| 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 */ |