xref: /dragonfly/sys/dev/misc/syscons/syscons.h (revision f9a239ec)
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: src/sys/dev/syscons/syscons.h,v 1.60.2.6 2002/09/15 22:30:45 dd Exp $
32  * $DragonFly: src/sys/dev/misc/syscons/syscons.h,v 1.9 2005/01/28 21:08:38 swildner Exp $
33  */
34 
35 #ifndef _DEV_SYSCONS_SYSCONS_H_
36 #define	_DEV_SYSCONS_SYSCONS_H_
37 
38 /* machine-dependent part of the header */
39 
40 #ifdef PC98
41 #include <pc98/pc98/sc_machdep.h>
42 #elif defined(__i386__)
43 /* nothing for the moment */
44 #endif
45 
46 /* default values for configuration options */
47 
48 #ifndef MAXCONS
49 #define MAXCONS		16	/* power of 2 */
50 #endif
51 
52 #ifdef SC_NO_SYSMOUSE
53 #undef SC_NO_CUTPASTE
54 #define SC_NO_CUTPASTE	1
55 #endif
56 
57 #ifdef SC_NO_MODE_CHANGE
58 #undef SC_PIXEL_MODE
59 #endif
60 
61 /* Always load font data if the pixel (raster text) mode is to be used. */
62 #ifdef SC_PIXEL_MODE
63 #undef SC_NO_FONT_LOADING
64 #endif
65 
66 /*
67  * If font data is not available, the `arrow'-shaped mouse cursor cannot
68  * be drawn.  Use the alternative drawing method.
69  */
70 #ifdef SC_NO_FONT_LOADING
71 #undef SC_ALT_MOUSE_IMAGE
72 #define SC_ALT_MOUSE_IMAGE 1
73 #endif
74 
75 #ifndef SC_CURSOR_CHAR
76 #define SC_CURSOR_CHAR	(0x07)
77 #endif
78 
79 #ifndef SC_MOUSE_CHAR
80 #define SC_MOUSE_CHAR	(0xd0)
81 #endif
82 
83 #if SC_MOUSE_CHAR <= SC_CURSOR_CHAR && SC_CURSOR_CHAR < (SC_MOUSE_CHAR + 4)
84 #undef SC_CURSOR_CHAR
85 #define SC_CURSOR_CHAR	(SC_MOUSE_CHAR + 4)
86 #endif
87 
88 #ifndef SC_DEBUG_LEVEL
89 #define SC_DEBUG_LEVEL	0
90 #endif
91 
92 #define DPRINTF(l, p)	if (SC_DEBUG_LEVEL >= (l)) printf p
93 
94 #define SC_DRIVER_NAME	"sc"
95 #define SC_VTY(dev)	minor(dev)
96 #define SC_DEV(sc, vty)	((sc)->dev[(vty) - (sc)->first_vty])
97 #define SC_STAT(dev)	((scr_stat *)(dev)->si_drv1)
98 
99 /* printable chars */
100 #ifndef PRINTABLE
101 #define PRINTABLE(ch)	((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
102 			 || (ch) < 0x07)
103 #endif
104 
105 /* macros for "intelligent" screen update */
106 #define mark_for_update(scp, x)	{\
107 			  	    if ((x) < scp->start) scp->start = (x);\
108 				    else if ((x) > scp->end) scp->end = (x);\
109 				}
110 #define mark_all(scp)		{\
111 				    scp->start = 0;\
112 				    scp->end = scp->xsize * scp->ysize - 1;\
113 				}
114 
115 /* vty status flags (scp->status) */
116 #define UNKNOWN_MODE	0x00010		/* unknown video mode */
117 #define SWITCH_WAIT_REL	0x00080		/* waiting for vty release */
118 #define SWITCH_WAIT_ACQ	0x00100		/* waiting for vty ack */
119 #define BUFFER_SAVED	0x00200		/* vty buffer is saved */
120 #define CURSOR_ENABLED 	0x00400		/* text cursor is enabled */
121 #define MOUSE_MOVED	0x01000		/* mouse cursor has moved */
122 #define MOUSE_CUTTING	0x02000		/* mouse cursor is cutting text */
123 #define MOUSE_VISIBLE	0x04000		/* mouse cursor is showing */
124 #define GRAPHICS_MODE	0x08000		/* vty is in a graphics mode */
