bcm2835_fb.c revision 298383 
1/*-
2 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/arm/broadcom/bcm2835/bcm2835_fb.c 298383 2016-04-20 22:38:00Z gonzo $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33#include <sys/consio.h>
34#include <sys/fbio.h>
35#include <sys/kdb.h>
36#include <sys/kernel.h>
37#include <sys/malloc.h>
38#include <sys/module.h>
39
40#include <vm/vm.h>
41#include <vm/pmap.h>
42
43#include <dev/fb/fbreg.h>
44#include <dev/fdt/fdt_common.h>
45#include <dev/ofw/ofw_bus.h>
46#include <dev/ofw/ofw_bus_subr.h>
47#include <dev/syscons/syscons.h>
48
49#include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
50
51#include "mbox_if.h"
52
53struct argb {
54	uint8_t		a;
55	uint8_t		r;
56	uint8_t		g;
57	uint8_t		b;
58};
59
60static struct argb bcmfb_palette[16] = {
61	{0x00, 0x00, 0x00, 0x00},
62	{0x00, 0x00, 0x00, 0xaa},
63	{0x00, 0x00, 0xaa, 0x00},
64	{0x00, 0x00, 0xaa, 0xaa},
65	{0x00, 0xaa, 0x00, 0x00},
66	{0x00, 0xaa, 0x00, 0xaa},
67	{0x00, 0xaa, 0x55, 0x00},
68	{0x00, 0xaa, 0xaa, 0xaa},
69	{0x00, 0x55, 0x55, 0x55},
70	{0x00, 0x55, 0x55, 0xff},
71	{0x00, 0x55, 0xff, 0x55},
72	{0x00, 0x55, 0xff, 0xff},
73	{0x00, 0xff, 0x55, 0x55},
74	{0x00, 0xff, 0x55, 0xff},
75	{0x00, 0xff, 0xff, 0x55},
76	{0x00, 0xff, 0xff, 0xff}
77};
78
79/* mouse pointer from dev/syscons/scgfbrndr.c */
80static u_char mouse_pointer[16] = {
81        0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
82        0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
83};
84
85#define	BCMFB_FONT_HEIGHT	16
86#define	BCMFB_FONT_WIDTH	8
87#define	FB_WIDTH		640
88#define	FB_HEIGHT		480
89#define	FB_DEPTH		24
90
91struct bcmsc_softc {
92	/* Videoadpater part */
93	video_adapter_t	va;
94
95	intptr_t	fb_addr;
96	intptr_t	fb_paddr;
97	unsigned int	fb_size;
98
99	unsigned int	height;
100	unsigned int	width;
101	unsigned int	depth;
102	unsigned int	stride;
103
104	unsigned int	xmargin;
105	unsigned int	ymargin;
106
107	unsigned char	*font;
108	int		fbswap;
109	int		initialized;
110};
111
112static struct bcmsc_softc bcmsc;
113
114static int bcm_fb_probe(device_t);
115static int bcm_fb_attach(device_t);
116static void bcmfb_update_margins(video_adapter_t *adp);
117static int bcmfb_configure(int);
118
119static int
120bcm_fb_probe(device_t dev)
121{
122	int error;
123
124	if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-fb"))
125		return (ENXIO);
126	device_set_desc(dev, "BCM2835 framebuffer device");
127	error = sc_probe_unit(device_get_unit(dev),
128	    device_get_flags(dev) | SC_AUTODETECT_KBD);
129	if (error != 0)
130		return (error);
131
132	return (BUS_PROBE_DEFAULT);
133}
134
135static int
136bcm_fb_attach(device_t dev)
137{
138	struct bcm2835_fb_config fb;
139	struct bcmsc_softc *sc;
140
141	sc = (struct bcmsc_softc *)vid_get_adapter(vid_find_adapter(
142	    "bcmfb", 0));
143	if (sc != NULL)
144		device_set_softc(dev, sc);
145	else
146		sc = device_get_softc(dev);
147
148	memset(&fb, 0, sizeof(fb));
149	if (bcm2835_mbox_fb_get_w_h(&fb) != 0)
150		return (ENXIO);
151	fb.bpp = FB_DEPTH;
152	fb.vxres = fb.xres;
153	fb.vyres = fb.yres;
154	fb.xoffset = fb.yoffset = 0;
155	if (bcm2835_mbox_fb_init(&fb) != 0)
156		return (ENXIO);
157
158	sc->fb_addr = (intptr_t)pmap_mapdev(fb.base, fb.size);
159	sc->fb_paddr = fb.base;
160	sc->fb_size = fb.size;
161	sc->depth = fb.bpp;
162	sc->stride = fb.pitch;
163	sc->width = fb.xres;
