571 static int mxser_set_baud(struct tty_struct *tty, long newspd)  in mxser_set_baud()  argument
573 	struct mxser_port *info = tty->driver_data;  in mxser_set_baud()
585 		tty_encode_baud_rate(tty, 134, 134);  in mxser_set_baud()
591 		tty_encode_baud_rate(tty, baud, baud);  in mxser_set_baud()
617 	if (C_BAUD(tty) == BOTHER) {  in mxser_set_baud()
638 static int mxser_change_speed(struct tty_struct *tty,  in mxser_change_speed()  argument
641 	struct mxser_port *info = tty->driver_data;  in mxser_change_speed()
646 	cflag = tty->termios.c_cflag;  in mxser_change_speed()
650 	if (mxser_set_baud_method[tty->index] == 0)  in mxser_change_speed()
651 		mxser_set_baud(tty, tty_get_baud_rate(tty));  in mxser_change_speed()
720 			if (tty->hw_stopped) {  in mxser_change_speed()
722 					tty->hw_stopped = 0;  in mxser_change_speed()
732 					tty_wakeup(tty);  in mxser_change_speed()
736 					tty->hw_stopped = 1;  in mxser_change_speed()
762 	if (I_INPCK(tty))  in mxser_change_speed()
764 	if (I_BRKINT(tty) || I_PARMRK(tty))  in mxser_change_speed()
769 	if (I_IGNBRK(tty)) {  in mxser_change_speed()
776 		if (I_IGNPAR(tty)) {  in mxser_change_speed()
788 		mxser_set_must_xon1_value(info->ioaddr, START_CHAR(tty));  in mxser_change_speed()
789 		mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(tty));  in mxser_change_speed()
790 		if (I_IXON(tty)) {  in mxser_change_speed()
797 		if (I_IXOFF(tty)) {  in mxser_change_speed()
813 static void mxser_check_modem_status(struct tty_struct *tty,  in mxser_check_modem_status()  argument
834 		if (tty->hw_stopped) {  in mxser_check_modem_status()
836 				tty->hw_stopped = 0;  in mxser_check_modem_status()
846 				tty_wakeup(tty);  in mxser_check_modem_status()
850 				tty->hw_stopped = 1;  in mxser_check_modem_status()
862 static int mxser_activate(struct tty_port *port, struct tty_struct *tty)  in mxser_activate()  argument
875 		set_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
902 			set_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
940 	clear_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
946 	mxser_change_speed(tty, NULL);  in mxser_activate()
1004 static int mxser_open(struct tty_struct *tty, struct file *filp)  in mxser_open()  argument
1009 	line = tty->index;  in mxser_open()
1016 	tty->driver_data = info;  in mxser_open()
1017 	return tty_port_open(&info->port, tty, filp);  in mxser_open()
1020 static void mxser_flush_buffer(struct tty_struct *tty)  in mxser_flush_buffer()  argument
1022 	struct mxser_port *info = tty->driver_data;  in mxser_flush_buffer()
1037 	tty_wakeup(tty);  in mxser_flush_buffer()
1075 static void mxser_close(struct tty_struct *tty, struct file *filp)  in mxser_close()  argument
1077 	struct mxser_port *info = tty->driver_data;  in mxser_close()
1080 	if (tty->index == MXSER_PORTS || info == NULL)  in mxser_close()
1082 	if (tty_port_close_start(port, tty, filp) == 0)  in mxser_close()
1086 	mxser_flush_buffer(tty);  in mxser_close()
1088 		if (C_HUPCL(tty))  in mxser_close()
1096 	tty_port_close_end(port, tty);  in mxser_close()
1100 static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)  in mxser_write()  argument
1103 	struct mxser_port *info = tty->driver_data;  in mxser_write()
1127 	if (info->xmit_cnt && !tty->stopped) {  in mxser_write()
1128 		if (!tty->hw_stopped ||  in mxser_write()
1142 static int mxser_put_char(struct tty_struct *tty, unsigned char ch)  in mxser_put_char()  argument
1144 	struct mxser_port *info = tty->driver_data;  in mxser_put_char()
1158 	if (!tty->stopped) {  in mxser_put_char()
1159 		if (!tty->hw_stopped ||  in mxser_put_char()
