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 #include <linux/kd.h>
  12 #include <linux/tty.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
  28 extern struct vt_struct {
  29         int vc_num;                             /* The console number */
  30         unsigned char   vc_mode;                /* KD_TEXT, ... */
  31         struct vt_mode  vt_mode;
  32         int             vt_pid;
  33         int             vt_newvt;
  34         wait_queue_head_t paste_wait;
  35 } *vt_cons[MAX_NR_CONSOLES];
  36
  37 extern void kd_mksound(unsigned int hz, unsigned int ticks);
  38 extern int kbd_rate(struct kbd_repeat *rep);
  39
  40 /* console.c */
  41
  42 int vc_allocate(unsigned int console);
  43 int vc_cons_allocated(unsigned int console);
  44 int vc_resize(int currcons, unsigned int cols, unsigned int lines);
  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 entering_gfx);
  49 void do_unblank_screen(int leaving_gfx);
  50 void unblank_screen(void);
  51 void poke_blanked_console(void);
  52 int con_font_op(int currcons, struct console_font_op *op);
  53 int con_font_set(int currcons, struct console_font_op *op);
  54 int con_font_get(int currcons, struct console_font_op *op);
  55 int con_font_default(int currcons, struct console_font_op *op);
  56 int con_font_copy(int currcons, struct console_font_op *op);
  57 int con_set_cmap(unsigned char __user *cmap);
  58 int con_get_cmap(unsigned char __user *cmap);
  59 void scrollback(int);
  60 void scrollfront(int);
  61 void update_region(int currcons, unsigned long start, int count);
  62 void redraw_screen(int new_console, int is_switch);
  63 #define update_screen(x) redraw_screen(x, 0)
  64 #define switch_screen(x) redraw_screen(x, 1)
  65
  66 struct tty_struct;
  67 int tioclinux(struct tty_struct *tty, unsigned long arg);
  68
  69 /* consolemap.c */
  70
  71 struct unimapinit;
  72 struct unipair;
  73
  74 int con_set_trans_old(unsigned char __user * table);
  75 int con_get_trans_old(unsigned char __user * table);
  76 int con_set_trans_new(unsigned short __user * table);
  77 int con_get_trans_new(unsigned short __user * table);
  78 int con_clear_unimap(int currcons, struct unimapinit *ui);
  79 int con_set_unimap(int currcons, ushort ct, struct unipair __user *list);
  80 int con_get_unimap(int currcons, ushort ct, ushort __user *uct, struct unipair __user *list);
  81 int con_set_default_unimap(int currcons);
  82 void con_free_unimap(int currcons);
  83 void con_protect_unimap(int currcons, int rdonly);
  84 int con_copy_unimap(int dstcons, int srccons);
  85
  86 /* vt.c */
  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
  92 /*
  93  * vc_screen.c shares this temporary buffer with the console write code so that
  94  * we can easily avoid touching user space while holding the console spinlock.
  95  */
  96 #define CON_BUF_SIZE    PAGE_SIZE
  97 extern char con_buf[CON_BUF_SIZE];
  98 extern struct semaphore con_buf_sem;
  99
 100 #endif /* _VT_KERN_H */