164	sc->height = fb.yres;
165	bcmfb_update_margins(&sc->va);
166
167	if (sc_attach_unit(device_get_unit(dev),
168	    device_get_flags(dev) | SC_AUTODETECT_KBD) != 0) {
169		device_printf(dev, "failed to attach syscons\n");
170		return (ENXIO);
171	}
172
173	device_printf(dev, "%dx%d(%dx%d@%d,%d) %dbpp\n", fb.xres, fb.yres,
174	    fb.vxres, fb.vyres, fb.xoffset, fb.yoffset, fb.bpp);
175	device_printf(dev,
176	    "fbswap: %d, pitch %d, base 0x%08x, screen_size %d\n",
177	    sc->fbswap, fb.pitch, fb.base, fb.size);
178
179	return (0);
180}
181
182static device_method_t bcm_fb_methods[] = {
183	/* Device interface */
184	DEVMETHOD(device_probe,		bcm_fb_probe),
185	DEVMETHOD(device_attach,	bcm_fb_attach),
186
187	{ 0, 0 }
188};
189
190static devclass_t bcm_fb_devclass;
191
192static driver_t bcm_fb_driver = {
193	"fb",
194	bcm_fb_methods,
195	sizeof(struct bcmsc_softc),
196};
197
198DRIVER_MODULE(bcm2835fb, ofwbus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
199
200/*
201 * Video driver routines and glue.
202 */
203static vi_probe_t		bcmfb_probe;
204static vi_init_t		bcmfb_init;
205static vi_get_info_t		bcmfb_get_info;
206static vi_query_mode_t		bcmfb_query_mode;
207static vi_set_mode_t		bcmfb_set_mode;
208static vi_save_font_t		bcmfb_save_font;
209static vi_load_font_t		bcmfb_load_font;
210static vi_show_font_t		bcmfb_show_font;
211static vi_save_palette_t	bcmfb_save_palette;
212static vi_load_palette_t	bcmfb_load_palette;
213static vi_set_border_t		bcmfb_set_border;
214static vi_save_state_t		bcmfb_save_state;
215static vi_load_state_t		bcmfb_load_state;
216static vi_set_win_org_t		bcmfb_set_win_org;
217static vi_read_hw_cursor_t	bcmfb_read_hw_cursor;
218static vi_set_hw_cursor_t	bcmfb_set_hw_cursor;
219static vi_set_hw_cursor_shape_t	bcmfb_set_hw_cursor_shape;
220static vi_blank_display_t	bcmfb_blank_display;
221static vi_mmap_t		bcmfb_mmap;
222static vi_ioctl_t		bcmfb_ioctl;
223static vi_clear_t		bcmfb_clear;
224static vi_fill_rect_t		bcmfb_fill_rect;
225static vi_bitblt_t		bcmfb_bitblt;
226static vi_diag_t		bcmfb_diag;
227static vi_save_cursor_palette_t	bcmfb_save_cursor_palette;
228static vi_load_cursor_palette_t	bcmfb_load_cursor_palette;
229static vi_copy_t		bcmfb_copy;
230static vi_putp_t		bcmfb_putp;
231static vi_putc_t		bcmfb_putc;
232static vi_puts_t		bcmfb_puts;
233static vi_putm_t		bcmfb_putm;
234
235static video_switch_t bcmfbvidsw = {
236	.probe			= bcmfb_probe,
237	.init			= bcmfb_init,
238	.get_info		= bcmfb_get_info,
239	.query_mode		= bcmfb_query_mode,
240	.set_mode		= bcmfb_set_mode,
241	.save_font		= bcmfb_save_font,
242	.load_font		= bcmfb_load_font,
243	.show_font		= bcmfb_show_font,
244	.save_palette		= bcmfb_save_palette,
245	.load_palette		= bcmfb_load_palette,
246	.set_border		= bcmfb_set_border,
247	.save_state		= bcmfb_save_state,
248	.load_state		= bcmfb_load_state,
249	.set_win_org		= bcmfb_set_win_org,
250	.read_hw_cursor		= bcmfb_read_hw_cursor,
251	.set_hw_cursor		= bcmfb_set_hw_cursor,
252	.set_hw_cursor_shape	= bcmfb_set_hw_cursor_shape,
253	.blank_display		= bcmfb_blank_display,
254	.mmap			= bcmfb_mmap,
255	.ioctl			= bcmfb_ioctl,
256	.clear			= bcmfb_clear,
257	.fill_rect		= bcmfb_fill_rect,
258	.bitblt			= bcmfb_bitblt,
259	.diag			= bcmfb_diag,
260	.save_cursor_palette	= bcmfb_save_cursor_palette,
261	.load_cursor_palette	= bcmfb_load_cursor_palette,
262	.copy			= bcmfb_copy,
