xref: /dragonfly/sys/dev/misc/syscons/scvidctl.c (revision 9f47dde1)
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  * Simple font scaling code by Sascha Wildner and Matthew Dillon
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer as
17  *    the first lines of this file unmodified.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  *
33  * $FreeBSD: src/sys/dev/syscons/scvidctl.c,v 1.19.2.2 2000/05/05 09:16:08 nyan Exp $
34  */
35 
36 #include "opt_syscons.h"
37 
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/conf.h>
41 #include <sys/signalvar.h>
42 #include <sys/tty.h>
43 #include <sys/kernel.h>
44 #include <sys/thread2.h>
45 
46 #include <machine/console.h>
47 #include <machine/framebuffer.h>
48 
49 #include <dev/video/fb/fbreg.h>
50 #include "syscons.h"
51 
52 SET_DECLARE(scrndr_set, const sc_renderer_t);
53 
54 int
55 sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize,
56 		 int fontsize)
57 {
58     video_info_t info;
59     u_char *font;
60     int prev_ysize;
61     int new_ysize;
62     int error;
63 
64     lwkt_gettoken(&vga_token);
65     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, mode, &info)) {
66 	lwkt_reltoken(&vga_token);
67 	return ENODEV;
68     }
69 
70     /* adjust argument values */
71     if (fontsize <= 0)
72 	fontsize = info.vi_cheight;
73     if (fontsize < 14) {
74 	fontsize = 8;
75 #ifndef SC_NO_FONT_LOADING
76 	if (!(scp->sc->fonts_loaded & FONT_8))
77 	    return EINVAL;
78 	font = scp->sc->font_8;
79 #else
80 	font = NULL;
81 #endif
82     } else if (fontsize >= 16) {
83 	fontsize = 16;
84 #ifndef SC_NO_FONT_LOADING
85 	if (!(scp->sc->fonts_loaded & FONT_16))
86 	    return EINVAL;
87 	font = scp->sc->font_16;
88 #else
89 	font = NULL;
90 #endif
91     } else {
92 	fontsize = 14;
93 #ifndef SC_NO_FONT_LOADING
94 	if (!(scp->sc->fonts_loaded & FONT_14))
95 	    return EINVAL;
96 	font = scp->sc->font_14;
97 #else
98 	font = NULL;
99 #endif
100     }
101     if ((xsize <= 0) || (xsize > info.vi_width))
102 	xsize = info.vi_width;
103     if ((ysize <= 0) || (ysize > info.vi_height))
104 	ysize = info.vi_height;
105 
106     /* stop screen saver, etc */
107     if ((error = sc_clean_up(scp, FALSE))) {
108 	lwkt_reltoken(&vga_token);
109 	return error;
110     }
111 
112     if (scp->sc->fbi != NULL &&
113 	sc_render_match(scp, "kms", V_INFO_MM_TEXT) == NULL) {
114 	lwkt_reltoken(&vga_token);
115 	return ENODEV;
116     }
117     if (scp->sc->fbi == NULL &&
118 	sc_render_match(scp, scp->sc->adp->va_name, V_INFO_MM_TEXT) == NULL) {
119 	lwkt_reltoken(&vga_token);
120 	return ENODEV;
121     }
122 
123     /* set up scp */
124     new_ysize = 0;
125 #ifndef SC_NO_HISTORY
126     if (scp->history != NULL) {
127 	sc_hist_save(scp);
128 	new_ysize = sc_vtb_rows(scp->history);
129     }
130 #endif
131     prev_ysize = scp->ysize;
132     /*
133      * This is a kludge to fend off scrn_update() while we
134      * muck around with scp. XXX
135      */
136     scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
137     scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE | MOUSE_VISIBLE);
138     scp->mode = mode;
139     scp->model = V_INFO_MM_TEXT;
140     scp->xsize = xsize;
141     scp->ysize = ysize;
142     scp->xoff = 0;
143     scp->yoff = 0;
144     scp->xpixel = scp->xsize*8;
145     scp->ypixel = scp->ysize*fontsize;
146     scp->font = font;
147     scp->font_height = fontsize;
148     scp->font_width = 8;
149 
150     /* allocate buffers */
151     sc_alloc_scr_buffer(scp, TRUE, TRUE);
152     sc_init_emulator(scp, NULL);
