xref: /freebsd/sys/arm/broadcom/bcm2835/bcm2835_fb.c (revision 271171e0d97b88ba2a7c3bf750c9672b484c1c13)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  */
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/bus.h>
35 #include <sys/consio.h>
36 #include <sys/fbio.h>
37 #include <sys/kdb.h>
38 #include <sys/kernel.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
41 
42 #include <vm/vm.h>
43 #include <vm/pmap.h>
44 
45 #include <dev/fb/fbreg.h>
46 #include <dev/ofw/ofw_bus.h>
47 #include <dev/ofw/ofw_bus_subr.h>
48 #include <dev/syscons/syscons.h>
49 
50 #include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
51 
52 #include "mbox_if.h"
53 
54 struct argb {
55 	uint8_t		a;
56 	uint8_t		r;
57 	uint8_t		g;
58 	uint8_t		b;
59 };
60 
61 static struct argb bcmfb_palette[16] = {
62 	{0x00, 0x00, 0x00, 0x00},
63 	{0x00, 0x00, 0x00, 0xaa},
64 	{0x00, 0x00, 0xaa, 0x00},
65 	{0x00, 0x00, 0xaa, 0xaa},
66 	{0x00, 0xaa, 0x00, 0x00},
67 	{0x00, 0xaa, 0x00, 0xaa},
68 	{0x00, 0xaa, 0x55, 0x00},
69 	{0x00, 0xaa, 0xaa, 0xaa},
70 	{0x00, 0x55, 0x55, 0x55},
71 	{0x00, 0x55, 0x55, 0xff},
72 	{0x00, 0x55, 0xff, 0x55},
73 	{0x00, 0x55, 0xff, 0xff},
74 	{0x00, 0xff, 0x55, 0x55},
75 	{0x00, 0xff, 0x55, 0xff},
76 	{0x00, 0xff, 0xff, 0x55},
77 	{0x00, 0xff, 0xff, 0xff}
78 };
79 
80 /* mouse pointer from dev/syscons/scgfbrndr.c */
81 static u_char mouse_pointer[16] = {
82         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
83         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
84 };
85 
86 #define	BCMFB_FONT_HEIGHT	16
87 #define	BCMFB_FONT_WIDTH	8
88 #define	FB_WIDTH		640
89 #define	FB_HEIGHT		480
90 #define	FB_DEPTH		24
91 
92 struct bcmsc_softc {
93 	/* Videoadpater part */
94 	video_adapter_t	va;
95 
96 	intptr_t	fb_addr;
97 	intptr_t	fb_paddr;
98 	unsigned int	fb_size;
99 
100 	unsigned int	height;
101 	unsigned int	width;
102 	unsigned int	depth;
103 	unsigned int	stride;
104 
105 	unsigned int	xmargin;
106 	unsigned int	ymargin;
107 
108 	unsigned char	*font;
109 	int		fbswap;
110 	int		initialized;
111 };
112 
113 static struct bcmsc_softc bcmsc;
114 
115 static struct ofw_compat_data compat_data[] = {
116 	{"broadcom,bcm2835-fb",		1},
117 	{"brcm,bcm2708-fb",		1},
118 	{NULL,				0}
119 };
120 
121 static int bcm_fb_probe(device_t);
122 static int bcm_fb_attach(device_t);
123 static void bcmfb_update_margins(video_adapter_t *adp);
124 static int bcmfb_configure(int);
125 
126 static int
127 bcm_fb_probe(device_t dev)
128 {
129 	int error;
130 
131 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
132 		return (ENXIO);
133 
134 	device_set_desc(dev, "BCM2835 framebuffer device");
135 	error = sc_probe_unit(device_get_unit(dev),
136 	    device_get_flags(dev) | SC_AUTODETECT_KBD);
137 	if (error != 0)
138 		return (error);
139 
140 	return (BUS_PROBE_DEFAULT);
141 }
142 
143 static int
144 bcm_fb_attach(device_t dev)
145 {
146 	struct bcm2835_fb_config fb;
147 	struct bcmsc_softc *sc;
148 
149 	sc = (struct bcmsc_softc *)vid_get_adapter(vid_find_adapter(
150 	    "bcmfb", 0));
151 	if (sc != NULL)
152 		device_set_softc(dev, sc);
153 	else
154 		sc = device_get_softc(dev);
155 
156 	memset(&fb, 0, sizeof(fb));
157 	if (bcm2835_mbox_fb_get_w_h(&fb) != 0)
158 		return (ENXIO);
159 	fb.bpp = FB_DEPTH;
160 	fb.vxres = fb.xres;
161 	fb.vyres = fb.yres;
162 	fb.xoffset = fb.yoffset = 0;
163 	if (bcm2835_mbox_fb_init(&fb) != 0)
164 		return (ENXIO);
165 
166 	sc->fb_addr = (intptr_t)pmap_mapdev(fb.base, fb.size);
167 	sc->fb_paddr = fb.base;
168 	sc->fb_size = fb.size;
