xref: /freebsd/sys/dev/syscons/syscons.h (revision 7660b554bc59a07be0431c17e0e33815818baa69)
1 /*-
2  * Copyright (c) 1995-1998 S�ren Schmidt
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef _DEV_SYSCONS_SYSCONS_H_
32 #define	_DEV_SYSCONS_SYSCONS_H_
33 
34 /* machine-dependent part of the header */
35 
36 #ifdef PC98
37 #include <pc98/pc98/sc_machdep.h>
38 #elif defined(__i386__)
39 /* nothing for the moment */
40 #elif defined(__alpha__)
41 /* nothing for the moment */
42 #endif
43 
44 /* default values for configuration options */
45 
46 #ifndef MAXCONS
47 #define MAXCONS		16
48 #endif
49 
50 #ifdef SC_NO_SYSMOUSE
51 #undef SC_NO_CUTPASTE
52 #define SC_NO_CUTPASTE	1
53 #endif
54 
55 #ifdef SC_NO_MODE_CHANGE
56 #undef SC_PIXEL_MODE
57 #endif
58 
59 /* Always load font data if the pixel (raster text) mode is to be used. */
60 #ifdef SC_PIXEL_MODE
61 #undef SC_NO_FONT_LOADING
62 #endif
63 
64 /*
65  * If font data is not available, the `arrow'-shaped mouse cursor cannot
66  * be drawn.  Use the alternative drawing method.
67  */
68 #ifdef SC_NO_FONT_LOADING
69 #undef SC_ALT_MOUSE_IMAGE
70 #define SC_ALT_MOUSE_IMAGE 1
71 #endif
72 
73 #ifndef SC_CURSOR_CHAR
74 #define SC_CURSOR_CHAR	(0x07)
75 #endif
76 
77 #ifndef SC_MOUSE_CHAR
78 #define SC_MOUSE_CHAR	(0xd0)
79 #endif
80 
81 #if SC_MOUSE_CHAR <= SC_CURSOR_CHAR && SC_CURSOR_CHAR < (SC_MOUSE_CHAR + 4)
82 #undef SC_CURSOR_CHAR
83 #define SC_CURSOR_CHAR	(SC_MOUSE_CHAR + 4)
84 #endif
85 
86 #ifndef SC_DEBUG_LEVEL
87 #define SC_DEBUG_LEVEL	0
88 #endif
89 
90 #define DPRINTF(l, p)	if (SC_DEBUG_LEVEL >= (l)) printf p
91 
92 #define SC_DRIVER_NAME	"sc"
93 #define SC_VTY(dev)	minor(dev)
94 #define SC_DEV(sc, vty)	((sc)->dev[(vty) - (sc)->first_vty])
95 #define SC_STAT(dev)	((scr_stat *)(dev)->si_drv1)
96 
97 /* printable chars */
98 #ifndef PRINTABLE
99 #define PRINTABLE(ch)	((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
100 			 || (ch) < 0x07)
101 #endif
102 
103 /* macros for "intelligent" screen update */
104 #define mark_for_update(scp, x)	{\
105 			  	    if ((x) < scp->start) scp->start = (x);\
106 				    else if ((x) > scp->end) scp->end = (x);\
107 				}
108 #define mark_all(scp)		{\
109 				    scp->start = 0;\
110 				    scp->end = scp->xsize * scp->ysize - 1;\
111 				}
112 
113 /* vty status flags (scp->status) */
114 #define UNKNOWN_MODE	0x00010		/* unknown video mode */
115 #define SWITCH_WAIT_REL	0x00080		/* waiting for vty release */
116 #define SWITCH_WAIT_ACQ	0x00100		/* waiting for vty ack */
117 #define BUFFER_SAVED	0x00200		/* vty buffer is saved */
118 #define CURSOR_ENABLED 	0x00400		/* text cursor is enabled */
119 #define MOUSE_MOVED	0x01000		/* mouse cursor has moved */
120 #define MOUSE_CUTTING	0x02000		/* mouse cursor is cutting text */
121 #define MOUSE_VISIBLE	0x04000		/* mouse cursor is showing */
122 #define GRAPHICS_MODE	0x08000		/* vty is in a graphics mode */
123 #define PIXEL_MODE	0x10000		/* vty is in a raster text mode */
124 #define SAVER_RUNNING	0x20000		/* screen saver is running */
125 #define VR_CURSOR_BLINK	0x40000		/* blinking text cursor */
126 #define VR_CURSOR_ON	0x80000		/* text cursor is on */
127 #define MOUSE_HIDDEN	0x100000	/* mouse cursor is temporarily hidden */
128 
129 /* misc defines */
130 #define FALSE		0
131 #define TRUE		1
132 
133 /*
134    The following #defines are hard-coded for a maximum text
135    resolution corresponding to a maximum framebuffer
136    resolution of 1600x1200 with an 8x8 font...
