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/config.h>
10#include <linux/vt.h>
11#include <linux/kd.h>
12#include <linux/tty.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);
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);
36void vc_disallocate(unsigned int console);
37void reset_palette(struct vc_data *vc);
38void do_blank_screen(int entering_gfx);
39void do_unblank_screen(int leaving_gfx);
40void unblank_screen(void);
41void poke_blanked_console(void);
42int con_font_op(struct vc_data *vc, struct console_font_op *op);
43int con_set_cmap(unsigned char __user *cmap);
44int con_get_cmap(unsigned char __user *cmap);
45void scrollback(struct vc_data *vc, int lines);
46void scrollfront(struct vc_data *vc, int lines);
47void update_region(struct vc_data *vc, unsigned long start, int count);
48void redraw_screen(struct vc_data *vc, int is_switch);
49#define update_screen(x) redraw_screen(x, 0)
50#define switch_screen(x) redraw_screen(x, 1)
51
52struct tty_struct;
53int tioclinux(struct tty_struct *tty, unsigned long arg);
54
55/* consolemap.c */
56
57struct unimapinit;
58struct unipair;
59
60int con_set_trans_old(unsigned char __user * table);
61int con_get_trans_old(unsigned char __user * table);
62int con_set_trans_new(unsigned short __user * table);
63int con_get_trans_new(unsigned short __user * table);
64int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
65int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
66int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
67int con_set_default_unimap(struct vc_data *vc);
68void con_free_unimap(struct vc_data *vc);
69void con_protect_unimap(struct vc_data *vc, int rdonly);
70int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
71
72/* vt.c */
73int vt_waitactive(int vt);
74void change_console(struct vc_data *new_vc);
75void reset_vc(struct vc_data *vc);
76
77/*
78 * vc_screen.c shares this temporary buffer with the console write code so that
79 * we can easily avoid touching user space while holding the console spinlock.
80 */
81
82#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
83extern char con_buf[CON_BUF_SIZE];
84extern struct semaphore con_buf_sem;
85
86#endif /* _VT_KERN_H */