xref: /dragonfly/sys/dev/misc/syscons/syscons.h (revision 479ab7f0)
1 /*-
2  * Copyright (c) 1995-1998 Søren Schmidt
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to The DragonFly Project
6  * by Sascha Wildner <saw@online.de>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer,
13  *    without modification, immediately at the beginning of the file.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  *
31  * $FreeBSD: src/sys/dev/syscons/syscons.h,v 1.60.2.6 2002/09/15 22:30:45 dd Exp $
32  */
33 
34 #ifndef _DEV_SYSCONS_SYSCONS_H_
35 #define	_DEV_SYSCONS_SYSCONS_H_
36 
37 #include <sys/malloc.h>
38 
39 MALLOC_DECLARE(M_SYSCONS);
40 
41 /* default values for configuration options */
42 
43 #ifndef MAXCONS
44 #define MAXCONS		16	/* power of 2 */
45 #endif
46 
47 #ifdef SC_NO_SYSMOUSE
48 #undef SC_NO_CUTPASTE
49 #define SC_NO_CUTPASTE	1
50 #endif
51 
52 #ifdef SC_NO_MODE_CHANGE
53 #undef SC_PIXEL_MODE
54 #endif
55 
56 /* Always load font data if the pixel (raster text) mode is to be used. */
57 #ifdef SC_PIXEL_MODE
58 #undef SC_NO_FONT_LOADING
59 #endif
60 
61 /*
62  * If font data is not available, the `arrow'-shaped mouse cursor cannot
63  * be drawn.  Use the alternative drawing method.
64  */
65 #ifdef SC_NO_FONT_LOADING
66 #undef SC_ALT_MOUSE_IMAGE
67 #define SC_ALT_MOUSE_IMAGE 1
68 #endif
69 
70 #ifndef SC_CURSOR_CHAR
71 #define SC_CURSOR_CHAR	(0x07)
72 #endif
73 
74 #ifndef SC_MOUSE_CHAR
75 #define SC_MOUSE_CHAR	(0xd0)
76 #endif
77 
78 #if SC_MOUSE_CHAR <= SC_CURSOR_CHAR && SC_CURSOR_CHAR < (SC_MOUSE_CHAR + 4)
79 #undef SC_CURSOR_CHAR
80 #define SC_CURSOR_CHAR	(SC_MOUSE_CHAR + 4)
81 #endif
82 
83 #ifndef SC_DEBUG_LEVEL
84 #define SC_DEBUG_LEVEL	0
85 #endif
86 
87 #define DPRINTF(l, p)	if (SC_DEBUG_LEVEL >= (l)) kprintf p
88 
89 #define SC_DRIVER_NAME	"sc"
90 #define SC_VTY(dev)	minor(dev)
91 #define SC_DEV(sc, vty)	((sc)->dev ? (sc)->dev[(vty) - (sc)->first_vty] : NULL)
92 #define SC_STAT(dev)	((scr_stat *)(dev)->si_drv1)
93 
94 /* printable chars */
95 #ifndef PRINTABLE
96 #define PRINTABLE(ch)	((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
97 			 || (ch) < 0x07)
98 #endif
99 
100 /* macros for "intelligent" screen update */
101 #define mark_for_update(scp, x)	{\
102 			  	    if ((x) < scp->start) scp->start = (x);\
103 				    else if ((x) > scp->end) scp->end = (x);\
104 				}
105 #define mark_all(scp)		{\
106 				    scp->start = 0;\
107 				    scp->end = scp->xsize * scp->ysize - 1;\
108 				}
109 
110 /* macro for calculating the drawing position in video memory */
111 #ifdef SC_PIXEL_MODE
112 #define	VIDEO_MEMORY_POS(scp, pos, x) 					\
113 	((scp)->sc->adp->va_window +					\
114 	 (x) * (scp)->xoff +						\
115 	 (scp)->yoff * (scp)->font_height * (scp)->sc->adp->va_line_width +\
116 	 (x) * ((pos) % (scp)->xsize) +					\
117 	 (scp)->font_height * (scp)->sc->adp->va_line_width *		\
118 	 (pos / (scp)->xsize))
119 #endif
120 
121 /* vty status flags (scp->status) */
122 #define UNKNOWN_MODE	0x00010		/* unknown video mode */
123 #define SWITCH_WAIT_REL	0x00080		/* waiting for vty release */
