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/config.h>
  10 #include <linux/vt.h>
  11
  12 /*
  13  * Presently, a lot of graphics programs do not restore the contents of
  14  * the higher font pages.  Defining this flag will avoid use of them, but
  15  * will lose support for PIO_FONTRESET.  Note that many font operations are
  16  * not likely to work with these programs anyway; they need to be
  17  * fixed.  The linux/Documentation directory includes a code snippet
  18  * to save and restore the text font.
  19  */
  20 #ifdef CONFIG_VGA_CONSOLE
  21 #define BROKEN_GRAPHICS_PROGRAMS 1
  22 #endif
  23
  24 extern struct vt_struct {
  25         int vc_num;                             /* The console number */
  26         unsigned char   vc_mode;                /* KD_TEXT, ... */
  27         struct vt_mode  vt_mode;
  28         int             vt_pid;
  29         int             vt_newvt;
  30         wait_queue_head_t paste_wait;
  31 } *vt_cons[MAX_NR_CONSOLES];
  32
  33 void (*kd_mksound)(unsigned int hz, unsigned int ticks);
  34
  35 /* console.c */
  36
  37 struct console_font_op;
  38
  39 int vc_allocate(unsigned int console);
  40 int vc_cons_allocated(unsigned int console);
  41 int vc_resize(unsigned int lines, unsigned int cols,
  42               unsigned int first, unsigned int last);
  43 #define vc_resize_all(l, c) vc_resize(l, c, 0, MAX_NR_CONSOLES-1)
  44 #define vc_resize_con(l, c, x) vc_resize(l, c, x, x)
  45 void vc_disallocate(unsigned int console);
  46 void reset_palette(int currcons);
  47 void set_palette(int currcons);
  48 void do_blank_screen(int gfx_mode);
  49 void unblank_screen(void);
  50 void poke_blanked_console(void);
  51 int con_font_op(int currcons, struct console_font_op *op);
  52 int con_set_cmap(unsigned char *cmap);
  53 int con_get_cmap(unsigned char *cmap);
  54 void scrollback(int);
  55 void scrollfront(int);
  56 void update_region(int currcons, unsigned long start, int count);
  57 void redraw_screen(int new_console, int is_switch);
  58 #define update_screen(x) redraw_screen(x, 0)
  59 #define switch_screen(x) redraw_screen(x, 1)
  60
  61 struct tty_struct;
  62 int tioclinux(struct tty_struct *tty, unsigned long arg);
  63
  64 /* consolemap.c */
  65
  66 struct unimapinit;
  67 struct unipair;
  68
  69 int con_set_trans_old(unsigned char * table);
  70 int con_get_trans_old(unsigned char * table);
  71 int con_set_trans_new(unsigned short * table);
  72 int con_get_trans_new(unsigned short * table);
  73 int con_clear_unimap(int currcons, struct unimapinit *ui);
  74 int con_set_unimap(int currcons, ushort ct, struct unipair *list);
  75 int con_get_unimap(int currcons, ushort ct, ushort *uct, struct unipair *list);
  76 int con_set_default_unimap(int currcons);
  77 void con_free_unimap(int currcons);
  78 void con_protect_unimap(int currcons, int rdonly);
  79 int con_copy_unimap(int dstcons, int srccons);
  80
  81 /* vt.c */
  82
  83 extern unsigned int video_font_height;
  84 extern unsigned int default_font_height;
  85 extern unsigned int video_scan_lines;
  86
  87 void complete_change_console(unsigned int new_console);
  88 int vt_waitactive(int vt);
  89 void change_console(unsigned int);
  90 void reset_vc(unsigned int new_console);
  91 int vt_waitactive(int vt);
  92
  93 #endif /* _VT_KERN_H */