xref: /dragonfly/sys/dev/misc/syscons/scvidctl.c (revision 36a3d1d6) 
1 /*-
2  * (MPSAFE)
3  *
4  * Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The DragonFly Project
8  * by Sascha Wildner <saw@online.de>
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer as
15  *    the first lines of this file unmodified.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
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/scvidctl.c,v 1.19.2.2 2000/05/05 09:16:08 nyan Exp $
32  * $DragonFly: src/sys/dev/misc/syscons/scvidctl.c,v 1.16 2007/08/19 11:39:11 swildner Exp $
33  */
34 
35 #include "opt_syscons.h"
36 
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/conf.h>
40 #include <sys/signalvar.h>
41 #include <sys/tty.h>
42 #include <sys/kernel.h>
43 #include <sys/thread2.h>
44 
45 #include <machine/console.h>
46 
47 #include <dev/video/fb/fbreg.h>
48 #include "syscons.h"
49 
50 SET_DECLARE(scrndr_set, const sc_renderer_t);
51 
52 int
53 sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize,
54 		 int fontsize)
55 {
56     video_info_t info;
57     u_char *font;
58     int prev_ysize;
59     int new_ysize;
60     int error;
61 
62     lwkt_gettoken(&tty_token);
63     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, mode, &info)) {
64 	lwkt_reltoken(&tty_token);
65 	return ENODEV;
66     }
67     lwkt_reltoken(&tty_token);
68 
69     /* adjust argument values */
70     if (fontsize <= 0)
71 	fontsize = info.vi_cheight;
72     if (fontsize < 14) {
73 	fontsize = 8;
74 #ifndef SC_NO_FONT_LOADING
75 	if (!(scp->sc->fonts_loaded & FONT_8))
76 	    return EINVAL;
77 	font = scp->sc->font_8;
78 #else
79 	font = NULL;
80 #endif
81     } else if (fontsize >= 16) {
82 	fontsize = 16;
83 #ifndef SC_NO_FONT_LOADING
84 	if (!(scp->sc->fonts_loaded & FONT_16))
85 	    return EINVAL;
86 	font = scp->sc->font_16;
87 #else
88 	font = NULL;
89 #endif
90     } else {
91 	fontsize = 14;
92 #ifndef SC_NO_FONT_LOADING
93 	if (!(scp->sc->fonts_loaded & FONT_14))
94 	    return EINVAL;
95 	font = scp->sc->font_14;
96 #else
97 	font = NULL;
98 #endif
99     }
100     if ((xsize <= 0) || (xsize > info.vi_width))
101 	xsize = info.vi_width;
102     if ((ysize <= 0) || (ysize > info.vi_height))
103 	ysize = info.vi_height;
104 
105     /* stop screen saver, etc */
106     crit_enter();
107     if ((error = sc_clean_up(scp))) {
108 	crit_exit();
109 	return error;
110     }
111 
112     if (sc_render_match(scp, scp->sc->adp->va_name, V_INFO_MM_TEXT) == NULL) {
113 	crit_exit();
114 	return ENODEV;
115     }
116 
117     /* set up scp */
118     new_ysize = 0;
119 #ifndef SC_NO_HISTORY
120     if (scp->history != NULL) {
121 	sc_hist_save(scp);
122 	new_ysize = sc_vtb_rows(scp->history);
123     }
124 #endif
125     prev_ysize = scp->ysize;
126     /*
127      * This is a kludge to fend off scrn_update() while we
128      * muck around with scp. XXX
129      */
130     scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
131     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE | MOUSE_VISIBLE);
132     scp->mode = mode;
133     scp->model = V_INFO_MM_TEXT;
134     scp->xsize = xsize;
135     scp->ysize = ysize;
136     scp->xoff = 0;
137     scp->yoff = 0;
