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 * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
 * Licensed under the GPL

#ifndef __CHAN_KERN_H__
#define __CHAN_KERN_H__

#include "linux/tty.h"
#include "linux/list.h"
#include "linux/console.h"
#include "chan_user.h"
#include "line.h"

struct chan {
      struct list_head list;
      struct list_head free_list;
      struct line *line;
      char *dev;
      unsigned int primary:1;
      unsigned int input:1;
      unsigned int output:1;
      unsigned int opened:1;
      unsigned int enabled:1;
      int fd;
      const struct chan_ops *ops;
      void *data;

extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
                     struct tty_struct *tty, int irq);
extern int parse_chan_pair(char *str, struct line *line, int device,
                     const struct chan_opts *opts, char **error_out);
extern int write_chan(struct list_head *chans, const char *buf, int len,
                       int write_irq);
extern int console_write_chan(struct list_head *chans, const char *buf, 
                        int len);
extern int console_open_chan(struct line *line, struct console *co);
extern void deactivate_chan(struct list_head *chans, int irq);
extern void reactivate_chan(struct list_head *chans, int irq);
extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
extern int enable_chan(struct line *line);
extern void close_chan(struct list_head *chans, int delay_free_irq);
extern int chan_window_size(struct list_head *chans, 
                       unsigned short *rows_out, 
                       unsigned short *cols_out);
extern int chan_config_string(struct list_head *chans, char *str, int size,
                        char **error_out);


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