470 static int mxser_set_baud(struct tty_struct *tty, speed_t newspd)  in mxser_set_baud()  argument
472 	struct mxser_port *info = tty->driver_data;  in mxser_set_baud()
482 		tty_encode_baud_rate(tty, 134, 134);  in mxser_set_baud()
488 		tty_encode_baud_rate(tty, baud, baud);  in mxser_set_baud()
519 	if (C_BAUD(tty) == BOTHER) {  in mxser_set_baud()
536 static void mxser_handle_cts(struct tty_struct *tty, struct mxser_port *info,  in mxser_handle_cts()  argument
541 	if (tty->hw_stopped) {  in mxser_handle_cts()
543 			tty->hw_stopped = 0;  in mxser_handle_cts()
547 			tty_wakeup(tty);  in mxser_handle_cts()
553 	tty->hw_stopped = 1;  in mxser_handle_cts()
562 static void mxser_change_speed(struct tty_struct *tty)  in mxser_change_speed()  argument
564 	struct mxser_port *info = tty->driver_data;  in mxser_change_speed()
567 	cflag = tty->termios.c_cflag;  in mxser_change_speed()
569 	mxser_set_baud(tty, tty_get_baud_rate(tty));  in mxser_change_speed()
636 			mxser_handle_cts(tty, info,  in mxser_change_speed()
650 	if (I_INPCK(tty))  in mxser_change_speed()
652 	if (I_BRKINT(tty) || I_PARMRK(tty))  in mxser_change_speed()
657 	if (I_IGNBRK(tty)) {  in mxser_change_speed()
664 		if (I_IGNPAR(tty)) {  in mxser_change_speed()
676 		mxser_set_must_xon1_value(info->ioaddr, START_CHAR(tty));  in mxser_change_speed()
677 		mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(tty));  in mxser_change_speed()
678 		mxser_must_set_rx_sw_flow_control(info->ioaddr, I_IXON(tty));  in mxser_change_speed()
679 		mxser_must_set_tx_sw_flow_control(info->ioaddr, I_IXOFF(tty));  in mxser_change_speed()
687 static void mxser_check_modem_status(struct tty_struct *tty,  in mxser_check_modem_status()  argument
707 		mxser_handle_cts(tty, port, status);  in mxser_check_modem_status()
710 static int mxser_activate(struct tty_port *port, struct tty_struct *tty)  in mxser_activate()  argument
723 		set_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
750 			set_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
788 	clear_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
794 	mxser_change_speed(tty);  in mxser_activate()
852 static int mxser_open(struct tty_struct *tty, struct file *filp)  in mxser_open()  argument
854 	struct tty_port *tport = tty->port;  in mxser_open()
857 	tty->driver_data = port;  in mxser_open()
859 	return tty_port_open(tport, tty, filp);  in mxser_open()
862 static void mxser_flush_buffer(struct tty_struct *tty)  in mxser_flush_buffer()  argument
864 	struct mxser_port *info = tty->driver_data;  in mxser_flush_buffer()
879 	tty_wakeup(tty);  in mxser_flush_buffer()
917 static void mxser_close(struct tty_struct *tty, struct file *filp)  in mxser_close()  argument
919 	struct mxser_port *info = tty->driver_data;  in mxser_close()
924 	if (tty_port_close_start(port, tty, filp) == 0)  in mxser_close()
929 	mxser_flush_buffer(tty);  in mxser_close()
930 	if (tty_port_initialized(port) && C_HUPCL(tty))  in mxser_close()
938 	tty_port_close_end(port, tty);  in mxser_close()
942 static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)  in mxser_write()  argument
945 	struct mxser_port *info = tty->driver_data;  in mxser_write()
969 	if (info->xmit_cnt && !tty->flow.stopped)  in mxser_write()
970 		if (!tty->hw_stopped || mxser_16550A_or_MUST(info))  in mxser_write()