125 #define PIXEL_MODE	0x10000		/* vty is in a raster text mode */
126 #define SAVER_RUNNING	0x20000		/* screen saver is running */
127 #define VR_CURSOR_BLINK	0x40000		/* blinking text cursor */
128 #define VR_CURSOR_ON	0x80000		/* text cursor is on */
129 #define MOUSE_HIDDEN	0x100000	/* mouse cursor is temporarily hidden */
130 
131 /* misc defines */
132 #define FALSE		0
133 #define TRUE		1
134 #define	COL		80
135 #define	ROW		25
136 #define PCBURST		128
137 
138 #ifndef BELL_DURATION
139 #define BELL_DURATION	((5 * hz + 99) / 100)
140 #define BELL_PITCH	800
141 #endif
142 
143 /* virtual terminal buffer */
144 typedef struct sc_vtb {
145 	int		vtb_flags;
146 #define VTB_VALID	(1 << 0)
147 #define VTB_ALLOCED	(1 << 1)
148 	int		vtb_type;
149 #define VTB_INVALID	0
150 #define VTB_MEMORY	1
151 #define VTB_FRAMEBUFFER	2
152 #define VTB_RINGBUFFER	3
153 	int		vtb_cols;
154 	int		vtb_rows;
155 	int		vtb_size;
156 	vm_offset_t	vtb_buffer;
157 	int		vtb_tail;	/* valid for VTB_RINGBUFFER only */
158 } sc_vtb_t;
159 
160 /* softc */
161 
162 struct keyboard;
163 struct video_adapter;
164 struct scr_stat;
165 struct tty;
166 
167 typedef struct sc_softc {
168 	int		unit;			/* unit # */
169 	int		config;			/* configuration flags */
170 #define SC_VESA800X600	(1 << 7)
171 #define SC_AUTODETECT_KBD (1 << 8)
172 #define SC_KERNEL_CONSOLE (1 << 9)
173 
174 	int		flags;			/* status flags */
175 #define SC_VISUAL_BELL	(1 << 0)
176 #define SC_QUIET_BELL	(1 << 1)
177 #define SC_BLINK_CURSOR	(1 << 2)
178 #define SC_CHAR_CURSOR	(1 << 3)
179 #define SC_MOUSE_ENABLED (1 << 4)
180 #define	SC_SCRN_IDLE	(1 << 5)
181 #define	SC_SCRN_BLANKED	(1 << 6)
182 #define	SC_SAVER_FAILED	(1 << 7)
183 #define	SC_SCRN_VTYLOCK	(1 << 8)
184 
185 #define	SC_INIT_DONE	(1 << 16)
186 #define	SC_SPLASH_SCRN	(1 << 17)
187 
188 	int		keyboard;		/* -1 if unavailable */
189 	struct keyboard	*kbd;
190 
191 	int		adapter;
192 	struct video_adapter *adp;
193 	int		initial_mode;		/* initial video mode */
194 
195 	int		first_vty;
196 	int		vtys;
197 	dev_t		*dev;
198 	struct scr_stat	*cur_scp;
199 	struct scr_stat	*new_scp;
200 	struct scr_stat	*old_scp;
201 	int     	delayed_next_scr;
202 
203 	char        	font_loading_in_progress;
204 	char        	switch_in_progress;
205 	char        	videoio_in_progress;
206 	char        	write_in_progress;
207 	char        	blink_in_progress;
208 
209 	long		scrn_time_stamp;
210 	struct callout	scrn_timer_ch;
211 
212 	char		cursor_base;
213 	char		cursor_height;
214 
215 	u_char      	scr_map[256];
216 	u_char      	scr_rmap[256];
217 
218 #ifdef _SC_MD_SOFTC_DECLARED_
219 	sc_md_softc_t	md;			/* machine dependent vars */
220 #endif
221 
222 #ifndef SC_NO_PALETTE_LOADING
223 	u_char        	palette[256*3];
224 #endif
225 
226 #ifndef SC_NO_FONT_LOADING
227 	int     	fonts_loaded;
228 #define FONT_8		2
229 #define FONT_14		4
230 #define FONT_16		8
231 	u_char		*font_8;
232 	u_char		*font_14;
233 	u_char		*font_16;
234 #endif
235 