138     scp->xpixel = scp->xsize*8;
139     scp->ypixel = scp->ysize*fontsize;
140     scp->font = font;
141     scp->font_size = fontsize;
142 
143     /* allocate buffers */
144     sc_alloc_scr_buffer(scp, TRUE, TRUE);
145     sc_init_emulator(scp, NULL);
146 #ifndef SC_NO_CUTPASTE
147     sc_alloc_cut_buffer(scp, FALSE);
148 #endif
149 #ifndef SC_NO_HISTORY
150     sc_alloc_history_buffer(scp, new_ysize, prev_ysize, FALSE);
151 #endif
152     crit_exit();
153 
154     if (scp == scp->sc->cur_scp)
155 	set_mode(scp);
156     scp->status &= ~UNKNOWN_MODE;
157 
158     if (tp == NULL)
159 	return 0;
160     DPRINTF(5, ("ws_*size (%d,%d), size (%d,%d)\n",
161 	tp->t_winsize.ws_col, tp->t_winsize.ws_row, scp->xsize, scp->ysize));
162     if (tp->t_winsize.ws_col != scp->xsize
163 	|| tp->t_winsize.ws_row != scp->ysize) {
164 	tp->t_winsize.ws_col = scp->xsize;
165 	tp->t_winsize.ws_row = scp->ysize;
166 	pgsignal(tp->t_pgrp, SIGWINCH, 1);
167     }
168 
169     return 0;
170 }
171 
172 int
173 sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode)
174 {
175 #ifdef SC_NO_MODE_CHANGE
176     return ENODEV;
177 #else
178     video_info_t info;
179     int error;
180 
181     lwkt_gettoken(&tty_token);
182     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, mode, &info)) {
183         lwkt_reltoken(&tty_token);
184 	return ENODEV;
185     }
186     lwkt_reltoken(&tty_token);
187 
188     /* stop screen saver, etc */
189     crit_enter();
190     if ((error = sc_clean_up(scp))) {
191 	crit_exit();
192 	return error;
193     }
194 
195     if (sc_render_match(scp, scp->sc->adp->va_name, V_INFO_MM_OTHER) == NULL) {
196 	crit_exit();
197 	return ENODEV;
198     }
199 
200     /* set up scp */
201     scp->status |= (UNKNOWN_MODE | GRAPHICS_MODE | MOUSE_HIDDEN);
202     scp->status &= ~(PIXEL_MODE | MOUSE_VISIBLE);
203     scp->mode = mode;
204     scp->model = V_INFO_MM_OTHER;
205     /*
206      * Don't change xsize and ysize; preserve the previous vty
207      * and history buffers.
208      */
209     scp->xoff = 0;
210     scp->yoff = 0;
211     scp->xpixel = info.vi_width;
212     scp->ypixel = info.vi_height;
213     scp->font = NULL;
214     scp->font_size = 0;
215 #ifndef SC_NO_SYSMOUSE
216     /* move the mouse cursor at the center of the screen */
217     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
218 #endif
219     sc_init_emulator(scp, NULL);
220     crit_exit();
221 
222     if (scp == scp->sc->cur_scp)
223 	set_mode(scp);
224     /* clear_graphics();*/
225     refresh_ega_palette(scp);
226     scp->status &= ~UNKNOWN_MODE;
227 
228     if (tp == NULL)
229 	return 0;
230     if (tp->t_winsize.ws_xpixel != scp->xpixel
231 	|| tp->t_winsize.ws_ypixel != scp->ypixel) {
232 	tp->t_winsize.ws_xpixel = scp->xpixel;
233 	tp->t_winsize.ws_ypixel = scp->ypixel;
234 	pgsignal(tp->t_pgrp, SIGWINCH, 1);
235     }
236 
237     return 0;
238 #endif /* SC_NO_MODE_CHANGE */
239 }
240 
241 int
242 sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
243 		  int fontsize)
244 {
245 #ifndef SC_PIXEL_MODE
246     return ENODEV;
247 #else
248     video_info_t info;
249     u_char *font;
250     int prev_ysize;
251     int new_ysize;
252     int error;
253 
