xref: /dflybsd-src/sys/dev/misc/syscons/scvidctl.c (revision 17ea22213f86a5c5966c1e6bf8e95f022ebb92b9)
1 /*-
2  * Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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 as
13  *    the first lines of this file unmodified.
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  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  *
29  * $FreeBSD: src/sys/dev/syscons/scvidctl.c,v 1.19.2.2 2000/05/05 09:16:08 nyan Exp $
30  * $DragonFly: src/sys/dev/misc/syscons/scvidctl.c,v 1.7 2005/01/28 20:17:18 swildner Exp $
31  */
32 
33 #include "opt_syscons.h"
34 
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/conf.h>
38 #include <sys/signalvar.h>
39 #include <sys/tty.h>
40 #include <sys/kernel.h>
41 
42 #include <machine/console.h>
43 
44 #include <dev/video/fb/fbreg.h>
45 #include "syscons.h"
46 
47 SET_DECLARE(scrndr_set, const sc_renderer_t);
48 
49 int
50 sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize,
51 		 int fontsize)
52 {
53     video_info_t info;
54     u_char *font;
55     int prev_ysize;
56     int error;
57     int s;
58 
59     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, mode, &info))
60 	return ENODEV;
61 
62     /* adjust argument values */
63     if (fontsize <= 0)
64 	fontsize = info.vi_cheight;
65     if (fontsize < 14) {
66 	fontsize = 8;
67 #ifndef SC_NO_FONT_LOADING
68 	if (!(scp->sc->fonts_loaded & FONT_8))
69 	    return EINVAL;
70 	font = scp->sc->font_8;
71 #else
72 	font = NULL;
73 #endif
74     } else if (fontsize >= 16) {
75 	fontsize = 16;
76 #ifndef SC_NO_FONT_LOADING
77 	if (!(scp->sc->fonts_loaded & FONT_16))
78 	    return EINVAL;
79 	font = scp->sc->font_16;
80 #else
81 	font = NULL;
82 #endif
83     } else {
84 	fontsize = 14;
85 #ifndef SC_NO_FONT_LOADING
86 	if (!(scp->sc->fonts_loaded & FONT_14))
87 	    return EINVAL;
88 	font = scp->sc->font_14;
89 #else
90 	font = NULL;
91 #endif
92     }
93     if ((xsize <= 0) || (xsize > info.vi_width))
94 	xsize = info.vi_width;
95     if ((ysize <= 0) || (ysize > info.vi_height))
96 	ysize = info.vi_height;
97 
98     /* stop screen saver, etc */
99     s = spltty();
100     if ((error = sc_clean_up(scp))) {
101 	splx(s);
102 	return error;
103     }
104 
105     if (sc_render_match(scp, scp->sc->adp->va_name, 0) == NULL) {
106 	splx(s);
107 	return ENODEV;
108     }
109 
110     /* set up scp */
111 #ifndef SC_NO_HISTORY
112     if (scp->history != NULL)
113 	sc_hist_save(scp);
114 #endif
115     prev_ysize = scp->ysize;
116     /*
117      * This is a kludge to fend off scrn_update() while we
118      * muck around with scp. XXX
119      */
120     scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
121     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE | MOUSE_VISIBLE);
122     scp->mode = mode;
123     scp->xsize = xsize;
124     scp->ysize = ysize;
125     scp->xoff = 0;
126     scp->yoff = 0;
127     scp->xpixel = scp->xsize*8;
128     scp->ypixel = scp->ysize*fontsize;
129     scp->font = font;
130     scp->font_size = fontsize;
131 
132     /* allocate buffers */
133     sc_alloc_scr_buffer(scp, TRUE, TRUE);
134     sc_init_emulator(scp, NULL);
135 #ifndef SC_NO_CUTPASTE