236 	u_char		cursor_char;
237 	u_char		mouse_char;
238 
239 } sc_softc_t;
240 
241 /* virtual screen */
242 typedef struct scr_stat {
243 	int		index;			/* index of this vty */
244 	struct sc_softc *sc;			/* pointer to softc */
245 	struct sc_rndr_sw *rndr;		/* renderer */
246 	sc_vtb_t	scr;
247 	sc_vtb_t	vtb;
248 
249 	int 		xpos;			/* current X position */
250 	int 		ypos;			/* current Y position */
251 	int 		xsize;			/* X text size */
252 	int 		ysize;			/* Y text size */
253 	int 		xpixel;			/* X graphics size */
254 	int 		ypixel;			/* Y graphics size */
255 	int		xoff;			/* X offset in pixel mode */
256 	int		yoff;			/* Y offset in pixel mode */
257 
258 	u_char		*font;			/* current font */
259 	int		font_size;		/* fontsize in Y direction */
260 
261 	int		start;			/* modified area start */
262 	int		end;			/* modified area end */
263 
264 	struct sc_term_sw *tsw;
265 	void		*ts;
266 
267 	int	 	status;			/* status (bitfield) */
268 	int		kbd_mode;		/* keyboard I/O mode */
269 
270 	int		cursor_pos;		/* cursor buffer position */
271 	int		cursor_oldpos;		/* cursor old buffer position */
272 	u_short		cursor_saveunder_char;	/* saved char under cursor */
273 	u_short		cursor_saveunder_attr;	/* saved attr under cursor */
274 	char		cursor_base;		/* cursor base line # */
275 	char		cursor_height;		/* cursor height */
276 
277 	int		mouse_pos;		/* mouse buffer position */
278 	int		mouse_oldpos;		/* mouse old buffer position */
279 	short		mouse_xpos;		/* mouse x coordinate */
280 	short		mouse_ypos;		/* mouse y coordinate */
281 	short		mouse_oldxpos;		/* mouse previous x coordinate */
282 	short		mouse_oldypos;		/* mouse previous y coordinate */
283 	short		mouse_buttons;		/* mouse buttons */
284 	int		mouse_cut_start;	/* mouse cut start pos */
285 	int		mouse_cut_end;		/* mouse cut end pos */
286 	struct proc 	*mouse_proc;		/* proc* of controlling proc */
287 	pid_t 		mouse_pid;		/* pid of controlling proc */
288 	int		mouse_signal;		/* signal # to report with */
289 
290 	u_short		bell_duration;
291 	u_short		bell_pitch;
292 
293 	struct callout	blink_screen_ch;
294 
295 	u_char		border;			/* border color */
296 	int	 	mode;			/* mode */
297 	pid_t 		pid;			/* pid of controlling proc */
298 	struct proc 	*proc;			/* proc* of controlling proc */
299 	struct vt_mode 	smode;			/* switch mode */
300 
301 	sc_vtb_t	*history;		/* circular history buffer */
302 	int		history_pos;		/* position shown on screen */
303 	int		history_size;		/* size of history buffer */
304 
305 	int		splash_save_mode;	/* saved mode for splash screen */
306 	int		splash_save_status;	/* saved status for splash screen */
307 #ifdef _SCR_MD_STAT_DECLARED_
308 	scr_md_stat_t	md;			/* machine dependent vars */
309 #endif
310 } scr_stat;
311 
312 #ifndef SC_NORM_ATTR
313 #define SC_NORM_ATTR		(FG_LIGHTGREY | BG_BLACK)
314 #endif
315 #ifndef SC_NORM_REV_ATTR
316 #define SC_NORM_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
317 #endif
318 #ifndef SC_KERNEL_CONS_ATTR
