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