204 	struct tty_port		port;  member
267 static void raise_dtr(struct isi_port *port)  in raise_dtr()  argument
269 	struct isi_board *card = port->card;  in raise_dtr()
271 	u16 channel = port->channel;  in raise_dtr()
279 	port->status |= ISI_DTR;  in raise_dtr()
283 static inline void drop_dtr(struct isi_port *port)  in drop_dtr()  argument
285 	struct isi_board *card = port->card;  in drop_dtr()
287 	u16 channel = port->channel;  in drop_dtr()
295 	port->status &= ~ISI_DTR;  in drop_dtr()
299 static inline void raise_rts(struct isi_port *port)  in raise_rts()  argument
301 	struct isi_board *card = port->card;  in raise_rts()
303 	u16 channel = port->channel;  in raise_rts()
311 	port->status |= ISI_RTS;  in raise_rts()
315 static inline void drop_rts(struct isi_port *port)  in drop_rts()  argument
317 	struct isi_board *card = port->card;  in drop_rts()
319 	u16 channel = port->channel;  in drop_rts()
327 	port->status &= ~ISI_RTS;  in drop_rts()
332 static void isicom_dtr_rts(struct tty_port *port, int on)  in isicom_dtr_rts()  argument
334 	struct isi_port *ip = container_of(port, struct isi_port, port);  in isicom_dtr_rts()
357 static void drop_dtr_rts(struct isi_port *port)  in drop_dtr_rts()  argument
359 	struct isi_board *card = port->card;  in drop_dtr_rts()
361 	u16 channel = port->channel;  in drop_dtr_rts()
369 	port->status &= ~(ISI_RTS | ISI_DTR);  in drop_dtr_rts()
377 static inline int __isicom_paranoia_check(struct isi_port const *port,  in __isicom_paranoia_check()  argument
380 	if (!port) {  in __isicom_paranoia_check()
385 	if (port->magic != ISICOM_MAGIC) {  in __isicom_paranoia_check()
407 	struct isi_port *port;  in isicom_tx()  local
423 	port = isi_card[card].ports;  in isicom_tx()
435 	tty = tty_port_tty_get(&port->port);  in isicom_tx()
439 	for (; count > 0; count--, port++) {  in isicom_tx()
441 		if (!(port->port.flags & ASYNC_INITIALIZED) ||  in isicom_tx()
442 				!(port->status & ISI_TXOK))  in isicom_tx()
445 		txcount = min_t(short, TX_SIZE, port->xmit_cnt);  in isicom_tx()
449 		if (!(inw(base + 0x02) & (1 << port->channel)))  in isicom_tx()
453 			 txcount, port->channel + 1);  in isicom_tx()
454 		outw((port->channel << isi_card[card].shift_count) | txcount,  in isicom_tx()
460 					- port->xmit_tail));  in isicom_tx()
464 					wrd |= (port->port.xmit_buf[port->xmit_tail]  in isicom_tx()
466 					port->xmit_tail = (port->xmit_tail + 1)  in isicom_tx()
468 					port->xmit_cnt--;  in isicom_tx()
480 			outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);  in isicom_tx()
481 			port->xmit_tail = (port->xmit_tail  in isicom_tx()
484 			port->xmit_cnt -= (word_count << 1);  in isicom_tx()
487 				wrd = port->port.xmit_buf[port->xmit_tail];  in isicom_tx()
488 				port->xmit_tail = (port->xmit_tail + 1)  in isicom_tx()
490 				port->xmit_cnt--;  in isicom_tx()
496 		if (port->xmit_cnt <= 0)  in isicom_tx()
497 			port->status &= ~ISI_TXOK;  in isicom_tx()
498 		if (port->xmit_cnt <= WAKEUP_CHARS)  in isicom_tx()
518 	struct isi_port *port;  in isicom_interrupt()  local
555 	port = card->ports + channel;  in isicom_interrupt()
556 	if (!(port->port.flags & ASYNC_INITIALIZED)) {  in isicom_interrupt()
562 	tty = tty_port_tty_get(&port->port);  in isicom_interrupt()
580 			if (port->port.flags & ASYNC_CHECK_CD) {  in isicom_interrupt()
581 				if (port->status & ISI_DCD) {  in isicom_interrupt()
586 						port->status &= ~ISI_DCD;  in isicom_interrupt()
593 					port->status |= ISI_DCD;  in isicom_interrupt()
594 					wake_up_interruptible(&port->port.open_wait);  in isicom_interrupt()
598 					port->status |= ISI_DCD;  in isicom_interrupt()
600 					port->status &= ~ISI_DCD;  in isicom_interrupt()
603 			if (tty_port_cts_enabled(&port->port)) {  in isicom_interrupt()
