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The isdn4linux driver uses the big kernel lock only to serialize access to a few fields in its own modem_info structure. The easiest replacement is a driver-wide mutex. More fine-grained locking would be more appropriate here, but likely harder to implement. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
3893 lines
94 KiB
C
3893 lines
94 KiB
C
/* $Id: isdn_tty.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $
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*
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* Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
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*
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* Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
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* Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#undef ISDN_TTY_STAT_DEBUG
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#include <linux/isdn.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include "isdn_common.h"
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#include "isdn_tty.h"
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#ifdef CONFIG_ISDN_AUDIO
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#include "isdn_audio.h"
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#define VBUF 0x3e0
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#define VBUFX (VBUF/16)
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#endif
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#define FIX_FILE_TRANSFER
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#define DUMMY_HAYES_AT
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/* Prototypes */
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static DEFINE_MUTEX(modem_info_mutex);
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static int isdn_tty_edit_at(const char *, int, modem_info *);
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static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *);
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static void isdn_tty_modem_reset_regs(modem_info *, int);
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static void isdn_tty_cmd_ATA(modem_info *);
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static void isdn_tty_flush_buffer(struct tty_struct *);
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static void isdn_tty_modem_result(int, modem_info *);
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#ifdef CONFIG_ISDN_AUDIO
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static int isdn_tty_countDLE(unsigned char *, int);
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#endif
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/* Leave this unchanged unless you know what you do! */
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#define MODEM_PARANOIA_CHECK
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#define MODEM_DO_RESTART
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static int bit2si[8] =
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{1, 5, 7, 7, 7, 7, 7, 7};
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static int si2bit[8] =
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{4, 1, 4, 4, 4, 4, 4, 4};
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char *isdn_tty_revision = "$Revision: 1.1.2.3 $";
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/* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
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* to stuff incoming data directly into a tty's flip-buffer. This
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* is done to speed up tty-receiving if the receive-queue is empty.
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* This routine MUST be called with interrupts off.
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* Return:
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* 1 = Success
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* 0 = Failure, data has to be buffered and later processed by
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* isdn_tty_readmodem().
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*/
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static int
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isdn_tty_try_read(modem_info * info, struct sk_buff *skb)
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{
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int c;
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int len;
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struct tty_struct *tty;
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char last;
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if (info->online) {
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if ((tty = info->tty)) {
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if (info->mcr & UART_MCR_RTS) {
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len = skb->len
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#ifdef CONFIG_ISDN_AUDIO
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+ ISDN_AUDIO_SKB_DLECOUNT(skb)
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#endif
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;
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c = tty_buffer_request_room(tty, len);
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if (c >= len) {
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#ifdef CONFIG_ISDN_AUDIO
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if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
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int l = skb->len;
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unsigned char *dp = skb->data;
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while (--l) {
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if (*dp == DLE)
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tty_insert_flip_char(tty, DLE, 0);
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tty_insert_flip_char(tty, *dp++, 0);
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}
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if (*dp == DLE)
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tty_insert_flip_char(tty, DLE, 0);
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last = *dp;
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} else {
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#endif
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if(len > 1)
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tty_insert_flip_string(tty, skb->data, len - 1);
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last = skb->data[len - 1];
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#ifdef CONFIG_ISDN_AUDIO
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}
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#endif
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if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
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tty_insert_flip_char(tty, last, 0xFF);
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else
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tty_insert_flip_char(tty, last, TTY_NORMAL);
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tty_flip_buffer_push(tty);
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kfree_skb(skb);
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return 1;
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}
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}
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}
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}
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return 0;
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}
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/* isdn_tty_readmodem() is called periodically from within timer-interrupt.
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* It tries getting received data from the receive queue an stuff it into
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* the tty's flip-buffer.