263	.putp			= bcmfb_putp,
264	.putc			= bcmfb_putc,
265	.puts			= bcmfb_puts,
266	.putm			= bcmfb_putm,
267};
268
269VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
270
271static vr_init_t bcmrend_init;
272static vr_clear_t bcmrend_clear;
273static vr_draw_border_t bcmrend_draw_border;
274static vr_draw_t bcmrend_draw;
275static vr_set_cursor_t bcmrend_set_cursor;
276static vr_draw_cursor_t bcmrend_draw_cursor;
277static vr_blink_cursor_t bcmrend_blink_cursor;
278static vr_set_mouse_t bcmrend_set_mouse;
279static vr_draw_mouse_t bcmrend_draw_mouse;
280
281/*
282 * We use our own renderer; this is because we must emulate a hardware
283 * cursor.
284 */
285static sc_rndr_sw_t bcmrend = {
286	bcmrend_init,
287	bcmrend_clear,
288	bcmrend_draw_border,
289	bcmrend_draw,
290	bcmrend_set_cursor,
291	bcmrend_draw_cursor,
292	bcmrend_blink_cursor,
293	bcmrend_set_mouse,
294	bcmrend_draw_mouse
295};
296
297RENDERER(bcmfb, 0, bcmrend, gfb_set);
298RENDERER_MODULE(bcmfb, gfb_set);
299
300static void
301bcmrend_init(scr_stat* scp)
302{
303}
304
305static void
306bcmrend_clear(scr_stat* scp, int c, int attr)
307{
308}
309
310static void
311bcmrend_draw_border(scr_stat* scp, int color)
312{
313}
314
315static void
316bcmrend_draw(scr_stat* scp, int from, int count, int flip)
317{
318	video_adapter_t* adp = scp->sc->adp;
319	int i, c, a;
320
321	if (!flip) {
322		/* Normal printing */
323		vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
324	} else {
325		/* This is for selections and such: invert the color attribute */
326		for (i = count; i-- > 0; ++from) {
327			c = sc_vtb_getc(&scp->vtb, from);
328			a = sc_vtb_geta(&scp->vtb, from) >> 8;
329			vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
330		}
331	}
332}
333
334static void
335bcmrend_set_cursor(scr_stat* scp, int base, int height, int blink)
336{
337}
338
339static void
340bcmrend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
341{
342	int bytes, col, i, j, row;
343	struct bcmsc_softc *sc;
344	uint8_t *addr;
345	video_adapter_t *adp;
346
347	adp = scp->sc->adp;
348	sc = (struct bcmsc_softc *)adp;
349
350	if (scp->curs_attr.height <= 0)
351		return;
352
353	if (sc->fb_addr == 0)
354		return;
355
356	if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
357		return;
358
359	/* calculate the coordinates in the video buffer */
360	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
361	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
362
363	addr = (uint8_t *)sc->fb_addr
364	    + (row + sc->ymargin)*(sc->stride)
365	    + (sc->depth/8) * (col + sc->xmargin);
366
367	bytes = sc->depth / 8;
368	/* our cursor consists of simply inverting the char under it */
369	for (i = 0; i < adp->va_info.vi_cheight; i++) {
370		for (j = 0; j < adp->va_info.vi_cwidth; j++) {
371			switch (sc->depth) {
372			case 32:
373			case 24:
374				addr[bytes*j + 2] ^= 0xff;
375				/* FALLTHROUGH */
376			case 16:
377				addr[bytes*j + 1] ^= 0xff;
378				addr[bytes*j] ^= 0xff;
379				break;
380			default:
381				break;
382			}
383		}
384
385		addr += sc->stride;
386	}
387}
388
389static void
390bcmrend_blink_cursor(scr_stat* scp, int at, int flip)
391{
392}
393
394static void
395bcmrend_set_mouse(scr_stat* scp)
396{
397}
398
399static void
400bcmrend_draw_mouse(scr_stat* scp, int x, int y, int on)
401{
402	vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
403}
404