153 #ifndef SC_NO_CUTPASTE
154     sc_alloc_cut_buffer(scp, FALSE);
155 #endif
156 #ifndef SC_NO_HISTORY
157     sc_alloc_history_buffer(scp, new_ysize, prev_ysize, FALSE);
158 #endif
159 
160     if (scp == scp->sc->cur_scp)
161 	set_mode(scp);
162     scp->status &= ~UNKNOWN_MODE;
163 
164     if (tp) {
165 	DPRINTF(5, ("ws_*size (%d,%d), size (%d,%d)\n",
166 		tp->t_winsize.ws_col, tp->t_winsize.ws_row,
167 		scp->xsize, scp->ysize));
168 	if (tp->t_winsize.ws_col != scp->xsize ||
169 	    tp->t_winsize.ws_row != scp->ysize) {
170 	    tp->t_winsize.ws_col = scp->xsize;
171 	    tp->t_winsize.ws_row = scp->ysize;
172 	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
173 	}
174     }
175     lwkt_reltoken(&vga_token);
176 
177     return 0;
178 }
179 
180 int
181 sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode)
182 {
183 #ifdef SC_NO_MODE_CHANGE
184     return ENODEV;
185 #else
186     video_info_t info;
187     int error;
188 
189     lwkt_gettoken(&vga_token);
190     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, mode, &info)) {
191         lwkt_reltoken(&vga_token);
192 	return ENODEV;
193     }
194     lwkt_reltoken(&vga_token);
195 
196     /* stop screen saver, etc */
197     crit_enter();
198     if ((error = sc_clean_up(scp, FALSE))) {
199 	crit_exit();
200 	return error;
201     }
202 
203     if (scp->sc->fbi != NULL &&
204 	sc_render_match(scp, "kms", V_INFO_MM_OTHER) == NULL) {
205 	crit_exit();
206 	return ENODEV;
207     }
208     if (scp->sc->fbi == NULL &&
209 	sc_render_match(scp, scp->sc->adp->va_name, V_INFO_MM_OTHER) == NULL) {
210 	crit_exit();
211 	return ENODEV;
212     }
213 
214     /* set up scp */
215     scp->status |= (UNKNOWN_MODE | GRAPHICS_MODE | MOUSE_HIDDEN);
216     scp->status &= ~(PIXEL_MODE | MOUSE_VISIBLE);
217     scp->mode = mode;
218     scp->model = V_INFO_MM_OTHER;
219     /*
220      * Don't change xsize and ysize; preserve the previous vty
221      * and history buffers.
222      */
223     scp->xoff = 0;
224     scp->yoff = 0;
225     scp->xpixel = info.vi_width;
226     scp->ypixel = info.vi_height;
227     scp->font = NULL;
228     scp->font_height = 0;
229     scp->font_width = 0;
230 #ifndef SC_NO_SYSMOUSE
231     /* move the mouse cursor at the center of the screen */
232     sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
233 #endif
234     sc_init_emulator(scp, NULL);
235     crit_exit();
236 
237     if (scp == scp->sc->cur_scp)
238 	set_mode(scp);
239     /* clear_graphics();*/
240     refresh_ega_palette(scp);
241     scp->status &= ~UNKNOWN_MODE;
242 
243     if (tp) {
244 	if (tp->t_winsize.ws_xpixel != scp->xpixel ||
245 	    tp->t_winsize.ws_ypixel != scp->ypixel) {
246 	    tp->t_winsize.ws_xpixel = scp->xpixel;
247 	    tp->t_winsize.ws_ypixel = scp->ypixel;
248 	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
249 	}
250     }
251 
252     return 0;
253 #endif /* SC_NO_MODE_CHANGE */
254 }
255 
256 int
257 sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
258 		  int fontsize)
259 {
260 #ifndef SC_PIXEL_MODE
261     return ENODEV;
262 #else
263     video_info_t info;
264     u_char *font;
265     int prev_ysize;
266     int new_ysize;
267     int error;
268 
269     lwkt_gettoken(&vga_token);
270     if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info)) {
271         lwkt_reltoken(&vga_token);
272 	return ENODEV;		/* this shouldn't happen */
273     }
274     lwkt_reltoken(&vga_token);
275 
276     /* adjust argument values */
277     if (fontsize <= 0)
278 	fontsize = info.vi_cheight;
