1 /* $Id: isdn_tty.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $
3 * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
5 * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
6 * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
12 #undef ISDN_TTY_STAT_DEBUG
14 #include <linux/isdn.h>
15 #include <linux/slab.h>
16 #include <linux/delay.h>
17 #include <linux/mutex.h>
18 #include "isdn_common.h"
20 #ifdef CONFIG_ISDN_AUDIO
21 #include "isdn_audio.h"
23 #define VBUFX (VBUF/16)
26 #define FIX_FILE_TRANSFER
27 #define DUMMY_HAYES_AT
31 static DEFINE_MUTEX(modem_info_mutex);
32 static int isdn_tty_edit_at(const char *, int, modem_info *);
33 static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *);
34 static void isdn_tty_modem_reset_regs(modem_info *, int);
35 static void isdn_tty_cmd_ATA(modem_info *);
36 static void isdn_tty_flush_buffer(struct tty_struct *);
37 static void isdn_tty_modem_result(int, modem_info *);
38 #ifdef CONFIG_ISDN_AUDIO
39 static int isdn_tty_countDLE(unsigned char *, int);
42 /* Leave this unchanged unless you know what you do! */
43 #define MODEM_PARANOIA_CHECK
44 #define MODEM_DO_RESTART
46 static int bit2si[8] =
47 {1, 5, 7, 7, 7, 7, 7, 7};
48 static int si2bit[8] =
49 {4, 1, 4, 4, 4, 4, 4, 4};
51 char *isdn_tty_revision = "$Revision: 1.1.2.3 $";
54 /* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
55 * to stuff incoming data directly into a tty's flip-buffer. This
56 * is done to speed up tty-receiving if the receive-queue is empty.
57 * This routine MUST be called with interrupts off.
60 * 0 = Failure, data has to be buffered and later processed by
61 * isdn_tty_readmodem().
64 isdn_tty_try_read(modem_info * info, struct sk_buff *skb)
68 struct tty_struct *tty;
72 if ((tty = info->tty)) {
73 if (info->mcr & UART_MCR_RTS) {
75 #ifdef CONFIG_ISDN_AUDIO
76 + ISDN_AUDIO_SKB_DLECOUNT(skb)
80 c = tty_buffer_request_room(tty, len);
82 #ifdef CONFIG_ISDN_AUDIO
83 if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
85 unsigned char *dp = skb->data;
88 tty_insert_flip_char(tty, DLE, 0);
89 tty_insert_flip_char(tty, *dp++, 0);
92 tty_insert_flip_char(tty, DLE, 0);
97 tty_insert_flip_string(tty, skb->data, len - 1);
98 last = skb->data[len - 1];
99 #ifdef CONFIG_ISDN_AUDIO
102 if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
103 tty_insert_flip_char(tty, last, 0xFF);
105 tty_insert_flip_char(tty, last, TTY_NORMAL);
106 tty_flip_buffer_push(tty);
116 /* isdn_tty_readmodem() is called periodically from within timer-interrupt.
117 * It tries getting received data from the receive queue an stuff it into
118 * the tty's flip-buffer.
121 isdn_tty_readmodem(void)
127 struct tty_struct *tty;
130 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
131 if ((midx = dev->m_idx[i]) >= 0) {
132 info = &dev->mdm.info[midx];
135 #ifdef CONFIG_ISDN_AUDIO
136 isdn_audio_eval_dtmf(info);
137 if ((info->vonline & 1) && (info->emu.vpar[1]))
138 isdn_audio_eval_silence(info);
140 if ((tty = info->tty)) {
141 if (info->mcr & UART_MCR_RTS) {
142 /* CISCO AsyncPPP Hack */
143 if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
144 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
146 r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
148 tty_flip_buffer_push(tty);
162 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
166 isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
170 #ifdef CONFIG_ISDN_AUDIO
175 if ((midx = dev->m_idx[i]) < 0) {
176 /* if midx is invalid, packet is not for tty */
179 info = &dev->mdm.info[midx];
180 #ifdef CONFIG_ISDN_AUDIO
183 if ((info->vonline) && (!info->emu.vpar[4]))
184 isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
185 if ((info->vonline & 1) && (info->emu.vpar[1]))
186 isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
188 if ((info->online < 2)
189 #ifdef CONFIG_ISDN_AUDIO
190 && (!(info->vonline & 1))
193 /* If Modem not listening, drop data */
197 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
198 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
199 /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
200 if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
203 if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
206 /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
207 if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
210 #ifdef CONFIG_ISDN_AUDIO
211 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
212 ISDN_AUDIO_SKB_LOCK(skb) = 0;
213 if (info->vonline & 1) {
214 /* voice conversion/compression */
215 switch (info->emu.vpar[3]) {
220 * Since compressed data takes less
221 * space, we can overwrite the buffer.
223 skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
232 isdn_audio_ulaw2alaw(skb->data, skb->len);
237 isdn_audio_alaw2ulaw(skb->data, skb->len);
240 ISDN_AUDIO_SKB_DLECOUNT(skb) =
241 isdn_tty_countDLE(skb->data, skb->len);
243 #ifdef CONFIG_ISDN_TTY_FAX
245 if (info->faxonline & 2) {
246 isdn_tty_fax_bitorder(info, skb);
247 ISDN_AUDIO_SKB_DLECOUNT(skb) =
248 isdn_tty_countDLE(skb->data, skb->len);
253 /* Try to deliver directly via tty-buf if queue is empty */
254 spin_lock_irqsave(&info->readlock, flags);
255 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
256 if (isdn_tty_try_read(info, skb)) {
257 spin_unlock_irqrestore(&info->readlock, flags);
260 /* Direct deliver failed or queue wasn't empty.
261 * Queue up for later dequeueing via timer-irq.
263 __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
264 dev->drv[di]->rcvcount[channel] +=
266 #ifdef CONFIG_ISDN_AUDIO
267 + ISDN_AUDIO_SKB_DLECOUNT(skb)
270 spin_unlock_irqrestore(&info->readlock, flags);
271 /* Schedule dequeuing */
272 if ((dev->modempoll) && (info->rcvsched))
273 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
278 isdn_tty_cleanup_xmit(modem_info * info)
280 skb_queue_purge(&info->xmit_queue);
281 #ifdef CONFIG_ISDN_AUDIO
282 skb_queue_purge(&info->dtmf_queue);
287 isdn_tty_tint(modem_info * info)
289 struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
295 if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
296 info->isdn_channel, 1, skb)) == len) {
297 struct tty_struct *tty = info->tty;
298 info->send_outstanding++;
299 info->msr &= ~UART_MSR_CTS;
300 info->lsr &= ~UART_LSR_TEMT;
305 /* Error: no channel, already shutdown, or wrong parameter */
309 skb_queue_head(&info->xmit_queue, skb);
312 #ifdef CONFIG_ISDN_AUDIO
314 isdn_tty_countDLE(unsigned char *buf, int len)
324 /* This routine is called from within isdn_tty_write() to perform
325 * DLE-decoding when sending audio-data.
328 isdn_tty_handleDLEdown(modem_info * info, atemu * m, int len)
330 unsigned char *p = &info->xmit_buf[info->xmit_count];
340 memmove(p, p + 1, len - 1);
351 #ifdef ISDN_DEBUG_MODEM_VOICE
353 "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
356 isdn_tty_at_cout("\020\003", info);
357 if (!info->vonline) {
358 #ifdef ISDN_DEBUG_MODEM_VOICE
360 "DLEdown: send VCON on ttyI%d\n",
363 isdn_tty_at_cout("\r\nVCON\r\n", info);
370 memmove(p, p + 1, len - 1);
384 printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
390 /* This routine is called from within isdn_tty_write() when receiving
391 * audio-data. It interrupts receiving, if an character other than
395 isdn_tty_end_vrx(const char *buf, int c)
401 if ((ch != 0x11) && (ch != 0x13))
408 static int voice_cf[7] =
409 {0, 0, 4, 3, 2, 0, 0};
411 #endif /* CONFIG_ISDN_AUDIO */
413 /* isdn_tty_senddown() is called either directly from within isdn_tty_write()
414 * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
415 * outgoing data from the tty's xmit-buffer, handles voice-decompression or
416 * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
419 isdn_tty_senddown(modem_info * info)
423 #ifdef CONFIG_ISDN_AUDIO
428 #ifdef CONFIG_ISDN_AUDIO
429 if (info->vonline & 4) {
431 if (!info->vonline) {
432 #ifdef ISDN_DEBUG_MODEM_VOICE
434 "senddown: send VCON on ttyI%d\n",
437 isdn_tty_at_cout("\r\nVCON\r\n", info);
441 if (!(buflen = info->xmit_count))
443 if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
444 info->msr &= ~UART_MSR_CTS;
445 info->lsr &= ~UART_LSR_TEMT;
446 /* info->xmit_count is modified here and in isdn_tty_write().
447 * So we return here if isdn_tty_write() is in the
450 atomic_inc(&info->xmit_lock);
451 if (!(atomic_dec_and_test(&info->xmit_lock)))
453 if (info->isdn_driver < 0) {
454 info->xmit_count = 0;
457 skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
458 #ifdef CONFIG_ISDN_AUDIO
459 if (info->vonline & 2)
460 audio_len = buflen * voice_cf[info->emu.vpar[3]];
463 skb = dev_alloc_skb(skb_res + buflen + audio_len);
465 skb = dev_alloc_skb(skb_res + buflen);
469 "isdn_tty: Out of memory in ttyI%d senddown\n",
473 skb_reserve(skb, skb_res);
474 memcpy(skb_put(skb, buflen), info->xmit_buf, buflen);
475 info->xmit_count = 0;
476 #ifdef CONFIG_ISDN_AUDIO
477 if (info->vonline & 2) {
478 /* For now, ifmt is fixed to 1 (alaw), since this
479 * is used with ISDN everywhere in the world, except
480 * US, Canada and Japan.
481 * Later, when US-ISDN protocols are implemented,
482 * this setting will depend on the D-channel protocol.
486 /* voice conversion/decompression */
487 switch (info->emu.vpar[3]) {
491 /* adpcm, compatible to ZyXel 1496 modem
492 * with ROM revision 6.01
494 audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
497 skb_put(skb, audio_len),
499 skb_pull(skb, buflen);
500 skb_trim(skb, audio_len);
505 isdn_audio_alaw2ulaw(skb->data,
511 isdn_audio_ulaw2alaw(skb->data,
516 #endif /* CONFIG_ISDN_AUDIO */
517 if (info->emu.mdmreg[REG_T70] & BIT_T70) {
518 /* Add T.70 simplified header */
519 if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT)
520 memcpy(skb_push(skb, 2), "\1\0", 2);
522 memcpy(skb_push(skb, 4), "\1\0\1\0", 4);
524 skb_queue_tail(&info->xmit_queue, skb);
527 /************************************************************
531 * mostly "stolen" from original Linux-serial.c and friends.
533 ************************************************************/
535 /* The next routine is called once from within timer-interrupt
536 * triggered within isdn_tty_modem_ncarrier(). It calls
537 * isdn_tty_modem_result() to stuff a "NO CARRIER" Message
538 * into the tty's buffer.
