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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
19void kd_mksound(unsigned int hz, unsigned int ticks);
20int kbd_rate(struct kbd_repeat *rep);
21
22extern int fg_console, last_console, want_console;
23
24/* console.c */
25
26int vc_allocate(unsigned int console);
27int vc_cons_allocated(unsigned int console);
28int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
29struct vc_data *vc_deallocate(unsigned int console);
30void reset_palette(struct vc_data *vc);
31void do_blank_screen(int entering_gfx);
32void do_unblank_screen(int leaving_gfx);
33void unblank_screen(void);
34void poke_blanked_console(void);
35int con_font_op(struct vc_data *vc, struct console_font_op *op);
36int con_set_cmap(unsigned char __user *cmap);
37int con_get_cmap(unsigned char __user *cmap);
38void scrollback(struct vc_data *vc);
39void scrollfront(struct vc_data *vc, int lines);
40void clear_buffer_attributes(struct vc_data *vc);
41void update_region(struct vc_data *vc, unsigned long start, int count);
42void redraw_screen(struct vc_data *vc, int is_switch);
43#define update_screen(x) redraw_screen(x, 0)
44#define switch_screen(x) redraw_screen(x, 1)
45
46struct tty_struct;
47int tioclinux(struct tty_struct *tty, unsigned long arg);
48
49#ifdef CONFIG_CONSOLE_TRANSLATIONS
50/* consolemap.c */
51
52struct unipair;
53
54int con_set_trans_old(unsigned char __user * table);
55int con_get_trans_old(unsigned char __user * table);
56int con_set_trans_new(unsigned short __user * table);
57int con_get_trans_new(unsigned short __user * table);
58int con_clear_unimap(struct vc_data *vc);
59int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
60int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
61int con_set_default_unimap(struct vc_data *vc);
62void con_free_unimap(struct vc_data *vc);
63int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
64
65#else
66static inline int con_set_trans_old(unsigned char __user *table)
67{
68 return 0;
69}
70static inline int con_get_trans_old(unsigned char __user *table)
71{
72 return -EINVAL;
73}
74static inline int con_set_trans_new(unsigned short __user *table)
75{
76 return 0;
77}
78static inline int con_get_trans_new(unsigned short __user *table)
79{
80 return -EINVAL;
81}
82static inline int con_clear_unimap(struct vc_data *vc)
83{
84 return 0;
85}
86static inline
87int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
88{
89 return 0;
90}
91static inline
92int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
93 struct unipair __user *list)
94{
95 return -EINVAL;
96}
97static inline int con_set_default_unimap(struct vc_data *vc)
98{
99 return 0;
100}
101static inline void con_free_unimap(struct vc_data *vc)
102{
103}
104static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
105{
106}
107static inline
108int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
109{
110 return 0;
111}
112
113#endif
114
115/* vt.c */
116void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
117int vt_waitactive(int n);
118void change_console(struct vc_data *new_vc);
119void reset_vc(struct vc_data *vc);
120int do_unbind_con_driver(const struct consw *csw, int first, int last,
121 int deflt);
122int vty_init(const struct file_operations *console_fops);
123
124extern bool vt_dont_switch;
125extern int default_utf8;
126extern int global_cursor_default;
127
128struct vt_spawn_console {
129 spinlock_t lock;
130 struct pid *pid;
131 int sig;
132};
133extern struct vt_spawn_console vt_spawn_con;
134
135int vt_move_to_console(unsigned int vt, int alloc);
136
137/* Interfaces for VC notification of character events (for accessibility etc) */
138
139struct vt_notifier_param {
140 struct vc_data *vc; /* VC on which the update happened */
141 unsigned int c; /* Printed char */
142};
143
144int register_vt_notifier(struct notifier_block *nb);
145int unregister_vt_notifier(struct notifier_block *nb);
146
147void hide_boot_cursor(bool hide);
148
149/* keyboard provided interfaces */
150int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
151int vt_do_kdskbmode(unsigned int console, unsigned int arg);
152int vt_do_kdskbmeta(unsigned int console, unsigned int arg);
153int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
154 int perm);
155int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
156 unsigned int console);
157int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
158int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm);
159int vt_do_kdgkbmode(unsigned int console);
160int vt_do_kdgkbmeta(unsigned int console);
161void vt_reset_unicode(unsigned int console);
162int vt_get_shift_state(void);
163void vt_reset_keyboard(unsigned int console);
164int vt_get_leds(unsigned int console, int flag);
165int vt_get_kbd_mode_bit(unsigned int console, int bit);
166void vt_set_kbd_mode_bit(unsigned int console, int bit);
167void vt_clr_kbd_mode_bit(unsigned int console, int bit);
