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