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*/
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void
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isdn_tty_readmodem(void)
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{
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int resched = 0;
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int midx;
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int i;
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int r;
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struct tty_struct *tty;
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modem_info *info;
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for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
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if ((midx = dev->m_idx[i]) >= 0) {
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info = &dev->mdm.info[midx];
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if (info->online) {
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r = 0;
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#ifdef CONFIG_ISDN_AUDIO
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isdn_audio_eval_dtmf(info);
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if ((info->vonline & 1) && (info->emu.vpar[1]))
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isdn_audio_eval_silence(info);
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#endif
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if ((tty = info->tty)) {
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if (info->mcr & UART_MCR_RTS) {
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/* CISCO AsyncPPP Hack */
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if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
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r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
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else
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r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
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if (r)
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tty_flip_buffer_push(tty);
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} else
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r = 1;
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} else
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r = 1;
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if (r) {
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info->rcvsched = 0;
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resched = 1;
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} else
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info->rcvsched = 1;
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}
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}
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}
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if (!resched)
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isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
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}
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int
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isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb)
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{
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ulong flags;
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int midx;
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#ifdef CONFIG_ISDN_AUDIO
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int ifmt;
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#endif
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modem_info *info;
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if ((midx = dev->m_idx[i]) < 0) {
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/* if midx is invalid, packet is not for tty */
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return 0;
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}
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info = &dev->mdm.info[midx];
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#ifdef CONFIG_ISDN_AUDIO
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ifmt = 1;
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if ((info->vonline) && (!info->emu.vpar[4]))
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isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt);
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if ((info->vonline & 1) && (info->emu.vpar[1]))
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isdn_audio_calc_silence(info, skb->data, skb->len, ifmt);
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#endif
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if ((info->online < 2)
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#ifdef CONFIG_ISDN_AUDIO
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&& (!(info->vonline & 1))
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#endif
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) {
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/* If Modem not listening, drop data */
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kfree_skb(skb);
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return 1;
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}
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if (info->emu.mdmreg[REG_T70] & BIT_T70) {
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if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) {
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/* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */
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if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */
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skb_pull(skb, 4);
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else
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if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */
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skb_pull(skb, 2);
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} else
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/* T.70 decoding: Simply throw away the T.70 header (4 bytes) */
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if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1)))
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skb_pull(skb, 4);
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}
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#ifdef CONFIG_ISDN_AUDIO
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ISDN_AUDIO_SKB_DLECOUNT(skb) = 0;
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ISDN_AUDIO_SKB_LOCK(skb) = 0;
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if (info->vonline & 1) {
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/* voice conversion/compression */
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switch (info->emu.vpar[3]) {
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case 2:
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case 3:
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case 4:
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/* adpcm
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* Since compressed data takes less
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* space, we can overwrite the buffer.
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*/
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skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr,
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ifmt,
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skb->data,
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skb->data,
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skb->len));
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break;
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case 5:
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/* a-law */
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if (!ifmt)
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isdn_audio_ulaw2alaw(skb->data, skb->len);
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break;
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case 6:
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/* u-law */
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if (ifmt)
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isdn_audio_alaw2ulaw(skb->data, skb->len);
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break;
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}
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ISDN_AUDIO_SKB_DLECOUNT(skb) =
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isdn_tty_countDLE(skb->data, skb->len);
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}
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#ifdef CONFIG_ISDN_TTY_FAX
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else {
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if (info->faxonline & 2) {
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isdn_tty_fax_bitorder(info, skb);
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ISDN_AUDIO_SKB_DLECOUNT(skb) =
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isdn_tty_countDLE(skb->data, skb->len);
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}
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}
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#endif
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#endif
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/* Try to deliver directly via tty-buf if queue is empty */
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spin_lock_irqsave(&info->readlock, flags);
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if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
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if (isdn_tty_try_read(info, skb)) {
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spin_unlock_irqrestore(&info->readlock, flags);
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return 1;
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}
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/* Direct deliver failed or queue wasn't empty.
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* Queue up for later dequeueing via timer-irq.