136     sc_alloc_cut_buffer(scp, FALSE);
137 #endif
138 #ifndef SC_NO_HISTORY
139     sc_alloc_history_buffer(scp, 0, prev_ysize, FALSE);
140 #endif
141     splx(s);
142 
143     if (scp == scp->sc->cur_scp)
144 	set_mode(scp);
145     scp->status &= ~UNKNOWN_MODE;
146 
147     if (tp == NULL)
148 	return 0;
149     DPRINTF(5, ("ws_*size (%d,%d), size (%d,%d)\n",
150 	tp->t_winsize.ws_col, tp->t_winsize.ws_row, scp->xsize, scp->ysize));
151     if (tp->t_winsize.ws_col != scp->xsize
152 	|| tp->t_winsize.ws_row != scp->ysize) {
153 	tp->t_winsize.ws_col = scp->xsize;
154 	tp->t_winsize.ws_row = scp->ysize;
155 	pgsignal(tp->t_pgrp, SIGWINCH, 1);
156     }
157 
158     return 0;
159 }
160 
161 int
162 sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode)
163 {
164 #ifdef SC_NO_MODE_CHANGE
165     return ENODEV;
166 #else
167     video_info_t info;
168     int error;
169     int s;
170 
171     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, mode, &info))
172 	return ENODEV;
173 
174     /* stop screen saver, etc */
175     s = spltty();
176     if ((error = sc_clean_up(scp))) {
177 	splx(s);
178 	return error;
179     }
180 
181     if (sc_render_match(scp, scp->sc->adp->va_name, GRAPHICS_MODE) == NULL) {
182 	splx(s);
183 	return ENODEV;
184     }
185 
186     /* set up scp */
187     scp->status |= (UNKNOWN_MODE | GRAPHICS_MODE | MOUSE_HIDDEN);
188     scp->status &= ~(PIXEL_MODE | MOUSE_VISIBLE);
189     scp->mode = mode;
190     /*
191      * Don't change xsize and ysize; preserve the previous vty
192      * and history buffers.
193      */
194     scp->xoff = 0;
195     scp->yoff = 0;
196     scp->xpixel = info.vi_width;
197     scp->ypixel = info.vi_height;
198     scp->font = NULL;
199     scp->font_size = 0;
200 #ifndef SC_NO_SYSMOUSE
201     /* move the mouse cursor at the center of the screen */
202     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
203 #endif
204     sc_init_emulator(scp, NULL);
205     splx(s);
206 
207     if (scp == scp->sc->cur_scp)
208 	set_mode(scp);
209     /* clear_graphics();*/
210     scp->status &= ~UNKNOWN_MODE;
211 
212     if (tp == NULL)
213 	return 0;
214     if (tp->t_winsize.ws_xpixel != scp->xpixel
215 	|| tp->t_winsize.ws_ypixel != scp->ypixel) {
216 	tp->t_winsize.ws_xpixel = scp->xpixel;
217 	tp->t_winsize.ws_ypixel = scp->ypixel;
218 	pgsignal(tp->t_pgrp, SIGWINCH, 1);
219     }
220 
221     return 0;
222 #endif /* SC_NO_MODE_CHANGE */
223 }
224 
225 int
226 sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
227 		  int fontsize)
228 {
229 #ifndef SC_PIXEL_MODE
230     return ENODEV;
231 #else
232     video_info_t info;
233     u_char *font;
234     int prev_ysize;
235     int error;
236     int s;
237 
238     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info))
239 	return ENODEV;		/* this shouldn't happen */
240 
241     /* adjust argument values */
242     if (fontsize <= 0)
243 	fontsize = info.vi_cheight;
244     if (fontsize < 14) {
245 	fontsize = 8;
246 #ifndef SC_NO_FONT_LOADING
247 	if (!(scp->sc->fonts_loaded & FONT_8))
248 	    return EINVAL;
249 	font = scp->sc->font_8;
250 #else
251 	font = NULL;
252 #endif
253     } else if (fontsize >= 16) {