541 isdn_tty_modem_do_ncarrier(unsigned long data)
543 modem_info *info = (modem_info *) data;
544 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
547 /* Next routine is called, whenever the DTR-signal is raised.
548 * It checks the ncarrier-flag, and triggers the above routine
549 * when necessary. The ncarrier-flag is set, whenever DTR goes
553 isdn_tty_modem_ncarrier(modem_info * info)
555 if (info->ncarrier) {
556 info->nc_timer.expires = jiffies + HZ;
557 add_timer(&info->nc_timer);
562 * return the usage calculated by si and layer 2 protocol
565 isdn_calc_usage(int si, int l2)
567 int usg = ISDN_USAGE_MODEM;
569 #ifdef CONFIG_ISDN_AUDIO
572 case ISDN_PROTO_L2_MODEM:
573 usg = ISDN_USAGE_MODEM;
575 #ifdef CONFIG_ISDN_TTY_FAX
576 case ISDN_PROTO_L2_FAX:
577 usg = ISDN_USAGE_FAX;
580 case ISDN_PROTO_L2_TRANS:
582 usg = ISDN_USAGE_VOICE;
590 /* isdn_tty_dial() performs dialing of a tty an the necessary
591 * setup of the lower levels before that.
594 isdn_tty_dial(char *n, modem_info * info, atemu * m)
596 int usg = ISDN_USAGE_MODEM;
598 int l2 = m->mdmreg[REG_L2PROT];
604 for (j = 7; j >= 0; j--)
605 if (m->mdmreg[REG_SI1] & (1 << j)) {
609 usg = isdn_calc_usage(si, l2);
610 #ifdef CONFIG_ISDN_AUDIO
612 (l2 != ISDN_PROTO_L2_MODEM)
613 #ifdef CONFIG_ISDN_TTY_FAX
614 && (l2 != ISDN_PROTO_L2_FAX)
617 l2 = ISDN_PROTO_L2_TRANS;
618 usg = ISDN_USAGE_VOICE;
621 m->mdmreg[REG_SI1I] = si2bit[si];
622 spin_lock_irqsave(&dev->lock, flags);
623 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
625 spin_unlock_irqrestore(&dev->lock, flags);
626 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
628 info->isdn_driver = dev->drvmap[i];
629 info->isdn_channel = dev->chanmap[i];
631 dev->m_idx[i] = info->line;
632 dev->usage[i] |= ISDN_USAGE_OUTGOING;
634 strcpy(info->last_num, n);
636 spin_unlock_irqrestore(&dev->lock, flags);
637 cmd.driver = info->isdn_driver;
638 cmd.arg = info->isdn_channel;
639 cmd.command = ISDN_CMD_CLREAZ;
641 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
642 cmd.driver = info->isdn_driver;
643 cmd.command = ISDN_CMD_SETEAZ;
645 cmd.driver = info->isdn_driver;
646 cmd.command = ISDN_CMD_SETL2;
648 cmd.arg = info->isdn_channel + (l2 << 8);
650 cmd.driver = info->isdn_driver;
651 cmd.command = ISDN_CMD_SETL3;
652 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
653 #ifdef CONFIG_ISDN_TTY_FAX
654 if (l2 == ISDN_PROTO_L2_FAX) {
655 cmd.parm.fax = info->fax;
656 info->fax->direction = ISDN_TTY_FAX_CONN_OUT;
660 cmd.driver = info->isdn_driver;
661 cmd.arg = info->isdn_channel;
662 sprintf(cmd.parm.setup.phone, "%s", n);
663 sprintf(cmd.parm.setup.eazmsn, "%s",
664 isdn_map_eaz2msn(m->msn, info->isdn_driver));
665 cmd.parm.setup.si1 = si;
666 cmd.parm.setup.si2 = m->mdmreg[REG_SI2];
667 cmd.command = ISDN_CMD_DIAL;
669 info->emu.carrierwait = 0;
670 strcpy(dev->num[i], n);
673 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
677 /* isdn_tty_hangup() disassociates a tty from the real
678 * ISDN-line (hangup). The usage-status is cleared
679 * and some cleanup is done also.
682 isdn_tty_modem_hup(modem_info * info, int local)
690 di = info->isdn_driver;
691 ch = info->isdn_channel;
692 if (di < 0 || ch < 0)
695 info->isdn_driver = -1;
696 info->isdn_channel = -1;
698 #ifdef ISDN_DEBUG_MODEM_HUP
699 printk(KERN_DEBUG "Mhup ttyI%d\n", info->line);
702 isdn_tty_flush_buffer(info->tty);
704 info->last_lhup = local;
706 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
708 #ifdef CONFIG_ISDN_AUDIO
710 #ifdef CONFIG_ISDN_TTY_FAX
712 info->fax->phase = ISDN_FAX_PHASE_IDLE;
714 info->emu.vpar[4] = 0;
715 info->emu.vpar[5] = 8;
716 kfree(info->dtmf_state);
717 info->dtmf_state = NULL;
718 kfree(info->silence_state);
719 info->silence_state = NULL;
725 if ((info->msr & UART_MSR_RI) &&
726 (info->emu.mdmreg[REG_RUNG] & BIT_RUNG))
727 isdn_tty_modem_result(RESULT_RUNG, info);
728 info->msr &= ~(UART_MSR_DCD | UART_MSR_RI);
729 info->lsr |= UART_LSR_TEMT;
733 cmd.command = ISDN_CMD_HANGUP;
738 isdn_all_eaz(di, ch);
739 info->emu.mdmreg[REG_RINGCNT] = 0;
740 isdn_free_channel(di, ch, 0);
742 if (info->drv_index >= 0) {
743 dev->m_idx[info->drv_index] = -1;
744 info->drv_index = -1;
749 * Begin of a CAPI like interface, currently used only for
750 * supplementary service (CAPI 2.0 part III)
752 #include <linux/isdn/capicmd.h>
755 isdn_tty_capi_facility(capi_msg *cm) {
756 return(-1); /* dummy */
759 /* isdn_tty_suspend() tries to suspend the current tty connection
762 isdn_tty_suspend(char *id, modem_info * info, atemu * m)
771 #ifdef ISDN_DEBUG_MODEM_SERVICES
772 printk(KERN_DEBUG "Msusp ttyI%d\n", info->line);
775 if ((info->isdn_driver >= 0)) {
776 cmd.parm.cmsg.Length = l+18;
777 cmd.parm.cmsg.Command = CAPI_FACILITY;
778 cmd.parm.cmsg.Subcommand = CAPI_REQ;
779 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
780 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
781 cmd.parm.cmsg.para[1] = 0;
782 cmd.parm.cmsg.para[2] = l + 3;
783 cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */
784 cmd.parm.cmsg.para[4] = 0;
785 cmd.parm.cmsg.para[5] = l;
786 strncpy(&cmd.parm.cmsg.para[6], id, l);
787 cmd.command = CAPI_PUT_MESSAGE;
788 cmd.driver = info->isdn_driver;
789 cmd.arg = info->isdn_channel;
794 /* isdn_tty_resume() tries to resume a suspended call
795 * setup of the lower levels before that. unfortunatly here is no
796 * checking for compatibility of used protocols implemented by Q931
797 * It does the same things like isdn_tty_dial, the last command
798 * is different, may be we can merge it.
802 isdn_tty_resume(char *id, modem_info * info, atemu * m)
804 int usg = ISDN_USAGE_MODEM;
806 int l2 = m->mdmreg[REG_L2PROT];
814 for (j = 7; j >= 0; j--)
815 if (m->mdmreg[REG_SI1] & (1 << j)) {
819 usg = isdn_calc_usage(si, l2);
820 #ifdef CONFIG_ISDN_AUDIO
822 (l2 != ISDN_PROTO_L2_MODEM)
823 #ifdef CONFIG_ISDN_TTY_FAX
824 && (l2 != ISDN_PROTO_L2_FAX)
827 l2 = ISDN_PROTO_L2_TRANS;
828 usg = ISDN_USAGE_VOICE;
831 m->mdmreg[REG_SI1I] = si2bit[si];
832 spin_lock_irqsave(&dev->lock, flags);
833 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
835 spin_unlock_irqrestore(&dev->lock, flags);
836 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
838 info->isdn_driver = dev->drvmap[i];
839 info->isdn_channel = dev->chanmap[i];
841 dev->m_idx[i] = info->line;
842 dev->usage[i] |= ISDN_USAGE_OUTGOING;
844 // strcpy(info->last_num, n);
846 spin_unlock_irqrestore(&dev->lock, flags);
847 cmd.driver = info->isdn_driver;
848 cmd.arg = info->isdn_channel;
849 cmd.command = ISDN_CMD_CLREAZ;
851 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
852 cmd.driver = info->isdn_driver;
853 cmd.command = ISDN_CMD_SETEAZ;
855 cmd.driver = info->isdn_driver;
856 cmd.command = ISDN_CMD_SETL2;
858 cmd.arg = info->isdn_channel + (l2 << 8);
860 cmd.driver = info->isdn_driver;
861 cmd.command = ISDN_CMD_SETL3;
862 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
864 cmd.driver = info->isdn_driver;
865 cmd.arg = info->isdn_channel;
866 cmd.parm.cmsg.Length = l+18;
867 cmd.parm.cmsg.Command = CAPI_FACILITY;
868 cmd.parm.cmsg.Subcommand = CAPI_REQ;
869 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
870 cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */
871 cmd.parm.cmsg.para[1] = 0;
872 cmd.parm.cmsg.para[2] = l+3;
873 cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */
874 cmd.parm.cmsg.para[4] = 0;
875 cmd.parm.cmsg.para[5] = l;
876 strncpy(&cmd.parm.cmsg.para[6], id, l);
877 cmd.command =CAPI_PUT_MESSAGE;
879 // strcpy(dev->num[i], n);
882 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
886 /* isdn_tty_send_msg() sends a message to a HL driver
887 * This is used for hybrid modem cards to send AT commands to it
891 isdn_tty_send_msg(modem_info * info, atemu * m, char *msg)
893 int usg = ISDN_USAGE_MODEM;
895 int l2 = m->mdmreg[REG_L2PROT];
904 isdn_tty_modem_result(RESULT_ERROR, info);
907 for (j = 7; j >= 0; j--)
908 if (m->mdmreg[REG_SI1] & (1 << j)) {
912 usg = isdn_calc_usage(si, l2);
913 #ifdef CONFIG_ISDN_AUDIO
915 (l2 != ISDN_PROTO_L2_MODEM)
916 #ifdef CONFIG_ISDN_TTY_FAX
917 && (l2 != ISDN_PROTO_L2_FAX)
920 l2 = ISDN_PROTO_L2_TRANS;
921 usg = ISDN_USAGE_VOICE;
924 m->mdmreg[REG_SI1I] = si2bit[si];
925 spin_lock_irqsave(&dev->lock, flags);
926 i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn);
928 spin_unlock_irqrestore(&dev->lock, flags);
929 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
931 info->isdn_driver = dev->drvmap[i];
932 info->isdn_channel = dev->chanmap[i];
934 dev->m_idx[i] = info->line;
935 dev->usage[i] |= ISDN_USAGE_OUTGOING;
938 spin_unlock_irqrestore(&dev->lock, flags);
939 cmd.driver = info->isdn_driver;
940 cmd.arg = info->isdn_channel;
941 cmd.command = ISDN_CMD_CLREAZ;
943 strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver));
944 cmd.driver = info->isdn_driver;
945 cmd.command = ISDN_CMD_SETEAZ;
947 cmd.driver = info->isdn_driver;
948 cmd.command = ISDN_CMD_SETL2;
950 cmd.arg = info->isdn_channel + (l2 << 8);
952 cmd.driver = info->isdn_driver;
953 cmd.command = ISDN_CMD_SETL3;
954 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
956 cmd.driver = info->isdn_driver;
957 cmd.arg = info->isdn_channel;
958 cmd.parm.cmsg.Length = l+14;
959 cmd.parm.cmsg.Command = CAPI_MANUFACTURER;
960 cmd.parm.cmsg.Subcommand = CAPI_REQ;
961 cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1;
962 cmd.parm.cmsg.para[0] = l+1;
963 strncpy(&cmd.parm.cmsg.para[1], msg, l);
964 cmd.parm.cmsg.para[l+1] = 0xd;
965 cmd.command =CAPI_PUT_MESSAGE;
966 /* info->dialing = 1;
967 strcpy(dev->num[i], n);
975 isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine)
977 #ifdef MODEM_PARANOIA_CHECK
979 printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n",
983 if (info->magic != ISDN_ASYNC_MAGIC) {
984 printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n",
993 * This routine is called to set the UART divisor registers to match
994 * the specified baud rate for a serial port.