405static uint16_t bcmfb_static_window[ROW*COL];
406extern u_char dflt_font_16[];
407
408/*
409 * Update videoadapter settings after changing resolution
410 */
411static void
412bcmfb_update_margins(video_adapter_t *adp)
413{
414	struct bcmsc_softc *sc;
415	video_info_t *vi;
416
417	sc = (struct bcmsc_softc *)adp;
418	vi = &adp->va_info;
419
420	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
421	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
422}
423
424static int
425bcmfb_configure(int flags)
426{
427	char bootargs[2048], *n, *p, *v;
428	pcell_t cell;
429	phandle_t chosen, display, root;
430	struct bcmsc_softc *sc;
431
432	sc = &bcmsc;
433	if (sc->initialized)
434		return (0);
435
436	sc->width = 0;
437	sc->height = 0;
438
439	/*
440	 * It seems there is no way to let syscons framework know
441	 * that framebuffer resolution has changed. So just try
442	 * to fetch data from FDT bootargs, FDT display data and
443	 * finally go with defaults if everything else has failed.
444	 */
445	chosen = OF_finddevice("/chosen");
446	if (chosen != 0 &&
447	    OF_getprop(chosen, "bootargs", &bootargs, sizeof(bootargs)) > 0) {
448		p = bootargs;
449		while ((v = strsep(&p, " ")) != NULL) {
450			if (*v == '\0')
451				continue;
452			n = strsep(&v, "=");
453			if (strcmp(n, "bcm2708_fb.fbwidth") == 0 && v != NULL)
454				sc->width = (unsigned int)strtol(v, NULL, 0);
455			else if (strcmp(n, "bcm2708_fb.fbheight") == 0 &&
456			    v != NULL)
457				sc->height = (unsigned int)strtol(v, NULL, 0);
458			else if (strcmp(n, "bcm2708_fb.fbswap") == 0 &&
459			    v != NULL)
460				if (*v == '1')
461					sc->fbswap = 1;
462		}
463	}
464
465	root = OF_finddevice("/");
466	if ((root != 0) &&
467	    (display = fdt_find_compatible(root, "broadcom,bcm2835-fb", 1))) {
468		if (sc->width == 0) {
469			if ((OF_getprop(display, "broadcom,width",
470			    &cell, sizeof(cell))) > 0)
471				sc->width = (int)fdt32_to_cpu(cell);
472		}
473
474		if (sc->height == 0) {
475			if ((OF_getprop(display, "broadcom,height",
476			    &cell, sizeof(cell))) > 0)
477				sc->height = (int)fdt32_to_cpu(cell);
478		}
479	}
480
481	if (sc->width == 0)
482		sc->width = FB_WIDTH;
483	if (sc->height == 0)
484		sc->height = FB_HEIGHT;
485
486	bcmfb_init(0, &sc->va, 0);
487	sc->initialized = 1;
488
489	return (0);
490}
491
492static int
493bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
494{
495
496	return (0);
497}
498
499static int
500bcmfb_init(int unit, video_adapter_t *adp, int flags)
501{
502	struct bcmsc_softc *sc;
503	video_info_t *vi;
504
505	sc = (struct bcmsc_softc *)adp;
506	vi = &adp->va_info;
507
508	vid_init_struct(adp, "bcmfb", -1, unit);
509
510	sc->font = dflt_font_16;
511	vi->vi_cheight = BCMFB_FONT_HEIGHT;
512	vi->vi_cwidth = BCMFB_FONT_WIDTH;
513	vi->vi_width = sc->width / vi->vi_cwidth;
514	vi->vi_height = sc->height / vi->vi_cheight;
515
516	/*
517	 * Clamp width/height to syscons maximums
518	 */
519	if (vi->vi_width > COL)
520		vi->vi_width = COL;
521	if (vi->vi_height > ROW)
522		vi->vi_height = ROW;
523
524	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
525	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
526
527	adp->va_window = (vm_offset_t) bcmfb_static_window;
528	adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
529
530	vid_register(&sc->va);
531
532	return (0);
533}
534
535static int
536bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
537{
538	bcopy(&adp->va_info, info, sizeof(*info));
539	return (0);
540}
541
542static int
543bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
544{
545	return (0);
546}
547
548static int
549bcmfb_set_mode(video_adapter_t *adp, int mode)
550{
551	return (0);
552}
553
554static int
555bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
556    u_char *data, int c, int count)
557{
558	return (0);
559}
560
561static int
562bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
563    u_char *data, int c, int count)
564{
565	struct bcmsc_softc *sc;
566
567	sc = (struct bcmsc_softc *)adp;
568	sc->font = data;
569
570	return (0);
571}
572
573static int
574bcmfb_show_font(video_adapter_t *adp, int page)
575{
576	return (0);
577}
578
579static int
580bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
581{
582	return (0);
583}
584
585static int
586bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
587{
588	return (0);
589}
590
591static int
592bcmfb_set_border(video_adapter_t *adp, int border)
593{
594	return (bcmfb_blank_display(adp, border));
595}
596
597static int
598bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
599{
600	return (0);
601}
602
603static int
604bcmfb_load_state(video_adapter_t *adp, void *p)
605{
606	return (0);
607}
608
609static int
610bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
611{
612	return (0);
613}
614
615static int
616bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
617{
618	*col = *row = 0;
619
620	return (0);
621}
622
623static int
624bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
625{
626	return (0);
627}
628
629static int
630bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
631    int celsize, int blink)
632{
633	return (0);
634}
635
636static int
637bcmfb_blank_display(video_adapter_t *adp, int mode)
638{
639
640	struct bcmsc_softc *sc;
641
642	sc = (struct bcmsc_softc *)adp;
643	if (sc && sc->fb_addr)
644		memset((void*)sc->fb_addr, 0, sc->fb_size);
645
646	return (0);
647}
648
649static int
650bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
651    int prot, vm_memattr_t *memattr)
652{
653	struct bcmsc_softc *sc;
654
655	sc = (struct bcmsc_softc *)adp;
656
657	/*
658	 * This might be a legacy VGA mem request: if so, just point it at the
659	 * framebuffer, since it shouldn't be touched
660	 */
661	if (offset < sc->stride*sc->height) {
662		*paddr = sc->fb_paddr + offset;
663		return (0);
664	}
665
666	return (EINVAL);
667}
668
669static int
670bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
671{
672	struct bcmsc_softc *sc;
673	struct fbtype *fb;
674
675	sc = (struct bcmsc_softc *)adp;
676
677	switch (cmd) {
678	case FBIOGTYPE:
679		fb = (struct fbtype *)data;
680		fb->fb_type = FBTYPE_PCIMISC;
681		fb->fb_height = sc->height;
682		fb->fb_width = sc->width;
683		fb->fb_depth = sc->depth;
684		if (sc->depth <= 1 || sc->depth > 8)
685			fb->fb_cmsize = 0;
686		else
687			fb->fb_cmsize = 1 << sc->depth;
688		fb->fb_size = sc->fb_size;
689		break;
690	default:
691		return (fb_commonioctl(adp, cmd, data));
692	}
693
694	return (0);
695}
696
697static int
698bcmfb_clear(video_adapter_t *adp)
699{
700
701	return (bcmfb_blank_display(adp, 0));
702}
703
704static int
705bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
706{
707
708	return (0);
709}
710
711static int
712bcmfb_bitblt(video_adapter_t *adp, ...)