254 	fontsize = 16;
255 #ifndef SC_NO_FONT_LOADING
256 	if (!(scp->sc->fonts_loaded & FONT_16))
257 	    return EINVAL;
258 	font = scp->sc->font_16;
259 #else
260 	font = NULL;
261 #endif
262     } else {
263 	fontsize = 14;
264 #ifndef SC_NO_FONT_LOADING
265 	if (!(scp->sc->fonts_loaded & FONT_14))
266 	    return EINVAL;
267 	font = scp->sc->font_14;
268 #else
269 	font = NULL;
270 #endif
271     }
272     if (xsize <= 0)
273 	xsize = info.vi_width/8;
274     if (ysize <= 0)
275 	ysize = info.vi_height/fontsize;
276 
277     if ((info.vi_width < xsize*8) || (info.vi_height < ysize*fontsize))
278 	return EINVAL;
279 
280     /*
281      * We currently support the following graphic modes:
282      *
283      * - 4 bpp planar modes whose memory size does not exceed 64K
284      * - 15, 16, 24 and 32 bpp linear modes
285      */
286 
287     if (info.vi_mem_model == V_INFO_MM_PLANAR) {
288 	if (info.vi_planes != 4)
289 	    return ENODEV;
290 
291 	/*
292 	 * A memory size >64K requires bank switching to access the entire
293 	 * screen. XXX
294 	 */
295 
296 	if (info.vi_width * info.vi_height / 8 > info.vi_window_size)
297 	    return ENODEV;
298     } else if (info.vi_mem_model == V_INFO_MM_DIRECT) {
299 	if ((info.vi_depth != 15) && (info.vi_depth != 16) &&
300 	    (info.vi_depth != 24) && (info.vi_depth != 32))
301 	    return ENODEV;
302     } else
303 	return ENODEV;
304 
305     /* stop screen saver, etc */
306     s = spltty();
307     if ((error = sc_clean_up(scp))) {
308 	splx(s);
309 	return error;
310     }
311 
312     if (sc_render_match(scp, scp->sc->adp->va_name, PIXEL_MODE) == NULL) {
313 	splx(s);
314 	return ENODEV;
315     }
316 
317 #if 0
318     if (scp->tsw)
319 	(*scp->tsw->te_term)(scp, scp->ts);
320     scp->tsw = NULL;
321     scp->ts = NULL;
322 #endif
323 
324     /* set up scp */
325 #ifndef SC_NO_HISTORY
326     if (scp->history != NULL)
327 	sc_hist_save(scp);
328 #endif
329     prev_ysize = scp->ysize;
330     scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
331     scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
332     scp->xsize = xsize;
333     scp->ysize = ysize;
334     scp->xoff = (scp->xpixel/8 - xsize)/2;
335     scp->yoff = (scp->ypixel/fontsize - ysize)/2;
336     scp->font = font;
337     scp->font_size = fontsize;
338 
339     /* allocate buffers */
340     sc_alloc_scr_buffer(scp, TRUE, TRUE);
341     sc_init_emulator(scp, NULL);
342 #ifndef SC_NO_CUTPASTE
343     sc_alloc_cut_buffer(scp, FALSE);
344 #endif
345 #ifndef SC_NO_HISTORY
346     sc_alloc_history_buffer(scp, 0, prev_ysize, FALSE);
347 #endif
348     splx(s);
349 
350     if (scp == scp->sc->cur_scp) {
351 	sc_set_border(scp, scp->border);
352 	sc_set_cursor_image(scp);
353     }
354 
355     scp->status &= ~UNKNOWN_MODE;
356 
357     if (tp == NULL)
358 	return 0;
359     if (tp->t_winsize.ws_col != scp->xsize
360 	|| tp->t_winsize.ws_row != scp->ysize) {
361 	tp->t_winsize.ws_col = scp->xsize;
362 	tp->t_winsize.ws_row = scp->ysize;
363 	pgsignal(tp->t_pgrp, SIGWINCH, 1);
364     }
365 
366     return 0;
367 #endif /* SC_PIXEL_MODE */
368 }
369 
370 #define fb_ioctl(a, c, d)		\
371 	(((a) == NULL) ? ENODEV : 	\
