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