608 						port->status |= (ISI_TXOK  in isicom_interrupt()
615 					port->status &= ~(ISI_TXOK | ISI_CTS);  in isicom_interrupt()
619 					port->status |= ISI_CTS;  in isicom_interrupt()
621 					port->status &= ~ISI_CTS;  in isicom_interrupt()
625 				port->status |= ISI_DSR;  in isicom_interrupt()
627 				port->status &= ~ISI_DSR;  in isicom_interrupt()
630 				port->status |= ISI_RI;  in isicom_interrupt()
632 				port->status &= ~ISI_RI;  in isicom_interrupt()
637 			tty_insert_flip_char(&port->port, 0, TTY_BREAK);  in isicom_interrupt()
638 			if (port->port.flags & ASYNC_SAK)  in isicom_interrupt()
640 			tty_flip_buffer_push(&port->port);  in isicom_interrupt()
653 		count = tty_prepare_flip_string(&port->port, &rp,  in isicom_interrupt()
661 			tty_insert_flip_char(&port->port, inw(base) & 0xff,  in isicom_interrupt()
674 		tty_flip_buffer_push(&port->port);  in isicom_interrupt()
685 	struct isi_port *port = tty->driver_data;  in isicom_config_port()  local
686 	struct isi_board *card = port->card;  in isicom_config_port()
689 	u16 channel_setup, channel = port->channel,  in isicom_config_port()
716 		if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)  in isicom_config_port()
718 		if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)  in isicom_config_port()
720 		if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)  in isicom_config_port()
722 		if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)  in isicom_config_port()
727 		drop_dtr(port);  in isicom_config_port()
730 		raise_dtr(port);  in isicom_config_port()
762 		port->port.flags &= ~ASYNC_CHECK_CD;  in isicom_config_port()
764 		port->port.flags |= ASYNC_CHECK_CD;  in isicom_config_port()
768 	port->port.flags &= ~ASYNC_CTS_FLOW;  in isicom_config_port()
770 		port->port.flags |= ASYNC_CTS_FLOW;  in isicom_config_port()
797 	struct isi_port *port;  in isicom_setup_board()  local
801 		port = bp->ports;  in isicom_setup_board()
802 		for (channel = 0; channel < bp->port_count; channel++, port++)  in isicom_setup_board()
803 			drop_dtr_rts(port);  in isicom_setup_board()
813 	struct isi_port *port = container_of(tport, struct isi_port, port);  in isicom_activate()  local
814 	struct isi_board *card = port->card;  in isicom_activate()
823 	port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;  in isicom_activate()
827 		outw(0x8000 | (port->channel << card->shift_count) | 0x02,  in isicom_activate()
838 static int isicom_carrier_raised(struct tty_port *port)  in isicom_carrier_raised()  argument
840 	struct isi_port *ip = container_of(port, struct isi_port, port);  in isicom_carrier_raised()
846 	struct isi_port *port;  in isicom_find_port()  local
861 	port = &isi_ports[line];  in isicom_find_port()
862 	if (isicom_paranoia_check(port, tty->name, "isicom_open"))  in isicom_find_port()
865 	return &port->port;  in isicom_find_port()
870 	struct isi_port *port;  in isicom_open()  local
876 	port = container_of(tport, struct isi_port, port);  in isicom_open()
878 	tty->driver_data = port;  in isicom_open()
885 static void isicom_shutdown_port(struct isi_port *port)  in isicom_shutdown_port()  argument
887 	struct isi_board *card = port->card;  in isicom_shutdown_port()
901 	struct isi_port *port = tty->driver_data;  in isicom_flush_buffer()  local
902 	struct isi_board *card = port->card;  in isicom_flush_buffer()
905 	if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))  in isicom_flush_buffer()
909 	port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;  in isicom_flush_buffer()
915 static void isicom_shutdown(struct tty_port *port)  in isicom_shutdown()  argument
917 	struct isi_port *ip = container_of(port, struct isi_port, port);  in isicom_shutdown()