997 isdn_tty_change_speed(modem_info * info)
1005 if (!info->tty || !info->tty->termios)
1007 cflag = info->tty->termios->c_cflag;
1009 quot = i = cflag & CBAUD;
1013 info->tty->termios->c_cflag &= ~CBAUDEX;
1018 info->mcr |= UART_MCR_DTR;
1019 isdn_tty_modem_ncarrier(info);
1021 info->mcr &= ~UART_MCR_DTR;
1022 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1023 #ifdef ISDN_DEBUG_MODEM_HUP
1024 printk(KERN_DEBUG "Mhup in changespeed\n");
1028 isdn_tty_modem_reset_regs(info, 0);
1029 isdn_tty_modem_hup(info, 1);
1033 /* byte size and parity */
1034 cval = cflag & (CSIZE | CSTOPB);
1037 cval |= UART_LCR_PARITY;
1038 if (!(cflag & PARODD))
1039 cval |= UART_LCR_EPAR;
1042 /* CTS flow control flag and modem status interrupts */
1043 if (cflag & CRTSCTS) {
1044 info->flags |= ISDN_ASYNC_CTS_FLOW;
1046 info->flags &= ~ISDN_ASYNC_CTS_FLOW;
1048 info->flags &= ~ISDN_ASYNC_CHECK_CD;
1050 info->flags |= ISDN_ASYNC_CHECK_CD;
1055 isdn_tty_startup(modem_info * info)
1057 if (info->flags & ISDN_ASYNC_INITIALIZED)
1059 isdn_lock_drivers();
1060 #ifdef ISDN_DEBUG_MODEM_OPEN
1061 printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line);
1064 * Now, initialize the UART
1066 info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
1068 clear_bit(TTY_IO_ERROR, &info->tty->flags);
1070 * and set the speed of the serial port
1072 isdn_tty_change_speed(info);
1074 info->flags |= ISDN_ASYNC_INITIALIZED;
1075 info->msr |= (UART_MSR_DSR | UART_MSR_CTS);
1076 info->send_outstanding = 0;
1081 * This routine will shutdown a serial port; interrupts are disabled, and
1082 * DTR is dropped if the hangup on close termio flag is on.
1085 isdn_tty_shutdown(modem_info * info)
1087 if (!(info->flags & ISDN_ASYNC_INITIALIZED))
1089 #ifdef ISDN_DEBUG_MODEM_OPEN
1090 printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line);
1092 isdn_unlock_drivers();
1093 info->msr &= ~UART_MSR_RI;
1094 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
1095 info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
1096 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1097 isdn_tty_modem_reset_regs(info, 0);
1098 #ifdef ISDN_DEBUG_MODEM_HUP
1099 printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n");
1101 isdn_tty_modem_hup(info, 1);
1105 set_bit(TTY_IO_ERROR, &info->tty->flags);
1107 info->flags &= ~ISDN_ASYNC_INITIALIZED;
1110 /* isdn_tty_write() is the main send-routine. It is called from the upper
1111 * levels within the kernel to perform sending data. Depending on the
1112 * online-flag it either directs output to the at-command-interpreter or
1113 * to the lower level. Additional tasks done here:
1114 * - If online, check for escape-sequence (+++)
1115 * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes.
1116 * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed.
1117 * - If dialing, abort dial.
1120 isdn_tty_write(struct tty_struct *tty, const u_char * buf, int count)
1124 modem_info *info = (modem_info *) tty->driver_data;
1125 atemu *m = &info->emu;
1127 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write"))
1129 /* See isdn_tty_senddown() */
1130 atomic_inc(&info->xmit_lock);
1133 if (c > info->xmit_size - info->xmit_count)
1134 c = info->xmit_size - info->xmit_count;
1135 if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize)
1136 c = dev->drv[info->isdn_driver]->maxbufsize;
1139 if ((info->online > 1)
1140 #ifdef CONFIG_ISDN_AUDIO
1141 || (info->vonline & 3)
1144 #ifdef CONFIG_ISDN_AUDIO
1147 isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c,
1150 memcpy(&(info->xmit_buf[info->xmit_count]), buf, c);
1151 #ifdef CONFIG_ISDN_AUDIO
1152 if (info->vonline) {
1153 int cc = isdn_tty_handleDLEdown(info, m, c);
1154 if (info->vonline & 2) {
1156 /* If DLE decoding results in zero-transmit, but
1157 * c originally was non-zero, do a wakeup.
1160 info->msr |= UART_MSR_CTS;
1161 info->lsr |= UART_LSR_TEMT;
1163 info->xmit_count += cc;
1165 if ((info->vonline & 3) == 1) {
1166 /* Do NOT handle Ctrl-Q or Ctrl-S
1167 * when in full-duplex audio mode.
1169 if (isdn_tty_end_vrx(buf, c)) {
1170 info->vonline &= ~1;
1171 #ifdef ISDN_DEBUG_MODEM_VOICE
1173 "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n",
1176 isdn_tty_at_cout("\020\003\r\nVCON\r\n", info);
1180 if (TTY_IS_FCLASS1(info)) {
1181 int cc = isdn_tty_handleDLEdown(info, m, c);
1183 if (info->vonline & 4) { /* ETX seen */
1186 c.command = ISDN_CMD_FAXCMD;
1187 c.driver = info->isdn_driver;
1188 c.arg = info->isdn_channel;
1189 c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL;
1190 c.parm.aux.subcmd = ETX;
1194 #ifdef ISDN_DEBUG_MODEM_VOICE
1195 printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c);
1197 info->xmit_count += cc;
1200 info->xmit_count += c;
1202 info->msr |= UART_MSR_CTS;
1203 info->lsr |= UART_LSR_TEMT;
1204 if (info->dialing) {
1206 #ifdef ISDN_DEBUG_MODEM_HUP
1207 printk(KERN_DEBUG "Mhup in isdn_tty_write\n");
1209 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
1210 isdn_tty_modem_hup(info, 1);
1212 c = isdn_tty_edit_at(buf, c, info);
1218 atomic_dec(&info->xmit_lock);
1219 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
1220 if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
1221 isdn_tty_senddown(info);
1222 isdn_tty_tint(info);
1224 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1230 isdn_tty_write_room(struct tty_struct *tty)
1232 modem_info *info = (modem_info *) tty->driver_data;
1235 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room"))
1238 return info->xmit_size;
1239 ret = info->xmit_size - info->xmit_count;
1240 return (ret < 0) ? 0 : ret;
1244 isdn_tty_chars_in_buffer(struct tty_struct *tty)
1246 modem_info *info = (modem_info *) tty->driver_data;
1248 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer"))
1252 return (info->xmit_count);
1256 isdn_tty_flush_buffer(struct tty_struct *tty)
1263 info = (modem_info *) tty->driver_data;
1264 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) {
1267 isdn_tty_cleanup_xmit(info);
1268 info->xmit_count = 0;
1273 isdn_tty_flush_chars(struct tty_struct *tty)
1275 modem_info *info = (modem_info *) tty->driver_data;
1277 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
1279 if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
1280 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
1284 * ------------------------------------------------------------
1285 * isdn_tty_throttle()
1287 * This routine is called by the upper-layer tty layer to signal that
1288 * incoming characters should be throttled.
1289 * ------------------------------------------------------------
1292 isdn_tty_throttle(struct tty_struct *tty)
1294 modem_info *info = (modem_info *) tty->driver_data;
1296 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle"))
1299 info->x_char = STOP_CHAR(tty);
1300 info->mcr &= ~UART_MCR_RTS;
1304 isdn_tty_unthrottle(struct tty_struct *tty)
1306 modem_info *info = (modem_info *) tty->driver_data;
1308 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle"))
1314 info->x_char = START_CHAR(tty);
1316 info->mcr |= UART_MCR_RTS;
1320 * ------------------------------------------------------------
1321 * isdn_tty_ioctl() and friends
1322 * ------------------------------------------------------------
1326 * isdn_tty_get_lsr_info - get line status register info
1328 * Purpose: Let user call ioctl() to get info when the UART physically
1329 * is emptied. On bus types like RS485, the transmitter must
1330 * release the bus after transmitting. This must be done when
1331 * the transmit shift register is empty, not be done when the
1332 * transmit holding register is empty. This functionality
1333 * allows RS485 driver to be written in user space.
