90 	struct ipw_tty *tty = get_tty(linux_tty->index);  in ipw_open()  local
92 	if (!tty)  in ipw_open()
95 	mutex_lock(&tty->ipw_tty_mutex);  in ipw_open()
96 	if (tty->port.count == 0)  in ipw_open()
97 		tty->tx_bytes_queued = 0;  in ipw_open()
99 	tty->port.count++;  in ipw_open()
101 	tty->port.tty = linux_tty;  in ipw_open()
102 	linux_tty->driver_data = tty;  in ipw_open()
103 	tty->port.low_latency = 1;  in ipw_open()
105 	if (tty->tty_type == TTYTYPE_MODEM)  in ipw_open()
106 		ipwireless_ppp_open(tty->network);  in ipw_open()
108 	mutex_unlock(&tty->ipw_tty_mutex);  in ipw_open()
113 static void do_ipw_close(struct ipw_tty *tty)  in do_ipw_close()  argument
115 	tty->port.count--;  in do_ipw_close()
117 	if (tty->port.count == 0) {  in do_ipw_close()
118 		struct tty_struct *linux_tty = tty->port.tty;  in do_ipw_close()
121 			tty->port.tty = NULL;  in do_ipw_close()
124 			if (tty->tty_type == TTYTYPE_MODEM)  in do_ipw_close()
125 				ipwireless_ppp_close(tty->network);  in do_ipw_close()
132 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_hangup()  local
134 	if (!tty)  in ipw_hangup()
137 	mutex_lock(&tty->ipw_tty_mutex);  in ipw_hangup()
138 	if (tty->port.count == 0) {  in ipw_hangup()
139 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_hangup()
143 	do_ipw_close(tty);  in ipw_hangup()
145 	mutex_unlock(&tty->ipw_tty_mutex);  in ipw_hangup()
154 void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,  in ipwireless_tty_received()  argument
159 	mutex_lock(&tty->ipw_tty_mutex);  in ipwireless_tty_received()
161 	if (!tty->port.count) {  in ipwireless_tty_received()
162 		mutex_unlock(&tty->ipw_tty_mutex);  in ipwireless_tty_received()
165 	mutex_unlock(&tty->ipw_tty_mutex);  in ipwireless_tty_received()
167 	work = tty_insert_flip_string(&tty->port, data, length);  in ipwireless_tty_received()
175 		tty_flip_buffer_push(&tty->port);  in ipwireless_tty_received()
181 	struct ipw_tty *tty = callback_data;  in ipw_write_packet_sent_callback()  local
187 	tty->tx_bytes_queued -= packet_length;  in ipw_write_packet_sent_callback()
193 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_write()  local
196 	if (!tty)  in ipw_write()
199 	mutex_lock(&tty->ipw_tty_mutex);  in ipw_write()
200 	if (!tty->port.count) {  in ipw_write()
201 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
205 	room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;  in ipw_write()
213 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
217 	ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,  in ipw_write()
219 			       ipw_write_packet_sent_callback, tty);  in ipw_write()
221 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
225 	tty->tx_bytes_queued += count;  in ipw_write()
226 	mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
233 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_write_room()  local
237 	if (!tty)  in ipw_write_room()
240 	if (!tty->port.count)  in ipw_write_room()
243 	room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;  in ipw_write_room()
250 static int ipwireless_get_serial_info(struct ipw_tty *tty,  in ipwireless_get_serial_info()  argument
260 	tmp.line = tty->index;  in ipwireless_get_serial_info()
277 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_chars_in_buffer()  local
279 	if (!tty)  in ipw_chars_in_buffer()
282 	if (!tty->port.count)  in ipw_chars_in_buffer()
285 	return tty->tx_bytes_queued;  in ipw_chars_in_buffer()
288 static int get_control_lines(struct ipw_tty *tty)  in get_control_lines()  argument
290 	unsigned int my = tty->control_lines;  in get_control_lines()
307 static int set_control_lines(struct ipw_tty *tty, unsigned int set,  in set_control_lines()  argument
313 		ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1);  in set_control_lines()
316 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
317 			ret = ipwireless_set_RTS(tty->hardware,  in set_control_lines()
318 					  tty->secondary_channel_idx, 1);  in set_control_lines()
324 		ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1);  in set_control_lines()
327 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
328 			ret = ipwireless_set_DTR(tty->hardware,  in set_control_lines()
329 					  tty->secondary_channel_idx, 1);  in set_control_lines()
335 		ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0);  in set_control_lines()
336 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
337 			ret = ipwireless_set_RTS(tty->hardware,  in set_control_lines()
338 					  tty->secondary_channel_idx, 0);  in set_control_lines()
344 		ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0);  in set_control_lines()
345 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
346 			ret = ipwireless_set_DTR(tty->hardware,  in set_control_lines()
347 					  tty->secondary_channel_idx, 0);  in set_control_lines()
357 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_tiocmget()  local
360 	if (!tty)  in ipw_tiocmget()
363 	if (!tty->port.count)  in ipw_tiocmget()
366 	return get_control_lines(tty);  in ipw_tiocmget()
373 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_tiocmset()  local
376 	if (!tty)  in ipw_tiocmset()
379 	if (!tty->port.count)  in ipw_tiocmset()
382 	return set_control_lines(tty, set, clear);  in ipw_tiocmset()
388 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_ioctl()  local
390 	if (!tty)  in ipw_ioctl()
393 	if (!tty->port.count)  in ipw_ioctl()
400 		return ipwireless_get_serial_info(tty, (void __user *) arg);  in ipw_ioctl()
406 	if (tty->tty_type == TTYTYPE_MODEM) {  in ipw_ioctl()
411 							tty->network);  in ipw_ioctl()
423 						tty->network);  in ipw_ioctl()
524 void ipwireless_tty_free(struct ipw_tty *tty)  in ipwireless_tty_free()  argument
527 	struct ipw_network *network = ttys[tty->index]->network;  in ipwireless_tty_free()
529 	for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;  in ipwireless_tty_free()
540 			if (ttyj->port.tty != NULL) {  in ipwireless_tty_free()
542 				tty_vhangup(ttyj->port.tty);  in ipwireless_tty_free()
617 int ipwireless_tty_is_modem(struct ipw_tty *tty)  in ipwireless_tty_is_modem()  argument
619 	return tty->tty_type == TTYTYPE_MODEM;  in ipwireless_tty_is_modem()
623 ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,  in ipwireless_tty_notify_control_line_change()  argument
628 	unsigned int old_control_lines = tty->control_lines;  in ipwireless_tty_notify_control_line_change()
630 	tty->control_lines = (tty->control_lines & ~changed_mask)  in ipwireless_tty_notify_control_line_change()
638 			&& !(tty->control_lines & IPW_CONTROL_LINE_DCD)  in ipwireless_tty_notify_control_line_change()
639 			&& tty->port.tty) {  in ipwireless_tty_notify_control_line_change()
640 		tty_hangup(tty->port.tty);  in ipwireless_tty_notify_control_line_change()