372 			 (*vidsw[(a)->va_index]->ioctl)((a), (c), (caddr_t)(d)))
373 
374 int
375 sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag, struct thread *td)
376 {
377     scr_stat *scp;
378     video_adapter_t *adp;
379     video_info_t info;
380     int error;
381     int s;
382 
383     scp = SC_STAT(tp->t_dev);
384     if (scp == NULL)		/* tp == SC_MOUSE */
385 	return ENOIOCTL;
386     adp = scp->sc->adp;
387     if (adp == NULL)		/* shouldn't happen??? */
388 	return ENODEV;
389 
390     switch (cmd) {
391 
392     case CONS_CURRENTADP:	/* get current adapter index */
393     case FBIO_ADAPTER:
394 	return fb_ioctl(adp, FBIO_ADAPTER, data);
395 
396     case CONS_CURRENT:  	/* get current adapter type */
397     case FBIO_ADPTYPE:
398 	return fb_ioctl(adp, FBIO_ADPTYPE, data);
399 
400     case CONS_ADPINFO:		/* adapter information */
401     case FBIO_ADPINFO:
402 	if (((video_adapter_info_t *)data)->va_index >= 0) {
403 	    adp = vid_get_adapter(((video_adapter_info_t *)data)->va_index);
404 	    if (adp == NULL)
405 		return ENODEV;
406 	}
407 	return fb_ioctl(adp, FBIO_ADPINFO, data);
408 
409     case CONS_GET:      	/* get current video mode */
410     case FBIO_GETMODE:
411 	*(int *)data = scp->mode;
412 	return 0;
413 
414 #ifndef SC_NO_MODE_CHANGE
415     case FBIO_SETMODE:		/* set video mode */
416 	if (!(adp->va_flags & V_ADP_MODECHANGE))
417  	    return ENODEV;
418 	info.vi_mode = *(int *)data;
419 	error = fb_ioctl(adp, FBIO_MODEINFO, &info);
420 	if (error)
421 	    return error;
422 	if (info.vi_flags & V_INFO_GRAPHICS)
423 	    return sc_set_graphics_mode(scp, tp, *(int *)data);
424 	else
425 	    return sc_set_text_mode(scp, tp, *(int *)data, 0, 0, 0);
426 #endif /* SC_NO_MODE_CHANGE */
427 
428     case CONS_MODEINFO:		/* get mode information */
429     case FBIO_MODEINFO:
430 	return fb_ioctl(adp, FBIO_MODEINFO, data);
431 
432     case CONS_FINDMODE:		/* find a matching video mode */
433     case FBIO_FINDMODE:
434 	return fb_ioctl(adp, FBIO_FINDMODE, data);
435 
436     case CONS_SETWINORG:	/* set frame buffer window origin */
437     case FBIO_SETWINORG:
438 	if (scp != scp->sc->cur_scp)
439 	    return ENODEV;	/* XXX */
440 	return fb_ioctl(adp, FBIO_SETWINORG, data);
441 
442     case FBIO_GETWINORG:	/* get frame buffer window origin */
443 	if (scp != scp->sc->cur_scp)
444 	    return ENODEV;	/* XXX */
445 	return fb_ioctl(adp, FBIO_GETWINORG, data);
446 
447     case FBIO_GETDISPSTART:
448     case FBIO_SETDISPSTART:
449     case FBIO_GETLINEWIDTH:
450     case FBIO_SETLINEWIDTH:
451 	if (scp != scp->sc->cur_scp)
452 	    return ENODEV;	/* XXX */
453 	return fb_ioctl(adp, cmd, data);
454 
455     case FBIO_GETPALETTE:
456     case FBIO_SETPALETTE:
457     case FBIOPUTCMAP:
458     case FBIOGETCMAP:
459     case FBIOGTYPE:
460     case FBIOGATTR:
461     case FBIOSVIDEO:
462     case FBIOGVIDEO:
463     case FBIOSCURSOR:
464     case FBIOGCURSOR:
465     case FBIOSCURPOS:
466     case FBIOGCURPOS:
467     case FBIOGCURMAX:
468 	if (scp != scp->sc->cur_scp)
469 	    return ENODEV;	/* XXX */
470 	return fb_ioctl(adp, cmd, data);
471 
472 #ifndef SC_NO_MODE_CHANGE
473     /* generic text modes */