1336 isdn_tty_get_lsr_info(modem_info * info, uint __user * value)
1342 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1343 return put_user(result, value);
1348 isdn_tty_tiocmget(struct tty_struct *tty, struct file *file)
1350 modem_info *info = (modem_info *) tty->driver_data;
1351 u_char control, status;
1353 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1355 if (tty->flags & (1 << TTY_IO_ERROR))
1358 mutex_lock(&modem_info_mutex);
1359 #ifdef ISDN_DEBUG_MODEM_IOCTL
1360 printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
1363 control = info->mcr;
1365 mutex_unlock(&modem_info_mutex);
1366 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
1367 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
1368 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
1369 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
1370 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
1371 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1375 isdn_tty_tiocmset(struct tty_struct *tty, struct file *file,
1376 unsigned int set, unsigned int clear)
1378 modem_info *info = (modem_info *) tty->driver_data;
1380 if (isdn_tty_paranoia_check(info, tty->name, __func__))
1382 if (tty->flags & (1 << TTY_IO_ERROR))
1385 #ifdef ISDN_DEBUG_MODEM_IOCTL
1386 printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
1389 mutex_lock(&modem_info_mutex);
1390 if (set & TIOCM_RTS)
1391 info->mcr |= UART_MCR_RTS;
1392 if (set & TIOCM_DTR) {
1393 info->mcr |= UART_MCR_DTR;
1394 isdn_tty_modem_ncarrier(info);
1397 if (clear & TIOCM_RTS)
1398 info->mcr &= ~UART_MCR_RTS;
1399 if (clear & TIOCM_DTR) {
1400 info->mcr &= ~UART_MCR_DTR;
1401 if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) {
1402 isdn_tty_modem_reset_regs(info, 0);
1403 #ifdef ISDN_DEBUG_MODEM_HUP
1404 printk(KERN_DEBUG "Mhup in TIOCMSET\n");
1408 isdn_tty_modem_hup(info, 1);
1411 mutex_unlock(&modem_info_mutex);
1416 isdn_tty_ioctl(struct tty_struct *tty, struct file *file,
1417 uint cmd, ulong arg)
1419 modem_info *info = (modem_info *) tty->driver_data;
1422 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
1424 if (tty->flags & (1 << TTY_IO_ERROR))
1427 case TCSBRK: /* SVID version: non-zero arg --> no break */
1428 #ifdef ISDN_DEBUG_MODEM_IOCTL
1429 printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
1431 retval = tty_check_change(tty);
1434 tty_wait_until_sent(tty, 0);
1436 case TCSBRKP: /* support for POSIX tcsendbreak() */
1437 #ifdef ISDN_DEBUG_MODEM_IOCTL
1438 printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
1440 retval = tty_check_change(tty);
1443 tty_wait_until_sent(tty, 0);
1445 case TIOCSERGETLSR: /* Get line status register */
1446 #ifdef ISDN_DEBUG_MODEM_IOCTL
1447 printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
1449 return isdn_tty_get_lsr_info(info, (uint __user *) arg);
1451 #ifdef ISDN_DEBUG_MODEM_IOCTL
1452 printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line);
1454 return -ENOIOCTLCMD;
1460 isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1462 modem_info *info = (modem_info *) tty->driver_data;
1465 isdn_tty_change_speed(info);
1467 if (tty->termios->c_cflag == old_termios->c_cflag &&
1468 tty->termios->c_ispeed == old_termios->c_ispeed &&
1469 tty->termios->c_ospeed == old_termios->c_ospeed)
1471 isdn_tty_change_speed(info);
1472 if ((old_termios->c_cflag & CRTSCTS) &&
1473 !(tty->termios->c_cflag & CRTSCTS))
1474 tty->hw_stopped = 0;
1479 * ------------------------------------------------------------
1480 * isdn_tty_open() and friends
1481 * ------------------------------------------------------------
1484 isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info * info)
1486 DECLARE_WAITQUEUE(wait, NULL);
1491 * If the device is in the middle of being closed, then block
1492 * until it's done, and then try again.
1494 if (tty_hung_up_p(filp) ||
1495 (info->flags & ISDN_ASYNC_CLOSING)) {
1496 if (info->flags & ISDN_ASYNC_CLOSING)
1497 interruptible_sleep_on(&info->close_wait);
1498 #ifdef MODEM_DO_RESTART
1499 if (info->flags & ISDN_ASYNC_HUP_NOTIFY)
1502 return -ERESTARTSYS;
1508 * If non-blocking mode is set, then make the check up front
1511 if ((filp->f_flags & O_NONBLOCK) ||
1512 (tty->flags & (1 << TTY_IO_ERROR))) {
1513 if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
1515 info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
1518 if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) {
1519 if (info->normal_termios.c_cflag & CLOCAL)
1522 if (tty->termios->c_cflag & CLOCAL)
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.
1533 add_wait_queue(&info->open_wait, &wait);
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);
1538 if (!(tty_hung_up_p(filp)))
1540 info->blocked_open++;
1542 set_current_state(TASK_INTERRUPTIBLE);
1543 if (tty_hung_up_p(filp) ||
1544 !(info->flags & ISDN_ASYNC_INITIALIZED)) {
1545 #ifdef MODEM_DO_RESTART
1546 if (info->flags & ISDN_ASYNC_HUP_NOTIFY)
1549 retval = -ERESTARTSYS;
1555 if (!(info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
1556 !(info->flags & ISDN_ASYNC_CLOSING) &&
1557 (do_clocal || (info->msr & UART_MSR_DCD))) {
1560 if (signal_pending(current)) {
1561 retval = -ERESTARTSYS;
1564 #ifdef ISDN_DEBUG_MODEM_OPEN
1565 printk(KERN_DEBUG "isdn_tty_block_til_ready blocking: ttyi%d, count = %d\n",
1566 info->line, info->count);
1570 current->state = TASK_RUNNING;
1571 remove_wait_queue(&info->open_wait, &wait);
1572 if (!tty_hung_up_p(filp))
1574 info->blocked_open--;
1575 #ifdef ISDN_DEBUG_MODEM_OPEN
1576 printk(KERN_DEBUG "isdn_tty_block_til_ready after blocking: ttyi%d, count = %d\n",
1577 info->line, info->count);
1581 info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
1586 * This routine is called whenever a serial port is opened. It
1587 * enables interrupts for a serial port, linking in its async structure into
1588 * the IRQ chain. It also performs the serial-specific
1589 * initialization for the tty structure.
1592 isdn_tty_open(struct tty_struct *tty, struct file *filp)
1598 if (line < 0 || line >= ISDN_MAX_CHANNELS)
1600 info = &dev->mdm.info[line];
1601 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))
1603 if (!try_module_get(info->owner)) {
1604 printk(KERN_WARNING "%s: cannot reserve module\n", __func__);
1607 #ifdef ISDN_DEBUG_MODEM_OPEN
1608 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
1612 tty->driver_data = info;
1615 * Start up serial port
1617 retval = isdn_tty_startup(info);
1619 #ifdef ISDN_DEBUG_MODEM_OPEN
1620 printk(KERN_DEBUG "isdn_tty_open return after startup\n");
1622 module_put(info->owner);
1625 retval = isdn_tty_block_til_ready(tty, filp, info);
1627 #ifdef ISDN_DEBUG_MODEM_OPEN
1628 printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
1630 module_put(info->owner);
1633 #ifdef ISDN_DEBUG_MODEM_OPEN
1634 printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line);
1637 #ifdef ISDN_DEBUG_MODEM_OPEN
1638 printk(KERN_DEBUG "isdn_tty_open normal exit\n");
1644 isdn_tty_close(struct tty_struct *tty, struct file *filp)
1646 modem_info *info = (modem_info *) tty->driver_data;
1649 if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close"))
1651 if (tty_hung_up_p(filp)) {
1652 #ifdef ISDN_DEBUG_MODEM_OPEN
1653 printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n");
1657 if ((tty->count == 1) && (info->count != 1)) {
1659 * Uh, oh. tty->count is 1, which means that the tty
1660 * structure will be freed. Info->count should always
1661 * be one in these conditions. If it's greater than
1662 * one, we've got real problems, since it means the
1663 * serial port won't be shutdown.
1665 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
1666 "info->count is %d\n", info->count);
1669 if (--info->count < 0) {
1670 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
1671 info->line, info->count);
1675 #ifdef ISDN_DEBUG_MODEM_OPEN
1676 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
1678 module_put(info->owner);
1681 info->flags |= ISDN_ASYNC_CLOSING;
1683 * Save the termios structure, since this port may have
1684 * separate termios for callout and dialin.
1686 if (info->flags & ISDN_ASYNC_NORMAL_ACTIVE)
1687 info->normal_termios = *tty->termios;
1688 if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
1689 info->callout_termios = *tty->termios;
1693 * At this point we stop accepting input. To do this, we
1694 * disable the receive line status interrupts, and tell the
1695 * interrupt driver to stop checking the data ready bit in the
1696 * line status register.
1698 if (info->flags & ISDN_ASYNC_INITIALIZED) {
1699 tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */
1701 * Before we drop DTR, make sure the UART transmitter
1702 * has completely drained; this is especially
1703 * important if there is a transmit FIFO!
1705 timeout = jiffies + HZ;
1706 while (!(info->lsr & UART_LSR_TEMT)) {
1707 schedule_timeout_interruptible(20);
1708 if (time_after(jiffies,timeout))
1713 isdn_tty_shutdown(info);
1714 isdn_tty_flush_buffer(tty);
1715 tty_ldisc_flush(tty);
1719 module_put(info->owner);
1720 if (info->blocked_open) {
1721 msleep_interruptible(500);
1722 wake_up_interruptible(&info->open_wait);
1724 info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CLOSING);
1725 wake_up_interruptible(&info->close_wait);
1726 #ifdef ISDN_DEBUG_MODEM_OPEN
1727 printk(KERN_DEBUG "isdn_tty_close normal exit\n");
1732 * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
1735 isdn_tty_hangup(struct tty_struct *tty)
1737 modem_info *info = (modem_info *) tty->driver_data;
1739 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
1741 isdn_tty_shutdown(info);
1743 info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE);
1745 wake_up_interruptible(&info->open_wait);
1748 /* This routine initializes all emulator-data.
