xref: /freebsd/sys/dev/syscons/syscons.h (revision ad30f8e79bd1007cc2476e491bd21b4f5e389e0a)
1 /*-
2  * Copyright (c) 1995-1998 S�ren 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  * $FreeBSD$
32  */
33 
34 #ifndef _DEV_SYSCONS_SYSCONS_H_
35 #define	_DEV_SYSCONS_SYSCONS_H_
36 
37 #include <sys/lock.h>
38 #include <sys/mutex.h>
39 
40 /* machine-dependent part of the header */
41 
42 #ifdef PC98
43 #include <pc98/cbus/sc_machdep.h>
44 #elif defined(__i386__)
45 /* nothing for the moment */
46 #endif
47 
48 /* default values for configuration options */
49 
50 #ifndef MAXCONS
51 #define MAXCONS		16
52 #endif
53 
54 #ifdef SC_NO_SYSMOUSE
55 #undef SC_NO_CUTPASTE
56 #define SC_NO_CUTPASTE	1
57 #endif
58 
59 #ifdef SC_NO_MODE_CHANGE
60 #undef SC_PIXEL_MODE
61 #endif
62 
63 /* Always load font data if the pixel (raster text) mode is to be used. */
64 #ifdef SC_PIXEL_MODE
65 #undef SC_NO_FONT_LOADING
66 #endif
67 
68 /*
69  * If font data is not available, the `arrow'-shaped mouse cursor cannot
70  * be drawn.  Use the alternative drawing method.
71  */
72 #ifdef SC_NO_FONT_LOADING
73 #undef SC_ALT_MOUSE_IMAGE
74 #define SC_ALT_MOUSE_IMAGE 1
75 #endif
76 
77 #ifndef SC_CURSOR_CHAR
78 #define SC_CURSOR_CHAR	(0x07)
79 #endif
80 
81 #ifndef SC_MOUSE_CHAR
82 #define SC_MOUSE_CHAR	(0xd0)
83 #endif
84 
85 #if SC_MOUSE_CHAR <= SC_CURSOR_CHAR && SC_CURSOR_CHAR < (SC_MOUSE_CHAR + 4)
86 #undef SC_CURSOR_CHAR
87 #define SC_CURSOR_CHAR	(SC_MOUSE_CHAR + 4)
88 #endif
89 
90 #ifndef SC_DEBUG_LEVEL
91 #define SC_DEBUG_LEVEL	0
92 #endif
93 
94 #define DPRINTF(l, p)	if (SC_DEBUG_LEVEL >= (l)) printf p
95 
96 #ifndef __sparc64__
97 #define SC_DRIVER_NAME	"sc"
98 #else
99 /*
100  * Use a different driver name on sparc64 so it does not get confused
101  * with the system controller devices which are also termed 'sc' in OFW.
102  */
103 #define SC_DRIVER_NAME	"syscons"
104 #endif
105 #define SC_VTY(dev)	(((sc_ttysoftc *)tty_softc(tp))->st_index)
106 #define SC_DEV(sc, vty)	((sc)->dev[(vty) - (sc)->first_vty])
107 #define SC_STAT(tp)	(*((scr_stat **)&((sc_ttysoftc *)tty_softc(tp))->st_stat))
108 
109 /* printable chars */
110 #ifndef PRINTABLE
111 #define PRINTABLE(ch)	((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
112 			 || (ch) < 0x07)
113 #endif
114 
115 /* macros for "intelligent" screen update */
116 #define mark_for_update(scp, x)	{\
117 			  	    if ((x) < scp->start) scp->start = (x);\
118 				    else if ((x) > scp->end) scp->end = (x);\
119 				}
120 #define mark_all(scp)		{\
121 				    scp->start = 0;\
122 				    scp->end = scp->xsize * scp->ysize - 1;\
123 				}
124 
125 /* vty status flags (scp->status) */
126 #define UNKNOWN_MODE	0x00010		/* unknown video mode */
127 #define SWITCH_WAIT_REL	0x00080		/* waiting for vty release */
128 #define SWITCH_WAIT_ACQ	0x00100		/* waiting for vty ack */
129 #define BUFFER_SAVED	0x00200		/* vty buffer is saved */
130 #define CURSOR_ENABLED 	0x00400		/* text cursor is enabled */
131 #define MOUSE_MOVED	0x01000		/* mouse cursor has moved */
132 #define MOUSE_CUTTING	0x02000		/* mouse cursor is cutting text */
133 #define MOUSE_VISIBLE	0x04000		/* mouse cursor is showing */
134 #define GRAPHICS_MODE	0x08000		/* vty is in a graphics mode */
135 #define PIXEL_MODE	0x10000		/* vty is in a raster text mode */
136 #define SAVER_RUNNING	0x20000		/* screen saver is running */
137 #define VR_CURSOR_BLINK	0x40000		/* blinking text cursor */
138 #define VR_CURSOR_ON	0x80000		/* text cursor is on */
139 #define MOUSE_HIDDEN	0x100000	/* mouse cursor is temporarily hidden */
140 
141 /* misc defines */
142 #define FALSE		0
143 #define TRUE		1
144 
145 /*
146    The following #defines are hard-coded for a maximum text
147    resolution corresponding to a maximum framebuffer
148    resolution of 1600x1200 with an 8x8 font...