169 	sc->depth = fb.bpp;
170 	sc->stride = fb.pitch;
171 	sc->width = fb.xres;
172 	sc->height = fb.yres;
173 	bcmfb_update_margins(&sc->va);
174 
175 	if (sc_attach_unit(device_get_unit(dev),
176 	    device_get_flags(dev) | SC_AUTODETECT_KBD) != 0) {
177 		device_printf(dev, "failed to attach syscons\n");
178 		return (ENXIO);
179 	}
180 
181 	device_printf(dev, "%dx%d(%dx%d@%d,%d) %dbpp\n", fb.xres, fb.yres,
182 	    fb.vxres, fb.vyres, fb.xoffset, fb.yoffset, fb.bpp);
183 	device_printf(dev,
184 	    "fbswap: %d, pitch %d, base 0x%08x, screen_size %d\n",
185 	    sc->fbswap, fb.pitch, fb.base, fb.size);
186 
187 	return (0);
188 }
189 
190 static device_method_t bcm_fb_methods[] = {
191 	/* Device interface */
192 	DEVMETHOD(device_probe,		bcm_fb_probe),
193 	DEVMETHOD(device_attach,	bcm_fb_attach),
194 	{ 0, 0 }
195 };
196 
197 static driver_t bcm_fb_driver = {
198 	"fb",
199 	bcm_fb_methods,
200 	sizeof(struct bcmsc_softc),
201 };
202 
203 DRIVER_MODULE(bcm2835fb, ofwbus, bcm_fb_driver, 0, 0);
204 DRIVER_MODULE(bcm2835fb, simplebus, bcm_fb_driver, 0, 0);
205 
206 /*
207  * Video driver routines and glue.
208  */
209 static vi_probe_t		bcmfb_probe;
210 static vi_init_t		bcmfb_init;
211 static vi_get_info_t		bcmfb_get_info;
212 static vi_query_mode_t		bcmfb_query_mode;
213 static vi_set_mode_t		bcmfb_set_mode;
214 static vi_save_font_t		bcmfb_save_font;
215 static vi_load_font_t		bcmfb_load_font;
216 static vi_show_font_t		bcmfb_show_font;
217 static vi_save_palette_t	bcmfb_save_palette;
218 static vi_load_palette_t	bcmfb_load_palette;
219 static vi_set_border_t		bcmfb_set_border;
220 static vi_save_state_t		bcmfb_save_state;
221 static vi_load_state_t		bcmfb_load_state;
222 static vi_set_win_org_t		bcmfb_set_win_org;
223 static vi_read_hw_cursor_t	bcmfb_read_hw_cursor;
224 static vi_set_hw_cursor_t	bcmfb_set_hw_cursor;
225 static vi_set_hw_cursor_shape_t	bcmfb_set_hw_cursor_shape;
226 static vi_blank_display_t	bcmfb_blank_display;
227 static vi_mmap_t		bcmfb_mmap;
228 static vi_ioctl_t		bcmfb_ioctl;
229 static vi_clear_t		bcmfb_clear;
230 static vi_fill_rect_t		bcmfb_fill_rect;
231 static vi_bitblt_t		bcmfb_bitblt;
232 static vi_diag_t		bcmfb_diag;
233 static vi_save_cursor_palette_t	bcmfb_save_cursor_palette;
234 static vi_load_cursor_palette_t	bcmfb_load_cursor_palette;
235 static vi_copy_t		bcmfb_copy;
236 static vi_putp_t		bcmfb_putp;
237 static vi_putc_t		bcmfb_putc;
238 static vi_puts_t		bcmfb_puts;
239 static vi_putm_t		bcmfb_putm;
240 
241 static video_switch_t bcmfbvidsw = {
242 	.probe			= bcmfb_probe,
243 	.init			= bcmfb_init,
244 	.get_info		= bcmfb_get_info,
245 	.query_mode		= bcmfb_query_mode,
246 	.set_mode		= bcmfb_set_mode,
247 	.save_font		= bcmfb_save_font,
248 	.load_font		= bcmfb_load_font,
249 	.show_font		= bcmfb_show_font,
250 	.save_palette		= bcmfb_save_palette,
251 	.load_palette		= bcmfb_load_palette,
252 	.set_border		= bcmfb_set_border,
253 	.save_state		= bcmfb_save_state,
254 	.load_state		= bcmfb_load_state,
255 	.set_win_org		= bcmfb_set_win_org,
256 	.read_hw_cursor		= bcmfb_read_hw_cursor,
257 	.set_hw_cursor		= bcmfb_set_hw_cursor,
258 	.set_hw_cursor_shape	= bcmfb_set_hw_cursor_shape,
259 	.blank_display		= bcmfb_blank_display,
260 	.mmap			= bcmfb_mmap,
261 	.ioctl			= bcmfb_ioctl,
262 	.clear			= bcmfb_clear,
263 	.fill_rect		= bcmfb_fill_rect,
264 	.bitblt			= bcmfb_bitblt,
265 	.diag			= bcmfb_diag,
266 	.save_cursor_palette	= bcmfb_save_cursor_palette,
267 	.load_cursor_palette	= bcmfb_load_cursor_palette,
