 default:
3296 PARSE_ERROR1;
3297 }
3298 break;
3299 case 3:
3300 /* AT+VRX - Start recording */
3301 if (!m->vpar[0])
3302 PARSE_ERROR1;
3303 if (info->online != 1) {
3304 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3305 return 1;
3306 }
3307 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3308 if (!info->dtmf_state) {
3309 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3310 PARSE_ERROR1;
3311 }
3312 info->silence_state = isdn_audio_silence_init(info->silence_state);
3313 if (!info->silence_state) {
3314 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3315 PARSE_ERROR1;
3316 }
3317 if (m->vpar[3] < 5) {
3318 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3319 if (!info->adpcmr) {
3320 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
1da177e4
LT		 3321 PARSE_ERROR1;
3322 }
475be4d8 3323 }
1da177e4 3324#ifdef ISDN_DEBUG_AT
475be4d8 3325 printk(KERN_DEBUG "AT: +VRX\n");
1da177e4 3326#endif
475be4d8
JP		 3327 info->vonline |= 1;
3328 isdn_tty_modem_result(RESULT_CONNECT, info);
3329 return 0;
3330 break;
3331 case 4:
3332 /* AT+VSD - Silence detection */
3333 switch (*p[0]) {
3334 case '?':
3335 p[0]++;
3336 sprintf(rs, "\r\n<%d>,<%d>",
3337 m->vpar[1],
3338 m->vpar[2]);
3339 isdn_tty_at_cout(rs, info);
1da177e4 3340 break;
475be4d8
JP		 3341 case '=':
3342 p[0]++;
3343 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3344 par1 = isdn_getnum(p);
3345 if ((par1 < 0) || (par1 > 31))
1da177e4 3346 PARSE_ERROR1;
475be4d8 3347 if (*p[0] != ',')
1da177e4 3348 PARSE_ERROR1;
475be4d8
JP		 3349 p[0]++;
3350 par2 = isdn_getnum(p);
3351 if ((par2 < 0) || (par2 > 255))
3352 PARSE_ERROR1;
3353 m->vpar[1] = par1;
3354 m->vpar[2] = par2;
3355 break;
3356 } else
3357 if (*p[0] == '?') {
1da177e4 3358 p[0]++;
475be4d8
JP		 3359 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3360 info);
1da177e4 3361 break;
475be4d8 3362 } else
1da177e4 3363 PARSE_ERROR1;
1da177e4 3364 break;
475be4d8
JP		 3365 default:
3366 PARSE_ERROR1;
3367 }
3368 break;
3369 case 5:
3370 /* AT+VSM - Select compression */
3371 switch (*p[0]) {
3372 case '?':
3373 p[0]++;
3374 sprintf(rs, "\r\n<%d>,<%d><8000>",
3375 m->vpar[3],
3376 m->vpar[1]);
3377 isdn_tty_at_cout(rs, info);
3378 break;
3379 case '=':
3380 p[0]++;
3381 switch (*p[0]) {
3382 case '2':
3383 case '3':
3384 case '4':
3385 case '5':
3386 case '6':
3387 par1 = isdn_getnum(p);
3388 if ((par1 < 2) || (par1 > 6))
3389 PARSE_ERROR1;
3390 m->vpar[3] = par1;
3391 break;
3392 case '?':
3393 p[0]++;
3394 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3395 info);
3396 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3397 info);
3398 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3399 info);
3400 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3401 info);
3402 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3403 info);
3404 break;
3405 default:
1da177e4 3406 PARSE_ERROR1;
1da177e4 3407 }
475be4d8
JP		 3408 break;
3409 default:
3410 PARSE_ERROR1;
3411 }
3412 break;
3413 case 6:
3414 /* AT+VTX - Start sending */
3415 if (!m->vpar[0])
3416 PARSE_ERROR1;
3417 if (info->online != 1) {
3418 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3419 return 1;
3420 }
3421 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3422 if (!info->dtmf_state) {
3423 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3424 PARSE_ERROR1;
3425 }
3426 if (m->vpar[3] < 5) {
