156 static void rs_throttle(struct tty_struct * tty);
157 static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
158 static int rs_write(struct tty_struct *tty,
161 static int e100_write_rs485(struct tty_struct *tty,
920 	tcflag_t cflags = info->port.tty->termios.c_cflag;  in update_char_time()
1332 e100_enable_rs485(struct tty_struct *tty, struct serial_rs485 *r)  in e100_enable_rs485()  argument
1334 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in e100_enable_rs485()
1356 e100_write_rs485(struct tty_struct *tty,  in e100_write_rs485()  argument
1359 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in e100_write_rs485()
1369 	count = rs_write(tty, buf, count);  in e100_write_rs485()
1401 rs_stop(struct tty_struct *tty)  in rs_stop()  argument
1403 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_stop()
1414 				STOP_CHAR(info->port.tty));  in rs_stop()
1416 		if (tty->termios.c_iflag & IXON ) {  in rs_stop()
1426 rs_start(struct tty_struct *tty)  in rs_start()  argument
1428 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_start()
1437 		xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(tty));  in rs_start()
1439 		if (tty->termios.c_iflag & IXON ) {  in rs_start()
1753 			if (info->port.tty->stopped) {  in handle_all_descr_data()
1772 	struct tty_struct *tty;  in receive_chars_dma()  local
1780 	tty = info->port.tty;  in receive_chars_dma()
1781 	if (!tty) /* Something wrong... */  in receive_chars_dma()
2403 		if (info->port.tty->stopped)  in handle_ser_tx_interrupt()
2404 			rs_stop(info->port.tty);  in handle_ser_tx_interrupt()
2417 	    || info->port.tty->stopped) {  in handle_ser_tx_interrupt()
2419 				info->port.tty->stopped));  in handle_ser_tx_interrupt()
2577 	struct tty_struct	*tty;  in do_softint()  local
2581 	tty = info->port.tty;  in do_softint()
2582 	if (!tty)  in do_softint()
2586 		tty_wakeup(tty);  in do_softint()
2662 	if (info->port.tty)  in startup()
2663 		clear_bit(TTY_IO_ERROR, &info->port.tty->flags);  in startup()
2772 	if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {  in shutdown()
2778 	if (info->port.tty)  in shutdown()
2779 		set_bit(TTY_IO_ERROR, &info->port.tty->flags);  in shutdown()
2796 	if (!info->port.tty)  in change_speed()
2801 	cflag = info->port.tty->termios.c_cflag;  in change_speed()
2911 	xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(info->port.tty));  in change_speed()
2913 	if (info->port.tty->termios.c_iflag & IXON ) {  in change_speed()
2915 				STOP_CHAR(info->port.tty)));  in change_speed()
2929 rs_flush_chars(struct tty_struct *tty)  in rs_flush_chars()  argument
2931 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_flush_chars()
2936 	    tty->stopped ||  in rs_flush_chars()
2951 static int rs_raw_write(struct tty_struct *tty,  in rs_raw_write()  argument
2955 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_raw_write()
2971 	DFLOW(DEBUG_LOG(info->line, "ldisc %i\n", tty->ldisc.chars_in_buffer(tty)));  in rs_raw_write()
3008 	    !tty->stopped &&  in rs_raw_write()
3017 rs_write(struct tty_struct *tty,  in rs_write()  argument
3021 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_write()
3043 	count = rs_raw_write(tty, buf, count);  in rs_write()
3057 		tty_wait_until_sent(tty, 0);  in rs_write()
3083 rs_write_room(struct tty_struct *tty)  in rs_write_room()  argument
3085 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_write_room()
3096 rs_chars_in_buffer(struct tty_struct *tty)  in rs_chars_in_buffer()  argument
3098 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_chars_in_buffer()
3106 rs_flush_buffer(struct tty_struct *tty)  in rs_flush_buffer()  argument
3108 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_flush_buffer()
3115 	tty_wakeup(tty);  in rs_flush_buffer()
3127 static void rs_send_xchar(struct tty_struct *tty, char ch)  in rs_send_xchar()  argument
3129 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_send_xchar()
3141 	if (tty->stopped)  in rs_send_xchar()
3142 		rs_start(tty);  in rs_send_xchar()
3160 rs_throttle(struct tty_struct * tty)  in rs_throttle()  argument
3162 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_throttle()