124 #define SWITCH_WAIT_ACQ	0x00100		/* waiting for vty ack */
125 #define BUFFER_SAVED	0x00200		/* vty buffer is saved */
126 #define CURSOR_ENABLED 	0x00400		/* text cursor is enabled */
127 #define MOUSE_MOVED	0x01000		/* mouse cursor has moved */
128 #define MOUSE_CUTTING	0x02000		/* mouse cursor is cutting text */
129 #define MOUSE_VISIBLE	0x04000		/* mouse cursor is showing */
130 #define GRAPHICS_MODE	0x08000		/* vty is in a graphics mode */
131 #define PIXEL_MODE	0x10000		/* vty is in a raster text mode */
132 #define SAVER_RUNNING	0x20000		/* screen saver is running */
133 #define VR_CURSOR_BLINK	0x40000		/* blinking text cursor */
134 #define VR_CURSOR_ON	0x80000		/* text cursor is on */
135 #define MOUSE_HIDDEN	0x100000	/* mouse cursor is temporarily hidden */
136 
137 /* misc defines */
138 #define FALSE		0
139 #define TRUE		1
140 #define	COL		80
141 #define	ROW		25
142 #define PCBURST		128
143 
144 #ifndef BELL_DURATION
145 #define BELL_DURATION	((5 * hz + 99) / 100)
146 #define BELL_PITCH	800
147 #endif
148 
149 /* virtual terminal buffer */
150 typedef struct sc_vtb {
151 	int		vtb_flags;
152 #define VTB_VALID	(1 << 0)
153 #define VTB_ALLOCED	(1 << 1)
154 	int		vtb_type;
155 #define VTB_INVALID	0
156 #define VTB_MEMORY	1
157 #define VTB_FRAMEBUFFER	2
158 #define VTB_RINGBUFFER	3
159 	int		vtb_cols;
160 	int		vtb_rows;
161 	int		vtb_size;
162 	uint16_t	*vtb_buffer;
163 	int		vtb_tail;	/* valid for VTB_RINGBUFFER only */
164 } sc_vtb_t;
165 
166 /* softc */
167 
168 struct keyboard;
169 struct video_adapter;
170 struct scr_stat;
171 struct tty;
172 struct dev_ioctl_args;
173 
174 typedef struct sc_softc {
175 	int		unit;			/* unit # */
176 	int		config;			/* configuration flags */
177 #define SC_AUTODETECT_KBD (1 << 8)
178 #define SC_KERNEL_CONSOLE (1 << 9)
179 #define SC_EFI_FB	(1 << 10)
180 
181 	int		flags;			/* status flags */
182 #define SC_VISUAL_BELL	(1 << 0)
183 #define SC_QUIET_BELL	(1 << 1)
184 #define SC_BLINK_CURSOR	(1 << 2)
185 #define SC_CHAR_CURSOR	(1 << 3)
186 #define SC_MOUSE_ENABLED (1 << 4)
187 #define	SC_SCRN_IDLE	(1 << 5)
188 #define	SC_SCRN_BLANKED	(1 << 6)
189 #define	SC_SAVER_FAILED	(1 << 7)
190 #define	SC_SCRN_VTYLOCK	(1 << 8)
191 
192 #define	SC_INIT_DONE	(1 << 16)
193 #define	SC_SPLASH_SCRN	(1 << 17)
194 
195 	int		keyboard;		/* -1 if unavailable */
196 	struct keyboard	*kbd;
197 
198 	int		adapter;
199 	struct video_adapter *adp;
200 	int		initial_mode;		/* initial video mode */
201 
202 	uint64_t	fbi_generation;		/* increment on fbi update */
203 	struct fb_info	*fbi;
204 	struct fb_info	*dummy_fb_info;
205 	struct task	*fb_set_par_task;
206 	struct task	*fb_blank_task;
207 	int		fb_blanked;
208 
209 	int		first_vty;
210 	int		vtys;
211 	cdev_t		*dev;
212 	struct scr_stat	*console_scp;
213 	struct scr_stat	*cur_scp;
214 	struct scr_stat	*new_scp;
215 	struct scr_stat	*old_scp;
216 	int     	delayed_next_scr;
217 	int        	videoio_in_progress;
218 
219 	char        	font_loading_in_progress;
220 	char        	switch_in_progress;