137 */
138 #define	COL		200
139 #define	ROW		150
140 
141 #define PCBURST		128
142 
143 #ifndef BELL_DURATION
144 #define BELL_DURATION	((5 * hz + 99) / 100)
145 #define BELL_PITCH	800
146 #endif
147 
148 /* virtual terminal buffer */
149 typedef struct sc_vtb {
150 	int		vtb_flags;
151 #define VTB_VALID	(1 << 0)
152 #define VTB_ALLOCED	(1 << 1)
153 	int		vtb_type;
154 #define VTB_INVALID	0
155 #define VTB_MEMORY	1
156 #define VTB_FRAMEBUFFER	2
157 #define VTB_RINGBUFFER	3
158 	int		vtb_cols;
159 	int		vtb_rows;
160 	int		vtb_size;
161 	vm_offset_t	vtb_buffer;
162 	int		vtb_tail;	/* valid for VTB_RINGBUFFER only */
163 } sc_vtb_t;
164 
165 /* text cursor attributes */
166 struct cursor_attr {
167 	int		flags;
168 	int		base;
169 	int		height;
170 };
171 
172 /* softc */
173 
174 struct keyboard;
175 struct video_adapter;
176 struct scr_stat;
177 struct tty;
178 
179 typedef struct sc_softc {
180 	int		unit;			/* unit # */
181 	int		config;			/* configuration flags */
182 #define SC_VESA800X600	(1 << 7)
183 #define SC_AUTODETECT_KBD (1 << 8)
184 #define SC_KERNEL_CONSOLE (1 << 9)
185 
186 	int		flags;			/* status flags */
187 #define SC_VISUAL_BELL	(1 << 0)
188 #define SC_QUIET_BELL	(1 << 1)
189 #if 0 /* not used anymore */
190 #define SC_BLINK_CURSOR	(1 << 2)
191 #define SC_CHAR_CURSOR	(1 << 3)
192 #endif
193 #define SC_MOUSE_ENABLED (1 << 4)
194 #define	SC_SCRN_IDLE	(1 << 5)
195 #define	SC_SCRN_BLANKED	(1 << 6)
196 #define	SC_SAVER_FAILED	(1 << 7)
197 #define	SC_SCRN_VTYLOCK	(1 << 8)
198 
199 #define	SC_INIT_DONE	(1 << 16)
200 #define	SC_SPLASH_SCRN	(1 << 17)
201 
202 	int		keyboard;		/* -1 if unavailable */
203 	struct keyboard	*kbd;
204 
205 	int		adapter;
206 	struct video_adapter *adp;
207 	int		initial_mode;		/* initial video mode */
208 
209 	int		first_vty;
210 	int		vtys;
211 	dev_t		*dev;
212 	struct scr_stat	*cur_scp;
213 	struct scr_stat	*new_scp;
214 	struct scr_stat	*old_scp;
215 	int     	delayed_next_scr;
216 
217 	char        	font_loading_in_progress;
218 	char        	switch_in_progress;
219 	char        	videoio_in_progress;
220 	char        	write_in_progress;
221 	char        	blink_in_progress;
222 
223 	long		scrn_time_stamp;
224 
225 	struct cursor_attr dflt_curs_attr;
226 	struct cursor_attr curs_attr;
227 
228 	u_char      	scr_map[256];
229 	u_char      	scr_rmap[256];
230 
231 #ifdef _SC_MD_SOFTC_DECLARED_
232 	sc_md_softc_t	md;			/* machine dependent vars */
233 #endif
234 
235 #ifndef SC_NO_PALETTE_LOADING
236 	u_char        	palette[256*3];
237 #endif
238 
239 #ifndef SC_NO_FONT_LOADING
240 	int     	fonts_loaded;
241 #define FONT_8		2
242 #define FONT_14		4
243 #define FONT_16		8
244 	u_char		*font_8;
245 	u_char		*font_14;
246 	u_char		*font_16;
247 #endif
248 
249 	u_char		cursor_char;
250 	u_char		mouse_char;
251 
252 } sc_softc_t;
253 
254 /* virtual screen */
255 typedef struct scr_stat {
256 	int		index;			/* index of this vty */
257 	struct sc_softc *sc;			/* pointer to softc */
258 	struct sc_rndr_sw *rndr;		/* renderer */
