xref: /dragonfly/sys/dev/misc/syscons/syscons.h (revision 71126e33)
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 1.8 2004/09/19 02:11:56 dillon 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 #elif defined(__alpha__)
45 /* nothing for the moment */
46 #endif
47 
48 /* default values for configuration options */
49 
50 #ifndef MAXCONS
51 #define MAXCONS		16	/* power of 2 */
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 #define SC_DRIVER_NAME	"sc"
97 #define SC_VTY(dev)	minor(dev)
98 #define SC_DEV(sc, vty)	((sc)->dev[(vty) - (sc)->first_vty])
99 #define SC_STAT(dev)	((scr_stat *)(dev)->si_drv1)
100 
101 /* printable chars */
102 #ifndef PRINTABLE
103 #define PRINTABLE(ch)	((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
104 			 || (ch) < 0x07)
105 #endif
106 
107 /* macros for "intelligent" screen update */
108 #define mark_for_update(scp, x)	{\
109 			  	    if ((x) < scp->start) scp->start = (x);\
110 				    else if ((x) > scp->end) scp->end = (x);\
111 				}
112 #define mark_all(scp)		{\
113 				    scp->start = 0;\
114 				    scp->end = scp->xsize * scp->ysize - 1;\
115 				}
116 
117 /* vty status flags (scp->status) */
118 #define UNKNOWN_MODE	0x00010		/* unknown video mode */
119 #define SWITCH_WAIT_REL	0x00080		/* waiting for vty release */
120 #define SWITCH_WAIT_ACQ	0x00100		/* waiting for vty ack */
121 #define BUFFER_SAVED	0x00200		/* vty buffer is saved */
122 #define CURSOR_ENABLED 	0x00400		/* text cursor is enabled */
123 #define MOUSE_MOVED	0x01000		/* mouse cursor has moved */
124 #define MOUSE_CUTTING	0x02000		/* mouse cursor is cutting text */
125 #define MOUSE_VISIBLE	0x04000		/* mouse cursor is showing */
126 #define GRAPHICS_MODE	0x08000		/* vty is in a graphics mode */
127 #define PIXEL_MODE	0x10000		/* vty is in a raster text mode */
128 #define SAVER_RUNNING	0x20000		/* screen saver is running */
129 #define VR_CURSOR_BLINK	0x40000		/* blinking text cursor */
130 #define VR_CURSOR_ON	0x80000		/* text cursor is on */
131 #define MOUSE_HIDDEN	0x100000	/* mouse cursor is temporarily hidden */
132 
133 /* misc defines */
134 #define FALSE		0
135 #define TRUE		1
136 #define	COL		80
137 #define	ROW		25
138 #define PCBURST		128
139 
140 #ifndef BELL_DURATION
141 #define BELL_DURATION	((5 * hz + 99) / 100)
142 #define BELL_PITCH	800
143 #endif
144 
145 /* virtual terminal buffer */
146 typedef struct sc_vtb {
147 	int		vtb_flags;
148 #define VTB_VALID	(1 << 0)
149 #define VTB_ALLOCED	(1 << 1)
150 	int		vtb_type;
151 #define VTB_INVALID	0
152 #define VTB_MEMORY	1
153 #define VTB_FRAMEBUFFER	2
154 #define VTB_RINGBUFFER	3
155 	int		vtb_cols;
156 	int		vtb_rows;
157 	int		vtb_size;
158 	vm_offset_t	vtb_buffer;
159 	int		vtb_tail;	/* valid for VTB_RINGBUFFER only */
160 } sc_vtb_t;
161 
162 /* softc */
163 
164 struct keyboard;
165 struct video_adapter;
166 struct scr_stat;
167 struct tty;
168 
169 typedef struct sc_softc {
170 	int		unit;			/* unit # */
171 	int		config;			/* configuration flags */
172 #define SC_VESA800X600	(1 << 7)
173 #define SC_AUTODETECT_KBD (1 << 8)
174 #define SC_KERNEL_CONSOLE (1 << 9)
175 
176 	int		flags;			/* status flags */
177 #define SC_VISUAL_BELL	(1 << 0)
178 #define SC_QUIET_BELL	(1 << 1)