254     lwkt_gettoken(&tty_token);
255     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info)) {
256         lwkt_reltoken(&tty_token);
257 	return ENODEV;		/* this shouldn't happen */
258     }
259     lwkt_reltoken(&tty_token);
260 
261     /* adjust argument values */
262     if (fontsize <= 0)
263 	fontsize = info.vi_cheight;
264     if (fontsize < 14) {
265 	fontsize = 8;
266 #ifndef SC_NO_FONT_LOADING
267 	if (!(scp->sc->fonts_loaded & FONT_8))
268 	    return EINVAL;
269 	font = scp->sc->font_8;
270 #else
271 	font = NULL;
272 #endif
273     } else if (fontsize >= 16) {
274 	fontsize = 16;
275 #ifndef SC_NO_FONT_LOADING
276 	if (!(scp->sc->fonts_loaded & FONT_16))
277 	    return EINVAL;
278 	font = scp->sc->font_16;
279 #else
280 	font = NULL;
281 #endif
282     } else {
283 	fontsize = 14;
284 #ifndef SC_NO_FONT_LOADING
285 	if (!(scp->sc->fonts_loaded & FONT_14))
286 	    return EINVAL;
287 	font = scp->sc->font_14;
288 #else
289 	font = NULL;
290 #endif
291     }
292     if (xsize <= 0)
293 	xsize = info.vi_width/8;
294     if (ysize <= 0)
295 	ysize = info.vi_height/fontsize;
296 
297     if ((info.vi_width < xsize*8) || (info.vi_height < ysize*fontsize))
298 	return EINVAL;
299 
300     /*
301      * We currently support the following graphic modes:
302      *
303      * - 4 bpp planar modes whose memory size does not exceed 64K
304      * - 8 bbp packed pixel modes
305      * - 15, 16, 24 and 32 bpp direct modes with linear frame buffer
306      */
307 
308     if (info.vi_mem_model == V_INFO_MM_PLANAR) {
309 	if (info.vi_planes != 4)
310 	    return ENODEV;
311 
312 	/*
313 	 * A memory size >64K requires bank switching to access the entire
314 	 * screen. XXX
315 	 */
316 
317 	if (info.vi_width * info.vi_height / 8 > info.vi_window_size)
318 	    return ENODEV;
319     } else if (info.vi_mem_model == V_INFO_MM_PACKED) {
320 	if (info.vi_depth != 8)
321 	    return ENODEV;
322     } else if (info.vi_mem_model == V_INFO_MM_DIRECT) {
323 	if (!(info.vi_flags & V_INFO_LINEAR) &&
324 	    (info.vi_depth != 15) && (info.vi_depth != 16) &&
325 	    (info.vi_depth != 24) && (info.vi_depth != 32))
326 	    return ENODEV;
327     } else
328 	return ENODEV;
329 
330     /* stop screen saver, etc */
331     crit_enter();
332     if ((error = sc_clean_up(scp))) {
333 	crit_exit();
334 	return error;
335     }
336 
337     if (sc_render_match(scp, scp->sc->adp->va_name, info.vi_mem_model) == NULL) {
338 	crit_exit();
339 	return ENODEV;
340     }
341 
342 #if 0
343     if (scp->tsw)
344 	(*scp->tsw->te_term)(scp, scp->ts);
345     scp->tsw = NULL;
346     scp->ts = NULL;
347 #endif
348 
349     /* set up scp */
350     new_ysize = 0;
351 #ifndef SC_NO_HISTORY
352     if (scp->history != NULL) {
353 	sc_hist_save(scp);
354 	new_ysize = sc_vtb_rows(scp->history);
355     }
356 #endif
357     prev_ysize = scp->ysize;
358     scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
359     scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
360     scp->model = info.vi_mem_model;
361     scp->xsize = xsize;
362     scp->ysize = ysize;
363     scp->xoff = (scp->xpixel/8 - xsize)/2;
364     scp->yoff = (scp->ypixel/fontsize - ysize)/2;
365     scp->font = font;
