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 18cfe6b7c7SAl Viro /* There's only two modifiable fields in this - .mc.list and .driver */ 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; 31cfe6b7c7SAl Viro struct tty_driver *driver; 32510c72a3SAl Viro }; 33510c72a3SAl Viro 34510c72a3SAl Viro struct line { 35*060ed31dSJiri Slaby struct tty_port port; 36510c72a3SAl Viro struct tty_struct *tty; 37d8c215adSAl Viro struct mutex count_lock; 38510c72a3SAl Viro int valid; 39510c72a3SAl Viro 40510c72a3SAl Viro char *init_str; 41510c72a3SAl Viro struct list_head chan_list; 42ee485070SAl Viro struct chan *chan_in, *chan_out; 43510c72a3SAl Viro 44510c72a3SAl Viro /*This lock is actually, mostly, local to*/ 45510c72a3SAl Viro spinlock_t lock; 46510c72a3SAl Viro int throttled; 47510c72a3SAl Viro /* Yes, this is a real circular buffer. 48510c72a3SAl Viro * XXX: And this should become a struct kfifo! 49510c72a3SAl Viro * 50510c72a3SAl Viro * buffer points to a buffer allocated on demand, of length 51510c72a3SAl Viro * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/ 52510c72a3SAl Viro char *buffer; 53510c72a3SAl Viro char *head; 54510c72a3SAl Viro char *tail; 55510c72a3SAl Viro 56510c72a3SAl Viro int sigio; 57510c72a3SAl Viro struct delayed_work task; 58510c72a3SAl Viro const struct line_driver *driver; 59510c72a3SAl Viro }; 60510c72a3SAl Viro 61510c72a3SAl Viro extern void line_close(struct tty_struct *tty, struct file * filp); 62510c72a3SAl Viro extern int line_open(struct line *lines, struct tty_struct *tty); 6343574c1aSAl Viro extern int line_setup(char **conf, unsigned nlines, char **def, 6443574c1aSAl Viro char *init, char *name); 65510c72a3SAl Viro extern int line_write(struct tty_struct *tty, const unsigned char *buf, 66510c72a3SAl Viro int len); 67510c72a3SAl Viro extern int line_put_char(struct tty_struct *tty, unsigned char ch); 68510c72a3SAl Viro extern void line_set_termios(struct tty_struct *tty, struct ktermios * old); 69510c72a3SAl Viro extern int line_chars_in_buffer(struct tty_struct *tty); 70510c72a3SAl Viro extern void line_flush_buffer(struct tty_struct *tty); 71510c72a3SAl Viro extern void line_flush_chars(struct tty_struct *tty); 72510c72a3SAl Viro extern int line_write_room(struct tty_struct *tty); 73510c72a3SAl Viro extern int line_ioctl(struct tty_struct *tty, unsigned int cmd, 74510c72a3SAl Viro unsigned long arg); 75510c72a3SAl Viro extern void line_throttle(struct tty_struct *tty); 76510c72a3SAl Viro extern void line_unthrottle(struct tty_struct *tty); 77510c72a3SAl Viro 78510c72a3SAl Viro extern char *add_xterm_umid(char *base); 79510c72a3SAl Viro extern int line_setup_irq(int fd, int input, int output, struct line *line, 80510c72a3SAl Viro void *data); 81510c72a3SAl Viro extern void line_close_chan(struct line *line); 82cfe6b7c7SAl Viro extern int register_lines(struct line_driver *line_driver, 83510c72a3SAl Viro const struct tty_operations *driver, 84510c72a3SAl Viro struct line *lines, int nlines); 8504292b2cSAl Viro extern int setup_one_line(struct line *lines, int n, char *init, 8604292b2cSAl Viro const struct chan_opts *opts, char **error_out); 87510c72a3SAl Viro extern void close_lines(struct line *lines, int nlines); 88510c72a3SAl Viro 89510c72a3SAl Viro extern int line_config(struct line *lines, unsigned int sizeof_lines, 90510c72a3SAl Viro char *str, const struct chan_opts *opts, 91510c72a3SAl Viro char **error_out); 92510c72a3SAl Viro extern int line_id(char **str, int *start_out, int *end_out); 93510c72a3SAl Viro extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n, 94510c72a3SAl Viro char **error_out); 95510c72a3SAl Viro extern int line_get_config(char *dev, struct line *lines, 96510c72a3SAl Viro unsigned int sizeof_lines, char *str, 97510c72a3SAl Viro int size, char **error_out); 98510c72a3SAl Viro 99510c72a3SAl Viro #endif 100