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*/
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__skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb);
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dev->drv[di]->rcvcount[channel] +=
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(skb->len
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#ifdef CONFIG_ISDN_AUDIO
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+ ISDN_AUDIO_SKB_DLECOUNT(skb)
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#endif
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);
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spin_unlock_irqrestore(&info->readlock, flags);
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/* Schedule dequeuing */
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if ((dev->modempoll) && (info->rcvsched))
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isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1);
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return 1;
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}
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static void
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isdn_tty_cleanup_xmit(modem_info * info)
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{
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skb_queue_purge(&info->xmit_queue);
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#ifdef CONFIG_ISDN_AUDIO
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skb_queue_purge(&info->dtmf_queue);
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#endif
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}
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static void
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isdn_tty_tint(modem_info * info)
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{
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struct sk_buff *skb = skb_dequeue(&info->xmit_queue);
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int len, slen;
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if (!skb)
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return;
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len = skb->len;
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if ((slen = isdn_writebuf_skb_stub(info->isdn_driver,
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info->isdn_channel, 1, skb)) == len) {
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struct tty_struct *tty = info->tty;
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info->send_outstanding++;
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info->msr &= ~UART_MSR_CTS;
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info->lsr &= ~UART_LSR_TEMT;
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tty_wakeup(tty);
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return;
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}
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if (slen < 0) {
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/* Error: no channel, already shutdown, or wrong parameter */
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dev_kfree_skb(skb);
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return;
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}
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skb_queue_head(&info->xmit_queue, skb);
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}
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#ifdef CONFIG_ISDN_AUDIO
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static int
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isdn_tty_countDLE(unsigned char *buf, int len)
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{
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int count = 0;
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while (len--)
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if (*buf++ == DLE)
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count++;
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return count;
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}
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/* This routine is called from within isdn_tty_write() to perform
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* DLE-decoding when sending audio-data.
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*/
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static int
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isdn_tty_handleDLEdown(modem_info * info, atemu * m, int len)
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{
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unsigned char *p = &info->xmit_buf[info->xmit_count];
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int count = 0;
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while (len > 0) {
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if (m->lastDLE) {
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m->lastDLE = 0;
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switch (*p) {
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case DLE:
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/* Escape code */
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if (len > 1)
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memmove(p, p + 1, len - 1);
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p--;
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count++;
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break;
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case ETX:
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/* End of data */
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info->vonline |= 4;
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return count;
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case DC4:
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/* Abort RX */
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info->vonline &= ~1;
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#ifdef ISDN_DEBUG_MODEM_VOICE
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printk(KERN_DEBUG
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"DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n",
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info->line);
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#endif
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isdn_tty_at_cout("\020\003", info);
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if (!info->vonline) {
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#ifdef ISDN_DEBUG_MODEM_VOICE
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printk(KERN_DEBUG
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"DLEdown: send VCON on ttyI%d\n",
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info->line);
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#endif
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isdn_tty_at_cout("\r\nVCON\r\n", info);
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}
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/* Fall through */
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case 'q':
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case 's':
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/* Silence */
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if (len > 1)
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memmove(p, p + 1, len - 1);
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p--;
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break;
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}
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} else {
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if (*p == DLE)
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m->lastDLE = 1;
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else
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count++;
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}
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p++;
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len--;
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}
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if (len < 0) {
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printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n");
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return 0;
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}
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return count;
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}
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/* This routine is called from within isdn_tty_write() when receiving
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* audio-data. It interrupts receiving, if an character other than
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* ^S or ^Q is sent.
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*/
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static int
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isdn_tty_end_vrx(const char *buf, int c)
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{
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char ch;
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while (c--) {
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ch = *buf;
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if ((ch != 0x11) && (ch != 0x13))
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return 1;
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buf++;
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}
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return 0;
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}
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static int voice_cf[7] =
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{0, 0, 4, 3, 2, 0, 0};
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#endif /* CONFIG_ISDN_AUDIO */
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/* isdn_tty_senddown() is called either directly from within isdn_tty_write()
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* or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls
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* outgoing data from the tty's xmit-buffer, handles voice-decompression or
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* T.70 if necessary, and finally queues it up for sending via isdn_tty_tint.
