/* * 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 <linux/mutex.h> #include "chan_user.h" #include "mconsole_kern.h" /* There's only two modifiable fields in this - .mc.list and .driver */ struct line_driver { const char *name; const char *device_name; const short major; const short minor_start; const short type; const short subtype; const int read_irq; const char *read_irq_name; const int write_irq; const char *write_irq_name; struct mc_device mc; struct tty_driver *driver; }; struct line { struct tty_port port; int valid; char *init_str; struct list_head chan_list; struct chan *chan_in, *chan_out; /*This lock is actually, mostly, local to*/ spinlock_t lock; int throttled; /* 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 delayed_work task; const struct line_driver *driver; }; extern void line_close(struct tty_struct *tty, struct file * filp); extern int line_open(struct tty_struct *tty, struct file *filp); extern int line_install(struct tty_driver *driver, struct tty_struct *tty, struct line *line); extern void line_cleanup(struct tty_struct *tty); extern void line_hangup(struct tty_struct *tty); extern int line_setup(char **conf, unsigned nlines, char **def, char *init, char *name); extern int line_write(struct tty_struct *tty, const unsigned char *buf, int len); extern int line_put_char(struct tty_struct *tty, unsigned char ch); extern void line_set_termios(struct tty_struct *tty, struct ktermios * 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 void line_throttle(struct tty_struct *tty); extern void line_unthrottle(struct tty_struct *tty); extern char *add_xterm_umid(char *base); extern int line_setup_irq(int fd, int input, int output, struct line *line, void *data); extern void line_close_chan(struct line *line); extern int register_lines(struct line_driver *line_driver, const struct tty_operations *driver, struct line *lines, int nlines); extern int setup_one_line(struct line *lines, int n, char *init, const struct chan_opts *opts, char **error_out); extern void close_lines(struct line *lines, int nlines); extern int line_config(struct line *lines, unsigned int sizeof_lines, char *str, const struct chan_opts *opts, char **error_out); 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, char **error_out); extern int line_get_config(char *dev, struct line *lines, unsigned int sizeof_lines, char *str, int size, char **error_out); #endif