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 struct vc_data *vc_deallocate(unsigned int console); 30 void reset_palette(struct vc_data *vc); 31 void do_blank_screen(int entering_gfx); 32 void do_unblank_screen(int leaving_gfx); 33 void unblank_screen(void); 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 struct tty_struct; 47 int tioclinux(struct tty_struct *tty, unsigned long arg); 48 49 #ifdef CONFIG_CONSOLE_TRANSLATIONS 50 /* consolemap.c */ 51 52 struct unipair; 53 54 int con_set_trans_old(unsigned char __user * table); 55 int con_get_trans_old(unsigned char __user * table); 56 int con_set_trans_new(unsigned short __user * table); 57 int con_get_trans_new(unsigned short __user * table); 58 int con_clear_unimap(struct vc_data *vc); 59 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 60 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 61 int con_set_default_unimap(struct vc_data *vc); 62 void con_free_unimap(struct vc_data *vc); 63 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); 64 65 #else 66 static inline int con_set_trans_old(unsigned char __user *table) 67 { 68 return 0; 69 } 70 static inline int con_get_trans_old(unsigned char __user *table) 71 { 72 return -EINVAL; 73 } 74 static inline int con_set_trans_new(unsigned short __user *table) 75 { 76 return 0; 77 } 78 static inline int con_get_trans_new(unsigned short __user *table) 79 { 80 return -EINVAL; 81 } 82 static inline int con_clear_unimap(struct vc_data *vc) 83 { 84 return 0; 85 } 86 static inline 87 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) 88 { 89 return 0; 90 } 91 static inline 92 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, 93 struct unipair __user *list) 94 { 95 return -EINVAL; 96 } 97 static inline int con_set_default_unimap(struct vc_data *vc) 98 { 99 return 0; 100 } 101 static inline void con_free_unimap(struct vc_data *vc) 102 { 103 } 104 static inline void con_protect_unimap(struct vc_data *vc, int rdonly) 105 { 106 } 107 static inline 108 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc) 109 { 110 return 0; 111 } 112 113 #endif 114 115 /* vt.c */ 116 void vt_event_post(unsigned int event, unsigned int old, unsigned int new); 117 int vt_waitactive(int n); 118 void change_console(struct vc_data *new_vc); 119 void reset_vc(struct vc_data *vc); 120 int do_unbind_con_driver(const struct consw *csw, int first, int last, 121 int deflt); 122 int vty_init(const struct file_operations *console_fops); 123 124 extern bool vt_dont_switch; 125 extern int default_utf8; 126 extern int global_cursor_default; 127 128 struct vt_spawn_console { 129 spinlock_t lock; 130 struct pid *pid; 131 int sig; 132 }; 133 extern struct vt_spawn_console vt_spawn_con; 134 135 int vt_move_to_console(unsigned int vt, int alloc); 136 137 /* Interfaces for VC notification of character events (for accessibility etc) */ 138 139 struct vt_notifier_param { 140 struct vc_data *vc; /* VC on which the update happened */ 141 unsigned int c; /* Printed char */ 142 }; 143 144 int register_vt_notifier(struct notifier_block *nb); 145 int unregister_vt_notifier(struct notifier_block *nb); 146 147 void hide_boot_cursor(bool hide); 148 149 /* keyboard provided interfaces */ 150 int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm); 151 int vt_do_kdskbmode(unsigned int console, unsigned int arg); 152 int vt_do_kdskbmeta(unsigned int console, unsigned int arg); 153 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, 154 int perm); 155 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, 156 unsigned int console); 157 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm); 158 int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm); 159 int vt_do_kdgkbmode(unsigned int console); 160 int vt_do_kdgkbmeta(unsigned int console); 161 void vt_reset_unicode(unsigned int console); 162 int vt_get_shift_state(void); 163 void vt_reset_keyboard(unsigned int console); 164 int vt_get_leds(unsigned int console, int flag); 165 int vt_get_kbd_mode_bit(unsigned int console, int bit); 166 void vt_set_kbd_mode_bit(unsigned int console, int bit); 167 void vt_clr_kbd_mode_bit(unsigned int console, int bit); 168 void vt_set_led_state(unsigned int console, int leds); 169 void vt_kbd_con_start(unsigned int console); 170 void vt_kbd_con_stop(unsigned int console); 171 172 void vc_scrolldelta_helper(struct vc_data *c, int lines, 173 unsigned int rolled_over, void *_base, unsigned int size); 174 175 #endif /* _VT_KERN_H */ 176