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*/
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static void
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isdn_tty_senddown(modem_info * info)
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{
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int buflen;
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int skb_res;
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#ifdef CONFIG_ISDN_AUDIO
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int audio_len;
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#endif
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struct sk_buff *skb;
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#ifdef CONFIG_ISDN_AUDIO
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if (info->vonline & 4) {
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info->vonline &= ~6;
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if (!info->vonline) {
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#ifdef ISDN_DEBUG_MODEM_VOICE
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printk(KERN_DEBUG
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"senddown: send VCON on ttyI%d\n",
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info->line);
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#endif
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isdn_tty_at_cout("\r\nVCON\r\n", info);
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}
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}
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#endif
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if (!(buflen = info->xmit_count))
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return;
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if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0)
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info->msr &= ~UART_MSR_CTS;
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info->lsr &= ~UART_LSR_TEMT;
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/* info->xmit_count is modified here and in isdn_tty_write().
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* So we return here if isdn_tty_write() is in the
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* critical section.
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*/
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atomic_inc(&info->xmit_lock);
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if (!(atomic_dec_and_test(&info->xmit_lock)))
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return;
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if (info->isdn_driver < 0) {
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info->xmit_count = 0;
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return;
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}
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skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4;
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#ifdef CONFIG_ISDN_AUDIO
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if (info->vonline & 2)
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audio_len = buflen * voice_cf[info->emu.vpar[3]];
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else
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audio_len = 0;
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skb = dev_alloc_skb(skb_res + buflen + audio_len);
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#else
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skb = dev_alloc_skb(skb_res + buflen);
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#endif
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if (!skb) {
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printk(KERN_WARNING
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"isdn_tty: Out of memory in ttyI%d senddown\n",
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info->line);
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return;
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}
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skb_reserve(skb, skb_res);
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memcpy(skb_put(skb, buflen), info->xmit_buf, buflen);
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info->xmit_count = 0;
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#ifdef CONFIG_ISDN_AUDIO
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if (info->vonline & 2) {
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/* For now, ifmt is fixed to 1 (alaw), since this
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* is used with ISDN everywhere in the world, except
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* US, Canada and Japan.
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* Later, when US-ISDN protocols are implemented,
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* this setting will depend on the D-channel protocol.
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*/
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int ifmt = 1;
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|
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/* voice conversion/decompression */
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switch (info->emu.vpar[3]) {
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case 2:
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case 3:
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case 4:
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/* adpcm, compatible to ZyXel 1496 modem
