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 #include <linux/consolemap.h> 16 #include <linux/notifier.h> 17 18 /* 19 * Presently, a lot of graphics programs do not restore the contents of 20 * the higher font pages. Defining this flag will avoid use of them, but 21 * will lose support for PIO_FONTRESET. Note that many font operations are 22 * not likely to work with these programs anyway; they need to be 23 * fixed. The linux/Documentation directory includes a code snippet 24 * to save and restore the text font. 25 */ 26 #ifdef CONFIG_VGA_CONSOLE 27 #define BROKEN_GRAPHICS_PROGRAMS 1 28 #endif 29 30 extern void kd_mksound(unsigned int hz, unsigned int ticks); 31 extern int kbd_rate(struct kbd_repeat *rep); 32 extern int fg_console, last_console, want_console; 33 34 /* console.c */ 35 36 int vc_allocate(unsigned int console); 37 int vc_cons_allocated(unsigned int console); 38 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); 39 void vc_deallocate(unsigned int console); 40 void reset_palette(struct vc_data *vc); 41 void do_blank_screen(int entering_gfx); 42 void do_unblank_screen(int leaving_gfx); 43 void unblank_screen(void); 44 void poke_blanked_console(void); 45 int con_font_op(struct vc_data *vc, struct console_font_op *op); 46 int con_set_cmap(unsigned char __user *cmap); 47 int con_get_cmap(unsigned char __user *cmap); 48 void scrollback(struct vc_data *vc, int lines); 49 void scrollfront(struct vc_data *vc, int lines); 50 void update_region(struct vc_data *vc, unsigned long start, int count); 51 void redraw_screen(struct vc_data *vc, int is_switch); 52 #define update_screen(x) redraw_screen(x, 0) 53 #define switch_screen(x) redraw_screen(x, 1) 54 55 struct tty_struct; 56 int tioclinux(struct tty_struct *tty, unsigned long arg); 57 58 #ifdef CONFIG_CONSOLE_TRANSLATIONS 59 /* consolemap.c */ 60 61 struct unimapinit; 62 struct unipair; 63 64 int con_set_trans_old(unsigned char __user * table); 65 int con_get_trans_old(unsigned char __user * table); 66 int con_set_trans_new(unsigned short __user * table); 67 int con_get_trans_new(unsigned short __user * table); 68 int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui); 69 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 70 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 71 int con_set_default_unimap(struct vc_data *vc); 72 void con_free_unimap(struct vc_data *vc); 73 void con_protect_unimap(struct vc_data *vc, int rdonly); 74 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); 75 76 #define vc_translate(vc, c) ((vc)->vc_translate[(c) | \ 77 ((vc)->vc_toggle_meta ? 0x80 : 0)]) 78 #else 79 #define con_set_trans_old(arg) (0) 80 #define con_get_trans_old(arg) (-EINVAL) 81 #define con_set_trans_new(arg) (0) 82 #define con_get_trans_new(arg) (-EINVAL) 83 #define con_clear_unimap(vc, ui) (0) 84 #define con_set_unimap(vc, ct, list) (0) 85 #define con_set_default_unimap(vc) (0) 86 #define con_copy_unimap(d, s) (0) 87 #define con_get_unimap(vc, ct, uct, list) (-EINVAL) 88 #define con_free_unimap(vc) do { ; } while (0) 89 #define con_protect_unimap(vc, rdonly) do { ; } while (0) 90 91 #define vc_translate(vc, c) (c) 92 #endif 93 94 /* vt.c */ 95 void vt_event_post(unsigned int event, unsigned int old, unsigned int new); 96 int vt_waitactive(int n); 97 void change_console(struct vc_data *new_vc); 98 void reset_vc(struct vc_data *vc); 99 extern int unbind_con_driver(const struct consw *csw, int first, int last, 100 int deflt); 101 int vty_init(const struct file_operations *console_fops); 102 103 /* 104 * vc_screen.c shares this temporary buffer with the console write code so that 105 * we can easily avoid touching user space while holding the console spinlock. 106 */ 107 108 #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE) 109 extern char con_buf[CON_BUF_SIZE]; 110 extern struct mutex con_buf_mtx; 111 extern char vt_dont_switch; 112 extern int default_utf8; 113 114 struct vt_spawn_console { 115 spinlock_t lock; 116 struct pid *pid; 117 int sig; 118 }; 119 extern struct vt_spawn_console vt_spawn_con; 120 121 extern int vt_move_to_console(unsigned int vt, int alloc); 122 123 /* Interfaces for VC notification of character events (for accessibility etc) */ 124 125 struct vt_notifier_param { 126 struct vc_data *vc; /* VC on which the update happened */ 127 unsigned int c; /* Printed char */ 128 }; 129 130 extern int register_vt_notifier(struct notifier_block *nb); 131 extern int unregister_vt_notifier(struct notifier_block *nb); 132 133 #endif /* _VT_KERN_H */ 134