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 struct vc_data *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 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
con_set_trans_old(unsigned char __user * table)79 static inline int con_set_trans_old(unsigned char __user *table)
80 {
81 return 0;
82 }
con_get_trans_old(unsigned char __user * table)83 static inline int con_get_trans_old(unsigned char __user *table)
84 {
85 return -EINVAL;
86 }
con_set_trans_new(unsigned short __user * table)87 static inline int con_set_trans_new(unsigned short __user *table)
88 {
89 return 0;
90 }
con_get_trans_new(unsigned short __user * table)91 static inline int con_get_trans_new(unsigned short __user *table)
92 {
93 return -EINVAL;
94 }
con_clear_unimap(struct vc_data * vc,struct unimapinit * ui)95 static inline int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
96 {
97 return 0;
98 }
99 static inline
con_set_unimap(struct vc_data * vc,ushort ct,struct unipair __user * list)100 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
101 {
102 return 0;
103 }
104 static inline
con_get_unimap(struct vc_data * vc,ushort ct,ushort __user * uct,struct unipair __user * list)105 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
106 struct unipair __user *list)
107 {
108 return -EINVAL;
109 }
con_set_default_unimap(struct vc_data * vc)110 static inline int con_set_default_unimap(struct vc_data *vc)
111 {
112 return 0;
113 }
con_free_unimap(struct vc_data * vc)114 static inline void con_free_unimap(struct vc_data *vc)
115 {
116 }
con_protect_unimap(struct vc_data * vc,int rdonly)117 static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
118 {
119 }
120 static inline
con_copy_unimap(struct vc_data * dst_vc,struct vc_data * src_vc)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);
134 extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
135 int deflt);
136 extern int unbind_con_driver(const struct consw *csw, int first, int last,
137 int deflt);
138 int vty_init(const struct file_operations *console_fops);
139
vt_force_oops_output(struct vc_data * vc)140 static inline bool vt_force_oops_output(struct vc_data *vc)
141 {
142 if (oops_in_progress && vc->vc_panic_force_write && panic_timeout >= 0)
143 return true;
144 return false;
145 }
146
147 extern char vt_dont_switch;
148 extern int default_utf8;
149 extern int global_cursor_default;
150
151 struct vt_spawn_console {
152 spinlock_t lock;
153 struct pid *pid;
154 int sig;
155 };
156 extern struct vt_spawn_console vt_spawn_con;
157
158 extern int vt_move_to_console(unsigned int vt, int alloc);
159
160 /* Interfaces for VC notification of character events (for accessibility etc) */
161
162 struct vt_notifier_param {
163 struct vc_data *vc; /* VC on which the update happened */
164 unsigned int c; /* Printed char */
165 };
166
167 extern int register_vt_notifier(struct notifier_block *nb);
168 extern int unregister_vt_notifier(struct notifier_block *nb);
169
170 extern void hide_boot_cursor(bool hide);
171
172 /* keyboard provided interfaces */
173 extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
174 extern int vt_do_kdskbmode(int console, unsigned int arg);
175 extern int vt_do_kdskbmeta(int console, unsigned int arg);
176 extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
177 int perm);
178 extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
179 int perm, int console);
180 extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
181 int perm);
182 extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
183 extern int vt_do_kdgkbmode(int console);
184 extern int vt_do_kdgkbmeta(int console);
185 extern void vt_reset_unicode(int console);
186 extern int vt_get_shift_state(void);
187 extern void vt_reset_keyboard(int console);
188 extern int vt_get_leds(int console, int flag);
189 extern int vt_get_kbd_mode_bit(int console, int bit);
190 extern void vt_set_kbd_mode_bit(int console, int bit);
191 extern void vt_clr_kbd_mode_bit(int console, int bit);
192 extern void vt_set_led_state(int console, int leds);
193 extern void vt_set_led_state(int console, int leds);
194 extern void vt_kbd_con_start(int console);
195 extern void vt_kbd_con_stop(int console);
196
197
198 #endif /* _VT_KERN_H */
199