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
  16/*
  17 * Presently, a lot of graphics programs do not restore the contents of
  18 * the higher font pages.  Defining this flag will avoid use of them, but
  19 * will lose support for PIO_FONTRESET.  Note that many font operations are
  20 * not likely to work with these programs anyway; they need to be
  21 * fixed.  The linux/Documentation directory includes a code snippet
  22 * to save and restore the text font.
  23 */
  24#ifdef CONFIG_VGA_CONSOLE
  25#define BROKEN_GRAPHICS_PROGRAMS 1
  26#endif
  27
  28extern void kd_mksound(unsigned int hz, unsigned int ticks);
  29extern int kbd_rate(struct kbd_repeat *rep);
  30extern int fg_console, last_console, want_console;
  31
  32/* console.c */
  33
  34int vc_allocate(unsigned int console);
  35int vc_cons_allocated(unsigned int console);
  36int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
  37int vc_lock_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/* consolemap.c */
  58
  59struct unimapinit;
  60struct unipair;
  61
  62int con_set_trans_old(unsigned char __user * table);
  63int con_get_trans_old(unsigned char __user * table);
  64int con_set_trans_new(unsigned short __user * table);
  65int con_get_trans_new(unsigned short __user * table);
  66int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
  67int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
  68int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
  69int con_set_default_unimap(struct vc_data *vc);
  70void con_free_unimap(struct vc_data *vc);
  71void con_protect_unimap(struct vc_data *vc, int rdonly);
  72int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
  73
  74/* vt.c */
  75int vt_waitactive(int vt);
  76void change_console(struct vc_data *new_vc);
  77void reset_vc(struct vc_data *vc);
  78extern int unbind_con_driver(const struct consw *csw, int first, int last,
  79                             int deflt);
  80
  81/*
  82 * vc_screen.c shares this temporary buffer with the console write code so that
  83 * we can easily avoid touching user space while holding the console spinlock.
  84 */
  85
  86#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
  87extern char con_buf[CON_BUF_SIZE];
  88extern struct mutex con_buf_mtx;
  89extern char vt_dont_switch;
  90extern int default_utf8;
  91
  92struct vt_spawn_console {
  93        spinlock_t lock;
  94        struct pid *pid;
  95        int sig;
  96};
  97extern struct vt_spawn_console vt_spawn_con;
  98
  99#endif /* _VT_KERN_H */
 100