268 	.copy			= bcmfb_copy,
269 	.putp			= bcmfb_putp,
270 	.putc			= bcmfb_putc,
271 	.puts			= bcmfb_puts,
272 	.putm			= bcmfb_putm,
273 };
274 
275 VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
276 
277 static vr_init_t bcmrend_init;
278 static vr_clear_t bcmrend_clear;
279 static vr_draw_border_t bcmrend_draw_border;
280 static vr_draw_t bcmrend_draw;
281 static vr_set_cursor_t bcmrend_set_cursor;
282 static vr_draw_cursor_t bcmrend_draw_cursor;
283 static vr_blink_cursor_t bcmrend_blink_cursor;
284 static vr_set_mouse_t bcmrend_set_mouse;
285 static vr_draw_mouse_t bcmrend_draw_mouse;
286 
287 /*
288  * We use our own renderer; this is because we must emulate a hardware
289  * cursor.
290  */
291 static sc_rndr_sw_t bcmrend = {
292 	bcmrend_init,
293 	bcmrend_clear,
294 	bcmrend_draw_border,
295 	bcmrend_draw,
296 	bcmrend_set_cursor,
297 	bcmrend_draw_cursor,
298 	bcmrend_blink_cursor,
299 	bcmrend_set_mouse,
300 	bcmrend_draw_mouse
301 };
302 
303 RENDERER(bcmfb, 0, bcmrend, gfb_set);
304 RENDERER_MODULE(bcmfb, gfb_set);
305 
306 static void
307 bcmrend_init(scr_stat* scp)
308 {
309 }
310 
311 static void
312 bcmrend_clear(scr_stat* scp, int c, int attr)
313 {
314 }
315 
316 static void
317 bcmrend_draw_border(scr_stat* scp, int color)
318 {
319 }
320 
321 static void
322 bcmrend_draw(scr_stat* scp, int from, int count, int flip)
323 {
324 	video_adapter_t* adp = scp->sc->adp;
325 	int i, c, a;
326 
327 	if (!flip) {
328 		/* Normal printing */
329 		vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
330 	} else {
331 		/* This is for selections and such: invert the color attribute */
332 		for (i = count; i-- > 0; ++from) {
333 			c = sc_vtb_getc(&scp->vtb, from);
334 			a = sc_vtb_geta(&scp->vtb, from) >> 8;
335 			vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
336 		}
337 	}
338 }
339 
340 static void
341 bcmrend_set_cursor(scr_stat* scp, int base, int height, int blink)
342 {
343 }
344 
345 static void
346 bcmrend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
347 {
348 	int bytes, col, i, j, row;
349 	struct bcmsc_softc *sc;
350 	uint8_t *addr;
351 	video_adapter_t *adp;
352 
353 	adp = scp->sc->adp;
354 	sc = (struct bcmsc_softc *)adp;
355 
356 	if (scp->curs_attr.height <= 0)
357 		return;
358 
359 	if (sc->fb_addr == 0)
360 		return;
361 
362 	if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
363 		return;
364 
365 	/* calculate the coordinates in the video buffer */
366 	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
367 	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
368 
369 	addr = (uint8_t *)sc->fb_addr
370 	    + (row + sc->ymargin)*(sc->stride)
371 	    + (sc->depth/8) * (col + sc->xmargin);
372 
373 	bytes = sc->depth / 8;
374 	/* our cursor consists of simply inverting the char under it */
375 	for (i = 0; i < adp->va_info.vi_cheight; i++) {
376 		for (j = 0; j < adp->va_info.vi_cwidth; j++) {
377 			switch (sc->depth) {
378 			case 32:
379 			case 24:
380 				addr[bytes*j + 2] ^= 0xff;
381 				/* FALLTHROUGH */
382 			case 16:
383 				addr[bytes*j + 1] ^= 0xff;
384 				addr[bytes*j] ^= 0xff;
385 				break;
386 			default:
387 				break;
388 			}
389 		}
390 
391 		addr += sc->stride;
392 	}
393 }
394 
395 static void
396 bcmrend_blink_cursor(scr_stat* scp, int at, int flip)
397 {
398 }
399 
400 static void
401 bcmrend_set_mouse(scr_stat* scp)
402 {
403 }
404 
405 static void
406 bcmrend_draw_mouse(scr_stat* scp, int x, int y, int on)
407 {
408 	vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