976 static int mxser_put_char(struct tty_struct *tty, unsigned char ch)  in mxser_put_char()  argument
978 	struct mxser_port *info = tty->driver_data;  in mxser_put_char()
997 static void mxser_flush_chars(struct tty_struct *tty)  in mxser_flush_chars()  argument
999 	struct mxser_port *info = tty->driver_data;  in mxser_flush_chars()
1001 	if (!info->xmit_cnt || tty->flow.stopped || !info->port.xmit_buf ||  in mxser_flush_chars()
1002 			(tty->hw_stopped && !mxser_16550A_or_MUST(info)))  in mxser_flush_chars()
1008 static unsigned int mxser_write_room(struct tty_struct *tty)  in mxser_write_room()  argument
1010 	struct mxser_port *info = tty->driver_data;  in mxser_write_room()
1017 static unsigned int mxser_chars_in_buffer(struct tty_struct *tty)  in mxser_chars_in_buffer()  argument
1019 	struct mxser_port *info = tty->driver_data;  in mxser_chars_in_buffer()
1028 static int mxser_get_serial_info(struct tty_struct *tty,  in mxser_get_serial_info()  argument
1031 	struct mxser_port *info = tty->driver_data;  in mxser_get_serial_info()
1043 	ss->line = tty->index;  in mxser_get_serial_info()
1055 static int mxser_set_serial_info(struct tty_struct *tty,  in mxser_set_serial_info()  argument
1058 	struct mxser_port *info = tty->driver_data;  in mxser_set_serial_info()
1065 	if (tty_io_error(tty))  in mxser_set_serial_info()
1111 			tty_encode_baud_rate(tty, baud, baud);  in mxser_set_serial_info()
1122 			mxser_change_speed(tty);  in mxser_set_serial_info()
1126 		retval = mxser_activate(port, tty);  in mxser_set_serial_info()
1158 static int mxser_tiocmget(struct tty_struct *tty)  in mxser_tiocmget()  argument
1160 	struct mxser_port *info = tty->driver_data;  in mxser_tiocmget()
1164 	if (tty_io_error(tty))  in mxser_tiocmget()
1171 		mxser_check_modem_status(tty, info, status);  in mxser_tiocmget()
1182 static int mxser_tiocmset(struct tty_struct *tty,  in mxser_tiocmset()  argument
1185 	struct mxser_port *info = tty->driver_data;  in mxser_tiocmset()
1188 	if (tty_io_error(tty))  in mxser_tiocmset()
1264 static int mxser_ioctl(struct tty_struct *tty,  in mxser_ioctl()  argument
1267 	struct mxser_port *info = tty->driver_data;  in mxser_ioctl()
1273 		return mxser_ioctl_op_mode(info, tty->index,  in mxser_ioctl()
1276 	if (cmd != TIOCMIWAIT && tty_io_error(tty))  in mxser_ioctl()
1308 static int mxser_get_icount(struct tty_struct *tty,  in mxser_get_icount()  argument
1312 	struct mxser_port *info = tty->driver_data;  in mxser_get_icount()
1334 static void mxser_stoprx(struct tty_struct *tty)  in mxser_stoprx()  argument
1336 	struct mxser_port *info = tty->driver_data;  in mxser_stoprx()
1339 	if (I_IXOFF(tty)) {  in mxser_stoprx()
1344 			info->x_char = STOP_CHAR(tty);  in mxser_stoprx()
1351 	if (C_CRTSCTS(tty)) {  in mxser_stoprx()
1361 static void mxser_throttle(struct tty_struct *tty)  in mxser_throttle()  argument
1363 	mxser_stoprx(tty);  in mxser_throttle()
1366 static void mxser_unthrottle(struct tty_struct *tty)  in mxser_unthrottle()  argument
1368 	struct mxser_port *info = tty->driver_data;  in mxser_unthrottle()
1372 	if (I_IXOFF(tty)) {  in mxser_unthrottle()
1380 				info->x_char = START_CHAR(tty);  in mxser_unthrottle()
1388 	if (C_CRTSCTS(tty)) {  in mxser_unthrottle()