279     if (fontsize < 14) {
280 	fontsize = 8;
281 #ifndef SC_NO_FONT_LOADING
282 	if (!(scp->sc->fonts_loaded & FONT_8))
283 	    return EINVAL;
284 	font = scp->sc->font_8;
285 #else
286 	font = NULL;
287 #endif
288     } else if (fontsize >= 16) {
289 	fontsize = 16;
290 #ifndef SC_NO_FONT_LOADING
291 	if (!(scp->sc->fonts_loaded & FONT_16))
292 	    return EINVAL;
293 	font = scp->sc->font_16;
294 #else
295 	font = NULL;
296 #endif
297     } else {
298 	fontsize = 14;
299 #ifndef SC_NO_FONT_LOADING
300 	if (!(scp->sc->fonts_loaded & FONT_14))
301 	    return EINVAL;
302 	font = scp->sc->font_14;
303 #else
304 	font = NULL;
305 #endif
306     }
307     if (xsize <= 0)
308 	xsize = info.vi_width/8;
309     if (ysize <= 0)
310 	ysize = info.vi_height/fontsize;
311 
312     if ((info.vi_width < xsize*8) || (info.vi_height < ysize*fontsize))
313 	return EINVAL;
314 
315     /*
316      * We currently support the following graphic modes:
317      *
318      * - 4 bpp planar modes whose memory size does not exceed 64K
319      * - 8 bbp packed pixel modes
320      * - 15, 16, 24 and 32 bpp direct modes with linear frame buffer
321      */
322 
323     if (info.vi_mem_model == V_INFO_MM_PLANAR) {
324 	if (info.vi_planes != 4)
325 	    return ENODEV;
326 
327 	/*
328 	 * A memory size >64K requires bank switching to access the entire
329 	 * screen. XXX
330 	 */
331 
332 	if (info.vi_width * info.vi_height / 8 > info.vi_window_size)
333 	    return ENODEV;
334     } else if (info.vi_mem_model == V_INFO_MM_PACKED) {
335 	if (info.vi_depth != 8)
336 	    return ENODEV;
337     } else if (info.vi_mem_model == V_INFO_MM_DIRECT) {
338 	if (!(info.vi_flags & V_INFO_LINEAR) &&
339 	    (info.vi_depth != 15) && (info.vi_depth != 16) &&
340 	    (info.vi_depth != 24) && (info.vi_depth != 32))
341 	    return ENODEV;
342     } else
343 	return ENODEV;
344 
345     /* stop screen saver, etc */
346     crit_enter();
347     if ((error = sc_clean_up(scp, FALSE))) {
348 	crit_exit();
349 	return error;
350     }
351 
352     if (sc_render_match(scp, scp->sc->adp->va_name, info.vi_mem_model) == NULL) {
353 	crit_exit();
354 	return ENODEV;
355     }
356 
357 #if 0
358     if (scp->tsw)
359 	(*scp->tsw->te_term)(scp, scp->ts);
360     scp->tsw = NULL;
361     scp->ts = NULL;
362 #endif
363 
364     /* set up scp */
365     new_ysize = 0;
366 #ifndef SC_NO_HISTORY
367     if (scp->history != NULL) {
368 	sc_hist_save(scp);
369 	new_ysize = sc_vtb_rows(scp->history);
370     }
371 #endif
372     prev_ysize = scp->ysize;
373     scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
374     scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
375     scp->model = info.vi_mem_model;
376     scp->xsize = xsize;
377     scp->ysize = ysize;
378     scp->xoff = (scp->xpixel/8 - xsize)/2;
379     scp->yoff = (scp->ypixel/fontsize - ysize)/2;
380     scp->font = font;
381     scp->font_height = fontsize;
382     scp->font_width = 8;
383 
384     /* allocate buffers */
385     sc_alloc_scr_buffer(scp, TRUE, TRUE);
386     sc_init_emulator(scp, NULL);
387 #ifndef SC_NO_CUTPASTE
388     sc_alloc_cut_buffer(scp, FALSE);
389 #endif
390 #ifndef SC_NO_HISTORY
391     sc_alloc_history_buffer(scp, new_ysize, prev_ysize, FALSE);
392 #endif
393     crit_exit();
394 
395     if (scp == scp->sc->cur_scp) {
396 	sc_set_border(scp, scp->border);
397 	sc_set_cursor_image(scp);
398     }
399 
400     scp->status &= ~UNKNOWN_MODE;
401 
402     if (tp) {
403 	if (tp->t_winsize.ws_col != scp->xsize ||
404 	    tp->t_winsize.ws_row != scp->ysize) {