221 	char        	write_in_progress;
222 	char        	blink_in_progress;
223 
224 	long		scrn_time_stamp;
225 	struct callout	scrn_timer_ch;
226 
227 	char		cursor_base;
228 	char		cursor_height;
229 
230 	u_char      	scr_map[256];
231 	u_char      	scr_rmap[256];
232 
233 #ifdef _SC_MD_SOFTC_DECLARED_
234 	sc_md_softc_t	md;			/* machine dependent vars */
235 #endif
236 
237 #ifndef SC_NO_PALETTE_LOADING
238 	u_char        	palette[256*3];
239 #endif
240 
241 #ifndef SC_NO_FONT_LOADING
242 	int     	fonts_loaded;
243 #define FONT_8		2
244 #define FONT_14		4
245 #define FONT_16		8
246 	u_char		*font_8;
247 	u_char		*font_14;
248 	u_char		*font_16;
249 #endif
250 
251 	u_char		cursor_char;
252 	u_char		mouse_char;
253 
254 } sc_softc_t;
255 
256 /* virtual screen */
257 typedef struct scr_stat {
258 	int		index;			/* index of this vty */
259 	struct sc_softc *sc;			/* pointer to softc */
260 	struct sc_rndr_sw *rndr;		/* renderer */
261 	sc_vtb_t	scr;
262 	sc_vtb_t	vtb;
263 	uint64_t	fbi_generation;		/* track fb_info updates */
264 
265 	int 		xpos;			/* current X position */
266 	int 		ypos;			/* current Y position */
267 	int 		xsize;			/* X text size */
268 	int 		ysize;			/* Y text size */
269 	int 		xpixel;			/* X graphics size */
270 	int 		ypixel;			/* Y graphics size */
271 	int		xoff;			/* X offset in pixel mode */
272 	int		yoff;			/* Y offset in pixel mode */
273 
274 	u_char		*font;			/* current font */
275 	int		font_height;		/* font source Y pixels */
276 	int		font_width;		/* font source X pixels */
277 	int		blk_height;		/* fbtarget Y pixels */
278 	int		blk_width;		/* fbtarget X pixels */
279 
280 	int		start;			/* modified area start */
281 	int		end;			/* modified area end */
282 	int		show_cursor;		/* used by async scrn_update */
283 
284 	struct sc_term_sw *tsw;
285 	void		*ts;
286 
287 	int	 	status;			/* status (bitfield) */
288 	int		kbd_mode;		/* keyboard I/O mode */
289 
290 	int		cursor_pos;		/* cursor buffer position */
291 	int		cursor_oldpos;		/* cursor old buffer position */
292 	u_short		cursor_saveunder_char;	/* saved char under cursor */
293 	u_short		cursor_saveunder_attr;	/* saved attr under cursor */
294 	char		cursor_base;		/* cursor base line # */
295 	char		cursor_height;		/* cursor height */
296 
297 	int		mouse_pos;		/* mouse buffer position */
298 	int		mouse_oldpos;		/* mouse old buffer position */
299 	short		mouse_xpos;		/* mouse x coordinate */
300 	short		mouse_ypos;		/* mouse y coordinate */
301 	short		mouse_oldxpos;		/* mouse previous x coordinate */
302 	short		mouse_oldypos;		/* mouse previous y coordinate */
303 	short		mouse_buttons;		/* mouse buttons */
304 	int		mouse_cut_start;	/* mouse cut start pos */
305 	int		mouse_cut_end;		/* mouse cut end pos */
306 	struct proc 	*mouse_proc;		/* proc* of controlling proc */
307 	pid_t 		mouse_pid;		/* pid of controlling proc */
308 	int		mouse_signal;		/* signal # to report with */
309 
310 	u_short		bell_duration;
311 	u_short		bell_pitch;
312 
313 	struct callout	blink_screen_ch;
314 