149 */
150 #define	COL		200
151 #define	ROW		150
152 
153 #define PCBURST		128
154 
155 #ifndef BELL_DURATION
156 #define BELL_DURATION	((5 * hz + 99) / 100)
157 #define BELL_PITCH	800
158 #endif
159 
160 /* virtual terminal buffer */
161 typedef struct sc_vtb {
162 	int		vtb_flags;
163 #define VTB_VALID	(1 << 0)
164 #define VTB_ALLOCED	(1 << 1)
165 	int		vtb_type;
166 #define VTB_INVALID	0
167 #define VTB_MEMORY	1
168 #define VTB_FRAMEBUFFER	2
169 #define VTB_RINGBUFFER	3
170 	int		vtb_cols;
171 	int		vtb_rows;
172 	int		vtb_size;
173 	vm_offset_t	vtb_buffer;
174 	int		vtb_tail;	/* valid for VTB_RINGBUFFER only */
175 } sc_vtb_t;
176 
177 /* text cursor attributes */
178 struct cursor_attr {
179 	int		flags;
180 	int		base;
181 	int		height;
182 };
183 
184 /* softc */
185 
186 struct keyboard;
187 struct video_adapter;
188 struct scr_stat;
189 struct tty;
190 
191 typedef struct sc_softc {
192 	int		unit;			/* unit # */
193 	int		config;			/* configuration flags */
194 #define SC_VESAMODE	(1 << 7)
195 #define SC_AUTODETECT_KBD (1 << 8)
196 #define SC_KERNEL_CONSOLE (1 << 9)
197 
198 	int		flags;			/* status flags */
199 #define SC_VISUAL_BELL	(1 << 0)
200 #define SC_QUIET_BELL	(1 << 1)
201 #if 0 /* not used anymore */
202 #define SC_BLINK_CURSOR	(1 << 2)
203 #define SC_CHAR_CURSOR	(1 << 3)
204 #endif
205 #define SC_MOUSE_ENABLED (1 << 4)
206 #define	SC_SCRN_IDLE	(1 << 5)
207 #define	SC_SCRN_BLANKED	(1 << 6)
208 #define	SC_SAVER_FAILED	(1 << 7)
209 #define	SC_SCRN_VTYLOCK	(1 << 8)
210 
211 #define	SC_INIT_DONE	(1 << 16)
212 #define	SC_SPLASH_SCRN	(1 << 17)
213 
214 	int		keyboard;		/* -1 if unavailable */
215 	struct keyboard	*kbd;
216 
217 	int		adapter;
218 	struct video_adapter *adp;
219 	int		initial_mode;		/* initial video mode */
220 
221 	int		first_vty;
222 	int		vtys;
223 	struct tty **dev;
224 	struct scr_stat	*cur_scp;
225 	struct scr_stat	*new_scp;
226 	struct scr_stat	*old_scp;
227 	int     	delayed_next_scr;
228 
229 	char        	font_loading_in_progress;
230 	char        	switch_in_progress;
231 	char        	write_in_progress;
232 	char        	blink_in_progress;
233 	char		suspend_in_progress;
234 	struct mtx	video_mtx;
235 
236 	long		scrn_time_stamp;
237 
238 	struct cursor_attr dflt_curs_attr;
239 	struct cursor_attr curs_attr;
240 
241 	u_char      	scr_map[256];
242 	u_char      	scr_rmap[256];
243 
244 #ifdef _SC_MD_SOFTC_DECLARED_
245 	sc_md_softc_t	md;			/* machine dependent vars */
246 #endif
247 
248 #ifndef SC_NO_PALETTE_LOADING
249 	u_char		palette[256 * 3];
250 #ifdef SC_PIXEL_MODE
251 	u_char		palette2[256 * 3];
252 #endif
253 #endif
254 
255 #ifndef SC_NO_FONT_LOADING
256 	int     	fonts_loaded;
257 #define FONT_8		2
258 #define FONT_14		4
259 #define FONT_16		8
260 #define FONT_22		8
261 	u_char		*font_8;
262 	u_char		*font_14;
263 	u_char		*font_16;
264 	u_char		*font_22;
265 #endif
266 
267 	u_char		cursor_char;
268 	u_char		mouse_char;
269 
270 } sc_softc_t;
271 
272 /* virtual screen */
273 typedef struct scr_stat {
274 	int		index;			/* index of this vty */
