1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _VT_KERN_H 3#define _VT_KERN_H 4 5/* 6 * this really is an extension of the vc_cons structure in console.c, but 7 * with information needed by the vt package 8 */ 9 10#include <linux/vt.h> 11#include <linux/kd.h> 12#include <linux/tty.h> 13#include <linux/mutex.h> 14#include <linux/console_struct.h> 15#include <linux/mm.h> 16#include <linux/consolemap.h> 17#include <linux/notifier.h> 18 19void kd_mksound(unsigned int hz, unsigned int ticks); 20int kbd_rate(struct kbd_repeat *rep); 21 22extern int fg_console, last_console, want_console; 23 24/* console.c */ 25 26int vc_allocate(unsigned int console); 27int vc_cons_allocated(unsigned int console); 28int __vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines, 29 bool from_user); 30struct vc_data *vc_deallocate(unsigned int console); 31void reset_palette(struct vc_data *vc); 32void do_blank_screen(int entering_gfx); 33void do_unblank_screen(int leaving_gfx); 34void poke_blanked_console(void); 35int con_font_op(struct vc_data *vc, struct console_font_op *op); 36int con_set_cmap(unsigned char __user *cmap); 37int con_get_cmap(unsigned char __user *cmap); 38void scrollback(struct vc_data *vc); 39void scrollfront(struct vc_data *vc, int lines); 40void clear_buffer_attributes(struct vc_data *vc); 41void update_region(struct vc_data *vc, unsigned long start, int count); 42void redraw_screen(struct vc_data *vc, int is_switch); 43#define update_screen(x) redraw_screen(x, 0) 44#define switch_screen(x) redraw_screen(x, 1) 45 46static inline int vc_resize(struct vc_data *vc, unsigned int cols, 47 unsigned int lines) 48{ 49 return __vc_resize(vc, cols, lines, false); 50} 51 52struct tty_struct; 53int tioclinux(struct tty_struct *tty, unsigned long arg); 54 55#ifdef CONFIG_CONSOLE_TRANSLATIONS 56/* consolemap.c */ 57 58struct unipair; 59 60int con_set_trans_old(unsigned char __user * table); 61int con_get_trans_old(unsigned char __user * table); 62int con_set_trans_new(unsigned short __user * table); 63int con_get_trans_new(unsigned short __user * table); 64int con_clear_unimap(struct vc_data *vc); 65int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 66int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 67int con_set_default_unimap(struct vc_data *vc); 68void con_free_unimap(struct vc_data *vc); 69int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); 70 71#else 72static inline int con_set_trans_old(unsigned char __user *table) 73{ 74 return 0; 75} 76static inline int con_get_trans_old(unsigned char __user *table) 77{ 78 return -EINVAL; 79} 80static inline int con_set_trans_new(unsigned short __user *table) 81{ 82 return 0; 83} 84static inline int con_get_trans_new(unsigned short __user *table) 85{ 86 return -EINVAL; 87} 88static inline int con_clear_unimap(struct vc_data *vc) 89{ 90 return 0; 91} 92static inline 93int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) 94{ 95 return 0; 96} 97static inline 98int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, 99 struct unipair __user *list) 100{ 101 return -EINVAL; 102} 103static inline int con_set_default_unimap(struct vc_data *vc) 104{ 105 return 0; 106} 107static inline void con_free_unimap(struct vc_data *vc) 108{ 109} 110static inline void con_protect_unimap(struct vc_data *vc, int rdonly) 111{ 112} 113static inline 114int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc) 115{ 116 return 0; 117} 118 119#endif 120 121/* vt.c */ 122void vt_event_post(unsigned int event, unsigned int old, unsigned int new); 123int vt_waitactive(int n); 124void change_console(struct vc_data *new_vc); 125void reset_vc(struct vc_data *vc); 126int do_unbind_con_driver(const struct consw *csw, int first, int last, 127 int deflt); 128int vty_init(const struct file_operations *console_fops); 129 130extern bool vt_dont_switch; 131extern int default_utf8; 132extern int global_cursor_default; 133 134struct vt_spawn_console { 135 spinlock_t lock; 136 struct pid *pid; 137 int sig; 138}; 139extern struct vt_spawn_console vt_spawn_con; 140 141int vt_move_to_console(unsigned int vt, int alloc); 142 143/* Interfaces for VC notification of character events (for accessibility etc) */ 144 145struct vt_notifier_param { 146 struct vc_data *vc; /* VC on which the update happened */ 147 unsigned int c; /* Printed char */ 148}; 149 150int register_vt_notifier(struct notifier_block *nb); 151int unregister_vt_notifier(struct notifier_block *nb); 152 153void hide_boot_cursor(bool hide); 154 155/* keyboard provided interfaces */ 156int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm); 157int vt_do_kdskbmode(unsigned int console, unsigned int arg); 158int vt_do_kdskbmeta(unsigned int console, unsigned int arg); 159int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, 160 int perm); 161int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, 162 unsigned int console); 163int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm); 164int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm); 165int vt_do_kdgkbmode(unsigned int console); 166int vt_do_kdgkbmeta(unsigned int console); 167void vt_reset_unicode(unsigned int console); 168int vt_get_shift_state(void); 169void vt_reset_keyboard(unsigned int console); 170int vt_get_leds(unsigned int console, int flag); 171int vt_get_kbd_mode_bit(unsigned int console, int bit); 172void vt_set_kbd_mode_bit(unsigned int console, int bit); 173void vt_clr_kbd_mode_bit(unsigned int console, int bit); 174void vt_set_led_state(unsigned int console, int leds); 175void vt_kbd_con_start(unsigned int console); 176void vt_kbd_con_stop(unsigned int console); 177 178#endif /* _VT_KERN_H */ 179