319 #define SC_KERNEL_CONS_ATTR	(FG_WHITE | BG_BLACK)
320 #endif
321 #ifndef SC_KERNEL_CONS_REV_ATTR
322 #define SC_KERNEL_CONS_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
323 #endif
324 
325 /* terminal emulator */
326 
327 #ifndef SC_DFLT_TERM
328 #define SC_DFLT_TERM	"*"			/* any */
329 #endif
330 
331 typedef int	sc_term_init_t(scr_stat *scp, void **tcp, int code);
332 #define SC_TE_COLD_INIT	0
333 #define SC_TE_WARM_INIT	1
334 typedef int	sc_term_term_t(scr_stat *scp, void **tcp);
335 typedef void	sc_term_puts_t(scr_stat *scp, u_char *buf, int len);
336 typedef int	sc_term_ioctl_t(scr_stat *scp, struct tty *tp, u_long cmd,
337 				caddr_t data, int flag, struct thread *td);
338 typedef int	sc_term_reset_t(scr_stat *scp, int code);
339 #define SC_TE_HARD_RESET 0
340 #define SC_TE_SOFT_RESET 1
341 typedef void	sc_term_default_attr_t(scr_stat *scp, int norm, int rev);
342 typedef void	sc_term_clear_t(scr_stat *scp);
343 typedef void	sc_term_notify_t(scr_stat *scp, int event);
344 #define SC_TE_NOTIFY_VTSWITCH_IN	0
345 #define SC_TE_NOTIFY_VTSWITCH_OUT	1
346 typedef int	sc_term_input_t(scr_stat *scp, int c, struct tty *tp);
347 
348 typedef struct sc_term_sw {
349 	LIST_ENTRY(sc_term_sw)	link;
350 	char 			*te_name;	/* name of the emulator */
351 	char 			*te_desc;	/* description */
352 	char 			*te_renderer;	/* matching renderer */
353 	size_t			te_size;	/* size of internal buffer */
354 	int			te_refcount;	/* reference counter */
355 	sc_term_init_t		*te_init;
356 	sc_term_term_t		*te_term;
357 	sc_term_puts_t		*te_puts;
358 	sc_term_ioctl_t		*te_ioctl;
359 	sc_term_reset_t		*te_reset;
360 	sc_term_default_attr_t	*te_default_attr;
361 	sc_term_clear_t		*te_clear;
362 	sc_term_notify_t	*te_notify;
363 	sc_term_input_t		*te_input;
364 } sc_term_sw_t;
365 
366 extern struct linker_set scterm_set;
367 
368 #define SCTERM_MODULE(name, sw)					\
369 	DATA_SET(scterm_set, sw);				\
370 	static int						\
371 	scterm_##name##_event(module_t mod, int type, void *data) \
372 	{							\
373 		switch (type) {					\
374 		case MOD_LOAD:					\
375 			return sc_term_add(&sw);		\
376 		case MOD_UNLOAD:				\
377 			if (sw.te_refcount > 0)			\
378 				return EBUSY;			\
379 			return sc_term_remove(&sw);		\
380 		default:					\
381 			break;					\
382 		}						\
383 		return 0;					\
384 	}							\
385 	static moduledata_t scterm_##name##_mod = {		\
386 		"scterm-" #name,				\
387 		scterm_##name##_event,				\
388 		NULL,						\
389 	};							\
390 	DECLARE_MODULE(scterm_##name, scterm_##name##_mod,	\
391 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
392 
393 /* renderer function table */
394 typedef void	vr_init_t(scr_stat *scp);
395 typedef void	vr_clear_t(scr_stat *scp, int c, int attr);
396 typedef void	vr_draw_border_t(scr_stat *scp, int color);
397 typedef void	vr_draw_t(scr_stat *scp, int from, int count, int flip);
398 typedef void	vr_set_cursor_t(scr_stat *scp, int base, int height, int blink);