259 #ifndef __sparc64__
260 	sc_vtb_t	scr;
261 #endif
262 	sc_vtb_t	vtb;
263 
264 	int 		xpos;			/* current X position */
265 	int 		ypos;			/* current Y position */
266 	int 		xsize;			/* X text size */
267 	int 		ysize;			/* Y text size */
268 	int 		xpixel;			/* X graphics size */
269 	int 		ypixel;			/* Y graphics size */
270 	int		xoff;			/* X offset in pixel mode */
271 	int		yoff;			/* Y offset in pixel mode */
272 
273 	u_char		*font;			/* current font */
274 	int		font_size;		/* fontsize in Y direction */
275 	int		font_width;		/* fontsize in X direction */
276 
277 	int		start;			/* modified area start */
278 	int		end;			/* modified area end */
279 
280 	struct sc_term_sw *tsw;
281 	void		*ts;
282 
283 	int	 	status;			/* status (bitfield) */
284 	int		kbd_mode;		/* keyboard I/O mode */
285 
286 	int		cursor_pos;		/* cursor buffer position */
287 	int		cursor_oldpos;		/* cursor old buffer position */
288 	u_short		cursor_saveunder_char;	/* saved char under cursor */
289 	u_short		cursor_saveunder_attr;	/* saved attr under cursor */
290 	struct cursor_attr dflt_curs_attr;
291 	struct cursor_attr curr_curs_attr;
292 	struct cursor_attr curs_attr;
293 
294 	int		mouse_pos;		/* mouse buffer position */
295 	int		mouse_oldpos;		/* mouse old buffer position */
296 	short		mouse_xpos;		/* mouse x coordinate */
297 	short		mouse_ypos;		/* mouse y coordinate */
298 	short		mouse_oldxpos;		/* mouse previous x coordinate */
299 	short		mouse_oldypos;		/* mouse previous y coordinate */
300 	short		mouse_buttons;		/* mouse buttons */
301 	int		mouse_cut_start;	/* mouse cut start pos */
302 	int		mouse_cut_end;		/* mouse cut end pos */
303 	struct proc 	*mouse_proc;		/* proc* of controlling proc */
304 	pid_t 		mouse_pid;		/* pid of controlling proc */
305 	int		mouse_signal;		/* signal # to report with */
306 
307 	u_short		bell_duration;
308 	u_short		bell_pitch;
309 
310 	u_char		border;			/* border color */
311 	int	 	mode;			/* mode */
312 	pid_t 		pid;			/* pid of controlling proc */
313 	struct proc 	*proc;			/* proc* of controlling proc */
314 	struct vt_mode 	smode;			/* switch mode */
315 
316 	sc_vtb_t	*history;		/* circular history buffer */
317 	int		history_pos;		/* position shown on screen */
318 	int		history_size;		/* size of history buffer */
319 
320 	int		splash_save_mode;	/* saved mode for splash screen */
321 	int		splash_save_status;	/* saved status for splash screen */
322 #ifdef _SCR_MD_STAT_DECLARED_
323 	scr_md_stat_t	md;			/* machine dependent vars */
324 #endif
325 } scr_stat;
326 
327 #ifndef SC_NORM_ATTR
328 #define SC_NORM_ATTR		(FG_LIGHTGREY | BG_BLACK)
329 #endif
330 #ifndef SC_NORM_REV_ATTR
331 #define SC_NORM_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
332 #endif
333 #ifndef SC_KERNEL_CONS_ATTR
334 #define SC_KERNEL_CONS_ATTR	(FG_WHITE | BG_BLACK)
335 #endif
336 #ifndef SC_KERNEL_CONS_REV_ATTR
337 #define SC_KERNEL_CONS_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
