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
 31void kd_mksound(unsigned int hz, unsigned int ticks);
 32int kbd_rate(struct kbd_repeat *rep);
 33
 34extern int fg_console, last_console, want_console;
 35
 36/* console.c */
 37
 38int vc_allocate(unsigned int console);
 39int vc_cons_allocated(unsigned int console);
 40int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
 41struct vc_data *vc_deallocate(unsigned int console);
 42void reset_palette(struct vc_data *vc);
 43void do_blank_screen(int entering_gfx);
 44void do_unblank_screen(int leaving_gfx);
 45void unblank_screen(void);
 46void poke_blanked_console(void);
 47int con_font_op(struct vc_data *vc, struct console_font_op *op);
 48int con_set_cmap(unsigned char __user *cmap);
 49int con_get_cmap(unsigned char __user *cmap);
 50void scrollback(struct vc_data *vc);
 51void scrollfront(struct vc_data *vc, int lines);
 52void clear_buffer_attributes(struct vc_data *vc);
 53void update_region(struct vc_data *vc, unsigned long start, int count);
 54void 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
 58struct tty_struct;
 59int tioclinux(struct tty_struct *tty, unsigned long arg);
 60
 61#ifdef CONFIG_CONSOLE_TRANSLATIONS
 62/* consolemap.c */
 63
 
 64struct unipair;
 65
 66int con_set_trans_old(unsigned char __user * table);
 67int con_get_trans_old(unsigned char __user * table);
 68int con_set_trans_new(unsigned short __user * table);
 69int con_get_trans_new(unsigned short __user * table);
 70int con_clear_unimap(struct vc_data *vc);
 71int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
 72int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
 73int con_set_default_unimap(struct vc_data *vc);
 74void con_free_unimap(struct vc_data *vc);
 
 75int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
 76
 
 
 77#else
 78static inline int con_set_trans_old(unsigned char __user *table)
 79{
 80	return 0;
 81}
 82static inline int con_get_trans_old(unsigned char __user *table)
 83{
 84	return -EINVAL;
 85}
 86static inline int con_set_trans_new(unsigned short __user *table)
 87{
 88	return 0;
 89}
 90static inline int con_get_trans_new(unsigned short __user *table)
 91{
 92	return -EINVAL;
 93}
 94static inline int con_clear_unimap(struct vc_data *vc)
 95{
 96	return 0;
 97}
 98static inline
 99int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
100{
101	return 0;
102}
103static inline
104int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
105		   struct unipair __user *list)
106{
107	return -EINVAL;
108}
109static inline int con_set_default_unimap(struct vc_data *vc)
110{
111	return 0;
112}
113static inline void con_free_unimap(struct vc_data *vc)
114{
115}
116static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
117{
118}
119static inline
120int 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 */
128void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
129int vt_waitactive(int n);
130void change_console(struct vc_data *new_vc);
131void reset_vc(struct vc_data *vc);
132int do_unbind_con_driver(const struct consw *csw, int first, int last,
133			 int deflt);
134int vty_init(const struct file_operations *console_fops);
135
136extern bool vt_dont_switch;
 
 
 
 
 
 
 
137extern int default_utf8;
138extern int global_cursor_default;
139
140struct vt_spawn_console {
141	spinlock_t lock;
142	struct pid *pid;
143	int sig;
144};
145extern struct vt_spawn_console vt_spawn_con;
146
147int vt_move_to_console(unsigned int vt, int alloc);
148
149/* Interfaces for VC notification of character events (for accessibility etc) */
150
151struct vt_notifier_param {
152	struct vc_data *vc;	/* VC on which the update happened */
153	unsigned int c;		/* Printed char */
154};
155
156int register_vt_notifier(struct notifier_block *nb);
157int unregister_vt_notifier(struct notifier_block *nb);
158
159void hide_boot_cursor(bool hide);
160
161/* keyboard  provided interfaces */
162int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
163int vt_do_kdskbmode(int console, unsigned int arg);
164int vt_do_kdskbmeta(int console, unsigned int arg);
165int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
166			  int perm);
167int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
168		     int console);
169int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
170int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
171int vt_do_kdgkbmode(int console);
172int vt_do_kdgkbmeta(int console);
173void vt_reset_unicode(int console);
174int vt_get_shift_state(void);
175void vt_reset_keyboard(int console);
176int vt_get_leds(int console, int flag);
177int vt_get_kbd_mode_bit(int console, int bit);
178void vt_set_kbd_mode_bit(int console, int bit);
179void vt_clr_kbd_mode_bit(int console, int bit);
180void vt_set_led_state(int console, int leds);
181void vt_set_led_state(int console, int leds);
182void vt_kbd_con_start(int console);
183void vt_kbd_con_stop(int console);
184
185void 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 */