405 	    tp->t_winsize.ws_col = scp->xsize;
406 	    tp->t_winsize.ws_row = scp->ysize;
407 	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
408 	}
409     }
410 
411     return 0;
412 #endif /* SC_PIXEL_MODE */
413 }
414 
415 #define fb_ioctl(a, c, d)		\
416 	(((a) == NULL) ? ENODEV : 	\
417 			 (*vidsw[(a)->va_index]->ioctl)((a), (c), (caddr_t)(d)))
418 
419 int
420 sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag)
421 {
422     scr_stat *scp;
423     video_adapter_t *adp;
424 #ifndef SC_NO_MODE_CHANGE
425     video_info_t info;
426 #endif
427     int error, ret;
428 
429     KKASSERT(tp->t_dev);
430 
431     scp = SC_STAT(tp->t_dev);
432     if (scp == NULL)		/* tp == SC_MOUSE */
433 	return ENOIOCTL;
434     adp = scp->sc->adp;
435     if (adp == NULL && scp->sc->fbi == NULL)	/* shouldn't happen??? */
436 	return ENODEV;
437 
438     lwkt_gettoken(&vga_token);
439     switch (cmd) {
440 
441     case CONS_CURRENTADP:	/* get current adapter index */
442     case FBIO_ADAPTER:
443 	if (scp->sc->fbi != NULL) {
444 	    ret = ENODEV;
445 	} else {
446 	    ret = fb_ioctl(adp, FBIO_ADAPTER, data);
447 	}
448 	lwkt_reltoken(&vga_token);
449 	return ret;
450 
451     case CONS_CURRENT:  	/* get current adapter type */
452     case FBIO_ADPTYPE:
453 	if (scp->sc->fbi != NULL) {
454 	    ret = ENODEV;
455 	} else {
456 	    ret = fb_ioctl(adp, FBIO_ADPTYPE, data);
457 	}
458 	lwkt_reltoken(&vga_token);
459 	return ret;
460 
461     case CONS_ADPINFO:		/* adapter information */
462     case FBIO_ADPINFO:
463 	if (scp->sc->fbi != NULL) {
464 	    lwkt_reltoken(&vga_token);
465 	    return ENODEV;
466 	}
467 	if (((video_adapter_info_t *)data)->va_index >= 0) {
468 	    adp = vid_get_adapter(((video_adapter_info_t *)data)->va_index);
469 	    if (adp == NULL) {
470 		lwkt_reltoken(&vga_token);
471 		return ENODEV;
472 	    }
473 	}
474 	ret = fb_ioctl(adp, FBIO_ADPINFO, data);
475 	lwkt_reltoken(&vga_token);
476 	return ret;
477 
478     case CONS_GET:      	/* get current video mode */
479     case FBIO_GETMODE:
480 	*(int *)data = scp->mode;
481 	lwkt_reltoken(&vga_token);
482 	return 0;
483 
484 #ifndef SC_NO_MODE_CHANGE
485     case CONS_SET:
486     case FBIO_SETMODE:		/* set video mode */
487 	if (scp->sc->fbi != NULL) {
488 		lwkt_reltoken(&vga_token);
489 		if (*(int *)data != 0)
490 			return ENODEV;
491 		else
492 			return 0;
493 	}
494 	if (!(adp->va_flags & V_ADP_MODECHANGE)) {
495 	    lwkt_reltoken(&vga_token);
496  	    return ENODEV;
497 	}
498 	info.vi_mode = *(int *)data;
499 	error = fb_ioctl(adp, FBIO_MODEINFO, &info);
500 	if (error) {
501 	    lwkt_reltoken(&vga_token);
502 	    return error;
503 	}
504 	if (info.vi_flags & V_INFO_GRAPHICS) {
505 	    lwkt_reltoken(&vga_token);
506 	    return sc_set_graphics_mode(scp, tp, *(int *)data);
507 	} else {
508 	    lwkt_reltoken(&vga_token);
509 	    return sc_set_text_mode(scp, tp, *(int *)data, 0, 0, 0);
510 	}
511 #endif /* SC_NO_MODE_CHANGE */
512 
513     case CONS_MODEINFO:		/* get mode information */
514     case FBIO_MODEINFO:
515 	if (scp->sc->fbi != NULL) {
516 	    /* Fabricate some mode information for KMS framebuffer */
517 	    video_info_t *vinfo = (video_info_t *)data;
518 	    vinfo->vi_mode = 0;
519 	    vinfo->vi_flags = V_INFO_COLOR;
520 	    vinfo->vi_width = scp->xsize;
521 	    vinfo->vi_height = scp->ysize;
522 	    vinfo->vi_cwidth = scp->font_width;
523 	    vinfo->vi_cheight = scp->font_height;
524 	    vinfo->vi_window = 0;
525 	    vinfo->vi_window_size = 0;
526 	    vinfo->vi_buffer = 0;
527 	    vinfo->vi_buffer_size = 0;
