160 static void rs_throttle(struct tty_struct * tty);
161 static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
162 static int rs_write(struct tty_struct *tty,
165 static int e100_write_rs485(struct tty_struct *tty,
951 	tcflag_t cflags = info->port.tty->termios.c_cflag;  in update_char_time()
1363 e100_enable_rs485(struct tty_struct *tty, struct serial_rs485 *r)  in e100_enable_rs485()  argument
1365 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in e100_enable_rs485()
1397 e100_write_rs485(struct tty_struct *tty,  in e100_write_rs485()  argument
1400 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in e100_write_rs485()
1410 	count = rs_write(tty, buf, count);  in e100_write_rs485()
1442 rs_stop(struct tty_struct *tty)  in rs_stop()  argument
1444 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_stop()
1455 				STOP_CHAR(info->port.tty));  in rs_stop()
1457 		if (tty->termios.c_iflag & IXON ) {  in rs_stop()
1467 rs_start(struct tty_struct *tty)  in rs_start()  argument
1469 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_start()
1478 		xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(tty));  in rs_start()
1480 		if (tty->termios.c_iflag & IXON ) {  in rs_start()
1791 			if (info->port.tty->stopped) {  in handle_all_descr_data()
1810 	struct tty_struct *tty;  in receive_chars_dma()  local
1818 	tty = info->port.tty;  in receive_chars_dma()
1819 	if (!tty) /* Something wrong... */  in receive_chars_dma()
2445 		if (info->port.tty->stopped)  in handle_ser_tx_interrupt()
2446 			rs_stop(info->port.tty);  in handle_ser_tx_interrupt()
2459 	    || info->port.tty->stopped) {  in handle_ser_tx_interrupt()
2461 				info->port.tty->stopped));  in handle_ser_tx_interrupt()
2619 	struct tty_struct	*tty;  in do_softint()  local
2623 	tty = info->port.tty;  in do_softint()
2624 	if (!tty)  in do_softint()
2628 		tty_wakeup(tty);  in do_softint()
2704 	if (info->port.tty)  in startup()
2705 		clear_bit(TTY_IO_ERROR, &info->port.tty->flags);  in startup()
2814 	if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {  in shutdown()
2820 	if (info->port.tty)  in shutdown()
2821 		set_bit(TTY_IO_ERROR, &info->port.tty->flags);  in shutdown()
2838 	if (!info->port.tty)  in change_speed()
2843 	cflag = info->port.tty->termios.c_cflag;  in change_speed()
2966 	xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(info->port.tty));  in change_speed()
2968 	if (info->port.tty->termios.c_iflag & IXON ) {  in change_speed()
2970 				STOP_CHAR(info->port.tty)));  in change_speed()
2984 rs_flush_chars(struct tty_struct *tty)  in rs_flush_chars()  argument
2986 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_flush_chars()
2991 	    tty->stopped ||  in rs_flush_chars()
3006 static int rs_raw_write(struct tty_struct *tty,  in rs_raw_write()  argument
3010 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_raw_write()
3026 	DFLOW(DEBUG_LOG(info->line, "ldisc %i\n", tty->ldisc.chars_in_buffer(tty)));  in rs_raw_write()
3063 	    !tty->stopped &&  in rs_raw_write()
3072 rs_write(struct tty_struct *tty,  in rs_write()  argument
3076 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_write()
3098 	count = rs_raw_write(tty, buf, count);  in rs_write()
3112 		tty_wait_until_sent(tty, 0);  in rs_write()
3138 rs_write_room(struct tty_struct *tty)  in rs_write_room()  argument
3140 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_write_room()
3151 rs_chars_in_buffer(struct tty_struct *tty)  in rs_chars_in_buffer()  argument
3153 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_chars_in_buffer()
3161 rs_flush_buffer(struct tty_struct *tty)  in rs_flush_buffer()  argument
3163 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_flush_buffer()
3170 	tty_wakeup(tty);  in rs_flush_buffer()
3182 static void rs_send_xchar(struct tty_struct *tty, char ch)  in rs_send_xchar()  argument
3184 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_send_xchar()
3196 	if (tty->stopped)  in rs_send_xchar()
3197 		rs_start(tty);  in rs_send_xchar()
3215 rs_throttle(struct tty_struct * tty)  in rs_throttle()  argument
3217 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_throttle()
3221 	printk("throttle %s: %lu....\n", tty_name(tty, buf),  in rs_throttle()
