Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 3fd07912909cddc74a30a5d3983d906563017e66 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _VT_KERN_H
#define _VT_KERN_H

/*
 * this really is an extension of the vc_cons structure in console.c, but
 * with information needed by the vt package
 */

#include <linux/vt.h>
#include <linux/kd.h>
#include <linux/tty.h>
#include <linux/mutex.h>
#include <linux/console_struct.h>
#include <linux/mm.h>
#include <linux/consolemap.h>
#include <linux/notifier.h>

/*
 * Presently, a lot of graphics programs do not restore the contents of
 * the higher font pages.  Defining this flag will avoid use of them, but
 * will lose support for PIO_FONTRESET.  Note that many font operations are
 * not likely to work with these programs anyway; they need to be
 * fixed.  The linux/Documentation directory includes a code snippet
 * to save and restore the text font.
 */
#ifdef CONFIG_VGA_CONSOLE
#define BROKEN_GRAPHICS_PROGRAMS 1
#endif

extern void kd_mksound(unsigned int hz, unsigned int ticks);
extern int kbd_rate(struct kbd_repeat *rep);
extern int fg_console, last_console, want_console;

/* console.c */

int vc_allocate(unsigned int console);
int vc_cons_allocated(unsigned int console);
int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
struct vc_data *vc_deallocate(unsigned int console);
void reset_palette(struct vc_data *vc);
void do_blank_screen(int entering_gfx);
void do_unblank_screen(int leaving_gfx);
void unblank_screen(void);
void poke_blanked_console(void);
int con_font_op(struct vc_data *vc, struct console_font_op *op);
int con_set_cmap(unsigned char __user *cmap);
int con_get_cmap(unsigned char __user *cmap);
void scrollback(struct vc_data *vc);
void scrollfront(struct vc_data *vc, int lines);
void clear_buffer_attributes(struct vc_data *vc);
void update_region(struct vc_data *vc, unsigned long start, int count);
void redraw_screen(struct vc_data *vc, int is_switch);
#define update_screen(x) redraw_screen(x, 0)
#define switch_screen(x) redraw_screen(x, 1)

struct tty_struct;
int tioclinux(struct tty_struct *tty, unsigned long arg);

#ifdef CONFIG_CONSOLE_TRANSLATIONS
/* consolemap.c */

struct unipair;

int con_set_trans_old(unsigned char __user * table);
int con_get_trans_old(unsigned char __user * table);
int con_set_trans_new(unsigned short __user * table);
int con_get_trans_new(unsigned short __user * table);
int con_clear_unimap(struct vc_data *vc);
int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
int con_set_default_unimap(struct vc_data *vc);
void con_free_unimap(struct vc_data *vc);
int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);

#define vc_translate(vc, c) ((vc)->vc_translate[(c) |			\
					((vc)->vc_toggle_meta ? 0x80 : 0)])
#else
static inline int con_set_trans_old(unsigned char __user *table)
{
	return 0;
}
static inline int con_get_trans_old(unsigned char __user *table)
{
	return -EINVAL;
}
static inline int con_set_trans_new(unsigned short __user *table)
{
	return 0;
}
static inline int con_get_trans_new(unsigned short __user *table)
{
	return -EINVAL;
}
static inline int con_clear_unimap(struct vc_data *vc)
{
	return 0;
}
static inline
int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
{
	return 0;
}
static inline
int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
		   struct unipair __user *list)
{
	return -EINVAL;
}
static inline int con_set_default_unimap(struct vc_data *vc)
{
	return 0;
}
static inline void con_free_unimap(struct vc_data *vc)
{
}
static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
{
}
static inline
int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
{
	return 0;
}

#define vc_translate(vc, c) (c)
#endif

/* vt.c */
void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
int vt_waitactive(int n);
void change_console(struct vc_data *new_vc);
void reset_vc(struct vc_data *vc);
extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
			     int deflt);
int vty_init(const struct file_operations *console_fops);

static inline bool vt_force_oops_output(struct vc_data *vc)
{
	if (oops_in_progress && vc->vc_panic_force_write  && panic_timeout >= 0)
		return true;
	return false;
}

extern char vt_dont_switch;
extern int default_utf8;
extern int global_cursor_default;

struct vt_spawn_console {
	spinlock_t lock;
	struct pid *pid;
	int sig;
};
extern struct vt_spawn_console vt_spawn_con;

extern int vt_move_to_console(unsigned int vt, int alloc);

/* Interfaces for VC notification of character events (for accessibility etc) */

struct vt_notifier_param {
	struct vc_data *vc;	/* VC on which the update happened */
	unsigned int c;		/* Printed char */
};

extern int register_vt_notifier(struct notifier_block *nb);
extern int unregister_vt_notifier(struct notifier_block *nb);

extern void hide_boot_cursor(bool hide);

/* keyboard  provided interfaces */
extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
extern int vt_do_kdskbmode(int console, unsigned int arg);
extern int vt_do_kdskbmeta(int console, unsigned int arg);
extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
								int perm);
extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
					int perm, int console);
extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
                                        int perm);
extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
extern int vt_do_kdgkbmode(int console);
extern int vt_do_kdgkbmeta(int console);
extern void vt_reset_unicode(int console);
extern int vt_get_shift_state(void);
extern void vt_reset_keyboard(int console);
extern int vt_get_leds(int console, int flag);
extern int vt_get_kbd_mode_bit(int console, int bit);
extern void vt_set_kbd_mode_bit(int console, int bit);
extern void vt_clr_kbd_mode_bit(int console, int bit);
extern void vt_set_led_state(int console, int leds);
extern void vt_set_led_state(int console, int leds);
extern void vt_kbd_con_start(int console);
extern void vt_kbd_con_stop(int console);

void vc_scrolldelta_helper(struct vc_data *c, int lines,
		unsigned int rolled_over, void *_base, unsigned int size);

#endif /* _VT_KERN_H */