1400 static void mxser_stop(struct tty_struct *tty)  in mxser_stop()  argument
1402 	struct mxser_port *info = tty->driver_data;  in mxser_stop()
1411 static void mxser_start(struct tty_struct *tty)  in mxser_start()  argument
1413 	struct mxser_port *info = tty->driver_data;  in mxser_start()
1422 static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  in mxser_set_termios()  argument
1424 	struct mxser_port *info = tty->driver_data;  in mxser_set_termios()
1428 	mxser_change_speed(tty);  in mxser_set_termios()
1431 	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) {  in mxser_set_termios()
1432 		tty->hw_stopped = 0;  in mxser_set_termios()
1433 		mxser_start(tty);  in mxser_set_termios()
1437 	if ((old_termios->c_iflag & IXON) && !I_IXON(tty)) {  in mxser_set_termios()
1438 		tty->flow.stopped = 0;  in mxser_set_termios()
1446 		mxser_start(tty);  in mxser_set_termios()
1453 static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)  in mxser_wait_until_sent()  argument
1455 	struct mxser_port *info = tty->driver_data;  in mxser_wait_until_sent()
1510 static void mxser_hangup(struct tty_struct *tty)  in mxser_hangup()  argument
1512 	struct mxser_port *info = tty->driver_data;  in mxser_hangup()
1514 	mxser_flush_buffer(tty);  in mxser_hangup()
1521 static int mxser_rs_break(struct tty_struct *tty, int break_state)  in mxser_rs_break()  argument
1523 	struct mxser_port *info = tty->driver_data;  in mxser_rs_break()
1539 static bool mxser_receive_chars_new(struct tty_struct *tty,  in mxser_receive_chars_new()  argument
1558 	if (gdl >= tty->receive_room && !port->ldisc_stop_rx)  in mxser_receive_chars_new()
1559 		mxser_stoprx(tty);  in mxser_receive_chars_new()
1569 static u8 mxser_receive_chars_old(struct tty_struct *tty,  in mxser_receive_chars_old()  argument
1573 	int recv_room = tty->receive_room;  in mxser_receive_chars_old()
1600 						do_SAK(tty);  in mxser_receive_chars_old()
1616 					mxser_stoprx(tty);  in mxser_receive_chars_old()
1631 static u8 mxser_receive_chars(struct tty_struct *tty,  in mxser_receive_chars()  argument
1634 	if (tty->receive_room == 0 && !port->ldisc_stop_rx)  in mxser_receive_chars()
1635 		mxser_stoprx(tty);  in mxser_receive_chars()
1637 	if (!mxser_receive_chars_new(tty, port, status))  in mxser_receive_chars()
1638 		status = mxser_receive_chars_old(tty, port, status);  in mxser_receive_chars()
1645 static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port)  in mxser_transmit_chars()  argument
1659 	if (!port->xmit_cnt || tty->flow.stopped ||  in mxser_transmit_chars()
1660 			(tty->hw_stopped && !mxser_16550A_or_MUST(port))) {  in mxser_transmit_chars()
1678 		tty_wakeup(tty);  in mxser_transmit_chars()
1686 	struct tty_struct *tty;  in mxser_port_isr()  local
1695 	tty = tty_port_tty_get(&port->port);  in mxser_port_isr()
1696 	if (!tty || port->closing || !tty_port_initialized(&port->port)) {  in mxser_port_isr()
1714 			status = mxser_receive_chars(tty, port, status);  in mxser_port_isr()
1718 			status = mxser_receive_chars(tty, port, status);  in mxser_port_isr()
1723 		mxser_check_modem_status(tty, port, msr);  in mxser_port_isr()
1727 			mxser_transmit_chars(tty, port);  in mxser_port_isr()
1730 			mxser_transmit_chars(tty, port);  in mxser_port_isr()
1734 	tty_kref_put(tty);  in mxser_port_isr()