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b2441318 1/* SPDX-License-Identifier: GPL-2.0 */
1da177e4
LT
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
1da177e4
LT
10#include <linux/vt.h>
11#include <linux/kd.h>
12#include <linux/tty.h>
c831c338 13#include <linux/mutex.h>
1da177e4
LT
14#include <linux/console_struct.h>
15#include <linux/mm.h>
a29ccf6f 16#include <linux/consolemap.h>
a5eb5624 17#include <linux/notifier.h>
1da177e4
LT
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
31extern void kd_mksound(unsigned int hz, unsigned int ticks);
32extern int kbd_rate(struct kbd_repeat *rep);
a8f340e3 33extern int fg_console, last_console, want_console;
1da177e4
LT
34
35/* console.c */
36
37int vc_allocate(unsigned int console);
38int vc_cons_allocated(unsigned int console);
39int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
421b40a6 40struct vc_data *vc_deallocate(unsigned int console);
1da177e4
LT
41void reset_palette(struct vc_data *vc);
42void do_blank_screen(int entering_gfx);
43void do_unblank_screen(int leaving_gfx);
44void unblank_screen(void);
45void poke_blanked_console(void);
46int con_font_op(struct vc_data *vc, struct console_font_op *op);
47int con_set_cmap(unsigned char __user *cmap);
48int con_get_cmap(unsigned char __user *cmap);
1b0ec88a 49void scrollback(struct vc_data *vc);
1da177e4 50void scrollfront(struct vc_data *vc, int lines);
2a248307 51void clear_buffer_attributes(struct vc_data *vc);
1da177e4
LT
52void update_region(struct vc_data *vc, unsigned long start, int count);
53void redraw_screen(struct vc_data *vc, int is_switch);
54#define update_screen(x) redraw_screen(x, 0)
55#define switch_screen(x) redraw_screen(x, 1)
56
57struct tty_struct;
58int tioclinux(struct tty_struct *tty, unsigned long arg);
59
a29ccf6f 60#ifdef CONFIG_CONSOLE_TRANSLATIONS
1da177e4
LT
61/* consolemap.c */
62
1da177e4
LT
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);
f8b0c2e6 69int con_clear_unimap(struct vc_data *vc);
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LT
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);
1da177e4
LT
74int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
75
a29ccf6f 76#define vc_translate(vc, c) ((vc)->vc_translate[(c) | \
4744b434 77 ((vc)->vc_toggle_meta ? 0x80 : 0)])
a29ccf6f 78#else
75e0b946
KW
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}
f8b0c2e6 95static inline int con_clear_unimap(struct vc_data *vc)
75e0b946
KW
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}
a29ccf6f
DW
125
126#define vc_translate(vc, c) (c)
127#endif
128
1da177e4 129/* vt.c */
8b92e87d
AC
130void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
131int vt_waitactive(int n);
1da177e4 132void change_console(struct vc_data *new_vc);
d8a077b6
AW
133void reset_vc(struct vc_data *vc, int mode);
134
e93a9a86
TI
135extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
136 int deflt);
d81ed103 137int vty_init(const struct file_operations *console_fops);
1da177e4 138
8fd4bd22
JB
139static inline bool vt_force_oops_output(struct vc_data *vc)
140{
c958474b 141 if (oops_in_progress && vc->vc_panic_force_write && panic_timeout >= 0)
8fd4bd22
JB
142 return true;
143 return false;
144}
145
b257bc05 146extern char vt_dont_switch;
2e8ecb9d 147extern int default_utf8;
f6c06b68 148extern int global_cursor_default;
1da177e4 149
81af8d67
EB
150struct vt_spawn_console {
151 spinlock_t lock;
152 struct pid *pid;
153 int sig;
154};
155extern struct vt_spawn_console vt_spawn_con;
156
8d233558 157extern int vt_move_to_console(unsigned int vt, int alloc);
a5eb5624
AC
158
159/* Interfaces for VC notification of character events (for accessibility etc) */
160
161struct vt_notifier_param {
162 struct vc_data *vc; /* VC on which the update happened */
163 unsigned int c; /* Printed char */
164};
165
166extern int register_vt_notifier(struct notifier_block *nb);
167extern int unregister_vt_notifier(struct notifier_block *nb);
168
f6c06b68
MG
169extern void hide_boot_cursor(bool hide);
170
247ff8e6
AC
171/* keyboard provided interfaces */
172extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
079c9534
AC
173extern int vt_do_kdskbmode(int console, unsigned int arg);
174extern int vt_do_kdskbmeta(int console, unsigned int arg);
175extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
176 int perm);
177extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
178 int perm, int console);
179extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
180 int perm);
181extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
182extern int vt_do_kdgkbmode(int console);
183extern int vt_do_kdgkbmeta(int console);
184extern void vt_reset_unicode(int console);
185extern int vt_get_shift_state(void);
186extern void vt_reset_keyboard(int console);
187extern int vt_get_leds(int console, int flag);
188extern int vt_get_kbd_mode_bit(int console, int bit);
189extern void vt_set_kbd_mode_bit(int console, int bit);
190extern void vt_clr_kbd_mode_bit(int console, int bit);
191extern void vt_set_led_state(int console, int leds);
192extern void vt_set_led_state(int console, int leds);
193extern void vt_kbd_con_start(int console);
194extern void vt_kbd_con_stop(int console);
195
35cc56f9
JS
196void vc_scrolldelta_helper(struct vc_data *c, int lines,
197 unsigned int rolled_over, void *_base, unsigned int size);
247ff8e6 198
1da177e4 199#endif /* _VT_KERN_H */