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 extern int fg_console, last_console, want_console; 30 31 /* console.c */ 32 33 int vc_allocate(unsigned int console); 34 int vc_cons_allocated(unsigned int console); 35 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); 36 int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); 37 void vc_deallocate(unsigned int console); 38 void reset_palette(struct vc_data *vc); 39 void do_blank_screen(int entering_gfx); 40 void do_unblank_screen(int leaving_gfx); 41 void unblank_screen(void); 42 void poke_blanked_console(void); 43 int con_font_op(struct vc_data *vc, struct console_font_op *op); 44 int con_set_cmap(unsigned char __user *cmap); 45 int con_get_cmap(unsigned char __user *cmap); 46 void scrollback(struct vc_data *vc, int lines); 47 void scrollfront(struct vc_data *vc, int lines); 48 void update_region(struct vc_data *vc, unsigned long start, int count); 49 void redraw_screen(struct vc_data *vc, int is_switch); 50 #define update_screen(x) redraw_screen(x, 0) 51 #define switch_screen(x) redraw_screen(x, 1) 52 53 struct tty_struct; 54 int tioclinux(struct tty_struct *tty, unsigned long arg); 55 56 /* consolemap.c */ 57 58 struct unimapinit; 59 struct unipair; 60 61 int con_set_trans_old(unsigned char __user * table); 62 int con_get_trans_old(unsigned char __user * table); 63 int con_set_trans_new(unsigned short __user * table); 64 int con_get_trans_new(unsigned short __user * table); 65 int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui); 66 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 67 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 68 int con_set_default_unimap(struct vc_data *vc); 69 void con_free_unimap(struct vc_data *vc); 70 void con_protect_unimap(struct vc_data *vc, int rdonly); 71 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); 72 73 /* vt.c */ 74 int vt_waitactive(int vt); 75 void change_console(struct vc_data *new_vc); 76 void reset_vc(struct vc_data *vc); 77 78 /* 79 * vc_screen.c shares this temporary buffer with the console write code so that 80 * we can easily avoid touching user space while holding the console spinlock. 81 */ 82 83 #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE) 84 extern char con_buf[CON_BUF_SIZE]; 85 extern struct semaphore con_buf_sem; 86 extern char vt_dont_switch; 87 88 struct vt_spawn_console { 89 spinlock_t lock; 90 struct pid *pid; 91 int sig; 92 }; 93 extern struct vt_spawn_console vt_spawn_con; 94 95 #endif /* _VT_KERN_H */ 96