Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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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/console_struct.h>
13#include <linux/mm.h>
14
15/*
16 * Presently, a lot of graphics programs do not restore the contents of
17 * the higher font pages. Defining this flag will avoid use of them, but
18 * will lose support for PIO_FONTRESET. Note that many font operations are
19 * not likely to work with these programs anyway; they need to be
20 * fixed. The linux/Documentation directory includes a code snippet
21 * to save and restore the text font.
22 */
23#ifdef CONFIG_VGA_CONSOLE
24#define BROKEN_GRAPHICS_PROGRAMS 1
25#endif
26
27extern void kd_mksound(unsigned int hz, unsigned int ticks);
28extern int kbd_rate(struct kbd_repeat *rep);
29extern int fg_console, last_console, want_console;
30
31/* console.c */
32
33int vc_allocate(unsigned int console);
34int vc_cons_allocated(unsigned int console);
35int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
36int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
37void vc_deallocate(unsigned int console);
38void reset_palette(struct vc_data *vc);
39void do_blank_screen(int entering_gfx);
40void do_unblank_screen(int leaving_gfx);
41void unblank_screen(void);
42void poke_blanked_console(void);
43int con_font_op(struct vc_data *vc, struct console_font_op *op);
44int con_set_cmap(unsigned char __user *cmap);
45int con_get_cmap(unsigned char __user *cmap);
46void scrollback(struct vc_data *vc, int lines);
47void scrollfront(struct vc_data *vc, int lines);
48void update_region(struct vc_data *vc, unsigned long start, int count);
49void redraw_screen(struct vc_data *vc, int is_switch);
50#define update_screen(x) redraw_screen(x, 0)
51#define switch_screen(x) redraw_screen(x, 1)
52
53struct tty_struct;
54int tioclinux(struct tty_struct *tty, unsigned long arg);
55
56/* consolemap.c */
57
58struct unimapinit;
59struct unipair;
60
61int con_set_trans_old(unsigned char __user * table);
62int con_get_trans_old(unsigned char __user * table);
63int con_set_trans_new(unsigned short __user * table);
64int con_get_trans_new(unsigned short __user * table);
65int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
66int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
67int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
68int con_set_default_unimap(struct vc_data *vc);
69void con_free_unimap(struct vc_data *vc);
70void con_protect_unimap(struct vc_data *vc, int rdonly);
71int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
72
73/* vt.c */
74int vt_waitactive(int vt);
75void change_console(struct vc_data *new_vc);
76void reset_vc(struct vc_data *vc);
77
78/*
79 * vc_screen.c shares this temporary buffer with the console write code so that
80 * we can easily avoid touching user space while holding the console spinlock.
81 */
82
83#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
84extern char con_buf[CON_BUF_SIZE];
85extern struct semaphore con_buf_sem;
86extern char vt_dont_switch;
87
88struct vt_spawn_console {
89 spinlock_t lock;
90 struct pid *pid;
91 int sig;
92};
93extern struct vt_spawn_console vt_spawn_con;
94
95#endif /* _VT_KERN_H */