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* with ROM revision 6.01
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*/
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audio_len = isdn_audio_adpcm2xlaw(info->adpcms,
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ifmt,
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skb->data,
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skb_put(skb, audio_len),
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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(unsigned long data)
|
|
{
|
|
modem_info *info = (modem_info *) data;
|
|
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->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>
|
|
|
|
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;
|
|
strncpy(&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. unfortunatly 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;
|
|
strncpy(&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 = strlen(msg);
|
|
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)
|
|
{
|
|
uint cflag,
|
|
cval,
|
|
fcr,
|
|
quot;
|
|
int i;
|
|
|
|
if (!info->tty || !info->tty->termios)
|
|
return;
|
|
cflag = info->tty->termios->c_cflag;
|
|
|
|
quot = i = cflag & CBAUD;
|
|
if (i & CBAUDEX) {
|
|
i &= ~CBAUDEX;
|
|
if (i < 1 || i > 2)
|
|
info->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;
|
|
fcr = 0;
|
|
|
|
/* CTS flow control flag and modem status interrupts */
|
|
if (cflag & CRTSCTS) {
|
|
info->flags |= ISDN_ASYNC_CTS_FLOW;
|
|
} else
|
|
info->flags &= ~ISDN_ASYNC_CTS_FLOW;
|
|
if (cflag & CLOCAL)
|
|
info->flags &= ~ISDN_ASYNC_CHECK_CD;
|
|
else {
|
|
info->flags |= ISDN_ASYNC_CHECK_CD;
|
|
}
|
|
}
|
|
|
|
static int
|
|
isdn_tty_startup(modem_info * info)
|
|
{
|
|
if (info->flags & ISDN_ASYNC_INITIALIZED)
|
|
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->tty)
|
|
clear_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
/*
|
|
* and set the speed of the serial port
|
|
*/
|
|
isdn_tty_change_speed(info);
|
|
|
|
info->flags |= ISDN_ASYNC_INITIALIZED;
|
|
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 (!(info->flags & ISDN_ASYNC_INITIALIZED))
|
|
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->tty || (info->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->tty)
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
|
info->flags &= ~ISDN_ASYNC_INITIALIZED;
|
|
}
|
|
|
|
/* 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->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, struct file *file)
|
|
{
|
|
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->flags & (1 << TTY_IO_ERROR))
|
|
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, struct file *file,
|
|
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->flags & (1 << TTY_IO_ERROR))
|
|
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, struct file *file,
|
|
uint cmd, ulong arg)
|
|
{
|
|
modem_info *info = (modem_info *) tty->driver_data;
|
|
int retval;
|
|
|
|
if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
|
|
return -ENODEV;
|
|
if (tty->flags & (1 << TTY_IO_ERROR))
|
|
return -EIO;
|
|
switch (cmd) {
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
|
#ifdef ISDN_DEBUG_MODEM_IOCTL
|
|
printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
|
|
#endif
|
|
retval = tty_check_change(tty);
|
|
if (retval)
|
|
return retval;
|
|
tty_wait_until_sent(tty, 0);
|
|
return 0;
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
|
#ifdef ISDN_DEBUG_MODEM_IOCTL
|
|
printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
|
|
#endif
|
|
retval = tty_check_change(tty);
|
|
if (retval)
|
|
return retval;
|
|
tty_wait_until_sent(tty, 0);
|
|
return 0;
|
|
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;
|
|
|
|
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)
|
|
return;
|
|
isdn_tty_change_speed(info);
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
|
!(tty->termios->c_cflag & CRTSCTS))
|
|
tty->hw_stopped = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ------------------------------------------------------------
|
|
* isdn_tty_open() and friends
|
|
* ------------------------------------------------------------
|
|
*/
|
|
static int
|
|
isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info * info)
|
|
{
|
|
DECLARE_WAITQUEUE(wait, NULL);
|
|
int do_clocal = 0;
|
|
int retval;
|
|
|
|
/*
|
|
* If the device is in the middle of being closed, then block
|
|
* until it's done, and then try again.
|
|
*/
|
|
if (tty_hung_up_p(filp) ||
|
|
(info->flags & ISDN_ASYNC_CLOSING)) {
|
|
if (info->flags & ISDN_ASYNC_CLOSING)
|
|
interruptible_sleep_on(&info->close_wait);
|
|
#ifdef MODEM_DO_RESTART
|
|
if (info->flags & ISDN_ASYNC_HUP_NOTIFY)
|
|
return -EAGAIN;
|
|
else
|
|
return -ERESTARTSYS;
|
|
#else
|
|
return -EAGAIN;
|
|
#endif
|
|
}
|
|
/*
|
|
* If non-blocking mode is set, then make the check up front
|
|
* and then exit.
|
|
*/
|
|
if ((filp->f_flags & O_NONBLOCK) ||
|
|
(tty->flags & (1 << TTY_IO_ERROR))) {
|
|
if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
|
|
return -EBUSY;
|
|
info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) {
|
|
if (info->normal_termios.c_cflag & CLOCAL)
|
|
do_clocal = 1;
|
|
} else {
|
|
if (tty->termios->c_cflag & CLOCAL)
|
|
do_clocal = 1;
|
|
}
|
|
/*
|
|
* Block waiting for the carrier detect and the line to become
|
|
* free (i.e., not in use by the callout). While we are in
|
|
* this loop, info->count is dropped by one, so that
|
|
* isdn_tty_close() knows when to free things. We restore it upon
|
|
* exit, either normal or abnormal.