399 typedef void	vr_draw_cursor_t(scr_stat *scp, int at, int blink,
400 				 int on, int flip);
401 typedef void	vr_blink_cursor_t(scr_stat *scp, int at, int flip);
402 typedef void	vr_set_mouse_t(scr_stat *scp);
403 typedef void	vr_draw_mouse_t(scr_stat *scp, int x, int y, int on);
404 
405 typedef struct sc_rndr_sw {
406 	vr_init_t		*init;
407 	vr_clear_t		*clear;
408 	vr_draw_border_t	*draw_border;
409 	vr_draw_t		*draw;
410 	vr_set_cursor_t		*set_cursor;
411 	vr_draw_cursor_t	*draw_cursor;
412 	vr_blink_cursor_t	*blink_cursor;
413 	vr_set_mouse_t		*set_mouse;
414 	vr_draw_mouse_t		*draw_mouse;
415 } sc_rndr_sw_t;
416 
417 typedef struct sc_renderer {
418 	char			*name;
419 	int			mode;
420 	sc_rndr_sw_t		*rndrsw;
421 	LIST_ENTRY(sc_renderer)	link;
422 } sc_renderer_t;
423 
424 extern struct linker_set scrndr_set;
425 
426 #define RENDERER(name, mode, sw, set)				\
427 	static struct sc_renderer scrndr_##name##_##mode = {	\
428 		#name, mode, &sw				\
429 	};							\
430 	DATA_SET(scrndr_set, scrndr_##name##_##mode);		\
431 	DATA_SET(set, scrndr_##name##_##mode)
432 
433 #define RENDERER_MODULE(name, set)				\
434 	SET_DECLARE(set, sc_renderer_t);			\
435 	static int						\
436 	scrndr_##name##_event(module_t mod, int type, void *data) \
437 	{							\
438 		sc_renderer_t **list;				\
439 		int error = 0;					\
440 		switch (type) {					\
441 		case MOD_LOAD:					\
442 			SET_FOREACH(list, set) {		\
443 				error = sc_render_add(*list);	\
444 				if (error)			\
445 					break;			\
446 			}					\
447 			break;					\
448 		case MOD_UNLOAD:				\
449 			SET_FOREACH(list, set) {		\
450 				error = sc_render_remove(*list);	\
451 				if (error)			\
452 					break;			\
453 			}					\
454 			break;					\
455 		default:					\
456 			break;					\
457 		}						\
458 		return error;					\
459 	}							\
460 	static moduledata_t scrndr_##name##_mod = {		\
461 		"scrndr-" #name,				\
462 		scrndr_##name##_event,				\
463 		NULL,						\
464 	};							\
465 	DECLARE_MODULE(scrndr_##name, scrndr_##name##_mod, 	\
466 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
467 
468 typedef struct {
469 	int		cursor_start;
470 	int		cursor_end;
471 	int		shift_state;
472 	int		bell_pitch;
473 } bios_values_t;
474 
475 /* other macros */
476 #define ISTEXTSC(scp)	(!((scp)->status 				\
477 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE)))
478 #define ISGRAPHSC(scp)	(((scp)->status 				\
479 			  & (UNKNOWN_MODE | GRAPHICS_MODE)))
480 #define ISPIXELSC(scp)	(((scp)->status 				\
481 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE))\
482 			  == PIXEL_MODE)
483 #define ISUNKNOWNSC(scp) ((scp)->status & UNKNOWN_MODE)
484 
485 #define ISMOUSEAVAIL(af) ((af) & V_ADP_FONT)
486 #define ISFONTAVAIL(af)	((af) & V_ADP_FONT)
487 #define ISPALAVAIL(af)	((af) & V_ADP_PALETTE)
488 
489 #define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
490 
491 #define kbd_read_char(kbd, wait)					\
492 		(*kbdsw[(kbd)->kb_index]->read_char)((kbd), (wait))
