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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/drivers/ssl.c | |
download | op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/drivers/ssl.c')
-rw-r--r-- | arch/um/drivers/ssl.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c new file mode 100644 index 0000000..c5839c3 --- /dev/null +++ b/arch/um/drivers/ssl.c @@ -0,0 +1,251 @@ +/* + * 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 "linux/console.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 "mconsole_kern.h" +#include "2_5compat.h" + +static int ssl_version = 1; + +/* Referenced only by tty_driver below - presumably it's locked correctly + * by the tty driver. + */ + +static struct tty_driver *ssl_driver; + +#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, + .in_kernel = 1, +}; + +static int ssl_config(char *str); +static int ssl_get_config(char *dev, char *str, int size, char **error_out); +static int ssl_remove(char *str); + +static struct line_driver driver = { + .name = "UML serial line", + .device_name = "ttyS", + .devfs_name = "tts/", + .major = TTY_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", + .mc = { + .name = "ssl", + .config = ssl_config, + .get_config = ssl_get_config, + .remove = ssl_remove, + }, +}; + +/* The array is initialized by line_init, which is an initcall. The + * individual elements are protected by individual semaphores. + */ +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); + +static int ssl_config(char *str) +{ + return(line_config(serial_lines, + sizeof(serial_lines)/sizeof(serial_lines[0]), str)); +} + +static int ssl_get_config(char *dev, char *str, int size, char **error_out) +{ + return(line_get_config(dev, serial_lines, + sizeof(serial_lines)/sizeof(serial_lines[0]), + str, size, error_out)); +} + +static int ssl_remove(char *str) +{ + return(line_remove(serial_lines, + sizeof(serial_lines)/sizeof(serial_lines[0]), str)); +} + +int ssl_open(struct tty_struct *tty, struct file *filp) +{ + return line_open(serial_lines, tty, &opts); +} + +#if 0 +static int ssl_chars_in_buffer(struct tty_struct *tty) +{ + return(0); +} + +static void ssl_flush_buffer(struct tty_struct *tty) +{ + return; +} + +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_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) +{ +} +#endif + +static struct tty_operations ssl_ops = { + .open = ssl_open, + .close = line_close, + .write = line_write, + .put_char = line_put_char, + .write_room = line_write_room, + .chars_in_buffer = line_chars_in_buffer, + .set_termios = line_set_termios, + .ioctl = line_ioctl, +#if 0 + .flush_chars = ssl_flush_chars, + .flush_buffer = ssl_flush_buffer, + .throttle = ssl_throttle, + .unthrottle = ssl_unthrottle, + .stop = ssl_stop, + .start = ssl_start, + .hangup = ssl_hangup, +#endif +}; + +/* Changed by ssl_init and referenced by ssl_exit, which are both serialized + * by being an initcall and exitcall, respectively. + */ +static int ssl_init_done = 0; + +static void ssl_console_write(struct console *c, const char *string, + unsigned len) +{ + struct line *line = &serial_lines[c->index]; + + down(&line->sem); + console_write_chan(&line->chan_list, string, len); + up(&line->sem); +} + +static struct tty_driver *ssl_console_device(struct console *c, int *index) +{ + *index = c->index; + return ssl_driver; +} + +static int ssl_console_setup(struct console *co, char *options) +{ + struct line *line = &serial_lines[co->index]; + + return console_open_chan(line,co,&opts); +} + +static struct console ssl_cons = { + .name = "ttyS", + .write = ssl_console_write, + .device = ssl_console_device, + .setup = ssl_console_setup, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +int ssl_init(void) +{ + char *new_title; + + printk(KERN_INFO "Initializing software serial port version %d\n", + ssl_version); + ssl_driver = line_register_devfs(&lines, &driver, &ssl_ops, + serial_lines, ARRAY_SIZE(serial_lines)); + + 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; + register_console(&ssl_cons); + return(0); +} +late_initcall(ssl_init); + +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); + +static int ssl_chan_setup(char *str) +{ + return(line_setup(serial_lines, + sizeof(serial_lines)/sizeof(serial_lines[0]), + str, 1)); +} + +__setup("ssl", ssl_chan_setup); +__channel_help(ssl_chan_setup, "ssl"); + +/* + * 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: + */ |