root/arch/um/drivers/chan.h

INCLUDED FROM

   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 
  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 line *line, int irq);
  31 extern int parse_chan_pair(char *str, struct line *line, int device,
  32                            const struct chan_opts *opts, char **error_out);
  33 extern int write_chan(struct chan *chan, const char *buf, int len,
  34                              int write_irq);
  35 extern int console_write_chan(struct chan *chan, const char *buf, 
  36                               int len);
  37 extern int console_open_chan(struct line *line, struct console *co);
  38 extern void deactivate_chan(struct chan *chan, int irq);
  39 extern void reactivate_chan(struct chan *chan, int irq);
  40 extern void chan_enable_winch(struct chan *chan, struct tty_port *port);
  41 extern int enable_chan(struct line *line);
  42 extern void close_chan(struct line *line);
  43 extern int chan_window_size(struct line *line, 
  44                              unsigned short *rows_out, 
  45                              unsigned short *cols_out);
  46 extern int chan_config_string(struct line *line, char *str, int size,
  47                               char **error_out);
  48 
  49 #endif