| #ifndef _VT_KERN_H |
| #define _VT_KERN_H |
| |
| /* |
| * this really is an extension of the vc_cons structure in console.c, but |
| * with information needed by the vt package |
| */ |
| |
| #include <linux/vt.h> |
| #include <linux/kd.h> |
| #include <linux/tty.h> |
| #include <linux/mutex.h> |
| #include <linux/console_struct.h> |
| #include <linux/mm.h> |
| #include <linux/consolemap.h> |
| #include <linux/notifier.h> |
| |
| /* |
| * Presently, a lot of graphics programs do not restore the contents of |
| * the higher font pages. Defining this flag will avoid use of them, but |
| * will lose support for PIO_FONTRESET. Note that many font operations are |
| * not likely to work with these programs anyway; they need to be |
| * fixed. The linux/Documentation directory includes a code snippet |
| * to save and restore the text font. |
| */ |
| #ifdef CONFIG_VGA_CONSOLE |
| #define BROKEN_GRAPHICS_PROGRAMS 1 |
| #endif |
| |
| extern void kd_mksound(unsigned int hz, unsigned int ticks); |
| extern int kbd_rate(struct kbd_repeat *rep); |
| extern int fg_console, last_console, want_console; |
| |
| /* console.c */ |
| |
| int vc_allocate(unsigned int console); |
| int vc_cons_allocated(unsigned int console); |
| int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); |
| void vc_deallocate(unsigned int console); |
| void reset_palette(struct vc_data *vc); |
| void do_blank_screen(int entering_gfx); |
| void do_unblank_screen(int leaving_gfx); |
| void unblank_screen(void); |
| void poke_blanked_console(void); |
| int con_font_op(struct vc_data *vc, struct console_font_op *op); |
| int con_set_cmap(unsigned char __user *cmap); |
| int con_get_cmap(unsigned char __user *cmap); |
| void scrollback(struct vc_data *vc, int lines); |
| void scrollfront(struct vc_data *vc, int lines); |
| void update_region(struct vc_data *vc, unsigned long start, int count); |
| void redraw_screen(struct vc_data *vc, int is_switch); |
| #define update_screen(x) redraw_screen(x, 0) |
| #define switch_screen(x) redraw_screen(x, 1) |
| |
| struct tty_struct; |
| int tioclinux(struct tty_struct *tty, unsigned long arg); |
| |
| #ifdef CONFIG_CONSOLE_TRANSLATIONS |
| /* consolemap.c */ |
| |
| struct unimapinit; |
| struct unipair; |
| |
| int con_set_trans_old(unsigned char __user * table); |
| int con_get_trans_old(unsigned char __user * table); |
| int con_set_trans_new(unsigned short __user * table); |
| int con_get_trans_new(unsigned short __user * table); |
| int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui); |
| int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list); |
| int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list); |
| int con_set_default_unimap(struct vc_data *vc); |
| void con_free_unimap(struct vc_data *vc); |
| void con_protect_unimap(struct vc_data *vc, int rdonly); |
| int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); |
| |
| #define vc_translate(vc, c) ((vc)->vc_translate[(c) | \ |
| ((vc)->vc_toggle_meta ? 0x80 : 0)]) |
| #else |
| #define con_set_trans_old(arg) (0) |
| #define con_get_trans_old(arg) (-EINVAL) |
| #define con_set_trans_new(arg) (0) |
| #define con_get_trans_new(arg) (-EINVAL) |
| #define con_clear_unimap(vc, ui) (0) |
| #define con_set_unimap(vc, ct, list) (0) |
| #define con_set_default_unimap(vc) (0) |
| #define con_copy_unimap(d, s) (0) |
| #define con_get_unimap(vc, ct, uct, list) (-EINVAL) |
| #define con_free_unimap(vc) do { ; } while (0) |
| #define con_protect_unimap(vc, rdonly) do { ; } while (0) |
| |
| #define vc_translate(vc, c) (c) |
| #endif |
| |
| /* vt.c */ |
| void vt_event_post(unsigned int event, unsigned int old, unsigned int new); |
| int vt_waitactive(int n); |
| void change_console(struct vc_data *new_vc); |
| void reset_vc(struct vc_data *vc); |
| extern int unbind_con_driver(const struct consw *csw, int first, int last, |
| int deflt); |
| int vty_init(const struct file_operations *console_fops); |
| |
| static inline bool vt_force_oops_output(struct vc_data *vc) |
| { |
| if (oops_in_progress && vc->vc_panic_force_write) |
| return true; |
| return false; |
| } |
| |
| /* |
| * vc_screen.c shares this temporary buffer with the console write code so that |
| * we can easily avoid touching user space while holding the console spinlock. |
| */ |
| |
| #define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE) |
| extern char con_buf[CON_BUF_SIZE]; |
| extern struct mutex con_buf_mtx; |
| extern char vt_dont_switch; |
| extern int default_utf8; |
| extern int global_cursor_default; |
| |
| struct vt_spawn_console { |
| spinlock_t lock; |
| struct pid *pid; |
| int sig; |
| }; |
| extern struct vt_spawn_console vt_spawn_con; |
| |
| extern int vt_move_to_console(unsigned int vt, int alloc); |
| |
| /* Interfaces for VC notification of character events (for accessibility etc) */ |
| |
| struct vt_notifier_param { |
| struct vc_data *vc; /* VC on which the update happened */ |
| unsigned int c; /* Printed char */ |
| }; |
| |
| extern int register_vt_notifier(struct notifier_block *nb); |
| extern int unregister_vt_notifier(struct notifier_block *nb); |
| |
| extern void hide_boot_cursor(bool hide); |
| |
| #endif /* _VT_KERN_H */ |