928 	tty_port_free_xmit_buf(port);  in isicom_shutdown()
934 	struct tty_port *port;  in isicom_close()  local
939 	port = &ip->port;  in isicom_close()
942 	tty_port_close(port, tty, filp);  in isicom_close()
949 	struct isi_port *port = tty->driver_data;  in isicom_write()  local
950 	struct isi_board *card = port->card;  in isicom_write()
954 	if (isicom_paranoia_check(port, tty->name, "isicom_write"))  in isicom_write()
960 		cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt  in isicom_write()
961 				- 1, SERIAL_XMIT_SIZE - port->xmit_head));  in isicom_write()
965 		memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);  in isicom_write()
966 		port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE  in isicom_write()
968 		port->xmit_cnt += cnt;  in isicom_write()
973 	if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)  in isicom_write()
974 		port->status |= ISI_TXOK;  in isicom_write()
982 	struct isi_port *port = tty->driver_data;  in isicom_put_char()  local
983 	struct isi_board *card = port->card;  in isicom_put_char()
986 	if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))  in isicom_put_char()
990 	if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {  in isicom_put_char()
995 	port->port.xmit_buf[port->xmit_head++] = ch;  in isicom_put_char()
996 	port->xmit_head &= (SERIAL_XMIT_SIZE - 1);  in isicom_put_char()
997 	port->xmit_cnt++;  in isicom_put_char()
1005 	struct isi_port *port = tty->driver_data;  in isicom_flush_chars()  local
1007 	if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))  in isicom_flush_chars()
1010 	if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||  in isicom_flush_chars()
1011 			!port->port.xmit_buf)  in isicom_flush_chars()
1016 	port->status |= ISI_TXOK;  in isicom_flush_chars()
1022 	struct isi_port *port = tty->driver_data;  in isicom_write_room()  local
1025 	if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))  in isicom_write_room()
1028 	free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;  in isicom_write_room()
1037 	struct isi_port *port = tty->driver_data;  in isicom_chars_in_buffer()  local
1038 	if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))  in isicom_chars_in_buffer()
1040 	return port->xmit_cnt;  in isicom_chars_in_buffer()
1046 	struct isi_port *port = tty->driver_data;  in isicom_send_break()  local
1047 	struct isi_board *card = port->card;  in isicom_send_break()
1056 	outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);  in isicom_send_break()
1067 	struct isi_port *port = tty->driver_data;  in isicom_tiocmget()  local
1069 	u16 status = port->status;  in isicom_tiocmget()
1071 	if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))  in isicom_tiocmget()
1085 	struct isi_port *port = tty->driver_data;  in isicom_tiocmset()  local
1088 	if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))  in isicom_tiocmset()
1091 	spin_lock_irqsave(&port->card->card_lock, flags);  in isicom_tiocmset()
1093 		raise_rts(port);  in isicom_tiocmset()
1095 		raise_dtr(port);  in isicom_tiocmset()
1098 		drop_rts(port);  in isicom_tiocmset()
1100 		drop_dtr(port);  in isicom_tiocmset()
1101 	spin_unlock_irqrestore(&port->card->card_lock, flags);  in isicom_tiocmset()
1109 	struct isi_port *port = tty->driver_data;  in isicom_set_serial_info()  local
1116 	mutex_lock(&port->port.mutex);  in isicom_set_serial_info()
1117 	reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=  in isicom_set_serial_info()
1121 		if ((newinfo.close_delay != port->port.close_delay) ||  in isicom_set_serial_info()
1122 				(newinfo.closing_wait != port->port.closing_wait) ||  in isicom_set_serial_info()
1124 				(port->port.flags & ~ASYNC_USR_MASK))) {  in isicom_set_serial_info()
