| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 14265 | 77.93% | 18 | 16.51% |
| Andrew Morton | 2613 | 14.28% | 2 | 1.83% |
| Kai Germaschewski | 382 | 2.09% | 18 | 16.51% |
| Jiri Slaby | 376 | 2.05% | 19 | 17.43% |
| Alan Cox | 146 | 0.80% | 6 | 5.50% |
| Al Viro | 140 | 0.76% | 6 | 5.50% |
| Linus Torvalds | 103 | 0.56% | 6 | 5.50% |
| Peter Hurley | 95 | 0.52% | 6 | 5.50% |
| Chen Gang S | 32 | 0.17% | 1 | 0.92% |
| Arnd Bergmann | 27 | 0.15% | 1 | 0.92% |
| Jia-Ju Bai | 20 | 0.11% | 1 | 0.92% |
| Karsten Keil | 16 | 0.09% | 4 | 3.67% |
| Matthias Goebl | 15 | 0.08% | 1 | 0.92% |
| Kees Cook | 14 | 0.08% | 1 | 0.92% |
| Joe Perches | 12 | 0.07% | 1 | 0.92% |
| Adrian Bunk | 9 | 0.05% | 2 | 1.83% |
| Dan Carpenter | 7 | 0.04% | 1 | 0.92% |
| David S. Miller | 4 | 0.02% | 1 | 0.92% |
| Ingo Molnar | 3 | 0.02% | 1 | 0.92% |
| Paul Gortmaker | 3 | 0.02% | 1 | 0.92% |
| Maximilian Attems | 3 | 0.02% | 1 | 0.92% |
| Tejun Heo | 3 | 0.02% | 1 | 0.92% |
| Geliang Tang | 3 | 0.02% | 1 | 0.92% |
| Eric Sesterhenn / Snakebyte | 2 | 0.01% | 1 | 0.92% |
| Alexey Dobriyan | 2 | 0.01% | 1 | 0.92% |
| Guenter Roeck | 2 | 0.01% | 1 | 0.92% |
| Harvey Harrison | 2 | 0.01% | 1 | 0.92% |
| Jeff Dike | 1 | 0.01% | 1 | 0.92% |
| Johannes Berg | 1 | 0.01% | 1 | 0.92% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 0.92% |
| Lucas De Marchi | 1 | 0.01% | 1 | 0.92% |
| Nishanth Aravamudan | 1 | 0.01% | 1 | 0.92% |
| Total | 18304 | 109 |
/* * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel). * * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de) * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #undef ISDN_TTY_STAT_DEBUG #include <linux/isdn.h> #include <linux/serial.h> /* ASYNC_* flags */ #include <linux/slab.h> #include <linux/delay.h> #include <linux/mutex.h> #include <linux/sched/signal.h> #include "isdn_common.h" #include "isdn_tty.h" #ifdef CONFIG_ISDN_AUDIO #include "isdn_audio.h" #define VBUF 0x3e0 #define VBUFX (VBUF/16) #endif #define FIX_FILE_TRANSFER #define DUMMY_HAYES_AT /* Prototypes */ static DEFINE_MUTEX(modem_info_mutex); static int isdn_tty_edit_at(const char *, int, modem_info *); static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *); static void isdn_tty_modem_reset_regs(modem_info *, int); static void isdn_tty_cmd_ATA(modem_info *); static void isdn_tty_flush_buffer(struct tty_struct *); static void isdn_tty_modem_result(int, modem_info *); #ifdef CONFIG_ISDN_AUDIO static int isdn_tty_countDLE(unsigned char *, int); #endif /* Leave this unchanged unless you know what you do! */ #define MODEM_PARANOIA_CHECK #define MODEM_DO_RESTART static int bit2si[8] = {1, 5, 7, 7, 7, 7, 7, 7}; static int si2bit[8] = {4, 1, 4, 4, 4, 4, 4, 4}; /* isdn_tty_try_read() is called from within isdn_tty_rcv_skb() * to stuff incoming data directly into a tty's flip-buffer. This * is done to speed up tty-receiving if the receive-queue is empty. * This routine MUST be called with interrupts off. * Return: * 1 = Success * 0 = Failure, data has to be buffered and later processed by * isdn_tty_readmodem(). */ static int isdn_tty_try_read(modem_info *info, struct sk_buff *skb) { struct tty_port *port = &info->port; int c; int len; char last; if (!info->online) return 0; if (!(info->mcr & UART_MCR_RTS)) return 0; len = skb->len #ifdef CONFIG_ISDN_AUDIO + ISDN_AUDIO_SKB_DLECOUNT(skb) #endif ; c = tty_buffer_request_room(port, len); if (c < len) return 0; #ifdef CONFIG_ISDN_AUDIO if (ISDN_AUDIO_SKB_DLECOUNT(skb)) { int l = skb->len; unsigned char *dp = skb->data; while (--l) { if (*dp == DLE) tty_insert_flip_char(port, DLE, 0); tty_insert_flip_char(port, *dp++, 0); } if (*dp == DLE) tty_insert_flip_char(port, DLE, 0); last = *dp; } else { #endif if (len > 1) tty_insert_flip_string(port, skb->data, len - 1); last = skb->data[len - 1]; #ifdef CONFIG_ISDN_AUDIO } #endif if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP) tty_insert_flip_char(port, last, 0xFF); else tty_insert_flip_char(port, last, TTY_NORMAL); tty_flip_buffer_push(port); kfree_skb(skb); return 1; } /* isdn_tty_readmodem() is called periodically from within timer-interrupt. * It tries getting received data from the receive queue an stuff it into * the tty's flip-buffer. */ void isdn_tty_readmodem(void) { int resched = 0; int midx; int i; int r; modem_info *info; for (i = 0; i < ISDN_MAX_CHANNELS; i++) { midx = dev->m_idx[i]; if (midx < 0) continue; info = &dev->mdm.info[midx]; if (!info->online) continue; r = 0; #ifdef CONFIG_ISDN_AUDIO isdn_audio_eval_dtmf(info); if ((info->vonline & 1) && (info->emu.vpar[1])) isdn_audio_eval_silence(info); #endif if (info->mcr & UART_MCR_RTS) { /* CISCO AsyncPPP Hack */ if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP)) r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, &info->port, 0); else r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, &info->port, 1); if (r) tty_flip_buffer_push(&info->port); } else r = 1; if (r) { info->rcvsched = 0; resched = 1; } else info->rcvsched = 1; } if (!resched) isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0); } int isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb) { ulong flags; int midx; #ifdef CONFIG_ISDN_AUDIO int ifmt; #endif modem_info *info; if ((midx = dev->m_idx[i]) < 0) { /* if midx is invalid, packet is not for tty */ return 0; } info = &dev->mdm.info[midx]; #ifdef CONFIG_ISDN_AUDIO ifmt = 1; if ((info->vonline) && (!info->emu.vpar[4])) isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt); if ((info->vonline & 1) && (info->emu.vpar[1])) isdn_audio_calc_silence(info, skb->data, skb->len, ifmt); #endif if ((info->online < 2) #ifdef CONFIG_ISDN_AUDIO && (!(info->vonline & 1)) #endif ) { /* If Modem not listening, drop data */ kfree_skb(skb); return 1; } if (info->emu.mdmreg[REG_T70] & BIT_T70) { if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) { /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */ if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */ skb_pull(skb, 4); else if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */ skb_pull(skb, 2); } else /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */ if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1))) skb_pull(skb, 4); } #ifdef CONFIG_ISDN_AUDIO ISDN_AUDIO_SKB_DLECOUNT(skb) = 0; ISDN_AUDIO_SKB_LOCK(skb) = 0; if (info->vonline & 1) { /* voice conversion/compression */ switch (info->emu.vpar[3]) { case 2: case 3: case 4: /* adpcm * Since compressed data takes less * space, we can overwrite the buffer. */ skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr, ifmt, skb->data, skb->data, skb->len)); break; case 5: /* a-law */ if (!ifmt) isdn_audio_ulaw2alaw(skb->data, skb->len); break; case 6: /* u-law */ if (ifmt) isdn_audio_alaw2ulaw(skb->data, skb->len); break; } ISDN_AUDIO_SKB_DLECOUNT(skb) = isdn_tty_countDLE(skb->data, skb->len); } #ifdef CONFIG_ISDN_TTY_FAX else { if (info->faxonline & 2) { isdn_tty_fax_bitorder(info, skb); ISDN_AUDIO_SKB_DLECOUNT(skb) = isdn_tty_countDLE(skb->data, skb->len); } } #endif #endif /* Try to deliver directly via tty-buf if queue is empty */ spin_lock_irqsave(&info->readlock, flags); if (skb_queue_empty(&dev->drv[di]->rpqueue[channel])) if (isdn_tty_try_read(info, skb)) { spin_unlock_irqrestore(&info->readlock, flags); return 1; } /* Direct deliver failed or queue wasn't empty. * Queue up for later dequeueing via timer-irq. */ __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb); dev->drv[di]->rcvcount[channel] += (skb->len #ifdef CONFIG_ISDN_AUDIO + ISDN_AUDIO_SKB_DLECOUNT(skb) #endif ); spin_unlock_irqrestore(&info->readlock, flags); /* Schedule dequeuing */ if ((dev->modempoll) && (info->rcvsched)) isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1); return 1; } static void isdn_tty_cleanup_xmit(modem_info *info) { skb_queue_purge(&info->xmit_queue); #ifdef CONFIG_ISDN_AUDIO skb_queue_purge(&info->dtmf_queue); #endif } static void isdn_tty_tint(modem_info *info) { struct sk_buff *skb = skb_dequeue(&info->xmit_queue); int len, slen; if (!skb) return; len = skb->len; if ((slen = isdn_writebuf_skb_stub(info->isdn_driver, info->isdn_channel, 1, skb)) == len) { struct tty_struct *tty = info->port.tty; info->send_outstanding++; info->msr &= ~UART_MSR_CTS; info->lsr &= ~UART_LSR_TEMT; tty_wakeup(tty); return; } if (slen < 0) { /* Error: no channel, already shutdown, or wrong parameter */ dev_kfree_skb(skb); return; } skb_queue_head(&info->xmit_queue, skb); } #ifdef CONFIG_ISDN_AUDIO static int isdn_tty_countDLE(unsigned char *buf, int len) { int count = 0; while (len--) if (*buf++ == DLE) count++; return count; } /* This routine is called from within isdn_tty_write() to perform * DLE-decoding when sending audio-data. */ static int isdn_tty_handleDLEdown(modem_info *info, atemu *m, int len) { unsigned char *p = &info->port.xmit_buf[info->xmit_count]; int count = 0; while (len > 0) { if (m->lastDLE) { m->lastDLE = 0; switch (*p) { case DLE: /* Escape code */ if (len > 1) memmove(p, p + 1, len - 1); p--; count++; break; case ETX: /* End of data */ info->vonline |= 4; return count; case DC4: /* Abort RX */ info->vonline &= ~1; #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n", info->line); #endif isdn_tty_at_cout("\020\003", info); if (!info->vonline) { #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "DLEdown: send VCON on ttyI%d\n", info->line); #endif isdn_tty_at_cout("\r\nVCON\r\n", info); } /* Fall through */ case 'q': case 's': /* Silence */ if (len > 1) memmove(p, p + 1, len - 1); p--; break; } } else { if (*p == DLE) m->lastDLE = 1; else count++; } p++; len--; } if (len < 0) { printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n"); return 0; } return count; } /* This routine is called from within isdn_tty_write() when receiving * audio-data. It interrupts receiving, if an character other than * ^S or ^Q is sent. */ static int isdn_tty_end_vrx(const char *buf, int c) { char ch; while (c--) { ch = *buf; if ((ch != 0x11) && (ch != 0x13)) return 1; buf++; } return 0; } static int voice_cf[7] = {0, 0, 4, 3, 2, 0, 0}; #endif /* CONFIG_ISDN_AUDIO */ /* isdn_tty_senddown() is called either directly from within isdn_tty_write() * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls * outgoing data from the tty's xmit-buffer, handles voice-decompression or * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint. */ static void isdn_tty_senddown(modem_info *info) { int buflen; int skb_res; #ifdef CONFIG_ISDN_AUDIO int audio_len; #endif struct sk_buff *skb; #ifdef CONFIG_ISDN_AUDIO if (info->vonline & 4) { info->vonline &= ~6; if (!info->vonline) { #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "senddown: send VCON on ttyI%d\n", info->line); #endif isdn_tty_at_cout("\r\nVCON\r\n", info); } } #endif if (!