366     scp->font_size = fontsize;
367 
368     /* allocate buffers */
369     sc_alloc_scr_buffer(scp, TRUE, TRUE);
370     sc_init_emulator(scp, NULL);
371 #ifndef SC_NO_CUTPASTE
372     sc_alloc_cut_buffer(scp, FALSE);
373 #endif
374 #ifndef SC_NO_HISTORY
375     sc_alloc_history_buffer(scp, new_ysize, prev_ysize, FALSE);
376 #endif
377     crit_exit();
378 
379     if (scp == scp->sc->cur_scp) {
380 	sc_set_border(scp, scp->border);
381 	sc_set_cursor_image(scp);
382     }
383 
384     scp->status &= ~UNKNOWN_MODE;
385 
386     if (tp == NULL)
387 	return 0;
388     if (tp->t_winsize.ws_col != scp->xsize
389 	|| tp->t_winsize.ws_row != scp->ysize) {
390 	tp->t_winsize.ws_col = scp->xsize;
391 	tp->t_winsize.ws_row = scp->ysize;
392 	pgsignal(tp->t_pgrp, SIGWINCH, 1);
393     }
394 
395     return 0;
396 #endif /* SC_PIXEL_MODE */
397 }
398 
399 #define fb_ioctl(a, c, d)		\
400 	(((a) == NULL) ? ENODEV : 	\
401 			 (*vidsw[(a)->va_index]->ioctl)((a), (c), (caddr_t)(d)))
402 
403 int
404 sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag)
405 {
406     scr_stat *scp;
407     video_adapter_t *adp;
408     video_info_t info;
409     int error, ret;
410 
411 	KKASSERT(tp->t_dev);
412 
413     scp = SC_STAT(tp->t_dev);
414     if (scp == NULL)		/* tp == SC_MOUSE */
415 		return ENOIOCTL;
416     adp = scp->sc->adp;
417     if (adp == NULL)		/* shouldn't happen??? */
418 		return ENODEV;
419 
420     lwkt_gettoken(&tty_token);
421     switch (cmd) {
422 
423     case CONS_CURRENTADP:	/* get current adapter index */
424     case FBIO_ADAPTER:
425 	ret = fb_ioctl(adp, FBIO_ADAPTER, data);
426 	lwkt_reltoken(&tty_token);
427 	return ret;
428 
429     case CONS_CURRENT:  	/* get current adapter type */
430     case FBIO_ADPTYPE:
431 	ret = fb_ioctl(adp, FBIO_ADPTYPE, data);
432 	lwkt_reltoken(&tty_token);
433 	return ret;
434 
435     case CONS_ADPINFO:		/* adapter information */
436     case FBIO_ADPINFO:
437 	if (((video_adapter_info_t *)data)->va_index >= 0) {
438 	    adp = vid_get_adapter(((video_adapter_info_t *)data)->va_index);
439 	    if (adp == NULL) {
440 		lwkt_reltoken(&tty_token);
441 		return ENODEV;
442 	    }
443 	}
444 	ret = fb_ioctl(adp, FBIO_ADPINFO, data);
445 	lwkt_reltoken(&tty_token);
446 	return ret;
447 
448     case CONS_GET:      	/* get current video mode */
449     case FBIO_GETMODE:
450 	*(int *)data = scp->mode;
451 	lwkt_reltoken(&tty_token);
452 	return 0;
453 
454 #ifndef SC_NO_MODE_CHANGE
455     case CONS_SET:
456     case FBIO_SETMODE:		/* set video mode */
457 	if (!(adp->va_flags & V_ADP_MODECHANGE)) {
458 	    lwkt_reltoken(&tty_token);
459  	    return ENODEV;
460 	}
461 	info.vi_mode = *(int *)data;
462 	error = fb_ioctl(adp, FBIO_MODEINFO, &info);
463 	if (error) {
464 	    lwkt_reltoken(&tty_token);
465 	    return error;
466 	}
467 	if (info.vi_flags & V_INFO_GRAPHICS) {
468 	    lwkt_reltoken(&tty_token);
469 	    return sc_set_graphics_mode(scp, tp, *(int *)data);
470 	} else {
471 	    lwkt_reltoken(&tty_token);
472 	    return sc_set_text_mode(scp, tp, *(int *)data, 0, 0, 0);
473 	}
474 #endif /* SC_NO_MODE_CHANGE */
475 
476     case CONS_MODEINFO:		/* get mode information */
477     case FBIO_MODEINFO:
