vt_kern.h 5.7 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _VT_KERN_H
  3. #define _VT_KERN_H
  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. #include <linux/vt.h>
  9. #include <linux/kd.h>
  10. #include <linux/tty.h>
  11. #include <linux/mutex.h>
  12. #include <linux/console_struct.h>
  13. #include <linux/mm.h>
  14. #include <linux/consolemap.h>
  15. #include <linux/notifier.h>
  16. /*
  17. * Presently, a lot of graphics programs do not restore the contents of
  18. * the higher font pages. Defining this flag will avoid use of them, but
  19. * will lose support for PIO_FONTRESET. Note that many font operations are
  20. * not likely to work with these programs anyway; they need to be
  21. * fixed. The linux/Documentation directory includes a code snippet
  22. * to save and restore the text font.
  23. */
  24. #ifdef CONFIG_VGA_CONSOLE
  25. #define BROKEN_GRAPHICS_PROGRAMS 1
  26. #endif
  27. void kd_mksound(unsigned int hz, unsigned int ticks);
  28. int kbd_rate(struct kbd_repeat *rep);
  29. extern int fg_console, last_console, want_console;
  30. /* console.c */
  31. int vc_allocate(unsigned int console);
  32. int vc_cons_allocated(unsigned int console);
  33. int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
  34. struct vc_data *vc_deallocate(unsigned int console);
  35. void reset_palette(struct vc_data *vc);
  36. void do_blank_screen(int entering_gfx);
  37. void do_unblank_screen(int leaving_gfx);
  38. void unblank_screen(void);
  39. void poke_blanked_console(void);
  40. int con_font_op(struct vc_data *vc, struct console_font_op *op);
  41. int con_set_cmap(unsigned char __user *cmap);
  42. int con_get_cmap(unsigned char __user *cmap);
  43. void scrollback(struct vc_data *vc);
  44. void scrollfront(struct vc_data *vc, int lines);
  45. void clear_buffer_attributes(struct vc_data *vc);
  46. void update_region(struct vc_data *vc, unsigned long start, int count);
  47. void redraw_screen(struct vc_data *vc, int is_switch);
  48. #define update_screen(x) redraw_screen(x, 0)
  49. #define switch_screen(x) redraw_screen(x, 1)
  50. struct tty_struct;
  51. int tioclinux(struct tty_struct *tty, unsigned long arg);
  52. #ifdef CONFIG_CONSOLE_TRANSLATIONS
  53. /* consolemap.c */
  54. struct unipair;
  55. int con_set_trans_old(unsigned char __user * table);
  56. int con_get_trans_old(unsigned char __user * table);
  57. int con_set_trans_new(unsigned short __user * table);
  58. int con_get_trans_new(unsigned short __user * table);
  59. int con_clear_unimap(struct vc_data *vc);
  60. int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
  61. int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
  62. int con_set_default_unimap(struct vc_data *vc);
  63. void con_free_unimap(struct vc_data *vc);
  64. int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
  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. #endif
  113. /* vt.c */
  114. void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
  115. int vt_waitactive(int n);
  116. void change_console(struct vc_data *new_vc);
  117. void reset_vc(struct vc_data *vc);
  118. int do_unbind_con_driver(const struct consw *csw, int first, int last,
  119. int deflt);
  120. int vty_init(const struct file_operations *console_fops);
  121. extern bool vt_dont_switch;
  122. extern int default_utf8;
  123. extern int global_cursor_default;
  124. struct vt_spawn_console {
  125. spinlock_t lock;
  126. struct pid *pid;
  127. int sig;
  128. };
  129. extern struct vt_spawn_console vt_spawn_con;
  130. int vt_move_to_console(unsigned int vt, int alloc);
  131. /* Interfaces for VC notification of character events (for accessibility etc) */
  132. struct vt_notifier_param {
  133. struct vc_data *vc; /* VC on which the update happened */
  134. unsigned int c; /* Printed char */
  135. };
  136. int register_vt_notifier(struct notifier_block *nb);
  137. int unregister_vt_notifier(struct notifier_block *nb);
  138. void hide_boot_cursor(bool hide);
  139. /* keyboard provided interfaces */
  140. int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
  141. int vt_do_kdskbmode(int console, unsigned int arg);
  142. int vt_do_kdskbmeta(int console, unsigned int arg);
  143. int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
  144. int perm);
  145. int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
  146. int console);
  147. int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
  148. int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm);
  149. int vt_do_kdgkbmode(int console);
  150. int vt_do_kdgkbmeta(int console);
  151. void vt_reset_unicode(int console);
  152. int vt_get_shift_state(void);
  153. void vt_reset_keyboard(int console);
  154. int vt_get_leds(int console, int flag);
  155. int vt_get_kbd_mode_bit(int console, int bit);
  156. void vt_set_kbd_mode_bit(int console, int bit);
  157. void vt_clr_kbd_mode_bit(int console, int bit);
  158. void vt_set_led_state(int console, int leds);
  159. void vt_set_led_state(int console, int leds);
  160. void vt_kbd_con_start(int console);
  161. void vt_kbd_con_stop(int console);
  162. void vc_scrolldelta_helper(struct vc_data *c, int lines,
  163. unsigned int rolled_over, void *_base, unsigned int size);
  164. #endif /* _VT_KERN_H */