493 #define kbd_check_char(kbd)						\
494 		(*kbdsw[(kbd)->kb_index]->check_char)((kbd))
495 #define kbd_enable(kbd)							\
496 		(*kbdsw[(kbd)->kb_index]->enable)((kbd))
497 #define kbd_disable(kbd)						\
498 		(*kbdsw[(kbd)->kb_index]->disable)((kbd))
499 #define kbd_lock(kbd, lockf)						\
500 		(*kbdsw[(kbd)->kb_index]->lock)((kbd), (lockf))
501 #define kbd_ioctl(kbd, cmd, arg)					\
502 	    (((kbd) == NULL) ?						\
503 		ENODEV : (*kbdsw[(kbd)->kb_index]->ioctl)((kbd), (cmd), (arg)))
504 #define kbd_clear_state(kbd)						\
505 		(*kbdsw[(kbd)->kb_index]->clear_state)((kbd))
506 #define kbd_get_fkeystr(kbd, fkey, len)					\
507 		(*kbdsw[(kbd)->kb_index]->get_fkeystr)((kbd), (fkey), (len))
508 #define kbd_poll(kbd, on)						\
509 		(*kbdsw[(kbd)->kb_index]->poll)((kbd), (on))
510 
511 /* syscons.c */
512 extern int 	(*sc_user_ioctl)(dev_t dev, u_long cmd, caddr_t data,
513 				 int flag, struct thread *td);
514 
515 int		sc_probe_unit(int unit, int flags);
516 int		sc_attach_unit(int unit, int flags);
517 
518 int		set_mode(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_touch_scrn_saver(void);
528 void		sc_puts(scr_stat *scp, u_char *buf, int len);
529 void		sc_draw_cursor_image(scr_stat *scp);
530 void		sc_remove_cursor_image(scr_stat *scp);
531 void		sc_set_cursor_image(scr_stat *scp);
532 int		sc_clean_up(scr_stat *scp);
533 int		sc_switch_scr(sc_softc_t *sc, u_int next_scr);
534 void		sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard);
535 int		sc_init_emulator(scr_stat *scp, char *name);
536 void		sc_paste(scr_stat *scp, u_char *p, int count);
537 void		sc_bell(scr_stat *scp, int pitch, int duration);
538 
539 /* schistory.c */
540 #ifndef SC_NO_HISTORY
541 int		sc_alloc_history_buffer(scr_stat *scp, int lines,
542 					int prev_ysize, int wait);
543 void		sc_free_history_buffer(scr_stat *scp, int prev_ysize);
544 void		sc_hist_save(scr_stat *scp);
545 #define		sc_hist_save_one_line(scp, from)	\
546 		sc_vtb_append(&(scp)->vtb, (from), (scp)->history, (scp)->xsize)
547 int		sc_hist_restore(scr_stat *scp);
548 void		sc_hist_home(scr_stat *scp);
549 void		sc_hist_end(scr_stat *scp);
550 int		sc_hist_up_line(scr_stat *scp);
551 int		sc_hist_down_line(scr_stat *scp);
552 int		sc_hist_ioctl(struct tty *tp, u_long cmd, caddr_t data,
553 			      int flag, struct thread *td);
554 #endif /* SC_NO_HISTORY */
555 
556 /* scmouse.c */
557 #ifndef SC_NO_CUTPASTE
558 void		sc_alloc_cut_buffer(scr_stat *scp, int wait);
559 void		sc_draw_mouse_image(scr_stat *scp);
560 void		sc_remove_mouse_image(scr_stat *scp);
561 int		sc_inside_cutmark(scr_stat *scp, int pos);
562 void		sc_remove_cutmarking(scr_stat *scp);
563 void		sc_remove_all_cutmarkings(sc_softc_t *scp);
564 void		sc_remove_all_mouse(sc_softc_t *scp);
565 #else
566 #define		sc_draw_mouse_image(scp)
567 #define		sc_remove_mouse_image(scp)
568 #define		sc_inside_cutmark(scp, pos)	FALSE
569 #define		sc_remove_cutmarking(scp)
570 #define		sc_remove_all_cutmarkings(scp)
