Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _VT_KERN_H
3#define _VT_KERN_H
4
5/*
6 * this really is an extension of the vc_cons structure in console.c, but
7 * with information needed by the vt package
8 */
9
10#include <linux/vt.h>
11#include <linux/kd.h>
12#include <linux/tty.h>
13#include <linux/mutex.h>
14#include <linux/console_struct.h>
15#include <linux/mm.h>
16#include <linux/consolemap.h>
17#include <linux/notifier.h>
18
19/*
20 * Presently, a lot of graphics programs do not restore the contents of
21 * the higher font pages. Defining this flag will avoid use of them, but
22 * will lose support for PIO_FONTRESET. Note that many font operations are
23 * not likely to work with these programs anyway; they need to be
24 * fixed. The linux/Documentation directory includes a code snippet
25 * to save and restore the text font.
26 */
27#ifdef CONFIG_VGA_CONSOLE
28#define BROKEN_GRAPHICS_PROGRAMS 1
29#endif
30
31void kd_mksound(unsigned int hz, unsigned int ticks);
32int kbd_rate(struct kbd_repeat *rep);
33
34extern int fg_console, last_console, want_console;
35
36/* console.c */
37
38int vc_allocate(unsigned int console);
39int vc_cons_allocated(unsigned int console);
40int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
41struct vc_data *vc_deallocate(unsigned int console);
42void reset_palette(struct vc_data *vc);
43void do_blank_screen(int entering_gfx);
44void do_unblank_screen(int leaving_gfx);
45void unblank_screen(void);
46void poke_blanked_console(void);
47int con_font_op(struct vc_data *vc, struct console_font_op *op);
48int con_set_cmap(unsigned char __user *cmap);
49int con_get_cmap(unsigned char __user *cmap);
50void scrollback(struct vc_data *vc);
51void scrollfront(struct vc_data *vc, int lines);
52void clear_buffer_attributes(struct vc_data *vc);
53void update_region(struct vc_data *vc, unsigned long start, int count);
54void redraw_screen(struct vc_data *vc, int is_switch);
55#define update_screen(x) redraw_screen(x, 0)
56#define switch_screen(x) redraw_screen(x, 1)
57
58struct tty_struct;
59int tioclinux(struct tty_struct *tty, unsigned long arg);
60
61#ifdef CONFIG_CONSOLE_TRANSLATIONS
62/* consolemap.c */
63
64struct unipair;
65
66int con_set_trans_old(unsigned char __user * table);
67int con_get_trans_old(unsigned char __user * table);
68int con_set_trans_new(unsigned short __user * table);
69int con_get_trans_new(unsigned short __user * table);
70int con_clear_unimap(struct vc_data *vc);
71int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
72int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
73int con_set_default_unimap(struct vc_data *vc);
74void con_free_unimap(struct vc_data *vc);
75int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
76
77#else
78static inline int con_set_trans_old(unsigned char __user *table)
79{
80 return 0;
81}
82static inline int con_get_trans_old(unsigned char __user *table)
83{
84 return -EINVAL;
85}
86static inline int con_set_trans_new(unsigned short __user *table)
87{
88 return 0;
89}
90static inline int con_get_trans_new(unsigned short __user *table)
91{
92 return -EINVAL;
93}
94static inline int con_clear_unimap(struct vc_data *vc)
95{
96 return 0;
97}
98static inline
99int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
100{
101 return 0;
102}
103static inline
104int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
105 struct unipair __user *list)
106{
107 return -EINVAL;
108}
109static inline int con_set_default_unimap(struct vc_data *vc)
110{
111 return 0;
112}
113static inline void con_free_unimap(struct vc_data *vc)
114{
115}
116static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
117{
118}
119static inline
120int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
121{
122 return 0;
123}
124
125#endif
126
127/* vt.c */
128void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
129int vt_waitactive(int n);
130void change_console(struct vc_data *new_vc);
131void reset_vc(struct vc_data *vc);
132int do_unbind_con_driver(const struct consw *csw, int first, int last,
133 int deflt);
134int vty_init(const struct file_operations *console_fops);
135
136extern bool vt_dont_switch;
137extern int default_utf8;
138extern int global_cursor_default;
139
140struct vt_spawn_console {
141 spinlock_t lock;
142 struct pid *pid;
143 int sig;
144};
145extern struct vt_spawn_console vt_spawn_con;
146
147int vt_move_to_console(unsigned int vt, int alloc);
148
149/* Interfaces for VC notification of character events (for accessibility etc) */
150
151struct vt_notifier_param {
152 struct vc_data *vc; /* VC on which the update happened */
153 unsigned int c; /* Printed char */
154};
155
156int register_vt_notifier(struct notifier_block *nb);
157int unregister_vt_notifier(struct notifier_block *nb);
158
159void hide_boot_cursor(bool hide);
160
161/* keyboard provided interfaces */
162int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
163int vt_do_kdskbmode(int console, unsigned int arg);
164int vt_do_kdskbmeta(int console, unsigned int arg);
165int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
166 int perm);
167int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
168 int console);
169int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
170int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
171int vt_do_kdgkbmode(int console);
172int vt_do_kdgkbmeta(int console);
173void vt_reset_unicode(int console);
174int vt_get_shift_state(void);
175void vt_reset_keyboard(int console);
176int vt_get_leds(int console, int flag);
177int vt_get_kbd_mode_bit(int console, int bit);
178void vt_set_kbd_mode_bit(int console, int bit);
179void vt_clr_kbd_mode_bit(int console, int bit);
180void vt_set_led_state(int console, int leds);
181void vt_set_led_state(int console, int leds);
182void vt_kbd_con_start(int console);
183void vt_kbd_con_stop(int console);
184
185void vc_scrolldelta_helper(struct vc_data *c, int lines,
186 unsigned int rolled_over, void *_base, unsigned int size);
187
188#endif /* _VT_KERN_H */