include/linux/vt_kern.h

   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);
  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 unipair;
  63
  64 int con_set_trans_old(unsigned char __user * table);
  65 int con_get_trans_old(unsigned char __user * table);
  66 int con_set_trans_new(unsigned short __user * table);
  67 int con_get_trans_new(unsigned short __user * table);
  68 int con_clear_unimap(struct vc_data *vc);
  69 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
  70 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
  71 int con_set_default_unimap(struct vc_data *vc);
  72 void con_free_unimap(struct vc_data *vc);
  73 int 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
  78 static inline int con_set_trans_old(unsigned char __user *table)
  79 {
  80         return 0;
  81 }
  82 static inline int con_get_trans_old(unsigned char __user *table)
  83 {
  84         return -EINVAL;
  85 }
  86 static inline int con_set_trans_new(unsigned short __user *table)
  87 {
  88         return 0;
  89 }
  90 static inline int con_get_trans_new(unsigned short __user *table)
  91 {
  92         return -EINVAL;
  93 }
  94 static inline int con_clear_unimap(struct vc_data *vc)
  95 {
  96         return 0;
  97 }
  98 static inline
  99 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
 100 {
 101         return 0;
 102 }
 103 static inline
 104 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
 105                    struct unipair __user *list)
 106 {
 107         return -EINVAL;
 108 }
 109 static inline int con_set_default_unimap(struct vc_data *vc)
 110 {
 111         return 0;
 112 }
 113 static inline void con_free_unimap(struct vc_data *vc)
 114 {
 115 }
 116 static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
 117 {
 118 }
 119 static inline
 120 int 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 */
 129 void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
 130 int vt_waitactive(int n);
 131 void change_console(struct vc_data *new_vc);
 132 void reset_vc(struct vc_data *vc);
 133 extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
 134                              int deflt);
 135 int vty_init(const struct file_operations *console_fops);
 136
 137 static 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
 144 extern char vt_dont_switch;
 145 extern int default_utf8;
 146 extern int global_cursor_default;
 147
 148 struct vt_spawn_console {
 149         spinlock_t lock;
 150         struct pid *pid;
 151         int sig;
 152 };
 153 extern struct vt_spawn_console vt_spawn_con;
 154
 155 extern int vt_move_to_console(unsigned int vt, int alloc);
 156
 157 /* Interfaces for VC notification of character events (for accessibility etc) */
 158
 159 struct vt_notifier_param {
 160         struct vc_data *vc;     /* VC on which the update happened */
 161         unsigned int c;         /* Printed char */
 162 };
 163
 164 extern int register_vt_notifier(struct notifier_block *nb);
 165 extern int unregister_vt_notifier(struct notifier_block *nb);
 166
 167 extern void hide_boot_cursor(bool hide);
 168
 169 /* keyboard  provided interfaces */
 170 extern int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
 171 extern int vt_do_kdskbmode(int console, unsigned int arg);
 172 extern int vt_do_kdskbmeta(int console, unsigned int arg);
 173 extern int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
 174                                                                 int perm);
 175 extern int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe,
 176                                         int perm, int console);
 177 extern int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb,
 178                                         int perm);
 179 extern int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
 180 extern int vt_do_kdgkbmode(int console);
 181 extern int vt_do_kdgkbmeta(int console);
 182 extern void vt_reset_unicode(int console);
 183 extern int vt_get_shift_state(void);
 184 extern void vt_reset_keyboard(int console);
 185 extern int vt_get_leds(int console, int flag);
 186 extern int vt_get_kbd_mode_bit(int console, int bit);
 187 extern void vt_set_kbd_mode_bit(int console, int bit);
 188 extern void vt_clr_kbd_mode_bit(int console, int bit);
 189 extern void vt_set_led_state(int console, int leds);
 190 extern void vt_set_led_state(int console, int leds);
 191 extern void vt_kbd_con_start(int console);
 192 extern void vt_kbd_con_stop(int console);
 193
 194 void 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 */