315 	uint32_t	ega_palette[16];	/* ega palette */
316 	u_char		border;			/* border color */
317 	int	 	mode;			/* mode */
318 	int		model;			/* memory model */
319 	pid_t 		pid;			/* pid of controlling proc */
320 	struct proc 	*proc;			/* proc* of controlling proc */
321 	struct vt_mode 	smode;			/* switch mode */
322 
323 	sc_vtb_t	*history;		/* circular history buffer */
324 	int		history_pos;		/* position shown on screen */
325 	int		history_size;		/* size of history buffer */
326 
327 	int		splash_save_mode;	/* saved mode for splash scr */
328 	int		splash_save_status;	/* saved status for splash scr*/
329 	int		queue_update_td;
330 	struct thread	*asynctd;
331 #ifdef _SCR_MD_STAT_DECLARED_
332 	scr_md_stat_t	md;			/* machine dependent vars */
333 #endif
334 } scr_stat;
335 
336 #ifndef SC_NORM_ATTR
337 #define SC_NORM_ATTR		(FG_LIGHTGREY | BG_BLACK)
338 #endif
339 #ifndef SC_NORM_REV_ATTR
340 #define SC_NORM_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
341 #endif
342 #ifndef SC_KERNEL_CONS_ATTR
343 #define SC_KERNEL_CONS_ATTR	(FG_WHITE | BG_BLACK)
344 #endif
345 #ifndef SC_KERNEL_CONS_REV_ATTR
346 #define SC_KERNEL_CONS_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
347 #endif
348 #ifndef SC_BORDER_COLOR
349 #define SC_BORDER_COLOR		FG_BLACK
350 #endif
351 
352 /* terminal emulator */
353 
354 #ifndef SC_DFLT_TERM
355 #define SC_DFLT_TERM	"*"			/* any */
356 #endif
357 
358 typedef int	sc_term_init_t(scr_stat *scp, void **tcp, int code);
359 #define SC_TE_COLD_INIT	0
360 #define SC_TE_WARM_INIT	1
361 typedef int	sc_term_term_t(scr_stat *scp, void **tcp);
362 typedef void	sc_term_puts_t(scr_stat *scp, u_char *buf, int len);
363 typedef int	sc_term_ioctl_t(scr_stat *scp, struct tty *tp, u_long cmd,
364 				caddr_t data, int flag);
365 typedef int	sc_term_reset_t(scr_stat *scp, int code);
366 #define SC_TE_HARD_RESET 0
367 #define SC_TE_SOFT_RESET 1
368 typedef void	sc_term_default_attr_t(scr_stat *scp, int norm, int rev);
369 typedef void	sc_term_clear_t(scr_stat *scp);
370 typedef void	sc_term_notify_t(scr_stat *scp, int event);
371 #define SC_TE_NOTIFY_VTSWITCH_IN	0
372 #define SC_TE_NOTIFY_VTSWITCH_OUT	1
373 typedef int	sc_term_input_t(scr_stat *scp, int c, struct tty *tp);
374 
375 typedef struct sc_term_sw {
376 	LIST_ENTRY(sc_term_sw)	link;
377 	char 			*te_name;	/* name of the emulator */
378 	char 			*te_desc;	/* description */
379 	char 			*te_renderer;	/* matching renderer */
380 	size_t			te_size;	/* size of internal buffer */
381 	int			te_refcount;	/* reference counter */
382 	sc_term_init_t		*te_init;
383 	sc_term_term_t		*te_term;
384 	sc_term_puts_t		*te_puts;
385 	sc_term_ioctl_t		*te_ioctl;
386 	sc_term_reset_t		*te_reset;
387 	sc_term_default_attr_t	*te_default_attr;
388 	sc_term_clear_t		*te_clear;
389 	sc_term_notify_t	*te_notify;
390 	sc_term_input_t		*te_input;
391 } sc_term_sw_t;
392 
393 extern struct linker_set scterm_set;
394 
395 #define SCTERM_MODULE(name, sw)					\
396 	DATA_SET(scterm_set, sw);				\
397 	static int						\