3427 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3428 if (!info->adpcms) {
3429 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
1da177e4
LT		 3430 PARSE_ERROR1;
3431 }
475be4d8 3432 }
1da177e4 3433#ifdef ISDN_DEBUG_AT
475be4d8 3434 printk(KERN_DEBUG "AT: +VTX\n");
1da177e4 3435#endif
475be4d8
JP		 3436 m->lastDLE = 0;
3437 info->vonline |= 2;
3438 isdn_tty_modem_result(RESULT_CONNECT, info);
3439 return 0;
3440 break;
3441 case 7:
3442 /* AT+VDD - DTMF detection */
3443 switch (*p[0]) {
3444 case '?':
3445 p[0]++;
3446 sprintf(rs, "\r\n<%d>,<%d>",
3447 m->vpar[4],
3448 m->vpar[5]);
3449 isdn_tty_at_cout(rs, info);
1da177e4 3450 break;
475be4d8
JP		 3451 case '=':
3452 p[0]++;
3453 if ((*p[0] >= '0') && (*p[0] <= '9')) {
3454 if (info->online != 1)
3455 PARSE_ERROR1;
3456 par1 = isdn_getnum(p);
3457 if ((par1 < 0) || (par1 > 15))
3458 PARSE_ERROR1;
3459 if (*p[0] != ',')
1da177e4 3460 PARSE_ERROR1;
475be4d8
JP		 3461 p[0]++;
3462 par2 = isdn_getnum(p);
3463 if ((par2 < 0) || (par2 > 255))
3464 PARSE_ERROR1;
3465 m->vpar[4] = par1;
3466 m->vpar[5] = par2;
3467 cmd.driver = info->isdn_driver;
3468 cmd.command = ISDN_CMD_AUDIO;
3469 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3470 cmd.parm.num[0] = par1;
3471 cmd.parm.num[1] = par2;
3472 isdn_command(&cmd);
3473 break;
3474 } else
3475 if (*p[0] == '?') {
3476 p[0]++;
3477 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3478 info);
1da177e4 3479 break;
475be4d8 3480 } else
1da177e4 3481 PARSE_ERROR1;
1da177e4
LT		 3482 break;
3483 default:
3484 PARSE_ERROR1;
475be4d8
JP		 3485 }
3486 break;
3487 default:
3488 PARSE_ERROR1;
1da177e4
LT		 3489 }
3490 return 0;
3491}
3492#endif /* CONFIG_ISDN_AUDIO */
3493
3494/*
3495 * Parse and perform an AT-command-line.
3496 */
3497static void
475be4d8 3498isdn_tty_parse_at(modem_info *info)
1da177e4
LT		 3499{
3500 atemu *m = &info->emu;
3501 char *p;
f417f5e4 3502 char ds[ISDN_MSNLEN];
1da177e4
LT		 3503
3504#ifdef ISDN_DEBUG_AT
3505 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3506#endif
3507 for (p = &m->mdmcmd[2]; *p;) {
3508 switch (*p) {
475be4d8
JP		 3509 case ' ':
3510 p++;
3511 break;
3512 case 'A':
3513 /* A - Accept incoming call */
3514 p++;
3515 isdn_tty_cmd_ATA(info);
3516 return;
3517 break;
3518 case 'D':
3519 /* D - Dial */
3520 if (info->msr & UART_MSR_DCD)
3521 PARSE_ERROR;
3522 if (info->msr & UART_MSR_RI) {
3523 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3524 return;
3525 }
3526 isdn_tty_getdial(++p, ds, sizeof ds);
3527 p += strlen(p);
3528 if (!strlen(m->msn))
3529 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3530 else if (strlen(ds))
3531 isdn_tty_dial(ds, info, m);
3532 else
3533 PARSE_ERROR;
3534 return;
3535 case 'E':
3536 /* E - Turn Echo on/off */
3537 p++;
3538 switch (isdn_getnum(&p)) {
3539 case 0:
3540 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
1da177e4 3541 break;
475be4d8
JP		 3542 case 1:
3543 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3544 break;
3545 default:
3546 PARSE_ERROR;
3547 }
3548 break;
3549 case 'H':
3550 /* H - On/Off-hook */
3551 p++;
3552 switch (*p) {
3553 case '0':
1da177e4 3554 p++;
475be4d8 3555 isdn_tty_on_hook(info);
1da177e4 3556 break;
475be4d8 3557 case '1':
1da177e4 3558 p++;
475be4d8 3559 isdn_tty_off_hook();
1da177e4 3560 break;
475be4d8
JP		 3561 default:
3562 isdn_tty_on_hook(info);
3563 break;
3564 }
3565 break;