3164 	printk("throttle %s: %lu....\n", tty_name(tty),  in rs_throttle()
3165 	       (unsigned long)tty->ldisc.chars_in_buffer(tty));  in rs_throttle()
3167 	DFLOW(DEBUG_LOG(info->line,"rs_throttle %lu\n", tty->ldisc.chars_in_buffer(tty)));  in rs_throttle()
3170 	if (tty->termios.c_cflag & CRTSCTS) {  in rs_throttle()
3174 	if (I_IXOFF(tty))  in rs_throttle()
3175 		rs_send_xchar(tty, STOP_CHAR(tty));  in rs_throttle()
3180 rs_unthrottle(struct tty_struct * tty)  in rs_unthrottle()  argument
3182 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_unthrottle()
3184 	printk("unthrottle %s: %lu....\n", tty_name(tty),  in rs_unthrottle()
3185 	       (unsigned long)tty->ldisc.chars_in_buffer(tty));  in rs_unthrottle()
3187 	DFLOW(DEBUG_LOG(info->line,"rs_unthrottle ldisc %d\n", tty->ldisc.chars_in_buffer(tty)));  in rs_unthrottle()
3188 	DFLOW(DEBUG_LOG(info->line,"rs_unthrottle flip.count: %i\n", tty->flip.count));  in rs_unthrottle()
3190 	if (tty->termios.c_cflag & CRTSCTS) {  in rs_unthrottle()
3195 	if (I_IXOFF(tty)) {  in rs_unthrottle()
3199 			rs_send_xchar(tty, START_CHAR(tty));  in rs_unthrottle()
3355 rs_break(struct tty_struct *tty, int break_state)  in rs_break()  argument
3357 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_break()
3378 rs_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear)  in rs_tiocmset()  argument
3380 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_tiocmset()
3410 rs_tiocmget(struct tty_struct *tty)  in rs_tiocmget()  argument
3412 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_tiocmget()
3444 rs_ioctl(struct tty_struct *tty,  in rs_ioctl()  argument
3447 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in rs_ioctl()
3452 		if (tty->flags & (1 << TTY_IO_ERROR))  in rs_ioctl()
3506 		return e100_enable_rs485(tty, &rs485data);  in rs_ioctl()
3518 		return e100_enable_rs485(tty, &rs485data);  in rs_ioctl()
3524 			&(((struct e100_serial *)tty->driver_data)->rs485);  in rs_ioctl()
3540 		return e100_write_rs485(tty, rs485wr.outc, rs485wr.outc_size);  in rs_ioctl()
3551 rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  in rs_set_termios()  argument
3553 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_set_termios()
3559 	    !(tty->termios.c_cflag & CRTSCTS))  in rs_set_termios()
3560 		rs_start(tty);  in rs_set_termios()
3575 rs_close(struct tty_struct *tty, struct file * filp)  in rs_close()  argument
3577 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in rs_close()
3596 	if ((tty->count == 1) && (info->port.count != 1)) {  in rs_close()
3623 	tty->closing = 1;  in rs_close()
3625 		tty_wait_until_sent(tty, info->port.closing_wait);  in rs_close()
3643 		rs_wait_until_sent(tty, HZ);  in rs_close()
3647 	rs_flush_buffer(tty);  in rs_close()
3648 	tty_ldisc_flush(tty);  in rs_close()
3649 	tty->closing = 0;  in rs_close()
3651 	info->port.tty = NULL;  in rs_close()
3697 static void rs_wait_until_sent(struct tty_struct *tty, int timeout)  in rs_wait_until_sent()  argument
3700 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_wait_until_sent()
3733 rs_hangup(struct tty_struct *tty)  in rs_hangup()  argument
3735 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in rs_hangup()
3737 	rs_flush_buffer(tty);  in rs_hangup()
3742 	info->port.tty = NULL;  in rs_hangup()
3752 block_til_ready(struct tty_struct *tty, struct file * filp,  in block_til_ready()  argument
3765 	    (tty->flags & (1 << TTY_IO_ERROR))) {  in block_til_ready()
3770 	if (tty->termios.c_cflag & CLOCAL) {  in block_til_ready()
3821 		tty_unlock(tty);  in block_til_ready()
3823 		tty_lock(tty);  in block_til_ready()
3858 rs_open(struct tty_struct *tty, struct file * filp)  in rs_open()  argument
3864 	info = rs_table + tty->index;  in rs_open()
3869         printk("[%d] rs_open %s, count = %d\n", current->pid, tty->name,  in rs_open()
3874 	tty->driver_data = info;  in rs_open()
3875 	info->port.tty = tty;  in rs_open()
3960 	retval = block_til_ready(tty, filp, info);  in rs_open()
4016 	if (info->port.tty) {  in seq_line_info()
4017 		if (info->port.tty->stopped)  in seq_line_info()
4019 				   (int)info->port.tty->stopped);  in seq_line_info()
4201 		info->port.tty = NULL;  in rs_init()