File: /usr/src/linux/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     #include <linux/kd.h>
12     
13     /*
14      * Presently, a lot of graphics programs do not restore the contents of
15      * the higher font pages.  Defining this flag will avoid use of them, but
16      * will lose support for PIO_FONTRESET.  Note that many font operations are
17      * not likely to work with these programs anyway; they need to be
18      * fixed.  The linux/Documentation directory includes a code snippet
19      * to save and restore the text font.
20      */
21     #ifdef CONFIG_VGA_CONSOLE
22     #define BROKEN_GRAPHICS_PROGRAMS 1
23     #endif
24     
25     extern struct vt_struct {
26     	int vc_num;				/* The console number */
27     	unsigned char	vc_mode;		/* KD_TEXT, ... */
28     	struct vt_mode	vt_mode;
29     	int		vt_pid;
30     	int		vt_newvt;
31     	wait_queue_head_t paste_wait;
32     } *vt_cons[MAX_NR_CONSOLES];
33     
34     extern void (*kd_mksound)(unsigned int hz, unsigned int ticks);
35     extern int (*kbd_rate)(struct kbd_repeat *rep);
36     
37     /* console.c */
38     
39     struct console_font_op;
40     
41     int vc_allocate(unsigned int console);
42     int vc_cons_allocated(unsigned int console);
43     int vc_resize(unsigned int lines, unsigned int cols,
44     	      unsigned int first, unsigned int last);
45     #define vc_resize_all(l, c) vc_resize(l, c, 0, MAX_NR_CONSOLES-1)
46     #define vc_resize_con(l, c, x) vc_resize(l, c, x, x)
47     void vc_disallocate(unsigned int console);
48     void reset_palette(int currcons);
49     void set_palette(int currcons);
50     void do_blank_screen(int gfx_mode);
51     void unblank_screen(void);
52     void poke_blanked_console(void);
53     int con_font_op(int currcons, struct console_font_op *op);
54     int con_set_cmap(unsigned char *cmap);
55     int con_get_cmap(unsigned char *cmap);
56     void scrollback(int);
57     void scrollfront(int);
58     void update_region(int currcons, unsigned long start, int count);
59     void redraw_screen(int new_console, int is_switch);
60     #define update_screen(x) redraw_screen(x, 0)
61     #define switch_screen(x) redraw_screen(x, 1)
62     
63     struct tty_struct;
64     int tioclinux(struct tty_struct *tty, unsigned long arg);
65     
66     /* consolemap.c */
67     
68     struct unimapinit;
69     struct unipair;
70     
71     int con_set_trans_old(unsigned char * table);
72     int con_get_trans_old(unsigned char * table);
73     int con_set_trans_new(unsigned short * table);
74     int con_get_trans_new(unsigned short * table);
75     int con_clear_unimap(int currcons, struct unimapinit *ui);
76     int con_set_unimap(int currcons, ushort ct, struct unipair *list);
77     int con_get_unimap(int currcons, ushort ct, ushort *uct, struct unipair *list);
78     int con_set_default_unimap(int currcons);
79     void con_free_unimap(int currcons);
80     void con_protect_unimap(int currcons, int rdonly);
81     int con_copy_unimap(int dstcons, int srccons);
82     
83     /* vt.c */
84     
85     extern unsigned int video_font_height;
86     extern unsigned int default_font_height;
87     extern unsigned int video_scan_lines;
88     
89     void complete_change_console(unsigned int new_console);
90     int vt_waitactive(int vt);
91     void change_console(unsigned int);
92     void reset_vc(unsigned int new_console);
93     int vt_waitactive(int vt);
94     
95     #endif /* _VT_KERN_H */
96