528 	    vinfo->vi_mem_model = V_INFO_MM_TEXT;
529 	    ret = 0;
530 	} else {
531 	    ret = fb_ioctl(adp, FBIO_MODEINFO, data);
532 	}
533 	lwkt_reltoken(&vga_token);
534 	return ret;
535 
536     case CONS_FINDMODE:		/* find a matching video mode */
537     case FBIO_FINDMODE:
538 	if (scp->sc->fbi != NULL) {
539 	    ret = ENODEV;
540 	} else {
541 	    ret = fb_ioctl(adp, FBIO_FINDMODE, data);
542 	}
543 	lwkt_reltoken(&vga_token);
544 	return ret;
545 
546     case CONS_SETWINORG:	/* set frame buffer window origin */
547     case FBIO_SETWINORG:
548 	if (scp != scp->sc->cur_scp) {
549 	    lwkt_reltoken(&vga_token);
550 	    return ENODEV;	/* XXX */
551 	}
552 	if (scp->sc->fbi != NULL) {
553 	    lwkt_reltoken(&vga_token);
554 	    return ENODEV;
555 	}
556 	ret = fb_ioctl(adp, FBIO_SETWINORG, data);
557 	lwkt_reltoken(&vga_token);
558 	return ret;
559 
560     case FBIO_GETWINORG:	/* get frame buffer window origin */
561 	if (scp != scp->sc->cur_scp) {
562 	    lwkt_reltoken(&vga_token);
563 	    return ENODEV;	/* XXX */
564 	}
565 	if (scp->sc->fbi != NULL) {
566 	    ret = ENODEV;
567 	} else {
568 	    ret = fb_ioctl(adp, FBIO_GETWINORG, data);
569 	}
570 	lwkt_reltoken(&vga_token);
571 	return ret;
572 
573     case FBIO_GETDISPSTART:
574     case FBIO_SETDISPSTART:
575     case FBIO_GETLINEWIDTH:
576     case FBIO_SETLINEWIDTH:
577 	if (scp != scp->sc->cur_scp) {
578 	    lwkt_reltoken(&vga_token);
579 	    return ENODEV;	/* XXX */
580 	}
581 	if (scp->sc->fbi != NULL) {
582 	    if (cmd == FBIO_GETLINEWIDTH) {
583 		*(u_int *)data = scp->sc->fbi->stride;
584 		ret = 0;
585 	    } else {
586 		ret = ENODEV;
587 	    }
588 	} else {
589 	    ret = fb_ioctl(adp, cmd, data);
590 	}
591 	lwkt_reltoken(&vga_token);
592 	return ret;
593 
594     case FBIO_BLANK:
595 	if (scp != scp->sc->cur_scp) {
596 	    lwkt_reltoken(&vga_token);
597 	    return ENODEV;
598 	}
599 	if (scp->sc->fbi != NULL && ISGRAPHSC(scp)) {
600 	    if (*(int *)data == V_DISPLAY_ON)
601 		sc_stop_scrn_saver(scp->sc);
602 	    else
603 		sc_start_scrn_saver(scp->sc);
604 	    ret = 0;
605 	} else {
606 	    ret = ENODEV;
607 	}
608 	lwkt_reltoken(&vga_token);
609 	return ret;
610 
611     case FBIO_GETPALETTE:
612     case FBIO_SETPALETTE:
613     case FBIOPUTCMAP:
614     case FBIOGETCMAP:
615     case FBIOGTYPE:
616     case FBIOGATTR:
617     case FBIOSVIDEO:
618     case FBIOGVIDEO:
619     case FBIOSCURSOR:
620     case FBIOGCURSOR:
621     case FBIOSCURPOS:
622     case FBIOGCURPOS:
623     case FBIOGCURMAX:
624 	if (scp != scp->sc->cur_scp) {
625 	    lwkt_reltoken(&vga_token);
626 	    return ENODEV;	/* XXX */
627 	}
628 	if (scp->sc->fbi != NULL) {
629 	    if (cmd == FBIOGTYPE) {
630 		((struct fbtype *)data)->fb_type = FBTYPE_DUMBFB;
631 		((struct fbtype *)data)->fb_height = scp->sc->fbi->height;
632 		((struct fbtype *)data)->fb_width = scp->sc->fbi->width;
633 		((struct fbtype *)data)->fb_depth = scp->sc->fbi->depth;
634 		((struct fbtype *)data)->fb_cmsize = 0;
635 		((struct fbtype *)data)->fb_size =
636 		    scp->sc->fbi->height * scp->sc->fbi->stride;
637 		ret = 0;
638 	    } else {
639 		ret = ENODEV;
640 	    }
641 	} else {
642 	    ret = fb_ioctl(adp, cmd, data);
643 	}
644 	lwkt_reltoken(&vga_token);
645 	return ret;
646 
647     case KDSETMODE:     	/* set current mode of this (virtual) console */
648 	switch (*(int *)data) {
649 	case KD_TEXT:   	/* switch to TEXT (known) mode */
650 	    /*
651 	     * If scp->mode is of graphics modes, we don't know which
652 	     * text mode to switch back to...
