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/console_struct.h>
  13 #include <linux/mm.h>
  14
  15 /*
  16  * Presently, a lot of graphics programs do not restore the contents of
  17  * the higher font pages.  Defining this flag will avoid use of them, but
  18  * will lose support for PIO_FONTRESET.  Note that many font operations are
  19  * not likely to work with these programs anyway; they need to be
  20  * fixed.  The linux/Documentation directory includes a code snippet
  21  * to save and restore the text font.
  22  */
  23 #ifdef CONFIG_VGA_CONSOLE
  24 #define BROKEN_GRAPHICS_PROGRAMS 1
  25 #endif
  26
  27 extern void kd_mksound(unsigned int hz, unsigned int ticks);
  28 extern int kbd_rate(struct kbd_repeat *rep);
  29
  30 /* console.c */
  31
  32 int vc_allocate(unsigned int console);
  33 int vc_cons_allocated(unsigned int console);
  34 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
  35 void vc_disallocate(unsigned int console);
  36 void reset_palette(struct vc_data *vc);
  37 void do_blank_screen(int entering_gfx);
  38 void do_unblank_screen(int leaving_gfx);
  39 void unblank_screen(void);
  40 void poke_blanked_console(void);
  41 int con_font_op(struct vc_data *vc, struct console_font_op *op);
  42 int con_set_cmap(unsigned char __user *cmap);
  43 int con_get_cmap(unsigned char __user *cmap);
  44 void scrollback(struct vc_data *vc, int lines);
  45 void scrollfront(struct vc_data *vc, int lines);
  46 void update_region(struct vc_data *vc, unsigned long start, int count);
  47 void redraw_screen(struct vc_data *vc, int is_switch);
  48 #define update_screen(x) redraw_screen(x, 0)
  49 #define switch_screen(x) redraw_screen(x, 1)
  50
  51 struct tty_struct;
  52 int tioclinux(struct tty_struct *tty, unsigned long arg);
  53
  54 /* consolemap.c */
  55
  56 struct unimapinit;
  57 struct unipair;
  58
  59 int con_set_trans_old(unsigned char __user * table);
  60 int con_get_trans_old(unsigned char __user * table);
  61 int con_set_trans_new(unsigned short __user * table);
  62 int con_get_trans_new(unsigned short __user * table);
  63 int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
  64 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
  65 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
  66 int con_set_default_unimap(struct vc_data *vc);
  67 void con_free_unimap(struct vc_data *vc);
  68 void con_protect_unimap(struct vc_data *vc, int rdonly);
  69 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
  70
  71 /* vt.c */
  72 int vt_waitactive(int vt);
  73 void change_console(struct vc_data *new_vc);
  74 void reset_vc(struct vc_data *vc);
  75
  76 /*
  77  * vc_screen.c shares this temporary buffer with the console write code so that
  78  * we can easily avoid touching user space while holding the console spinlock.
  79  */
  80
  81 #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
  82 extern char con_buf[CON_BUF_SIZE];
  83 extern struct semaphore con_buf_sem;
  84
  85 #endif /* _VT_KERN_H */