Line data Source code
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 : #include <linux/consolemap.h>
16 : #include <linux/notifier.h>
17 :
18 : /*
19 : * Presently, a lot of graphics programs do not restore the contents of
20 : * the higher font pages. Defining this flag will avoid use of them, but
21 : * will lose support for PIO_FONTRESET. Note that many font operations are
22 : * not likely to work with these programs anyway; they need to be
23 : * fixed. The linux/Documentation directory includes a code snippet
24 : * to save and restore the text font.
25 : */
26 : #ifdef CONFIG_VGA_CONSOLE
27 : #define BROKEN_GRAPHICS_PROGRAMS 1
28 : #endif
29 :
30 : extern void kd_mksound(unsigned int hz, unsigned int ticks);
31 : extern int kbd_rate(struct kbd_repeat *rep);
32 1 : extern int fg_console, last_console, want_console;
33 :
34 : /* console.c */
35 :
36 : int vc_allocate(unsigned int console);
37 : int vc_cons_allocated(unsigned int console);
38 : int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
39 : void vc_deallocate(unsigned int console);
40 : void reset_palette(struct vc_data *vc);
41 : void do_blank_screen(int entering_gfx);
42 : void do_unblank_screen(int leaving_gfx);
43 : void unblank_screen(void);
44 : void poke_blanked_console(void);
45 : int con_font_op(struct vc_data *vc, struct console_font_op *op);
46 : int con_set_cmap(unsigned char __user *cmap);
47 : int con_get_cmap(unsigned char __user *cmap);
48 : void scrollback(struct vc_data *vc, int lines);
49 : void scrollfront(struct vc_data *vc, int lines);
50 : void update_region(struct vc_data *vc, unsigned long start, int count);
51 : void redraw_screen(struct vc_data *vc, int is_switch);
52 : #define update_screen(x) redraw_screen(x, 0)
53 : #define switch_screen(x) redraw_screen(x, 1)
54 :
55 : struct tty_struct;
56 : int tioclinux(struct tty_struct *tty, unsigned long arg);
57 :
58 : #ifdef CONFIG_CONSOLE_TRANSLATIONS
59 : /* consolemap.c */
60 :
61 : struct unimapinit;
62 : struct unipair;
63 :
64 : int con_set_trans_old(unsigned char __user * table);
65 : int con_get_trans_old(unsigned char __user * table);
66 : int con_set_trans_new(unsigned short __user * table);
67 : int con_get_trans_new(unsigned short __user * table);
68 : int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
69 : int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
70 : int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
71 : int con_set_default_unimap(struct vc_data *vc);
72 : void con_free_unimap(struct vc_data *vc);
73 : void con_protect_unimap(struct vc_data *vc, int rdonly);
74 : int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
75 :
76 : #define vc_translate(vc, c) ((vc)->vc_translate[(c) | \
77 : ((vc)->vc_toggle_meta ? 0x80 : 0)])
78 : #else
79 : #define con_set_trans_old(arg) (0)
80 : #define con_get_trans_old(arg) (-EINVAL)
81 : #define con_set_trans_new(arg) (0)
82 : #define con_get_trans_new(arg) (-EINVAL)
83 : #define con_clear_unimap(vc, ui) (0)
84 : #define con_set_unimap(vc, ct, list) (0)
85 : #define con_set_default_unimap(vc) (0)
86 : #define con_copy_unimap(d, s) (0)
87 : #define con_get_unimap(vc, ct, uct, list) (-EINVAL)
88 : #define con_free_unimap(vc) do { ; } while (0)
89 : #define con_protect_unimap(vc, rdonly) do { ; } while (0)
90 :
91 : #define vc_translate(vc, c) (c)
92 : #endif
93 :
94 : /* vt.c */
95 : void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
96 : int vt_waitactive(int n);
97 : void change_console(struct vc_data *new_vc);
98 : void reset_vc(struct vc_data *vc);
99 : extern int unbind_con_driver(const struct consw *csw, int first, int last,
100 : int deflt);
101 : int vty_init(const struct file_operations *console_fops);
102 :
103 : /*
104 : * vc_screen.c shares this temporary buffer with the console write code so that
105 : * we can easily avoid touching user space while holding the console spinlock.
106 : */
107 :
108 : #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
109 : extern char con_buf[CON_BUF_SIZE];
110 : extern struct mutex con_buf_mtx;
111 : extern char vt_dont_switch;
112 : extern int default_utf8;
113 : extern int global_cursor_default;
114 :
115 : struct vt_spawn_console {
116 : spinlock_t lock;
117 : struct pid *pid;
118 : int sig;
119 : };
120 : extern struct vt_spawn_console vt_spawn_con;
121 :
122 : extern int vt_move_to_console(unsigned int vt, int alloc);
123 :
124 : /* Interfaces for VC notification of character events (for accessibility etc) */
125 :
126 : struct vt_notifier_param {
127 : struct vc_data *vc; /* VC on which the update happened */
128 : unsigned int c; /* Printed char */
129 : };
130 :
131 : extern int register_vt_notifier(struct notifier_block *nb);
132 : extern int unregister_vt_notifier(struct notifier_block *nb);
133 :
134 : extern void hide_boot_cursor(bool hide);
135 :
136 : #endif /* _VT_KERN_H */
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