X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fum%2Fdrivers%2Fstdio_console.c;h=7a4897e27f42784054bb674fb29e8664f17a5af9;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=3ae795edfe8bc91d1e88ca24494bac871bd429f9;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c index 3ae795edf..7a4897e27 100644 --- a/arch/um/drivers/stdio_console.c +++ b/arch/um/drivers/stdio_console.c @@ -3,7 +3,6 @@ * Licensed under the GPL */ -#include "linux/config.h" #include "linux/posix_types.h" #include "linux/tty.h" #include "linux/tty_flip.h" @@ -17,8 +16,8 @@ #include "linux/init.h" #include "linux/interrupt.h" #include "linux/slab.h" +#include "linux/hardirq.h" #include "asm/current.h" -#include "asm/hardirq.h" #include "asm/irq.h" #include "stdio_console.h" #include "line.h" @@ -28,9 +27,10 @@ #include "irq_user.h" #include "mconsole_kern.h" #include "init.h" -#include "2_5compat.h" -#define MAX_TTYS (8) +#define MAX_TTYS (16) + +/* ----------------------------------------------------------------------------- */ /* Referenced only by tty_driver below - presumably it's locked correctly * by the tty driver. @@ -38,31 +38,6 @@ static struct tty_driver *console_driver; -static struct chan_ops init_console_ops = { - .type = "you shouldn't see this", - .init = NULL, - .open = NULL, - .close = NULL, - .read = NULL, - .write = NULL, - .console_write = generic_write, - .window_size = NULL, - .free = NULL, - .winch = 0, -}; - -static struct chan init_console_chan = { - .list = { }, - .primary = 1, - .input = 0, - .output = 1, - .opened = 1, - .fd = 1, - .pri = INIT_STATIC, - .ops = &init_console_ops, - .data = NULL -}; - void stdio_announce(char *dev_name, int dev) { printk(KERN_INFO "Virtual console %d assigned device '%s'\n", dev, @@ -79,11 +54,11 @@ static struct chan_opts opts = { static int con_config(char *str); static int con_get_config(char *dev, char *str, int size, char **error_out); -static int con_remove(char *str); +static int con_remove(int n); static struct line_driver driver = { .name = "UML console", - .devfs_name = "vc/%d", + .device_name = "tty", .major = TTY_MAJOR, .minor_start = 0, .type = TTY_DRIVER_TYPE_CONSOLE, @@ -98,6 +73,7 @@ static struct line_driver driver = { .name = "con", .config = con_config, .get_config = con_get_config, + .id = line_id, .remove = con_remove, }, }; @@ -108,142 +84,115 @@ static struct lines console_lines = LINES_INIT(MAX_TTYS); * individual elements are protected by individual semaphores. */ struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver), - [ 1 ... MAX_TTYS - 1 ] = + [ 1 ... MAX_TTYS - 1 ] = LINE_INIT(CONFIG_CON_CHAN, &driver) }; static int con_config(char *str) { - return(line_config(vts, sizeof(vts)/sizeof(vts[0]), str)); + return line_config(vts, ARRAY_SIZE(vts), str, &opts); } static int con_get_config(char *dev, char *str, int size, char **error_out) { - return(line_get_config(dev, vts, sizeof(vts)/sizeof(vts[0]), str, - size, error_out)); + return line_get_config(dev, vts, ARRAY_SIZE(vts), str, size, error_out); } -static int con_remove(char *str) +static int con_remove(int n) { - return(line_remove(vts, sizeof(vts)/sizeof(vts[0]), str)); -} - -static int open_console(struct tty_struct *tty) -{ - return(line_open(vts, tty, &opts)); + return line_remove(vts, ARRAY_SIZE(vts), n); } static int con_open(struct tty_struct *tty, struct file *filp) { - return(open_console(tty)); + return line_open(vts, tty); } -static void con_close(struct tty_struct *tty, struct file *filp) -{ - line_close(vts, tty); -} +/* Set in an initcall, checked in an exitcall */ +static int con_init_done = 0; + +static const struct tty_operations console_ops = { + .open = con_open, + .close = line_close, + .write = line_write, + .put_char = line_put_char, + .write_room = line_write_room, + .chars_in_buffer = line_chars_in_buffer, + .flush_buffer = line_flush_buffer, + .flush_chars = line_flush_chars, + .set_termios = line_set_termios, + .ioctl = line_ioctl, + .throttle = line_throttle, + .unthrottle = line_unthrottle, +}; -static int con_write(struct tty_struct *tty, int from_user, - const unsigned char *buf, int count) +static void uml_console_write(struct console *console, const char *string, + unsigned len) { - return(line_write(vts, tty, from_user, buf, count)); + struct line *line = &vts[console->index]; + unsigned long flags; + + spin_lock_irqsave(&line->lock, flags); + console_write_chan(&line->chan_list, string, len); + spin_unlock_irqrestore(&line->lock, flags); } -static void set_termios(struct tty_struct *tty, struct termios * old) +static struct tty_driver *uml_console_device(struct console *c, int *index) { + *index = c->index; + return console_driver; } -static int chars_in_buffer(struct tty_struct *tty) +static int uml_console_setup(struct console *co, char *options) { - return(0); + struct line *line = &vts[co->index]; + + return console_open_chan(line, co, &opts); } -static int con_init_done = 0; +static struct console stdiocons = { + .name = "tty", + .write = uml_console_write, + .device = uml_console_device, + .setup = uml_console_setup, + .flags = CON_PRINTBUFFER, + .index = -1, + .data = &vts, +}; int stdio_init(void) { char *new_title; - printk(KERN_INFO "Initializing stdio console driver\n"); - console_driver = line_register_devfs(&console_lines, &driver, - &console_ops, vts, sizeof(vts)/sizeof(vts[0])); + &console_ops, vts, + ARRAY_SIZE(vts)); + if (console_driver == NULL) + return -1; + printk(KERN_INFO "Initialized stdio console driver\n"); - lines_init(vts, sizeof(vts)/sizeof(vts[0])); + lines_init(vts, ARRAY_SIZE(vts), &opts); new_title = add_xterm_umid(opts.xterm_title); - if(new_title != NULL) opts.xterm_title = new_title; + if(new_title != NULL) + opts.xterm_title = new_title; - open_console(NULL); con_init_done = 1; - return(0); -} - -__initcall(stdio_init); - -static void console_write(struct console *console, const char *string, - unsigned len) -{ - if(con_init_done) down(&vts[console->index].sem); - console_write_chan(&vts[console->index].chan_list, string, len); - if(con_init_done) up(&vts[console->index].sem); -} - -static struct tty_operations console_ops = { - .open = con_open, - .close = con_close, - .write = con_write, - .chars_in_buffer = chars_in_buffer, - .set_termios = set_termios, - .write_room = line_write_room, -}; - -static struct tty_driver *console_device(struct console *c, int *index) -{ - *index = c->index; - return console_driver; -} - -static int console_setup(struct console *co, char *options) -{ - return(0); + register_console(&stdiocons); + return 0; } +late_initcall(stdio_init); -static struct console stdiocons = INIT_CONSOLE("tty", console_write, - console_device, console_setup, - CON_PRINTBUFFER); - -static void __init stdio_console_init(void) +static void console_exit(void) { - INIT_LIST_HEAD(&vts[0].chan_list); - list_add(&init_console_chan.list, &vts[0].chan_list); - register_console(&stdiocons); + if (!con_init_done) + return; + close_lines(vts, ARRAY_SIZE(vts)); } -console_initcall(stdio_console_init); +__uml_exitcall(console_exit); static int console_chan_setup(char *str) { - line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1); - return(1); + return line_setup(vts, ARRAY_SIZE(vts), str); } - __setup("con", console_chan_setup); __channel_help(console_chan_setup, "con"); - -static void console_exit(void) -{ - if(!con_init_done) return; - close_lines(vts, sizeof(vts)/sizeof(vts[0])); -} - -__uml_exitcall(console_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: - */