3566 case 'I':
3567 /* I - Information */
3568 p++;
3569 isdn_tty_at_cout("\r\nLinux ISDN", info);
3570 switch (*p) {
3571 case '0':
3572 case '1':
1da177e4 3573 p++;
1da177e4 3574 break;
475be4d8 3575 case '2':
1da177e4 3576 p++;
475be4d8 3577 isdn_tty_report(info);
1da177e4 3578 break;
475be4d8 3579 case '3':
1da177e4 3580 p++;
475be4d8
JP		 3581 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
3582 isdn_tty_at_cout(ds, info);
1da177e4 3583 break;
475be4d8
JP		 3584 default:;
3585 }
3586 break;
3587#ifdef DUMMY_HAYES_AT
3588 case 'L':
3589 case 'M':
3590 /* only for be compilant with common scripts */
3591 /* no function */
3592 p++;
3593 isdn_getnum(&p);
3594 break;
1da177e4 3595#endif
475be4d8
JP		 3596 case 'O':
3597 /* O - Go online */
3598 p++;
3599 if (info->msr & UART_MSR_DCD)
3600 /* if B-Channel is up */
3601 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT : RESULT_CONNECT64000, info);
3602 else
3603 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3604 return;
3605 case 'Q':
3606 /* Q - Turn Emulator messages on/off */
3607 p++;
3608 switch (isdn_getnum(&p)) {
3609 case 0:
3610 m->mdmreg[REG_RESP] |= BIT_RESP;
3611 break;
3612 case 1:
3613 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3614 break;
3615 default:
3616 PARSE_ERROR;
3617 }
3618 break;
3619 case 'S':
3620 /* S - Set/Get Register */
3621 p++;
3622 if (isdn_tty_cmd_ATS(&p, info))
1da177e4 3623 return;
475be4d8
JP		 3624 break;
3625 case 'V':
3626 /* V - Numeric or ASCII Emulator-messages */
3627 p++;
3628 switch (isdn_getnum(&p)) {
3629 case 0:
3630 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3631 break;
3632 case 1:
3633 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
1da177e4 3634 break;
475be4d8
JP		 3635 default:
3636 PARSE_ERROR;
3637 }
3638 break;
3639 case 'Z':
3640 /* Z - Load Registers from Profile */
3641 p++;
3642 if (info->msr & UART_MSR_DCD) {
3643 info->online = 0;
3644 isdn_tty_on_hook(info);
3645 }
3646 isdn_tty_modem_reset_regs(info, 1);
3647 break;
3648 case '+':
3649 p++;
3650 switch (*p) {
3651#ifdef CONFIG_ISDN_AUDIO
3652 case 'F':
1da177e4 3653 p++;
475be4d8 3654 if (isdn_tty_cmd_PLUSF(&p, info))
1da177e4
LT		 3655 return;
3656 break;
3657 case 'V':
475be4d8
JP		 3658 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3659 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3660 PARSE_ERROR;
1da177e4 3661 p++;
475be4d8
JP		 3662 if (isdn_tty_cmd_PLUSV(&p, info))
3663 return;
1da177e4 3664 break;
475be4d8
JP		 3665#endif /* CONFIG_ISDN_AUDIO */
3666 case 'S': /* SUSPEND */
1da177e4 3667 p++;
475be4d8
JP		 3668 isdn_tty_get_msnstr(ds, &p);
3669 isdn_tty_suspend(ds, info, m);
1da177e4 3670 break;
475be4d8 3671 case 'R': /* RESUME */
1da177e4 3672 p++;
475be4d8
JP		 3673 isdn_tty_get_msnstr(ds, &p);
3674 isdn_tty_resume(ds, info, m);
1da177e4 3675 break;
475be4d8 3676 case 'M': /* MESSAGE */
1da177e4 3677 p++;
475be4d8 3678 isdn_tty_send_msg(info, m, p);
1da177e4
LT		 3679 break;
3680 default:
3681 PARSE_ERROR;
475be4d8
JP		 3682 }
3683 break;
3684 case '&':
3685 p++;
3686 if (isdn_tty_cmd_ATand(&p, info))
3687 return;
3688 break;
3689 default:
3690 PARSE_ERROR;
1da177e4
LT		 3691 }
3692 }
3693#ifdef CONFIG_ISDN_AUDIO
3694 if (!info->vonline)
3695#endif
3696 isdn_tty_modem_result(RESULT_OK, info);
3697}
3698
3699/* Need own toupper() because standard-toupper is not available
3700 * within modules.