338 #endif
339 
340 /* terminal emulator */
341 
342 #ifndef SC_DFLT_TERM
343 #define SC_DFLT_TERM	"*"			/* any */
344 #endif
345 
346 typedef int	sc_term_init_t(scr_stat *scp, void **tcp, int code);
347 #define SC_TE_COLD_INIT	0
348 #define SC_TE_WARM_INIT	1
349 typedef int	sc_term_term_t(scr_stat *scp, void **tcp);
350 typedef void	sc_term_puts_t(scr_stat *scp, u_char *buf, int len);
351 typedef int	sc_term_ioctl_t(scr_stat *scp, struct tty *tp, u_long cmd,
352 				caddr_t data, int flag, struct thread *td);
353 typedef int	sc_term_reset_t(scr_stat *scp, int code);
354 #define SC_TE_HARD_RESET 0
355 #define SC_TE_SOFT_RESET 1
356 typedef void	sc_term_default_attr_t(scr_stat *scp, int norm, int rev);
357 typedef void	sc_term_clear_t(scr_stat *scp);
358 typedef void	sc_term_notify_t(scr_stat *scp, int event);
359 #define SC_TE_NOTIFY_VTSWITCH_IN	0
360 #define SC_TE_NOTIFY_VTSWITCH_OUT	1
361 typedef int	sc_term_input_t(scr_stat *scp, int c, struct tty *tp);
362 
363 typedef struct sc_term_sw {
364 	LIST_ENTRY(sc_term_sw)	link;
365 	char 			*te_name;	/* name of the emulator */
366 	char 			*te_desc;	/* description */
367 	char 			*te_renderer;	/* matching renderer */
368 	size_t			te_size;	/* size of internal buffer */
369 	int			te_refcount;	/* reference counter */
370 	sc_term_init_t		*te_init;
371 	sc_term_term_t		*te_term;
372 	sc_term_puts_t		*te_puts;
373 	sc_term_ioctl_t		*te_ioctl;
374 	sc_term_reset_t		*te_reset;
375 	sc_term_default_attr_t	*te_default_attr;
376 	sc_term_clear_t		*te_clear;
377 	sc_term_notify_t	*te_notify;
378 	sc_term_input_t		*te_input;
379 } sc_term_sw_t;
380 
381 #define SCTERM_MODULE(name, sw)					\
382 	DATA_SET(scterm_set, sw);				\
383 	static int						\
384 	scterm_##name##_event(module_t mod, int type, void *data) \
385 	{							\
386 		switch (type) {					\
387 		case MOD_LOAD:					\
388 			return sc_term_add(&sw);		\
389 		case MOD_UNLOAD:				\
390 			if (sw.te_refcount > 0)			\
391 				return EBUSY;			\
392 			return sc_term_remove(&sw);		\
393 		default:					\
394 			break;					\
395 		}						\
396 		return 0;					\
397 	}							\
398 	static moduledata_t scterm_##name##_mod = {		\
399 		"scterm-" #name,				\
400 		scterm_##name##_event,				\
401 		NULL,						\
402 	};							\
403 	DECLARE_MODULE(scterm_##name, scterm_##name##_mod,	\
404 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
405 
406 /* renderer function table */
407 typedef void	vr_clear_t(scr_stat *scp, int c, int attr);
408 typedef void	vr_draw_border_t(scr_stat *scp, int color);
409 typedef void	vr_draw_t(scr_stat *scp, int from, int count, int flip);
410 typedef void	vr_set_cursor_t(scr_stat *scp, int base, int height, int blink);
411 typedef void	vr_draw_cursor_t(scr_stat *scp, int at, int blink,
412 				 int on, int flip);
413 typedef void	vr_blink_cursor_t(scr_stat *scp, int at, int flip);
414 typedef void	vr_set_mouse_t(scr_stat *scp);
415 typedef void	vr_draw_mouse_t(scr_stat *scp, int x, int y, int on);
416 
417 typedef struct sc_rndr_sw {