478 	ret = fb_ioctl(adp, FBIO_MODEINFO, data);
479 	lwkt_reltoken(&tty_token);
480 	return ret;
481 
482     case CONS_FINDMODE:		/* find a matching video mode */
483     case FBIO_FINDMODE:
484 	ret = fb_ioctl(adp, FBIO_FINDMODE, data);
485 	lwkt_reltoken(&tty_token);
486 	return ret;
487 
488     case CONS_SETWINORG:	/* set frame buffer window origin */
489     case FBIO_SETWINORG:
490 	if (scp != scp->sc->cur_scp) {
491 	    lwkt_reltoken(&tty_token);
492 	    return ENODEV;	/* XXX */
493 	}
494 	ret = fb_ioctl(adp, FBIO_SETWINORG, data);
495 	lwkt_reltoken(&tty_token);
496 	return ret;
497 
498     case FBIO_GETWINORG:	/* get frame buffer window origin */
499 	if (scp != scp->sc->cur_scp) {
500 	    lwkt_reltoken(&tty_token);
501 	    return ENODEV;	/* XXX */
502 	}
503 	ret = fb_ioctl(adp, FBIO_GETWINORG, data);
504 	lwkt_reltoken(&tty_token);
505 	return ret;
506 
507     case FBIO_GETDISPSTART:
508     case FBIO_SETDISPSTART:
509     case FBIO_GETLINEWIDTH:
510     case FBIO_SETLINEWIDTH:
511 	if (scp != scp->sc->cur_scp) {
512 	    lwkt_reltoken(&tty_token);
513 	    return ENODEV;	/* XXX */
514 	}
515 	ret = fb_ioctl(adp, cmd, data);
516 	lwkt_reltoken(&tty_token);
517 	return ret;
518 
519     case FBIO_GETPALETTE:
520     case FBIO_SETPALETTE:
521     case FBIOPUTCMAP:
522     case FBIOGETCMAP:
523     case FBIOGTYPE:
524     case FBIOGATTR:
525     case FBIOSVIDEO:
526     case FBIOGVIDEO:
527     case FBIOSCURSOR:
528     case FBIOGCURSOR:
529     case FBIOSCURPOS:
530     case FBIOGCURPOS:
531     case FBIOGCURMAX:
532 	if (scp != scp->sc->cur_scp) {
533 	    lwkt_reltoken(&tty_token);
534 	    return ENODEV;	/* XXX */
535 	}
536 	ret = fb_ioctl(adp, cmd, data);
537 	lwkt_reltoken(&tty_token);
538 	return ret;
539 
540     case KDSETMODE:     	/* set current mode of this (virtual) console */
541 	switch (*(int *)data) {
542 	case KD_TEXT:   	/* switch to TEXT (known) mode */
543 	    /*
544 	     * If scp->mode is of graphics modes, we don't know which
545 	     * text mode to switch back to...
546 	     */
547 	    if (scp->status & GRAPHICS_MODE) {
548 	        lwkt_reltoken(&tty_token);
549 		return EINVAL;
550 	    }
551 	    /* restore fonts & palette ! */
552 #if 0
553 #ifndef SC_NO_FONT_LOADING
554 	    if (ISFONTAVAIL(adp->va_flags)
555 		&& !(scp->status & (GRAPHICS_MODE | PIXEL_MODE)))
556 		/*
557 		 * FONT KLUDGE
558 		 * Don't load fonts for now... XXX
559 		 */
560 		if (scp->sc->fonts_loaded & FONT_8)
561 		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
562 		if (scp->sc->fonts_loaded & FONT_14)
563 		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
564 		if (scp->sc->fonts_loaded & FONT_16)
565 		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
566 	    }
567 #endif /* SC_NO_FONT_LOADING */
568 #endif
569 
570 #ifndef SC_NO_PALETTE_LOADING
571 	    load_palette(adp, scp->sc->palette);
572 #endif
573 
574 	    /* move hardware cursor out of the way */
575 	    (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
576 	    /* FALL THROUGH */
577 
578 	case KD_TEXT1:  	/* switch to TEXT (known) mode */
579 	    /*
580 	     * If scp->mode is of graphics modes, we don't know which
581 	     * text/pixel mode to switch back to...
