LXR linux/include/linux/vt

   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
  17/*
  18 * Presently, a lot of graphics programs do not restore the contents of
  19 * the higher font pages.  Defining this flag will avoid use of them, but
  20 * will lose support for PIO_FONTRESET.  Note that many font operations are
  21 * not likely to work with these programs anyway; they need to be
  22 * fixed.  The linux/Documentation directory includes a code snippet
  23 * to save and restore the text font.
  24 */
  25#ifdef CONFIG_VGA_CONSOLE
  26#define BROKEN_GRAPHICS_PROGRAMS 1
  27#endif
  28
  29extern void kd_mksound(unsigned int hz, unsigned int ticks);
  30extern int kbd_rate(struct kbd_repeat *rep);
  31extern int fg_console, last_console, want_console;
  32
  33/* console.c */
  34
  35int vc_allocate(unsigned int console);
  36int vc_cons_allocated(unsigned int console);
  37int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
  38void vc_deallocate(unsigned int console);
  39void reset_palette(struct vc_data *vc);
  40void do_blank_screen(int entering_gfx);
  41void do_unblank_screen(int leaving_gfx);
  42void unblank_screen(void);
  43void poke_blanked_console(void);
  44int con_font_op(struct vc_data *vc, struct console_font_op *op);
  45int con_set_cmap(unsigned char __user *cmap);
  46int con_get_cmap(unsigned char __user *cmap);
  47void scrollback(struct vc_data *vc, int lines);
  48void scrollfront(struct vc_data *vc, int lines);
  49void update_region(struct vc_data *vc, unsigned long start, int count);
  50void redraw_screen(struct vc_data *vc, int is_switch);
  51#define update_screen(x) redraw_screen(x, 0)
  52#define switch_screen(x) redraw_screen(x, 1)
  53
  54struct tty_struct;
  55int tioclinux(struct tty_struct *tty, unsigned long arg);
  56
  57#ifdef CONFIG_CONSOLE_TRANSLATIONS
  58/* consolemap.c */
  59
  60struct unimapinit;
  61struct unipair;
  62
  63int con_set_trans_old(unsigned char __user * table);
  64int con_get_trans_old(unsigned char __user * table);
  65int con_set_trans_new(unsigned short __user * table);
  66int con_get_trans_new(unsigned short __user * table);
  67int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
  68int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
  69int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
  70int con_set_default_unimap(struct vc_data *vc);
  71void con_free_unimap(struct vc_data *vc);
  72void con_protect_unimap(struct vc_data *vc, int rdonly);
  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
  78#define con_set_trans_old(arg) (0)
  79#define con_get_trans_old(arg) (-EINVAL)
  80#define con_set_trans_new(arg) (0)
  81#define con_get_trans_new(arg) (-EINVAL)
  82#define con_clear_unimap(vc, ui) (0)
  83#define con_set_unimap(vc, ct, list) (0)
  84#define con_set_default_unimap(vc) (0)
  85#define con_copy_unimap(d, s) (0)
  86#define con_get_unimap(vc, ct, uct, list) (-EINVAL)
  87#define con_free_unimap(vc) do { ; } while (0)
  88#define con_protect_unimap(vc, rdonly) do { ; } while (0)
  89
  90#define vc_translate(vc, c) (c)
  91#endif
  92
  93/* vt.c */
  94int vt_waitactive(int vt);
  95void change_console(struct vc_data *new_vc);
  96void reset_vc(struct vc_data *vc);
  97extern int unbind_con_driver(const struct consw *csw, int first, int last,
  98                             int deflt);
  99int vty_init(const struct file_operations *console_fops);
 100
 101/*
 102 * vc_screen.c shares this temporary buffer with the console write code so that
 103 * we can easily avoid touching user space while holding the console spinlock.
 104 */
 105
 106#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
 107extern char con_buf[CON_BUF_SIZE];
 108extern struct mutex con_buf_mtx;
 109extern char vt_dont_switch;
 110extern int default_utf8;
 111
 112struct vt_spawn_console {
 113        spinlock_t lock;
 114        struct pid *pid;
 115        int sig;
 116};
 117extern struct vt_spawn_console vt_spawn_con;
 118
 119#endif /* _VT_KERN_H */
 120