409 }
410 
411 static uint16_t bcmfb_static_window[ROW*COL];
412 extern u_char dflt_font_16[];
413 
414 /*
415  * Update videoadapter settings after changing resolution
416  */
417 static void
418 bcmfb_update_margins(video_adapter_t *adp)
419 {
420 	struct bcmsc_softc *sc;
421 	video_info_t *vi;
422 
423 	sc = (struct bcmsc_softc *)adp;
424 	vi = &adp->va_info;
425 
426 	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
427 	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
428 }
429 
430 static int
431 bcmfb_configure(int flags)
432 {
433 	char bootargs[2048], *n, *p, *v;
434 	pcell_t cell;
435 	phandle_t chosen, display, root;
436 	struct bcmsc_softc *sc;
437 
438 	sc = &bcmsc;
439 	if (sc->initialized)
440 		return (0);
441 
442 	sc->width = 0;
443 	sc->height = 0;
444 
445 	/*
446 	 * It seems there is no way to let syscons framework know
447 	 * that framebuffer resolution has changed. So just try
448 	 * to fetch data from FDT bootargs, FDT display data and
449 	 * finally go with defaults if everything else has failed.
450 	 */
451 	chosen = OF_finddevice("/chosen");
452 	if (chosen != -1 &&
453 	    OF_getprop(chosen, "bootargs", &bootargs, sizeof(bootargs)) > 0) {
454 		p = bootargs;
455 		while ((v = strsep(&p, " ")) != NULL) {
456 			if (*v == '\0')
457 				continue;
458 			n = strsep(&v, "=");
459 			if (strcmp(n, "bcm2708_fb.fbwidth") == 0 && v != NULL)
460 				sc->width = (unsigned int)strtol(v, NULL, 0);
461 			else if (strcmp(n, "bcm2708_fb.fbheight") == 0 &&
462 			    v != NULL)
463 				sc->height = (unsigned int)strtol(v, NULL, 0);
464 			else if (strcmp(n, "bcm2708_fb.fbswap") == 0 &&
465 			    v != NULL)
466 				if (*v == '1')
467 					sc->fbswap = 1;
468 		}
469 	}
470 
471 	root = OF_finddevice("/");
472 	if ((root != -1) &&
473 	    (display = fdt_find_compatible(root, "broadcom,bcm2835-fb", 1))) {
474 		if (sc->width == 0) {
475 			if ((OF_getencprop(display, "broadcom,width",
476 			    &cell, sizeof(cell))) > 0)
477 				sc->width = cell;
478 		}
479 
480 		if (sc->height == 0) {
481 			if ((OF_getencprop(display, "broadcom,height",
482 			    &cell, sizeof(cell))) > 0)
483 				sc->height = cell;
484 		}
485 	}
486 
487 	if (sc->width == 0)
488 		sc->width = FB_WIDTH;
489 	if (sc->height == 0)
490 		sc->height = FB_HEIGHT;
491 
492 	bcmfb_init(0, &sc->va, 0);
493 	sc->initialized = 1;
494 
495 	return (0);
496 }
497 
498 static int
499 bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
500 {
501 
502 	return (0);
503 }
504 
505 static int
506 bcmfb_init(int unit, video_adapter_t *adp, int flags)
507 {
508 	struct bcmsc_softc *sc;
509 	video_info_t *vi;
510 
511 	sc = (struct bcmsc_softc *)adp;
512 	vi = &adp->va_info;
513 
514 	vid_init_struct(adp, "bcmfb", -1, unit);
515 
516 	sc->font = dflt_font_16;
517 	vi->vi_cheight = BCMFB_FONT_HEIGHT;
518 	vi->vi_cwidth = BCMFB_FONT_WIDTH;
519 	vi->vi_width = sc->width / vi->vi_cwidth;
520 	vi->vi_height = sc->height / vi->vi_cheight;
521 
522 	/*
523 	 * Clamp width/height to syscons maximums
524 	 */
525 	if (vi->vi_width > COL)
526 		vi->vi_width = COL;
527 	if (vi->vi_height > ROW)
528 		vi->vi_height = ROW;
529 
530 	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
531 	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
532 
533 	adp->va_window = (vm_offset_t) bcmfb_static_window;
534 	adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
535 
536 	vid_register(&sc->va);
537 
538 	return (0);
539 }
540 
541 static int
542 bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
