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 30extern void kd_mksound(unsigned int hz, unsigned int ticks); 31extern int kbd_rate(struct kbd_repeat *rep); 32extern int fg_console, last_console, want_console; 33 34/* console.c */ 35 36int vc_allocate(unsigned int console); 37int vc_cons_allocated(unsigned int console); 38int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); 39void vc_deallocate(unsigned int console); 40void reset_palette(struct vc_data *vc); 41void do_blank_screen(int entering_gfx); 42void do_unblank_screen(int leaving_gfx); 43void unblank_screen(void); 44void poke_blanked_console(void); 45int con_font_op(struct vc_data *vc, struct console_font_op *op); 46int con_set_cmap(unsigned char __user *cmap); 47int con_get_cmap(unsigned char __user *cmap); 48void scrollback(struct vc_data *vc, int lines); 49void scrollfront(struct vc_data *vc, int lines); 50void update_region(struct vc_data *vc, unsigned long start, int count); 51void 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 55struct tty_struct; 56int tioclinux(struct tty_struct *tty, unsigned long arg); 57 58#ifdef CONFIG_CONSOLE_TRANSLATIONS 59/* consolemap.c */ 60 61struct unimapinit; 62struct unipair; 63 64int con_set_trans_old(unsigned char __user * table); 65int con_get_trans_old(unsigned char __user * table); 66int con_set_trans_new(unsigned short __user * table); 67int con_get_trans_new(unsigned short __user * table); 68int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui); 69int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 70int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 71int con_set_default_unimap(struct vc_data *vc); 72void con_free_unimap(struct vc_data *vc); 73void con_protect_unimap(struct vc_data *vc, int rdonly); 74int 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 79static inline int con_set_trans_old(unsigned char __user *table) 80{ 81 return 0; 82} 83static inline int con_get_trans_old(unsigned char __user *table) 84{ 85 return -EINVAL; 86} 87static inline int con_set_trans_new(unsigned short __user *table) 88{ 89 return 0; 90} 91static inline int con_get_trans_new(unsigned short __user *table) 92{ 93 return -EINVAL; 94} 95static inline int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui) 96{ 97 return 0; 98} 99static inline 100int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) 101{ 102 return 0; 103} 104static inline 105int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, 106 struct unipair __user *list) 107{ 108 return -EINVAL; 109} 110static inline int con_set_default_unimap(struct vc_data *vc) 111{ 112 return 0; 113} 114static inline void con_free_unimap(struct vc_data *vc) 115{ 116} 117static inline void con_protect_unimap(struct vc_data *vc, int rdonly) 118{ 119} 120static inline 121int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc) 122{ 123 return 0; 124} 125 126#define vc_translate(vc, c) (c) 127#endif 128 129/* vt.c */ 130void vt_event_post(unsigned int event, unsigned int old, unsigned int new); 131int vt_waitactive(int n); 132void change_console(struct vc_data *new_vc); 133void reset_vc(struct vc_data *vc); 134extern int unbind_con_driver(const struct consw *csw, int first, int last, 135 int deflt); 136int vty_init(const struct file_operations *console_fops); 137 138static inline bool vt_force_oops_output(struct vc_data *vc) 139{ 140 if (oops_in_progress && vc->vc_panic_force_write) 141 return true; 142 return false; 143} 144 145/* 146 * vc_screen.c shares this temporary buffer with the console write code so that 147 * we can easily avoid touching user space while holding the console spinlock. 148 */ 149 150#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE) 151extern char con_buf[CON_BUF_SIZE]; 152extern struct mutex con_buf_mtx; 153extern char vt_dont_switch; 154extern int default_utf8; 155extern int global_cursor_default; 156 157struct vt_spawn_console { 158 spinlock_t lock; 159 struct pid *pid; 160 int sig; 161}; 162extern struct vt_spawn_console vt_spawn_con; 163 164extern int vt_move_to_console(unsigned int vt, int alloc); 165 166/* Interfaces for VC notification of character events (for accessibility etc) */ 167 168struct vt_notifier_param { 169 struct vc_data *vc; /* VC on which the update happened */ 170 unsigned int c; /* Printed char */ 171}; 172 173extern int register_vt_notifier(struct notifier_block *nb); 174extern int unregister_vt_notifier(struct notifier_block *nb); 175 176extern void hide_boot_cursor(bool hide); 177 178#endif /* _VT_KERN_H */ 179