275 	struct sc_softc *sc;			/* pointer to softc */
276 	struct sc_rndr_sw *rndr;		/* renderer */
277 #ifndef __sparc64__
278 	sc_vtb_t	scr;
279 #endif
280 	sc_vtb_t	vtb;
281 
282 	int 		xpos;			/* current X position */
283 	int 		ypos;			/* current Y position */
284 	int 		xsize;			/* X text size */
285 	int 		ysize;			/* Y text size */
286 	int 		xpixel;			/* X graphics size */
287 	int 		ypixel;			/* Y graphics size */
288 	int		xoff;			/* X offset in pixel mode */
289 	int		yoff;			/* Y offset in pixel mode */
290 
291 	u_char		*font;			/* current font */
292 	int		font_size;		/* fontsize in Y direction */
293 	int		font_width;		/* fontsize in X direction */
294 
295 	int		start;			/* modified area start */
296 	int		end;			/* modified area end */
297 
298 	struct sc_term_sw *tsw;
299 	void		*ts;
300 
301 	int	 	status;			/* status (bitfield) */
302 	int		kbd_mode;		/* keyboard I/O mode */
303 
304 	int		cursor_pos;		/* cursor buffer position */
305 	int		cursor_oldpos;		/* cursor old buffer position */
306 	u_short		cursor_saveunder_char;	/* saved char under cursor */
307 	u_short		cursor_saveunder_attr;	/* saved attr under cursor */
308 	struct cursor_attr dflt_curs_attr;
309 	struct cursor_attr curr_curs_attr;
310 	struct cursor_attr curs_attr;
311 
312 	int		mouse_pos;		/* mouse buffer position */
313 	int		mouse_oldpos;		/* mouse old buffer position */
314 	short		mouse_xpos;		/* mouse x coordinate */
315 	short		mouse_ypos;		/* mouse y coordinate */
316 	short		mouse_oldxpos;		/* mouse previous x coordinate */
317 	short		mouse_oldypos;		/* mouse previous y coordinate */
318 	short		mouse_buttons;		/* mouse buttons */
319 	int		mouse_cut_start;	/* mouse cut start pos */
320 	int		mouse_cut_end;		/* mouse cut end pos */
321 	int		mouse_level;		/* xterm mouse protocol */
322 	struct proc 	*mouse_proc;		/* proc* of controlling proc */
323 	pid_t 		mouse_pid;		/* pid of controlling proc */
324 	int		mouse_signal;		/* signal # to report with */
325 
326 	u_short		bell_duration;
327 	u_short		bell_pitch;
328 
329 	u_char		border;			/* border color */
330 	int	 	mode;			/* mode */
331 	pid_t 		pid;			/* pid of controlling proc */
332 	struct proc 	*proc;			/* proc* of controlling proc */
333 	struct vt_mode 	smode;			/* switch mode */
334 
335 	sc_vtb_t	*history;		/* circular history buffer */
336 	int		history_pos;		/* position shown on screen */
337 	int		history_size;		/* size of history buffer */
338 
339 	int		splash_save_mode;	/* saved mode for splash screen */
340 	int		splash_save_status;	/* saved status for splash screen */
341 	struct mtx	scr_lock;		/* mutex for sc_puts() */
342 #ifdef _SCR_MD_STAT_DECLARED_
343 	scr_md_stat_t	md;			/* machine dependent vars */
344 #endif
345 } scr_stat;
346 
347 /* TTY softc. */
348 typedef struct sc_ttysoftc {
349 	int		st_index;
350 	scr_stat	*st_stat;
351 } sc_ttysoftc;
352 
353 #ifndef SC_NORM_ATTR
354 #define SC_NORM_ATTR		(FG_LIGHTGREY | BG_BLACK)
355 #endif
356 #ifndef SC_NORM_REV_ATTR
357 #define SC_NORM_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