1173 static void mxser_flush_chars(struct tty_struct *tty)  in mxser_flush_chars()  argument
1175 	struct mxser_port *info = tty->driver_data;  in mxser_flush_chars()
1178 	if (info->xmit_cnt <= 0 || tty->stopped || !info->port.xmit_buf ||  in mxser_flush_chars()
1179 			(tty->hw_stopped && info->type != PORT_16550A &&  in mxser_flush_chars()
1192 static int mxser_write_room(struct tty_struct *tty)  in mxser_write_room()  argument
1194 	struct mxser_port *info = tty->driver_data;  in mxser_write_room()
1201 static int mxser_chars_in_buffer(struct tty_struct *tty)  in mxser_chars_in_buffer()  argument
1203 	struct mxser_port *info = tty->driver_data;  in mxser_chars_in_buffer()
1212 static int mxser_get_serial_info(struct tty_struct *tty,  in mxser_get_serial_info()  argument
1215 	struct mxser_port *info = tty->driver_data;  in mxser_get_serial_info()
1218 		.line = tty->index,  in mxser_get_serial_info()
1233 static int mxser_set_serial_info(struct tty_struct *tty,  in mxser_set_serial_info()  argument
1236 	struct mxser_port *info = tty->driver_data;  in mxser_set_serial_info()
1279 			tty_encode_baud_rate(tty, baud, baud);  in mxser_set_serial_info()
1290 			mxser_change_speed(tty, NULL);  in mxser_set_serial_info()
1294 		retval = mxser_activate(port, tty);  in mxser_set_serial_info()
1325 static int mxser_tiocmget(struct tty_struct *tty)  in mxser_tiocmget()  argument
1327 	struct mxser_port *info = tty->driver_data;  in mxser_tiocmget()
1332 	if (tty->index == MXSER_PORTS)  in mxser_tiocmget()
1334 	if (test_bit(TTY_IO_ERROR, &tty->flags))  in mxser_tiocmget()
1342 		mxser_check_modem_status(tty, info, status);  in mxser_tiocmget()
1352 static int mxser_tiocmset(struct tty_struct *tty,  in mxser_tiocmset()  argument
1355 	struct mxser_port *info = tty->driver_data;  in mxser_tiocmset()
1359 	if (tty->index == MXSER_PORTS)  in mxser_tiocmset()
1361 	if (test_bit(TTY_IO_ERROR, &tty->flags))  in mxser_tiocmset()
1488 	struct tty_struct *tty;  in mxser_ioctl_special()  local
1525 				tty = tty_port_tty_get(port);  in mxser_ioctl_special()
1527 				if (!tty)  in mxser_ioctl_special()
1530 					ms.cflag = tty->termios.c_cflag;  in mxser_ioctl_special()
1531 				tty_kref_put(tty);  in mxser_ioctl_special()
1594 				tty = tty_port_tty_get(&ip->port);  in mxser_ioctl_special()
1596 				if (!tty) {  in mxser_ioctl_special()
1601 					cflag = tty->termios.c_cflag;  in mxser_ioctl_special()
1602 					iflag = tty->termios.c_iflag;  in mxser_ioctl_special()
1603 					me->baudrate[p] = tty_get_baud_rate(tty);  in mxser_ioctl_special()
1605 				tty_kref_put(tty);  in mxser_ioctl_special()
1663 static int mxser_ioctl(struct tty_struct *tty,  in mxser_ioctl()  argument
1666 	struct mxser_port *info = tty->driver_data;  in mxser_ioctl()
1673 	if (tty->index == MXSER_PORTS)  in mxser_ioctl()
1686 		p = tty->index % 4;  in mxser_ioctl()
1716 			test_bit(TTY_IO_ERROR, &tty->flags))  in mxser_ioctl()
1722 		retval = mxser_get_serial_info(tty, argp);  in mxser_ioctl()
1727 		retval = mxser_set_serial_info(tty, argp);  in mxser_ioctl()
1757 		len = mxser_chars_in_buffer(tty);  in mxser_ioctl()
1769 		status = mxser_get_msr(info->ioaddr, 1, tty->index);  in mxser_ioctl()
1770 		mxser_check_modem_status(tty, info, status);  in mxser_ioctl()
1785 		if (tty->hw_stopped)  in mxser_ioctl()
1808 		mxser_set_baud_method[tty->index] = method;  in mxser_ioctl()
1824 static int mxser_get_icount(struct tty_struct *tty,  in mxser_get_icount()  argument
1828 	struct mxser_port *info = tty->driver_data;  in mxser_get_icount()
1850 static void mxser_stoprx(struct tty_struct *tty)  in mxser_stoprx()  argument