3701 */
475be4d8 3702#define my_toupper(c) (((c >= 'a') && (c <= 'z')) ? (c & 0xdf) : c)
1da177e4
LT		 3703
3704/*
3705 * Perform line-editing of AT-commands
3706 *
3707 * Parameters:
3708 * p inputbuffer
3709 * count length of buffer
3710 * channel index to line (minor-device)
3711 */
3712static int
475be4d8 3713isdn_tty_edit_at(const char *p, int count, modem_info *info)
1da177e4
LT		 3714{
3715 atemu *m = &info->emu;
3716 int total = 0;
3717 u_char c;
3718 char eb[2];
3719 int cnt;
3720
3721 for (cnt = count; cnt > 0; p++, cnt--) {
3722 c = *p;
3723 total++;
3724 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3725 /* Separator (CR or LF) */
3726 m->mdmcmd[m->mdmcmdl] = 0;
3727 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3728 eb[0] = c;
3729 eb[1] = 0;
3730 isdn_tty_at_cout(eb, info);
3731 }
3732 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3733 isdn_tty_parse_at(info);
3734 m->mdmcmdl = 0;
3735 continue;
3736 }
3737 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3738 /* Backspace-Function */
3739 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3740 if (m->mdmcmdl)
3741 m->mdmcmdl--;
3742 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3743 isdn_tty_at_cout("\b", info);
3744 }
3745 continue;
3746 }
3747 if (cmdchar(c)) {
3748 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3749 eb[0] = c;
3750 eb[1] = 0;
3751 isdn_tty_at_cout(eb, info);
3752 }
3753 if (m->mdmcmdl < 255) {
3754 c = my_toupper(c);
3755 switch (m->mdmcmdl) {
475be4d8
JP		 3756 case 1:
3757 if (c == 'T') {
3758 m->mdmcmd[m->mdmcmdl] = c;
3759 m->mdmcmd[++m->mdmcmdl] = 0;
1da177e4 3760 break;
475be4d8
JP		 3761 } else
3762 m->mdmcmdl = 0;
3763 /* Fall through, check for 'A' */
3764 case 0:
3765 if (c == 'A') {
1da177e4
LT		 3766 m->mdmcmd[m->mdmcmdl] = c;
3767 m->mdmcmd[++m->mdmcmdl] = 0;
475be4d8
JP		 3768 }
3769 break;
3770 default:
3771 m->mdmcmd[m->mdmcmdl] = c;
3772 m->mdmcmd[++m->mdmcmdl] = 0;
1da177e4
LT		 3773 }
3774 }
3775 }
3776 }
3777 return total;
3778}
3779
3780/*
3781 * Switch all modem-channels who are online and got a valid
3782 * escape-sequence 1.5 seconds ago, to command-mode.
3783 * This function is called every second via timer-interrupt from within
3784 * timer-dispatcher isdn_timer_function()
3785 */
3786void
3787isdn_tty_modem_escape(void)
3788{
3789 int ton = 0;
3790 int i;
3791 int midx;
3792
3793 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
37630f40
JS		 3794 if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) {
3795 modem_info *info = &dev->mdm.info[midx];
3796 if (info->online) {
3797 ton = 1;
3798 if ((info->emu.pluscount == 3) &&
3799 time_after(jiffies,
3800 info->emu.lastplus + PLUSWAIT2)) {
3801 info->emu.pluscount = 0;
3802 info->online = 0;
3803 isdn_tty_modem_result(RESULT_OK, info);
1da177e4
LT		 3804 }
3805 }
37630f40 3806 }
1da177e4
LT		 3807 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3808}
3809
3810/*
3811 * Put a RING-message to all modem-channels who have the RI-bit set.
3812 * This function is called every second via timer-interrupt from within
3813 * timer-dispatcher isdn_timer_function()
3814 */
3815void
3816isdn_tty_modem_ring(void)
3817{
3818 int ton = 0;
3819 int i;
3820
3821 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3822 modem_info *info = &dev->mdm.info[i];
3823 if (info->msr & UART_MSR_RI) {
3824 ton = 1;
3825 isdn_tty_modem_result(RESULT_RING, info);
3826 }
3827 }
3828 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3829}
3830
3831/*
3832 * For all online tty's, try sending data to
3833 * the lower levels.
3834 */
3835void
3836isdn_tty_modem_xmit(void)
3837{
3838 int ton = 1;
3839 int i;
3840
3841 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3842 modem_info *info = &dev->mdm.info[i];
3843 if (info->online) {
3844 ton = 1;
3845 isdn_tty_senddown(info);
3846 isdn_tty_tint(info);
3847 }
3848 }
3849 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3850}
3851
3852/*
3853 * Check all channels if we have a 'no carrier' timeout.
3854 * Timeout value is set by Register S7.
3855 */
3856void
3857isdn_tty_carrier_timeout(void)
3858{
3859 int ton = 0;
3860 int i;
3861
3862 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3863 modem_info *info = &dev->mdm.info[i];
37630f40
JS		 3864 if (!info->dialing)
3865 continue;
3866 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3867 info->dialing = 0;
3868 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3869 isdn_tty_modem_hup(info, 1);
3870 } else
3871 ton = 1;
1da177e4
LT		 3872 }
3873 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);
3874}
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