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 poke_blanked_console(void); 34 int con_font_op(struct vc_data *vc, struct console_font_op *op); 35 int con_set_cmap(unsigned char __user *cmap); 36 int con_get_cmap(unsigned char __user *cmap); 37 void scrollback(struct vc_data *vc); 38 void scrollfront(struct vc_data *vc, int lines); 39 void clear_buffer_attributes(struct vc_data *vc); 40 void update_region(struct vc_data *vc, unsigned long start, int count); 41 void redraw_screen(struct vc_data *vc, int is_switch); 42 #define update_screen(x) redraw_screen(x, 0) 43 #define switch_screen(x) redraw_screen(x, 1) 44 45 struct tty_struct; 46 int tioclinux(struct tty_struct *tty, unsigned long arg); 47 48 #ifdef CONFIG_CONSOLE_TRANSLATIONS 49 /* consolemap.c */ 50 51 struct unipair; 52 53 int con_set_trans_old(unsigned char __user * table); 54 int con_get_trans_old(unsigned char __user * table); 55 int con_set_trans_new(unsigned short __user * table); 56 int con_get_trans_new(unsigned short __user * table); 57 int con_clear_unimap(struct vc_data *vc); 58 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 59 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 60 int con_set_default_unimap(struct vc_data *vc); 61 void con_free_unimap(struct vc_data *vc); 62 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); 63 64 #else 65 static inline int con_set_trans_old(unsigned char __user *table) 66 { 67 return 0; 68 } 69 static inline int con_get_trans_old(unsigned char __user *table) 70 { 71 return -EINVAL; 72 } 73 static inline int con_set_trans_new(unsigned short __user *table) 74 { 75 return 0; 76 } 77 static inline int con_get_trans_new(unsigned short __user *table) 78 { 79 return -EINVAL; 80 } 81 static inline int con_clear_unimap(struct vc_data *vc) 82 { 83 return 0; 84 } 85 static inline 86 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) 87 { 88 return 0; 89 } 90 static inline 91 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, 92 struct unipair __user *list) 93 { 94 return -EINVAL; 95 } 96 static inline int con_set_default_unimap(struct vc_data *vc) 97 { 98 return 0; 99 } 100 static inline void con_free_unimap(struct vc_data *vc) 101 { 102 } 103 static inline void con_protect_unimap(struct vc_data *vc, int rdonly) 104 { 105 } 106 static inline 107 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc) 108 { 109 return 0; 110 } 111 112 #endif 113 114 /* vt.c */ 115 void vt_event_post(unsigned int event, unsigned int old, unsigned int new); 116 int vt_waitactive(int n); 117 void change_console(struct vc_data *new_vc); 118 void reset_vc(struct vc_data *vc); 119 int do_unbind_con_driver(const struct consw *csw, int first, int last, 120 int deflt); 121 int vty_init(const struct file_operations *console_fops); 122 123 extern bool vt_dont_switch; 124 extern int default_utf8; 125 extern int global_cursor_default; 126 127 struct vt_spawn_console { 128 spinlock_t lock; 129 struct pid *pid; 130 int sig; 131 }; 132 extern struct vt_spawn_console vt_spawn_con; 133 134 int vt_move_to_console(unsigned int vt, int alloc); 135 136 /* Interfaces for VC notification of character events (for accessibility etc) */ 137 138 struct vt_notifier_param { 139 struct vc_data *vc; /* VC on which the update happened */ 140 unsigned int c; /* Printed char */ 141 }; 142 143 int register_vt_notifier(struct notifier_block *nb); 144 int unregister_vt_notifier(struct notifier_block *nb); 145 146 void hide_boot_cursor(bool hide); 147 148 /* keyboard provided interfaces */ 149 int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm); 150 int vt_do_kdskbmode(unsigned int console, unsigned int arg); 151 int vt_do_kdskbmeta(unsigned int console, unsigned int arg); 152 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, 153 int perm); 154 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, 155 unsigned int console); 156 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm); 157 int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm); 158 int vt_do_kdgkbmode(unsigned int console); 159 int vt_do_kdgkbmeta(unsigned int console); 160 void vt_reset_unicode(unsigned int console); 161 int vt_get_shift_state(void); 162 void vt_reset_keyboard(unsigned int console); 163 int vt_get_leds(unsigned int console, int flag); 164 int vt_get_kbd_mode_bit(unsigned int console, int bit); 165 void vt_set_kbd_mode_bit(unsigned int console, int bit); 166 void vt_clr_kbd_mode_bit(unsigned int console, int bit); 167 void vt_set_led_state(unsigned int console, int leds); 168 void vt_kbd_con_start(unsigned int console); 169 void vt_kbd_con_stop(unsigned int console); 170 171 void vc_scrolldelta_helper(struct vc_data *c, int lines, 172 unsigned int rolled_over, void *_base, unsigned int size); 173 174 #endif /* _VT_KERN_H */ 175