1751 isdn_tty_reset_profile(atemu * m)
1764 m->profile[11] = 70;
1765 m->profile[12] = 0x45;
1767 m->profile[14] = ISDN_PROTO_L2_X75I;
1768 m->profile[15] = ISDN_PROTO_L3_TRANS;
1769 m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16;
1770 m->profile[17] = ISDN_MODEM_WINSIZE;
1779 #ifdef CONFIG_ISDN_AUDIO
1781 isdn_tty_modem_reset_vpar(atemu * m)
1783 m->vpar[0] = 2; /* Voice-device (2 = phone line) */
1784 m->vpar[1] = 0; /* Silence detection level (0 = none ) */
1785 m->vpar[2] = 70; /* Silence interval (7 sec. ) */
1786 m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */
1787 m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */
1788 m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */
1792 #ifdef CONFIG_ISDN_TTY_FAX
1794 isdn_tty_modem_reset_faxpar(modem_info * info)
1796 T30_s *f = info->fax;
1799 f->phase = ISDN_FAX_PHASE_IDLE;
1801 f->resolution = 1; /* fine */
1802 f->rate = 5; /* 14400 bit/s */
1809 memset(&f->id[0], 32, FAXIDLEN - 1);
1810 f->id[FAXIDLEN - 1] = 0;
1821 memset(&f->pollid[0], 32, FAXIDLEN - 1);
1822 f->pollid[FAXIDLEN - 1] = 0;
1827 isdn_tty_modem_reset_regs(modem_info * info, int force)
1829 atemu *m = &info->emu;
1830 if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) {
1831 memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG);
1832 memcpy(m->msn, m->pmsn, ISDN_MSNLEN);
1833 memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN);
1834 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
1836 #ifdef CONFIG_ISDN_AUDIO
1837 isdn_tty_modem_reset_vpar(m);
1839 #ifdef CONFIG_ISDN_TTY_FAX
1840 isdn_tty_modem_reset_faxpar(info);
1846 modem_write_profile(atemu * m)
1848 memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG);
1849 memcpy(m->pmsn, m->msn, ISDN_MSNLEN);
1850 memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN);
1852 send_sig(SIGIO, dev->profd, 1);
1855 static const struct tty_operations modem_ops = {
1856 .open = isdn_tty_open,
1857 .close = isdn_tty_close,
1858 .write = isdn_tty_write,
1859 .flush_chars = isdn_tty_flush_chars,
1860 .write_room = isdn_tty_write_room,
1861 .chars_in_buffer = isdn_tty_chars_in_buffer,
1862 .flush_buffer = isdn_tty_flush_buffer,
1863 .ioctl = isdn_tty_ioctl,
1864 .throttle = isdn_tty_throttle,
1865 .unthrottle = isdn_tty_unthrottle,
1866 .set_termios = isdn_tty_set_termios,
1867 .hangup = isdn_tty_hangup,
1868 .tiocmget = isdn_tty_tiocmget,
1869 .tiocmset = isdn_tty_tiocmset,
1873 isdn_tty_modem_init(void)
1880 m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);
1883 m->tty_modem->name = "ttyI";
1884 m->tty_modem->major = ISDN_TTY_MAJOR;
1885 m->tty_modem->minor_start = 0;
1886 m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;
1887 m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
1888 m->tty_modem->init_termios = tty_std_termios;
1889 m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
1890 m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1891 m->tty_modem->driver_name = "isdn_tty";
1892 tty_set_operations(m->tty_modem, &modem_ops);
1893 retval = tty_register_driver(m->tty_modem);
1895 printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n");
1898 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1900 #ifdef CONFIG_ISDN_TTY_FAX
1901 if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) {
1902 printk(KERN_ERR "Could not allocate fax t30-buffer\n");
1904 goto err_unregister;
1908 info->owner = THIS_MODULE;
1910 spin_lock_init(&info->readlock);
1911 sprintf(info->last_cause, "0000");
1912 sprintf(info->last_num, "none");
1914 info->last_lhup = 1;
1917 isdn_tty_reset_profile(&info->emu);
1918 isdn_tty_modem_reset_regs(info, 1);
1919 info->magic = ISDN_ASYNC_MAGIC;
1924 info->blocked_open = 0;
1925 init_waitqueue_head(&info->open_wait);
1926 init_waitqueue_head(&info->close_wait);
1927 info->isdn_driver = -1;
1928 info->isdn_channel = -1;
1929 info->drv_index = -1;
1930 info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
1931 init_timer(&info->nc_timer);
1932 info->nc_timer.function = isdn_tty_modem_do_ncarrier;
1933 info->nc_timer.data = (unsigned long) info;
1934 skb_queue_head_init(&info->xmit_queue);
1935 #ifdef CONFIG_ISDN_AUDIO
1936 skb_queue_head_init(&info->dtmf_queue);
1938 if (!(info->xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5, GFP_KERNEL))) {
1939 printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
1941 goto err_unregister;
1943 /* Make room for T.70 header */
1944 info->xmit_buf += 4;
1948 for (i--; i >= 0; i--) {
1950 #ifdef CONFIG_ISDN_TTY_FAX
1953 kfree(info->xmit_buf - 4);
1955 tty_unregister_driver(m->tty_modem);
1957 put_tty_driver(m->tty_modem);
1958 m->tty_modem = NULL;
1968 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1969 info = &dev->mdm.info[i];
1970 isdn_tty_cleanup_xmit(info);
1971 #ifdef CONFIG_ISDN_TTY_FAX
1974 kfree(info->xmit_buf - 4);
1976 tty_unregister_driver(dev->mdm.tty_modem);
1977 put_tty_driver(dev->mdm.tty_modem);
1978 dev->mdm.tty_modem = NULL;
1983 * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx)
1984 * match the MSN against the MSNs (glob patterns) defined for tty_emulator,
1985 * and return 0 for match, 1 for no match, 2 if MSN could match if longer.
1989 isdn_tty_match_icall(char *cid, atemu *emu, int di)
1991 #ifdef ISDN_DEBUG_MODEM_ICALL
1992 printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n",
1993 emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di),
1994 emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]);
1996 if (strlen(emu->lmsn)) {
1997 char *p = emu->lmsn;
2003 if ((q = strchr(p, ';')))
2005 if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret)
2007 #ifdef ISDN_DEBUG_MODEM_ICALL
2008 printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n",
2009 p, isdn_map_eaz2msn(emu->msn, di), tmp);
2024 tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di));
2025 #ifdef ISDN_DEBUG_MODEM_ICALL
2026 printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n",
2027 isdn_map_eaz2msn(emu->msn, di), tmp);
2034 * An incoming call-request has arrived.
2035 * Search the tty-devices for an appropriate device and bind
2036 * it to the ISDN-Channel.
2039 * 0 = No matching device found.
2040 * 1 = A matching device found.
2041 * 3 = No match found, but eventually would match, if
2045 isdn_tty_find_icall(int di, int ch, setup_parm *setup)
2056 if (!setup->phone[0]) {
2058 printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n");
2061 si1 = (int) setup->si1;
2062 si2 = (int) setup->si2;
2063 if (!setup->eazmsn[0]) {
2064 printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n");
2067 eaz = setup->eazmsn;
2068 #ifdef ISDN_DEBUG_MODEM_ICALL
2069 printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2);
2072 spin_lock_irqsave(&dev->lock, flags);
2073 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2074 modem_info *info = &dev->mdm.info[i];
2076 if (info->count == 0)
2078 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
2079 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
2080 idx = isdn_dc2minor(di, ch);
2081 #ifdef ISDN_DEBUG_MODEM_ICALL
2082 printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret);
2083 printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx,
2084 info->flags, info->isdn_driver, info->isdn_channel,
2088 #ifndef FIX_FILE_TRANSFER
2089 (info->flags & ISDN_ASYNC_NORMAL_ACTIVE) &&
2091 (info->isdn_driver == -1) &&
2092 (info->isdn_channel == -1) &&
2093 (USG_NONE(dev->usage[idx]))) {
2096 if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret)
2098 if (!matchret) { /* EAZ is matching */
2099 info->isdn_driver = di;
2100 info->isdn_channel = ch;
2101 info->drv_index = idx;
2102 dev->m_idx[idx] = info->line;
2103 dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
2104 dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]);
2105 strcpy(dev->num[idx], nr);
2106 strcpy(info->emu.cpn, eaz);
2107 info->emu.mdmreg[REG_SI1I] = si2bit[si1];
2108 info->emu.mdmreg[REG_PLAN] = setup->plan;
2109 info->emu.mdmreg[REG_SCREEN] = setup->screen;
2111 spin_unlock_irqrestore(&dev->lock, flags);
2112 printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr,
2114 info->msr |= UART_MSR_RI;
2115 isdn_tty_modem_result(RESULT_RING, info);
2116 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1);
2122 spin_unlock_irqrestore(&dev->lock, flags);
2123 printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz,
2124 ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2))? "rejected" : "ignored");
2125 return (wret == 2)?3:0;
2128 #define TTY_IS_ACTIVE(info) \
2129 (info->flags & (ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE))
2132 isdn_tty_stat_callback(int i, isdn_ctrl *c)
2140 if ((mi = dev->m_idx[i]) >= 0) {
2141 info = &dev->mdm.info[mi];
2142 switch (c->command) {
2143 case ISDN_STAT_CINF:
2144 printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num);
2145 info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10);
2146 if (e == (char *)c->parm.num)
2147 info->emu.charge = 0;
2150 case ISDN_STAT_BSENT:
2151 #ifdef ISDN_TTY_STAT_DEBUG
2152 printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line);
2154 if ((info->isdn_driver == c->driver) &&
2155 (info->isdn_channel == c->arg)) {
2156 info->msr |= UART_MSR_CTS;
2157 if (info->send_outstanding)
2158 if (!(--info->send_outstanding))
2159 info->lsr |= UART_LSR_TEMT;
2160 isdn_tty_tint(info);
2164 case ISDN_STAT_CAUSE:
2165 #ifdef ISDN_TTY_STAT_DEBUG
2166 printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line);
2168 /* Signal cause to tty-device */
2169 strncpy(info->last_cause, c->parm.num, 5);
2171 case ISDN_STAT_DISPLAY:
2172 #ifdef ISDN_TTY_STAT_DEBUG
2173 printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line);
2175 /* Signal display to tty-device */
2176 if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) &&
2177 !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) {
2178 isdn_tty_at_cout("\r\n", info);
2179 isdn_tty_at_cout("DISPLAY: ", info);
2180 isdn_tty_at_cout(c->parm.display, info);
2181 isdn_tty_at_cout("\r\n", info);
2184 case ISDN_STAT_DCONN:
2185 #ifdef ISDN_TTY_STAT_DEBUG
2186 printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line);
2188 if (TTY_IS_ACTIVE(info)) {
2189 if (info->dialing == 1) {
2195 case ISDN_STAT_DHUP:
2196 #ifdef ISDN_TTY_STAT_DEBUG
2197 printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line);
2199 if (TTY_IS_ACTIVE(info)) {
2200 if (info->dialing == 1)
2201 isdn_tty_modem_result(RESULT_BUSY, info);
2202 if (info->dialing > 1)
2203 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
2205 #ifdef ISDN_DEBUG_MODEM_HUP
2206 printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n");
2208 isdn_tty_modem_hup(info, 0);
2212 case ISDN_STAT_BCONN:
2213 #ifdef ISDN_TTY_STAT_DEBUG
2214 printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line);
2216 /* Wake up any processes waiting
2217 * for incoming call of this device when
2218 * DCD follow the state of incoming carrier
2220 if (info->blocked_open &&
2221 (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
2222 wake_up_interruptible(&info->open_wait);
2225 /* Schedule CONNECT-Message to any tty
2226 * waiting for it and
2227 * set DCD-bit of its modem-status.
2229 if (TTY_IS_ACTIVE(info) ||
2230 (info->blocked_open && (info->emu.mdmreg[REG_DCD] & BIT_DCD))) {
2231 info->msr |= UART_MSR_DCD;
2232 info->emu.charge = 0;
2233 if (info->dialing & 0xf)
2239 if (USG_MODEM(dev->usage[i])) {
2240 if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) {
2241 strcpy(info->emu.connmsg, c->parm.num);
2242 isdn_tty_modem_result(RESULT_CONNECT, info);
2244 isdn_tty_modem_result(RESULT_CONNECT64000, info);
2246 if (USG_VOICE(dev->usage[i]))
2247 isdn_tty_modem_result(RESULT_VCON, info);
2251 case ISDN_STAT_BHUP:
2252 #ifdef ISDN_TTY_STAT_DEBUG
2253 printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line);
2255 if (TTY_IS_ACTIVE(info)) {
2256 #ifdef ISDN_DEBUG_MODEM_HUP
2257 printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n");
2259 isdn_tty_modem_hup(info, 0);
2263 case ISDN_STAT_NODCH:
2264 #ifdef ISDN_TTY_STAT_DEBUG
2265 printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line);
2267 if (TTY_IS_ACTIVE(info)) {
2268 if (info->dialing) {
2272 sprintf(info->last_cause, "0000");
2273 isdn_tty_modem_result(RESULT_NO_DIALTONE, info);
2275 isdn_tty_modem_hup(info, 0);
2279 case ISDN_STAT_UNLOAD:
2280 #ifdef ISDN_TTY_STAT_DEBUG
2281 printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line);
2283 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2284 info = &dev->mdm.info[i];
2285 if (info->isdn_driver == c->driver) {
2287 isdn_tty_modem_hup(info, 1);
2291 #ifdef CONFIG_ISDN_TTY_FAX
2292 case ISDN_STAT_FAXIND:
2293 if (TTY_IS_ACTIVE(info)) {
2294 isdn_tty_fax_command(info, c);
2298 #ifdef CONFIG_ISDN_AUDIO
2299 case ISDN_STAT_AUDIO:
2300 if (TTY_IS_ACTIVE(info)) {
2301 switch(c->parm.num[0]) {
2302 case ISDN_AUDIO_DTMF:
2303 if (info->vonline) {
2304 isdn_audio_put_dle_code(info,
2317 /*********************************************************************
2318 Modem-Emulator-Routines
2319 *********************************************************************/
2321 #define cmdchar(c) ((c>=' ')&&(c<=0x7f))
2324 * Put a message from the AT-emulator into receive-buffer of tty,
2325 * convert CR, LF, and BS to values in modem-registers 3, 4 and 5.
