1 /*
2  * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
3  * Licensed under the GPL
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 
15 struct 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 
30 extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
31 			   struct tty_struct *tty, int irq);
32 extern int parse_chan_pair(char *str, struct line *line, int device,
33 			   const struct chan_opts *opts, char **error_out);
34 extern int write_chan(struct list_head *chans, const char *buf, int len,
35 			     int write_irq);
36 extern int console_write_chan(struct list_head *chans, const char *buf,
37 			      int len);
38 extern int console_open_chan(struct line *line, struct console *co);
39 extern void deactivate_chan(struct list_head *chans, int irq);
40 extern void reactivate_chan(struct list_head *chans, int irq);
41 extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
42 extern int enable_chan(struct line *line);
43 extern void close_chan(struct list_head *chans, int delay_free_irq);
44 extern int chan_window_size(struct list_head *chans,
45 			     unsigned short *rows_out,
46 			     unsigned short *cols_out);
47 extern int chan_config_string(struct list_head *chans, char *str, int size,
48 			      char **error_out);
49 
50 #endif
51