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 /* 20 * Presently, a lot of graphics programs do not restore the contents of 21 * the higher font pages. Defining this flag will avoid use of them, but 22 * will lose support for PIO_FONTRESET. Note that many font operations are 23 * not likely to work with these programs anyway; they need to be 24 * fixed. The linux/Documentation directory includes a code snippet 25 * to save and restore the text font. 26 */ 27 #ifdef CONFIG_VGA_CONSOLE 28 #define BROKEN_GRAPHICS_PROGRAMS 1 29 #endif 30 31 void kd_mksound(unsigned int hz, unsigned int ticks); 32 int kbd_rate(struct kbd_repeat *rep); 33 34 extern int fg_console, last_console, want_console; 35 36 /* console.c */ 37 38 int vc_allocate(unsigned int console); 39 int vc_cons_allocated(unsigned int console); 40 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); 41 struct vc_data *vc_deallocate(unsigned int console); 42 void reset_palette(struct vc_data *vc); 43 void do_blank_screen(int entering_gfx); 44 void do_unblank_screen(int leaving_gfx); 45 void unblank_screen(void); 46 void poke_blanked_console(void); 47 int con_font_op(struct vc_data *vc, struct console_font_op *op); 48 int con_set_cmap(unsigned char __user *cmap); 49 int con_get_cmap(unsigned char __user *cmap); 50 void scrollback(struct vc_data *vc); 51 void scrollfront(struct vc_data *vc, int lines); 52 void clear_buffer_attributes(struct vc_data *vc); 53 void update_region(struct vc_data *vc, unsigned long start, int count); 54 void redraw_screen(struct vc_data *vc, int is_switch); 55 #define update_screen(x) redraw_screen(x, 0) 56 #define switch_screen(x) redraw_screen(x, 1) 57 58 struct tty_struct; 59 int tioclinux(struct tty_struct *tty, unsigned long arg); 60 61 #ifdef CONFIG_CONSOLE_TRANSLATIONS 62 /* consolemap.c */ 63 64 struct unipair; 65 66 int con_set_trans_old(unsigned char __user * table); 67 int con_get_trans_old(unsigned char __user * table); 68 int con_set_trans_new(unsigned short __user * table); 69 int con_get_trans_new(unsigned short __user * table); 70 int con_clear_unimap(struct vc_data *vc); 71 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); 72 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); 73 int con_set_default_unimap(struct vc_data *vc); 74 void con_free_unimap(struct vc_data *vc); 75 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); 76 77 #else 78 static inline int con_set_trans_old(unsigned char __user *table) 79 { 80 return 0; 81 } 82 static inline int con_get_trans_old(unsigned char __user *table) 83 { 84 return -EINVAL; 85 } 86 static inline int con_set_trans_new(unsigned short __user *table) 87 { 88 return 0; 89 } 90 static inline int con_get_trans_new(unsigned short __user *table) 91 { 92 return -EINVAL; 93 } 94 static inline int con_clear_unimap(struct vc_data *vc) 95 { 96 return 0; 97 } 98 static inline 99 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) 100 { 101 return 0; 102 } 103 static inline 104 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, 105 struct unipair __user *list) 106 { 107 return -EINVAL; 108 } 109 static inline int con_set_default_unimap(struct vc_data *vc) 110 { 111 return 0; 112 } 113 static inline void con_free_unimap(struct vc_data *vc) 114 { 115 } 116 static inline void con_protect_unimap(struct vc_data *vc, int rdonly) 117 { 118 } 119 static inline 120 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc) 121 { 122 return 0; 123 } 124 125 #endif 126 127 /* vt.c */ 128 void vt_event_post(unsigned int event, unsigned int old, unsigned int new); 129 int vt_waitactive(int n); 130 void change_console(struct vc_data *new_vc); 131 void reset_vc(struct vc_data *vc); 132 int do_unbind_con_driver(const struct consw *csw, int first, int last, 133 int deflt); 134 int vty_init(const struct file_operations *console_fops); 135 136 extern bool vt_dont_switch; 137 extern int default_utf8; 138 extern int global_cursor_default; 139 140 struct vt_spawn_console { 141 spinlock_t lock; 142 struct pid *pid; 143 int sig; 144 }; 145 extern struct vt_spawn_console vt_spawn_con; 146 147 int vt_move_to_console(unsigned int vt, int alloc); 148 149 /* Interfaces for VC notification of character events (for accessibility etc) */ 150 151 struct vt_notifier_param { 152 struct vc_data *vc; /* VC on which the update happened */ 153 unsigned int c; /* Printed char */ 154 }; 155 156 int register_vt_notifier(struct notifier_block *nb); 157 int unregister_vt_notifier(struct notifier_block *nb); 158 159 void hide_boot_cursor(bool hide); 160 161 /* keyboard provided interfaces */ 162 int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm); 163 int vt_do_kdskbmode(int console, unsigned int arg); 164 int vt_do_kdskbmeta(int console, unsigned int arg); 165 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, 166 int perm); 167 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, 168 int console); 169 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm); 170 int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm); 171 int vt_do_kdgkbmode(int console); 172 int vt_do_kdgkbmeta(int console); 173 void vt_reset_unicode(int console); 174 int vt_get_shift_state(void); 175 void vt_reset_keyboard(int console); 176 int vt_get_leds(int console, int flag); 177 int vt_get_kbd_mode_bit(int console, int bit); 178 void vt_set_kbd_mode_bit(int console, int bit); 179 void vt_clr_kbd_mode_bit(int console, int bit); 180 void vt_set_led_state(int console, int leds); 181 void vt_set_led_state(int console, int leds); 182 void vt_kbd_con_start(int console); 183 void vt_kbd_con_stop(int console); 184 185 void vc_scrolldelta_helper(struct vc_data *c, int lines, 186 unsigned int rolled_over, void *_base, unsigned int size); 187 188 #endif /* _VT_KERN_H */ 189