474     case SW_TEXT_80x25:	case SW_TEXT_80x30:
475     case SW_TEXT_80x43: case SW_TEXT_80x50:
476     case SW_TEXT_80x60:
477 	/* FALL THROUGH */
478 
479     /* VGA TEXT MODES */
480     case SW_VGA_C40x25:
481     case SW_VGA_C80x25: case SW_VGA_M80x25:
482     case SW_VGA_C80x30: case SW_VGA_M80x30:
483     case SW_VGA_C80x50: case SW_VGA_M80x50:
484     case SW_VGA_C80x60: case SW_VGA_M80x60:
485     case SW_VGA_C90x25: case SW_VGA_M90x25:
486     case SW_VGA_C90x30: case SW_VGA_M90x30:
487     case SW_VGA_C90x43: case SW_VGA_M90x43:
488     case SW_VGA_C90x50: case SW_VGA_M90x50:
489     case SW_VGA_C90x60: case SW_VGA_M90x60:
490     case SW_B40x25:     case SW_C40x25:
491     case SW_B80x25:     case SW_C80x25:
492     case SW_ENH_B40x25: case SW_ENH_C40x25:
493     case SW_ENH_B80x25: case SW_ENH_C80x25:
494     case SW_ENH_B80x43: case SW_ENH_C80x43:
495     case SW_EGAMONO80x25:
496 
497 #ifdef PC98
498     /* PC98 TEXT MODES */
499     case SW_PC98_80x25:
500     case SW_PC98_80x30:
501 #endif
502 	if (!(adp->va_flags & V_ADP_MODECHANGE))
503  	    return ENODEV;
504 	return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0);
505 
506     /* GRAPHICS MODES */
507     case SW_BG320:     case SW_BG640:
508     case SW_CG320:     case SW_CG320_D:   case SW_CG640_E:
509     case SW_CG640x350: case SW_ENH_CG640:
510     case SW_BG640x480: case SW_CG640x480: case SW_VGA_CG320:
511     case SW_VGA_MODEX:
512 #ifdef PC98
513     /* PC98 GRAPHICS MODES */
514     case SW_PC98_EGC640x400:	case SW_PC98_PEGC640x400:
515     case SW_PC98_PEGC640x480:
516 #endif
517 	if (!(adp->va_flags & V_ADP_MODECHANGE))
518 	    return ENODEV;
519 	return sc_set_graphics_mode(scp, tp, cmd & 0xff);
520 #endif /* SC_NO_MODE_CHANGE */
521 
522     case KDSETMODE:     	/* set current mode of this (virtual) console */
523 	switch (*(int *)data) {
524 	case KD_TEXT:   	/* switch to TEXT (known) mode */
525 	    /*
526 	     * If scp->mode is of graphics modes, we don't know which
527 	     * text mode to switch back to...
528 	     */
529 	    if (scp->status & GRAPHICS_MODE)
530 		return EINVAL;
531 	    /* restore fonts & palette ! */
532 #if 0
533 #ifndef SC_NO_FONT_LOADING
534 	    if (ISFONTAVAIL(adp->va_flags)
535 		&& !(scp->status & (GRAPHICS_MODE | PIXEL_MODE)))
536 		/*
537 		 * FONT KLUDGE
538 		 * Don't load fonts for now... XXX
539 		 */
540 		if (scp->sc->fonts_loaded & FONT_8)
541 		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
542 		if (scp->sc->fonts_loaded & FONT_14)
543 		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
544 		if (scp->sc->fonts_loaded & FONT_16)
545 		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
546 	    }
547 #endif /* SC_NO_FONT_LOADING */
548 #endif
549 
550 #ifndef SC_NO_PALETTE_LOADING
551 	    load_palette(adp, scp->sc->palette);
552 #endif
553 
554 #ifndef PC98
555 	    /* move hardware cursor out of the way */
556 	    (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
557 #endif
558 
559 	    /* FALL THROUGH */
560 
561 	case KD_TEXT1:  	/* switch to TEXT (known) mode */
562 	    /*
563 	     * If scp->mode is of graphics modes, we don't know which
564 	     * text/pixel mode to switch back to...
