linux/include/linux/vt_kern.h
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   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);
  39void 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, 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
  58#ifdef CONFIG_CONSOLE_TRANSLATIONS
  59/* 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);
  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, struct unimapinit *ui)
  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 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
 194
 195#endif /* _VT_KERN_H */
 196
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