543 {
544 	bcopy(&adp->va_info, info, sizeof(*info));
545 	return (0);
546 }
547 
548 static int
549 bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
550 {
551 	return (0);
552 }
553 
554 static int
555 bcmfb_set_mode(video_adapter_t *adp, int mode)
556 {
557 	return (0);
558 }
559 
560 static int
561 bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
562     u_char *data, int c, int count)
563 {
564 	return (0);
565 }
566 
567 static int
568 bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
569     u_char *data, int c, int count)
570 {
571 	struct bcmsc_softc *sc;
572 
573 	sc = (struct bcmsc_softc *)adp;
574 	sc->font = data;
575 
576 	return (0);
577 }
578 
579 static int
580 bcmfb_show_font(video_adapter_t *adp, int page)
581 {
582 	return (0);
583 }
584 
585 static int
586 bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
587 {
588 	return (0);
589 }
590 
591 static int
592 bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
593 {
594 	return (0);
595 }
596 
597 static int
598 bcmfb_set_border(video_adapter_t *adp, int border)
599 {
600 	return (bcmfb_blank_display(adp, border));
601 }
602 
603 static int
604 bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
605 {
606 	return (0);
607 }
608 
609 static int
610 bcmfb_load_state(video_adapter_t *adp, void *p)
611 {
612 	return (0);
613 }
614 
615 static int
616 bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
617 {
618 	return (0);
619 }
620 
621 static int
622 bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
623 {
624 	*col = *row = 0;
625 
626 	return (0);
627 }
628 
629 static int
630 bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
631 {
632 	return (0);
633 }
634 
635 static int
636 bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
637     int celsize, int blink)
638 {
639 	return (0);
640 }
641 
642 static int
643 bcmfb_blank_display(video_adapter_t *adp, int mode)
644 {
645 
646 	struct bcmsc_softc *sc;
647 
648 	sc = (struct bcmsc_softc *)adp;
649 	if (sc && sc->fb_addr)
650 		memset((void*)sc->fb_addr, 0, sc->fb_size);
651 
652 	return (0);
653 }
654 
655 static int
656 bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
657     int prot, vm_memattr_t *memattr)
658 {
659 	struct bcmsc_softc *sc;
660 
661 	sc = (struct bcmsc_softc *)adp;
662 
663 	/*
664 	 * This might be a legacy VGA mem request: if so, just point it at the
665 	 * framebuffer, since it shouldn't be touched
666 	 */
667 	if (offset < sc->stride*sc->height) {
668 		*paddr = sc->fb_paddr + offset;
669 		return (0);
670 	}
671 
672 	return (EINVAL);
673 }
674 
675 static int
676 bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
677 {
678 	struct bcmsc_softc *sc;
679 	struct fbtype *fb;
680 
681 	sc = (struct bcmsc_softc *)adp;
682 
683 	switch (cmd) {
684 	case FBIOGTYPE:
685 		fb = (struct fbtype *)data;
686 		fb->fb_type = FBTYPE_PCIMISC;
687 		fb->fb_height = sc->height;
688 		fb->fb_width = sc->width;
689 		fb->fb_depth = sc->depth;
690 		if (sc->depth <= 1 || sc->depth > 8)
691 			fb->fb_cmsize = 0;
692 		else
693 			fb->fb_cmsize = 1 << sc->depth;
694 		fb->fb_size = sc->fb_size;
695 		break;
696 	default:
697 		return (fb_commonioctl(adp, cmd, data));
698 	}
699 
700 	return (0);
701 }
702 
703 static int
704 bcmfb_clear(video_adapter_t *adp)
705 {
706 
707 	return (bcmfb_blank_display(adp, 0));
708 }
709 
710 static int
711 bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
712 {
713 
714 	return (0);
715 }
716 
717 static int
718 bcmfb_bitblt(video_adapter_t *adp, ...)