 
  1#ifndef _VT_KERN_H
  2#define _VT_KERN_H
  3
  4/*
  5 * this really is an extension of the vc_cons structure in console.c, but
  6 * with information needed by the vt package
  7 */
  8
  9#include <linux/vt.h>
 10#include <linux/kd.h>
 11#include <linux/tty.h>
 12#include <linux/mutex.h>
 13#include <linux/console_struct.h>
 14#include <linux/mm.h>
 15#include <linux/consolemap.h>
 16#include <linux/notifier.h>
 17
 18/*
 19 * Presently, a lot of graphics programs do not restore the contents of
 20 * the higher font pages.  Defining this flag will avoid use of them, but
 21 * will lose support for PIO_FONTRESET.  Note that many font operations are
 22 * not likely to work with these programs anyway; they need to be
 23 * fixed.  The linux/Documentation directory includes a code snippet
 24 * to save and restore the text font.
 25 */
 26#ifdef CONFIG_VGA_CONSOLE
 27#define BROKEN_GRAPHICS_PROGRAMS 1
 28#endif
 29
 30extern void kd_mksound(unsigned int hz, unsigned int ticks);
 31extern int kbd_rate(struct kbd_repeat *rep);
 
 32extern int fg_console, last_console, want_console;
 33
 34/* console.c */
 35
 36int vc_allocate(unsigned int console);
 37int vc_cons_allocated(unsigned int console);
 38int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
 39void vc_deallocate(unsigned int console);
 40void reset_palette(struct vc_data *vc);
 41void do_blank_screen(int entering_gfx);
 42void do_unblank_screen(int leaving_gfx);
 43void unblank_screen(void);
 44void poke_blanked_console(void);
 45int con_font_op(struct vc_data *vc, struct console_font_op *op);
 46int con_set_cmap(unsigned char __user *cmap);
 47int con_get_cmap(unsigned char __user *cmap);
 48void scrollback(struct vc_data *vc, int lines);
 49void scrollfront(struct vc_data *vc, int lines);
 
 50void update_region(struct vc_data *vc, unsigned long start, int count);
 51void redraw_screen(struct vc_data *vc, int is_switch);
 52#define update_screen(x) redraw_screen(x, 0)
 53#define switch_screen(x) redraw_screen(x, 1)
 54
 55struct tty_struct;
 56int tioclinux(struct tty_struct *tty, unsigned long arg);
 57
 58#ifdef CONFIG_CONSOLE_TRANSLATIONS
 59/* consolemap.c */
 60
 61struct unimapinit;
 62struct unipair;
 63
 64int con_set_trans_old(unsigned char __user * table);
 65int con_get_trans_old(unsigned char __user * table);
 66int con_set_trans_new(unsigned short __user * table);
 67int con_get_trans_new(unsigned short __user * table);
 68int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui);
 69int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
 70int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
 71int con_set_default_unimap(struct vc_data *vc);
 72void con_free_unimap(struct vc_data *vc);
 73void con_protect_unimap(struct vc_data *vc, int rdonly);
 74int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
 75
 76#define vc_translate(vc, c) ((vc)->vc_translate[(c) |			\
 77					((vc)->vc_toggle_meta ? 0x80 : 0)])
 78#else
 79static inline int con_set_trans_old(unsigned char __user *table)
 80{
 81	return 0;
 82}
 83static inline int con_get_trans_old(unsigned char __user *table)
 84{
 85	return -EINVAL;
 86}
 87static inline int con_set_trans_new(unsigned short __user *table)
 88{
 89	return 0;
 90}
 91static inline int con_get_trans_new(unsigned short __user *table)
 92{
 93	return -EINVAL;
 94}
 95static inline int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
 96{
 97	return 0;
 98}
 99static inline
100int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
101{
102	return 0;
103}
104static inline
105int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
106		   struct unipair __user *list)
107{
108	return -EINVAL;
109}
110static inline int con_set_default_unimap(struct vc_data *vc)
111{
112	return 0;
113}
114static inline void con_free_unimap(struct vc_data *vc)
115{
116}
117static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
118{
119}
120static inline
121int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
122{
123	return 0;
124}
125
126#define vc_translate(vc, c) (c)
127#endif
128
129/* vt.c */
130void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
131int vt_waitactive(int n);
132void change_console(struct vc_data *new_vc);
133void reset_vc(struct vc_data *vc);
134extern int unbind_con_driver(const struct consw *csw, int first, int last,
135			     int deflt);
136int vty_init(const struct file_operations *console_fops);
137
138static inline bool vt_force_oops_output(struct vc_data *vc)
139{
140	if (oops_in_progress && vc->vc_panic_force_write  && panic_timeout >= 0)
141		return true;
142	return false;
143}
144
145extern char vt_dont_switch;
146extern int default_utf8;
147extern int global_cursor_default;
148
149struct vt_spawn_console {
150	spinlock_t lock;
151	struct pid *pid;
152	int sig;
153};
154extern struct vt_spawn_console vt_spawn_con;
155
156extern int vt_move_to_console(unsigned int vt, int alloc);
157
158/* Interfaces for VC notification of character events (for accessibility etc) */
159
160struct vt_notifier_param {
161	struct vc_data *vc;	/* VC on which the update happened */
162	unsigned int c;		/* Printed char */
163};
164
165extern int register_vt_notifier(struct notifier_block *nb);
166extern int unregister_vt_notifier(struct notifier_block *nb);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
167
168extern void hide_boot_cursor(bool hide);
 
169
170#endif /* _VT_KERN_H */