713{
714
715	return (0);
716}
717
718static int
719bcmfb_diag(video_adapter_t *adp, int level)
720{
721
722	return (0);
723}
724
725static int
726bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
727{
728
729	return (0);
730}
731
732static int
733bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
734{
735
736	return (0);
737}
738
739static int
740bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
741{
742
743	return (0);
744}
745
746static int
747bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
748    int size, int bpp, int bit_ltor, int byte_ltor)
749{
750
751	return (0);
752}
753
754static int
755bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
756{
757	int bytes, col, i, j, k, row;
758	struct bcmsc_softc *sc;
759	u_char *p;
760	uint8_t *addr, fg, bg, color;
761	uint16_t rgb;
762
763	sc = (struct bcmsc_softc *)adp;
764
765	if (sc->fb_addr == 0)
766		return (0);
767
768	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
769	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
770	p = sc->font + c*BCMFB_FONT_HEIGHT;
771	addr = (uint8_t *)sc->fb_addr
772	    + (row + sc->ymargin)*(sc->stride)
773	    + (sc->depth/8) * (col + sc->xmargin);
774
775	fg = a & 0xf ;
776	bg = (a >> 4) & 0xf;
777
778	bytes = sc->depth / 8;
779	for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
780		for (j = 0, k = 7; j < 8; j++, k--) {
781			if ((p[i] & (1 << k)) == 0)
782				color = bg;
783			else
784				color = fg;
785
786			switch (sc->depth) {
787			case 32:
788			case 24:
789				if (sc->fbswap) {
790					addr[bytes * j + 0] =
791					    bcmfb_palette[color].b;
792					addr[bytes * j + 1] =
793					    bcmfb_palette[color].g;
794					addr[bytes * j + 2] =
795					    bcmfb_palette[color].r;
796				} else {
797					addr[bytes * j + 0] =
798					    bcmfb_palette[color].r;
799					addr[bytes * j + 1] =
800					    bcmfb_palette[color].g;
801					addr[bytes * j + 2] =
802					    bcmfb_palette[color].b;
803				}
804				if (sc->depth == 32)
805					addr[bytes * j + 3] =
806					    bcmfb_palette[color].a;
807				break;
808			case 16:
809				rgb = (bcmfb_palette[color].r >> 3) << 11;
810				rgb |= (bcmfb_palette[color].g >> 2) << 5;
811				rgb |= (bcmfb_palette[color].b >> 3);
812				addr[bytes * j] = rgb & 0xff;
813				addr[bytes * j + 1] = (rgb >> 8) & 0xff;
814			default:
815				/* Not supported yet */
816				break;
817			}
818		}
819
820		addr += (sc->stride);
821	}
822
823        return (0);
824}
825
826static int
827bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
828{
829	int i;
830
831	for (i = 0; i < len; i++)
832		bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
833
834	return (0);
835}
836
837static int
838bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
839    uint32_t pixel_mask, int size, int width)
840{
841
842	return (0);
843}
844
845/*
846 * Define a stub keyboard driver in case one hasn't been
847 * compiled into the kernel
848 */
849#include <sys/kbio.h>
850#include <dev/kbd/kbdreg.h>
851
852static int dummy_kbd_configure(int flags);
853
854keyboard_switch_t bcmdummysw;
855
856static int
857dummy_kbd_configure(int flags)
858{
859
860	return (0);
861}
862KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);
863