179 #define SC_BLINK_CURSOR	(1 << 2)
180 #define SC_CHAR_CURSOR	(1 << 3)
181 #define SC_MOUSE_ENABLED (1 << 4)
182 #define	SC_SCRN_IDLE	(1 << 5)
183 #define	SC_SCRN_BLANKED	(1 << 6)
184 #define	SC_SAVER_FAILED	(1 << 7)
185 #define	SC_SCRN_VTYLOCK	(1 << 8)
186 
187 #define	SC_INIT_DONE	(1 << 16)
188 #define	SC_SPLASH_SCRN	(1 << 17)
189 
190 	int		keyboard;		/* -1 if unavailable */
191 	struct keyboard	*kbd;
192 
193 	int		adapter;
194 	struct video_adapter *adp;
195 	int		initial_mode;		/* initial video mode */
196 
197 	int		first_vty;
198 	int		vtys;
199 	dev_t		*dev;
200 	struct scr_stat	*cur_scp;
201 	struct scr_stat	*new_scp;
202 	struct scr_stat	*old_scp;
203 	int     	delayed_next_scr;
204 
205 	char        	font_loading_in_progress;
206 	char        	switch_in_progress;
207 	char        	videoio_in_progress;
208 	char        	write_in_progress;
209 	char        	blink_in_progress;
210 
211 	long		scrn_time_stamp;
212 	struct callout	scrn_timer_ch;
213 
214 	char		cursor_base;
215 	char		cursor_height;
216 
217 	u_char      	scr_map[256];
218 	u_char      	scr_rmap[256];
219 
220 #ifdef _SC_MD_SOFTC_DECLARED_
221 	sc_md_softc_t	md;			/* machine dependent vars */
222 #endif
223 
224 #ifndef SC_NO_PALETTE_LOADING
225 	u_char        	palette[256*3];
226 #endif
227 
228 #ifndef SC_NO_FONT_LOADING
229 	int     	fonts_loaded;
230 #define FONT_8		2
231 #define FONT_14		4
232 #define FONT_16		8
233 	u_char		*font_8;
234 	u_char		*font_14;
235 	u_char		*font_16;
236 #endif
237 
238 	u_char		cursor_char;
239 	u_char		mouse_char;
240 
241 } sc_softc_t;
242 
243 /* virtual screen */
244 typedef struct scr_stat {
245 	int		index;			/* index of this vty */
246 	struct sc_softc *sc;			/* pointer to softc */
247 	struct sc_rndr_sw *rndr;		/* renderer */
248 	sc_vtb_t	scr;
249 	sc_vtb_t	vtb;
250 
251 	int 		xpos;			/* current X position */
252 	int 		ypos;			/* current Y position */
253 	int 		xsize;			/* X text size */
254 	int 		ysize;			/* Y text size */
255 	int 		xpixel;			/* X graphics size */
256 	int 		ypixel;			/* Y graphics size */
257 	int		xoff;			/* X offset in pixel mode */
258 	int		yoff;			/* Y offset in pixel mode */
259 
260 	u_char		*font;			/* current font */
261 	int		font_size;		/* fontsize in Y direction */
262 
263 	int		start;			/* modified area start */
264 	int		end;			/* modified area end */
265 
266 	struct sc_term_sw *tsw;
267 	void		*ts;
268 
269 	int	 	status;			/* status (bitfield) */
270 	int		kbd_mode;		/* keyboard I/O mode */
271 
272 	int		cursor_pos;		/* cursor buffer position */
273 	int		cursor_oldpos;		/* cursor old buffer position */
274 	u_short		cursor_saveunder_char;	/* saved char under cursor */
275 	u_short		cursor_saveunder_attr;	/* saved attr under cursor */
276 	char		cursor_base;		/* cursor base line # */
277 	char		cursor_height;		/* cursor height */
278 
279 	int		mouse_pos;		/* mouse buffer position */
280 	int		mouse_oldpos;		/* mouse old buffer position */
281 	short		mouse_xpos;		/* mouse x coordinate */
282 	short		mouse_ypos;		/* mouse y coordinate */
283 	short		mouse_oldxpos;		/* mouse previous x coordinate */
284 	short		mouse_oldypos;		/* mouse previous y coordinate */
285 	short		mouse_buttons;		/* mouse buttons */
286 	int		mouse_cut_start;	/* mouse cut start pos */