2328 isdn_tty_at_cout(char *msg, modem_info * info)
2330 struct tty_struct *tty;
2331 atemu *m = &info->emu;
2335 struct sk_buff *skb = NULL;
2340 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
2346 spin_lock_irqsave(&info->readlock, flags);
2348 if ((info->flags & ISDN_ASYNC_CLOSING) || (!tty)) {
2349 spin_unlock_irqrestore(&info->readlock, flags);
2353 /* use queue instead of direct, if online and */
2354 /* data is in queue or buffer is full */
2355 if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
2356 !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
2357 skb = alloc_skb(l, GFP_ATOMIC);
2359 spin_unlock_irqrestore(&info->readlock, flags);
2362 sp = skb_put(skb, l);
2363 #ifdef CONFIG_ISDN_AUDIO
2364 ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
2365 ISDN_AUDIO_SKB_LOCK(skb) = 0;
2369 for (p = msg; *p; p++) {
2372 c = m->mdmreg[REG_CR];
2375 c = m->mdmreg[REG_LF];
2378 c = m->mdmreg[REG_BS];
2386 if(tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
2391 __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb);
2392 dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len;
2393 spin_unlock_irqrestore(&info->readlock, flags);
2394 /* Schedule dequeuing */
2395 if (dev->modempoll && info->rcvsched)
2396 isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
2399 spin_unlock_irqrestore(&info->readlock, flags);
2400 tty_flip_buffer_push(tty);
2405 * Perform ATH Hangup
2408 isdn_tty_on_hook(modem_info * info)
2410 if (info->isdn_channel >= 0) {
2411 #ifdef ISDN_DEBUG_MODEM_HUP
2412 printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n");
2414 isdn_tty_modem_hup(info, 1);
2419 isdn_tty_off_hook(void)
2421 printk(KERN_DEBUG "isdn_tty_off_hook\n");
2424 #define PLUSWAIT1 (HZ/2) /* 0.5 sec. */
2425 #define PLUSWAIT2 (HZ*3/2) /* 1.5 sec */
2428 * Check Buffer for Modem-escape-sequence, activate timer-callback to
2429 * isdn_tty_modem_escape() if sequence found.
2432 * p pointer to databuffer
2433 * plus escape-character
2434 * count length of buffer
2435 * pluscount count of valid escape-characters so far
2436 * lastplus timestamp of last character
2439 isdn_tty_check_esc(const u_char * p, u_char plus, int count, int *pluscount,
2450 if (*(p++) == plus) {
2451 if ((*pluscount)++) {
2452 /* Time since last '+' > 0.5 sec. ? */
2453 if (time_after(jiffies, *lastplus + PLUSWAIT1))
2456 /* Time since last non-'+' < 1.5 sec. ? */
2457 if (time_before(jiffies, *lastplus + PLUSWAIT2))
2460 if ((*pluscount == 3) && (count == 1))
2461 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1);
2466 *lastplus = jiffies;
2472 * Return result of AT-emulator to tty-receive-buffer, depending on
2473 * modem-register 12, bit 0 and 1.
2474 * For CONNECT-messages also switch to online-mode.
2475 * For RING-message handle auto-ATA if register 0 != 0
2479 isdn_tty_modem_result(int code, modem_info * info)
2481 atemu *m = &info->emu;
2482 static char *msg[] =
2483 {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR",
2484 "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER",
2485 "RINGING", "NO MSN/EAZ", "VCON", "RUNG"};
2486 char s[ISDN_MSNLEN+10];
2490 m->mdmreg[REG_RINGCNT]++;
2491 if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA])
2492 /* Automatically accept incoming call */
2493 isdn_tty_cmd_ATA(info);
2495 case RESULT_NO_CARRIER:
2496 #ifdef ISDN_DEBUG_MODEM_HUP
2497 printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n",
2498 (info->flags & ISDN_ASYNC_CLOSING),
2501 m->mdmreg[REG_RINGCNT] = 0;
2502 del_timer(&info->nc_timer);
2504 if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
2507 #ifdef CONFIG_ISDN_AUDIO
2508 if (info->vonline & 1) {
2509 #ifdef ISDN_DEBUG_MODEM_VOICE
2510 printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n",
2513 /* voice-recording, add DLE-ETX */
2514 isdn_tty_at_cout("\020\003", info);
2516 if (info->vonline & 2) {
2517 #ifdef ISDN_DEBUG_MODEM_VOICE
2518 printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n",
2521 /* voice-playing, add DLE-DC4 */
2522 isdn_tty_at_cout("\020\024", info);
2526 case RESULT_CONNECT:
2527 case RESULT_CONNECT64000:
2528 sprintf(info->last_cause, "0000");
2533 #ifdef ISDN_DEBUG_MODEM_VOICE
2534 printk(KERN_DEBUG "res3: send VCON on ttyI%d\n",
2537 sprintf(info->last_cause, "0000");
2541 } /* switch(code) */
2543 if (m->mdmreg[REG_RESP] & BIT_RESP) {
2545 if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) {
2546 /* Show numeric results only */
2547 sprintf(s, "\r\n%d\r\n", code);
2548 isdn_tty_at_cout(s, info);
2550 if (code == RESULT_RING) {
2551 /* return if "show RUNG" and ringcounter>1 */
2552 if ((m->mdmreg[REG_RUNG] & BIT_RUNG) &&
2553 (m->mdmreg[REG_RINGCNT] > 1))
2555 /* print CID, _before_ _every_ ring */
2556 if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) {
2557 isdn_tty_at_cout("\r\nCALLER NUMBER: ", info);
2558 isdn_tty_at_cout(dev->num[info->drv_index], info);
2559 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2560 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2561 isdn_tty_at_cout(info->emu.cpn, info);
2565 isdn_tty_at_cout("\r\n", info);
2566 isdn_tty_at_cout(msg[code], info);
2568 case RESULT_CONNECT:
2569 switch (m->mdmreg[REG_L2PROT]) {
2570 case ISDN_PROTO_L2_MODEM:
2571 isdn_tty_at_cout(" ", info);
2572 isdn_tty_at_cout(m->connmsg, info);
2577 /* Append CPN, if enabled */
2578 if ((m->mdmreg[REG_CPN] & BIT_CPN)) {
2579 sprintf(s, "/%s", m->cpn);
2580 isdn_tty_at_cout(s, info);
2582 /* Print CID only once, _after_ 1st RING */
2583 if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) &&
2584 (m->mdmreg[REG_RINGCNT] == 1)) {
2585 isdn_tty_at_cout("\r\n", info);
2586 isdn_tty_at_cout("CALLER NUMBER: ", info);
2587 isdn_tty_at_cout(dev->num[info->drv_index], info);
2588 if (m->mdmreg[REG_CDN] & BIT_CDN) {
2589 isdn_tty_at_cout("\r\nCALLED NUMBER: ", info);
2590 isdn_tty_at_cout(info->emu.cpn, info);
2594 case RESULT_NO_CARRIER:
2595 case RESULT_NO_DIALTONE:
2597 case RESULT_NO_ANSWER:
2598 m->mdmreg[REG_RINGCNT] = 0;
2599 /* Append Cause-Message if enabled */
2600 if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) {
2601 sprintf(s, "/%s", info->last_cause);
2602 isdn_tty_at_cout(s, info);
2605 case RESULT_CONNECT64000:
2606 /* Append Protocol to CONNECT message */
2607 switch (m->mdmreg[REG_L2PROT]) {
2608 case ISDN_PROTO_L2_X75I:
2609 case ISDN_PROTO_L2_X75UI:
2610 case ISDN_PROTO_L2_X75BUI:
2611 isdn_tty_at_cout("/X.75", info);
2613 case ISDN_PROTO_L2_HDLC:
2614 isdn_tty_at_cout("/HDLC", info);
2616 case ISDN_PROTO_L2_V11096:
2617 isdn_tty_at_cout("/V110/9600", info);
2619 case ISDN_PROTO_L2_V11019:
2620 isdn_tty_at_cout("/V110/19200", info);
2622 case ISDN_PROTO_L2_V11038:
2623 isdn_tty_at_cout("/V110/38400", info);
2626 if (m->mdmreg[REG_T70] & BIT_T70) {
2627 isdn_tty_at_cout("/T.70", info);
2628 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2629 isdn_tty_at_cout("+", info);
2633 isdn_tty_at_cout("\r\n", info);
2636 if (code == RESULT_NO_CARRIER) {
2637 if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
2640 if ((info->flags & ISDN_ASYNC_CHECK_CD) &&
2641 (!((info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
2642 (info->flags & ISDN_ASYNC_CALLOUT_NOHUP)))) {
2643 tty_hangup(info->tty);
2650 * Display a modem-register-value.
