blob: d961635d0e618038cae7ebbcc3abcacddce4f59d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _VT_KERN_H
2#define _VT_KERN_H
3
4/*
5 * this really is an extension of the vc_cons structure in console.c, but
6 * with information needed by the vt package
7 */
8
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/vt.h>
10#include <linux/kd.h>
11#include <linux/tty.h>
Matthias Kaehlckec831c332007-05-08 00:39:49 -070012#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/console_struct.h>
14#include <linux/mm.h>
15
16/*
17 * Presently, a lot of graphics programs do not restore the contents of
18 * the higher font pages. Defining this flag will avoid use of them, but
19 * will lose support for PIO_FONTRESET. Note that many font operations are
20 * not likely to work with these programs anyway; they need to be
21 * fixed. The linux/Documentation directory includes a code snippet
22 * to save and restore the text font.
23 */
24#ifdef CONFIG_VGA_CONSOLE
25#define BROKEN_GRAPHICS_PROGRAMS 1
26#endif
27
28extern void kd_mksound(unsigned int hz, unsigned int ticks);
29extern int kbd_rate(struct kbd_repeat *rep);
Jon Smirla8f340e2006-07-10 04:44:12 -070030extern int fg_console, last_console, want_console;
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32/* console.c */
33
34int vc_allocate(unsigned int console);
35int vc_cons_allocated(unsigned int console);
36int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
Alan Coxca9bda02006-09-29 02:00:03 -070037int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
38void vc_deallocate(unsigned int console);
Linus Torvalds1da177e2005-04-16 15:20:36 -070039void reset_palette(struct vc_data *vc);
40void do_blank_screen(int entering_gfx);
41void do_unblank_screen(int leaving_gfx);
42void unblank_screen(void);
43void poke_blanked_console(void);
44int con_font_op(struct vc_data *vc, struct console_font_op *op);
45int con_set_cmap(unsigned char __user *cmap);
46int con_get_cmap(unsigned char __user *cmap);
47void scrollback(struct vc_data *vc, int lines);
48void scrollfront(struct vc_data *vc, int lines);
49void update_region(struct vc_data *vc, unsigned long start, int count);
50void redraw_screen(struct vc_data *vc, int is_switch);
51#define update_screen(x) redraw_screen(x, 0)
52#define switch_screen(x) redraw_screen(x, 1)
53
54struct tty_struct;
55int tioclinux(struct tty_struct *tty, unsigned long arg);
56
57/* consolemap.c */
58
59struct unimapinit;
60struct unipair;
61
62int con_set_trans_old(unsigned char __user * table);
63int con_get_trans_old(unsigned char __user * table);
64int con_set_trans_new(unsigned short __user * table);
65int con_get_trans_new(unsigned short __user * table);
66int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
67int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
68int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
69int con_set_default_unimap(struct vc_data *vc);
70void con_free_unimap(struct vc_data *vc);
71void con_protect_unimap(struct vc_data *vc, int rdonly);
72int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
73
74/* vt.c */
75int vt_waitactive(int vt);
76void change_console(struct vc_data *new_vc);
77void reset_vc(struct vc_data *vc);
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79/*
80 * vc_screen.c shares this temporary buffer with the console write code so that
81 * we can easily avoid touching user space while holding the console spinlock.
82 */
83
84#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
85extern char con_buf[CON_BUF_SIZE];
Matthias Kaehlckec831c332007-05-08 00:39:49 -070086extern struct mutex con_buf_mtx;
Andrew Johnsonb257bc02007-03-16 13:38:24 -080087extern char vt_dont_switch;
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
Eric W. Biederman81af8d62006-10-02 02:17:13 -070089struct vt_spawn_console {
90 spinlock_t lock;
91 struct pid *pid;
92 int sig;
93};
94extern struct vt_spawn_console vt_spawn_con;
95
Linus Torvalds1da177e2005-04-16 15:20:36 -070096#endif /* _VT_KERN_H */