3222 	       (unsigned long)tty->ldisc.chars_in_buffer(tty));  in rs_throttle()
3224 	DFLOW(DEBUG_LOG(info->line,"rs_throttle %lu\n", tty->ldisc.chars_in_buffer(tty)));  in rs_throttle()
3227 	if (tty->termios.c_cflag & CRTSCTS) {  in rs_throttle()
3231 	if (I_IXOFF(tty))  in rs_throttle()
3232 		rs_send_xchar(tty, STOP_CHAR(tty));  in rs_throttle()
3237 rs_unthrottle(struct tty_struct * tty)  in rs_unthrottle()  argument
3239 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_unthrottle()
3243 	printk("unthrottle %s: %lu....\n", tty_name(tty, buf),  in rs_unthrottle()
3244 	       (unsigned long)tty->ldisc.chars_in_buffer(tty));  in rs_unthrottle()
3246 	DFLOW(DEBUG_LOG(info->line,"rs_unthrottle ldisc %d\n", tty->ldisc.chars_in_buffer(tty)));  in rs_unthrottle()
3247 	DFLOW(DEBUG_LOG(info->line,"rs_unthrottle flip.count: %i\n", tty->flip.count));  in rs_unthrottle()
3249 	if (tty->termios.c_cflag & CRTSCTS) {  in rs_unthrottle()
3254 	if (I_IXOFF(tty)) {  in rs_unthrottle()
3258 			rs_send_xchar(tty, START_CHAR(tty));  in rs_unthrottle()
3414 rs_break(struct tty_struct *tty, int break_state)  in rs_break()  argument
3416 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_break()
3437 rs_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear)  in rs_tiocmset()  argument
3439 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_tiocmset()
3469 rs_tiocmget(struct tty_struct *tty)  in rs_tiocmget()  argument
3471 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_tiocmget()
3503 rs_ioctl(struct tty_struct *tty,  in rs_ioctl()  argument
3506 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in rs_ioctl()
3511 		if (tty->flags & (1 << TTY_IO_ERROR))  in rs_ioctl()
3565 		return e100_enable_rs485(tty, &rs485data);  in rs_ioctl()
3577 		return e100_enable_rs485(tty, &rs485data);  in rs_ioctl()
3583 			&(((struct e100_serial *)tty->driver_data)->rs485);  in rs_ioctl()
3599 		return e100_write_rs485(tty, rs485wr.outc, rs485wr.outc_size);  in rs_ioctl()
3610 rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  in rs_set_termios()  argument
3612 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_set_termios()
3618 	    !(tty->termios.c_cflag & CRTSCTS))  in rs_set_termios()
3619 		rs_start(tty);  in rs_set_termios()
3634 rs_close(struct tty_struct *tty, struct file * filp)  in rs_close()  argument
3636 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in rs_close()
3655 	if ((tty->count == 1) && (info->port.count != 1)) {  in rs_close()
3682 	tty->closing = 1;  in rs_close()
3684 		tty_wait_until_sent(tty, info->port.closing_wait);  in rs_close()
3702 		rs_wait_until_sent(tty, HZ);  in rs_close()
3706 	rs_flush_buffer(tty);  in rs_close()
3707 	tty_ldisc_flush(tty);  in rs_close()
3708 	tty->closing = 0;  in rs_close()
3710 	info->port.tty = NULL;  in rs_close()
3767 static void rs_wait_until_sent(struct tty_struct *tty, int timeout)  in rs_wait_until_sent()  argument
3770 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;  in rs_wait_until_sent()
3803 rs_hangup(struct tty_struct *tty)  in rs_hangup()  argument
3805 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;  in rs_hangup()
3807 	rs_flush_buffer(tty);  in rs_hangup()
3812 	info->port.tty = NULL;  in rs_hangup()
3822 block_til_ready(struct tty_struct *tty, struct file * filp,  in block_til_ready()  argument
3835 		wait_event_interruptible_tty(tty, info->port.close_wait,  in block_til_ready()
3852 	    (tty->flags & (1 << TTY_IO_ERROR))) {  in block_til_ready()
3857 	if (tty->termios.c_cflag & CLOCAL) {  in block_til_ready()
3908 		tty_unlock(tty);  in block_til_ready()
3910 		tty_lock(tty);  in block_til_ready()
3945 rs_open(struct tty_struct *tty, struct file * filp)  in rs_open()  argument
3951 	info = rs_table + tty->index;  in rs_open()
3956         printk("[%d] rs_open %s, count = %d\n", current->pid, tty->name,  in rs_open()
3961 	tty->driver_data = info;  in rs_open()
3962 	info->port.tty = tty;  in rs_open()
3970 		wait_event_interruptible_tty(tty, info->port.close_wait,  in rs_open()
4061 	retval = block_til_ready(tty, filp, info);  in rs_open()
4117 	if (info->port.tty) {  in seq_line_info()
4118 		if (info->port.tty->stopped)  in seq_line_info()
4120 				   (int)info->port.tty->stopped);  in seq_line_info()
4311 		info->port.tty = NULL;  in rs_init()