398 	scterm_##name##_event(module_t mod, int type, void *data) \
399 	{							\
400 		switch (type) {					\
401 		case MOD_LOAD:					\
402 			return sc_term_add(&sw);		\
403 		case MOD_UNLOAD:				\
404 			if (sw.te_refcount > 0)			\
405 				return EBUSY;			\
406 			return sc_term_remove(&sw);		\
407 		default:					\
408 			break;					\
409 		}						\
410 		return 0;					\
411 	}							\
412 	static moduledata_t scterm_##name##_mod = {		\
413 		"scterm-" #name,				\
414 		scterm_##name##_event,				\
415 		NULL,						\
416 	};							\
417 	DECLARE_MODULE(scterm_##name, scterm_##name##_mod,	\
418 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
419 
420 /* renderer function table */
421 typedef void	vr_draw_border_t(scr_stat *scp, int color);
422 typedef void	vr_draw_t(scr_stat *scp, int from, int count, int flip);
423 typedef void	vr_set_cursor_t(scr_stat *scp, int base, int height, int blink);
424 typedef void	vr_draw_cursor_t(scr_stat *scp, int at, int blink,
425 				 int on, int flip);
426 typedef void	vr_blink_cursor_t(scr_stat *scp, int at, int flip);
427 typedef void	vr_set_mouse_t(scr_stat *scp);
428 typedef void	vr_draw_mouse_t(scr_stat *scp, int x, int y, int on);
429 
430 typedef struct sc_rndr_sw {
431 	vr_draw_border_t	*draw_border;
432 	vr_draw_t		*draw;
433 	vr_set_cursor_t		*set_cursor;
434 	vr_draw_cursor_t	*draw_cursor;
435 	vr_blink_cursor_t	*blink_cursor;
436 	vr_draw_mouse_t		*draw_mouse;
437 } sc_rndr_sw_t;
438 
439 typedef struct sc_renderer {
440 	char			*name;
441 	int			model;
442 	sc_rndr_sw_t		*rndrsw;
443 	LIST_ENTRY(sc_renderer)	link;
444 } sc_renderer_t;
445 
446 extern struct linker_set scrndr_set;
447 
448 #define RENDERER(name, model, sw, set)				\
449 	static struct sc_renderer scrndr_##name##_##model = {	\
450 		#name, model, &sw				\
451 	};							\
452 	DATA_SET(scrndr_set, scrndr_##name##_##model);		\
453 	DATA_SET(set, scrndr_##name##_##model)
454 
455 #define RENDERER_MODULE(name, set)				\
456 	SET_DECLARE(set, sc_renderer_t);			\
457 	static int						\
458 	scrndr_##name##_event(module_t mod, int type, void *data) \
459 	{							\
460 		sc_renderer_t **list;				\
461 		int error = 0;					\
462 		switch (type) {					\
463 		case MOD_LOAD:					\
464 			SET_FOREACH(list, set) {		\
465 				error = sc_render_add(*list);	\
466 				if (error)			\
467 					break;			\
468 			}					\
469 			break;					\
470 		case MOD_UNLOAD:				\
471 			SET_FOREACH(list, set) {		\
472 				error = sc_render_remove(*list);	\
473 				if (error)			\
474 					break;			\
475 			}					\
476 			break;					\
477 		default:					\
478 			break;					\
479 		}						\
480 		return error;					\
481 	}							\
482 	static moduledata_t scrndr_##name##_mod = {		\
483 		"scrndr-" #name,				\
484 		scrndr_##name##_event,				\
485 		NULL,						\
486 	};							\
487 	DECLARE_MODULE(scrndr_##name, scrndr_##name##_mod, 	\
488 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
489 
490 typedef struct {
491 	int		cursor_start;
492 	int		cursor_end;
493 	int		shift_state;
494 	int		bell_pitch;
495 } bios_values_t;
496 