653 	     */
654 	    if (scp->status & GRAPHICS_MODE) {
655 	        lwkt_reltoken(&vga_token);
656 		return EINVAL;
657 	    }
658 	    /* restore fonts & palette ! */
659 #if 0
660 #ifndef SC_NO_FONT_LOADING
661 	    if (scp->sc->fbi == NULL && ISFONTAVAIL(adp->va_flags)
662 		&& !(scp->status & (GRAPHICS_MODE | PIXEL_MODE))) {
663 		/*
664 		 * FONT KLUDGE
665 		 * Don't load fonts for now... XXX
666 		 */
667 		if (scp->sc->fonts_loaded & FONT_8)
668 		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
669 		if (scp->sc->fonts_loaded & FONT_14)
670 		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
671 		if (scp->sc->fonts_loaded & FONT_16)
672 		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
673 	    }
674 #endif /* SC_NO_FONT_LOADING */
675 #endif
676 
677 	    if (scp->sc->fbi == NULL)
678 		load_palette(adp, scp->sc->palette);
679 
680 	    /* move hardware cursor out of the way */
681 	    if (scp->sc->fbi == NULL)
682 		(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
683 	    /* FALL THROUGH */
684 
685 	case KD_TEXT1:  	/* switch to TEXT (known) mode */
686 	    /*
687 	     * If scp->mode is of graphics modes, we don't know which
688 	     * text/pixel mode to switch back to...
689 	     */
690 	    if (scp->status & GRAPHICS_MODE) {
691 	        lwkt_reltoken(&vga_token);
692 		return EINVAL;
693 	    }
694 	    crit_enter();
695 	    if ((error = sc_clean_up(scp, FALSE))) {
696 		crit_exit();
697 		lwkt_reltoken(&vga_token);
698 		return error;
699 	    }
700 	    scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
701 	    crit_exit();
702 	    /* no restore fonts & palette */
703 	    if (scp == scp->sc->cur_scp)
704 		set_mode(scp);
705 	    sc_clear_screen(scp);
706 	    scp->status &= ~UNKNOWN_MODE;
707 	    lwkt_reltoken(&vga_token);
708 	    return 0;
709 
710 #ifdef SC_PIXEL_MODE
711 	case KD_PIXEL:		/* pixel (raster) display */
712 	    if (!(scp->status & (GRAPHICS_MODE | PIXEL_MODE))) {
713 	        lwkt_reltoken(&vga_token);
714 		return EINVAL;
715             }
716 	    if (scp->sc->fbi != NULL) {
717 		lwkt_reltoken(&vga_token);
718 		return ENODEV;
719 	    }
720 	    if (scp->status & GRAPHICS_MODE) {
721 	        lwkt_reltoken(&vga_token);
722 		return sc_set_pixel_mode(scp, tp, scp->xsize, scp->ysize,
723 					 scp->font_height);
724 	    }
725 	    crit_enter();
726 	    if ((error = sc_clean_up(scp, FALSE))) {
727 		crit_exit();
728 		lwkt_reltoken(&vga_token);
729 		return error;
730 	    }
731 	    scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
732 	    crit_exit();
733 	    if (scp == scp->sc->cur_scp) {
734 		set_mode(scp);
735 		load_palette(adp, scp->sc->palette);
736 	    }
737 	    sc_clear_screen(scp);
738 	    scp->status &= ~UNKNOWN_MODE;
739 	    lwkt_reltoken(&vga_token);
740 	    return 0;
741 #endif /* SC_PIXEL_MODE */
742 
743 	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
