| /* |
| * Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #include "linux/config.h" |
| #include "linux/fs.h" |
| #include "linux/tty.h" |
| #include "linux/tty_driver.h" |
| #include "linux/major.h" |
| #include "linux/mm.h" |
| #include "linux/init.h" |
| #include "asm/termbits.h" |
| #include "asm/irq.h" |
| #include "line.h" |
| #include "ssl.h" |
| #include "chan_kern.h" |
| #include "user_util.h" |
| #include "kern_util.h" |
| #include "kern.h" |
| #include "init.h" |
| #include "irq_user.h" |
| #include "2_5compat.h" |
| |
| static int ssl_version = 1; |
| |
| static struct tty_driver ssl_driver; |
| |
| static int ssl_refcount = 0; |
| |
| #define NR_PORTS 64 |
| |
| void ssl_announce(char *dev_name, int dev) |
| { |
| printk(KERN_INFO "Serial line %d assigned device '%s'\n", dev, |
| dev_name); |
| } |
| |
| static struct chan_opts opts = { |
| announce: ssl_announce, |
| xterm_title: "Serial Line #%d", |
| raw: 1, |
| tramp_stack : 0, |
| }; |
| |
| static struct line_driver driver = { |
| name : "UML serial line", |
| devfs_name : "tts/%d", |
| major : TTYAUX_MAJOR, |
| minor_start : 64, |
| type : TTY_DRIVER_TYPE_SERIAL, |
| subtype : 0, |
| read_irq : SSL_IRQ, |
| read_irq_name : "ssl", |
| write_irq : SSL_WRITE_IRQ, |
| write_irq_name : "ssl-write", |
| symlink_from : "serial", |
| symlink_to : "tts", |
| }; |
| |
| static struct line serial_lines[NR_PORTS] = |
| { [0 ... NR_PORTS - 1] = LINE_INIT(CONFIG_SSL_CHAN, &driver) }; |
| |
| static struct lines lines = LINES_INIT(NR_PORTS); |
| |
| int ssl_open(struct tty_struct *tty, struct file *filp) |
| { |
| return(line_open(serial_lines, tty, &opts)); |
| } |
| |
| static void ssl_close(struct tty_struct *tty, struct file * filp) |
| { |
| line_close(serial_lines, tty); |
| } |
| |
| static int ssl_write(struct tty_struct * tty, int from_user, |
| const unsigned char *buf, int count) |
| { |
| return(line_write(serial_lines, tty, buf, count)); |
| } |
| |
| static void ssl_put_char(struct tty_struct *tty, unsigned char ch) |
| { |
| line_write(serial_lines, tty, &ch, sizeof(ch)); |
| } |
| |
| static void ssl_flush_chars(struct tty_struct *tty) |
| { |
| return; |
| } |
| |
| static int ssl_chars_in_buffer(struct tty_struct *tty) |
| { |
| return(0); |
| } |
| |
| static void ssl_flush_buffer(struct tty_struct *tty) |
| { |
| return; |
| } |
| |
| static int ssl_ioctl(struct tty_struct *tty, struct file * file, |
| unsigned int cmd, unsigned long arg) |
| { |
| int ret; |
| |
| ret = 0; |
| switch(cmd){ |
| case TCGETS: |
| case TCSETS: |
| case TCFLSH: |
| case TCSETSF: |
| case TCSETSW: |
| case TCGETA: |
| case TIOCMGET: |
| ret = -ENOIOCTLCMD; |
| break; |
| default: |
| printk(KERN_ERR |
| "Unimplemented ioctl in ssl_ioctl : 0x%x\n", cmd); |
| ret = -ENOIOCTLCMD; |
| break; |
| } |
| return(ret); |
| } |
| |
| static void ssl_throttle(struct tty_struct * tty) |
| { |
| printk(KERN_ERR "Someone should implement ssl_throttle\n"); |
| } |
| |
| static void ssl_unthrottle(struct tty_struct * tty) |
| { |
| printk(KERN_ERR "Someone should implement ssl_unthrottle\n"); |
| } |
| |
| static void ssl_set_termios(struct tty_struct *tty, |
| struct termios *old_termios) |
| { |
| } |
| |
| static void ssl_stop(struct tty_struct *tty) |
| { |
| printk(KERN_ERR "Someone should implement ssl_stop\n"); |
| } |
| |
| static void ssl_start(struct tty_struct *tty) |
| { |
| printk(KERN_ERR "Someone should implement ssl_start\n"); |
| } |
| |
| void ssl_hangup(struct tty_struct *tty) |
| { |
| } |
| |
| static int ssl_init_done = 0; |
| |
| int ssl_init(void) |
| { |
| char *new_title; |
| |
| printk(KERN_INFO "Initializing software serial port version %d\n", |
| ssl_version); |
| |
| ssl_driver = ((struct tty_driver) |
| { |
| refcount : &ssl_refcount, |
| open : ssl_open, |
| close : ssl_close, |
| write : ssl_write, |
| put_char : ssl_put_char, |
| flush_chars : ssl_flush_chars, |
| chars_in_buffer : ssl_chars_in_buffer, |
| flush_buffer : ssl_flush_buffer, |
| ioctl : ssl_ioctl, |
| throttle : ssl_throttle, |
| unthrottle : ssl_unthrottle, |
| set_termios : ssl_set_termios, |
| stop : ssl_stop, |
| start : ssl_start, |
| hangup : ssl_hangup |
| }); |
| |
| line_register_devfs(&lines, &driver, &ssl_driver, serial_lines, |
| sizeof(serial_lines)/sizeof(serial_lines[0])); |
| |
| lines_init(serial_lines, sizeof(serial_lines)/sizeof(serial_lines[0])); |
| |
| new_title = add_xterm_umid(opts.xterm_title); |
| if(new_title != NULL) opts.xterm_title = new_title; |
| |
| ssl_init_done = 1; |
| return(0); |
| } |
| |
| __initcall(ssl_init); |
| |
| static int ssl_chan_setup(char *str) |
| { |
| line_setup(serial_lines, sizeof(serial_lines)/sizeof(serial_lines[0]), |
| str); |
| return(1); |
| } |
| |
| __setup("ssl", ssl_chan_setup); |
| __channel_help(ssl_chan_setup, "ssl"); |
| |
| static void ssl_exit(void) |
| { |
| if(!ssl_init_done) return; |
| close_lines(serial_lines, |
| sizeof(serial_lines)/sizeof(serial_lines[0])); |
| } |
| |
| __uml_exitcall(ssl_exit); |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-file-style: "linux" |
| * End: |
| */ |