Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#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
9#include <linux/vt.h>
10#include <linux/kd.h>
11#include <linux/tty.h>
12#include <linux/mutex.h>
13#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);
30extern int fg_console, last_console, want_console;
31
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);
37int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
38void vc_deallocate(unsigned int console);
39void 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);
78extern int unbind_con_driver(const struct consw *csw, int first, int last,
79 int deflt);
80
81/*
82 * vc_screen.c shares this temporary buffer with the console write code so that
83 * we can easily avoid touching user space while holding the console spinlock.
84 */
85
86#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
87extern char con_buf[CON_BUF_SIZE];
88extern struct mutex con_buf_mtx;
89extern char vt_dont_switch;
90extern int default_utf8;
91
92struct vt_spawn_console {
93 spinlock_t lock;
94 struct pid *pid;
95 int sig;
96};
97extern struct vt_spawn_console vt_spawn_con;
98
99#endif /* _VT_KERN_H */