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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 | ||
31 | extern void kd_mksound(unsigned int hz, unsigned int ticks); | |
32 | extern int kbd_rate(struct kbd_repeat *rep); | |
33 | extern int fg_console, last_console, want_console; | |
34 | ||
35 | /* console.c */ | |
36 | ||
37 | int vc_allocate(unsigned int console); | |
38 | int vc_cons_allocated(unsigned int console); | |
39 | int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); | |
40 | struct vc_data *vc_deallocate(unsigned int console); | |
41 | void reset_palette(struct vc_data *vc); | |
42 | void do_blank_screen(int entering_gfx); | |
43 | void do_unblank_screen(int leaving_gfx); | |
44 | void unblank_screen(void); | |
45 | void poke_blanked_console(void); | |
46 | int con_font_op(struct vc_data *vc, struct console_font_op *op); | |
47 | int con_set_cmap(unsigned char __user *cmap); | |
48 | int con_get_cmap(unsigned char __user *cmap); | |
49 | void scrollback(struct vc_data *vc); | |
50 | void scrollfront(struct vc_data *vc, int lines); | |
51 | void clear_buffer_attributes(struct vc_data *vc); | |
52 | void update_region(struct vc_data *vc, unsigned long start, int count); | |
53 | void 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 | ||
57 | struct tty_struct; | |
58 | int tioclinux(struct tty_struct *tty, unsigned long arg); | |
59 | ||
60 | #ifdef CONFIG_CONSOLE_TRANSLATIONS | |
61 | /* consolemap.c */ | |
62 | ||
63 | struct unipair; | |
64 | ||
65 | int con_set_trans_old(unsigned char __user * table); | |
66 | int con_get_trans_old(unsigned char __user * table); | |
67 | int con_set_trans_new(unsigned short __user * table); | |
68 | int con_get_trans_new(unsigned short __user * table); | |
69 | int con_clear_unimap(struct vc_data *vc); | |
70 | int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); | |
71 | int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); | |
72 | int con_set_default_unimap(struct vc_data *vc); | |
73 | void con_free_unimap(struct vc_data *vc); | |
74 | int 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 | |
79 | static inline int con_set_trans_old(unsigned char __user *table) | |
80 | { | |
81 | return 0; | |
82 | } | |
83 | static inline int con_get_trans_old(unsigned char __user *table) | |
84 | { | |
85 | return -EINVAL; | |
86 | } | |
87 | static inline int con_set_trans_new(unsigned short __user *table) | |
88 | { | |
89 | return 0; | |
90 | } | |
91 | static inline int con_get_trans_new(unsigned short __user *table) | |
92 | { | |
93 | return -EINVAL; | |
94 | } | |
95 | static inline int con_clear_unimap(struct vc_data *vc) | |
96 | { | |
97 | return 0; | |
98 | } | |
99 | static inline | |
100 | int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) | |
101 | { | |
102 | return 0; | |
103 | } | |
104 | static inline | |
105 | int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, | |
106 | struct unipair __user *list) | |
107 | { | |
108 | return -EINVAL; | |
109 | } | |
110 | static inline int con_set_default_unimap(struct vc_data *vc) | |
111 | { | |
112 | return 0; | |
113 | } | |
114 | static inline void con_free_unimap(struct vc_data *vc) | |
115 | { | |
116 | } | |
117 | static inline void con_protect_unimap(struct vc_data *vc, int rdonly) | |
118 | { | |
119 | } | |
120 | static inline | |
121 | int 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 */ | |
130 | void vt_event_post(unsigned int event, unsigned int old, unsigned int new); | |
131 | int vt_waitactive(int n); | |
132 | void change_console(struct vc_data *new_vc); | |
133 | void reset_vc(struct vc_data *vc, int mode); | |
134 | ||
135 | extern int do_unbind_con_driver(const struct consw *csw, int first, int last, | |
136 | int deflt); | |
137 | int vty_init(const struct file_operations *console_fops); | |
138 | ||
139 | static inline bool vt_force_oops_output(struct vc_data *vc) | |
140 | { | |
141 | if (oops_in_progress && vc->vc_panic_force_write && panic_timeout >= 0) | |
142 | return true; | |
143 | return false; | |
144 | } | |
145 | ||
146 | extern char vt_dont_switch; | |
147 | extern int default_utf8; | |
148 | extern int global_cursor_default; | |
149 | ||
150 | struct vt_spawn_console { | |
151 | spinlock_t lock; | |
152 | struct pid *pid; | |
153 | int sig; | |
154 | }; | |
155 | extern struct vt_spawn_console vt_spawn_con; | |
156 | ||
157 | extern int vt_move_to_console(unsigned int vt, int alloc); | |
158 | ||
159 | /* Interfaces for VC notification of character events (for accessibility etc) */ | |
160 | ||
161 | struct vt_notifier_param { | |
162 | struct vc_data *vc; /* VC on which the update happened */ | |
163 | unsigned int c; /* Printed char */ | |
164 | }; | |
165 | ||
166 | extern int register_vt_notifier(struct notifier_block *nb); | |
167 | extern int unregister_vt_notifier(struct notifier_block *nb); | |
168 | ||
169 | extern void hide_boot_cursor(bool hide); | |
170 | ||
171 | /* keyboard provided interfaces */ | |
172 | extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm); | |
173 | extern int vt_do_kdskbmode(int console, unsigned int arg); | |
174 | extern int vt_do_kdskbmeta(int console, unsigned int arg); | |
175 | extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, | |
176 | int perm); | |
177 | extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, | |
178 | int perm, int console); | |
179 | extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, | |
180 | int perm); | |
181 | extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm); | |
182 | extern int vt_do_kdgkbmode(int console); | |
183 | extern int vt_do_kdgkbmeta(int console); | |
184 | extern void vt_reset_unicode(int console); | |
185 | extern int vt_get_shift_state(void); | |
186 | extern void vt_reset_keyboard(int console); | |
187 | extern int vt_get_leds(int console, int flag); | |
188 | extern int vt_get_kbd_mode_bit(int console, int bit); | |
189 | extern void vt_set_kbd_mode_bit(int console, int bit); | |
190 | extern void vt_clr_kbd_mode_bit(int console, int bit); | |
191 | extern void vt_set_led_state(int console, int leds); | |
192 | extern void vt_set_led_state(int console, int leds); | |
193 | extern void vt_kbd_con_start(int console); | |
194 | extern void vt_kbd_con_stop(int console); | |
195 | ||
196 | void vc_scrolldelta_helper(struct vc_data *c, int lines, | |
197 | unsigned int rolled_over, void *_base, unsigned int size); | |
198 | ||
199 | #endif /* _VT_KERN_H */ |