LXR linux/arch/um/drivers/chan.h

   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