287 	int		mouse_cut_end;		/* mouse cut end pos */
288 	struct proc 	*mouse_proc;		/* proc* of controlling proc */
289 	pid_t 		mouse_pid;		/* pid of controlling proc */
290 	int		mouse_signal;		/* signal # to report with */
291 
292 	u_short		bell_duration;
293 	u_short		bell_pitch;
294 
295 	struct callout	blink_screen_ch;
296 
297 	u_char		border;			/* border color */
298 	int	 	mode;			/* mode */
299 	pid_t 		pid;			/* pid of controlling proc */
300 	struct proc 	*proc;			/* proc* of controlling proc */
301 	struct vt_mode 	smode;			/* switch mode */
302 
303 	sc_vtb_t	*history;		/* circular history buffer */
304 	int		history_pos;		/* position shown on screen */
305 	int		history_size;		/* size of history buffer */
306 
307 	int		splash_save_mode;	/* saved mode for splash screen */
308 	int		splash_save_status;	/* saved status for splash screen */
309 #ifdef _SCR_MD_STAT_DECLARED_
310 	scr_md_stat_t	md;			/* machine dependent vars */
311 #endif
312 } scr_stat;
313 
314 #ifndef SC_NORM_ATTR
315 #define SC_NORM_ATTR		(FG_LIGHTGREY | BG_BLACK)
316 #endif
317 #ifndef SC_NORM_REV_ATTR
318 #define SC_NORM_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
319 #endif
320 #ifndef SC_KERNEL_CONS_ATTR
321 #define SC_KERNEL_CONS_ATTR	(FG_WHITE | BG_BLACK)
322 #endif
323 #ifndef SC_KERNEL_CONS_REV_ATTR
324 #define SC_KERNEL_CONS_REV_ATTR	(FG_BLACK | BG_LIGHTGREY)
325 #endif
326 
327 /* terminal emulator */
328 
329 #ifndef SC_DFLT_TERM
330 #define SC_DFLT_TERM	"*"			/* any */
331 #endif
332 
333 typedef int	sc_term_init_t(scr_stat *scp, void **tcp, int code);
334 #define SC_TE_COLD_INIT	0
335 #define SC_TE_WARM_INIT	1
336 typedef int	sc_term_term_t(scr_stat *scp, void **tcp);
337 typedef void	sc_term_puts_t(scr_stat *scp, u_char *buf, int len);
338 typedef int	sc_term_ioctl_t(scr_stat *scp, struct tty *tp, u_long cmd,
339 				caddr_t data, int flag, struct thread *td);
340 typedef int	sc_term_reset_t(scr_stat *scp, int code);
341 #define SC_TE_HARD_RESET 0
342 #define SC_TE_SOFT_RESET 1
343 typedef void	sc_term_default_attr_t(scr_stat *scp, int norm, int rev);
344 typedef void	sc_term_clear_t(scr_stat *scp);
345 typedef void	sc_term_notify_t(scr_stat *scp, int event);
346 #define SC_TE_NOTIFY_VTSWITCH_IN	0
347 #define SC_TE_NOTIFY_VTSWITCH_OUT	1
348 typedef int	sc_term_input_t(scr_stat *scp, int c, struct tty *tp);
349 
350 typedef struct sc_term_sw {
351 	LIST_ENTRY(sc_term_sw)	link;
352 	char 			*te_name;	/* name of the emulator */
353 	char 			*te_desc;	/* description */
354 	char 			*te_renderer;	/* matching renderer */
355 	size_t			te_size;	/* size of internal buffer */
356 	int			te_refcount;	/* reference counter */
357 	sc_term_init_t		*te_init;
358 	sc_term_term_t		*te_term;
359 	sc_term_puts_t		*te_puts;
360 	sc_term_ioctl_t		*te_ioctl;
361 	sc_term_reset_t		*te_reset;
362 	sc_term_default_attr_t	*te_default_attr;
363 	sc_term_clear_t		*te_clear;
364 	sc_term_notify_t	*te_notify;
365 	sc_term_input_t		*te_input;
366 } sc_term_sw_t;
367 
368 extern struct linker_set scterm_set;
369 
370 #define SCTERM_MODULE(name, sw)					\
371 	DATA_SET(scterm_set, sw);				\
372 	static int						\
373 	scterm_##name##_event(module_t mod, int type, void *data) \
374 	{							\