358 #endif
359 #ifndef SC_KERNEL_CONS_ATTR
360 #define SC_KERNEL_CONS_ATTR	(FG_WHITE | BG_BLACK)
361 #endif
362 #ifndef SC_KERNEL_CONS_REV_ATTR
363 #define SC_KERNEL_CONS_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
364 #endif
365 
366 /* terminal emulator */
367 
368 #ifndef SC_DFLT_TERM
369 #define SC_DFLT_TERM	"*"			/* any */
370 #endif
371 
372 typedef int	sc_term_init_t(scr_stat *scp, void **tcp, int code);
373 #define SC_TE_COLD_INIT	0
374 #define SC_TE_WARM_INIT	1
375 typedef int	sc_term_term_t(scr_stat *scp, void **tcp);
376 typedef void	sc_term_puts_t(scr_stat *scp, u_char *buf, int len, int kernel);
377 typedef int	sc_term_ioctl_t(scr_stat *scp, struct tty *tp, u_long cmd,
378 				caddr_t data, struct thread *td);
379 typedef int	sc_term_reset_t(scr_stat *scp, int code);
380 #define SC_TE_HARD_RESET 0
381 #define SC_TE_SOFT_RESET 1
382 typedef void	sc_term_default_attr_t(scr_stat *scp, int norm, int rev);
383 typedef void	sc_term_clear_t(scr_stat *scp);
384 typedef void	sc_term_notify_t(scr_stat *scp, int event);
385 #define SC_TE_NOTIFY_VTSWITCH_IN	0
386 #define SC_TE_NOTIFY_VTSWITCH_OUT	1
387 typedef int	sc_term_input_t(scr_stat *scp, int c, struct tty *tp);
388 typedef const char *sc_term_fkeystr_t(scr_stat *scp, int c);
389 
390 typedef struct sc_term_sw {
391 	LIST_ENTRY(sc_term_sw)	link;
392 	char 			*te_name;	/* name of the emulator */
393 	char 			*te_desc;	/* description */
394 	char 			*te_renderer;	/* matching renderer */
395 	size_t			te_size;	/* size of internal buffer */
396 	int			te_refcount;	/* reference counter */
397 	sc_term_init_t		*te_init;
398 	sc_term_term_t		*te_term;
399 	sc_term_puts_t		*te_puts;
400 	sc_term_ioctl_t		*te_ioctl;
401 	sc_term_reset_t		*te_reset;
402 	sc_term_default_attr_t	*te_default_attr;
403 	sc_term_clear_t		*te_clear;
404 	sc_term_notify_t	*te_notify;
405 	sc_term_input_t		*te_input;
406 	sc_term_fkeystr_t	*te_fkeystr;
407 } sc_term_sw_t;
408 
409 #define SCTERM_MODULE(name, sw)					\
410 	DATA_SET(scterm_set, sw);				\
411 	static int						\
412 	scterm_##name##_event(module_t mod, int type, void *data) \
413 	{							\
414 		switch (type) {					\
415 		case MOD_LOAD:					\
416 			return sc_term_add(&sw);		\
417 		case MOD_UNLOAD:				\
418 			if (sw.te_refcount > 0)			\
419 				return EBUSY;			\
420 			return sc_term_remove(&sw);		\
421 		default:					\
422 			return EOPNOTSUPP;			\
423 			break;					\
424 		}						\
425 		return 0;					\
426 	}							\
427 	static moduledata_t scterm_##name##_mod = {		\
428 		"scterm-" #name,				\
429 		scterm_##name##_event,				\
430 		NULL,						\
431 	};							\
432 	DECLARE_MODULE(scterm_##name, scterm_##name##_mod,	\
433 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
434 
435 /* renderer function table */
436 typedef void	vr_init_t(scr_stat *scp);
437 typedef void	vr_clear_t(scr_stat *scp, int c, int attr);
438 typedef void	vr_draw_border_t(scr_stat *scp, int color);
439 typedef void	vr_draw_t(scr_stat *scp, int from, int count, int flip);
