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Commit | Line | Data |
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1da177e4 LT |
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" | |
b97b77cc | 13 | #include "linux/spinlock.h" |
d79a5809 | 14 | #include "linux/mutex.h" |
1da177e4 LT |
15 | #include "chan_user.h" |
16 | #include "mconsole_kern.h" | |
17 | ||
d5c9ffc6 | 18 | /* There's only one modifiable field in this - .mc.list */ |
1da177e4 | 19 | struct line_driver { |
d5c9ffc6 JD |
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 LT |
30 | struct mc_device mc; |
31 | }; | |
32 | ||
33 | struct line { | |
165dc591 | 34 | struct tty_struct *tty; |
d79a5809 JD |
35 | spinlock_t count_lock; |
36 | int valid; | |
37 | ||
1da177e4 LT |
38 | char *init_str; |
39 | int init_pri; | |
40 | struct list_head chan_list; | |
d79a5809 | 41 | |
b97b77cc PBG |
42 | /*This lock is actually, mostly, local to*/ |
43 | spinlock_t lock; | |
d79a5809 | 44 | int throttled; |
b97b77cc PBG |
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.*/ | |
1da177e4 LT |
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; |
1da177e4 LT |
57 | int have_irq; |
58 | }; | |
59 | ||
60 | #define LINE_INIT(str, d) \ | |
5563d722 | 61 | { .count_lock = __SPIN_LOCK_UNLOCKED((str).count_lock), \ |
d79a5809 | 62 | .init_str = str, \ |
4d338e1a AV |
63 | .init_pri = INIT_STATIC, \ |
64 | .valid = 1, \ | |
5563d722 | 65 | .lock = __SPIN_LOCK_UNLOCKED((str).lock), \ |
4d338e1a | 66 | .driver = d } |
1da177e4 | 67 | |
1da177e4 | 68 | extern void line_close(struct tty_struct *tty, struct file * filp); |
1f80171e | 69 | extern int line_open(struct line *lines, struct tty_struct *tty); |
d571cd18 | 70 | extern int line_setup(struct line *lines, unsigned int sizeof_lines, |
f28169d2 | 71 | char *init, char **error_out); |
d50084a2 JD |
72 | extern int line_write(struct tty_struct *tty, const unsigned char *buf, |
73 | int len); | |
3168cb98 | 74 | extern int line_put_char(struct tty_struct *tty, unsigned char ch); |
606d099c | 75 | extern void line_set_termios(struct tty_struct *tty, struct ktermios * old); |
1da177e4 | 76 | extern int line_chars_in_buffer(struct tty_struct *tty); |
b97b77cc PBG |
77 | extern void line_flush_buffer(struct tty_struct *tty); |
78 | extern void line_flush_chars(struct tty_struct *tty); | |
1da177e4 | 79 | extern int line_write_room(struct tty_struct *tty); |
8a06dc4d RW |
80 | extern int line_ioctl(struct tty_struct *tty, unsigned int cmd, |
81 | unsigned long arg); | |
e4dcee80 JD |
82 | extern void line_throttle(struct tty_struct *tty); |
83 | extern void line_unthrottle(struct tty_struct *tty); | |
b97b77cc | 84 | |
1da177e4 | 85 | extern char *add_xterm_umid(char *base); |
165dc591 JD |
86 | extern int line_setup_irq(int fd, int input, int output, struct line *line, |
87 | void *data); | |
1da177e4 | 88 | extern void line_close_chan(struct line *line); |
d5c9ffc6 JD |
89 | extern struct tty_driver *register_lines(struct line_driver *line_driver, |
90 | const struct tty_operations *driver, | |
91 | struct line *lines, int nlines); | |
1f80171e | 92 | extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts); |
1da177e4 | 93 | extern void close_lines(struct line *lines, int nlines); |
b97b77cc | 94 | |
d50084a2 | 95 | extern int line_config(struct line *lines, unsigned int sizeof_lines, |
f28169d2 JD |
96 | char *str, const struct chan_opts *opts, |
97 | char **error_out); | |
29d56cfe | 98 | extern int line_id(char **str, int *start_out, int *end_out); |
f28169d2 JD |
99 | extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n, |
100 | char **error_out); | |
d50084a2 JD |
101 | extern int line_get_config(char *dev, struct line *lines, |
102 | unsigned int sizeof_lines, char *str, | |
1da177e4 LT |
103 | int size, char **error_out); |
104 | ||
105 | #endif |