(buflen = info->xmit_count)) return; if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0) info->msr &= ~UART_MSR_CTS; info->lsr &= ~UART_LSR_TEMT; /* info->xmit_count is modified here and in isdn_tty_write(). * So we return here if isdn_tty_write() is in the * critical section. */ atomic_inc(&info->xmit_lock); if (!(atomic_dec_and_test(&info->xmit_lock))) return; if (info->isdn_driver < 0) { info->xmit_count = 0; return; } skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4; #ifdef CONFIG_ISDN_AUDIO if (info->vonline & 2) audio_len = buflen * voice_cf[info->emu.vpar[3]]; else audio_len = 0; skb = dev_alloc_skb(skb_res + buflen + audio_len); #else skb = dev_alloc_skb(skb_res + buflen); #endif if (!skb) { printk(KERN_WARNING "isdn_tty: Out of memory in ttyI%d senddown\n", info->line); return; } skb_reserve(skb, skb_res); skb_put_data(skb, info->port.xmit_buf, buflen); info->xmit_count = 0; #ifdef CONFIG_ISDN_AUDIO if (info->vonline & 2) { /* For now, ifmt is fixed to 1 (alaw), since this * is used with ISDN everywhere in the world, except * US, Canada and Japan. * Later, when US-ISDN protocols are implemented, * this setting will depend on the D-channel protocol. */ int ifmt = 1; /* voice conversion/decompression */ switch (info->emu.vpar[3]) { case 2: case 3: case 4: /* adpcm, compatible to ZyXel 1496 modem * with ROM revision 6.01 */ audio_len = isdn_audio_adpcm2xlaw(info->adpcms, ifmt, skb->data, skb_put(skb, audio_len), buflen); skb_pull(skb, buflen); skb_trim(skb, audio_len); break; case 5: /* a-law */ if (!ifmt) isdn_audio_alaw2ulaw(skb->data, buflen); break; case 6: /* u-law */ if (ifmt) isdn_audio_ulaw2alaw(skb->data, buflen); break; } } #endif /* CONFIG_ISDN_AUDIO */ if (info->emu.mdmreg[REG_T70] & BIT_T70) { /* Add T.70 simplified header */ if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) memcpy(skb_push(skb, 2), "\1\0", 2); else memcpy(skb_push(skb, 4), "\1\0\1\0", 4); } skb_queue_tail(&info->xmit_queue, skb); } /************************************************************ * * Modem-functions * * mostly "stolen" from original Linux-serial.c and friends. * ************************************************************/ /* The next routine is called once from within timer-interrupt * triggered within isdn_tty_modem_ncarrier(). It calls * isdn_tty_modem_result() to stuff a "NO CARRIER" Message * into the tty's buffer. */ static void isdn_tty_modem_do_ncarrier(struct timer_list *t) { modem_info *info = from_timer(info, t, nc_timer); isdn_tty_modem_result(RESULT_NO_CARRIER, info); } /* Next routine is called, whenever the DTR-signal is raised. * It checks the ncarrier-flag, and triggers the above routine * when necessary. The ncarrier-flag is set, whenever DTR goes * low. */ static void isdn_tty_modem_ncarrier(modem_info *info) { if (info->ncarrier) { info->nc_timer.expires = jiffies + HZ; add_timer(&info->nc_timer); } } /* * return the usage calculated by si and layer 2 protocol */ static int isdn_calc_usage(int si, int l2) { int usg = ISDN_USAGE_MODEM; #ifdef CONFIG_ISDN_AUDIO if (si == 1) { switch (l2) { case ISDN_PROTO_L2_MODEM: usg = ISDN_USAGE_MODEM; break; #ifdef CONFIG_ISDN_TTY_FAX case ISDN_PROTO_L2_FAX: usg = ISDN_USAGE_FAX; break; #endif case ISDN_PROTO_L2_TRANS: default: usg = ISDN_USAGE_VOICE; break; } } #endif return (usg); } /* isdn_tty_dial() performs dialing of a tty an the necessary * setup of the lower levels before that. */ static void isdn_tty_dial(char *n, modem_info *info, atemu *m) { int usg = ISDN_USAGE_MODEM; int si = 7; int l2 = m->mdmreg[REG_L2PROT]; u_long flags; isdn_ctrl cmd; int i; int j; for (j = 7; j >= 0; j--) if (m->mdmreg[REG_SI1] & (1 << j)) { si = bit2si[j]; break; } usg = isdn_calc_usage(si, l2); #ifdef CONFIG_ISDN_AUDIO if ((si == 1) && (l2 != ISDN_PROTO_L2_MODEM) #ifdef CONFIG_ISDN_TTY_FAX && (l2 != ISDN_PROTO_L2_FAX) #endif ) { l2 = ISDN_PROTO_L2_TRANS; usg = ISDN_USAGE_VOICE; } #endif m->mdmreg[REG_SI1I] = si2bit[si]; spin_lock_irqsave(&dev->lock, flags); i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn); if (i < 0) { spin_unlock_irqrestore(&dev->lock, flags); isdn_tty_modem_result(RESULT_NO_DIALTONE, info); } else { info->isdn_driver = dev->drvmap[i]; info->isdn_channel = dev->chanmap[i]; info->drv_index = i; dev->m_idx[i] = info->line; dev->usage[i] |= ISDN_USAGE_OUTGOING; info->last_dir = 1; strcpy(info->last_num, n); isdn_info_update(); spin_unlock_irqrestore(&dev->lock, flags); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; cmd.command = ISDN_CMD_CLREAZ; isdn_command(&cmd); strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver)); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETEAZ; isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL2; info->last_l2 = l2; cmd.arg = info->isdn_channel + (l2 << 8); isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL3; cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); #ifdef CONFIG_ISDN_TTY_FAX if (l2 == ISDN_PROTO_L2_FAX) { cmd.parm.fax = info->fax; info->fax->direction = ISDN_TTY_FAX_CONN_OUT; } #endif isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; sprintf(cmd.parm.setup.phone, "%s", n); sprintf(cmd.parm.setup.eazmsn, "%s", isdn_map_eaz2msn(m->msn, info->isdn_driver)); cmd.parm.setup.si1 = si; cmd.parm.setup.si2 = m->mdmreg[REG_SI2]; cmd.command = ISDN_CMD_DIAL; info->dialing = 1; info->emu.carrierwait = 0; strcpy(dev->num[i], n); isdn_info_update(); isdn_command(&cmd); isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1); } } /* isdn_tty_hangup() disassociates a tty from the real * ISDN-line (hangup). The usage-status is cleared * and some cleanup is done also. */ void isdn_tty_modem_hup(modem_info *info, int local) { isdn_ctrl cmd; int di, ch; if (!info) return; di = info->isdn_driver; ch = info->isdn_channel; if (di < 0 || ch < 0) return; info->isdn_driver = -1; info->isdn_channel = -1; #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup ttyI%d\n", info->line); #endif info->rcvsched = 0; isdn_tty_flush_buffer(info->port.tty); if (info->online) { info->last_lhup = local; info->online = 0; isdn_tty_modem_result(RESULT_NO_CARRIER, info); } #ifdef CONFIG_ISDN_AUDIO info->vonline = 0; #ifdef CONFIG_ISDN_TTY_FAX info->faxonline = 0; info->fax->phase = ISDN_FAX_PHASE_IDLE; #endif info->emu.vpar[4] = 0; info->emu.vpar[5] = 8; kfree(info->dtmf_state); info->dtmf_state = NULL; kfree(info->silence_state); info->silence_state = NULL; kfree(info->adpcms); info->adpcms = NULL; kfree(info->adpcmr); info->adpcmr = NULL; #endif if ((info->msr & UART_MSR_RI) && (info->emu.mdmreg[REG_RUNG] & BIT_RUNG)) isdn_tty_modem_result(RESULT_RUNG, info); info->msr &= ~(UART_MSR_DCD | UART_MSR_RI); info->lsr |= UART_LSR_TEMT; if (local) { cmd.driver = di; cmd.command = ISDN_CMD_HANGUP; cmd.arg = ch; isdn_command(&cmd); } isdn_all_eaz(di, ch); info->emu.mdmreg[REG_RINGCNT] = 0; isdn_free_channel(di, ch, 0); if (info->drv_index >= 0) { dev->m_idx[info->drv_index] = -1; info->drv_index = -1; } } /* * Begin of a CAPI like interface, currently used only for * supplementary service (CAPI 2.0 part III) */ #include <linux/isdn/capicmd.h> #include <linux/module.h> int isdn_tty_capi_facility(capi_msg *cm) { return (-1); /* dummy */ } /* isdn_tty_suspend() tries to suspend the current tty connection */ static void isdn_tty_suspend(char *id, modem_info *info, atemu *m) { isdn_ctrl cmd; int l; if (!info) return; #ifdef ISDN_DEBUG_MODEM_SERVICES printk(KERN_DEBUG "Msusp ttyI%d\n", info->line); #endif l = strlen(id); if ((info->isdn_driver >= 0)) { cmd.parm.cmsg.Length = l + 18; cmd.parm.cmsg.Command = CAPI_FACILITY; cmd.parm.cmsg.Subcommand = CAPI_REQ; cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1; cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */ cmd.parm.cmsg.para[1] = 0; cmd.parm.cmsg.para[2] = l + 3; cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */ cmd.parm.cmsg.para[4] = 0; cmd.parm.cmsg.para[5] = l; memcpy(&cmd.parm.cmsg.para[6], id, l); cmd.command = CAPI_PUT_MESSAGE; cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; isdn_command(&cmd); } } /* isdn_tty_resume() tries to resume a suspended call * setup of the lower levels before that. unfortunately here is no * checking for compatibility of used protocols implemented by Q931 * It does the same things like isdn_tty_dial, the last command * is different, may be we can merge it. */ static void isdn_tty_resume(char *id, modem_info *info, atemu *m) { int usg = ISDN_USAGE_MODEM; int si = 7; int l2 = m->mdmreg[REG_L2PROT]; isdn_ctrl cmd; ulong flags; int i; int j; int l; l = strlen(id); for (j = 7; j >= 0; j--) if (m->mdmreg[REG_SI1] & (1 << j)) { si = bit2si[j]; break; } usg = isdn_calc_usage(si, l2); #ifdef CONFIG_ISDN_AUDIO if ((si == 1) && (l2 != ISDN_PROTO_L2_MODEM) #ifdef CONFIG_ISDN_TTY_FAX && (l2 != ISDN_PROTO_L2_FAX) #endif ) { l2 = ISDN_PROTO_L2_TRANS; usg = ISDN_USAGE_VOICE; } #endif m->mdmreg[REG_SI1I] = si2bit[si]; spin_lock_irqsave(&dev->lock, flags); i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn); if (i < 0) { spin_unlock_irqrestore(&dev->lock, flags); isdn_tty_modem_result(RESULT_NO_DIALTONE, info); } else { info->isdn_driver = dev->drvmap[i]; info->isdn_channel = dev->chanmap[i]; info->drv_index = i; dev->m_idx[i] = info->line; dev->usage[i] |= ISDN_USAGE_OUTGOING; info->last_dir = 1; // strcpy(info->last_num, n); isdn_info_update(); spin_unlock_irqrestore(&dev->lock, flags); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; cmd.command = ISDN_CMD_CLREAZ; isdn_command(&cmd); strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver)); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETEAZ; isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL2; info->last_l2 = l2; cmd.arg = info->isdn_channel + (l2 << 8); isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL3; cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; cmd.parm.cmsg.Length = l + 