| /* |
| * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #ifndef __LINE_H__ |
| #define __LINE_H__ |
| |
| #include "linux/list.h" |
| #include "linux/workqueue.h" |
| #include "linux/tty.h" |
| #include "linux/interrupt.h" |
| #include "linux/spinlock.h" |
| #include "chan_user.h" |
| #include "mconsole_kern.h" |
| |
| struct line_driver { |
| char *name; |
| char *device_name; |
| char *devfs_name; |
| short major; |
| short minor_start; |
| short type; |
| short subtype; |
| int read_irq; |
| char *read_irq_name; |
| int write_irq; |
| char *write_irq_name; |
| char *symlink_from; |
| char *symlink_to; |
| struct mc_device mc; |
| }; |
| |
| struct line { |
| char *init_str; |
| int init_pri; |
| struct list_head chan_list; |
| int valid; |
| int count; |
| /*This lock is actually, mostly, local to*/ |
| spinlock_t lock; |
| |
| /* Yes, this is a real circular buffer. |
| * XXX: And this should become a struct kfifo! |
| * |
| * buffer points to a buffer allocated on demand, of length |
| * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/ |
| char *buffer; |
| char *head; |
| char *tail; |
| |
| int sigio; |
| struct work_struct task; |
| struct line_driver *driver; |
| int have_irq; |
| }; |
| |
| #define LINE_INIT(str, d) \ |
| { init_str : str, \ |
| init_pri : INIT_STATIC, \ |
| valid : 1, \ |
| lock : SPIN_LOCK_UNLOCKED, \ |
| buffer : NULL, \ |
| head : NULL, \ |
| tail : NULL, \ |
| sigio : 0, \ |
| driver : d, \ |
| have_irq : 0 } |
| |
| struct lines { |
| int num; |
| }; |
| |
| #define LINES_INIT(n) { num : n } |
| |
| extern void line_close(struct tty_struct *tty, struct file * filp); |
| extern int line_open(struct line *lines, struct tty_struct *tty); |
| extern int line_setup(struct line *lines, unsigned int sizeof_lines, |
| char *init); |
| extern int line_write(struct tty_struct *tty, const unsigned char *buf, |
| int len); |
| extern void line_put_char(struct tty_struct *tty, unsigned char ch); |
| extern void line_set_termios(struct tty_struct *tty, struct termios * old); |
| extern int line_chars_in_buffer(struct tty_struct *tty); |
| extern void line_flush_buffer(struct tty_struct *tty); |
| extern void line_flush_chars(struct tty_struct *tty); |
| extern int line_write_room(struct tty_struct *tty); |
| extern int line_ioctl(struct tty_struct *tty, struct file * file, |
| unsigned int cmd, unsigned long arg); |
| |
| extern char *add_xterm_umid(char *base); |
| extern int line_setup_irq(int fd, int input, int output, |
| struct tty_struct *tty); |
| extern void line_close_chan(struct line *line); |
| extern void line_disable(struct tty_struct *tty, int current_irq); |
| extern struct tty_driver * line_register_devfs(struct lines *set, |
| struct line_driver *line_driver, |
| struct tty_operations *driver, |
| struct line *lines, |
| int nlines); |
| extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts); |
| extern void close_lines(struct line *lines, int nlines); |
| |
| extern int line_config(struct line *lines, unsigned int sizeof_lines, |
| char *str, struct chan_opts *opts); |
| extern int line_id(char **str, int *start_out, int *end_out); |
| extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n); |
| extern int line_get_config(char *dev, struct line *lines, |
| unsigned int sizeof_lines, char *str, |
| int size, char **error_out); |
| |
| #endif |