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