18; cmd.parm.cmsg.Command = CAPI_FACILITY; cmd.parm.cmsg.Subcommand = CAPI_REQ; cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1; cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */ cmd.parm.cmsg.para[1] = 0; cmd.parm.cmsg.para[2] = l + 3; cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */ cmd.parm.cmsg.para[4] = 0; cmd.parm.cmsg.para[5] = l; memcpy(&cmd.parm.cmsg.para[6], id, l); cmd.command = CAPI_PUT_MESSAGE; info->dialing = 1; // strcpy(dev->num[i], n); isdn_info_update(); isdn_command(&cmd); isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1); } } /* isdn_tty_send_msg() sends a message to a HL driver * This is used for hybrid modem cards to send AT commands to it */ static void isdn_tty_send_msg(modem_info *info, atemu *m, char *msg) { int usg = ISDN_USAGE_MODEM; int si = 7; int l2 = m->mdmreg[REG_L2PROT]; isdn_ctrl cmd; ulong flags; int i; int j; int l; l = min(strlen(msg), sizeof(cmd.parm) - sizeof(cmd.parm.cmsg) + sizeof(cmd.parm.cmsg.para) - 2); if (!l) { isdn_tty_modem_result(RESULT_ERROR, info); return; } for (j = 7; j >= 0; j--) if (m->mdmreg[REG_SI1] & (1 << j)) { si = bit2si[j]; break; } usg = isdn_calc_usage(si, l2); #ifdef CONFIG_ISDN_AUDIO if ((si == 1) && (l2 != ISDN_PROTO_L2_MODEM) #ifdef CONFIG_ISDN_TTY_FAX && (l2 != ISDN_PROTO_L2_FAX) #endif ) { l2 = ISDN_PROTO_L2_TRANS; usg = ISDN_USAGE_VOICE; } #endif m->mdmreg[REG_SI1I] = si2bit[si]; spin_lock_irqsave(&dev->lock, flags); i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn); if (i < 0) { spin_unlock_irqrestore(&dev->lock, flags); isdn_tty_modem_result(RESULT_NO_DIALTONE, info); } else { info->isdn_driver = dev->drvmap[i]; info->isdn_channel = dev->chanmap[i]; info->drv_index = i; dev->m_idx[i] = info->line; dev->usage[i] |= ISDN_USAGE_OUTGOING; info->last_dir = 1; isdn_info_update(); spin_unlock_irqrestore(&dev->lock, flags); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; cmd.command = ISDN_CMD_CLREAZ; isdn_command(&cmd); strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver)); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETEAZ; isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL2; info->last_l2 = l2; cmd.arg = info->isdn_channel + (l2 << 8); isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL3; cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; cmd.parm.cmsg.Length = l + 14; cmd.parm.cmsg.Command = CAPI_MANUFACTURER; cmd.parm.cmsg.Subcommand = CAPI_REQ; cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1; cmd.parm.cmsg.para[0] = l + 1; strncpy(&cmd.parm.cmsg.para[1], msg, l); cmd.parm.cmsg.para[l + 1] = 0xd; cmd.command = CAPI_PUT_MESSAGE; /* info->dialing = 1; strcpy(dev->num[i], n); isdn_info_update(); */ isdn_command(&cmd); } } static inline int isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine) { #ifdef MODEM_PARANOIA_CHECK if (!info) { printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n", name, routine); return 1; } if (info->magic != ISDN_ASYNC_MAGIC) { printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n", name, routine); return 1; } #endif return 0; } /* * This routine is called to set the UART divisor registers to match * the specified baud rate for a serial port. */ static void isdn_tty_change_speed(modem_info *info) { struct tty_port *port = &info->port; uint cflag, cval, quot; int i; if (!port->tty) return; cflag = port->tty->termios.c_cflag; quot = i = cflag & CBAUD; if (i & CBAUDEX) { i &= ~CBAUDEX; if (i < 1 || i > 2) port->tty->termios.c_cflag &= ~CBAUDEX; else i += 15; } if (quot) { info->mcr |= UART_MCR_DTR; isdn_tty_modem_ncarrier(info); } else { info->mcr &= ~UART_MCR_DTR; if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) { #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in changespeed\n"); #endif if (info->online) info->ncarrier = 1; isdn_tty_modem_reset_regs(info, 0); isdn_tty_modem_hup(info, 1); } return; } /* byte size and parity */ cval = cflag & (CSIZE | CSTOPB); cval >>= 4; if (cflag & PARENB) cval |= UART_LCR_PARITY; if (!(cflag & PARODD)) cval |= UART_LCR_EPAR; tty_port_set_check_carrier(port, ~cflag & CLOCAL); } static int isdn_tty_startup(modem_info *info) { if (tty_port_initialized(&info->port)) return 0; isdn_lock_drivers(); #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line); #endif /* * Now, initialize the UART */ info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2; if (info->port.tty) clear_bit(TTY_IO_ERROR, &info->port.tty->flags); /* * and set the speed of the serial port */ isdn_tty_change_speed(info); tty_port_set_initialized(&info->port, 1); info->msr |= (UART_MSR_DSR | UART_MSR_CTS); info->send_outstanding = 0; return 0; } /* * This routine will shutdown a serial port; interrupts are disabled, and * DTR is dropped if the hangup on close termio flag is on. */ static void isdn_tty_shutdown(modem_info *info) { if (!tty_port_initialized(&info->port)) return; #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line); #endif isdn_unlock_drivers(); info->msr &= ~UART_MSR_RI; if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) { info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS); if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) { isdn_tty_modem_reset_regs(info, 0); #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n"); #endif isdn_tty_modem_hup(info, 1); } } if (info->port.tty) set_bit(TTY_IO_ERROR, &info->port.tty->flags); tty_port_set_initialized(&info->port, 0); } /* isdn_tty_write() is the main send-routine. It is called from the upper * levels within the kernel to perform sending data. Depending on the * online-flag it either directs output to the at-command-interpreter or * to the lower level. Additional tasks done here: * - If online, check for escape-sequence (+++) * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes. * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed. * - If dialing, abort dial. */ static int isdn_tty_write(struct tty_struct *tty, const u_char *buf, int count) { int c; int total = 0; modem_info *info = (modem_info *) tty->driver_data; atemu *m = &info->emu; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write")) return 0; /* See isdn_tty_senddown() */ atomic_inc(&info->xmit_lock); while (1) { c = count; if (c > info->xmit_size - info->xmit_count) c = info->xmit_size - info->xmit_count; if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize) c = dev->drv[info->isdn_driver]->maxbufsize; if (c <= 0) break; if ((info->online > 1) #ifdef CONFIG_ISDN_AUDIO || (info->vonline & 3) #endif ) { #ifdef CONFIG_ISDN_AUDIO if (!info->vonline) #endif isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c, &(m->pluscount), &(m->lastplus)); memcpy(&info->port.xmit_buf[info->xmit_count], buf, c); #ifdef CONFIG_ISDN_AUDIO if (info->vonline) { int cc = isdn_tty_handleDLEdown(info, m, c); if (info->vonline & 2) { if (!cc) { /* If DLE decoding results in zero-transmit, but * c originally was non-zero, do a wakeup. */ tty_wakeup(tty); info->msr |= UART_MSR_CTS; info->lsr |= UART_LSR_TEMT; } info->xmit_count += cc; } if ((info->vonline & 3) == 1) { /* Do NOT handle Ctrl-Q or Ctrl-S * when in full-duplex audio mode. */ if (isdn_tty_end_vrx(buf, c)) { info->vonline &= ~1; #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n", info->line); #endif isdn_tty_at_cout("\020\003\r\nVCON\r\n", info); } } } else if (TTY_IS_FCLASS1(info)) { int cc = isdn_tty_handleDLEdown(info, m, c); if (info->vonline & 4) { /* ETX seen */ isdn_ctrl c; c.command = ISDN_CMD_FAXCMD; c.driver = info->isdn_driver; c.arg = info->isdn_channel; c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL; c.parm.aux.subcmd = ETX; isdn_command(&c); } info->vonline = 0; #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c); #endif info->xmit_count += cc; } else #endif info->xmit_count += c; } else { info->msr |= UART_MSR_CTS; info->lsr |= UART_LSR_TEMT; if (info->dialing) { info->dialing = 0; #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in isdn_tty_write\n"); #endif isdn_tty_modem_result(RESULT_NO_CARRIER, info); isdn_tty_modem_hup(info, 1); } else c = isdn_tty_edit_at(buf, c, info); } buf += c; count -= c; total += c; } atomic_dec(&info->xmit_lock); if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) { if (m->mdmreg[REG_DXMT] & BIT_DXMT) { isdn_tty_senddown(info); isdn_tty_tint(info); } isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1); } return total; } static int isdn_tty_write_room(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; int ret; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room")) return 0; if (!info->online) return info->xmit_size; ret = info->xmit_size - info->xmit_count; return (ret < 0) ? 0 : ret; } static int isdn_tty_chars_in_buffer(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer")) return 0; if (!info->online) return 0; return (info->xmit_count); } static void isdn_tty_flush_buffer(struct tty_struct *tty) { modem_info *info; if (!tty) { return; } info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) { return; } isdn_tty_cleanup_xmit(info); info->xmit_count = 0; tty_wakeup(tty); } static void isdn_tty_flush_chars(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars")) return; if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1); } /* * ------------------------------------------------------------ * isdn_tty_throttle() * * This routine is called by the upper-layer tty layer to signal that * incoming characters should be throttled. * ------------------------------------------------------------ */ static void isdn_tty_throttle(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle")) return; if (I_IXOFF(tty)) info->x_char = STOP_CHAR(tty); info->mcr &= ~UART_MCR_RTS; } static void isdn_tty_unthrottle(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle")) return; if (I_IXOFF(tty)) { if (info->x_char) info->x_char = 0; else info->x_char = START_CHAR(tty); } info->mcr |= UART_MCR_RTS; } /* * ------------------------------------------------------------ * isdn_tty_ioctl() and friends * ------------------------------------------------------------ */ /* * isdn_tty_get_lsr_info - get line status register info * * Purpose: Let user call ioctl() to get info when the UART physically * is emptied. On bus types like RS485, the transmitter must * release the bus after transmitting. This must be done when * the transmit