497 /* other macros */
498 #define ISTEXTSC(scp)	(!((scp)->status 				\
499 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE)))
500 #define ISGRAPHSC(scp)	(((scp)->status 				\
501 			  & (UNKNOWN_MODE | GRAPHICS_MODE)))
502 #define ISPIXELSC(scp)	(((scp)->status 				\
503 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE))\
504 			  == PIXEL_MODE)
505 #define ISUNKNOWNSC(scp) ((scp)->status & UNKNOWN_MODE)
506 
507 #define ISMOUSEAVAIL(af) ((af) & V_ADP_FONT)
508 #define ISFONTAVAIL(af)	((af) & V_ADP_FONT)
509 #define ISPALAVAIL(af)	((af) & V_ADP_PALETTE)
510 
511 #define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
512 
513 /* syscons.c */
514 int		sc_probe_unit(int unit, int flags);
515 int		sc_attach_unit(int unit, int flags);
516 
517 int		set_mode(scr_stat *scp);
518 void		refresh_ega_palette(scr_stat *scp);
519 
520 void		sc_set_border(scr_stat *scp, int color);
521 void		sc_load_font(scr_stat *scp, int page, int size, u_char *font,
522 			     int base, int count);
523 void		sc_save_font(scr_stat *scp, int page, int size, u_char *font,
524 			     int base, int count);
525 void		sc_show_font(scr_stat *scp, int page);
526 
527 void		sc_start_scrn_saver(sc_softc_t *sc);
528 void		sc_stop_scrn_saver(sc_softc_t *sc);
529 void		sc_touch_scrn_saver(void);
530 void		sc_draw_cursor_image(scr_stat *scp);
531 void		sc_remove_cursor_image(scr_stat *scp);
532 void		sc_set_cursor_image(scr_stat *scp);
533 int		sc_clean_up(scr_stat *scp, int need_unlock);
534 int		sc_switch_scr(sc_softc_t *sc, u_int next_scr);
535 void		sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard);
536 int		sc_init_emulator(scr_stat *scp, char *name);
537 void		sc_paste(scr_stat *scp, u_char *p, int count);
538 void		sc_bell(scr_stat *scp, int pitch, int duration);
539 void		sc_font_scale(scr_stat *scp, int max_cols, int max_rows);
540 
541 /* schistory.c */
542 #ifndef SC_NO_HISTORY
543 int		sc_alloc_history_buffer(scr_stat *scp, int lines,
544 					int prev_ysize, int wait);
545 void		sc_free_history_buffer(scr_stat *scp, int prev_ysize);
546 void		sc_hist_save(scr_stat *scp);
547 #define		sc_hist_save_one_line(scp, from)	\
548 		sc_vtb_append(&(scp)->vtb, (from), (scp)->history, (scp)->xsize)
549 int		sc_hist_restore(scr_stat *scp);
550 void		sc_hist_home(scr_stat *scp);
551 void		sc_hist_getback(scr_stat *scp, int old_ysize);
552 void		sc_hist_end(scr_stat *scp);
553 int		sc_hist_up_line(scr_stat *scp);
554 int		sc_hist_down_line(scr_stat *scp);
555 int		sc_hist_ioctl(struct tty *tp, u_long cmd, caddr_t data,
556 			      int flag);
557 #endif /* SC_NO_HISTORY */
558 
559 /* scmouse.c */
560 #ifndef SC_NO_CUTPASTE
561 void		sc_alloc_cut_buffer(scr_stat *scp, int wait);
562 void		sc_draw_mouse_image(scr_stat *scp);
563 void		sc_remove_mouse_image(scr_stat *scp);
564 int		sc_inside_cutmark(scr_stat *scp, int pos);
565 void		sc_remove_cutmarking(scr_stat *scp);
566 void		sc_remove_all_cutmarkings(sc_softc_t *scp);
567 void		sc_remove_all_mouse(sc_softc_t *scp);
568 #else
569 #define		sc_draw_mouse_image(scp)