|
|
*/
|
|
retval = 0;
|
|
add_wait_queue(&info->open_wait, &wait);
|
|
#ifdef ISDN_DEBUG_MODEM_OPEN
|
|
printk(KERN_DEBUG "isdn_tty_block_til_ready before block: ttyi%d, count = %d\n",
|
|
info->line, info->count);
|
|
#endif
|
|
if (!(tty_hung_up_p(filp)))
|
|
info->count--;
|
|
info->blocked_open++;
|
|
while (1) {
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
if (tty_hung_up_p(filp) ||
|
|
!(info->flags & ISDN_ASYNC_INITIALIZED)) {
|
|
#ifdef MODEM_DO_RESTART
|
|
if (info->flags & ISDN_ASYNC_HUP_NOTIFY)
|
|
retval = -EAGAIN;
|
|
else
|
|
retval = -ERESTARTSYS;
|
|
#else
|
|
retval = -EAGAIN;
|
|
#endif
|
|
break;
|
|
}
|
|
if (!(info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
|
|
!(info->flags & ISDN_ASYNC_CLOSING) &&
|
|
(do_clocal || (info->msr & UART_MSR_DCD))) {
|
|
break;
|
|
}
|
|
if (signal_pending(current)) {
|
|
retval = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
#ifdef ISDN_DEBUG_MODEM_OPEN
|
|
printk(KERN_DEBUG "isdn_tty_block_til_ready blocking: ttyi%d, count = %d\n",
|
|
info->line, info->count);
|
|
#endif
|
|
schedule();
|
|
}
|
|
current->state = TASK_RUNNING;
|
|
remove_wait_queue(&info->open_wait, &wait);
|
|
if (!tty_hung_up_p(filp))
|
|
info->count++;
|
|
info->blocked_open--;
|
|
#ifdef ISDN_DEBUG_MODEM_OPEN
|
|
printk(KERN_DEBUG "isdn_tty_block_til_ready after blocking: ttyi%d, count = %d\n",
|
|
info->line, info->count);
|
|
#endif
|
|
if (retval)
|
|
return retval;
|
|
info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
int retval, line;
|
|
|
|
line = tty->index;
|
|
if (line < 0 || line >= ISDN_MAX_CHANNELS)
|
|
return -ENODEV;
|
|
info = &dev->mdm.info[line];
|
|
if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))
|
|
return -ENODEV;
|
|
if (!try_module_get(info->owner)) {
|
|
printk(KERN_WARNING "%s: cannot reserve module\n", __func__);
|
|
return -ENODEV;
|
|
}
|
|
#ifdef ISDN_DEBUG_MODEM_OPEN
|
|
printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
|
|
info->count);
|
|
#endif
|
|
info->count++;
|
|
tty->driver_data = info;
|
|
info->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
|
|
module_put(info->owner);
|
|
return retval;
|
|
}
|
|
retval = isdn_tty_block_til_ready(tty, filp, info);
|
|
if (retval) {
|
|
#ifdef ISDN_DEBUG_MODEM_OPEN
|
|
printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n");
|
|
#endif
|
|
module_put(info->owner);
|
|
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;
|
|
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) && (info->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", info->count);
|
|
info->count = 1;
|
|
}
|
|
if (--info->count < 0) {
|
|
printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
|
|
info->line, info->count);
|
|
info->count = 0;
|
|
}
|
|
if (info->count) {
|
|
#ifdef ISDN_DEBUG_MODEM_OPEN
|
|
printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
|
|
#endif
|
|
module_put(info->owner);
|
|
return;
|
|
}
|
|
info->flags |= ISDN_ASYNC_CLOSING;
|
|
/*
|
|
* Save the termios structure, since this port may have
|
|
* separate termios for callout and dialin.
