/* * 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, struct chan_opts *opts); 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); extern void close_lines(struct line *lines, int nlines); extern int line_config(struct line *lines, unsigned int sizeof_lines, char *str); 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