582 	     */
583 	    if (scp->status & GRAPHICS_MODE) {
584 	        lwkt_reltoken(&tty_token);
585 		return EINVAL;
586 	    }
587 	    crit_enter();
588 	    if ((error = sc_clean_up(scp))) {
589 		crit_exit();
590 		lwkt_reltoken(&tty_token);
591 		return error;
592 	    }
593 	    scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
594 	    crit_exit();
595 	    /* no restore fonts & palette */
596 	    if (scp == scp->sc->cur_scp)
597 		set_mode(scp);
598 	    sc_clear_screen(scp);
599 	    scp->status &= ~UNKNOWN_MODE;
600 	    lwkt_reltoken(&tty_token);
601 	    return 0;
602 
603 #ifdef SC_PIXEL_MODE
604 	case KD_PIXEL:		/* pixel (raster) display */
605 	    if (!(scp->status & (GRAPHICS_MODE | PIXEL_MODE))) {
606 	        lwkt_reltoken(&tty_token);
607 		return EINVAL;
608             }
609 	    if (scp->status & GRAPHICS_MODE) {
610 	        lwkt_reltoken(&tty_token);
611 		return sc_set_pixel_mode(scp, tp, scp->xsize, scp->ysize,
612 					 scp->font_size);
613 	    }
614 	    crit_enter();
615 	    if ((error = sc_clean_up(scp))) {
616 		crit_exit();
617 		lwkt_reltoken(&tty_token);
618 		return error;
619 	    }
620 	    scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
621 	    crit_exit();
622 	    if (scp == scp->sc->cur_scp) {
623 		set_mode(scp);
624 #ifndef SC_NO_PALETTE_LOADING
625 		load_palette(adp, scp->sc->palette);
626 #endif
627 	    }
628 	    sc_clear_screen(scp);
629 	    scp->status &= ~UNKNOWN_MODE;
630 	    lwkt_reltoken(&tty_token);
631 	    return 0;
632 #endif /* SC_PIXEL_MODE */
633 
634 	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
635 	    crit_enter();
636 	    if ((error = sc_clean_up(scp))) {
637 		crit_exit();
638 		lwkt_reltoken(&tty_token);
639 		return error;
640 	    }
641 	    scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
642 	    crit_exit();
643 	    lwkt_reltoken(&tty_token);
644 	    return 0;
645 
646 	default:
647 	    lwkt_reltoken(&tty_token);
648 	    return EINVAL;
649 	}
650 	/* NOT REACHED */
651 
652 #ifdef SC_PIXEL_MODE
653     case KDRASTER:		/* set pixel (raster) display mode */
654 	if (ISUNKNOWNSC(scp) || ISTEXTSC(scp)) {
655 	    lwkt_reltoken(&tty_token);
656 	    return ENODEV;
657 	}
658 	lwkt_reltoken(&tty_token);
659 	return sc_set_pixel_mode(scp, tp, ((int *)data)[0], ((int *)data)[1],
660 				 ((int *)data)[2]);
661 #endif /* SC_PIXEL_MODE */
662 
663     case KDGETMODE:     	/* get current mode of this (virtual) console */
664 	/*
665 	 * From the user program's point of view, KD_PIXEL is the same
666 	 * as KD_TEXT...
667 	 */
668 	*data = ISGRAPHSC(scp) ? KD_GRAPHICS : KD_TEXT;
669 	lwkt_reltoken(&tty_token);
670 	return 0;
671 
672     case KDSBORDER:     	/* set border color of this (virtual) console */
673 	scp->border = *data;
674 	if (scp == scp->sc->cur_scp)
675 	    sc_set_border(scp, scp->border);
676 	lwkt_reltoken(&tty_token);
677 	return 0;
678     }
679 
680     lwkt_reltoken(&tty_token);
681     return ENOIOCTL;
682 }
683 
684 static LIST_HEAD(, sc_renderer) sc_rndr_list =
685 	LIST_HEAD_INITIALIZER(sc_rndr_list);
686 
687 int
688 sc_render_add(sc_renderer_t *rndr)
689 {
690 	LIST_INSERT_HEAD(&sc_rndr_list, rndr, link);
691 	return 0;
692 }
693 
694 int
695 sc_render_remove(sc_renderer_t *rndr)
696 {
697 	/*
698 	LIST_REMOVE(rndr, link);
699 	*/
700 	return EBUSY;	/* XXX */
701 }
702 
703 sc_rndr_sw_t *
704 sc_render_match(scr_stat *scp, char *name, int model)
705 {
706 	const sc_renderer_t **list;
707 	const sc_renderer_t *p;
708 
709 	if (!LIST_EMPTY(&sc_rndr_list)) {
710 		LIST_FOREACH(p, &sc_rndr_list, link) {
711 			if ((strcmp(p->name, name) == 0) &&
712 			    (model == p->model)) {
713 				scp->status &=
714 				    ~(VR_CURSOR_ON | VR_CURSOR_BLINK);
715 				return p->rndrsw;
716 			}
717 		}
718 	} else {
719 		SET_FOREACH(list, scrndr_set) {
720 			p = *list;
721 			if ((strcmp(p->name, name) == 0) &&
722 			    (model == p->model)) {
723 				scp->status &=
724 				    ~(VR_CURSOR_ON | VR_CURSOR_BLINK);
725 				return p->rndrsw;
726 			}
727 		}
728 	}
729 
730 	return NULL;
731 }
732