tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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#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
30extern void kd_mksound(unsigned int hz, unsigned int ticks);
31extern int kbd_rate(struct kbd_repeat *rep);
32extern int fg_console, last_console, want_console;
33
34/* console.c */
35
36int vc_allocate(unsigned int console);
37int vc_cons_allocated(unsigned int console);
38int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
39void vc_deallocate(unsigned int console);
40void reset_palette(struct vc_data *vc);
41void do_blank_screen(int entering_gfx);
42void do_unblank_screen(int leaving_gfx);
43void unblank_screen(void);
44void poke_blanked_console(void);
45int con_font_op(struct vc_data *vc, struct console_font_op *op);
46int con_set_cmap(unsigned char __user *cmap);
47int con_get_cmap(unsigned char __user *cmap);
48void scrollback(struct vc_data *vc, int lines);
49void scrollfront(struct vc_data *vc, int lines);
50void update_region(struct vc_data *vc, unsigned long start, int count);
51void 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
55struct tty_struct;
56int tioclinux(struct tty_struct *tty, unsigned long arg);
57
58#ifdef CONFIG_CONSOLE_TRANSLATIONS
59/* consolemap.c */
60
61struct unimapinit;
62struct unipair;
63
64int con_set_trans_old(unsigned char __user * table);
65int con_get_trans_old(unsigned char __user * table);
66int con_set_trans_new(unsigned short __user * table);
67int con_get_trans_new(unsigned short __user * table);
68int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
69int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
70int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
71int con_set_default_unimap(struct vc_data *vc);
72void con_free_unimap(struct vc_data *vc);
73void con_protect_unimap(struct vc_data *vc, int rdonly);
74int 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 */
95void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
96int vt_waitactive(int n);
97void change_console(struct vc_data *new_vc);
98void reset_vc(struct vc_data *vc);
99extern int unbind_con_driver(const struct consw *csw, int first, int last,
100 int deflt);
101int 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)
109extern char con_buf[CON_BUF_SIZE];
110extern struct mutex con_buf_mtx;
111extern char vt_dont_switch;
112extern int default_utf8;
113
114struct vt_spawn_console {
115 spinlock_t lock;
116 struct pid *pid;
117 int sig;
118};
119extern struct vt_spawn_console vt_spawn_con;
120
121extern int vt_move_to_console(unsigned int vt, int alloc);
122
123/* Interfaces for VC notification of character events (for accessibility etc) */
124
125struct vt_notifier_param {
126 struct vc_data *vc; /* VC on which the update happened */
127 unsigned int c; /* Printed char */
128};
129
130extern int register_vt_notifier(struct notifier_block *nb);
131extern int unregister_vt_notifier(struct notifier_block *nb);
132
133#endif /* _VT_KERN_H */