744 	    crit_enter();
745 	    if ((error = sc_clean_up(scp, FALSE))) {
746 		crit_exit();
747 		lwkt_reltoken(&vga_token);
748 		return error;
749 	    }
750 	    scp->status |= UNKNOWN_MODE | MOUSE_HIDDEN;
751 	    crit_exit();
752 	    lwkt_reltoken(&vga_token);
753 	    return 0;
754 
755 	default:
756 	    lwkt_reltoken(&vga_token);
757 	    return EINVAL;
758 	}
759 	/* NOT REACHED */
760 
761 #ifdef SC_PIXEL_MODE
762     case KDRASTER:		/* set pixel (raster) display mode */
763 	if (scp->sc->fbi != NULL || ISUNKNOWNSC(scp) || ISTEXTSC(scp)) {
764 	    lwkt_reltoken(&vga_token);
765 	    return ENODEV;
766 	}
767 	lwkt_reltoken(&vga_token);
768 	return sc_set_pixel_mode(scp, tp, ((int *)data)[0], ((int *)data)[1],
769 				 ((int *)data)[2]);
770 #endif /* SC_PIXEL_MODE */
771 
772     case KDGETMODE:     	/* get current mode of this (virtual) console */
773 	/*
774 	 * From the user program's point of view, KD_PIXEL is the same
775 	 * as KD_TEXT...
776 	 */
777 	*data = ISGRAPHSC(scp) ? KD_GRAPHICS : KD_TEXT;
778 	lwkt_reltoken(&vga_token);
779 	return 0;
780 
781     case KDSBORDER:     	/* set border color of this (virtual) console */
782 	/* Only values in the range [0..15] allowed */
783 	if (*(int *)data < 0 || *(int *)data > 15) {
784 		lwkt_reltoken(&vga_token);
785 		return EINVAL;
786 	}
787 	scp->border = *(int *)data;
788 	if (scp == scp->sc->cur_scp)
789 	    sc_set_border(scp, scp->border);
790 	lwkt_reltoken(&vga_token);
791 	return 0;
792     }
793 
794     lwkt_reltoken(&vga_token);
795     return ENOIOCTL;
796 }
797 
798 static LIST_HEAD(, sc_renderer) sc_rndr_list =
799 	LIST_HEAD_INITIALIZER(sc_rndr_list);
800 
801 int
802 sc_render_add(sc_renderer_t *rndr)
803 {
804 	LIST_INSERT_HEAD(&sc_rndr_list, rndr, link);
805 	return 0;
806 }
807 
808 int
809 sc_render_remove(sc_renderer_t *rndr)
810 {
811 	/*
812 	LIST_REMOVE(rndr, link);
813 	*/
814 	return EBUSY;	/* XXX */
815 }
816 
817 sc_rndr_sw_t *
818 sc_render_match(scr_stat *scp, char *name, int model)
819 {
820 	const sc_renderer_t **list;
821 	const sc_renderer_t *p;
822 
823 	if (!LIST_EMPTY(&sc_rndr_list)) {
824 		LIST_FOREACH(p, &sc_rndr_list, link) {
825 			if ((strcmp(p->name, name) == 0) &&
826 			    (model == p->model)) {
827 				scp->status &=
828 				    ~(VR_CURSOR_ON | VR_CURSOR_BLINK);
829 				return p->rndrsw;
830 			}
831 		}
832 	} else {
833 		SET_FOREACH(list, scrndr_set) {
834 			p = *list;
835 			if ((strcmp(p->name, name) == 0) &&
836 			    (model == p->model)) {
837 				scp->status &=
838 				    ~(VR_CURSOR_ON | VR_CURSOR_BLINK);
839 				return p->rndrsw;
840 			}
841 		}
842 	}
843 
844 	return NULL;
845 }
846 
847 #define VIRTUAL_TTY(sc, x) ((SC_DEV((sc),(x)) != NULL) ?	\
848 	(SC_DEV((sc),(x))->si_tty) : NULL)
849 
850 void
851 sc_update_render(scr_stat *scp)
852 {
853 	sc_rndr_sw_t *rndr;
854 	sc_term_sw_t *sw;
855 	struct tty *tp;
856 	int prev_ysize, new_ysize;