571 #define		sc_remove_all_mouse(scp)
572 #endif /* SC_NO_CUTPASTE */
573 #ifndef SC_NO_SYSMOUSE
574 void		sc_mouse_move(scr_stat *scp, int x, int y);
575 int		sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data,
576 			       int flag, struct thread *td);
577 #endif /* SC_NO_SYSMOUSE */
578 
579 /* scvidctl.c */
580 int		sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode,
581 				 int xsize, int ysize, int fontsize);
582 int		sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode);
583 int		sc_set_pixel_mode(scr_stat *scp, struct tty *tp,
584 				  int xsize, int ysize, int fontsize);
585 int		sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag,
586 			     struct thread *td);
587 
588 int		sc_render_add(sc_renderer_t *rndr);
589 int		sc_render_remove(sc_renderer_t *rndr);
590 sc_rndr_sw_t	*sc_render_match(scr_stat *scp, char *name, int mode);
591 
592 /* scvtb.c */
593 void		sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows,
594 			    void *buffer, int wait);
595 void		sc_vtb_destroy(sc_vtb_t *vtb);
596 size_t		sc_vtb_size(int cols, int rows);
597 void		sc_vtb_clear(sc_vtb_t *vtb, int c, int attr);
598 
599 int		sc_vtb_getc(sc_vtb_t *vtb, int at);
600 int		sc_vtb_geta(sc_vtb_t *vtb, int at);
601 void		sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a);
602 vm_offset_t	sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a);
603 vm_offset_t	sc_vtb_pointer(sc_vtb_t *vtb, int at);
604 int		sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset);
605 
606 #define		sc_vtb_tail(vtb)	((vtb)->vtb_tail)
607 #define		sc_vtb_rows(vtb)	((vtb)->vtb_rows)
608 #define		sc_vtb_cols(vtb)	((vtb)->vtb_cols)
609 
610 void		sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to,
611 			    int count);
612 void		sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2,
613 			      int count);
614 void		sc_vtb_seek(sc_vtb_t *vtb, int pos);
615 void		sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr);
616 void		sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count);
617 void		sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr);
618 void		sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr);
619 
620 /* sysmouse.c */
621 int		sysmouse_event(mouse_info_t *info);
622 
623 /* scterm.c */
624 void		sc_move_cursor(scr_stat *scp, int x, int y);
625 void		sc_clear_screen(scr_stat *scp);
626 int		sc_term_add(sc_term_sw_t *sw);
627 int		sc_term_remove(sc_term_sw_t *sw);
628 sc_term_sw_t	*sc_term_match(char *name);
629 sc_term_sw_t	*sc_term_match_by_number(int index);
630 
631 /* machine dependent functions */
632 int		sc_max_unit(void);
633 sc_softc_t	*sc_get_softc(int unit, int flags);
634 sc_softc_t	*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd);
635 int		sc_get_cons_priority(int *unit, int *flags);
636 void		sc_get_bios_values(bios_values_t *values);
637 int		sc_tone(int herz);
638 
639 #endif /* !_DEV_SYSCONS_SYSCONS_H_ */
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