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
28 extern struct vt_struct {
29 int vc_num; /* The console number */
30 unsigned char vc_mode; /* KD_TEXT, ... */
31 struct vt_mode vt_mode;
32 int vt_pid;
33 int vt_newvt;
34 wait_queue_head_t paste_wait;
35 } *vt_cons[MAX_NR_CONSOLES];
36
37 extern void kd_mksound(unsigned int hz, unsigned int ticks);
38 extern int kbd_rate(struct kbd_repeat *rep);
39
40 /* console.c */
41
42 int vc_allocate(unsigned int console);
43 int vc_cons_allocated(unsigned int console);
44 int vc_resize(int currcons, unsigned int cols, unsigned int lines);
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 entering_gfx);
49 void do_unblank_screen(int leaving_gfx);
50 void unblank_screen(void);
51 void poke_blanked_console(void);
52 int con_font_op(int currcons, struct console_font_op *op);
53 int con_font_set(int currcons, struct console_font_op *op);
54 int con_font_get(int currcons, struct console_font_op *op);
55 int con_font_default(int currcons, struct console_font_op *op);
56 int con_font_copy(int currcons, struct console_font_op *op);
57 int con_set_cmap(unsigned char __user *cmap);
58 int con_get_cmap(unsigned char __user *cmap);
59 void scrollback(int);
60 void scrollfront(int);
61 void update_region(int currcons, unsigned long start, int count);
62 void redraw_screen(int new_console, int is_switch);
63 #define update_screen(x) redraw_screen(x, 0)
64 #define switch_screen(x) redraw_screen(x, 1)
65
66 struct tty_struct;
67 int tioclinux(struct tty_struct *tty, unsigned long arg);
68
69 /* consolemap.c */
70
71 struct unimapinit;
72 struct unipair;
73
74 int con_set_trans_old(unsigned char __user * table);
75 int con_get_trans_old(unsigned char __user * table);
76 int con_set_trans_new(unsigned short __user * table);
77 int con_get_trans_new(unsigned short __user * table);
78 int con_clear_unimap(int currcons, struct unimapinit *ui);
79 int con_set_unimap(int currcons, ushort ct, struct unipair __user *list);
80 int con_get_unimap(int currcons, ushort ct, ushort __user *uct, struct unipair __user *list);
81 int con_set_default_unimap(int currcons);
82 void con_free_unimap(int currcons);
83 void con_protect_unimap(int currcons, int rdonly);
84 int con_copy_unimap(int dstcons, int srccons);
85
86 /* vt.c */
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
92 /*
93 * vc_screen.c shares this temporary buffer with the console write code so that
94 * we can easily avoid touching user space while holding the console spinlock.
95 */
96 #define CON_BUF_SIZE PAGE_SIZE
97 extern char con_buf[CON_BUF_SIZE];
98 extern struct semaphore con_buf_sem;
99
100 #endif /* _VT_KERN_H */
101
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