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
30 extern void kd_mksound(unsigned int hz, unsigned int ticks);
31 extern int kbd_rate(struct kbd_repeat *rep);
32 extern int fg_console, last_console, want_console;
33
34 /* console.c */
35
36 int vc_allocate(unsigned int console);
37 int vc_cons_allocated(unsigned int console);
38 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
39 void vc_deallocate(unsigned int console);
40 void reset_palette(struct vc_data *vc);
41 void do_blank_screen(int entering_gfx);
42 void do_unblank_screen(int leaving_gfx);
43 void unblank_screen(void);
44 void poke_blanked_console(void);
45 int con_font_op(struct vc_data *vc, struct console_font_op *op);
46 int con_set_cmap(unsigned char __user *cmap);
47 int con_get_cmap(unsigned char __user *cmap);
48 void scrollback(struct vc_data *vc, int lines);
49 void scrollfront(struct vc_data *vc, int lines);
50 void clear_buffer_attributes(struct vc_data *vc);
51 void update_region(struct vc_data *vc, unsigned long start, int count);
52 void 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
56 struct tty_struct;
57 int tioclinux(struct tty_struct *tty, unsigned long arg);
58
59 #ifdef CONFIG_CONSOLE_TRANSLATIONS
60 /* consolemap.c */
61
62 struct unimapinit;
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, struct unimapinit *ui);
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 void con_protect_unimap(struct vc_data *vc, int rdonly);
75 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
76
77 #define vc_translate(vc, c) ((vc)->vc_translate[(c) | \
78 ((vc)->vc_toggle_meta ? 0x80 : 0)])
79 #else
con_set_trans_old(unsigned char __user * table)80 static inline int con_set_trans_old(unsigned char __user *table)
81 {
82 return 0;
83 }
con_get_trans_old(unsigned char __user * table)84 static inline int con_get_trans_old(unsigned char __user *table)
85 {
86 return -EINVAL;
87 }
con_set_trans_new(unsigned short __user * table)88 static inline int con_set_trans_new(unsigned short __user *table)
89 {
90 return 0;
91 }
con_get_trans_new(unsigned short __user * table)92 static inline int con_get_trans_new(unsigned short __user *table)
93 {
94 return -EINVAL;
95 }
con_clear_unimap(struct vc_data * vc,struct unimapinit * ui)96 static inline int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
97 {
98 return 0;
99 }
100 static inline
con_set_unimap(struct vc_data * vc,ushort ct,struct unipair __user * list)101 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
102 {
103 return 0;
104 }
105 static inline
con_get_unimap(struct vc_data * vc,ushort ct,ushort __user * uct,struct unipair __user * list)106 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
107 struct unipair __user *list)
108 {
109 return -EINVAL;
110 }
con_set_default_unimap(struct vc_data * vc)111 static inline int con_set_default_unimap(struct vc_data *vc)
112 {
113 return 0;
114 }
con_free_unimap(struct vc_data * vc)115 static inline void con_free_unimap(struct vc_data *vc)
116 {
117 }
con_protect_unimap(struct vc_data * vc,int rdonly)118 static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
119 {
120 }
121 static inline
con_copy_unimap(struct vc_data * dst_vc,struct vc_data * src_vc)122 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
123 {
124 return 0;
125 }
126
127 #define vc_translate(vc, c) (c)
128 #endif
129
130 /* vt.c */
131 void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
132 int vt_waitactive(int n);
133 void change_console(struct vc_data *new_vc);
134 void reset_vc(struct vc_data *vc);
135 extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
136 int deflt);
137 extern int unbind_con_driver(const struct consw *csw, int first, int last,
138 int deflt);
139 int vty_init(const struct file_operations *console_fops);
140
vt_force_oops_output(struct vc_data * vc)141 static inline bool vt_force_oops_output(struct vc_data *vc)
142 {
143 if (oops_in_progress && vc->vc_panic_force_write && panic_timeout >= 0)
144 return true;
145 return false;
146 }
147
148 extern char vt_dont_switch;
149 extern int default_utf8;
150 extern int global_cursor_default;
151
152 struct vt_spawn_console {
153 spinlock_t lock;
154 struct pid *pid;
155 int sig;
156 };
157 extern struct vt_spawn_console vt_spawn_con;
158
159 extern int vt_move_to_console(unsigned int vt, int alloc);
160
161 /* Interfaces for VC notification of character events (for accessibility etc) */
162
163 struct vt_notifier_param {
164 struct vc_data *vc; /* VC on which the update happened */
165 unsigned int c; /* Printed char */
166 };
167
168 extern int register_vt_notifier(struct notifier_block *nb);
169 extern int unregister_vt_notifier(struct notifier_block *nb);
170
171 extern void hide_boot_cursor(bool hide);
172
173 /* keyboard provided interfaces */
174 extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
175 extern int vt_do_kdskbmode(int console, unsigned int arg);
176 extern int vt_do_kdskbmeta(int console, unsigned int arg);
177 extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
178 int perm);
179 extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
180 int perm, int console);
181 extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
182 int perm);
183 extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
184 extern int vt_do_kdgkbmode(int console);
185 extern int vt_do_kdgkbmeta(int console);
186 extern void vt_reset_unicode(int console);
187 extern int vt_get_shift_state(void);
188 extern void vt_reset_keyboard(int console);
189 extern int vt_get_leds(int console, int flag);
190 extern int vt_get_kbd_mode_bit(int console, int bit);
191 extern void vt_set_kbd_mode_bit(int console, int bit);
192 extern void vt_clr_kbd_mode_bit(int console, int bit);
193 extern void vt_set_led_state(int console, int leds);
194 extern void vt_set_led_state(int console, int leds);
195 extern void vt_kbd_con_start(int console);
196 extern void vt_kbd_con_stop(int console);
197
198
199 #endif /* _VT_KERN_H */
200