418 	vr_clear_t		*clear;
419 	vr_draw_border_t	*draw_border;
420 	vr_draw_t		*draw;
421 	vr_set_cursor_t		*set_cursor;
422 	vr_draw_cursor_t	*draw_cursor;
423 	vr_blink_cursor_t	*blink_cursor;
424 	vr_set_mouse_t		*set_mouse;
425 	vr_draw_mouse_t		*draw_mouse;
426 } sc_rndr_sw_t;
427 
428 typedef struct sc_renderer {
429 	char			*name;
430 	int			mode;
431 	sc_rndr_sw_t		*rndrsw;
432 	LIST_ENTRY(sc_renderer)	link;
433 } sc_renderer_t;
434 
435 #define RENDERER(name, mode, sw, set)				\
436 	static struct sc_renderer scrndr_##name##_##mode = {	\
437 		#name, mode, &sw				\
438 	};							\
439 	DATA_SET(scrndr_set, scrndr_##name##_##mode);		\
440 	DATA_SET(set, scrndr_##name##_##mode)
441 
442 #define RENDERER_MODULE(name, set)				\
443 	SET_DECLARE(set, sc_renderer_t);			\
444 	static int						\
445 	scrndr_##name##_event(module_t mod, int type, void *data) \
446 	{							\
447 		sc_renderer_t **list;				\
448 		int error = 0;					\
449 		switch (type) {					\
450 		case MOD_LOAD:					\
451 			SET_FOREACH(list, set) {		\
452 				error = sc_render_add(*list);	\
453 				if (error)			\
454 					break;			\
455 			}					\
456 			break;					\
457 		case MOD_UNLOAD:				\
458 			SET_FOREACH(list, set) {		\
459 				error = sc_render_remove(*list);\
460 				if (error)			\
461 					break;			\
462 			}					\
463 			break;					\
464 		default:					\
465 			break;					\
466 		}						\
467 		return error;					\
468 	}							\
469 	static moduledata_t scrndr_##name##_mod = {		\
470 		"scrndr-" #name,				\
471 		scrndr_##name##_event,				\
472 		NULL,						\
473 	};							\
474 	DECLARE_MODULE(scrndr_##name, scrndr_##name##_mod, 	\
475 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
476 
477 typedef struct {
478 	int		cursor_start;
479 	int		cursor_end;
480 	int		shift_state;
481 	int		bell_pitch;
482 } bios_values_t;
483 
484 /* other macros */
485 #define ISTEXTSC(scp)	(!((scp)->status 				\
486 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE)))
487 #define ISGRAPHSC(scp)	(((scp)->status 				\
488 			  & (UNKNOWN_MODE | GRAPHICS_MODE)))
489 #define ISPIXELSC(scp)	(((scp)->status 				\
490 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE))\
491 			  == PIXEL_MODE)
492 #define ISUNKNOWNSC(scp) ((scp)->status & UNKNOWN_MODE)
493 
494 #define ISMOUSEAVAIL(af) ((af) & V_ADP_FONT)
495 #define ISFONTAVAIL(af)	((af) & V_ADP_FONT)
496 #define ISPALAVAIL(af)	((af) & V_ADP_PALETTE)
497 
498 #define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
499 
500 #define kbd_read_char(kbd, wait)					\
501 		(*kbdsw[(kbd)->kb_index]->read_char)((kbd), (wait))
502 #define kbd_check_char(kbd)						\
503 		(*kbdsw[(kbd)->kb_index]->check_char)((kbd))
504 #define kbd_enable(kbd)							\
505 		(*kbdsw[(kbd)->kb_index]->enable)((kbd))
506 #define kbd_disable(kbd)						\
507 		(*kbdsw[(kbd)->kb_index]->disable)((kbd))
508 #define kbd_lock(kbd, lockf)						\
509 		(*kbdsw[(kbd)->kb_index]->lock)((kbd), (lockf))
510 #define kbd_ioctl(kbd, cmd, arg)					\
