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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livep...
[mirror_ubuntu-zesty-kernel.git] / arch / um / drivers / line.h
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1da177e4
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1/*
2 * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __LINE_H__
7#define __LINE_H__
8
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9#include <linux/list.h>
10#include <linux/workqueue.h>
11#include <linux/tty.h>
12#include <linux/interrupt.h>
13#include <linux/spinlock.h>
14#include <linux/mutex.h>
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15#include "chan_user.h"
16#include "mconsole_kern.h"
17
cfe6b7c7 18/* There's only two modifiable fields in this - .mc.list and .driver */
1da177e4 19struct line_driver {
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20 const char *name;
21 const char *device_name;
22 const short major;
23 const short minor_start;
24 const short type;
25 const short subtype;
26 const int read_irq;
27 const char *read_irq_name;
28 const int write_irq;
29 const char *write_irq_name;
1da177e4 30 struct mc_device mc;
cfe6b7c7 31 struct tty_driver *driver;
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32};
33
34struct line {
060ed31d 35 struct tty_port port;
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36 int valid;
37
1da177e4 38 char *init_str;
1da177e4 39 struct list_head chan_list;
ee485070 40 struct chan *chan_in, *chan_out;
d79a5809 41
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42 /*This lock is actually, mostly, local to*/
43 spinlock_t lock;
d79a5809 44 int throttled;
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45 /* Yes, this is a real circular buffer.
46 * XXX: And this should become a struct kfifo!
47 *
48 * buffer points to a buffer allocated on demand, of length
49 * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/
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50 char *buffer;
51 char *head;
52 char *tail;
b97b77cc 53
1da177e4 54 int sigio;
a2ce7740 55 struct delayed_work task;
5e7672ec 56 const struct line_driver *driver;
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57};
58
1da177e4 59extern void line_close(struct tty_struct *tty, struct file * filp);
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60extern int line_open(struct tty_struct *tty, struct file *filp);
61extern int line_install(struct tty_driver *driver, struct tty_struct *tty,
62 struct line *line);
63extern void line_cleanup(struct tty_struct *tty);
64extern void line_hangup(struct tty_struct *tty);
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65extern int line_setup(char **conf, unsigned nlines, char **def,
66 char *init, char *name);
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67extern int line_write(struct tty_struct *tty, const unsigned char *buf,
68 int len);
3168cb98 69extern int line_put_char(struct tty_struct *tty, unsigned char ch);
606d099c 70extern void line_set_termios(struct tty_struct *tty, struct ktermios * old);
1da177e4 71extern int line_chars_in_buffer(struct tty_struct *tty);
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72extern void line_flush_buffer(struct tty_struct *tty);
73extern void line_flush_chars(struct tty_struct *tty);
1da177e4 74extern int line_write_room(struct tty_struct *tty);
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75extern void line_throttle(struct tty_struct *tty);
76extern void line_unthrottle(struct tty_struct *tty);
b97b77cc 77
1da177e4 78extern char *add_xterm_umid(char *base);
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79extern int line_setup_irq(int fd, int input, int output, struct line *line,
80 void *data);
1da177e4 81extern void line_close_chan(struct line *line);
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82extern int register_lines(struct line_driver *line_driver,
83 const struct tty_operations *driver,
84 struct line *lines, int nlines);
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85extern int setup_one_line(struct line *lines, int n, char *init,
86 const struct chan_opts *opts, char **error_out);
1da177e4 87extern void close_lines(struct line *lines, int nlines);
b97b77cc 88
d50084a2 89extern int line_config(struct line *lines, unsigned int sizeof_lines,
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90 char *str, const struct chan_opts *opts,
91 char **error_out);
29d56cfe 92extern int line_id(char **str, int *start_out, int *end_out);
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93extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n,
94 char **error_out);
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95extern int line_get_config(char *dev, struct line *lines,
96 unsigned int sizeof_lines, char *str,
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97 int size, char **error_out);
98
99#endif