440 typedef void	vr_set_cursor_t(scr_stat *scp, int base, int height, int blink);
441 typedef void	vr_draw_cursor_t(scr_stat *scp, int at, int blink,
442 				 int on, int flip);
443 typedef void	vr_blink_cursor_t(scr_stat *scp, int at, int flip);
444 typedef void	vr_set_mouse_t(scr_stat *scp);
445 typedef void	vr_draw_mouse_t(scr_stat *scp, int x, int y, int on);
446 
447 typedef struct sc_rndr_sw {
448 	vr_init_t		*init;
449 	vr_clear_t		*clear;
450 	vr_draw_border_t	*draw_border;
451 	vr_draw_t		*draw;
452 	vr_set_cursor_t		*set_cursor;
453 	vr_draw_cursor_t	*draw_cursor;
454 	vr_blink_cursor_t	*blink_cursor;
455 	vr_set_mouse_t		*set_mouse;
456 	vr_draw_mouse_t		*draw_mouse;
457 } sc_rndr_sw_t;
458 
459 typedef struct sc_renderer {
460 	char			*name;
461 	int			mode;
462 	sc_rndr_sw_t		*rndrsw;
463 	LIST_ENTRY(sc_renderer)	link;
464 } sc_renderer_t;
465 
466 #define RENDERER(name, mode, sw, set)				\
467 	static struct sc_renderer scrndr_##name##_##mode = {	\
468 		#name, mode, &sw				\
469 	};							\
470 	DATA_SET(scrndr_set, scrndr_##name##_##mode);		\
471 	DATA_SET(set, scrndr_##name##_##mode)
472 
473 #define RENDERER_MODULE(name, set)				\
474 	SET_DECLARE(set, sc_renderer_t);			\
475 	static int						\
476 	scrndr_##name##_event(module_t mod, int type, void *data) \
477 	{							\
478 		sc_renderer_t **list;				\
479 		int error = 0;					\
480 		switch (type) {					\
481 		case MOD_LOAD:					\
482 			SET_FOREACH(list, set) {		\
483 				error = sc_render_add(*list);	\
484 				if (error)			\
485 					break;			\
486 			}					\
487 			break;					\
488 		case MOD_UNLOAD:				\
489 			SET_FOREACH(list, set) {		\
490 				error = sc_render_remove(*list);\
491 				if (error)			\
492 					break;			\
493 			}					\
494 			break;					\
495 		default:					\
496 			return EOPNOTSUPP;			\
497 			break;					\
498 		}						\
499 		return error;					\
500 	}							\
501 	static moduledata_t scrndr_##name##_mod = {		\
502 		"scrndr-" #name,				\
503 		scrndr_##name##_event,				\
504 		NULL,						\
505 	};							\
506 	DECLARE_MODULE(scrndr_##name, scrndr_##name##_mod, 	\
507 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
508 
509 typedef struct {
510 	int		cursor_start;
511 	int		cursor_end;
512 	int		shift_state;
513 	int		bell_pitch;
514 } bios_values_t;
515 
516 /* other macros */
517 #define ISTEXTSC(scp)	(!((scp)->status 				\
518 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE)))
519 #define ISGRAPHSC(scp)	(((scp)->status 				\
520 			  & (UNKNOWN_MODE | GRAPHICS_MODE)))
521 #define ISPIXELSC(scp)	(((scp)->status 				\
522 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE))\
523 			  == PIXEL_MODE)
524 #define ISUNKNOWNSC(scp) ((scp)->status & UNKNOWN_MODE)
525 
526 #define ISMOUSEAVAIL(af) ((af) & V_ADP_FONT)
527 #define ISFONTAVAIL(af)	((af) & V_ADP_FONT)
528 #define ISPALAVAIL(af)	((af) & V_ADP_PALETTE)
529 
530 #define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
531 
532 #define SC_VIDEO_LOCKINIT(sc)						\
533 		mtx_init(&(sc)->video_mtx, "syscons video lock", NULL,	\