719 {
720 
721 	return (0);
722 }
723 
724 static int
725 bcmfb_diag(video_adapter_t *adp, int level)
726 {
727 
728 	return (0);
729 }
730 
731 static int
732 bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
733 {
734 
735 	return (0);
736 }
737 
738 static int
739 bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
740 {
741 
742 	return (0);
743 }
744 
745 static int
746 bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
747 {
748 
749 	return (0);
750 }
751 
752 static int
753 bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
754     int size, int bpp, int bit_ltor, int byte_ltor)
755 {
756 
757 	return (0);
758 }
759 
760 static int
761 bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
762 {
763 	int bytes, col, i, j, k, row;
764 	struct bcmsc_softc *sc;
765 	u_char *p;
766 	uint8_t *addr, fg, bg, color;
767 	uint16_t rgb;
768 
769 	sc = (struct bcmsc_softc *)adp;
770 
771 	if (sc->fb_addr == 0)
772 		return (0);
773 
774 	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
775 	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
776 	p = sc->font + c*BCMFB_FONT_HEIGHT;
777 	addr = (uint8_t *)sc->fb_addr
778 	    + (row + sc->ymargin)*(sc->stride)
779 	    + (sc->depth/8) * (col + sc->xmargin);
780 
781 	fg = a & 0xf ;
782 	bg = (a >> 4) & 0xf;
783 
784 	bytes = sc->depth / 8;
785 	for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
786 		for (j = 0, k = 7; j < 8; j++, k--) {
787 			if ((p[i] & (1 << k)) == 0)
788 				color = bg;
789 			else
790 				color = fg;
791 
792 			switch (sc->depth) {
793 			case 32:
794 			case 24:
795 				if (sc->fbswap) {
796 					addr[bytes * j + 0] =
797 					    bcmfb_palette[color].b;
798 					addr[bytes * j + 1] =
799 					    bcmfb_palette[color].g;
800 					addr[bytes * j + 2] =
801 					    bcmfb_palette[color].r;
802 				} else {
803 					addr[bytes * j + 0] =
804 					    bcmfb_palette[color].r;
805 					addr[bytes * j + 1] =
806 					    bcmfb_palette[color].g;
807 					addr[bytes * j + 2] =
808 					    bcmfb_palette[color].b;
809 				}
810 				if (sc->depth == 32)
811 					addr[bytes * j + 3] =
812 					    bcmfb_palette[color].a;
813 				break;
814 			case 16:
815 				rgb = (bcmfb_palette[color].r >> 3) << 11;
816 				rgb |= (bcmfb_palette[color].g >> 2) << 5;
817 				rgb |= (bcmfb_palette[color].b >> 3);
818 				addr[bytes * j] = rgb & 0xff;
819 				addr[bytes * j + 1] = (rgb >> 8) & 0xff;
820 			default:
821 				/* Not supported yet */
822 				break;
823 			}
824 		}
825 
826 		addr += (sc->stride);
827 	}
828 
829         return (0);
830 }
831 
832 static int
833 bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
834 {
835 	int i;
836 
837 	for (i = 0; i < len; i++)
838 		bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
839 
840 	return (0);
841 }
842 
843 static int
844 bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
845     uint32_t pixel_mask, int size, int width)
846 {
847 
848 	return (0);
849 }
850