375 		switch (type) {					\
376 		case MOD_LOAD:					\
377 			return sc_term_add(&sw);		\
378 		case MOD_UNLOAD:				\
379 			if (sw.te_refcount > 0)			\
380 				return EBUSY;			\
381 			return sc_term_remove(&sw);		\
382 		default:					\
383 			break;					\
384 		}						\
385 		return 0;					\
386 	}							\
387 	static moduledata_t scterm_##name##_mod = {		\
388 		"scterm-" #name,				\
389 		scterm_##name##_event,				\
390 		NULL,						\
391 	};							\
392 	DECLARE_MODULE(scterm_##name, scterm_##name##_mod,	\
393 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
394 
395 /* renderer function table */
396 typedef void	vr_init_t(scr_stat *scp);
397 typedef void	vr_clear_t(scr_stat *scp, int c, int attr);
398 typedef void	vr_draw_border_t(scr_stat *scp, int color);
399 typedef void	vr_draw_t(scr_stat *scp, int from, int count, int flip);
400 typedef void	vr_set_cursor_t(scr_stat *scp, int base, int height, int blink);
401 typedef void	vr_draw_cursor_t(scr_stat *scp, int at, int blink,
402 				 int on, int flip);
403 typedef void	vr_blink_cursor_t(scr_stat *scp, int at, int flip);
404 typedef void	vr_set_mouse_t(scr_stat *scp);
405 typedef void	vr_draw_mouse_t(scr_stat *scp, int x, int y, int on);
406 
407 typedef struct sc_rndr_sw {
408 	vr_init_t		*init;
409 	vr_clear_t		*clear;
410 	vr_draw_border_t	*draw_border;
411 	vr_draw_t		*draw;
412 	vr_set_cursor_t		*set_cursor;
413 	vr_draw_cursor_t	*draw_cursor;
414 	vr_blink_cursor_t	*blink_cursor;
415 	vr_set_mouse_t		*set_mouse;
416 	vr_draw_mouse_t		*draw_mouse;
417 } sc_rndr_sw_t;
418 
419 typedef struct sc_renderer {
420 	char			*name;
421 	int			mode;
422 	sc_rndr_sw_t		*rndrsw;
423 	LIST_ENTRY(sc_renderer)	link;
424 } sc_renderer_t;
425 
426 extern struct linker_set scrndr_set;
427 
428 #define RENDERER(name, mode, sw, set)				\
429 	static struct sc_renderer scrndr_##name##_##mode = {	\
430 		#name, mode, &sw				\
431 	};							\
432 	DATA_SET(scrndr_set, scrndr_##name##_##mode);		\
433 	DATA_SET(set, scrndr_##name##_##mode)
434 
435 #define RENDERER_MODULE(name, set)				\
436 	SET_DECLARE(set, sc_renderer_t);			\
437 	static int						\
438 	scrndr_##name##_event(module_t mod, int type, void *data) \
439 	{							\
440 		sc_renderer_t **list;				\
441 		int error = 0;					\
442 		switch (type) {					\
443 		case MOD_LOAD:					\
444 			SET_FOREACH(list, set) {		\
445 				error = sc_render_add(*list);	\
446 				if (error)			\
447 					break;			\
448 			}					\
449 			break;					\
450 		case MOD_UNLOAD:				\
451 			SET_FOREACH(list, set) {		\
452 				error = sc_render_remove(*list);	\
453 				if (error)			\
454 					break;			\
455 			}					\
456 			break;					\
457 		default:					\
458 			break;					\
459 		}						\
460 		return error;					\
461 	}							\
462 	static moduledata_t scrndr_##name##_mod = {		\
463 		"scrndr-" #name,				\
464 		scrndr_##name##_event,				\
465 		NULL,						\
466 	};							\
467 	DECLARE_MODULE(scrndr_##name, scrndr_##name##_mod, 	\
468 		       SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
469 
470 typedef struct {
471 	int		cursor_start;
472 	int		cursor_end;
473 	int		shift_state;
474 	int		bell_pitch;
475 } bios_values_t;
476 
477 /* other macros */
478 #define ISTEXTSC(scp)	(!((scp)->status 				\
