Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
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 "chan_user.h"
15#include "mconsole_kern.h"
16
17struct line_driver {
18 char *name;
19 char *device_name;
20 char *devfs_name;
21 short major;
22 short minor_start;
23 short type;
24 short subtype;
25 int read_irq;
26 char *read_irq_name;
27 int write_irq;
28 char *write_irq_name;
29 char *symlink_from;
30 char *symlink_to;
31 struct mc_device mc;
32};
33
34struct line {
35 char *init_str;
36 int init_pri;
37 struct list_head chan_list;
38 int valid;
39 int count;
40 /*This lock is actually, mostly, local to*/
41 spinlock_t lock;
42
43 /* Yes, this is a real circular buffer.
44 * XXX: And this should become a struct kfifo!
45 *
46 * buffer points to a buffer allocated on demand, of length
47 * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/
48 char *buffer;
49 char *head;
50 char *tail;
51
52 int sigio;
53 struct work_struct task;
54 struct line_driver *driver;
55 int have_irq;
56};
57
58#define LINE_INIT(str, d) \
59 { init_str : str, \
60 init_pri : INIT_STATIC, \
61 chan_list : { }, \
62 valid : 1, \
63 buffer : NULL, \
64 head : NULL, \
65 tail : NULL, \
66 sigio : 0, \
67 driver : d, \
68 have_irq : 0 }
69
70struct lines {
71 int num;
72};
73
74#define LINES_INIT(n) { num : n }
75
76extern void line_close(struct tty_struct *tty, struct file * filp);
77extern int line_open(struct line *lines, struct tty_struct *tty,
78 struct chan_opts *opts);
79extern int line_setup(struct line *lines, unsigned int sizeof_lines, char *init,
80 int all_allowed);
81extern int line_write(struct tty_struct *tty, const unsigned char *buf, int len);
82extern void line_put_char(struct tty_struct *tty, unsigned char ch);
83extern void line_set_termios(struct tty_struct *tty, struct termios * old);
84extern int line_chars_in_buffer(struct tty_struct *tty);
85extern void line_flush_buffer(struct tty_struct *tty);
86extern void line_flush_chars(struct tty_struct *tty);
87extern int line_write_room(struct tty_struct *tty);
88extern int line_ioctl(struct tty_struct *tty, struct file * file,
89 unsigned int cmd, unsigned long arg);
90
91extern char *add_xterm_umid(char *base);
92extern int line_setup_irq(int fd, int input, int output, struct tty_struct *tty);
93extern void line_close_chan(struct line *line);
94extern void line_disable(struct tty_struct *tty, int current_irq);
95extern struct tty_driver * line_register_devfs(struct lines *set,
96 struct line_driver *line_driver,
97 struct tty_operations *driver,
98 struct line *lines,
99 int nlines);
100extern void lines_init(struct line *lines, int nlines);
101extern void close_lines(struct line *lines, int nlines);
102
103extern int line_config(struct line *lines, unsigned int sizeof_lines, char *str);
104extern int line_id(char **str, int *start_out, int *end_out);
105extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n);
106extern int line_get_config(char *dev, struct line *lines, unsigned int sizeof_lines, char *str,
107 int size, char **error_out);
108
109#endif