1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
4 */
5
6#ifndef __CHAN_KERN_H__
7#define __CHAN_KERN_H__
8
9#include <linux/tty.h>
10#include <linux/list.h>
11#include <linux/console.h>
12#include "chan_user.h"
13#include "line.h"
14
15struct chan {
16	struct list_head list;
17	struct list_head free_list;
18	struct line *line;
19	char *dev;
20	unsigned int primary:1;
21	unsigned int input:1;
22	unsigned int output:1;
23	unsigned int opened:1;
24	unsigned int enabled:1;
25	int fd;
26	const struct chan_ops *ops;
27	void *data;
28};
29
30extern void chan_interrupt(struct line *line, int irq);
31extern int parse_chan_pair(char *str, struct line *line, int device,
32			   const struct chan_opts *opts, char **error_out);
33extern int write_chan(struct chan *chan, const char *buf, int len,
34			     int write_irq);
35extern int console_write_chan(struct chan *chan, const char *buf,
36			      int len);
37extern int console_open_chan(struct line *line, struct console *co);
38extern void deactivate_chan(struct chan *chan, int irq);
39extern void reactivate_chan(struct chan *chan, int irq);
40extern void chan_enable_winch(struct chan *chan, struct tty_port *port);
41extern int enable_chan(struct line *line);
42extern void close_chan(struct line *line);
43extern int chan_window_size(struct line *line,
44			     unsigned short *rows_out,
45			     unsigned short *cols_out);
46extern int chan_config_string(struct line *line, char *str, int size,
47			      char **error_out);
48
49#endif
50