2653 isdn_tty_show_profile(int ridx, modem_info * info)
2657 sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]);
2658 isdn_tty_at_cout(v, info);
2662 * Get MSN-string from char-pointer, set pointer to end of number
2665 isdn_tty_get_msnstr(char *n, char **p)
2667 int limit = ISDN_MSNLEN - 1;
2669 while (((*p[0] >= '0' && *p[0] <= '9') ||
2670 /* Why a comma ??? */
2671 (*p[0] == ',') || (*p[0] == ':')) &&
2678 * Get phone-number from modem-commandbuffer
2681 isdn_tty_getdial(char *p, char *q,int cnt)
2684 int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid
2687 while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt>0) {
2688 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
2689 ((*p == 'R') && first) ||
2690 (*p == '*') || (*p == '#')) {
2702 #define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; }
2703 #define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; }
2706 isdn_tty_report(modem_info * info)
2708 atemu *m = &info->emu;
2711 isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info);
2712 sprintf(s, " Remote Number: %s\r\n", info->last_num);
2713 isdn_tty_at_cout(s, info);
2714 sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming");
2715 isdn_tty_at_cout(s, info);
2716 isdn_tty_at_cout(" Layer-2 Protocol: ", info);
2717 switch (info->last_l2) {
2718 case ISDN_PROTO_L2_X75I:
2719 isdn_tty_at_cout("X.75i", info);
2721 case ISDN_PROTO_L2_X75UI:
2722 isdn_tty_at_cout("X.75ui", info);
2724 case ISDN_PROTO_L2_X75BUI:
2725 isdn_tty_at_cout("X.75bui", info);
2727 case ISDN_PROTO_L2_HDLC:
2728 isdn_tty_at_cout("HDLC", info);
2730 case ISDN_PROTO_L2_V11096:
2731 isdn_tty_at_cout("V.110 9600 Baud", info);
2733 case ISDN_PROTO_L2_V11019:
2734 isdn_tty_at_cout("V.110 19200 Baud", info);
2736 case ISDN_PROTO_L2_V11038:
2737 isdn_tty_at_cout("V.110 38400 Baud", info);
2739 case ISDN_PROTO_L2_TRANS:
2740 isdn_tty_at_cout("transparent", info);
2742 case ISDN_PROTO_L2_MODEM:
2743 isdn_tty_at_cout("modem", info);
2745 case ISDN_PROTO_L2_FAX:
2746 isdn_tty_at_cout("fax", info);
2749 isdn_tty_at_cout("unknown", info);
2752 if (m->mdmreg[REG_T70] & BIT_T70) {
2753 isdn_tty_at_cout("/T.70", info);
2754 if (m->mdmreg[REG_T70] & BIT_T70_EXT)
2755 isdn_tty_at_cout("+", info);
2757 isdn_tty_at_cout("\r\n", info);
2758 isdn_tty_at_cout(" Service: ", info);
2759 switch (info->last_si) {
2761 isdn_tty_at_cout("audio\r\n", info);
2764 isdn_tty_at_cout("btx\r\n", info);
2767 isdn_tty_at_cout("data\r\n", info);
2770 sprintf(s, "%d\r\n", info->last_si);
2771 isdn_tty_at_cout(s, info);
2774 sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote");
2775 isdn_tty_at_cout(s, info);
2776 sprintf(s, " Last cause: %s\r\n", info->last_cause);
2777 isdn_tty_at_cout(s, info);
2781 * Parse AT&.. commands.
2784 isdn_tty_cmd_ATand(char **p, modem_info * info)
2786 atemu *m = &info->emu;
2790 #define MAXRB (sizeof(rb) - 1)
2794 /* &B - Set Buffersize */
2797 if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX))
2799 #ifdef CONFIG_ISDN_AUDIO
2800 if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF))
2803 m->mdmreg[REG_PSIZE] = i / 16;
2804 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2805 switch (m->mdmreg[REG_L2PROT]) {
2806 case ISDN_PROTO_L2_V11096:
2807 case ISDN_PROTO_L2_V11019:
2808 case ISDN_PROTO_L2_V11038:
2809 info->xmit_size /= 10;
2813 /* &C - DCD Status */
2815 switch (isdn_getnum(p)) {
2817 m->mdmreg[REG_DCD] &= ~BIT_DCD;
2820 m->mdmreg[REG_DCD] |= BIT_DCD;
2827 /* &D - Set DTR-Low-behavior */
2829 switch (isdn_getnum(p)) {
2831 m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP;
2832 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2835 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2836 m->mdmreg[REG_DTRR] &= ~BIT_DTRR;
2839 m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP;
2840 m->mdmreg[REG_DTRR] |= BIT_DTRR;
2847 /* &E -Set EAZ/MSN */
2849 isdn_tty_get_msnstr(m->msn, p);
2852 /* &F -Set Factory-Defaults */
2854 if (info->msr & UART_MSR_DCD)
2856 isdn_tty_reset_profile(m);
2857 isdn_tty_modem_reset_regs(info, 1);
2859 #ifdef DUMMY_HAYES_AT
2861 /* only for be compilant with common scripts */
2862 /* &K Flowcontrol - no function */
2868 /* &L -Set Numbers to listen on */
2871 while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
2872 (i < ISDN_LMSNLEN - 1))
2873 m->lmsn[i++] = *p[0]++;
2877 /* &R - Set V.110 bitrate adaption */
2882 /* Switch off V.110, back to X.75 */
2883 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2884 m->mdmreg[REG_SI2] = 0;
2885 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2888 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096;
2889 m->mdmreg[REG_SI2] = 197;
2890 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2893 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019;
2894 m->mdmreg[REG_SI2] = 199;
2895 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2898 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038;
2899 m->mdmreg[REG_SI2] = 198; /* no existing standard for this */
2900 info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10;
2905 /* Switch off T.70 */
2906 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2908 m->mdmreg[REG_SI1] |= 4;
2911 /* &S - Set Windowsize */
2914 if ((i > 0) && (i < 9))
2915 m->mdmreg[REG_WSIZE] = i;
2920 /* &V - Show registers */
2922 isdn_tty_at_cout("\r\n", info);
2923 for (i = 0; i < ISDN_MODEM_NUMREG; i++) {
2924 sprintf(rb, "S%02d=%03d%s", i,
2925 m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n");
2926 isdn_tty_at_cout(rb, info);
2928 sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n",
2929 strlen(m->msn) ? m->msn : "None");
2930 isdn_tty_at_cout(rb, info);
2931 if (strlen(m->lmsn)) {
2932 isdn_tty_at_cout("\r\nListen: ", info);
2933 isdn_tty_at_cout(m->lmsn, info);
2934 isdn_tty_at_cout("\r\n", info);
2938 /* &W - Write Profile */
2943 modem_write_profile(m);
2950 /* &X - Switch to BTX-Mode and T.70 */
2952 switch (isdn_getnum(p)) {
2954 m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT);
2955 info->xmit_size = m->mdmreg[REG_PSIZE] * 16;
2958 m->mdmreg[REG_T70] |= BIT_T70;
2959 m->mdmreg[REG_T70] &= ~BIT_T70_EXT;
2960 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2961 info->xmit_size = 112;
2962 m->mdmreg[REG_SI1] = 4;
2963 m->mdmreg[REG_SI2] = 0;
2966 m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT);
2967 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
2968 info->xmit_size = 112;
2969 m->mdmreg[REG_SI1] = 4;
2970 m->mdmreg[REG_SI2] = 0;
2983 isdn_tty_check_ats(int mreg, int mval, modem_info * info, atemu * m)
2985 /* Some plausibility checks */
2988 if (mval > ISDN_PROTO_L2_MAX)
2992 if ((mval * 16) > ISDN_SERIAL_XMIT_MAX)
2994 #ifdef CONFIG_ISDN_AUDIO
2995 if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX))
2998 info->xmit_size = mval * 16;
2999 switch (m->mdmreg[REG_L2PROT]) {
3000 case ISDN_PROTO_L2_V11096:
3001 case ISDN_PROTO_L2_V11019:
3002 case ISDN_PROTO_L2_V11038:
3003 info->xmit_size /= 10;
3009 /* readonly registers */
3016 * Perform ATS command
3019 isdn_tty_cmd_ATS(char **p, modem_info * info)
3021 atemu *m = &info->emu;
3027 mreg = isdn_getnum(p);
3028 if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG)
3033 mval = isdn_getnum(p);
3034 if (mval < 0 || mval > 255)
3036 if (isdn_tty_check_ats(mreg, mval, info, m))
3038 m->mdmreg[mreg] = mval;
3041 /* Set/Clear a single bit */
3043 bitpos = isdn_getnum(p);
3044 if ((bitpos < 0) || (bitpos > 7))
3049 bval = isdn_getnum(p);
3050 if (bval < 0 || bval > 1)
3053 mval = m->mdmreg[mreg] | (1 << bitpos);
3055 mval = m->mdmreg[mreg] & ~(1 << bitpos);
3056 if (isdn_tty_check_ats(mreg, mval, info, m))
3058 m->mdmreg[mreg] = mval;
3062 isdn_tty_at_cout("\r\n", info);
3063 isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0",
3072 isdn_tty_show_profile(mreg, info);
3082 * Perform ATA command
3085 isdn_tty_cmd_ATA(modem_info * info)
3087 atemu *m = &info->emu;
3091 if (info->msr & UART_MSR_RI) {
3092 /* Accept incoming call */
3094 strcpy(info->last_num, dev->num[info->drv_index]);
3095 m->mdmreg[REG_RINGCNT] = 0;
3096 info->msr &= ~UART_MSR_RI;
3097 l2 = m->mdmreg[REG_L2PROT];
3098 #ifdef CONFIG_ISDN_AUDIO
3099 /* If more than one bit set in reg18, autoselect Layer2 */
3100 if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) {
3101 if (m->mdmreg[REG_SI1I] == 1) {
3102 if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX))
3103 l2 = ISDN_PROTO_L2_TRANS;
3105 l2 = ISDN_PROTO_L2_X75I;
3108 cmd.driver = info->isdn_driver;
3109 cmd.command = ISDN_CMD_SETL2;
3110 cmd.arg = info->isdn_channel + (l2 << 8);
3113 cmd.driver = info->isdn_driver;
3114 cmd.command = ISDN_CMD_SETL3;
3115 cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8);
3116 #ifdef CONFIG_ISDN_TTY_FAX
3117 if (l2 == ISDN_PROTO_L2_FAX) {
3118 cmd.parm.fax = info->fax;
3119 info->fax->direction = ISDN_TTY_FAX_CONN_IN;
3123 cmd.driver = info->isdn_driver;
3124 cmd.arg = info->isdn_channel;
3125 cmd.command = ISDN_CMD_ACCEPTD;
3127 info->emu.carrierwait = 0;
3129 isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1);
3131 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3134 #ifdef CONFIG_ISDN_AUDIO
3136 * Parse AT+F.. commands
3139 isdn_tty_cmd_PLUSF(char **p, modem_info * info)
3141 atemu *m = &info->emu;
3144 if (!strncmp(p[0], "CLASS", 5)) {
3149 sprintf(rs, "\r\n%d",
3150 (m->mdmreg[REG_SI1] & 1) ? 8 : 0);
3151 #ifdef CONFIG_ISDN_TTY_FAX
3152 if (TTY_IS_FCLASS2(info))
3153 sprintf(rs, "\r\n2");
3154 else if (TTY_IS_FCLASS1(info))
3155 sprintf(rs, "\r\n1");
3157 isdn_tty_at_cout(rs, info);
3164 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3165 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3166 m->mdmreg[REG_SI1] = 4;
3168 m->mdmreg[REG_PSIZE] * 16;
3170 #ifdef CONFIG_ISDN_TTY_FAX
3173 if (!(dev->global_features &
3174 ISDN_FEATURE_L3_FCLASS1))
3176 m->mdmreg[REG_SI1] = 1;
3177 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3178 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1;