479 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE)))
480 #define ISGRAPHSC(scp)	(((scp)->status 				\
481 			  & (UNKNOWN_MODE | GRAPHICS_MODE)))
482 #define ISPIXELSC(scp)	(((scp)->status 				\
483 			  & (UNKNOWN_MODE | GRAPHICS_MODE | PIXEL_MODE))\
484 			  == PIXEL_MODE)
485 #define ISUNKNOWNSC(scp) ((scp)->status & UNKNOWN_MODE)
486 
487 #define ISMOUSEAVAIL(af) ((af) & V_ADP_FONT)
488 #define ISFONTAVAIL(af)	((af) & V_ADP_FONT)
489 #define ISPALAVAIL(af)	((af) & V_ADP_PALETTE)
490 
491 #define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
492 
493 #define kbd_read_char(kbd, wait)					\
494 		(*kbdsw[(kbd)->kb_index]->read_char)((kbd), (wait))
495 #define kbd_check_char(kbd)						\
496 		(*kbdsw[(kbd)->kb_index]->check_char)((kbd))
497 #define kbd_enable(kbd)							\
498 		(*kbdsw[(kbd)->kb_index]->enable)((kbd))
499 #define kbd_disable(kbd)						\
500 		(*kbdsw[(kbd)->kb_index]->disable)((kbd))
501 #define kbd_lock(kbd, lockf)						\
502 		(*kbdsw[(kbd)->kb_index]->lock)((kbd), (lockf))
503 #define kbd_ioctl(kbd, cmd, arg)					\
504 	    (((kbd) == NULL) ?						\
505 		ENODEV : (*kbdsw[(kbd)->kb_index]->ioctl)((kbd), (cmd), (arg)))
506 #define kbd_clear_state(kbd)						\
507 		(*kbdsw[(kbd)->kb_index]->clear_state)((kbd))
508 #define kbd_get_fkeystr(kbd, fkey, len)					\
509 		(*kbdsw[(kbd)->kb_index]->get_fkeystr)((kbd), (fkey), (len))
510 #define kbd_poll(kbd, on)						\
511 		(*kbdsw[(kbd)->kb_index]->poll)((kbd), (on))
512 
513 /* syscons.c */
514 extern int 	(*sc_user_ioctl)(dev_t dev, u_long cmd, caddr_t data,
515 				 int flag, struct thread *td);
516 
517 int		sc_probe_unit(int unit, int flags);
518 int		sc_attach_unit(int unit, int flags);
519 
520 int		set_mode(scr_stat *scp);
521 
522 void		sc_set_border(scr_stat *scp, int color);
523 void		sc_load_font(scr_stat *scp, int page, int size, u_char *font,
524 			     int base, int count);
525 void		sc_save_font(scr_stat *scp, int page, int size, u_char *font,
526 			     int base, int count);
527 void		sc_show_font(scr_stat *scp, int page);
528 
529 void		sc_touch_scrn_saver(void);
530 void		sc_puts(scr_stat *scp, u_char *buf, int len);
531 void		sc_draw_cursor_image(scr_stat *scp);
532 void		sc_remove_cursor_image(scr_stat *scp);
533 void		sc_set_cursor_image(scr_stat *scp);
534 int		sc_clean_up(scr_stat *scp);
535 int		sc_switch_scr(sc_softc_t *sc, u_int next_scr);
536 void		sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard);
537 int		sc_init_emulator(scr_stat *scp, char *name);
538 void		sc_paste(scr_stat *scp, u_char *p, int count);
539 void		sc_bell(scr_stat *scp, int pitch, int duration);
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_end(scr_stat *scp);
552 int		sc_hist_up_line(scr_stat *scp);
553 int		sc_hist_down_line(scr_stat *scp);
554 int		sc_hist_ioctl(struct tty *tp, u_long cmd, caddr_t data,
555 			      int flag, struct thread *td);
556 #endif /* SC_NO_HISTORY */
557 
558 /* scmouse.c */
559 #ifndef SC_NO_CUTPASTE
560 void		sc_alloc_cut_buffer(scr_stat *scp, int wait);
561 void		sc_draw_mouse_image(scr_stat *scp);
562 void		sc_remove_mouse_image(scr_stat *scp);
563 int		sc_inside_cutmark(scr_stat *scp, int pos);
564 void		sc_remove_cutmarking(scr_stat *scp);