534 		    MTX_SPIN | MTX_RECURSE);
535 #define SC_VIDEO_LOCK(sc)						\
536 		do {							\
537 			if (!cold)					\
538 				mtx_lock_spin(&(sc)->video_mtx);	\
539 		} while(0)
540 #define SC_VIDEO_UNLOCK(sc)						\
541 		do {							\
542 			if (!cold)					\
543 				mtx_unlock_spin(&(sc)->video_mtx);	\
544 		} while(0)
545 
546 /* syscons.c */
547 extern int 	(*sc_user_ioctl)(struct tty *tp, u_long cmd, caddr_t data,
548 				 struct thread *td);
549 
550 int		sc_probe_unit(int unit, int flags);
551 int		sc_attach_unit(int unit, int flags);
552 
553 int		set_mode(scr_stat *scp);
554 
555 void		sc_set_border(scr_stat *scp, int color);
556 void		sc_load_font(scr_stat *scp, int page, int size, int width,
557 			     u_char *font, int base, int count);
558 void		sc_save_font(scr_stat *scp, int page, int size, int width,
559 			     u_char *font, int base, int count);
560 void		sc_show_font(scr_stat *scp, int page);
561 
562 void		sc_touch_scrn_saver(void);
563 void		sc_puts(scr_stat *scp, u_char *buf, int len, int kernel);
564 void		sc_draw_cursor_image(scr_stat *scp);
565 void		sc_remove_cursor_image(scr_stat *scp);
566 void		sc_set_cursor_image(scr_stat *scp);
567 void		sc_change_cursor_shape(scr_stat *scp, int flags,
568 				       int base, int height);
569 int		sc_clean_up(scr_stat *scp);
570 int		sc_switch_scr(sc_softc_t *sc, u_int next_scr);
571 void		sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard);
572 int		sc_init_emulator(scr_stat *scp, char *name);
573 void		sc_paste(scr_stat *scp, const u_char *p, int count);
574 void		sc_respond(scr_stat *scp, const u_char *p,
575 			   int count, int wakeup);
576 void		sc_bell(scr_stat *scp, int pitch, int duration);
577 
578 /* schistory.c */
579 #ifndef SC_NO_HISTORY
580 int		sc_alloc_history_buffer(scr_stat *scp, int lines,
581 					int prev_ysize, int wait);
582 void		sc_free_history_buffer(scr_stat *scp, int prev_ysize);
583 void		sc_hist_save(scr_stat *scp);
584 #define		sc_hist_save_one_line(scp, from)	\
585 		sc_vtb_append(&(scp)->vtb, (from), (scp)->history, (scp)->xsize)
586 int		sc_hist_restore(scr_stat *scp);
587 void		sc_hist_home(scr_stat *scp);
588 void		sc_hist_end(scr_stat *scp);
589 int		sc_hist_up_line(scr_stat *scp);
590 int		sc_hist_down_line(scr_stat *scp);
591 int		sc_hist_ioctl(struct tty *tp, u_long cmd, caddr_t data,
592 			      struct thread *td);
593 #endif /* SC_NO_HISTORY */
594 
595 /* scmouse.c */
596 #ifndef SC_NO_CUTPASTE
597 void		sc_alloc_cut_buffer(scr_stat *scp, int wait);
598 void		sc_draw_mouse_image(scr_stat *scp);
599 void		sc_remove_mouse_image(scr_stat *scp);
600 int		sc_inside_cutmark(scr_stat *scp, int pos);
601 void		sc_remove_cutmarking(scr_stat *scp);
602 void		sc_remove_all_cutmarkings(sc_softc_t *scp);
603 void		sc_remove_all_mouse(sc_softc_t *scp);
604 void		sc_mouse_paste(scr_stat *scp);
605 #else
606 #define		sc_draw_mouse_image(scp)
607 #define		sc_remove_mouse_image(scp)
608 #define		sc_inside_cutmark(scp, pos)	FALSE
609 #define		sc_remove_cutmarking(scp)
610 #define		sc_remove_all_cutmarkings(scp)