1125 			mutex_unlock(&port->port.mutex);  in isicom_set_serial_info()
1128 		port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |  in isicom_set_serial_info()
1131 		port->port.close_delay = newinfo.close_delay;  in isicom_set_serial_info()
1132 		port->port.closing_wait = newinfo.closing_wait;  in isicom_set_serial_info()
1133 		port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |  in isicom_set_serial_info()
1138 		spin_lock_irqsave(&port->card->card_lock, flags);  in isicom_set_serial_info()
1140 		spin_unlock_irqrestore(&port->card->card_lock, flags);  in isicom_set_serial_info()
1142 	mutex_unlock(&port->port.mutex);  in isicom_set_serial_info()
1146 static int isicom_get_serial_info(struct isi_port *port,  in isicom_get_serial_info()  argument
1151 	mutex_lock(&port->port.mutex);  in isicom_get_serial_info()
1154 	out_info.line = port - isi_ports;  in isicom_get_serial_info()
1155 	out_info.port = port->card->base;  in isicom_get_serial_info()
1156 	out_info.irq = port->card->irq;  in isicom_get_serial_info()
1157 	out_info.flags = port->port.flags;  in isicom_get_serial_info()
1159 	out_info.close_delay = port->port.close_delay;  in isicom_get_serial_info()
1160 	out_info.closing_wait = port->port.closing_wait;  in isicom_get_serial_info()
1161 	mutex_unlock(&port->port.mutex);  in isicom_get_serial_info()
1170 	struct isi_port *port = tty->driver_data;  in isicom_ioctl()  local
1173 	if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))  in isicom_ioctl()
1178 		return isicom_get_serial_info(port, argp);  in isicom_ioctl()
1193 	struct isi_port *port = tty->driver_data;  in isicom_set_termios()  local
1196 	if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))  in isicom_set_termios()
1203 	spin_lock_irqsave(&port->card->card_lock, flags);  in isicom_set_termios()
1205 	spin_unlock_irqrestore(&port->card->card_lock, flags);  in isicom_set_termios()
1217 	struct isi_port *port = tty->driver_data;  in isicom_throttle()  local
1218 	struct isi_board *card = port->card;  in isicom_throttle()
1220 	if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))  in isicom_throttle()
1224 	card->port_status &= ~(1 << port->channel);  in isicom_throttle()
1231 	struct isi_port *port = tty->driver_data;  in isicom_unthrottle()  local
1232 	struct isi_board *card = port->card;  in isicom_unthrottle()
1234 	if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))  in isicom_unthrottle()
1238 	card->port_status |= (1 << port->channel);  in isicom_unthrottle()
1245 	struct isi_port *port = tty->driver_data;  in isicom_stop()  local
1247 	if (isicom_paranoia_check(port, tty->name, "isicom_stop"))  in isicom_stop()
1252 	port->status &= ~ISI_TXOK;  in isicom_stop()
1258 	struct isi_port *port = tty->driver_data;  in isicom_start()  local
1260 	if (isicom_paranoia_check(port, tty->name, "isicom_start"))  in isicom_start()
1265 	port->status |= ISI_TXOK;  in isicom_start()
1270 	struct isi_port *port = tty->driver_data;  in isicom_hangup()  local
1272 	if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))  in isicom_hangup()
1274 	tty_port_hangup(&port->port);  in isicom_hangup()
1614 		struct tty_port *tport = &board->ports[index].port;  in isicom_probe()
1645 		tty_port_destroy(&board->ports[i].port);  in isicom_remove()
1658 	struct isi_port *port;  in isicom_init()  local
1661 		port = &isi_ports[idx * 16];  in isicom_init()
1662 		isi_card[idx].ports = port;  in isicom_init()
1664 		for (channel = 0; channel < 16; channel++, port++) {  in isicom_init()
1665 			port->magic = ISICOM_MAGIC;  in isicom_init()
1666 			port->card = &isi_card[idx];  in isicom_init()
1667 			port->channel = channel;  in isicom_init()
1668 			port->status = 0;  in isicom_init()