File: /usr/include/linux/vt_kern.h

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     
12     /*
13      * Presently, a lot of graphics programs do not restore the contents of
14      * the higher font pages.  Defining this flag will avoid use of them, but
15      * will lose support for PIO_FONTRESET.  Note that many font operations are
16      * not likely to work with these programs anyway; they need to be
17      * fixed.  The linux/Documentation directory includes a code snippet
18      * to save and restore the text font.
19      */
20     #ifdef CONFIG_VGA_CONSOLE
21     #define BROKEN_GRAPHICS_PROGRAMS 1
22     #endif
23     
24     extern struct vt_struct {
25     	int vc_num;				/* The console number */
26     	unsigned char	vc_mode;		/* KD_TEXT, ... */
27     	struct vt_mode	vt_mode;
28     	int		vt_pid;
29     	int		vt_newvt;
30     	wait_queue_head_t paste_wait;
31     } *vt_cons[MAX_NR_CONSOLES];
32     
33     extern void (*kd_mksound)(unsigned int hz, unsigned int ticks);
34     
35     /* console.c */
36     
37     struct console_font_op;
38     
39     int vc_allocate(unsigned int console);
40     int vc_cons_allocated(unsigned int console);
41     int vc_resize(unsigned int lines, unsigned int cols,
42     	      unsigned int first, unsigned int last);
43     #define vc_resize_all(l, c) vc_resize(l, c, 0, MAX_NR_CONSOLES-1)
44     #define vc_resize_con(l, c, x) vc_resize(l, c, x, x)
45     void vc_disallocate(unsigned int console);
46     void reset_palette(int currcons);
47     void set_palette(int currcons);
48     void do_blank_screen(int gfx_mode);
49     void unblank_screen(void);
50     void poke_blanked_console(void);
51     int con_font_op(int currcons, struct console_font_op *op);
52     int con_set_cmap(unsigned char *cmap);
53     int con_get_cmap(unsigned char *cmap);
54     void scrollback(int);
55     void scrollfront(int);
56     void update_region(int currcons, unsigned long start, int count);
57     void redraw_screen(int new_console, int is_switch);
58     #define update_screen(x) redraw_screen(x, 0)
59     #define switch_screen(x) redraw_screen(x, 1)
60     
61     struct tty_struct;
62     int tioclinux(struct tty_struct *tty, unsigned long arg);
63     
64     /* consolemap.c */
65     
66     struct unimapinit;
67     struct unipair;
68     
69     int con_set_trans_old(unsigned char * table);
70     int con_get_trans_old(unsigned char * table);
71     int con_set_trans_new(unsigned short * table);
72     int con_get_trans_new(unsigned short * table);
73     int con_clear_unimap(int currcons, struct unimapinit *ui);
74     int con_set_unimap(int currcons, ushort ct, struct unipair *list);
75     int con_get_unimap(int currcons, ushort ct, ushort *uct, struct unipair *list);
76     int con_set_default_unimap(int currcons);
77     void con_free_unimap(int currcons);
78     void con_protect_unimap(int currcons, int rdonly);
79     int con_copy_unimap(int dstcons, int srccons);
80     
81     /* vt.c */
82     
83     extern unsigned int video_font_height;
84     extern unsigned int default_font_height;
85     extern unsigned int video_scan_lines;
86     
87     void complete_change_console(unsigned int new_console);
88     int vt_waitactive(int vt);
89     void change_console(unsigned int);
90     void reset_vc(unsigned int new_console);
91     int vt_waitactive(int vt);
92     
93     #endif /* _VT_KERN_H */
94