565 void		sc_remove_all_cutmarkings(sc_softc_t *scp);
566 void		sc_remove_all_mouse(sc_softc_t *scp);
567 #else
568 #define		sc_draw_mouse_image(scp)
569 #define		sc_remove_mouse_image(scp)
570 #define		sc_inside_cutmark(scp, pos)	FALSE
571 #define		sc_remove_cutmarking(scp)
572 #define		sc_remove_all_cutmarkings(scp)
573 #define		sc_remove_all_mouse(scp)
574 #endif /* SC_NO_CUTPASTE */
575 #ifndef SC_NO_SYSMOUSE
576 void		sc_mouse_move(scr_stat *scp, int x, int y);
577 int		sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data,
578 			       int flag, struct thread *td);
579 #endif /* SC_NO_SYSMOUSE */
580 
581 /* scvidctl.c */
582 int		sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode,
583 				 int xsize, int ysize, int fontsize);
584 int		sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode);
585 int		sc_set_pixel_mode(scr_stat *scp, struct tty *tp,
586 				  int xsize, int ysize, int fontsize);
587 int		sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag,
588 			     struct thread *td);
589 
590 int		sc_render_add(sc_renderer_t *rndr);
591 int		sc_render_remove(sc_renderer_t *rndr);
592 sc_rndr_sw_t	*sc_render_match(scr_stat *scp, char *name, int mode);
593 
594 /* scvtb.c */
595 void		sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows,
596 			    void *buffer, int wait);
597 void		sc_vtb_destroy(sc_vtb_t *vtb);
598 size_t		sc_vtb_size(int cols, int rows);
599 void		sc_vtb_clear(sc_vtb_t *vtb, int c, int attr);
600 
601 int		sc_vtb_getc(sc_vtb_t *vtb, int at);
602 int		sc_vtb_geta(sc_vtb_t *vtb, int at);
603 void		sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a);
604 vm_offset_t	sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a);
605 vm_offset_t	sc_vtb_pointer(sc_vtb_t *vtb, int at);
606 int		sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset);
607 
608 #define		sc_vtb_tail(vtb)	((vtb)->vtb_tail)
609 #define		sc_vtb_rows(vtb)	((vtb)->vtb_rows)
610 #define		sc_vtb_cols(vtb)	((vtb)->vtb_cols)
611 
612 void		sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to,
613 			    int count);
614 void		sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2,
615 			      int count);
616 void		sc_vtb_seek(sc_vtb_t *vtb, int pos);
617 void		sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr);
618 void		sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count);
619 void		sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr);
620 void		sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr);
621 
622 /* sysmouse.c */
623 int		sysmouse_event(mouse_info_t *info);
624 
625 /* scterm.c */
626 void		sc_move_cursor(scr_stat *scp, int x, int y);
627 void		sc_clear_screen(scr_stat *scp);
628 int		sc_term_add(sc_term_sw_t *sw);
629 int		sc_term_remove(sc_term_sw_t *sw);
630 sc_term_sw_t	*sc_term_match(char *name);
631 sc_term_sw_t	*sc_term_match_by_number(int index);
632 
633 /* machine dependent functions */
634 int		sc_max_unit(void);
635 sc_softc_t	*sc_get_softc(int unit, int flags);
636 sc_softc_t	*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd);
637 int		sc_get_cons_priority(int *unit, int *flags);
638 void		sc_get_bios_values(bios_values_t *values);
639 int		sc_tone(int herz);
640 
641 #endif /* !_DEV_SYSCONS_SYSCONS_H_ */
642