Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _VT_KERN_H
2#define _VT_KERN_H
3
4/*
5 * this really is an extension of the vc_cons structure in console.c, but
6 * with information needed by the vt package
7 */
8
9#include <linux/vt.h>
10#include <linux/kd.h>
11#include <linux/tty.h>
12#include <linux/mutex.h>
13#include <linux/console_struct.h>
14#include <linux/mm.h>
15#include <linux/consolemap.h>
16#include <linux/notifier.h>
17
18/*
19 * Presently, a lot of graphics programs do not restore the contents of
20 * the higher font pages. Defining this flag will avoid use of them, but
21 * will lose support for PIO_FONTRESET. Note that many font operations are
22 * not likely to work with these programs anyway; they need to be
23 * fixed. The linux/Documentation directory includes a code snippet
24 * to save and restore the text font.
25 */
26#ifdef CONFIG_VGA_CONSOLE
27#define BROKEN_GRAPHICS_PROGRAMS 1
28#endif
29
30extern void kd_mksound(unsigned int hz, unsigned int ticks);
31extern int kbd_rate(struct kbd_repeat *rep);
32extern int fg_console, last_console, want_console;
33
34/* console.c */
35
36int vc_allocate(unsigned int console);
37int vc_cons_allocated(unsigned int console);
38int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
39struct vc_data *vc_deallocate(unsigned int console);
40void reset_palette(struct vc_data *vc);
41void do_blank_screen(int entering_gfx);
42void do_unblank_screen(int leaving_gfx);
43void unblank_screen(void);
44void poke_blanked_console(void);
45int con_font_op(struct vc_data *vc, struct console_font_op *op);
46int con_set_cmap(unsigned char __user *cmap);
47int con_get_cmap(unsigned char __user *cmap);
48void scrollback(struct vc_data *vc);
49void scrollfront(struct vc_data *vc, int lines);
50void clear_buffer_attributes(struct vc_data *vc);
51void update_region(struct vc_data *vc, unsigned long start, int count);
52void redraw_screen(struct vc_data *vc, int is_switch);
53#define update_screen(x) redraw_screen(x, 0)
54#define switch_screen(x) redraw_screen(x, 1)
55
56struct tty_struct;
57int tioclinux(struct tty_struct *tty, unsigned long arg);
58
59#ifdef CONFIG_CONSOLE_TRANSLATIONS
60/* consolemap.c */
61
62struct unipair;
63
64int con_set_trans_old(unsigned char __user * table);
65int con_get_trans_old(unsigned char __user * table);
66int con_set_trans_new(unsigned short __user * table);
67int con_get_trans_new(unsigned short __user * table);
68int con_clear_unimap(struct vc_data *vc);
69int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
70int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
71int con_set_default_unimap(struct vc_data *vc);
72void con_free_unimap(struct vc_data *vc);
73int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
74
75#define vc_translate(vc, c) ((vc)->vc_translate[(c) | \
76 ((vc)->vc_toggle_meta ? 0x80 : 0)])
77#else
78static inline int con_set_trans_old(unsigned char __user *table)
79{
80 return 0;
81}
82static inline int con_get_trans_old(unsigned char __user *table)
83{
84 return -EINVAL;
85}
86static inline int con_set_trans_new(unsigned short __user *table)
87{
88 return 0;
89}
90static inline int con_get_trans_new(unsigned short __user *table)
91{
92 return -EINVAL;
93}
94static inline int con_clear_unimap(struct vc_data *vc)
95{
96 return 0;
97}
98static inline
99int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
100{
101 return 0;
102}
103static inline
104int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
105 struct unipair __user *list)
106{
107 return -EINVAL;
108}
109static inline int con_set_default_unimap(struct vc_data *vc)
110{
111 return 0;
112}
113static inline void con_free_unimap(struct vc_data *vc)
114{
115}
116static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
117{
118}
119static inline
120int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
121{
122 return 0;
123}
124
125#define vc_translate(vc, c) (c)
126#endif
127
128/* vt.c */
129void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
130int vt_waitactive(int n);
131void change_console(struct vc_data *new_vc);
132void reset_vc(struct vc_data *vc);
133extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
134 int deflt);
135int vty_init(const struct file_operations *console_fops);
136
137static inline bool vt_force_oops_output(struct vc_data *vc)
138{
139 if (oops_in_progress && vc->vc_panic_force_write && panic_timeout >= 0)
140 return true;
141 return false;
142}
143
144extern char vt_dont_switch;
145extern int default_utf8;
146extern int global_cursor_default;
147
148struct vt_spawn_console {
149 spinlock_t lock;
150 struct pid *pid;
151 int sig;
152};
153extern struct vt_spawn_console vt_spawn_con;
154
155extern int vt_move_to_console(unsigned int vt, int alloc);
156
157/* Interfaces for VC notification of character events (for accessibility etc) */
158
159struct vt_notifier_param {
160 struct vc_data *vc; /* VC on which the update happened */
161 unsigned int c; /* Printed char */
162};
163
164extern int register_vt_notifier(struct notifier_block *nb);
165extern int unregister_vt_notifier(struct notifier_block *nb);
166
167extern void hide_boot_cursor(bool hide);
168
169/* keyboard provided interfaces */
170extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
171extern int vt_do_kdskbmode(int console, unsigned int arg);
172extern int vt_do_kdskbmeta(int console, unsigned int arg);
173extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
174 int perm);
175extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
176 int perm, int console);
177extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
178 int perm);
179extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
180extern int vt_do_kdgkbmode(int console);
181extern int vt_do_kdgkbmeta(int console);
182extern void vt_reset_unicode(int console);
183extern int vt_get_shift_state(void);
184extern void vt_reset_keyboard(int console);
185extern int vt_get_leds(int console, int flag);
186extern int vt_get_kbd_mode_bit(int console, int bit);
187extern void vt_set_kbd_mode_bit(int console, int bit);
188extern void vt_clr_kbd_mode_bit(int console, int bit);
189extern void vt_set_led_state(int console, int leds);
190extern void vt_set_led_state(int console, int leds);
191extern void vt_kbd_con_start(int console);
192extern void vt_kbd_con_stop(int console);
193
194void vc_scrolldelta_helper(struct vc_data *c, int lines,
195 unsigned int rolled_over, void *_base, unsigned int size);
196
197#endif /* _VT_KERN_H */