|
|
*/
|
|
if (info->flags & ISDN_ASYNC_NORMAL_ACTIVE)
|
|
info->normal_termios = *tty->termios;
|
|
if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
|
|
info->callout_termios = *tty->termios;
|
|
|
|
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 (info->flags & ISDN_ASYNC_INITIALIZED) {
|
|
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);
|
|
info->tty = NULL;
|
|
info->ncarrier = 0;
|
|
tty->closing = 0;
|
|
module_put(info->owner);
|
|
if (info->blocked_open) {
|
|
msleep_interruptible(500);
|
|
wake_up_interruptible(&info->open_wait);
|
|
}
|
|
info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CLOSING);
|
|
wake_up_interruptible(&info->close_wait);
|
|
#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;
|
|
|
|
if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
|
|
return;
|
|
isdn_tty_shutdown(info);
|
|
info->count = 0;
|
|
info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE);
|
|
info->tty = NULL;
|
|
wake_up_interruptible(&info->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 = {
|
|
.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,
|
|
};
|
|
|
|
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 | TTY_DRIVER_DYNAMIC_DEV;
|
|
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
|
|
#ifdef MODULE
|
|
info->owner = THIS_MODULE;
|
|
#endif
|
|
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->tty = NULL;
|
|
info->x_char = 0;
|
|
info->count = 0;
|
|
info->blocked_open = 0;
|
|
init_waitqueue_head(&info->open_wait);
|
|
init_waitqueue_head(&info->close_wait);
|
|
info->isdn_driver = -1;
|
|
info->isdn_channel = -1;
|
|
info->drv_index = -1;
|
|
info->xmit_size = ISDN_SERIAL_XMIT_SIZE;
|
|
init_timer(&info->nc_timer);
|
|
info->nc_timer.function = isdn_tty_modem_do_ncarrier;
|
|
info->nc_timer.data = (unsigned long) info;
|
|
skb_queue_head_init(&info->xmit_queue);
|
|
#ifdef CONFIG_ISDN_AUDIO
|
|
skb_queue_head_init(&info->dtmf_queue);
|
|
#endif
|
|
if (!(info->xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5, GFP_KERNEL))) {
|
|
printk(KERN_ERR "Could not allocate modem xmit-buffer\n");
|
|
retval = -ENOMEM;
|
|
goto err_unregister;
|
|
}
|
|
/* Make room for T.70 header */
|
|
info->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->xmit_buf - 4);
|
|
}
|
|
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->xmit_buf - 4);
|
|
}
|
|
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->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->flags, info->isdn_driver, info->isdn_channel,
|
|
dev->usage[idx]);
|
|
#endif
|
|
if (
|
|
#ifndef FIX_FILE_TRANSFER
|
|
(info->flags & ISDN_ASYNC_NORMAL_ACTIVE) &&
|
|
#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;
|
|
}
|
|
|
|
#define TTY_IS_ACTIVE(info) \
|
|
(info->flags & (ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE))
|
|
|
|
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_IS_ACTIVE(info)) {
|
|
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_IS_ACTIVE(info)) {
|
|
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->blocked_open &&
|
|
(info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
|
|
wake_up_interruptible(&info->open_wait);
|
|
}
|
|
|
|
/* Schedule CONNECT-Message to any tty
|
|
* waiting for it and
|
|
* set DCD-bit of its modem-status.
|
|
*/
|
|
if (TTY_IS_ACTIVE(info) ||
|
|
(info->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_IS_ACTIVE(info)) {
|
|
#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_IS_ACTIVE(info)) {
|
|
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_IS_ACTIVE(info)) {
|
|
isdn_tty_fax_command(info, c);
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_ISDN_AUDIO
|
|
case ISDN_STAT_AUDIO:
|
|
if (TTY_IS_ACTIVE(info)) {
|
|
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_struct *tty;
|
|
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);
|
|
tty = info->tty;
|
|
if ((info->flags & ISDN_ASYNC_CLOSING) || (!tty)) {
|
|
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(tty, 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(tty, 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(tty);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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->flags & ISDN_ASYNC_CLOSING),
|
|
(!info->tty));
|
|
#endif
|
|
m->mdmreg[REG_RINGCNT] = 0;
|
|
del_timer(&info->nc_timer);
|
|
info->ncarrier = 0;
|
|
if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->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->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
|
|
return;
|
|
}
|
|
if ((info->flags & ISDN_ASYNC_CHECK_CD) &&
|
|
(!((info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
|
|
(info->flags & ISDN_ASYNC_CALLOUT_NOHUP)))) {
|
|
tty_hangup(info->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;
|
|
break;
|
|
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]))
|
|
if ((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) {
|
|
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);
|
|
}
|