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/mutex.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 void kd_mksound(unsigned int hz, unsigned int ticks);
29 extern int kbd_rate(struct kbd_repeat *rep);
30 extern int fg_console, last_console, want_console;
31
32 /* console.c */
33
34 int vc_allocate(unsigned int console);
35 int vc_cons_allocated(unsigned int console);
36 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
37 int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
38 void vc_deallocate(unsigned int console);
39 void reset_palette(struct vc_data *vc);
40 void do_blank_screen(int entering_gfx);
41 void do_unblank_screen(int leaving_gfx);
42 void unblank_screen(void);
43 void poke_blanked_console(void);
44 int con_font_op(struct vc_data *vc, struct console_font_op *op);
45 int con_set_cmap(unsigned char __user *cmap);
46 int con_get_cmap(unsigned char __user *cmap);
47 void scrollback(struct vc_data *vc, int lines);
48 void scrollfront(struct vc_data *vc, int lines);
49 void update_region(struct vc_data *vc, unsigned long start, int count);
50 void redraw_screen(struct vc_data *vc, int is_switch);
51 #define update_screen(x) redraw_screen(x, 0)
52 #define switch_screen(x) redraw_screen(x, 1)
53
54 struct tty_struct;
55 int tioclinux(struct tty_struct *tty, unsigned long arg);
56
57 /* consolemap.c */
58
59 struct unimapinit;
60 struct unipair;
61
62 int con_set_trans_old(unsigned char __user * table);
63 int con_get_trans_old(unsigned char __user * table);
64 int con_set_trans_new(unsigned short __user * table);
65 int con_get_trans_new(unsigned short __user * table);
66 int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
67 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
68 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
69 int con_set_default_unimap(struct vc_data *vc);
70 void con_free_unimap(struct vc_data *vc);
71 void con_protect_unimap(struct vc_data *vc, int rdonly);
72 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
73
74 /* vt.c */
75 int vt_waitactive(int vt);
76 void change_console(struct vc_data *new_vc);
77 void reset_vc(struct vc_data *vc);
78 extern int unbind_con_driver(const struct consw *csw, int first, int last,
79 int deflt);
80 int vty_init(void);
81
82 /*
83 * vc_screen.c shares this temporary buffer with the console write code so that
84 * we can easily avoid touching user space while holding the console spinlock.
85 */
86
87 #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
88 extern char con_buf[CON_BUF_SIZE];
89 extern struct mutex con_buf_mtx;
90 extern char vt_dont_switch;
91 extern int default_utf8;
92
93 struct vt_spawn_console {
94 spinlock_t lock;
95 struct pid *pid;
96 int sig;
97 };
98 extern struct vt_spawn_console vt_spawn_con;
99
100 #endif /* _VT_KERN_H */
101
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