570 #define		sc_remove_mouse_image(scp)
571 #define		sc_inside_cutmark(scp, pos)	FALSE
572 #define		sc_remove_cutmarking(scp)
573 #define		sc_remove_all_cutmarkings(scp)
574 #define		sc_remove_all_mouse(scp)
575 #endif /* SC_NO_CUTPASTE */
576 #ifndef SC_NO_SYSMOUSE
577 void		sc_mouse_move(scr_stat *scp, int x, int y);
578 int		sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data,
579 			       int flag);
580 #endif /* SC_NO_SYSMOUSE */
581 
582 /* scvidctl.c */
583 int		sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode,
584 				 int xsize, int ysize, int fontsize);
585 int		sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode);
586 int		sc_set_pixel_mode(scr_stat *scp, struct tty *tp,
587 				  int xsize, int ysize, int fontsize);
588 int		sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data,
589 				  int flag);
590 
591 int		sc_render_add(sc_renderer_t *rndr);
592 int		sc_render_remove(sc_renderer_t *rndr);
593 sc_rndr_sw_t	*sc_render_match(scr_stat *scp, char *name, int model);
594 void		sc_update_render(scr_stat *scp);
595 
596 /* scvtb.c */
597 void		sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows,
598 			    void *buffer, int wait);
599 void		sc_vtb_destroy(sc_vtb_t *vtb);
600 size_t		sc_vtb_size(int cols, int rows);
601 void		sc_vtb_clear(sc_vtb_t *vtb, int c, int attr);
602 
603 int		sc_vtb_getc(sc_vtb_t *vtb, int at);
604 int		sc_vtb_geta(sc_vtb_t *vtb, int at);
605 void		sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a);
606 uint16_t	*sc_vtb_putchar(sc_vtb_t *vtb, uint16_t *p, int c, int a);
607 int		sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset);
608 
609 #define		sc_vtb_tail(vtb)	((vtb)->vtb_tail)
610 #define		sc_vtb_rows(vtb)	((vtb)->vtb_rows)
611 #define		sc_vtb_cols(vtb)	((vtb)->vtb_cols)
612 
613 void		sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to,
614 			    int count);
615 void		sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2,
616 			      int count);
617 void		sc_vtb_seek(sc_vtb_t *vtb, int pos);
618 void		sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr);
619 void		sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count);
620 void		sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr);
621 void		sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr);
622 
623 /* sysmouse.c */
624 int		sysmouse_event(mouse_info_t *info);
625 
626 /* scterm.c */
627 void		sc_move_cursor(scr_stat *scp, int x, int y);
628 void		sc_clear_screen(scr_stat *scp);
629 int		sc_term_add(sc_term_sw_t *sw);
630 int		sc_term_remove(sc_term_sw_t *sw);
631 sc_term_sw_t	*sc_term_match(char *name);
632 sc_term_sw_t	*sc_term_match_by_number(int index);
633 
634 /* machine dependent functions */
635 int		sc_max_unit(void);
636 sc_softc_t	*sc_get_softc(int unit, int flags);
637 sc_softc_t	*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd);
638 int		sc_get_cons_priority(int *unit, int *flags);
639 void		sc_get_bios_values(bios_values_t *values);
640 int		sc_tone(int hertz);
641 
642 #endif /* !_DEV_SYSCONS_SYSCONS_H_ */
643