arch/um/include/chan_kern.h

   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         struct chan_ops *ops;
  27         void *data;
  28 };
  29
  30 extern void chan_interrupt(struct list_head *chans, struct work_struct *task,
  31                            struct tty_struct *tty, int irq);
  32 extern int parse_chan_pair(char *str, struct line *line, int device,
  33                            struct chan_opts *opts);
  34 extern int open_chan(struct list_head *chans);
  35 extern int write_chan(struct list_head *chans, const char *buf, int len,
  36                              int write_irq);
  37 extern int console_write_chan(struct list_head *chans, const char *buf,
  38                               int len);
  39 extern int console_open_chan(struct line *line, struct console *co,
  40                              struct chan_opts *opts);
  41 extern void deactivate_chan(struct list_head *chans, int irq);
  42 extern void reactivate_chan(struct list_head *chans, int irq);
  43 extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
  44 extern void enable_chan(struct line *line);
  45 extern void close_chan(struct list_head *chans, int delay_free_irq);
  46 extern int chan_window_size(struct list_head *chans,
  47                              unsigned short *rows_out,
  48                              unsigned short *cols_out);
  49 extern int chan_out_fd(struct list_head *chans);
  50 extern int chan_config_string(struct list_head *chans, char *str, int size,
  51                               char **error_out);
  52
  53 #endif