| 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 | |
| 30 | extern void kd_mksound(unsigned int hz, unsigned int ticks); |
| 31 | extern int kbd_rate(struct kbd_repeat *rep); |
| 32 | extern int fg_console, last_console, want_console; |
| 33 | |
| 34 | /* console.c */ |
| 35 | |
| 36 | int vc_allocate(unsigned int console); |
| 37 | int vc_cons_allocated(unsigned int console); |
| 38 | int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); |
| 39 | void vc_deallocate(unsigned int console); |
| 40 | void reset_palette(struct vc_data *vc); |
| 41 | void do_blank_screen(int entering_gfx); |
| 42 | void do_unblank_screen(int leaving_gfx); |
| 43 | void unblank_screen(void); |
| 44 | void poke_blanked_console(void); |
| 45 | int con_font_op(struct vc_data *vc, struct console_font_op *op); |
| 46 | int con_set_cmap(unsigned char __user *cmap); |
| 47 | int con_get_cmap(unsigned char __user *cmap); |
| 48 | void scrollback(struct vc_data *vc, int lines); |
| 49 | void scrollfront(struct vc_data *vc, int lines); |
| 50 | void update_region(struct vc_data *vc, unsigned long start, int count); |
| 51 | void 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 | |
| 55 | struct tty_struct; |
| 56 | int tioclinux(struct tty_struct *tty, unsigned long arg); |
| 57 | |
| 58 | #ifdef CONFIG_CONSOLE_TRANSLATIONS |
| 59 | /* consolemap.c */ |
| 60 | |
| 61 | struct unimapinit; |
| 62 | struct unipair; |
| 63 | |
| 64 | int con_set_trans_old(unsigned char __user * table); |
| 65 | int con_get_trans_old(unsigned char __user * table); |
| 66 | int con_set_trans_new(unsigned short __user * table); |
| 67 | int con_get_trans_new(unsigned short __user * table); |
| 68 | int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui); |
| 69 | int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); |
| 70 | int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); |
| 71 | int con_set_default_unimap(struct vc_data *vc); |
| 72 | void con_free_unimap(struct vc_data *vc); |
| 73 | void con_protect_unimap(struct vc_data *vc, int rdonly); |
| 74 | int 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 |
| 79 | #define con_set_trans_old(arg) (0) |
| 80 | #define con_get_trans_old(arg) (-EINVAL) |
| 81 | #define con_set_trans_new(arg) (0) |
| 82 | #define con_get_trans_new(arg) (-EINVAL) |
| 83 | #define con_clear_unimap(vc, ui) (0) |
| 84 | #define con_set_unimap(vc, ct, list) (0) |
| 85 | #define con_set_default_unimap(vc) (0) |
| 86 | #define con_copy_unimap(d, s) (0) |
| 87 | #define con_get_unimap(vc, ct, uct, list) (-EINVAL) |
| 88 | #define con_free_unimap(vc) do { ; } while (0) |
| 89 | #define con_protect_unimap(vc, rdonly) do { ; } while (0) |
| 90 | |
| 91 | #define vc_translate(vc, c) (c) |
| 92 | #endif |
| 93 | |
| 94 | /* vt.c */ |
| 95 | void vt_event_post(unsigned int event, unsigned int old, unsigned int new); |
| 96 | int vt_waitactive(int n); |
| 97 | void change_console(struct vc_data *new_vc); |
| 98 | void reset_vc(struct vc_data *vc); |
| 99 | extern int unbind_con_driver(const struct consw *csw, int first, int last, |
| 100 | int deflt); |
| 101 | int vty_init(const struct file_operations *console_fops); |
| 102 | |
| 103 | /* |
| 104 | * vc_screen.c shares this temporary buffer with the console write code so that |
| 105 | * we can easily avoid touching user space while holding the console spinlock. |
| 106 | */ |
| 107 | |
| 108 | #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE) |
| 109 | extern char con_buf[CON_BUF_SIZE]; |
| 110 | extern struct mutex con_buf_mtx; |
| 111 | extern char vt_dont_switch; |
| 112 | extern int default_utf8; |
| 113 | extern int global_cursor_default; |
| 114 | |
| 115 | struct vt_spawn_console { |
| 116 | spinlock_t lock; |
| 117 | struct pid *pid; |
| 118 | int sig; |
| 119 | }; |
| 120 | extern struct vt_spawn_console vt_spawn_con; |
| 121 | |
| 122 | extern int vt_move_to_console(unsigned int vt, int alloc); |
| 123 | |
| 124 | /* Interfaces for VC notification of character events (for accessibility etc) */ |
| 125 | |
| 126 | struct vt_notifier_param { |
| 127 | struct vc_data *vc; /* VC on which the update happened */ |
| 128 | unsigned int c; /* Printed char */ |
| 129 | }; |
| 130 | |
| 131 | extern int register_vt_notifier(struct notifier_block *nb); |
| 132 | extern int unregister_vt_notifier(struct notifier_block *nb); |
| 133 | |
| 134 | extern void hide_boot_cursor(bool hide); |
| 135 | |
| 136 | #endif /* _VT_KERN_H */ |