1510c72a3SAl Viro /* 2510c72a3SAl Viro * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) 3510c72a3SAl Viro * Licensed under the GPL 4510c72a3SAl Viro */ 5510c72a3SAl Viro 6510c72a3SAl Viro #ifndef __LINE_H__ 7510c72a3SAl Viro #define __LINE_H__ 8510c72a3SAl Viro 9510c72a3SAl Viro #include "linux/list.h" 10510c72a3SAl Viro #include "linux/workqueue.h" 11510c72a3SAl Viro #include "linux/tty.h" 12510c72a3SAl Viro #include "linux/interrupt.h" 13510c72a3SAl Viro #include "linux/spinlock.h" 14510c72a3SAl Viro #include "linux/mutex.h" 15510c72a3SAl Viro #include "chan_user.h" 16510c72a3SAl Viro #include "mconsole_kern.h" 17510c72a3SAl Viro 18510c72a3SAl Viro /* There's only one modifiable field in this - .mc.list */ 19510c72a3SAl Viro struct line_driver { 20510c72a3SAl Viro const char *name; 21510c72a3SAl Viro const char *device_name; 22510c72a3SAl Viro const short major; 23510c72a3SAl Viro const short minor_start; 24510c72a3SAl Viro const short type; 25510c72a3SAl Viro const short subtype; 26510c72a3SAl Viro const int read_irq; 27510c72a3SAl Viro const char *read_irq_name; 28510c72a3SAl Viro const int write_irq; 29510c72a3SAl Viro const char *write_irq_name; 30510c72a3SAl Viro struct mc_device mc; 31510c72a3SAl Viro }; 32510c72a3SAl Viro 33510c72a3SAl Viro struct line { 34510c72a3SAl Viro struct tty_struct *tty; 35510c72a3SAl Viro spinlock_t count_lock; 36510c72a3SAl Viro unsigned long count; 37510c72a3SAl Viro int valid; 38510c72a3SAl Viro 39510c72a3SAl Viro char *init_str; 40510c72a3SAl Viro struct list_head chan_list; 41510c72a3SAl Viro 42510c72a3SAl Viro /*This lock is actually, mostly, local to*/ 43510c72a3SAl Viro spinlock_t lock; 44510c72a3SAl Viro int throttled; 45510c72a3SAl Viro /* Yes, this is a real circular buffer. 46510c72a3SAl Viro * XXX: And this should become a struct kfifo! 47510c72a3SAl Viro * 48510c72a3SAl Viro * buffer points to a buffer allocated on demand, of length 49510c72a3SAl Viro * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/ 50510c72a3SAl Viro char *buffer; 51510c72a3SAl Viro char *head; 52510c72a3SAl Viro char *tail; 53510c72a3SAl Viro 54510c72a3SAl Viro int sigio; 55510c72a3SAl Viro struct delayed_work task; 56510c72a3SAl Viro const struct line_driver *driver; 57510c72a3SAl Viro int have_irq; 58510c72a3SAl Viro }; 59510c72a3SAl Viro 60510c72a3SAl Viro extern void line_close(struct tty_struct *tty, struct file * filp); 61510c72a3SAl Viro extern int line_open(struct line *lines, struct tty_struct *tty); 62*43574c1aSAl Viro extern int line_setup(char **conf, unsigned nlines, char **def, 63*43574c1aSAl Viro char *init, char *name); 64510c72a3SAl Viro extern int line_write(struct tty_struct *tty, const unsigned char *buf, 65510c72a3SAl Viro int len); 66510c72a3SAl Viro extern int line_put_char(struct tty_struct *tty, unsigned char ch); 67510c72a3SAl Viro extern void line_set_termios(struct tty_struct *tty, struct ktermios * old); 68510c72a3SAl Viro extern int line_chars_in_buffer(struct tty_struct *tty); 69510c72a3SAl Viro extern void line_flush_buffer(struct tty_struct *tty); 70510c72a3SAl Viro extern void line_flush_chars(struct tty_struct *tty); 71510c72a3SAl Viro extern int line_write_room(struct tty_struct *tty); 72510c72a3SAl Viro extern int line_ioctl(struct tty_struct *tty, unsigned int cmd, 73510c72a3SAl Viro unsigned long arg); 74510c72a3SAl Viro extern void line_throttle(struct tty_struct *tty); 75510c72a3SAl Viro extern void line_unthrottle(struct tty_struct *tty); 76510c72a3SAl Viro 77510c72a3SAl Viro extern char *add_xterm_umid(char *base); 78510c72a3SAl Viro extern int line_setup_irq(int fd, int input, int output, struct line *line, 79510c72a3SAl Viro void *data); 80510c72a3SAl Viro extern void line_close_chan(struct line *line); 81510c72a3SAl Viro extern struct tty_driver *register_lines(struct line_driver *line_driver, 82510c72a3SAl Viro const struct tty_operations *driver, 83510c72a3SAl Viro struct line *lines, int nlines); 84510c72a3SAl Viro extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts); 85510c72a3SAl Viro extern void close_lines(struct line *lines, int nlines); 86510c72a3SAl Viro 87510c72a3SAl Viro extern int line_config(struct line *lines, unsigned int sizeof_lines, 88510c72a3SAl Viro char *str, const struct chan_opts *opts, 89510c72a3SAl Viro char **error_out); 90510c72a3SAl Viro extern int line_id(char **str, int *start_out, int *end_out); 91510c72a3SAl Viro extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n, 92510c72a3SAl Viro char **error_out); 93510c72a3SAl Viro extern int line_get_config(char *dev, struct line *lines, 94510c72a3SAl Viro unsigned int sizeof_lines, char *str, 95510c72a3SAl Viro int size, char **error_out); 96510c72a3SAl Viro 97510c72a3SAl Viro #endif 98