91 	struct ipw_tty *tty = get_tty(linux_tty->index);  in ipw_open()  local
93 	if (!tty)  in ipw_open()
96 	mutex_lock(&tty->ipw_tty_mutex);  in ipw_open()
97 	if (tty->port.count == 0)  in ipw_open()
98 		tty->tx_bytes_queued = 0;  in ipw_open()
100 	tty->port.count++;  in ipw_open()
102 	tty->port.tty = linux_tty;  in ipw_open()
103 	linux_tty->driver_data = tty;  in ipw_open()
104 	tty->port.low_latency = 1;  in ipw_open()
106 	if (tty->tty_type == TTYTYPE_MODEM)  in ipw_open()
107 		ipwireless_ppp_open(tty->network);  in ipw_open()
109 	mutex_unlock(&tty->ipw_tty_mutex);  in ipw_open()
114 static void do_ipw_close(struct ipw_tty *tty)  in do_ipw_close()  argument
116 	tty->port.count--;  in do_ipw_close()
118 	if (tty->port.count == 0) {  in do_ipw_close()
119 		struct tty_struct *linux_tty = tty->port.tty;  in do_ipw_close()
122 			tty->port.tty = NULL;  in do_ipw_close()
125 			if (tty->tty_type == TTYTYPE_MODEM)  in do_ipw_close()
126 				ipwireless_ppp_close(tty->network);  in do_ipw_close()
133 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_hangup()  local
135 	if (!tty)  in ipw_hangup()
138 	mutex_lock(&tty->ipw_tty_mutex);  in ipw_hangup()
139 	if (tty->port.count == 0) {  in ipw_hangup()
140 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_hangup()
144 	do_ipw_close(tty);  in ipw_hangup()
146 	mutex_unlock(&tty->ipw_tty_mutex);  in ipw_hangup()
155 void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,  in ipwireless_tty_received()  argument
160 	mutex_lock(&tty->ipw_tty_mutex);  in ipwireless_tty_received()
162 	if (!tty->port.count) {  in ipwireless_tty_received()
163 		mutex_unlock(&tty->ipw_tty_mutex);  in ipwireless_tty_received()
166 	mutex_unlock(&tty->ipw_tty_mutex);  in ipwireless_tty_received()
168 	work = tty_insert_flip_string(&tty->port, data, length);  in ipwireless_tty_received()
176 		tty_flip_buffer_push(&tty->port);  in ipwireless_tty_received()
182 	struct ipw_tty *tty = callback_data;  in ipw_write_packet_sent_callback()  local
188 	tty->tx_bytes_queued -= packet_length;  in ipw_write_packet_sent_callback()
194 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_write()  local
197 	if (!tty)  in ipw_write()
200 	mutex_lock(&tty->ipw_tty_mutex);  in ipw_write()
201 	if (!tty->port.count) {  in ipw_write()
202 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
206 	room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;  in ipw_write()
214 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
218 	ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,  in ipw_write()
220 			       ipw_write_packet_sent_callback, tty);  in ipw_write()
222 		mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
226 	tty->tx_bytes_queued += count;  in ipw_write()
227 	mutex_unlock(&tty->ipw_tty_mutex);  in ipw_write()
234 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_write_room()  local
238 	if (!tty)  in ipw_write_room()
241 	if (!tty->port.count)  in ipw_write_room()
244 	room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;  in ipw_write_room()
251 static int ipwireless_get_serial_info(struct ipw_tty *tty,  in ipwireless_get_serial_info()  argument
258 	tmp.line = tty->index;  in ipwireless_get_serial_info()
269 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_chars_in_buffer()  local
271 	if (!tty)  in ipw_chars_in_buffer()
274 	if (!tty->port.count)  in ipw_chars_in_buffer()
277 	return tty->tx_bytes_queued;  in ipw_chars_in_buffer()
280 static int get_control_lines(struct ipw_tty *tty)  in get_control_lines()  argument
282 	unsigned int my = tty->control_lines;  in get_control_lines()
299 static int set_control_lines(struct ipw_tty *tty, unsigned int set,  in set_control_lines()  argument
305 		ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1);  in set_control_lines()
308 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
309 			ret = ipwireless_set_RTS(tty->hardware,  in set_control_lines()
310 					  tty->secondary_channel_idx, 1);  in set_control_lines()
316 		ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1);  in set_control_lines()
319 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
320 			ret = ipwireless_set_DTR(tty->hardware,  in set_control_lines()
321 					  tty->secondary_channel_idx, 1);  in set_control_lines()
327 		ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0);  in set_control_lines()
328 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
329 			ret = ipwireless_set_RTS(tty->hardware,  in set_control_lines()
330 					  tty->secondary_channel_idx, 0);  in set_control_lines()
336 		ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0);  in set_control_lines()
337 		if (tty->secondary_channel_idx != -1) {  in set_control_lines()
338 			ret = ipwireless_set_DTR(tty->hardware,  in set_control_lines()
339 					  tty->secondary_channel_idx, 0);  in set_control_lines()
349 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_tiocmget()  local
352 	if (!tty)  in ipw_tiocmget()
355 	if (!tty->port.count)  in ipw_tiocmget()
358 	return get_control_lines(tty);  in ipw_tiocmget()
365 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_tiocmset()  local
368 	if (!tty)  in ipw_tiocmset()
371 	if (!tty->port.count)  in ipw_tiocmset()
374 	return set_control_lines(tty, set, clear);  in ipw_tiocmset()
380 	struct ipw_tty *tty = linux_tty->driver_data;  in ipw_ioctl()  local
382 	if (!tty)  in ipw_ioctl()
385 	if (!tty->port.count)  in ipw_ioctl()
392 		return ipwireless_get_serial_info(tty, (void __user *) arg);  in ipw_ioctl()
398 	if (tty->tty_type == TTYTYPE_MODEM) {  in ipw_ioctl()
403 							tty->network);  in ipw_ioctl()
415 						tty->network);  in ipw_ioctl()
516 void ipwireless_tty_free(struct ipw_tty *tty)  in ipwireless_tty_free()  argument
519 	struct ipw_network *network = ttys[tty->index]->network;  in ipwireless_tty_free()
521 	for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;  in ipwireless_tty_free()
532 			if (ttyj->port.tty != NULL) {  in ipwireless_tty_free()
534 				tty_vhangup(ttyj->port.tty);  in ipwireless_tty_free()
609 int ipwireless_tty_is_modem(struct ipw_tty *tty)  in ipwireless_tty_is_modem()  argument
611 	return tty->tty_type == TTYTYPE_MODEM;  in ipwireless_tty_is_modem()
615 ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,  in ipwireless_tty_notify_control_line_change()  argument
620 	unsigned int old_control_lines = tty->control_lines;  in ipwireless_tty_notify_control_line_change()
622 	tty->control_lines = (tty->control_lines & ~changed_mask)  in ipwireless_tty_notify_control_line_change()
630 			&& !(tty->control_lines & IPW_CONTROL_LINE_DCD)  in ipwireless_tty_notify_control_line_change()
631 			&& tty->port.tty) {  in ipwireless_tty_notify_control_line_change()
632 		tty_hangup(tty->port.tty);  in ipwireless_tty_notify_control_line_change()