611 #define		sc_remove_all_mouse(scp)
612 #define		sc_mouse_paste(scp)
613 #endif /* SC_NO_CUTPASTE */
614 #ifndef SC_NO_SYSMOUSE
615 void		sc_mouse_move(scr_stat *scp, int x, int y);
616 int		sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data,
617 			       struct thread *td);
618 #endif /* SC_NO_SYSMOUSE */
619 
620 /* scvidctl.c */
621 int		sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode,
622 				 int xsize, int ysize, int fontsize,
623 				 int font_width);
624 int		sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode);
625 int		sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize,
626 				  int ysize, int fontsize, int font_width);
627 int		sc_support_pixel_mode(void *arg);
628 int		sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data,
629 			     struct thread *td);
630 
631 int		sc_render_add(sc_renderer_t *rndr);
632 int		sc_render_remove(sc_renderer_t *rndr);
633 sc_rndr_sw_t	*sc_render_match(scr_stat *scp, char *name, int mode);
634 
635 /* scvtb.c */
636 void		sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows,
637 			    void *buffer, int wait);
638 void		sc_vtb_destroy(sc_vtb_t *vtb);
639 size_t		sc_vtb_size(int cols, int rows);
640 void		sc_vtb_clear(sc_vtb_t *vtb, int c, int attr);
641 
642 int		sc_vtb_getc(sc_vtb_t *vtb, int at);
643 int		sc_vtb_geta(sc_vtb_t *vtb, int at);
644 void		sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a);
645 vm_offset_t	sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a);
646 vm_offset_t	sc_vtb_pointer(sc_vtb_t *vtb, int at);
647 int		sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset);
648 
649 #define		sc_vtb_tail(vtb)	((vtb)->vtb_tail)
650 #define		sc_vtb_rows(vtb)	((vtb)->vtb_rows)
651 #define		sc_vtb_cols(vtb)	((vtb)->vtb_cols)
652 
653 void		sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to,
654 			    int count);
655 void		sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2,
656 			      int count);
657 void		sc_vtb_seek(sc_vtb_t *vtb, int pos);
658 void		sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr);
659 void		sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count);
660 void		sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr);
661 void		sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr);
662 
663 /* sysmouse.c */
664 int		sysmouse_event(mouse_info_t *info);
665 
666 /* scterm.c */
667 void		sc_move_cursor(scr_stat *scp, int x, int y);
668 void		sc_clear_screen(scr_stat *scp);
669 int		sc_term_add(sc_term_sw_t *sw);
670 int		sc_term_remove(sc_term_sw_t *sw);
671 sc_term_sw_t	*sc_term_match(char *name);
672 sc_term_sw_t	*sc_term_match_by_number(int index);
673 
674 /* machine dependent functions */
675 int		sc_max_unit(void);
676 sc_softc_t	*sc_get_softc(int unit, int flags);
677 sc_softc_t	*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd);
678 int		sc_get_cons_priority(int *unit, int *flags);
679 void		sc_get_bios_values(bios_values_t *values);
680 int		sc_tone(int herz);
681 
682 #endif /* !_DEV_SYSCONS_SYSCONS_H_ */
683