1852 	struct mxser_port *info = tty->driver_data;  in mxser_stoprx()
1855 	if (I_IXOFF(tty)) {  in mxser_stoprx()
1860 			info->x_char = STOP_CHAR(tty);  in mxser_stoprx()
1867 	if (tty->termios.c_cflag & CRTSCTS) {  in mxser_stoprx()
1877 static void mxser_throttle(struct tty_struct *tty)  in mxser_throttle()  argument
1879 	mxser_stoprx(tty);  in mxser_throttle()
1882 static void mxser_unthrottle(struct tty_struct *tty)  in mxser_unthrottle()  argument
1884 	struct mxser_port *info = tty->driver_data;  in mxser_unthrottle()
1888 	if (I_IXOFF(tty)) {  in mxser_unthrottle()
1896 				info->x_char = START_CHAR(tty);  in mxser_unthrottle()
1904 	if (tty->termios.c_cflag & CRTSCTS) {  in mxser_unthrottle()
1916 static void mxser_stop(struct tty_struct *tty)  in mxser_stop()  argument
1918 	struct mxser_port *info = tty->driver_data;  in mxser_stop()
1929 static void mxser_start(struct tty_struct *tty)  in mxser_start()  argument
1931 	struct mxser_port *info = tty->driver_data;  in mxser_start()
1943 static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  in mxser_set_termios()  argument
1945 	struct mxser_port *info = tty->driver_data;  in mxser_set_termios()
1949 	mxser_change_speed(tty, old_termios);  in mxser_set_termios()
1953 			!(tty->termios.c_cflag & CRTSCTS)) {  in mxser_set_termios()
1954 		tty->hw_stopped = 0;  in mxser_set_termios()
1955 		mxser_start(tty);  in mxser_set_termios()
1960 			!(tty->termios.c_iflag & IXON)) {  in mxser_set_termios()
1961 		tty->stopped = 0;  in mxser_set_termios()
1970 		mxser_start(tty);  in mxser_set_termios()
1977 static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)  in mxser_wait_until_sent()  argument
1979 	struct mxser_port *info = tty->driver_data;  in mxser_wait_until_sent()
2034 static void mxser_hangup(struct tty_struct *tty)  in mxser_hangup()  argument
2036 	struct mxser_port *info = tty->driver_data;  in mxser_hangup()
2038 	mxser_flush_buffer(tty);  in mxser_hangup()
2045 static int mxser_rs_break(struct tty_struct *tty, int break_state)  in mxser_rs_break()  argument
2047 	struct mxser_port *info = tty->driver_data;  in mxser_rs_break()
2061 static void mxser_receive_chars(struct tty_struct *tty,  in mxser_receive_chars()  argument
2070 	recv_room = tty->receive_room;  in mxser_receive_chars()
2072 		mxser_stoprx(tty);  in mxser_receive_chars()
2089 				mxser_stoprx(tty);  in mxser_receive_chars()
2119 						do_SAK(tty);  in mxser_receive_chars()
2136 					mxser_stoprx(tty);  in mxser_receive_chars()
2149 	mxvar_log.rxcnt[tty->index] += cnt;  in mxser_receive_chars()
2163 static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port)  in mxser_transmit_chars()  argument
2170 		mxvar_log.txcnt[tty->index]++;  in mxser_transmit_chars()
2180 	if (port->xmit_cnt <= 0 || tty->stopped ||  in mxser_transmit_chars()
2181 			(tty->hw_stopped &&  in mxser_transmit_chars()
2198 	mxvar_log.txcnt[tty->index] += (cnt - port->xmit_cnt);  in mxser_transmit_chars()
2205 		tty_wakeup(tty);  in mxser_transmit_chars()
2224 	struct tty_struct *tty;  in mxser_interrupt()  local
2257 				tty = tty_port_tty_get(&port->port);  in mxser_interrupt()
2258 				if (!tty ||  in mxser_interrupt()
2265 					tty_kref_put(tty);  in mxser_interrupt()
2286 						mxser_receive_chars(tty, port,  in mxser_interrupt()
2292 						mxser_receive_chars(tty, port,  in mxser_interrupt()
2297 					mxser_check_modem_status(tty, port, msr);  in mxser_interrupt()
2302 						mxser_transmit_chars(tty, port);  in mxser_interrupt()
2305 						mxser_transmit_chars(tty, port);  in mxser_interrupt()
2307 				tty_kref_put(tty);  in mxser_interrupt()