shift register is empty, not be done when the * transmit holding register is empty. This functionality * allows RS485 driver to be written in user space. */ static int isdn_tty_get_lsr_info(modem_info *info, uint __user *value) { u_char status; uint result; status = info->lsr; result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); return put_user(result, value); } static int isdn_tty_tiocmget(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; u_char control, status; if (isdn_tty_paranoia_check(info, tty->name, __func__)) return -ENODEV; if (tty_io_error(tty)) return -EIO; mutex_lock(&modem_info_mutex); #ifdef ISDN_DEBUG_MODEM_IOCTL printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line); #endif control = info->mcr; status = info->msr; mutex_unlock(&modem_info_mutex); return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); } static int isdn_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { modem_info *info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, __func__)) return -ENODEV; if (tty_io_error(tty)) return -EIO; #ifdef ISDN_DEBUG_MODEM_IOCTL printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear); #endif mutex_lock(&modem_info_mutex); if (set & TIOCM_RTS) info->mcr |= UART_MCR_RTS; if (set & TIOCM_DTR) { info->mcr |= UART_MCR_DTR; isdn_tty_modem_ncarrier(info); } if (clear & TIOCM_RTS) info->mcr &= ~UART_MCR_RTS; if (clear & TIOCM_DTR) { info->mcr &= ~UART_MCR_DTR; if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) { isdn_tty_modem_reset_regs(info, 0); #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in TIOCMSET\n"); #endif if (info->online) info->ncarrier = 1; isdn_tty_modem_hup(info, 1); } } mutex_unlock(&modem_info_mutex); return 0; } static int isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg) { modem_info *info = (modem_info *) tty->driver_data; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl")) return -ENODEV; if (tty_io_error(tty)) return -EIO; switch (cmd) { case TIOCSERGETLSR: /* Get line status register */ #ifdef ISDN_DEBUG_MODEM_IOCTL printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line); #endif return isdn_tty_get_lsr_info(info, (uint __user *) arg); default: #ifdef ISDN_DEBUG_MODEM_IOCTL printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line); #endif return -ENOIOCTLCMD; } return 0; } static void isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { modem_info *info = (modem_info *) tty->driver_data; mutex_lock(&modem_info_mutex); if (!old_termios) isdn_tty_change_speed(info); else { if (tty->termios.c_cflag == old_termios->c_cflag && tty->termios.c_ispeed == old_termios->c_ispeed && tty->termios.c_ospeed == old_termios->c_ospeed) { mutex_unlock(&modem_info_mutex); return; } isdn_tty_change_speed(info); } mutex_unlock(&modem_info_mutex); } /* * ------------------------------------------------------------ * isdn_tty_open() and friends * ------------------------------------------------------------ */ static int isdn_tty_install(struct tty_driver *driver, struct tty_struct *tty) { modem_info *info = &dev->mdm.info[tty->index]; if (isdn_tty_paranoia_check(info, tty->name, __func__)) return -ENODEV; tty->driver_data = info; return tty_port_install(&info->port, driver, tty); } /* * This routine is called whenever a serial port is opened. It * enables interrupts for a serial port, linking in its async structure into * the IRQ chain. It also performs the serial-specific * initialization for the tty structure. */ static int isdn_tty_open(struct tty_struct *tty, struct file *filp) { modem_info *info = tty->driver_data; struct tty_port *port = &info->port; int retval; #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name, port->count); #endif port->count++; port->tty = tty; /* * Start up serial port */ retval = isdn_tty_startup(info); if (retval) { #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_open return after startup\n"); #endif return retval; } retval = tty_port_block_til_ready(port, tty, filp); if (retval) { #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n"); #endif return retval; } #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line); #endif dev->modempoll++; #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_open normal exit\n"); #endif return 0; } static void isdn_tty_close(struct tty_struct *tty, struct file *filp) { modem_info *info = (modem_info *) tty->driver_data; struct tty_port *port = &info->port; ulong timeout; if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close")) return; if (tty_hung_up_p(filp)) { #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n"); #endif return; } if ((tty->count == 1) && (port->count != 1)) { /* * Uh, oh. tty->count is 1, which means that the tty * structure will be freed. Info->count should always * be one in these conditions. If it's greater than * one, we've got real problems, since it means the * serial port won't be shutdown. */ printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, " "info->count is %d\n", port->count); port->count = 1; } if (--port->count < 0) { printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n", info->line, port->count); port->count = 0; } if (port->count) { #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n"); #endif return; } info->closing = 1; tty->closing = 1; /* * At this point we stop accepting input. To do this, we * disable the receive line status interrupts, and tell the * interrupt driver to stop checking the data ready bit in the * line status register. */ if (tty_port_initialized(port)) { tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ /* * Before we drop DTR, make sure the UART transmitter * has completely drained; this is especially * important if there is a transmit FIFO! */ timeout = jiffies + HZ; while (!(info->lsr & UART_LSR_TEMT)) { schedule_timeout_interruptible(20); if (time_after(jiffies, timeout)) break; } } dev->modempoll--; isdn_tty_shutdown(info); isdn_tty_flush_buffer(tty); tty_ldisc_flush(tty); port->tty = NULL; info->ncarrier = 0; tty_port_close_end(port, tty); info->closing = 0; #ifdef ISDN_DEBUG_MODEM_OPEN printk(KERN_DEBUG "isdn_tty_close normal exit\n"); #endif } /* * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled. */ static void isdn_tty_hangup(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; struct tty_port *port = &info->port; if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup")) return; isdn_tty_shutdown(info); port->count = 0; tty_port_set_active(port, 0); port->tty = NULL; wake_up_interruptible(&port->open_wait); } /* This routine initializes all emulator-data. */ static void isdn_tty_reset_profile(atemu *m) { m->profile[0] = 0; m->profile[1] = 0; m->profile[2] = 43; m->profile[3] = 13; m->profile[4] = 10; m->profile[5] = 8; m->profile[6] = 3; m->profile[7] = 60; m->profile[8] = 2; m->profile[9] = 6; m->profile[10] = 7; m->profile[11] = 70; m->profile[12] = 0x45; m->profile[13] = 4; m->profile[14] = ISDN_PROTO_L2_X75I; m->profile[15] = ISDN_PROTO_L3_TRANS; m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16; m->profile[17] = ISDN_MODEM_WINSIZE; m->profile[18] = 4; m->profile[19] = 0; m->profile[20] = 0; m->profile[23] = 0; m->pmsn[0] = '\0'; m->plmsn[0] = '\0'; } #ifdef CONFIG_ISDN_AUDIO static void isdn_tty_modem_reset_vpar(atemu *m) { m->vpar[0] = 2; /* Voice-device (2 = phone line) */ m->vpar[1] = 0; /* Silence detection level (0 = none ) */ m->vpar[2] = 70; /* Silence interval (7 sec. ) */ m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */ m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */ m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */ } #endif #ifdef CONFIG_ISDN_TTY_FAX static void isdn_tty_modem_reset_faxpar(modem_info *info) { T30_s *f = info->fax; f->code = 0; f->phase = ISDN_FAX_PHASE_IDLE; f->direction = 0; f->resolution = 1; /* fine */ f->rate = 5; /* 14400 bit/s */ f->width = 0; f->length = 0; f->compression = 0; f->ecm = 0; f->binary = 0; f->scantime = 0; memset(&f->id[0], 32, FAXIDLEN - 1); f->id[FAXIDLEN - 1] = 0; f->badlin = 0; f->badmul = 0; f->bor = 0; f->nbc = 0; f->cq = 0; f->cr = 0; f->ctcrty = 0; f->minsp = 0; f->phcto = 30; f->rel = 0; memset(&f->pollid[0], 32, FAXIDLEN - 1); f->pollid[FAXIDLEN - 1] = 0; } #endif static void isdn_tty_modem_reset_regs(modem_info *info, int force) { atemu *m = &info->emu; if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) { memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG); memcpy(m->msn, m->pmsn, ISDN_MSNLEN); memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN); info->xmit_size = m->mdmreg[REG_PSIZE] * 16; } #ifdef CONFIG_ISDN_AUDIO isdn_tty_modem_reset_vpar(m); #endif #ifdef CONFIG_ISDN_TTY_FAX isdn_tty_modem_reset_faxpar(info); #endif m->mdmcmdl = 0; } static void modem_write_profile(atemu *m) { memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG); memcpy(m->pmsn, m->msn, ISDN_MSNLEN); memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN); if (dev->profd) send_sig(SIGIO, dev->profd, 1); } static const struct tty_operations modem_ops = { .install = isdn_tty_install, .open = isdn_tty_open, .close = isdn_tty_close, .write = isdn_tty_write, .flush_chars = isdn_tty_flush_chars, .write_room = isdn_tty_write_room, .chars_in_buffer = isdn_tty_chars_in_buffer, .flush_buffer = isdn_tty_flush_buffer, .ioctl = isdn_tty_ioctl, .throttle = isdn_tty_throttle, .unthrottle = isdn_tty_unthrottle, .set_termios = isdn_tty_set_termios, .hangup = isdn_tty_hangup, .tiocmget = isdn_tty_tiocmget, .tiocmset = isdn_tty_tiocmset, }; static int isdn_tty_carrier_raised(struct tty_port *port) { modem_info *info = container_of(port, modem_info, port); return info->msr & UART_MSR_DCD; } static const struct tty_port_operations isdn_tty_port_ops = { .carrier_raised = isdn_tty_carrier_raised, }; int isdn_tty_modem_init(void) { isdn_modem_t *m; int i, retval; modem_info *info; m = &dev->mdm; m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS); if (!m->tty_modem) return -ENOMEM; m->tty_modem->name = "ttyI"; m->tty_modem->major = ISDN_TTY_MAJOR; m->tty_modem->minor_start = 0; m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL; m->tty_modem->subtype = SERIAL_TYPE_NORMAL; m->tty_modem->init_termios = tty_std_termios; m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; m->tty_modem->flags = TTY_DRIVER_REAL_RAW; m->tty_modem->driver_name = "isdn_tty"; tty_set_operations(m->tty_modem, &modem_ops); retval = tty_register_driver(m->tty_modem); if (retval) { printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n"); goto err; } for (i = 0; i < ISDN_MAX_CHANNELS; i++) { info = &m->info[i]; #ifdef CONFIG_ISDN_TTY_FAX if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) { printk(KERN_ERR "Could not allocate fax t30-buffer\n"); retval = -ENOMEM; goto err_unregister; } #endif tty_port_init(&info->port); info->port.ops = &isdn_tty_port_ops; spin_lock_init(&info->readlock); sprintf(info->last_cause, "0000"); sprintf(info->last_num, "none"); info->last_dir = 0; info->last_lhup = 1; info->last_l2 = -1; info->last_si = 0; isdn_tty_reset_profile(&info->emu); isdn_tty_modem_reset_regs(info, 1); info->magic = ISDN_ASYNC_MAGIC; info->line = i; info->x_char = 0; info->isdn_driver = -1; info->isdn_channel = -1; info->drv_index = -1; info->xmit_size = ISDN_SERIAL_XMIT_SIZE; timer_setup(&info->nc_timer, isdn_tty_modem_do_ncarrier, 0); skb_queue_head_init(&info->xmit_queue); #ifdef CONFIG_ISDN_AUDIO skb_queue_head_init(&info->dtmf_queue); #endif info->port.xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5, GFP_KERNEL); if (!info->port.xmit_buf) { printk(KERN_ERR "Could not allocate modem xmit-buffer\n"); retval = -ENOMEM; goto err_unregister; } /* Make room for T.70 header */ info->port.xmit_buf += 4; } return 0; err_unregister: for (i--; i >= 0; i--) { info = &m->info[i]; #ifdef CONFIG_ISDN_TTY_FAX kfree(info->fax); #endif kfree(info->port.xmit_buf - 4); info->port.xmit_buf = NULL; tty_port_destroy(&info->port); } tty_unregister_driver(m->tty_modem); err: put_tty_driver(m->tty_modem); m->tty_modem = NULL; return retval; } void isdn_tty_exit(void) { modem_info *info; int i; for (i = 0; i < ISDN_MAX_CHANNELS; i++) { info = &dev->mdm.info[i]; isdn_tty_cleanup_xmit(info); #ifdef CONFIG_ISDN_TTY_FAX kfree(info->fax); #endif kfree(info->port.xmit_buf - 4); info->port.xmit_buf = NULL; tty_port_destroy(&info->port); } tty_unregister_driver(dev->mdm.tty_modem); put_tty_driver(dev->mdm.tty_modem); dev->mdm.tty_modem = NULL; } /* * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx) * match the MSN against the MSNs (glob patterns) defined for tty_emulator, * and return 0 for match, 1 for no match, 2 if MSN could match if longer. */ static int isdn_tty_match_icall(char *cid, atemu *emu, int di) { #ifdef ISDN_DEBUG_MODEM_ICALL printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n", emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di), emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]); #endif if (strlen(emu->lmsn)) { char *p = emu->lmsn; char *q; int tmp; int ret = 0; while (1) { if ((q = strchr(p, ';'))) *q = '\0'; if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret) ret = tmp; #ifdef ISDN_DEBUG_MODEM_ICALL printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n", p, isdn_map_eaz2msn(emu->msn, di), tmp); #endif if (q) { *q = ';'; p = q; p++; } if (!tmp) return 0; if (!q) break; } return ret; } else { int tmp; tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di)); #ifdef ISDN_DEBUG_MODEM_ICALL printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n", isdn_map_eaz2msn(emu->msn, di), tmp); #endif return tmp; } } /* * An incoming call-request has arrived. * Search the tty-devices for an appropriate device and bind * it to the ISDN-Channel. * Return: * * 0 = No matching device found. * 1 = A matching device found. * 3 = No match found, but eventually would match, if * CID is longer. */ int isdn_tty_find_icall(int di, int ch, setup_parm *setup) { char *eaz; int i; int wret; int idx; int si1; int si2; char *nr; ulong flags; if (!setup->phone[0]) { nr = "0"; printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n"); } else nr = setup->phone; si1 = (int) setup->si1; si2 = (int) setup->si2; if (!setup->eazmsn[0]) { printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n"); eaz = "0"; } else eaz = setup->eazmsn; #ifdef ISDN_DEBUG_MODEM_ICALL printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2); #endif wret = 0; spin_lock_irqsave(&dev->lock, flags); for (i = 0; i < ISDN_MAX_CHANNELS; i++) { modem_info *info = &dev->mdm.info[i]; if (info->port.count == 0) continue; if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */ (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */ idx = isdn_dc2minor(di, ch); #ifdef ISDN_DEBUG_MODEM_ICALL printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret); printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx, info->port.flags, info->isdn_driver, info->isdn_channel, dev->usage[idx]); #endif if ( #ifndef FIX_FILE_TRANSFER tty_port_active(&info->port) && #endif (info->isdn_driver == -1) && (info->isdn_channel == -1) && (USG_NONE(dev->usage[idx]))) { int matchret; if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret) wret = matchret; if (!matchret) { /* EAZ is matching */ info->isdn_driver = di; info->isdn_channel = ch; info->drv_index = idx; dev->m_idx[idx] = info->line; dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE; dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]); strcpy(dev->num[idx], nr); strcpy(info->emu.cpn, eaz); info->emu.mdmreg[REG_SI1I] = si2bit[si1]; info->emu.mdmreg[REG_PLAN] = setup->plan; info->emu.mdmreg[REG_SCREEN] = setup->screen; isdn_info_update(); spin_unlock_irqrestore(&dev->lock, flags); printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr, info->line); info->msr |= UART_MSR_RI; isdn_tty_modem_result(RESULT_RING, info); isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1); return 1; } } } } spin_unlock_irqrestore(&dev->lock, flags); printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz, ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2)) ? "rejected" : "ignored"); return (wret == 2) ? 3 : 0; } int isdn_tty_stat_callback(int i, isdn_ctrl *c) { int mi; modem_info *info; char *e; if (i < 0) return 0; if ((mi = dev->m_idx[i]) >= 0) { info = &dev->mdm.info[mi]; switch (c->command) { case ISDN_STAT_CINF: printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num); info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10); if (e == (char *)c->parm.num) info->emu.charge = 0; break; case ISDN_STAT_BSENT: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line); #endif if ((info->isdn_driver == c->driver) && (info->isdn_channel == c->arg)) { info->msr |= UART_MSR_CTS; if (info->send_outstanding) if (!(--info->send_outstanding)) info->lsr |= UART_LSR_TEMT; isdn_tty_tint(info); return 1; } break; case ISDN_STAT_CAUSE: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line); #endif /* Signal cause to tty-device */ strncpy(info->last_cause, c->parm.num, 5); return 1; case ISDN_STAT_DISPLAY: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line); #endif /* Signal display to tty-device */ if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) && !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) { isdn_tty_at_cout("\r\n", info); isdn_tty_at_cout("DISPLAY: ", info); isdn_tty_at_cout(c->parm.display, info); isdn_tty_at_cout("\r\n", info); } return 1; case ISDN_STAT_DCONN: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line); #endif if (tty_port_active(&info->port)) { if (info->dialing == 1) { info->dialing = 2; return 1; } } break; case ISDN_STAT_DHUP: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line); #endif if (tty_port_active(&info->port)) { if (info->dialing == 1) isdn_tty_modem_result(RESULT_BUSY, info); if (info->dialing > 1) isdn_tty_modem_result(RESULT_NO_CARRIER, info); info->dialing = 0; #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n"); #endif isdn_tty_modem_hup(info, 0); return 1; } break; case ISDN_STAT_BCONN: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line); #endif /* Wake up any processes waiting * for incoming call of this device when * DCD follow the state of incoming carrier */ if (info->port.blocked_open && (info->emu.mdmreg[REG_DCD] & BIT_DCD)) { wake_up_interruptible(&info->port.open_wait); } /* Schedule CONNECT-Message to any tty * waiting for it and * set DCD-bit of its modem-status. */ if (tty_port_active(&info->port) || (info->port.blocked_open && (info->emu.mdmreg[REG_DCD] & BIT_DCD))) { info->msr |= UART_MSR_DCD; info->emu.charge = 0; if (info->dialing & 0xf) info->last_dir = 1; else info->last_dir = 0; info->dialing = 0; info->rcvsched = 1; if (USG_MODEM(dev->usage[i])) { if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) { strcpy(info->emu.connmsg, c->parm.num); isdn_tty_modem_result(RESULT_CONNECT, info); } else isdn_tty_modem_result(RESULT_CONNECT64000, info); } if (USG_VOICE(dev->usage[i])) isdn_tty_modem_result(RESULT_VCON, info); return 1; } break; case ISDN_STAT_BHUP: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line); #endif if (tty_port_active(&info->port)) { #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n"); #endif isdn_tty_modem_hup(info, 0); return 1; } break; case ISDN_STAT_NODCH: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line); #endif if (tty_port_active(&info->port)) { if (info->dialing) { info->dialing = 0; info->last_l2 = -1; info->last_si = 0; sprintf(info->last_cause, "0000"); isdn_tty_modem_result(RESULT_NO_DIALTONE, info); } isdn_tty_modem_hup(info, 0); return 1; } break; case ISDN_STAT_UNLOAD: #ifdef ISDN_TTY_STAT_DEBUG printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line); #endif for (i = 0; i < ISDN_MAX_CHANNELS; i++) { info = &dev->mdm.info[i]; if (info->isdn_driver == c->driver) { if (info->online) isdn_tty_modem_hup(info, 1); } } return 1; #ifdef CONFIG_ISDN_TTY_FAX case ISDN_STAT_FAXIND: if (tty_port_active(&info->port)) { isdn_tty_fax_command(info, c); } break; #endif #ifdef CONFIG_ISDN_AUDIO case ISDN_STAT_AUDIO: if (tty_port_active(&info->port)) { switch (c->parm.num[0]) { case ISDN_AUDIO_DTMF: if (info->vonline) { isdn_audio_put_dle_code(info, c->parm.num[1]); } break; } } break; #endif } } return 0; } /********************************************************************* Modem-Emulator-Routines *********************************************************************/ #define cmdchar(c) ((c >= ' ') && (c <= 0x7f)) /* * Put a message from the AT-emulator into receive-buffer of tty, * convert CR, LF, and BS to values in modem-registers 3, 4 and 5. */ void isdn_tty_at_cout(char *msg, modem_info *info) { struct tty_port *port = &info->port; atemu *m = &info->emu; char *p; char c; u_long flags; struct sk_buff *skb = NULL; char *sp = NULL; int l; if (!msg) { printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n"); return; } l = strlen(msg); spin_lock_irqsave(&info->readlock, flags); if (info->closing) { spin_unlock_irqrestore(&info->readlock, flags); return; } /* use queue instead of direct, if online and */ /* data is in queue or buffer is full */ if (info->online && ((tty_buffer_request_room(port, l) < l) || !