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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/vt.h>
10#include <linux/kd.h>
11#include <linux/tty.h>
Matthias Kaehlckec831c332007-05-08 00:39:49 -070012#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/console_struct.h>
14#include <linux/mm.h>
David Woodhousea29ccf6f82008-06-03 14:59:40 +010015#include <linux/consolemap.h>
Alan Coxa5eb5622009-09-19 13:13:25 -070016#include <linux/notifier.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
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);
Jon Smirla8f340e2006-07-10 04:44:12 -070032extern int fg_console, last_console, want_console;
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
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);
Alan Coxca9bda02006-09-29 02:00:03 -070039void vc_deallocate(unsigned int console);
Linus Torvalds1da177e2005-04-16 15:20:36 -070040void 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, int lines);
49void scrollfront(struct vc_data *vc, int lines);
50void update_region(struct vc_data *vc, unsigned long start, int count);
51void redraw_screen(struct vc_data *vc, int is_switch);
52#define update_screen(x) redraw_screen(x, 0)
53#define switch_screen(x) redraw_screen(x, 1)
54
55struct tty_struct;
56int tioclinux(struct tty_struct *tty, unsigned long arg);
57
David Woodhousea29ccf6f82008-06-03 14:59:40 +010058#ifdef CONFIG_CONSOLE_TRANSLATIONS
Linus Torvalds1da177e2005-04-16 15:20:36 -070059/* consolemap.c */
60
61struct unimapinit;
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, struct unimapinit *ui);
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);
73void con_protect_unimap(struct vc_data *vc, int rdonly);
74int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
75
David Woodhousea29ccf6f82008-06-03 14:59:40 +010076#define vc_translate(vc, c) ((vc)->vc_translate[(c) | \
Tim Bird4744b432008-08-01 14:05:50 -070077 ((vc)->vc_toggle_meta ? 0x80 : 0)])
David Woodhousea29ccf6f82008-06-03 14:59:40 +010078#else
Kevin Winchester75e0b942010-07-10 18:57:56 -030079static inline int con_set_trans_old(unsigned char __user *table)
80{
81 return 0;
82}
83static inline int con_get_trans_old(unsigned char __user *table)
84{
85 return -EINVAL;
86}
87static inline int con_set_trans_new(unsigned short __user *table)
88{
89 return 0;
90}
91static inline int con_get_trans_new(unsigned short __user *table)
92{
93 return -EINVAL;
94}
95static inline int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
96{
97 return 0;
98}
99static inline
100int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
101{
102 return 0;
103}
104static inline
105int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
106 struct unipair __user *list)
107{
108 return -EINVAL;
109}
110static inline int con_set_default_unimap(struct vc_data *vc)
111{
112 return 0;
113}
114static inline void con_free_unimap(struct vc_data *vc)
115{
116}
117static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
118{
119}
120static inline
121int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
122{
123 return 0;
124}
David Woodhousea29ccf6f82008-06-03 14:59:40 +0100125
126#define vc_translate(vc, c) (c)
127#endif
128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129/* vt.c */
Alan Cox8b92e872009-09-19 13:13:24 -0700130void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
131int vt_waitactive(int n);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132void change_console(struct vc_data *new_vc);
133void reset_vc(struct vc_data *vc);
Antonino A. Daplas623e71b2007-07-17 04:05:28 -0700134extern int unbind_con_driver(const struct consw *csw, int first, int last,
135 int deflt);
Alan Coxd81ed102008-10-13 10:41:42 +0100136int vty_init(const struct file_operations *console_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
Jesse Barnes8fd4bd22010-06-23 12:56:12 -0700138static inline bool vt_force_oops_output(struct vc_data *vc)
139{
140 if (oops_in_progress && vc->vc_panic_force_write)
141 return true;
142 return false;
143}
144
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145/*
146 * vc_screen.c shares this temporary buffer with the console write code so that
147 * we can easily avoid touching user space while holding the console spinlock.
148 */
149
150#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
151extern char con_buf[CON_BUF_SIZE];
Matthias Kaehlckec831c332007-05-08 00:39:49 -0700152extern struct mutex con_buf_mtx;
Andrew Johnsonb257bc02007-03-16 13:38:24 -0800153extern char vt_dont_switch;
Bill Nottingham2e8ecb92007-10-16 23:29:38 -0700154extern int default_utf8;
Matthew Garrettf6c06b62009-11-13 15:14:11 -0500155extern int global_cursor_default;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
Eric W. Biederman81af8d62006-10-02 02:17:13 -0700157struct vt_spawn_console {
158 spinlock_t lock;
159 struct pid *pid;
160 int sig;
161};
162extern struct vt_spawn_console vt_spawn_con;
163
Alan Cox8d233552009-09-19 13:13:25 -0700164extern int vt_move_to_console(unsigned int vt, int alloc);
Alan Coxa5eb5622009-09-19 13:13:25 -0700165
166/* Interfaces for VC notification of character events (for accessibility etc) */
167
168struct vt_notifier_param {
169 struct vc_data *vc; /* VC on which the update happened */
170 unsigned int c; /* Printed char */
171};
172
173extern int register_vt_notifier(struct notifier_block *nb);
174extern int unregister_vt_notifier(struct notifier_block *nb);
175
Matthew Garrettf6c06b62009-11-13 15:14:11 -0500176extern void hide_boot_cursor(bool hide);
177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178#endif /* _VT_KERN_H */