857 #ifndef SC_NO_HISTORY
858 	int old_xpos, old_ypos;
859 #endif
860 	int error;
861 
862 	sw = scp->tsw;
863 	if (sw == NULL) {
864 		return;
865 	}
866 
867 	if (scp->rndr == NULL)
868 		return;
869 
870 	if (scp->fbi_generation == scp->sc->fbi_generation)
871 		return;
872 
873 	crit_enter();
874 	scp->fbi_generation = scp->sc->fbi_generation;
875 	/* Needed in case we are implicitly leaving PIXEL_MODE here */
876 	if (scp->model != V_INFO_MM_OTHER)
877 		scp->model = V_INFO_MM_TEXT;
878 	rndr = NULL;
879 	if (strcmp(sw->te_renderer, "*") != 0) {
880 		rndr = sc_render_match(scp, sw->te_renderer, scp->model);
881 	}
882 	if (rndr == NULL && scp->sc->fbi != NULL) {
883 		rndr = sc_render_match(scp, "kms", scp->model);
884 	}
885 	if (rndr == NULL) {	/* this shouldn't happen */
886 		rndr = sc_render_match(scp, scp->sc->adp->va_name, scp->model);
887 		if (rndr != NULL)
888 			scp->rndr = rndr;
889 		crit_exit();
890 		return;
891 	}
892 
893 	scp->rndr = rndr;
894 	/* Mostly copied from sc_set_text_mode */
895 	if ((error = sc_clean_up(scp, FALSE))) {
896 		crit_exit();
897 		return;
898 	}
899 	new_ysize = 0;
900 #ifndef SC_NO_HISTORY
901 	old_xpos = old_ypos = 0;
902 	if (scp->history != NULL) {
903 		if (scp->xsize > 0) {
904 			old_xpos = scp->xpos;
905 			old_ypos = scp->ypos;
906 		}
907 		sc_hist_save(scp);
908 		new_ysize = sc_vtb_rows(scp->history);
909 	}
910 #endif
911 	prev_ysize = scp->ysize;
912 	scp->status |= MOUSE_HIDDEN;
913 	if (scp->status & GRAPHICS_MODE) {
914 		/*
915 		 * We don't handle GRAPHICS_MODE at all when using a KMS
916 		 * framebuffer, so silently switch to UNKNOWN_MODE then.
917 		 */
918 		scp->status |= UNKNOWN_MODE;
919 		scp->status &= ~GRAPHICS_MODE;
920 	}
921 	/* Implicitly leave PIXEL_MODE, but stay in UNKNOWN mode */
922 	scp->status &= ~(PIXEL_MODE | MOUSE_VISIBLE);
923 	scp->xpixel = scp->sc->fbi->width;
924 	scp->ypixel = scp->sc->fbi->height;
925 
926 	/*
927 	 * Assume square pixels for now
928 	 */
929 	sc_font_scale(scp, 0, 0);
930 
931 	DPRINTF(1, ("kms console: scale-to %dx%d cols=%d rows=%d\n",
932 		scp->blk_width, scp->blk_height, scp->xsize, scp->ysize));
933 
934 	/* allocate buffers */
935 	sc_alloc_scr_buffer(scp, TRUE, TRUE);
936 	sc_init_emulator(scp, NULL);
937 #ifndef SC_NO_CUTPASTE
938 	sc_alloc_cut_buffer(scp, FALSE);
939 #endif
940 #ifndef SC_NO_HISTORY
941 	sc_alloc_history_buffer(scp, new_ysize, prev_ysize, FALSE);
942 	if (scp->history != NULL) {
943 		sc_hist_getback(scp, prev_ysize);
944 		sc_move_cursor(scp, old_xpos, old_ypos);
945 	}
946 #endif
947 	crit_exit();
948 	tp = VIRTUAL_TTY(scp->sc, scp->index);
949 	if (tp == NULL)
950 		return;
951 	if (tp->t_winsize.ws_col != scp->xsize ||
952 	    tp->t_winsize.ws_row != scp->ysize) {
953 		tp->t_winsize.ws_col = scp->xsize;
954 		tp->t_winsize.ws_row = scp->ysize;
955 		pgsignal(tp->t_pgrp, SIGWINCH, 1);
956 	}
957 }
958