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) { skb = alloc_skb(l, GFP_ATOMIC); if (!skb) { spin_unlock_irqrestore(&info->readlock, flags); return; } sp = skb_put(skb, l); #ifdef CONFIG_ISDN_AUDIO ISDN_AUDIO_SKB_DLECOUNT(skb) = 0; ISDN_AUDIO_SKB_LOCK(skb) = 0; #endif } for (p = msg; *p; p++) { switch (*p) { case '\r': c = m->mdmreg[REG_CR]; break; case '\n': c = m->mdmreg[REG_LF]; break; case '\b': c = m->mdmreg[REG_BS]; break; default: c = *p; } if (skb) { *sp++ = c; } else { if (tty_insert_flip_char(port, c, TTY_NORMAL) == 0) break; } } if (skb) { __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb); dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len; spin_unlock_irqrestore(&info->readlock, flags); /* Schedule dequeuing */ if (dev->modempoll && info->rcvsched) isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1); } else { spin_unlock_irqrestore(&info->readlock, flags); tty_flip_buffer_push(port); } } /* * Perform ATH Hangup */ static void isdn_tty_on_hook(modem_info *info) { if (info->isdn_channel >= 0) { #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n"); #endif isdn_tty_modem_hup(info, 1); } } static void isdn_tty_off_hook(void) { printk(KERN_DEBUG "isdn_tty_off_hook\n"); } #define PLUSWAIT1 (HZ / 2) /* 0.5 sec. */ #define PLUSWAIT2 (HZ * 3 / 2) /* 1.5 sec */ /* * Check Buffer for Modem-escape-sequence, activate timer-callback to * isdn_tty_modem_escape() if sequence found. * * Parameters: * p pointer to databuffer * plus escape-character * count length of buffer * pluscount count of valid escape-characters so far * lastplus timestamp of last character */ static void isdn_tty_check_esc(const u_char *p, u_char plus, int count, int *pluscount, u_long *lastplus) { if (plus > 127) return; if (count > 3) { p += count - 3; count = 3; *pluscount = 0; } while (count > 0) { if (*(p++) == plus) { if ((*pluscount)++) { /* Time since last '+' > 0.5 sec. ? */ if (time_after(jiffies, *lastplus + PLUSWAIT1)) *pluscount = 1; } else { /* Time since last non-'+' < 1.5 sec. ? */ if (time_before(jiffies, *lastplus + PLUSWAIT2)) *pluscount = 0; } if ((*pluscount == 3) && (count == 1)) isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1); if (*pluscount > 3) *pluscount = 1; } else *pluscount = 0; *lastplus = jiffies; count--; } } /* * Return result of AT-emulator to tty-receive-buffer, depending on * modem-register 12, bit 0 and 1. * For CONNECT-messages also switch to online-mode. * For RING-message handle auto-ATA if register 0 != 0 */ static void isdn_tty_modem_result(int code, modem_info *info) { atemu *m = &info->emu; static char *msg[] = {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR", "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER", "RINGING", "NO MSN/EAZ", "VCON", "RUNG"}; char s[ISDN_MSNLEN + 10]; switch (code) { case RESULT_RING: m->mdmreg[REG_RINGCNT]++; if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA]) /* Automatically accept incoming call */ isdn_tty_cmd_ATA(info); break; case RESULT_NO_CARRIER: #ifdef ISDN_DEBUG_MODEM_HUP printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n", info->closing, !info->port.tty); #endif m->mdmreg[REG_RINGCNT] = 0; del_timer(&info->nc_timer); info->ncarrier = 0; if (info->closing || !info->port.tty) return; #ifdef CONFIG_ISDN_AUDIO if (info->vonline & 1) { #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n", info->line); #endif /* voice-recording, add DLE-ETX */ isdn_tty_at_cout("\020\003", info); } if (info->vonline & 2) { #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n", info->line); #endif /* voice-playing, add DLE-DC4 */ isdn_tty_at_cout("\020\024", info); } #endif break; case RESULT_CONNECT: case RESULT_CONNECT64000: sprintf(info->last_cause, "0000"); if (!info->online) info->online = 2; break; case RESULT_VCON: #ifdef ISDN_DEBUG_MODEM_VOICE printk(KERN_DEBUG "res3: send VCON on ttyI%d\n", info->line); #endif sprintf(info->last_cause, "0000"); if (!info->online) info->online = 1; break; } /* switch (code) */ if (m->mdmreg[REG_RESP] & BIT_RESP) { /* Show results */ if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) { /* Show numeric results only */ sprintf(s, "\r\n%d\r\n", code); isdn_tty_at_cout(s, info); } else { if (code == RESULT_RING) { /* return if "show RUNG" and ringcounter>1 */ if ((m->mdmreg[REG_RUNG] & BIT_RUNG) && (m->mdmreg[REG_RINGCNT] > 1)) return; /* print CID, _before_ _every_ ring */ if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) { isdn_tty_at_cout("\r\nCALLER NUMBER: ", info); isdn_tty_at_cout(dev->num[info->drv_index], info); if (m->mdmreg[REG_CDN] & BIT_CDN) { isdn_tty_at_cout("\r\nCALLED NUMBER: ", info); isdn_tty_at_cout(info->emu.cpn, info); } } } isdn_tty_at_cout("\r\n", info); isdn_tty_at_cout(msg[code], info); switch (code) { case RESULT_CONNECT: switch (m->mdmreg[REG_L2PROT]) { case ISDN_PROTO_L2_MODEM: isdn_tty_at_cout(" ", info); isdn_tty_at_cout(m->connmsg, info); break; } break; case RESULT_RING: /* Append CPN, if enabled */ if ((m->mdmreg[REG_CPN] & BIT_CPN)) { sprintf(s, "/%s", m->cpn); isdn_tty_at_cout(s, info); } /* Print CID only once, _after_ 1st RING */ if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) && (m->mdmreg[REG_RINGCNT] == 1)) { isdn_tty_at_cout("\r\n", info); isdn_tty_at_cout("CALLER NUMBER: ", info); isdn_tty_at_cout(dev->num[info->drv_index], info); if (m->mdmreg[REG_CDN] & BIT_CDN) { isdn_tty_at_cout("\r\nCALLED NUMBER: ", info); isdn_tty_at_cout(info->emu.cpn, info); } } break; case RESULT_NO_CARRIER: case RESULT_NO_DIALTONE: case RESULT_BUSY: case RESULT_NO_ANSWER: m->mdmreg[REG_RINGCNT] = 0; /* Append Cause-Message if enabled */ if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) { sprintf(s, "/%s", info->last_cause); isdn_tty_at_cout(s, info); } break; case RESULT_CONNECT64000: /* Append Protocol to CONNECT message */ switch (m->mdmreg[REG_L2PROT]) { case ISDN_PROTO_L2_X75I: case ISDN_PROTO_L2_X75UI: case ISDN_PROTO_L2_X75BUI: isdn_tty_at_cout("/X.75", info); break; case ISDN_PROTO_L2_HDLC: isdn_tty_at_cout("/HDLC", info); break; case ISDN_PROTO_L2_V11096: isdn_tty_at_cout("/V110/9600", info); break; case ISDN_PROTO_L2_V11019: isdn_tty_at_cout("/V110/19200", info); break; case ISDN_PROTO_L2_V11038: isdn_tty_at_cout("/V110/38400", info); break; } if (m->mdmreg[REG_T70] & BIT_T70) { isdn_tty_at_cout("/T.70", info); if (m->mdmreg[REG_T70] & BIT_T70_EXT) isdn_tty_at_cout("+", info); } break; } isdn_tty_at_cout("\r\n", info); } } if (code == RESULT_NO_CARRIER) { if (info->closing || (!info->port.tty)) return; if (tty_port_check_carrier(&info->port)) tty_hangup(info->port.tty); } } /* * Display a modem-register-value. */ static void isdn_tty_show_profile(int ridx, modem_info *info) { char v[6]; sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]); isdn_tty_at_cout(v, info); } /* * Get MSN-string from char-pointer, set pointer to end of number */ static void isdn_tty_get_msnstr(char *n, char **p) { int limit = ISDN_MSNLEN - 1; while (((*p[0] >= '0' && *p[0] <= '9') || /* Why a comma ??? */ (*p[0] == ',') || (*p[0] == ':')) && (limit--)) *n++ = *p[0]++; *n = '\0'; } /* * Get phone-number from modem-commandbuffer */ static void isdn_tty_getdial(char *p, char *q, int cnt) { int first = 1; int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid buffer overflow */ while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt > 0) { if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) || ((*p == 'R') && first) || (*p == '*') || (*p == '#')) { *q++ = *p; limit--; } if (!limit) break; p++; first = 0; } *q = 0; } #define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; } #define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; } static void isdn_tty_report(modem_info *info) { atemu *m = &info->emu; char s[80]; isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info); sprintf(s, " Remote Number: %s\r\n", info->last_num); isdn_tty_at_cout(s, info); sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming"); isdn_tty_at_cout(s, info); isdn_tty_at_cout(" Layer-2 Protocol: ", info); switch (info->last_l2) { case ISDN_PROTO_L2_X75I: isdn_tty_at_cout("X.75i", info); break; case ISDN_PROTO_L2_X75UI: isdn_tty_at_cout("X.75ui", info); break; case ISDN_PROTO_L2_X75BUI: isdn_tty_at_cout("X.75bui", info); break; case ISDN_PROTO_L2_HDLC: isdn_tty_at_cout("HDLC", info); break; case ISDN_PROTO_L2_V11096: isdn_tty_at_cout("V.110 9600 Baud", info); break; case ISDN_PROTO_L2_V11019: isdn_tty_at_cout("V.110 19200 Baud", info); break; case ISDN_PROTO_L2_V11038: isdn_tty_at_cout("V.110 38400 Baud", info); break; case ISDN_PROTO_L2_TRANS: isdn_tty_at_cout("transparent", info); break; case ISDN_PROTO_L2_MODEM: isdn_tty_at_cout("modem", info); break; case ISDN_PROTO_L2_FAX: isdn_tty_at_cout("fax", info); break; default: isdn_tty_at_cout("unknown", info); break; } if (m->mdmreg[REG_T70] & BIT_T70) { isdn_tty_at_cout("/T.70", info); if (m->mdmreg[REG_T70] & BIT_T70_EXT) isdn_tty_at_cout("+", info); } isdn_tty_at_cout("\r\n", info); isdn_tty_at_cout(" Service: ", info); switch (info->last_si) { case 1: isdn_tty_at_cout("audio\r\n", info); break; case 5: isdn_tty_at_cout("btx\r\n", info); break; case 7: isdn_tty_at_cout("data\r\n", info); break; default: sprintf(s, "%d\r\n", info->last_si); isdn_tty_at_cout(s, info); break; } sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote"); isdn_tty_at_cout(s, info); sprintf(s, " Last cause: %s\r\n", info->last_cause); isdn_tty_at_cout(s, info); } /* * Parse AT&.. commands. */ static int isdn_tty_cmd_ATand(char **p, modem_info *info) { atemu *m = &info->emu; int i; char rb[100]; #define MAXRB (sizeof(rb) - 1) switch (*p[0]) { case 'B': /* &B - Set Buffersize */ p[0]++; i = isdn_getnum(p); if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX)) PARSE_ERROR1; #ifdef