168void vt_set_led_state(unsigned int console, int leds);
169void vt_kbd_con_start(unsigned int console);
170void vt_kbd_con_stop(unsigned int console);
171
172void vc_scrolldelta_helper(struct vc_data *c, int lines,
173 unsigned int rolled_over, void *_base, unsigned int size);
174
175#endif /* _VT_KERN_H */
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);
39struct vc_data *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 clear_buffer_attributes(struct vc_data *vc);
51void update_region(struct vc_data *vc, unsigned long start, int count);
52void redraw_screen(struct vc_data *vc, int is_switch);
53#define update_screen(x) redraw_screen(x, 0)
54#define switch_screen(x) redraw_screen(x, 1)
55
56struct tty_struct;
57int tioclinux(struct tty_struct *tty, unsigned long arg);
58
59#ifdef CONFIG_CONSOLE_TRANSLATIONS
60/* consolemap.c */
61
62struct unimapinit;
63struct unipair;
64
65int con_set_trans_old(unsigned char __user * table);
66int con_get_trans_old(unsigned char __user * table);
67int con_set_trans_new(unsigned short __user * table);
68int con_get_trans_new(unsigned short __user * table);
69int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
70int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
71int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
72int con_set_default_unimap(struct vc_data *vc);
73void con_free_unimap(struct vc_data *vc);
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
79static inline int con_set_trans_old(unsigned char __user *table)
80{
81 return 0;
82}
83static inline int con_get_trans_old(unsigned char __user *table)
84{
85 return -EINVAL;
86}
87static inline int con_set_trans_new(unsigned short __user *table)
88{
89 return 0;
90}
91static inline int con_get_trans_new(unsigned short __user *table)
92{
93 return -EINVAL;
94}
95static inline int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
96{
97 return 0;
98}
99static inline
100int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
101{
102 return 0;
103}
104static inline
105int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
106 struct unipair __user *list)
107{
108 return -EINVAL;
109}
110static inline int con_set_default_unimap(struct vc_data *vc)
111{
112 return 0;
113}
114static inline void con_free_unimap(struct vc_data *vc)
115{
116}
117static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
118{
119}
120static inline
121int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
122{
123 return 0;
124}
125
126#define vc_translate(vc, c) (c)
127#endif
128
129/* vt.c */
130void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
131int vt_waitactive(int n);
132void change_console(struct vc_data *new_vc);
133void reset_vc(struct vc_data *vc);
134extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
135 int deflt);
136int vty_init(const struct file_operations *console_fops);
137
138static inline bool vt_force_oops_output(struct vc_data *vc)
139{
140 if (oops_in_progress && vc->vc_panic_force_write && panic_timeout >= 0)
141 return true;
142 return false;
143}
144
145extern char vt_dont_switch;
146extern int default_utf8;
147extern int global_cursor_default;
148
149struct vt_spawn_console {
150 spinlock_t lock;
151 struct pid *pid;
152 int sig;
153};
154extern struct vt_spawn_console vt_spawn_con;
155
156extern int vt_move_to_console(unsigned int vt, int alloc);
157
158/* Interfaces for VC notification of character events (for accessibility etc) */
159
160struct vt_notifier_param {
161 struct vc_data *vc; /* VC on which the update happened */
162 unsigned int c; /* Printed char */
163};
164
165extern int register_vt_notifier(struct notifier_block *nb);
166extern int unregister_vt_notifier(struct notifier_block *nb);
167
168extern void hide_boot_cursor(bool hide);
169
170/* keyboard provided interfaces */
171extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
172extern int vt_do_kdskbmode(int console, unsigned int arg);
173extern int vt_do_kdskbmeta(int console, unsigned int arg);
174extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
175 int perm);
176extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
177 int perm, int console);
178extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
179 int perm);
180extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
181extern int vt_do_kdgkbmode(int console);
182extern int vt_do_kdgkbmeta(int console);
183extern void vt_reset_unicode(int console);
184extern int vt_get_shift_state(void);
185extern void vt_reset_keyboard(int console);
186extern int vt_get_leds(int console, int flag);
187extern int vt_get_kbd_mode_bit(int console, int bit);
188extern void vt_set_kbd_mode_bit(int console, int bit);
189extern void vt_clr_kbd_mode_bit(int console, int bit);
190extern void vt_set_led_state(int console, int leds);
191extern void vt_set_led_state(int console, int leds);
192extern void vt_kbd_con_start(int console);
193extern void vt_kbd_con_stop(int console);
194
195
196#endif /* _VT_KERN_H */