565 	     */
566 	    if (scp->status & GRAPHICS_MODE)
567 		return EINVAL;
568 	    s = spltty();
569 	    if ((error = sc_clean_up(scp))) {
570 		splx(s);
571 		return error;
572 	    }
573 #ifndef PC98
574 	    scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
575 	    splx(s);
576 	    /* no restore fonts & palette */
577 	    if (scp == scp->sc->cur_scp)
578 		set_mode(scp);
579 	    sc_clear_screen(scp);
580 	    scp->status &= ~UNKNOWN_MODE;
581 #else /* PC98 */
582 	    scp->status &= ~UNKNOWN_MODE;
583 	    /* no restore fonts & palette */
584 	    if (scp == scp->sc->cur_scp)
585 		set_mode(scp);
586 	    sc_clear_screen(scp);
587 	    splx(s);
588 #endif /* PC98 */
589 	    return 0;
590 
591 #ifdef SC_PIXEL_MODE
592 	case KD_PIXEL:		/* pixel (raster) display */
593 	    if (!(scp->status & (GRAPHICS_MODE | PIXEL_MODE)))
594 		return EINVAL;
595 	    if (scp->status & GRAPHICS_MODE)
596 		return sc_set_pixel_mode(scp, tp, scp->xsize, scp->ysize,
597 					 scp->font_size);
598 	    s = spltty();
599 	    if ((error = sc_clean_up(scp))) {
600 		splx(s);
601 		return error;
602 	    }
603 	    scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
604 	    splx(s);
605 	    if (scp == scp->sc->cur_scp) {
606 		set_mode(scp);
607 #ifndef SC_NO_PALETTE_LOADING
608 		load_palette(adp, scp->sc->palette);
609 #endif
610 	    }
611 	    sc_clear_screen(scp);
612 	    scp->status &= ~UNKNOWN_MODE;
613 	    return 0;
614 #endif /* SC_PIXEL_MODE */
615 
616 	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
617 	    s = spltty();
618 	    if ((error = sc_clean_up(scp))) {
619 		splx(s);
620 		return error;
621 	    }
622 	    scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
623 	    splx(s);
624 #ifdef PC98
625 	    if (scp == scp->sc->cur_scp)
626 		set_mode(scp);
627 #endif
628 	    return 0;
629 
630 	default:
631 	    return EINVAL;
632 	}
633 	/* NOT REACHED */
634 
635 #ifdef SC_PIXEL_MODE
636     case KDRASTER:		/* set pixel (raster) display mode */
637 	if (ISUNKNOWNSC(scp) || ISTEXTSC(scp))
638 	    return ENODEV;
639 	return sc_set_pixel_mode(scp, tp, ((int *)data)[0], ((int *)data)[1],
640 				 ((int *)data)[2]);
641 #endif /* SC_PIXEL_MODE */
642 
643     case KDGETMODE:     	/* get current mode of this (virtual) console */
644 	/*
645 	 * From the user program's point of view, KD_PIXEL is the same
646 	 * as KD_TEXT...
647 	 */
648 	*data = ISGRAPHSC(scp) ? KD_GRAPHICS : KD_TEXT;
649 	return 0;
650 
651     case KDSBORDER:     	/* set border color of this (virtual) console */
652 	scp->border = *data;
653 	if (scp == scp->sc->cur_scp)
654 	    sc_set_border(scp, scp->border);
655 	return 0;
656     }
657 
658     return ENOIOCTL;
659 }
660 
661 static LIST_HEAD(, sc_renderer) sc_rndr_list =
662 	LIST_HEAD_INITIALIZER(sc_rndr_list);
663 
664 int
665 sc_render_add(sc_renderer_t *rndr)
666 {
667 	LIST_INSERT_HEAD(&sc_rndr_list, rndr, link);
668 	return 0;
669 }
670 
671 int
672 sc_render_remove(sc_renderer_t *rndr)
673 {
674 	/*
675 	LIST_REMOVE(rndr, link);
676 	*/
677 	return EBUSY;	/* XXX */
678 }
679 
680 sc_rndr_sw_t
681 *sc_render_match(scr_stat *scp, char *name, int mode)
682 {
683 	const sc_renderer_t **list;
684 	const sc_renderer_t *p;
685 
686 	if (!LIST_EMPTY(&sc_rndr_list)) {
687 		LIST_FOREACH(p, &sc_rndr_list, link) {
688 			if ((strcmp(p->name, name) == 0)
689 				&& (mode == p->mode)) {
690 				scp->status &=
691 				    ~(VR_CURSOR_ON | VR_CURSOR_BLINK);
692 				return p->rndrsw;
693 			}
694 		}
695 	} else {
696 		SET_FOREACH(list, scrndr_set) {
697 			p = *list;
698 			if ((strcmp(p->name, name) == 0)
699 				&& (mode == p->mode)) {
700 				scp->status &=
701 				    ~(VR_CURSOR_ON | VR_CURSOR_BLINK);
702 				return p->rndrsw;
703 			}
704 		}
705 	}
706 
707 	return NULL;
708 }
709