CONFIG_ISDN_AUDIO if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF)) PARSE_ERROR1; #endif m->mdmreg[REG_PSIZE] = i / 16; info->xmit_size = m->mdmreg[REG_PSIZE] * 16; switch (m->mdmreg[REG_L2PROT]) { case ISDN_PROTO_L2_V11096: case ISDN_PROTO_L2_V11019: case ISDN_PROTO_L2_V11038: info->xmit_size /= 10; } break; case 'C': /* &C - DCD Status */ p[0]++; switch (isdn_getnum(p)) { case 0: m->mdmreg[REG_DCD] &= ~BIT_DCD; break; case 1: m->mdmreg[REG_DCD] |= BIT_DCD; break; default: PARSE_ERROR1 } break; case 'D': /* &D - Set DTR-Low-behavior */ p[0]++; switch (isdn_getnum(p)) { case 0: m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP; m->mdmreg[REG_DTRR] &= ~BIT_DTRR; break; case 2: m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP; m->mdmreg[REG_DTRR] &= ~BIT_DTRR; break; case 3: m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP; m->mdmreg[REG_DTRR] |= BIT_DTRR; break; default: PARSE_ERROR1 } break; case 'E': /* &E -Set EAZ/MSN */ p[0]++; isdn_tty_get_msnstr(m->msn, p); break; case 'F': /* &F -Set Factory-Defaults */ p[0]++; if (info->msr & UART_MSR_DCD) PARSE_ERROR1; isdn_tty_reset_profile(m); isdn_tty_modem_reset_regs(info, 1); break; #ifdef DUMMY_HAYES_AT case 'K': /* only for be compilant with common scripts */ /* &K Flowcontrol - no function */ p[0]++; isdn_getnum(p); break; #endif case 'L': /* &L -Set Numbers to listen on */ p[0]++; i = 0; while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) && (i < ISDN_LMSNLEN - 1)) m->lmsn[i++] = *p[0]++; m->lmsn[i] = '\0'; break; case 'R': /* &R - Set V.110 bitrate adaption */ p[0]++; i = isdn_getnum(p); switch (i) { case 0: /* Switch off V.110, back to X.75 */ m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; m->mdmreg[REG_SI2] = 0; info->xmit_size = m->mdmreg[REG_PSIZE] * 16; break; case 9600: m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096; m->mdmreg[REG_SI2] = 197; info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10; break; case 19200: m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019; m->mdmreg[REG_SI2] = 199; info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10; break; case 38400: m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038; m->mdmreg[REG_SI2] = 198; /* no existing standard for this */ info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10; break; default: PARSE_ERROR1; } /* Switch off T.70 */ m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT); /* Set Service 7 */ m->mdmreg[REG_SI1] |= 4; break; case 'S': /* &S - Set Windowsize */ p[0]++; i = isdn_getnum(p); if ((i > 0) && (i < 9)) m->mdmreg[REG_WSIZE] = i; else PARSE_ERROR1; break; case 'V': /* &V - Show registers */ p[0]++; isdn_tty_at_cout("\r\n", info); for (i = 0; i < ISDN_MODEM_NUMREG; i++) { sprintf(rb, "S%02d=%03d%s", i, m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n"); isdn_tty_at_cout(rb, info); } sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n", strlen(m->msn) ? m->msn : "None"); isdn_tty_at_cout(rb, info); if (strlen(m->lmsn)) { isdn_tty_at_cout("\r\nListen: ", info); isdn_tty_at_cout(m->lmsn, info); isdn_tty_at_cout("\r\n", info); } break; case 'W': /* &W - Write Profile */ p[0]++; switch (*p[0]) { case '0': p[0]++; modem_write_profile(m); break; default: PARSE_ERROR1; } break; case 'X': /* &X - Switch to BTX-Mode and T.70 */ p[0]++; switch (isdn_getnum(p)) { case 0: m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT); info->xmit_size = m->mdmreg[REG_PSIZE] * 16; break; case 1: m->mdmreg[REG_T70] |= BIT_T70; m->mdmreg[REG_T70] &= ~BIT_T70_EXT; m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; info->xmit_size = 112; m->mdmreg[REG_SI1] = 4; m->mdmreg[REG_SI2] = 0; break; case 2: m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT); m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; info->xmit_size = 112; m->mdmreg[REG_SI1] = 4; m->mdmreg[REG_SI2] = 0; break; default: PARSE_ERROR1; } break; default: PARSE_ERROR1; } return 0; } static int isdn_tty_check_ats(int mreg, int mval, modem_info *info, atemu *m) { /* Some plausibility checks */ switch (mreg) { case REG_L2PROT: if (mval > ISDN_PROTO_L2_MAX) return 1; break; case REG_PSIZE: if ((mval * 16) > ISDN_SERIAL_XMIT_MAX) return 1; #ifdef CONFIG_ISDN_AUDIO if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX)) return 1; #endif info->xmit_size = mval * 16; switch (m->mdmreg[REG_L2PROT]) { case ISDN_PROTO_L2_V11096: case ISDN_PROTO_L2_V11019: case ISDN_PROTO_L2_V11038: info->xmit_size /= 10; } break; case REG_SI1I: case REG_PLAN: case REG_SCREEN: /* readonly registers */ return 1; } return 0; } /* * Perform ATS command */ static int isdn_tty_cmd_ATS(char **p, modem_info *info) { atemu *m = &info->emu; int bitpos; int mreg; int mval; int bval; mreg = isdn_getnum(p); if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG) PARSE_ERROR1; switch (*p[0]) { case '=': p[0]++; mval = isdn_getnum(p); if (mval < 0 || mval > 255) PARSE_ERROR1; if (isdn_tty_check_ats(mreg, mval, info, m)) PARSE_ERROR1; m->mdmreg[mreg] = mval; break; case '.': /* Set/Clear a single bit */ p[0]++; bitpos = isdn_getnum(p); if ((bitpos < 0) || (bitpos > 7)) PARSE_ERROR1; switch (*p[0]) { case '=': p[0]++; bval = isdn_getnum(p); if (bval < 0 || bval > 1) PARSE_ERROR1; if (bval) mval = m->mdmreg[mreg] | (1 << bitpos); else mval = m->mdmreg[mreg] & ~(1 << bitpos); if (isdn_tty_check_ats(mreg, mval, info, m)) PARSE_ERROR1; m->mdmreg[mreg] = mval; break; case '?': p[0]++; isdn_tty_at_cout("\r\n", info); isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0", info); break; default: PARSE_ERROR1; } break; case '?': p[0]++; isdn_tty_show_profile(mreg, info); break; default: PARSE_ERROR1; break; } return 0; } /* * Perform ATA command */ static void isdn_tty_cmd_ATA(modem_info *info) { atemu *m = &info->emu; isdn_ctrl cmd; int l2; if (info->msr & UART_MSR_RI) { /* Accept incoming call */ info->last_dir = 0; strcpy(info->last_num, dev->num[info->drv_index]); m->mdmreg[REG_RINGCNT] = 0; info->msr &= ~UART_MSR_RI; l2 = m->mdmreg[REG_L2PROT]; #ifdef CONFIG_ISDN_AUDIO /* If more than one bit set in reg18, autoselect Layer2 */ if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) { if (m->mdmreg[REG_SI1I] == 1) { if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX)) l2 = ISDN_PROTO_L2_TRANS; } else l2 = ISDN_PROTO_L2_X75I; } #endif cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL2; cmd.arg = info->isdn_channel + (l2 << 8); info->last_l2 = l2; isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_SETL3; cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); #ifdef CONFIG_ISDN_TTY_FAX if (l2 == ISDN_PROTO_L2_FAX) { cmd.parm.fax = info->fax; info->fax->direction = ISDN_TTY_FAX_CONN_IN; } #endif isdn_command(&cmd); cmd.driver = info->isdn_driver; cmd.arg = info->isdn_channel; cmd.command = ISDN_CMD_ACCEPTD; info->dialing = 16; info->emu.carrierwait = 0; isdn_command(&cmd); isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1); } else isdn_tty_modem_result(RESULT_NO_ANSWER, info); } #ifdef CONFIG_ISDN_AUDIO /* * Parse AT+F.. commands */ static int isdn_tty_cmd_PLUSF(char **p, modem_info *info) { atemu *m = &info->emu; char rs[20]; if (!strncmp(p[0], "CLASS", 5)) { p[0] += 5; switch (*p[0]) { case '?': p[0]++; sprintf(rs, "\r\n%d", (m->mdmreg[REG_SI1] & 1) ? 8 : 0); #ifdef CONFIG_ISDN_TTY_FAX if (TTY_IS_FCLASS2(info)) sprintf(rs, "\r\n2"); else if (TTY_IS_FCLASS1(info)) sprintf(rs, "\r\n1"); #endif isdn_tty_at_cout(rs, info); break; case '=': p[0]++; switch (*p[0]) { case '0': p[0]++; m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS; m->mdmreg[REG_SI1] = 4; info->xmit_size = m->mdmreg[REG_PSIZE] * 16; break; #ifdef CONFIG_ISDN_TTY_FAX case '1': p[0]++; if (!(dev->global_features & ISDN_FEATURE_L3_FCLASS1)) PARSE_ERROR1; m->mdmreg[REG_SI1] = 1; m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX; m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1; info->xmit_size = m->mdmreg[REG_PSIZE] * 16; break; case '2': p[0]++; if (!(dev->global_features & ISDN_FEATURE_L3_FCLASS2)) PARSE_ERROR1; m->mdmreg[REG_SI1] = 1; m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX; m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2; info->xmit_size = m->mdmreg[REG_PSIZE] * 16; break; #endif case '8': p[0]++; /* L2 will change on dialout with si=1 */ m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS; m->mdmreg[REG_SI1] = 5; info->xmit_size = VBUF; break; case '?': p[0]++; strcpy(rs, "\r\n0,"); #ifdef CONFIG_ISDN_TTY_FAX if (dev->global_features & ISDN_FEATURE_L3_FCLASS1) strcat(rs, "1,"); if (dev->global_features & ISDN_FEATURE_L3_FCLASS2) strcat(rs, "2,"); #endif strcat(rs, "8"); isdn_tty_at_cout(rs, info); break; default: PARSE_ERROR1; } break; default: PARSE_ERROR1; } return 0; } #ifdef CONFIG_ISDN_TTY_FAX return (isdn_tty_cmd_PLUSF_FAX(p, info)); #else PARSE_ERROR1; #endif } /* * Parse AT+V.. commands */ static int isdn_tty_cmd_PLUSV(char **p, modem_info *info) { atemu *m = &info->emu; isdn_ctrl cmd; static char *vcmd[] = {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL}; int i; int par1; int par2; char rs[20]; i = 0; while (vcmd[i]) { if (!strncmp(vcmd[i], p[0], 2)) { p[0] += 2; break; } i++; } switch (i) { case 0: /* AT+VNH - Auto hangup feature */ switch (*p[0]) { case '?': p[0]++; isdn_tty_at_cout("\r\n1", info); break; case '=': p[0]++; switch (*p[0]) { case '1': p[0]++; break; case '?': p[0]++; isdn_tty_at_cout("\r\n1", info); break; default: PARSE_ERROR1; } break; default: PARSE_ERROR1; } break; case 1: /* AT+VIP - Reset all voice parameters */ isdn_tty_modem_reset_vpar(m); break; case 2: /* AT+VLS - Select device, accept incoming call */ switch (*p[0]) { case '?': p[0]++; sprintf(rs, "\r\n%d", m->vpar[0]); isdn_tty_at_cout(rs, info); break; case '=': p[0]++; switch (*p[0]) { case '0': p[0]++; m->vpar[0] = 0; break; case '2': p[0]++; m->vpar[0] = 2; break; case '?': p[0]++; isdn_tty_at_cout("\r\n0,2", info); break; default: PARSE_ERROR1; } break; default: PARSE_ERROR1; } break; case 3: /* AT+VRX - Start recording */ if (!m->vpar[0]) PARSE_ERROR1; if (info->online != 1) { isdn_tty_modem_result(RESULT_NO_ANSWER, info); return 1; } info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state); if (!info->dtmf_state) { printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n"); PARSE_ERROR1; } info->silence_state = isdn_audio_silence_init(info->silence_state); if (!info->silence_state) { printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n"); PARSE_ERROR1; } if (m->vpar[3] < 5) { info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]); if (!info->adpcmr) { printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n"); PARSE_ERROR1; } } #ifdef ISDN_DEBUG_AT printk(KERN_DEBUG "AT: +VRX\n"); #endif info->vonline |= 1; isdn_tty_modem_result(RESULT_CONNECT, info); return 0; break; case 4: /* AT+VSD - Silence detection */ switch (*p[0]) { case '?': p[0]++; sprintf(rs, "\r\n<%d>,<%d>", m->vpar[1], m->vpar[2]); isdn_tty_at_cout(rs, info); break; case '=': p[0]++; if ((*p[0] >= '0') && (*p[0] <= '9')) { par1 = isdn_getnum(p); if ((par1 < 0) || (par1 > 31)) PARSE_ERROR1; if (*p[0] != ',') PARSE_ERROR1; p[0]++; par2 = isdn_getnum(p); if ((par2 < 0) || (par2 > 255)) PARSE_ERROR1; m->vpar[1] = par1; m->vpar[2] = par2; break; } else if (*p[0] == '?') { p[0]++; isdn_tty_at_cout("\r\n<0-31>,<0-255>", info); break; } else PARSE_ERROR1; break; default: PARSE_ERROR1; } break; case 5: /* AT+VSM - Select compression */ switch (*p[0]) { case '?': p[0]++; sprintf(rs, "\r\n<%d>,<%d><8000>", m->vpar[3], m->vpar[1]); isdn_tty_at_cout(rs, info); break; case '=': p[0]++; switch (*p[0]) { case '2': case '3': case '4': case '5': case '6': par1 = isdn_getnum(p); if ((par1 < 2) || (par1 > 6)) PARSE_ERROR1; m->vpar[3] = par1; break; case '?': p[0]++; isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n", info); isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n", info); isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n", info); isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n", info); isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n", info); break; default: PARSE_ERROR1; } break; default: PARSE_ERROR1; } break; case 6: /* AT+VTX - Start sending */ if (!m->vpar[0]) PARSE_ERROR1; if (info->online != 1) { isdn_tty_modem_result(RESULT_NO_ANSWER, info); return 1; } info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state); if (!info->dtmf_state) { printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n"); PARSE_ERROR1; } if (m->vpar[3] < 5) { info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]); if (!info->adpcms) { printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n"); PARSE_ERROR1; } } #ifdef ISDN_DEBUG_AT printk(KERN_DEBUG "AT: +VTX\n"); #endif m->lastDLE = 0; info->vonline |= 2; isdn_tty_modem_result(RESULT_CONNECT, info); return 0; break; case 7: /* AT+VDD - DTMF detection */ switch (*p[0]) { case '?': p[0]++; sprintf(rs, "\r\n<%d>,<%d>", m->vpar[4], m->vpar[5]); isdn_tty_at_cout(rs, info); break; case '=': p[0]++; if ((*p[0] >= '0') && (*p[0] <= '9')) { if (info->online != 1) PARSE_ERROR1; par1 = isdn_getnum(p); if ((par1 < 0) || (par1 > 15)) PARSE_ERROR1; if (*p[0] != ',') PARSE_ERROR1; p[0]++; par2 = isdn_getnum(p); if ((par2 < 0) || (par2 > 255)) PARSE_ERROR1; m->vpar[4] = par1; m->vpar[5] = par2; cmd.driver = info->isdn_driver; cmd.command = ISDN_CMD_AUDIO; cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8); cmd.parm.num[0] = par1; cmd.parm.num[1] = par2; isdn_command(&cmd); break; } else if (*p[0] == '?') { p[0]++; isdn_tty_at_cout("\r\n<0-15>,<0-255>", info); break; } else PARSE_ERROR1; break; default: PARSE_ERROR1; } break; default: PARSE_ERROR1; } return 0; } #endif /* CONFIG_ISDN_AUDIO */ /* * Parse and perform an AT-command-line. */ static void isdn_tty_parse_at(modem_info *info) { atemu *m = &info->emu; char *p; char ds[ISDN_MSNLEN]; #ifdef ISDN_DEBUG_AT printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd); #endif for (p = &m->mdmcmd[2]; *p;) { switch (*p) { case ' ': p++; break; case 'A': /* A - Accept incoming call */ p++; isdn_tty_cmd_ATA(info); return; case 'D': /* D - Dial */ if (info->msr & UART_MSR_DCD) PARSE_ERROR; if (info->msr & UART_MSR_RI) { isdn_tty_modem_result(RESULT_NO_CARRIER, info); return; } isdn_tty_getdial(++p, ds, sizeof ds); p += strlen(p); if (!strlen(m->msn)) isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info); else if (strlen(ds)) isdn_tty_dial(ds, info, m); else PARSE_ERROR; return; case 'E': /* E - Turn Echo on/off */ p++; switch (isdn_getnum(&p)) { case 0: m->mdmreg[REG_ECHO] &= ~BIT_ECHO; break; case 1: m->mdmreg[REG_ECHO] |= BIT_ECHO; break; default: PARSE_ERROR; } break; case 'H': /* H - On/Off-hook */ p++; switch (*p) { case '0': p++; isdn_tty_on_hook(info); break; case '1': p++; isdn_tty_off_hook(); break; default: isdn_tty_on_hook(info); break; } break; case 'I': /* I - Information */ p++; isdn_tty_at_cout("\r\nLinux ISDN", info); switch (*p) { case '0': case '1': p++; break; case '2': p++; isdn_tty_report(info); break; case '3': p++; snprintf(ds, sizeof(ds), "\r\n%d", info->emu.charge); isdn_tty_at_cout(ds, info); break; default:; } break; #ifdef DUMMY_HAYES_AT case 'L': case 'M': /* only for be compilant with common scripts */ /* no function */ p++; isdn_getnum(&p); break; #endif case 'O': /* O - Go online */ p++; if (info->msr & UART_MSR_DCD) /* if B-Channel is up */ isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT : RESULT_CONNECT64000, info); else isdn_tty_modem_result(RESULT_NO_CARRIER, info); return; case 'Q': /* Q - Turn Emulator messages on/off */ p++; switch (isdn_getnum(&p)) { case 0: m->mdmreg[REG_RESP] |= BIT_RESP; break; case 1: m->mdmreg[REG_RESP] &= ~BIT_RESP; break; default: PARSE_ERROR; } break; case 'S': /* S - Set/Get Register */ p++; if (isdn_tty_cmd_ATS(&p, info)) return; break; case 'V': /* V - Numeric or ASCII Emulator-messages */ p++; switch (isdn_getnum(&p)) { case 0: m->mdmreg[REG_RESP] |= BIT_RESPNUM; break; case 1: m->mdmreg[REG_RESP] &= ~BIT_RESPNUM; break; default: PARSE_ERROR; } break; case 'Z': /* Z - Load Registers from Profile */ p++; if (info->msr & UART_MSR_DCD) { info->online = 0; isdn_tty_on_hook(info); } isdn_tty_modem_reset_regs(info, 1); break; case '+': p++; switch (*p) { #ifdef CONFIG_ISDN_AUDIO case 'F': p++; if (isdn_tty_cmd_PLUSF(&p, info)) return; break; case 'V': if ((!(m->mdmreg[REG_SI1] & 1)) || (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM)) PARSE_ERROR; p++; if (isdn_tty_cmd_PLUSV(&p, info)) return; break; #endif /* CONFIG_ISDN_AUDIO */ case 'S': /* SUSPEND */ p++; isdn_tty_get_msnstr(ds, &p); isdn_tty_suspend(ds, info, m); break; case 'R': /* RESUME */ p++; isdn_tty_get_msnstr(ds, &p); isdn_tty_resume(ds, info, m); break; case 'M': /* MESSAGE */ p++; isdn_tty_send_msg(info, m, p); break; default: PARSE_ERROR; } break; case '&': p++; if (isdn_tty_cmd_ATand(&p, info)) return; break; default: PARSE_ERROR; } } #ifdef CONFIG_ISDN_AUDIO if (!info->vonline) #endif isdn_tty_modem_result(RESULT_OK, info); } /* Need own toupper() because standard-toupper is not available * within modules. */ #define my_toupper(c) (((c >= 'a') && (c <= 'z')) ? (c & 0xdf) : c) /* * Perform line-editing of AT-commands * * Parameters: * p inputbuffer * count length of buffer * channel index to line (minor-device) */ static int isdn_tty_edit_at(const char *p, int count, modem_info *info) { atemu *m = &info->emu; int total = 0; u_char c; char eb[2]; int cnt; for (cnt = count; cnt > 0; p++, cnt--) { c = *p; total++; if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) { /* Separator (CR or LF) */ m->mdmcmd[m->mdmcmdl] = 0; if (m->mdmreg[REG_ECHO] & BIT_ECHO) { eb[0] = c; eb[1] = 0; isdn_tty_at_cout(eb, info); } if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2)))) isdn_tty_parse_at(info); m->mdmcmdl = 0; continue; } if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) { /* Backspace-Function */ if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) { if (m->mdmcmdl) m->mdmcmdl--; if (m->mdmreg[REG_ECHO] & BIT_ECHO) isdn_tty_at_cout("\b", info); } continue; } if (cmdchar(c)) { if (m->mdmreg[REG_ECHO] & BIT_ECHO) { eb[0] = c; eb[1] = 0; isdn_tty_at_cout(eb, info); } if (m->mdmcmdl < 255) { c = my_toupper(c); switch (m->mdmcmdl) { case 1: if (c == 'T') { m->mdmcmd[m->mdmcmdl] = c; m->mdmcmd[++m->mdmcmdl] = 0; break; } else m->mdmcmdl = 0; /* Fall through - check for 'A' */ case 0: if (c == 'A') { m->mdmcmd[m->mdmcmdl] = c; m->mdmcmd[++m->mdmcmdl] = 0; } break; default: m->mdmcmd[m->mdmcmdl] = c; m->mdmcmd[++m->mdmcmdl] = 0; } } } } return total; } /* * Switch all modem-channels who are online and got a valid * escape-sequence 1.5 seconds ago, to command-mode. * This function is called every second via timer-interrupt from within * timer-dispatcher isdn_timer_function() */ void isdn_tty_modem_escape(void) { int ton = 0; int i; int midx; for (i = 0; i < ISDN_MAX_CHANNELS; i++) if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) { modem_info *info = &dev->mdm.info[midx]; if (info->online) { ton = 1; if ((info->emu.pluscount == 3) && time_after(jiffies, info->emu.lastplus + PLUSWAIT2)) { info->emu.pluscount = 0; info->online = 0; isdn_tty_modem_result(RESULT_OK, info); } } } isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton); } /* * Put a RING-message to all modem-channels who have the RI-bit set. * This function is called every second via timer-interrupt from within * timer-dispatcher isdn_timer_function() */ void isdn_tty_modem_ring(void) { int ton = 0; int i; for (i = 0; i < ISDN_MAX_CHANNELS; i++) { modem_info *info = &dev->mdm.info[i]; if (info->msr & UART_MSR_RI) { ton = 1; isdn_tty_modem_result(RESULT_RING, info); } } isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton); } /* * For all online tty's, try sending data to * the lower levels. */ void isdn_tty_modem_xmit(void) { int ton = 1; int i; for (i = 0; i < ISDN_MAX_CHANNELS; i++) { modem_info *info = &dev->mdm.info[i]; if (info->online) { ton = 1; isdn_tty_senddown(info); isdn_tty_tint(info); } } isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton); } /* * Check all channels if we have a 'no carrier' timeout. * Timeout value is set by Register S7. */ void isdn_tty_carrier_timeout(void) { int ton = 0; int i; for (i = 0; i < ISDN_MAX_CHANNELS; i++) { modem_info *info = &dev->mdm.info[i]; if (!info->dialing) continue; if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) { info->dialing = 0; isdn_tty_modem_result(RESULT_NO_CARRIER, info); isdn_tty_modem_hup(info, 1); } else ton = 1; } isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton); }
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