3180 m->mdmreg[REG_PSIZE] * 16;
3184 if (!(dev->global_features &
3185 ISDN_FEATURE_L3_FCLASS2))
3187 m->mdmreg[REG_SI1] = 1;
3188 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX;
3189 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2;
3191 m->mdmreg[REG_PSIZE] * 16;
3196 /* L2 will change on dialout with si=1 */
3197 m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I;
3198 m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS;
3199 m->mdmreg[REG_SI1] = 5;
3200 info->xmit_size = VBUF;
3204 strcpy(rs, "\r\n0,");
3205 #ifdef CONFIG_ISDN_TTY_FAX
3206 if (dev->global_features &
3207 ISDN_FEATURE_L3_FCLASS1)
3209 if (dev->global_features &
3210 ISDN_FEATURE_L3_FCLASS2)
3214 isdn_tty_at_cout(rs, info);
3225 #ifdef CONFIG_ISDN_TTY_FAX
3226 return (isdn_tty_cmd_PLUSF_FAX(p, info));
3233 * Parse AT+V.. commands
3236 isdn_tty_cmd_PLUSV(char **p, modem_info * info)
3238 atemu *m = &info->emu;
3240 static char *vcmd[] =
3241 {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL};
3249 if (!strncmp(vcmd[i], p[0], 2)) {
3257 /* AT+VNH - Auto hangup feature */
3261 isdn_tty_at_cout("\r\n1", info);
3271 isdn_tty_at_cout("\r\n1", info);
3282 /* AT+VIP - Reset all voice parameters */
3283 isdn_tty_modem_reset_vpar(m);
3286 /* AT+VLS - Select device, accept incoming call */
3290 sprintf(rs, "\r\n%d", m->vpar[0]);
3291 isdn_tty_at_cout(rs, info);
3306 isdn_tty_at_cout("\r\n0,2", info);
3317 /* AT+VRX - Start recording */
3320 if (info->online != 1) {
3321 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3324 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3325 if (!info->dtmf_state) {
3326 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3329 info->silence_state = isdn_audio_silence_init(info->silence_state);
3330 if (!info->silence_state) {
3331 printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n");
3334 if (m->vpar[3] < 5) {
3335 info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]);
3336 if (!info->adpcmr) {
3337 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3341 #ifdef ISDN_DEBUG_AT
3342 printk(KERN_DEBUG "AT: +VRX\n");
3345 isdn_tty_modem_result(RESULT_CONNECT, info);
3349 /* AT+VSD - Silence detection */
3353 sprintf(rs, "\r\n<%d>,<%d>",
3356 isdn_tty_at_cout(rs, info);
3360 if ((*p[0]>='0') && (*p[0]<='9')) {
3361 par1 = isdn_getnum(p);
3362 if ((par1 < 0) || (par1 > 31))
3367 par2 = isdn_getnum(p);
3368 if ((par2 < 0) || (par2 > 255))
3376 isdn_tty_at_cout("\r\n<0-31>,<0-255>",
3387 /* AT+VSM - Select compression */
3391 sprintf(rs, "\r\n<%d>,<%d><8000>",
3394 isdn_tty_at_cout(rs, info);
3404 par1 = isdn_getnum(p);
3405 if ((par1 < 2) || (par1 > 6))
3411 isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n",
3413 isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n",
3415 isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n",
3417 isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n",
3419 isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n",
3431 /* AT+VTX - Start sending */
3434 if (info->online != 1) {
3435 isdn_tty_modem_result(RESULT_NO_ANSWER, info);
3438 info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state);
3439 if (!info->dtmf_state) {
3440 printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n");
3443 if (m->vpar[3] < 5) {
3444 info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]);
3445 if (!info->adpcms) {
3446 printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n");
3450 #ifdef ISDN_DEBUG_AT
3451 printk(KERN_DEBUG "AT: +VTX\n");
3455 isdn_tty_modem_result(RESULT_CONNECT, info);
3459 /* AT+VDD - DTMF detection */
3463 sprintf(rs, "\r\n<%d>,<%d>",
3466 isdn_tty_at_cout(rs, info);
3470 if ((*p[0]>='0') && (*p[0]<='9')) {
3471 if (info->online != 1)
3473 par1 = isdn_getnum(p);
3474 if ((par1 < 0) || (par1 > 15))
3479 par2 = isdn_getnum(p);
3480 if ((par2 < 0) || (par2 > 255))
3484 cmd.driver = info->isdn_driver;
3485 cmd.command = ISDN_CMD_AUDIO;
3486 cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8);
3487 cmd.parm.num[0] = par1;
3488 cmd.parm.num[1] = par2;
3494 isdn_tty_at_cout("\r\n<0-15>,<0-255>",
3509 #endif /* CONFIG_ISDN_AUDIO */
3512 * Parse and perform an AT-command-line.
3515 isdn_tty_parse_at(modem_info * info)
3517 atemu *m = &info->emu;
3519 char ds[ISDN_MSNLEN];
3521 #ifdef ISDN_DEBUG_AT
3522 printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd);
3524 for (p = &m->mdmcmd[2]; *p;) {
3530 /* A - Accept incoming call */
3532 isdn_tty_cmd_ATA(info);
3537 if (info->msr & UART_MSR_DCD)
3539 if (info->msr & UART_MSR_RI) {
3540 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3543 isdn_tty_getdial(++p, ds, sizeof ds);
3545 if (!strlen(m->msn))
3546 isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info);
3547 else if (strlen(ds))
3548 isdn_tty_dial(ds, info, m);
3553 /* E - Turn Echo on/off */
3555 switch (isdn_getnum(&p)) {
3557 m->mdmreg[REG_ECHO] &= ~BIT_ECHO;
3560 m->mdmreg[REG_ECHO] |= BIT_ECHO;
3567 /* H - On/Off-hook */
3572 isdn_tty_on_hook(info);
3576 isdn_tty_off_hook();
3579 isdn_tty_on_hook(info);
3584 /* I - Information */
3586 isdn_tty_at_cout("\r\nLinux ISDN", info);
3594 isdn_tty_report(info);
3598 snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge);
3599 isdn_tty_at_cout(ds, info);
3604 #ifdef DUMMY_HAYES_AT
3607 /* only for be compilant with common scripts */
3616 if (info->msr & UART_MSR_DCD)
3617 /* if B-Channel is up */
3618 isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT:RESULT_CONNECT64000, info);
3620 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3623 /* Q - Turn Emulator messages on/off */
3625 switch (isdn_getnum(&p)) {
3627 m->mdmreg[REG_RESP] |= BIT_RESP;
3630 m->mdmreg[REG_RESP] &= ~BIT_RESP;
3637 /* S - Set/Get Register */
3639 if (isdn_tty_cmd_ATS(&p, info))
3643 /* V - Numeric or ASCII Emulator-messages */
3645 switch (isdn_getnum(&p)) {
3647 m->mdmreg[REG_RESP] |= BIT_RESPNUM;
3650 m->mdmreg[REG_RESP] &= ~BIT_RESPNUM;
3657 /* Z - Load Registers from Profile */
3659 if (info->msr & UART_MSR_DCD) {
3661 isdn_tty_on_hook(info);
3663 isdn_tty_modem_reset_regs(info, 1);
3668 #ifdef CONFIG_ISDN_AUDIO
3671 if (isdn_tty_cmd_PLUSF(&p, info))
3675 if ((!(m->mdmreg[REG_SI1] & 1)) ||
3676 (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM))
3679 if (isdn_tty_cmd_PLUSV(&p, info))
3682 #endif /* CONFIG_ISDN_AUDIO */
3683 case 'S': /* SUSPEND */
3685 isdn_tty_get_msnstr(ds, &p);
3686 isdn_tty_suspend(ds, info, m);
3688 case 'R': /* RESUME */
3690 isdn_tty_get_msnstr(ds, &p);
3691 isdn_tty_resume(ds, info, m);
3693 case 'M': /* MESSAGE */
3695 isdn_tty_send_msg(info, m, p);
3703 if (isdn_tty_cmd_ATand(&p, info))
3710 #ifdef CONFIG_ISDN_AUDIO
3713 isdn_tty_modem_result(RESULT_OK, info);
3716 /* Need own toupper() because standard-toupper is not available
3719 #define my_toupper(c) (((c>='a')&&(c<='z'))?(c&0xdf):c)
3722 * Perform line-editing of AT-commands
3726 * count length of buffer
3727 * channel index to line (minor-device)
3730 isdn_tty_edit_at(const char *p, int count, modem_info * info)
3732 atemu *m = &info->emu;
3738 for (cnt = count; cnt > 0; p++, cnt--) {
3741 if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) {
3742 /* Separator (CR or LF) */
3743 m->mdmcmd[m->mdmcmdl] = 0;
3744 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3747 isdn_tty_at_cout(eb, info);
3749 if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2))))
3750 isdn_tty_parse_at(info);
3754 if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) {
3755 /* Backspace-Function */
3756 if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) {
3759 if (m->mdmreg[REG_ECHO] & BIT_ECHO)
3760 isdn_tty_at_cout("\b", info);
3765 if (m->mdmreg[REG_ECHO] & BIT_ECHO) {
3768 isdn_tty_at_cout(eb, info);
3770 if (m->mdmcmdl < 255) {
3772 switch (m->mdmcmdl) {
3775 m->mdmcmd[m->mdmcmdl] = c;
3776 m->mdmcmd[++m->mdmcmdl] = 0;
3780 /* Fall through, check for 'A' */
3783 m->mdmcmd[m->mdmcmdl] = c;
3784 m->mdmcmd[++m->mdmcmdl] = 0;
3788 m->mdmcmd[m->mdmcmdl] = c;
3789 m->mdmcmd[++m->mdmcmdl] = 0;
3798 * Switch all modem-channels who are online and got a valid
3799 * escape-sequence 1.5 seconds ago, to command-mode.
3800 * This function is called every second via timer-interrupt from within
3801 * timer-dispatcher isdn_timer_function()
3804 isdn_tty_modem_escape(void)
3810 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
3811 if (USG_MODEM(dev->usage[i]))
3812 if ((midx = dev->m_idx[i]) >= 0) {
3813 modem_info *info = &dev->mdm.info[midx];
3816 if ((info->emu.pluscount == 3) &&
3817 time_after(jiffies , info->emu.lastplus + PLUSWAIT2)) {
3818 info->emu.pluscount = 0;
3820 isdn_tty_modem_result(RESULT_OK, info);
3824 isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
3828 * Put a RING-message to all modem-channels who have the RI-bit set.
3829 * This function is called every second via timer-interrupt from within
3830 * timer-dispatcher isdn_timer_function()
3833 isdn_tty_modem_ring(void)
3838 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3839 modem_info *info = &dev->mdm.info[i];
3840 if (info->msr & UART_MSR_RI) {
3842 isdn_tty_modem_result(RESULT_RING, info);
3845 isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton);
3849 * For all online tty's, try sending data to
3853 isdn_tty_modem_xmit(void)
3858 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3859 modem_info *info = &dev->mdm.info[i];
3862 isdn_tty_senddown(info);
3863 isdn_tty_tint(info);
3866 isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
3870 * Check all channels if we have a 'no carrier' timeout.
3871 * Timeout value is set by Register S7.
3874 isdn_tty_carrier_timeout(void)
3879 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
3880 modem_info *info = &dev->mdm.info[i];
3881 if (info->dialing) {
3882 if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
3884 isdn_tty_modem_result(RESULT_NO_CARRIER, info);
3885 isdn_tty_modem_hup(info, 1);
3891 isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);