511 	    (((kbd) == NULL) ?						\
512 		ENODEV : (*kbdsw[(kbd)->kb_index]->ioctl)((kbd), (cmd), (arg)))
513 #define kbd_clear_state(kbd)						\
514 		(*kbdsw[(kbd)->kb_index]->clear_state)((kbd))
515 #define kbd_get_fkeystr(kbd, fkey, len)					\
516 		(*kbdsw[(kbd)->kb_index]->get_fkeystr)((kbd), (fkey), (len))
517 #define kbd_poll(kbd, on)						\
518 		(*kbdsw[(kbd)->kb_index]->poll)((kbd), (on))
519 
520 /* syscons.c */
521 extern int 	(*sc_user_ioctl)(dev_t dev, u_long cmd, caddr_t data,
522 				 int flag, struct thread *td);
523 
524 int		sc_probe_unit(int unit, int flags);
525 int		sc_attach_unit(int unit, int flags);
526 
527 int		set_mode(scr_stat *scp);
528 
529 void		sc_set_border(scr_stat *scp, int color);
530 void		sc_load_font(scr_stat *scp, int page, int size, u_char *font,
531 			     int base, int count);
532 void		sc_save_font(scr_stat *scp, int page, int size, u_char *font,
533 			     int base, int count);
534 void		sc_show_font(scr_stat *scp, int page);
535 
536 void		sc_touch_scrn_saver(void);
537 void		sc_puts(scr_stat *scp, u_char *buf, int len);
538 void		sc_draw_cursor_image(scr_stat *scp);
539 void		sc_remove_cursor_image(scr_stat *scp);
540 void		sc_set_cursor_image(scr_stat *scp);
541 void		sc_change_cursor_shape(scr_stat *scp, int flags,
542 				       int base, int height);
543 int		sc_clean_up(scr_stat *scp);
544 int		sc_switch_scr(sc_softc_t *sc, u_int next_scr);
545 void		sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard);
546 int		sc_init_emulator(scr_stat *scp, char *name);
547 void		sc_paste(scr_stat *scp, u_char *p, int count);
548 void		sc_bell(scr_stat *scp, int pitch, int duration);
549 
550 /* schistory.c */
551 #ifndef SC_NO_HISTORY
552 int		sc_alloc_history_buffer(scr_stat *scp, int lines,
553 					int prev_ysize, int wait);
554 void		sc_free_history_buffer(scr_stat *scp, int prev_ysize);
555 void		sc_hist_save(scr_stat *scp);
556 #define		sc_hist_save_one_line(scp, from)	\
557 		sc_vtb_append(&(scp)->vtb, (from), (scp)->history, (scp)->xsize)
558 int		sc_hist_restore(scr_stat *scp);
559 void		sc_hist_home(scr_stat *scp);
560 void		sc_hist_end(scr_stat *scp);
561 int		sc_hist_up_line(scr_stat *scp);
562 int		sc_hist_down_line(scr_stat *scp);
563 int		sc_hist_ioctl(struct tty *tp, u_long cmd, caddr_t data,
564 			      int flag, struct thread *td);
565 #endif /* SC_NO_HISTORY */
566 
567 /* scmouse.c */
568 #ifndef SC_NO_CUTPASTE
569 void		sc_alloc_cut_buffer(scr_stat *scp, int wait);
570 void		sc_draw_mouse_image(scr_stat *scp);
571 void		sc_remove_mouse_image(scr_stat *scp);
572 int		sc_inside_cutmark(scr_stat *scp, int pos);
573 void		sc_remove_cutmarking(scr_stat *scp);
574 void		sc_remove_all_cutmarkings(sc_softc_t *scp);
575 void		sc_remove_all_mouse(sc_softc_t *scp);
576 void		sc_mouse_paste(scr_stat *scp);
577 #else
578 #define		sc_draw_mouse_image(scp)
579 #define		sc_remove_mouse_image(scp)
580 #define		sc_inside_cutmark(scp, pos)	FALSE
581 #define		sc_remove_cutmarking(scp)
582 #define		sc_remove_all_cutmarkings(scp)
583 #define		sc_remove_all_mouse(scp)
584 #define		sc_mouse_paste(scp)
585 #endif /* SC_NO_CUTPASTE */
586 #ifndef SC_NO_SYSMOUSE
587 void		sc_mouse_move(scr_stat *scp, int x, int y);
588 int		sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data,
589 			       int flag, struct thread *td);
590 #endif /* SC_NO_SYSMOUSE */
591 
592 /* scvidctl.c */
593 int		sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode,
594 				 int xsize, int ysize, int fontsize);
595 int		sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode);
596 int		sc_set_pixel_mode(scr_stat *scp, struct tty *tp,
597 				  int xsize, int ysize, int fontsize);
598 int		sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag,
599 			     struct thread *td);
600 
601 int		sc_render_add(sc_renderer_t *rndr);
602 int		sc_render_remove(sc_renderer_t *rndr);
603 sc_rndr_sw_t	*sc_render_match(scr_stat *scp, char *name, int mode);
604 
605 /* scvtb.c */
606 void		sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows,
607 			    void *buffer, int wait);
608 void		sc_vtb_destroy(sc_vtb_t *vtb);
609 size_t		sc_vtb_size(int cols, int rows);
610 void		sc_vtb_clear(sc_vtb_t *vtb, int c, int attr);
611 
612 int		sc_vtb_getc(sc_vtb_t *vtb, int at);
613 int		sc_vtb_geta(sc_vtb_t *vtb, int at);
614 void		sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a);
615 vm_offset_t	sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a);
616 vm_offset_t	sc_vtb_pointer(sc_vtb_t *vtb, int at);
617 int		sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset);
618 
619 #define		sc_vtb_tail(vtb)	((vtb)->vtb_tail)
620 #define		sc_vtb_rows(vtb)	((vtb)->vtb_rows)
621 #define		sc_vtb_cols(vtb)	((vtb)->vtb_cols)
622 
623 void		sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to,
624 			    int count);
625 void		sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2,
626 			      int count);
627 void		sc_vtb_seek(sc_vtb_t *vtb, int pos);
628 void		sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr);
629 void		sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count);
630 void		sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr);
631 void		sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr);
632 
633 /* sysmouse.c */
634 int		sysmouse_event(mouse_info_t *info);
635 
636 /* scterm.c */
637 void		sc_move_cursor(scr_stat *scp, int x, int y);
638 void		sc_clear_screen(scr_stat *scp);
639 int		sc_term_add(sc_term_sw_t *sw);
640 int		sc_term_remove(sc_term_sw_t *sw);
641 sc_term_sw_t	*sc_term_match(char *name);
642 sc_term_sw_t	*sc_term_match_by_number(int index);
643 
644 /* machine dependent functions */
645 int		sc_max_unit(void);
646 sc_softc_t	*sc_get_softc(int unit, int flags);
647 sc_softc_t	*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd);
648 int		sc_get_cons_priority(int *unit, int *flags);
649 void		sc_get_bios_values(bios_values_t *values);
650 int		sc_tone(int herz);
651 
652 #endif /* !_DEV_SYSCONS_SYSCONS_H_ */
653